CN111974896B - Basic cover stamping die and basic cover - Google Patents
Basic cover stamping die and basic cover Download PDFInfo
- Publication number
- CN111974896B CN111974896B CN202010928930.9A CN202010928930A CN111974896B CN 111974896 B CN111974896 B CN 111974896B CN 202010928930 A CN202010928930 A CN 202010928930A CN 111974896 B CN111974896 B CN 111974896B
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- Prior art keywords
- air cushion
- lower die
- cover
- die
- basic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D51/44—Making closures, e.g. caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
本发明公开了一种基本盖冲压模具及基本盖。所述基本盖冲压模具包括上下相对设置的上模和下模，所述上模包括均同轴设置上成型环、上卸盖气垫和上模芯，所述下模包括同轴设置的成型压料气垫、下模芯，所述上成型环和所述成型压料气垫配合冲压出基本盖的外圆周面，所述上卸盖气垫、上模芯和下模芯配合冲压出基本盖的内圆周面，所述外圆周面位于内圆周面的外侧且两者形成外低内高的台阶面。本发明成型后的基本盖，是以产品面在上，公共面在下面的形式，从而实现毛刺边在内侧的设计，避免在基本盖叠盖时会刮伤下面的基本盖盖面的问题。
The present invention discloses a basic cover stamping die and a basic cover. The basic cover stamping die comprises an upper die and a lower die arranged relatively to each other from top to bottom, the upper die comprises an upper forming ring, an upper cover removal air cushion and an upper die core which are all coaxially arranged, the lower die comprises a forming press air cushion and a lower die core which are coaxially arranged, the upper forming ring and the forming press air cushion cooperate to stamp out the outer circumferential surface of the basic cover, the upper cover removal air cushion, the upper die core and the lower die core cooperate to stamp out the inner circumferential surface of the basic cover, the outer circumferential surface is located on the outer side of the inner circumferential surface and the two form a stepped surface which is lower on the outside and higher on the inside. The basic cover after being formed by the present invention is in the form of a product surface on the top and a common surface on the bottom, so as to realize the design of the burr edge on the inside, and avoid the problem of scratching the cover surface of the basic cover below when the basic covers are overlapped.
Description
Technical Field
The invention belongs to the technical field of basic cover processing, and particularly relates to a basic cover stamping die and a basic cover.
Background
Along with the social development and the improvement of the living standard of people, the requirements of people on the convenience and the storage endurance of foods are higher and higher, canned foods are widely popular because of easy portability and storage, and the foods need to be sealed by rolling a pop-top cover and a pop-top can after canning, wherein the quality of the final product is directly determined by the quality of the pop-top cover.
In the process of manufacturing the easy-to-open cover, the first step is to punch the metal material into individual basic covers by a basic cover punch press, wherein the basic covers are commonly called as light covers, and refer to cover bodies which are formed in whole appearance but are not scored and riveted with pull rings. As shown in fig. 1 and 6, the burr edge of the basic cover produced by the conventional basic cover stamping die is formed in a mode that the common surface is on the upper surface and the product surface is on the lower surface, and when the basic covers formed by the die structure are stacked together during conveying and packing, the burr edge of the upper basic cover easily scratches the lower basic cover surface, so that the cover surface is scratched, further cover surface corrosion and rust are caused.
How to provide a basic cover stamping die to avoid scratching the underlying basic cover surface when the basic covers are overlapped is an urgent problem to be solved.
Disclosure of Invention
The invention mainly aims to provide a basic cover stamping die, so that the defects of the prior art are overcome.
It is a further object of the present invention to provide a base cover.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention comprises the following steps: a basic cover stamping die comprises an upper die and a lower die which are arranged up and down oppositely,
The upper die comprises an upper die seat, an upper die core fixing seat, an upper forming ring, an upper cover unloading air cushion, an upper cutter and an upper die core which are coaxially arranged, wherein the upper die core fixing seat is fixed in the upper die seat, the upper forming ring is fixed between the upper die seat and the upper die core fixing seat, the upper cover unloading air cushion is embedded between the upper forming ring and the upper die core fixing seat, the upper cutter is fixed on the lower opening edge of the upper die seat, and an upper cutting edge is arranged on the outer edge of the bottom end of the upper cutter; the upper mold core is fixed on the lower end face of the upper mold core fixing seat and is positioned in the upper cover unloading air cushion;
The lower die comprises a lower die seat, a lower die seat cushion plate, a piston ring, a forming material pressing air cushion, a lower die core fixing seat, a lower die core, a lower material pressing air cushion, an upper material pressing air cushion and a lower cutter which are all coaxially arranged, wherein the lower die seat cushion plate is fixed below the lower die seat and is coaxial with the lower die seat, the piston ring is fixed in the lower die seat cushion plate and is coaxial with the lower die seat cushion plate, the forming material pressing air cushion is embedded between the piston ring and the lower die core fixing seat, the lower die core fixing seat is fixed in the lower die seat cushion plate and is positioned in the forming material pressing air cushion, the lower material pressing air cushion is embedded between the lower die seat cushion plate and the piston ring, the upper material pressing air cushion is positioned above the lower material pressing air cushion and is embedded between the lower die seat and the piston ring, the lower cutter is fixed on the upper opening edge of the lower die seat, and the inner edge of the top end of the lower cutter is provided with a lower cutting edge matched with the upper cutting edge;
the upper forming ring and the forming material pressing air cushion are matched and punched to form the outer circumferential surface of the basic cover, the upper cover unloading air cushion, the upper mold core and the lower mold core are matched and punched to form the inner circumferential surface of the basic cover, and the outer circumferential surface is positioned on the outer side of the inner circumferential surface and forms a step surface with low outer side and high inner side.
In a preferred embodiment, a running clearance is arranged between the top end surface of the upper mold core and the inner side end surface of the upper cover unloading air cushion.
In a preferred embodiment, a first air chamber for supporting the molding press air cushion is formed between the piston ring and the lower mold core fixing seat in a sealing manner below the molding press air cushion.
In a preferred embodiment, a second air chamber for supporting the lower pressing air cushion is formed between the lower die seat cushion plate and the piston ring in a sealing way below the lower pressing air cushion.
In a preferred embodiment, a third air chamber for supporting the upper pressing air cushion is formed between the lower die holder and the piston ring in a sealing way under the upper pressing air cushion.
In a preferred embodiment, a fourth air chamber for supporting the upper cover-unloading air cushion is formed between the upper forming ring and the upper mold core fixing seat in a sealing way above the upper cover-unloading air cushion.
In a preferred embodiment, the bottom end surface of the upper cutter is a step surface with higher outside and lower inside, and the outer edge of the top end surface of the upper pressing air cushion is provided with an inclined surface matched with the step surface.
In a preferred embodiment, the top end surface of the molding press air cushion and the bottom end surface of the upper molding ring are provided with contour structures which are matched with the contour of the basic cover.
In a preferred embodiment, the upper die holder is fixed on a slide block of the punch press, the lower die holder is fixed on a table top of the punch press, and the slide block is a single slide block.
The embodiment of the invention provides a basic cover, which is stamped by adopting the basic cover stamping die, and comprises an outer circumferential surface and an inner circumferential surface, the outer circumferential surface is positioned outside the inner circumferential surface, and the outer circumferential surface and the inner circumferential surface form a step surface with low outer side and high inner side.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention realizes the reverse molding of the basic cover, namely, after the basic cover is molded, the basic cover is in a form of a product surface on the upper side and a public surface on the lower side, thereby realizing the design of the burr edge on the inner side, and avoiding the problem that the lower basic cover surface is scratched when the basic cover is overlapped.
2. The material pressing air cushion below the upper cutter of the die is designed into a two-layer structure, namely an upper material pressing air cushion and a lower material pressing air cushion, so that the requirement that the pressing force cannot be excessive after blanking materials is finished at first is met; and the requirement that the final molding of the outer side of the cover needs larger lateral force in the latter half of the molding so as to ensure the dimensional stability of the cover and the pressing force needs larger is met.
3. The upper cover-unloading air cushion is additionally arranged between the upper forming ring and the upper mold core of the mold, and is used for separating the basic cover from the upper mold, so that the cover can be conveniently blown out of the mold under the action of lateral cover-discharging air pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a partial view of a prior art overlapping of a base cover with a burr on the outside;
Fig. 2 is a cross-sectional view of a basic cap press mold (at bottom dead center) of the present invention;
fig. 3 is a cross-sectional view of a basic cap press die (when blanking a material) of the present invention;
FIG. 4 is a cross-sectional view of the basic cover stamping die of the present invention (with the upper nip air-cushion beginning to contact the lower nip air-cushion);
FIG. 5 is a partial view of the overlapping of the basic cover with the burr side on the inside of the invention;
FIG. 6 is an enlarged schematic view of the encircled portion of FIG. 1;
fig. 7 is an enlarged schematic view of the circled portion of fig. 5.
Reference numerals:
10. Basic cover stamping die 100, lower die 101, lower die holder 102, lower die holder backing plate 103, piston ring 104, shaping press air cushion 105, lower die core fixing seat 106, lower die core 107, lower press air cushion 108, upper press air cushion 109, lower knife 110, first air chamber 111, second air chamber 112, inclined plane 113, third air chamber 200, upper die 201, upper die holder 202, upper die core fixing seat 203, upper shaping ring 204, upper cover unloading air cushion 205, upper knife 206, upper die core 207, fourth air chamber 208, running gap 209, step 20, basic cover 21, outer circumference, 22, inner circumference 23, burr edge.
Detailed Description
The invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed embodiment.
As shown in fig. 7, the basic cover stamping die 10 and the basic cover 20 disclosed by the invention realize the design of the inner side of the burr edge 23 of the basic cover through the reverse molding design of the die, thereby avoiding the problem that the lower basic cover surface is scratched when the basic cover is overlapped, and being suitable for occasions requiring the inner side of the burr edge 23 of the basic cover.
Referring to fig. 2 to 5, a basic cover stamping die 10 disclosed in the present application includes a lower die 100 and an upper die 200 which are disposed opposite to each other, the upper die 200 and the lower die 100 cooperate to form a basic cover 20, and the product surface is on the upper side and the common surface is on the lower side, so as to realize the design of the burr edge 23 on the inner side. Wherein, after the basic cover is sealed with the pot (not shown), the surface contacting with the outside environment is the common surface, the surface contacting with the food in the pot is the product surface, namely the product surface and the common surface refer to the front and the back surface of the basic cover. After the molding of the existing basic cover mold is finished, the common surface of the basic cover is different from the upper surface and the lower surface of the product; the formed cover of the application is turned out, namely the common surface is down, and the product surface is up.
The lower die 100 mainly comprises a lower die holder 101, a lower die holder pad 102, a piston ring 103, a forming and pressing air cushion 104, a lower die core fixing seat 105, a lower die core 106, a lower pressing air cushion 107, an upper pressing air cushion 108 and a lower cutter 109 which are coaxially arranged. Wherein the lower die holder 101 is an annular body; the lower die holder base plate 102 is a ring-shaped piece provided with a ring groove, is fixed below the lower die holder 101, and is coaxially fixed with the lower die holder 101 through a positioning pin; the piston ring 103 is an annular body, and is fixed in the annular groove of the lower die holder base plate 102 and concentric with the annular groove; the lower mold core fixing seat 105 is an annular piece, and is fixed in the middle of the lower mold base plate 102 and concentric with the lower mold base plate; the molding press air cushion 104 is an annular body, the annular body is annularly embedded between the piston ring 103 and the lower mold core fixing seat 105, the top end face of the molding press air cushion 104 is provided with a shape which is matched with the outline of the basic cover 20, a first air chamber 110 is formed between the piston ring 103 and the lower mold core fixing seat 105 in a sealing manner below the molding press air cushion 104, and the molding press air cushion 104 is supported by the air pressure of the first air chamber 110; the lower mold core 106 is a ring-shaped piece, is fixed in the middle of the lower mold core fixing seat 105 and is coaxial with the lower mold core fixing seat, and is embedded in the forming material pressing air cushion 104; the lower pressing air cushion 107 is an annular body, the annular body is annularly embedded between the lower die seat cushion plate 102 and the piston ring 103, a second air chamber 111 is formed between the lower die seat cushion plate 102 and the piston ring 103 under the lower pressing air cushion 107 in a sealing manner, and the lower pressing air cushion 107 is supported by the air pressure of the second air chamber 111; the upper material pressing air cushion 108 is an annular body, is annularly embedded between the lower die holder 101 and the piston ring 103 and is positioned above the lower material pressing air cushion 107, and a circle of annular inclined surface is arranged on the outer edge of the top end surface of the upper material pressing air cushion 108, so that the top end surface of the upper material pressing air cushion 108 is in an outer inclined and inner flat shape on the section; a third air chamber 112 is formed between the lower die holder 101 and the piston ring 103 under the upper material pressing air cushion 108 in a sealing way, and the upper material pressing air cushion 108 is supported by the air pressure of the third air chamber 113; the lower knife 109 is an annular body, which is fixed on the upper opening edge of the lower die holder 101, and the inner edge of the top of the lower knife is provided with a lower knife edge (not shown).
The upper die 200 comprises an upper die holder 201, an upper die core fixing seat 202, an upper forming ring 203, an upper cover unloading air cushion 204, an upper cutter 205 and an upper die core 206 which are coaxially arranged, wherein the upper die holder 201 is a concave annular part, and the upper die core fixing seat 202 is a annular part which is fixed in the middle of the upper die holder 201 and is coaxial with the upper die holder 201; the upper forming ring 203 is an annular body, is fixedly arranged in the upper die holder 201 and is coaxial with the upper die holder 201, and is provided with an annular shape on the bottom end face of the upper forming ring 203, wherein the shape is matched with the outline of the basic cover 20 and corresponds to the shape of the top end face of the forming material pressing air cushion 104; the upper cover-unloading air cushion 204 is an annular body, the annular body is embedded between the upper forming ring 203 and the upper mold core fixing seat 202, a fourth air chamber 207 is formed between the upper forming ring 203 and the upper mold core fixing seat 202 in a sealing way above the upper cover-unloading air cushion 204, the air pressure of the fourth air chamber 207 is used for pressing against the upper cover-unloading air cushion 204, and an operation gap 208 is arranged between the top end face of the upper mold core 206 and the inner side end face of the upper cover-unloading air cushion 204; the upper knife 205 is an annular body, and is fixed on the lower opening edge of the upper die holder 201, and the bottom end surface of the upper knife 205 is a step with a high outside and a low inside in cross section, and is opposite to the annular inclined surface 112 of the top end surface of the upper pressing air cushion 108, an upper blade (not shown) matched with the lower blade is arranged on the bottom outer edge of the upper knife 205, and the upper die core 206 is fixed on the lower end surface of the upper die core fixing seat 202 and is positioned in the upper cover unloading air cushion 204.
The working principle of the basic cover stamping die 10 of the invention is specifically as follows:
the upper die holder 201 of the upper die 200 is fixed to a slide block (not shown) of a punch press, and the lower die holder 101 of the lower die 100 is fixed to a table top (not shown) of the punch press.
In the punching, a metal material (not shown) is placed on the top surface of the lower die 100, and when the upper die 200 and the lower die 100 are closed by the punch slider, a circular blank is punched on the metal material by the cooperation of the upper edge of the upper blade 205 and the lower edge of the lower blade 109.
Then, as the punch slide descends, the lower knife 109 starts to push the upper pressing air cushion 108 downwards, at this time, the upper pressing air cushion 108 is not contacted with the lower pressing air cushion 107, and the upper forming ring 203 and the forming pressing air cushion 104 clamp the periphery of the blank for one circle;
The upper die 200 continues to move downwards, the upper cutter 205 continues to push the upper material pressing air cushion 108 downwards, the upper material pressing air cushion 108 is contacted and propped by the lower material pressing air cushion 107 below, the upper material pressing air cushion 108 is not moved downwards under the double air pressure support of the second air chamber 111 and the third air chamber 113 after propping, the step 209 on the inner side of the bottom end surface of the upper cutter 205 starts to extend into the outer inclined surface 112 of the top end surface of the upper material pressing air cushion 108, the forming material pressing air cushion 104 continuously moves downwards under the pushing pressure of the upper forming ring 203 and gradually forms the outer side shape of the basic cover 20, meanwhile, the upper material discharging air cushion 204 and the lower die core 106 also start to clamp the next periphery on the blank, and along with the descending of the upper die 200, the upper material pressing air cushion 104 continuously moves upwards relative to the upper die 200; with the continued downward movement of the upper mold 200, the upper mold core 206 and the lower mold core 106 come into contact, the intermediate shape of the basic cap 20 starts to be molded, and the cap molding ends by the time the punch slide moves to the bottom dead center.
The punch slide starts to move upward, the upper cover-unloading air cushion 204 does not move upward initially, and presses the basic cover 20 together with the lower mold core 106, the upper forming ring 203 and the upper mold core 206 start to move upward and separate from the contact of the basic cover 20, and after the upper mold core 206 moves upward until the top end surface starts to contact the inner end surface of the upper cover-unloading air cushion 204, the upper cover-unloading air cushion 204 starts to move upward, and the basic cover 20 is separated from the contact of the upper mold core 206 and the upper forming ring 203, namely, the cover-unloading process, so that the cover can be blown out of the mold 10 under the action of lateral cover-discharging air pressure.
The basic cover stamping die 10 of the present invention has the following advantages: 1. the reverse molding can be realized on a single-slide block punch press, wherein the reverse molding refers to the mode that after the cover is molded, the product surface is on the upper side and the common surface is on the lower side, so that the purpose of the burr edge 23 on the inner side is realized; the single-slide punch means that the punch has only one upper slide, and the upper die 200 of the die is fixed on the only upper slide, so that the structure is simple and the implementation is easy compared with the double-slide punch and the multi-slide punch. 2. The material pressing air cushion below the upper cutter 205 of the die structure is of a two-layer structure, namely the upper material pressing air cushion 108 and the lower material pressing air cushion 107, so that the requirement that the pressing force cannot be excessive after the material is blanked is realized, and only the upper material pressing air cushion 108 is propped against the upper cutter 205 at the stage, namely only the air pressure of the third air chamber 113 supports the upper material pressing air cushion 108; and the final molding of the outer side of the cover needs larger lateral force to ensure that the cover is stable in size and the pressing force needs larger requirement, at the stage, the upper pressing air cushion 108 descends to contact with the lower pressing air cushion 107 and is propped by the lower pressing air cushion 107, namely, the air pressure of the third air chamber 113 directly supports the upper pressing air cushion 108, and meanwhile, the air pressure of the second air chamber 111 supports the lower pressing air cushion 107 and props against the upper pressing air cushion 108 through the lower pressing air cushion 107. 3. An upper cover-removing air cushion 204 is added between the upper molding ring 203 and the upper mold core 206 for removing the basic cover 20 from the upper mold 200, so that the cover can be blown out of the mold under the action of lateral cover-discharging air pressure.
The basic cover 20 disclosed by the invention is stamped by adopting the basic cover stamping die 10, and specifically comprises an outer circumferential surface 21 and an inner circumferential surface 22, wherein the outer circumferential surface 21 is positioned outside the inner circumferential surface 22, and the outer circumferential surface 21 and the inner circumferential surface form a step surface with low outside and high inside.
The various aspects, embodiments, features and examples of the invention are to be considered in all respects as illustrative and not intended to limit the invention, the scope of which is defined solely by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.
The use of headings and chapters in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the present invention.
Unless specifically stated otherwise, the use of the terms "comprising (include, includes, including)", "having (has, has or has)" should generally be understood to be open-ended and not limiting.
While the invention has been described with reference to an illustrative embodiment, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010928930.9A CN111974896B (en) | 2020-09-07 | 2020-09-07 | Basic cover stamping die and basic cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928930.9A CN111974896B (en) | 2020-09-07 | 2020-09-07 | Basic cover stamping die and basic cover |
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| Publication Number | Publication Date |
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| CN111974896A CN111974896A (en) | 2020-11-24 |
| CN111974896B true CN111974896B (en) | 2024-11-15 |
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| CN202010928930.9A Active CN111974896B (en) | 2020-09-07 | 2020-09-07 | Basic cover stamping die and basic cover |
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| CN112275941B (en) * | 2020-10-21 | 2025-08-26 | 苏州斯莱克精密设备股份有限公司 | A pressure-resistant easy-open lid basic cover stamping die |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212264369U (en) * | 2020-09-07 | 2021-01-01 | 苏州斯莱克精密设备股份有限公司 | Basic cover stamping die and basic cover |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309749A (en) * | 1993-05-03 | 1994-05-10 | Stodd Ralph P | Method and apparatus for forming a can shell |
| US8141406B2 (en) * | 2008-10-09 | 2012-03-27 | Container Development, Ltd. | Method and apparatus for forming a can shell |
| US9352379B2 (en) * | 2009-04-07 | 2016-05-31 | Rexam Beverage Can Company | Tooling pod for double action can end press |
| US8573020B2 (en) * | 2010-09-20 | 2013-11-05 | Container Development, Ltd. | Method and apparatus for forming a can shell |
| CN202239262U (en) * | 2011-09-22 | 2012-05-30 | 苏州斯莱克精密设备股份有限公司 | Easy Open End Basic Cap Stamping Die |
| CN104607540B (en) * | 2014-12-29 | 2017-04-19 | 义乌市易开盖实业公司 | Can cap multi-level composite air pressure reverse mold and forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212264369U (en) * | 2020-09-07 | 2021-01-01 | 苏州斯莱克精密设备股份有限公司 | Basic cover stamping die and basic cover |
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