KR20100119600A - Weft of jet loom weft insertion - Google Patents

Abstract

PURPOSE: A jet loom weft insertion device is provided to increase a force for pushing a weft into a hook unit, thereby being certainly hooked in the hook unit. CONSTITUTION: A jet loom weft insertion device hooks a vibration plate, which can vibrate in the same direction as a body needle direction, under the top of a weaving line of a body(3) opposite to a nozzle so that the jet loom weft insertion device vibrates toward the weaving line by inertia of body needle movement. A loom includes an arm(4). The loom includes a weight(23) in the other end of an arm support unit to adjust weight based on a need.

Description

Weft insertion device for jet looms

TECHNICAL FIELD This invention relates to the improvement of the weft inlet apparatus of a jet loom.

Jet looms, such as water jets and air jets, inject water or air fluid from the nozzles along the inclined side opened by the opening motion, and float the wefts measured by the required amount (length) every time. Arm) which pushes the weft thread inserted from one side of the loom and immediately after insertion into the hook part of the weft detection device and the hook part which hangs the weft thread, and the forward movement end of this arm. The stopper which regulates the pressure of the arm repulses the arm in the retreat direction, and retracts the weft from the weft inlet to the body side when the weft is inserted. Weaving the fabric by repeating the body needle action to push.

In order to detect the insertion or miss (err) of the weft thread under the above conditions, a weft detection device is provided on the opposite side of the nozzle, and the presence of the weft thread is not confirmed by confirming the presence of the weft insertion immediately after the insertion by the device. At that time, the operation of the loom is stopped.

The present invention is to increase the firmness of the weft in the jet loom which can push the weft immediately after insertion of the weft proposed in Japanese Patent Application No. 08-350287 to the weft detection device, etc. to accurately detect the weft. The present invention relates to an improved weft insertion device.

In the conventional weft inserting device, the weft thread is caught by the hook due to the lack of pushing, or the weft thread is cut in the case of a thin thread. Timing passing through the detection unit and a timing sensor of the crank axis are performed in combination, resulting in inadequate movement of the arm (err, miss).

According to the present invention, when the arm pushes the weft end in order to achieve the above object, a weight is applied to the tip portion of the arm to change the inertia force according to the thickness of the weft. I made it to change the size.

Moreover, although the pushing distance was 6-7 mm conventionally, weight installation is also needed in order to shift the position of a stopper, and to raise the inertia force to push more than that.

As a result, the tip portion of the thread drawn from the side of the weft thread tends to have a low tension. As the amount of the pushing force increases, the tension of the tip portion increases and the entire width becomes a constant tension.

In the present invention, when the weft detecting device detects the weft, when the weft passes through the detection unit, it is combined with the signal of the signal generator set once in one rotation of the crank axis, and in this case, the free arm As a result, the timing at which the weft passes through the insertion detection unit may be shifted.

Nevertheless, the sensor detects the passage of the weft of the arm by the movement of the arm and combines the signal of the signal generator of the crankshaft and the signal of the arm. It is meant to be built.

The hook portion of the weft detector immediately after insertion increases the force to push the hook portion of the weft detector and the hook portion to hold the weft, thereby making it possible to secure the hook portion and increase the weft force.

The weft detection of the jet loom is accurate, and it is possible to provide a weft pushing device that can reduce the notice that the loom is stopped for no reason.

Figure 1a is a schematic plan view of the main portion of the weft insertion portion of the jet loom showing the first embodiment of the present invention, Figure 1b is a schematic side view of the body needle at the time

Fig. 2A is a schematic plan view of the loom on the installation side of the weft detection device, and Fig. 2B is a schematic front view showing the relationship between the weft detection device and the arm 4, in which 1 is an inclination, 2 is a weft yarn, and 3 is a body. . 4 is an arm, 5 is a stopper, 6 is a spring, 23 is a WEIGHT, and 7 is a weft detector.

The inclination 1 is drawn out from the inclination beam 8, and it is BACK (REST R / 0 (9), needle 10, heald 11, 12, pressed beam 13, winding R). / 0 ((14), past the GUIDE R / 0 (15) and wound onto the CLOTH BEAM 16. The heald 11, 12 is connected to the fiber loom opening mechanism starting from the TAPPET CAM. (Not shown), each time the inclination 1 is moved up and down to each other, which is the insertion of the weft yarn 2, the opening is formed by the insertion path of the weft yarn 2, that is, the inlet path.

Although the insertion mechanism of the weft yarn 2 is omitted in the drawing, a nozzle (NOZZLE-not shown) is provided on one side of the insertion path of the weft yarn 2 so that the weft yarn is loaded on the fluid injected from the nozzle and pre-measured every time. The weft (2) is carried toward the opposite side and is blown up.

On the opposite side of the nozzle, a weft detector 7 and corresponding arm 4 are installed, and the cut scissors 17 cut out of the width of the fabric horizontally and horizontally, and the weft edge after cutting. Catch code 18 is installed.

The weft detector 7 has a two-stage shape as shown in FIG. 1 and is provided with a light emitter and a light receiver for confirming the existence of the weft yarn 2 above and below the inside that are opened toward the body 3. On the other hand, a hook portion 7a is installed to hold the inserted weft yarn 2 in the inner lower portion thereof, and stops the operation of the loom when the weft yarn 2 is not confirmed.

In the case of water jet looms, the transmitter and receiver are installed at separate locations so that the water receiver and the receiver do not get wet. The lens connected to is placed in the opposite state.

The body 3 is driven by the crank (not shown) of the body needle exercise mechanism which cooperates with an opening mechanism, and performs body needle movement in the shape shown in FIG.

The arm 4 is supported on the front surface of the body 3, i.e., on the upper side of the weaving line 19, by swinging in the same direction as the body needle direction through the drive 4a. In addition, a stopper 5 is provided on the lower front surface of the body 3 to restrict the moving end in the front direction (forward) of the arm 4.

In addition, to increase the inertia force of the arm (4), it is better to make the arm (4) itself heavy, but weighting is not good because it is obstructed by weft insertion because the arm (4) becomes large.

Therefore, the inertia force can be efficiently increased by installing the weight on the tip of the arm.

The iron piece 21 is mounted on one part of the arm 4, and the detector 22 and the weft thread which are fixed to the loom frame and the weft thread are in the position of the detection part. The combination of the set connection signal and the synchronization signal is performed.

The first embodiment of the present invention has the above configuration and the operation will be briefly described next.

First, water or air, such as water or air, is jetted from the nozzle nozzle along the space between the inclined (1) rows opened and closed by the opening movement. ) Wefts (2) lengthwise measured by the injection fluid from the injection of one side of the loom, and then weaving the wefts (2) by the body (3) to the CLOTH FELL (19) by body needle movement By repeating the pushing operation to make a fabric (20) is rolled up on a cloth (cloth beam). This is called weaving.

When the weft yarn 2 is inserted, the arm 4 is retracted from the insertion path of the weft yarn 2 to the body 3 side. Without interfering with the insertion of the weft yarn 2, the weft yarn 2 immediately after the insertion is moved toward the weft detector 7 and moved to the straight line 19 side faster than the end tail and pushed. That is, in the present invention, since the body needle movement is performed by the crank mechanism, the moving speed of the body 3 is zero at one end of the reciprocating stroke, but gradually increases to the center of the stroke and moves from the center to the other end when moving toward the other end. At the point where the body 3 moves toward the weaving line 19 side, the body 3 gradually increases to the center of the moving stroke so that the body 3 gradually moves to the weaving line 19 side. By moving the inertia force of the arm 4 generated in the first half during the movement, the arm 4 is moved forward ahead of the body 3.

The stopper 5 regulates the moving end (end) forward of the arm 4 by the inertia force.

Fig. 3A is a schematic side view of the main part when weft insertion of the JET loom is shown, and Fig. 3B is a schematic side view of the body needle, and supports the arm 4 to the body 3. The case of standing (standing) from the part is shown, and since the other structure and operation are the same as that of 1st Embodiment, the same code | symbol is attached | subjected to the same member, and the description is abbreviate | omitted.

Figure 1a is a schematic view of the main part at the time of weft insertion of the JET loom showing the first embodiment of the present invention

Figure 1b is a schematic side view of the body needle according to Figure 1a

Fig. 2A is a schematic plan view of the loom at the installation side of the weft detector;

Figure 2b is a schematic front view showing the relationship between the weft detector and the arm

2C is a side view of the weft through the detection section

FIG. 2D is a top view of FIG. 2C

Figure 3a is a schematic view of the main part when weft insertion of the JET loom showing the second embodiment of the present invention

3B is a schematic side view of the body needle according to FIG. 3A

*** Description of the symbols for the main parts of the drawings ***

1: slope

2: weft

3: body

4: arm

6: spring

7: weft detector

22: sensor

23: WEIGHT

21: iron pieces or magnets

Claims (2)

In the jet loom, the inertia of the body needle movement is suspended by hanging a shaking plate (pin) which is swingable in the same direction as the body needle direction on the upper part in front of the woven line side of the body opposite to the nozzle. In the weaving machine which swings ahead of the body to the weaving line side and pushes the weft immediately after insertion toward the hook portion of the detection device and the hook portion for the weft catch, the weight is placed on the other end of the arm support. Weft weaving device of the jet loom, characterized in that for adjusting the weight as needed. The weft weaving device of a jet loom of claim 1, further comprising a sensor for detecting a movement position of the arm.

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