JP3079723B2 - Control method of defective weft processing method in shuttleless loom and control device of defective weft processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defective weft processing method and apparatus for cutting and removing a defective weft in which a weft insertion error has occurred in a shuttleless loom. And a control device.

[0002]

2. Description of the Related Art A conventional device disclosed in Japanese Patent Application Laid-Open No. Sho 62-184146 is disclosed in Japanese Patent Application Laid-Open No. 62-184146. The blow nozzle B disposed near the injection port of the main nozzle M directs the guide G disposed in a direction different from the weft insertion direction and injects pressure air to the defective weft Y, so that The defective weft Y has a conical convex part
Upon reaching the transactions means W, transactions means W is after holding at pressure to sandwich the defective weft Y in a state the recess C of the cone moves in the direction of the arrow in the figure, transactions means W rotates The defective weft is cut by the cutter C near the main nozzle M.

[0003]

[0007] However, when the above-described conventional device for holding the defective weft Y by transactions means W,
Since the defective weft Y is cut by the cutter C as it is, the weft Y1 on the main nozzle side and the defective weft Y2 on the fabric side may be entangled due to twisting or fluffing of the weft. In such a case, Defective weft Y2 on fabric side
Therefore, there is a problem that the defective weft Y2 that should be originally removed remains in the woven fabric.

In the conventional apparatus, when a so-called elastic yarn such as a stretch yarn or a core yarn is used for the weft, the buckling at the time of cutting is remarkable due to its elasticity, and the weft comes off from the main nozzle M or the length measurement. There were problems such as disturbance of the storage yarn.

[0005] Therefore, the present inventors, after grasping the defective weft by the attaching means, before cutting with a cutter, produce the defective weft according to the type, twist, fluffing, and properties of the weft.
Reserve to increase or decrease the tension used
The tension acting on the defective weft is adjusted by adjusting the gripping state by controlling the rotation by the preliminary rotation angle .
Focusing on controlling the state of the defective weft by adjusting the force, as a result of repeated research and development, in the treatment of the defective weft, while preventing the cutting of the defective weft on the fabric side, the weft from the main nozzle The present invention has been achieved which achieves the object of preventing the detachment and the disturbance of the length-measuring storage yarn.

[0006]

According to a first aspect of the present invention, a method for controlling a defective weft in a shuttleless loom is provided by a weft detector disposed at an end opposite to a weft insertion side. When a weft insertion error is detected, the blow nozzle located close to the nozzle of the main nozzle directs the weft introduction duct arranged in a direction different from the weft insertion direction to inject pressure air, When the weft reaches the guide has been traded unit in weft guiding duct, after cutting the defective weft from the grips with transactions means a defective weft of a shuttleless loom for removing pull the defective weft by transactions means poor in weft treatment method, after the means transactions defective weft is gripped, direction or reduced to increase the tension applied to the transactions means defective weft according to the type of weft
A tension adjusting step of adjusting the tension acting on the defective weft by controlling the rotation of the preliminary weft in a preparative direction in a smaller direction to adjust the state of the defective weft, and a cutting for cutting the adjusted defective weft Process and take-off means after cutting the defective weft
And pulling out and removing the defective weft by the rotation of .

[0007] In the control device of the defective weft processing device in the shuttleless loom of the present invention (the second invention according to claim 2), the weft detector disposed at the end opposite to the weft insertion side detects a weft insertion error. Then, the blow nozzle arranged close to the nozzle of the main nozzle directs the weft introduction duct arranged in a direction different from the weft insertion direction to inject pressure air,
When defective weft injected from the main nozzle has reached the guidance has been traded unit in weft guiding duct, after cutting the defective weft leading to the main nozzle by the cutting means after gripping by transactions means a defective weft, a defect weft processing apparatus in a shuttleless loom for withdrawal removed by transactions means, after means transactions defective weft is gripped, increasing the tension applied to the defective weft control signal is specified according to the type of weft
Preliminary pre-rotation angle in the direction of decrease or increase
Acting on defective weft by controlling rotation only by degrees
It comprises tension adjusting means for adjusting the tension to adjust the state of the defective weft, and cutting control means for controlling the cutting means such that the defective weft is cut after being adjusted.

[0008]

The method of the defective weft treatment method in shuttleless looms of the first invention of the effects above arrangement, upon gripping transactions means a defective weft, preliminarily pre the transactions means in a direction corresponding to the type of weft
By controlling the rotation only for the pre-rotation angle , defective weft
By adjusting the acting tension, the state of the defective weft is adjusted in advance, that is, when the weft on the main nozzle side and the defective weft on the fabric side are entangled, an appropriate tension is applied or the weft is elastically deformed. In the case of a yarn, the tension acting on the yarn is reduced, and then the defective weft is cut.

[0009] Control device defective weft processing apparatus in shuttleless looms of the second invention having the above structure, when the transactions means grips the faulty weft, the direction specified by the control signal the tension adjusting means in accordance with the type of weft preliminarily preliminary rotation means transactions in
By controlling only angular rotation, it acts on the defective weft
By adjusting the tension, the state of the defective weft is adjusted in advance, that is, if the main nozzle side weft and the fabric side defective weft are entangled, an appropriate tension is applied to separate the two. When the weft is an elastic yarn, the tension acting on the weft is reduced, and then a signal is output from the cutting control means to cut the defective weft by the cutting means.

[0010]

The method of the defective weft treatment method in shuttleless looms of the first invention to achieve the above-described configuration and operation according to the present invention, the corners of transactions means in a direction corresponding to the type of weft preliminarily prerotation
The tension acting on the defective weft is controlled
By adjusting the state of the defective weft in advance,
In other words, when the weft on the main nozzle side and the defective weft on the fabric side are entangled, an appropriate tension is applied to separate them, or when the weft is an elastic yarn, the acting tension is reduced, Since the weft is cut, it is possible to prevent the cutting of the defective weft on the fabric side and to prevent the weft from coming off from the main nozzle due to the buckling and the disturbance of the length measurement storage yarn.

The control device for the defective weft processing device in the shuttleless loom of the second invention having the above-described structure and operation has the same effects as the first invention, and is modified in any way to the mechanical and actuator parts of the defective weft processing device. The above-mentioned effect can be realized only by changing the logic of the controller without adding the above.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a control device for a defective weft processing device in a shuttleless loom according to embodiments of the present invention (first and second inventions) will be described with reference to the drawings.

(First Embodiment) A control device for a defective weft processing device in a shuttleless loom according to a first embodiment applies the present invention to an air jet loom and has a tension adjusting function having a function and means for adjusting the tension. The means and the cutting control means are both realized by computer control and will be described with reference to FIGS.

(Structure of First Embodiment) As shown in FIG. 1, in the control device of the defective weft processing apparatus in the shuttleless loom of the first embodiment, the slay 1 of the air jet loom swings along the machine stand. A main nozzle 2 composed of six nozzles for multicolor (only one is typically shown in the figure) is provided at the left end of the sley 1 in the figure. A reed 3 is provided on the right side of the main nozzle 2 in the drawing, and a concave portion is formed in the reed wing.
The recesses are arranged in a weft insertion direction so as to constitute a weft guide passage and are constituted by a modified reed.

In FIG. 1, a weft yarn Y supplied from a weft length measuring and storing device 4 on the left side of the main nozzle 2 is guided into the main nozzle 2, and the weft yarn Y is supplied with the fluid jetted from the main nozzle 2 in synchronization with the weft insertion timing. The weft Y is inserted into the weft guide passage of the reed 3. The cutter 5 that cuts the weft Y that has been beaten and woven into the woven fabric and that is connected to the main nozzle 2 at each weft insertion is positioned below the side near the main nozzle 2 at a position corresponding to the front of the woven fabric. It is arranged. A weft detector 6 is disposed at the opposite end of the slay 1 on the opposite side of the weft insertion side.
When a weft insertion error is detected, the air cylinder 50 connected to the air tank AT via the electromagnetic valve 51 is closed by disabling the electromagnetic valve 51, the cutter 5 is held in an inactive state, and the cloth Defective weft Y woven into the weave
Is kept connected to the main nozzle 2 without cutting.

A blow nozzle 71 disposed between the main nozzle 2 and the cutter 5 so as to be directed upward from below the main nozzle 2, and an inverted L-shape opened opposite to the injection port of the blow nozzle 71. The suction device 7 includes a mold-type weft introduction duct 72, an air guide 73 disposed to face the other opening of the weft introduction duct 72, and an inverted J-shaped suction duct 74 opened to face the air guide 73. Is configured. The blow nozzle 71 is connected to the air tank A via an electromagnetic valve 75.
The nozzle communicating with T and opening into the suction duct 74 communicates with the air tank AT via an electromagnetic valve 76.

The transactions apparatus 8 with nip rollers to the driving roller 81 and the pressing roller 82 is disposed facing is formed between the weft guiding duct 72 and the air guide 73.
The driving roller 81 is driven by a driving motor 80 controlled by the controller 10, and the pressing roller 82
The air cylinder AT is moved up and down in FIG. 1 by an air cylinder 83 connected to the air tank AT via an electromagnetic valve 84 so as to take an action position pressed against the drive roller 81 and a retracted position separated from the drive roller 81. ing.

A defective weft detector 16 is arranged between the air guide 73 and the suction duct 74, and outputs a signal when the defective weft Y1 is sucked to the suction duct 74.

As shown in FIG. 2, a cutter 9 composed of cutting blades 91 and 92 is disposed immediately above the injection port of the main nozzle 2, and the defective weft Y 1 introduced into the weft introduction duct 72. and it is configured to cut by the cutting blade 91 and 92 prior to pick up by the action of two rollers 81 and 82 transactions device 8. In FIG. 1, a bracket 94 is provided on the sley 1 via a cutter holder 93, and the cutting blades 91 and 92 are locked by the bracket 94. The cutting blade 91 is a fixed blade, the cutting blade 92 is a movable blade, and a spring (not shown) is interposed between them. The defective weft Y1 is cut by being pushed and rotated by an air cylinder 95 connected to an air tank AT via an electromagnetic valve 96 based on a signal.

[0020] The controller 10, those represented by two blocks 10A and 10B which are connected to each other in FIG. 1, a weft yarn detector 6 and defective weft detector 16 as shown in FIG. 3, the electromagnetic valve 51, 75, 76, 8
4, 96, input / output means (I
/ O) 11, a CPU 12, a ROM 13 and a RAM 14, which store in advance a weft processing program and a control program for controlling the state of a defective weft, and a keyboard for inputting in advance the type and nozzle number of a multicolor weft to be introduced into the main nozzle 2. 15 and a display 17 for displaying a control state and a result.

In the ROM 13 in the controller 10, a weft processing program and a defective weft state adjustment program shown in FIG. 4 are stored in advance. In the ROM 13, optimal values of the direction, angle, and rotation speed of the preliminary rotation obtained in advance by experiment are previously stored in order to adjust the state, posture, and tension of the defective weft in accordance with the type and properties of the weft.

(Operation of the First Embodiment) The operation of the first embodiment having the above configuration will be described with reference to the flowchart of FIG. During weft insertion, as shown in FIG. 1, for example, if a loop occurs at the weft end Yb and does not reach the position of the weft detector 6, the weft detector 6 outputs a weft insertion error signal to the input / output means 1.
1 to the control computer 10.

When a weft insertion error signal is input from the weft detector 6, a signal is input from the controller 10 to the valve 51.
And the valve 51 supplies compressed air to the air cylinder 50.
Is stopped, and the cutter 5 is made inoperative. This operation
Without cutting the defective weft Y1
It remains connected to the in-nozzle 2.

[0024] After the weft insertion error signal is input,
And stop at 300 degrees. Then machine
The table is reversed and stopped at 180 degrees, the warp
Is opened.

Further, a signal is input from the controller 10 to the valves 75 and 76, and the valves 75 and 76 supply pressurized air to the blow nozzle 71 and the suction duct 74. A suction flow is formed, and a suction flow is also formed in the suction duct 74 connected via the air guide 73 to suck the defective weft Y1 that has been erroneously inserted.

Next, according to a signal from the controller 10,
Pressurized air is supplied to the air cylinder 83 via the electromagnetic valve 84, and the pressing roller 82 moves downward in FIG. 1 and presses the driving roller 81 via the sucked defective weft Y1, and the driving motor 80 since the drive signal from the controller 10 is output, taking pull in FIG leftward in the defective weft Y1 in FIG.

[0027] At the same time, e Agaido 73 and the suction duct 74
When the defective weft detector 16 disposed between the first and second openings detects the defective weft Y1, a signal is output to the controller 10.

The controller 10 includes a defective weft detector 16
Is input from the keyboard 15, the multi-color nozzle 2 previously input from the keyboard 15 from the ejection signal of the main nozzle and the like.
The type and properties of the weft inserted by the nozzle of the number are determined, the optimal pre-rotation direction, angle and speed corresponding to those are extracted from a map in the ROM 13 and a pre-rotation signal is output to the drive motor 80. I do. The rotation of the drive motor 80 causes the nip roller 8 to apply an appropriate tension to the yarn that is entangled in accordance with the type and properties of the weft, that is, a yarn that is entangled, such as a strongly twisted yarn, a yarn with a lot of fluff, or a yarn with a long fluff ( Preliminary rotation) and in the direction of reverse rotation (reverse rotation) to reverse buckling in the case of strong elastic yarn such as stretch yarn or core yarn to reverse buckling. Adjust at the optimal angle range and optimal speed.

When the above adjustment is completed, the electromagnetic valve 96 is opened by a signal from the controller 10 to supply pressurized air to the air cylinder 95, and the cutting blade 9 which is a movable blade
Then, the defective weft Y1 is cut near the nozzle of the main nozzle 2.

When the defective weft Y1 is cut, the drive motor 80 is driven to take up the woven defective weft Yb by the nip roller 8 and remove it via the suction duct 74. Then, after the error yarn processing, the loom is restarted.

(Effects of the First Embodiment) In the device of the first embodiment having the above configuration and operation, as shown in FIG. 5, the defective weft Y1 is locked to the main nozzle 2 due to twisting of the yarn or fluffing. If the weft that is entangled with the weft fails to be inserted, the nip roller 8
Preliminarily rotates in the forward direction (at the optimum speed only at the optimum angle), for example, up to 20 degrees, and applies an appropriate tension to the defective weft Y1 and the weft locked by the main nozzle 2, thereby eliminating the entanglement between the two. In the state shown in FIG. 1, only the weft locked on the main nozzle 2 is cut by the cutter 9, and the woven defective weft Yb that must be removed.
This has the effect of preventing cutting of

In the first embodiment, when an error occurs when an elastic yarn such as a stretch yarn or a core yarn is inserted into the weft, the nip roller 8 is preliminarily adjusted at the optimum speed at the optimum angle based on the data in the ROM 13. For example, since the tension acting on the defective weft is slowly reduced by reverse rotation to 40 degrees and then cut by the cutter 9, the weft may come off from the main nozzle 2 or the measured length storage yarn may be disturbed. This has the effect of preventing

Further, in the apparatus of the first embodiment, when the type of the weft yarn supplied from the main nozzle 2 to each of the six nozzles for multicolor is input from the keyboard 15 in advance, it is input by the nozzle injection signal and the like. Since the pre-rotation conditions (direction, angle, and rotation speed) of the pre-rotation of each yarn are determined based on the optimal data obtained by experiments stored in the ROM 13 in advance, the optimal pre-rotation and the state of the defective weft according to the weft are performed. Is effected.

In the apparatus of the first embodiment, the control device is constituted by a personal computer, and the content of the control can be determined by the control program, so that it can be easily changed as necessary.
It has the effect of being flexible. For example, in the case where a new weft composed of a high twist yarn and an elastic yarn is newly used, by inputting various data of the new weft into the ROM 13, a composite preliminary rotation is realized. It can respond flexibly to new wefts.

The above-described embodiments are shown by way of example for the purpose of explanation, and the present invention is not limited to these embodiments, and can be modified and added without departing from the spirit of the appended claims. It is.

In the above embodiment, the valve 51 and the valves 75 and 76 are closed and opened after stopping and reversing the machine. However, the valves are closed and opened simultaneously with stopping and reversing the machine. Alternatively, the valve may be closed and opened prior to stopping and reversing the machine.

In the above embodiment, the control device is constituted by a personal computer. However, the control device may be constituted by a hardware circuit having a similar function.

In the above embodiment, an example of a multi-color loom has been described. However, it is of course possible to apply the present invention to a single-color loom having a single main nozzle. An embodiment in which the state of the defective weft is controlled by controlling the preliminary rotation in the same manner according to the type and properties of the weft can be naturally adopted.

[Brief description of the drawings]

FIG. 1 is a front view showing an apparatus according to a first embodiment.

FIG. 2 is a partially enlarged front view of the first embodiment device.

FIG. 3 is a system block diagram of the first embodiment device.

FIG. 4 is a flowchart illustrating a control program of the first embodiment.

FIG. 5 is an explanatory view illustrating the entanglement of a defective weft in the device of the first embodiment.

FIG. 6 is a partially cutaway front view of a conventional device.

[Explanation of symbols]

1 Sleigh 2 main nozzle 3 reed 4 weft measuring-and-storing device 5 Cutter 6 weft detector 7 suction device 8 transactions device (nip rollers) 9 Cutter 10 controller 71 blow nozzle 72 weft guiding duct 73 guide duct 74 the suction duct 80 a drive motor 81 Drive roller 82 Press roller 91 Fixed blade 92 Movable blade

Claims (2)

(57) [Claims] 1. A weft detector disposed at an end opposite to a weft insertion side.
If a weft insertion error is detected, the main nozzle
Blow nozzle arranged close to the weft insertion direction
Pressure air to the weft introduction duct
Inject the defective weftButGuided into the weft introduction ductIshandPull
Means of takingToWhen it reachesPull bad weftAfter grasping with
After cutting the defective weft,PullBy means of takingBad weftpull
In the method of treating a defective weft of a shuttleless loom to pull out and remove,PullGripping meansrear,Depending on the type of wefthand
PullHow to takeThere is a tendency to increase the tension acting on the defective weft
Or decreasePreliminaryOnly the angle of preliminary rotationRotation system
By controllingAdjust the tension acting on the defective weft
handAdjust the state of the defective wefttensionAn adjusting process, and a cutting process for cutting the adjusted defective weft., After cutting the defective weft, pull the defective weft by rotating the take-up means.
A process of punching and removing Failure in shuttleless loom consisting of
Control method of yarn processing method. 2. When the weft detector disposed at the opposite end of the weft insertion side detects a weft insertion error, the blow nozzle disposed close to the nozzle of the main nozzle moves the blow nozzle in a direction different from the weft insertion direction. directed to disposed a weft guiding duct by injecting pressurized air, the defective weft injected from the main nozzle has reached the guidance has been traded unit in weft guiding duct, transactions defective weft means by after having cut the defective weft leading to the main nozzle by the cutting means from the grips, the defective weft processing apparatus in a shuttleless loom for withdrawal removed by transactions means, after means transactions defective weft is gripped, the weft Increase the tension acting on the defective weft specified by the control signal according to the type
Preliminary pre-rotation angle in direction or decreasing direction
Only the tension acting on the defective weft by rotating control
A control device for a defective weft processing device in a shuttleless loom, comprising: tension adjusting means for adjusting the state of a defective weft by adjusting the tension; and cutting control means for controlling the cutting means so that the defective weft is cut after being adjusted.