Title:
HYDRAULIC SYSTEM FOR DIE CUSHION DEVICE FOR PRESS MACHINE
Document Type and Number:
WIPO Patent Application WO/2004/065112
Kind Code:
A1
Abstract:
Elongate base plates (2) are arranged with intervals on the upper face of a cushion pad (1) of a die cushion device for a press machine. A large number of hydraulic cylinders (3) are arranged at each elongate base plate (2) with intervals in a length direction of the plate. It is constructed such that oil in an oil tank (20) is delivered to hydraulic chambers of the large number of the hydraulic cylinders (3) through a hydraulic pump (21). An elongate high-pressure container (41) for storing pressurized oil is communicated with each of the hydraulic chambers. The high-pressure container (41) is arranged between adjacent elongate base plates (2, 2).
Inventors:
SHIRAKAWA TSUTOMU (JP)
GOTO JUNICHI (JP)
GOTO JUNICHI (JP)
Application Number:
PCT/JP2003/016518
Publication Date:
August 05, 2004
Filing Date:
December 24, 2003
Export Citation:
Assignee:
KOSMEK LTD (JP)
SHIRAKAWA TSUTOMU (JP)
GOTO JUNICHI (JP)
SHIRAKAWA TSUTOMU (JP)
GOTO JUNICHI (JP)
International Classes:
B21D24/02; (IPC1-7): B30B15/02; B21D24/02
Foreign References:
| JPS6112517U | 1986-01-24 | |||
| JPH08224700A | 1996-09-03 | |||
| JPH06190464A | 1994-07-12 | |||
| JPS60108429U | 1985-07-23 |
Attorney, Agent or Firm:
Kaji, Yoshiyuki c/o Kaji (SUHARA & ASSOCIATES Recruit Shin Osaka
BLDG., 14-22, Nishinakajima 5-chome, Yodogawa-k, Osaka-shi Osaka, JP)
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