Title:
PRESS APPARATUS AND PRESS SYSTEM
Document Type and Number:
WIPO Patent Application WO/1998/023438
Kind Code:
A1
Abstract:
A support frame (14) is provided on a base (10) with a working space (16) therebetween. An automatic die changing mechanism (24) which transfers a plurality of die units (78) to a required working position selectively is provided in the working space. A support base has a vertical transfer shaft (18) which opens/closes the die unit placed at the working position and a driving mechanism section which drives the vertical transfer shaft (18) vertically. The driving mechanism section has a pulse servomotor (38) and a swinging fulcrum mechanism (22) which transmits the driving force to the vertical transfer shaft. The swinging arm (46) of the swinging fulcrum mechanism comprises a swinging fulcrum part which is supported by the support base, a swinging force-applied point part which is supported by a rotary shaft (42) driven to rotate by the pulse servomotor and a swinging force-acting point part which is linked with the vertical transfer shaft.
Inventors:
YOSHIZAWA YASUO (JP)
Application Number:
PCT/JP1997/004308
Publication Date:
June 04, 1998
Filing Date:
November 26, 1997
Export Citation:
Assignee:
YOSHIKI KOGYO KK (JP)
YOSHIZAWA YASUO (JP)
YOSHIZAWA YASUO (JP)
International Classes:
B21D19/08; B21D37/04; B30B1/06; B30B1/26; B30B15/02; B30B15/28; (IPC1-7): B30B1/06; B21D37/04
Foreign References:
| JPS58104000A | 1983-06-21 | |||
| JPH0390295A | 1991-04-16 | |||
| JPS62173097A | 1987-07-29 | |||
| JPH0810997A | 1996-01-16 |
Attorney, Agent or Firm:
Suzuye, Takehiko (7-2 Kasumigaseki 3-chom, Chiyoda-ku Tokyo 100, JP)
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