Yarn Winder

Abstract

An automatic winder 10 includes a plurality of winding units 11, a plurality of yarn defect detecting devices 31, and a comparing section 42. The plurality of the winding units 11 forms a package 18 by unwinding a yarn 16 wound around a yarn supplying bobbin 15. Each of the plurality of the yarn defect detecting devices 31 is mounted in each of the plurality of the winding units 11, and detects a yarn defect of the yarn 16 wound by each of the winding units 11. A comparing section 42 compares detection results of the plurality of the yarn defect detecting devices 31. The comparing 42 also calculates a tendency of occurrence of the yarn defect in accordance with the detection results of the plurality of the yarn defect detecting devices 31, and compares the tendency of occurrence with the detection result of the yarn defect detecting device 31.

Description

technical field [0001] The present invention mainly relates to a yarn winding machine provided with a yarn defect detection section for each winding unit. Background technique [0002] Conventionally, the following spun yarn winder is known. The spun yarn winder includes: a spinning machine that spins the yarn and winds it around a bobbin; and a bobbin conveying mechanism that automatically conveys the bobbin from the spinning unit of the spinning machine to the take-up unit of the automatic winder by using a tray. Japanese Unexamined Patent Publication No. 2011-20837 discloses such a spun yarn winder. [0003] An automatic winder including the spun yarn winder of JP-A-2011-20837 includes a hairiness detection section for detecting the amount of hairiness of the yarn in each winding unit. The automatic winder performs yarn quality inspection based on the amount of hairiness and the length of the unwound yarn when the amount of hairiness is detected. Thereby, it is possibl...

AI Technical Summary

Problems solved by technology

However, in the structure of Japanese Patent Application Laid-Open No. 2011-20837, it is impossible to determine at which stage the yarn defect occurs

Therefore, the winding of the yarn has to be continued under the condition of frequent occurrence of yarn defects

Especially in the case of yarn defects caused by the winding unit, there are many abnormalities in the parts themselves (damages in the part where the yarn contacts), and yarn defects will occur frequently as long as the parts are not replaced

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