Feeding and cutting cylinder with suction-operated, sliding shut

Details Feeding and cutting cylinder with suction-operated, sliding shut Feeding and cutting cylinder with suction-operated, sliding shut

1988-08-25

1990-03-20

Watson, Robert C.

Work holders

With fluid means

Vacuum-type holding means

B65H 308

Patent

active

049094920

ABSTRACT:
A web-feeding and cutting cylinder for rewinding machines, especially in the paper-manufacture industry, includes a suction-operated retention means which temporarily retains, on the cylinder surface, at least one end of the cut web. In the cylinder is a linear, ribbon-like shutter, extending parallel to the axis of the cylinder. It is axially movable and has orifices which cooperate with orifices in the bed or surface on which the shutter slides. This arrangement opens and closes a communication between a vacuum cavity inside the cylinder and the cylinder surface, with a limited displacement of the shutter.

REFERENCES:
patent: 2753181 (1956-07-01), Anander
patent: 3767097 (1973-10-01), Watts et al.
patent: 3957263 (1976-05-01), Christl

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