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WO2018066309A1 - Récipient métallique et récipient métallique à couvercle - Google Patents

Récipient métallique et récipient métallique à couvercle Download PDF

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Publication number
WO2018066309A1
WO2018066309A1 PCT/JP2017/032591 JP2017032591W WO2018066309A1 WO 2018066309 A1 WO2018066309 A1 WO 2018066309A1 JP 2017032591 W JP2017032591 W JP 2017032591W WO 2018066309 A1 WO2018066309 A1 WO 2018066309A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal container
curled
opening
main body
convex curved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/032591
Other languages
English (en)
Japanese (ja)
Inventor
法夫 山内
細井　正宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TMC Japan Co Ltd
Original Assignee
TMC Japan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TMC Japan Co Ltd filed Critical TMC Japan Co Ltd
Publication of WO2018066309A1 publication Critical patent/WO2018066309A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • 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—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents

Definitions

  • the present invention relates to a metal container and a metal container with a lid.
  • a bottle used for a container such as a soft drink
  • a bottle can in which a cap that can be attached to and detached from the opening of the metal container is screwed, a wide-mouth container in which a lid is attached to the opening of the metal container, etc.
  • a cap that can be attached to and detached from the opening of the metal container is screwed
  • a wide-mouth container in which a lid is attached to the opening of the metal container, etc.
  • Patent Document 1 An example of such a metal container is disclosed in Patent Document 1.
  • the metal container currently disclosed by patent document 1 has the trunk
  • the outer peripheral surface of the trunk portion is provided with a locking groove that is recessed inward in the radial direction. And the front-end
  • an object of the present invention is to provide a metal container and a metal container with a lid that can effectively increase the rigidity against a load applied inward in the radial direction at the curled portion.
  • a metal container is a metal container having a bottomed cylindrical main body that is open at one end, and bulges radially outward from the main body.
  • a curl portion formed on the main body, the curl portion being connected to one end of the main body, having a side wall portion spaced from the main body, and a tip portion continuous to the side wall portion, The portion is bent so that the tip surface, the outer surface, or the inner surface is in contact with the inner surface of the side wall portion.
  • the curl portion is formed so as to bulge outward from the main body in the radial direction.
  • a side wall portion of the curl portion is connected to one end of the main body, and is arranged at a distance from the main body.
  • the curled portion has a front end portion that is continuous with the front end of the side wall portion and is bent so that the front end surface, the outer surface, or the inner surface is in contact with the inner surface of the side wall portion. Since it did in this way, when the front-end
  • the outer peripheral surface of the main body is provided with a locking groove that is recessed radially inward over the entire circumference, and the convex curved surface portion of the curl portion contacts the concave surface in the locking groove. It is preferable to contact. By doing in this way, the location in which the convex curved surface part of the curl part was provided in the locking groove is locked. For this reason, the movement of the portion of the curl portion is restricted. Accordingly, it is possible to suppress deformation when a load is applied to the curled portion.
  • the radius of curvature of the concave surface in the locking groove is greater than or equal to the radius of curvature of the convex curved surface portion of the curled portion. Furthermore, it is more preferable that the radius of curvature of the concave surface in the locking groove is equal to the radius of curvature of the convex curved portion of the curled portion.
  • the radius of curvature of the convex curved portion of the curled portion is R2
  • the thickness of the convex curved portion of the curled portion is t
  • the following expressions (1) and (2) are satisfied. preferable.
  • the thickness t of the curled portion is 0.2 mm or more and 0.6 mm or less
  • the thickness t is more preferably 0.3 mm or more and 0.5 mm or less.
  • the radius of curvature of the concave surface in the locking groove is R1
  • (3) 1.0 ⁇ R2 ⁇ R1 ⁇ 2.0 ⁇ R2 By setting the radius of curvature R1 of the locking groove to be in the range of 1 to 2 times the radius of curvature R2 of the curled portion, the curled portion can be appropriately locked in the locking groove.
  • the main body integrally includes a cylindrical neck portion and a cylindrical opening portion continuous with the neck portion, and the curled portion is continuous with one end of the opening portion.
  • the angle formed by the curved surface portion abuts on the outer peripheral surface of the opening and the direction in which the neck extends and the direction in which the opening extends is ⁇
  • the following expression (4) is satisfied. . (4) 20 degrees ⁇ ⁇ ⁇ 60 degrees
  • the angle ⁇ formed by the extending direction of the neck and the extending direction of the opening in contact with the curled part is 20 degrees or more and 60 degrees or less, a load is applied to the curled part.
  • the curl portion can be properly locked to the opening portion while suppressing deformation of the main body when applied.
  • the angle ⁇ is less than 20 degrees, when a load is applied to the curled portion, the curled portion moves downward and is easily deformed.
  • the angle ⁇ exceeds 60 degrees, the neck and the opening are more easily bent and deformed when a load is applied.
  • the main body includes a bottom, a cylindrical abdomen extending in one direction along the axis from the periphery of the bottom, a shoulder that gradually decreases in diameter in the one direction from the abdomen, A cylindrical neck having a smaller diameter than the abdomen extending in the one direction along the axis from the shoulder, and a cylindrical opening connected to the neck, are integrally formed, and the curl portion of the opening It is preferable that the curved surface portion of the curled portion is in contact with the outer peripheral surface of the opening portion.
  • a metal container with a lid includes the metal container and a lid attached so as to close an opening of the metal container containing a liquid. It is characterized by having. According to this invention, since it has the said metal container, two places, the front-end
  • FIG. 1 is a front view of a metal container with a lid according to an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining the vicinity of the lid of the metal container with a lid in FIG. 1, and shows the upper end of the lid and the metal container in a cross-sectional view.
  • FIG. 3 is an enlarged longitudinal sectional view of the vicinity of the cap portion of the metal container with lid of FIG. In the lower left circle of FIG. 3, the vicinity of the locking groove is shown enlarged.
  • a longitudinal sectional view means a sectional view along the vertical direction (the direction of the axis L in FIG. 1).
  • the radial direction refers to the radial direction of the main body (the direction perpendicular to the axis L in FIG. 1).
  • the metal container 1 with a lid of the present embodiment is a beverage container that contains a liquid beverage such as a soft drink or beer, and includes a metal container 10, a lid 30, have.
  • the metal container 10 is made of metal such as aluminum or aluminum alloy, for example.
  • the metal container 10 is formed in a bottomed cylindrical shape extending along the axis L.
  • the metal container 10 integrally has a main body 11 and a curled portion 17 (FIG. 2). Unless it is contrary to the objective of this invention, you may use metal materials other than the above, such as iron, for example.
  • the main body 11 is also called a trunk.
  • the main body 11 is formed in a bottomed cylindrical shape, and integrally includes a bottom portion 12, an abdominal portion 13, a shoulder portion 14, a neck portion 15 and an opening portion 16.
  • the abdomen 13 is formed in a cylindrical shape and extends upward along the axis L with a constant diameter from the periphery of the bottom 12.
  • the shoulder portion 14 is gradually reduced in diameter as it goes upward from the upper end of the abdominal portion 13.
  • the neck portion 15 is formed in a cylindrical shape having a smaller diameter than the abdominal portion 13 and extends upward from the shoulder portion 14. In the present embodiment, the neck portion 15 is gradually reduced in diameter more gradually than the shoulder portion 14 as it goes upward.
  • the opening 16 is formed in a cylindrical shape and continues to the upper end of the neck 15.
  • the opening 16 has a groove portion 16a and a tapered portion 16b.
  • the groove portion 16 a is provided with a locking groove 16 a 1 that is recessed radially inward over the entire circumference at a location near the neck portion 15.
  • the tapered portion 16b is connected to the upper end of the groove portion 16a and is formed in a cylindrical shape that gradually decreases in diameter as it goes upward.
  • the groove portion 16a is formed so that the longitudinal cross-sectional shape is an arc shape, and the inside of the locking groove 16a1 is formed to be a concave surface.
  • the curled portion 17 is formed by folding back so that the portion connected to the upper end of the main body 11 when the main body 11 is formed by extending a metal material is wound roundly outward in the radial direction.
  • the curled portion 17 is formed so as to bulge (that is, project) radially outward.
  • the curl portion 17 has a side wall portion 18 and a tip portion 19.
  • the side wall portion 18 is connected to the upper end of the opening 16 (one end of the main body 11) and is spaced from the opening 16.
  • the tip portion 19 is continuous with the tip 18 a of the side wall portion 18.
  • the front end portion 19 of the curled portion 17 is bent into a substantially U-shaped vertical cross section, and the front end surface 19a is wound inward so that the front end surface 19a faces radially outward and the inner surface 18b (the main body 11).
  • the bent portion 19b is turned back inward in the radial direction.
  • the outer surface of the bent portion 19b is formed into a convex curved surface, that is, a convex curved surface portion 19c.
  • the curled portion 17 has the bent portion 19b of the distal end portion 19 disposed in the locking groove 16a1, and the convex curved surface portion 19c abuts on the concave surface in the locking groove 16a1 (that is, the outer peripheral surface of the main body 11). Yes. As a result, the distal end portion 19 having the convex curved surface portion 19c is locked in the locking groove 16a1, and the movement is restricted.
  • the radius of curvature R1 of the concave surface in the locking groove 16a1 is the radius of curvature R2 of the convex curved surface portion 19c of the curled portion 17 (two-dot chain line in FIG. 3).
  • the radius of curvature R1 and the radius of curvature R2 are equal.
  • the thickness of the convex curved portion 19c of the curled portion 17 is R2
  • the thickness of the convex curved portion 19c of the curled portion 17 is t
  • the following expressions (1) and (2) are satisfied.
  • the thickness t is 0.2 mm or more and 0.6 mm or less
  • the thickness t is more preferably 0.3 mm or more and 0.5 mm or less.
  • the radius of curvature of the concave surface in the locking groove 16a1 is R1
  • (3) 1.0 ⁇ R2 ⁇ R1 ⁇ 2.0 ⁇ R2 By setting the radius of curvature R1 of the locking groove 16a1 to be in the range of 1 to 2 times the radius of curvature R2 of the curled portion 17, the curled portion 17 can be appropriately locked to the locking groove 16a1.
  • the curled portion 17 has a front end portion 19 bent in a substantially U-shaped longitudinal section and a front end surface 19 a in contact with an inner surface 18 b of the side wall portion 18.
  • the tip portion 19 supports two locations, the tip 18 a and the inner surface 18 b of the side wall portion 18.
  • the distal end portion 19 has two support portions 19 d and 19 e extending in the radial direction that support the distal end 18 a and the inner surface 18 b of the side wall portion 18.
  • the opening portion 16 and the curl portion 17 of the main body 11 constitute a base portion 20 having a substantially hollow donut shape (torus body shape) as a whole.
  • the lid 30 has a cap part 31, a sealing material 32, and a pull tab part 33.
  • the cap part 31 is made of a metal such as aluminum or an aluminum alloy, for example.
  • the cap part 31 integrally has a disk-shaped upper part 31a and an annular side part 31b extending downward from the periphery of the upper part 31a.
  • the sealing material 32 is an annular member made of synthetic resin having elasticity.
  • the sealing material 32 is disposed so as to overlap the lower surface of the upper portion 31a.
  • the pull tab portion 33 is integrally connected to the tip of the side portion 31 b of the cap portion 31.
  • the lid 30 is wound around the curl portion 17 over the entire periphery of the side portion 31b of the cap portion 31 in a state where the sealing material 32 is in close contact with the curl portion 17 of the metal container 10. Thereby, the lid 30 is fixedly attached to (attached to) the metal container 10. The lid 30 can be removed from the metal container 10 by pulling the pull tab portion 33 upward from the near side to tear the side portion 31 b and the upper portion 31 a of the cap portion 31.
  • the abdomen 13 is left as it is with respect to a metal container body having a bottomed cylindrical shape with an open upper end and a constant diameter over the entire direction of the axis L. Then, the upper portion of the metal container body is drawn to form the shoulder portion 14, the neck portion 15 and the opening portion 16 sequentially (main body forming step S1).
  • the curled portion 17 is formed by folding back the end of the portion that is continuous with the upper end of the opening portion 16 so as to be entirely rounded outwardly in the radial direction (curl portion forming step S2).
  • the front end portion 19 of the curled portion 17 is bent into a substantially U-shaped longitudinal section, and the front end surface 19a is wound inward so that the front end surface 19a faces radially outward to the inner surface 18b of the side wall portion 18. It is folded back so that it abuts and the bent portion 19b faces radially inward.
  • the curled portion 17 is pressed radially inward (compression step S3). Thereby, the convex curved surface portion 19c of the curled portion 17 comes into contact with the concave surface in the locking groove 16a1, and the base portion 20 is formed. Thus, the metal container 10 of this embodiment is manufactured.
  • the cap body 20 before being tightened is covered with the cap part 20 so as to close the opening.
  • the tip of the side portion 31 b of the lid body 30 is wound around the curled portion 17 by the capping device, and the lid body 30 is attached to the base portion 20.
  • a load is applied to the curled portion 17 in the direction of the axis L and radially inward so that the sealing material 32 is in close contact with the curled portion 17.
  • the tip portion 19 of the curled portion 17 is locked in the locking groove 16a1 and the movement is restricted, so that deformation due to the movement of the tip portion 19 of the curled portion 17 can be suppressed.
  • the tip portion 19 supports a load inward in the radial direction, and the deformation of the curled portion 17 can be suppressed.
  • the curled portion 17 is formed so as to bulge outward from the main body 11 in the radial direction.
  • a side wall portion 18 of the curled portion 17 is connected to one end of the main body 11 (specifically, the opening portion 16) and is arranged at a distance from the main body 11.
  • the front end portion 19 is continuous with the front end 18 a of the side wall portion 18, and is bent so that the front end surface 19 a is in contact with the inner surface 18 b of the side wall portion 18. Since it did in this way, two places, the front-end
  • a locking groove 16a1 that is recessed radially inward over the entire circumference is provided on the outer peripheral surface of the main body 11.
  • the convex curved surface portion 19c of the curled portion 17 is in contact with the concave surface in the locking groove 16a1.
  • tip part 19 of the curl part 17 in which the convex curved surface part 19c was provided is latched by the latching groove
  • the curvature radius R1 of the concave surface in the locking groove 16a1 is larger than the curvature radius R2 of the convex curved surface portion 19c of the curled portion 17.
  • the main body 11 is damaged when a load is applied to the curled portion 17. This can be more effectively suppressed.
  • the metal container 1 with a lid of the present embodiment it is possible to effectively increase the rigidity with respect to the load applied toward the radially inner side in the curled portion 17.
  • the opening 16 is provided with the locking groove 16a1, but the present invention is not limited to this.
  • an opening 16A provided with only the tapered portion 16b without the locking groove 16a1 is provided. You may employ
  • the “extending direction” refers to a direction in which each part extends in the longitudinal sectional view. Even if it is the structure which has the opening part 16 in which the latching groove
  • the curled portion 17 has a configuration in which the tip surface 19a of the tip portion 19 abuts on the inner surface 18b of the side wall portion 18.
  • the present invention is not limited to this.
  • a configuration having a curled portion 17A provided with a tip portion 19A bent in a substantially C-shaped longitudinal section so that the outer surface 19f abuts on the tip surface 19a is employed. May be.
  • a configuration having a curled portion 17B provided with a tip portion 19B bent in a substantially S-shaped longitudinal section so that the inner surface 19g abuts instead of the tip surface 19a is employed. May be.
  • the metal container 1 with a lid of embodiment mentioned above was the structure by which the cover 30 was attached to the nozzle
  • a metal container The present invention may be applied to a bottle can in which a cap that can be attached to and detached from the base part is screwed.
  • SYMBOLS 1 Metal container with a lid, 10 ... Metal container, 11 ... Main body, 12 ... Bottom part, 13 ... Abdominal part, 14 ... Shoulder part, 15 ... Neck part, 16, 16A ... Opening part, 16a ... Groove part, 16a1 ... Locking Groove, 16b ... tapered portion, 17, 17A, 17B ... curled portion, 18 ... side wall portion, 18a ... tip, 18b ... inner surface, 19, 19A, 19B ... tip portion, 19a ... tip surface, 19b ... folded portion, 19c ... Convex curved surface portion, 19d, 19e ... support portion, 19f ... outer surface, 19g ... inner surface, 20 ...

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

L'invention concerne un récipient métallique et un récipient métallique à couvercle permettant d'améliorer efficacement la rigidité par rapport à des charges appliquées sur une partie bouclée, dans un sens radial vers l'intérieur. Le récipient métallique (10) selon l'invention, qui constitue une partie d'un récipient métallique (1) à couvercle, est formé de sorte que la partie bouclée (17) s'étende vers l'extérieur dans un sens radial à partir du corps principal (11). La partie paroi latérale (18) de la partie bouclée (17) est contiguë à une extrémité du corps principal (11) et disposée de sorte qu'un espace soit formé entre les deux. Une partie extrémité (19) est reliée à l'extrémité (18a) de la partie paroi latérale (18) et pliée de sorte que la surface d'extrémité (19a) touche la surface interne (18b) de la partie paroi latérale (18).
PCT/JP2017/032591 2016-10-03 2017-09-08 Récipient métallique et récipient métallique à couvercle Ceased WO2018066309A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016195671A JP2019206344A (ja) 2016-10-03 2016-10-03 金属容器および蓋体付金属容器
JP2016-195671 2016-10-03

Publications (1)

Publication Number Publication Date
WO2018066309A1 true WO2018066309A1 (fr) 2018-04-12

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ID=61830988

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/032591 Ceased WO2018066309A1 (fr) 2016-10-03 2017-09-08 Récipient métallique et récipient métallique à couvercle

Country Status (2)

Country Link
JP (1) JP2019206344A (fr)
WO (1) WO2018066309A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023102643A (ja) * 2022-01-12 2023-07-25 大和製罐株式会社 広口ボトル型缶

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245211U (fr) * 1985-09-06 1987-03-19
JPS6242691B2 (fr) * 1978-11-30 1987-09-09 Takeuchi Puresu Kogyo Kk
JP2002225864A (ja) * 2001-01-25 2002-08-14 Daiwa Can Co Ltd カール部を備えた鋼板製容器及びカール部被覆方法
JP2004154862A (ja) * 2002-09-12 2004-06-03 Daiwa Can Co Ltd 金属缶の開口カール部成形方法
JP2013227083A (ja) * 2009-04-06 2013-11-07 Takeuchi Press Ind Co Ltd 金属ボトル缶

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242691B2 (fr) * 1978-11-30 1987-09-09 Takeuchi Puresu Kogyo Kk
JPS6245211U (fr) * 1985-09-06 1987-03-19
JP2002225864A (ja) * 2001-01-25 2002-08-14 Daiwa Can Co Ltd カール部を備えた鋼板製容器及びカール部被覆方法
JP2004154862A (ja) * 2002-09-12 2004-06-03 Daiwa Can Co Ltd 金属缶の開口カール部成形方法
JP2013227083A (ja) * 2009-04-06 2013-11-07 Takeuchi Press Ind Co Ltd 金属ボトル缶

Also Published As

Publication number Publication date
JP2019206344A (ja) 2019-12-05

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