Yarn strength weak ring detection and elimination method and apparatus

Abstract

The invention discloses a yarn strength weak ring detection and elimination method and apparatus. The apparatus is formed by a capacitance type sensor, a photoelectric sensor and a plurality of processing units; Yarns pass through the capacitance type sensor and the photoelectric sensor at the same time; signals of uneven yarn thickness and uneven diameter signals are sent to related processing units; uneven thickness signals of yarns are output by the capacitance type sensor after the yarns passing through the sensor are sent to the processing unit and cross section yarn numbers (Tn) can be calculated via uneven yarn density; wand hen a certain yarn is Tn and lower than a certain value and a Rho value is lower than a threshold value, the yarn section possesses a strong weak ring. The invention provides a yarn weak ring online detection method and apparatus; and the weak ring can be eliminated as needed; yarn break and machine stop due to yarn strength weak ring can be reduced; and production efficiency and economic benefits can be improved.

Description

【Technical field】 [0001] The invention relates to the winding process of yarn production in the spinning industry and the quality inspection of yarn products, in particular to a method and device for detecting and removing strong and weak links of yarn. 【Background technique】 [0002] During the yarn production process, due to process defects, equipment failure and environmental factors, the strength of some yarns is reduced and the tensile resistance is reduced. The use of this yarn in subsequent processes (warping, sizing and weaving) will cause end breaks, seriously affecting production efficiency and benefits. Currently, there is no efficient way to measure yarn strength weak spots. In the yarn laboratory, the average breaking strength of the yarn is measured with a single yarn strength meter. Average breaking strength does not reflect yarn strength weak spots. Due to the small number of test samples, the probability of being able to detect weak spots in the yarn is v...

AI Technical Summary

Problems solved by technology

[0002] During the yarn production process, due to process defects, equipment failures and environmental factors, the strength of some yarns is reduced and the tensile strength is reduced

The use of this yarn in subsequent processes (warping, sizing and weaving) will cause end breaks, seriously affecting production efficiency and benefits

Currently, there is no efficient way to measure yarn strength weak loops

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