用于增强断纬自清装置可靠性的机器监测系统

Automatic removal of faulty weft yarns:increase of reliability through machine vision system

高科技织物需有高质量的检测。织物的质量需求因其特定应用而异,如对于汽车安全气囊而言,含有疵点是不可接受的。织造过程中的断纬是织物出现疵点的一个可能原因。为在喷气织造过程中清理断纬,现代织机上普遍安装有自动清除断纬的系统,该系统的可靠性约为80%。尽管自动清除系统显示清除成功,但梭口内仍然有污点或断纬纱片的情况占20%。研究旨在将纬纱自动清除系统的可靠性提高至95%,以提高织造厂加工高品质科技织物的生产率。减少断纬率造成的停机时间可大幅提高喷气织机的织造效率。为增强断纬自动清除系统的可靠性,开发了一种用于检查喷气织机梭口的断纬机器监测系统。在完成自动清纱程序后,机器监测系统还会检查梭口是否清理干净。

Technical fabrics demand high quality measures.Depending on the specific application,e.g.airbags for automotive industry,fabric defects are unacceptable.A possible reason for fabric defects are faulty weft yarns.To fix faulty weft yarn in air-jet weaving,modern machine have a system for automatic removal of faulty weft yarns.This system has a reliability of about 80%.In 20% of the cases,the automatic removal system reports successful removal to the machine but there is still dirt or fragments of the faulty weft yarn in the shed.The goal is to increase the reliability of the system for automatic removal of faulty weft yarns to 95%in order to increase the productivity of weaving mills for high quality technical fabrics.The time loss caused by faulty weft yarns is reduced.Thus,the efficiency of the air-jet weaving process is increased.In order to increase the reliability of the system for automatic removal of faulty weft yarns,a machine vision system for shed inspection in air-jet weaving machines has been developed.The machine vision system checks if the shed is clean after the automatic yarn removal procedure is completed.