JPS623839A - Production of can body for three-pieces can - Google Patents
Production of can body for three-pieces canInfo
- Publication number
- JPS623839A JPS623839A JP4726686A JP4726686A JPS623839A JP S623839 A JPS623839 A JP S623839A JP 4726686 A JP4726686 A JP 4726686A JP 4726686 A JP4726686 A JP 4726686A JP S623839 A JPS623839 A JP S623839A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- opening
- small diameter
- forming
- outer mold
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は９、少なくとも一方の開口部側に傾斜部を備え
る飲料缶などに用いるスリーピース缶用の缶胴の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a can body for a three-piece can used for beverage cans and the like having a sloped portion on at least one opening side.
（従来の技術）
近年、金属製飲料缶などにおいて、趣味感の多様化によ
り変形缶が多用されるようになって来た。(Prior Art) In recent years, deformed metal cans have come into widespread use due to the diversification of tastes.
その一種として缶胴の開口部に向って缶胴径が次第に小
径となるなめらかな傾斜部を備えるツーピースの変形缶
は知られている。このツーピースの変形缶の製造方法と
しては、特開昭５７−５０１７６８号公報にみられるよ
うに第４図Ａ示の如く、缶ｒ！Ａａの開口部す側に絞込
加工を施して段部Ｃを備える複数の小径ｌｄを形成し、
次いでこの缶１Ｓ１１ａの開口部すの外方より加工ロー
ルｅを当接させてこの加工ロールｅで段部Ｃおよび小径
部ｄを缶１１１ａの内方へ押圧して第４図Ｂ示の如く傾
斜部ｆを形成する方法が提案されている。As one type of can, a two-piece deformable can is known, which has a smooth slope where the diameter of the can body gradually decreases toward the opening of the can body. As a method for manufacturing this two-piece deformed can, as shown in FIG. A narrowing process is performed on the opening side of Aa to form a plurality of small diameters ld each having a stepped portion C;
Next, a processing roll e is brought into contact with the opening of the can 1S11a from the outside, and the processing roll e presses the stepped portion C and the small diameter portion d inward of the can 111a to tilt it as shown in FIG. 4B. A method of forming part f has been proposed.
しかしながら、このような製造方法によるときは、缶胴
ａの間口部す側の段部および小径部ｄを加工ロールｅで
抑圧して傾斜部ｆを形成させる際、傾斜部ｔに連なる端
部ｑの開口径りが缶１１１８の内方に加工ロールｅの押
圧力で縮径される。すなわち多段の小径部ｄが平坦化さ
れると共に缶胴ａの開口部すの開口径１も縮少される。However, when such a manufacturing method is used, when the step part and the small diameter part d on the frontage side of the can body a are suppressed by the processing roll e to form the slope part f, the end part q connected to the slope part t is The opening diameter of the can 1118 is reduced inward by the pressing force of the processing roll e. That is, the multi-stage small diameter portion d is flattened and the opening diameter 1 of the opening of the can body a is also reduced.
従って缶用材料がアルミニウムの如く柔かい絞込加工性
の良い材料を用いた場合は前記製造方法は好適である。Therefore, the above manufacturing method is suitable when the can material is a soft material with good drawing workability, such as aluminum.
しかしながら缶胴材料が７ ブリキ板、ティン・フリー
・スチール板のように硬くかつ絞込加工性がアルミニウ
ム根より劣る材料を用いて缶胴ａの端部ｑを縮径すると
共に段部Ｃおよび小径部ｄに加工ロールｅを押圧して傾
斜を形成するような加工を行なうためには、この加工ロ
ールｅには急激で大きな押圧力が必要となり、加工ロー
ルｅにも複雑な動きが必要である。そのため装置は複雑
となり、更に前記の急激で押圧加工により缶胴ａの傾斜
部ｆや開口端部にしわが発生して外観を損うという問題
がある。However, when the can body material is 7, the diameter of the end q of the can body a is reduced by using a material such as a tin plate or tin-free steel plate, which is hard and has inferior drawing workability to an aluminum base. In order to press processing roll e to form an inclination on part d, a sudden and large pressing force is required for processing roll e, and complex movement is also required for processing roll e. . Therefore, the apparatus becomes complicated, and furthermore, there is a problem that wrinkles are generated in the inclined part f and the opening end of the can body a due to the sudden pressing process, which impairs the appearance.
このにうな急激で大きな押圧力によるしわを避けるため
には極めて徐々に大きな押圧力を加えることが必要とな
り製造効率が極めて低下するという不都合がある。In order to avoid wrinkles due to such a sudden and large pressing force, it is necessary to apply a large pressing force very gradually, which is disadvantageous in that manufacturing efficiency is extremely reduced.
（発明が解決しようとする問題点）
本発明はかかる従来の問題を解消し、缶胴の形状に変化
を与えた趣味感のあるデザインであって、少なくとも一
方の開口部側になめらかな傾斜部を備えた缶胴をしわを
生ぜしめることなく効率よく製造する方法を提供しよう
とするものである。(Problems to be Solved by the Invention) The present invention solves such conventional problems and has a tasteful design that changes the shape of the can body, and has a smooth slope on at least one opening side. An object of the present invention is to provide a method for efficiently manufacturing a can body having a can body without wrinkles.
（問題点を解決するための手段）
本発明は前記問題点を解消するためになされたものであ
って、両端に開口部を有する缶胴の一端側或は両端側に
缶胴の開口部側に向って缶胴径が次第に小径となる連続
した傾斜部を形成するものにおいて、前記缶胴の一端側
或は両端側に缶胴中央側から開口部側に複数の間隔を存
し、そして開口部側から遠い順に複数回の絞込加工を施
して缶胴中央側から開口部側に向って相隣れる絞込部の
胴径より順次小径で段部を備える複数の小径部を形成す
ると共に、開口部の開口径を前記傾斜部を形成した際の
所定の径に形成し、次いで缶）４の少なくとも一方の開
口部側に形成された前記小径部を缶胴の内外面からロー
ルにより押圧して平坦な傾斜部に形成することを特徴と
する。(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems. A continuous inclined portion in which the diameter of the can body gradually decreases toward the can body is formed, and a plurality of intervals are present at one or both ends of the can body from the center side of the can body to the opening side, and the opening The narrowing process is performed multiple times in order from the can body center side to the opening side to form a plurality of small diameter portions having stepped portions having diameters that are successively smaller than the body diameters of adjacent narrowing portions from the center side of the can body toward the opening side. , the opening diameter of the opening is formed to the predetermined diameter when forming the inclined part, and then the small diameter part formed on at least one opening side of the can (4) is pressed from the inner and outer surfaces of the can body with a roll. It is characterized in that it is formed into a flat inclined part.
（実施例） 以下本発明を図面により説明する。(Example) The present invention will be explained below with reference to the drawings.
第１図ＡないしＦは本発明の缶胴の製造方法の１例であ
り、そしてこの実施例では第３図示のような缶胴（１）
の一端（３）側に開口部（２）側に向って缶胴径が次第
に小径となる連続した傾斜部ａ２を、また缶胴（１）の
他端（４）側に段部（５）を備える複数の小径部（＋１
）を形成づ゛る方法を示づものである。1A to 1F show an example of the method for manufacturing a can body according to the present invention, and in this embodiment, a can body (1) as shown in FIG.
On one end (3) side, there is a continuous sloped part a2 in which the diameter of the can body gradually decreases toward the opening (2) side, and on the other end (4) side of the can body (1) there is a stepped part (5). A plurality of small diameter parts (+1
).
また本発明で用いる缶胴（１）は７ＪＳｉ図Ａ示のよう
に絞り込れる前は一端（３）側から他端（４）側まで同
じ缶胴径Ｗを有する従来多用されるスリーピース缶用の
缶胴であり、缶胴部材の内面および外面に側縁継目部を
除き保護塗料おにび印刷を施し、次いでこれを丸めて側
縁継目部を溶接した両端に開口部（２）を備えた溶接缶
胴が好適である。In addition, the can body (1) used in the present invention is a three-piece can, which is commonly used in the past, and has the same can body diameter W from one end (3) side to the other end (4) side before narrowing as shown in 7JSi figure A. It is a can body, and the inner and outer surfaces of the can body members are printed with a protective coating except for the side edge seams, and then this is rolled up and the side edge seams are welded, and openings (2) are provided at both ends. A welded can body is preferred.
まず、第１図Ｂ示のようにターレットフィダー■に保持
された缶ＩＩ （１）の一端（３）側に第１絞込Ｖｉ、
置■の外型■を、また缶胴（１）の他ｆａ（４）側に保
持装置■の保持部■を同時に缶胴（１）の中央側に前進
させて、第１．１込装置■の案内部■の保持面■に缶Ｉ
ｎ （１）の一端側を、また保持装置■の保持部■の内
面■に缶Ｉｎ （１）の他端（４）側を夫々嵌合させる
。次いで第１絞込装置■の内型のを缶胴（１）の中央側
に前進させて缶胴（１）の一端（３）側の開口部（２）
内に挿入せしめる。そして再び第１１！２込装置■の外
型■を缶Ｊｊｉ （１）の中央側に前進させると、缶胴
（１）の一端（３）は外型■の段部形成面■に沿い続い
て外型■の成形部ωの内周面■に沿ってこの内周面■と
内型のの外周面■とにより形成された間隙■の端部（３
４ａ）まで進められ、これにより第２図示のような長さ
Ｌｌでかつ缶胴径Ｗより小径の胴径唱で段部（５）を備
える第１小径部（６）が形成される。First, as shown in FIG.
At the same time, advance the outer mold ■ of the placed ■ and the holding part ■ of the holding device ■ on the fa (4) side of the can body (1) to the center side of the can body (1), Can I on the holding surface ■ of the guide part ■ of ■.
Fit one end of the can In (1) and the other end (4) of the can In (1) to the inner surface (2) of the holding portion (2) of the holding device (2). Next, the inner mold of the first squeezing device (■) is advanced toward the center of the can body (1) to open the opening (2) on the one end (3) side of the can body (1).
Insert it inside. Then, when the outer mold ■ of the 11th!2-containing device ■ is advanced again toward the center of the can Jji (1), one end (3) of the can body (1) continues along the step forming surface ■ of the outer mold ■. The edge (3
4a), thereby forming a first small diameter portion (6) having a step portion (5) with a length Ll and a diameter smaller than the can body diameter W as shown in the second figure.
次に第１図Ｃ示のように前工程で一端（３〉側に第１小
径部（６）が形成された缶１）１ （１）をターレット
フィダー■で保持し、缶Ｊｉｍ （１）の一端（３）側
に第２絞込装置■の外型呻を、また缶ｌ１１（１）の他
端（４）側に第３絞込装冒■の外型ｃ１１）を同時に缶
胴（１）の中央側に前進させて、第２絞込装首■の案内
部■の保持面■に缶胴（１）の一端（３）側の第１小径
部（６）を、また第３絞込装置■の案内部■の保持面［
株］に缶１ｊｉ（１）の他端（４）側を夫々嵌合させる
。次いで第２絞込装置■の内型〃と、第３絞込装置■の
内型■とを同時に缶胴（１）の中央側に前進させて缶胴
（１）の両開口部（２）内に挿入せしめる。そして再び
第２４１２込装置■の外型（財）と第３絞込装置■の外
型Ｇｌ）とを同時に缶胴（１）の中央側に前進させると
、缶胴（１）の一端（３）は外型４Ｄの段部形成面急に
沿い、続いて外型（資）の成形部器の内周面（１）に沿
ってこの内周面器と内型りの外周面（ト）との間に形成
された間隙□□□の端部（４９ａ）まで進められると共
に、缶胴（１）の他端（４）は外型６１１）の段部形成
面６７）に沿い、続いて外型６１）の成形部ωの内周面
に沿ってこの内周面６１と内型■の外周面■との間に形
成された間隙■の端部Ｑｌ ａ ）まで進められ、これ
により第２図示のような缶ＩＳ１ （１）の第１小径部
（６）に開口部（２）側へ間隔を存して長さ［２でかつ
第１小径部（６）より小径の胴径ＩＬ４２で段部（５）
を備える第２小径部（７）が、また缶胴（１）の他端（
４）側に長さＬ３でかつ缶胴径Ｗより小径の胴径誓３で
段部（５）を備える第２小径部（８）が夫々形成される
。Next, as shown in FIG. At the same time, attach the outer mold of the second squeezing device (c11) to one end (3) side and the outer mold c11) of the third squeezing device (1) to the other end (4) side of the can l11 (1). 1), and place the first small diameter part (6) on the one end (3) side of the can body (1) on the holding surface (■) of the guide part (■) of the second squeezing neck (■), and the third The holding surface of the guide part ■ of the squeezing device ■ [
The other end (4) of the can 1ji (1) is fitted into the can 1ji (1). Next, the inner mold of the second squeezing device ■ and the inner die of the third squeezing device ■ are simultaneously advanced toward the center of the can body (1) to open both openings (2) of the can body (1). Insert it inside. Then, when the outer mold (goods) of the 2412th squeezing device (■) and the outer mold (Gl) of the third squeezing device (■) are simultaneously advanced toward the center of the can body (1), one end (3) of the can body (1) ) is steeply along the stepped part forming surface of the outer mold 4D, and then along the inner peripheral surface (1) of the molding part of the outer mold (material), this inner peripheral surface and the outer peripheral surface (T) of the inner mold. At the same time, the other end (4) of the can body (1) is advanced along the step forming surface 67) of the outer mold 611), and then It is advanced along the inner circumferential surface of the molding part ω of the outer mold 61) to the end Ql a ) of the gap (■) formed between this inner circumferential surface 61 and the outer circumferential surface (■) of the inner mold (■). 2. The first small diameter part (6) of the can IS1 (1) as shown in FIG. Stepped section (5)
The second small diameter portion (7) is also provided with the other end of the can body (1) (
4) A second small diameter portion (8) having a step portion (5) with a length L3 and a body diameter 3 smaller than the can body diameter W is formed on the side.
続いて第１図り示のように前工程で一端（３）側に第１
小径部（６）と第２小径部（７）とが、他端（４）側に
第３小径部（８）が夫々形成された缶ＩＷ （１）をタ
ーレットフィダーωに保持し、缶胴（１）の一端（３）
側に第４絞込装置■の外型■を、また缶１！ｉ （１）
の他端（４〉側に第５絞込装置■の外型■を同時に缶胴
（１）の中央側に前進させて、第４絞込装置Ｉ２Φの案
内部Ωの保持面ωに缶ＩＩ （１）の一端（３）側の第
２小径部（Ｔ）を、また第５１！２込装置■の案内部■
の保持面σのに缶胴（１）の他端（４）側の第３小径部
（８）を夫々嵌合させる。次いで第４絞込装置Ｑ＠の内
型ｅと、第５絞込装置ので内型のとを同時に缶胴（１）
の中央側に前進させて缶１’ｌ （１）の両開口部（２
）内に挿入せしめる。そして再び第４絞込装置■の外型
０と、第５絞込装置■の外型面とを同時に缶ＩＩ （１
）の中央側に前進させると、缶胴（１）の一端（３）は
外型０の段部形成面ωに沿い、続いて外型０の成形部ω
の内周面ωに沿ってこの内周面ωと内型ｅの外周面■と
により形成された間隙■の端部（６９ａ）まで進められ
ると共に、缶ＩＩ！ （１）の他端（４）は外型■の段
部形成面ｎに沿い、続いて外型Ｑの成形部■の内周面の
に沿ってこの内周面のと内型のの外周面■とにより形成
された間隙Ｂの端部（７９ａ）まで進められ、これによ
り第２図示のような缶胴（１）の第２小径部（７）に開
口部（２）側へ間隔を存して艮ざＬ４でかつ第２小径部
（７）より小径の１ｊ１径Ｗ４で段部（５）を備える第
４小径部（９）が、また第３小径部（８）に間口部（２
）側へ間隔を存して長さＬ５でかつ第３小径部（８）よ
り小径の胴径１ｔＪ５で段部（５）を備える第５小径部
ｑＯが夫々形成される。Next, as shown in the first diagram, the first
The small diameter part (6) and the second small diameter part (7) hold the can IW (1), in which the third small diameter part (8) is formed on the other end (4) side, in the turret feeder ω, and the can body (1) One end (3)
The outer mold ■ of the fourth squeezing device ■ is on the side, and can 1! i (1)
At the other end (4> side, the outer mold ■ of the fifth squeezing device ■ is simultaneously advanced toward the center of the can body (1), and the can II is placed on the holding surface ω of the guide portion Ω of the fourth squeezing device I2Φ The second small diameter part (T) on the one end (3) side of (1), and the guide part ■ of the 51st!2-inclusive device ■
The third small diameter portion (8) on the other end (4) side of the can body (1) is fitted into the holding surface σ of the can body (1). Next, the inner die e of the fourth squeezing device Q@ and the inner die of the fifth squeezing device are simultaneously squeezed into the can body (1).
Move the can 1'l forward toward the center of the can (1) and open both openings (2) of the can (1).
). Then again, the outer mold 0 of the fourth squeezing device (■) and the outer mold surface of the fifth squeezing device (■) are simultaneously pressed into the can II (1
), one end (3) of the can body (1) follows the step forming surface ω of the outer mold 0, and then moves along the forming part ω of the outer mold 0.
Can II! is advanced along the inner circumferential surface ω of can II! to the end (69a) of the gap formed by this inner circumferential surface ω and the outer circumferential surface ■ of the inner mold e. The other end (4) of (1) runs along the step forming surface n of the outer mold ■, and then along the inner peripheral surface of the molding part ■ of the outer mold Q. It is advanced to the end (79a) of the gap B formed by the surface (1), thereby creating a gap toward the opening (2) in the second small diameter part (7) of the can body (1) as shown in the second figure. The fourth small diameter part (9) has a stepped part (5) with a width L4 and a diameter W4 of 1j1 smaller than the second small diameter part (7), and also has a frontage part (5) in the third small diameter part (8). 2
A fifth small diameter part qO is formed with a step part (5) having a length L5 and a body diameter 1tJ5 smaller than that of the third small diameter part (8) with a space therebetween.
以上の工程で第２図示のように缶胴（１）の両開口部（
２）側に段部（５）を備える複数の小径部Ｇ１）が、か
つ次に述べる傾斜部（ｌｚを形成した際の所定の開口部
（２）の開口径Ｗｘと同一径の第４小径部（９）の胴径
−４が形成された缶胴（１）を製造する。Through the above steps, both openings of the can body (1) (
2) A plurality of small diameter portions G1) having a stepped portion (5) on the side, and a fourth small diameter having the same diameter as the opening diameter Wx of the predetermined opening portion (2) when forming the slope portion (lz) described below. A can body (1) having a body diameter of -4 in part (9) is manufactured.
そして第３図示のように缶ｌｌ４（１）の一端（３）側
になめらかな傾斜部ａｚを形成するには、まず第１図Ｅ
示のように前工程で得られた缶ｌ１１（１＞をターレッ
トフィダー■により保持させ、この保持された缶胴（１
）の一端（３）側に傾斜部形成面■を備える外型■と、
この外型■の傾斜部形成面■に対応する形状の形成面（
へ）を廂える内型■とから構成されたロール成形装置油
を、また缶胴（１）の他端（４）側に保持菰買ωの保持
部勿を同時に前進させて、ロール成形装置（へ）の内型
例を缶胴（１）の一端（３）側の開口部（２）内に挿入
せしめると共に、外型■の傾斜部形成面■に一端（３）
側の多段の小径部（Ｆを嵌合させ、また保持装首缶の保
持部勿の内面ωに缶胴（１）の他端（４）側の多段の小
径部ａ１を嵌合させる。続いて第１図Ｆ示のようにロー
ル成形装置６ｖの外型傍と保持装置缶とを内径（ハ）に
向って移動して軸心を偏心させ、外型勿の傾斜部形成面
岱を内型（ハ）の形成面■側に圧接し、次いで内型（２
）を回転させると外型■は偏心状態で内型（ハ）と共に
回転し、外型■の傾斜８１Ｓ形成面（ハ）と内型（ハ）
の形成面待との間で缶胴（１）の一端（３）側の多段の
小径部（１１）はその全周に亘って順次挟圧され、第３
図示のように缶胴（１）の一端（３）側に所定の開口径
Ｗｘを有し缶Ｉｌｌ （１）の中央側から開口部（２）
側に向って缶胴径が次第に小径となる連続した長さ［Ｘ
の傾斜部ｑつを形成する。In order to form a smooth slope az on the one end (3) side of the can ll4 (1) as shown in Figure 3, first
As shown, the can l11 (1) obtained in the previous step is held by the turret feeder ■, and this held can body (1
) an outer mold ■ having a slope forming surface ■ on one end (3) side;
A forming surface with a shape corresponding to the slope forming surface ■ of this outer mold ■ (
The oil is applied to the roll forming device consisting of the inner mold (2) that holds the can body (1), and the holding part of the can body (1) is moved forward at the same time. Insert the inner mold example (f) into the opening (2) on the one end (3) side of the can body (1), and insert one end (3) into the slope forming surface ■ of the outer mold ■.
Fit the multi-stage small diameter part (F) on the side, and also fit the multi-stage small diameter part a1 on the other end (4) side of the can body (1) into the inner surface ω of the holding part of the holding neck can. Then, as shown in FIG. 1F, move the outer mold side of the roll forming device 6v and the holding device can toward the inner diameter (c) to eccentrically center the axis, and move the slope forming surface trough of the outer mold to the inner diameter. Press the forming surface ■ side of the mold (C), then press the inner mold (2)
) is rotated, the outer mold ■ rotates together with the inner mold (c) in an eccentric state, and the inclined 81S forming surface (c) of the outer mold ■ and the inner mold (c)
The multi-stage small diameter part (11) on the one end (3) side of the can body (1) is sequentially compressed over its entire circumference between the forming face and the third part.
As shown in the figure, the can body (1) has a predetermined opening diameter Wx at one end (3) side, and an opening (2) is formed from the center side of the can Ill (1).
The continuous length [X
q slopes are formed.
第４図は、第１図Ｅ及びＦと同様に第３図示のなめらか
な傾斜部０を形成する他の実施例を示すもので、第４図
△示のように前工程で得られた缶胴（１）をターレット
フィダー■により保持させ、この保持された缶胴（１）
の−喘（３）側にロール成形装置油を挿着し他端（４）
側に保持装置缶を挿着する。更に詳細には、ロール成形
装置油の外型■を缶１）１（１）の一端（３）側の小径
部的の外側に傾斜部形成面８を一致させて配置し、内型
例を缶胴（１）中に挿入し、前記傾斜部形成面（ハ）に
対応する形状の、形成面■を小径部（ＩＩに一致させて
配置する一方、保持装置ωの内型■を缶″Ｉｌｌ （１
）の他端（４）側から缶胴（１）に挿入し、ロール成形
装置（へ）の内型（ハ）と突き合わせ、同時に保持装置
缶の外型■も缶胴（１）の外周に配置する。このとき、
保持装置缶の内型■に形成した缶胴（１）の他端（４）
側の小型部０ｖに対応する形状の圧着面のは該小型部（
Ｉｖと一致した位置にある。FIG. 4 shows another example in which the smooth slope 0 shown in FIG. 3 is formed similarly to FIG. 1 E and F. The can body (1) is held by a turret feeder ■, and this held can body (1)
Insert roll forming equipment oil into the pan (3) side and the other end (4).
Insert the retainer can on the side. More specifically, the outer mold (2) of the oil roll forming apparatus is arranged with the inclined part forming surface 8 aligned with the outside of the small diameter part on the one end (3) side of the can 1) 1 (1), and the inner mold example is It is inserted into the can body (1), and the forming surface (2), which has a shape corresponding to the inclined part forming surface (c), is arranged so as to match the small diameter part (II), while the inner mold (2) of the holding device ω is inserted into the can. Ill (1
) into the can body (1) from the other end (4) side, and butt it against the inner mold (c) of the roll forming device (b), and at the same time insert the outer mold of the holding device can into the outer periphery of the can body (1). Deploy. At this time,
The other end (4) of the can body (1) formed in the inner mold ■ of the holding device can
The crimping surface of the shape corresponding to the small part 0v on the side is the small part (
It is located in the same position as Iv.
次いで第４図Ｂ示の如く、保持装置缶の外型■を内型■
へ移動して偏心させて圧着１面■と、保持装置［有］の
内型ωとにより缶ＩＩＩ （１）を挾持させる。このと
き保￥ｊ装置缶の内型ωの圧着面■は小径部（１つの内
面形状に沿って嵌合する。Next, as shown in Figure 4B, the outer mold ■ of the holding device can is inserted into the inner mold ■.
The can III (1) is then held eccentrically by the crimping surface 1 and the inner mold ω of the holding device. At this time, the crimping surface ■ of the inner mold ω of the maintenance can is fitted along the small diameter portion (one inner surface shape).
続いて第４図Ｃ示のように両内型（へ）■を回転させて
缶胴（１）を両内型６０ωの軸心の周りを偏心状態で回
転させ、その後、ロール成形装置油の外型■を内型（ハ
）側へ移動して軸心を偏心させて、外型■の傾斜部形成
面■を内型例の形成面■側へ圧接し、これに伴って外型
■も回転し外型■の傾斜部形成面■と内型［有］の形成
面（へ）との間で小径部０つはその全周に亘って順次挟
圧され、第３図示のように化１胴（１〉の一端（３）側
に所定の開口径ΔＸを有し１ｌＦｉＩＳ１ （１）の中
央側から開口部（２）側に向って缶胴径が次第に小径ど
なる連続した長さし×の傾斜部（ＩＺを形成する。Next, as shown in Fig. 4C, both inner molds are rotated to eccentrically rotate the can body (1) around the axes of both inner molds 60ω, and then the roll forming equipment oil is turned off. Move the outer mold ■ to the inner mold (C) side, eccentrically center the axis, and press the slope forming surface ■ of the outer mold ■ to the forming surface ■ of the inner mold example, and as a result, the outer mold ■ The small diameter part 0 is also rotated, and the small diameter part 0 is successively compressed over its entire circumference between the inclined part forming surface ■ of the outer mold ■ and the forming surface (to) of the inner mold [present], as shown in the third figure. A continuous length that has a predetermined opening diameter ΔX on one end (3) side of the can body (1) and the diameter of the can body gradually decreases from the center side of the can body (1) toward the opening (2) side. × sloped portion (forms IZ).
以上の工程により第３図示のように缶胴（１）の一端（
３）側に傾斜部ａｚをまた他端（４）側に多段の小径部
ａｔが形成された缶１１１＜１）を製造する。Through the above steps, one end of the can body (1) (
A can 111<1) is manufactured in which a sloped portion az is formed on the 3) side and a multi-stage small diameter portion at is formed on the other end (4) side.
かくするときは、缶胴径Ｗと開口部（２）の開口径Ｗｘ
との差が顕著であっても、多段の小径部ａυを形成した
後に缶胴（１）の内外面からロール成形装置油の外型器
と内型（ハ）とで押圧して平坦な傾斜部ｌ′１つの形成
を行なうためブリキ板、ティン・フリー・スヂル板のよ
うな硬く、絞込加工性がアルミニウム板より劣る缶胴材
料を用いても材料に急１１１ｉな圧縮歪を与えないので
傾斜部Ｏｂや開口端部にしわを生ぜしめることなく、か
つ所定の間口部（２）の開口径見×を予め形成された小
径部０ｖの胴径−４を変えることなしに連続して効率よ
く製造出来る。When doing so, the can body diameter W and the opening diameter Wx of the opening (2)
Even if there is a significant difference from Since only one part l' is formed, even if a can body material such as a tin plate or a tin-free steel plate is used, which is hard and has inferior drawing workability to an aluminum plate, a sudden compressive strain of 111i will not be applied to the material. Continuously and efficiently without creating wrinkles in the inclined part Ob or the opening end, and without changing the opening diameter x of the predetermined frontage part (2) from the body diameter - 4 of the pre-formed small diameter part 0v. Can be manufactured well.
前記図示実施例では缶胴（１）の一端（３）側に傾斜部
（１２１をまた他端（４）側に多段の小径部（１１）を
形成させたが、他端（４）側に開口部ａつ側に向って缶
胴径が次第に小径となる連続した傾斜部を、一端（３）
側に傾斜部（１２１を形成する際にこの傾斜部ａツの形
成と同様の方法および装置を用いて形成させても良い。In the illustrated embodiment, an inclined part (121) is formed on one end (3) side of the can body (1) and a multi-stage small diameter part (11) is formed on the other end (4) side. At one end (3), connect a continuous slope where the diameter of the can body gradually decreases toward the opening a side.
When forming the sloped portion (121) on the side, the same method and apparatus as those for forming the sloped portion A may be used.
また図示実施例では一端（３）側の傾斜部Ｉ′ｌｚの長
さし×を他端（４）の多段の小径部ａｔの長さＬＶより
艮く形成させたが、両者の長さ［Ｘと［ｙとを同一長さ
に形成させても良い。Further, in the illustrated embodiment, the length x of the inclined portion I'lz on the one end (3) side is formed to be much larger than the length LV of the multi-stage small diameter portion at on the other end (4), but the length of both [ X and [y may be formed to have the same length.
前記実施例のように小径部ａｖを形成する各絞込工程に
おいて、その絞込工程毎の
を、その絞込工程前の縮径率より順次小さくすれば一端
（３）側、他端（４）側に小径部（１１）を形成させる
ための絞込成形加圧を順次大きくする必要もなく、かつ
段部（５）にしわを生ぜしめるようなことかない。In each narrowing step of forming the small diameter portion av as in the above embodiment, if the diameter reduction rate for each narrowing step is made smaller than the diameter reduction rate before the narrowing step, one end (3) side and the other end (4 ) There is no need to gradually increase the drawing pressure to form the small diameter portion (11) on the side, and wrinkles do not occur in the stepped portion (5).
また本製造方法によって得られた缶胴（１）は傾斜部（
Ｉｚの形成後続いて間口部（２）の両端にフランジ部を
形成せしめる乙のであるが、該両端に同時にフランジ部
を形成する従来の装置にそのまま接続出来て、製造工程
および作業性の点でもメリットが大ぎい。Moreover, the can body (1) obtained by this manufacturing method has an inclined part (
After forming Iz, flanges are formed at both ends of the frontage (2), but it can be directly connected to a conventional device that forms flanges at both ends at the same time, which is advantageous in terms of manufacturing process and workability. It's big.
（発明の効果）
このように本発明によるどきは、缶胴の一端側或は両端
側に化ｌ中央側から開口部側に複数の間隔を存し、そし
て開口部側から遠い順に複数回の絞込加工を施して缶Ｉ
Ｓ１中央側から開口部側に向って相隣れる絞込部の胴径
より順次小径で段部を備える複数の小径部を形成すると
共に、開口部の開口径を前記傾斜部を形成した際の所定
の径に形成し、次いで１ＥＩ４の少なくとも一方の間口
部側に形成された前記小径部を缶胴の内外面からロール
により押圧して平坦な傾斜部に形成することによりスリ
ーピース缶用の缶胴を製造する。従ってまず缶胴の一端
側或は両端側に多段の小径部を形成し、次いでこの多段
の小径部を缶胴の内外面から押圧して傾斜部を形成させ
るようにしたので、缶胴径と間口部の開口径との差が顕
著であっても、所定の開口径を備え、傾斜部や開口端部
にしわがなく外観的に優れた缶胴を連続して効率よく製
造出来る等の効果がある。(Effects of the Invention) As described above, the container according to the present invention has a plurality of intervals from the center side to the opening side on one end side or both ends of the can body, and multiple intervals in the order of distance from the opening side. Can I with narrowing process
S1 Form a plurality of small diameter portions each having a stepped portion having a smaller diameter than the body diameter of the adjacent constriction portion from the center side toward the opening side, and set the opening diameter of the opening portion to the same diameter as that when forming the slope portion. A can body for a three-piece can is formed by forming the can body to a predetermined diameter, and then pressing the small diameter portion formed on at least one frontage side of 1EI4 with a roll from the inner and outer surfaces of the can body to form a flat inclined portion. Manufacture. Therefore, first, a multi-stage small diameter section is formed on one or both ends of the can body, and then the multi-stage small diameter section is pressed from the inner and outer surfaces of the can body to form an inclined section. Even if there is a noticeable difference in the opening diameter at the frontage, it is possible to continuously and efficiently manufacture can bodies with a predetermined opening diameter and excellent appearance without wrinkles on the slope or opening end. be.
第１図は本発明の製造方法の１例を説明するための線図
、第２図は第１図ＡないしＤの製造方法の途中過程にお
ける缶胴の１例を示す武断側面図、第３図は第１図の製
造方法によって、得られた缶胴の１例を示す武断側面図
、第４図は他の実施例の製造方法を説明するための線図
、第５図は従来例の部分截断側面図である。
（１）・・・缶胴 （２）・・・開口部 （３）・
・・一端（５）・・・段部 （＋１）・・・小径部
ｌ′１３・・・傾斜部外 ２ 石
第２図FIG. 1 is a diagram for explaining one example of the manufacturing method of the present invention, FIG. 2 is a cross-sectional side view showing an example of a can body in the middle of the manufacturing method shown in FIGS. 1A to D, and FIG. The figure is a cross-sectional side view showing one example of a can body obtained by the manufacturing method shown in Figure 1, Figure 4 is a diagram for explaining the manufacturing method of another example, and Figure 5 is a diagram of the conventional example. FIG. 3 is a partially cutaway side view. (1)...Can body (2)...Opening (3)・
...One end (5)...Stepped part (+1)...Small diameter part
l'13...Outside the slope 2 stone figure 2
Claims (1)
開口部側に向って缶胴径が次第に小径となる連続した傾
斜部を形成するものにおいて、前記缶胴の一端側或は両
端側に缶胴中央側から開口部側に複数の間隔を存し、そ
して開口部側から遠い順に複数回の絞込加工を施して缶
胴中央側から開口部側に向って相隣れる絞込部の胴径よ
り順次小径で段部を備える複数の小径部を形成すると共
に、開口部の開口径を前記傾斜部を形成した際の所定の
径に形成し、次いで缶胴の少なくとも一方の開口部側に
形成された前記小径部を缶胴の内外面からロールにより
押圧して平坦な傾斜部に形成することを特徴とするスリ
ーピース缶用の缶胴の製造方法。In a can body having an opening at both ends, a continuous inclined portion is formed on one end side or both ends of the can body, the diameter of the can body becoming gradually smaller toward the opening side of the can body. There are multiple spaces on both ends from the center of the can body to the opening side, and the narrowing process is performed multiple times in order from the center of the can body to the opening side, so that they are adjacent to each other from the center side of the can body toward the opening side. Forming a plurality of small diameter portions each having a stepped portion having a smaller diameter than the body diameter of the narrowing portion, and forming the opening diameter of the opening portion to a predetermined diameter when forming the inclined portion, and then forming at least one of the can bodies. A method for manufacturing a can body for a three-piece can, characterized in that the small diameter portion formed on the opening side of the can body is pressed by rolls from the inner and outer surfaces of the can body to form a flat inclined portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5063885 | 1985-03-15 | ||
| JP60-50638 | 1985-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS623839A true JPS623839A (en) | 1987-01-09 |
| JPH0777652B2 JPH0777652B2 (en) | 1995-08-23 |
Family
ID=12864497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61047266A Expired - Fee Related JPH0777652B2 (en) | 1985-03-15 | 1986-03-06 | Method for manufacturing a can body for a sleep-piece can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0777652B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130306659A1 (en) * | 2012-05-15 | 2013-11-21 | Silgan Containers Llc | Strengthened food container and method |
| US8978922B2 (en) | 2012-05-15 | 2015-03-17 | Silgan Containers Llc | Strengthened food container and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257937A (en) * | 1984-06-05 | 1985-12-19 | Sumitomo Light Metal Ind Ltd | Production of container |
-
1986
- 1986-03-06 JP JP61047266A patent/JPH0777652B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257937A (en) * | 1984-06-05 | 1985-12-19 | Sumitomo Light Metal Ind Ltd | Production of container |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130306659A1 (en) * | 2012-05-15 | 2013-11-21 | Silgan Containers Llc | Strengthened food container and method |
| US8978922B2 (en) | 2012-05-15 | 2015-03-17 | Silgan Containers Llc | Strengthened food container and method |
| US9382034B2 (en) * | 2012-05-15 | 2016-07-05 | Silgan Containers Llc | Strengthened food container and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0777652B2 (en) | 1995-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4148426A (en) | Method and apparatus for manufacturing metal pipe | |
| US5448832A (en) | Method of forming a boss on a plate-like metallic blank, and method of forming a pulley from a metallic plate | |
| EP0936004A3 (en) | Method and apparatus for producing container body end countersink | |
| US4470281A (en) | Method of forming end face wall having concentric recess in tubular workpiece | |
| JP3687007B2 (en) | Manufacturing method of high-pressure gas container | |
| JPS623839A (en) | Production of can body for three-pieces can | |
| JPS6316823A (en) | Manufacture of can drum | |
| GB2356590A (en) | Method of manufacturing preform for connecting rod | |
| JPS63144827A (en) | Manufacture of flanged hollow shaft | |
| JPH105888A (en) | Method and device for sheet metal work | |
| JPH05228568A (en) | Press forming method of axle case | |
| US4016739A (en) | Method of shaping ring blanks | |
| CN86108713A (en) | Multi-point radial milling ring technological process | |
| JPS61232149A (en) | Welded can drum | |
| JPH0890129A (en) | Manufacture of inner ring and outer ring for rolling bearing | |
| JPS61176433A (en) | Manufacture of deformed can | |
| JPH0475094B2 (en) | ||
| JPH0440090B2 (en) | ||
| JPS63278629A (en) | Method and device for pressing circular columnar product having spherical face at both ends | |
| JPH1177202A (en) | Manufacturing device of necking can, and manufacture of necking can | |
| JPH06198351A (en) | Method for coining | |
| SU1313548A1 (en) | Method of producing helical semiraces of ball bearings | |
| JPH06170479A (en) | Manufacture of outer ring of ball bearing | |
| JPS5772735A (en) | Method and apparatus for seaming of seam part of drum | |
| SU1637919A2 (en) | Method of expanding rings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |