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Weft Yarn Flying State Detecting Device in Air-jet Loom

A technology of flight status and detection device, applied in looms, textiles, textiles and papermaking, etc., can solve problems such as difficulty in judgment, and achieve the effect of easy setting

Active Publication Date: 2020-10-16
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for a worker to determine how much margin to set the injection pressure with respect to the lower limit value only by the injection pressure of the sub-nozzle obtained as described above.

Method used

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  • Weft Yarn Flying State Detecting Device in Air-jet Loom
  • Weft Yarn Flying State Detecting Device in Air-jet Loom
  • Weft Yarn Flying State Detecting Device in Air-jet Loom

Examples

Experimental program
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Embodiment Construction

[0028] Below, according to Figure 1 to Figure 6 An embodiment in which a weft flying state detection device in an air-jet loom is embodied will be described. In addition, in the following description, the side opposite to the weft insertion direction is referred to as upstream, and the weft insertion direction side is referred to as downstream in the weft insertion direction in which the weft yarn is inserted into the warp opening and fed.

[0029] Such as figure 1 As shown, the weft insertion device 10 includes: a weft insertion nozzle 11 , a yarn feeding part 12 , a weft yarn length measuring and accumulating device 13 , a reed 14 , a plurality of sub-nozzles 15 and a control device 16 . A display device 16 a having a display function and an input function is attached to the control device 16 .

[0030]The yarn supplying section 12 is disposed upstream of the weft insertion nozzle 11 . The weft yarn Y of the yarn supplying unit 12 is drawn out by the rotation of a windin...

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PUM

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Abstract

A weft traveling condition detection apparatus in an air jet loom detects a traveling condition of a weft yarn that is inserted through a weft passage by air injection of a main nozzle and a sub-nozzle. The apparatus includes a balloon sensor, and a first weft sensor, and a comparison processer determining a time difference. The apparatus includes a first memory storing data of values representing the time difference relative to an injection pressure of the sub-nozzle, a second weft sensor, and an averaging processor averaging an integrated voltage for different injection pressure of the sub-nozzle to determine the average of the integral value, a second memory storing data of values representing the average of integral value relative to the injection pressure, and a display on which the data of values stored in the first and second memories are indicated in one chart.

Description

technical field [0001] The present invention relates to a device for detecting the flying state of weft yarns in an air-jet loom, and relates in detail to the detection of the flying state of weft yarns in an air-jet loom that detects the flying state of a weft yarn inserted through a weft yarn flight path by air jets from a main nozzle and a secondary nozzle device. Background technique [0002] In the air-jet loom, the weft insertion state of the weft yarn is greatly affected by the pressure setting of the compressed air. Conventionally, Patent Document 1 and Patent Document 2 propose a pressure control device for weft insertion in an air jet chamber capable of eliminating weft slack and weft insertion errors and reducing the consumption of jet fluid. [0003] In Patent Document 1, the weft yarn unwinding end timing and the weft yarn front end arrival timing are detected in the weft yarn length measuring and accumulating device, and the injection pressure of the main nozz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D47/30
CPCD03D47/304D03D47/3073D03D47/3093
Inventor 牧野洋一松木阳平
Owner TOYOTA IND CORP