US 11,891,257 B2
Film winding system and film stretching unit using such film winding system
Helmut Gumpinger, Anger (DE); Xaver Schwarz, Waging a See (DE); Jens Adler, Siegsdorf (DE); and Anthimos Giapoulis, Traunstein (DE)
Assigned to BRÜCKNER MASCHINENBAU GmbH, Siegsdorf (DE)
Filed by BRÜCKNER MASCHINENBAU GmbH, Siegsdorf (DE)
Filed on Jun. 4, 2021, as Appl. No. 17/339,034.
Claims priority of application No. 10 2020 115 007.5 (DE), filed on Jun. 5, 2020.
Prior Publication US 2021/0380364 A1, Dec. 9, 2021
Int. Cl. B65H 18/16 (2006.01); B65H 23/04 (2006.01)
CPC B65H 23/044 (2013.01) [B65H 18/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A film winding system for a film stretching unit with the following features:
a film entry area is provided, via which a film web to be wound up can be fed to the film winding system;
a first winding station is provided, wherein the first winding station is configured in a winding position to wind the film web into a film bale;
a contact roller and a measuring roller are provided, wherein the contact roller is arranged adjacent to the first winding station in the winding position and is configured to guide the film web to the first winding station;
the measuring roller is arranged in front of the contact roller in the movement direction of the film web and is configured to guide the film web towards the contact roller;
a first adjustment device is provided and configured to move the measuring roller relative to the contact roller along a travel path in such a way that a degree of wrapping over which the film web covers the contact roller can be varied; and,
a control device configured to control the first adjustment device in such a way that it moves the measuring roller in such a way that a predetermined setpoint value for the degree of wrapping is achieved.