Title:
IMPACT EXTRUSION FORMING DEVICE FOR BOTTOMED CONTAINER AND IMPACT EXTRUSION FORMING METHOD
Document Type and Number:
Japanese Patent JP3492926
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an impact extrusion forming device capable of preventing a deformation of a bottomed container at the time of being released from a die.
SOLUTION: In an impact extrusion forming device for a bottomed container M which deforms a material (m) to be formed within a cavity 4 into the inverse direction of the pressurizing direction by pressurizing on impact the material with a punch 2 which is arranged so as to relatively move in the axial direction of a receiving die 1 having the cavity 4, a first intake part 5 which takes air into a space S1 between a bottom wall Ma of the bottomed container M and the cavity 4 when the bottomed container M is formed in the receiving die 1 and released from the receiving die 1 after forming by pressurizing and a second intake part 8 which takes air into a space (S2) between the pressurizing surface 2a of the punch and the bottomed container M when the bottomed container M is formed in the punch 2 and released from the punch 2 are provided. Thus, the spaces S1, (S2) are restrained to be decompressed and whereby the bottomed container M is prevented from being deformed.
Inventors:
Naoaki Miyamoto
Kazuo Kanbara
Koji Miyano
Akio Fukuda
Kazuo Kanbara
Koji Miyano
Akio Fukuda
Application Number:
JP35026498A
Publication Date:
February 03, 2004
Filing Date:
December 09, 1998
Export Citation:
Assignee:
Miyamoto Industry Co., Ltd.
SHOWA DENKO K.K.
SHOWA DENKO K.K.
International Classes:
B21C23/18; B21C25/02; B21D51/18; B21J5/06; B21K21/04; H01M2/02; (IPC1-7): B21J5/06; B21K21/04; H01M2/02
Domestic Patent References:
| JP63290632A | ||||
| JP4105742A | ||||
| JP50108942U | ||||
| JP3825510B1 |
Attorney, Agent or Firm:
Hisayoshi Shimizu (2 outside)