Patent ID: 7278602
Filing Date: 2007-10-09
Classification: B65H

Abstract:
1. An apparatus for winding up a material web in rolls on roll shafts, comprising: two roll carriages, each having supporting structures for supporting roll shafts thereon and a drive mechanism for rotating the roll shafts during operation, means for conveying each carriage to-and-fro between a start position where the winding-up of a roll of a web on an empty shaft is initiated, and a finish position where the winding up of the roll is complete, a first pressure roller displaceable between a first position where the roller is supporting the web at a distance from an empty shaft on a roll carriage in the start position and a second position where the first pressure roller urges the web against the empty shaft, wherein the first pressure roller is rotatably mounted about a first axis on a first pair of arms, a second pressure roller displaceable between a start position where the roller is free of the web and positions other than the start position where the second pressure roller engages a periphery of a partly or completely wound-up web roll, wherein the second pressure roller is rotatably mounted on a second pair of arms which are pivotally mounted about the first axis, a cutting knife located between the first and second pressure rollers and being displaceable between a first position at a spaced distance from the web and a second position where the knife has cut through the web, and means for, at roll exchanging, simultaneously or sequentially displacing the first pressure roller and the cutting knife from the first to the second position to transfer the web from the partly or completely wound-up web roll to an empty roll shaft.