Fail-safe automatic sliding operation control apparatus for press
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United States of America Patent
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Apr 11, 2000
Grant Date -
N/A
app pub date -
Jul 17, 1998
filing date -
Sep 3, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
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, D.sub.N) on a bolster of the press are detected by an output generation configuration of two optical curtains. A signal for permitting a lowering operation of the slide is generated when the operator's hand is withdrawn from the danger zones (D, D.sub.N).
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