Hold-down clamp for slitter-punch

Details Hold-down clamp for slitter-punch Hold-down clamp for slitter-punch

2006-07-25

2006-07-25

Peterson, Kenneth E. (Department: 3724)

Cutting

With product handling means

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

C083S587000, C083S639100

Reexamination Certificate

active

07080585

ABSTRACT:
A clamping arrangement is provided for a slitter and/or hole punch for a plastic film processing machine. The punch can be unitarily formed on a base member, and mounted on a block that is affixed to the end of an actuator rod. A double-acting pneumatic cylinder actuator serves as the reciprocating mechanism for the punch. A hold-down clamping mechanism includes an apertured clamping plate and frame that surrounds the punch and is spring-driven using a compression spring mounted over the shaft or rod of the actuator. The compression spring compresses on the upstroke, and assists the cylinder on the downstroke.

REFERENCES:
patent: 706279 (1902-08-01), Temple
patent: 2602507 (1952-07-01), Adams
patent: 3722337 (1973-03-01), Brolund et al.
patent: 3802308 (1974-04-01), Davis, Jr.
patent: 3939743 (1976-02-01), Coombes
patent: 3973453 (1976-08-01), Tameo
patent: 4516448 (1985-05-01), Hill et al.
patent: 4646599 (1987-03-01), Benedict
patent: 4841822 (1989-06-01), Gerber
patent: 5114394 (1992-05-01), Madsen
patent: 5613416 (1997-03-01), Fujita
Early Office Museum Antique Stapler Gallery—Paper Fastener Punches (www.officemuseum.com/stapler—gallery—miscellaneous.htm), date unk.

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