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Method and device for contactless determination of the speed of a running thread of yarn

A non-contact, yarn-based technology, applied to devices that use optical methods, devices that measure the time required to move a certain distance, and measuring devices, etc., can solve the problem that the computing power of the microprocessor cannot meet the requirements, and the continuous processing of signals is difficult, etc. problem, to achieve the effect of smaller occupied space, reduced quantity, and reduced cost

Active Publication Date: 2008-10-01
SAURER GERMANY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At such high yarn speeds and laying frequencies, the continuous processing of signals can lead to difficulties
It may happen that the computing power of the commercially available microprocessor used is far from sufficient

Method used

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  • Method and device for contactless determination of the speed of a running thread of yarn
  • Method and device for contactless determination of the speed of a running thread of yarn
  • Method and device for contactless determination of the speed of a running thread of yarn

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Embodiment Construction

[0032] figure 1 Showing a winding head 1 of a package machine, the figure shows the spinning sequence of the yarn 2 between a spinning bobbin 3 as an unwinding package and a cross-winding package 4 as a winding package. During the winding process, the yarn 2 unwound from the spinning tube passes through a yarn tensioning device 5 , a cutting device 7 and a measuring head 6 . The yarn 2 is wound in a winding device 8 to figure 1 Shown is a cross-winding bobbin 4 that rotates in a clockwise direction. During the winding process, the cross-wound bobbin 4 rests with its surface on a support roller 9 designed as a pressure roller and drives this non-driven pressure roller via a frictional connection. The drive of the cross-wound bobbin 4 takes place via the shaft of the cross-wound bobbin 4 by means of a transmission arranged directly on the creel 10 or integrated in the creel 10 . The winder 1 has a yarn reciprocating mechanism 27 for the reciprocating movement of the yarn 2 du...

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PUM

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Abstract

In order to detecting the speed of a moving yarn on one winding head of a weaving machine by a sensing device without touch, a laser bean (33) is produced by a light source and divided into two laser beans (35 and 36) which are resuperimposed on the moving yarn (2). Detecting signals are formed by a reflected light of the yarn by means of laser-doppler-anemometry. These signals are used for analyzing length measurement and confirming exactly the yarn faults. The invention is used economically for improving the quality of the yarn (2).

Description

technical field [0001] The invention relates to a method for the contactless determination of the speed of a moving yarn on the winder head of a winding machine with a sensor device, wherein the measuring signal for the length measurement is analyzed and the result of the length measurement is used for precise determination Yarn defect. [0002] The invention also relates to a device for carrying out the method for non-contact determination of the speed of a moving yarn with a sensor device. Background technique [0003] The winders of modern textile machines producing cross-winding are equipped with speed and length measuring devices for the moving yarn. The ever-increasing demands on yarn quality require monitoring of yarn parameters such as yarn diameter not only at selected winders but also at each individual winder. When monitoring yarn diameter, it is necessary to evaluate whether the error in the nominal diameter of the yarn is classified as a yarn defect, and the l...

Claims

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Application Information

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IPC IPC(8): G01P3/68G01P3/80B65H61/00B65H63/06G01P3/36G01P5/00
CPCB65H63/065B65H2701/31G01P3/366B65H61/005
Inventor C·施图尔姆G·施皮克斯F·-J·赫尔曼斯M·林登
Owner SAURER GERMANY GMBH & CO KG