METHOD OF CONTROLLING THE KNOTTING PROCEDURE IN TEXTILE MACHINES, PARTICULARLY AUTOMATIC WINDING MACHINES AND PNEUMATIC CIRCUIT FOR PERFORMING SAID METHOD

摘要

Improved method and apparatus for controlling the yarn knotting procedure in textile machines. The invention is particularly adapted for application of winding machines having a source of supply of yarn from which the yarn travels to the winding mechanism, and a knotting mechanism disposed downstream of the winding mechanism. The apparatus includes means for detecting the absence of yarn under tension in a zone downstream of the knotting mechanism, fluid pressure means for initiating the operation of the knotting mechanism, a source of fluid under pressure, conduit means including a valve means selectively connecting the fluid pressure source and the means for operating the knotting mechanism, and means operated by the yarn tension detecting means for operating the valve means to actuate the knotting mechanism.