Pick jet nozzle of water jet loom

A water jet and nozzle technology, applied in looms, textiles, textiles and papermaking, etc., can solve the problems of non-uniform water flow, large diffusion of jet water, and centrifugal force to promote diffusion, and achieve the effect of good uniformity and improved productivity.

Inactive Publication Date: 2004-07-14
TSUDAKOMA KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in any of the techniques of these Patent Documents 1 to 3, the rectifying vanes or rectifying grooves are formed along the axial direction of the nozzle, and the pressurized water passing through each rectifying groove merges while colliding violently with the outer periphery of the needle. Problems with turbulent flow or large spread of jet water after jetting
Furthermore, according to the technique of Patent Document 4, since the straightening groove is provided eccentrically with respect to the nozzle

Method used

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  • Pick jet nozzle of water jet loom
  • Pick jet nozzle of water jet loom
  • Pick jet nozzle of water jet loom

Examples

Experimental program
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Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0034] Figure 1A It is a side sectional view showing the shape of the weft insertion nozzle 1 of the water jet loom according to the present invention, the yarn guide hole 11 of the needle 2 penetrates in the direction of the nozzle axis 8, and the outer diameter portion changes stepwise in the yarn guide direction. Thin, thus forming a thin head shape to the front end. The nozzle main body 3 has a hollow portion formed by narrowing the inner diameter of the injection hole 20 on the right side in a step shape, and the straightening member 4 incorporating the straightening fins 9 is integrally accommodated at the bottom of the step.

[0035] The needle 2 is inserted into the hollow portion 29 so as to coincide with the axis of the nozzle body 3, and the annular chamber 15 is formed by the stepped outer peripheral surface 27 of the needle 2 and the inner perip...

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Abstract

In the weft inserting nozzle with which straightening fins are arranged between a ring-shaped chamber and a nozzle, a plurality of straightening fins are arranged on the inner peripheral surface of a nozzle main body at intervals in the circumference direction and extended on the outer peripheral surface of a needle in the nozzle axis direction, the bottom of a straightening groove defined by the inner peripheral surface of the nozzle main body and the adjacent straightening fins is extended in the same direction as that of the generatrix of the inner peripheral surface of the nozzle main body and the side faces of the straightening fins are extended so that the central lines of the straightening fins have angles to the radial directions. A jet water flow having uniformity as a while is injected by the weft inserting nozzle of a water injection type. Diffusion after the injection is reduced to improve productivity of woven fabric.

Description

technical field [0001] The invention relates to a weft insertion nozzle of a water jet loom. Background technique [0002] In order to reduce the spread of the pressure water sprayed from the weft insertion nozzle, there are examples listed in Patent Documents 1 to 3 described later: the shape of each part such as the needle and the nozzle main body has been repeatedly improved from the straightening member. The weft injection nozzle of the water jet loom is provided with: a needle forming a guide hole through which the weft yarn passes, a nozzle body forming a hollow part for inserting the needle and having a water supply hole communicating with the outer peripheral surface, and a nozzle body passing through the needle. The annular chamber defined by the outer peripheral surface and the inner peripheral surface of the nozzle body is composed of a rectifying member and the like that are installed in the nozzle body at a position between the annular chamber and the spray hole...

Claims

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Application Information

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IPC IPC(8): D03D47/32
Inventor 服部恒一
Owner TSUDAKOMA KOGYO KK
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