METHOD FOR HOLDING A WEFT YARN, JET WEAVING MACHINE COMPRISING A CLAMPING DEVICE FOR THE WEFT YARN, PARTICULARLY SERVING TO CARRY OUT THIS METHOD, AND CARTRIDGE PROVIDED IN THE FORM OF AN EXCHANGEABLE MODULAR UNIT FOR PLACING INSIDE THE MIXING TUBE OF A JET WEAVING MACHINE

摘要

In a jet weaving machine, the clamping device (1) for clamping the weft yarn (2) is situated between two mixing tube sections (5, 6). The housing (10) forms a chamber (9) in which a pneumatic or hydraulic muscle (15) have two lamellar clamping parts (4a, b) is located whose free ends (8a, b) point in the direction of insertion (7) of the weft yarn. The entire mixing tube (3) is located behind an injector that is not depicted. A pressure medium supply (16) is connected to the chamber (9) and is connected to a pressure source via pressure medium lines (19, 20) and via a directional control valve (17). In the depicted position of the directional control valve (17), the pressure is exerted upon the pneumatic or hydraulic muscle (15) so that the free ends (8a, b) of the lamellar clamping parts (4a, b) move inward and hold the weft yarn (2) by clamping. In addition, a piezoelectric or magnetic control of the lamellar clamping parts (4a, b) is provided.