JPS60199951A - Jet watr scattering prevention apparatus in water jet loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention prevents the warp and other parts of the weft from getting wet by spreading the jet water jetted from the weft inserting nozzle in the water jet loom to convey the weft threads, and also prevents some of the jet water from getting wet. This invention relates to a jet water diffusion prevention device that collects and reuses parts.

In general, a water jet loom weft insertion device uses a plunger pump 2 attached to the side of the frame from a constant water tank 1 installed below the side of the frame of the loom, as shown in Figure 1, which is necessary for one weft insertion. The water is sucked in, pressurized, and sent under pressure to the weft inserting nozzle 3 installed near the warp opening at the top of the frame. Pressurized water is jetted from the nozzle, and the jetted water inserts the weft into the weft thread. The threads Y are made to fly into the openings of the warp threads 4X.

By the way, it is well known that the jet water jetted from the weft insertion nozzle 3 flies in a focused state for a distance after jetting, but after that a so-called explosion phenomenon occurs.

This phenomenon usually occurs 5 to 10 cm from the weft insertion nozzle 3 after jetting.
As shown in the figure, the jetted water at a distance generates a group of round, dumpling-shaped masses of water.The reasons for this phenomenon are: First, when the jetted water starts flying at high speed, it forms a wall of air. Second, when the jet water is jetted, the jet water remaining in the pipe from the plunger pump 2 to the weft insertion nozzle 3 and inside the weft insertion nozzle 3 from the previous jet is first The water is injected into the weft insertion nozzle 3 at a relatively slow flow rate.
It is said that the explosion occurs when the jetted water that was jetted earlier collides with the jetted water that was jetted later at a point a little distance from the point where the jetted water is injected into the warp opening. After this phenomenon occurred, the jetted water spread rapidly, causing it to violently wet the opened upper and lower warp threads and other parts.Recently, in order to prevent this explosive phenomenon, research has been carried out on jetting methods for jetting water. Although improvements are being made, since the jet water is released into the air at high speed, it is difficult to avoid dispersion after the jet water is jetted from the weft insertion nozzle 3, although there are differences in degree. Therefore, there is no difference in the fact that the warp threads and other parts are significantly wetted.As shown in FIG. Then, a fixed cover 6 is attached to the top of the warp group.
An open/close cover 7 is provided which can be opened and closed so that the beating part can be accessed, and a fixed cover 8 is provided below the warp group.

However, with such conventional spray water diffusion prevention devices, the spray water is allowed to spread almost freely1, and the diffuse water simply scatters to the outside of the loom, wets the factory floor, and worsens the factory environment. Since the warp threads are wetted, not only can this lead to poor shedding and warp thread breakage, but also the movement of the rondo for beating the reed and the movement of the healds, making it impossible to provide a sufficient diffusion prevention cover. As a result, there were problems such as the generation of rust due to the wetting of various parts of the loom itself, and a decrease in the durability of bearings and other parts.

This invention was made by focusing on such conventional problems, and it is necessary to convey the weft yarn Y to a position before the water jetted from the weft inserting nozzle 3 enters the opening of the warp yarn X. A diffusion preventer is installed to capture unnecessary sprayed water,
The purpose of this invention is to solve the above problem by preventing the sprayed water from spreading toward the warp opening.

Embodiments of the present invention will be described below with reference to the drawings.

3 and 4 are diagrams showing a first embodiment of the present invention.0 Weft insertion nozzle 3 is provided on the side of the opening for warp yarns X, which is similar to the conventional one, but the weft insertion nozzle 3 is moved back to a position farther away from the warp opening than in the past, and a diffusion preventer 9 is provided between the warp opening and the weft insertion nozzle 3. The diffusion preventer 9 has a funnel-shaped center hole 91 that allows the weft yarn Y provided in the center and a part of the jet water around it to pass through, and a funnel-shaped center hole 91 that traps the jet water outside the center hole 91. It consists of a shallow cylindrical water receiving part 92 which is open on the side of the weft insertion nozzle 3, and a recessed part is provided at the lower part of the diffusion preventer 9 to collect the captured jet water, and the jet water is collected at the lower end of the concave part. Hole 9
There are 3.

This hole 93 is connected to a water pipe 10 connected to the constant water tank 1.

Flea 1) 1 is also no 7+re, Tsutoh Detective λ pattern Seb Aoichi (0h
When the jet is pulled, an explosion phenomenon or significant diffusion of the jet water occurs, but since the weft inserting nozzle 3 is provided at a position farther from the warp opening than in the past, the explosion phenomenon or significant diffusion of the jet water does not occur. This will occur before entering the opening. However, since the diffusion preventer 9 is provided in that area, some of the jetted water and the weft around the yarn that transports the weft pass through the center hole 91 and fly into the warp opening, but other than that, Much of the diffused water is captured by the diffusion preventer 9, collected in the hole 93 below the diffusion preventer 9, and returned to the constant water tank 1 via the water pipe 10, where it is used again as water for injection.

A second embodiment is shown in FIGS. 5 and 6.

In this embodiment, even after weft insertion is completed by jetting water and weft insertion is completed, the weft threads are removed from the center hole of the diffusion preventer 9 as shown in the figure.
This is a device for performing the next injection after leaving it in a state where it is not pulled out from 1. In the previous example, when the jet water is jetted from the weft insertion nozzle, the weft yarn also flows from the weft insertion nozzle 3 to the diffusion preventer 9.
In order to prevent the weft from colliding with the outer periphery of the center hole 91, it was necessary to make the hole long enough to allow for this, but in this embodiment, there is no need for this, so the center hole 91 has a larger diameter. It is possible to make the hole diameter extremely small, and the effect of preventing diffusion becomes even more remarkable.

Incidentally, on the front surface of the diffusion preventer 9, a splash prevention plate 94 is provided near the jet water inlet of the water receiver 92 to prevent the jet water from colliding with the water receiver 92 and splashing back.

In the example shown in FIGS. 5 and 6, the anti-rebound plate 94 supports a plurality of annular bodies concentrically by a support member 95. This further enhances the diffusion prevention effect.

I have explained above. According to the present invention, a diffusion preventer is provided at a position before the jet water jetted from the weft nozzle enters the warp opening to capture the diffused jet water that is unnecessary for conveying the weft. The captured jet water is circulated into a constant water tank, making it possible to prevent warp shedding failures and warp breakage due to wetting the warp threads that are repeatedly subjected to intense shedding motion, and also to prevent warp thread breakage. It can prevent troubles caused by movement and the vertically moving parts of the healds being exposed to water.
Furthermore, you can save water by recycling the diffused water that was wasted uselessly into a constant water tank.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the state of diffusion of jet water jetted from the weft inserting nozzle, FIG. 2 is a vertical cross-sectional side view showing the conventional diffusion prevention effect on this diffused water, and FIG. A partially longitudinal front view of the embodiment, FIG. 4 is shown in FIG. 3 IV-IV.
5 is a partially longitudinal front view of the second embodiment of the present invention, and FIG. 6 is a diffusion preventer seen in the direction Vl-V1 of FIG.・Fixed water level tank 2...Plunger pump 3...
- Weft inserting nozzle 4... Reed 6... Heald device 6... Diffusion prevention cover 9... Diffusion preventer 1o... Water pipe X... Warp Y... Weft Patent applicant Increase 1 ) Teruo Agent Patent Attorney Katsu Ohno Reiko Dai No Yanosuke 1 figure, almost 2 figures

Claims (1)

[Claims] 1. In a water jet loom in which the jet water jetted from the weft insertion nozzle transports the weft into the warp opening, before the jet water jetted from the weft insertion nozzle enters the warp opening. A jet water diffusion prevention device in a water jet loom, characterized in that a diffusion preventer is provided at a position to capture diffused jet water unnecessary for conveying a weft yarn. 2. The diffusion preventer has a water pipe for sending the captured jet water to a constant water tank.
A jet water diffusion prevention device in a water jet room as described in 2.