Punch and stripper assembly

Details Punch and stripper assembly Punch and stripper assembly

1988-08-19

1991-02-05

Yost, Frank T.

Cutting

With product handling means

Means to move, guide, or permit free fall or flight of product

83143, 83552, 83136, B21D 4508, B26D 706, B26D 718

Patent

active

049894846

ABSTRACT:
A punch assembly for a punch press is described which includes an external housing or sleeve having a punch slidably mounted therein with a spring such as a disc spring for yieldably biasing the punch toward one end of the sleeve and a removable stripper plate mounted on the sleeve in a position around the operating end of the punch. The punch is preferably keyed to the sleeve in more than one location and the stripper plate guides the punch by preventing rotation as well as lateral deflection. A retaining member such as a ring surrounds the stripper plate and can be manipulated manually, e.g. by rotating it, to enable the punch and stripper plate to be ejected by means of a spring.

REFERENCES:
patent: 3296905 (1967-01-01), Killaly
patent: 3335627 (1967-08-01), Smeets
patent: 3527130 (1970-09-01), Knehans
patent: 3733944 (1973-05-01), Dietrick et al.
patent: 4134319 (1979-01-01), Clark
patent: 4156377 (1979-05-01), Bracewell
patent: 4206667 (1980-06-01), Hirata et al.
patent: 4240314 (1980-12-01), Teeslink
patent: 4375774 (1983-03-01), Wilson et al.
patent: 4428262 (1984-01-01), Vlahek
patent: 4446767 (1984-05-01), Wilson
patent: 4457196 (1984-07-01), Cody

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