Torque measuring and transmitting system for a web spooling mech

Details Torque measuring and transmitting system for a web spooling mech Torque measuring and transmitting system for a web spooling mech

1988-08-11

1990-07-17

Shoop, Jr., William M.

Electricity: motive power systems

With particular motor-driven load device

Tension-maintaining type of motor-control system

318652, B65H 7700

Patent

active

049423436

ABSTRACT:
A web spooling mechanism has a chuck that is coupled to a spool for rotating the spool to wind a length of web material onto the spool. Torque is transmitted from a drive shaft to the chuck through a spring coupled to the shaft and the chuck. A transducer measures the angular relationship between the shaft and the chuck throughout a range of relative angular positions therebetween. The transducer provides a signal indicative of that angular relationship, and the signal is transmitted to a controller that regulates the torque applied by the drive shaft. The position of the chuck relative to the drive shaft during web winding operation is a function of tension transients in the web. Since the system adjusts the torque of the drive shaft as a function of the angular relationship of the chuck and drive shaft, the system is effective to reduce tension transients in the web being wound onto the spool.

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