WO2022065003A1 - 金属容器の製造方法、金属容器の製造装置、及び、金属容器 - Google Patents
金属容器の製造方法、金属容器の製造装置、及び、金属容器 Download PDFInfo
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- WO2022065003A1 WO2022065003A1 PCT/JP2021/032551 JP2021032551W WO2022065003A1 WO 2022065003 A1 WO2022065003 A1 WO 2022065003A1 JP 2021032551 W JP2021032551 W JP 2021032551W WO 2022065003 A1 WO2022065003 A1 WO 2022065003A1
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- sided bag
- jigs
- sided
- metal container
- parallel plate
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- 239000002184 metal Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000005452 bending Methods 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- 210000005069 ears Anatomy 0.000 claims 2
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
- B21D26/025—Means for controlling the clamping or opening of the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/52—Making hollow objects characterised by the use of the objects boxes, cigarette cases, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
Definitions
- the present invention relates to a method for manufacturing a metal container, a device for manufacturing a metal container, and a metal container.
- Patent Document 1 there is known a method of performing deep drawing by sandwiching and fixing the peripheral end portion of a metal plate material such as stainless steel and pushing the central portion with a punch (see, for example, Patent Document 1).
- a hollow container having a vacuum insulation core material such as powder inside.
- a hollow container can be manufactured by combining two plate materials formed by the deep drawing process described in Patent Document 1.
- the metal plate being molded since the metal plate being molded is locally stretched, the metal plate may be torn due to the stretching.
- the present invention has been made to solve such a problem, and an object thereof is a metal capable of suppressing tearing due to local elongation of a metal plate when forming a container from a four-sided bag. It is an object of the present invention to provide a method for manufacturing a container and a metal container manufacturing apparatus, and to provide a metal container manufactured by the manufacturing method or the manufacturing apparatus.
- a first step of forming a metal plate into a substantially flat square bag, and one surface and the other surface of the four-sided bag formed in the first step are first.
- the first and second parallel plate jigs for the second step sandwiched by the second parallel plate jig and the four-sided bag sandwiched between the first and second parallel plate jigs in the second step.
- the metal container manufacturing apparatus is a metal container manufacturing apparatus provided with first and second parallel plate jigs that sandwich one side and the other side of a substantially flat four-sided bag formed of a metal plate.
- the first and second parallel plate jigs can hold the four-sided bag, and in the process of pressurizing the inside of the four-sided bag to expand the volume space inside the four-sided bag, the four-sided bag Maintain contact with one side and the other.
- the metal container according to the present invention is a substantially quadrangular pyramid or a substantially rectangular parallelepiped metal container, and has two square-shaped top plates formed as one surface of the container and the other surface facing the one surface. It has a plurality of side walls connecting the two top plates and a hypotenuse that approaches each other from the opposite vertices of the two top plates, and projects laterally or is folded along the plurality of side walls.
- a valley fold is formed at the boundary between the ear and the plurality of side walls, and the apex is defined as the center of rotation between the valley fold and the hypotenuse.
- One or more valley creases are formed.
- the present invention when forming a container from a four-sided bag, it is possible to suppress tearing due to local elongation of the metal plate.
- FIG. 1 (a) and 1 (b) are perspective views showing a metal container manufactured by the method for manufacturing a metal container according to an embodiment of the present invention
- FIG. 1 (a) shows a first metal container.
- FIG. 1 (b) shows a second metal container.
- FIG. 2 is an enlarged view of the periphery of the selvage portion shown in FIG. 1 (a).
- FIG. 3 is a perspective view showing a four-sided bag used for manufacturing a metal container.
- 4 (a) and 4 (b) are schematic configuration views showing a main part of the metal container manufacturing apparatus according to the present embodiment, FIG. 4 (a) is a plan view, and FIG. 4 (b) is a plan view. Is a side view.
- FIG. 5 (a) and 5 (b) are partially enlarged views showing the details of the second flap jig shown in FIG. 4, and FIG. 5 (a) shows the maximum protruding state of the wedge, and FIG. (B) shows the minimum protruding state of the wedge.
- 6 (a) and 6 (b) are perspective views showing the progress in the process of forming a container having a substantially rectangular parallelepiped shape, FIG. 6 (a) shows the first stage, and FIG. 6 (b) shows. It shows the second stage.
- 7 (a), 7 (b) and 7 (c) are perspective views showing a process of making a four-sided bag, FIG. 7 (a) shows a metal plate, and FIG. 7 (b) is a metal plate. The folded state is shown, and FIG.
- FIG. 7 (c) shows a four-sided bag.
- 8 (a), 8 (b), 8 (c) and 8 (d) are process diagrams showing a process of forming a substantially rectangular parallelepiped container from a four-sided bag
- FIG. 8 (a) is a process diagram.
- the stage in which the four-sided bag is sandwiched is shown, FIG. 8 (b) shows the first stage in which the inside is pressurized, FIG. 8 (c) shows the second stage in which the inside is pressed, and FIG. 8 (d) shows the container.
- Shows the completion stage of. 9 (a) and 9 (b) are perspective views showing other examples of the four-sided bag, FIG. 9 (a) shows the first example, and FIG. 9 (b) shows the second example.
- FIG. 10 is a plan view showing an auxiliary plate.
- FIG. 11 is an enlarged view of the periphery of the selvage portion according to the modified example.
- FIG. 1 (a) and 1 (b) are perspective views showing a metal container manufactured by the method for manufacturing a metal container according to an embodiment of the present invention, and FIG. 1 (a) shows a first metal container. Shown, FIG. 1 (b) shows a second metal container.
- the metal container C manufactured in the present embodiment is, for example, a container C1 having a substantially rectangular parallelepiped shape, and has a rectangular shape formed as one surface of the container C1 and the other surface facing the other surface. It includes two top plates TB, a plurality of side wall HPs connecting the two top plates TB, and a plurality of ear portions D protruding from the four corners of the container C1 in the process of manufacturing the same. Further, a seam welded portion SW is formed at the end portion on the long side LS side. On the other hand, the end portion on the short side SS side (intermediate portion of the short side SS) orthogonal to the long side LS is an edge side E that has not been welded or the like.
- the metal container C manufactured in the present embodiment is, for example, a container C2 having a substantially double quadrangular pyramid shape.
- the double quadrangular pyramid is a connection between the bottom sides of a quadrangular frustum having no bottom surface.
- the container C2 includes two square top plates TB formed as one surface of the container C2 and other surfaces facing the other surface, and a plurality of side wall HPs connecting the two top plates TB.
- a plurality of selvagements D protruding from the four corners of the container C2 in the process of its manufacture.
- a seam welded portion SW is formed at the end portion on the long side LS side.
- the end portion on the short side SS side orthogonal to the long side LS is also an edge side E which is not welded or the like.
- the seam welded portion SW may be formed on the short side SS side depending on the manufacturing method, or the seam welded portion SW may be formed on both the long side LS side and the short side SS side (four side side). May be formed.
- FIG. 2 is an enlarged view of the periphery of the selvage D shown in FIG. 1 (a).
- the selvage portion D has hypotenuses HY approaching each other from the opposite vertices V of the two top plates TB and protrudes laterally.
- the opposite means facing in the direction connecting one surface and the other surface.
- a valley-folded valley-folded portion VF is formed between the selvage D and the side wall HP.
- valley fold marks VT having the apex V as the rotation center are formed between the valley fold portion VF and the hypotenuse HY.
- the number of valley fold marks VT may be one.
- the valley fold mark VT is a place where the valley fold portion VF was in the past in the manufacturing process of the container C1, and a place where evidence of the valley fold in the past remains.
- FIG. 2 the periphery of one selvage D in FIG. 1A is shown, but the same applies to the selvage D at another location.
- the description is omitted, similarly, in the case of the container C2 having a substantially double quadrangular pyramid shape shown in FIG. A valley fold mark VT is formed. Further, the number of valley fold marks VT may be one.
- FIG. 3 is a perspective view showing a four-sided bag used for manufacturing the metal container C.
- the four-sided bag B has a substantially flat rectangular shape (for example, a stainless steel plate having a thickness of about 0.1 mm) MP (see FIG. 7 described later) formed by folding and welding. It is a bag member (square or rectangular). Further, the four sides of the four-sided bag B are in a closed state except for the opening described later.
- the four-sided bag B is formed with an opening (small hole) for internal pressurization. The inside of such a four-sided bag B is pressurized through the opening to expand the internal volume space. After the volumetric space is expanded, the opening is closed and the metal container C as shown in FIGS. 1 (a) and 1 (b) is manufactured.
- FIGS. 4A and 4B are schematic configuration views showing a main part of the manufacturing apparatus of the metal container C according to the present embodiment
- FIG. 4 (a) is a plan view
- FIG. 4 (b) is a plan view.
- the manufacturing apparatus 1 includes first and second parallel plate jigs 11 and 12.
- the first and second parallel plate jigs 11 and 12 are flat plates having a rectangular shape (substantially square or rectangular shape) in a plan view as shown in FIG. 4A.
- the second parallel plate jig 12 on the other side and the flap jig F described later are also the first parallel plate jigs on the one side. It has the same shape as 11 and the flap jig F.
- the first and second parallel plate jigs 11 and 12 are smaller than the area when the four-sided bag B is viewed in a plan view, and are housed inside the four sides of the four-sided bag B. It is designed to sandwich one side and the other side. Further, each side of the first and second parallel plate jigs 11 and 12 is parallel to the four sides of the four-sided bag B so as to sandwich one side and the other side of the four-sided bag B.
- the first and second parallel plate jigs 11 and 12 form the top plate TB of the metal container C.
- the manufacturing apparatus 1 is provided with a plurality of flap jigs F.
- the flap jig F sandwiches a four-sided region of a region sandwiched between the first and second parallel plate jigs 11 and 12, that is, the end side of the four-sided bag B, among one surface and the other surface of the four-sided bag B.
- the flap jig F is rotatable as shown by arrows A1 in FIGS. 4 (a) and 4 (b), and has a substantially rectangular parallelepiped shape on the side surface of the container C1 or a substantially double quadrangular pyramid shape. The slope of the container C2 of the above is formed.
- the flap jig F is initially in a state of being substantially parallel to the first and second parallel plate jigs 11 and 12, and is in a manufacturing process.
- the jig rotates from a substantially parallel state to a predetermined angle with respect to the parallel (see FIGS. 8 (a) to 8 (d) described later).
- the predetermined angle is 90 ° in the manufacturing apparatus 1 for manufacturing the container C1 having a substantially rectangular parallelepiped shape, and the predetermined angle is less than 90 ° in the manufacturing apparatus 1 for manufacturing the container C2 having a substantially rectangular parallelepiped shape.
- the flap jig F is configured to move to the center side of the four-sided bag B in the manufacturing process. Therefore, in the manufacturing process of the metal container C, the flap jig F moves to the center side of the four-sided bag B while rotating, and operates so as to fold the metal container C from the side.
- the first and second parallel plate jigs 11 and 12 are connected to the flap jig F via the link mechanism L. Therefore, the flap jig F operates so as to move toward the center side of the four-sided bag B while rotating in accordance with the operation in which the first and second parallel plate jigs 11 and 12 move in the directions away from each other. It will be.
- the flap jig F is formed so as to gradually fold the metal container C from the side as the space volume inside the four-sided bag B expands.
- the wedge W which will be described later, also operates in conjunction with the operations of the first and second parallel plate jigs 11 and 12 via the link mechanism L.
- the plurality of flap jigs F are the plurality of first flap jigs F1 that sandwich the two opposite sides of the four-sided region (two sides on the seam welded portion SW side in the present embodiment), and the remaining facing sides of the four-sided region.
- a plurality of second flap jigs F2 for sandwiching two sides (two sides on the edge side E side in the present embodiment) are provided.
- the first flap jig F1 has a trapezoidal shape in a plan view.
- the second flap jig F2 has a main body portion H having a rectangular shape in a plan view and wedges W on both end portions (that is, the corner portions side of the four-sided bag B) of the main body portion H. It is composed of.
- FIG. 5 (a) and 5 (b) are partially enlarged views showing the details of the second flap jig F2 shown in FIG. 4, and FIG. 5 (a) shows the maximum protruding state of the wedge W.
- FIG. 5B shows the minimum protruding state of the wedge W.
- the wedge W has a line segment portion W1 extending from the vertices V of the first and second parallel plate jigs 11 and 12 toward the side of the four-sided bag B on the second flap jig F2 side (that is, the edge side E). Have. In the manufacturing apparatus 1 of the metal container C, the wedge W moves the line segment portion W1 in the process of pressurizing the inside of the four-sided bag B and expanding the space volume inside.
- the wedge W has an angle ⁇ formed by the line segment portion W1 and the side of the four-sided bag B on the second flap jig F2 side (that is, the edge side E) from an acute angle to a right angle. It moves to the H side of the main body while rotating so as to approach.
- the rotation of the wedge W is controlled by an appropriate means (not shown).
- FIG. 6 (a) and 6 (b) are perspective views showing the progress in the process of forming the container C1 having a substantially rectangular parallelepiped shape, and FIG. 6 (a) shows the first stage, and FIG. 6 (b) shows. Indicates the second stage.
- the container C1 having a substantially rectangular parallelepiped shape is formed through the first step shown in FIG. 6A and the second step shown in FIG. 6B.
- the container C1 having a substantially rectangular parallelepiped shape is formed so as to fold while pressurizing the inside of the square bag B, so that the valley shown in FIG. 6 (a) is formed.
- a folded portion VF is formed.
- the valley fold portion VF shown in FIG. 6 (b) is formed.
- the angle ⁇ with respect to the edge side E is different. That is, when the container C1 is formed by folding the four-sided bag B, the angle ⁇ of the valley fold portion VF with respect to the edge side E changes.
- the manufacturing apparatus 1 of the metal container C according to the present embodiment more appropriately moves the container C1 by moving the line segment portion W1 of the wedge W according to the changing angle ⁇ as shown in FIG. 5 (b). It can be formed so as to be folded.
- the container C1 having a substantially rectangular parallelepiped shape has been described as an example, but the same applies to the case of creating a container C2 having a substantially quadrangular pyramid shape.
- FIG. 7 (a), 7 (b) and 7 (c) are perspective views showing the process of making the four-sided bag B, FIG. 7 (a) shows the metal plate MP, and FIG. 7 (b) shows the metal plate MP. The state in which the metal plate MP is folded is shown, and FIG. 7 (c) shows the four-sided bag B.
- a rectangular metal plate MP is prepared.
- the short sides MP1 of the rectangular metal plate MP are bent so as to be brought into contact with each other.
- the bent portion becomes the above-mentioned edge side E.
- the short side MP1s are butt-welded to each other to form a butt-welded portion BW.
- the side orthogonal to the edge side E is seam welded to form a seam welded portion SW.
- the metal plate MP is made into a substantially flat four-sided bag B.
- FIG. 8 (a), 8 (b), 8 (c), and 8 (d) are process diagrams showing a process of forming a container C1 having a substantially rectangular parallelepiped shape from a four-sided bag B, and FIG. 8 (a). ) Shows the stage in which the four-sided bag B is sandwiched, FIG. 8 (b) shows the first stage in which the inside is pressurized, and FIG. 8 (c) shows the second stage in which the inside is pressed. ) Indicates the completion stage of the container C1.
- the four-sided bag B is sandwiched between the first and second parallel plate jigs 11 and 12.
- the first and second parallel plate jigs 11 and 12 fit inside the four sides of the four-sided bag B, and the four sides of the four-sided bag B and the first and second parallel plate jigs 11 and 12 One side and the other side of the four-sided bag B are sandwiched so that each side of the bag B is parallel to each other.
- the flap jig F sandwiches the four-sided region of the region sandwiched by the first and second parallel plate jigs 11 and 12, that is, the end side of the four-sided bag B. More specifically, as shown in FIG. 4A, the two opposite sides of the four-sided region are sandwiched by the first flap jig F1, and the remaining two opposite sides of the four-sided region are sandwiched by the second flap jig F2. Insert it.
- the airbag AB is arranged between the upper wall UW of the manufacturing apparatus 1 and the like and the first parallel plate jig 11.
- the airbag AB presses the first parallel plate jig 11 and applies a reaction force (a force in the direction of suppressing the expansion) when the volumetric space expands.
- a reaction force a force in the direction of suppressing the expansion
- FIG. 8 (b) and FIG. 8 (c) in the process of expanding the volume space of the four-sided bag B, as shown in FIG. 5 (b), the line segment portion W1 of the wedge W is formed. It approaches the main body H while rotating. As a result, as shown in FIGS. 6 (a) and 6 (b), a valley fold portion VF corresponding to the size of the volumetric space is formed.
- volumetric space is further expanded, and as shown in FIG. 8D, a container C1 having a substantially rectangular parallelepiped shape is created.
- the flap jig F is not limited to sandwiching the four-sided area, and may sandwich only two or three sides of the four-sided area. This is also because a certain folding effect can be obtained.
- the contact state with the first and second parallel plate jigs 11 and 12 is maintained with respect to the four-sided bag B.
- the inside of the four-sided bag B is pressurized, and the volume space inside the four-sided bag B is expanded while increasing the distance between the first and second parallel plate jigs 11 and 12, so that the comparison is made on the end side.
- the inside of the four-sided bag B is pressurized while suppressing the relatively low-rigidity portion. It is possible to suppress tearing due to the elongation of a typical metal plate MP.
- the flap jig F is used to the slope portion of the substantially double quadrangular pyramid stand or. It can be made to form a lateral portion of a substantially rectangular parallelepiped. Moreover, since the flap jig F moves to the center side, the container can be formed by folding the four-sided bag B, and the metal container C can be formed while further suppressing tearing.
- the wedge W is operated so that the angle ⁇ formed by the line segment portion W1 and the edge side E approaches a right angle from an acute angle.
- the line segment portion W1 of the wedge W can be applied to the portion to be folded in the valley fold, and the metal container C is formed by further folding the four-sided bag B. And the possibility of tearing can be greatly reduced.
- a metal container. C can be shaped to match the first and second parallel plate jigs 11 and 12 and a plurality of flap jigs F, and can be a double quadrangular pyramid or a rectangular parallelepiped having a cleaner shape.
- the metal container C it is possible to obtain a metal container C based on the four-sided bag B in which tearing due to local elongation of the metal plate MP is suppressed.
- the manufacturing apparatus 1 of the metal container C has the flap jig F, but the present invention is not limited to this, and the flap jig F may not be provided.
- a step of sandwiching the four-sided bag B with the first and second parallel plate jigs 11 and 12 and a step of sandwiching the four-sided bag B with the flap jig F. Is performed at the same time, but the process is not limited to this, and the step of sandwiching the four-sided bag B by the first and second parallel plate jigs 11 and 12 may be performed first, or the four-sided by the flap jig F.
- the step of sandwiching the bag B may be performed first.
- the four-sided bag B is created by a process other than the process shown in FIGS. 7 (a) to 7 (c), such as superimposing two metal plate MPs having the same area and welding the peripheral portion thereof. May be good.
- the selvage D is formed when the container C is formed in the present embodiment, in order to facilitate the formation of the selvage D, (at least a part) of the two opposite sides of the four-sided bag B are formed. It is preferable that the rigidity is lower than the rigidity of the remaining two sides.
- the bending rigidity in the plane is high on the long side LS side where the seam welded portion SW is formed, and the bending rigidity in the plane is low on the short side SS side having the edge side E. It has become. Therefore, when the container C is manufactured from the four-sided bag B shown in FIG. 2, the selvage portion D is likely to be formed.
- FIG. 9 (a) and 9 (b) are perspective views showing another example of the four-sided bag B, FIG. 9 (a) shows the first example, and FIG. 9 (b) shows the second example. Is shown.
- FIG. 9A it is assumed that rectangular metal plates MPs having the same area are overlapped with each other and seam welded on four sides to form a seam welded portion SW to manufacture a four-sided bag B.
- notches N for reducing the width of the seam welded portion SW are provided on both ends of the seam welded portion SW on two opposite sides (short side SS side).
- the notch N is located at a distance corresponding to half the height of the container C finally manufactured from the end VM of the seam welded portion SW, or at a position closer to the end VM than from that position. Is formed in.
- the seam welded portion SW on the two opposing sides may be bent so as to be raised or lowered.
- the bent portion BE acts like the edge side E shown in FIG. 2, and the bending rigidity in the plane at the bent portion BE can be lowered to facilitate the formation of the selvage portion D.
- the second flap jig F2 is provided with the wedge W, but the present invention is not limited to this, and the wedge W may not be provided.
- the auxiliary plate AP shown in FIG. 10 may be provided.
- FIG. 10 is a plan view showing the auxiliary plate AP. As shown in FIG. 10, the auxiliary plate AP is stacked on the four-sided bag B, and is stacked so as to match the position where the valley fold portion VF is formed. In detail, a plurality of oval holes OV are formed in the auxiliary plate AP.
- the plurality of oval holes OV are changed from the end side to the center side of the auxiliary plate AP so that the angle ⁇ formed with the edge side E becomes large (that is, from an acute angle to a right angle).
- the auxiliary plate AP is reinforced in the vicinity of the edge side E, which has a lower bending rigidity in the plane than the seam welded portion SW, but is not reinforced in the portion of the oval hole OV. Therefore, for a part (the part of the oval hole OV), the bending rigidity in the plane is lower than that of the two sides having the seam welded portion SW.
- the metal container C is as shown in FIG. FIG. 11 is an enlarged view of the periphery of the selvage D according to the modified example.
- the selvage D may remain protruding laterally, but is preferably folded along the side wall HP as shown in FIG. This is because the shape of the metal container C can be made to be close to a substantially rectangular parallelepiped shape or a substantially double quadrangular pyramid shape. Further, if possible, it is preferable to fold the seam welded portion SW along the side wall HP when folding the selvage portion D.
- the selvage D is folded toward the front side along the side wall HP on the side having the edge side E, but the present invention is not limited to this, and the selvage portion D may be folded in the opposite direction.
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- Ceramic Engineering (AREA)
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- Containers Having Bodies Formed In One Piece (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Description
前記第1及び第2平行板治具は、前記四方袋を挟持可能であり、前記四方袋の内部を加圧して前記四方袋の内部における容積空間を拡大していく過程において、前記四方袋の一面及び他面との接触状態を維持する。
11 :第1平行板治具
12 :第2平行板治具
AB :エアバック
AP :補助板
B :四方袋
BW :突き合わせ溶接部
C :金属容器
C1 :略直方体形状の容器
C2 :略双四角錐台形状の容器
D :耳部
E :エッジ辺
F :フラップ治具
F1 :第1フラップ治具
F2 :第2フラップ治具
H :本体部
HP :側壁
HY :斜辺
L :リンク機構
LH :長円部
LS :長辺
MP :金属板
MP1 :短辺
OV :長円孔
S :ビス部
SP :スプリング
SS :短辺
SW :シーム溶接部
TB :天板
UW :上壁
V :頂点
VF :谷折り部
VT :谷折り痕
W :ウェッジ
W1 :線分部位
θ :角度
Claims (8)
- 金属板を略平面的な四方袋となるように形成する第1工程と、
前記第1工程において形成された前記四方袋の一面及び他面を第1及び第2平行板治具により挟む第2工程と、
前記第2工程において前記第1及び第2平行板治具に挟まれた前記四方袋に対して、前記第1及び第2平行板治具による接触状態を維持しつつ、前記四方袋の内部を加圧していき、前記第1及び第2平行板治具間の距離を広げながら前記四方袋の内部における容積空間を拡大していくことで、前記四方袋を略双四角錐台又は略直方体の容器とする第3工程と、
を備える金属容器の製造方法。 - 前記第1工程では、対向する2辺側の少なくとも一部において平面内の曲げ剛性を、残りの2辺側の平面内の曲げ剛性よりも低くした前記四方袋を形成する
請求項1に記載の金属容器の製造方法。 - 前記第2工程では、前記第1工程において形成された前記四方袋を平面視したときの面積よりも小さい四角形状の前記第1及び第2平行板治具により、前記四方袋の4辺よりも内側に収まり、且つ、前記四方袋の4辺と前記第1及び第2平行板治具の各辺とが平行となるようにして、前記四方袋の一面及び他面を挟み、
前記第1工程から前記第3工程までに間に実行され、前記四方袋の一面及び他面のうち、前記第1及び第2平行板治具が挟む領域それぞれの四方領域の少なくとも2方を、前記第1及び第2平行板治具と略平行の状態から当該平行に対して所定角度まで回動しつつ前記四方袋の中央側へ移動可能な複数のフラップ治具により挟む第4工程をさらに備え、
前記第3工程では、前記四方袋に対して、前記複数のフラップ治具による回動及び移動を伴う接触状態を維持しつつ、前記四方袋の内部を加圧していくことで、前記四方袋を略双四角錐台の斜面又は略直方体の側面を形成する
請求項1又は請求項2に記載の金属容器の製造方法。 - 前記第4工程では、前記複数のフラップ治具を構成する複数の第1フラップ治具と複数の第2フラップ治具とのうち、前記四方領域の対向する2方を前記複数の第1フラップ治具により挟み込み、前記四方領域の対向する残りの2方を前記複数の第2フラップ治具により挟み込む
請求項3に記載の金属容器の製造方法。 - 前記複数の第2フラップ治具は、前記四方袋の角部側において、前記第1及び第2平行板治具の各頂点から前記四方袋のうち各第2フラップ治具側の辺に向かって延びる線分部位を有したウェッジを備え、
前記第3工程では、前記四方袋の内部における容積空間を拡大していく過程で、前記線分部位と前記各第2フラップ治具側の辺とのなす角度が鋭角から直角に近づくように、前記ウェッジを動作させる
請求項4に記載の金属容器の製造方法。 - 前記第3工程では、前記第1及び第2平行板治具並びに前記複数のフラップ治具に対して、前記四方袋の内部の加圧による前記容積空間の拡大を抑える方向の力を付与する
請求項2から請求項5のいずれか1項に記載の金属容器の製造方法。 - 金属板によって形成された略平面的な四方袋の一面及び他面を挟む第1及び第2平行板治具を備えた金属容器の製造装置であって、
前記第1及び第2平行板治具は、平面視して前記四方袋の面積よりも小さい四角形状となっており、前記四方袋の4辺よりも内側に収まり、且つ、前記四方袋の4辺と前記第1及び第2平行板治具の各辺とが平行となるようにして前記四方袋を挟持可能であり、前記四方袋の内部を加圧して前記四方袋の内部における容積空間を拡大していく過程において、前記四方袋の一面及び他面との接触状態を維持する
金属容器の製造装置。 - 略双四角錐台又は略直方体の金属容器であって、
容器の一面及び前記一面に対向する他面として形成される四角形状の2枚の天板と、
前記2枚の天板を接続する複数の側壁と、
前記2枚の天板のうち対向する頂点同士から互いに近づく斜辺を有して側方に突出し又は前記複数の側壁に対して沿うように折り畳まれた複数の耳部と、を備え、
前記複数の耳部と前記複数の側壁との境界には谷折り部が形成されており、
前記谷折り部と前記斜辺との間には、前記頂点を回転中心とする1又は複数の谷折り痕が形成されている
金属容器。
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AU2021350928A AU2021350928A1 (en) | 2020-09-28 | 2021-09-03 | Method for manufacturing metal container, apparatus for manufacturing metal container, and metal container |
DE112021005069.9T DE112021005069T5 (de) | 2020-09-28 | 2021-09-03 | Verfahren zur Herstellung eines Metallbehälters, Vorrichtung zur Herstellung eines Metallbehälters, und Metallbehälter |
CN202180053477.4A CN115996801A (zh) | 2020-09-28 | 2021-09-03 | 制造金属容器的方法、制造金属容器的装置和金属容器 |
GB2302883.0A GB2613489A (en) | 2020-09-28 | 2021-09-03 | Method for manufacturing metal container, apparatus for manufacturing metal container, and metal container |
US18/173,745 US20230191473A1 (en) | 2020-09-28 | 2023-02-23 | Method for manufacturing metal container, apparatus for manufacturing metal container, and metal container |
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JP2020162436A JP7510319B2 (ja) | 2020-09-28 | 2020-09-28 | 金属容器の製造方法、及び、金属容器 |
JP2020-162436 | 2020-09-28 |
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JP2022055067A (ja) | 2022-04-07 |
GB2613489A (en) | 2023-06-07 |
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