US 12,258,234 B2
Roll unwinding cradle
Victor L. Chun, Beaverton, MI (US); and Robert Abel, Beaverton, MI (US)
Assigned to BROWN LLC, Beaverton, MI (US)
Filed by Brown LLC, Beaverton, MI (US)
Filed on Mar. 15, 2024, as Appl. No. 18/606,131.
Claims priority of provisional application 63/496,527, filed on Apr. 17, 2023.
Prior Publication US 2024/0343516 A1, Oct. 17, 2024
Int. Cl. B65H 16/08 (2006.01); B65H 16/10 (2006.01)
CPC B65H 16/08 (2013.01) [B65H 16/106 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A system for unwinding a roll of plastic or paper material, the system comprising:
an unwinding roller for supporting the roll of material;
an idle roller spaced apart from the unwinding roller so that the roll of material can be supported on the idle roller and the unwinding roller;
a first motor in mechanical communication with the unwinding roller and configured to axially rotate the unwinding roller;
a pull roller operable to rotate to pull material from the roll of material;
a second motor in mechanical communication with the pull roller and configured to cause the pull roller to rotate;
a pinch roller operable to rotate with the pull roller;
a biasing element configured to maintain pressure between the pinch roller and the pull roller; and
a controller configured to send control signals representative of a desired rotational speed to the first motor, and send control signals representative of a desired torque to the second motor so that a constant linear speed of the material is achieved.