JP3125580B2 - Squeezing-ironing can and ironing punch - Google Patents
Squeezing-ironing can and ironing punchInfo
- Publication number
- JP3125580B2 JP3125580B2 JP11335194A JP11335194A JP3125580B2 JP 3125580 B2 JP3125580 B2 JP 3125580B2 JP 11335194 A JP11335194 A JP 11335194A JP 11335194 A JP11335194 A JP 11335194A JP 3125580 B2 JP3125580 B2 JP 3125580B2
- Authority
- JP
- Japan
- Prior art keywords
- ironing
- circumferential
- punch
- chime
- neck
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】 本発明は、炭酸飲料缶、ビール
缶、コーヒ飲料缶、ジュース缶等の缶詰用等のシームレ
ス缶体製造に用いられる絞り−しごき成形缶、および前
記絞り−しごき成形缶製造用のしごきポンチに関する。BACKGROUND OF THE INVENTION The present invention relates to a seamless can for carbonated beverage cans, beer cans, coffee beverage cans, juice cans and the like.
The present invention relates to a drawn-ironed can and an ironing punch for manufacturing the drawn-iron-formed can.
【０００２】[0002]
【従来の技術】 従来の絞り−しごき成形缶形成用のし
ごきポンチは、側壁部の全面が鏡面仕上げされた平滑部
となっていた。そのため絞り−しごき成形缶からしごき
ポンチを抜出す時に、クーラントによる冷却により収縮
した成形缶の内面がポンチ外面に接触した状態で締め付
けるので、両者間の摩擦抵抗が大きく、抜出し性が比較
的悪いという問題があった。最近この問題を解決するた
めの絞り−しごき加工用ポンチとして、側壁部の全面に
わたり、その平滑部の間に多数の点状凹部が形成された
ものが提案されている（特公平１−４６２０５号公
報）。このタイプのしごきポンチによって形成された絞
り−しごき成形缶は、胴壁部の内面全体にわたり上記ポ
ンチの点状凹部に対応する点状突起部が形成されてい
る。2. Description of the Related Art A conventional ironing punch for forming a draw-ironing can has a smooth portion in which the entire side wall is mirror-finished. Therefore, when the ironing punch is extracted from the drawn-ironing molded can, the inner surface of the molded can contracted by cooling with the coolant is tightened in a state where the inner surface is in contact with the outer surface of the punch. There was a problem. Recently, as a punch for drawing and ironing to solve this problem, there has been proposed a punch having a large number of point-like concave portions formed between its smooth portions over the entire side wall (Japanese Patent Publication No. 1-46255). Gazette). This type of ironing aperture formed by the punch - ironing cans, punctate projections corresponding to the point-like recess portion of the punch is formed over the entire inner surface of the barrel wall.
【０００３】 そのためしごき加工時に、上記ポンチの
点状凹部と絞り−しごき成形缶の胴壁部内面の点状突起
部の僅かな隙間に冷却潤滑液が残留し、また上記点状凹
部が形成される際、ポンチの点状凹部から押出された冷
却潤滑液が、ポンチの平滑部と、絞り−しごき成形缶の
胴壁部内面の間に潤滑膜を形成するため、しごき加工後
しごきポンチからの缶胴体の抜出し性に優れているとい
う利点を有する。[0003] Therefore ironing during processing, stop a point-like recesses of the punch - ironing cooling lubricant to a slight gap between the point-like protrusions of the body wall inner surface of the formed can may remain, also the point-like recess is formed When cooling, the cooling lubricating liquid extruded from the point-shaped concave portions of the punch is used to form the smooth portion of the punch and the draw-ironing can.
To form the lubricating film between the body wall inner surface has the advantage of excellent extraction resistance of the can body from the punch and ironing after ironing work.
【０００４】 絞り−しごき成形缶は、通常開口端部に
ネックイン部およびフランジ部を形成され、底部にチャ
イム部を有する環状突部を形成されて、図２に示される
ようなシームレス缶体５となる。その後、内容物を充
填、蓋を二重巻締することによって缶詰が製造される。
このようにして製造された缶詰は通常、多数個が段ボー
ル函に互いに密接して（図５参照）収納された状態で輸
送される。本発明者は、上記の側壁部の全面にわたり多
数の点状凹部が形成されたしごきポンチで形成された絞
り−しごき成形缶より製造された缶詰は、輸送の際の振
動や、卜ラックや船等から搬出の際（函毎放り投げられ
る場合等がある）の衝撃等によって、ネックイン部５c
の直下部近傍やチャイム部５a直上部近傍に凹み部２６
（図５参照）が生じて、凹み部２６の内面塗膜に微細な
クラックが発生して、金属の溶出が生じ易いことを見出
した。 また上記缶詰は、比較的高腐蝕性の内容物、例え
ばコーラ飲料や乳酸菌飲料等を収納した場合に、長期保
存されると、二重巻締部よりの金属の溶出や、時には穿
孔による内容物の漏洩等が生じ易いことを見出した。 A draw-ironed can usually has a neck-in portion and a flange portion formed at an open end and an annular protrusion having a chime portion formed at a bottom portion, thereby forming a seamless can body 5 as shown in FIG. Becomes Thereafter, the contents are filled and the lid is double-sealed to produce a can.
Usually, a large number of cans manufactured in this manner are transported in a state of being housed in a cardboard box in close contact with each other (see FIG. 5). The inventor of the present invention has reported that a canned product manufactured from a drawn-ironed can formed by an ironing punch having a large number of point-shaped recesses formed over the entire surface of the side wall portion can be subjected to vibration during transportation, truck or ship. Neck-in part 5c due to the impact of unloading from the etc. (it may be thrown every box)
The recess 26 is located in the vicinity of the lower part and the upper part of the chime 5a.
(See FIG. 5), and fine cracks were generated in the inner coating film of the concave portion 26, and it was found that metal was easily eluted.
did. In addition, the above-mentioned cans have relatively high corrosive contents, for example,
For example, if cola drinks or lactic acid drinks are stored,
The metal is eluted from the double-wound portion and sometimes
It has been found that leakage of contents or the like due to holes easily occurs.
【０００５】[0005]
【発明が解決しようとする課題】 本発明は、しごき加
工後のポンチよりの抜出しが容易で、しかも缶詰となっ
た後の内容物に対する内面の、特にネックイン部の直下
部近傍やチャイム部直上部近傍に発生した凹み部、及び
二重巻締部に対する耐食性が改善された絞り−しごき成
形缶、および上記絞り−しごき成形缶を製造するための
しごきポンチを提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention is directed to easily pulling out a punch after ironing, and furthermore, an inner surface for contents after canning, particularly in the vicinity of immediately below a neck-in portion or directly at a chime portion. A dent generated near the top, and
It is an object of the present invention to provide a drawn-ironed can having improved corrosion resistance to the double-wound portion and an ironing punch for manufacturing the drawn-iron-formed can.
【０００６】[0006]
【課題を解決するための手段】 本発明の絞り−しごき
成形缶は、ネックイン部およびチャイム部を有するシー
ムレス缶体に形成されるべき絞り−しごき成形缶であっ
て、二重巻締部となるべき周状部分、ネックイン部とな
るべき部分の下端より底部側のほぼ２〜３０ｍｍの周状
部分およびチャイム部となるべき部分の上端より開口端
部側のほぼ２〜３０ｍｍの周状部分が平滑部となってお
り、これら周状部分を除いて胴壁部内面に、はぼ規則的
に配列し、突起高さが約０．５〜５μｍの、多数の、点
状突起部または線状の周状突起部もしくは線状のクロス
ハッチ状突起部が形成されていることを特徴とする（請
求項１）。本明細書において、突起高さは、各突起部の
両縁の裾野を結んだ線に対して、突起部の頂点を通る平
行線を引いた時の、両平行線間の幅（距離）Ｈであると
して定義する（図９，図１０参照）。 The draw-ironed can of the present invention is a drawn-iron-formed can to be formed into a seamless can body having a neck-in portion and a chime portion. A peripheral part to be formed, a peripheral part of approximately 2 to 30 mm on the bottom side from the lower end of the part to be the neck-in part, and a peripheral part of approximately 2 to 30 mm on the open end side from the upper end of the part to be the chime part Is a smooth part
Ri, these circumferential portions body wall inner surface, except for the pot regularly arranged, the projection height of about 0.5 to 5 [mu] m, a large number of punctate projections or linear circumferential protrusion or wherein the cross-hatched projections of the line shape is formed (請
Claim 1) . In this specification, the height of the projection is defined as the width (distance) H between the parallel lines when a parallel line passing through the apex of the projection is drawn with respect to a line connecting the bottoms of both edges of each projection. (See FIGS. 9 and 10 ).
【０００７】本発明の絞り−しごき成形缶製造用しごき
ポンチは、ネックイン部およびチャイム部を有するシー
ムレス缶体に形成されるべき、絞り−しごき成形缶を製
造するためのしごきポンチであって、上記ポンチは、絞
り−しごき成形缶の二重巻締部となるべき周状部分に接
触する部分、ネックイン部となるべき部分の下端より底
部側のほぼ２〜３０ｍｍの周状部分に接触する部分、お
よびチャイム部となるべき部分の上端より開口端部側の
ほぼ２〜３０ｍｍの周状部分に接触する部分が平滑部と
なっており、これら周状部分に接触する部分を除いて、
側壁部表面に、はぼ規則的に配列し、凹み深さが約０．
５〜５μｍの、多数の、点状凹部または線状の周状凹部
もしくは線状のクロスハッチ状凹部が形成されているこ
とを特徴とする（請求項２）。本明細書において、凹み
深さは、各凹部の両縁の裾野を結んだ線に対して、凹部
の最深点を通る平行線を引いた時の、両平行線間の幅
（距離）ｈであるとして定義する（図４参照）。[0007] An ironing punch for producing a drawn-ironed can according to the present invention is an ironing punch for manufacturing a drawn-ironed can which is to be formed into a seamless can body having a neck-in portion and a chime portion, the punch is squeezed - contacts the substantially circumferential portion of 2~30mm ironing double seam portion and the portion that contacts the circumferential portion to be of the formed can, the bottom side of the lower end of the portion to be necked-section The portion that contacts the peripheral portion of approximately 2 to 30 mm on the opening end side from the upper end of the portion and the portion to be the chime portion is a smooth portion
, Except for those parts that contact these peripheral parts ,
It is irregularly arranged on the side wall surface, and the depth of the recess is about 0,0.
A large number of dot-shaped concave portions, linear peripheral concave portions, or linear cross-hatched concave portions of 5 to 5 μm are formed (claim 2) . In the present specification, the depth of the dent is the width (distance) h between the two parallel lines when a parallel line passing through the deepest point of the concave portion is drawn with respect to a line connecting the bases of both edges of each concave portion. It is defined as being present (see FIG. 4).
【０００８】[0008]
【作用】 しごきポンチ１の点状凹部３の深さが約０．
５μｍより浅いと、油溜めとしての機能が十分でなく、
ポンチ１の抜出し性が改善されない。一方上記深さが約
５μｍより大きいと、形成される点状突起部１１が高く
なり過ぎ、絞り−しごき成形缶４の胴壁主部が極く薄い
（例えば０．０８ｍｍ）にも拘らず、ポンチ１を抜出す
時の、つまり点状突起部１１が点状凹部３から抜け出る
時の弾性圧が高くなって、ポンチ抜出しが困難になる。
従って点状凹部３の深さは、約０．５〜５μｍであるこ
とが好ましい。錫めっき鋼板よりなる絞り−しごき成形
缶４の点状突起部１１を有する内面の要部を示した図８
において、４１が地鉄、４２が錫層、４３が化成処理被
膜、４４が塗膜であり、１２が平滑部である。スプレー
塗装によって形成される塗膜４４は、点状突起部１１の
部分、特にその頂部１１aおよびその近傍（以下頂部近
傍とよぶ）における厚さは、平滑部１２における厚さよ
りも薄くなっている。塗膜４４は塗装後、焼付乾燥する
ことによって形成されるが、前記のスプレー塗装時に点
状突起部１１上の塗料が平滑部１２に流れてしまうから
である。点状突起部１１の突起高さＨが約０．５μｍ以
上の場合、その頂部近傍はしごきポンチ１を抜出す際
に、錫層４２が擦り取られ、またその後に形成された化
成処理被膜４３も外面塗装や印刷の際に缶内に挿入され
るマンドレルによって擦り取られて地鉄４１が露出し易
い。同様にして、絞り−しごき成形缶が缶用アルミニュ
ウム合金よりなる場合は、化成処理被膜が上記のマンド
レルによって擦り取られて地金が露出し易い。 The depth of the point-like concave portion 3 of the ironing punch 1 is about 0.
If the depth is less than 5 μm, the function as an oil sump is not sufficient,
The pull-out property of the punch 1 is not improved. On the other hand, the above depth is about
When it is larger than 5 μm, the formed point-like projections 11 are high.
Excessive, the main part of the body wall of the drawn and ironed can 4 is extremely thin
(For example, 0.08mm), remove punch 1
The time, that is, the point-like projection 11 comes out of the point-like concave portion 3
The elastic pressure at the time increases, and it becomes difficult to remove the punch.
Therefore, the depth of the point-like recess 3 should be about 0.5 to 5 μm.
Is preferred. FIG. 8 showing the main part of the inner surface of the draw-ironing can 4 made of tin-plated steel sheet having the point-like projections 11.
In the figure, 41 is a ground iron, 42 is a tin layer, 43 is a chemical conversion coating, 44 is a coating, and 12 is a smooth portion. In the coating film 44 formed by spray coating, the thickness of the point-like projection 11, particularly the top 11 a and its vicinity (hereinafter referred to as the vicinity of the top) is smaller than the thickness of the smooth portion 12. After coating, the coating film 44 is baked and dried.
It is formed by
Paint on the protruding portions 11 flows to the smooth portion 12
It is. When the protrusion height H of the point-like protrusion 11 is about 0.5 μm or more, the tin layer 42 is scraped off when the ironing punch 1 is pulled out near the top, and a chemical conversion coating 43 formed thereafter is formed. Also, the ground iron 41 is easily exposed by being scraped off by the mandrel inserted into the can at the time of outer surface painting or printing. Similarly, when the draw-ironing can is made of an aluminum alloy for a can, the chemical conversion coating is easily scraped off by the above-mentioned mandrel and the base metal is easily exposed.
【０００９】 また上記のように、頂部近傍は化成処理
被膜４３が擦り取られて地金がはぼ露出しているため、
塗膜との密着性が乏しい。そのため頂部近傍は、凹み部
の発生や二重巻締部形成の際の曲げによって、塗膜に微
細なクラックが生じ易い。絞り−しごき成形缶より製造
された缶詰は、前記のように輸送の際の振動や、トラッ
クや船等から搬出の際の衝撃等によって、ネックイン部
５cの直下部近 傍（幅が約２〜３０ｍｍの周状部分）
や、チャイム部５a直上部近傍（幅が約２〜３０ｍｍの
周状部分）に凹み部２６が生ずることがある。 [0009] As described above, the chemical conversion treatment is performed near the top.
Since the coating 43 has been scraped off and the bare metal has been exposed,
Poor adhesion to coating film. Therefore, near the top is a recess
Due to the occurrence of cracks and bending during the formation of the double wound part,
Fine cracks are likely to occur. Squeeze-manufactured from iron cans
As described above, the canned food is subjected to vibration during transportation,
Neck-in part due to the impact of unloading from a ship or ship
Immediately below the near-neighbor of 5c (circumferential portion of the width of about 2 to 30 mm)
And near the chime part 5a immediately above (a width of about 2 to 30 mm
In some cases, the concave portion 26 may be formed in the (circumferential portion).
【００１０】 しかし本発明の絞り−しごき成形缶は、
ネックイン部となるべき部分の下端より底部側のほぼ２
〜３０ｍｍの周状部分の内面、およびはチャイム部とな
るべき部分の上端より開口端部側のほぼ２〜３０ｍｍの
周状部分の内面が、最大高さRｍaxが約０．４μｍ以下
の鏡面仕上げされた平滑部（段落番号００１４参照）と
なっているので、突起高さＨが約０．５μｍ以上の点状
突起部１１に基づく、これらの部分の内面塗膜に微細な
クラック発生等による金属の溶出が生じ難い However, the drawn-ironed can of the present invention is:
Approximately 2 on the bottom side from the lower end of the part that should be the neck-in part
The inner surface of the 部分 30 mm circumference and the chime
About 2 to 30 mm on the open end side from the upper end of the part to be
The inner surface of the circumferential part has a maximum height Rmax of about 0.4 μm or less
Mirror-finished smooth part (see paragraph number 0014)
So that the protrusion height H is about 0.5 μm or more.
Based on the projections 11,
It is difficult for metal to elute due to cracks, etc.
【００１１】 また二重巻締部８のボディフック・ラデ
ィアス部８b（図５参照）のように曲げ延伸が苛酷な部
分に、突起高さＨが約０．５μｍ以上の点状突起部１１
がある場合は、点状突起部１１の上の極く薄い塗膜４４
は微細なクラックを生じ易くなり、毛細管現象によって
侵入した腐蝕性内容液６によって、ボディフック・ラデ
ィアス部（８b）部の点状突起部１１の上面が腐食され
易く、鉄の溶出や、時には孔食による内容液の漏洩が起
こり易い。しかし二重巻締部８となるべき内面周状部分
が平滑であるので、このような溶出や漏洩が起こり難
い。 以上の作用は、絞り−しごき成形缶の胴壁部内面
に、線状の周状突起部もしくは線状のクロスハッチ状突
起部が形成されている場合にも同様である。Further, the body hook and the
Area where bending and stretching are severe, such as bias part 8b (see FIG. 5)
The point-like protrusion 11 having a protrusion height H of about 0.5 μm or more.
If there is, a very thin coating 44 on the dot-like projections 11
Is liable to cause fine cracks, and by capillary action
The corrosive liquid 6 that has penetrated causes the body hook
The upper surface of the point-like projection 11 of the bias portion (8b) is corroded.
It is easy to elute iron and sometimes leakage of the content liquid due to pitting corrosion.
Easy to stiffen. However, the inner circumferential part to be double wound part 8
Is less likely to dissolve or leak
No. The above operation is the same when a linear circumferential protrusion or a linear cross hatch-like protrusion is formed on the inner surface of the body wall of the draw-ironing can.
【００１２】[0012]
【実施例】 図１において、１はしごきポンチであり、
４はしごき加工直後の、錫めっき鋼板よりなる絞り−し
ごき成形缶である。絞り−しごき成形缶４は、しごき加
工後のドーミング加工によって、点線で示すようにチャ
イム部４aを有する環状突部４b（それぞれ図２の５a、
５ｂに対応する）を備える底部が形成される。しごきポ
ンチ１の円筒形状の側壁部１eの、絞り−しごき成形缶
４のほぼネックイン部５c（図２参照）を形成すべき部
分より基部側は、やや直径が小さい細径部となってお
り、テーパ部を介して僅かに直径が大きい大径部と接続
している。このしごきポンチ１の形状に対応して、絞り
−しごき成形缶４の胴壁部４eの 中、ネックイン部５cお
よびフランジ部５d（図２参照）に形成されるべき開口
端部は比較的厚肉（例えば０．１４ｍｍ）で、胴部５e
に形成されるべき胴壁主部は比較的薄肉（例えば０．０
８ｍｍ）になっている。Embodiment In FIG. 1, 1 is an ironing punch,
4 is a drawn-ironed can made of a tin-plated steel sheet immediately after ironing. Stop - ironing cans 4, the doming processing after ironing, the annular projection 4 b (FIG. 2, respectively having a tea <br/> im portion 4 a as shown by the dotted line 5a,
5b ) ( corresponding to 5b ). The base side of the cylindrical side wall 1e of the ironing punch 1 from the portion where the neck-in portion 5c (see FIG. 2) of the draw-ironing can 4 is to be formed is a small diameter portion having a slightly smaller diameter. , Is connected to a large diameter portion having a slightly larger diameter via a tapered portion. Corresponds to the shape of the ironing punch 1, aperture - in the body wall portion 4e of the ironing can 4, the open end portion to be formed in the neck-in portion 5c and the flange portion 5d (see FIG. 2) is relatively thick Meat (for example, 0.14 mm), body 5e
The main part of the body wall to be formed at a relatively thin thickness (for example, 0.0
8 mm).
【００１３】 しごきポンチ１の側壁部１eには、絞り
−しごき成形缶４の二重巻締部８となるべき周状部分４
ｘに接触する周状部分１a、ネックイン部５ｃとなるべ
き周状部分４pの下端４p1より底部側のほぼ２〜３０ｍ
ｍの周状部分４qに接触する周状部分１b、及びチャイム
部４a（５a）となるべき部分の上端４a1より開口端部側
のほぼ２〜３０ｍｍの周状部分４ｓに接触する部分１ｃ
の全面が周状の平滑部２になっている。各周状の平滑部
１a、１ｂ、１ｃの間に、ほぼ規則的に配列し、凹み深
さが約０．５〜５μｍの、多数の、点状凹部が平滑部２
に形成されている。なおチャイム部４aとなるべき断面
湾曲部に接触する底部近傍部も平滑部になっているが、
この部分は側壁部１eではない。特に、形成される絞り
−しごき成形缶４の、内径がポンチ１の大径部より小さ
く、しかも肉厚のネックイン部５ｃとなるべき周状部分
４pに接触すべき周状部分に、このように多数の点状凹
部が形成されているので、ポンチ１の抜き出しが非常に
容易である。何となれば、一般にポンチ１を抜き出す際
の抵抗は、ポンチ１の大径部が、絞り−しごき成形缶４
の内径が比較的小さい厚肉部（開口端部）を通過する時
に、厚肉部による弾性圧縮力が大きいので特に大きくな
る。しかし厚肉部であるネックイン部５ｃとなるべき部
分４ｐの内面に、段落番号００１５に記載のように多数
の点状突起部１１が周状に形成されているので、抜き出
し時のポンチ１との接触が点接触となり、これに応じて
二重巻締部となるべき部分４ｘの平滑な内面も僅かに浮
き離れた状態で油膜を介してポンチ１と接触する。従っ
て厚肉部では極く小さい接触面積で、すなわち極く小さ
い摩擦力でポンチ１が絞り−しごき成形缶４から抜き出
されるからである。 The side wall 1e of the ironing punch 1 has an aperture
A circumferential part 4 to be the double-sealed part 8 of the ironing can 4
x should be the peripheral part 1a and the neck-in part 5c
Approximately 2 to 30m on the bottom side from the lower end 4p1 of the circumferential portion 4p
peripheral part 1b in contact with peripheral part 4q of m, and chime
Open end side from upper end 4a1 of part to become part 4a (5a)
Part 1c that contacts the circumferential portion 4s of approximately 2 to 30 mm
Is a circumferential smooth portion 2. Each circumferential smooth part
1a, 1b, 1c, arranged almost regularly, and
A large number of dot-like concave portions having a thickness of about 0.5 to 5 μm
Is formed. The cross section to be the chime part 4a
Although the bottom part near the curved part is also a smooth part,
This part is not the side wall part 1e. In particular, the aperture formed
The inner diameter of the ironing can 4 is smaller than the large diameter part of the punch 1
And a circumferential portion that should become the thick neck-in portion 5c
In the circumferential part to be in contact with 4p
Since the part is formed, the punch 1 can be pulled out very much
Easy. What happens when pulling out punch 1
The resistance of the punch 1 is that the large diameter portion of the punch 1
When passing through a thick portion (open end) where the inside diameter of the is relatively small
In particular, the elastic compression force of the thick part
You. However, the part to be the neck-in part 5c which is a thick part
As described in paragraph 0015, a large number of
Since the point-like projections 11 are formed in a circumferential shape,
The point of contact with the punch 1 is point contact,
The smooth inner surface of the part 4x that should become the double wound part also slightly floats.
It comes into contact with the punch 1 via the oil film in a separated state. Follow
In the thick part, the contact area is very small, that is,
Punch 1 is drawn out from ironing can 4 with high frictional force
Because it is done.
【００１４】 しごきポンチ１の抜出し性を良好にする
ため、油溜めとして機能する点状凹部３（図３では円形
であるが、楕円形その他の丸みのある適宜の形状であっ
てもよい）の表面に沿う面積は０．０３〜０．８ｍｍ2
（円形の場合は直径ｄは約０．２〜１．０ｍｍ）、深さ
ｈ（図４）は０．５〜５μｍであって、軸方向のピッチ
p（図３）は０．５〜１．５ｍｍで、単位表面積当り１
０〜４０％を占めることが望ましい。平滑部２と点状凹
部３の界面は丸みを有していることが抜出し性を良くす
るために好ましい。なお平滑部２は通常のしごきポンチ
と同様な、最大高さRｍaxが約０．４μｍ以下、好まし
くは０．３μｍ以下の鏡面仕上げとなっている。In order to improve the pullability of the ironing punch 1, a point-like concave portion 3 (which is circular in FIG. 3, but may be an elliptical shape or any other appropriate shape having a round shape) functioning as an oil reservoir is provided. The area along the surface is 0.03-0.8mm 2
(In the case of a circle, the diameter d is about 0.2 to 1.0 mm), the depth h (FIG. 4) is 0.5 to 5 μm, and the pitch in the axial direction is
p (FIG. 3) is 0.5 to 1.5 mm, and 1 per unit surface area.
Desirably, it occupies 0 to 40%. It is preferable that the interface between the smooth portion 2 and the point-like concave portion 3 has a round shape in order to improve the extraction property. The smoothing portion 2 is mirror-finished with a maximum height Rmax of about 0.4 μm or less, preferably 0.3 μm or less, similar to a normal ironing punch.
【００１５】 しごきポンチ１の側壁部１eの表面状態
に対応して、絞り−しごき成形缶４，従って絞り−しご
き成形缶４から形成されたシームレス缶体５は、二重巻
締部８となるべき周状部分４ｘ、ネックイン部５ｃとな
るべき周状部分４pの下端４plより底部側のほぼ２〜３
０ｍｍの周状部分４q、及びチャイム部４a（５a）とな
るべき部分の上端４a１より開口端部側のはぼ２〜３０
ｍｍの周状部分４ｓが、Rｍaxが約０．４μｍ以下の、
好ましくは０．３μｍ以下の平滑部になっている。各周
状の平滑部４ｘ、４ｑ、４ｓの間に、ほぼ規則的に配列
し、突起高さが約０．５〜５μｍの、多数の、点状突起
部１１が周状に形成されている。 そのため絞り−しごき
成形缶４から形成されたシームレス缶体５より製造され
た缶詰９は、輸送中に振動や放り投げ等によて凹み易い
ネックイン部の直下部近傍やチャイム部直上部近傍の凹
み後の耐食性が改善される。また缶詰９は、二重巻締部
８のボディ・ウォール部８aおよびボディフック・ラデ
ィアス部８bが、突起高さＨが０．５μｍ以上の点状突
起部１１を有することなく、Rｍaxが約０．４μｍ以下
の平滑部であるので、鉄の内容物６への溶出や、孔食に
基づく内容物６の漏洩が起こり難い。 Surface condition of side wall 1e of ironing punch 1
Draw- ironing cans 4, corresponding to draw-iron
The seamless can body 5 formed from the molded can 4 has a peripheral portion 4x to be a double-tightened portion 8 and a neck-in portion 5c.
Approximately 2-3 on the bottom side from the lower end 4pl of the peripheral portion 4p to be
A 0 mm peripheral portion 4q and a chime portion 4a (5a) are formed.
2 to 30 on the opening end side from the upper end 4a1 of the portion to be formed
mm of the circumferential portion 4s, Rmax is about 0.4μm or less,
Preferably, it has a smooth portion of 0.3 μm or less. Each lap
Almost regularly arranged between the smooth portions 4x, 4q, and 4s
And a large number of point-like projections having a projection height of about 0.5 to 5 μm.
The part 11 is formed in a circumferential shape. Therefore, aperture-ironing
Manufactured from a seamless can body 5 formed from a molded can 4
Can 9 is likely to be dented by vibration or throwing during transportation
Depression near the bottom of the neck-in or near the top of the chime
The corrosion resistance after removal is improved. In addition, the can 9 is a double winding part
8 body wall 8a and body hook Rade
The bias portion 8b has a point-like protrusion having a protrusion height H of 0.5 μm or more.
Rmax is about 0.4 μm or less without the raised part 11
Because of the smoothness of
Leakage of the contents 6 based on the hardly occurs.
【００１６】 しごきおよびドーミング加工直後に、絞
り−しごき成形缶４は、公知の抜出し装置の爪部と開口
端縁４ｃを係合された状態で、透孔１dからエアを吹き
出しながら、しごきポンチ１を図の左方に移動させるこ
とによってポンチ１から抜出される。抜出された絞り−
しごき成形缶４は、開口端面４ｄとなるべき１点鎖線に
沿ってトリムされた後、潤滑冷却液の洗浄除去、内面の
化成処理被膜形成処理、洗浄乾燥、外面塗装，印刷，焼
付乾燥、内面にエポキシ・アクリル系塗料等の溶剤型塗
料のスプレー塗装、焼付処理を行なわれた後、開口端部
にネックイン部５cおよびフランジ部５dを形成されて、
シームレス缶体５ となる（図２）。 [0016] Immediately after ironing and doming,
The ironing-molded can 4 is formed by a claw and an opening of a known extraction device.
With the edge 4c engaged, air is blown from the through hole 1d.
While pushing out, move ironing punch 1 to the left of the figure.
And the punch 1 is pulled out. The extracted aperture
The ironing can 4 is formed by a one-dot chain line to be the opening end face 4d.
After being trimmed along
Chemical conversion treatment Film formation treatment, washing and drying, exterior coating, printing, baking
Drying, solvent type coating such as epoxy / acrylic paint on inner surface
After spray coating and baking
Formed with a neck-in part 5c and a flange part 5d,
The result is a seamless can 5 (FIG. 2).
【００１７】 シームレス缶体５は、内容物６を充填さ
れた後、蓋７（通常は図示されないプルタブが固着され
ている）とフランジ部５dとの間に二重巻締部８を形成
されて缶詰９（図５参照）となる。 The seamless can 5 is filled with the contents 6.
After the cover 7 is closed, a pull tab (not shown)
) And the flange part 5d to form a double wound part 8
Then, a can 9 (see FIG. 5) is obtained.
【００１８】 図６において、２１はしごきポンチであ
り、２４はしごき加工直後の、錫めっき鋼板よりなる絞
り−しごき成形缶である。絞り−しごき成形缶２４は、
しごき加工後のドーミング加工によって、点線で示すよ
うにチャイム部２４aを有する環状突部（図示されな
い）を備える底部が形成される。しごきポンチ２１の側
壁部２１eには、絞り−しごき成形缶２４の二重巻締部
８となるべき周状部分２４ｘに接触する周状部分２１a,
ネックイン部５ｃとなるべき周状部分２４pの下端２４p
1より底部側のほぼ２〜３０ｍｍの周状部分２４qに接触
する周状部分２１b、、及びチャイム部２４aとなるべき
部分の上端２４a1より開口端部側のはぼ２〜３０ｍｍの
周状部分２４ｓに接触する周状部分２１ｃが全面、周状
の平滑部２２になっている。各周状の平滑部２１a、２
１ｂ、２１ｃの間に、ほぼ規則的に配列し、凹み深さが
約０．５〜５μｍの、多数の、線状の周状凹部が平滑部
２２に形成されている。周状凹部２３は、深さが約０．
５〜５μｍの断面V字状で、ほぼ０．０５〜２．０ｍｍ
の平均間隔で、スパイラル状に形成されており、かつ平
滑部２２と周状凹部２３の境界が丸味を帯びていること
が、しごきポンチ２１の抜出し性を良好にするために好
ましい。しごきポンチ２１の側壁部２１eの表面状態に
対応して、絞り−しごき成形缶２４，従って絞り−しご
き成形缶２４から形成されたシームレス缶体（図示され
ない）の内面には、二重巻締部８となるべき周状部分２
４ｘ、ネックイン部５ｃとなるべき周状部分２４pの下
端２４p1より底部側のほぼ２〜３０ｍｍの周状部分２４
q、及びチャイム部２４aとなるべき部分の上端２４a1よ
り開口端部側のほぼ２〜３０ｍｍの周状部分２４ｓが全
面、Rｍaxが約０．４μｍ以下の、好ましくは０．３μ
ｍ以下の周状の平滑部になっている。各周状の平滑部２
４ｘ、２４ｑ、２４ｓの間に、ほぼ規則的に配列し、突
起高さが約０．５〜５μｍで、平均間隔がはぼ０．０５
〜２．０ｍｍの、多数の、スパイラル状の周状突起部２
５が 平滑部に形成されている。その他の点については、
ポンチ１及び絞りーしごき成形缶４の場合と同様であ
る。 [0018] In FIG. 6, 21 is a punch ironing, just after machining-out 24 ladders, diaphragm made of tin-plated steel sheet - a ironing can. The draw-ironing can 24 is
After the ironing process, the dotted lines indicate
An annular projection having a chime portion 24a (not shown)
) Is formed. The side of ironing punch 21
The wall portion 21e has a double-sealed portion of the draw-ironing can 24.
8, a circumferential portion 21a that contacts the circumferential portion 24x to be
Lower end 24p of circumferential portion 24p to be neck-in portion 5c
Contacting the peripheral part 24q of approximately 2 to 30 mm on the bottom side from 1
To be a circumferential portion 21b and a chime portion 24a
The upper end 24a1 is closer to the open end than the upper end 24a1.
The entire circumferential portion 21c in contact with the circumferential portion 24s has a circumferential shape.
Is a smoothing portion 22. Each circumferential smooth portion 21a, 2
Between 1b and 21c, they are arranged almost regularly, and the dent depth is
A large number of linear concaves of about 0.5 to 5 μm are smooth
22. The circumferential recess 23 has a depth of about 0.5 mm.
5 to 5 μm V-shaped cross section, approximately 0.05 to 2.0 mm
It is preferable that the punching of the ironing punch 21 be good in a spiral shape at an average interval of, and a rounded boundary between the smooth portion 22 and the circumferential concave portion 23. In the surface condition of the side wall 21e of the ironing punch 21
Correspondingly, the draw-ironing can 24, and thus the draw-ladder
Seamless can body (shown in FIG.
No) on the inner surface of the peripheral portion 2 to become the double tightening portion 8
4x, below the circumferential portion 24p to be the neck-in portion 5c
A circumferential portion 24 of approximately 2 to 30 mm on the bottom side from the end 24p1
q and the upper end 24a1 of the portion to be the chime portion 24a
The peripheral portion 24s of approximately 2 to 30 mm on the opening end side
Surface, Rmax is about 0.4 μm or less, preferably 0.3 μm
m or less. Each circumferential smooth part 2
4x, 24q, 24s, arranged almost regularly
The height is about 0.5-5 μm, and the average interval is about 0.05.
A large number of spiral peripheral protrusions 2 of ~ 2.0 mm
5 is formed on the smooth portion. For other points,
Same as for punch 1 and draw-ironing can 4
You.
【００１９】 図７において、３１はしごきポンチであ
り、３４はしごき加工直後の、缶用アルミニュウム合金
（例えば３００３合金）よりなる絞り−しごき成形缶で
ある。 絞り−しごき成形缶３４は、しごき加工後のド
ーミング加工によって、点線で示すようにチャイム部３
４aを有する環状突部（図示されない）を備える底部が
形成される。なお缶用アルミニュウム合金よりなる絞り
−しごき成形缶の場合も、潤滑，冷却液の洗浄後、化成
被膜形成処理を受ける。その後の処理は錫めっき鋼板よ
りなる絞り−しごき成形缶の場合とはぼ同様である。 し
ごきポンチ３１の側壁部３１eには、絞り−しごき成形
缶３４の二重巻締部８となるべき周状部分３４ｘ、ネッ
クイン部３５ｃとなるべき周状部分３４pの下端３４p1
より底部側のほぼ２〜３０ｍｍの周状部分３４qに接触
する周状部分３１b、及びチャイム部３４aとなるべき部
分の上端３４a1より開口端部側のはぼ２〜３０ｍｍの周
状部分３４ｓに接触する部分に接触する周状部分３１a
が全面、Rｍaxが約０．４μｍ以下の、好ましくは０．
３μｍ以下の周状の平滑部３２になっている。 In FIG . 7, reference numeral 31 denotes an ironing punch.
, 34 is a drawn-ironed can made of an aluminum alloy for a can (eg, 3003 alloy) immediately after ironing .
is there. The drawn-ironed can 34 is the iron after the ironing process.
The chime part 3 as shown by the dotted line
The bottom with an annular projection (not shown) having 4a
It is formed. A diaphragm made of aluminum alloy for cans
− For ironed cans, after lubrication and cooling liquid washing,
It undergoes a film formation process. Subsequent processing is tinned steel sheet
This is similar to the case of a squeezed and ironed can. I
The side wall 31e of the iron punch 31 is drawn and ironed.
A circumferential portion 34x to be the double-wound portion 8 of the can 34,
Lower end 34p1 of circumferential portion 34p to be quin portion 35c
Touches the peripheral part 34q of approximately 2 to 30 mm on the bottom side
Part to become the circumferential part 31b and the chime part 34a
Of the opening from the upper end 34a1
Peripheral portion 31a that contacts the portion that contacts the portion 34s
Has an Rmax of about 0.4 μm or less, preferably 0.1 μm or less.
A circumferential smooth portion 32 of 3 μm or less is formed.
【００２０】 各周状の平滑部３１a、３１ｂ、３１ｃ
の間に、ほぼ規則的に配列し、凹み深さが約０．５〜５
μｍの、多数の、線状のクロスハッチ状凹部３３が平滑
部３２に形成されている。線状のクロスハッチ状凹部３
３は、深さが０．５〜５μｍの断面Ｖ字状で、ほぼ０．
０５〜２．０ｍｍの平均間隔で、軸方向に対してほぼ４
５度方向に延びている。このポンチ３１の側壁部３１e
の表面状態に対応して、絞り−しごき成形缶３４，従っ
て絞り−しごき成形缶３４から形成されたシームレス缶
体（図示されない）の内面は、二重巻締部８となるべき
周状部分３４ｘ、ネックイン部５ｃとなるべき周状部分
３４pの下端３４p1より底部側のほぼ２〜３０ｍｍの周
状部分３４q、及びチャイム部３４aとなるべき部分の上
端３４a1より開口端部側のはぼ２〜３０ｍｍの周状部分
３４ｓが全面、Rｍaxが約０．４μｍ以下の、好ましく
は０．３μｍ以下の周状の平滑部になっている。各周状
の平滑部３４ｘ、３４ｑ、 ３４ｓの間に、ほぼ規則的に
配列し、突起高さが約０．５〜５μｍの、多数の、線状
のクロスハッチ状突起部３５が平滑部に形成されてい
る。その他の点については、ポンチ１及び絞りーしごき
成形缶４の場合と同様である。 Each of the circumferential smooth portions 31a, 31b, 31c
Are arranged almost regularly, and the dent depth is about 0.5 to 5
μm, many linear cross-hatched recesses 33
The portion 32 is formed. Linear cross-hatch recess 3
Reference numeral 3 denotes a V-shaped cross section having a depth of 0.5 to 5 μm,
With an average interval of from 0.5 to 2.0 mm, almost 4
It extends in the direction of 5 degrees. Side wall 31e of this punch 31
Corresponding to the surface state of the diaphragm - ironing can 34, followed
Seamless cans formed from squeezed and ironed cans 34
The inner surface of the body (not shown) should be a double wrap 8
The circumferential portion 34x, the circumferential portion to be the neck-in portion 5c
Approximately 2 to 30 mm circumference on the bottom side from the lower end 34p1 of 34p
Part 34q and the part to be the chime part 34a
A circumferential portion of about 2 to 30 mm on the open end side from the end 34a1
34s is the whole surface , Rmax is about 0.4μm or less, preferably
Has a circumferential smooth portion of 0.3 μm or less . Each circumference
Between the smoothing portions 34x, 34q, 34s
Numerous, linear, arrayed, with protrusion heights of about 0.5-5 μm
Cross-hatched protrusion 35 is formed on the smooth portion.
You. For other points, punch 1 and squeeze-iron
This is the same as in the case of the molded can 4.
【００２１】 本発明は、以上の実施例によって制約さ
れるものでなく、例えばシームレス缶体の底部中央はド
ーム状でなく、平坦であってもよい。The present invention is not limited by the above embodiments. For example, the center of the bottom of the seamless can body may be flat instead of dome-shaped.
【００２２】[0022]
【発明の効果】 請求項１に係わる発明の絞り−しごき
成形缶は、しごき加工後のポンチからの抜出しが非常に
容易で、しかも缶詰となった後の内容物に対する内面
の、ネックイン部の直下部近傍やチャイム部直上部近傍
の凹み後の耐食性、および二重巻締部の耐食性が改善さ
れるという効果を奏する。請求項２に係わる発明のしご
きポンチは、しごき加工後の絞り−しごき成形缶からの
抜出しが非常に容易で、しかも缶詰となった後の内容物
に対する内面の、ネックイン部の直下部近傍やチャイム
部直上部近傍の凹み後の耐食性、および二重巻締部の耐
食性が改善された絞り−しごき成形缶を製造することが
できるという効果を奏する。EFFECTS OF THE INVENTION The drawn-ironed can of the invention according to claim 1 is very easy to pull out from the punch after ironing, and furthermore, the inner surface of the contents after the canning is completed. This has the effect of improving the corrosion resistance after dents in the vicinity immediately below the neck-in portion and the vicinity immediately above the chime portion , and the corrosion resistance of the double wound portion . The ironing punch of the invention according to claim 2 is very easy to draw out from the ironing can after drawing and ironing, and furthermore, the inner surface for the contents after being canned, in the vicinity of immediately below the neck-in part, Corrosion resistance after dent near the upper part of the chime part , and resistance of double wound part
This has the effect of producing a drawn-ironed can with improved food properties .
【図１】 本発明の第１の実施例である絞り−しごき成
形缶を製造するためのしごきポンチの正面図である。FIG. 1 is a front view of an ironing punch for producing a draw-ironing can according to a first embodiment of the present invention.
【図２】 図１に示すしごきポンチから製造された絞り
−しごき成形缶より形成されたシームレス缶体の縦断面
図である。[Figure 2] diaphragm made from Gokiponchi Shi 1 - is a longitudinal sectional view of the ironing formed from molded cans were seamless can body.
【図３】 図１のＡ部の拡大模式図である。FIG. 3 is an enlarged schematic diagram of a portion A in FIG. 1;
【図４】 図３のIV-IV線に沿う模式的縦断面図であ
る。FIG. 4 is a schematic longitudinal sectional view taken along the line IV-IV in FIG. 3;
【図５】 図２のシームレス缶体より製造された缶詰が
２個接触している状態を示す図面であって、左方は缶詰
の縦断面図、右方は缶詰の正面図である。5 is a view showing a state in which two cans manufactured from the seamless can body of FIG. 2 are in contact with each other, wherein a left side is a longitudinal sectional view of the can and a right side is a front view of the can.
【図６】 本発明の第２の実施例である絞り−しごき成
形缶を製造するためのしごきポンチの正面図である。FIG. 6 is a drawing-ironing method according to a second embodiment of the present invention .
It is a front view of the ironing punch for manufacturing a shape can .
【図７】 本発明の第３の実施例である絞り−しごき成
形缶を製造するためのしごきポンチの正面図である。FIG. 7 is a front view of an ironing punch for producing a draw-ironing molded can according to a third embodiment of the present invention.
【図８】 図２のシームレス缶体の胴部内面の、点状突
起部がある部分の要部拡大模式的横断面図である。 8 is a point-like projection on the inner surface of the body of the seamless can of FIG . 2;
It is a principal part enlarged schematic cross-sectional view of the part with a rising part.
【図９】 図２のシームレス缶体の胴部内面の、点状突
起部がある部分の表面粗さ（触針法による：横倍率５
０，縦倍率１０，０００）の例を示す線図である。 9 is a point-like projection on the inner surface of the body of the seamless can body of FIG . 2;
Surface roughness of part with raised part (by stylus method: lateral magnification 5)
FIG. 7 is a diagram illustrating an example of (0, vertical magnification 10,000).
【図１０】 図７の絞りーしごき成形缶の胴部内面の、
クロスハッチ状突起部がある部分の表面粗さ（触針法に
よる：横倍率５０，縦倍率１０，０００）の例を示す線
図である。 FIG. 10 shows the inner surface of the body of the draw-ironing can of FIG .
Surface roughness of the area with cross-hatch projections
According to: a line showing an example of 50 (horizontal magnification, 10,000 magnification)
FIG.
１ しごきポンチ １a 二重巻締部となるべき周状部分に接触する部
分 １ｂ ネックイン部となるべき部分の下端より底部
側の周状部分に接触する部分 １ｃ チャイム部となるべき部分の上端より開口端
部側の周状部分に接触する部分 １e 側壁部 ３ 点状凹部 ４ 絞り−しごき成形缶４a チャイム部 ４a１ チャイム部の上端 ４e 胴壁部 ４ｘ 二重巻締部となるべき周状部分（平滑部） ４q ネックイン部となるべき部分の下端より底部
側の周状部分（平滑部）４s チャイム部となるべき部分の上端より開口端部側
の周状部分（平滑部） ５ シームレス缶体 ８ 二重巻締部 １１ 点状突起部 ２１ しごきボンチ２１a 二重巻締部となるべき周状部分に接触する部分
（平滑部） ２１ｂネックイン部となるべき部分の下端より底部側の
周状部分に接触する部分 ２１ｃチャイム部となるべき部分の上端より開口端部側
の周状部分に接触する部分 ２１e 側壁部 ２３ 線状の周状凹部 ２４ 絞り−しごき成形缶 ２５ 線状の周状突起部 ３１ しごきボンチ ３１a 二重巻締部となるべき周状部分に接触する部
分（平滑部） ３１ｂネックイン部となるべき部分の下端より底部側の
周状部分に接触する部分 ３１ｃチャイム部となるべき部分の上端より開口端部側
の周状部分に接触する部分 ３１e 側壁部 ３３ クロスハッチ状凹部 ３４ 絞り−しごき成形缶 ３５ クロスハッチ状突起部1 Ironing punch 1a Part that comes into contact with the peripheral part to be double-tightened
Bottom lower end of the minute 1b neck-portion and the portion to be
Open end from the upper end of the part that should become the chime part 1c that contacts the peripheral part on the side
1e Side wall portion 3 Contact point with peripheral portion 1e Side wall portion 3 Point-shaped concave portion 4 Squeeze-ironing can 4a Chime portion 4a1 Upper end of chime portion 4e Body wall portion 4x Circumferential portion (smooth portion) ) 4q Bottom of lower end of neck-in part
Side peripheral part (smooth part) Open end side from upper end of part to be 4s chime part
Circumferential portions portion in contact with the (smooth portion) 5 seamless can body 8 double seamed portions 11 point-like protrusion 21 ironing basin 21a double seam portion to become should circumferential portion of the
(Smooth part) 21b The bottom side from the lower end of the part to be the neck-in part
Opening end side from the upper end of the portion that should become the chime portion 21c in contact with the circumferential portion
Contacting the ironing can 25 linear of the circumferential projection 31 ironing basin 31a double seam portion to become should circumferential portion - the circumferential recess 24 aperture of the circumferential portion to the contact portion 21e side wall 23 linear Department
Minute (smooth part) 31b on the bottom side from the lower end of the part to be the neck-in part
Opening end side from the upper end of the portion to be the chime portion that contacts the circumferential portion 31c
Portion 31e side wall portion 33 into contact with the circumferential portion of the cross-hatched-like recesses 34 stop - ironing cans 35 crosshatched protrusions
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭57−13412（ＪＰ，Ｕ) 特公 平１−46205（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 1/16 B21D 24/00 B21D 51/26 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 57-13412 (JP, U) Japanese Patent Publication No. 1-46205 (JP, B2) (58) Fields surveyed (Int. Cl. 7 , DB name) B65D 1/16 B21D 24/00 B21D 51/26
Claims (2)
シームレス缶体に形成されるべき絞り−しごき成形缶に
おいて、二重巻締部となるべき周状部分、ネックイン部
となるべき部分の下端より底部側のほぼ２〜３０ｍｍの
周状部分およびチャイム部となるべき部分の上端より開
口端部側のほぼ２〜３０ｍｍの周状部分が平滑部となっ
ており、これら周状部分を除いて胴壁部内面に、はぼ規
則的に配列し、突起高さが約０．５〜５μｍの、多数
の、点状突起部または線状の周状突起部もしくは線状の
クロスハッチ状突起部が形成されていることを特徴とす
る絞りーしごき成形缶。1. A drawn-ironed can to be formed into a seamless can having a neck-in portion and a chime portion.
In addition , a circumferential portion to be a double-wound portion, a circumferential portion approximately 2 to 30 mm on the bottom side from the lower end of the portion to be a neck-in portion, and an open end side from the upper end of a portion to be a chime portion Approximately 2 to 30 mm of the circumferential part becomes a smooth part
And which, these circumferential portions body wall inner surface, except for the pot regularly arranged, the projection height of about 0.5 to 5 [mu] m, a large number of punctate projections or linear circumferential projection Or an iron can formed by forming a linear cross-hatch-shaped projection.
シームレス缶体に形成されるべき、絞り−しごき成形缶
を製造するためのしごきポンチにおいて、上記ポンチ
は、絞り−しごき成形缶の二重巻締部となるべき周状部
分に接触する部分、ネックイン部となるべき部分の下端
より底部側のほぼ２〜３０ｍｍの周状部分に接触する部
分、およびチャイム部となるべき部分の上端より開口端
部側のほぼ２〜３０ｍｍの周状部分に接触する部分が平
滑部となっており、これら周状部分に接触する部分を除
いて、側壁部表面に、はぼ規則的に配列し、凹み深さが
約０．５〜５μｍの、多数の、点状凹部または線状の周
状凹部もしくは線状のクロスハッチ状凹部が形成されて
いることを特徴とする絞りーしごき成形缶製造用しごき
ポンチ。2. An ironing punch for producing a draw-ironed can to be formed into a seamless can body having a neck-in part and a chime part, wherein the punch is a double-tightening of the draw-ironed can. Part that contacts the peripheral part that should be the part , part that contacts the peripheral part of approximately 2 to 30 mm on the bottom side from the lower end of the part that should be the neck-in part
The portion that contacts the peripheral portion of approximately 2 to 30 mm closer to the opening end than the upper end of the portion to be the chime portion is flat.
Except for the portions that are in contact with these peripheral portions , a large number of point-shaped recesses are arranged irregularly on the side wall surface and have a recess depth of about 0.5 to 5 μm. Alternatively, an ironing punch for producing a drawn and ironed molded can, wherein a linear circumferential concave portion or a linear cross hatched concave portion is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335194A JP3125580B2 (en) | 1994-05-02 | 1994-05-02 | Squeezing-ironing can and ironing punch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335194A JP3125580B2 (en) | 1994-05-02 | 1994-05-02 | Squeezing-ironing can and ironing punch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07300124A JPH07300124A (en) | 1995-11-14 |
| JP3125580B2 true JP3125580B2 (en) | 2001-01-22 |
Family
ID=14610070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11335194A Expired - Fee Related JP3125580B2 (en) | 1994-05-02 | 1994-05-02 | Squeezing-ironing can and ironing punch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3125580B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100381760B1 (en) * | 2000-12-01 | 2003-05-01 | 주식회사 포스코 | Structure of a Ironing punch for improving the strippability of a steel Drawn and Ironed can |
| KR100830118B1 (en) * | 2001-12-24 | 2008-05-20 | 주식회사 포스코 | Ironing punch with dotted surface |
| DE60332108D1 (en) * | 2002-05-10 | 2010-05-27 | Hokkai Can | METHOD AND DEVICE FOR PRODUCING THE CONTOUR OF A CANNULA COVER |
| JP2006061968A (en) * | 2004-08-30 | 2006-03-09 | Showa Aluminum Kan Kk | Di can manufacturing method, and di can manufactured by the method |
| JP4753429B2 (en) * | 2006-04-07 | 2011-08-24 | 大和製罐株式会社 | Manufacturing method and manufacturing apparatus for resin-coated seamless can |
| US8313003B2 (en) | 2010-02-04 | 2012-11-20 | Crown Packaging Technology, Inc. | Can manufacture |
| JP2013518723A (en) * | 2010-02-04 | 2013-05-23 | クラウン パッケイジング テクノロジー インコーポレイテッド | Can manufacturing |
| BR112012024685A2 (en) * | 2010-04-12 | 2016-06-07 | Crown Packaging Technology Inc | method of making a metal cup, apparatus for making a meta cup, container body and container |
| JP6255808B2 (en) * | 2013-09-05 | 2018-01-10 | 大日本印刷株式会社 | Liquid container |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946854B2 (en) * | 1976-11-26 | 1984-11-15 | 大和製缶株式会社 | 2-piece can for vacuum cans |
| JPS6446205A (en) * | 1987-08-13 | 1989-02-20 | Canon Denshi Kk | Magnetic head and its production |
-
1994
- 1994-05-02 JP JP11335194A patent/JP3125580B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07300124A (en) | 1995-11-14 |
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