Working machine for material webs, particularly paper format cro

Details Working machine for material webs, particularly paper format cro Working machine for material webs, particularly paper format cro

1995-05-17

1997-09-02

Jones, Eugenia

Cutting

Cutting motion of tool has component in direction of moving...

Orbital motion of cutting blade

83674, 74409, B23D 2512, F16H 5518

Patent

active

056620187

ABSTRACT:
In a cross-cutter, particularly for small paper formats, having two knife shafts driven in synchronized opposing manner, provided with two knife sets, which are so mutually staggered on the two knife shafts that in a specific rotation position association of the two knife shafts only one of the sets engages, whereas the other knives pass through the cutting gap without cooperating with a corresponding counterknife. It is therefore possible for one knife shaft set to implement several synchronous lengths of cut by merely changing the reciprocal rotation position association of the knife shafts with respect to one another.
There is further provided a system for setting the backlash of the synchronizing gear to a minimum at several positions of a gear circumference by hydraulicly widening pockets in the gear body.

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