Pneumatic scrap reduction system for rotary die cutter

Details Pneumatic scrap reduction system for rotary die cutter Pneumatic scrap reduction system for rotary die cutter

1987-12-23

1988-11-01

Schran, Donald R.

Cutting

Processes

During movement of work past flying cutter

83313, 83336, 226145, 226148, 101228, B26D 162, B26D 500, B65H 2032

Patent

active

047810882

ABSTRACT:
A rotary die cutter system minimizes the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance by means of a fluid pressure cylinder in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced so close to the retracted leading end of the web that contiguous portions of a single blank can be cut from the web during successive revolutions of the die cylinder.

REFERENCES:
patent: 4716802 (1988-01-01), O'Connor et al.

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