Title:
負荷駆動回路
Document Type and Number:
Japanese Patent JP4063328
Kind Code:
B2
Abstract:
The present invention relates to a fail-safe automatic sliding operation control apparatus for a press. The entrance and withdrawal behaviors of an operator's hand relative to danger zones (D, DN) on a bolster of the press is detected by an output generation configuration of two optical curtains (5,21). A signal for permitting a lowering operation of the slide is generated when the operator's hand is withdrawn from the danger zones (D, DN).
Inventors:
Masayoshi Sakai
Koichi Hobara
Koichi Hobara
Application Number:
JP51245698A
Publication Date:
March 19, 2008
Filing Date:
June 12, 1997
Export Citation:
Assignee:
Nippon Signal Co., Ltd.
International Classes:
H01H9/54; B30B15/28; F16P3/12; F16P3/14; H01H47/00; H03K17/18
Domestic Patent References:
| JP3143234A | ||||
| JP6150761A | ||||
| JP51023014B1 |
Foreign References:
| DE3732079A |
Attorney, Agent or Firm:
Tomijio Sasashima
Haruyuki Nishiyama
Haruyuki Nishiyama