Weft Fault Detection and Loom Stop Systems
topic
Air-jet loom weft fault detection uses weft presence sensors at the far selvedge detecting weft arrival timing, weft feeler sensors confirming complete pick insertion length, and weft break sensors at the nozzle exit detecting supply yarn breaks, with fast electronic stop triggering on detection of missing, short, or broken weft stopping the loom within one pick to minimise the fabric defect length created before machine stop.
Role
Minimises the fabric defect area from weft insertion failures by stopping the loom within one pick of fault detection, with detection speed and reliability determining how quickly defective picks can be removed and insertion resumed without creating extended defective fabric zones that require cutting and restarting rather than simple beat-back and pick repair at the fell line.