JPS6014859B2 - How to match patterns of Kasuri fabric using shuttleless loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a photo sensor that detects stop information marked at a position corresponding to the selvedge of a weft yarn and performs pattern matching of textiles. The present invention relates to a pattern matching method for warp fabrics using a patternless loom, which takes measures to prevent malfunctions due to detection of such factors.

Traditionally, mochi textiles were manufactured mainly for Japanese clothing in small and medium sizes, but due to a decline in demand, Hironaka textiles have recently been required to develop new uses other than Japanese clothing, such as clothing. .

The weaving of wide and medium-sized warp fabrics was difficult to achieve using conventional methods for weaving small and medium-sized iron fabrics, and new methods were required for pattern matching.

In other words, in the conventional weaving of small and medium-sized textiles using a power loom, a weft yarn is wound around a weft winding plate of a length that is suitable for the scale fabric, and this is installed inside the shirttle.
For each round, the length of one weft thread is unraveled from the weft winding plate, and inserted into the warp village mouth to be used.

By repeating this process, warp fabrics are sequentially woven, but with this method, there are restrictions on the length of the weft winding plate and the size of the shirttle to which it is attached, making it impossible to weave Hironaka textiles. This makes it difficult to automatically replace the weft winding board. The method that has been tried to date for weaving wide and medium weaving under such circumstances is to evenly wind the weft threads around a weft winding plate with an adapted inside inside the fabric, and then install this on one side of the non-azusa fabric. Then, each time the loom rotates, the weft thread guide position is moved and the length of one weft thread is released from the weft winding plate for weaving and pattern matching, or the weft thread is wound using a weft release piece. The method used was to take out the weft threads one by one from the board and weave them into the warp thread opening using the rapier method.However, in the former method, the amount of movement of the weft thread guide was large, and it was difficult to maintain an accurate amount of movement and perfectly match the pattern. If you try to do that, you won't be able to increase the speed of the loom, and you'll also need a high level of skill to wrap the weft around the weft winding board, which will result in poor winding efficiency.
It is difficult to match the pattern due to the difference in the winding length between the inside and outside of the winding layer, and it is also difficult to automatically replace the weft winding plate.

The latter method also has almost the same problems as the former, such as the need for skill in winding the weft to the weft winding board, poor winding efficiency, and difficulty in pattern matching due to the difference in winding length between the inside and outside of the winding layer. Overall, it was not possible to obtain high-quality textiles, and it was truly inefficient.

As another method, a pattern matching method is also disclosed in which the weft is stopped by detecting stop information magnetically or electrically by marking the weft with a ferromagnetic substance such as iron powder or an electrically conductive substance. However, the stop information added to the weft thread is unevenly marked, and the marked stop information tends to fall off, resulting in frequent detection errors. It has not been put into practical use because it causes damage to the weft, such as the weft threads becoming easy to break, and it is not possible to achieve a satisfactory pattern match.

The purpose of this invention is to eliminate these drawbacks and weave high-quality, high-medium mochi textiles with high efficiency.The present invention aims to eliminate these drawbacks and weave high-quality mochi textiles with high efficiency. The photo sensor detects the white background left on the beam in the area corresponding to the section, or the stop information colored with a color that can be detected by the photo sensor, and activates the solenoid to stop the weft at a certain position, and to stop the weft. By performing creasing while holding one end of the fabric near the edge of the fabric outside the weft opening, accurate mochi pattern alignment is possible, making it possible to weave highly efficient warp fabrics. If the system does not detect outage information or makes a detection error,
It is designed to automatically stop the operation of the loom.

A detailed explanation will be given below based on the attached illustrative drawings. In advance, a weft yarn 1 to which stop information has been given, which is left undyed white or colored in a color that can be detected by a photo sensor, is wound around positions corresponding to the edges of the fabric at regular intervals so as to fit in the fabric. The weft yarn 1 pulled out from the package 2 is given a constant tension by the tension adjustment device 3, and guided by the yarn guides 4, 5, and 6, the weft yarn 1 is passed through a knotting cutter attached to the rapier stand 12 near the entrance of the warp thread opening. 7 grips the end of the thread.

Between the tension adjustment device 3 and the thread tying cutter 7, there is a clamp 8 which is operated by a magnet and which grips and fixes the weft thread 1, and a photo sensor 9 which detects stop information, and a photo sensor 9 which detects tangerines etc. other than the stop information. A shutter 0 is provided to block the photo sensor 9 to prevent malfunction. 0 However, this shirt cover 10 is not necessary in the case of the method using electronic pulse signals, which will be described later.

A pier 11 mechanically operates by grasping the weft yarn 1 on a rapier stand 12, and performs an action of pulling the weft yarn 1 into the opening of the warp yarn 13.

14 is a crease fixed to the pier table 12, which presses the weft thread 1 drawn into the warp thread opening against the fabric front line 15 to create the crease; 16 is a crease that sweeps the thread end at the same time as the rapier 11 is released. 17 is a grasping thread release piece provided on the pier 11 for removing the weft thread gripped by the pusher 18 during creasing; 19 is a tying cutter for creasing. 7 is a cutter operating piece for activating and cutting the weft thread 1, 20 is a controller for amplifying the electric signal from the photo sensor 9, 21 is a malfunction detector, and 22 is a switch.

Next, the operation of the present invention will be explained.

As shown in FIG. 1, the weft yarn 1 is pulled out from the package 2, passes through the tension adjustment device 3, the yarn guide 4, and then passes through the photo sensor 9.
After passing through the front of the thread guide 5, clamp 8, and thread guide 6, the end of the thread is gripped by the thread tying cutter 7 to complete the preparation for operation, and when the switch is turned on and started, the rapier located near the left end in Figure 1 11 moves forward to the right, passes through the opening of the warp thread 13, reaches the knotting cutter 7, stops moving forward, and begins to move backward, but at this time, the rapier 11 grabs the end of the weft thread 1 and moves backward, cutting the warp threads. The weft thread 1 is pulled into the azusa mouth, returns to its original position (the position shown in Fig. 1), and stops.

This rapier 11 makes one reciprocation and the shirt cover 10 is closed until a little before it returns and stops, blocking the photo sensor 9 and preventing the photo sensor 9 from detecting the pattern of the weft thread 1 and the like and malfunctioning during that time. Then, the shirt pier 11 opens a little before it stops, and the photo sensor 9 detects the stoppage information of the weft thread 1. The detected stoppage information is converted into an electric current, amplified by the controller 20, and operates the clamp 8 by the magnetic coil, thereby tightening the weft thread 4.
stop retraction. When weft thread 1 stops in this way,
The mochi handle fits perfectly, and the rapier 11 is at the stop position (
(Position shown in Figure 1) Stop while holding the weft thread. Next, the thread 14 is pressed against the woven line 15 together with the rapier stand 11 to make a coin.

At this time, the gripping yarn releasing piece 17 of the rapier 11 hits the pusher 18, so that the rapier 11 releases its grip on the yarn end, and at the same time, the yarn end removing piece 16 flips the yarn end and removes it from the rapier 11. At this time, the twill cutter 7 hits the cutter action piece 19 to grip the weft thread 1, and at the same time cuts it on the fabric side closest to the gripping point. ) and open □. This completes one cycle of operation, and the same operation is repeated to continuously weave textiles.

If the photo sensor 9 fails to detect stoppage information while the shirt cover 10 is open, the malfunction detector 21 is activated and a safety device is activated to immediately stop the operation of the loom.

In the above-described operation, the opening and closing of the shirt sleeve 10 is performed using the mechanical operation of the loom, and an example thereof is shown in FIGS. 2 and 3.

That is, FIG. 2 shows a mechanical method using link motion, in which a rotating shaft 25 that operates one cycle per rotation is used.
The cam 26 attached to the link acts on the link 27, and the link 2
8 and 29, the shirt cover 10 is opened only once during one rotation of the rotating shaft 25, as shown by a solid line, and at other times it blocks the photo sensor 9, as shown by a phantom line. In FIG. 3, the cam 26 attached to the rotary shaft 25, which operates one cycle per rotation, closes the switch 30 and closes the solenoid 3.
1, the photo sensor 10 is attracted by magnetic force, and opens only once during one revolution of the rotating shaft 25, as shown by the solid line, and at other times, the photo sensor 9 is opened as shown by the phantom line.
is blocking.

Next, an example of an electronic method without using the shutter 0 will be described with reference to FIG. tl,t. 1′, tl
'' is the time interval required for one cycle movement of the loom, which corresponds to the time required for one revolution of the main shaft 25, and naturally tl=
tl'=tl''...

A is a weft thread pulse signal, which includes stop information and pattern information and is detected and emitted by the photo sensor 9; al,
al', ar, and al indicate stop information pulse signals, and the others are pulse signals based on pattern information or the like.

The stop information on the weft thread 1 is supposed to be marked at regular intervals that are synchronized with the one-cycle movement time intervals tl, tl', and tl'' of the loom, but the stop information on only al'' is incorrect and the position is slightly shifted. Indicates when there is. B is a rotating shaft pulse signal, which is taken from the rotating shaft that rotates once per cycle movement of the loom, and bl, bl', bl'', bl indicate weft stop interval pulse signals, and the intervals are determined by the loom. This coincides with the time intervals tl, tl', tl'' required for one cycle of movement.

c is a composite pulse signal, which is obtained by combining the weft pulse signal A and the rotating shaft pulse signal B. Of the weft pulse signal A, the stop pulse signals al, al', a
Since the l river and the rotation axis pulse signal B and the thread stop interval pulse signals bl, bl', and bl rivers match, the ten composite signal c
l, cl', cl..., and this + composite signal c
When the l, cl', and cl rivers occur, the clamp 8 is activated to stop the weft yarn 1 and perform pattern matching.

On the other hand, the stop pulse signal al'' of the weft yarn pulse signal A indicates that the stop information marked on the weft yarn 1 has been erroneously misaligned, and does not match the rotation axis pulse signal bl'', so it becomes a composite signal c2. appears, and this 10 composite signal c2
When this occurs, a safety device is activated to stop the operation of the loom. Although the above description has been made using a pier loom as an example, the method of the present invention can be similarly applied to other looms such as gripper looms.

According to the method of the present invention, by using the weaving selvedge marks that were conventionally used for small, medium and warp fabrics as stop information, the conventional method can be applied as is to mark stop information on the weft yarns, which is extremely simple. By detecting this and stopping the weft thread, it is possible to accurately align the vertical handle position, and the rapier can grip the weft thread and perform coining while maintaining a constant tension state. This allows Hironaka's textiles to be woven into beautiful products without distorted vertical patterns.
In addition, since the supplied weft yarn is wound into a cone or cheese shape, it can be made into a large package, allowing continuous weaving for long periods of time, eliminating the need for skill in winding the weft as in the past, and increasing the weaving speed. It is also possible to weave high-quality all-woven fabrics with high efficiency, such as at high speeds.

[Brief explanation of the drawing]

The attached drawings are illustrative diagrams showing embodiments of the method of the present invention, and the first
The figure shows a state in which the method of the present invention is carried out using a pier loom, and Figs. 2 and 3 show a method of opening and closing the shirt cover that blocks the photo sensor in order to detect the weft stop position. , FIG. 2 is a diagram showing a method using a mechanical method, FIG. 3 is a diagram showing a method using an electrical method, and FIG. 4 is an explanatory diagram of a method for detecting the stop position of the weft thread using a pulse signal. 1... Weft thread, 2... Package, 3... Tension adjustment device, 4, 5, 6... Yarn guide, 7... Feeding cutter,
8... Crumb, 9... Photo sensor, 10... Shutter, 11... Rapier, 12... Rapier stand, 13... Warp thread, 14... Streak, 15... Woven line, 16... Yarn end Removal piece, 17...Gripping thread release piece, 18...Pusher, 19...Cutter operation piece, 20...Controller,
21... Malfunction detector, 22... Switch, 25.
... Rotating shaft, 26... Cam, 27, 28, 29... Link, 30... Switch, 31... Solenoid, A... Weft pulse signal, B... Rotating axis pulse signal, C... Composite pulse signal, tl, tl', tl''...1 cycle movement time interval, al, al', al'', al'''...stop information pulse signal, bl, bl', bl'', bl...weft thread stop interval Pulse signal, cl, cl', cl'''・
...10 composite signals, c2...1 composite signal. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. The pattern of Kasuri fabric is created by marking stop information by leaving dye or coloring at the position corresponding to the fabric edge of the weft yarn, detecting this with a photo sensor, and stopping the progress of the weft yarn. In order to prevent the photo sensor from detecting a pattern other than the stop information and malfunctioning when performing fitting, the photo sensor is blocked by a shutter, and when the stop information passes the position of the photo sensor, the movement of the loom is prevented. A method for pattern matching of Kasuri fabrics using a shuttleless loom, characterized in that the shutter opens in synchronization with the loom, and pattern matching is performed by detecting stop information. 2. When performing pattern matching of Kasuri fabrics by marking stop information by leaving dye or coloring at the position corresponding to the fabric edge of the weft yarn, detecting this with a photo sensor, and stopping the progress of the weft yarn. In order to prevent the photo sensor from detecting pattern information other than stop information and malfunctioning, a weft pulse signal is generated by detecting weft stop information or pattern information, and a weft pulse signal is mechanically emitted at every weft stop interval. A pattern matching method for Kasuri fabrics using a shuttleless loom, characterized in that main axis pulse signals are synthesized and pattern matching is performed when both pulse signals overlap.