JPS58208445A - Weft yarn detecting apparatus of 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 relates to an improvement of a weft yarn detection device for detecting the presence or absence of a weft yarn to be inserted in a water shot area machine.

Conventionally, this H-weft detection device has been used, for example, in the
There is one disclosed in Publication No.-46189. At the station, a photoelectric weft detector with a light emitting part and a light receiving part facing each other is installed near the cloth edge outer opening where the inserted weft end reaches approximately 1", and this detector VC A fork rod is provided at the front of the opposing reed to push the weft end, and when the reed is struck, the rc
The end of the culm thread is pushed by a fork rod that moves with the reed, and the light is emitted & +
The presence or absence of weft yarns was detected by passing the optical path between S and the light receiving section.

However, in such conventional devices, the optical path between the light emitting part and the light receiving part was empty, so in the case of the water jet 2M machine, the water jetted from the weft inserting water jet nozzle was Water scatters in the form of droplets, enters the optical path between the transmitter and receiver, and adheres to their surfaces, which may diffuse the light and cause false detection. Ta.

In addition, as shown in %Kokai No. 51-139958,
The gap between the active and light receiving parts is set to 2. Below Osu+, water is introduced between the light emitting and light receiving parts due to its surface tension, thereby preventing erroneous detection of weft threads.

However, this device does not have a water supply device, and the water splashed from the nozzle and the water contained in the wefts are irradiated between the projecting and receiving parts by the surface tension, so sometimes the projecting and receiving parts Water does not accumulate between the light-receiving parts, and weft detection is often carried out in the absence of water, which can sometimes result in erroneous detection of the weft. In addition, with this product, if the glue or thread waste mixed in the spray water enters the water between the projecting and receiving parts, it will emit an oil whistle, so the M agent or thread waste may cause false detection. I scored very few points.

The present invention has been made for the purpose of overlaying such a conventional interpolation point and solving this problem. By filling the optical path with water while emitting V, the state of the optical path is maintained constant, and the slippage of mixed glue and thread waste is prevented, thereby preventing V4 detection. It is.

Hereinafter, the present invention will be explained based on the following embodiments.

1 to 3 show a first embodiment of the present invention.

In the figure, IFi, the warp, 2 is the front, 3 is the woven fabric, 4 is the water injection nozzle for weft insertion, 5 is the woven yarn, 6 is the cotton yarn 5 inserted by the water injection nozzle 4 for the hood insertion. On the other side, there is Ruru, who plays the sword. 7Fi is a yarn end treatment system that captures the ends of the weft yarns 5; 8 is a spindle for false twisting of the yarn end treatment system 7;

Here, a weft detector 10 is placed between the warp yarns 1 and the yarn end treatment system 1, located slightly forward of the front edge 2, and lined up with the heat cutter 9.
is provided.

This weft detector 10 detects a weft thread section 11, which will be described later, on a reed 6.
Attach bracket 13 to temple par 12 while facing toward ml.
has been constant through. Further, on the front side of the reed 6 facing the weft detector 10, a fork rod 14 formed slightly wider than the width of the weft detector 10 is attached to the upper frame of the reed 6.
As the reed 6 moves forward, the fork rod 14 moves to carry the inserted weft 5 end into the kJA yarn insertion section 11 of the weft detector 10. .

- When the system detector 10 is completely read based on FIG. vdAs is provided for a certain period of time and is fixed to the bracket 13 with bolts 21 together with a cover 20 which will be described later. 11 is formed.

The upper member 16 has a recessed portion on the upper surface side to form a water tank 22, and a water supply port 23 that communicates the water tank 22 with the gap S side. Further, a plate-shaped cover 20 is attached to the upper surface side of the upper member 16 to cover an aquarium 22, and this cover 20 has a water supply connected to a water supply source (not shown) that supplies water to the aquarium 22. A supply pipe 24 is attached via a joint 25 and a light emitting optical fiber 26 is fixed thereto. This optical fiber 26 is passed through the water m22 and inserted into the water supply port 23, and the light projecting portion 26m at the tip is positioned within 2°3 of the water supply port, and then rotated to a distance 111s.

On the other hand, in the lower member 17, a drainage space 2T is formed by having a concave portion in the lower member 17. It is formed at a position opposite to the water supply port 23 of
Light receiving optical fiber 29 is 4J1 water space 2T
It is inserted into the water E128 from υ and the light receiving part 29 at its tip
& is placed in the water hole 28 at a position 1a, so as to face the light emitting fm 26&.

In addition, on the lower surface of the lower member 17, both of the tip portions (11tl) are bent into a U-shape, and an axis fA s30 is formed at both 111 parts.
The hook plate 30 on which a dogleg-shaped H yarn locking part 30b is formed is fixed by a pole 30e, and the weft 5 with a gap SK from the weft crosspiece part 11 is attached to the H yarn locking part 30.
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Here, water supply pipe 24, water 4v! 122, water supply port 2
6a and the tJF water inlet 29b constitute a water supply device 31.

The water supplied from the water supply source to the water tank 22 via the water supply pipe 24 flows from around the light projecting optical fiber 26 of the water supply port 23 to the drain port 28', and then flows into the drain hole 28'. It will be released from Jul 27th. Here, '#JP water space 2711 lower member 1T l+
+1 lil, and a sufficient gap &1 is provided between both sides of the hook plate 30, so that water can flow out through this gap. The light emitting and light receiving optical fibers (bars 26 and 29 are made by bundling a plurality of optical fibers and covering the outer periphery with gold), respectively serve as a light emitter (for example, a lamp) and a light receiver (for example, not shown). is connected to the phototransistor).

Next, when we look at the action of the weft detector 1o of this type, we can see that the weft 5 is inserted into the warp-ro section by the weft insertion injection nozzle 4.
is inserted, and in the following reed beating process, the fork rod 14 moves toward the weaving area 2 together with the reed 6, and the fork rod 14
The end portion of the weft yarn 5 is conveyed to the weft input section 11 of the weft yarn detector 10.

Then, the f4 thread 5 passes through the thread S and heads towards the center of the eyelid, returning under its own tension when the reed 6 retreats.
0 b VC locked. Here, the weft 5 is 1
Light passing between the light emitting and receiving sections 26" and 29' except for K""
Weft familiarization is performed by passing through these optical paths. Thereafter, the ends of the weft yarns 5 are cut by a heat cutter 9, and are discarded together with the yarn ends T.

On the other hand, a water supply vibe 24 from a water supply device (not shown),
Water supply supplied via water 4vI22, light projector 2610
From the water supply port 23 of M1 song through the gap S to the drain port 2BVC
After flowing, from the drainage space 27 to the outside? 41. put out Here, the water flowing out from the water supply port 23 to the space IIs becomes a drum-shaped water column due to its surface tension, so the light emitting/receiving part 26
The optical path between m and 29a is filled with the water. Therefore, the scattered water droplets, glue, and thread waste will be removed from the light emitting/receiving section 26m.
, 29a, the state of the optical path is unstable, and even if it does enter, the water on the surface of the water column causes it to flow into the drain port 28 along with the water.
Since there is no accumulation, #1 detection can be prevented.

In addition, since the water supplied between the light emitting/receiving parts 26m and 29a is sent from the water supply source via the water 4122,
The water on t1 between the light receiving parts 26m and 29a does not leak.

Figure 4 shows a second example of non-invention, in this case Nil
mc: tip t of the lower member 17 of the weft thread comb 10 in the first embodiment
Light projecting unit 2 installed at the water supply port 23 of the upper phase 16 in the M1 part
The light receiving part 29m is fixed opposite to the light receiving part 29m, and a conical slope part 32 is formed around the chest circumference of the light receiving part 29m.
2 is made to flow for a while from the viscous water port 23 and then flow along the slope 32 around the light receiving part 259a.

In this embodiment as well, four types of effects can be obtained as in the first embodiment.

Figures 5 and 6. 31st invention of the company! An example is shown.

The weft yarn detector 10' of this embodiment has a lower member 170 extending upward from the front side thereof to form a mounting portion 33, and this mounting portion 33 is fixed to the temple parer 12. In addition, the lower member 17 forms the water Wj34 and the water tank 34 for fish and fish.
It has a sloped part 17m with a threaded end surface peeled inward by #4, and a light receiving part 29m is mounted on the bottom wall of the sloped part 17m via a cylindrical mounting member 35't. In addition, a water supply vibe 24 from a water supply source (not shown) is connected to the side wall of the water [34], and while constantly supplying water into the water fII 34, the supplied water is transferred from the upper end surface of the water tank 34 to the outside. This is to ensure that it flows out.

On the other hand, the upper phase 16 disposed above the water N134 has an #A body part 18m having an inclination opposite to the #34 inclined parts 17m, and a protrusion 36 connected thereto. is formed, and the inner surface of the protruding portion 36 is connected to the weft locking portion 361
At the same time, a light projecting part 26a is fixed to the protruding part 36, and is opposed to the light receiving part 29m on the water tank 34 side. Here, the tip end surface of the protrusion 36 faces into the water tank 34.

According to the weft detector 1G' having such a configuration, the weft 5 that has been transferred to the weft introduction section 11 by the fork rod has an inclination of the weft section 16.
Water tank 34 filled with water while being guided by m, 171
The light transmitting/receiving light 8IS 26m and 29a pass through the optical path and are locked by the weft locking part 36m.

At this time, since the water type 34 is filled with water, the weft yarn 5 can be detected in a stable state. Further, even if thread waste or glue enters the water tank 34, it will not remain in the water tank because it will flow out together with the water that is constantly flowing out from the water h1134.

7 and 8 show a fourth embodiment of the present invention.

In this 'Ak example, a trapezoidal upper member 16 and a lower member 1T, each having sloped parts 16m and 17& with opposite inclinations facing the tip thereof, are connected to a bolt 21 via a spacer 18 for a fixed period of -8. At the same time, the upper member 16 and the lower members 1T and 1k are fixed with their light emitting/receiving parts 26m and 29& facing each other. In addition, a water supply pipe 24 connected to a water supply source (not shown) is connected to a joint 25 in the upper member 16.
By constantly supplying water to the gap s, the optical path between the emitting and receiving parts 26m and 29m is filled with water. Incidentally, numeral 37 is a hook plate whose tip portion is bent on both sides into a bifurcated shape, and a tilted portion 3T1 and a dogleg-shaped weft locking portion 37b are formed on both sides of the hook plate. Also,
At the tip of the lower member 1T, there is a convex portion 38 that is continuous with the Tsukuda portion 17m.
1 so that the water in the gap S is constantly discharged to the outside, so that the space 11ls is filled with water.

In the weft detector 10' of this embodiment, the water is constantly supplied into the gap s through the water supply pipe 24t, and the water filling the gap S flows between the light emitting and receiving parts 26m and 29m. Since it flows out to the outside, the thread waste and glue do not flow outside together with the water that flows out and cause surface quality.

Further, the fifth and sixth embodiments shown in FIGS. 9 and 10 are modified versions of the third and fourth embodiments, respectively. The optical fiber 39 for projection and reception is used, and the optical fiber 39 for projection and reception is formed with a projection and reception part on the end face thereof, and the projection and reception part is made to face the bottom surface of the water tank 34 or the bottom surface of the lower member 1T as a reflecting mirror. This is a reflection type weft detector. Even in the weft detector having such a configuration, it is possible to obtain the same effects as in the above-mentioned implementation.

As explained above, the present invention provides a weft thread ← throwing and
By supplying and discharging water onto the optical path between the light receiving sections, the optical path is filled with water, creating a hump that maintains a constant state of the optical path between these sections and the light receiving section.
+ Glue also does not run on the surface, making it possible to prevent one-time detection.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a weft detecting device showing a first embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a sectional view of the main parts of the same, and Fig. 4 is a second embodiment of the present invention. Main part sectional view showing an example, No. 5
6 is a cross-sectional view of main parts showing a third embodiment of the present invention, FIG. 6 is a VT-VT arrow diagram of FIG. 5, and FIG. Figure 8 is a view from the ■-■ arrow in Figure 7.
FIGS. 9 and 10 are sectional views of essential parts showing the fifth and M6 embodiments of the present invention, respectively. 1...Warp 5...Weft 6 River reed 10,
10'. 10'...Weft detector 14...Fork rod
16... Upper member 1T... Lower member 22, 3
4 Water tank 23... Water supply port 24... Water supply pipe 26... Optical fiber for light projection 2
6m...Light emitter 28...U water outlet 29...
・Optical fiber for light reception 29t...Light receiving section
31...Water supply device clock Applicant Nissa Jidosha Co., Ltd.

Claims (1)

[Claims] In a weft thread detection device for a water jet carpet machine, which detects all weft threads (5) in the reeding process on the optical path between the light projecting part (2t3a) and the light receiving part (29a), the light projecting part (2
A water supply device (2sa) that supplies water to the optical path between the optical path (Sa) and the light receiving section (2sa), and adjusts the brightness of the water while supplying water to the optical path.
31) A weft detection device for a water jet loom, which is patented as having the following.