Apparatus for protecting tools of hydraulic presses

Details Apparatus for protecting tools of hydraulic presses Apparatus for protecting tools of hydraulic presses

1975-04-23

1976-11-16

Meister, J. M.

Cutting

With randomly actuated stopping means

With sensing of product or product handling means

83554, 100 53, 192129B, B26D 724

Patent

active

039916391

ABSTRACT:
Apparatus for protecting tools of hydraulically operated fine punch presses of the type having a main piston as well as quick-closing pistons for imparting movement to the press ram. Keying pistons are arranged at the ram in series with and extending in the same direction as the quick-closing pistons to form a keying gap, variable in response to resistance pressure applied to the ram movement at or near the closing operation. A safety stop switch is arranged for detecting the keying gap and for effecting a stoppage of the machine in the event the keying gap is below a predetermined amount indicating an impediment in the path of the ram.

REFERENCES:
patent: 3568553 (1971-03-01), Wanner et al.

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