Title:
缶蓋シェルを作る方法および装置
Document Type and Number:
Japanese Patent JP2005530617
Kind Code:
A
Abstract:
A method and apparatus for making can lid shells in die presses, with the addition of a forming ring within the die set. The forming ring is placed between the draw pad and die center, and is used to apply a force on the material during the shell lid forming process. Use of this apparatus reduces the amount of force that must be applied on the draw pad to hold the material between the die core ring and the draw pad during the forming process. By lessening the force needed to hold the material during the forming process, the probability of wrinkling or cracking of the material during the forming process is greatly reduced.
Inventors:
Habal, martin, em
Application Number:
JP2003580014A
Publication Date:
October 13, 2005
Filing Date:
March 24, 2003
Export Citation:
Assignee:
Metal, Cantina, Copa Leishan
International Classes:
B65D8/04; B21D51/38; B21D51/44; (IPC1-7): B21D51/44; B65D8/04
Domestic Patent References:
| JPH01273625A | 1989-11-01 | |||
| JPH03275223A | 1991-12-05 |
Foreign References:
| WO1998034743A1 | 1998-08-13 |
Attorney, Agent or Firm:
Yuzo Sanada
Nobuhiko Nakajima
Ohara Shizuo
Nobuhiko Nakajima
Ohara Shizuo