B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
242/5
B65H 19/30 (2006.01) B65H 19/28 (2006.01)
Patent
CA 1263855
ABSTRACT OF THE DISCLOSURE The invention relates to a continuously running rewinder with a pressure roller for winding a paper web (1), for instance, from a supercalender onto a reel-up drum (2, 3). The rewinder comprises roll stands (10), which are provided with a primary drive for rotating a rewinding reel-up drum (3), a pressure roller assembly (4) with a pressure roller (6) via which the web (1) is routed to pass before entering the rewinding reel-up drum (3) and which can be actuated to swing from an open position to a closed position toward the roll stands (10) so that the pressure roller assembly (6) is pressed against the rewinding reel-up drum (3) to form with it a nip for the web (1). The rewinder in accordance with the invention comprises a pressing bar (9), whose trajectory is adapted to pass between the pressure roller (6) and the rewinding reel-up drum (3) and via which the web (1) is routed to pass so that when the bar is in its lower position and the pressure roller assembly (4) in its open position the bar holds the web (1) at a lower level than that of the nip. The rewinder in accordance with the invention also comprises a rail/carriage combination (11...14) for transferring the completed roll on the reel up drum (2) off from the roll stands (10) to an exit point (16), as well as a movable secondary drive (15), which can be switched over rotate an almost completed rewinding reel-up drum (2) during the splicing and severing operations of the web. The rewinder in accordance with the inventions facilitates a flying reel-up drum change when using a mandrel rewinder with a pressure roller assembly for rewinding a paper web.
517917
Bjorkman Ari
Haapanen Pekka
Hagel Rauno
Kuosa Harri
Lassila Ari
Kirby Eades Gale Baker
Valmet Paper Machinery Inc.
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