Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1979-03-14
1980-09-09
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
B65H 5438
Patent
active
042213444
ABSTRACT:
An apparatus and method for jointly controlling textile winder package drive roll motors at constant speed and traverse device motors at varying speed, wherein at least a portion of the power generated during recurrent, e.g. periodic dynamic braking and deceleration by the traverse device motors is made available to drive the package drive roll motors. A single AC to DC converter supplies two DC to AC inverters, which in turn supply respectively the package roll drive motors and the traverse device motors, providing an interconnection permitting power feedback. Traverse motor speed varies in response to frequency changes induced by a varying control signal supplied from a signal generator to one inverter. The amount of motor-generated power fed back is optimized by adjusting the control signal amplitude and frequency, and as described more fully herein, means are provided for providing to both motor sets an appropriate voltage/frequency ratio.
REFERENCES:
patent: 3638872 (1972-02-01), Jennings
patent: 3799463 (1974-03-01), Peckinpaugh
patent: 3861607 (1975-01-01), Schippers et al.
patent: 3910514 (1975-10-01), Hooper
patent: 4060208 (1977-11-01), Raasch
Barmag Barmer Maschinenfabrik Aktiengesellschaft
Gilreath Stanley N.
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