JPH0327935Y2 - - Google Patents
Info
- Publication number
- JPH0327935Y2 JPH0327935Y2 JP6489288U JP6489288U JPH0327935Y2 JP H0327935 Y2 JPH0327935 Y2 JP H0327935Y2 JP 6489288 U JP6489288 U JP 6489288U JP 6489288 U JP6489288 U JP 6489288U JP H0327935 Y2 JPH0327935 Y2 JP H0327935Y2
- Authority
- JP
- Japan
- Prior art keywords
- seamless
- neck
- mouth
- bead
- chamfered
- 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
Links
- 239000011324 bead Substances 0.000 claims description 30
- 238000005520 cutting process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000443 aerosol Substances 0.000 description 5
- 101150038956 cup-4 gene Proteins 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、エアロゾール缶等の耐圧缶に用いら
れる口絞りシームレス缶に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a squeezed seamless can used as a pressure-resistant can such as an aerosol can.
（従来の技術）
第１図ｄの１は、一般的なエアロゾール缶を示
したものであるが、エアロゾール缶１は断面円形
状のビード部３を有するシームレス缶体２と、噴
霧ノズル５が取付けられたマウンテイングカツプ
４よりなり、マウンテイングカツプ４のカール部
４ａがビード部３にクリンチされることにより密
封されている。なお、６はシーリングコンパウン
ドである。(Prior Art) 1 in FIG. 1d shows a general aerosol can. The aerosol can 1 has a seamless can body 2 having a bead portion 3 with a circular cross section, and a spray nozzle 5. The mounting cup 4 is made up of a mounting cup 4, and a curled portion 4a of the mounting cup 4 is clinched to the bead portion 3 to be sealed. Note that 6 is a sealing compound.
シームレス缶体２は通常次のようにして製造さ
れる。先づアルミニウム又はアルミニウム合金等
の円形金属ブランクより、衝撃押出し加工又は絞
り−しごき加工、および所定高さへのトリミング
加工によつて第１図ａに示すような円筒形状シー
ムレス缶７を形成する。 The seamless can body 2 is usually manufactured as follows. First, a cylindrical seamless can 7 as shown in FIG. 1a is formed from a circular metal blank of aluminum or aluminum alloy by impact extrusion or drawing and ironing, and trimming to a predetermined height.
次にこのシームレス缶７を、所謂口絞り加工す
ることによつて、第１図ｂに示すような、円筒形
の胴部８、胴部８の上端８ａに接続する肩部９、
および肩部９の上端９b1に接続する短円筒形の口
頚部１０を有する口絞りシームレス缶１１に成形
する。 Next, this seamless can 7 is subjected to a so-called mouth drawing process to form a cylindrical body 8, a shoulder 9 connected to the upper end 8a of the body 8, as shown in FIG.
Then, a seamless can 11 having a short cylindrical neck part 10 connected to the upper end 9b1 of the shoulder part 9 is formed.
肩部９は外側に凸の比較的大きな曲率半径（断
面の）を有する下部湾曲部９ａと、外側に凹の比
較的小さな曲率半径（断面の）を有する上部湾曲
部９ｂよりなり、上部湾曲部９ｂの上端９b1が肩
部９の上端となる。また下部湾曲部９ａの下端
は、胴部８の上端８ａと一致する。 The shoulder portion 9 consists of a lower curved portion 9a that is convex to the outside and has a relatively large radius of curvature (in cross section), and an upper curved portion 9b that is concave to the outside and has a relatively small radius of curvature (in cross section). The upper end 9b 1 of 9b becomes the upper end of the shoulder portion 9. Further, the lower end of the lower curved portion 9a coincides with the upper end 8a of the body portion 8.
口絞り加工のさい、肩部９から口頚部１０にわ
たつて横断面積が小さくなるため、壁厚も厚くな
る。すなわち口頚部１０の壁厚は通常胴部８の壁
厚の約1.2〜1.7倍となる。また材料の異方性のた
めと考えられるが、口頚部１０の端面には周方向
に沿い若干の凹凸部が生ずる。 During the mouth drawing process, the cross-sectional area from the shoulder portion 9 to the mouth and neck portion 10 becomes smaller, so that the wall thickness also increases. That is, the wall thickness of the mouth and neck section 10 is usually about 1.2 to 1.7 times the wall thickness of the body section 8. Furthermore, some unevenness occurs along the circumferential direction on the end face of the mouth and neck portion 10, probably due to the anisotropy of the material.
そのため端面を切削加工して平坦化し、また口
頚部１０の外周部を好ましく切削加工して、口頚
部１０を薄肉化した後、口頚部１０をスピニング
ロール又はカーリングダイによつて外側にカール
加工してビード部３に成形して、第１図ｃに示す
ビード部３を有する口絞りシームレス缶２を形成
する。 Therefore, the end face is cut to make it flat, and the outer periphery of the mouth and neck part 10 is preferably cut to make the mouth and neck part 10 thinner, and then the mouth and neck part 10 is curled outward by a spinning roll or a curling die. The molded material is molded into a bead portion 3 to form a sealed seamless can 2 having a bead portion 3 as shown in FIG. 1c.
この口絞りシームレス缶２に内容液（図示され
ない）を充填した後、ビード部３に、第１図ｃに
示すように、マウンテイングカツプ４のカール部
４ａを載置し、次いでマウンテイングカツプ４の
カール部４ａ側立上り壁部４ｂをビード部３の下
側に向つてクリンチすることによつてエアロゾー
ル缶１を製造する。 After filling the mouth-squeezed seamless can 2 with a liquid content (not shown), the curled portion 4a of the mounting cup 4 is placed on the bead portion 3 as shown in FIG. The aerosol can 1 is manufactured by clinching the rising wall portion 4b on the side of the curl portion 4a toward the lower side of the bead portion 3.
（考案が解決しようとする課題）
前記衝撃押出し加工又は絞り−しごき加工のさ
い、胴部に軸方向に延びる結晶粒の繊維組織が発
達するが、この発達は胴部の上方になるほど甚る
しい。口頚部１０は、この繊維組織が甚るしく発
達した胴部上方部を、さらに口絞り加工してなる
ものである故、口頚部１０、特にその端面１０ａ
の近傍は、強度の塑性加工を受けて、複雑な、甚
るしい繊維組織となつている。(Problem to be solved by the invention) During the impact extrusion process or the drawing-iron process, a fibrous structure of crystal grains extending in the axial direction develops in the body, but this development becomes more severe as it moves upwards in the body. . The mouth and neck part 10 is formed by further drawing the upper part of the body where the fiber structure is extremely developed.
The area around the area has been subjected to intense plastic processing, resulting in a complex and severe fibrous structure.
そのため口頚部１０を外側にカール加工してビ
ード部３に成形するさいに、切削加工後の端面１
０ａに微少な疵や欠け目等の欠陥があると、これ
らの欠陥が切欠き効果のため起点となつて、カー
ル加工のさい縦割れが発生して、割れ目を有する
ビード部３が形成され、密封不良缶を生じ易い。 Therefore, when curling the mouth and neck part 10 outward to form the bead part 3, the end surface 1 after cutting is
If there are defects such as minute scratches or nicks in 0a, these defects become starting points due to the notch effect, and vertical cracks occur during curling, forming bead portions 3 with cracks. This can easily result in poorly sealed cans.
特に端面１０ａの内側コーナ１０a1における上
記欠陥は、内側コーナ１０a1には、外側にカール
加工するさい、特に大きな円周方向外方に向う引
張り力が加わるため、上記縦割れを招き易いとい
う問題を生ずる。 In particular, the above-mentioned defect at the inner corner 10a 1 of the end face 10a is a problem in that the inner corner 10a 1 is subjected to a particularly large tensile force directed outward in the circumferential direction when curling the inner corner 10a 1 to the outside, so that the above-mentioned vertical crack is likely to occur. will occur.
本考案は、外側にカールしてビード部に成形す
るさい割れを発生し難い、短円筒形の口頚部を有
する口絞りシームレス缶を提供することを目的と
する。 SUMMARY OF THE INVENTION An object of the present invention is to provide a seamless can with a short cylindrical mouth and neck that is unlikely to cause cracking when curled outward and formed into a bead.
さらに本考案は、上記口絞りシームレス缶より
形成された、割れ目のないビード部を有する口絞
りシームレス缶を提供することを目的とする。 A further object of the present invention is to provide a drawn seamless can having a bead portion without cracks, which is formed from the drawn seamless can.
（課題を解決するための手段）
本考案の口絞りシームレス缶は、円筒形の胴
部、該胴部の上端に接続する肩部、および該肩部
の上端に接続する短円筒形の口頚部を有する口絞
りシームレス缶であつて、該口頚部の端面の少な
くとも内側のコーナが面取りされて面取り部が形
成されている。(Means for Solving the Problems) The sprung seamless can of the present invention includes a cylindrical body, a shoulder connected to the upper end of the body, and a short cylindrical neck connected to the upper end of the shoulder. A seamless can with a mouth opening, wherein at least an inner corner of an end face of the mouth and neck portion is chamfered to form a chamfered portion.
ここに面取り部とは、断面直線状の通常の面取
り部の他に断面が曲線状の、例えば外側に凸の円
弧状の、所謂“Ｒ”取り部を含めて称せられる。 Here, the term "chamfered portion" includes not only a normal chamfered portion having a linear cross section, but also a so-called "R" chamfered portion having a curved cross section, for example, an outwardly convex circular arc shape.
本考案の前記口絞りシームレス缶は、上記口頚
部を外側にカールしてビード部に形成してなる、
ビード部を有する口絞りシームレス缶として用い
られる。 The mouth-squeezed seamless can of the present invention is formed by curling the mouth and neck portion outward to form a bead portion.
Used as a seamless can with a bead.
（作 用）
口頚部を外側にカール加工してビード部に成形
するさいに、最も縦割れ発生がスタートし易い、
端面の内側コーナが面取りされて、好ましくは表
面滑らかな面取り部となつている。面取り部はビ
ード部形成のさいの円周方向外方に向う引張り力
が緩和され、また、縦割り発生の起点となる微少
な疵や欠け目等が実質的にないようにすることが
可能であるので、割れ目のないビード部を形成す
ることができる。(Function) Vertical cracks are most likely to start when forming the bead by curling the neck and mouth outward.
The inner corner of the end face is chamfered, preferably with a smooth surface chamfer. The chamfered part relieves the tensile force directed outward in the circumferential direction when forming the bead part, and also makes it possible to virtually eliminate minute flaws and nicks that can become the starting point for vertical splitting. Therefore, a bead portion without cracks can be formed.
（実施例）
アルミニウム合金（例えば3004材）より円形ブ
ランク（厚さは例えば0.9mm、直径は例えば110
mm）を、絞り−しごき成形した後、開口端をトリ
ミングして、第１図ａに示す形状の円筒形状シー
ムレス缶７（外径は例えば45mm、全高は例えば
150mm、胴部の平均厚さは例えば0.3mm）を形成し
た。(Example) A circular blank (thickness is, for example, 0.9 mm, diameter is, for example, 110 mm) is made of aluminum alloy (for example, 3004 material).
mm) is drawn and ironed, the open end is trimmed, and the cylindrical seamless can 7 is shaped as shown in FIG.
150 mm, and the average thickness of the body was, for example, 0.3 mm).
この缶体７を口絞り加工して第１図ｂに形状の
口絞りシームレス缶１１を形成した。口頚部１０
の外径は例えば26.4mm、高さは例えば9.0mm、壁
厚は例えば0.5mmで、下部湾曲部９ａの外面側曲
率半径は例えば13mm、上部湾曲部９ｂの外面側曲
率半径は例えば３mmであつた。 This can body 7 was subjected to a neck drawing process to form a seamless can 11 having the shape shown in FIG. 1b. mouth and neck 10
has an outer diameter of, for example, 26.4 mm, a height of, for example, 9.0 mm, a wall thickness of, for example, 0.5 mm, an outer radius of curvature of the lower curved portion 9a, for example, 13 mm, and an outer radius of curvature of the upper curved portion 9b, for example, 3 mm. Ta.
次に口頚部１０の外周部を、第２図に示すよう
に、全高にわたり上細のテーパ部１０ｂ（なお１
０b′は切削前の外周面を示す）が形成されるよう
にバイトで切削加工し、さらに端面を平坦になる
ようにバイトで切削加工した。切削加工後の口頚
部１０の高さは例えば7.5mm、端面１０ａ（１０
a′は切削前の端面を示す）の厚さは例えば0.45mm
であつた。 Next, as shown in FIG.
0b' indicates the outer circumferential surface before cutting) was formed using a cutting tool, and the end surface was further processed using a cutting tool to make it flat. The height of the mouth and neck portion 10 after cutting is, for example, 7.5 mm, and the end surface 10a (10
The thickness of (a′ indicates the end surface before cutting) is, for example, 0.45 mm.
It was hot.
次いで端面１０ａの内側コーナ１０a1をグライ
ンダ−（砥石粒度：＃1.500〜2.000）により研摩
して面取り部１２を形成した。面取り部１２は断
面直線状で、端面１０ａの内側コーナ１０a1側の
部分とのなす角度は例えば45度、断面長さは好
ましくは0.05〜0.30mm、例えば0.2mmであつた。 Next, the inner corner 10a1 of the end face 10a was ground with a grinder (grinding wheel size: #1.500 to 2.000) to form a chamfered portion 12. The chamfered portion 12 had a straight cross section, the angle between the end face 10a and the inner corner 10a1 side was, for example, 45 degrees, and the cross-sectional length was preferably 0.05 to 0.30 mm, for example 0.2 mm.
以上のように切削加工を行ない、かつ面取り部
１２を形成した缶１１の口頚部１０をスピニング
ロールによつて、第３図に示すようにビード部３
を有する缶２を作製した。ビード部３の推定中心
ｏを通るビード高さＨは3.5mm、開口部１３の内
径口は25.45mmであつた。 The neck part 10 of the can 11, which has been cut as described above and has the chamfered part 12 formed therein, is cut into a bead part 3 as shown in FIG. 3 using a spinning roll.
A can 2 having the following was produced. The bead height H passing through the estimated center o of the bead portion 3 was 3.5 mm, and the inner diameter of the opening 13 was 25.45 mm.
これらの10.000缶についてビード部３の割れ
を、渦電流探傷法により検査したが、割れの見ら
れた缶数は０であつた。一方面取り部１２を形成
しない点以外は前記と同様にして作製された缶２
について、ビード部３の割れを検査した所、
10.000缶について３缶の割れ缶が検出された。 These 10,000 cans were inspected for cracks in the bead portion 3 by eddy current testing, but no cracks were found. On the other hand, a can 2 manufactured in the same manner as above except that the chamfered portion 12 is not formed.
When inspecting cracks in the bead part 3,
Out of 10,000 cans, 3 broken cans were detected.
ビード部３形成前の口頚部１０は、第４図に示
すように、下方がテーパ部１０b1で、上方が短円
筒部１０b2（高さは例えば１mm）になるように切
削加工した後、面取り部１２を形成されたもので
あつてもよい。なお１０b′は切削加工前の外周面
を示す。 As shown in FIG. 4, the mouth and neck part 10 before the formation of the bead part 3 is cut so that the lower part has a tapered part 10b 1 and the upper part has a short cylindrical part 10b 2 (height is, for example, 1 mm). A chamfered portion 12 may be formed thereon. Note that 10b' indicates the outer circumferential surface before cutting.
さらにビード部３形成前の口頚部１０は、第５
図に示すように、全高にわたり外周面が短円筒部
10bとなるように切削加工した後、面取り部１２
を形成してなるものであつてもよい。１０b′は切
削加工前の外周面を示す。しかし第２図、第４図
に示すタイプの口頚部１０の方が、ビード部３形
成のさい、上部湾曲部９ｂに、軸荷重にもとづく
陥没が起り難いので好ましい。 Furthermore, the mouth and neck part 10 before the formation of the bead part 3 has a fifth
As shown in the figure, the outer circumferential surface is a short cylindrical part over the entire height.
After cutting to become 10b, chamfered part 12
It may be formed by forming. 10b' shows the outer peripheral surface before cutting. However, the type of mouth and neck portion 10 shown in FIGS. 2 and 4 is preferable because the upper curved portion 9b is less likely to collapse due to the axial load when the bead portion 3 is formed.
さらに口頚部１０は、外周部が削除されること
なく、口絞り成形後のままのもの（つまり外周面
が１０b′のもの；但し端面の平坦化のための切削
加工は行なう）であつてもよい。しかしこの場合
は、ビード部３形成のさい、軸荷重により、下部
湾曲部９ａの陥没が起り易い。 Furthermore, even if the mouth and neck part 10 is left as it is after the mouth drawing process without removing the outer periphery (that is, the outer periphery is 10b'; however, cutting is performed to flatten the end face). good. However, in this case, when forming the bead portion 3, the lower curved portion 9a is likely to collapse due to the axial load.
なお面取り部１２は、所謂“Ｒ”取り部であつ
てもよいが、この場合の面取り部１２の曲率半径
Ｒは約0.05〜0.3mmであることが好ましい。また
端面１０ａの外側コーナにも面取り部が形成され
た缶であつてもよい。 Note that the chamfered portion 12 may be a so-called "R" chamfered portion, but in this case, the radius of curvature R of the chamfered portion 12 is preferably about 0.05 to 0.3 mm. Further, the can may have a chamfered portion formed on the outer corner of the end surface 10a.
（考案の効果）
本考案の口絞りシームレス缶は、ビード部形成
のさい割れが発生し難いので、密封性に優れてい
るという効果を奏する。(Effects of the Invention) The sprung seamless can of the present invention is less prone to cracking during the formation of the bead, so it has the effect of excellent sealing performance.
第１図は口絞りシームレス缶を有するエアロゾ
ール缶の製造工程を示す図面であつて、第１図ａ
は口絞りシームレス缶を口絞り加工する前の円筒
形状シームレス缶の例の縦断面図、第１図ｂは、
第１図ａの円筒形状シームレス缶から形成された
口絞りシームレス缶の例の縦断面図、第１図ｃは
第１図ｂの口絞りシームレス缶にビード部を形成
した後、マウンテイングカツプを載置した状態の
例を示す１部切断正面図、第１図ｄは第１図ｃの
マウンテイングカツプをクリンチングして密封し
た状態を示す１部切断正面図、第２図は本考案の
口絞りシームレス缶の第１の実施例の要部縦断面
図、第３図は第２図の口絞りシームレス缶よりビ
ード部を形成してなる本考案の口絞りシームレス
缶の第２の実施例の要部縦断面図、第４図は本考
案の口絞りシームレス缶の第３の実施例の要部縦
断面図、第５図は本考案の口絞りシームレス缶の
第４の実施例の要部縦断面図である。
２…ビード部を有する口絞りシームレス缶、３
…ビード部、８…胴部、９…肩部、１０…口頚
部、１０ａ…端面、１０a1…内側コーナ、１１…
口絞りシームレス缶、１２…面取り部。
FIG. 1 is a drawing showing the manufacturing process of an aerosol can having a seamless can with a mouth opening, and FIG.
Figure 1b is a vertical cross-sectional view of an example of a cylindrical seamless can before the mouth drawing process is performed.
FIG. 1c is a vertical cross-sectional view of an example of a sealed seamless can formed from the cylindrical seamless can shown in FIG. 1a, and FIG. FIG. 1d is a partially cutaway front view showing an example of the mounting cup in the mounted state; FIG. 1d is a partially cutaway front view showing the mounting cup in FIG. FIG. 3 is a longitudinal cross-sectional view of a main part of the first embodiment of the drawn seamless can, and FIG. 3 shows a second embodiment of the drawn seamless can of the present invention, which has a bead portion formed from the drawn seamless can of FIG. 2. FIG. 4 is a vertical cross-sectional view of a main part of a third embodiment of a seamless can with a neck of the present invention, and FIG. 5 is a longitudinal cross-sectional view of a main part of a fourth embodiment of a seamless can with a neck of the present invention. FIG. 2... Seamless can with a bead portion, 3
...bead part, 8...body part, 9...shoulder part, 10...mouth and neck part, 10a...end face, 10a 1 ...inner corner, 11...
Squeezed seamless can, 12... Chamfered part.
Claims (1)
部、および該肩部の上端に接続する短円筒形の
口頚部を有する口絞りシームレス缶において、
該口頚部の端面の少なくとも内側のコーナが面
取りされて、面取り部が形成されていることを
特徴とする口絞りシームレス缶。 (2) 請求項第１項記載の口絞りシームレス缶の該
口頚部を、外側にカールしてビード部に形成し
てなる、ビード部を有する口絞りシームレス
缶。[Claims for Utility Model Registration] (1) In a seamless can with a cylindrical body, a shoulder connected to the upper end of the body, and a short cylindrical neck connected to the upper end of the shoulder. ,
A seamless can with a neck opening, characterized in that at least an inner corner of the end face of the neck part is chamfered to form a chamfered part. (2) A seamless can with a bead, which is formed by curling the neck of the seamless can according to claim 1 outward to form a bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6489288U JPH0327935Y2 (en) | 1988-05-17 | 1988-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6489288U JPH0327935Y2 (en) | 1988-05-17 | 1988-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01170617U JPH01170617U (en) | 1989-12-01 |
| JPH0327935Y2 true JPH0327935Y2 (en) | 1991-06-17 |
Family
ID=31290343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6489288U Expired JPH0327935Y2 (en) | 1988-05-17 | 1988-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327935Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2516040Y2 (en) * | 1991-05-14 | 1996-11-06 | 株式会社大阪造船所 | Oxygen cylinder |
| JP2003011979A (en) * | 2001-04-24 | 2003-01-15 | Takeuchi Press Ind Co Ltd | Metallic container |
| US20040035871A1 (en) * | 2002-08-20 | 2004-02-26 | Thomas Chupak | Aluminum aerosol can and aluminum bottle and method of manufacture |
-
1988
- 1988-05-17 JP JP6489288U patent/JPH0327935Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01170617U (en) | 1989-12-01 |
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