HK1046396B

HK1046396B - Columnar container and apparatus and method for manufacturing the same

Info

Publication number: HK1046396B
Application number: HK02108025.0A
Authority: HK
Inventors: 东仪俊秀; 東儀俊秀; 猪又畅之; 五十岚诚; 猪又暢之; 佐田淳; 大隅理奈子; 五十嵐誠
Original assignee: 凸版印刷株式会社
Priority date: 2000-09-29
Filing date: 2002-11-05
Publication date: 2006-05-26
Also published as: KR20020025745A; TWI240670B; JP4103353B2; JP2002172717A; HK1046396A1; CN1221438C; CN1347829A; KR100777945B1

Abstract

PURPOSE: A device and method for making a cylinder-type container and a cylinder-type container are provided to make a cylinder-type container from a cylinder folded flat at two opposite folded marks and to make a cylinder-type container with inexpensive and simplified equipment. CONSTITUTION: A device for making a cylinder-type container having a flat state and cubic state is equipped with a device for forming a container making a flat cylinder into a cubic cylinder, a first packing device packing an open end of the cubic container, and a second packing device packing the other open end of the cubic container. A blank sheet(A) is prepared. In the blank sheet, side plates(1,2) and a fitting plate(3) are connected through opposite folded marks(a, b). A flat container is formed through enveloping and the container is inflated by approaching the opposite folded marks. Hereby, a cubic container is formed.

Description

Cylindrical container manufacturing device, cylindrical container manufacturing method, and cylindrical container

Technical Field

The present invention relates to a manufacturing apparatus for a cylindrical container such as a paper tube container, and more particularly to a manufacturing apparatus and a manufacturing method for manufacturing a cylindrical container from a tube folded flat at 2 opposite folds. The present invention also relates to a cylindrical container manufactured by the manufacturing apparatus and the manufacturing method.

Background

Conventionally, there have been known a cylindrical container such as a paper cup having a substantially rectangular shape for use in vending machines such as coffee, a cylindrical paper container for packaging foods such as potato chips and tools such as tennis balls.

Next, a conventional process for manufacturing a cylindrical paper tube container will be described. The paper roll is first placed on a cylindrical mandrel. Then, an adhesive layer is provided on the overlapped portion of the rolled paper, and the paper is adhered by pressing to form a hollow cylinder. The pressure may be applied with or without heating.

Next, a bottom plate for closing the opening of the cylinder is formed. The bottom plate is formed by: paper slightly larger than the opening is prepared and formed into a concave shape by a metal mold. The formed bottom plate is inserted into one opening of the cylinder. Then, the inner peripheral surface of the cylinder is engaged with the bottom plate.

Then, after a predetermined content is filled from the other opening of the tube, a cover plate similar to the bottom plate is fitted into the opening and joined.

However, in the above conventional manufacturing method, a cylindrical mandrel is required to form the paper into a hollow cylindrical shape. In addition, in order to increase the speed of manufacturing the cylindrical container, a machine in which a plurality of spindles are radially provided outside the rotating body is required. Therefore, the manufacturing apparatus for the cylindrical container is complicated and expensive. Further, when the paper is formed into a polygonal hollow cylinder such as a square or hexagon, the paper is pressed against the mandrel, that is, the inside of the hollow cylinder is pressed against the mandrel, and the formation is difficult.

The invention aims to provide a manufacturing device and a manufacturing method for manufacturing a cylindrical container from a cylinder which is folded into a flat shape by 2 opposite folds. Further, the present invention aims to provide a cylindrical container manufactured by the manufacturing apparatus and the manufacturing method.

Disclosure of the invention

The present invention provides an apparatus for manufacturing a cylindrical container F formed of a flat and three-dimensional cylindrical container, comprising:

a barrel forming mechanism for forming the flat state barrel B into a three-dimensional state barrel C;

a1 st closing mechanism for closing one open end of the three-dimensional cylinder C;

and a2 nd closing mechanism for closing the other opening end of the three-dimensional cylinder C.

The present invention provides an apparatus for manufacturing a cylindrical container F formed of a tube folded into a flat state at 2 opposite folds a and b in a three-dimensional state, comprising: a cartridge forming/holding/conveying mechanism 10, a cartridge supply mechanism 20, a bottom plate fitting mechanism 30, a bottom sealing mechanism 40, a lid plate fitting mechanism 60, a lid sealing mechanism 70, and a container feeding mechanism 80; the tube forming, holding and conveying mechanism 10 has a plurality of tube holding portions 12 and a tube holding portion moving mechanism for moving the plurality of tube holding portions 12, wherein the plurality of tube holding portions 12 are connected to a three-dimensional tube (C) and have inner circumferential surfaces separated into 2 parts; the tube holding portion 12 can be in an open state in which the inner peripheral surfaces are separated and a closed state in which the inner peripheral surfaces are in contact with the three-dimensional tube C; the flat state tube B is formed into a three-dimensional state tube C by the tube holding portion 12 being changed from the open state to the closed state, and the three-dimensional state tube C is transported while being held by the tube holding portion 12 by being moved by the tube holding portion moving mechanism.

The present invention provides an apparatus for manufacturing a cylindrical container F formed of a tube folded into a flat state at 2 opposing folds a, b in a three-dimensional state, comprising: a cartridge supply mechanism 20, a cartridge holding and conveying mechanism 10, a bottom plate fitting mechanism 30, a bottom sealing mechanism 40, a lid plate fitting mechanism 60, a lid sealing mechanism 70, and a container feeding mechanism 80;

a cartridge supply mechanism 20 for supplying the flat state cartridges B one by one;

a cylinder forming, holding and conveying mechanism 10 having a plurality of cylinder holding portions 12 and a cylinder holding portion moving mechanism for moving the plurality of cylinder holding portions 12, wherein the cylinder holding portions 12 are connected to a cylinder (C) in a three-dimensional state and have inner circumferential surfaces separated into 2 parts; the tube holding portion 12 can be in an open state in which the inner peripheral surfaces are separated and a closed state in which the inner peripheral surfaces are in contact with the three-dimensional tube C; when the tube holding portion 12 is in the open state, the flat state tube B is supplied between the inner peripheral surfaces separated into 2 parts by the tube supply mechanism 20, and the supplied flat state tube B is changed from the open state to the closed state by the tube holding portion 12, and 2 of the flat state tube B are brought close to the folds a and B to form a three-dimensional state tube C which is held by the tube holding portion 12 while being moved by the tube holding portion moving mechanism and conveyed;

a bottom plate fitting mechanism 30 for supplying a bottom plate D from one side of the moving path of the cylindrical holding and conveying mechanism 10 and fitting the bottom plate D into one open end of the three-dimensional cylinder C held by the cylinder holding portion 12;

a bottom sealing mechanism 40 for sealing the bottom plate D and the inner surface of the opening end part in which the bottom plate D is inserted;

a cover plate fitting mechanism 60 for supplying a cover plate E from the other side of the moving path of the cylindrical holding and conveying mechanism 10 and fitting the cover plate E into the other open end of the three-dimensional cylinder C held by the cylinder holding portion 12;

a lid sealing mechanism 70 for sealing the lid plate E by joining the lid plate E to the inner surface of the opening end into which the lid plate E is fitted;

the container feeding mechanism 80 feeds the cylindrical container F with the cap E sealed thereto from the cylinder holding portion 12.

The apparatus for manufacturing a cylindrical container according to the present invention is characterized in that the flat state tube B has 2 side plates facing each other, and the apparatus further includes a tension mechanism for outwardly tensioning the 2 side plates to separate the 2 side plates from each other.

In the manufacturing apparatus of the cylindrical container according to the present invention, the side surface of the three-dimensional cylinder C is formed by a plurality of flat surfaces, at least a part of the inner peripheral surface of the cylinder holding portion 12 is formed by a plurality of flat surfaces, and the flat surface of the inner peripheral surface of the cylinder holding portion 12 is in contact with the side surface of the three-dimensional cylinder C.

The method for manufacturing a cylindrical container according to the present invention comprises a web supply step, a cylindrical forming step, a1 st sealing step, a content filling step, and a2 nd sealing step;

in a paper tube supplying step, supplying paper tube which is flat and becomes a tube shape when being expanded;

in the tube forming process, the tube paper is bulged to form a tube body with 2 openings;

a first closing step of closing one opening of the tube main body;

a content loading step of loading a content into the cartridge main body;

in the 2 nd closing step, the other opening of the tube main body is closed.

In the method for manufacturing a cylindrical container according to the present invention, at least one of the 1 st closing step and the 2 nd closing step includes a closing member attaching step of attaching a closing member to the opening of the cylindrical body and closing the opening.

The method for manufacturing a cylindrical container according to the present invention is characterized in that the closing member attaching step includes a closing member fitting step of fitting a closing member into an opening end portion surrounding the opening of the cylindrical body to close the opening.

In the method for manufacturing a tubular container according to the present invention, at least one of the 1 st closing step and the 2 nd closing step includes a closing member joining step of joining the closing member to the tubular main body after the closing member attaching step.

The method for manufacturing a tubular container according to the present invention is characterized in that the web supplied in the web supply step has corner folds c and 2 opposing folds a and b, and is folded at the 2 opposing folds a and b to be in a flat state, and in the tube forming step, the web is raised to form a tube main body having 2 openings, and in the tube main body, a corner d is formed along the corner fold c.

The method of manufacturing a tubular container according to the present invention is characterized in that the web supplied in the web supply step is folded at 2 folds a and b facing each other to be in a flat state; the above-mentioned tube forming process includes: preparing a mold forming step, a surrounding step, a step of raising a web, and a step of forming a tube main body;

in the step of preparing a forming mold, preparing a forming mold having a mold inner surface surrounding the outer surface of the cylinder body, the forming mold being divided into 2 or more mold parts having forming surfaces, the forming surfaces being combined to form the mold inner surface when the mold parts are combined;

in the enclosing step, the divided mould parts are used for enclosing the 2 opposite folds a and b of the flat state paper and the outer surface;

in the step of raising the web, the divided die portions are formed as die inner surfaces, the die portions are brought close to the web, 2 of the die portions are pressed against 2 opposite folding lines a, b, respectively, and the 2 opposite folding lines a, b of the web are brought close to each other to raise the web;

in the step of forming the tube main body, the die portions are combined to form a die inner surface, and the tube main body having 2 openings is formed so as to surround the paper tube raised by the die inner surface.

The method for manufacturing a tubular container according to the present invention is characterized in that the web supplied in the web supply step is connected by the 2 opposing folds a and b, and has 2 side plates opposing each other; the tube forming step includes a separating step of pulling the 2 side plates outward to separate the 2 side plates.

The invention provides a cylindrical container, characterized in that, the container comprises a cylindrical body 1401 formed by a cylindrical paper, the cylindrical paper is folded at 2 opposite folding lines a and b to be in a flat state, and the 2 opposite folding lines a and b are close to each other to be formed into a cylindrical shape when being bulged; the above-mentioned cartridge body 1401 has 2 openings, and these 2 openings are closed;

further, a closing member D, E is provided to be fitted into each of the 2 openings of the cartridge body 1401.

The present invention is the cylindrical container described in the present invention, wherein the web has the 2 facing folds a, b and the corner fold c, and when the web is formed into a cylindrical shape by being expanded from a flat state and formed into the cylindrical body 1401, the cylindrical body 1401 is formed with the corner d along the corner fold c.

The present invention is a cylindrical container comprising a base 1402 and a lid 1403, wherein the base 1402 and the lid 1403 are connected to each other by weakened portions 1404a and 1404b, and the lid 1403 is openable and closable by separating the base 1402 and the lid 1404a and 1404b from each other, and wherein when the lid 1403 is opened, the inside of the cylindrical container is communicated with the outside.

The cylindrical container according to the present invention further includes a positioning portion 1405 for positioning the lid portion 1403 at the closed position.

Brief description of the drawings

Fig. 1A is a plan view of a semi-finished paperboard for forming a cylinder in a flat state used in a manufacturing apparatus of an embodiment of the present invention.

Fig. 1B is a side view of a flat-state can formed from the blank of fig. 1A.

Fig. 1C is a plan view of the flat tube of fig. 1B being expanded to form a three-dimensional tube.

Fig. 1D is a perspective view of the cartridge in the perspective state of fig. 1C.

FIG. 2 is a side view of a manufacturing apparatus according to an embodiment of the present invention.

FIG. 3 is a plan view of a manufacturing apparatus according to an embodiment of the present invention.

FIG. 4 is a partially enlarged side view of a manufacturing apparatus according to an embodiment of the present invention.

FIGS. 5A, 5B, 6A and 6B are side views for explaining an example of the structure and operation of the cartridge holding section of the manufacturing apparatus according to the embodiment of the present invention.

FIGS. 7A, 7B and 7C are side views for explaining another example of the structure and operation of the tube holding part of the manufacturing apparatus according to the embodiment of the present invention.

FIGS. 8A, 8B and 8C are sectional views for explaining the structure of the cartridge holding section and the structure and operation of the bottom plate fitting mechanism in the manufacturing apparatus according to the embodiment of the present invention.

Fig. 9A, 9B, and 9C are sectional views illustrating an example of the structure of the cartridge holding section and the structure and operation of the lid plate fitting mechanism in the manufacturing apparatus according to the embodiment of the present invention.

FIGS. 10A, 10B, 10C and 10D are sectional views for explaining another example of the structure of the cartridge holding section and the structure and operation of the lid plate fitting mechanism in the manufacturing apparatus according to the embodiment of the present invention.

FIG. 11 is a perspective view of a cylindrical container manufactured by the manufacturing apparatus of the embodiment of the present invention.

Fig. 12A is a plan view of a semi-finished paperboard prepared in the manufacturing method of embodiment 1 of the invention.

Fig. 12B is a view showing a state in which the intermediate board of fig. 12A is bonded at the center to form a flat web.

Fig. 13A, 13B and 13C are sectional views showing a closing member used in the manufacturing method of embodiment 1 of the present invention.

Fig. 14A is a plan view of a semi-finished paperboard prepared in the manufacturing method of embodiment 2 of the invention.

Fig. 14B is a perspective view of a bulged tube body used in the manufacturing method of embodiment 2 of the invention.

Fig. 15A is a perspective view of a cylindrical container according to embodiment 2 of the present invention.

Fig. 15B is a perspective view showing a state where the lid portion and the base portion of the cylindrical container of fig. 15A are separated.

Fig. 16 is a perspective view showing a state where the lid portion of the cylindrical container is separated in the modification of embodiment 2 of the present invention.

Fig. 17A is a perspective view of a cylindrical container according to embodiment 3 of the present invention.

Fig. 17B is a plan view of a blank from which the cylindrical container of fig. 17A is formed.

Fig. 17C is a perspective view showing a state in which the lid portion of the cylindrical container shown in fig. 17A is opened.

Fig. 18 is a perspective view showing a state in which a lid portion of a cylindrical container according to embodiment 4 of the present invention is opened.

Fig. 19 is a perspective view showing a state in which a lid portion of a cylindrical container according to embodiment 5 of the present invention is opened.

FIG. 20A is a side view of a cylindrical container according to embodiment 6 of the present invention.

Fig. 20B is a plan view of the cylindrical container shown in fig. 20A.

Detailed description of the invention

The apparatus for producing a cylindrical container of the present invention will be described in detail with reference to examples.

The manufacturing apparatus of the present invention is used for manufacturing a cylindrical container formed by 2 cylinders in a flat state and a three-dimensional state. The flat-state tube used when the cylindrical container is manufactured by the manufacturing apparatus of the present invention will be described. Fig. 1A is a plan view showing an example of a blank sheet (blank sheet) a for forming a flat-state tube. Fig. 1B is a flat-state tube B formed from the semi-finished paperboard a. The semi-finished cardboard a has side panels 1, 2 and a pasting panel (margin) 3. The side panel 2 is connected to the side panel 1 by a fold a. The adhesive plate 3 is connected to the side plate 2 by a fold b. The flat-state tube B is formed by a pocket pasting method (a method of forming a tube by joining both ends of a single sheet of paper) as shown in fig. 1B. The flat-state tube B used in this apparatus may be formed by, for example, forming a tubular body by plastic extrusion (plastic extrusion) or the like, and folding the tubular body into a flat state, in addition to the above-described pocket pasting method.

The material of the semi-finished cardboard a includes paper used for a sheet of a plate-like paper or a paper cup (paper cup), a synthetic resin layer (film) or an aluminum foil laminated on the paper, a material coated with an inorganic oxide such as silicon oxide, aluminum oxide, or magnesium oxide on the synthetic resin layer (film), a composite material coated with a synthetic resin layer, a plastic film (layer) not using paper, a material laminated with an aluminum foil on the plastic film (layer), a material coated with an inorganic oxide coating, and the like.

As shown in the side sectional view of fig. 1B, the flat tube B is a tube formed by the above-described blank sheet a by the above-described pocket pasting method. The method of formation is described below. At the folds a, b, the side panel 1 and the adhesive panel 3 are folded in the same direction. At this time, the side plate 1 is superposed on the side plate 2, and the end of the side plate 1 is superposed on the adhesive plate 3. The overlapped portion 4 is interposed with a pressure sensitive adhesive such as glue, paste, or adhesive. The overlapped portion 4 is joined and sealed by pressing without heating the overlapped portion 4. The overlapping portion 4 may be interposed with a heat-sensitive adhesive such as a hot-melt adhesive or a hot-melt resin. At this time, the overlapped part 4 is heated and pressurized.

The thus formed flat tube B has side plates 1 and 2 facing each other and folds a and B facing each other. When the flat state cylinder B is formed of paper or by processing paper, the inner side of the flat state cylinder B may be processed to protect the edge of the attachment plate 3 along the attachment plate 3 so that the content does not directly contact the edge of the attachment plate 3. This process is often used in paper containers for holding liquids.

Next, an example in which the flat state tube B is formed into the three-dimensional state tube C by using the manufacturing apparatus of the present invention will be described. First, as shown in fig. 1B, a force is applied from the outside of the flat tube B to swell it. At this time, a force P in the direction of the center line of the flat state tube B (corresponding to the center axis of the three-dimensional state tube C) acts on the opposing fold lines a and B, respectively, and the 2 opposing fold lines a and B are brought close to each other.

Thus, as shown in fig. 1C and 1D, the opposing side plates 1 and 2 are separated from each other to form a semi-cylindrical shape. As a result, the flat state tube B becomes the three-dimensional state tube C. Then, the bottom plate and the cover plate are respectively joined to both open ends of the three-dimensional state cylinder C, and sealed.

When the three-dimensional tube C is formed of a plurality of planes, a flat tube B having opposed creases a and B is also prepared. When the three-dimensional cylinder C has a rectangular column shape, the flat cylinder B is provided with a fold line at a portion forming a corner in the three-dimensional state. When the cross-sectional shape of the three-dimensional tube C is a regular polygon having even number of corners, such as a regular quadrangle, a regular hexagon, or a regular octagon, 2 facing folds are present among the folds facing each other. On the other hand, when the cross-sectional shape of the three-dimensional cylinder C is a regular polygon having odd-numbered angles, such as a regular triangle, a regular pentagon, and a regular heptagon, there are no mutually facing folds among the folds forming the angles. At this time, at least 1 additional crease is provided facing any one of these creases. In order to facilitate the bending of the angular folds and the folds provided separately, the portions of the flat state tube B having these folds are preferably processed.

As shown in fig. 2 to 11, the apparatus for manufacturing a cylindrical container of the present invention includes: a cartridge supply mechanism 20, a cartridge formation holding and conveying mechanism 10, a bottom plate fitting mechanism 30, a bottom sealing mechanism 40, a cover plate fitting mechanism 60, a cover sealing mechanism 70, and a container feeding mechanism 80.

A cartridge supply mechanism 20 that supplies the flat-state cartridges B one by one;

a tube forming, holding and conveying mechanism 10 having a plurality of tube holding portions 12 and a tube holding portion moving mechanism for moving the tube holding portions 12, the tube holding portions 12 forming the flat tube B supplied by the tube supply mechanism 20 into a three-dimensional tube C, and holding the three-dimensional tube C;

a bottom sealing mechanism 40 for sealing the bottom plate D by engaging the bottom plate D with the inner surface of the opening end embedded in the bottom plate D;

a cover plate fitting mechanism 60 for supplying a cover plate from the other side of the movement path of the cylindrical form-holding conveying mechanism 10 and fitting the cover plate into the other opening end of the three-dimensional cylinder C held by the cylinder holding portion 12;

a lid sealing mechanism 70 for sealing the lid plate E by engaging the lid plate E with the inner surface of the opening end portion fitted in the lid plate E;

the container feeding mechanism 80 feeds the sealed cylindrical container with the lid E from the cylindrical holding portion 12.

The cartridge holding portion 12 forms a cartridge forming mechanism. The bottom plate insert means 30 and the bottom seal means 40 form the 1 st closure means. The cover plate embedment mechanism 60 and the cover sealing mechanism 70 form a2 nd closure mechanism.

The manufacturing process of the manufacturing apparatus of the present invention (see fig. 2 to 4) includes: a cylinder supplying step, a cylinder forming step, a bottom plate embedding step, a bottom joining and sealing step, an inner content filling step, a cover plate embedding step, a cover part joining and sealing step and a cylinder container delivering step.

In the tube supply step, the tube holding portion 12 of the tube forming and holding and conveying mechanism 10 is opened, and the flat tubes B are sequentially supplied into the tube holding portion 12.

In the tube forming step, the tube holding portion 12 is closed to form the flat tube B in the three-dimensional state C.

In the bottom plate fitting step C, the bottom plate D is formed into a concave shape and fitted into one open end of the three-dimensional cylinder C.

And a bottom portion joining and sealing step (iv) of joining and sealing the open end portion and the fitted bottom plate (D) to form a bottom portion.

A fifth step of filling the three-dimensional tube C with the contents from the other opening end.

In the cover plate fitting step (C), the cover plate (E) is formed into a concave shape and fitted into the other opening end of the three-dimensional cylinder (C) filled with the content.

In the lid portion joining and sealing step, the other opening end portion of the tube C is joined and sealed to the fitted lid E to form a lid portion, and the lid portion is formed into a cylindrical container containing the content.

In the cylindrical container feeding step (b), the cylindrical container is fed outside the cylinder holding part 12 by opening the cylinder holding part 12.

These manufacturing processes can be variously modified and corrected. For example, the sequence of the bottom plate inserting step (c) and the bottom portion joining and sealing step (c) may be exchanged with the cover plate inserting step (c) and the cover portion joining and sealing step (c). In this case, the arrangement of the bottom plate fitting mechanism 30, the bottom seal mechanism 40, the cover plate fitting mechanism 60, and the cover seal mechanism 70 should be changed according to the change of the process. Further, the fifth and subsequent steps of the content filling step may be omitted. In this case, the content loading mechanism 50, the cover fitting mechanism 60, and the cover sealing mechanism 70 can be omitted from the manufacturing apparatus.

In addition, a heating step and a coating step may be provided between the cylinder forming step and the base plate fitting step. In the heating step, hot air is blown to the opening end of the three-dimensional cylinder C fitted into the bottom plate D. In the coating step, a hot-melt adhesive or the like is applied to the inner peripheral surface of the open end. In this case, the manufacturing apparatus is provided with a heating means and a means for applying a hot-melt adhesive or the like. These steps may be provided between the content filling step (c) and the lid fitting step (c).

The bottom plate D may be fitted, joined, and sealed simultaneously by the bottom plate fitting mechanism 30 used in the bottom plate fitting step (c), and the bottom sealing and joining by the bottom sealing mechanism 40 used in the bottom sealing and joining step (c) may be omitted.

In addition, the cover plate E may be simultaneously fitted, coupled and sealed by the cover plate fitting mechanism 60 used in the cover plate fitting step (c), and the cover portion coupling and sealing by the cover portion sealing mechanism 70 used in the cover portion coupling and sealing step (c) may be omitted.

As shown in fig. 2 and 3, the tubular form-holding-and-conveying mechanism 10 includes a main body frame f, sprockets 10a and 10b pivotally supported on the main body frame f, a chain 11 suspended between the sprockets 10a and 10b, and a plurality of tubular holding portions 12 for holding the tubular bodies C in a three-dimensional state. The sprockets 10a and 10b are driven by an electric motor such as a pulse motor or a servo motor. These tube holding portions 12 are attached to the chain 11 at equal intervals.

The tube holding portion 12 moves along the chain 11 from the sprocket 10a toward the sprocket 10 b. Reaches the tube holding portion 12 of the sprocket 10b, and returns to the sprocket 10 a. As the moving mechanism of the cartridge holder, a device in which a plurality of cartridge holders 12 are radially mounted on the outer side of the rotating body may be used instead of the chain 11. The cartridge holder 12 is mounted on the chain 11 in such a way that: when the three-dimensional tube C is held by the tube holding portion 12, the movement direction of the tube holding portion 12 is orthogonal to the axis of the tube C. The tube holding portion 12 is in contact with the three-dimensional tube C and has an inner peripheral surface divided into 2 portions. The tube holding portion 12 can be in an open state in which the inner peripheral surface thereof is separated, and a closed state in which the inner peripheral surface thereof is in contact with the three-dimensional tube C. The cartridge holding portion 12 is opened and closed by an opening and closing actuator, and can be changed from an open state to a closed state or from the closed state to the open state. The opening/closing actuator is disposed above the portion of the chain 11 closer to the sprocket 10 a. The opening/closing actuator may be disposed on the side of the chain 11.

When the tube holding portion 12 is in the open state, the flat tube B is supplied between the inner circumferential surfaces separated into 2 parts by the tube supply mechanism 20. When the supplied flat state tube B is changed from the open state to the closed state by the tube holding member 12, the 2 folds a and B facing each other are brought close to each other to form the three-dimensional state tube C. The three-dimensional tube C is held by the tube holding portion 12, moved by the tube holding portion moving mechanism, and conveyed along the chain 11.

The tube holding portion 12 has a tube forming portion, a bottom plate forming portion, and a lid plate forming portion. The barrel forming part is connected with the side plates 1 and 2 of the three-dimensional barrel C, and the bottom plate forming part and the cover plate forming part are positioned at two sides of the barrel forming part. The tube forming section is used for forming the flat state tube B into a three-dimensional state tube C. The bottom plate forming portion (cover plate forming portion) is for forming the bottom plate (cover plate) into a concave shape and fitting into the opening end portion of the three-dimensional cylinder C.

As shown in fig. 2, a tube supply mechanism 20 is provided on the side of the moving path (moving path of the tube holding portion 12) of the tube-shaped holding and conveying mechanism 10, specifically, on the side of the sprocket 10a side of the chain 11.

The cartridge supply mechanism 20 includes a stacking unit 21 (see fig. 2) and a feeding unit 22 (see fig. 2 and 3). The stacking portion 21 is internally stacked with a plurality of flat state cartridges B flatly. The feeding portion 22 feeds the flat-state tube B into between the inner circumferential surfaces of the tube holding portion 12 when the tube holding portion 12 is in the open state. The feeding section 22 has an adsorber for adsorbing the flat state cartridge B by sucking air. The flat cartridges B collected in the deposition section 21 are adsorbed by the adsorbers of the delivery section 22. The feeding section 22 takes out the flat state cartridges B one by one to the side of the cartridge holding section 12 opened by the opening/closing actuator. The feeding section 22 feeds the flat state cartridge B into the cartridge holding section 12. As shown in fig. 3, the feeding unit 22 is movable in three directions, i.e., a direction X in which the moving path of the holding and conveying mechanism 10 is formed in a parallel cylinder, a direction Y orthogonal to the direction X, and an up-down direction Z.

A bottom plate fitting mechanism 30 is provided on the side of the movement path of the cylindrical holding and conveying mechanism 10. The bottom plate fitting mechanism 30 is disposed on the sprocket 10b side of the cartridge supply mechanism 20. The base plate fitting mechanism 30 includes a stacking portion 31 and a base plate fitting portion 32. The stacking portion 31 has a plurality of bottom plates D stacked therein flatly. The bottom plate fitting portion 32 fits the bottom plate D into the opening end portion of the three-dimensional cylinder C while forming the bottom plate D into a concave shape. The base plate insertion portion 32 includes an adsorber for adsorbing the base plate D. In the present embodiment, the stacking portion 31 is configured to take out the bottom plate D downward, but may be configured to take out the bottom plate D upward. The bottom plate D collected in the stacking portion 31 is attracted by the suction unit of the bottom plate fitting portion 32, and moves to a position facing one open end of the three-dimensional cylinder C held by the cylinder holding portion 12. The bottom plate D is pushed into the bottom plate forming portion of the cartridge holding portion 12 by the bottom plate fitting portion 32. In this case, the bottom plate D is formed in a concave shape between the bottom plate forming portion and the bottom plate fitting portion 32. The molded bottom plate D is fitted into the opening end of the three-dimensional cylinder C.

The bottom plate fitting portion 32 is movable along an arc (e.g., 90 °) between a position where the bottom plate D is taken out from the stacking portion 31 and a position facing one opening end portion of the three-dimensional cylinder C. This movement is performed by a predetermined actuator. The bottom plate fitting portion 32 is movable from a position facing the opening end toward the inside of the three-dimensional cylinder C.

The material of the base sheet D includes, as in the case of the semi-finished cardboard a, paper used for a sheet of a plate-like paper or a paper cup (paper cup), a synthetic resin layer (film) or an aluminum foil laminated on the paper, a material in which an inorganic oxide plating layer such as silicon oxide, aluminum oxide, magnesium oxide is formed on the synthetic resin layer (film), a composite material coated with a synthetic resin layer, a plastic film (layer) not using paper, a material in which an aluminum foil is laminated on a plastic film, a material in which an inorganic oxide plating layer is formed, and the like.

On the side of the cylindrical form of the moving path holding the carrying mechanism 10 where the bottom plate embedding mechanism 30 is arranged, a bottom sealing mechanism 40 is provided. The bottom sealing mechanism 40 is disposed on the sprocket 10b side of the bottom plate fitting mechanism 30. The bottom plate D fitted into the open end of the three-dimensional cylinder C by the bottom plate fitting mechanism 30 is joined and sealed by the bottom sealing mechanism 40. The bottom sealing mechanism 40 performs joint sealing by a heat sealing method such as an ultrasonic method, a high frequency method, and an electrothermal method, or by a non-heat sealing method.

A content loading mechanism 50 is provided on the opposite side of the bottom sealing mechanism 40 across the moving path of the barrel holding and conveying mechanism 10. When the content loading mechanism 50 is manually loaded, it can be arranged as necessary.

The content loading mechanism 50 has a conveyor belt 51 for conveying the content and an air cylinder 52, and the air cylinder 52 loads the content conveyed by the conveyor belt 51 into the three-dimensional cylinder C. In the present embodiment, the air cylinder 52 is disposed on the sprocket 10b side of the bottom seal mechanism 40, but may be opposed to the bottom seal mechanism 40. The conveyor belt 51 is mounted on sprockets 51a and 51b, and the sprockets 51a and 51b are pivotally supported on the body frame f. The sprockets 51a and 51b are driven by an electric motor such as a pulse motor or a servo motor. Sprockets 51a, 51b are driven synchronously with sprockets 10a, 10 b. Thus, the content is conveyed in synchronization with the cartridge holding portion 12. The transported content is pushed out toward the moving path of the cartridge holding and transporting mechanism 10, and loaded from the opening on the opposite side of the bottom plate D of the three-dimensional cartridge C.

A cover plate fitting means 60 is provided on the side of the cylindrical moving path for holding the carrying means 10 where the content loading means 50 is disposed. The cover plate fitting mechanism 60 is disposed on the sprocket 10b side of the cylinder 52. The cover fitting mechanism 60 includes a stacking portion 61 and a cover fitting portion 62. The stacking portion 61 is internally stacked with a plurality of cover plates E flatly. The cover plate fitting portion 62 is fitted into the opening end portion of the three-dimensional cylinder C while forming the cover plate E into a concave shape. The cover plate insertion portion 62 includes an adsorber for adsorbing the cover plate E. In the present embodiment, the stacking portion 61 is configured to take out the cover E downward, but may be configured to take out the cover E upward. The lid plate E collected in the stacking portion 61 is attracted by the suction unit of the lid plate fitting portion 62, and moves to a position facing one open end of the three-dimensional cylinder C held by the cylinder holding portion 12. The lid E is pushed into the lid forming portion of the cartridge holding portion 12 by the lid fitting portion 62. At this time, the cover E is formed in a concave shape between the cover forming portion and the cover fitting portion 62. The molded cover plate E is fitted into the opening end of the three-dimensional cylinder C.

The material of the cover sheet E includes, similarly to the semi-finished paperboard a or the base sheet D, paper used for a thin sheet of paper, paper cup (paper cup), and the like, a synthetic resin film or an aluminum foil laminated on the paper, a material in which an inorganic oxide plating layer such as silicon oxide, aluminum oxide, magnesium oxide, and the like is applied on a synthetic resin film, a composite material in which a synthetic resin layer is applied, a plastic film (layer) not using paper, a material in which an aluminum foil is laminated on a plastic film, a material in which an inorganic oxide plating layer is applied, and the like.

The lid plate forming portion of the cartridge holding portion 12 is a circular hole into which the lid plate fitting portion 62 is fitted. When fitting, a gap corresponding to the thickness of the cover E is formed between the cover forming portion and the cover fitting portion 62. The cover plate E before being formed into a concave shape is larger than the hole of the cover plate forming portion. When the cover E is pushed into the cover forming portion by the cover fitting portion 62, the portion of the cover E pushed out of the hole of the cover forming portion is sandwiched in the gap between the cover forming portion and the cover fitting portion 62. As a result, the cover plate E is shaped into a concave shape. Then, the cover plate E is further pushed in by the cover plate fitting portion 62 and fitted into the opening end portion of the three-dimensional cylinder C.

The cover plate fitting portion 62 is movable along an arc between a position where the cover plate E is taken out from the stacking portion 61 and a position facing one opening end portion of the three-dimensional cylinder C. This movement is performed by a predetermined actuator. Further, the opening end portion can be moved from a position facing the inside of the three-dimensional cylinder C.

A cover sealing mechanism 70 is provided on the side of the cylindrical moving path for holding the carrying mechanism 10 where the cover fitting mechanism 60 is disposed. The cover sealing mechanism 70 is disposed on the sprocket 10b side of the cover fitting mechanism 60. The lid plate E fitted to the opening end of the three-dimensional tube C by the lid plate fitting mechanism 60 is joined and sealed by the lid sealing mechanism 70. The lid sealing mechanism 70 performs joint sealing by a heat sealing method such as an ultrasonic method, a high frequency method, or an electrothermal method, or by a non-heat sealing method. Thus, a cylindrical container F filled with the content is formed.

An opening/closing actuator and a container feeding mechanism 80 are provided on the sprocket 10b side of the lid sealing mechanism 70. The opening/closing actuator is used to open the cartridge holding section 12. The container feeding mechanism 80 discharges the cylindrical container F from the cartridge holding portion 12 to the outside. In the present embodiment, the opening/closing actuator is disposed above the chain 11, but may be disposed on the side of the chain 11.

The container feeding mechanism 80 includes a discharge arm 81 and a discharge mechanism 82. The discharge arm 81 discharges the cylindrical container F from the opened cylinder holding portion 12. The discharge mechanism 82 discharges the cylindrical container F to the outside. The discharge arm 81 reciprocates to push the cylindrical container F out of the cartridge holder 12. The discharge mechanism 82 may be, for example, an inclined slide table lowered toward the outside, a device for automatically stacking and discharging the cylindrical containers F, a belt conveyor for carrying out the cylindrical containers F to the outside, or the like. The discharge arm 81 and the discharge mechanism 82 face each other across the moving path of the cylindrical holding/conveying mechanism 10.

In the present embodiment, the tube holding and conveying mechanism 10 includes the chain 11 wound around the sprockets 10a and 10b, and the tube supply mechanism 20, the bottom plate fitting mechanism 30, the bottom sealing mechanism 40, the content loading mechanism 50, the lid plate fitting mechanism 60, the lid sealing mechanism 70, and the container dispensing mechanism 80 are arranged along the chain 11. The cylindrical form-holding conveying mechanism may have a plurality of chains mounted on sprockets, and the mechanisms may be disposed along the sprockets in a distributed manner. For example, the cartridge holding and conveying mechanism has 2 endless chains, and the cartridge supply mechanism 20, the bottom plate insertion mechanism 30, and the bottom sealing mechanism 40 are arranged along one endless chain, and the content filling mechanism 50, the lid plate insertion mechanism 60, the lid sealing mechanism 70, and the container dispensing mechanism 80 are arranged along the other endless chain.

Next, an example of the structure and operation of the cartridge holding section 12 will be described in detail with reference to fig. 4, 5A to 5B, and 6A to 6B. The structure and operation of the tube holding portion 12, which can be opened and closed by the opening and closing actuator, are not limited as long as the inner peripheral surface can be divided into 2 parts.

As shown in fig. 5A, the tube holding portion 12 has a pair of half tubular bodies 13, 14 arranged side by side in the moving direction. As shown in fig. 8A, the half cylindrical bodies 13 and 14 are provided with inner circumferential surfaces 13a and 14a that are in close contact with the three-dimensional cylinders C (side plates 1 and 2) in the closed state, respectively. At both ends of the inner peripheral surfaces 13a, 14a, semi-annular bottom plate forming portions 13b, 14b and semi-annular cover plate forming portions 13c, 14c are provided, respectively. The bottom plate forming portions 13b and 14b are for forming the bottom plate D into a concave shape. The cover plate forming portions 13c and 14c are for forming the cover plate E into a concave shape. A step is formed between the inner peripheral surfaces 13a, 14a and the bottom plate forming portions 13b, 14 b. The step extends from the bottom plate forming portions 13b, 14b toward the inner peripheral surfaces 13a, 14 a. Similar steps are formed between the inner peripheral surfaces 13a, 14a and the cover plate forming portions 13c, 14 c. These steps may not be formed. The width of the step is 1 to 1/5 times the thickness of the three-dimensional cylinder C, preferably equal to 1/2 times the thickness of the three-dimensional cylinder C.

The half cylinders 13, 14 are provided with bearings 13d, 14d, respectively. The bearings 13d, 14d are mounted on the shaft 15, and the half cylinders 13, 14 are rotatable about the shaft 15. Thus, the half cylinders 13 and 14 can be opened and closed.

The chain 11 has roller link plates 17 and pin link plates 18 alternately arranged. The roller link plates 17 are fixed by pressing a pair of sleeves into 2 overlapped link plates. The rollers are mounted on the sleeve. The roller is freely rotatable. 2 rollers are arranged in parallel along the longitudinal direction of the link plate. The pin link plates 18 are disposed between the adjacent 2 roller post link plates 17. The roller link plate 17 and the pin link plate 18 are connected by a pin 19 and are rotatable about the pin 19. The pin link plate 18, which is located at a predetermined position of the chain 11, has its shaft 15 fixed by means of the bracket 16. The bracket 16 is integrally formed on a pin link plate 18. In addition, the bracket 16 may be formed on the roller link plate 17.

In the closed state, in order to align the shaft 15 and the portion where the half cylinder 13 and the half cylinder 14 overlap each other, the inner peripheral surfaces of the bearings 13d and 14d are provided with projections, and the outer peripheral surface of the shaft 15 is provided with a groove into which the projections are fitted, so that the projections are arranged perpendicularly to the extending direction of the chain 11. Further, grooves may be provided on the inner peripheral surfaces of the bearings 13d and 14d, and protrusions may be provided on the outer peripheral surface of the shaft 15 in contact with the bearings 13d and 14 d. The protrusion moves along the groove. The slot is formed in a predetermined area and the range of motion of the protrusion is defined by the area of the slot. The area of the groove is determined by: in the closed position, the overlapping portions of the half-cylinders 13, 14 and the shaft 15 are arranged perpendicular to the direction of extension of the chain 11; in the open state, the half cylinders 13, 14 are rotated at a predetermined angle. When the half cylinders 13, 14 are rotated by a predetermined angle, the maximum distance between the inner peripheral surfaces 13a, 14a is equal to the width of the flat state cylinder B.

A coil spring (not shown) is provided on the shaft 15 to urge the half cylinders 13 and 14 in the direction of the closed state.

In the closed state, the half cylinder 13 and the half cylinder 14 overlap each other, and the half cylinders 13 and 14 have grips 13e and 14e on their outer peripheral surfaces. The hand 13e and the hand 14e are provided with recesses 13f and 14f, respectively. The opening/closing actuator 90 includes opening pins 90a and 90 b. The opening pins 90a, 90b are driven by a predetermined actuator. When the cartridge holding portion 12 is changed from the closed state to the open state, the opening pins 90a and 90b are inserted into the recesses 13f and 14f, respectively.

The cartridge holding portion 12 is brought into a closed state by the elastic force of the coil spring before the cartridge supplying step (i). As shown in fig. 4, in the tube supplying step (i), the plurality of tube holding units 12 that are continuously moving are sequentially opened as shown by the broken lines, by the opening/closing actuators disposed in the vicinity of the moving path of the tube forming/holding/conveying mechanism 10.

The operation of the cartridge holder 12 will be described below. As shown in fig. 5A, the cartridge holding portion 12 is moved by the chain 11 to a position facing the opening/closing actuator 90. Next, as shown in fig. 5B, the open pins 90a, 90B are inserted into the recesses 13f, 14 f. Then, as shown in fig. 6A, the opening pins 90a, 90b are separated from each other, so that the half cylinders 13, 14 are rotated by a predetermined angle about the shaft 15.

Next, in the cartridge supply step (first), the cartridge supply mechanism 20 supplies the flat cartridge B to the cartridge holding portion 12. At this time, the feeding unit 22 sucks the flat state cartridges B accumulated in the accumulating unit 21, moves in the Z direction (vertical direction) and the X direction (moving direction), and takes out the flat state cartridges B one by one to the side of the cartridge holding unit 12. Then, the feeding section 22 feeds the flat state tube B between the half tube bodies 13, 14. The flat-state tube B is supported in a horizontal state parallel to the chain 11 in the tube holding portion 12.

As shown in fig. 6B, when the opening pins 90a and 90B approach each other, the half cylinders 13 and 14 are rotated by the coil spring force, and the open state is changed to the locked state. Then, the opening pins 90a, 90b are pulled out from the recesses 13f, 14 f. At this time, the flat state tube B is pressed by the half tube bodies 13, 14, and the opposing fold lines a, B are brought close to each other. As a result, the side plates 1 and 2 of the flat state tube B are separated from each other in the vertical direction, and the flat state tube B becomes the three-dimensional state tube C (tube forming step). The outer peripheral surface of the three-dimensional tube C is held in close contact with the inner peripheral surfaces 13a and 14a of the tube holding portion 12 and is conveyed in this state. The operation of the tube holding portion 12 is performed while the tube holding portion 12 is moved.

The apparatus of the present invention may further comprise a tension mechanism for outwardly tensioning each of the 2 side plates 1 and 2 of the tube B to separate the side plates 1 and 2 from each other. The tension mechanism separates the side plates 1 and 2 from each other before the opposing fold lines a and B of the tube B are brought close to each other in the tube forming step II. When the opposing fold lines a, b are brought close to each other in this way, the side plates 1, 2 are prevented from being bent integrally without being separated from each other as shown in fig. 1C and 1D.

The tension mechanism may have a tapered member with a tapered surface inserted into the open end of the flat state tube B. 1 or 2 cone members are inserted into at least one of the 2 open ends of the flat state tube B to separate the side plates 1, 2 from each other.

The tensioning mechanism may be provided with a caliper having a scissors shape with 2 front end parts which can be engaged and disengaged. The open end of the flat-state cartridge B is inserted in a state where the 2 front end members are in contact with each other. When the 2 front end parts are separated, the lip of the flat state cartridge B is opened.

In this embodiment, the tension mechanism is provided with at least 2 suction parts which are respectively sucked on the side plates 1, 2 of the flat state cylinder B. The side plates 1 and 2 are respectively tensioned outward when the suction portions sucked to the side plates 1 and 2 are separated from each other. In the cartridge holding portion 12, a hole is provided for communicating the inside of the cartridge holding portion 12 with the outside through the inner peripheral surfaces 13a, 14a (see fig. 8A). The adsorption part adsorbs the parts of the side plates 1, 2 which can be seen from the hole.

As described above, the tension mechanism separates the side plates 1 and 2 from each other before the opposing fold lines a and b are brought close to each other, but the side plates 1 and 2 may be separated from each other when or after the opposing fold lines a and b are brought close to each other.

The tube forming holding and conveying mechanism 10 moves continuously in the arrow direction while holding the three-dimensional tube C in the tube holding portion 12, and sequentially conveys the three-dimensional tube C to the following steps, namely, a bottom plate fitting step (C), a bottom plate joining and sealing step (r), a content loading step (C), a cover plate fitting step (C), a cover plate joining and sealing step (C), and a tubular container delivery step (r).

Next, the structure and operation of another example of the tube holding portion 12 will be described in detail with reference to the side views of fig. 7A to 7C. Most of the structure of this example is basically the same as that of the above example. In this example, the same components as those described in fig. 4, 5A to 5B, and 6A to 6B are denoted by the same reference numerals, and detailed description thereof will be omitted.

This structure is different from the above structure in that a linear guide (linear guide) is used instead of the shaft 15 to open and close the tube holding portion 12. The half-cylinder 13 is fixed to a pin link plate 18 by a bracket 16. The half cylinder 13 may be fixed to the roller link plate 17 by a bracket 16. A rod-shaped linear guide 16a projects from the bracket 16 parallel to the direction in which the chain 11 extends. In the locked state, the linear guide 16c protrudes from the half cylinder 13 overlapping with the half cylinder 14 in parallel with the linear guide 16 a. A hole 14g into which the linear guides 16a, 16c are inserted is provided in the half cylinder 14, and the hole 14g is parallel to the extending direction of the chain 11. In this way, the half cylinder 14 can be moved along the linear guides 16a, 16 c. As a result, the cartridge holding part 12 can be opened and closed. A spring 16b is mounted on the linear guide 16 a. The half cylinder 14 is pushed in a direction to latch the cartridge holding portion 12. In the portions where the linear guides 16a, 16c meet the hole 14g, friction reducing members are used. The friction reducing member is a bearing, preferably a bearing metal. A linear cylinder (linear cylinder) may be attached to at least one of the outer surfaces of the half cylinders 13 and 14 (the surface opposite to the inner circumferential surfaces 13a and 14a, or the surface facing the outside when the half cylinders 13 and 14 are combined). The linear cylinder can move the half cylinder 14 away from or close to the half cylinder 13. The linear cylinder moves integrally with the tube holding portion 12.

The operation of the cartridge holder 12 will be described below. The operation of this example is basically the same as that of the above example. As shown in fig. 7A, the opening pin of the opening/closing actuator 90 is inserted into the recess 14f of the hand 14 e.

Next, as shown in fig. 7B, the opening pin of the opening/closing actuator 90 moves from the half cylinder 13 toward the half cylinder 14 in parallel with the extending direction of the chain 11. As a result, the half cylinder 14 moves away from the half cylinder 13 along the linear guides 16a, 16 c. At this time, after the half cylinder 14 is separated from the half cylinder 13, the maximum distance between the inner peripheral surfaces 13a and 14a is equal to the width of the flat cylinder B. Thus, the cartridge holding portion 12 is opened. In this opened state, the tube supply mechanism 20 supplies the flat-state tube B to the tube holding portion 12. The flat-state tube B is supported in a horizontal state parallel to the chain 11 in the tube holding portion 12.

Next, as shown in fig. 7C, the opening pin of the opening/closing actuator 90 moves from the half cylinder 14 toward the half cylinder 13. The half cylinder 14 moves closer to the half cylinder 13 by the elastic force of the spring 16 b. Thus, the tube holding portion 12 is changed from the open state to the locked state. In this case, the flat state tube B is the three-dimensional state tube C as in the above example. Then, the opening pin of the opening/closing actuator 90 is pulled out from the recess 14f of the hand 14 e. The above-described tension mechanism may be used before the tube holding portion 12 is brought into the closed state.

Next, the subsequent step of the barrel forming step will be described. The bottom plate embedding process (c) is explained first. As shown in fig. 2, the bottom plate D is attracted by the bottom plate fitting portion 32 and moves from the stacking portion 31 to a position facing one opening end portion of the three-dimensional cylinder C. As shown in fig. 8A, the bottom plate fitting portion 32 is provided with a hole 32a for sucking air. An arm 33 is fixed to the bottom plate fitting portion 32. The arm 33 is driven by a predetermined actuator. The arm 33 is provided with a passage through which air passes, which is connected to the hole 32 a.

The bottom plate forming portions 13b and 14b of the tube holding portion 12 are circular holes into which the bottom plate fitting portions 32 are fitted. After the fitting, a gap corresponding to the thickness of the bottom plate D is formed between the bottom plate forming portions 13b and 14b and the bottom plate fitting portion 32. The bottom plate D before being formed into a concave shape is larger than the holes of the bottom plate forming portions 13b, 14 b.

Next, as shown in fig. 8B, the bottom plate D is pushed into the bottom plate forming portions 13B and 14B by the bottom plate fitting portion 32. The portion of the bottom plate D pushed out of the holes of the bottom plate forming portions 13b and 14b is sandwiched between the bottom plate forming portions 13b and 14b and the bottom plate fitting portion 32. The pinched portion of the bottom panel D becomes flange D1. As a result, the bottom plate D is shaped concave.

Then, as shown in fig. 8C, the bottom plate D is further pushed in by the bottom plate fitting portion 32 and fitted into the opening end portion of the three-dimensional cylinder C.

Next, a modified example of the tube holding portion 12 will be described. The end portion (tube holding end portion) of the tube holding portion 12 having the bottom forming portions 13b, 14b and the tubular body portion of the tube holding portion 12 having the inner peripheral surfaces 13a, 14a are formed by separate members. The cartridge holding end is arranged at a predetermined position, and the cartridge body portion is moved by the chain 11. The cartridge body portion is positioned relative to the cartridge retaining end such that: the central axis of the columnar space surrounded by the inner peripheral surfaces 13a and 14a is aligned with the central axis of the disk-shaped space surrounded by the bottom plate forming portions 13b and 14 b. After the positioning, the bottom plate D is formed into a concave shape and fitted into the opening end of the tube C, in the same manner as in the bottom plate fitting step (C).

The cartridge retaining end may be variously modified and modified. Next, a modified example of the tube holding end portion will be described. The tube holding end portion is provided with a slit extending from the outside to the bottom plate forming portions 13b and 14b and penetrating the tube holding end portion. The bottom plate D is formed into a concave shape and enters the inside of the tube holding end portion through a slit from the outside. The entered bottom plate D is positioned at an appropriate position of the bottom plate forming portions 13b, 14b, and a bottom plate holding mechanism for holding the bottom plate D is provided at the position. The bottom plate holding means is a groove provided on the inner peripheral surface of the bottom plate forming portions 13b and 14 b. The incoming bottom plate D is inserted into the slot. The floor holding mechanism is not limited to this groove. The groove and the slit may be provided in the cartridge holding section 12 in which the cartridge holding end portion and the cartridge body portion are formed integrally. In addition, when the side surface of the three-dimensional cylinder C is formed by a plurality of flat surfaces, for example, when the outer shape of the three-dimensional cylinder C is a rectangular prism, at least a part of the inner peripheral surface of the cylinder holding portion 12 is formed by a plurality of flat surfaces. The flat surface of the inner peripheral surface of the tube holding portion 12 is in contact with the side surface of the three-dimensional tube C.

Next, a bottom plate fitting process using the tube holding end portion will be described. After the bottom plate D is positioned, the bottom plate fitting portion 32 enters the inside of the tube holding end portion from the opening of the tube holding end portion (the opening of the portion of the tube holding portion 12 into which the bottom plate D is pushed in (see fig. 8A) in the description of the bottom plate fitting step (c)), and presses the bottom plate D. The bottom plate D is formed into a concave shape in the same manner as in the bottom plate fitting step (c). When the bottom plate D is further pushed by the bottom plate embedding mechanism 30, the bottom plate D enters the barrel portion. As a result, the bottom plate D is fitted into the open end of the three-dimensional state cylinder C.

Next, the bottom portion bonding and sealing step (iv) will be described with reference to fig. 2. The outer peripheral surface of the flange D1 of the bottom plate D is joined and sealed to the inner peripheral surface of the open end of the three-dimensional cylinder C by the bottom sealing mechanism 40. Thus, the bottom is formed on the three-dimensional cylinder C. The joining and sealing are performed by the bottom sealing means 40 by a heat sealing method such as an ultrasonic method, a high frequency method, an electrothermal method, or the like, or by a non-heat sealing method. An adhesive (a pressure-sensitive adhesive such as glue, paste, or adhesive when the non-heat-sealing method is used, or a hot-melt adhesive or a dry heat-sensitive adhesive when the heat-sealing method is used) is applied in advance to either or both of the outer peripheral surface of the flange D1 of the base plate D and the inner peripheral surface of the opening end portion of the three-dimensional cylinder C. A hot-melt resin may be provided. The adhesive is applied between the cylindrical forming step and the bottom plate embedding step.

Next, referring to fig. 2, 3 and 4, the content filling process (c) will be described. The content on the belt conveyor 51 is conveyed in synchronization with the three-dimensional tube C held by the tube holding portion 12. Thus, the content and the three-dimensional state cylinder C are arranged at predetermined positions with respect to the cylinder 52. Then, the content is pushed out from the belt conveyor 51 toward the opening of the three-dimensional cylinder C by the air cylinder 52 and loaded into the three-dimensional cylinder C.

Next, the lid plate insertion process (c) will be described. As shown in fig. 2, the cover E is attracted by the cover fitting portion 62 and moves from the stacking portion 61 to a position facing the other opening end of the three-dimensional cylinder C. The other opening end is located on the opposite side of the opening end into which the bottom plate D is fitted. As shown in fig. 9A, the cover plate fitting portion 62 is provided with a hole 62a for sucking air. An arm 63 is fixed to the cover plate fitting portion 62. The arm 63 is driven by a predetermined actuator. The arm 63 is provided with a passage for passing air, which is connected to the hole 62 a.

As described above, the lid plate forming portions 13c, 14c of the cartridge holding portion 12 are circular holes into which the lid plate fitting portions 62 are fitted. After fitting, a gap corresponding to the thickness of the cover E is formed between the cover forming portions 13c and 14c and the cover fitting portion 62. The cover E before being formed into a concave shape is larger than the holes of the cover forming portions 13c, 14 c.

Next, as shown in fig. 9B, the cover E is pushed into the cover forming portions 13c and 14c by the cover fitting portion 62. The portions of the cover E extruded from the holes of the cover forming portions 13c, 14c are sandwiched in the gaps between the cover forming portions 13c, 14c and the cover fitting portion 62. The pinched portion of cover E becomes flange E1. As a result, the cover plate E is shaped into a concave shape.

Then, as shown in fig. 9C, the cover plate E is further pushed in by the cover plate fitting portion 62 and fitted into the opening end portion of the three-dimensional cylinder C.

As described in the bottom plate fitting step (c), the tube holding portion 12 may be formed of separate members, i.e., the tubular body portion 121 and the tube holding end portion 122, as shown in fig. 10A. Next, another modification of the tube holding portion 12 will be described with reference to fig. 10A to 10D. Fig. 10A is a sectional view showing a state where the cylinder portion 121 is away from the cylinder holding end portion 122. The cylindrical portion 121 has inner peripheral surfaces 13a, 14a, and holds the cartridge C. The cartridge retaining end 122 has a lower face 122a and an upper face 122 b. The cylinder holding end portion 122 is provided with a circular cap forming hole 122c, and the forming hole 122c penetrates from the lower surface 122a to the inside and is surrounded by the cover plate forming portions 13c and 14 c. A circular opening 122d penetrating from the upper surface 122b to the cap forming hole 122c is provided above the cap forming hole 122 c. The radius of the opening 122d is larger than that of the cap forming hole 122 c. A step 122e is formed between the cap forming hole 122c and the opening 122 d.

Next, a cap plate inserting process using the cylinder part 121 and the cylinder holding end part 122 will be described. First, the cylindrical portion 121 moves while holding the tube C, and approaches the tube holding end portion 122 (fig. 10A).

The proximal cylinder portion 121 is positioned including an open end face 121a (see fig. 10A) of the cylinder portion 121 facing a lower face 122a of the cartridge holding end 122 (fig. 10B). In this case, the central axis of the cylindrical space surrounded by the inner circumferential surfaces 13a and 14a coincides with the axis of the cap forming hole 122 c. The radius of the lid forming hole 122C is equal to the radius of the inner circumferential surface of the tube C. Then, the cover plate E is placed on the step 122E. The cover plate E is positioned and held by the step 122E. The cover E may be placed before the positioning of the cylindrical portion 121.

The positioned cover E is pushed into the cover forming hole 122C from the step 122E by the cover fitting portion 620 (fig. 10C). At this time, the cover plate E is formed.

The formed cover plate E is pushed further into the barrel portion 121 (fig. 10D). As a result, the cover plate E is fitted into the open end of the cartridge C.

In this modification of the cartridge holder 12, the cylindrical body 121 and the cartridge holding end 122 are used to fit the cover plate E. The cylindrical body portion 121 and the cartridge holding end portion 122 can be similarly employed in embedding the bottom plate D.

In this modification, when the cylindrical portion 121 is positioned with respect to the cartridge holding end portion 122, the cylindrical portion 121 and the cartridge holding end portion 122 are separated from each other, but may be connected to each other.

In addition, although the cartridge holding end portion 122 of this modification is provided with the stepped portion 122E for positioning the cover plate E, the present invention is not limited to this. For example, a hole without a step may be provided in the cartridge holding end portion so as to penetrate from below, and a ring surrounding the hole may be provided around the upper surface side of the hole. The cover plate E can be positioned with respect to the hole by placing the cover plate E in the ring. The ring may be provided on the cartridge holding portion in which the cartridge holding end portion is formed integrally with the cartridge body portion. In addition, the gap and the positioning groove can also be arranged in the bottom plate embedding process step III.

Next, a lid bottom portion bonding and sealing process is described with reference to fig. 2. The outer peripheral surface of the flange E1 of the cover E is joined and sealed to the inner peripheral surface of the open end of the three-dimensional cylinder C by the cover sealing mechanism 70. Thus, the bottom is formed on the three-dimensional cylinder C. The joining and sealing are performed by the bottom sealing means 40 by a heat sealing method such as an ultrasonic method, a high frequency method, an electrothermal method, or the like, or by a non-heat sealing method. An adhesive (a pressure-sensitive adhesive such as glue, paste, or adhesive when the non-heat-sealing method is used, or a hot-melt adhesive or a dry heat-sensitive adhesive when the heat-sealing method is used) is applied in advance to either or both of the outer peripheral surface of the flange E1 of the lid plate E and the inner peripheral surface of the opening end portion of the three-dimensional cylinder C. A hot-melt resin may be provided. The adhesive is applied between the procedure of filling the contents (fifthly) and the procedure of inserting the cover plate (sixthly). Thus, the cover plate is formed on the three-dimensional cylinder C. In the above step, the cylindrical container F shown in fig. 11 is formed.

Next, the cylindrical container dispensing step (viii) will be described with reference to fig. 3. When the cylindrical container F held by the cartridge holding portion 12 reaches the position facing the discharge arm 81, the cartridge holding portion 12 is opened by the same opening/closing actuator as the opening/closing actuator 90 described in fig. 5A to 6B. At this time, the cylindrical container F is pushed out from the cartridge holding portion 12 to the discharge mechanism 82 by the discharge arm 81. The discharge mechanism 82 discharges the cylindrical container F to the outside.

The method for manufacturing the cylindrical container according to the embodiment of the present invention will be described in detail below.

First, embodiment 1 of the manufacturing method will be described. The manufacturing method includes a web supply step of supplying a web. The supplied paper web was folded at 2 folds facing each other to be flat, and was formed into a cylindrical shape when it was swollen. The web is formed in a web forming process.

The following describes the web forming process with reference to fig. 12. The semi-finished paperboard is prepared first. The semi-finished paperboard is a rectangular paper as shown in fig. 12A. The semi-finished cardboard has a central portion 2a, side portions 1a, 3a connected to the central portion a by creases a, b. The semi-finished cardboard is folded at the creases a, B, so that the side portions 1a, 3a overlap each other (fig. 12B). In fig. 12B, the side portion 1a is overlapped on the upper surface of the side portion 3a, but the side portion 1a may be positioned below the side portion 3 a. The lengths of the side portions 1a, 3a and the central portion 2a are L1, L3 and L2, respectively, and L3 is longer than L1. Additionally, L1 is about half of L2. Thus, the end of the side portion 1a opposite to the fold line a is positioned at about the center of the center portion 2 a.

Then, the overlapping portions of the side portions are joined. The joining is performed by applying an adhesive such as a pressure-sensitive adhesive such as glue, paste, or adhesive and then pressing the applied adhesive by a non-heating bonding method. Or by applying a hot-melt adhesive, a hot-melt resin, a heat-sensitive adhesive, or the like, and then applying pressure by a heat bonding method. As described above, the pocket pasting method is used to fold the paper web into a flat state at the 2 folds a and b facing each other.

In the case of the paper roll formed by the pocket pasting method, the side portion 1a is superposed on the upper surface of the side portion 3a as described above. Specifically, the upward surface of the side portion 3a is joined to the downward surface of the side portion 1 a. This pasting method is called an envelope pasting method. The pasting method of the present invention is not limited to the envelope pasting method. For example, the upward surface of the side portion 3a may be joined to the downward surface of the side portion 1 a. This pasting method is called a butt pasting method.

In the above pocket pasting method, the length L1 of the side part 1a is half the length L2 of the central part (this pasting method is referred to as a central pasting method here), but L1 is not limited to half the length L2. When L1 is longer or shorter than half of L2, the overlapping portion of side portions 1a and 3a is located above the vicinity of the end of central portion 2 a. This attaching method is the same as the attaching method of the above-described embodiment of the manufacturing apparatus described in fig. 1A and 1B. This pasting method is hereinafter referred to as an end pasting method.

The web material in this embodiment is substantially the same as the web material in the above-described embodiment of the manufacturing apparatus. Further, the web in this embodiment is also subjected to edge protection processing as needed.

Next, a drum forming step of raising the paper drum will be described. The opposing fold lines a, b of the web supplied in the web supply step are brought close to each other to bulge the web, thereby forming a main body of a cartridge having 2 openings. The principle of the bulging of the web is the same as that of the bulging of the flat tube into the three-dimensional tube C in the embodiment of the manufacturing apparatus described in fig. 1B, 1C, and 1D.

Then, one opening of the formed tube main body is closed (1 st closing step), the content is loaded into the tube main body (content loading step), and the other opening of the tube main body is closed (2 nd closing step). The content filling step may be performed before the 1 st closing step.

The 1 st and 2 nd sealing steps include a sealing member mounting step of mounting a sealing member to the opening of the tube main body and sealing the opening. In addition, either one of the 1 st sealing step and the 2 nd sealing step may include the sealing member mounting step, or both the 1 st sealing step and the 2 nd sealing step may include the sealing member mounting step. At least one of the 1 st closing step and the 2 nd closing step may include a closing step of, without using a closing member, for example, flattening the opening of the tube main body to close the opening and holding the opening in a closed state with an adhesive or a bundle.

The sealing member mounting step in the 1 st sealing step and the 2 nd sealing step includes a sealing member fitting member for fitting the sealing member into the opening of the cylinder main body and sealing the opening. The closing member fitting process is the same as the bottom plate fitting process in the manufacturing apparatus embodiment shown in fig. 8A, 8B, and 8C. The closing member inserting step is explained below. As shown in fig. 8B, a concave closing member similar to the bottom plate D having the flange D1 formed thereon is prepared. Next, similarly to fig. 8C, a concave closing member is fitted into the opening of the tube main body.

Next, another example of the closing member fitting step will be described with reference to fig. 13A and 13B. A concave closing member Da is prepared. Fig. 13A is a cross-sectional view of the cartridge body 5 and the closing member Da. The closing member Da has a plate-like bottom portion Da1 and a flange Da 2. Flange Da2 surrounds the periphery of bottom portion Da1 and extends perpendicular to bottom portion Da 1. The closure member Da has an opening Da3 surrounded by a flange Da 2. The opening Da3 is larger than the end surface of the cylinder main body 5 (the end surface of the cylinder main body 5 includes the opening 5a of the cylinder main body 5). Next, the prepared closing member Da is covered on the end surface of the cylinder main body 5 (fig. 13B).

Next, another example of the closing member fitting step will be described with reference to fig. 13C. Fig. 13C is a sectional view of the cylindrical body 5 and the closing member Db fitted into the cylindrical body 5. The closure member Db has a bottom surface portion Db1, a1 st flange Db2, and a2 nd flange Db 3. The bottom surface Db1 is located inward of the end of the cartridge main body 5 when fitted. The 1 st flange Db2 extends along the inner surface of the end edge of the tube main body 5 when fitted. The 2 nd flange Db3 extends along the outer surface of the end edge of the tube main body 5 when fitted.

In the present embodiment, the closing member mounting step in the 1 st closing step and the 2 nd closing step includes the closing member fitting step, but may include a step of preparing paper as a closing member and covering the paper with the opening of the tube main body without including the closing member fitting step. The paper is joined to the cylinder main body in a closing member joining step described later.

The 1 st sealing step and the 2 nd sealing step include a sealing member joining step of joining the sealing member and the tube main body after the sealing member mounting step. The cartridge body and the closure member can be joined by pressure by a non-heating joining method using an adhesive such as a pressure-sensitive adhesive such as a glue, a paste, or an adhesive, or by heating and pressure-bonding by an adhesive such as a hot-melt adhesive, a hot-melt resin, or a heat-sensitive adhesive.

In the method of manufacturing the cylindrical container according to embodiment 1 of the present invention, the cylindrical container is manufactured by the pocket pasting method without winding the paper around the cylindrical mandrel as in the conventional art. Therefore, since a device for manufacturing a box for attaching a pocket or a device for filling a content can be used, a cylindrical container can be manufactured by a simple and inexpensive device as compared with a complicated and expensive manufacturing machine using a mandrel.

Conventionally, when a roll of paper is formed on a cylindrical mandrel into a cartridge body, the formed cartridge body is removed from the mandrel, and the cartridge body is collected and transported to the next step. Since the volume of the cylinder body is large, a large space is required for the collection of the cylinder body, and the collection and transportation are not easy. In the manufacturing method of the present embodiment, a flat paper web is prepared to manufacture a cylindrical container. When the flat paper webs are collected, a large space is not required, and therefore, the paper webs are easily collected and transported.

The manufacturing method of the present embodiment includes a sealing member mounting step and a sealing member bonding step. If the closing member is formed of a material which is less likely to be bent, the shape of the end of the cylindrical body can be maintained, and the shape of the entire cylindrical container can be maintained. Especially if the concave closing member is fitted as described in fig. 8A, 8B and 8C, the shape of the cylindrical container can be more firmly maintained. When the concave closing member is fitted, the shape of the cross section perpendicular to the axis of the cylindrical container is approximately equal to the shape of the bottom plate portion (corresponding to the bottom plate D in fig. 8B) of the closing member covering the opening of the cylindrical main body. By utilizing this, the cross-sectional shape of the cylindrical container can be maintained in a desired shape, for example, a circular shape, an oval shape, or the like, by appropriately selecting the shape of the bottom plate portion of the closing member. In addition, the same effect can be obtained by using another closing member.

Next, example 2 of the production method is explained. The manufacturing method of this embodiment is basically the same as that of embodiment 1 described above. The manufacturing method of this embodiment is different from the manufacturing method of embodiment 1 described above in that the structure of the semi-finished paperboard prepared in the web forming step is different.

Fig. 14A is a plan view of a semi-finished paperboard. The semi-finished cardboard is rectangular with 2 facing folds a, b and corner folds c. The corner fold c is set in advance by press working. Thus, the corner fold c is easily bent. These folds a, b, c extend separately from each other.

In the sheet forming step of this example, such a semi-finished sheet was prepared, and a sheet having 2 opposite folds and corner folds and in a flat state was formed by a pocket pasting method.

When the web is swollen in the cylindrical forming step, a cylindrical body having 2 openings is formed in the same manner as in the manufacturing method of example 1. The tube body has a corner formed along a corner fold c. Fig. 14B is a perspective view of the bulged tube body. A corner d is formed along the corner fold c and the facing folds a and b on the tube main body. At corner d, the 2 surfaces of the cartridge body on either side of the fold a, b, c (e.g., d1, d2) are not smoothly connected.

Further, the corner d may not be formed along at least one of the folding lines a, b, and c, that is, may not be formed. When the corner d is not formed, a stripe is formed along the fold line, and 2 surfaces of the cartridge body located on both sides of the fold line are smoothly connected. The corner d may be protruded or recessed.

As described above, in the method of manufacturing the cylindrical container according to embodiment 2 of the present invention, since the opposed creases a, b and the corner crease c extending separately from each other are provided on the flat sheet of paper, the corner d or the stripe is formed along the corner crease c and the opposed creases a, b on the main body of the cylinder. By forming the corner portion d, the cross-sectional shape perpendicular to the axis of the cylindrical container can be formed into a substantially polygonal shape (e.g., a rectangular shape, a hexagonal shape, an octagonal shape, or a decagonal shape).

However, in the manufacturing method of example 1, since no corner fold is provided in the web, corners or stripes are formed along 2 portions of the opposing folds a and b in the tubular body. In this embodiment, however, since the corner portions or the stripes are formed along the opposing folding lines a, b and the corner folding line c, if a plurality of corner folding lines c are provided, the corner portions or the stripes formed along the opposing folding lines a, b become conspicuous. The cylindrical container is displayed in a shop to attract customers.

In the present embodiment, the cross-sectional shape of the cylindrical container can be made polygonal by utilizing the formation of the corner portion d as described above. On the other hand, as described in the manufacturing method of embodiment 1, if the shape of the closing member is designed appropriately, the cross-sectional shape of the cylindrical container can be made into a desired shape. Thus, the cylindrical container having a high degree of freedom in shape can be easily designed.

Next, the production method of example 3 is explained. The manufacturing method of this embodiment is substantially the same as the manufacturing method of embodiment 1 described above. The manufacturing method of this embodiment is different from the manufacturing method of embodiment 1 in that the barrel forming step is different.

The barrel forming process of the present embodiment is explained below. A forming mold having a mold inner surface surrounding an outer surface of the can body is prepared. The forming die is divided into 2 or more die parts having forming surfaces, and when these die parts are combined, the forming surfaces are combined to form a die inner surface.

Then, the divided die portions surround the opposed creases a, b and the outer surface of the flat sheet.

The mold portions are brought close to the web, the divided mold portions form the inner surfaces of the molds, 2 of the mold portions are pressed against the opposing fold lines a, b, respectively, the opposing fold lines a, b of the web are brought close to each other, and the web is raised.

Then, the mold sections are combined to form a mold inner surface, and the web raised by the mold inner surface is surrounded. As a result, a cartridge body having 2 openings was formed.

Next, a modified example of the tube forming step will be described. Before describing the modification, the web will be described with reference to fig. 12. The web fed in the web feeding step is connected by the facing folds a, b, and has 2 side plates facing each other. The 2 side plates are each formed by a central portion 2a and side portions 1a, 3a joined thereto.

The cylindrical forming step includes a separating step of pulling each of the 2 side plates outward to separate the 2 side plates from each other. The separation step is preferably performed before the paper roll is raised by bringing the opposing fold lines a and b close to each other. Thus, the side plates 1 and 2 are prevented from being bent integrally without being separated from each other when the opposing fold lines a and b are brought close to each other. The separation step may be performed simultaneously with or after the raising of the web. The barrel forming process can be variously modified and corrected.

In this embodiment, the inner surface of the mold to be molded may have a shape closely fitted to the cylinder main body. For example, when the cylinder main body has a cylindrical shape, the die inner surface may have a cylindrical inner surface. The inner surface of the mold may have a shape closely contacting a part of the cylinder main body. For example, when the cylinder main body has a shape of a positive 12-degree column, the mold inner surface may have a shape closely contacting the corner of the positive 12-degree column in the directions of 0 ° (0 °), 3 ° (90 °), 6 ° (180 °), and 9 ° (270 °), as viewed from the axis of the corner column.

Further, if the tube holding section 12 shown in fig. 5 and 6 or the tube holding section 12 shown in fig. 7 is used as a molding die, the sealing member can be easily fitted in the same manner as in the bottom plate fitting step of the manufacturing apparatus embodiment shown in fig. 8.

The cylindrical container according to the embodiment of the present invention will be described in detail.

First, embodiment 1 of the cylindrical container will be described. The cylindrical container has a cylindrical body having 2 openings. The tube main body is formed of a paper tube folded at 2 folds facing each other to be flat, and the flat paper tube is formed into a tube shape when it is swollen by bringing the 2 folds facing each other close to each other. The 2 openings were closed.

The cylindrical vessel of the present embodiment has substantially the same configuration as the cylindrical vessel F of the embodiment of the manufacturing apparatus shown in fig. 11. Therefore, in this embodiment, the same components as those of the embodiment of the manufacturing apparatus shown in fig. 11 are denoted by the same reference numerals, and detailed description thereof will be omitted. The cartridge body (1, 2, 3) has a cylindrical shape and includes side plates (1, 2) and an adhesive plate (3). The cylindrical container is filled with contents.

The tube main bodies (1, 2, 3) are formed of tube-shaped paper. As shown in fig. 1B to 1D, the web is folded at 2 folds a and B facing each other as shown in the tube B to be in a flat state, and is formed into a three-dimensional state like the tube C from the flat state. The flat state tube B is formed by sticking a semi-finished cardboard A having side plates 1, 2 and a sticking plate 3 connected by facing creases a, B by an end sticking method. The tube B may be formed by the center pasting method described with reference to fig. 12A and 12B.

Referring again to fig. 11, a concave bottom plate D and a concave cover plate E as closing members are fitted into 2 openings of the tube main body having the side plate 1, the side plate 2, and the adhesive plate 3, respectively. The bottom plate D and the cover plate E each have a flange standing on the outer periphery. The outer peripheral surfaces of these flanges are bonded to the inner peripheral surfaces of the open ends of the tube main bodies (1, 2, 3). The opening of the cartridge body (1, 2, 3) may be fitted with a concave closing member Da or a closing member Db in the embodiment of the manufacturing method described in fig. 13A, 13B, and 13C.

In this embodiment, after the cartridge main bodies (1, 2, 3) are closed, the content cannot be confirmed. Therefore, a window may be provided on the cartridge body to identify the contents. Alternatively, the window may be covered with a transparent film or the like.

The cylindrical container according to embodiment 1 of the present invention is formed not by cylindrical paper wound around a mandrel but by a paper roll formed by a pocket pasting method. Since a device for manufacturing a box or a device for filling contents for the pocket pasting method can be used, it is possible to use a manufacturing machine which is more complicated and expensive than the manufacturing machine used when a mandrel is used. The cost of the cartridge body can be suppressed.

In the present embodiment, a closing member is fitted into an opening of the tube main body (1, 2, 3). If the closing member is made of a material that is not easily deflected, the shape of the cylindrical container can be relatively strongly maintained with a simple structure.

The following describes embodiment 2 of the cylindrical container. The configuration of the present embodiment is basically the same as that of embodiment 1. The difference from embodiment 1 is the configuration of the cartridge body.

Fig. 15A is a perspective view of the cylindrical container. The cylindrical container has a cylindrical main body 1401, and corner portions d are formed on the main body 1401 so as to be separated from each other. The cartridge body 1401 is formed of the same web as that of embodiment 2 of the manufacturing method described in fig. 14B. The web had 2 opposing folds and corner folds. When the tube main body 1401 is formed by causing the 2 opposing folding lines to approach each other and the tube paper to bulge from a flat state into a tube shape, a corner d is formed on the tube main body 1401 along the opposing folding lines and the corner folding lines. The corner portions d extend parallel to each other, and the cylindrical container has a corner-column shape having parallel ridges. The portion of the barrel body between adjacent corners may also be curved. The web is formed by pasting a half-finished cardboard similar to the half-finished cardboard shown in fig. 14A by a pocket pasting method.

Concave bottom plates D and cover plates E are fitted into the 2 openings of the tube main body 1401. The shape of the bottom plate D and the cover plate E as viewed in the vertical direction is circular. The open end of the tube main body 1401 contacting the outer peripheral flanges of the bottom plate D and the lid plate E is formed with a stripe D without forming a corner D. The opening of the cartridge body 1401 is slightly circular. The sectional shape of the central portion of the cylinder main body 1401 located between the bottom plate D and the lid plate E is a substantially polygonal shape. The portion of the cartridge body 1401 located between the open end and the central portion is a twisted shape in which the open end and the central portion are smoothly connected.

In the polygonal cylindrical container, the bottom plate D and the lid plate E are polygonal in shape as viewed in the vertical direction, and have the same cross-sectional shape as the center portion of the cylinder main body 1401. The opening shape of the cartridge body 1401 is a polygon. Corners of the bottom plate D and the lid plate E are fitted to corners of the opening end of the cylinder body 1401. When manufacturing the cylindrical container, the bottom plate D and the lid plate E are fitted into the open end of the cylindrical body 1401. In the polygonal columnar container, a step of positioning corners of the bottom plate D and the lid plate E at corners of the opening end portion before fitting is necessary. On the other hand, the cylindrical container of the present embodiment does not require such a step, and can be relatively easily fitted.

The cylindrical container has a base 1402 and a lid 1403. The base 1402 is composed of a bottom plate D and a lower portion of the cylinder body 1401 fitted into the bottom plate D. The lid portion 1403 is constituted by a lid plate E1 and an upper portion of the cartridge body 1401 fitted into the lid plate E. The base 1402 and cover 1403 are connected by a tear-off portion (zipper) 1404. A tear 1404 is around the cartridge body 1401 around the entire circumference thereof, between the base 1402 and the lid 1403. Between the tear break 1404 and the base 1402, and between the tear break 1404 and the lid portion 1403, 2 lines of perforation 1404a, 1404b are formed as weakened portions. That is, the base 1402 and the cover 1403 are connected by 2 weakened portions. Alternatively, instead of forming a perforation line, a hole may be punched or a material that is easily torn in a specific direction may be sandwiched.

The lid portion 1403 can be opened and closed after being separated by the perforated lines 1404a and 1404 b. After the tear portion 1404 is separated and removed by the lines of perforations 1404a, 1404b, the base 1402 is separated from the lid portion 1403. Fig. 15B is a perspective view showing a state after separation. After separation, openings are formed in the base 1402 and the cover 1403, respectively. An inner surface surrounding an opening of the cover portion 1403 is provided with an annular positioning portion 1405 along the entire circumference of the inner surface. The positioning portion 1405 protrudes from the end of the cover portion 1403 including the opening. When the positioning portion 1405 is fitted into the opening of the base 1402, the cover portion 1403 is positioned at a position (closed position) covering the opening of the base 1402. When the cover 1403 is removed from the closed position, that is, the lid 1403 is opened, the inside of the cylindrical container communicates with the outside. Thus, the lid portion 1403 can be opened and closed freely when separated by the perforation line.

In the cylindrical container according to embodiment 2 of the present invention, since the corner portion d is formed in the cylindrical main body, the cylindrical container is less likely to roll when placed horizontally than the cylindrical main body according to embodiment 1 of the cylindrical container. In addition, in the present embodiment, if the cover part 1403 is separated by the perforated lines 1404a, 1404b, the cover part 1403 can be opened and closed freely. In addition, in the present embodiment, when the positioning portion 1405 is fitted into the opening of the base portion 1402, the cover portion 1403 can be positioned in the closed position.

Next, a modification of the cylindrical container of the present embodiment will be described with reference to fig. 16. The present modification is different from the structure of the present embodiment in that a2 nd cleavage portion is provided in parallel with the cleavage portion 1404 shown in fig. 15. In this modification, the same components as those described in fig. 15A and 15B of the present embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The lid portion 1403 provided with the positioning portion 1405, the 1 st pulling-apart portion (not shown), the intermediate portion 1502a located in the middle of the barrel body, the 2 nd pulling-apart portion 1504, and the base portion 1502b are connected in this order. After the 1 st tear portion is removed, as described in the present embodiment, the lid portion 1403 is openable and closable by the positioning portion 1405. The cover portion 1403 may be covered on the base portion 1502b when the 2 nd tear away portion 1504 is removed and the middle portion 1502a is separated from the base portion 1502 b.

For example, when the content is reduced and is not easily taken out of the cylindrical container, the content can be easily taken out by removing the 2 nd cleavage portion 1504. Further, when the content is reduced, the content is unstable in the cylindrical container, and when the cylindrical container moves, the content collides against the inner surface of the cylindrical container or the contents collide with each other. By using the 1 st and 2 nd tearing parts 1504, the size of the inner space of the cylindrical container can be adjusted to the amount of the contents, so that the contents can be stabilized in the cylindrical container and the contents do not collide with each other.

The following describes embodiment 3 of the cylindrical container. The configuration of the present embodiment is substantially the same as that of embodiment 2. In this embodiment, the same components as those described in fig. 15A and 15B of embodiment 2 are denoted by the same reference numerals, and detailed description thereof will be omitted. This embodiment is different from embodiment 2 in that the cartridge body is different in configuration.

Fig. 17A is a perspective view of the cylindrical container. Fig. 17B is a plan view of the semi-finished paperboard. On the semi-finished cardboard, 2 facing folds a, b and several corner folds c are formed. The folds a, b, c are separated from each other. The facing folds a, b are parallel to each other. These corner creases c extend at a predetermined angle with respect to the facing creases a, b. Perforated lines 1604 are formed in the blank. A portion 1605a forming a later-described positioning portion 1605 is provided on the semi-finished paperboard.

The tube main body 1601 has a corner d formed along the fold lines a, b, and c. The corners d formed along the 2 opposing folds a, b extend parallel to each other. The corner d formed along the corner fold c is not parallel to the corner d formed along the facing folds a, b, but extends in a predetermined direction.

The cylindrical container has a base portion 1602 and a lid portion 1603. The base 1602 is constituted by a bottom plate D and a lower portion of the cartridge body 1601. The lid portion 1603 is constituted by the cover plate E and an upper side portion of the cartridge body 1601. Base portion 1602 and lid portion 1603 are connected by perforated lines 1604. A perforated line 1604 is formed around the cartridge body 1601 except for the connection part 1604 a. When separated by perforated line 1604, lid section 1603 can be opened when lid section 1603 is separated from base section 1602 in a state where base section 1602 and lid section 1603 are connected by connection section 1604 a. Fig. 17C shows a perspective view of the cover portion 1603 when opened. At this time, openings are formed in the base portion 1602 and the lid portion 1603, respectively. A positioning portion 1605 similar to the positioning portion of the above-described cylindrical container 2 nd embodiment is provided on the edge surrounding the opening of the base portion 1602. The positioning part 1605 protrudes from the end including the opening of the base 1602. When the lid section 1603 is fitted to the positioning section 1605, the lid section 1603 is closed.

In the cylindrical container according to embodiment 3 of the present invention, the lid section 1603 can be opened and closed freely, and the lid section 1603 can be positioned at the closed position.

In addition, in this embodiment, the connection part 1604a is provided. When the connecting portion is not provided as in the above cylindrical container 2 nd embodiment, the lid portion needs to be positioned at the opening of the base portion, but in the present embodiment, when the lid portion 1603 is closed, the lid portion 1603 can be positioned at the closed position by moving the lid portion 1603 close to the base portion 1602.

In addition, in the present embodiment, the corner d formed along the corner fold extends in a predetermined direction. By forming the corner portion d, the shape of the cylindrical container with a high degree of freedom can be realized.

Next, embodiment 4 of the cylindrical container will be described. The configuration of the present embodiment is substantially the same as that of embodiment 3. In this embodiment, the same components as those described in fig. 17A, 17B, and 17C of embodiment 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. This embodiment is different from embodiment 3 in that the base portion has a different structure.

Fig. 18A is a perspective view of a state where the cover portion 1603 is opened. The corner 1706a, from the end containing the opening of the base 1702, extends parallel to the cylindrical container axis. Corner 1706a branches into 2 corners 1706b, 1706 c. The branched corners 1706b and 1706c are recombined. The corner 1706d extends from the merged portion up to the end on the opposite side of the opening. The portion surrounded by the 2 corners 1706b, 1706c forms an isolated portion 1707. The corner parts merged after the branches are formed in a plurality. The isolated portion 1707 is recessed relative to portions 1702a, 1702b of an adjacent base portion 1702 by corners 1706b, 1706 c.

In addition, creases corresponding to the corners 1706a, 1706b, 1706c, and 1706d are formed in the paper sheet forming the cylindrical container, and when the paper sheet is folded along these creases, the portions located in the vicinity of the creases of the paper sheet are twisted. Further, since the portion is bent when the sheet is folded along the fold lines, the sheet can be formed into a flat state by the fold lines.

In the cylindrical container according to embodiment 4 of the present invention, since the recessed isolated portion 1707 is provided, it is relatively easy to hold it by hand.

In addition, in this embodiment, branched and merged corners 1706a, 1706b, 1706c, 1706d are formed. In the branch and merge portions of the cartridge body, the isolated portion 1707 and the portions 1702a and 1702b are close to each other. Their surfaces face in different directions, so that the branched and merged portions of the cartridge body are not easily deformed.

In addition, since the branched and merged corners 1706a, 1706b, 1706c, and 1706d are formed, the shape of the cylindrical container with a higher degree of freedom can be realized.

The following describes embodiment 5 of the cylindrical container with reference to fig. 19. Fig. 19 is a perspective view of the cylindrical container. The cylindrical container has a cylindrical tube main body 1801. The cross-sectional shape of the cartridge body 1801 perpendicular to the axis is an ellipse. The tube main body 1801 has a plurality of corner portions d extending in the axial direction and spaced apart from each other. Concave closing members 1802 and 1803 are fitted into 2 openings of the tube main body 1801. An opening is formed in the cartridge body 1801. The cartridge body 1801 and the closure members 1802, 1803 forming the opening constitute a base 1804. The opening is covered by a cover portion 1805. The edges of the cover portion 1805 and the open perimeter of the base portion 1804 are connected by a perforated line and a connecting portion 1806. When the cover portion 1805 is separated from the base portion 1804 and the cover portion 1805 by the perforated line, the cover portion 1805 is opened when the cover portion 1805 is separated from the base portion 1804 in a state where the base portion 1804 and the cover portion 1805 are connected by the connecting portion 1806. A positioning portion 1807 is provided at a portion of the opening of the base portion 1804 that faces the connection portion 1806. The positioning portion 1807 is formed of a slit. When the positioning portion 1807 is inserted into the edge 1805a of the cover portion 1805 on the opposite side to the connection portion 1806, the cover portion 1805 is closed.

In the cylindrical container according to embodiment 5 of the present invention, since the cross-sectional shape of the cylindrical main body 1801 is an oval shape, the cylindrical container is relatively stable when it is placed horizontally.

In this embodiment, an opening is formed in the cartridge main body 1801, and the opening is closed when the lid portion 1805 is closed. In the above-described embodiment of the cylindrical container, the content located near the bottom plate cannot be recognized. However, if openings reaching both ends of the cylindrical container are formed, the contents at both ends of the cylindrical container can be recognized.

Next, embodiment 6 of the cylindrical container will be described with reference to fig. 20. Fig. 20A is a side view of the cylindrical container, and fig. 20B is a plan view. The cylindrical container has a cylindrical tube body 1901. The sectional shape of the cartridge body 1901 perpendicular to the axis is a rectangle with rounded corners. The cartridge body 1901 is formed with a plurality of stripes d extending in the axial direction and spaced apart from each other. A cleavage portion 1904 is formed on the cartridge body 1901. Concave closing members 1902, 1903 are fitted into 2 openings of the cartridge body 1901. The shapes of the closing members 1902, 1903 when viewed in the vertical direction are the same as the cross-sectional shape of the tube main body 1901. That is, the sectional shape of the tube main body 1901 from one opening to the other opening is substantially 4-cornered columnar shape without changing, and the shape of the opening is the same as the shape of the closing members 1901, 1902. The stripe d extends linearly from one end of the cartridge body 1901 to the other end.

In embodiment 2 of the cylindrical container, the portion of the cylindrical body 1401 between the open end and the central portion is twisted so that the open end and the central portion are smoothly connected. In contrast, in the cylindrical container of the present embodiment, the cylindrical body 1901 does not have the twisted portion as in the cylindrical container of embodiment 2. Thus, the cylindrical container of the present embodiment has a beautiful appearance. The sealing members 1902 and 1903 are in close contact with the tube main body 1901, and therefore have high adhesive strength.

In this embodiment, the shapes of the closing members 1901 and 1902 viewed in the vertical direction are the same, but may be different from each other. For example, the closure member 1902 may be circular and the closure member 1903 may be polygonal (e.g., rectangular). This point can also be applied to the above-described 1 st to 5 th embodiments.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope not departing from the spirit of the present invention.

Claims

1. A device for manufacturing a cylindrical container (F) formed of a flat and three-dimensional cylindrical container, comprising:

a barrel forming mechanism for forming the flat state barrel (B) into a three-dimensional state barrel (C);

a1 st closing mechanism for closing one open end of the three-dimensional cylinder (C);

a2 nd closing mechanism for closing the other opening end of the three-dimensional cylinder (C).

2. The apparatus for manufacturing a cylindrical container according to claim 1, wherein the flat state cylinder (B) has 2 side plates facing each other, and the apparatus further comprises a tension mechanism for outwardly tensioning each of the 2 side plates to separate the 2 side plates from each other.

3. The apparatus for manufacturing a cylindrical container according to claim 1, wherein the side surface of the three-dimensional cylinder (C) is formed by a plurality of flat surfaces, at least a part of the inner peripheral surface of the cylinder holding portion (12) is formed by a plurality of flat surfaces, and the flat surface of the inner peripheral surface of the cylinder holding portion (12) is in contact with the side surface of the three-dimensional cylinder (C).

4. A method for manufacturing a cylindrical container includes a paper supply step, a cylindrical forming step, a1 st sealing step, a content filling step, and a2 nd sealing step;

a first closing step of closing one opening of the tube main body;

a content loading step of loading a content into the cartridge main body;

in the 2 nd closing step, the other opening of the tube main body is closed.

5. The method of manufacturing a cylindrical container according to claim 4, wherein at least one of the 1 st closing step and the 2 nd closing step includes a closing member attaching step of attaching a closing member to the opening of the cylindrical body and closing the opening.

6. The method of manufacturing a cylindrical container according to claim 5, wherein the closing member attaching step includes a closing member fitting step of fitting a closing member into an opening end portion surrounding the opening of the cylindrical main body to close the opening.

7. The method of manufacturing a cylindrical container according to claim 5 or 6, wherein at least one of the 1 st closing step and the 2 nd closing step includes a closing member joining step of joining the closing member to the cylindrical main body after the closing member attaching step.

8. The method of manufacturing a tubular container according to any one of claims 4 to 6, wherein the web supplied in the web supply step has a corner fold line (c) and 2 fold lines (a, b) facing each other, and is folded at the 2 facing fold lines (a, b) to be in a flat state, and in the tube forming step, the web is bulged to form a tube main body having 2 openings, and the tube main body is formed with a corner portion (d) along the corner fold line (c).

9. The method of manufacturing a cylindrical container according to any one of claims 4 to 6, wherein the web supplied in the web supply step is folded at 2 folds (a, b) facing each other to be in a flat state; the above-mentioned tube forming process includes: preparing a mold forming step, a surrounding step, a step of raising a web, and a step of forming a tube main body;

preparing a forming mold having an inner mold surface surrounding the outer surface of the cylinder main body, the forming mold being divided into 2 or more mold parts having forming surfaces, the forming surfaces being combined to form the inner mold surface when the mold parts are combined;

in the surrounding step, the divided mould parts surround the 2 opposite folds (a, b) and the outer surface of the flat paper tube;

in the step of raising the web, the divided mold portions are formed as the mold inner surfaces, the mold portions are brought close to the web, 2 of the mold portions are pressed against 2 opposite folding lines (a, b), respectively, and the 2 opposite folding lines (a, b) of the web are brought close to each other to raise the web;

10. The method of manufacturing a cylindrical container according to claim 9, wherein the web supplied in the web supply step has 2 side plates facing each other, which are connected by the 2 facing folds (a, b), and the tube forming step has a separation step of separating the 2 side plates by pulling the 2 side plates outward, respectively.

11. A cylindrical container having a cylindrical body (1401) formed of a cylindrical paper, the cylindrical paper being folded at 2 folds (a, b) facing each other to be flat, and formed in a cylindrical shape when the 2 folds (a, b) facing each other are brought close to each other to be expanded; the above-mentioned tube body (1401) has 2 openings, these 2 openings are closed;

further, the cartridge further comprises closing members (D, E) fitted into the 2 openings of the cartridge body (1401).

12. The cylindrical container according to claim 11, wherein the web has the 2 facing folds (a, b) and the corner fold (c), and when the web is formed into a cylindrical shape by being expanded from a flat state and formed into a cylindrical body (1401), the cylindrical body (1401) is formed with the corner (d) along the corner fold (c).

13. The cylindrical container according to claim 11, wherein the cylindrical container has a base portion (1402) and a lid portion (1403), the base portion (1402) and the lid portion (1403) are connected by weakened portions (1404a, 1404b), the lid portion (1403) is freely openable and closable after being separated by the weakened portions (1404a, 1404b), and when the lid portion (1403) is opened, the inside of the cylindrical container is communicated with the outside.

14. The container of claim 13, further comprising a positioning portion (1405) for positioning the lid portion (1403) in the closed position.