Sheet-cutter having motor driven push cutter

Details Sheet-cutter having motor driven push cutter Sheet-cutter having motor driven push cutter

1997-08-26

2000-08-29

Rada, Rinaldi I.

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

83629, 83631, 83636, 83821, 83694, 83856, 83697, 83695, 83202, B26D 508, B26D 514

Patent

active

061091545

ABSTRACT:
A sheet cutter cuts a portion of a continuous sheet, discharged through a gap between a pair of moving and stationary knives respectively having arc-shaped and straight knife edges. A motor rotates a pair of rotatable, identical gear wheels engaged with each other and opposed to the moving knife and having a pair of respective link arms thereon. Each link arm has a first end connected to a peripheral position of the respective gear wheel by a pivot thereon and a second end connected to the moving knife by a pin inserted into a respective one of a pair of horizontally extending slits in the moving knife. Rotating motion of the gear wheels is transformed into a reciprocating motion of the moving knife against, and relatively to, the stationary knife, in which the second end of each link arm assumes one of two opposing positions, depending respectively upon a current one of opposite rotating directions of the respective gear wheel, such that one or the other rotating direction of the motor results in the reciprocating motion of the moving knife with a stroke either to cut the sheet completely or incompletely.

REFERENCES:
patent: 3240094 (1966-03-01), Endert
patent: 4244255 (1981-01-01), Dykstra
patent: 4881459 (1989-11-01), Ramun
patent: 4936177 (1990-06-01), Ozawa et al.
patent: 5088370 (1992-02-01), Kondo
patent: 5090285 (1992-02-01), Knodo
patent: 5235887 (1993-08-01), Moriya
patent: 5584218 (1996-12-01), Schoendienst

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