Method for monitoring quality of yarn at workplace of textile machine

A technology of textile machinery and yarn, which is applied in the field of monitoring yarn quality at the workstation of textile machinery, which can solve problems that hinder the productivity of textile machinery and achieve the effect of eliminating yarn defects

Active Publication Date: 2012-09-05
SAURER GERMANY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This practice often hampers the productivity of textile machinery

Method used

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  • Method for monitoring quality of yarn at workplace of textile machine
  • Method for monitoring quality of yarn at workplace of textile machine
  • Method for monitoring quality of yarn at workplace of textile machine

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Experimental program
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Embodiment Construction

[0017] The method according to the invention will be explained below in connection with an air spinning machine, but it can of course also be applied to other textile machines in which checking and / or monitoring devices are provided for controlling the quality of the longitudinally moving yarn.

[0018] exist figure 1 In the spinning station 1 of the shown open-end rotor spinning machine, the yarn 19 is wound from the spinning box 3 to the cross-winding bobbin 4 via the yarn unwinding tube 2 . The yarn 19 passes between the unwinding tube 2 and the cross-winding bobbin 4 through a yarn clearer 5 for monitoring quality and then through a yarn guide eye 9, wherein the yarn clearer 5 comprises a measuring head 6, a shearing device 7 and Processor 8. The drive drum 10 drives the cross-wound package 4 by means of a friction fit during the winding process. The motor 11 causes the drive drum 10 to perform the rotational movement required for the winding process.

[0019] The yarn ...

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PUM

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Abstract

The invention relates to a method for quality monitoring of longitudinally moving yarn at workplace of textile machine manufacturing cross-coil, wherein, the yarn fault is, related to the diameter deviation and longitudinal length of the yarn, estimated in the yarn by aid of an inspecting apparatus and an estimating apparatus, which is realized by comparing the diameter deviation with the clearing threshold value and removing the deviations positioned over the clearing threshold value, wherein, a width is set in a coordinate system for the position of the clearing threshold value and definedby an upper limit and a lower limit, wherein, the fluctuation of the diameter under the lower limit can not be estimated into the yarn fault, while each yarn fault over the upper limit is removed, and based on the given yarn quality each time on the station, the clearing threshold value is changed in the way that the amount of the yarn fault located between the clearing threshold value and the lower limit and therefore being retained in the yarn can not exceed that of the predetermined yarn fault in the yarn in a unit of length or plane fabric in a unit of length made of the yarn dependent onthe quality.

Description

technical field [0001] The invention relates to a method for monitoring the quality of a yarn moving longitudinally at a station of a textile machine for the manufacture of cross-wound bobbins, in which method, by means of a device, in relation to the diameter deviation and the longitudinal length of the yarn Evaluation and classification of yarn defects in the yarn by comparing the determined deviations with predetermined yarn clearing thresholds (Reinigungsgrenze). Background technique [0002] EP 0 877 108 B1 discloses a method for monitoring the quality of a longitudinally moving yarn. According to the method, measurable properties of the yarn are detected during yarn manufacture or during yarn rewinding, wherein the yarn faults to be removed are defined by an adjustable yarn clearing threshold, whereby it is determined which yarn faults have to be removed And which do not need to be cleared. The method according to EP 0 877 108 B1 also provides that the yarn clearing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H63/06D01H13/22
CPCB65H63/064D01H13/22B65H63/065B65H2701/31B65H63/062G01N33/365
Inventor 艾里斯·比尔曼奥拉夫·伯莱姆格哈德·里纳斯
Owner SAURER GERMANY GMBH & CO KG
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