Weaving loom - has weft insertion by acceleration provided by rapid release of airjet projectile equipment

摘要

Acceleration equipment for a weft injector on a weaving loom has a tube, with a projectile for the yarn. Pressure is developed through a valve into a cylinder attached to the tube, and the projectile is released by a catch. The projectile is loaded sideways into the tube, and sealed, and then the catch is rapidly released, by a timing mechanism. The accelerator has a sloping catch to retain the projectile in the tube. This is directly connected to the air chamber with a valve to open and close the air pressure supply inlet, coupled to the timing mechanism. The rear of the projectile has an air inlet and ball grips for the weft. There are angular jets in the projectile walls. Guides move the accelerated weft into the return channel. ADVANTAGE - The valve allows an increased amount of pressure to build up before the quick release catch permits the projectile to move. This allows the accelerator to operate quicker.