Limit switch for the selective positioning of cutting units in a

Details Limit switch for the selective positioning of cutting units in a Limit switch for the selective positioning of cutting units in a

1990-07-24

1991-12-03

Phan, Hien H.

Cutting

With randomly actuated stopping means

Responsive to tool detector or work-feed-means detector

83 72, 83 767, 83499, 8352222, B26D 124, B26D 502

Patent

active

050690981

ABSTRACT:
Limit switch for the positioning of cutting machines in a machine for the cutting of plastic and/or paper materials in strips of predetermined width, this cutting unit being slidable on supporting beams, which device includes a source (31) of a ray of light (50) parallel to the supporting beam (24) of the cutting units (12); a tappet (33) of this ray of light; a rotating L-shaped plate (36) hinged in (40) to one side of the base of each cutting unit (12) and maintained in parallel position to said ray of light (50) by a spring (42); an actuating plate (38) fixed in adjustable position to the other side of each cutting unit, in opposite position and aligned with said rotating L-shaped plate (36); and an electronic station driven by the interception of said ray of light (50).

REFERENCES:
patent: 3882764 (1975-05-01), Johnson
patent: 3886833 (1975-06-01), Gunn et al.
patent: 4283981 (1981-08-01), Trautmann
patent: 4607552 (1986-08-01), Siler

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