JPS5966541A - Wefting method in shred type 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 a piecemeal loom, that is, a loom in which the weft is inserted in pieces as in an air jet loom or a water jet loom. More specifically, the present invention relates to a weft insertion method for a piecemeal loom.

As is conventionally known, when weaving is performed using an air jet loom, for example, the length of the weft yarn to be inserted is measured and stored in advance. Is there a variety of things to know about side hands, storage methods, and closures?
For example, is there a way to tie the weft yarn inside the pool pipe using compressed air? There are methods such as wrapping the weft around the circumferential surface of the measuring drum and storing it.

However, the air pool method has a problem in that the amount of air consumed is large. Further, when a highly twisted yarn is used as the weft yarn, the weft yarn may become tangled in the storage section. In addition, this method is used in conjunction with the continuous sub-length method, in which a feed roller that rotates in synchronization with the machine table continuously supplies the weft yarn to the storage section, so several weft yarns are used and the weft yarns can be adjusted arbitrarily. It is difficult to use it for multicolor weaving where selective weft insertion is required.

On the other hand, in the drum pool method, because it is a continuous sub-length method, it uses multi-colored weave G91 like the air boule method, but it also mechanically winds the weft yarn around the drum and unwinds the weft yarn from the drum. In addition, the control mechanism is necessarily concave, and the structure of the control mechanism and the structure of the power transmission mechanism from t*m to the control II mechanism are complicated and large in size.

Therefore, there is a limit to its use in multicolor weaving due to space limitations.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method in which highly twisted yarns can be supplied without becoming entangled, and weft yarns can be sub-lengthened using a sub-lengthening device having a simple structure. A further object of the present invention is to provide a method that can be applied to multicolored weaving yarns to smoothly adjust the sub-lengths of multicolored weft yarns.

In the present invention, there are a step of marking continuous weft yarns at 1-bit intervals, a step of supplying numbered cotton yarn with the marks, a step of detecting the marks on the weft yarns, and a step of detecting the marks. The object described in -L is achieved by the weft insertion method comprising the step of stopping the supply of the weft yarn in response to a signal. By marking the weft yarn while unwinding it from the weft cheese and feeding it to the weft insertion jet and split pipe, 1. The invention can be practiced continuously. In this case, it is preferable to wrap the weft yarn unwound from the weft cheese on the weft tray, roller, and means, and to perform the above-mentioned marking by knowing the feed and yarn amount of the weft yarn from the rotation angle of the roller means. The roller means is preferably a weft storage accumulator, or a sub-length roller that is installed between the weft, the storage accumulator, and the weft cheese, and is rotated by the weft. A rotary encoder is connected to this roller means, and the rotation angle is detected by counting the marks on the rotary encoder. .

Another method is to mark 1. at predetermined intervals before winding the weft cheese. You can also use this weft/cheese as a creel rack.

It is preferable that the marking of the weft yarns is performed using ink activated by an electric signal or an inkjet from a nozzle. In this case, the mark may be detected by a photoelectric photodetector stage based on the color of the ink or the difference in brightness between the weft □ and the ink.Also, if the ink used to detect the mark contains a magnetic material, the magnetic detection sensor Even if the mark is detected by

Hereinafter, the present invention will be described in detail with reference to the attached FIG. 1Fli showing an embodiment of the present invention.

At t in FIG. 1, the weft yarn 19 unwound from the cheese 11 is taken up by the akicomulator 13. The accumulator 13 pulls out the weft yarn 19 from the cheese 11, rewinds it with low tension, and smoothly feeds the weft yarn 19 with low pulling resistance. Several pickles of weft yarns 19 of about 20 picks are constantly pooled, and when the pooled weft yarns are consumed and reduced by weft insertion, they are rotated and stored again. There are two types of Akicomulator 13, one in which the drum rotates and the other in which the arm rotates, but either type may be used in the present invention.
Any material commonly used to relieve the unwinding tension of the yarn can be used as is.

The inkjet nozzle 12 faces the path of the weft 19 from the cheese 11 to the accumulator 13. The Infusi Ella T nozzle 12 is used for printing with a combination coater, and can instantaneously spray ink using an electric signal to make a mark 20 on the weft 19.

A mark is engraved directly on the side of the Achimulator 13.
Alternatively, a rotary encoder having a rotary disk 29 with a slit 30 as shown in FIG. 4 is attached. A rotation detection sensor 14 is installed opposite to the side surface of the accumulator 13, and detects the mark on the side surface of the accumulator 13 or the slit 30 of the 1-coat encoder and counts to detect the rotation angle of the accumulator 13. ing.

The main air jet nozzle 17 uses compressed air supplied from the switching valve 18 to draw out the weft yarn 19 stored in the akicomulator 13 and insert it into a shed formed between the upper and lower warp yarns. After inserting the weft, beating is performed using a reed 28.

In the embodiment not shown in FIG. 1, a mark detection sensor 15 and a gripper 16 are installed between the spacer unit 13 and the main air jet nozzle 17. The mark detection sensor 15 detects the mark 20 made on the weft 19, and generally uses a phototube, light emitting diode, phototransistor, etc., and marks 20 are made using ink containing a magnetic substance. In some cases, a magnetic sensor may also be used. The gripper 16 is opened and closed by an electromagnetic solenoid, a fluid pressure cylinder, or the like. 31 is a sensor for detecting a weft insertion error.

The detection signals of the rotation detection sensor 14, the mark detection pin 1/15J5, and the weft insertion error detection sensor 31 are transmitted to the control box 21, and based on these signals, the
ttlJ pock, S21 is inkjet nozzle 12
, sends an operating signal to the gripper 1G and the switching valve 18.

In FIG. 1, the weft yarn 19 unwound from the cheese 11 is taken up by the akimulator 13. A mark engraved directly on the side of the Aki 1 muller 13 or the rotating disc 2
The slit 30 formed in 9 is connected to the rotation detection sensor 118;
The rotation angle of the accumulator 130 is detected by counting. Based on this detected rotation angle, an electrical signal is transmitted from the control box 21 at predetermined intervals, and thereby,
Weft 1 from cheese 11 to aki, :l-muleta 13
The inkjet nozzle 12 facing the path 9 instantly sprays ink and makes a mark 20 on the weft 19.

A signal from the control box 21 causes the gripper 16 and the nozzle 17 for the main air jet 1 to operate in synchronization with the operation of the 41 aircraft. That is, the gripper 1G opens 1, and the compressed air from the switching valve 18 causes the main air jet nozzle 17 to insert the weft yarn 19 into the shed.

The mark 20 attached to the weft 19 is detected by the mark detection sensor 15, and it is detected that a predetermined length of the weft 19 has been inserted. Then, the gripper 16 closes and weft insertion stops.

In the embodiment described above, the accumulator 13 allows the weft 19
As shown in Figure 2, Cheese 1
1 and the accumulator 13 may be provided with a sub-long opening to freely rotate by the weft 19, the weft 19 may be wound around the length-measuring roller 22, and the length of the weft may be measured by the rotation angle of the sub-long roller 22. .

Alternatively, the mark detection/output sensor 15 may be installed anywhere as long as it is downstream of the accumulator 13 when viewed in the traveling direction of the weft yarn 19. For example, as shown by the solid line in FIG. 2, the stitching may be done at the middle of the weave width, or at the edge of the fabric. In particular, the mark detection sensor 15 is connected to the main air jet nozzle 17 near the outlet 31. By installing the main air jet nozzle 17 near the selvage on the opposite side, the mark 20 made on the weft 19 can be positioned at the right or left selvage or tuft selvage (discarded selvage) of the woven fabric. As a result, the trouble of washing away the marker 20 can be saved. - Furthermore, as shown in FIG. 3, the present invention includes a feed roller 23 for feeding out the weft yarn 19, an air nozzle 24 for feeding the weft yarn 19 from the feed roller 23 to the air pool pipe 25 by the action of compressed air. The present invention can also be implemented in an air pool type sub-length device comprising an air pool pipe 25 with a slit 26 and a slit 26. In FIG. 3, parts that are the same as or similar to those shown in FIGS. 1 and 2 are given the same reference numerals, and their explanations are omitted.

, Other aspects of the present invention: Implementation method: Tie off and rewind the tightening thread. In the mouth: Mark predetermined intervals in advance.
This weft cheese can also be used by hanging it over a creel as shown in Figure 1. By doing this, the mark 20 is detected by the mark detection sensor 15, and the gripper 16 and the gripper 71-20 detect the weft 1? The weft insertion can be controlled easily, and the weft insertion step height can be easily adjusted. NaJ
5. When dealing with broken threads or connecting to spare cheese, just align the marks 20 and connect.

Furthermore, in the present invention, a plurality of marks 20 are attached per one pick, or a plurality of mark detection U is carried out along the weft path.
Attach the sensor 15 to the center of the thread, determine the yarn speed from the mark interval (between the mark detection sensor) and the time required for the weft to pass through the gap, and determine the delay in the operation of the gripper 16. It is also possible to correct the misalignment of the sub lengths that occurs due to fluctuations in yarn speed and yarn speed.
An electromagnetic gripper using an electromagnetic solenoid has a delay in the rise of magnetic force and v! ! , it takes time for the mechanical part to accelerate, causing a delay in the glyph movement. However, from the signal generation □
The variation in the time it takes for the gripper to close is relatively small. Therefore, a relatively constant 1 ``gripper 1g'i'' delay n;
If the weft yarn 19 is traced at a constant speed within 1 m, the length measurement becomes constant. However, since the weft speed changes □largely,
The amount of sub-length varies. To solve this problem, as described above, a plurality of marks 20 or mark detection sensors 1b are used, the weft speed is determined, the timing of the gripper fM%3 or the gripper speed is hill-n+rolled, and the lengthwise viscosity is calculated. It is possible to skip improvement□.

According to the present invention, with a simple structure of 8 oka weft sub-lengths □
can be done. Furthermore, according to the present invention, the lengths of multi-colored weft threads can be smoothly measured, and multi-colored weaving can actually be performed by 7+111η゛□. An example of this is shown in Figure 6 (in red).In Figure 1116, the length measuring devices shown in Figure 1 are installed in each of the multicolors.See Figure 1 for each of these sub-length devices. J, which I explained, works.

The length measuring device embodying the present invention is extremely simple.
Therefore, in this way, it is possible to install a large number of measuring □ lengths on the loom □ of the stand.

[Brief explanation of drawings]

・Figures 1 to 6 show an apparatus for carrying out the method of the present invention, with Figure 1 being a plan view, Figure 2 being a front view of another embodiment, and Figure 3 being a plane view of yet another embodiment. Figure 4 □ is a rotary j
- A perspective view of one embodiment of the encoder, FIG. 5 is a front view of yet another embodiment, and FIG. 6 is a plan view of the embodiment for multicolor weave □. 11... Cheese, 12... Infusiera 1-nozzle, 13... Accumulator, 14... Rotation detection sensor, 15... Mark detection sensor, 16... Gripper, '□17... Main go jet nozzle, 1
8...Switching valve, 19...Weft, 20...
・Mark, 21...Control box, 22・
...Length measuring roller, 23...Feed roller,
24-,... Air nozzle, 25... Air pool pipe, 26... Slit, 27... Weft supply error detection sensor, 28... Reed, 29... Rotating disk,
30...Slit, 31...Weft insertion error detection sensor, Patent applicant: Toyota Industries Corporation, Patent attorney, Eiji Sannaka Figure 6-224-

Claims (1)

[Scope of Claims] 1. In the weft inserting mode of a single-piece loom, a step of marking consecutive weft yarns at intervals of 1'1, a step of supplying the weft yarns that have passed the marks, and A method for inserting a weft into a fragmented weave, which is characterized by the steps of issuing one weft mark and stopping the supply of weft in response to a mark detection signal. 2.1i! Yarn Cheese bow for weft ＼ra unraveling cotton insert ′spray Q
The weft insertion method for a piecemeal loom according to claim 1, wherein the marking step □ is performed while the weft is being fed to one pipe. 3. The method for inserting scarlet threads into a fragmentary loom as described in Section 1': of the section 1', in which the step of marking predetermined intervals in advance is carried out before the weft teeth and reels are hung. 4. The weft yarn unwound from the weft cheese is wound around one roller means, the amount of yarn fed for one prefecture is known from the rotation angle of the roller means, and the marking is performed in the process of claim 2. The weft insertion method for the fragment type loom described. 5. The weft insertion method for a fragmentary loom according to claim 4, wherein the roller means is an accumulator for weft storage. 6. The weft insertion method for a fragment square type loom according to claim 4, wherein the roller means is a length measuring roller that is installed between a weft storage accumulator and a weft cheese and is rotated by the weft. 7. Connect a rotary encoder □ to the roller means,
The weft insertion method for a fragmentary loom according to any one of claims 4 to 6, wherein the rotation angle is detected by measuring the marks of the rotary encoder. - 8. Weft inserting of a fragmentary loom according to any one of claims ``1'' to 3, wherein the marking of the weft yarn is performed by ink jet from an ink nozzle □. Method. 9. The weft insertion method for a piecemeal loom according to claim 8, wherein a mark is produced by the color of the ink applied to the weft. 10. Patent claim 8'HffJI f8 in which the color of the ink is changed to a color different from the color of the C1 weft according to the color of the weft.
, 94:. i;11! How to insert the weft of a □fragment type loom. □
□″″: 11. The weft insertion method for single piece weave according to claim 9, wherein the color of the ink is different in brightness from the color of the weft. 12. The weft insertion method for a fragmentary loom according to any one of claims 8 to 11, wherein the color of the ink is detected by a photoelectric light receiving means. 13. The weft insertion method for a fragmentary loom as set forth in claim 8, wherein the ink used for marking contains instep material and the 7-ri is detected by a sensor. 14. The fragment according to any one of claims 114 to 13, in which the supply of the weft in response to the mark detection signal is stopped by a gripper, and the gripper is operated on the operating side by a stone-shaped solenoid. 15. The fragment type I1m weft insertion method according to claim 1, wherein a plurality of weft cheeses, ink nozzles, accumulators, and grippers are installed to weave multicolored weft yarns. ,'l Beni,・