Patent ID: 8141869

Claim:
An arrangement ( 1 ) for conveying of sheets ( 2 a, b ), which arrangement ( 1 ) comprises: an upper receiving roll ( 3 ), a lower receiving roll ( 4 ), at least one upper belt element ( 5 ) and a receiving surface ( 6 ), which upper belt element ( 5 ) extends in a region above the receiving surface ( 6 ), which sheets ( 2 a, b ) are conveyed in a substantially horizontal direction of movement ( 7 ) towards the receiving rolls ( 3 , 4 ), which receiving rolls ( 3 , 4 ) during rotation move the sheets ( 2 a, b ) one after another between and past the receiving rolls ( 3 , 4 ), whereupon the respective sheets ( 2 a, b ), after passing through and between the receiving rolls ( 3 , 4 ), are placed between said receiving surface ( 6 ) and upper belt element ( 5 ), which sheets ( 2 a, b ) between the upper belt element ( 5 ) and the receiving surface ( 6 ) are placed on one another such that a rear edge ( 8 ) of a sheet ( 2 a ) passing through and between the receiving rolls ( 3 , 4 ) is overlapped by a front edge ( 9 ) of a following sheet ( 2 b ), characterized in that a lifting means ( 10 ) is situated in the sheet movement direction ( 7 ) after the receiving rolls ( 3 , 4 ) and is adapted to acting upon sheets ( 2 a, b ) passing through the receiving rolls ( 3 , 4 ) and over the lifting means such that the front edge ( 9 ) of a sheet ( 2 b ) which has passed over and past the lifting means ( 10 ) assumes a shape which strengthens it in the sheet movement direction ( 7 ); and that the lifting means ( 10 ) acts upon the front edge ( 9 ) in a forward portion of the sheet ( 2 a, b ), as viewed in a section through said forward portion of the sheet ( 2 a, b ) and transversely to the direction of movement ( 7 ) of the sheet ( 2 a, b ), by the sheet ( 2 a, b ) being conveyed over the lifting means so that the front edge ( 9 ) and the sheet ( 2 a, b ) assume a wavy shape comprising a number of ridges ( 11 ) and valleys ( 12 ), which ridges ( 11 ) and valleys ( 12 ) are parallel with the direction of movement ( 7 ), the sheet ( 2 a, b ) thus being stiffened in said direction of movement ( 7 ); wherein the lifting means ( 10 ) comprises a number of grooves ( 13 ) extending in the direction of movement ( 7 ) in a surface of the lifting means ( 10 ), which surface said sheets ( 2 a, b ) pass over; and the grooves ( 13 ) in the surface of the lifting means ( 10 ) are deeper on the side of the lifting means ( 10 ) which faces away from the receiving rolls ( 3 , 4 ) than the grooves ( 13 ) in the portion of the surface of the lifting means ( 10 ) which is situated closer to the receiving rolls ( 3 , 4 ); and that said grooves ( 13 ) in the lifting means ( 10 ) are so configured that the upper belt element ( 5 ), by its configuration, fits in the grooves ( 13 ).