Method for avoiding weaving a faulty weft thread during repair of weft thread fault
AssigneeLindauer Dornier Gesellschaft mbH
InventorsAdnan Wahhoud, Werner Birner
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AssigneeLindauer Dornier Gesellschaft mbH
InventorsAdnan Wahhoud, Werner Birner
Estimating the term…
In an air jet loom, a method is provided for avoiding weaving a faulty weft thread such as a broken weft thread into the cloth being woven. When a faulty weft thread is inserted into the loom shed, the failure of the thread to traverse the weaving width is detected preferably optoelectronically by a suitable sensor. Thereupon the weaving operation of the loom is interrupted and a repair thread is inserted into the loom shed to remove the faulty weft thread. The length of the repair thread is less than the normal length of the weft threads that are inserted for the usual weaving operation. Thereby the repair thread is too short by itself to reach the weft thread sensor, and only when the faulty thread is properly connected to the repair thread will the sensor be triggered.
A method for avoiding weaving a faulty weft thread, which has been inserted into a loom shed of an air jet loom, into a cloth being produced on said loom, wherein said loom has a weft insertion nozzle and a thread cutting device at an insertion side of said loom shed and a weft thread arrival sensor at a downstream side of said loom shed opposite said insertion side, and wherein said method comprises the following steps:
A method of determining whether a faulty weft thread has been successfully removed from a loom shed of an air jet loom, comprising the following steps:
Dependencies are inferred from the claim text.