Detection device for judging whether the yarn is broken or not

Abstract

A detection device for judging whether the yarn is broken or not, including a mounting seat plate, characterized in that: the middle part of the balance bending plate is hinged to the mounting seat plate through a shaft, and the yarn guide end of the balance bending plate is provided with a guide wire The counterweight end of the balance bent plate is provided with a counterweight; there is also a micro switch on one side of the counter weight end of the balance bent plate, and the normally open contact drive piece of the micro switch is connected with the balance weight The balance bent plate contact portion at the end is in contact with; the balance bent plate contact portion is located on the side opposite to the counterweight. The detection device for judging whether the yarn is broken according to the present invention can accurately judge the working condition of the yarn broken by adopting the cooperation mode of the balance bending plate, the counterweight and the micro switch, and solves the problem of fine yarn breaking. The problem of detection of yarn breakage during double-ply straight twisting of denier yarn.

Description

technical field [0001] The invention relates to parts of a twisting machine in a textile machine, in particular to a detection device for judging whether a yarn is broken. Background technique [0002] Known broken yarn detection devices mainly include pressure type and photoelectric type yarn broken wire detection devices. The pressure-type yarn breakage detection device judges the problem of yarn breakage in one strand or two strands through the change of the force of the yarn on the pressure sensor. Only when the tension changes are also large can a correct judgment be made. When the fine denier yarn is double-strand straight-twisted, the tension fluctuation of the broken yarn is small, and the pressure-type yarn broken yarn detection device cannot make a correct judgment. The photoelectric yarn broken yarn detection device judges whether the yarn is broken through the voltage change caused by the change of yarn displacement. In the straight twisting process, when one ...

AI Technical Summary

Problems solved by technology

When the fine denier yarn is double-strand straight-twisted, the tension fluctuation of the broken yarn is small, and the pressure-type yarn broken yarn detection device cannot make a correct judgment

The photoelectric yarn broken yarn detection device judges whether the yarn is broken through the voltage change caused by the change of yarn displacement. In the straight twisting process, when one strand of yarn is broken, another strand of yarn will pass through the photoelectric yarn breakage detection device. In this case, it cannot make a correct judgment.

In short, whether it is a pressure type or a photoelectric yarn breakage detection device, it cannot accurately judge the breakage of one strand of yarn when detecting double-ply fine-denier straight-twisted yarn breakage.

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