METHOD AND APPARATUS FOR DETECTING WARP BREAKAGE OF FLUID INJECTION WEAVING MACHINE

摘要

A technique to detect a weft shortage is applied to a technique to detect a weft shortage in a fluid jet loom for inserting a plurality of wefts (12) simultaneously into a warp shedding. Such a technique to detect a weft shortage is characterized by measuring an arrival timing of the weft through a weft sensor (34) disposed in a weft moving path, comparing the measured arrival timing with the reference timing, and detecting as a weft shortage when a state that the arrival timing is earlier than the reference timing occurs a predetermined number of times in a row.