Web tension apparatus with sensor switch arrangement for oscilliating dancer roll and method
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United States of America Patent
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Aug 20, 1996
Grant Date -
N/A
app pub date -
Aug 19, 1994
filing date -
Aug 19, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A web tension control apparatus and method utilizes a control for a drive motor (A) including an oscillating roll (B) for moving a cam (C) in relation to a proximity sensor (E) for controlling the tension in the moving web being transported for takeup. The power output of the proximity sensor is transmitted for controlling the output of a motor by control circuit (D) for maintaining the tension in the moving web within desirable limits.
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