WO2011102066A1 - Can lid - Google Patents
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- WO2011102066A1 WO2011102066A1 PCT/JP2010/073801 JP2010073801W WO2011102066A1 WO 2011102066 A1 WO2011102066 A1 WO 2011102066A1 JP 2010073801 W JP2010073801 W JP 2010073801W WO 2011102066 A1 WO2011102066 A1 WO 2011102066A1
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- lid
- wall
- annular bead
- panel
- chuck wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/24—Deep-drawing involving two drawing operations having effects in opposite directions with respect to the blank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D51/44—Making closures, e.g. caps
Definitions
- the present invention relates to a can lid used for a metal can filled with carbonated beverages such as beer, cola, and cider, and in particular, reduces the amount of metal material used to improve pressure resistance and buckling during a drop impact or the like.
- the present invention relates to a can lid that is effectively prevented from cracking.
- this type of can lid is generally formed with an annular bead protruding downward on the periphery of the center panel, and a chuck wall and a seaming panel are formed upward from the annular bead. In view of this, reduction of the amount of metal materials used is required.
- the blank diameter of the metal material used to form the can lid is small, most of the die set consisting of the punch cutter, ring die, core punch, annular die, core die, etc. for forming the can lid is new.
- the manufacturing cost for manufacturing is required, and even if the amount of metal material used is reduced, the merit of cost reduction cannot be obtained.
- Patent Documents 2 and 3 various can lids for improving pressure resistance have been proposed.
- Patent Documents 2 and 3 it is desired to provide a can lid having pressure resistance by further reducing the amount of metal material used.
- the present invention has been made in order to solve the above-described problems of the prior art, and the object of the present invention is to reduce the thickness of the metal material to reduce the usage amount and to improve the pressure resistance. Another object of the present invention is to provide a can lid that effectively prevents cracking of the chuck wall due to buckling during a drop impact or the like.
- an annular bead protruding downward from the peripheral edge of the center panel, a chuck wall and a seaming panel are formed upward from the annular bead, an outer diameter D of 56 to 63 mm, and a thickness of 0.18 to 0.
- the height dimension H from the lower end of the annular bead to the seaming panel is 7.0 to 7.6 mm
- the height dimension h of the outer wall of the annular bead is 1.0 mm or less.
- the can lid has an angle ⁇ with respect to the axis of the chuck wall of more than 20 degrees and less than 30 degrees.
- the center panel has a depth of 2 to 3 mm; 2.
- the radius of curvature r of the bottom wall of the annular bead is 0.5 to 1 mm; Is preferred.
- the pressure resistance can be improved by reducing the amount of metal material used, and the can lid can effectively prevent cracking of the chuck wall due to buckling during a drop impact or the like. be able to.
- Partial sectional view of the can lid of the present invention Reference drawing showing the shell forming process of the can lid of the present invention The graph which shows the experimental result which confirms the pressure
- FIG. 1 is a partial cross-sectional view of the can lid of the present invention.
- the outer diameter D is set to a small diameter of 56 to 63 mm and the thickness t is set to 0.18.
- It is a can lid made of an aluminum metal plate thinned to 0.25 mm.
- the can lid 1 is formed continuously with the center panel 2 and the annular bead 3 protruding downward from the periphery of the center panel 2, the chuck wall 4 rising from the upper end of the outer wall 3 a of the annular bead 3, and the chuck wall 4.
- a seaming panel 5 is provided.
- the outer wall 3a and the inner wall 3b of the annular bead 3 of the can lid 1 rise vertically and linearly, the bottom wall 3c is formed in an arc shape, and the chuck wall 4 extends from the upper end of the outer wall 3a of the annular bead 3 to the axis (center).
- the inner wall 3b of the annular bead 3 is connected to the center panel 2 while being inclined at an angle ⁇ of more than 20 degrees and less than 30 degrees, preferably more than 20 degrees and less than 25 degrees. Yes.
- the outer wall 3a of the annular bead 3 is not limited to a vertical straight line, and may be formed by an arcuate curve forming the bottom wall 3c or the straight line and the curve, and the radius of curvature r of the arc.
- the height dimension H from the lower end of the annular bead 3 to the seaming panel 5 is 7.0 to 7.6 mm, and the height dimension h of the outer wall 3a of the annular bead 3 is 1.0 mm or less (including zero),
- the thickness is preferably 0.95 mm or less, and more preferably 0.75 to 0.95 mm. With this configuration, even if a thin aluminum metal plate having a thickness t of 0.18 to 0.25 mm is used, the can It is possible to improve the pressure resistance of the lid 1 and effectively prevent the chuck wall 4 from cracking due to buckling during a drop impact or the like.
- the height dimension H from the lower end of the annular bead 3 to the seaming panel 5 is the dimension up to the highest part of the back surface of the seaming panel 5 that curves upward in a convex shape.
- the diameter D1 of the center panel 2 of the can lid 1 is 42.2 when the outer diameter D is 56 mm in order to reduce the amount of metal material used and improve the pressure resistance in combination with the configuration of the can lid 1 described above.
- the thickness is preferably 47.5 to 48.6 mm.
- FIG. 2 is a diagram showing a pressing process for forming the can lid 1 before attaching the score process and rivets for opening
- FIG. 2 (A) shows the going process
- FIG. 2 (B) returns.
- a process is shown.
- FIG. 2A a circular blank is punched out from the aluminum metal plate 20 with a punch cutter 21, and the seaming panel corresponding portion 24 is drawn with the core punch 23 while being held with the ring die 22 and the ring punch 28, The seaming panel corresponding part 24, the chuck wall corresponding part 25, the vertical outer wall corresponding part 26 and the central panel corresponding part 27 are formed. Further, as shown in FIG.
- annular bead composed of an outer wall 3a, an inner wall 3b, and a bottom wall 3c is raised with the core punch 23 and a cylindrical core die 29 sandwiching the center panel corresponding portion 27. 3 is formed into a can lid 1.
- the can lid 1 of the present invention when manufactured, it can be manufactured simply by changing or replacing the shapes of the ring die 22, the core punch 23, and the cylindrical core die 29 of the die set of the die.
- the cost for newly manufacturing most of the above is unnecessary, and the cost can be reduced.
- the height dimension H from the lower end of the annular bead to the seaming panel is in the range of 7.0 mm to 7.6 mm, and the height dimension h of the outer wall of the annular bead is 1 mm or less, especially 0.75 to It can be seen that by setting the thickness to 0.95 mm, the pressure resistance is improved and the aluminum metal plate to be used can be thin even if the inclination angle ⁇ of the chuck wall is a small angle of more than 20 degrees and less than 30 degrees.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Provided is a can lid in which the thickness of a metal material is reduced to enable a decrease in the amount of the metal material used, and which has an improved pressure resistance to thereby effectively prevent cracking in a chuck wall due to buckling caused by drop impact or the like.
The can lid, which is formed of an aluminum alloy, comprises a circular bead projecting downward from the rim of a center panel, and a chuck wall and a seaming panel being formed above the circular bead, and has an outer lid diameter of 56-63 mm and a thickness of 0.18-0.25 mm, wherein the height (H) from the bottom end of said circular bead to the seaming panel is 7.0-7.6 mm, the height (h) of the outer wall of the circular bead is equal to or less than 1.0 mm, and the angle (α) of said chuck wall to the axial line is 20-30o exclusive.
Description
本発明は、ビール、コーラ、サイダー等の炭酸飲料を充填する金属缶に用いられる缶蓋に関し、特に、金属材料の使用量を削減して耐圧性を向上させると共に、落下衝撃時等のバックリングによる亀裂が有効に防止された缶蓋に関する。
The present invention relates to a can lid used for a metal can filled with carbonated beverages such as beer, cola, and cider, and in particular, reduces the amount of metal material used to improve pressure resistance and buckling during a drop impact or the like. The present invention relates to a can lid that is effectively prevented from cracking.
従来、この種の缶蓋は、一般的にセンターパネルの周縁に下方に突出する環状ビードが形成され、この環状ビードから上方にチャックウォール及びシーミングパネルが形成されており、コストダウン及び環境対応の観点から金属材料の使用量削減が求められている。
Conventionally, this type of can lid is generally formed with an annular bead protruding downward on the periphery of the center panel, and a chuck wall and a seaming panel are formed upward from the annular bead. In view of this, reduction of the amount of metal materials used is required.
そして、この種の缶蓋の耐圧性向上、金属材料の使用量削減を図る缶蓋として、センターパネル径を縮小し、チャックウォールの傾斜角度を大きくすることにより、缶蓋を成形する金属材料の径（ブランク径）を小径とし、金属材料の使用量削減を図ると共に、耐圧性を向上させた缶蓋が提案されている（特許文献１）。
As a can lid for improving the pressure resistance of this type of can lid and reducing the amount of metal material used, the center panel diameter is reduced, and the inclination angle of the chuck wall is increased, so that the metal material for molding the can lid A can lid has been proposed in which the diameter (blank diameter) is reduced to reduce the amount of metal material used and the pressure resistance is improved (Patent Document 1).
しかしながら、缶蓋の成形に使用する金属材料のブランク径を小径とすると、缶蓋を成形する金型のポンチカッター、リングダイ、コアポンチ、環状ダイ、及びコアダイ等から成るダイセットの大部分を新規に製作するための製作費用を要し、金属材料の使用量を削減してもコストダウンのメリットを得ることができない。
However, if the blank diameter of the metal material used to form the can lid is small, most of the die set consisting of the punch cutter, ring die, core punch, annular die, core die, etc. for forming the can lid is new. The manufacturing cost for manufacturing is required, and even if the amount of metal material used is reduced, the merit of cost reduction cannot be obtained.
一方、耐圧性を向上させるための缶蓋も種々提案されている（特許文献２、３）。
しかしながら、より一層の金属材料の使用量削減を図り、耐圧性を有する缶蓋の提供が望まれている。 On the other hand, various can lids for improving pressure resistance have been proposed (Patent Documents 2 and 3).
However, it is desired to provide a can lid having pressure resistance by further reducing the amount of metal material used.
しかしながら、より一層の金属材料の使用量削減を図り、耐圧性を有する缶蓋の提供が望まれている。 On the other hand, various can lids for improving pressure resistance have been proposed (
However, it is desired to provide a can lid having pressure resistance by further reducing the amount of metal material used.
本発明は、前述した従来技術の課題を解決するためになされたものであって、その目的とするところは、金属材料の厚みを減少して使用量削減を可能にすると共に耐圧性を向上させ、落下衝撃時等のバックリングによるチャックウォールの亀裂を有効に防止する缶蓋を提供することにある。
The present invention has been made in order to solve the above-described problems of the prior art, and the object of the present invention is to reduce the thickness of the metal material to reduce the usage amount and to improve the pressure resistance. Another object of the present invention is to provide a can lid that effectively prevents cracking of the chuck wall due to buckling during a drop impact or the like.
本発明によれば、センターパネルの周縁から下方に突出する環状ビード、該環状ビードから上方にチャックウォール及びシーミングパネルが形成され、外径Ｄが５６乃至６３ｍｍ、厚みが０．１８乃至０．２５ｍｍのアルミニウム合金製の缶蓋において、前記環状ビード下端からシーミングパネルまでの高さ寸法Ｈが７．０乃至７．６ｍｍ、環状ビードの外側壁の高さ寸法ｈが１．０ｍｍ以下であり、前記チャックウォールの軸線に対する角度αが２０度を超え３０度未満である缶蓋が提供される。
また、本発明の缶蓋においては、
１．前記センターパネルの深さが２乃至３ｍｍであること、
２．前記環状ビードの底壁の曲率半径ｒが０．５乃至１ｍｍであること、
が好ましい。 According to the present invention, an annular bead protruding downward from the peripheral edge of the center panel, a chuck wall and a seaming panel are formed upward from the annular bead, an outer diameter D of 56 to 63 mm, and a thickness of 0.18 to 0. In a 25 mm aluminum alloy can lid, the height dimension H from the lower end of the annular bead to the seaming panel is 7.0 to 7.6 mm, and the height dimension h of the outer wall of the annular bead is 1.0 mm or less. The can lid has an angle α with respect to the axis of the chuck wall of more than 20 degrees and less than 30 degrees.
In the can lid of the present invention,
1. The center panel has a depth of 2 to 3 mm;
2. The radius of curvature r of the bottom wall of the annular bead is 0.5 to 1 mm;
Is preferred.
また、本発明の缶蓋においては、
１．前記センターパネルの深さが２乃至３ｍｍであること、
２．前記環状ビードの底壁の曲率半径ｒが０．５乃至１ｍｍであること、
が好ましい。 According to the present invention, an annular bead protruding downward from the peripheral edge of the center panel, a chuck wall and a seaming panel are formed upward from the annular bead, an outer diameter D of 56 to 63 mm, and a thickness of 0.18 to 0. In a 25 mm aluminum alloy can lid, the height dimension H from the lower end of the annular bead to the seaming panel is 7.0 to 7.6 mm, and the height dimension h of the outer wall of the annular bead is 1.0 mm or less. The can lid has an angle α with respect to the axis of the chuck wall of more than 20 degrees and less than 30 degrees.
In the can lid of the present invention,
1. The center panel has a depth of 2 to 3 mm;
2. The radius of curvature r of the bottom wall of the annular bead is 0.5 to 1 mm;
Is preferred.
本発明の缶蓋によれば、金属材料の使用量を削減して耐圧性を向上させることができ、また、落下衝撃時等のバックリングによるチャックウォールの亀裂を有効に防止できる缶蓋とすることができる。
According to the can lid of the present invention, the pressure resistance can be improved by reducing the amount of metal material used, and the can lid can effectively prevent cracking of the chuck wall due to buckling during a drop impact or the like. be able to.
以下、本発明の缶蓋を図面に基づいて説明する。
図１は本発明の缶蓋の部分断面図であって、コストダウン及び環境対応の観点から金属材料使用量を削減するため、外径Ｄを５６乃至６３ｍｍの小径とし、厚みｔを０．１８乃至０．２５ｍｍと薄くしたアルミニウム金属板から成る缶蓋である。
そして、缶蓋１はセンターパネル２とセンターパネル２の周縁から下方に突出する環状ビード３、環状ビード３の外側壁３ａの上端から立ち上がるチャックウォール４、及びチャックウォール４に連続して形成されたシーミングパネル５を有する。 Hereinafter, the can lid of the present invention will be described with reference to the drawings.
FIG. 1 is a partial cross-sectional view of the can lid of the present invention. In order to reduce the amount of metal material used from the viewpoint of cost reduction and environmental friendliness, the outer diameter D is set to a small diameter of 56 to 63 mm and the thickness t is set to 0.18. It is a can lid made of an aluminum metal plate thinned to 0.25 mm.
The can lid 1 is formed continuously with thecenter panel 2 and the annular bead 3 protruding downward from the periphery of the center panel 2, the chuck wall 4 rising from the upper end of the outer wall 3 a of the annular bead 3, and the chuck wall 4. A seaming panel 5 is provided.
図１は本発明の缶蓋の部分断面図であって、コストダウン及び環境対応の観点から金属材料使用量を削減するため、外径Ｄを５６乃至６３ｍｍの小径とし、厚みｔを０．１８乃至０．２５ｍｍと薄くしたアルミニウム金属板から成る缶蓋である。
そして、缶蓋１はセンターパネル２とセンターパネル２の周縁から下方に突出する環状ビード３、環状ビード３の外側壁３ａの上端から立ち上がるチャックウォール４、及びチャックウォール４に連続して形成されたシーミングパネル５を有する。 Hereinafter, the can lid of the present invention will be described with reference to the drawings.
FIG. 1 is a partial cross-sectional view of the can lid of the present invention. In order to reduce the amount of metal material used from the viewpoint of cost reduction and environmental friendliness, the outer diameter D is set to a small diameter of 56 to 63 mm and the thickness t is set to 0.18. It is a can lid made of an aluminum metal plate thinned to 0.25 mm.
The can lid 1 is formed continuously with the
缶蓋１の環状ビード３の外側壁３ａ及び内側壁３ｂは垂直に直線状に立ち上がり、底壁３ｃが円弧状に形成され、前記環状ビード３の外側壁３ａ上端からチャックウォール４が軸線（中心軸線）に対して２０度を超え３０度未満、好ましくは２０度を超え２５度未満の角度αで傾斜して形成され、一方、前記環状ビード３の内側壁３ｂはセンターパネル２に連接されている。
そして、前記角度αが２０度未満であると耐圧性が低下し、３０度以上であるとセンターパネル２の径が小径となり、図示しないが前記センターパネル２に形成される開口部（スコア等）の位置がシーミングパネル５から遠くなり、金属缶に缶蓋を巻き締めた際に内容物の飲料が飲みづらくなる。
尚、前記環状ビード３の外側壁３ａは、垂直な直線に限定されず、底壁３ｃを形成する円弧状の曲線、或いは前記直線と曲線で形成されていても良く、前記円弧の曲率半径ｒは、環状ビード３の成形性、缶蓋１の耐圧性の向上の点から０．５乃至１ｍｍとし、前記環状ビード３の外側壁３ａと内側壁３ｂの間隔は１乃至２ｍｍとすることが好ましい。
そして、前記環状ビード３の曲率半径ｒが０．５ｍｍ未満であるとバックリング時に応力集中によって亀裂が生じ易く、１ｍｍを越えると耐圧性が低下する。
同様に、環状ビード３の外側壁３ａと内側壁３ｂの間隔が１ｍｍ未満であるとバックリング時に応力集中によって亀裂が生じ易く、２ｍｍを越えると耐圧性が低下する。 Theouter wall 3a and the inner wall 3b of the annular bead 3 of the can lid 1 rise vertically and linearly, the bottom wall 3c is formed in an arc shape, and the chuck wall 4 extends from the upper end of the outer wall 3a of the annular bead 3 to the axis (center). The inner wall 3b of the annular bead 3 is connected to the center panel 2 while being inclined at an angle α of more than 20 degrees and less than 30 degrees, preferably more than 20 degrees and less than 25 degrees. Yes.
If the angle α is less than 20 degrees, the pressure resistance decreases, and if it is 30 degrees or more, the diameter of thecenter panel 2 becomes small, and although not shown, an opening formed in the center panel 2 (score, etc.) Is far from the seaming panel 5 and it becomes difficult to drink the beverage of the contents when the can lid is wrapped around the metal can.
Theouter wall 3a of the annular bead 3 is not limited to a vertical straight line, and may be formed by an arcuate curve forming the bottom wall 3c or the straight line and the curve, and the radius of curvature r of the arc. Is preferably 0.5 to 1 mm from the viewpoint of improving the formability of the annular bead 3 and the pressure resistance of the can lid 1, and the interval between the outer wall 3 a and the inner wall 3 b of the annular bead 3 is preferably 1 to 2 mm. .
If the radius of curvature r of theannular bead 3 is less than 0.5 mm, cracks are likely to occur due to stress concentration during buckling, and if it exceeds 1 mm, pressure resistance decreases.
Similarly, if the distance between theouter wall 3a and the inner wall 3b of the annular bead 3 is less than 1 mm, cracks are likely to occur due to stress concentration during buckling, and if it exceeds 2 mm, the pressure resistance decreases.
そして、前記角度αが２０度未満であると耐圧性が低下し、３０度以上であるとセンターパネル２の径が小径となり、図示しないが前記センターパネル２に形成される開口部（スコア等）の位置がシーミングパネル５から遠くなり、金属缶に缶蓋を巻き締めた際に内容物の飲料が飲みづらくなる。
尚、前記環状ビード３の外側壁３ａは、垂直な直線に限定されず、底壁３ｃを形成する円弧状の曲線、或いは前記直線と曲線で形成されていても良く、前記円弧の曲率半径ｒは、環状ビード３の成形性、缶蓋１の耐圧性の向上の点から０．５乃至１ｍｍとし、前記環状ビード３の外側壁３ａと内側壁３ｂの間隔は１乃至２ｍｍとすることが好ましい。
そして、前記環状ビード３の曲率半径ｒが０．５ｍｍ未満であるとバックリング時に応力集中によって亀裂が生じ易く、１ｍｍを越えると耐圧性が低下する。
同様に、環状ビード３の外側壁３ａと内側壁３ｂの間隔が１ｍｍ未満であるとバックリング時に応力集中によって亀裂が生じ易く、２ｍｍを越えると耐圧性が低下する。 The
If the angle α is less than 20 degrees, the pressure resistance decreases, and if it is 30 degrees or more, the diameter of the
The
If the radius of curvature r of the
Similarly, if the distance between the
そして、環状ビード３の下端からシーミングパネル５までの高さ寸法Ｈは７．０乃至７．６ｍｍ、環状ビード３の外側壁３ａの高さ寸法ｈを１．０ｍｍ以下（ゼロも含む）、好ましくは０．９５ｍｍ以下、より好ましくは０．７５乃至０．９５ｍｍとしており、このような構成とすることにより、厚みｔが０．１８乃至０．２５ｍｍといった薄いアルミニウム金属板を用いても、缶蓋１の耐圧性を向上させ、落下衝撃時等のバックリングによるチャックウォール４の亀裂を有効に防止することが可能となる。
上記環状ビード３の下端からシーミングパネル５までの高さ寸法Ｈは、上方に凸形状に湾曲するシーミングパネル５の裏面の最も高い部分までの寸法である。 The height dimension H from the lower end of theannular bead 3 to the seaming panel 5 is 7.0 to 7.6 mm, and the height dimension h of the outer wall 3a of the annular bead 3 is 1.0 mm or less (including zero), The thickness is preferably 0.95 mm or less, and more preferably 0.75 to 0.95 mm. With this configuration, even if a thin aluminum metal plate having a thickness t of 0.18 to 0.25 mm is used, the can It is possible to improve the pressure resistance of the lid 1 and effectively prevent the chuck wall 4 from cracking due to buckling during a drop impact or the like.
The height dimension H from the lower end of theannular bead 3 to the seaming panel 5 is the dimension up to the highest part of the back surface of the seaming panel 5 that curves upward in a convex shape.
上記環状ビード３の下端からシーミングパネル５までの高さ寸法Ｈは、上方に凸形状に湾曲するシーミングパネル５の裏面の最も高い部分までの寸法である。 The height dimension H from the lower end of the
The height dimension H from the lower end of the
また、缶蓋１のセンターパネル２の径Ｄ１は、前述した缶蓋１の構成と相まって、金属材料の使用量削減し、耐圧性を向上させるため、外径Ｄが５６ｍｍの場合は４２．２乃至４３．２ｍｍ、外径Ｄが６３ｍｍの場合は、４７．５乃至４８．６ｍｍとすることが好ましい。
In addition, the diameter D1 of the center panel 2 of the can lid 1 is 42.2 when the outer diameter D is 56 mm in order to reduce the amount of metal material used and improve the pressure resistance in combination with the configuration of the can lid 1 described above. When the outer diameter D is 63 mm, the thickness is preferably 47.5 to 48.6 mm.
図２は、開口するためのスコア加工やリベットを取り付ける前の缶蓋１を成形するプレスの成形工程を示す図であり、図２（Ａ）は行き工程を示し、図２（Ｂは）戻り工程を示す。
図２（Ａ）に示すように、アルミニウム金属板２０からポンチカッター２１によって円形ブランクを打ち抜き、シーミングパネル対応部２４をリングダイ２２及びリングポンチ２８によって保持しながらコアポンチ２３により絞り加工を行い、シーミングパネル対応部２４、チャックウォール対応部２５、垂直の外側壁対応部２６及び中央パネル対応部２７を成形する。
さらに、図２(Ｂ)に示すように、コアポンチ２３と円筒状コアダイ２９で中央パネル対応部２７を挟んだ状態で上昇させ、外側壁３ａ、内側壁３ｂ、及び底壁部３ｃから成る環状ビード３を成形して缶蓋１とする。 FIG. 2 is a diagram showing a pressing process for forming the can lid 1 before attaching the score process and rivets for opening, FIG. 2 (A) shows the going process, and FIG. 2 (B) returns. A process is shown.
As shown in FIG. 2A, a circular blank is punched out from thealuminum metal plate 20 with a punch cutter 21, and the seaming panel corresponding portion 24 is drawn with the core punch 23 while being held with the ring die 22 and the ring punch 28, The seaming panel corresponding part 24, the chuck wall corresponding part 25, the vertical outer wall corresponding part 26 and the central panel corresponding part 27 are formed.
Further, as shown in FIG. 2 (B), an annular bead composed of anouter wall 3a, an inner wall 3b, and a bottom wall 3c is raised with the core punch 23 and a cylindrical core die 29 sandwiching the center panel corresponding portion 27. 3 is formed into a can lid 1.
図２（Ａ）に示すように、アルミニウム金属板２０からポンチカッター２１によって円形ブランクを打ち抜き、シーミングパネル対応部２４をリングダイ２２及びリングポンチ２８によって保持しながらコアポンチ２３により絞り加工を行い、シーミングパネル対応部２４、チャックウォール対応部２５、垂直の外側壁対応部２６及び中央パネル対応部２７を成形する。
さらに、図２(Ｂ)に示すように、コアポンチ２３と円筒状コアダイ２９で中央パネル対応部２７を挟んだ状態で上昇させ、外側壁３ａ、内側壁３ｂ、及び底壁部３ｃから成る環状ビード３を成形して缶蓋１とする。 FIG. 2 is a diagram showing a pressing process for forming the can lid 1 before attaching the score process and rivets for opening, FIG. 2 (A) shows the going process, and FIG. 2 (B) returns. A process is shown.
As shown in FIG. 2A, a circular blank is punched out from the
Further, as shown in FIG. 2 (B), an annular bead composed of an
このように、本発明の缶蓋１の製造に際しては、金型のダイセットのリングダイ２２、コアポンチ２３，円筒状コアダイ２９の形状を変更、或いは交換するだけで製造可能であり、前記ダイセットの大部分を新規に製作するための費用は不要であり、コストの低減が図れる。
Thus, when the can lid 1 of the present invention is manufactured, it can be manufactured simply by changing or replacing the shapes of the ring die 22, the core punch 23, and the cylindrical core die 29 of the die set of the die. The cost for newly manufacturing most of the above is unnecessary, and the cost can be reduced.
（実験例）
厚み０．２３５ｍｍ、５１８２－Ｈ１９材のアルミニウム金属板を使用し、外径Ｄ：２０４径（６２．３ｍｍ）、センターパネル径：４８．５ｍｍ、センターパネルの深さｈｐ：２．５ｍｍ、チャックウォール角度α：２１度、環状ビードの下端からシーミングパネルまでの高さ寸法Ｈ：７．００ｍｍ、７．２０ｍｍ，７．４０ｍｍ及び７．６０ｍｍにおいて、環状ビードの外側壁の高さ寸法ｈ：０．７５ｍｍ、０．９５ｍｍの缶蓋シェルを作成して耐圧性を確認した。 (Experimental example)
Using an aluminum metal plate of thickness 0.235mm, 5182-H19, outer diameter D: 204 diameter (62.3mm), center panel diameter: 48.5mm, center panel depth hp: 2.5mm, chuck wall The angle α is 21 degrees, and the height dimension H from the lower end of the annular bead to the seaming panel is H: 7.00 mm, 7.20 mm, 7.40 mm, and 7.60 mm. A can lid shell of .75 mm and 0.95 mm was prepared and pressure resistance was confirmed.
厚み０．２３５ｍｍ、５１８２－Ｈ１９材のアルミニウム金属板を使用し、外径Ｄ：２０４径（６２．３ｍｍ）、センターパネル径：４８．５ｍｍ、センターパネルの深さｈｐ：２．５ｍｍ、チャックウォール角度α：２１度、環状ビードの下端からシーミングパネルまでの高さ寸法Ｈ：７．００ｍｍ、７．２０ｍｍ，７．４０ｍｍ及び７．６０ｍｍにおいて、環状ビードの外側壁の高さ寸法ｈ：０．７５ｍｍ、０．９５ｍｍの缶蓋シェルを作成して耐圧性を確認した。 (Experimental example)
Using an aluminum metal plate of thickness 0.235mm, 5182-H19, outer diameter D: 204 diameter (62.3mm), center panel diameter: 48.5mm, center panel depth hp: 2.5mm, chuck wall The angle α is 21 degrees, and the height dimension H from the lower end of the annular bead to the seaming panel is H: 7.00 mm, 7.20 mm, 7.40 mm, and 7.60 mm. A can lid shell of .75 mm and 0.95 mm was prepared and pressure resistance was confirmed.
確認した結果、図３に示すように、前記Ｈ：７ｍｍにおいて、ｈ：０．７５ｍｍ、０．９５ｍｍでチャックウォールに亀裂が発生せず、耐圧圧力はそれぞれ６００ｋＰａ、６２０ｋＰａであった。
また、前記Ｈ：７．２０ｍｍ、７．４０ｍｍ、７．６０ｍｍにおいては、ｈ：０．７５ｍｍ、０．９５ｍｍで同様にチャックウォールに亀裂が発生せず、耐圧圧力もｈ：０．７５ｍｍで６２５乃至７０５ｋＰａ、ｈ：０．９５ｍｍで６５５乃至７２５ｋＰａと耐圧圧力が向上した。
これらの結果から、環状ビードの下端からシーミングパネルまでの高さ寸法Ｈを７．０ｍｍから７．６ｍｍの範囲とし、環状ビードの外側壁の高さ寸法ｈを１ｍｍ以下、特に０．７５乃至０．９５ｍｍとすることにより、チャックウォールの傾斜角度αが２０度を超え３０度未満といった小さい角度であっても耐圧性が向上し、使用するアルミニウム金属板を薄くできることが判る。 As a result of confirmation, as shown in FIG. 3, at H: 7 mm, cracks did not occur at h: 0.75 mm and 0.95 mm, and the pressure resistance was 600 kPa and 620 kPa, respectively.
In the case of H: 7.20 mm, 7.40 mm, and 7.60 mm, cracks do not occur in the chuck wall at h: 0.75 mm and 0.95 mm, and the pressure resistance is 625 at h: 0.75 mm. Up to 705 kPa, h: 0.95 mm, withstand pressure improved to 655 to 725 kPa.
From these results, the height dimension H from the lower end of the annular bead to the seaming panel is in the range of 7.0 mm to 7.6 mm, and the height dimension h of the outer wall of the annular bead is 1 mm or less, especially 0.75 to It can be seen that by setting the thickness to 0.95 mm, the pressure resistance is improved and the aluminum metal plate to be used can be thin even if the inclination angle α of the chuck wall is a small angle of more than 20 degrees and less than 30 degrees.
また、前記Ｈ：７．２０ｍｍ、７．４０ｍｍ、７．６０ｍｍにおいては、ｈ：０．７５ｍｍ、０．９５ｍｍで同様にチャックウォールに亀裂が発生せず、耐圧圧力もｈ：０．７５ｍｍで６２５乃至７０５ｋＰａ、ｈ：０．９５ｍｍで６５５乃至７２５ｋＰａと耐圧圧力が向上した。
これらの結果から、環状ビードの下端からシーミングパネルまでの高さ寸法Ｈを７．０ｍｍから７．６ｍｍの範囲とし、環状ビードの外側壁の高さ寸法ｈを１ｍｍ以下、特に０．７５乃至０．９５ｍｍとすることにより、チャックウォールの傾斜角度αが２０度を超え３０度未満といった小さい角度であっても耐圧性が向上し、使用するアルミニウム金属板を薄くできることが判る。 As a result of confirmation, as shown in FIG. 3, at H: 7 mm, cracks did not occur at h: 0.75 mm and 0.95 mm, and the pressure resistance was 600 kPa and 620 kPa, respectively.
In the case of H: 7.20 mm, 7.40 mm, and 7.60 mm, cracks do not occur in the chuck wall at h: 0.75 mm and 0.95 mm, and the pressure resistance is 625 at h: 0.75 mm. Up to 705 kPa, h: 0.95 mm, withstand pressure improved to 655 to 725 kPa.
From these results, the height dimension H from the lower end of the annular bead to the seaming panel is in the range of 7.0 mm to 7.6 mm, and the height dimension h of the outer wall of the annular bead is 1 mm or less, especially 0.75 to It can be seen that by setting the thickness to 0.95 mm, the pressure resistance is improved and the aluminum metal plate to be used can be thin even if the inclination angle α of the chuck wall is a small angle of more than 20 degrees and less than 30 degrees.
１ 缶蓋
２ センターパネル
３ 環状ビード
４ チャックウォール
５ シーミングパネル
２０ アルミニウム金属板
２１ ポンチカッター
２２ リングダイ
２３ コアポンチ
２４ シーミングパネル対応部
２５ チャックウォール対応部
２６ 外側壁対応部
２７ センターパネル対応部
２８ リングポンチ
２９ 円筒状コアダイ DESCRIPTION OF SYMBOLS 1 Canlid 2 Center panel 3 Annular bead 4 Chuck wall 5 Seaming panel 20 Aluminum metal plate 21 Punch cutter 22 Ring die 23 Core punch 24 Seaming panel corresponding part 25 Chuck wall corresponding part 26 Outer wall corresponding part 27 Center panel corresponding part 28 Ring punch 29 cylindrical core die
２ センターパネル
３ 環状ビード
４ チャックウォール
５ シーミングパネル
２０ アルミニウム金属板
２１ ポンチカッター
２２ リングダイ
２３ コアポンチ
２４ シーミングパネル対応部
２５ チャックウォール対応部
２６ 外側壁対応部
２７ センターパネル対応部
２８ リングポンチ
２９ 円筒状コアダイ DESCRIPTION OF SYMBOLS 1 Can
Claims (3)
- センターパネルの周縁から下方に突出する環状ビード、該環状ビードから上方にチャックウォール及びシーミングパネルが形成され、外径Ｄが５６乃至６３ｍｍ、厚みが０．１８乃至０．２５ｍｍのアルミニウム合金製の缶蓋において、前記環状ビード下端からシーミングパネルまでの高さ寸法Ｈが７．０乃至７．６ｍｍ、環状ビードの外側壁の高さ寸法ｈが１．０ｍｍ以下であり、前記チャックウォールの軸線に対する角度αが２０度を超え３０度未満であることを特徴とする缶蓋。 An annular bead protruding downward from the periphery of the center panel, a chuck wall and a seaming panel are formed upward from the annular bead, and made of an aluminum alloy having an outer diameter D of 56 to 63 mm and a thickness of 0.18 to 0.25 mm. In the can lid, the height dimension H from the lower end of the annular bead to the seaming panel is 7.0 to 7.6 mm, the height dimension h of the outer wall of the annular bead is 1.0 mm or less, and the axis of the chuck wall The can lid, characterized in that the angle α with respect to is more than 20 degrees and less than 30 degrees.
- 前記センターパネルの深さが２乃至３ｍｍであることを特徴とする請求項１に記載の缶蓋。 The can lid according to claim 1, wherein the depth of the center panel is 2 to 3 mm.
- 前記環状ビードの底壁の曲率半径ｒが０．５乃至１ｍｍであることを特徴とする請求項１又は２に記載の缶蓋。 The can lid according to claim 1 or 2, wherein the curvature radius r of the bottom wall of the annular bead is 0.5 to 1 mm.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-032876 | 2010-02-17 | ||
| JP2010032876 | 2010-02-17 | ||
| JP2010175670A JP2011189986A (en) | 2010-02-17 | 2010-08-04 | Can lid |
| JP2010-175670 | 2010-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011102066A1 true WO2011102066A1 (en) | 2011-08-25 |
Family
ID=44482675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/073801 WO2011102066A1 (en) | 2010-02-17 | 2010-12-28 | Can lid |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011189986A (en) |
| WO (1) | WO2011102066A1 (en) |
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| JP2002523244A (en) * | 1998-08-26 | 2002-07-30 | クラウン コーク アンド シール テクノロジーズ コーポレーション | Can end with reinforced side walls and apparatus and method for making the same |
| JP2004514561A (en) * | 2000-11-28 | 2004-05-20 | メタル、カンティナ、コーパレイシャン | Method for forming a can lid and its double seam |
| JP2005075382A (en) * | 2003-08-29 | 2005-03-24 | Showa Aluminum Kan Kk | Can lid for beverage and beverage can |
| JP2006506286A (en) * | 2002-11-19 | 2006-02-23 | アルコア インコーポレイテッド | Can end, tool for manufacturing the can end, and seaming chuck for mounting the processed can end to the can body |
| JP2007526859A (en) * | 2003-09-30 | 2007-09-20 | コンテナ・ディベロップメント・リミテッド | Can shell and double winding can end |
| US20090020543A1 (en) * | 2004-09-27 | 2009-01-22 | Ball Corporation | Container End Closure With Improved Chuck Wall and Countersink |
| JP4388726B2 (en) * | 2002-01-15 | 2009-12-24 | 東洋製罐株式会社 | Can lid |
-
2010
- 2010-08-04 JP JP2010175670A patent/JP2011189986A/en active Pending
- 2010-12-28 WO PCT/JP2010/073801 patent/WO2011102066A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146272A (en) * | 1974-08-26 | 1976-04-20 | Nat Can Corp | |
| JP2544222Y2 (en) * | 1989-04-06 | 1997-08-13 | 東洋製罐株式会社 | End wall for pressure vessel |
| JPH04311450A (en) * | 1991-04-05 | 1992-11-04 | Kobe Steel Ltd | Beverage can lid excellent in pressure resistance and manufacture thereof |
| JPH11505791A (en) * | 1995-05-24 | 1999-05-25 | カーノードメタルボックス ナームローゼ フェンノートシャップ | Can end and method for fixing can end to can body |
| JP2002523244A (en) * | 1998-08-26 | 2002-07-30 | クラウン コーク アンド シール テクノロジーズ コーポレーション | Can end with reinforced side walls and apparatus and method for making the same |
| JP2004514561A (en) * | 2000-11-28 | 2004-05-20 | メタル、カンティナ、コーパレイシャン | Method for forming a can lid and its double seam |
| JP4388726B2 (en) * | 2002-01-15 | 2009-12-24 | 東洋製罐株式会社 | Can lid |
| JP2006506286A (en) * | 2002-11-19 | 2006-02-23 | アルコア インコーポレイテッド | Can end, tool for manufacturing the can end, and seaming chuck for mounting the processed can end to the can body |
| JP2005075382A (en) * | 2003-08-29 | 2005-03-24 | Showa Aluminum Kan Kk | Can lid for beverage and beverage can |
| JP2007526859A (en) * | 2003-09-30 | 2007-09-20 | コンテナ・ディベロップメント・リミテッド | Can shell and double winding can end |
| US20090020543A1 (en) * | 2004-09-27 | 2009-01-22 | Ball Corporation | Container End Closure With Improved Chuck Wall and Countersink |
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| JP2011189986A (en) | 2011-09-29 |
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