Patent ID: 7913597
Filing Date: 2011-03-29
Classification: B26D,B65H,Y10S,Y10T

Abstract:
1. Machine for the automatic recovery of paper and cardboard obtained from separation of front and/or end trimming rolls into cellulose paper and a tubular cardboard core, wherein the front and/or trimming rolls are generated during cutting of logs into rolls, the machine comprising a conveyor comprises a conveyor belt and a sorter for arranging the front and/or end trimming rolls one after the other into an aligned position so as to have an axis perpendicular to the conveyor belt, the conveyor system directing the aligned trimming rolls towards an insertion device for the insertion into a drop cutting group, wherein the drop cutting group comprises, an L-shaped curved centering guide bar having a vertical end portion, a curved central portion and engages the tubular cardboard core of the front and/or end trimming rolls incoming from the insertion device and guides the front and/or end trimming rolls through the curved part towards a horizontal part at which a cutting blade is placed so as to perform a cut, along a longitudinal axis of incoming trimming rolls, the cutting blade being inserted in a slot of the horizontal part of the bar in order to execute a half-roll cut of the paper and cardboard core of the incoming trimming rolls, wherein the machine further comprises a pneumatic suction-conveyor system which acts on the cut paper, the incoming trimming rolls being supported below and externally during the cutting by a belt which advances in the same direction as the cutting.