CONSTANT TENSION CONTROLLER DEVICE FOR WINDER

摘要

A constant tension controller device for a winder which comprises a differential transformer for generating an output voltage in response to a vertically movable roller moved up and down according to the tension of a yarn, and a tacho-generator connected with a three-phase induction motor for driving a spool for rotation, whereby electric current in one of three power lines of the three-phase induction motor is controlled by a thyrister as a function of the difference between the output voltage of the tacho-generator and the output voltage of the differential transformer so that the yarn of nylon or like material are wound on the spool with a constant tension.