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Method and device for picture disruption when winding a thread

A technology of yarn and winding ratio, applied in the field of devices for performing the method, capable of solving problems such as adverse effects on the appearance of cross winding drums

Inactive Publication Date: 2012-08-08
SAURER GERMANY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the strong variation of the crossing angle, so-called flank rings (Flanken rings) may appear on the end face of the package, and the so-called flank rings have a negative impact on the appearance of the cross winding drum

Method used

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  • Method and device for picture disruption when winding a thread
  • Method and device for picture disruption when winding a thread
  • Method and device for picture disruption when winding a thread

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 A winding device 4 of a textile machine for producing cross-winding bobbins is shown. As shown, the cross winding bobbin 8 held freely rotatably in a creel (not shown) is placed on the winding roller 11 and is driven by the winding roller 11 by means of a friction fit. The winding roller 11 is here connected to a drive device 12 which in turn is connected to a control unit 19 via a control line 23 . In addition, a yarn traversing device 16 is provided to move the yarn 7 during the winding of the yarn 7 onto the bobbin 8; the traverse yarn guide 18 of the yarn traversing device 16 is driven by its own drive ( Preferably, the stepper motor 20) is driven in an oscillating manner. A stepper motor 20 can also be connected to the control unit 19 via a control line 24, and the control unit 19 can activate the stepper motor 20 in a predetermined manner. Furthermore, a sensor device 21 is provided, which is connected to the control unit 19 via a signal line 22 and wh...

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PUM

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Abstract

The invention relates to a method for preventing overlapping and winding when a yarn (7) is winded on a cross winding cartridge (8) in a random winding mode, wherein a traversing frequency (f) is changed between a minimum (fmin) and a maximum value (fmax) continuously, and is changed during approaching of a pre-determined critical winding ratio (wK) such that temporary average value of the changing frequency changes erratically, and in which the traversing frequency (f) is changed additionally for the change of the temporal average value such that the distance (deltaf) of the minimum (fmin) and the maximum value (fmax) is reduced during approaching of the critical winding ratio (wK) and increased after leaving the critical winding ratio (wK). Furthermore the invention also relates to a device for implementing the method.

Description

technical field [0001] The present invention relates to a method of anti-lapping when yarn is wound onto a cross bobbin in a random winding manner, wherein the traverse frequency is continuously varied between a minimum value and a maximum value, and close to a predetermined When the critical winding ratio is reached, the traversing frequency is changed in such a way that the short-term average value of the traversing frequency is changed stepwise. Furthermore, the invention relates to a device for carrying out the method, said device having: a drive for driving the cross winding drum; and a drive device independent of said drive and having a control unit for traversing yarn. Background technique [0002] The winding of the cross winding drum can basically be divided into two winding methods. One is precision winding and the other is random winding. [0003] In the case of precision winding there is a constant ratio between the package rotational speed and the yarn traver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H54/38
CPCB65H2701/31B65H54/38
Inventor 哈拉尔德·米勒斯安斯加尔·帕申彼得·施瓦兹
Owner SAURER GERMANY GMBH & CO KG