APPARATUS FOR PREVENTING GENERATION OF WEFT BAR IN LOOM

摘要

PURPOSE:To prevent the generation of weft bar caused by the interference between a guide bar and a cloth fell by the slow normal rotation or slow reverse rotation of a loom. CONSTITUTION:A feeding motor 1 is rotated at slow speed in normal direction prior to the slow reverse rotation or slow normal rotation of a loom motor M to prevent the weft insertion miss. The operation of the feeding motor 1 is controlled by a control computer C and the feeding motor 1 is rotated at slow speed in normal direction to a prescribed extent to move the cloth fell W1 from the swinging range of a reed 6 to the side of a woven cloth W. In the case of restarting the weaving operation, the feeding motor 1 is rotated at a slow speed in reverse direction to return the cloth fell W1 to the original position. The normal or abnormal state of the displacement of the cloth fell position can be grasped by the control computer C based on the information on the rotation transmitted from a rotary encoder 1a of the feeding motor 1. When the abnormal state is generated in the displacement of the cloth fell position, the reverse rotation of the motor is continued until the detected tension obtained by a load cell 15 reaches the warp tension immediately before the displacement of the cloth fell position.