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Water injector in Hydraulic loom

A technology of water jet device and water jet loom, which is applied in looms, textiles, textiles and papermaking, etc., and can solve problems such as changes in spring constants, large labor costs for coil springs, and complicated structures.

Active Publication Date: 2016-02-03
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The method of changing the spring constant generally used in the past required the preparation of multiple coil springs with different spring constants, requiring storage space for spare coil springs, and also required a lot of labor for the storage and management of the coil springs.
[0009] Patent Document 1 requires installation of a large-scale spring constant change device in the pressurized water supply device, which complicates the structure and requires a lot of labor in the work of changing the spring constant
In addition, since the tension coil spring is configured to be held by screwing with the threaded engagement portion formed on the head of the bolt constituting the spring constant changing device, there is a possibility that the spring constant changing device may Due to the load during the operation of the water jet loom, the combination of the tension coil spring and the threaded joint is loosened, and the position of the threaded joint is deviated, so that the set spring constant changes.

Method used

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  • Water injector in Hydraulic loom
  • Water injector in Hydraulic loom
  • Water injector in Hydraulic loom

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ）

[0027] according to Figure 1~Figure 5 The first embodiment will be described. figure 1 Shows the water jet device 1 in the water jet loom. The pump 2 constituting a part of the water spray device 1 is connected to the water tank 3 through the water passage 4 and connected to the weft insertion nozzle 5 through the water passage 6 . A check valve 7 is arranged on the inlet side of the pump 2 connected to the water passage 4 , and a check valve 8 is arranged on the outlet side of the pump 2 connected to the water passage 6 . A pressure cylinder 11 in which a plunger 10 of the pump 2 slides is connected to the flow path 9 in a crossing direction.

[0028] On the other hand, a three-pronged arm 16 composed of a driving arm 13 , a plunger arm 14 , and an attachment arm 15 is fixed to a rotating shaft 12 disposed near the pump 2 . The trifurcated arm 16 is integrally rotatable in the clockwise direction and the counterclockwise direction around the axis of the rotating shaft 12 ...

no. 2 Embodiment approach ）

[0065] Image 6 The second embodiment is shown, and the same reference numerals are assigned to the same configurations as those of the first embodiment, and detailed description thereof will be omitted. In the second embodiment, the mounting surface 32A of the mounting arm 32 of the coil spring 23 is formed as a flat surface. Scales S1 to S4 are formed on the mounting arm 32 similarly to the first embodiment. exist Image 6 Among them, the holder 24 holding one end of the coil spring 23 is attached to the position of the scale S3 of the mounting arm 32 .

[0066] The rod 28 holding the other end of the coil spring 23 is fixed to a bracket 33 fixed to a frame (not shown) via a fixing nut 30 and a stopper nut 31 . The bracket 33 is formed of a flat plate and is arranged parallel to the mounting arm 32 . In addition, a long hole 34 is perforated in the bracket 33 , and the rod 28 passes through the long hole 34 and is fixed by nuts 30 , 31 .

[0067]The attachment position ...

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PUM

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Abstract

Without changing the spring constant of a helical spring, the pressure gradient for pressure water can be changed. A driving arm (13), a plunger arm (14) and an installation arm (15) of the helical spring (23) are fixed on a rotation axis (12). A maintenance piece (24) at one end is used for maintaining the helical spring (23) and is fixed on the installation arm (15) by means of a bolt (25). A bar (28) at the other end is always fixed on a bracket (29) by means of nuts (30, 31). The helical spring (23) can changed to each installation position for the scales (S1-S4) of the installation arm (15) by loosening the bolt (25). The length (L3) to the scale (S3), and each length to the scales (S1, S2, S4) is different so that the variation of the force applied to a plunger (10) and the pressure gradient of the pressure water change according to the installation position of the helical spring (23). Therefore, without changing the spring constant, the pressure gradient for the pressure water supplied to a wefting insertion nozzle (5) can be changed.

Description

technical field [0001] The present invention relates to a water spray device in a water jet loom provided with a pump for supplying pressurized water to a weft insertion nozzle. Background technique [0002] In the water-jet loom, depending on the type of weft yarn, the weft yarn in the weft insertion (weft insertion れ) is distinguished as well-adapted or poorly adapted to the pressurized water. The weft yarn that is difficult to adapt to the pressurized water is difficult to maintain in the pressurized water, and it is easy to cause delays in weft insertion. Therefore, it is necessary to reduce the pressure gradient of the pressurized water in the weft insertion and continue the high pressure state of the pressurized water. Weft insertion. Conversely, weft yarns that are easy to adapt to pressurized water are easy to maintain in pressurized water, so under the condition of small pressure gradient, it is easy to cause weft yarn damage, so it is necessary to increase the pre...

Claims

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Application Information

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IPC IPC(8): D03D47/32
Inventor 岛崎春雄
Owner TOYOTA IND CORP