DEVICE FOR TENSION CONTROL OF WEFT RIBBON ON WEAVING SHUTTLE, WEAVING SHUTTLE EQUIPPED WITH IT AND CIRCULAR WEAVING MACHINE Russian patent published in 2013 - IPC D03D37/00 

FIELD: textiles, paper.

SUBSTANCE: weaving shuttle (30) has means (3) to change the direction of the ribbon and the spool (1) for the weft ribbons. It is possible to wind the weft ribbons (2) from the coil with the direction through the device (3) for changing the direction of the ribbon. The weft ribbon tension (FS) resulting from winding the weft ribbon deflects the device (3) for changing the direction of the ribbon against the rebalance force (FR). The device (20) for adjusting the tension of weft ribbons comprises: a sensor (5) of deflection which measures instantaneous position of the device (3) for changing the direction of the ribbon and generates a signal (5a) of the deviation in the form of a function of the measured position; the computing device (12) in which the signal on the deviation (5a) is given, and the variable electromechanical load (6, 14) with which the coil (1) of weft ribbons a variable braking torque is applied (7) depending on the regulating variable (u). The computing device (12) from the signal on the deviation given to it (5a) develops a regulating variable (u) for setting the electromechanical variable load (6, 14) so that a predetermined value of the device (3) position is set for changing the direction of the ribbon and thereby also the predetermined tension value (FS) of the weft ribbon.

EFFECT: invention enables to provide a constant tension and gives the ability to control the instantaneous weft tension.

16 cl, 4 dwg