Patent ID: 8069759
Filing Date: 2011-12-06
Classification: B26D,Y10T

Abstract:
1. A method for separating material webs which are conveyed in an essentially continuous manner in a conveyor direction, in a separating direction aligned essentially parallel to the conveyor direction, comprising the steps of: providing a conveyor device for conveying the material webs; providing a rotating separating disk, manufactured of two disk parts which are essentially constructed in a mirror-inverted manner, wherein the separating disk comprises a first end-side formed by a first disk part and a second end-side formed by a second disk part, and wherein a plurality of first and second cutting knives with essentially straight-lined cutting edges are arranged around the periphery of the separating disk, and wherein the cutting edges of the first cutting knives are arranged on the first disk part and lie in the plane of the first end-side and the cutting edges of the second cutting knives are arranged on the second disk part and lie in the plane of the second end-side, and wherein the two disk parts are assembled on one another with an angular offset of the first and second cutting knives or in a congruent manner of the first and second cutting knives; providing a first counter-knife with an essentially straight-lined cutting edge, wherein the cutting knife is aligned onto the first end-side of the separating disk; providing a second counter-knife with an essentially straight-lined cutting edge, wherein the cutting edge of the counter-knife is aligned onto the second end-side of the separating disk; wherein the cutting edges of the first cutting knives of the rotating separating disk and the cutting edge of the first counter-knife form a first pair of cutting edges and the cutting edges of the second cutting knives of the separating disk and the cutting edge of the second counter-knife form a second pair of cutting edges, creating two parallel cuts in alternating cutting steps which are consecutive without intermediate steps or in synchronous cutting steps to form a separation gap and a waste strip, performing a shearing cut in the alternating or synchronous cutting steps wherein in each case a first and a second pair of the essentially straight-lined cutting edges of the cutting knives and counter-knives cooperate, whilst the material webs bear on the stationary cutting edges of the counter-knives.