Safety device for a press brake or similar machine

Details Safety device for a press brake or similar machine Safety device for a press brake or similar machine

1989-04-21

1990-03-13

Combs, E. Michael

Metal deforming

With randomly-actuated stopping

72 26, 72389, B21D 5500

Patent

active

049074326

ABSTRACT:
A safety device comprises a laser beam (7) emitted by an emitter located at one side of a press and received by a receiver located at the other side of the press. The beam is directed in parallel with the edge (5) of the punch of the press (1) at a distance from the surface (4) of the metal sheet lying between the thickness of a finger and the stopping distance of the punch at low speed. A device disposed in the diameter of the beam enables actual measurement of the speed of motion of the punch or of any body being carried along by the punch, so as to order interruption of the motion of the punch when the measured speed is higher than a predetermined speed.

REFERENCES:
patent: 3841140 (1974-10-01), Hyre
patent: 4166369 (1979-09-01), Nakajima
patent: 4357820 (1982-11-01), Blanchard
patent: 4489578 (1984-12-01), Nagai et al.
patent: 4660703 (1987-04-01), Filcich et al.
patent: 4753100 (1988-06-01), Hanni

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