Patent ID: 6615699
Filing Date: 2003-09-09
Classification: B26D,Y10S,Y10T

Abstract:
A method for cutting laminar objects having major faces during a continuous motion in a conveying direction with a conveying speed VG, the conveying direction defining a downstream edge for each object and an upstream edge for each object, in which method the objects are cut along a cut line between first and second substantially linear cutting edges, the cut line substantially parallel to the conveying direction, the method defining a cutting process for each object, the method comprising:positioning the first cutting edge close to one of the major faces of the objects; rotating the second cutting edge about a pivot perpendicular to the conveying direction at a velocity &ohgr; and spaced away by a distance y from the major faces of the objects, the pivot defining a rotation axis, the rotation of the second cutting edge relative to the first cutting edge defining a crossing point where a cutting occurs, said crossing point further defining a region of the second cutting edge about the crossing point; the rotation of the second cutting edge carried out so that VG=y&ohgr;2&pgr;, whereby during the cutting, the region of the second cutting edge about the crossing point has a velocity, the velocity having a component in the conveying direction substantially the same as the conveying speed, and the cutting carried out so that each cut of an object is performed by only one second cutting edge; the cutting carried out so that the conveying direction is parallel to the faces of the objects to be cut, and that the cutting edges are positioned or moving in a plane parallel to the conveying direction and substantially perpendicular to the faces of the objects.