JPS5772735A - Method and apparatus for seaming of seam part of drum - Google Patents
Method and apparatus for seaming of seam part of drumInfo
- Publication number
- JPS5772735A JPS5772735A JP14928180A JP14928180A JPS5772735A JP S5772735 A JPS5772735 A JP S5772735A JP 14928180 A JP14928180 A JP 14928180A JP 14928180 A JP14928180 A JP 14928180A JP S5772735 A JPS5772735 A JP S5772735A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- forming
- bottom plate
- seamed
- upper die
- 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.)
- Pending
Links
Abstract
PURPOSE: To reduce time for seaming and simplify the apparatus by applying two- step benging to a flange at two, large and small, radii of curvature by forming grooves of upper and lower dies and making rolling in and tightening by pressing with one upper die.
CONSTITUTION: A body flange 12 and top and bottom plate flanges 22 are superposed and seamed by the first and second roll-shaped upper dies 41, 51 having a lower die 32 that has a cylindrical forming face and forming grooves 42, 52 that open to the forming face 33 of the lower die 32 and extend along circumferential direction. The top and bottom plate flange 22 is bent by the first upper die 41 until its tip reaches the body flange 12. Next, it is bent about 90° to circular arc form by the second upper die 52, and rolled at a radius of curvature smaller than that of bending. Such bending is repeated, and the body flange 12 and top and bottom plate flange are seamed so that they are superposed. Then, the seamed part is pressed to the bottom of the forming groove 52 of the second upper die which is parallel to the forming face 33 of the lower die.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14928180A JPS5772735A (en) | 1980-10-27 | 1980-10-27 | Method and apparatus for seaming of seam part of drum |
US06/233,285 US4392295A (en) | 1980-10-27 | 1981-02-10 | Method and apparatus for forming drum seam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14928180A JPS5772735A (en) | 1980-10-27 | 1980-10-27 | Method and apparatus for seaming of seam part of drum |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5772735A true JPS5772735A (en) | 1982-05-07 |
Family
ID=15471769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14928180A Pending JPS5772735A (en) | 1980-10-27 | 1980-10-27 | Method and apparatus for seaming of seam part of drum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5772735A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143504A (en) * | 1988-09-21 | 1992-09-01 | Koninklijke Emballage Industrie Van Leer B.V. | Method of manufacturing a seam connection |
US5320468A (en) * | 1990-07-13 | 1994-06-14 | Kramer Antonio H | Tin can manufacturing process |
-
1980
- 1980-10-27 JP JP14928180A patent/JPS5772735A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143504A (en) * | 1988-09-21 | 1992-09-01 | Koninklijke Emballage Industrie Van Leer B.V. | Method of manufacturing a seam connection |
US5320468A (en) * | 1990-07-13 | 1994-06-14 | Kramer Antonio H | Tin can manufacturing process |
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