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Method of optimizing internal negative pressure of vacuum device of textile machine for making cross wound bobbins

A technology of cross-winding bobbins and vacuum devices, which is applied to spinning machines, textiles and papermaking, and open-end spinning machines, and can solve problems such as increasing vacuum demand

Active Publication Date: 2014-08-27
SAURER GERMANY GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of this method according to the prior art is that the increased vacuum requirement is maintained until the event is over

Method used

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  • Method of optimizing internal negative pressure of vacuum device of textile machine for making cross wound bobbins
  • Method of optimizing internal negative pressure of vacuum device of textile machine for making cross wound bobbins

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Embodiment Construction

[0020] figure 1 The event E curve at the station is shown plotted against time t. Event E in this example is a broken yarn and broken yarn repair on the winder. A yarn break occurs at time 1. The cross-wound bobbin on which the yarn is wound is lifted by the bobbin drive rollers driving it and braked for time b. When at time 2, the cross-wound bobbin is stationary, it starts to switch to broken yarn repair. At time 3, the suction nozzles are in position to pick up the veil from the cross-wound bobbin, while the under-pressure gripper bobbin catches the ground yarn from the feed bobbin in the unwinding position. The period s1 contains all sub-processes until the end of the event, ie the end of the yarn joining cycle. Only during period s2 there is a higher vacuum requirement for successful yarn capture. A signal is sent at time 4 that the veil has been successfully captured and that higher negative pressure is no longer required. During time period s3, both the suction no...

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Abstract

The invention relates to a method of optimizing internal negative pressure of a vacuum device of a textile machine for making cross wound bobbins. The vacuum device has a suction machine group. The textile machine comprises a plurality of workstations with diversified vacuum demands. To satisfy the vacuum demands, the negative pressure should not be lowered to a specified level satisfying a basic demand. The suction power of the suction machine group is adjusted through an adjusting mechanism in a way to provide a negative pressure greater than the specified level as a working requirement when a yarn with higher vacuum demands is reported to be broken during a yarn connecting period or a yarn is cut. According to the embodiments, a yarn head on the side of a winding bobbin is successfully found through the sensor. A success signal is sent to the adjusting mechanism of the vacuum device. Later, a request for higher vacuum demands for related workstation is deleted in the adjusting mechanism.

Description

technical field [0001] The present invention relates to a method for optimizing the negative pressure in a vacuum device with a suction unit of a textile machine for producing cross-wound bobbins, said textile machine comprising a plurality of stations with varying vacuum requirements, wherein in order to meet the vacuum requirements , the negative pressure should not drop below a determined level that meets the basic requirements, and the suction power regulation of the suction unit is carried out by the regulating mechanism in such a way that, when notified that its repair occurs, it leads to a higher vacuum during the piecing cycle When the required yarn breaks or yarn is cut, a negative pressure that increases with a predetermined value is provided as a work requirement. Background technique [0002] Textile machines such as winders for making cross-wound bobbins are known for a long time and generally consist of a number of identical stations connected in series side by...

Claims

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Application Information

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IPC IPC(8): B65H54/88B65H69/00
CPCB65H54/88D01H11/00D01H4/06D01H5/66B65H54/707B65H2701/31
Inventor T·福歇
Owner SAURER GERMANY GMBH & CO KG
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