Jet loom

Abstract

This invention relates to an air jet weaving machine, which preventes weft yarn loosing, detwisting and being blown down from wefting nozzle during weaving machine halting through using simple structure of the weaving machine in existence. The weaving machine is stopped, at the state that the weft yarn wefted just before the weaving machine is about to stop is the by fiber payoff cutter is cut, comprising: control device for controlling weft yarn holding, relieving action of distance measuring and stocking arrangement, spraying action of wefting nozzle and opening action of warp opening device. After the weaving machine stops, the opening device is controlled to make the warp thread at waiting state, and then the hold mode to weft yarn at the distance measuring and stocking arrangement isrelieved, and the compressed air is jetted using the said wefting nozzle, at last the weft yarn of the preset length is emitted from the wefting nozzle towards warp. The invention also comprises a starting method of weaving machine. After the above action, a part of the said weft yarn ejected and extended from the front end of the wefting nozzle is fixed on the textile, and the ejected weft yarn is installed on the front of the said fiber payoff cutter.

Description

technical field [0001] The invention relates to a method for starting an air-jet loom. Background technique [0002] In the case of an air-jet loom, during the stoppage of the loom from the shutdown due to poor weft insertion to the weaver’s repair operation and restart of the loom, low-pressure compressed air is sprayed from the weft insertion nozzle to keep the front end of the weft yarn at Inside the weft insertion nozzle. [0003] At this time, when using a yarn that is easy to loosen or untwist as the weft yarn, for example, a yarn that is covered around the core yarn such as a twisted core yarn, due to the need to stop the loom as described above, To maintain the weft yarn, it is necessary to spray compressed air from the weft injection nozzle constantly, and the front end of the weft yarn is exposed in a state blown by the injection of compressed air, so due to the strength of the injection force, when the winding of the core-spun yarn is weak, the winding will be di...

AI Technical Summary

Problems solved by technology

[0011] However, for the device disclosed in Patent Document 1, in order to prevent the untwisting or loosening of the weft yarn, multiple components such as the above-mentioned weft yarn holding member, weft yarn guiding device, and weft yarn cutting member must be provided, so the cost is increased. , and the control of each component is also very complicated

[0012] In addition, when the grasping of the weft yarn blown by the nozzle fails, the dropped weft yarn will be entangled on peripheral devices such as the weft yarn cutting member, and it will take time to remove the entangled weft yarn, which will cause a decrease in the operating rate.

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