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Device for setting weft insertion conditions in air jet looms

A technology of weft yarn and condition, which is applied in the equipment field of weft yarn insertion condition, and can solve problems such as uncovered

Inactive Publication Date: 2015-09-02
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, such past data do not cover all fabric and weaving conditions and do not necessarily lead to optimal weft insertion and energy savings

Method used

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  • Device for setting weft insertion conditions in air jet looms
  • Device for setting weft insertion conditions in air jet looms
  • Device for setting weft insertion conditions in air jet looms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] See below Figure 1-6 One embodiment of an apparatus for setting weft yarn insertion conditions in an air jet loom according to the present invention will be described. It should be noted that the terms "upstream" and "downstream" appearing in the following description are used to indicate the direction or relative position with respect to the direction along which the weft yarn is inserted into the warp shed, And compressed air supplied from an external source flows in the one direction.

[0016] see figure 1 , the air jet loom marked by 1 includes a weft insertion (weft insertion) device 2 , a plurality of sub-nozzles 3 and an end nozzle 4 arranged downstream of the weft insertion device 2 along a reed 59 having a plurality of reed teeth 58 . In the figure, the compressed air supply lines leading to the weft thread insertion device 2, the secondary nozzle 3 and the end nozzle 4 are also shown in the form of a block diagram. The weft thread insertion device 2 has a ...

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PUM

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Abstract

An apparatus for setting weft insertion condition in an air jet loom includes a weft insertion device causing a weft yarn to move by compressed air injected from a main nozzle and plural sub-nozzles arranged in the direction of weft insertion, and a controller storing fabric conditions and weaving conditions. The controller stores a database in which data of optimum sub-nozzle pressure is linked to data of loom speed for different types of reed dent. The data of optimum sub-nozzle pressure is obtained based on the variation of angular difference between the time of weft insertion completion and the time of weft release completion in the fabric conditions and the weaving conditions. The controller selects the optimum sub-nozzle pressure from the database based on the fabric conditions, the type of reed dent and the loom speed.

Description

technical field [0001] The present invention relates to a device for setting weft yarn insertion conditions in an air jet loom. Background technique [0002] In order to weave fabrics in an air jet loom, the weaving conditions (compressed air pressure at the main nozzle, tandem nozzle and sub nozzle and loom speed etc.) are input to the controller in advance as the initial setting of the weaving conditions. Generally, the initial weaving condition is set to maintain the timing of weft yarn reaching the side of the reed opposite to the main nozzle, and also to provide stable flight of weft yarn. Recently it has been proposed to perform weft thread insertion with reduced compressed air pressure at the sub-nozzle in order to provide energy savings in air jet looms. [0003] Japanese Unexamined Patent Application Publication No. 4-241135 discloses a pressure control device in an air jet loom that allows less consumption of compressed air for weft insertion while preventing wef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D47/30D03J1/00
CPCD03D47/304D03D47/3033
Inventor 牧野洋一高木信次荒井隆二
Owner TOYOTA IND CORP