Title:
PRESS DEVICE, AND PRESSURE SOURCE OF A PRESS DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/098926
Kind Code:
A1
Abstract:
Provided is a press device capable of keeping the mold from tilting due to an unbalanced load. This multistage press device (100) is provided with a lower stage mold (10) / upper stage mold (20) pair, a pressure source (50) which exercises a force in the direction in which the lower stage mold (10) and upper stage mold (20) open. The pressure source (50) is provided with a first fluid spring (60) and a second fluid spring (70), and the first fluid spring (60) applies, before the second fluid spring (70), a force on the lower stage mold (10) and upper stage mold (20) in the direction in which the lower stage mold (10) and upper stage mold (20) open. A first fluid chamber (63), in which the fluid of the first fluid spring (60) is sealed, and a second fluid chamber (73), in which the fluid of the second fluid spring (70) is sealed, are made to communicate, and the second fluid spring (70) is arranged more towards the center of the lower stage mold (10) and upper stage mold (20) than the first fluid spring (60).
Inventors:
MATSUMURA TAKUYA (JP)
HASEGAWA KOJI (JP)
YAMAMOTO HIROKI (JP)
MARUYAMA TOSHINORI (JP)
HOSHINO TAKAHIRO (JP)
HASEGAWA KOJI (JP)
YAMAMOTO HIROKI (JP)
MARUYAMA TOSHINORI (JP)
HOSHINO TAKAHIRO (JP)
Application Number:
PCT/JP2011/080112
Publication Date:
July 04, 2013
Filing Date:
December 26, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
MATSUMURA TAKUYA (JP)
HASEGAWA KOJI (JP)
YAMAMOTO HIROKI (JP)
MARUYAMA TOSHINORI (JP)
HOSHINO TAKAHIRO (JP)
MATSUMURA TAKUYA (JP)
HASEGAWA KOJI (JP)
YAMAMOTO HIROKI (JP)
MARUYAMA TOSHINORI (JP)
HOSHINO TAKAHIRO (JP)
International Classes:
B30B15/02; B21D24/00
Foreign References:
| JPH10166185A | 1998-06-23 | |||
| JPS51136573U | 1976-11-04 | |||
| JPH08276225A | 1996-10-22 |
Attorney, Agent or Firm:
YANO Juichiro (JP)
Juichiro Yano (JP)
Juichiro Yano (JP)
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Claims: