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Weft supply injector of jet loom

A technology of air-jet loom and weft yarn, which is applied in looms, textiles, textiles and papermaking, etc., and can solve the problem of increasing weft yarn introduction speed

Inactive Publication Date: 2003-02-12
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the nozzle for threading the yarn disclosed in Japanese Patent Application Laid-Open No. Hei 9-21035, a significant increase in the weft yarn introduction speed cannot be expected.

Method used

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  • Weft supply injector of jet loom
  • Weft supply injector of jet loom
  • Weft supply injector of jet loom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] A first embodiment of the invention will now be described with reference to FIGS. 1 , 2 and 6 .

[0018] As shown in Figure 1A, a weft delivery nozzle 11 comprises a cylindrical nozzle main body 12, an accelerating tube 13 assembled in the nozzle main body 12, a cylindrical yarn guide 14 threadedly engaged with the nozzle main body 12, and a The nozzle 14 is fastened to a lock nut 15 on the nozzle body 12 .

[0019] The front end portion of the yarn guide 14 is shaped as a conical flow passage forming portion 141, and a plurality of positioning fins 142 are circumferentially provided in the middle of the flow passage forming portion. The tip of the positioning fin 142 is in contact with the inner edge surface of the nozzle body 12 . The accelerating tube 13 includes a base tube 131 fitted in the nozzle body 12 and a thin tube 132 fitted in the base tube 131 . The front end portion of this flow passage forming portion 141 forming the yarn guide 14 enters into the base ...

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PUM

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Abstract

A deflective inflow portion 18 is formed at the forward end of a flow passage forming portion 141 of a thread guide 14. The deflective inflow portion 18 is formed by cutting the forward end portion of the flow passage forming portion 141 along a plane S obliquely intersecting the center axis line L of a weft passage 143. When forming the deflective inflow portion by cutting along the plane, the cutting is effected from the outlet 144 of the weft passage 143 toward the inlet 145 of the weft passage 143. The deflective inflow portion 18 is entirely surrounded by an air flow passage 16.

Description

technical field [0001] The invention relates to weft delivery nozzles in air-jet looms. Background technique [0002] In the air-jet loom, the weft yarn is stored for length measurement in the storage device for the length measurement of the weft yarn, and the stored weft yarn is drawn from the weft yarn length measurement storage device by the air jet action of the weft yarn before the action of weft yarn introduction occurs. in the main nozzle. In order to obtain the increase in speed, which is also an advantage of air-jet looms, the speed at which weft thread insertion takes place must be increased. The weft thread must therefore be withdrawn from the weft thread length measuring storage device within a defined period of time. [0003] In the threading yarn nozzle disclosed in Japanese Patent Application Laid-Open No. Hei 9-21035, a plurality of slits are provided at the front end of the yarn guide to avoid rapid diffusion of the air flow in the tube where the air is mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D47/30
CPCD03D47/3013
Inventor 牧野洋一高桥友幸户田元章
Owner TOYOTA IND CORP