Apparatus and method for controlling tension in a movable web

Details Apparatus and method for controlling tension in a movable web Apparatus and method for controlling tension in a movable web

1988-02-16

1989-12-26

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

318 7, 226 44, B65H 2308, B65H 2522

Patent

active

048892939

ABSTRACT:
Apparatus for controlling tension in a movable web includes a frame supporting a web supply roll, and a torque motor connected to the supply roll. The web is supported along a web path. Web position is measured by a dancer roll biased against the web. A signal representative of the web position is generated and supplied to a control system, which receives the position signal and generates in response a torque signal representative of a torque value to be applied to the roll to cause the actual web position to equal a nominal position. The control system is connected to the torque motor to control the motor in accordance with the torque signal.

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