JP2010167494A - Method and system for manufacturing can body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a can body which can be displayed in such a manner that a mark on the can body is oriented in a predetermined direction even when the can body is placed vertically in a display device with the mark oriented in a random direction. <P>SOLUTION: A container 20 comprises a bottom 21 formed of a disk-shaped member having a first concave part 212a and a second concave part 212b. The container 20 further has a first identification mark 23a and a second identification mark 23b that distinguish trade names and trade marks from other commodities on the particular places of a cylindrical body forming a side part 22. The first concave part 212a can be formed in conjunction with the formation of the disk-shaped member, for example, in a punching step. In a fixation step, the cylindrical body and the disk-shaped member are positioned so that the first identification mark 23a in the cylindrical body and the first concave part 212a in the disk-shaped member have a predetermined positional relationship. Thereafter, the cylindrical body and the disk-shaped member are fixed to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a can body manufacturing method and a can body manufacturing system.

For example, in convenience stores, containers filled with beverages such as beverage cans and plastic bottles are placed on the display device in a vertical position and sold. And such a display apparatus is arrange | positioned in the state inclined, for example so that a container might move ahead of a display case with dead weight of the container itself. When one container on the near side (front row) is extracted, the subsequent container moves to the near side by its own weight.
Here, a plastic flat plate, for example, is provided at a place where the container of the display device is placed because of the good sliding property of the container. In recent years, display devices in which a large number of rotatable rollers are arranged are on the market (for example, see Patent Document 1). In addition, the container is generally refilled from the rear side of the display device, but the container can be loaded from the front side, and the container moved to the back side is moved to the front side again and displayed. A display device has also been proposed (see, for example, Patent Document 2). That is, a display device has been proposed in which a container thrown in from the front side makes a U-turn and returns. Further, as a container, a can in which inner concave portions and vertical ribs are alternately formed in a circumferential direction on an inner peripheral wall of an annular convex portion formed on a can bottom has been proposed (see, for example, Patent Document 3). ).

  By the way, the outer surface of the container is provided with a mark for distinguishing it from other products such as a product name and a trade name, and it is difficult to identify the product if the mark is not suitable for the purchase direction of the purchaser. , The appearance at the time of display of the product becomes worse. For this reason, it is preferable that the container to be displayed is oriented in a predetermined direction such as the front side.

  As the prior art described in the publication, on the top surface of the inclined shelf on which the container is placed, a bar-shaped guide ridge is provided in the inclination direction of the shelf, and the bottom of the container is directly below and the surface with the mark attached There has been proposed a display method in which a concave fitting portion is provided that connects directly below the opposite surface, and the container is displayed using the guide protrusion and the concave fitting portion (see, for example, Patent Document 4). In this display method, the concave fitting portion is fitted to the guide ridge in a posture in which the mark faces the front side, and a plurality of containers are arranged in the front-rear direction. As a result, the container is displayed with the mark facing forward.

JP-A-11-155701 US Pat. No. 6,502,408 JP 2000-211162 A JP 2006-288676 A

  In Patent Document 4, the concave fitting portion is fitted to the guide ridge and the container is displayed, so that the mark can be reliably directed forward. However, in such an invention, when the container is displayed on the display shelf, the container supplier needs to fit the concave fitting portion to the guide protrusion every time the container is installed in the display device. Work becomes complicated. In addition, when the mark is formed only at one location of the container, there is a concern that a display error may occur in which the mark is displayed in the state of facing backward. In addition, in a store that sells a large amount of beverages such as this convenience store, the work of throwing in a uniform orientation becomes very large.

  Therefore, the inventors are examining a technique for forming a convex portion or a concave portion on the outer peripheral surface or bottom of the container and stopping the rotating container with the convex portion or the concave portion so that the mark is directed in a predetermined direction. However, when the container is manufactured in a state where the position of the mark is not related to the position of the convex portion or the concave portion, the mark cannot be directed in the intended direction. For example, in the manufacturing process of a three-piece can, the bottom plate serving as the bottom is fixed to the tubular body serving as the trunk, but for example, the bottom plate having the convex portion or the concave portion is simply attached to the cylindrical body. Just fixing it makes it difficult to turn the mark in the intended direction.

  In the system applied to the present invention, the container is appropriately rotated in the moving step from the first position to the second position, and after the container moves to the second position, the mark of the container is directed in a specific direction. It is a display system that lets you. Moreover, the manufacturing method of the can body to which the present invention is applied is to fix the can body before the contents are filled by fixing a lid member having a convex portion or a concave portion to the cylindrical body to which the mark is attached. A method for manufacturing a can body, the positioning step for positioning the cylindrical body and the lid member so that the mark and the convex portion or the concave portion have a predetermined positional relationship, and the cylindrical body and the lid A fixing step of fixing the member.

  Here, the convex part or the concave part can be characterized in that it is used for stopping the cylindrical body rotating in the circumferential direction and directing the mark in a specific direction. In addition, a lid member forming step of forming a lid member using a mold is further provided, the mold has a portion corresponding to the shape of the convex portion or the concave portion, and the convex portion or the concave portion is a mold for forming the lid member. It is characterized by being formed when the lid member is formed by the mold. Furthermore, a lid member forming step for forming the lid member and an unevenness forming step for forming a convex portion or a concave portion using a resin material are further provided. In the lid member forming step, a base material constituting the lid member is provided. A coating process for applying a coating and a heating process for performing a heat treatment on the base material coated in the coating process are included, and the formation of the convex portion or the concave portion by the irregularity forming step is performed after the heat treatment is performed. It can be characterized that it is done.

  From another point of view, the method of manufacturing a can body to which the present invention is applied includes a cylindrical body marked with a mark and a lid member fixed to the cylindrical body before the contents are filled. A method of manufacturing a can body for manufacturing a body, wherein a fixing step of fixing a lid member to a cylindrical body, and after the lid member is fixed to the cylindrical body by the fixing step, a mark and a predetermined predetermined position And a concavo-convex forming step of forming a convex portion or a concave portion at a location having a relationship.

  Here, in the concavo-convex forming step, a convex portion or a concave portion can be formed by attaching a member separately. Moreover, in the uneven | corrugated formation process, while the molten resin material is adhered, a resin material is hardened and it can be characterized by forming a convex part or a recessed part. Further, after the lid member is fixed to the cylindrical body by the fixing process, it further includes an inspection process for inspecting the mark of the cylindrical body, and the formation of the convex part or the concave part by the unevenness forming process is performed in the inspection process. Can be characterized.

  In addition, when the present invention is regarded as a can body manufacturing system, the can body manufacturing system of the present invention fixes a lid member having a convex portion or a concave portion to a cylindrical body to which a mark is attached. A can body manufacturing system for manufacturing a can body before being filled with an object, wherein a cylindrical body and a lid member are positioned so that a mark and a convex portion or a concave portion have a predetermined predetermined positional relationship. Positioning means for fixing, and fixing means for fixing the cylindrical body and the lid member.

  From another point of view, the can manufacturing system to which the present invention is applied includes a cylindrical body with a mark and a lid member fixed to the cylindrical body before the contents are filled. A can manufacturing system for manufacturing a body, wherein a fixing means for fixing a lid member to a cylindrical body, and after the lid member is fixed to the cylindrical body by the fixing means, a mark and a predetermined predetermined position And a concavo-convex forming means for forming a convex portion or a concave portion at a location having a relationship.

  Even when the mark is placed in a random direction when displayed vertically on the display device, a can body that can be displayed in a predetermined direction can be manufactured.

The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing a schematic configuration of a display device according to an embodiment of the present invention.
As shown in FIG. 1A, the display device 30 according to the present embodiment forms a placing portion 31 on which a container 20 formed as a can and filled with a beverage is placed, and a movement path of the container 20. And a guide 32 for guiding the movement of the container 20. In addition, a regulation plate 34 that is formed in a transparent manner and disposed along one side of the placement portion 31 and stops the movement of the container 20 is provided.

As shown in FIG. 2B, the display device 30 is stored in a display case 10 installed in a convenience store, a supermarket, or the like. The display case 10 has a main part composed of a case main body 10A formed in a rectangular parallelepiped shape and a door 10B provided to be openable and closable with respect to the case main body 10A.
Here, the display device 30 is placed on a shelf (not shown) provided in the display case 10. At this time, the display device 30 is installed such that the side on which the restriction plate 34 is provided is positioned on the door 10B side. Moreover, it arrange | positions so that the side in which the control board 34 was provided may be located below rather than the side on which the control board 34 was provided. That is, the display device 30 is disposed in a state of being inclined downward from the rear side of the display case 10 toward the front side (extraction unit side) from which the container 20 is taken out.

  Here, the display case 10 in the present embodiment is provided with a door on the rear side (not shown), and the rear side can also be opened. And the container 20 is thrown into the display apparatus 30 from this back side. In other words, the container 20 is provided on the rear side of the display case 10 and the rear side of the display device 30. And the thrown container 20 moves on the mounting part 31 toward the door 10B side. That is, it moves toward the purchaser who purchases the container 20. In this specification, the door 10B side may be referred to as the front side (front), and the side opposite to the door 10B may be referred to as the rear side (rear). In addition, the width direction of the display case 10 (the direction orthogonal to the direction in which the container 20 moves) may be referred to as a horizontal direction or a width direction.

The display device 30 will be described in more detail.
FIG. 2 is a diagram illustrating the placement unit 31 of the display device 30. Here, FIG. 4A is a top view of the placement portion 31, and FIG. 4B is a side view of the placement portion 31.
As shown in FIG. 2A, the placement unit 31 is placed on the first roller unit 311 and the bottom (end) of the container 20 on the movement path formed by the guide 32 (not shown in the figure). A resistance applying portion 312 that contacts and applies sliding resistance (friction resistance) to the container 20. The placement unit 31 includes a rotation stopping mechanism 313 that is disposed between the first roller unit 311 and the resistance applying unit 312 and stops the rotation of the container 20 (details will be described later).
Here, the first roller portion 311, the resistance applying portion 312, and the rotation stopping mechanism 313 are arranged in parallel in the lateral direction. The placement unit 31 includes a second roller unit 314 that moves the container 20 further forward in front of the first roller unit 311, the resistance applying unit 312, and the rotation stopping mechanism 313.

The first roller portion 311 has a plurality of roll-shaped members 311 a provided so as to be able to rotate along the moving direction of the container 20. In addition, these roll-shaped members 311a are arranged along the moving direction (front-rear direction) of the container 20.
The resistance applying unit 312 can be configured by, for example, a rubber member. For the rubber member, for example, EPDM (ethylene-propylene rubber) can be used.
The second roller portion 314 has a plurality of roll-shaped members 314 a that are rotatably provided along the moving direction of the container 20. Here, the roll-shaped members 314 a are arranged along the moving direction of the container 20. The roll-shaped members 314a are arranged in two rows in the width direction. Further, each roll-shaped member 314 a is formed wider than the roll-shaped member 311 a in the first roller portion 311.

  The rotation stop mechanism 313 is provided with a belt member 313a that is formed in an endless shape and can be circulated as shown in FIG. The rotation stop mechanism 313 includes a first tension roll 313b and a second tension roll 313c that are rotatably provided and stretch the belt member 313a from the inside. Further, a plurality of moving members 313d are provided which are fixed to the surface of the belt member 313a and arranged side by side along the moving direction of the belt member 313a, and circulate and move in accordance with the movement of the belt member 313a. Further, a plurality of protrusions 313e are provided at predetermined intervals in the moving direction of the belt member 313a and projecting from the surface of the moving member 313d. Here, the protrusion 313e is provided so as to protrude to the container 20 side from the contact position between the lowermost end portion of the container 20 to be placed and the moving member 313d (mounting portion 31).

Next, the container 20 will be described.
FIG. 3 is a view when the container 20 is viewed from the bottom side.
In this embodiment, a so-called three-piece can is illustrated as the container 20. As shown in FIG. 1A, the container 20 has a bottom 21, a cylindrical side 22, and an upper lid 29 (not shown) having a tab (not shown) that is operated when a drinking mouth is formed. 1).
The bottom portion 21 is formed in a disc shape, and includes a fixed portion 21a fixed to the side portion 22 by so-called winding on the outer peripheral edge thereof. Moreover, it has the bottom part main body 21b inside the to-be-fixed part 21a. Here, the bottom portion 21 is deformed so that the bottom main body 21b is positioned on the inner side of the container 20 rather than the fixed portion 21a. In other words, the bottom portion 21 is in a state in which a portion of the bottom portion main body 21 b is recessed toward the inner side of the container 20.

  Further, the container 20 includes a first recess 212a and a second recess 212b formed by deformation in the bottom body 21b (in this specification, such a recess formed in the container 20 is simply Sometimes referred to as a recess 212). Here, the first concave portion 212a and the second concave portion 212b are arranged so as to face each other. In other words, the first recess 212 a and the second recess 212 b are arranged in a state where the phase is shifted by 180 ° in the circumferential direction of the container 20.

  Furthermore, the container 20 has a first identification mark 23a and a second identification mark 23b for distinguishing from other products such as a product name and a trade name at a specific portion of the side portion 22 (in this specification, it is noted that Hereinafter, it may be simply referred to as “identification mark 23”). Here, the first identification mark 23a and the second identification mark 23b may be the same or different. The first identification mark 23 a and the second identification mark 23 b are arranged in a state where the phase is shifted by 180 ° in the circumferential direction of the container 20.

  The relationship between the concave portion 212 and the identification mark 23 will be described. In the circumferential direction of the container 20, the first identification mark 23a and the first concave portion 212a are arranged with a phase shifted by 180 °. The second identification mark 23b and the second recess 212b are also arranged in a state where the phase is shifted by 180 °. In other words, the first identification mark 23a and the first recess 212a are formed with a predetermined predetermined positional relationship, and the second identification mark 23b and the second recess 212b are also set at a predetermined position. It is formed with a relationship. More specifically, the first identification mark 23a and the first recess 212a are arranged at different positions, and the second identification mark 23b and the second recess 212b are also arranged at different positions.

  More specifically, the first recess 212a is formed on the side opposite to the side where the first identification mark 23a is provided, and the second recess 212b is the side opposite to the side where the second identification mark 23b is provided. Is formed. Further, in this embodiment, a plurality of identification marks 23 are provided such as the first identification mark 23a and the second identification mark 23b, and concave portions (first concave portion 212a, second concave portion 212b corresponding to each of these identification marks are provided. ) Is provided.

In addition to the concave portion 212, for example, as shown in FIG. 5B, a protruding portion (convex portion) 213 formed by deformation with respect to the bottom portion 21 can be provided.
Furthermore, for example, when the molding of the bottom 21 is difficult, the protrusion 213 is not limited to the deformation of the bottom 21, and other members such as a resin piece, a metal piece, an adhesive, a sheet, a seal, etc., as shown in FIG. It can also be formed by attaching separately.
Further, as shown in FIGS. 2D and 2E, a raised portion 214 that rises from the bottom portion 21 is provided on the bottom portion 21 by, for example, applying an adhesive or attaching another member such as a seal. A portion that is relatively recessed by the raised portion 214 can be used as the recessed portion 212.

  The material of the container 20 is not particularly limited as long as it can be used for alcohols such as beer and soft drinks such as juice. For example, a metallic material such as steel can be used.

Next, operations of the display device 30 and the container 20 when the container 20 is placed on the placement unit 31 of the display device 30 will be described.
Here, FIG. 4 is a view showing the operations of the display device 30 and the container 20.
When the container 20 is placed on the rear side of the display device 30 as indicated by the solid line 4A in the figure, the fixed portion 21a (see FIG. 3A) contacts the protrusion 313e. As a result, a load acts on the rotation stop mechanism 313 from the container 20, and the moving member 313d in the rotation stop mechanism 313 moves forward. At this time, the right side of the container 20 in the drawing tends to move smoothly forward by the first roller portion 311, but the left side in the drawing is given resistance from the resistance applying portion 312, so that it moves forward. Movement is restricted.

  As a result, as indicated by the broken line 4B, the container 20 rotates clockwise (circumferential direction) while moving forward. That is, the resistance force that resists the moving force that the container 20 tries to move forward varies depending on the portion of the container 20, and the container 20 rotates. Specifically, the left and right resistance forces are different from each other at the center of gravity of the container 20, and the container 20 rotates.

  Thereafter, the protrusion 313e of the rotation stopping mechanism 313 enters the first recess 212a or the second recess 212b (see FIG. 3A) of the container 20. In other words, the first recess 212a or the second recess 212b and the protrusion 313e face each other. Thereby, rotation of the container 20 is stopped (restricted) (see the broken line 4C). Thereafter, when the container 20 reaches a predetermined position of the second roller portion 314, the container 20 and the protrusion 313e are brought into a non-contact state. Thereby, the container 20 is moved further forward by the second roller portion 314 (see the broken line 4D). In addition, although the example using the container 20 provided with the 1st recessed part 212a and the 2nd recessed part 212b was demonstrated in this figure, for example, the container 20 provided with the protrusion part 213 (refer FIG. 3 (B), (C)). ), The protrusion 313e and the protrusion 213 come into contact with each other, and the rotation of the container 20 is stopped.

  In the present embodiment, as indicated by a solid line 4A, for example, even when the container 20 is placed on the placement unit 31 with the first identification mark 23a facing rearward, the first identification mark is in the stage of reaching the front. 23a comes to face forward. For this reason, even if the container 20 is placed (inserted) with the first identification mark 23a not facing forward, the container 20 reaches the front side of the display case 10 (see FIG. 1B). At this time, the first identification mark 23a faces forward. That is, the first identification mark 23a faces forward even if the user who puts the container 20 into the display device 30 does not perform any special operation.

Further, another embodiment of the display device 30 and the container 20 will be described.
FIG. 5 is a view showing another embodiment of the display device 30 and the container 20.
5A shows a top view of the display device 30. FIG. FIG. 5B shows a state when the display device 30 is viewed from the front side together with the container 20. Further, FIG. 5C shows the operation of the container 20.

As shown in FIG. 5B, the container 20 in this embodiment has a groove-shaped recess 221 formed along a circumferential direction of the container 20 in a part of the side part 22. Here, the recess 221 and the identification mark 23 are in a state where the phases are shifted by 90 °.
Further, the guide 32 in the display device 30 is formed in a rod shape as shown in FIGS. Further, the placement portion 31 of the display device 30 is such that one guide 32 (right guide 32 in the drawing) side is positioned below the other guide 32 (left guide 32 in the drawing) side. It is arranged to be inclined.

  Here, the operation of the container 20 will be described with reference to FIG. The container 20 placed on the rear side of the display device 30 moves forward while being guided by the guide 32. At this time, a rotational force is applied to the container 20 from the guide 32. When the container 20 rotates, the guide 32 enters the recess 221 of the container 20, and the rotation of the container 20 is stopped (see reference numeral 22A). The container 20 moves (slides) forward while being guided by the guide 32. Thereby, the container 20 that has reached the take-out portion of the display device 30 is in a state in which the identification mark 23 faces frontward. The mounting portion 31 can be provided with a plurality of rotatable roll members.

Next, the manufacturing process (manufacturing system) of the container 20 will be described.
FIG. 6 is a diagram illustrating a manufacturing process of the container 20.
The manufacturing process of the container 20 in this embodiment includes a cylindrical body forming process 100, a bottom plate forming process 200, a fixing process 300, and an inspection process 400.

  The cylindrical body forming step 100 is a step of forming a cylindrical body that constitutes the cylindrical side portion 22. The cylindrical body forming process 100 includes a painting process 110, a first heating process 120, a printing process 130, a second heating process 140, a shearing process 150, and a welding process 160.

  In the painting step 110, painting is performed on one surface (the surface serving as the inner surface of the container 20) of a base material such as a steel plate or a tin plate. In the first heating step 120, the base material is heated, and the coating applied in the coating step 110 is baked. In the printing process 130, for example, a pattern including the identification mark 23 is printed on the other surface of the base material (the surface to be the outer surface of the container 20) by multicolor offset printing. In the second heating step 140, the substrate is heated and the design printed in the printing step 130 is baked.

  In the shearing process 150, the base material is sheared to form a rectangular plate member (blank material) having a pattern. In the welding process 160, a welding process is performed with respect to the plate member rounded in a forming process (cylindrical formation process) (not shown) and overlapped on both sides. Thereby, the cylindrical body which comprises the said side part 22 is formed. In addition, in this process, although the coating was given with respect to the surface used as the inner surface of the container 20, it may replace with coating and may affix a resin film, for example.

  On the other hand, the bottom plate forming step 200 is a step of forming a disk-shaped member that constitutes the bottom portion 21. The bottom plate forming process 200 includes a first painting process 210, a first heating process 220, a second painting process 230, a second heating process 240, and a punching process 250. In addition, the disk-shaped member which comprises the bottom part 21 can be grasped | ascertained as a cover member fixed to the one end side of the said cylindrical body, and closing the opening of this cylindrical body. The bottom plate forming process 200 can be regarded as a lid member forming process for forming the lid member.

  In the first painting step 210, painting is performed on one surface of a base material such as a steel plate or a tin plate. In the first heating step 220, the base material is heated and the coating applied in the first coating step 210 is baked. In the second painting step 230, the other surface of the substrate is painted. In the second heating step 240, the base material is heated and the coating applied in the second coating step 230 is baked. In the punching process 250, the base material that has passed through the second heating process 240 is punched using a mold to form a disk-shaped member (blank material). In this punching process 250, bending is performed to form a curl portion on the outer edge. Here, the curled portion is bent in the fixing step 300, and finally becomes the fixed portion 21a. By these steps, a disk-shaped member constituting the bottom portion 21 is formed.

  Then, the cylindrical body formed in the cylindrical body forming step 100 and the disk-shaped member formed in the bottom plate forming step 200 are conveyed to the fixing step 300 and fixed to each other in the fixing step 300. Specifically, after the disk-shaped member is disposed on one opening side of the cylindrical body, the disk-shaped member is subjected to a tightening process (bending process) by a tightening device that functions as a fixing means, and the outer edge portion of the disk-shaped member and the cylinder The open end of the body is fixed. Thereby, the can body which can be filled with a drink etc. is formed.

  Next, in the inspection process 400, the appearance and printing state of the can body are inspected, and any defective products are removed. In this inspection, an image sensor such as a CCD that captures a pattern printed on the can body and the pattern etc. satisfy a predetermined standard (for example, position, size, etc.) based on the image data acquired by the image sensor. Determination means configured by a computer for determining whether or not the inspection device is included. If the determination means determines that the standard is not satisfied, it is removed as a defective product. Further, the inspection process 400 is provided with a so-called light tester process, in which the presence or absence of holes is inspected and any defective products are removed. The cans that have passed the inspection are loaded on a pallet in a palletizer process (not shown). The can body is shipped to a beverage manufacturer or the like, and the beverage manufacturer or the like fills the beverage as the contents, and fixes the upper lid 29 (see FIG. 1) having a pull tab.

  FIG. 6 shows main processes, and an uncoiler process (not shown) for unwinding the coiled base material is provided before the coating process 110 and the first coating process 210. Further, after the welding process 160, a necker flanger process (not shown) is provided. In this necker flanger process, the diameter of the opening edge of the cylindrical body is reduced, and a flange used when the upper lid 29 (see FIG. 1) is attached is formed.

Next, a method for forming the concave portion 212, the protruding portion 213, and the concave portion 221 (unevenness forming step) will be described in detail.
The recesses 212 and the protrusions 213 shown in FIGS. 3A and 3B can be formed using a mold having a shape corresponding to the recesses 212 and the protrusions 213, for example. If it adds, the recessed part 212 and the protrusion part 213 can be formed using the metal mold | die which has the site | part corresponding to the shape of the recessed part 212 or the protrusion part 213, for example.

  More specifically, the concave portion 212 and the protruding portion 213 shown in FIGS. 3A and 3B can be formed when the disk-shaped member is formed in the bottom plate forming step 200, for example. More specifically, for example, the concave portion 212 and the protruding portion 213 can be formed when the disk-shaped member is formed using a mold in the punching step 250. More specifically, a die for punching the disk-shaped member is given a shape corresponding to the recess 212 and the protrusion 213, and when the disk-like member is punched, the recess 212 and the protrusion 213 are formed by this mold. can do. Note that the formation of the concave portion 212 and the protruding portion 213 by the mold is not limited to the punching process step 250, and can be formed outside the punching step 250. That is, it can be formed before the punching process 250 or after the punching process 250.

  Here, when the concave portion 212 and the protruding portion 213 are formed on the disk-shaped member in the bottom plate forming step 200, in the fixing step 300, the identification mark 23 in the cylindrical body and the concave portion 212 in the disk-shaped member have a predetermined positional relationship. The cylindrical body and the disk-shaped member are positioned so as to have More specifically, in the fixing step 300, for example, the identification mark 23 in the cylindrical body, the recess 212 in the disk-like member, and the like are detected by a sensor or the like. For example, positioning (positioning) is performed by rotating at least one of the cylindrical body and the disk-shaped member, and the cylindrical body and the disk-shaped member are fixed. Here, a sensor or the like for detecting the identification mark 23 or the like, a rotating mechanism for rotating at least one of the cylindrical body and the disk-shaped member, and the like can be regarded as positioning means for positioning the cylindrical body and the disk-shaped member. it can.

In addition, the detection of the recessed part 212 and the protrusion part 213 can be performed using the mechanical sensor which detects these by contacting the recessed part 212 and the protrusion part 213, for example. The detection of the recess 212 and the protrusion 213 can be performed by, for example, an image sensor such as a CCD, a computer that analyzes data acquired by the image sensor, or the like. The identification mark 23 can also be detected by, for example, an image sensor such as a CCD or a computer that analyzes data acquired by the image sensor.
Moreover, the said rotation of a cylindrical body can be performed by making the rotating roll-shaped member contact the outer peripheral surface of a cylindrical body, for example. The rotation of the disk-shaped member can be performed by, for example, providing a suction part that sucks the disk-shaped member and rotating the suction part.

  The formation of the recess 212 and the protrusion 213 using a mold may be performed after the fixing step 300 is completed. That is, after being assembled into a can body, it may be formed on the bottom 21 (disk-shaped member). In this case, for example, the can body is rotated and the identification mark 23 is detected in the same manner as described above. Based on the detection result, the can body is stopped with the identification mark 23 facing a predetermined direction. Then, while inserting a metal mold | die inside a can body, the recessed part 212 and the protrusion part 213 are formed with this inserted metal mold | die and the metal mold | die provided in the outer side of the can body.

  In the above, positioning (positioning) is performed by detecting the identification mark 23. For example, in the printing step 130, an identification mark having a predetermined positional relationship with the identification mark 23 is printed, and this is performed. Positioning may be performed by detecting the identification mark. Further, for example, when a bar code having a predetermined positional relationship with the identification mark 23 is included in the symbol printed in the printing process 130, the bar code is detected using an existing bar code reader or the like and positioned. May be performed. Further, in the above, positioning is performed by detecting the concave portion 212 and the protruding portion 213. However, a step of printing an identification mark having a predetermined positional relationship with the concave portion 212 and the protruding portion 213 is provided. You may detect and position.

  Next, a method for forming the projecting portion 213 illustrated in FIG. The protrusion 213 shown in the figure is formed by, for example, melting a thermoplastic resin material typified by an epoxy resin and attaching the molten resin material to the disk-shaped member (bottom portion 21). Can be done.

More specifically, the protruding portion 213 shown in FIG. 3C can be formed in the bottom plate forming step 200, for example. More specifically, after the disk-shaped member is formed in the punching process 250, the molten resin can be formed on the disk-shaped member.
In addition, although formation of the protrusion part 213 by a resin material can also be performed before the 1st heating process 220 or the 2nd heating process 240, for example, in this case, the heating in the 1st heating process 220 or the 2nd heating process 240 The protrusion 213 may be melted or deformed by the processing. For this reason, it is preferable to form the protrusions 213 made of a resin material after the second heating step 240. Note that it is naturally possible to form the protruding portion 213 using a material that does not melt or deform even when heat treatment is performed.

When the protruding portion 213 is formed in the bottom plate forming step 200, as in the above, in the fixing step 300, the identification mark 23 in the cylindrical body and the protruding portion 213 in the disk-shaped member have a predetermined positional relationship. A cylindrical body and a disk-shaped member are positioned.
Further, the formation of the protruding portion 213 by the resin material may be performed after the fixing process 300 is completed. That is, after being assembled into a can body, it may be formed on the bottom 21 (disk-shaped member). In this case, the can body is rotated and, for example, the identification mark 23 is detected. Based on the detection result, the can is stopped with the identification mark 23 facing a predetermined direction. Thereafter, the molten resin is adhered to the bottom 21 (disk-shaped member).

In addition, the protrusion part 213 by a resin material can be formed, for example with the apparatus shown in FIG.
FIG. 7 is a view showing an attaching device for attaching a molten resin. Here, (A1) in the figure is a diagram showing the overall configuration of the adhesion apparatus, and (A2) is a figure when the adhesion apparatus is viewed from an arrow 10E in (A1).
The attachment device 600 as an example of the unevenness forming means includes a disk-shaped contact member 610 disposed in contact with a disk-shaped member (bottom portion 21) via a cutting cutter 640 described later, and a center of the contact member 610 formed in a cylindrical shape. A support member 620 that is connected to the contact portion and supports the contact member 610, and a cutting cutter 640 that cuts the cylindrical resin material 630. Here, the cutting cutter 640 is formed in a disc shape, and is disposed closer to the disc-like member than the contact member 610. The cutting cutter 640 includes a first insertion port 641 and a second insertion port 642 into which the resin material 630 is inserted. Further, the attachment device 600 includes a cutter support member 650 that is connected to the center of the cutting cutter 640 and supports the cutting cutter 640. Here, the cutter support member 650 is disposed inside the support member 620.

  Further, the attachment device 600 includes a rotation mechanism (not shown) that rotates the cutting cutter 640 in the circumferential direction of the contact member 610 (see arrow 10B in the drawing). The contact member 610, the support member 620, the cutting cutter 640, and the cutter support member 650 are provided with an advancing / retreating mechanism (not shown) that makes the disk-like member approach and separate (see arrow 10C in the figure). In addition, an advancement mechanism (not shown) that advances the resin material 630 toward the contact member 610 by a predetermined amount is provided.

The contact member 610 is formed in a disk shape, and a surface facing the disk member is shaped to follow the disk member. Further, the contact member 610 includes a first through hole 611 and a second through hole 612 into which the resin material 630 is inserted.
The cutting cutter 640 is also formed in a disc shape, and the surface facing the disc-like member is shaped to follow this disc-like member. Moreover, the cutting cutter 640 has the 1st insertion port 641 and the 2nd insertion port 642 as mentioned above. The cutting cutter 640 is circumferentially positioned by a control unit (not shown) when the resin material 630 is advanced by the advance mechanism. Specifically, the positioning is performed so that, for example, the first insertion port 641 and the first through hole 611 overlap, and for example, the second insertion port 642 and the second through hole 612 overlap. By this positioning, the resin material 630 can advance to the disk-shaped member side, and the resin material 630 can contact the disk-shaped member. The cutting cutter 640 cuts the resin material 630 by rotating.

Here, in the adhesion apparatus 600 in this embodiment, the contact member 610 is heated by a heating source (not shown). In this state, the contact member 610 and the cutting cutter 640 advance toward the disk-like member (bottom portion 21) by the advance / retreat mechanism. At this time, the cutting cutter 640 is positioned as described above by the rotation mechanism.
Thereafter, the resin material 630 is inserted into the first through hole 611, the second through hole 612, the first insertion port 641, and the second insertion port 642. Next, the contact member 610 and the cutting cutter 640 are retracted from the disk-like member by the advance / retreat mechanism. Accordingly, the contact member 610 and the cutting cutter 640 are separated from the disk-shaped member, and the resin material 630 in a semi-molten state protrudes from the contact member 610 toward the disk-shaped member. Next, the cutting cutter 640 rotates, the protruding resin material 630 is cut, and the resin material 630 adheres to the disk-shaped member. Thereafter, the resin material 630 is cured, and a protruding portion 213 as shown in FIG. 3C is formed.

The protrusion 213 can also be formed, for example, by providing a discharge portion such as a nozzle and discharging molten resin from the discharge portion.
Further, the protruding portion 213 can be formed by placing a resin with an apparatus similar to the above-described attaching apparatus 600 after placing an adhesive, regardless of the thermoplastic resin (melting of the resin material). In that case, the resin material 630 is not limited to a rod-shaped material, and for example, as shown in FIG. In this case, the cutting process of the resin material 630 becomes easier. Also, as shown in FIG. 2B2, the resin material 630 is divided into sizes corresponding to the protrusions 213 in advance, and the resin material 630 is sequentially introduced into the first through hole 611 and the second through hole 612. May be. In this case, the cutting process of the resin material 630 can be omitted. In addition, the cross section of the resin material 630 is not limited to a circle, and may be a triangle shape, a C shape, a rectangular shape, or the like, as shown in FIGS.

  Although a detailed description is omitted, the formation of the concave portion 212 shown in FIGS. 3D and 3E can be performed in the same manner as the case where the protruding portion 213 is formed of the resin material 630. That is, for example, it can be formed in the bottom plate forming process 200. Moreover, you may perform after completion | finish of the fixing process 300 not only in the baseplate formation process 200. FIG. That is, after being assembled into a can body, it may be formed on the bottom 21 (disk-shaped member). In addition, formation of the recessed part 212 (formation of the rising part 214) can be performed by attaching the molten resin material 630 as mentioned above. Further, for example, it can be formed by sticking a seal having the shape of the raised portion 214.

Next, a method for forming the recess 221 illustrated in FIG.
The concave portion 221 shown in the figure can be formed by using a mold for the cylindrical body formed by the welding process 160, for example. More specifically, for example, a mold having a shape corresponding to the concave portion 221 is disposed inside and outside the cylindrical body, and the cylindrical body can be pressed by this mold.

  Incidentally, in order to turn the identification mark 23 forward in the display device 30 (see FIG. 5A), it is necessary that the identification mark 23 and the recess 221 have a predetermined positional relationship as described above. For this reason, similarly to the above, the cylindrical body is rotated, the identification mark 23 is detected, and the cylindrical body is stopped based on the detection result (the cylindrical body is positioned). Thereafter, the concave portion 221 is formed using the mold. Similarly to the above, the cylindrical body may be stopped based on the detection result of the identification mark or the barcode. The formation of the recess 221 may be performed after the can body is formed in the fixing step 300.

  In addition, the recessed part 212, the protrusion part 213, and the recessed part 221 which were demonstrated above can also be formed in the test process 400. FIG. In the inspection process 400, the moving speed of the can body is lower than that of other processes due to processing contents. For this reason, it is easier to form the recesses 212 and the like than when the recesses 212 and the like are formed in other steps.

  Further, in the inspection process 400, as described above, an image sensor such as a CCD and a determination unit that determines whether or not a design or the like satisfies a predetermined standard based on image data acquired by the image sensor. An inspection device is provided. Here, in order to form the concave portion 212 and the like, an imaging element such as a CCD for detecting the identification mark 23 and the like is required for positioning as described above. However, the imaging element is already included in the inspection process 400 in the present embodiment. Is provided. Therefore, in the inspection process 400, the identification mark 23 can be detected without providing a separate CCD or the like.

  In the above manufacturing process, the description has been made on the assumption that one processing apparatus is provided for each process. However, for example, in a process with a processing speed slower than other processes such as the inspection process 400, a plurality of apparatuses are provided in parallel. Processing may be performed. In the above description, the design including the identification mark 23 is formed by printing. However, for example, a design on which the film on which the design is printed is wound around the outer peripheral surface of the container 20 may be formed. Moreover, a design can also be formed by giving an unevenness | corrugation to the outer peripheral surface of the container 20 using a metal mold | die, a resin mold, etc., for example.

It is the figure which showed schematic structure of the display apparatus which concerns on embodiment of this invention. It is a figure explaining the mounting part of a display apparatus. It is a figure at the time of seeing a container from the bottom side. It is the figure which showed operation | movement of a display apparatus and a container. It is the figure which showed other forms of the display apparatus and the container. It is the figure which showed the manufacturing process of the container. It is the figure which showed the adhesion apparatus which adheres molten resin.

DESCRIPTION OF SYMBOLS 20 ... Container, 21 ... Bottom part, 23 ... Identification mark, 200 ... Bottom plate formation process, 210 ... First coating process, 212 ... Recessed part, 213 ... Projection part, 220 ... First heating process, 221 ... Recessed part, 230 ... Second Painting step, 240 ... second heating step, 300 ... fixing step, 400 ... inspection step

Claims (10)

A cylindrical body with a mark attached thereto, a lid member having a convex part or a concave part is fixed, and a can body manufacturing method for manufacturing a can body before being filled with contents,
A positioning step of positioning the cylindrical body and the lid member so that the mark and the convex portion or the concave portion have a predetermined positional relationship determined in advance;
A fixing step of fixing the cylindrical body and the lid member;
A method for producing a can body including   2. The method for manufacturing a can according to claim 1, wherein the convex portion or the concave portion is used for stopping the cylindrical body rotating in the circumferential direction and directing the mark in a specific direction. Further comprising a lid member forming step of forming the lid member using a mold;
The mold has a portion corresponding to the shape of the convex portion or the concave portion,
The method for manufacturing a can according to claim 1 or 2, wherein the convex portion or the concave portion is formed when the lid member is formed by the mold that forms the lid member. A lid member forming step for forming the lid member;
An unevenness forming step of forming the convex portion or the concave portion using a resin material,
The lid member forming step includes a painting step for coating the base material constituting the lid member and a heating step for performing a heat treatment on the base material coated in the painting step. ,
The method for manufacturing a can body according to claim 1 or 2, wherein the formation of the convex portion or the concave portion by the unevenness forming step is performed after the heat treatment is performed. A can body manufacturing method for manufacturing a can body having a cylindrical body with a mark and a lid member fixed to the cylindrical body before the contents are filled,
A fixing step of fixing the lid member to the cylindrical body;
After the lid member is fixed to the cylindrical body by the fixing step, a concavo-convex forming step of forming a convex portion or a concave portion at a place having a predetermined positional relationship with the mark,
A method for producing a can body including   6. The method for manufacturing a can body according to claim 5, wherein in the unevenness forming step, the convex portion or the concave portion is formed by attaching a member separately.   6. The method for manufacturing a can according to claim 5, wherein, in the unevenness forming step, the molten resin material is adhered and the resin material is cured to form the convex portion or the concave portion. After the lid member is fixed to the cylindrical body by the fixing step, further includes an inspection step of inspecting the mark of the cylindrical body,
The method for manufacturing a can according to any one of claims 5 to 7, wherein the formation of the convex portion or the concave portion by the unevenness forming step is performed in the inspection step. A can body manufacturing system for fixing a lid member having a convex portion or a concave portion to a cylindrical body with a mark, and manufacturing a can body before the contents are filled,
Positioning means for positioning the cylindrical body and the lid member so that the mark and the convex portion or the concave portion have a predetermined positional relationship determined in advance;
Fixing means for fixing the cylindrical body and the lid member;
Can body manufacturing system. A can body manufacturing system for manufacturing a can body including a cylindrical body with a mark and a lid member fixed to the cylindrical body before the contents are filled,
Fixing means for fixing the lid member to the cylindrical body;
After the lid member is fixed to the cylindrical body by the fixing means, the concave-convex forming means for forming a convex portion or a concave portion at a location having a predetermined positional relationship with the mark,
Can body manufacturing system.

Images