Method and apparatus for cutting a web into a specified length

Details Method and apparatus for cutting a web into a specified length Method and apparatus for cutting a web into a specified length

1978-10-04

1980-04-08

Yost, Frank T.

Cutting

Processes

During movement of work past flying cutter

83 76, 83311, 83320, B26D 156

Patent

active

041966457

ABSTRACT:
A method and apparatus for cutting a web into a specified length in which an upper cutting edge and a lower cutting edge are provided respectively above and below the web run at a constant speed. The web is cut into the specified length by moving said upper cutting edge vertically while said upper and lower cutting edges are swung in the web movement direction. The swinging and vertical movements of said cutting edges are accomplished by rotation of an eccentric crank shaft driven by a DC motor. A rotation angle of the eccentric crank shaft and a movement length of said web are outputs provided in the form of pulses, respectively, in order to coincide a movement speed of the web with a swinging speed of the cutting edges in cutting said web.

REFERENCES:
patent: 3581616 (1971-06-01), Kawae et al.
patent: 4034635 (1977-07-01), Woolston
patent: 4103575 (1978-08-01), Utsui et al.

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