JPH0431273Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a jet-type pile loom, and more particularly to a device for controlling the operation of a defective yarn removal device in accordance with the weaving cycle when a weft insertion defect occurs.

Prior Art From the viewpoint of labor saving, a defective yarn removing device is also required for pile looms and the like.

As described in, for example, Japanese Utility Model Application Publication No. 62-41083, the defective yarn removing device pulls out the weft yarn from the weaving front when a weft insertion defect occurs, and automatically sets the loom to a restartable state.

By the way, in pile weaving, for example towel weaving,
Loose picks and fast picks are repeated according to the weaving cycle, of which the fast picks are directly involved in the formation of the pile.
If a weft thread insertion failure occurs in the first pick weft thread and the faulty weft thread is pulled out,
After the pile is formed, the gripping force is lost, causing the pile to fall out. If one row of piles falls out, the towel cloth being woven becomes irreparable, and that part becomes a defective product. However, the weft threads of the other loose picks are not directly involved in gripping the pile, so they can be pulled out as they are.

Purpose of the invention Therefore, the purpose of the present invention is to control the removal operation of the defective yarn removal device in an appropriate state depending on the structure of the pile weave.

Therefore, the present invention focuses on the fact that even in a pile weave, a loose pick weft can be pulled out without any problem.The present invention distinguishes between loose picks and fast picks in the weaving cycle, and is defective only when a weft insertion failure occurs in a loose pick. Start the thread removal device,
The operation of the device is prohibited during other fast picks.

When a weft insertion failure occurs in a first pick, the weaver pulls out the weft thread from that first pick as well as all other weft threads that correspond to loose picks in that weaving cycle, and restarts weaving from the previous weaving cycle. Set it so that

When such control is performed, the defective yarn removing device also operates effectively in the pile loom, so that the defective yarn removal operation can be automated even in loose picks other than fast picks.

Outline of the Invention First, FIG. 1 shows an overview of the main parts of a jet type pile loom 1, a defective yarn removing device 2 attached thereto, and a defective yarn removing operation control device 11 of the present invention.

In this pile loom 1, the weft yarn 3 is inserted into the opening 6 of the warp yarn 5 for the ground and pile by the weft insertion nozzle 4, and then the weft yarn 3 is inserted into the opening 6 of the warp yarn 5 for ground and pile by the weft insertion nozzle 4, and the weft yarn 3 is inserted into the opening 6 of the warp yarn 5 for the ground and pile by the terry motion of the reed 7, that is, by reed beating or sword beating. For example, a pile fabric 8 with a three-width structure as shown in FIG. 2 is obtained. In addition, the complete weft insertion state is detected by the feeler 12 on the arrival side of the weft thread 3. Further, the weft yarn 3 after wefting is cut by a cutter 9 on the wefting side and separated from the woven end of the pile fabric 8.

When a weft insertion failure occurs in the process of weaving such a pile structure, the feeler 12 detects the non-reaching state of the weft thread 3 and sends a weft stop signal to the main controller 10. Therefore, the main controller 10 automatically stops the pile loom 1 without performing the weft insertion in the next weft insertion cycle, and without operating the cutter 9, transfers the defective yarn 3a with the defective weft insertion to the weft insertion nozzle. The pile loom 1 is set to remain connected to the weft thread 3 on the side 4, and the pile loom 1 is reversed to bring out the defective thread 3a.

At this time, the controller 13 of the defective yarn removing device 2
When a startup command is received from the defective yarn removing operation control device 11 of the present invention, the nozzle 14 injects fluid to guide the weft yarn 3 and defective yarn 3a into the defective yarn removing device 2. After this, the defective yarn removing device 2
By pulling the weft thread 3 and the defective thread 3a inside and winding them up, the defective thread 3a is pulled out from the inside of the opening 6.

Structure of the invention And defective yarn removal operation control device 11 of the invention
As shown in FIG. 3, in order to operate the defective yarn removing device 2 only for defective weft insertion of the loose pick L during the weaving cycle, the feeler 12
In addition, a weaving cycle discriminator 15 and an operation command unit 16 are provided. The feeler 12 is directly connected to one end of an AND gate 17 inside the operation command device 16. Further, the sensor 18 of the weaving cycle discriminator 15 is connected to the other input terminal of the AND gate 17 via a knot circuit 19 as well as an indicator lamp 24 in the operation command device 16. and,
This sensor 18 detects the rotational phase of the rotating body 20. Note that this rotating body 20 is fixed to a rotating shaft 21 that rotates once in one weaving cycle, and is attached within a range of 120 degrees with respect to the center angle. and,
The AND gate 17 is connected to the controller 1 on the output side.
It is connected to the input terminal of 3.

Effect of the invention When a weft insertion defect occurs during weaving, the feeler 12 generates a weft stop signal of, for example, "H" level, and sends this to one input terminal of the AND gate 17 in addition to the main controller 10. Send it in.

On the other hand, the sensor 18 of the weaving cycle discriminator 15
corresponds to the rotating body 20, and generates an "H" level signal when the first pick F has a three-width towel weave and is defective in weft insertion. Then, this "H" level signal is transmitted to the not circuit 19.
The signal is inverted by , and is sent to the other input terminal of the AND gate 17 as an "L" level signal. As a result, the AND gate 17 generates an output at the "L" level and does not give an operation command to the controller 13 when the third pick F has a defective weft insertion. Therefore, when a weft insertion defect occurs in the first pick F, the weaver confirms the condition by checking the lighting of the indicator lamp 24, pulls out the defective yarn 3a corresponding to the first pick F, and reverses the pile loom 1. ,
For this weaving cycle, manually pull out the weft thread 3 of the 1st and 2nd pick L,
Sets the state so that it can be restarted from the previous complete weaving cycle.

However, when the sensor 18 does not correspond to the rotating body 20, that is, when it is a loose pick L,
Since it is generating an "L" level signal, the NOT circuit 19 inverts it and sends it to the AND gate 17 as an "H" level signal. At this time, the AND gate 17 receives the "H" level signal from the filler 12 and the "H" level signal from the NOT circuit 19 as input conditions.
A level output is generated and given to the controller 13 as an operation command.

In this way, the controller 13 operates the defective yarn removing device 2 only when the loose pick L has a defective weft insertion.

Other Embodiments of the Invention In the above embodiment, the weaving cycle discriminator 15 discriminates from the rotational phase. However, as shown in FIG.
It can also be constructed by focusing on the movement in the front-back direction and detecting the moving body 22 such as a lever with the sensor 23. When the weaving front is moving backwards, sensor 2 is activated because it is first pick F.
3 generates an "L" level signal, and sets the AND condition of the AND gate 17 to an unfulfilled state without passing through the NOT circuit 19. Therefore, the controller 13 starts the defective yarn removal operation only when a loose pick L is detected. The indicator lamp 24 is controlled by a note circuit 27 and an AND gate 28, and lights up when the first pick is F to notify the inoperative state. Incidentally, even if the reed is based on the terry motion, the re-advance position of the reed may be detected to determine whether it is a fast pick or a loose pick, as in the above embodiment.

By the way, the specific configuration of the defective yarn removing device 2 is as follows.
In addition to the above-mentioned Utility Model Kai No. 62-41083, Utility Model Kai No. 61-
No. 150876, as well as JP 56-27621 and JP 58 Sho 58.
-220856 and JP-A-59-112053 and other known methods may be used.

Effects of the invention In this invention, when a weft insertion defect occurs in a loose pick during the weaving process of pile fabrics, the defective yarn removal device automatically performs the defective yarn removal operation. It can be done accurately. This makes it possible to save labor in the pile loom.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a pile loom, a defective yarn removing device, and a defective yarn removing operation control device of the present invention;
FIG. 2 is an explanatory diagram of the pile (three-width towel) structure, and FIGS. 3 and 4 are block diagrams of the defective yarn removal operation control device of the present invention. 1... Pile loom, 2... Defective thread removal device, 8
... pile fabric, 11 ... defective yarn removal operation control device, 12 ... filler, 13 ... controller, 15 ...
...Weave cycle discriminator, 16...Movement command device, 1
7...and gate, 18...sensor, 20...
...Rotating body, 22... Moving body, 23... Sensor.

Claims (1)

[Claims for Utility Model Registration] (1) A jet pile loom 1 equipped with a defective yarn removing device 2, which includes a feeler 12 that detects the presence or absence of a weft yarn 3 on the arrival side of the weft yarn 3, and a first pick and a loose pick from the weaving cycle. A weaving cycle discriminator 15 receives a weft insertion defect signal from the filler 12 and confirms the state of loose picks from the weaving cycle discriminator 15, and a controller 13 of the defective yarn removing device 2.
A defective yarn removal operation control device 1 characterized by comprising an operation command device 16 that gives a start command to the
1. (2) A rotating body 20 that rotates the weaving cycle discriminator 15 once in one complete weaving cycle, and this rotating body 2
The defective yarn removal operation control device 11 as claimed in claim 1, characterized in that it comprises a sensor 18 for detecting a rotational phase of 0. (3) Utility model registration claim 1, characterized in that the weaving cycle discriminator 15 is composed of a moving body 22 that moves in conjunction with the movement of the pile fabric 8, and a sensor 23 that detects the position of this moving body 22. The defective thread removal operation control device 11 described in 1.