OPTICAL DEVICE FOR THE RECOVERY OF COURT TRAINS IN A TESSICAL TELEVISION

摘要

An optical device for the detection of short wefts in a weaving machine of the type wherein weft threads (T) are subsequently inserted into the shed formed between warp threads, and hence beaten by a reed (R) against the fabric being formed (C), and wherein a weaving machine control system halts the weaving machine operation when it receives a signal corresponding to the absence of the weft thread in at least one predefined weft thread detection position, includes:a. at least one base optical unit, provided with an optical transmitter and an optical receiver, and a processing unit;b. at least one corresponding optical fibre sensor comprising two prongs (1t, 1b) supporting respective optical fibres (3, 4), each one housed in an own seat;c. a processing unit of said detected signal which verifies the presence/absence of the weft thread.