JPH11104764A - Method and device for manufacturing can - Google Patents

Method and device for manufacturing can

Info

Publication number
JPH11104764A
JPH11104764A JP26701897A JP26701897A JPH11104764A JP H11104764 A JPH11104764 A JP H11104764A JP 26701897 A JP26701897 A JP 26701897A JP 26701897 A JP26701897 A JP 26701897A JP H11104764 A JPH11104764 A JP H11104764A
Authority
JP
Japan
Prior art keywords
dome
tip
punch sleeve
groove
forming
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.)
Withdrawn
Application number
JP26701897A
Other languages
Japanese (ja)
Inventor
Masahiro Hosoi
正宏 細井
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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 Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP26701897A priority Critical patent/JPH11104764A/en
Publication of JPH11104764A publication Critical patent/JPH11104764A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To mold a reinforced part without generating a fracture at the inner wall. SOLUTION: In this manufacturing method, a punch sleeve 13 is inserted into the inside of a can body 1, and then a can bottom 3 is nipped between the punch sleeve 13 and a dome forming part 21 so as to form a dome part and a circular convex part being arranged around the peripheral edge of the dome part via an inner circumference wall. In this case, the dome part and the circular convex part are formed at the can bottom 3 by inserting a tip inner circumference 13c of the punch sleeve 13 into the tip of the dome forming part 21 with a usage of the punch sleeve 13, wherein an inner groove 13d opening the groove end at the tip is formed at the tip inner circumference 13c, and the dome forming part 21, wherein an outer groove 21c being opposed to the inner groove 13d is formed at the tip outer circumference. Thereafter, a sliding pawl 23b being extruded from the outer circumference of the dome forming part 21 is slid towards the tip side of the dome forming part 21 along the outer groove 21c to form a concave part being dented towards the inner groove 13d side at the inner circumference wall of the circular convex part.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、缶胴の内部側へ凹
むドーム部を缶底に形成するとともに、このドーム部の
周縁に缶軸方向外方へ突出する環状凸部を形成する缶の
製造方法及びその製造装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can having a dome recessed toward the inside of the can body formed on the bottom of the can and having an annular projection projecting outward in the axial direction of the can at the periphery of the dome. The present invention relates to a manufacturing method and a manufacturing apparatus thereof.

【0002】[0002]

【従来の技術】従来、飲料用に用いる缶としては、有底
円筒状に形成した缶胴の開口部に、缶蓋を固定して構成
するアルミ合金製の2ピース缶が知られている。この2
ピース缶の缶胴を製造するには、先ず、絞り装置を用い
てアルミ合金製の素板を打ち抜き・絞り加工してカップ
状部材を成形する。次いで、このカップを保持しつつ内
部にパンチスリーブを挿入して再絞り・しごき加工を施
すとともに、パンチスリーブと同軸上に対向配置した先
端が半球面状のドーム成形部との間にカップの底部を挟
みつつ底部の周縁部を絞って、図8に示す底部形状の缶
胴1を得る。
2. Description of the Related Art Conventionally, as a can used for beverages, there has been known a two-piece can made of aluminum alloy in which a can lid is fixed to an opening of a can body formed into a bottomed cylindrical shape. This 2
To manufacture a can body of a piece can, first, an aluminum alloy base plate is punched and drawn using a drawing device to form a cup-shaped member. Next, while holding this cup, a punch sleeve is inserted into the inside, re-drawing and ironing are performed, and the bottom of the cup is placed between the punch sleeve and the dome-shaped portion having a hemispherical tip that is coaxially opposed to the punch sleeve. Then, the peripheral edge of the bottom is squeezed while sandwiching the can to obtain a bottom-shaped can body 1 shown in FIG.

【0003】従って、缶胴1の缶底3には、缶胴1の内
部側へ球面状に凹んだドーム部5と、このドーム部5の
周縁に連なり缶胴1の外部側へ缶軸方向に突出した環状
凸部(リム)7とが形成される。この環状凸部7は、缶
胴1を直立させた際に接地する脚となり、缶胴1の直立
安定性及び支持強度を向上させる。
Accordingly, a dome portion 5 which is spherically recessed toward the inside of the can body 1 is provided on the can bottom 3 of the can body 1, and is connected to the peripheral edge of the dome portion 5 to extend outside the can body 1 in the axial direction of the can. Is formed with an annular convex portion (rim) 7 protruding from the main body. The annular convex portion 7 serves as a leg that comes into contact with the ground when the can body 1 is upright, and improves the upright stability and support strength of the can body 1.

【0004】[0004]

【発明が解決しようとする課題】ところで、近年、省資
源化や低コスト化の観点から缶の薄肉化が図られてお
り、缶強度が低下することに起因して種々の不都合が生
じている。その一つに、内容物封入後の内圧の作用によ
って缶底3の環状凸部7が、図9の鎖線で示すように下
方へ突出しつつ半径方向外方へ変形する、所謂ボトムグ
ロースがある。このボトムグロースを生じさせる要因の
一つに、環状凸部7の内周壁であるインナーウォール7
aの剛性不足がある。インナーウォール7aは、一方の
周縁が、凹曲面部であるカウンターシンクR部9を介し
てドーム部5に連なるとともに、他方の周縁が、環状凸
部7の先端であるノーズ部7bに連なっている。缶底3
に内圧が作用すると、薄肉のインナーウォール7aには
円周方向の応力と、缶軸方向の応力との平面応力が生じ
る。この時インナーウォール7aの剛性が不足している
と、インナーウォール7aの円周方向、及び缶軸方向に
ひずみが生じ、特に缶軸方向のひずみ(伸び)が大きく
なると、環状凸部7を下方、及び半径方向外方へ変形さ
せることになる。そして、ボトムグロースが生じれば、
缶の全高が高くなり、製品出荷前では、搬送コンベア上
で引っ掛かったり、梱包を困難としたりするなどの問題
を発生させた。このような問題を解消する手段の一つ
に、缶軸方向の剛性を高める補強部位をインナーウォー
ル7aに成形する方策が考えられる。しかしながら、従
来の缶の製造方法では、パンチスリーブと同軸上に対向
配置したドーム成形部との間に底部を挟みつつ底部の周
縁部を絞って環状凸部7を形成するため、例えばドーム
成形部の外周と、パンチスリーブの内周とに補強部成形
用の凹凸部を設け、ドーム部5や環状凸部7の成形と同
時に、インナーウォール7aに凹凸形状の補強部を成形
することとすれば、材料の伸びが大きくなって破断の生
じる問題があった。本発明は上記状況に鑑みてなされた
もので、インナーウォールに破断を生じさせずに補強部
を成形することのできる缶の製造方法及びその製造装置
の提供を目的とするものである。
By the way, in recent years, the thickness of cans has been reduced from the viewpoint of resource saving and cost reduction, and various inconveniences have arisen due to a decrease in can strength. . As one of them, there is a so-called bottom growth in which the annular convex portion 7 of the can bottom 3 is deformed outward in the radial direction while projecting downward as shown by a chain line in FIG. One of the factors that cause this bottom growth is the inner wall 7 which is the inner peripheral wall of the annular projection 7.
There is insufficient rigidity of a. The inner wall 7a has one peripheral edge connected to the dome portion 5 via the countersink R portion 9 which is a concave curved surface portion, and the other peripheral edge connected to the nose portion 7b which is the tip of the annular convex portion 7. . Can bottom 3
When an internal pressure acts on the inner wall 7a, a planar stress of a circumferential stress and a can axial stress is generated on the thin inner wall 7a. At this time, if the rigidity of the inner wall 7a is insufficient, distortion occurs in the circumferential direction of the inner wall 7a and in the can axis direction. In particular, when the distortion (elongation) in the can axis direction increases, the annular convex portion 7 is moved downward. , And radially outward. And if bottom growth occurs,
The total height of the cans has increased, causing problems such as being caught on a conveyor and making packaging difficult before shipping the product. As one of means for solving such a problem, a method of forming a reinforcing portion for increasing rigidity in the axial direction of the can in the inner wall 7a can be considered. However, in the conventional method for manufacturing a can, the annular convex portion 7 is formed by squeezing the peripheral portion of the bottom while sandwiching the bottom between the punch sleeve and the dome forming portion disposed coaxially opposite to each other. If the concave and convex portions for forming the reinforcing portion are provided on the outer periphery and the inner periphery of the punch sleeve, and the dome portion 5 and the annular convex portion 7 are formed, the concave and convex reinforcing portion is formed on the inner wall 7a. However, there has been a problem that the elongation of the material is increased and breakage occurs. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing a can that can form a reinforcing portion without causing a break in an inner wall, and an apparatus for manufacturing the same.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
の本発明に係る缶の製造方法は、先端円筒形状のパンチ
スリーブを缶胴の内部に挿入し、該缶胴の缶底を前記パ
ンチスリーブと先端球面状のドーム成形部との間で挟
み、前記缶底に、前記缶胴の内部側へ凹むドーム部と、
該ドーム部の周縁に内周壁を介して連なり缶軸方向外方
に突出する環状凸部とを成形する缶の製造方法におい
て、先端に溝端を開口する軸線方向の内溝を先端内周に
形成した前記パンチスリーブと、該内溝に対向する外溝
を先端外周に形成した前記ドーム成形部とを用い、前記
パンチスリーブの先端内周を前記ドーム成形部の先端に
挿入することで前記缶底を挟んで該缶底に前記ドーム部
と前記環状凸部とを成形した後、前記ドーム成形部の外
周から突出する摺動爪を前記外溝に沿って該ドーム成形
部の先端側へ摺動させることで該ドーム成形部の外周に
接触した前記環状凸部の内周壁に前記パンチスリーブの
内溝側へ凹む凹部を成形することを特徴とする。
According to the present invention, there is provided a method of manufacturing a can, comprising the steps of: inserting a punch sleeve having a cylindrical tip into a can body; A dome portion sandwiched between a sleeve and a dome-shaped portion having a spherical tip, and recessed toward the inside of the can body, on the bottom of the can,
In a method for manufacturing a can, which forms an annular convex portion which is continuous with the peripheral edge of the dome portion via an inner peripheral wall and protrudes outward in the axial direction of the can, an axial internal groove having a groove end opening at the distal end is formed on the inner periphery of the distal end. By using the punch sleeve and the dome forming portion having an outer groove facing the inner groove formed at the outer periphery of the tip, the inner periphery of the tip of the punch sleeve is inserted into the tip of the dome forming portion to thereby form the bottom of the can. After the dome portion and the annular convex portion are formed on the bottom of the can with the nip therebetween, a sliding claw protruding from the outer periphery of the dome formed portion is slid along the outer groove toward the distal end of the dome formed portion. The recess is formed on the inner peripheral wall of the annular convex portion in contact with the outer periphery of the dome molding portion, the concave portion being recessed toward the inner groove of the punch sleeve.

【0006】この缶の製造方法では、缶底成形加工の第
一段階で、パンチスリーブとドーム成形部とがドーム
部、環状凸部をまず成形し、第二段階で、摺動爪を前進
させて環状凸部の内周壁に凹状の補強部を成形するの
で、ドーム部や環状凸部の成形と、補強部の成形とが段
階的に成形でき、これらを一体固定の金型で同時成形し
た場合に生じる材料の伸びによる破断を防止することが
できる。
In this method of manufacturing a can, in a first stage of the can bottom forming process, a punch sleeve and a dome molding portion first form a dome portion and an annular convex portion, and in a second stage, a sliding claw is advanced. Since the concave reinforcing portion is formed on the inner peripheral wall of the annular convex portion, the forming of the dome portion and the annular convex portion and the forming of the reinforcing portion can be performed in a stepwise manner, and these are simultaneously molded by a mold fixed integrally. Breakage due to elongation of the material that occurs in the case can be prevented.

【0007】本発明に係る缶の製造装置は、先端を缶胴
に挿入する先端円筒形状のパンチスリーブと、該パンチ
スリーブと同軸上に対向配置され球面状の先端を該パン
チスリーブの先端内周に進入させて前記缶胴の缶底にド
ーム部を成形するとともに該ドーム部の周縁に連なる内
周壁を成形するドーム成形部とを備えた缶の製造装置に
おいて、前記パンチスリーブの先端に溝端を開口する軸
線方向の内溝が該パンチスリーブの先端内周に円周方向
で複数形成され、前記ドーム成形部の先端に溝端を開口
する軸線方向の外溝が前記内溝に対向させて該ドーム成
形部の先端外周に形成され、前記外溝の内部で軸線方向
に摺動自在な摺動爪が前記ドーム成形部の外周から突出
可能に設けられていることを特徴とする。
[0007] A can manufacturing apparatus according to the present invention comprises a cylindrical punch sleeve having a tip inserted into a can body, and a spherical tip disposed coaxially opposite the punch sleeve and having a spherical inner tip at the inner periphery of the tip of the punch sleeve. And a dome forming portion for forming a dome portion on the bottom of the can body of the can body and forming an inner peripheral wall connected to the peripheral edge of the dome portion. A plurality of axial inner grooves that are open are formed in the inner circumference at the tip end of the punch sleeve in the circumferential direction, and an axial outer groove that opens a groove end at the tip of the dome molding portion faces the inner groove. A sliding claw formed on the outer periphery of the distal end of the molded portion and slidable in the axial direction inside the outer groove is provided so as to protrude from the outer periphery of the dome molded portion.

【0008】この缶の製造装置では、パンチスリーブの
先端内周に内溝を設け、ドーム成形部の外周に、この内
溝に対向する外溝を設け、この外溝に摺動爪を前後移動
可能に設けたので、成形の第一段階では、摺動爪を後退
させておくことで、ドーム部、環状凸部のみの成形が可
能となり、次段階で摺動爪を前進させることで、凹状の
補強部のみの成形が可能となる。
In this can manufacturing apparatus, an inner groove is provided on the inner periphery of the tip of the punch sleeve, and an outer groove is provided on the outer periphery of the dome forming section, and a sliding claw is moved back and forth in the outer groove. Since the sliding claw is retracted in the first stage of molding, only the dome portion and the annular convex portion can be molded in the first stage of molding, and the concave claw is formed by advancing the sliding claw in the next stage. Only the reinforcing portion can be formed.

【0009】また、前記外溝は、前記ドーム成形部の先
端方向に向けて該ドーム成形部の半径方向外方へ傾斜す
る傾斜面を有し、前記摺動爪は、該傾斜面に平行な摺接
面を有するとともに、前記缶底の内周壁に平行な成形外
面を有するものであることが好ましい。
Further, the outer groove has an inclined surface which inclines radially outward of the dome forming portion toward the tip direction of the dome forming portion, and the sliding claw is parallel to the inclined surface. It is preferable that it has a sliding surface and a molded outer surface parallel to the inner peripheral wall of the can bottom.

【0010】そして、この缶の製造装置では、外溝の傾
斜面に、摺動爪の摺接面を摺動させることで、摺動爪の
先端方向への移動に伴って、摺動爪をドーム成形部の半
径方向外方へ移動することができ、摺動爪の外側に設け
た成形外面をドーム成形部の外周から突出させることが
できる。
In this can manufacturing apparatus, the sliding claw is slid on the inclined surface of the outer groove so that the sliding claw is moved along with the sliding claw in the distal direction. It is possible to move outwardly in the radial direction of the dome forming portion, and the outer forming surface provided outside the sliding claw can be projected from the outer periphery of the dome forming portion.

【0011】[0011]

【発明の実施の形態】以下、本発明に係る缶の製造方法
及びその製造装置の好適な実施の形態を図面を参照して
説明する。図1は本発明に係る製造方法に用いる製造装
置の一部を省略した断面図、図2は図1のパンチスリー
ブを先端側から視た平面図、図3は図1のドーム成形部
を先端側から視た平面図である。製造装置11は、先端
円筒形状のパンチスリーブ13と、このパンチスリーブ
13と同軸上に対向配置したボトム成形部15とから概
略構成してある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method for manufacturing a can and an apparatus for manufacturing the same according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a manufacturing apparatus used in the manufacturing method according to the present invention, in which a part of the manufacturing apparatus is omitted, FIG. 2 is a plan view of the punch sleeve of FIG. 1 viewed from the front end side, and FIG. It is the top view seen from the side. The manufacturing apparatus 11 is generally constituted by a punch sleeve 13 having a cylindrical shape at the tip and a bottom forming portion 15 coaxially and opposed to the punch sleeve 13.

【0012】パンチスリーブ13は、軸線前後方向に移
動可能で、同軸上に配設した不図示の複数の再絞りダイ
スとしごきダイスの貫通孔を通過することで、缶胴1を
外挿した状態で成形する。パンチスリーブ13の先端外
周には、先端に向けて外径が徐々に縮径される凹曲面状
に湾曲した環状の成形面13aを形成してある。また、
パンチスリーブ13の先端面には、嵌入部13bを形成
してある。この嵌入部13bには、ボトム成形部15の
後述するドーム成形部の先端が缶の略板厚分のクリアラ
ンスを有して嵌入するようになっている。
The punch sleeve 13 is movable in the longitudinal direction of the axis, and passes through a plurality of redrawing dies (not shown) arranged coaxially and through holes of an ironing die, so that the can body 1 is extrapolated. Mold with On the outer periphery of the distal end of the punch sleeve 13, an annular molding surface 13a curved into a concave curved surface whose outer diameter is gradually reduced toward the distal end is formed. Also,
A fitting portion 13b is formed on the distal end surface of the punch sleeve 13. The distal end of a dome forming portion of the bottom forming portion 15 described later is fitted into the fitting portion 13b with a clearance substantially corresponding to the plate thickness of the can.

【0013】嵌入部13bの先端内周13cには、パン
チスリーブ13の先端に一方の溝端を開口する軸線方向
の内溝13dを円周方向で複数形成してある。この実施
形態では、図2に示すように、円周方向に等間隔で12
本の内溝13dを設けてある。嵌入部13bの先端内周
13cは、缶底に形成した環状凸部7(図9参照)のイ
ンナーウォール7aに缶胴内側から接触する。従って、
インナーウォール7aは、この内溝13dに一致する部
分が先端内周13cから拘束を受けず、内溝13d側へ
膨出可能となる。
A plurality of axially extending inner grooves 13d are formed in the inner periphery 13c of the fitting portion 13b at the leading end of the punch sleeve 13 so as to open one groove end. In this embodiment, as shown in FIG.
A book inner groove 13d is provided. The tip inner circumference 13c of the fitting portion 13b comes into contact with the inner wall 7a of the annular convex portion 7 (see FIG. 9) formed on the bottom of the can from the inside of the can body. Therefore,
The portion of the inner wall 7a that coincides with the inner groove 13d is not restricted by the inner periphery 13c of the tip, and can swell toward the inner groove 13d.

【0014】一方、ボトム成形部15は、パンチスリー
ブ13と同軸上のドーム成形部21と、このドーム成形
部21の外周に摺動自在に外挿してある摺動筒23と、
この摺動筒23の外周に摺動自在に外挿してあるストッ
パリング25と、このストッパリング25の外周に摺動
自在に外挿してあるアウターリング27とから概略構成
してある。
On the other hand, the bottom forming part 15 includes a dome forming part 21 coaxial with the punch sleeve 13, a sliding cylinder 23 slidably fitted on the outer periphery of the dome forming part 21,
A stopper ring 25 is slidably inserted on the outer periphery of the sliding cylinder 23, and an outer ring 27 is slidably inserted on the outer periphery of the stopper ring 25.

【0015】ドーム成形部21は、基軸21aと、この
先端にボルト29によって固定したベースフォームプラ
グ21bとにより構成してある。ベースフォームプラグ
21bの先端面は、球面状に形成してあり、缶底のドー
ム部の成形面となる。ベースフォームプラグ21bの先
端外周21dには、ベースフォームプラグ21bの先端
に一方の溝端を開口する軸線方向の外溝21cを円周方
向で複数形成してある(図3参照)。この外溝21c
は、上述のパンチスリーブ13に設けた内溝13dと同
数設けてあり、パンチスリーブ13の嵌入部13bをベ
ースフォームプラグ21bに嵌入した状態で、内溝13
dに対向するようになっている。
The dome forming portion 21 is composed of a base shaft 21a and a base foam plug 21b fixed to a tip of the base shaft 21a by a bolt 29. The distal end surface of the base foam plug 21b is formed in a spherical shape and serves as a molding surface of a dome portion at the bottom of the can. A plurality of outer grooves 21c in the axial direction that open one groove end are formed in the distal end outer periphery 21d of the base foam plug 21b in the circumferential direction at the distal end of the base foam plug 21b (see FIG. 3). This outer groove 21c
Are provided in the same number as the inner grooves 13d provided in the above-described punch sleeve 13, and the inner grooves 13d are provided in a state where the fitting portions 13b of the punch sleeve 13 are fitted into the base form plugs 21b.
d.

【0016】即ち、嵌入したパンチスリーブ13の先端
内周13cと、ベースフォームプラグ21bの先端外周
21dとの間には、内溝13dと外溝21cとで挟まれ
る非拘束空間が形成されるようになっている。
That is, an unrestricted space sandwiched between the inner groove 13d and the outer groove 21c is formed between the fitted inner circumference 13c of the punch sleeve 13 and the outer circumference 21d of the base foam plug 21b. It has become.

【0017】この外溝21cの底面は、ベースフォーム
プラグ21bの先端方向に向けて、半径方向外方へ傾斜
する傾斜面21eとなっている。
The bottom surface of the outer groove 21c is an inclined surface 21e inclined radially outward toward the tip of the base foam plug 21b.

【0018】摺動筒23の後端には、鍔状のバネ座23
aを設けてある。このバネ座23aと装置フレームの支
持部31との間には、コイルバネ33を介装してある。
コイルバネ33は、支持部31に対して離れる方向にバ
ネ座23aを付勢することで、通常状態で、摺動筒23
を後方へ付勢している。
At the rear end of the sliding cylinder 23, a flange-shaped spring seat 23 is provided.
a is provided. A coil spring 33 is interposed between the spring seat 23a and the support portion 31 of the apparatus frame.
The coil spring 33 urges the spring seat 23a in a direction away from the support portion 31 so that the sliding cylinder 23
Is biased backward.

【0019】摺動筒23の先端には、ベースフォームプ
ラグ21bの先端に向かって突出する摺動爪23bを外
溝21c内に収容して設けてある。摺動爪23bには外
溝21cの傾斜面21eと平行な摺接面23cを形成し
てあり、摺動爪23bは摺接面23cを傾斜面21eに
摺動して外溝21c内を移動する。また、摺動爪23b
の外周には、パンチスリーブ13の先端内周13cに平
行な成形外面23dを設けてある。
At the tip of the sliding cylinder 23, a sliding claw 23b projecting toward the tip of the base foam plug 21b is provided to be accommodated in the outer groove 21c. The sliding claw 23b is formed with a sliding contact surface 23c parallel to the inclined surface 21e of the outer groove 21c. The sliding claw 23b slides on the sliding contact surface 23c on the inclined surface 21e and moves in the outer groove 21c. I do. Also, the sliding claw 23b
Is formed on the outer periphery with a molding outer surface 23d which is parallel to the inner periphery 13c of the tip of the punch sleeve 13.

【0020】摺動爪23bは、先端が自由端となるとと
もに、基端が薄肉のヒンジ部23eを介して摺動筒23
に連設してある。このヒンジ部23eは、摺動筒23を
バネ鋼などで形成することにより、可撓性を有してい
る。従って、摺動爪23bの先端は、ヒンジ部23eを
境に半径方向に移動可能となっている。摺動爪23b
は、摺動筒23が摺動方向後端に位置する時、ベースフ
ォームプラグ21bの先端より後退した位置に在り、摺
動筒23が摺動方向前端に位置する時、ベースフォーム
プラグ21bの先端に略一致した位置となる。
The sliding claw 23b has a free end at the distal end and a thin cylindrical hinge 23e at the base end.
It is connected to. The hinge portion 23e has flexibility by forming the sliding cylinder 23 with spring steel or the like. Therefore, the tip of the sliding claw 23b is movable in the radial direction with the hinge 23e as a boundary. Sliding claw 23b
Is located at a position retracted from the tip of the base foam plug 21b when the sliding cylinder 23 is located at the rear end in the sliding direction, and is located at the tip of the base foam plug 21b when the sliding cylinder 23 is located at the front end in the sliding direction. The position almost coincides with.

【0021】従って、摺動爪23bの成形外面23d
は、摺動筒23が後端位置の時、ベースフォームプラグ
21bの先端外周21dと略同一面となり、摺動筒23
が前端位置の時、摺接面23cが傾斜面21eを摺動す
ることで、ベースフォームプラグ21bの先端外周21
d(図3参照)から突出した状態に配置される。
Therefore, the outer surface 23d of the sliding claw 23b is formed.
When the sliding cylinder 23 is at the rear end position, it is substantially flush with the outer periphery 21d of the front end of the base foam plug 21b.
Is at the front end position, the sliding contact surface 23c slides on the inclined surface 21e, so that the outer periphery 21 of the distal end of the base foam plug 21b is moved.
d (see FIG. 3).

【0022】アウターリング27は、摺動筒23の外周
に同軸上で外挿した基部27aと、この基部27aに同
軸上で固定したリング部27bとからなる。基部27a
は、摺動筒23の軸線方向に摺動自在となっている。リ
ング部27bは、基部27aが摺動筒23の外周を摺動
することで、ベースフォームプラグ21bの外周側で軸
線前後方向に移動するようになっている。
The outer ring 27 comprises a base 27a coaxially extrapolated around the outer periphery of the sliding cylinder 23, and a ring 27b coaxially fixed to the base 27a. Base 27a
Are slidable in the axial direction of the sliding cylinder 23. The ring portion 27b moves in the axial front-rear direction on the outer peripheral side of the base foam plug 21b as the base portion 27a slides on the outer periphery of the sliding cylinder 23.

【0023】リング部27bの先端面には、先端に向け
て内径が徐々に拡径される凸面状に湾曲した環状の成形
面27cを形成してある。この成形面27cは、パンチ
スリーブ13の先端外周に形成した上述の成形面13a
と嵌合するようになっている。この成形面13a、27
cは、缶底から突出する環状凸部7(図9参照)のアウ
ターウォール7cを成形する。
An annular molding surface 27c having a convex shape whose inner diameter gradually increases toward the distal end is formed on the distal end surface of the ring portion 27b. The molding surface 27c is formed on the molding surface 13a formed on the outer periphery of the tip of the punch sleeve 13.
Is fitted. The molding surfaces 13a, 27
c forms the outer wall 7c of the annular convex portion 7 (see FIG. 9) protruding from the bottom of the can.

【0024】リング部27bと摺動爪23bとの間には
環状の間隙を設けてあり、この間隙には軸線方向に摺動
自在なストッパリング25を挿入してある。ストッパリ
ング25の外周には、フランジ部25aを突設してあ
る。フランジ部25aはアウターリング27の内周に設
けた可動空間27dで前後方向に可動可能であるととも
に、段部27eに当接して前方への摺動が規制されるよ
うになっている。また、アウターリング27の基部27
aと、フランジ部25aとの間にはコイルバネ35を介
装してあり、コイルバネ35はフランジ部25aを前方
へ付勢している。従って、ストッパリング25は、通常
時、コイルバネ35に付勢されて先端をベースフォーム
プラグ21bから突出した状態としている。
An annular gap is provided between the ring portion 27b and the sliding claw 23b, and a stopper ring 25 slidable in the axial direction is inserted into this gap. A flange portion 25a is protruded from the outer periphery of the stopper ring 25. The flange portion 25a is movable in the front-rear direction in a movable space 27d provided on the inner periphery of the outer ring 27, and is prevented from sliding forward by contacting the step portion 27e. Also, the base 27 of the outer ring 27
A coil spring 35 is interposed between a and the flange 25a, and the coil spring 35 urges the flange 25a forward. Accordingly, the stopper ring 25 is normally urged by the coil spring 35 so that the tip protrudes from the base foam plug 21b.

【0025】次に、この製造装置11を用いて缶を製造
する際の作用を図4乃至図7に基づき説明する。図4は
本発明に係る製造装置の缶底成形時の状態を示す要部拡
大断面図、図5は本発明に係る製造装置の凹部成形時の
状態を示す要部拡大断面図、図6は凹部成形時のインナ
ーウォール一部分の変形過程を示す説明図、図7は環状
凸部のインナーウォールに形成した凹部を示す斜視図で
ある。不図示の再絞り・しごき加工部により成形された
缶胴1は、引き続き、ボトム成形部15において、缶底
3の成形を行う。
Next, the operation when a can is manufactured using the manufacturing apparatus 11 will be described with reference to FIGS. 4 is an enlarged sectional view of a main part showing a state of the manufacturing apparatus according to the present invention at the time of can bottom molding, FIG. 5 is an enlarged sectional view of a main part showing a state of the manufacturing apparatus according to the present invention at the time of forming a concave portion, and FIG. FIG. 7 is an explanatory view showing a deformation process of a part of the inner wall at the time of forming the concave portion, and FIG. 7 is a perspective view showing a concave portion formed in the inner wall of the annular convex portion. The can body 1 formed by the re-drawing and ironing processing unit (not shown) continuously forms the can bottom 3 in the bottom forming unit 15.

【0026】ボトム成形部15では、缶胴1の内部に挿
入したパンチスリーブ13を、ボトム成形部15へ向け
て前進移動させる。パンチスリーブ13が前進移動する
と、先ず、パンチスリーブ13の先端が缶底3を介して
ストッパリング25の先端面に当接する。更に、パンチ
スリーブ13を前進させることにより、ストッパリング
25はコイルバネ35に抗して、摺動筒23の後方へ摺
動して後退する。
In the bottom forming section 15, the punch sleeve 13 inserted inside the can body 1 is moved forward toward the bottom forming section 15. When the punch sleeve 13 moves forward, first, the front end of the punch sleeve 13 contacts the front end surface of the stopper ring 25 via the can bottom 3. Further, by moving the punch sleeve 13 forward, the stopper ring 25 slides backward of the sliding cylinder 23 against the coil spring 35 and retreats.

【0027】更に、パンチスリーブ13が前進すると、
パンチスリーブ13の先端外周の成形面13aが、缶底
3を介してアウターリング27の成形面27cに当接す
るとともに、ベースフォームプラグ21bの先端が缶底
3に当接する。この状態で、パンチスリーブ13の前進
に伴い、アウターリング27とストッパリング25とが
後退することで、ベースフォームプラグ21bがパンチ
スリーブ13の嵌入部13bに進入することとなる。
Further, when the punch sleeve 13 moves forward,
The molding surface 13a on the outer periphery of the tip of the punch sleeve 13 contacts the molding surface 27c of the outer ring 27 via the can bottom 3, and the tip of the base foam plug 21b contacts the can bottom 3. In this state, the outer ring 27 and the stopper ring 25 retreat as the punch sleeve 13 advances, so that the base foam plug 21b enters the fitting portion 13b of the punch sleeve 13.

【0028】アウターリング27は、所定距離後退して
基部27aが支持部31に衝接し、後退が阻止される。
ここで、缶底3には、図4に示すようにベースフォーム
プラグ21bの先端球面に沿ったドーム部5が形成され
るとともに、パンチスリーブ13の成形面13aと、ア
ウターリング27の成形面27cとの間で環状凸部7が
成形されることになる。
The outer ring 27 retreats by a predetermined distance, and the base 27a abuts on the support portion 31 to prevent retreat.
Here, as shown in FIG. 4, a dome portion 5 is formed on the can bottom 3 along the tip spherical surface of the base foam plug 21b, and a forming surface 13a of the punch sleeve 13 and a forming surface 27c of the outer ring 27. The annular convex part 7 is formed between the two.

【0029】この時、摺動爪23aは、先端がベースフ
ォームプラグ21bの先端より、後退した位置に在り、
ベースフォームプラグ21bの先端外周には、外溝21
cが存在している。従って、ベースフォームプラグ21
bの先端外周に成形される環状凸部7のインナーウォー
ル7aは、一部分が、図6の破線で示すように、外溝2
1c内へ入り込んだ状態で成形される。
At this time, the tip of the sliding claw 23a is located at a position retracted from the tip of the base foam plug 21b.
An outer groove 21 is formed on the outer periphery of the tip of the base foam plug 21b.
c exists. Therefore, the base foam plug 21
The inner wall 7a of the annular convex portion 7 formed on the outer periphery of the distal end of the outer groove 2b is partially formed as shown by a broken line in FIG.
It is molded in a state of entering into 1c.

【0030】このようにして、ドーム部5、環状凸部7
を缶底3に成形した後、摺動筒23をベースフォームプ
ラグ21bの先端側へ向けて前進させる。摺動筒23の
前進により、摺動爪23aは、外溝21c内を前方へ移
動し、傾斜面21eと摺接面23cを摺動して、ベース
フォームプラグ21bの外周から成形外面23dを突出
させる。
As described above, the dome portion 5 and the annular convex portion 7
Is formed on the can bottom 3, and then the sliding cylinder 23 is advanced toward the distal end side of the base foam plug 21b. As the sliding cylinder 23 advances, the sliding claw 23a moves forward in the outer groove 21c, slides on the inclined surface 21e and the sliding contact surface 23c, and projects the molded outer surface 23d from the outer periphery of the base foam plug 21b. Let it.

【0031】従って、外溝21cに入り込んだインナー
ウォール7aの一部は、今度は摺動爪23aによって外
溝21cから押し出されるように変形され、図6の実線
で示すように、パンチスリーブ13の先端内周13cに
設けた内溝13d内へ押し出されて成形される。これに
より、環状凸部7のインナーウォール7aには、図7に
示すように、インナーウォール7aの一部分を缶胴1内
に凹ませた補強部(凹部)41が成形されることにな
る。
Therefore, a part of the inner wall 7a that has entered the outer groove 21c is deformed this time so as to be pushed out of the outer groove 21c by the sliding claw 23a, and as shown by a solid line in FIG. It is extruded and formed into an inner groove 13d provided in the inner periphery 13c of the tip. As a result, as shown in FIG. 7, a reinforcing portion (recess) 41 in which a part of the inner wall 7a is recessed in the can body 1 is formed on the inner wall 7a of the annular convex portion 7.

【0032】この缶の製造方法によれば、パンチスリー
ブ13とボトム成形部15とにより、第一段階で、ドー
ム部5、環状凸部7を缶底3に成形した後、第二段階
で、摺動爪23aを前進させて、環状凸部7のインナー
ウォール7aに凹部41を成形するので、環状凸部7と
凹部41とを一体固定の金型で同時成形した場合に生じ
る材料の伸びによる破断を防止することができ、凹部4
1を成形してもインナーウォール7aに亀裂の生じるこ
とがない。
According to this method of manufacturing a can, the dome portion 5 and the annular convex portion 7 are formed into the can bottom 3 in the first stage by the punch sleeve 13 and the bottom forming portion 15, and then in the second stage. Since the sliding claw 23a is advanced to form the concave portion 41 in the inner wall 7a of the annular convex portion 7, the elongation of the material caused when the annular convex portion 7 and the concave portion 41 are simultaneously molded by a mold fixed integrally is used. Breakage can be prevented, and the recess 4
No cracks are formed in the inner wall 7a even if 1 is formed.

【0033】そして、ドーム部5、環状凸部7を成形す
る第一段階では、摺動爪23aを後退させてあるため、
インナーウォール7aの一部分(図6の破線部分)を一
旦、外溝21c側へ凹ませ、摺動爪23aを前進させた
段階で、当該部分を内溝13d側へ変形させるので、当
該部分を加工硬化させることができ、高強度の凹部41
を成形することができる。
In the first stage of forming the dome portion 5 and the annular convex portion 7, since the sliding claw 23a is retracted,
A part of the inner wall 7a (broken line in FIG. 6) is once recessed toward the outer groove 21c, and when the sliding claw 23a is advanced, the part is deformed toward the inner groove 13d. High strength recesses 41 that can be cured
Can be molded.

【0034】また、上述の製造装置11によれば、パン
チスリーブ13の先端内周13cに内溝13dを設け、
ベースフォームプラグ21bの外周に、この内溝13d
に対向する外溝21cを設け、この外溝21cに摺動爪
23aを前後移動可能に設けたので、成形の第一段階で
は、摺動爪23aを後退させて、ドーム部5、環状凸部
7を缶底3に成形することができ、その後、摺動爪23
aを前進させることで、次段階で凹部41をインナーウ
ォール7aに成形することができる。
Further, according to the manufacturing apparatus 11 described above, the inner groove 13 d is provided in the inner circumference 13 c at the tip end of the punch sleeve 13,
The inner groove 13d is formed on the outer periphery of the base foam plug 21b.
Is provided with a sliding claw 23a in the outer groove 21c so that the sliding claw 23a can be moved back and forth. In the first stage of molding, the sliding claw 23a is retracted, and the dome portion 5 and the annular convex portion are formed. 7 can be molded into the can bottom 3 and then the sliding claws 23
By moving a forward, the concave portion 41 can be formed in the inner wall 7a in the next stage.

【0035】更に、外溝21cの底面を傾斜面21eで
形成し、この傾斜面21eと平行な摺接面23cを摺動
爪23aに形成したので、傾斜面21eに摺接面23c
を摺動させることにより、摺動爪23aの先端方向の移
動に伴って摺動爪23aの成形外面23dを、ヒンジ部
23dを境に拡径させて、ベースフォームプラグ21b
の外周から突出させることができる。
Further, the bottom surface of the outer groove 21c is formed by an inclined surface 21e, and the sliding contact surface 23c parallel to the inclined surface 21e is formed on the sliding claw 23a.
, The outer shape 23 d of the sliding claw 23 a is enlarged with the hinge portion 23 d as the sliding claw 23 a moves in the distal direction, and the base foam plug 21 b
Can protrude from the outer periphery of the.

【0036】[0036]

【発明の効果】以上詳細に説明したように、本発明に係
る缶の製造方法によれば、パンチスリーブとドーム成形
部とにより、第一段階で、ドーム部、環状凸部を缶底に
成形した後、第二段階で、摺動爪を前進させることによ
り、環状凸部の内周壁に凹状の補強部を成形するので、
環状凸部と補強部とを一体固定の金型で同時成形した場
合に生じる材料の伸びによる破断を防止することがで
き、内周壁に亀裂を生じさせずに補強部を成形すること
ができる。また、本発明に係る缶の製造装置によれば、
パンチスリーブの先端内周に内溝を設け、ドーム成形部
の外周に、この内溝に対向する外溝を設け、この外溝に
摺動爪を前後移動可能に設けたので、成形の第一段階で
は、摺動爪を後退させて、ドーム部、環状凸部のみを缶
底に成形でき、その後、摺動爪を前進させることで、次
段階で凹状の補強部を内周壁に成形することができ、缶
底成形加工の一連の工程で補強部を成形することができ
る。更に、外溝の底面を傾斜面で形成し、この傾斜面と
平行な摺接面を摺動爪に形成したので、傾斜面に摺接面
を摺動させることにより、摺動爪の先端方向の移動に伴
って摺動爪の成形外面をドーム成形部の外周から突出さ
せることができる。
As described above in detail, according to the method for manufacturing a can according to the present invention, the dome portion and the annular convex portion are formed on the bottom of the can in the first stage by the punch sleeve and the dome forming portion. After that, in the second stage, by moving the sliding claw forward, a concave reinforcing portion is formed on the inner peripheral wall of the annular convex portion,
It is possible to prevent breakage due to elongation of the material that occurs when the annular convex portion and the reinforcing portion are simultaneously molded using a mold that is integrally fixed, and the reinforcing portion can be formed without causing cracks in the inner peripheral wall. According to the apparatus for manufacturing a can according to the present invention,
An inner groove is provided on the inner periphery of the tip of the punch sleeve, an outer groove is provided on the outer periphery of the dome forming portion, and an outer groove is provided on the outer groove. In the stage, the sliding claw is retracted, and only the dome portion and the annular convex portion can be formed on the bottom of the can. Then, by moving the sliding claw forward, the concave reinforcing portion is formed on the inner peripheral wall in the next stage. The reinforcing portion can be formed in a series of steps of the can bottom forming process. Furthermore, since the bottom surface of the outer groove is formed by an inclined surface and a sliding contact surface parallel to the inclined surface is formed on the sliding claw, the sliding contact surface is slid on the inclined surface to thereby allow the sliding claw to move in the distal end direction. The outer surface of the sliding claw can be made to protrude from the outer periphery of the dome forming portion with the movement of the sliding claw.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明に係る製造方法に用いる製造装置の一
部を省略した断面図である。
FIG. 1 is a sectional view in which a part of a manufacturing apparatus used in a manufacturing method according to the present invention is omitted.

【図2】 図1のパンチスリーブを先端側から視た平面
図である。
FIG. 2 is a plan view of the punch sleeve of FIG. 1 as viewed from a distal end side.

【図3】 図1のドーム成形部を先端側から視た平面図
である。
FIG. 3 is a plan view of the dome molding portion of FIG. 1 as viewed from the distal end side.

【図4】 本発明に係る製造装置の缶底成形時の状態を
示す要部拡大断面図である。
FIG. 4 is an enlarged sectional view of a main part showing a state of the manufacturing apparatus according to the present invention at the time of can bottom molding.

【図5】 本発明に係る製造装置の凹部成形時の状態を
示す要部拡大断面図である。
FIG. 5 is an enlarged sectional view of a main part showing a state of the manufacturing apparatus according to the present invention at the time of forming a recess.

【図6】 凹部成形時のインナーウォール一部分の変形
過程を示す説明図である。
FIG. 6 is an explanatory view showing a deformation process of a part of the inner wall when forming the concave portion.

【図7】 環状凸部のインナーウォールに形成した凹部
を示す斜視図である。
FIG. 7 is a perspective view showing a concave portion formed in the inner wall of the annular convex portion.

【図8】 従来の缶の缶底を断面で示した側面図であ
る。
FIG. 8 is a side view showing a cross section of a can bottom of a conventional can.

【図9】 従来の缶の缶底の要部拡大図である。FIG. 9 is an enlarged view of a main part of a can bottom of a conventional can.

【符号の説明】[Explanation of symbols]

1 缶胴 5 ドーム部 7 環状凸部 7a インナーウォール(内周壁) 11 製造装置 13 パンチスリーブ 13c 先端内周 13d 内溝 21 ドーム成形部 21c 外溝 21d 先端外周 21e 傾斜面 23b 摺動爪 23c 摺接面 23d 成形外面 41 凹部 DESCRIPTION OF SYMBOLS 1 Can body 5 Dome part 7 Annular convex part 7a Inner wall (inner peripheral wall) 11 Manufacturing apparatus 13 Punch sleeve 13c Tip inner circumference 13d Inner groove 21 Dome forming part 21c Outer groove 21d Tip outer periphery 21e Slope 23b Sliding claw 23c Sliding contact Surface 23d Molded outer surface 41 recess

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 先端円筒形状のパンチスリーブを缶胴の
内部に挿入し、該缶胴の缶底を前記パンチスリーブと先
端球面状のドーム成形部との間で挟み、前記缶底に、前
記缶胴の内部側へ凹むドーム部と、該ドーム部の周縁に
内周壁を介して連なり缶軸方向外方に突出する環状凸部
とを成形する缶の製造方法において、 先端に溝端を開口する軸線方向の内溝を先端内周に形成
した前記パンチスリーブと、該内溝に対向する外溝を先
端外周に形成した前記ドーム成形部とを用い、 前記パンチスリーブの先端内周を前記ドーム成形部の先
端に挿入することで前記缶底を挟んで該缶底に前記ドー
ム部と前記環状凸部とを成形した後、 前記ドーム成形部の外周から突出する摺動爪を前記外溝
に沿って該ドーム成形部の先端側へ摺動させることで該
ドーム成形部の外周に接触した前記環状凸部の内周壁に
前記パンチスリーブの内溝側へ凹む凹部を成形すること
を特徴とする缶の製造方法。
A punch sleeve having a cylindrical tip is inserted into a can body, and a can bottom of the can body is sandwiched between the punch sleeve and a spherical dome-shaped tip. In a method for manufacturing a can, a dome portion recessed toward the inside of the can body and an annular convex portion connected to the periphery of the dome portion via an inner peripheral wall and projecting outward in the axial direction of the can are formed. Using the punch sleeve in which an inner groove in the axial direction is formed in the inner periphery of the tip and the dome forming portion in which an outer groove facing the inner groove is formed in the outer periphery of the tip, forming the inner periphery of the tip of the punch sleeve into the dome. After the dome portion and the annular convex portion are formed on the can bottom with the can bottom sandwiched by being inserted into the tip of the portion, a sliding claw projecting from the outer periphery of the dome forming portion is formed along the outer groove. The dome is slid toward the tip of the A method of manufacturing a can, comprising: forming a concave portion recessed toward the inner groove side of the punch sleeve on an inner peripheral wall of the annular convex portion in contact with an outer periphery of a molded portion.
【請求項2】 先端を缶胴に挿入する先端円筒形状のパ
ンチスリーブと、該パンチスリーブと同軸上に対向配置
され球面状の先端を該パンチスリーブの先端内周に進入
させて前記缶胴の缶底にドーム部を成形するとともに該
ドーム部の周縁に連なる内周壁を成形するドーム成形部
とを備えた缶の製造装置において、 前記パンチスリーブの先端に溝端を開口する軸線方向の
内溝が該パンチスリーブの先端内周に円周方向で複数形
成され、 前記ドーム成形部の先端に溝端を開口する軸線方向の外
溝が前記内溝に対向させて該ドーム成形部の先端外周に
形成され、 前記外溝の内部で軸線方向に摺動自在な摺動爪が前記ド
ーム成形部の外周から突出可能に設けられていることを
特徴とする缶の製造装置。
2. A punch sleeve having a cylindrical tip for inserting the tip into the can body, and a spherical tip disposed coaxially opposite the punch sleeve and having a spherical tip inserted into the inner periphery of the tip of the punch sleeve. A dome forming portion for forming a dome portion on the bottom of the can and forming an inner peripheral wall connected to the periphery of the dome portion; and a dome forming portion for forming an inner peripheral wall. A plurality of circumferentially formed in the inner circumference at the tip of the punch sleeve, and an axial outer groove opening a groove end at the tip of the dome forming part is formed on the outer circumference of the tip of the dome forming part facing the inner groove. An apparatus for manufacturing a can, wherein a sliding claw slidable in an axial direction inside the outer groove is provided so as to protrude from an outer periphery of the dome forming portion.
【請求項3】 前記外溝は、前記ドーム成形部の先端方
向に向けて該ドーム成形部の半径方向外方へ傾斜する傾
斜面を有し、 前記摺動爪は、該傾斜面に平行な摺接面を有するととも
に、前記缶底の内周壁に平行な成形外面を有しているこ
とを特徴とする請求項2記載の缶の製造装置。
3. The outer groove has an inclined surface inclined in a radially outward direction of the dome molding portion toward a tip end direction of the dome molding portion, and the sliding claw is parallel to the inclined surface. 3. The apparatus for manufacturing a can according to claim 2, wherein the apparatus has a sliding contact surface and a molding outer surface parallel to an inner peripheral wall of the can bottom.
JP26701897A 1997-09-30 1997-09-30 Method and device for manufacturing can Withdrawn JPH11104764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26701897A JPH11104764A (en) 1997-09-30 1997-09-30 Method and device for manufacturing can

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26701897A JPH11104764A (en) 1997-09-30 1997-09-30 Method and device for manufacturing can

Publications (1)

Publication Number Publication Date
JPH11104764A true JPH11104764A (en) 1999-04-20

Family

ID=17438921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26701897A Withdrawn JPH11104764A (en) 1997-09-30 1997-09-30 Method and device for manufacturing can

Country Status (1)

Country Link
JP (1) JPH11104764A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2359950A3 (en) * 2010-01-27 2014-01-22 Schuler Pressen GmbH & Co. KG Tool for forming the bottom of a can in the manufacture of cans
FR3107199A1 (en) * 2020-02-18 2021-08-20 Constellium Neuf-Brisach Installation for the manufacture of aluminum or aluminum alloy containers, preferably suitable for containing a beverage, the forming unit of which includes retractable fingers
FR3124958A1 (en) * 2021-07-06 2023-01-13 Constellium Neuf-Brisach Forming die and process for forming a container by such a die.
WO2023195220A1 (en) * 2022-04-04 2023-10-12 東洋製罐株式会社 Bottomed metal cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2359950A3 (en) * 2010-01-27 2014-01-22 Schuler Pressen GmbH & Co. KG Tool for forming the bottom of a can in the manufacture of cans
FR3107199A1 (en) * 2020-02-18 2021-08-20 Constellium Neuf-Brisach Installation for the manufacture of aluminum or aluminum alloy containers, preferably suitable for containing a beverage, the forming unit of which includes retractable fingers
WO2021165615A1 (en) * 2020-02-18 2021-08-26 Constellium Neuf-Brisach Installation for the manufacture of aluminium or aluminium alloy containers, preferably designed to contain a beverage, the forming unit of which comprises retractable fingers
FR3124958A1 (en) * 2021-07-06 2023-01-13 Constellium Neuf-Brisach Forming die and process for forming a container by such a die.
WO2023195220A1 (en) * 2022-04-04 2023-10-12 東洋製罐株式会社 Bottomed metal cylinder

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Effective date: 20041207