WO2023169070A1

WO2023169070A1 - Apparatus for paperboard-film lamination

Info

Publication number: WO2023169070A1
Application number: PCT/CN2023/070130
Authority: WO
Inventors: Zhiji DENG; Ming Liu; Qiujia FU; Meile WANG; Yikun LIANG; Yongshui SHEN
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2022-03-08
Filing date: 2023-01-03
Publication date: 2023-09-14
Anticipated expiration: 2024-09-08

Abstract

The present disclosure provides an apparatus for paperboard-film lamination, comprising: a roller used to convey a film in a rolling motion; and an ejector device used to eject the film on the roller along a direction away from an outer wall surface of the roller.

Description

APPARATUS FOR PAPERBOARD-FILM LAMINATION

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority of Chinese Patent Application No. 202210218890.8 filed on March 8, 2022, Chinese Patent Application No. 202210270503.5 filed on March 18, 2022, Chinese Patent Application No. 202210250506.2 filed on March 15, 2022 and Chinese Patent Application No. 202220595279.2 filed on March 18, 2022, the entire contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to the field of packaging technology, and in particular, to an apparatus for paperboard-film lamination.

BACKGROUND

The paperboard-film lamination apparatus is widely used in packaging products. Since different products may have different heights, a ratio of a length of the film to a length of the paperboard (can be referred to as “ratio of film length to paperboard length” ) should meet various requirements (e.g., equal to 1, larger than 1) . In existing solutions, in order to meet various ratios of film length to paperboard length, the paperboard-film lamination apparatus has to stop and switch different working parameters. Therefore, it is desirable to provide an apparatus for paperboard-film lamination to meet various requirements.

SUMMARY

An aspect of the present disclosure relates to An apparatus for paperboard-film lamination, comprising: a roller used to convey a film in a rolling motion; and an ejector device used to eject the film on the roller along a direction away from an outer wall surface of the roller.

In some embodiments, wherein the apparatus further includes a driving device connected to the ejector device, the driving device used to drive at least a part of the ejector device to protrude from, be parallel to, or depress from the outer wall surface of the roller.

In some embodiments, wherein when the driving device drives at least a part of the ejector device to protrude from the outer wall surface of the roller, a ratio of a length of the film to a length of the paperboard is greater than 1; and when the driving device drives at least a part of the ejector device to be parallel to the outer wall surface of the roller or to depress from the outer wall surface of the roller, the ratio of the length of the film to the length of the paperboard is equal to 1.

In some embodiments, wherein the outer wall surface of the roller is provided with an opening, wherein the opening is connected to an interior of the roller and extends along an axis direction of the roller; and the ejector device is mounted at the opening and is capable of protruding from, parallel to, or depressing from the outer wall surface of the roller through the opening under a driving of the driving device.

In some embodiments, wherein at least a part of the ejector device is capable of moving along a radial direction of the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller through the opening.

In some embodiments, wherein the ejector device includes: a cover body mounted at the opening; and a first connection assembly, a first end of the first connection assembly being connected to the driving device and a second end of the first connection assembly being connected to the cover body, wherein the driving device drives at least a part of the cover body through the first connection assembly to move along the radial direction of the roller to protrude from, be parallel to, or depress from the outer wall surface of the roller.

In some embodiments, wherein the driving device includes a driving unit and a transmission unit; and the transmission unit is provided with a slot, wherein the first end of the first connection assembly is limited within the slot and moves within the slot under a driving of the driving unit so that the second end of the first connection assembly drives at least a part of the cover body to protrude from, be parallel to, or depress from the outer wall surface of the roller.

In some embodiments, wherein at least a part of the ejector device is capable of rotating relative to the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller through the opening.

In some embodiments, wherein the ejector device includes: a cover body mounted at the opening, wherein at least a part of the cover body is capable of rotating relative to the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller.

In some embodiments, wherein the driving device includes a driving unit and a transmission unit; and the transmission unit includes a second connection assembly, wherein a first end of the second connection assembly moves under the driving of the driving unit so that a second end of the second connection assembly drives at least a part of the cover body to protrude from, be parallel to, or depress from the outer wall surface of the roller.

In some embodiments, wherein the second end of the second connection assembly is connected to the cover body by a connection rod and a connection shaft, the connection rod being a telescopic rod.

In some embodiments, wherein the apparatus further includes an adsorption member, the adsorption member adsorbing the film on the outer wall surface of the ejector device and an outer wall surface of the roller through a first hole on the ejector device and a second hole on the roller.

In some embodiments, wherein the apparatus further includes a cover slice, the cover slice being located within the roller and used to change an opening/closing state of the first hole and/or the second hole.

In some embodiments, wherein the driving unit includes a driving unit and a transmission unit; and the transmission unit is provided with a slot, wherein a first end of the cover slice is limited within the slot and moves within the slot under a driving of the driving unit so that a second end of the cover slice moves along the radial direction of the roller.

In some embodiments, wherein the transmission unit includes a first moving assembly connected to the cover slice, the first moving assembly driving the cover slice to move along a central axis direction of the roller under the driving of the driving unit.

In some embodiments, wherein the first moving assembly includes a telescopic assembly with a telescopic direction parallel to the central axis direction of the roller.

In some embodiments, wherein the transmission unit includes a second moving assembly connected to the cover slice, the second moving assembly driving the cover slice to move along a circumferential direction of the roller under the driving of the driving unit.

In some embodiments, wherein the second moving assembly includes a collar provided within the roller, the collar being capable of rotating along the central axis direction of the roller, wherein the cover slice is connected to an outer wall of the collar.

In some embodiments, wherein the apparatus further includes: an adsorption member, the adsorption member adsorbing the film on the outer wall surface of the ejector device and an outer wall surface of the roller through a first hole on the ejector device and a second hole on the roller; and a release member, the release member disconnecting the film from the outer wall surface of the ejector device and the outer wall surface of the roller through the first hole and the second hole.

In some embodiments, wherein the apparatus further includes an adjusting device connected to the ejector device, the adjusting device being used to adjust a height of the ejector device protruding from the outer wall surface of the roller.

In some embodiments, wherein the adjusting device includes a first guiding structure and a power source, wherein the first guiding structure is connected to the driving device and extends along a radial direction of the roller, the ejector device is movably connected to the first guiding structure, the driving device drives the first guiding structure to move along an extension direction of the first guiding structure; the power source is connected to the ejector device and drives the ejector device along the extension direction of the first guiding structure.

In some embodiments, wherein the adjusting device includes a second guiding structure and a locking member, wherein the second guiding structure is connected to the driving device and extends along the radial direction of the roller; the second guiding structure includes a plurality of adjusting positions arranged at intervals along the extension direction of the second guiding structure; the ejector device selectively fits into at least one of the adjusting positions; and the locking member is used to lock the fitted adjusted ejector device 20 to the second guiding structure.

Additional features will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the accompanying drawings or may be learned by production or operation of the examples. The features of the present disclosure may be realized and attained by practice or use of various aspects of the methodologies, instrumentalities, and combinations set forth in the detailed examples discussed below.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure is further described in terms of exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. These embodiments are non-limiting exemplary embodiments, in which like reference numerals represent similar structures throughout the several views of the drawings, and wherein:

FIG. 1 is a schematic diagram illustrating an exemplary structure of an exemplary paperboard-film lamination apparatus according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram illustrating an extended film laminated to a paperboard according to some embodiments of the present disclosure;

FIG. 3 is schematic diagram illustrating an exemplary paperboard-film lamination process according to some embodiments of the present disclosure;

FIG. 4 is schematic diagram illustrating a production process of a paperboard-film lamination apparatus according to some embodiments of the present disclosure;

FIG. 5 is a schematic diagram illustrating an exemplary paperboard-film lamination product according to some embodiments of the present disclosure;

FIG. 6 is a schematic diagram illustrating an exemplary structure of an exemplary ejector device according to some embodiments of the present disclosure;

FIG. 7 is a schematic diagram illustrating an assembly structure of a roller, an ejector device, and a driving device according to some embodiments of the present disclosure;

FIG. 8 is a partial enlarged schematic diagram of “A” in FIG. 7;

FIG. 9 is a schematic diagram illustrating an ejector device in FIG. 7 in an ejected state;

FIG. 10 is a schematic diagram illustrating an exemplary structure of an adsorption member in FIG. 9;

FIG. 11 is a schematic diagram illustrating an exemplary cooperation manner between an adsorption member and a cover slice in FIG. 9;

FIG. 12 is a schematic diagram illustrating an exemplary cooperation manner between a cover slice and a first driving unit in FIG. 9;

FIG. 13 is a schematic diagram illustrating another assembly structure of a roller, an ejector device, and a driving device according to some embodiments of the present disclosure;

FIG. 14 is a partial enlarged schematic diagram of FIG. 13;

FIG. 15 is a schematic diagram illustrating an ejector device in FIG. 13 in an ejected state;

FIG. 16 is a schematic diagram illustrating an exemplary structure with a barrel body omitted in FIG. 13;

FIG. 17 is a schematic diagram illustrating another assembly structure of a roller, an ejector device, and a driving device according to some embodiments of the present disclosure;

FIG. 18 is a schematic diagram illustrating an ejector device in FIG. 17 in an ejected state;

FIG. 19 is a partial enlarged schematic diagram of FIG. 18;

FIG. 20 is a schematic diagram illustrating an exemplary structure with a barrel body omitted in FIG. 17;

FIG. 21 is a schematic diagram another assembly structure of a roller, an ejector device, and a driving device according to some embodiments of the present disclosure;

FIG. 22 is a schematic diagram illustrating an ejector device in FIG. 21 in an ejected state;

FIG. 23 is a partial enlarged schematic diagram of FIG. 22;

FIG. 24 is a schematic diagram illustrating an exemplary structure of a roller when an ejector device is in an ejected state according to some embodiments of the present disclosure;

FIG. 25 is a schematic diagram illustrating an exemplary film stack extension in the apparatus according to some embodiments of the present disclosure;

FIG. 26 is a schematic diagram illustrating an exemplary ejector device ejecting a film according to some embodiments of the present disclosure; and

FIG. 27 is a schematic diagram illustrating an exemplary film stack according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

In order to more clearly illustrate the technical solutions related to the embodiments of the present disclosure, a brief introduction of the drawings referred to the description of the embodiments is provided below. Obviously, the drawings described below are only some examples or embodiments of the present disclosure. Those having ordinary skills in the art, without further creative efforts, may apply the present disclosure to other similar scenarios according to these drawings. Unless obviously obtained from the context or the context illustrates otherwise, the same numeral in the drawings refers to the same structure or operation.

It should be understood that the “system, ” “device, ” “unit, ” and/or “module” used herein are one method to distinguish different components, elements, parts, sections, or assemblies of different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

As used in the disclosure and the appended claims, the singular forms “a, ” “an, ” and “the” include plural referents unless the content clearly dictates otherwise; the plural forms may be intended to include singular forms as well. In general, the terms “comprise, ” "comprises, ” and/or “comprising, ” “include, ” “includes, ” and/or “including, ” merely prompt to include steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive listing. The methods or devices may also include other steps or elements.

It will be understood that when a unit, engine, module or block is referred to as being “on, ” “connected to, ” or “coupled to, ” another unit, engine, module, or block, it may be directly on, connected or coupled to, or communicate with the other unit, engine, module, or block, or an intervening unit, engine, module, or block may be present, unless the context clearly indicates otherwise. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.

The paperboard-film lamination apparatus is widely used in packaging products. Since different products may have different heights, a ratio of a length of the film to a length of the paperboard (can be referred to as “ratio of film length to paperboard length” ) should meet various requirements (e.g., equal to 1, larger than 1) .

In existing solutions, in order to meet the ratio of film length to paperboard length larger than 1, two conveyors with different speeds are used to stack the film, which can’t be achieved by a general roller apparatus. Therefore, a completely new product line has to be built, which is very costly. In addition, for the existing solutions, a largest achievable ratio of film length to paperboard length is 1.5. In some other solutions, two rollers with a bulge and a groove respectively are cooperated to achieve the ratio of film length to paperboard length larger than 1. However, when a ratio of film length to paperboard length equal to 1 is required, the apparatus has to stop to switch to traditional rollers, which also causes a huge production equipment cost and reduces the production efficiency. In addition, for this solution, a largest achievable ratio of film length to paperboard length is 1.375.

Therefore, it is desirable to provide an improved apparatus for paperboard-film lamination based on the general roll apparatus, solving the problems of mode switching between unequal-length lamination mode (i.e., a ratio of film length to paperboard length larger than 1) and equal-length lamination mode (i.e., a ratio of film length to paperboard length equal to 1) and realizing free and flexible ratio of film length to paperboard length.

In some embodiments, as illustrated in FIG. 1, the paperboard-film lamination apparatus 100 may include a conveying member 70, a slitting member 80, and a transfer member 90. The conveying member 70 is used to transport a film 101 to a roller 10. The slitting member 80 is used to slit the film 101. The slitting member 80 may be located after or before the roller 10 along a transfer direction of the film 101. The transfer member 90 may be used to transfer a paperboard 102. The paperboard 102 may be placed on the transfer member 90 and conveyed by the transfer member 90 towards the roller 10. The roller 10 may be located relative to the top of the transfer member 90.

In some embodiments, during a process of laminating the film 101 with the paperboard 102 by the paperboard-film lamination apparatus 100, an ejector device 20 may be in an initial position (i.e., a cover body 22 is located within an opening 11) when there is no need to extend the film 101. The conveying member 70 may convey the film 101 to the roller 10. When the film 101 is conveyed to the roller 10, the film 101 is adsorbed on an outer wall surface of the roller 10 by an action of an adsorption member (e.g., an adsorption member 50 in FIG. 8) . The slitting member 80 may cut the film 101 at a specific position, then the cut film 101 continues to move with the roller 10. When the roller 10 moves with the film 101 to the transfer member 90, the film 101 is laminated with the glue-coated paperboard 102.

In some embodiments, as described in connection with FIGs. 1-5, the production process of the paperboard-film lamination may include: slitting the film 101, extending the film 101, slitting the paperboard 102, transferring the paperboard 102, gluing the paperboard 102, and the paperboard-film lamination, resulting in a formed product shown in FIG. 5.

The slitting the film 101 refers to that the film 101 is transferred to the roller 10 by the conveying member 70, the film 101 is absorbed and driven through the roller 10, then the film 101 is cut by the slitting member 80 when appropriate. For example, as shown in FIG. 1, the conveying member 70 includes a first drum 71, a second drum 72, and a third drum 73. The rolled film 101 is placed on the first drum 71 and the film 101 passes between the second drum 72 and the third drum 73. The second drum 72 and the third drum 73 are driven clockwise by an electric motor (not shown) , driving the film 101 to be transported smoothly to the roller 10.

In some embodiments, the slitting member 80 may include a slitting knife 81 and a corresponding driving assembly (not shown) that is used to drive the movement of the slitting knife 81. The slitting knife 81 is provided above the roller 10 and may move up and down or move circularly, which is not limited here. The film 101 needs to be slit twice by the slitting knife 81. After the film 101 is cut firstly, the roller 10 transports the film 101 and then the film 101 is cut secondly when an appropriate size is met. When the film 101 is transferred to the roller 10, the slitting knife 81 cuts the film 101 at the specific position, and the roller 10 drives the film 101 to rotate downward. When the paperboard 102 is transferred to the bottom of the roller 10, since the glue has strong adhesive properties, the film 101 may be peeled off the roller 10 and bonded to the paperboard 102.

The slitting the paperboard 102 refers to the slitting a paper or the paperboard 102 into sheets with a desired size.

The transferring the paperboard 102 refers to transferring the paperboard 102 by the transfer member 90 to the bottom of the glue-coated roller 200 for gluing. As illustrated in FIG. 4, a direction shown by an arrow refers to a transferring direction of the transfer member 90. In some embodiments, the transfer member 90 includes a support body 91 and a conveyor 92. The support body 91 may be used as a base support component, and its structure may be set according to actual needs. The slitting member 80 may be mounted on the support body 91 and move relatively up and down relative to the support body 91, thereby slitting the film 101 on the roller 10. The conveyor 92 is provided on the support body 91 in a rolling motion, and the glue-coated paperboard 102 is provided on the conveyor 92 at intervals and is conveyed to the roller 10 by the conveyor 92.

The gluing the paperboard 102 refers to transferring the glue strips 210 on the glue-coated roller 10 (with coated glue strips 210 matching a size (including width and length) of the paperboard 102) to the paperboard 102, as shown in FIG. 4. During the rotation of the glue-coated roller 10, the glue strips 210 are glued through glue groove 220, which can achieve partial coating of the glue strips 210, and then realize partial lamination of the film 101 with the paperboard 102.

The paperboard-film lamination refers to that the paperboard 102 coated with glue is transferred to the left (e.g., an arrow X shown in FIG. 4) , when the paperboard 102 is transferred below the roller 10, the film 101 is peeled off the roller 10 and bonded to the paperboard 102 due to the strong adhesive nature of the glue. The parts of the film 101 and the paperboard 102 that have glue can be combined and the parts that do not have glue can be separated. Finally, the paperboard is laminated with the film after passing through the roller 10.

Some embodiments of this present disclosure provide an apparatus for paperboard-film lamination. The apparatus may include a roller and an ejector device. The roller may be used to convey the film in a rolling motion, and the ejector device may be used to eject the film from the roller. The ejected film may be laminated with the paperboard, resulting in a paperboard-film package capable of packaging a product. In some embodiments, the product may include a three-dimensional monitor, food, mechanical parts, etc. In some embodiments, at least a part of the ejector device may protrude from the outer wall surface of the roller and eject the film. Accordingly, the film is stretched so that a ratio of a length of the film to a length of the paperboard is greater than 1. In some embodiments, the ejector device may be parallel to the outer wall surface of the roller or depress from the outer wall surface of the roller, so that the ratio of the length of the film to the length of the paperboard is equal to 1.

In some embodiments, when an unequal-length lamination of the film and the paperboard is performed, the ejector device may be controlled to protrude from the outer wall surface of the roller so that the ratio of the length of the film to the length of the paperboard is greater than 1. In some embodiments, when an equal-length lamination of the film and the paperboard is performed, the ejector device may be controlled to depress from or be parallel to the outer wall surface of the roller so that the ratio of the length of film to the length of the paperboard is equal to 1. In some embodiments, with the cooperation of the roller and the ejector device and other components (e.g., the drive device) of the apparatus, the equal-length lamination mode and the unequal-length lamination mode can be switched freely without stopping the apparatus, thereby increasing productivity efficiency.

As illustrated in FIG. 1, in some embodiments, the paperboard-film lamination apparatus 100 may include a roller 10 and an ejector device 20. The roller 10 may be used to convey the film 101 in a rolling motion, and the ejector device 20 may be used to eject the film 101 from the roller 10. In this embodiment, when the roller 10 conveys the film 101 to a position (e.g., above the ejector device 20 where the film 101 covers the ejector device 20) corresponding to the ejector device 20, at least a part of the ejector device 20 may move to protrude from the outer wall surface of the roller 10, thereby ejecting the film 101. The film 101 extends and stretches as it is ejected, thus changing the length of the film 101.

In some embodiments, the paperboard-film lamination apparatus 100 may also include a driving device 30 connected to the ejector device 20. The driving device 30 may be used to drive at least a part of the ejector device 20 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10.

In some embodiments, the ejector device 20 may be mounted at a position other than the roller 10, and the ejector device 20 may eject the film 101 from the outer wall surface of the roller 10 by an action of the driving device 30. In some embodiments, as shown in FIG. 6, the ejector device 20 may be mounted between a third drum 73 and the roller 10, the ejector device 20 includes a top rod 111 mounted between the third drum 73 and the roller 10 and extending along an axis direction of the roller 10. The top rod 111 may be provided with holes (not shown) connected with a suction device. When the film 101 needs to be ejected, the top rod 111 may be controlled to be close to the film 101, and then the suction device is activated to pull the film 101 away from the outer wall surface of the roller 10 by creating an adsorption airflow at the holes.

In some embodiments, as described in connection with FIGs. 7-9, at least a part of the ejector device 20 is capable of moving relative to the outer wall surface of the roller 10. For example, FIG. 7 is a schematic diagram illustrating the ejector device 20 parallel to the outer wall surface of the roller 10. FIG. 9 is a schematic diagram illustrating the ejector device 20 protruding from the outer wall surface of the roller 10.

In some embodiments, the ejector device 20 may be mounted on the roller 10. The driving device 30 is connected to the ejector device 20 for driving at least a part of the ejector device 20 to move to protrude from, be parallel to, or depress from the outer wall surface of the roller 10. The state in which at least a part of the ejector device 20 protrudes from the outer wall surface of the roller 10 may be referred to as an ejected state; the state in which at least a part of the ejector device 20 is parallel to or depress from the outer wall surface of the roller 10 may be referred to as a retracted state.

It should be noted that the main function of the ejector device 20 is to eject the film 101 by ejecting it at a certain height from the outer wall surface of the roller 10, therefore, any structure that can achieve the above function can be called the ejector device 20 referred to in this embodiment. More descriptions regarding the driving device 30 may be found elsewhere in the present disclosure.

In some embodiments, an initial length of the film 101 is the same or approximately the same as a length of the paperboard 102. During a process of transferring the film, the film 101 is adhered to the outer wall surface of the roller 10, accordingly, the length of the film 101 is a length of the film 101 along a circumferential direction of the roller 10. The circumferential direction of the roller 10 may refer to a direction around a central axis direction of the roller 10. For example, when the roller 10 is cylindrical, the circumferential direction may be the circumferential direction of the roller 10.

In some embodiments, when the driving device 30 drives at least a part of the ejector device 20 to protrude from the outer wall surface of the roller 10, the ratio of the length of the film 101 to the length of the paperboard 102 is greater than 1. When the driving device 30 drives at least a part of the ejector device 20 to be parallel to or depress from the outer wall surface of the roller 10, the ratio of the length of the film 101 to the length of the paperboard 102 is equal to 1.

Under a driving of the driving device 30, at least a part of the ejector device 20 may protrude from the outer wall surface of the roller 10, a part of the film 101 is ejected by the ejector device 20, so that the film 101 is extended, making the ratio of the length of the film 101 to the length of the paperboard 102 greater than 1, thereby realizing the unequal-length lamination of the film 101 and the paperboard 102. FIG. 9 is a schematic diagram illustrating an exemplary structure of the ejector device 20 and the roller 10 when the ejector device 20 is in the ejected state. As shown in FIG. 9, a part of the film 101 that is in contact with the ejector device 20 is ejected by the ejector device 20, so the length of the film 101 becomes longer. In some embodiments, the ejector device 20 may be parallel to the outer wall surface of the roller 10 or depress from the outer wall surface of the roller 10 under the driving of the driving device 30. Accordingly, the ejector device 20 does not eject the film 101, the film 101 is not stretched, so the ratio of the length of the film 101 to the length of the paperboard 102 is equal to 1, thereby realizing the equal-length lamination of the film 101 and the paperboard 102.

In some embodiments, through the cooperation among the roller 10, the ejector device 20, and the driving device 30, a height of the film 101 ejected by the ejector device 20 can be adjusted. Accordingly, the equal-length lamination mode and the unequal-length lamination mode can be switched freely without stopping the production line, thereby increasing the production efficiency significantly.

In some embodiments, as described in connection with FIGs. 7-9, an opening 11 may be provided in the outer wall surface of the roller 10. The opening 11 is connected to an interior of the roller 10 and extends along the central axis direction of the roller 10. The ejector device 20 is mounted at the opening 11 and is driven by the driving device 30 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10 through the opening 11. FIG. 7 is a schematic diagram illustrating the ejector device 20 located at the opening 11. As shown in FIG. 7, at least a part of the ejector device 20 is parallel to the outer side wall of the roller 10. In some embodiments, at least a part of the ejector device 20 is capable of protruding from the outer wall surface of the roller 10 under the driving of the driving device 30. In this embodiment, the ejector device 20 may protrude from the outer wall surface of the roller 10, and the roller 10 may eject and extend the part of the film 101 in contact with the opening 11 during the process of conveying the film 101, thereby changing the length of the film 101.

In some embodiments, when the unequal-length lamination mode is needed, the driving device 30 may drive the ejector device 20 to move to the ejected state, that is, at least a part of the ejector device 20 protrudes from the opening 11, thereby ejecting and extending the film 101 at the opening 11 and achieving the ratio of the length of film 101 to the length of the paperboard 102 greater than 1. When the equal-length lamination mode is needed, the driving device 30 may drive the ejector device 20 back to the retracted state (which also can be referred to as the initial state) , that is, back into the opening 11 and not protruding from the outer wall surface of the roller 10. The film 101 on the outer wall surface of the roller 10 is not ejected by the ejector device 20, and the ratio of the length of the film 101 to the length of the paperboard 102 is equal to 1.

In some embodiments, a shape of the roller 10 may be a columnar shape (e.g., a cylindrical shape, an elliptical column, a polygonal column) . The outer wall surface of the roller 10 may be understood as an outer surface of the roller 10 in contact with the film 101. In some embodiments, an extension direction (e.g., “X” shown in FIG. 7) of the opening 11 may be parallel to an axis direction of the roller 10 (e.g., a central axis direction of the roller 10) .

In some embodiments, the roller 10 may include a roller body 12 and a roller cover 13 provided on one end of the roller body 12. The opening 11 extends through the roller body 12 along the axis direction of the roller 10.

In some embodiments, the opening 11 may not extend through the roller body 12. In some embodiments, a size of the opening 11 along the axis direction of the roller 10 may be set according to the size of the film 101 along the axis direction of the roller 10. In order to ensure that the film 101 can be stretched evenly, the size of the opening 11 along the axis direction of the roller 10 can be larger than the size of the film 101 along the axis direction of the roller 10.

In some embodiments, the size of the opening 11 along the circumferential direction of the roller 10 may be related to the length of the film 101 to be stretched. For example, the larger the size of the opening 11 along the circumferential direction of the roller 10 is, the longer the film 101 ejected by the ejector device 20 may be, and the longer the extended film 101 may be. The smaller the size of the opening 11 along the circumferential direction of the roller 10 is, the shorter the film 101 ejected by the ejector device 20 may be, and the shorter the extended film 101 may be. Therefore, the size of the opening 11 may be be set according to the length that the film 101 needs to be stretched.

In some embodiments, a count of the openings 11 may be set as one or more. In some embodiments, when the count of the openings 11 is one, one sheet of film 101 may be stretched at a time. In some embodiments, when the count of the openings 11 is plural, multiple openings 11 may be provided at intervals along the circumferential direction of the roller 10, and a sheet of film 101 may be provided at each of the multiple openings 11, thereby stretching the multiple films 101 at the same time. In some embodiments, when the count of the openings 11 is plural, the multiple openings 11 may simultaneously stretch the same sheet of film 101. For example, the film 101 may cover the multiple openings 11, and multiple ejector devices 20 may stretch the film 101 at each opening 11, thereby increasing the ratio of the length of the film 101 to the length of the paperboard 102.

In some embodiments, the outer wall surface of the roller 10 may be provided with a first hole 14 and the ejector device 20 may be provided with a second hole 21. The paperboard-film lamination apparatus 100 may also include an adsorption member 50, which may adsorb the film 101 to the outer surface of the ejector device 20 and the outer wall surface of the roller 10 through the second hole in the ejector device 20 and the first hole 14 in the roller 10. Accordingly, it can be ensured that the film 101 can adhere to the outer wall surface of the roller 10 to achieve the function of stable transportation of the film 101.

In some embodiments, the adsorption member 50 may achieve the adsorption of the film 101 by sucking air from the interior of the roller 10. In some embodiments, when the adsorption member 50 sucks air from the interior of the roller 10 to achieve the adsorption of the film 101, the second hole 21 and the first hole 14 are opened on the ejector device 20 and the roller 10, respectively. The adsorption member 50 may adsorb the film 101 to the outer surface of the ejector device 20 and the outer wall surface of the roller 10 by sucking air from the interior of the roller 10 by means of holes.

In some embodiments, as described in connection with FIGs. 7-10, the adsorption member 50 may include a pumping pump or a vacuum pump. When the adsorption member 50 is activated, air may be sucked into the interior of the roller 10 through the first hole 14 and the second hole 21, so that a negative pressure is formed inside the roller 10 relative to the outside of the roller 10, thereby adsorbing the film 101 to the outer wall surface of the roller 10. In some cases, the extension of the length of the film 101 can be achieved by adsorbing the film 101 to the outer wall surface of the roller 10 by means of the adsorption member 50 and then by ejecting the film 101 at least partially by means of the ejector device 20. At the same time, even if the film 101 is ejected, it would not disconnect from the roller 10 and fall off due to a suction formed by the first hole 14 and the second hole 21, so that the outer wall surface of the roller 10 can adsorb and convey the film 101.

In some embodiments, there may be a plurality of first holes 14 and/or a plurality of second holes 21. In some embodiments, as shown in FIG. 7, the plurality of first holes 14 and the plurality of second holes 21 may be provided evenly at intervals, which can make the adsorption force on the surface of the ejector device 20 and the surface of the roller 10 uniform, so that the adsorption forces on multiple parts of the film 101 are uniform, thereby preventing the film 101 from being wrinkled due to uneven force.

In some embodiments, an opening shape of the first hole 14 and/or an opening shape the second hole 21 may be round, square, strip, etc. For example, as shown in FIG. 7, the first hole 14 and the second hole 21 are circular holes. Merely by way of example, when the first hole 14 and the second hole 21 are circular holes, the plurality of first holes 14 may be divided into several columns. The several columns of first holes 14 may be provided at intervals along the circumferential direction of the roller 10. Each column of first holes 14 may extend along the axis direction of the roller 10. In other embodiments, the first hole 14 and the second hole 21 may be bar-shaped holes. Merely by way of example, when the first hole 14 and the second hole 21 are bar-shaped holes, the first hole 14 and the second hole 21 may extend along the axis direction of the roller 10. When there are a plurality of first holes 14 and a plurality of second holes 21, the plurality of first holes 14 may be provided at intervals along the circumferential direction of the roller 10 and the plurality of second holes 21 may be provided at intervals along the circumferential direction of the roller 10. As another example, when the first hole 14 and the second hole 21 are bar-shaped holes, the first hole 14 and the second hole 21 may extend along the circumferential direction of the roller 10, the plurality of first holes 14 may be provided at intervals along the axis direction of the roller 10, and the plurality of second holes 21 may be provided at intervals along the circumferential direction of the roller 10.

In some other embodiments, the adsorption member 50 may also include other devices capable of generating suction, for example, a suction fan, a suction roller, etc. In some embodiments, as described in connection with FIGs. 7-12, the roller 10 may also include a suction roller (e.g., shown in FIG. 10) . In some embodiments, a suction device (not shown) and a control valve (not shown) are provided inside the suction roller, and a suction hole 51 is provided in the suction roller, and the suction device is connected to the suction hole 51. When the film 101 is transferred to the roller 10, the control valve may control the suction device to work. The suction device performs the suction through the suction hole 51 to form an adsorption airflow at the first hole 14 and the second hole 21 to adsorb the film 101 on the outer wall surface of the roller 10.

In some embodiments, the suction roller is provided inside the roller 10, and a central axis of the suction roller may be parallel to or coincident with the central axis of the roller 10. For example, the central axis 52 of the suction roller may be fixedly connected to the roller cover 13 of the roller 10. As another example, as described in connection with FIG. 11 and FIG. 12, the central axis 52 of the suction roller may be coaxially connected to a first driven shaft 3213 of a first driving unit 321 to allow the suction roller to rotate relative to the roller 10.

It should be noted that the suction roller may refer to a structure with a suction function and a cylindrical shape, so any device with the above characteristics can be called a suction roller. In some embodiments, the adsorption member 50 and the roller 10 may form a suction roller, wherein the adsorption member 50 may serve as the suction device of the suction roller and the roller 10 may serve as the cylindrical housing of the suction roller, thereby reducing the use of individual components and thus reducing the installation process and processing costs.

In some embodiments, the adsorption member 50 may blow air from outside of the roller 10 into the roller 10 to cause the film 101 to adhere to the outer surface of the ejector device 20 and the outer wall surface of the roller 10. For example, the paperboard-film lamination apparatus 100 may include a blowing device (e.g., a pump) provided on the outside of the roller 10. The blowing device is capable of blowing air to the outer wall surface of the roller 10 and the outer wall surface of the ejector device 20 so that the film 101 adheres to the outer wall surface of the ejector device 20 and the outer wall surface of the roller 10 under the action of the airflow. In some embodiments, the ejector device 20 and the roller 10 may be provided without holes when the blowing device is provided outside the roller 10.

In some embodiments, the paperboard-film lamination apparatus 100 may also include a cover slice 60 located within the roller 10 and may be used to change an opening/closing state of the first hole 14 and/or the second hole 21.

In some embodiments, as shown in FIG. 8, the cover slice 60 may include a body 63 and a connection portion 64. The body 63 extends along the axis direction (e.g., “X” shown in FIG. 8) of the roller 10. The body 63 is provided at a first end of the connection portion 64, and a second end of the connection portion 64 is connected to the driving device 30. The driving device 30 may drive the body 63 along the radial direction (e.g., “Y” shown in FIG. 8) of the roller 10 through the connection portion 64.

In some embodiments, the cover slice 60 may be moved under the driving of the driving device 30 to cut off the adsorption airflow formed at the holes or to weaken the strength of the adsorption airflow formed at the holes.

In this embodiment, cutting off the adsorption airflow formed at the holes may refer to cutting off the airflow between the holes and the adsorption member 50, making it impossible for the adsorption member 50 to create a negative pressure between the interior and the exterior of the roller 10.

In some embodiments, a count of the cover slice 60 may be set to one. In some embodiments, the cover slice 60 may include a first cover slice 61 corresponding to the ejector device 20.

The first cover slice 61 corresponding to the ejector device 20 may refer to that the first cover slice 61 corresponds to a position of the second hole 21 on the ejector device 20, or the first cover slice 61 is capable of moving to the position of the second hole 21 on the ejector device 20 to cover the second hole 21. In some embodiments, the first cover slice 61 is capable of moving to a state where it completely covers the second hole 21, thereby cutting off the adsorption airflow at the second hole 21. In this embodiment, the purpose of cutting off the adsorption airflow at the second hole 21 is: on the one hand, the ejector device 20 can eject and stretch the film 101; on the other hand, when the ejector device 20 returns to the retracted state, the film 101 can be stacked on the outer wall surface of the ejector device 20 by gravity to facilitate subsequent lamination with the paperboard (e.g., the paperboard 102 shown in FIG. 1) .

In some embodiments, during the switching of the ejector device 20 from the retracted state to the ejected state, the driving device 30 may drive the first cover slice 61 to move along the radial direction (e.g., “Y” shown in FIG. 7) of the roller 10. When moving to adhere to the inner wall surface of the roller 10 at the opening 11, the first cover slice 61 blocks the airflow through the second hole 21, so that no airflow can escape at the opening 11 of the roller 10, and thus the adsorption airflow formed by the adsorption member 50 at the second hole 21 can be cut off. As used herein, “adhere” refers to that the first cover slice 61 is against the inner wall surface of the roller 10, accordingly, air can’t or substantially can’t flow through a connection between the first cover slice 61 and the inner wall surface of the roller 10.

In some embodiments, a shape pf the cover slice 60 (e.g., the first cover slice 61) may be arc. In some cases, when the ejector device 20 is in the ejected state, the arc-shaped cover slice 60 can better adhere between the inner wall of the roller 10 at the opening 11, which can ensure that the airflow inside the roller 10 with the second hole 21 can be cut off, so that the adsorption airflow can’t be formed on the outer wall surface of the ejector device 20 and the adsorption force of the adsorption member 50 on the film 101 is cut off.

In some embodiments, referring to FIGs. 7-9, there may be a plurality of cover slices 60. In some embodiments, the cover slice 60 may include a first cover slice 61 and a second cover slice 62. The first cover slice 61 corresponds to the ejector device 20 and the second cover slice 62 corresponds to the roller 10.

The second cover slice 62 corresponding to the roller 10 may refer to that the second cover slice 62 corresponds to a position of the first hole 14 on the roller 10, or the second cover slice 62is capable of moving to the position of the first hole 14 on the roller 10 to cover the first hole 14. In some embodiments, the first cover slice 61 is capable of moving to a state where it completely covers the second hole 21, thereby cutting off the adsorption airflow at the second hole 21. The second cover slice 62 is capable of moving to partially cover the first hole 14, thereby weakening the strength of the adsorption airflow at the first hole 14. In this embodiment, if the adsorption force at the first hole 14 is too strong, it is necessary for the ejector device 20 to use a large force to eject the film 101, which may result in a damage of the film 101. Therefore, weakening the strength of the adsorption airflow at the first hole 14 can both avoid a too strong adsorption force at the first hole 14 which may result in that it is difficult for the ejector device 20 to eject the film 101 and maintain a certain adsorption force which allows the roller 10 to adsorb and convey the extended film 101.

In some embodiments, as shown in FIG. 9, when the driving device 30 drives the second cover slice 62 against the inner wall of the roller 10, the second cover slice 62 is capable of covering or partially covering the airflow through the first hole 14, thereby cutting off the adsorption airflow through the first hole 14 or weakening the strength of the adsorption airflow through the first hole 14.

In some specific embodiments, when the ejector device 20 is in the ejected state, when the second cover slice 62 moves to partially adhere to the inner wall of the roller 10, the adsorption force on the outer wall of the roller 10 may be weaken and the ejector device 20 can eject the film 101 for extension. In some embodiments, a slit may be reserved between the second cover slice 62 and the first hole 14 to allow the outer wall surface of the roller 10 to have a certain adsorption force, so that the extended film 101 can be adsorbed and conveyed.

In some embodiments, the slit may be formed by spacing a certain distance between the outer surface of the second cover slice 62 and the inner wall surface of the roller 10. In some embodiments, the spaced distance (i.e., the size of the slit) between the outer surface of the second cover slice 62 and the inner wall surface of the roller 10 may have an effect on the strength of the adsorption airflow at the first hole 14. For example, when the size of the slit increases, the strength of the adsorption airflow at the first hole 14 is enhanced and the adsorption force is increased. Conversely, when the size of the slit decreases, the strength of the adsorption airflow at the first hole 14 is weakened and the adsorption force is reduced.

In some embodiments, the first cover slice 61 and the second cover slice 62 may be arranged in a cylindrical shape along the circumferential direction of the roller 10 to make full use of the space inside the roller 10.

The first cover slice 61 and the second cover slice 62 arranged in a cylindrical shape along the circumferential direction of the roller 10 may refer to that the first cover slice 61 and the second cover slice 62 can be combined in a cylindrical shape along the circumferential direction of the roller 10. Merely by way of example, as shown in FIG. 9, there are six cover slice 60 enclosed in a cylindrical shape. The first cover slice 61 is provided at the opening 11 corresponding to the roller 10, and the remaining five are all second cover slices 62.

In some embodiments, the driving device 30 (e.g., the driving unit 31 shown in FIG. 7) may be connected to the first cover slice 61 and the second cover slice 62 to drive the first cover slice 61 and the second cover slice 62. In some embodiments, the first cover slice 61 and the second cover slice 62 may be connected to the same driving assembly of the driving unit 31. For example, as shown in FIG. 8, both the first cover slice 61 and the second cover slice 62 are connected to the first driving assembly 311. In some embodiments, the first cover slice 61 and the second cover slice 62 may be connected to different driving assemblies of different driving units 31 so that the first cover slice 61 and the second cover slice 62 are driven independently. For example, as shown in FIG. 14, the first cover slice 61 and the second cover slice 62 are connected to the second driving assembly 312 and the third driving assembly 313, respectively. More descriptions can be found in FIG. 14 and the descriptions thereof.

In some other embodiments, the cover slice 60 may be driven by other drive components. For example, the paperboard-film lamination apparatus 100 may include a second driving device (not shown) that is connected to the cover slice 60 to drive the movement of the cover slice 60 to a state that partially or completely covers the holes.

In some embodiments, the first cover slice 61 and the second cover slice 62 may move synchronously. For example, as shown in FIGs. 7-9, both the first cover slice 61 and the second cover slice and 62 are connected to a first transmission unit 321, so that the first cover slice 61 and the second cover slice 62 can also move synchronously. As another example, as shown in FIGs. 13-16, FIGs. 17-20, and FIGs. 21-23, both the first cover slice 61 and the second cover slice 62 are connected to the same transmission unit. In some embodiments, the first cover slice 61 and the second cover slice 62 may move asynchronously. More descriptions can be found in FIGs. 17-20 and the descriptions thereof.

In some embodiments, the paperboard-film lamination apparatus 100 may include a release member (not shown) , which may be provided within the roller 10 to release the film 101 from the outer wall surface of the ejector device 20 and the outer wall surface of the roller 10 through the first holes 14 and the second holes 21. In some embodiments, the release member may include a blowing device. In some embodiments, after the release member is activated, the release member may blow air into the first hole 14 to blow the film 101 adsorbed to the outer wall surface of the roller 10 away from the outer wall surface of the roller 10. In addition, the release member may blow air into the second hole 21 to blow the film 101 adsorbed to the outer wall surface of the ejector device 20 away from the outer wall surface of the ejector device 20.

In some embodiments, the release member may be used in conjunction with the adsorption member 50 to enable adsorption and release of the film 101. In some embodiments, the release member may include a pump body (e.g., a pumping pump, a vacuum pump) . In some embodiments, the release member and the adsorption member 50 may share a common pump body. The pump body may include a rotation device (not shown) that controls the pump body for suction or blowing. For example, two pipes may be set up inside the pump body, one of which is used for suction (also can be referred to as suction pipe) and the other is used for blowing (also can be referred to as blowing pipe) . When the film 101 needs to be absorbed on the roller 10 (i.e., the ejector device 20 is in the retracted state) , the rotation device may control the pump body to suck air from the exterior of the roller 10 to the interior of the roller 10 through the suction pipe via the holes to adsorb the film 101 to the outer wall surface of the ejector device 20 and the outer wall surface of the roller 10. When the ejector device 20 is switched to the ejected state, the rotation device may control the pump body to blow air outward through the hole (e.g., the second hole 21 shown in FIG. 7) to weaken or eliminate the adsorption force of the ejector device 20 on the film 101, so that the ejector device 20 can eject the film 101 with less force and effectively avoid the film 101 from breaking during the ejecting process. In some embodiments, the release member and the adsorption member 50 may include independent pump bodies respectively, for example, the pump body of the adsorption member 50 is used for suction and the pump body of the release member is used for blowing.

In some embodiments, the release member may include a first release member (not shown) and a second release member (not shown) . The first release member may be used to blow air into the first hole 14 and the second release member may be used to blow air into the second hole 21. In some cases, by providing the first release member and the second release member, it is easier to control the first release member and the second release member independently, so as to precisely control the adsorption force of the outer wall surface of the ejector device 20 and the outer wall of the roller 10 on the film 101. Merely by way of example, when the film 101 is stretched, it is necessary to cut off the adsorption force of the ejector device 20 on the film 101 and to maintain the adsorption force of the outer wall of the roller 10 on the film 101, accordingly, the second release member would be controlled to blow air while the first release member would be controlled to stop working.

In some embodiments, the release member may include a first air duct (not shown) and a second air duct (not shown) . One end of the first air duct is connected to the first release member and the other end is directed to the roller body 12 of the roller 10 to blow air into the first hole 14. One end of the second air duct is connected to the second release member and the other end is directed to the ejector device 20. The first air duct and the second air duct can ensure that the air blown from the release member flows to a specific region.

In some embodiments, as described in connection with FIGs. 7-9, the ejector device 20 may include a cover body 22 mounted at the opening 11 and a first connection assembly 23. A first end of the first connection assembly 23 is connected to the driving device 30, and a second end of the first connection assembly 23 is connected to the cover body 22. The driving device 30 may drive at least a part of the cover body 22 through the first connection assembly 23 to move along the radial direction of the roller 10 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10. In some embodiments, the first connection assembly 23 may include a connection rod.

In some embodiments, when there is no need to eject the film 101, the cover body 22 is in a retracted position and the outer surface of the cover body 22 is parallel to or depress from the outer wall surface of the roller 10.

In some embodiments, as shown in FIG. 7, a shape of the cover body 22 may be an arc shape, with a center of the arc-shaped cover body 22 overlapping with a center of a circle of the roller body 12 and the arc-shaped cover body 22 located on the circumference of the roller 10. Accordingly, when the cover body 22 is in the retracted state, the cover body 22 and the roller 10 can be spliced together to form a whole, that is, to form a complete outer circumference of the roller 10, which can make that the structure is more compact and the space utilization is improved.

In this embodiment, the center of the arc-shaped cover body 22 overlapping with the center of the circle of the roller body 12 may refer to that a center axis of the arc-shaped cover body 22 coincides with a center axis of the roller body 12.

In some embodiments, the cover body 22 may include a connection section 221 and an ejection section 222, wherein a shape and/or a size of the ejection section 222 are adapted to a shape and/or a size of the opening 11. The ejection section 222 is used to eject the film 101. The connection section 221 is used to connect the ejection section 222 to the first connection assembly 23. In some embodiments, the second hole 21 is provided in the ejection section 222. In some embodiments, in order to improve the adsorption stability of the adsorption member 50 on the film 101, there may be a plurality of second holes 21 provided at intervals along a length direction (i.e., the axial direction of the roller 10) of the ejection section 222, so that multiple parts of the film 101 located at the ejection section 222 can be subjected to the adsorption action of the adsorption member 50.

In some embodiments, the plurality of second holes 21 may include a plurality of columns of second holes 21, each column of second holes 21 may extend along the length direction (i.e., the axis direction of the roller 10) of the ejection section 222, and the plurality of columns of second holes 21 may be provided at intervals along a width direction (i.e., the circumferential direction of the roller 10) of the ejection section 222, such that the adsorption forces on multiple parts of the film 101 are uniform.

In some embodiments, the first connection assembly 23 and/or the connection section 221 may be located in the interior of the roller 10. In some other embodiments, as shown in FIG. 7, the first connection assembly 23 and the connection section 221 may be located on the exterior of the roller 10. A first end of the connection section 221 is connected to an end of the ejection section 222, and a second end of the connection section 221 is connected to an end of the first connection assembly 23 away from the driving device 30. In some embodiments, by setting the first connection assembly 23 and the connection section 221 on the exterior of the roller 10, the occupancy of the interior space of the roller 10 by the first connection assembly 23 and the connection section 221 can be reduced, and the interference with the moving parts within the roller 10 can be reduced. In some cases, a length of the first connection assembly 23 itself or a distance that the first connection assembly 23 can move radially along the roller 10 is an important factor that affects the height of the ejected film 101 ejected by the ejection section 222. Accordingly, by setting the first connection assembly 23 on the exterior of the roller 10, the length of the first connection assembly 23 extending along the radial direction of the roller 10 is not limited by the size of the roller 10 and can be set to a corresponding length according to actual needs.

In some embodiments, the cover slice 60 (e.g., the first cover slice 61 shown in FIG. 7) and the cover body 22 may be in a separate setting. For example, as shown in FIGs. 7-9 or FIGs. 13-16, the first cover slice 61 is provided separately from the cover body 22.

In this embodiment, the separate setting may refer to that the first cover slice 61 and the cover body 22 are set independently of each other.

In some embodiments, the cover slice 60 (e.g., the first cover slice 61 shown in FIG. 7) and the cover body 22 may be provided integrally. For example, as shown in FIGs. 17-20, the first cover slice 61 is provided integrally with the cover body 22. The integral setting may refer to that the first cover slice 61 and the cover body 22 are connected together by means including welding, bonding, one-piece molding, etc. More descriptions can be found in FIGs. 17-20 and descriptions thereof.

In some embodiments, at least a part of the ejector device 20 is capable of moving along a radial direction of the roller 10 under the driving of the driving device 30 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10. FIGs. 7-9 are schematic diagrams illustrating exemplary structures of the ejector device 20 under different states. Specifically, FIG. 7 is a schematic diagram illustrating an exemplary structure of the ejector device 20 in the retracted state; FIG. 9 is a schematic diagram illustrating an exemplary structure of the ejector device 20 in the ejected state.

In some embodiments, the driving device 30 may drive the first connection assembly 23 to move along the radial direction of the roller 10, thereby driving the cover body 22 to protrude from the outer wall surface of the roller 10 along the radial direction of the roller 10.

In some embodiments, as described in connection with FIGs. 7-9, the driving device 30 may include a driving unit 31 and a transmission unit 32. The transmission unit 32 is connected to the driving unit 31. The ejector device 20 and the cover slice 60 are connected to the transmission unit 32, respectively. The driving unit 31 is used to provide power to drive the ejector device 20 and the cover slice 60 through the transmission unit 32.

Merely by way of example, the driving device 30 may include a driving unit 31 and a transmission unit 32. The transmission unit 32 is provided with a slot (e.g., a first slot 3214) , wherein the first end of the first connection assembly 23 is limited within the slot (e.g., the first slot 3214) and moves within the slot (e.g., the first slot 3214) under the driving of the driving unit 31 so that the second end of the first connection assembly 23 drives at least a part of the cover body 22 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10. As another example, the driving device 30 may include a driving unit 31 and a transmission unit 32. The transmission unit 32 may include a second connection assembly (e.g., a second connection assembly 3217 shown in FIG. 21) , wherein a first end of the second connection assembly 3217 is connected to the driving unit 31 and a second end of the second connection assembly 3217 is connected to the cover body 22, the first end of the second connection assembly 3217 moves under the driving of the driving unit 31 so that the second end of the second connection assembly 3217 drives at least a part of the cover body (e.g., the cover body 22 shown in FIG. 21) to protrude from, be parallel to, or depress from the outer wall surface of the roller 10.

As yet another example, the driving device 30 may include a driving unit 31 and a transmission unit 32. The transmission unit 32 is provided with a slot (e.g., a second slot 3224) , wherein the first end of the cover slice 60 is limited within the slot (e.g., the second slot 3224) and moves within the slot (e.g., the second slot 3224) under the driving of the driving unit 31 so that the second end of the cover slice 60 moves along the radial direction of the roller 10.

In some embodiments, the cover slice 60 and the ejector device 20 may move synchronously under the driving of the driving unit 31. The synchronous movement may refer to that the cover slice 60 and the ejector device 20 move under the same driving assembly. For example, as shown in FIGs. 7-9, the cover slice 60 and the ejector device 20 move simultaneously along the radial direction of the roller 10. As another example, as shown in FIGs. 17-20, the cover slice 60 and the ejector device 20 move simultaneously, and both the cover slice 60 and the ejector device 20 move along the radial direction of the roller 10. In some embodiments, the cover slice 60, the ejector device 20 may move asynchronously under the driving of the driving unit 31. The asynchronous movement may refer to that the cover slice 60 and the ejector device 20 are driven by different driving assemblies and the movements of the cover slice 60 and the ejector device 20 are independent of each other. For example, as shown in FIGs. 13-16, the ejector device 20 moves asynchronously with the cover slice 60. In the present disclosure, the driving unit 31 and transmission unit 32 may have various structures, which will be described by specific examples below and are not intended to be limiting.

In some embodiments, the cover slice 60 and the ejector device 20 may move synchronously under the driving of the driving unit 31.

In some embodiments, as shown in FIG. 8, the driving unit 31 includes a first driving assembly 311, the transmission unit 32 includes a first transmission unit 321 and a second transmission unit 322. The ejector device 20 is connected to the first transmission unit 321 and moves under the driving of the first transmission unit 321. The cover slice 60 is connected to the second transmission unit 322 and moves under the driving of the second transmission unit 322.

In some embodiments, the first driving assembly 311 may include a first driving motor, the first driving motor includes a first output shaft 3111, and the first output shaft 3111 of the first driving motor may be connected to the first transmission unit 321 and the second transmission unit 322 to drive the first transmission unit 321 and the second transmission unit 322 synchronously. For example, the first driving motor may be a servo motor with a more precise which can improve the movement accuracy of the cover slice 60 and the ejector device 20. In some other embodiments, the first driving assembly 311 may include a battery, a hydraulic press, etc.

In some embodiments, the first transmission unit 321 may be provided with a gear transmission, a belt transmission, a crank rocker, etc. In some embodiments, the first transmission unit 321 is provided with a gear transmission structure. The following of the gear transmission structure is provided as an example.

In some embodiments, as shown in FIG. 8, the first transmission unit 321 includes a first active wheel 3211, a first driven wheel 3212, and a first driven shaft 3213, wherein the first active wheel 3211 is provided on the output shaft 3111 of the first driving assembly 311. The first driven shaft 3213 is rotatably mounted in the roller 10, specifically, rotatably mounted on the roller cover 13. An axis of the first driven shaft 3213 may coincide with or be parallel to an axis of the roller 10. The first driven wheel 3212 is fixed to the first driven shaft 3213 and engages with the first active wheel 3211. The first driven wheel 3212 is provided with a first slot 3214, and an end of the first slot 3214 is close to a rotation center of the first driven wheel 3212 and extends along a direction away from the rotation center of the first driven wheel 3212. One end of the first connection assembly 23 is limited to the first slot 3214. When the first driving assembly 311 drives the first active wheel 3211 to rotate, the first active wheel 3211 drives the first driven wheel 3212 to move, and the first driven wheel 3212 drives the first connection assembly 23 to move within the first slot 3214, causing the first connection assembly 23 moving along the radial direction of the roller 10. The first connection assembly 23 drives the cover body 22 to protrude from the opening 11 along the radial direction of the roller 10 and ejects the film 101 at the opening 11.

In some embodiments, as shown in FIG. 8, the first driven wheel 3212 includes a first rotating wheel 3215 and a first tooth ring 3216 snapped to the outside of the first rotating wheel 3215. The first tooth ring 3216 and the first rotating wheel 3215 are coaxially connected, and axial directions of the first tooth ring 3216 and the first rotating wheel 3215 are parallel or coincident with the axial direction of the roller 10.

In some embodiments, a shape of the first slot 3214 may be curved or linear. In some embodiments, when the shape of the first slot 3214 is curved, the first slot 3214 also can be referred to as an arc-shaped slot.

In some embodiments, an angle between a connection line of the two ends of the first slot 3214 and an end of the first slot 3214 that is close to the rotation center along the radial direction is greater than 0 degrees and less than 90 degrees. In some embodiments, the angle between a connection line of the two ends of the first slot 3214 and an end of the first slot 3214 that is close to rotation center along the radical direction may be from 20° to 70°. In some embodiments, the angle between the connection line between the two ends of the first slot 3214 and an end of the first slot 3214 that is close to rotation center along the radial direction may be 30° to 60°.

In some embodiments, as shown in FIG. 7 and FIG. 8, the first slot 3214 is provided on the first rotating wheel 3215. The ejector device 20 may also include a first limiting rod 24, wherein a first end of the first limiting rod 24 is connected to an end of the first connection assembly 23 that is back from the cover body 22, and a second end of the first limiting rod 24 is located within the first slot 3214. In this embodiment, when the ejector device 20 is in the retracted state, the first limiting rod 24 is located at an end of the first slot 3214 that is close to the center of the first driven wheel 3212. When the ejector device 20 is in the ejected state, the first limiting rod 24 is located at an end of the first slot 3214 that is away from the center of the first driven wheel 3212. When the first driving assembly 311 drives the first active wheel 3211 to rotate, the first active wheel 3211 drives the first driven wheel 3212 to move, and the first driven wheel 3212 drives the first limiting rod 24 to move within the first slot 3214, causing the first connection assembly 23 to move along the radial direction of the roller 10. The first connection assembly 23 drives the cover body 22 to protrude from the opening 11 along the radial direction of the roller 10 and ejects the film 101 at the opening 11.

In some cases, through the cooperation of the first limiting rod 24 and the first slot 3214, not only the rotational movement of the first driven wheel 3212 can be converted into the radial movement of the cover body 22 along the roller 10, but also the movement range of the cover body 22 can be limited. For example, when the first limiting rod 24 moves to the end of the first slot 3214 that is close to the center of the first driven wheel 3212, the first slot 3214 limits a continued movement of the first limiting rod 24, while the cover body 22 is in a retracted state. As another example, when the first limiting rod 24 moves to the end of the first slot 3214 that is away from the center of the first driven wheel 3212, the first slot 3214 limits the continued movement of the first limiting rod 24, while the cover body 22 is in the ejected state and the cover body 22 protrudes to the maximum extent from the outer wall surface of the roller 10. The center in this embodiment may be equivalent to the rotation center.

In some embodiments, the driving device 30 may also include a first guiding assembly 33 used to limit a movement direction of the first connection assembly 23, ensuring a movement of the cover body 22 along the radial direction the roller 10. In some embodiments, the first guiding assembly 33 may include a slide slot 331 extending in a direction parallel to the radial direction of the roller 10. One end of the slide slot 331 is fixed to the first driven shaft 3213. One end of the first connection assembly 23 where the first limiting rod 24 is mounted is located within the slide slot 331. In this embodiment, when the first driving member 311 drives the first active wheel 3211 to rotate, the first active wheel 3211 drives the first driven wheel 3212 to move, and the force applied by the first slot 3214 on the first limiting rod 24 causes the first limiting rod 24 to move in the first slot 3214, driving the first connecting assembly 23 to move along the slide slot 331 and realizing a movement of the cover body 22 along the radial direction of roller 10. In some other embodiments, the first guiding assembly 33 (e.g., the slide slot 331) and the first connection assembly 23 may also be provided in combination as a telescopic rod.

In some embodiments, the first rotating wheel 3215 and the first tooth ring 3216 are movably connected. Exemplary movable connections may include a snap connection, a magnetic connection, etc. In some embodiments, the first rotating wheel 3215 and the first tooth ring 3216 are fixedly connected. Exemplary fixed connections may include welding, bonding, one-piece molding, etc. For example, the first tooth ring 3216 may be welded to the first rotating wheel 3215 as an integral part. As another example, the first driven wheel 3212 itself is a gear, so the first slot 3214 may be provided directly on the first driven wheel 3212, that is, the first driven wheel 3212 is reused as the first rotating wheel 3215.

In some embodiments, a count of the first limiting rods 24, a count of the first connection assemblies 23, and a count of the cover bodies 22 correspond to each other. When the ejector device 20 includes a plurality of cover bodies 22, there are a plurality of corresponding first slots 3214, wherein each cover body 22 may be connected to one first slot 3214 via the first connection assembly 23 and the first limiting rod 24. In some embodiments, the count of the first slots 3214 may be greater than the count of the first limiting rods 24, the count of the first connection assemblies 23, and the count of the cover bodies 22, wherein one first limiting rod 24 may be connected to one of the first slots 3214. For example, as shown in FIG. 7, the count of the first slots 3214 is six, and the count of the first limiting rods 24, the count of the first connection assemblies 23, and the count of the cover bodies 22 is one, wherein the first limiting rod 24 is limited to one of the first slots 3214.

In some embodiments, the second transmission unit 322 may be provided with a gear transmission, a belt transmission, a crank rocker structure, etc. For example, the second transmission unit 322 is also provided with a gear transmission structure. The following of the gear transmission structure is provided as an example.

In some embodiments, as shown in FIG. 8, the second transmission unit 322 includes a second active wheel 3221 and a second driven wheel 3222, wherein the second active wheel 3221 is fixed to the output shaft 3111 of the first driving assembly 311 so as to share a power source with the first active wheel 3211, thereby enabling the second active wheel 3221 to move synchronously with the first active wheel 3211. In some cases, the second driven wheel 3222 is fixed to the first driven shaft 3213 so as to share a common rotation shaft with the first driven wheel 3212, and the engagement between the second driven wheel 3222 and the second active wheel 3221 can reduce the use of components, which not only reduces the machining process and the cost, but also makes the entire transmission unit 32 more compact.

In some embodiments, the second driven wheel 3222 and the first driven wheel 3212 may not share the same rotation shaft, and a separate rotation shaft is provided for the second driven wheel 3222, the solution of which is similar to the above and will not be repeated here.

In some embodiments, the second transmission unit 322 is provided with a second slot 3224. The driving device 30 may also include a second guiding assembly 34. A second limiting rod 65 is provided at an end of the connection portion 64 that is away from the cover slice 60. The connection portion 64 may slide relative to the second guiding assembly 34, and the second limiting rod 65 may cooperate with the second slot 3224 to convert the rotational movement of the second driven wheel 322 into a movement of the connection portion 64 along the radial direction of the roller 10. In some embodiments, the specific structure of the second transmission unit 322 is the same as or similar to that of the first transmission unit 321, the specific structure of the second limiting rod 65 is the same as or similar to that of the first limiting rod 24, and the specific structure of the second guiding assembly 34 is the same as or similar to that of the first guiding assembly 33, which will not be repeated here.

In some embodiments, the first active wheel 3211 and the second active wheel 3221 have the same count of teeth and the same diameter, and the first driven wheel 3212 and the second driven wheel 3222 have the same count of teeth and the same diameter, making the movement of the first driven wheel 3212 and the second driven wheel 3222 more synchronized. In some embodiments, the first active wheel 3211 and the second active wheel 3221 have different counts of teeth and different diameters, making that the first driven wheel 3212 and the second driven wheel 3222 move with differential speeds, so that movement distances of the cover slice 60 and the cover body 22 are different. For example, both the count of teeth and the diameter of the first driven wheel 3212 are smaller than those of the second driven wheel 3222, since the first active wheel 3211 and the second active wheel 3221 are the same, when the first active wheel 3211 and the second active wheel 3221 rotate at the same angle, the rotation angle of the first driven wheel 3212 is greater than the rotation angle of the second driven wheel 3222, making that the distance that the cover slice 60 moves along the radial direction of roller 10 is smaller than the distance that the cover body 22 moves along the radial direction of the roller 10. Merely by way of example, as shown in FIG. 8, when the ejector device 20 is in the ejected state, the cover body 22 is located outside of the roller 10 and the cover slice 60 is against the inner wall surface of the roller 10, so that the distances that cover slice 60 and the cover body 22 move along the radial direction of the roller 10 are different.

In some embodiments, the cover slice 60 may move along the axis direction (e.g., “X” shown in FIG. 7) of the roller 10. In some embodiments, the roller 10 may be provided with an insert slot (not shown) extending along the axial direction, and the operator may insert the cover slice 60 into the insert slot and manually control the length of the cover slice 60 into the insert. For example, the count of the second holes 21 covered by the first cover slice 61 may be controlled by adjusting the length of the first cover slice 61 into the insert slot along the axis direction of the roller 10, thereby controlling the adsorption force at the ejector device 20.

In some embodiments, the transmission unit 32 (e.g., the second transmission unit 322) may include a first moving assembly (not shown) connected to the cover slice 60 and driving the cover slice 60 to move along the central axis direction (e.g., “X” shown in FIG. 7) of the roller 10 under the driving of the driving unit 31. In some cases, by providing the first moving assembly, a position of the cover slice 60 along the axis direction of the roller 10 can be adjusted to adapt to various application scenarios. For example, the count of the first holes 14 covered by the second cover slice 62 may be controlled by adjusting the position of the second cover slice 62 along the axis direction of the roller 10, thereby controlling the adsorption force on the outer wall surface of the roller 10.

In some embodiments, a first end of the first moving assembly may be connected to the connection portion 64 and a second end of the first moving assembly may be connected to the end of the cover slice 60. The first moving assembly may extend along the axis direction of the roller 10. In some embodiments, the first moving assembly may include an independent power source for delivering power to the first moving assembly to drive the movement of the cover slice 60.

In some embodiments, the first moving assembly may include a telescopic assembly (not shown) with a telescopic direction parallel to the axis direction of the roller 10. The telescopic assembly may telescope along the axis direction of the roller 10 to drive the movement of the cover slice 60. Exemplary telescopic assembly may include a telescopic rod, a slide slot slide assembly, etc.

In some embodiments, the transmission unit 32 (e.g., the second transmission unit 322) may further include a second moving assembly (not shown) connected to the cover slice 60 and driving the cover slice 60 to move along the circumferential direction (e.g., “Z” shown in FIG. 7) of the roller 10 under the driving of the driving unit 31. In some cases, by providing a second moving assembly, the position of the cover slice 60 along the circumferential direction of the roller 10 may be adjusted to adapt to various application scenarios. Similarly, the count of the first holes 14 covered by the second cover slice 62 may be controlled by adjusting the position of the second cover slice 62 along the circumferential direction of the roller 10, thereby controlling the adsorption force on the outer wall surface of the roller 10. In some embodiments, the second moving assembly may include an independent power source for delivering power to the second moving assembly to drive the movement of the cover slice 60.

In some embodiments, the second moving assembly may include a collar (not shown) provided within the roller 10 and capable of rotating along the central axis of the roller 10. For example, as shown in FIG. 7, the collar may be snapped onto the outer wall of the first driven shaft 3213.

In some embodiments, the second moving assembly may include a moving track provided around the central axis of the roller 10, and the cover slice 60 may be moved along the moving track.

In some embodiments, as shown in FIG. 7, the paperboard-film lamination apparatus 100 may also include an adjusting device 40. The adjusting device 40 may be connected to the ejector device 20. The adjusting device 40 may be used to adjust the height of the ejector device 20 protruding from the outer wall surface of the roller 10 to adjust a ratio of the length of the film 101 to the length of the paperboard 102. In some cases, the ratio of the length of the film 101 to the length of the paperboard 102 can be sufficiently adjusted by adjusting a relative position of the roller 10 and the ejector device 20 along the radial direction of the roller 10 through the adjusting device 40 and changing the height of the film 101 that the ejector device 20 ejects. Accordingly, the paperboard-film lamination apparatus 100 can be applied in various application scenarios.

In this embodiment, the relative position of the ejector device 20 and the roller 10 along the radial direction of the roller 10 may refer to a height of the ejector device 20 protruding from the outer wall surface of the roller 10. When the height of the ejector device 20 protruding from the outer wall surface of the roller 10 changes, the ratio of the length of the film 101 to the length of the paperboard 102 changes.

In some embodiments, as shown in FIG. 7, the adjusting device 40 may be provided between the transmission unit 32 and the ejector device 20, wherein a first end of the adjusting device 40 is connected to the transmission unit 32 and a second end of the adjusting device 40 is connected to the ejector device 20. The transmission unit 32 may drive the adjusting device 40 and the ejector device 20 to move. In some embodiments, the movement of the ejector device 20 needs to be achieved through the transfer of the adjusting device 40. In some embodiments, the adjusting device 40 may not be provided between the transmission unit 32 and the ejector device 20. For example, the ejector device 20 may be connected to the transmission unit 32 alone, or the adjusting device 40 may be connected to the ejector device 20 alone.

In some embodiments, the adjusting device 40 includes an automatic adjusting device 41 (e.g., an automatic adjusting device 41 shown in FIGs. 7-9) or a manual adjusting device 42 (e.g., a manual adjusting device 42 shown in FIGs. 13-16) . The automatic adjusting device 41 achieves the adjustment of the position of the ejector device 20 automatically. The manual adjusting device 42 achieves the adjustment of the position of the ejector device 20 by means of manual adjustment. In this present disclosure, the adjusting means may be selected according to actual needs, which are not intended to be limiting.

In some embodiments, the adjusting device 40 may include a first guiding structure and a power source (not shown) . The first guiding structure is connected to the driving device 30, the first guiding structure extends along the radial direction of the roller 10, and the ejector device 20 is movably connected to the first guiding structure, and the driving device drives the first guiding structure to move along the radical direction of the roller. The power source is connected to the ejector device 20 and drives the ejector device 20 to move along the extension direction of the first guiding structure relative to the first guiding structure.

In some embodiments, the first guiding structure is the same or similar to the first guiding member in other embodiments of the present disclosure. Merely by way of example, as shown in FIG. 7 and FIG. 8, the first guiding structure and the first guiding assembly 33 may be the same structure.

In some other embodiments, the first guiding structure may be different from the first guiding assembly. Merely by way of example, the first guiding structure may further include a robotic arm (not shown) and a slide rail (not shown) adapted to the robotic arm, wherein the slide rail extends along the radial direction of the roller 10. One end of the robotic arm may move along the slide rail, and the other end of the robotic arm may be connected to the ejector device 20 (e.g., the first connection assembly 23 of the ejector device 20) , thereby driving the ejector device 20 to move along the radial direction of the roller 10.

As shown in FIG. 7 and FIG. 8, in some embodiments, the power source is provided on the first guiding structure (e.g., the first guiding assembly 33) . The first guiding assembly 33 is movably connected to the first connection assembly 23. The power source is connected to the first connection assembly 23 and is capable of automatically driving the first connection assembly 23 and the cover body 22 to move along the extension direction of the first guiding assembly 33 relative to the first guiding assembly 33.

In some embodiments, when the height that the ejector device 20 protrudes from the outer wall surface of the roller 10 is adjusted, the position of the ejector device 20 may be roughly adjusted first by the driving unit 31, and then precisely adjusted by the automatic adjusting device 41.

In some embodiments, when the position of the ejector device 20 is roughly adjusted by the driving unit 31, the adjusting device 40 (e.g., the automatic adjusting device 41) may stop working, and the first guiding structure is fixed relative to the first connection assembly 23. A first end of the first limiting rod 24 may be fixedly connected to the first guiding structure, and a second end of the first limiting rod 24 is located in the first slot 3214. The first driving member 311 drives the first limiting rod 24 to move in the first slot 3214, driving the first guiding structure to move and finally driving the ejector device 20 to move through the first connection assembly 23. When the moving of the driving unit 31 is finished, the automatic adjusting device 41 can be activated and drive the first connection assembly 23 to move relative to the first guiding structure, thereby driving the ejector device 20 to move.

In some embodiments, the power source can be automatically controlled as needed so that the position of the ejector device 20 can be adjusted on its own according to needs. In some embodiments, the height that the cover body 22 moves along the radial direction of the roller 10 can be automatically and continuously adjusted by the power source, so that the height of the film 101 can be freely adjusted without stopping the production line, which significantly reduces the adjustment difficulty, improves efficiency, and increase production. Specifically, the power source may be a structure such as a cylinder, a screw, a slide rail, etc. For example, the power source is set to be a cylinder and the first guiding assembly 33 is a slide slot 331. The first connection assembly 23 is slidably provided in the slide slot 331, and the cylinder is connected to the first connection assembly 23 so as to drive the first connection assembly 23 to slide to a predetermined position in the slide slot 331.

In some embodiments, the automatic adjusting device 41 may include a controller (not shown) and a position sensor (not shown) . The controller may be communicatively connected to the driving unit 31 and the distance sensor. The distance sensor may be used to detect the position of the first connection assembly 23 in the slide slot 331 and generate a corresponding sensing signal, and the controller may determine the height of the ejector device 20 protruding from the outer wall surface of the roller 10 based on the sensing signal. In some embodiments, when the controller determines that the height of the ejector device 20 protruding from the outer wall surface of the roller 10 reaches a preset height, the driving unit 31 may be controlled to stop working. In some embodiments, when the controller determines that the height of the ejector device 20 protruding from the outer wall surface of the roller 10 has not reached the preset height, the driving unit 31 may be controlled to continue to work and drive the first active wheel 321 to rotate, thereby driving the ejector device 20 to continue to move.

FIGs. 13-16 are schematic diagrams illustrating another exemplary structure of the driving device 30. In some embodiments, the structures of the driving device 30, the cover slice 60, the ejector device 20, and the roller 10 in FIGs. 13-16 are the same or similar to those of the driving device 30, the cover slice 60, the ejector device 20, and the roller 10 in FIGs. 7-9. The differences include: (1) the driving unit 31 in FIGs. 13-16 includes two independent driving assemblies, and the cover slice 60 and the ejector device 20 move asynchronously under the driving of the different driving assemblies, respectively; (2) the manual adjusting device 42 is used in the embodiments of FIGs. 13-16.

In some embodiments, as described in connection with FIGs. 13-16, the driving unit 31 includes a second driving assembly 312 and a third driving assembly 313. The transmission unit 32 includes a third transmission unit 323 and a fourth transmission unit 324. The second driving assembly 312 is connected to the third transmission unit 323, and the third driving assembly 313 is connected to the fourth transmission unit 324. The ejector device 20 is connected to the third transmission unit 323 and moves under the driving of the third transmission unit 323. The cover slice 60 is connected to the fourth transmission unit 324 and moves under the driving of the fourth transmission unit 324. In some cases, the ejector device 20 and the cover slice 60 are controlled by independent driving assemblies, and the movements of the ejector device 20 and the cover slice 60 are independent of each other.

In some embodiments, the second driving assembly 312 and the third driving assembly 313 are disposed on opposite sides. In some cases, the second driving assembly 312 and the third driving assembly 313 are arranged on opposite sides to avoid interference in the movements of the second driving assembly 312 and the third driving assembly 313. The second driving assembly 312 and the third driving assembly 313 disposed on opposite sides may refer to that the second driving assembly 312 and the third driving assembly 313 are disposed on opposite sides within the roller 10. For example, the second driving assembly 312 and the third driving assembly 313 are provided symmetrically relative to the central axis of the roller 10.

In some embodiments, the second driving assembly 312 may include a second driving motor and the third driving assembly 313 may include a third driving motor. The second driving motor may include a second output shaft 3121, and the third driving motor may include a third output shaft 3131. In some embodiments, the second driving assembly 312 and the third driving assembly 313 may be the same as or similar to the first driving assembly 311.

In some embodiments, the third transmission unit 323 and the fourth transmission unit 324 may be set as a gear transmission, a belt transmission, a crank rocker, etc. For example, the third transmission unit 323 and the fourth transmission unit 324 may both be provided with a gear transmission structure.

In some embodiments, the third transmission unit 323 may include a third active wheel 3231, a third driven wheel 3232, and a third driven shaft 3233. The third driven wheel 3232 is provided on the third driven shaft 3233, the third active wheel 3231 is provided on the output shaft 3121 of the second driving assembly 312, and the third driven wheel 3232 engages with the third active wheel 3231. In some embodiments, the third driven wheel 3232 is provided with a third slot 3234. The first limiting rod 24 of the ejector device 20 may be limited in the third slot 3234. In this embodiment, the second driving assembly 312 may drive the third active wheel 3231 to rotate, driving the third driven wheel 3232 to rotate and ultimately driving the movement of the cover body 22 connected to the first limiting rod 24.

In some embodiments, the fourth transmission unit 324 may include a fourth active wheel 3241, a fourth driven wheel 3242, and a fourth driven shaft (not shown) . The fourth driven wheel 3242 is provided on the fourth driven shaft, the fourth active wheel 3241 is provided on the output shaft 3131 of the third driving assembly 313, and the fourth driven wheel 3242 engages with the fourth active wheel 3241. In some embodiments, the third driven wheel 3232 is coaxially connected to the fourth driven wheel 3242, and the third driven wheel 3232 and the fourth driven wheel 3242 share a common rotation shaft (e.g., the third drive shaft 3233) . In some embodiments, the fourth driven wheel 3242 is provided with a fourth slot 3244. The second limiting rod 65 may be limited in the fourth slot 3244. In this embodiment, the third driving assembly 313 may drive the fourth active wheel 3241 to rotate, driving the fourth driven wheel 3242 to rotate and ultimately driving the movement of the cover slice 60 connected to the fourth driven wheel 3242.

In some embodiments, the third transmission unit 323, the fourth transmission unit 324, and the first transmission unit 321 may have substantially the same structure. For example, the third active wheel 3231, the third driven wheel 3232, and the third driven shaft 3233 may be the same as the first active wheel 3211, the first driven wheel 3212, and the driven shaft 3213 shown in FIG. 7, which are not be repeated here.

As shown in FIGs. 13-16, in some embodiments, the adjusting device 40 includes a second guiding structure and a locking member 43. The second guiding structure is connected to the driving device 30. The second guiding structure extends along the radial direction of the roller 10, and a plurality of adjusting positions are provided at intervals on the second guiding structure along the extension direction of the second guiding structure. The ejector device 20 selectively fits into at least one adjusting position. The locking member 43 is used to lock the fitted ejector device 20 to the second guiding structure.

In this embodiment, the first connection assembly 23 of the ejector device 20 is capable of moving relative to the second guiding structure to adjust the position of the first connection assembly 23 on the second guiding structure. The locking member 43 is used to lock the adjusted first connection assembly 23 to the second guiding structure, so that the first connection assembly 23 and the cover body 22 are fixed relative to the second guiding structure. The locking member 43 may also be used to unlock the second guiding structure from the first connection assembly 23 to allow the movement of the first connection assembly 23 and the cover body 22 relative to the second guiding structure. The first connection assembly 23 may be fixed at any of the adjusting positions by the locking member 43 so that the position of the first connection assembly 23 on the connection collar 25 can be adjusted, thereby changing the height of the film 101 that the ejector device 20 can eject.

In some embodiments, the locking member 43 may be provided as a fastener such as a pin, a bolt, etc. In some embodiments, the second guiding structure is the same or similar to the second guiding assembly 34 as described elsewhere in the present disclosure. Merely by way of example, in the embodiment shown in FIGs. 13-16, the second guiding structure may be the second guiding assembly 34. As another example, the second guiding structure may also include a robotic arm and a slide rail adapted to the robotic arm, more descriptions can be found elsewhere in the present disclosure.

In some embodiments, when the height of the ejector device 20 protruding from the outer wall surface of the roller 10 is adjusted, the position of the ejector device 20 may be roughly adjusted first by the driving unit 31, and then precisely adjusted by the manual adjusting device 42.

In some embodiments, when the position of the ejector device 20 is roughly adjusted by the driving unit 31, the ejector device 20 may be locked to the second guiding structure by the locking member 43, and the second guiding structure is fixed relative to the ejector device 20. The first end of the first limiting rod 24 may be fixedly connected to the second guiding structure, and the second end of the first limiting rod 24 is located in the first slot 3214. The first driving member 311 drives the first limiting rod 24 to move in the first slot 3214, driving the second guiding structure to move and finally driving the ejector device 20 to move. When the moving of the driving unit 31 is finished moving, the locking member 43 can be activated and the ejector device 20 is driven to move relative to the second guiding structure by the manual adjusting device 42.

In some embodiments, each adjusting position is provided with a corresponding connection hole (not shown) . The first connection assembly 23 of the ejector device 20 is provided with a mating hole (not shown) , and the locking member 43 may pass through the mating hole and the connection hole at the corresponding position to make that the second guiding assembly 34 is fixedly connected to the first connection assembly 23, so as to fix the ejector device 20 in a specific position. In this embodiment, before the height of the ejector device 20 needs to be adjusted, the locking member 43 may be removed from the mating hole and the connection hole, allowing the first connection assembly 23 to move relative to the second guiding assembly 34. Then the first connection assembly 23 or the cover body 22 can be manually gripped to a specific position to align the mating hole with the connection hole. Finally, the locking member 43 is inserted into the mating hole and the connection hole to lock the first connection assembly 23 with the second guiding assembly 34.

In some embodiments, a plurality of snap notches (not shown) are provided at intervals on the second guiding assembly 34 along the extension direction of the second guiding assembly 34, and snap fasteners (not shown) are provided on the first connection assembly 23. The snap fasteners may be seated in the snap notches, and the locking member 43 may be used to lock the snap fasteners in place and prevent them from popping out of the snap notches. In this embodiment, when the height of the ejector device 20 needs to be adjusted, the locking member 43 may be removed and the snap fasteners may be removed from the snap notches, allowing the first connection assembly 23 to move relative to each other. Then the first connection assembly 23 or the cover body 22 may be manually gripped to a specific position to snap the snap fasteners into the corresponding snap notches. Finally, the snap fasteners are locked in place by the locking member 43, thereby locking the first connection assembly 23 and the second guiding assembly 34.

In some embodiments, the structure of the adjusting device 40 is not limited to the manner described above or shown in the figures. For example, the second guiding structure is combined with the first connection assembly 23 to form a telescopic rod. As another example, as shown in FIGs. 21-24, the telescopic linkage 32173 is equivalent to the adjusting device 40, and the length of the telescopic linkage 32173 is adjusted to control the ejection device 20 to eject a certain angle, realizing different extension lengths of the film 101 and achieving flexible adjustment of the film-to-paperboard ratio in the paperboard-film lamination apparatus 100. More information of the telescopic linkage can be found in FIGs. 21-24 and the descriptions thereof.

FIGs. 17-20 are schematic diagrams illustrating an exemplary structure of another ejector device 20 and the cover slice 60. In some embodiments, as described in connection with FIGs. 17-20, the cover slice 60 may include a first cover slice 61 and a second cover slice 62, wherein the first cover slice 61 corresponds to the ejector device 20 and the second cover slice 62 corresponds to the outer wall surface of the roller 10. The first cover slice 61 may be integrally provided with the cover body 22. In some cases, when the first cover slice 61 and the cover body 22 are integrally set, only one driving device 30 (or driving unit 31) is needed to control the movement of both the first cover slice 61 and the cover body 22, which can effectively simplify the structure of the driving device 30 and reduce the material cost and processing cost.

In some embodiments, a body 63 of the first cover slice 61 is provided between the cover body 22 and the first connection assembly 23 (e.g., the second end 232 of the first connection assembly 23) , and the cover body 22 and the body 63 of the first cover slice 61 are integrally formed.

In some embodiments, the first cover slice 61 and the cover body 22 (where a second hole is provided) are provided at intervals to form the channel 25. When the ejector device 20 is in the ejected state, the first cover slice 61 moves with the first connection assembly 23 and rests against the inner wall of the roller 10 at the opening 11, thereby cutting off the air connection between the interior of the roller 10 and the channel 25. Air can’t flow between the second hole 21 and the interior of the roller 10, making that an adsorption airflow can’t formed on the surface of the cover 22, thereby cutting off the adsorption force of the adsorption member 50 on the film 101 at the opening 11. Accordingly, as shown in FIG. 5, the propped up and extended film 101 folds over the outer surface of the cover 22 due to its own gravity, and when the paperboard and the film are laminated, a paperboard-film product is formed.

Merely by way of example, the channel 25 for air flow is formed inside the integral structure formed by the first cover slice 61 and the cover body 22, and the second hole 21 may serve as one outlet of the channel 25. When the ejector device 20 is in the retracted state, the outer surface of the cover 22 is parallel to or depresses from the outer wall surface of the roller 10, and the other outlet of the channel 25 is located inside the roller 10, so that the second hole 21 can be connected to the interior of the roller 10 through the channel 25 for air flow. Accordingly, an adsorption airflow can be formed at the second hole 21 by the adsorption member 50. When the ejector device 20 is in the ejected state, the outer surface of the cover slice 60 is against the inner wall surface of the roller 10, and the other outlet of the channel 25 is located outside the roller 10, so that the second hole 21 can’t be connected to the interior of the roller 10 through the channel 25. Accordingly, the adsorption airflow can’t be formed at the second hole 21 through the adsorption member 50.

In some cases, when the driving device 30 drives the first connection assembly 23 to move, the driving device 30 is capable of driving the cover body 22 and the body 63 to move along the roller 10 synchronously. When the driving device 30 drives the cover body 22 to move along the radiation direction of the roller 10 to a specific height, the first cover slice 61 moves synchronously to fit against the inner wall of the roller 10, thereby cutting off the adsorption airflow on the surface of the cover body 22.

In some embodiments, the driving unit 31 may also include a fourth driving assembly 314 and the transmission unit 32 may also include a fifth transmission unit 325. The fourth driving assembly 314 is connected to the fifth transmission unit 325, and both the ejector device 20 and the cover slice (e.g., the first cover slice 61 and the second cover slice 62) are connected to the fifth transmission unit 325 and move synchronously under the driving of the fifth transmission unit 325.

In some embodiments, the fourth driving assembly 314 may be the same as or similar to the first driving assembly 311, which are not repeated herein. In some embodiments, the fifth transmission unit 325 may be provided with a gear transmission, a belt transmission, or a crank rocker, etc. For example, the fifth transmission unit 325 may be provided with a gear transmission structure.

In some embodiments, the fifth transmission unit 325 may include a fifth active wheel 3251. The fifth active wheel 3251 is set on the fourth output shaft 3141. In some embodiments, the fifth active wheel 3251 is provided with a count of fifth slots 3254. The first limiting rod 24 and the second limiting rod 65 are limited in different fifth slots 3254. The first limiting rod 24 is connected to the first connection assembly 23 of the ejector device 20. The second limiting rod 65 is connected to the connection portion 64 of the first cover slice 61. In this embodiment, the fourth driving assembly 314 may drive the fifth active wheel 3251 to rotate and drive a synchronous movement with the first cover slice 61 and the cover body 22. In some embodiments, the fifth transmission unit 325 may be the same as or similar to the first transmission unit 321 shown in FIG. 7. For example, the fifth active wheel 3251 and the fifth slot 3254 may be the same as or similar to the first active wheel 3211 and the first slot 3214 respectively.

In this embodiment, since both the connection portion 64 of the first cover slice 61 and the connection portion 64 of the second cover slice 62 are limited in the fifth slot 3254 by the second limiting rod 65, the first cover slice 61 and the second cover slice 62 move synchronously. In some embodiments, the first cover slice 61 and the second cover slice 62 may move asynchronously. In some embodiments, the driving unit 31 may also include a fifth driving member (not shown) independent of the fourth driving assembly 314. The transmission unit 32 may also include a sixth transmission unit (not shown) connected to the fifth driving member. The second cover slice 62 may be connected to the sixth transmission unit. Accordingly, the fifth driving member drives the sixth transmission unit to drive the movement of the second cover slice 62, while the fourth driving assembly 314 drives the fifth transmission unit 325 to drive the movement of the first cover slice 61. In some embodiments, the fifth driving member may be the same as or similar to the first driving assembly 311. The sixth transmission unit may be the same or similar to the first transmission unit 321.

FIGs. 21-27 are schematic diagrams illustrating an exemplary structure of another driving device 30. In the embodiment shown in FIGs. 21-27, at least a part of the ejector device 20 is capable of rotating relative to the roller 10 to protrude from, be parallel to, or depress from the outer wall surface of the roller 10 through the opening 11.

In some embodiments, when the ejector device 20 is in the ejected state, the cover body 22 is raised to eject the film 101 under the driving of the driving device 30. A front side portion of the cover body 22 along the transfer direction (e.g., “A” shown in FIG. 21) of the film 101 is raised, and a rear side portion of the cover body 22 is left untouched or lowered, that is, the cover body 22 is flipped along an opposite direction of the transfer direction of the roller 10. Compare with the retracted state, only a distance between the outer surface of the front side portion of the cover body 22 and the outer wall surface of the roller 10 is increased.

In some embodiments, when the ejector device 20 is in the ejected state, an outer surface of a side of the cover body 22 that is back from the transfer direction of the roller 10 is parallel to the outer wall surface of the roller 10.

In some embodiments, when the ejector device 20 is in the ejected state, the front side portion of the cover body 22 is raised under the driving of the driving device 30. Compared with the retracted state, the outer surface of the rear side portion of the cover body 22 is parallel to the outer wall surface of the roller 10, and the distance between the outer surface of the front side portion of the cover body 22 and the outer wall surface of the roller 10 is increased. While the cover body 22 ejects the film 101, it also can be ensured that the film 101 at a junction of the cover body 22and the roller 10 is creased or squeezed.

It should be noted that in order to ensure that the film 101 can be pulled forward smoothly when the cover body 22 is flipped and lifted, the adsorption airflow near the cover body 22 needs to be diminished or completely eliminated. In some embodiments, when the ejector device 20 is in the ejected state, no adsorption airflow is formed between the outer wall surface of the roller 10 and the outer wall surface of the cover body 22. For example, no holes are provided in both the cover body 22 and the roller 10. As another example, the adsorption member (e.g., the adsorption member 50 shown in FIG. 9) inside the roller 10 may be closed. As a further example, the release member may be activated to blow air through the holes in the roller 10 and the cover body 22. When the ejector device 20 is in the ejected state, the cover body 22 can eject the film 101 even if it is flipped in the opposite direction of the transfer direction of the roller 10.

In some embodiments, as described in connection with FIGs. 21-27, the cover body 22 is flipped in the opposite direction of the transfer direction of the roller 10. The cover body 22 is located above the roller 10, the front and rear ends of the film 101 are adsorbed on the surface of the roller 10, and the ejected film 101 is stacked under gravity to achieve stacking extension.

In some embodiments, the structures of the driving unit 31, the cover slice 60, the ejector device 20, and the roller 10 shown in FIGs. 21-27 are the same or similar to those of the driving unit 31, the cover slice 60, the ejector device 20, and the roller 10 respectively shown in FIGs. 7-9. The difference is that the first driving unit 321 shown in FIGs. 21-27 includes a gear pair (e.g., a first active wheel 3211, a first driven wheel 3212, and a first driven shaft 3213) and a second connection assembly 3217. The cover slice 60 is connected to the gear pair, and the ejector device 20 is directly connected to the first driving member via the second connection assembly 3217. For example, the first driving assembly 311 is connected to one end of the second connection assembly 3217, the other end of the second connection assembly 3217 that is back from the first driving assembly 311 is connected to the cover body 22, and the first driving assembly 311 drives the ejector device 20 to rotate relative to the roller 10 through the second connection assembly 3217 to protrude from the outer wall surface of the roller 10. The first driving assembly 311 is connected to the cover slice 60 through the gear pair and drives the movement of the cover slice 60 through the gear pair.

Referring to FIGs. 21-27, in some embodiments, the second connection assembly 3217 includes a first linkage 32171, a second linkage 32172, and a telescopic linkage 32173. The output shaft 3111 of the first driving assembly 311 is connected to a first end of the first connection rod 32171, and a second end of the first connection rod 32171 is rotatably connected to a first end of the telescopic linkage 32173. A second end of the telescopic linkage 32173 is rotatably connected to a first end of the second linkage 32172, and a second end of the second linkage 32172 is connected to the cover body 22. The second linkage 32172 is provided along the axis direction of the roller 10. When the output shaft 3111 of the first driving assembly 311 rotates, the first linkage 32171 and the telescopic linkage 32173 may be driven to move, and a side of the cover body 22 that is not rotatably connected to the roller 10 is protruded from the roller 10 and raised at an angle θ by the second linkage 32172, so that at least a part of the cover body 22 protrudes from the outer wall surface of the roller 10 to eject and extend the film 101.

In some embodiments, when the output shaft 3111 of the first driving assembly 311 rotates, the first active wheel 3211 and the first driven wheel 3212 are driven to rotate and the second connection assembly 3217 is simultaneously driven to move. The cover body 22 protrudes from the roller 10 and forms an angle with the outer wall surface of the roller 10 to eject and extend the film 101, while driving the connection portion 64 and the body 63 to move along the radial direction of the roller 10 so that the body 63 fits the inner wall at the opening of the roller 10 to cut off the adsorption airflow at the second hole 21, realizing the simultaneous driving of the cover slice 60 and the ejector device 20.

In some embodiments, when the second limiting rod 65 is in the position shown in FIG. 21, the second limiting rod 65 is located at an end of the first slot 3214 near the center of the first driving wheel 3212, and the cover body 22 is not extended. When the second limiting rod 65 is in the position shown in FIGs. 22-24, the cover body 22 expands to its maximum angle and the outer surface of the cover slice 60 overlaps with the inner surface of the roller 10. At this point, the first active wheel 3211 drives the second connection assembly 3217 upward to eject the cover body 22 as the minimum flip-up angle, that is, a minimum length that the film 101 can be extended. In some embodiments, the raising angle θ of the cover body 22 can be controlled by adjusting the length of the second connection assembly 3217 to achieve different extension lengths of the film 101 and flexible adjustment of the ratio of film length to paperboard length in the paperboard-film lamination apparatus 100. For example, when the raising angle θ of the cover body 22 needs to be increased, the length of the telescopic linkage 32173 may be increased; when the raising angle θ of the cover body 22 needs to be reduced, the length of the telescopic linkage 32173 may be shortened.

In some embodiments, the second end (i.e., the end that is back from the first driving assembly 311) of the second connection assembly 3217 may be connected to the cover body 22 by a linkage (e.g., the first linkage 32171, the second linkage 32172) that may be a telescopic rod and a connection shaft 32174.

It should be understood that the telescopic linkage 32173 has a telescopic function, when different angles of the cover body 22 need to be set, the raising angle θ can be controlled by adjusting the length of the telescopic linkage 32173, thereby realizing different extension lengths of the film 101 and achieving flexible adjustment of the ratio of film length to paperboard length in the paperboard-film lamination apparatus 100. For example, when the raising angle of the cover body 22 needs to be increased, the length of the telescopic linkage 32173 may be increased. When the raising angle of the cover body 22 needs to be shortened, the length of the telescopic linkage 32173 may be shortened.

In some embodiments, the telescopic link 32173 is controlled to extend or shorten by a bolt. When the bolt is locked, the length of the telescopic linkage 32173 is not adjustable; when the bolt is loosened, the length of the telescopic linkage 32173 can be freely adjusted. The length of the telescopic linkage 32173 may be locked and adjusted by setting the bolt.

It should be noted that the main function of the telescopic linkage 32173 is to adjust the raising angle of the cover body 22 by extending and shortening, therefore, any structure that can achieve the above function can be called the telescopic linkage 32173 referred to in this embodiment.

Having thus described the basic concepts, it may be rather apparent to those skilled in the art after reading this detailed disclosure that the foregoing detailed disclosure is intended to be presented by way of example only and is not limiting. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and amendments to the present disclosure. These alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.

Moreover, certain terminology has been used to describe embodiments of the present disclosure. For example, the terms “one embodiment, ” “an embodiment, ” and/or “some embodiments” mean that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to “an embodiment” or “one embodiment” or “an alternative embodiment” in various portions of this specification are not necessarily all referring to the same embodiment. In addition, some features, structures, or features in the present disclosure of one or more embodiments may be appropriately combined.

In addition, those skilled in the art can understand that various aspects of the present disclosure can be illustrated and described through several patentable categories or situations, including any new and useful processes, machines, products, or combinations of materials, or any new and useful improvements. Accordingly, all aspects of the present disclosure may be performed entirely by hardware, may be performed entirely by software (including firmware, resident software, microcode, etc. ) , or may be performed by a combination of hardware and software. The above hardware or software can be referred to as "data block" , "module" , "engine" , "unit" , "component" or "system" . In addition, aspects of the present disclosure may appear as a computer product located in one or more computer-readable media, the product including computer-readable program code.

The computer storage medium may include a propagation data signal containing a computer program encoding, such as on a baseband or as part of a carrier. The propagation signal may have a variety of expressions, including electromagnetic form, optical form, or suitable combination form. The computer storage medium can be any computer readable medium other than the computer readable storage medium, which can be used to perform system, devices, or devices to implement communication, propagating, or devices by connecting to an instruction. Program encoding on a computer storage medium can be propagated by any suitable medium, including radio, cables, fiber optic cables, RF, or similar media, or any of the above media.

Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB. NET, Python or the like, conventional procedural programming languages, such as the program encoding may be run over the user's computer, or as a stand-alone package runs on the user's computer, or part is running on the user's computer, or running on a remote computer or processing device. In the latter case, the remote computer can be connected to the user's computer through any network, such as a local area network (LAN) or a wide area network (WAN) , or connected to an external computer (e.g., via the Internet) , or in a cloud computing environment, or as a service Use as software as a service (SaaS) .

Furthermore, the recited order of processing elements or sequences, or the use of numbers, letters, or other designations thereof, are not intended to limit the claimed processes and methods to any order except as may be specified in the claims. Although the above disclosure discusses through various examples what is currently considered to be a variety of useful embodiments of the disclosure, it is to be understood that such detail is solely for that purpose, and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover modifications and equivalent arrangements that are within the spirit and scope of the disclosed embodiments. For example, although the implementation of various components described above may be embodied in a hardware device, it may also be implemented as a software only solution, e.g., an installation on an existing server or mobile device.

Similarly, it should be appreciated that in the foregoing description of embodiments of the present disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the various embodiments. However, this disclosure does not mean that the present disclosure object requires more features than the features mentioned in the claims. Rather, claimed subject matter may lie in less than all features of a single foregoing disclosed embodiment.

In some embodiments, the numbers expressing quantities, properties, and so forth, used to describe and claim certain embodiments of the application are to be understood as being modified in some instances by the term “about, ” “approximate, ” or “substantially. ” For example, “about, ” “approximate, ” or “substantially” may indicate ±20%variation of the value it describes, unless otherwise stated. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the count of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the present disclosure are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.

Each patent, patent application, patent application publication and other materials cited herein, such as articles, books, instructions, publications, documents, etc., are hereby incorporated by reference in their entirety. In addition to the application history documents that are inconsistent or conflicting with the contents of the present disclosure, the documents that may limit the widest range of the claim of the present disclosure (currently or later attached to this application) are excluded from the present disclosure. It should be noted that if the description, definition, and/or terms used in the appended application of the present disclosure is inconsistent or conflicting with the content described in the present disclosure, the use of the description, definition and/or terms of the present disclosure shall prevail.

At last, it should be understood that the embodiments described in the present disclosure are merely illustrative of the principles of the embodiments of the present disclosure. Other modifications that may be employed may be within the scope of the present disclosure. Thus, by way of example, but not of limitation, alternative configurations of the embodiments of the present disclosure may be utilized in accordance with the teachings herein. Accordingly, embodiments of the present disclosure are not limited to that precisely as shown and described.

Claims

An apparatus for paperboard-film lamination, comprising:

a roller used to convey a film in a rolling motion; and

an ejector device used to eject the film on the roller along a direction away from an outer wall surface of the roller.
The apparatus of claim 1, wherein the apparatus further includes a driving device connected to the ejector device, the driving device used to drive at least a part of the ejector device to protrude from, be parallel to, or depress from the outer wall surface of the roller.
The apparatus of claim 2, wherein

when the driving device drives at least a part of the ejector device to protrude from the outer wall surface of the roller, a ratio of a length of the film to a length of the paperboard is greater than 1; and

when the driving device drives at least a part of the ejector device to be parallel to the outer wall surface of the roller or to depress from the outer wall surface of the roller, the ratio of the length of the film to the length of the paperboard is equal to 1.
The apparatus of claim 2, wherein the outer wall surface of the roller is provided with an opening, wherein

the opening is connected to an interior of the roller and extends along an axis direction of the roller; and

the ejector device is mounted at the opening and is capable of protruding from, parallel to, or depressing from the outer wall surface of the roller through the opening under a driving of the driving device.
The apparatus of claim 4, wherein at least a part of the ejector device is capable of moving along a radial direction of the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller through the opening.
The apparatus of claim 5, wherein the ejector device includes:

a cover body mounted at the opening; and

a first connection assembly, a first end of the first connection assembly being connected to the driving device and a second end of the first connection assembly being connected to the cover body, wherein the driving device drives at least a part of the cover body through the first connection assembly to move along the radial direction of the roller to protrude from, be parallel to, or depress from the outer wall surface of the roller.
The apparatus of claim 6, wherein

the driving device includes a driving unit and a transmission unit; and

the transmission unit is provided with a slot, wherein the first end of the first connection assembly is limited within the slot and moves within the slot under a driving of the driving unit so that the second end of the first connection assembly drives at least a part of the cover body to protrude from, be parallel to, or depress from the outer wall surface of the roller.
The apparatus of claim 4, wherein at least a part of the ejector device is capable of rotating relative to the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller through the opening.
The apparatus of claim 8, wherein the ejector device includes:

a cover body mounted at the opening, wherein at least a part of the cover body is capable of rotating relative to the roller under the driving of the driving device to protrude from, be parallel to, or depress from the outer wall surface of the roller.
The apparatus of claim 9, wherein

the driving device includes a driving unit and a transmission unit; and

the transmission unit includes a second connection assembly, wherein a first end of the second connection assembly moves under the driving of the driving unit so that a second end of the second connection assembly drives at least a part of the cover body to protrude from, be parallel to, or depress from the outer wall surface of the roller.
The apparatus of claim 10, wherein the second end of the second connection assembly is connected to the cover body by a connection rod and a connection shaft, the connection rod being a telescopic rod.
The apparatus of claim 2, wherein the apparatus further includes an adsorption member, the adsorption member adsorbing the film on the outer wall surface of the ejector device and an outer wall surface of the roller through a first hole on the ejector device and a second hole on the roller.
The apparatus of claim 12, wherein the apparatus further includes a cover slice, the cover slice being located within the roller and used to change an opening/closing state of the first hole and/or the second hole.
The apparatus of claim 13, wherein

the driving unit includes a driving unit and a transmission unit; and

the transmission unit is provided with a slot, wherein a first end of the cover slice is limited within the slot and moves within the slot under a driving of the driving unit so that a second end of the cover slice moves along the radial direction of the roller.
The apparatus of claim 14, wherein the transmission unit includes a first moving assembly connected to the cover slice, the first moving assembly driving the cover slice to move along a central axis direction of the roller under the driving of the driving unit.
The apparatus of claim 15, wherein the first moving assembly includes a telescopic assembly with a telescopic direction parallel to the central axis direction of the roller.
The apparatus of claim 14, wherein the transmission unit includes a second moving assembly connected to the cover slice, the second moving assembly driving the cover slice to move along a circumferential direction of the roller under the driving of the driving unit.
The apparatus of claim 17, wherein the second moving assembly includes a collar provided within the roller, the collar being capable of rotating along the central axis direction of the roller, wherein the cover slice is connected to an outer wall of the collar.
The apparatus of claim 2, wherein the apparatus further includes:

an adsorption member, the adsorption member adsorbing the film on the outer wall surface of the ejector device and an outer wall surface of the roller through a first hole on the ejector device and a second hole on the roller; and

a release member, the release member disconnecting the film from the outer wall surface of the ejector device and the outer wall surface of the roller through the first hole and the second hole.
The apparatus of claim 2, wherein the apparatus further includes an adjusting device connected to the ejector device, the adjusting device being used to adjust a height of the ejector device protruding from the outer wall surface of the roller.
The apparatus of claim 20, wherein the adjusting device includes a first guiding structure and a power source, wherein

the first guiding structure is connected to the driving device and extends along a radial direction of the roller, the ejector device is movably connected to the first guiding structure, the driving device drives the first guiding structure to move along an extension direction of the first guiding structure;

the power source is connected to the ejector device and drives the ejector device along the extension direction of the first guiding structure.
The apparatus of claim 20, wherein the adjusting device includes a second guiding structure and a locking member, wherein

the second guiding structure is connected to the driving device and extends along the radial direction of the roller;

the second guiding structure includes a plurality of adjusting positions arranged at intervals along the extension direction of the second guiding structure;

the ejector device selectively fits into at least one of the adjusting positions; and

the locking member is used to lock the fitted adjusted ejector device 20 to the second guiding structure.