JP2676441B2 - Method and device for weft pattern matching for reweaving - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for pattern matching of weft yarns for re-woven cloth for automatically weaving re-woven cloth using a loom such as a rapier room.

[0002]

2. Description of the Related Art Conventionally, when weaving a rewoven cloth, first, a design or a design is drawn on paper and analyzed so as to be formed with a weft. Next, in order to form the analyzed weft, the weft is knitted on the weft forming loom using the analyzed color yarn of the warp (which is the weft on the reweaving loom) as the weft.

The woven fabric thus woven is cut into a width of 3 to 4 warps and twisted to form a molding weft for reweaving. When this mall-shaped weft is densely driven into the warp of a loom loom such as a rapier room, a predetermined pattern or design is reproduced on both sides of the fabric, and a thick and flexible rewoven fabric is woven. It is like this.

[0004]

In the above-mentioned conventional weaving of re-woven cloth, a great amount of time is required due to the procedure in which the ends of the molding-like wefts are held one by one while being moved left and right and then aligned one by one and driven. There is a problem that productivity is extremely poor because it takes time and labor. In addition, as described above, the weft alignment is one by one while holding both ends of the mall-shaped weft by hand and moving it to the left and right. It requires skill depending on the operator's feeling and experience, and the operator's fatigue is also great. There was also a problem.

[0007] In addition, the tension of the weft yarns tends to be uneven when aligning the weft yarns one by one while holding both ends of the mall weft yarn by hand and moving it to the left and right, and it is difficult to make a woven fabric of uniform quality. There was also a problem called.

Therefore, it is conceivable to use a conventional loom to increase the productivity of the rewoven cloth, but since the weft yarn is twisted and obtained,
There is also a problem that it cannot be put to practical use because it does not have elasticity and length, and if it is continuously rewoven, the pattern will collapse and it will not be a commercial product at all. The present invention has been proposed in view of the above problems, and enables the weaving by a loom without breaking the predetermined pattern or design, improving the productivity and producing a uniform high-quality rewoven fabric. The purpose is to

[0007]

In order to achieve the above-mentioned object, the weft pattern matching method for reweaving according to the present invention corresponds to the weft width and the pattern in advance when positioning the weft in the reweaving weaving. Different diameter portions are provided at predetermined positions at substantially constant intervals, the different diameter portions are detected by a sensor, and a different diameter portion detection signal is output, and this different diameter portion detection signal and a rotary encoder that is interlocked with the weft feed roller are used. When measuring the length between different diameter parts and pulling one end of the weft into the opening of the warp that holds the tip of the weft with the grip,
The weft is accurately woven by moving the yarn release position of the gripping part that grips the weft to an appropriate position and weaving it in tandem with the difference between the value measured by the controller It is characterized in that it is adapted to the handle position.

Next, the weaving weft pattern aligning device according to the present invention is a weaving weft yarn for reweaving in which different diameter portions are provided at predetermined positions at substantially constant intervals corresponding to weaving width and handle. Of the measuring part which detects the different diameter part of the measuring part and measures the distance between different diameter parts, and the gripping part which grips the weft in conjunction with the difference between the measured distance value between the different diameter parts of the measuring part and the weave width of the fabric. The measuring unit is equipped with a control device for controlling the movement of the yarn releasing position to an appropriate position, and the measuring unit is driven by a light transmitting tube through which the weft passes, a different diameter portion detecting unit provided in the light transmitting tube, and a pulse motor. The present invention is also characterized in that at least a pair of weft supply rollers and a rotary encoder interlocking with the rollers are configured to measure the interval between the different diameter portion and the next different diameter portion given to the reweaving weft yarn.

Another feature is that the inner diameter of the light transmission tube of the measuring section through which the weft thread passes is formed to be equal to or slightly smaller than the outer diameter of the reweaving weft thread.

[0010]

[Function] A different-diameter yarn portion of 2 cm to 3 cm is provided at a substantially constant interval corresponding to the weaving width, and the re-woven weft for pattern construction with the different-diameter yarn portion as a reference position is used to open warp yarns with a rapier or the like. Before being inserted into the, the distance between the reference position and the next reference position is measured by the measuring unit, and is fed out by the roller of the gripping unit.

After that, the weft yarn is gripped by the roller of the gripping part at the position of the optimum length for pattern matching based on the length measured by the measuring part. The weft yarn sent out from the roller of the grip portion in this manner is retained in the yarn storage portion.

In parallel with this operation, the weft release position moving section of the rapier operates in accordance with the weft interval measured to move the weft release position to an optimum position. After this series of operations is completed, when the weft yarn is inserted into the opening portion of the warp yarn by the rapier, an accurate rewoven pattern is reproduced.

If the inner diameter of the light transmitting tube of the measuring section through which the weft passes is formed to be equal to or slightly smaller than the outer diameter of the reweaving weft, the weft rubs the inner peripheral surface of the light transmitting tube. It is possible to prevent malfunction of the different-diameter portion detection unit due to dust and foreign matter adhering to it.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. First, the weft 1 used in the present invention is analyzed by drawing a pattern or a design on paper in advance as in the conventional case and forming it with the weft, and the warp (which is the weft in the reweaving loom) of the weft forming loom is described above. The wefts of the analyzed colors are woven as a woven fabric having a woven structure, and the woven fabric is cut into widths of 3 to 4 warps to form wefts.

As shown in FIG. 1, a different diameter portion 2.2 having a length of about 20 mm obtained by removing moldings at intervals substantially equal to the width of a woven fabric woven by a loom in its length direction・ 2 ・
・ ・ Is formed. Different diameter portion 2 formed on weft 1
As shown in FIG. 2, the sensor 3 for detecting 2.2..2 as a predetermined reference position to be described later has a tube member (light transmitting member) made of a light transmitting member such as glass at an intermediate height position of the casing 5 of a substantially rectangular parallelepiped. Tube (4), a light projecting portion (6) is formed above the pipe material (4), and light receiving portions (7) are respectively arranged below the pipe material (4). When the weft (1) passes through the pipe material (4), the light receiving portion (7) .. are detected by the change in the amount of light received by.

The inner diameter of the pipe material 4 passing through the intermediate height position of the casing 5 is equal to or slightly smaller than the outer diameter of the weft thread 1 passing through it. The inner peripheral surface of No. 4 is rubbed to prevent the occurrence of dirt due to the attachment of cotton wool, foreign matter, and the like.

FIG. 3 is an overall schematic diagram showing an outline of a weft thread pattern aligning device for re-woven cloth by a rapier loom embodying the present invention. In the figure, reference numeral 8 is a gripping portion, in which two sets of upper and lower rollers 9 and 10 for driving the weft 1 while holding the weft 1 while preventing it from slipping and gripping the weft 1 after the feed is stopped are provided. Has been formed.

A timing belt 13 is wound between the rollers 10 and 10 below the grip portion 8 and the output shaft 12 of the driving pulse motor 11 disposed below the rollers.
A rotary encoder 14 is arranged on one side of the timing belt 13. This rotary encoder 14
The output signal of the weft yarn 1 and the detection signal of the different diameter portion 2 of the weft yarn 1 of the sensor 3 are input to the computer 15 so that the yarn length of the weft yarn 1 sent out is detected. Sensor 3 for detecting the temperature, rotary encoder 1
4 and a computer 15 that receives these detection signals form a yarn length measuring unit 18.

The driving pulse motor 11 is a computer 1
5 and a loom (not shown), such as a timing detection device 16 and the like, is configured to control the rotational drive. Reference numeral 20 in the drawing denotes a yarn storage portion, which is a hollow and flat rectangular tube-shaped body 21, and an air provided at one end opening portion of the tube body 21 so as to inject air inward. The weft yarn 1 is composed of a nozzle 22 and is pushed by the compressed air from the air nozzle 22 into the tubular body 21 until the weft yarn 1 sent out from the rollers 9 and 10 is pulled out by the rapier 23 and stored.

Reference numeral 24 in the drawing denotes an open position moving portion of the rapier 23, which is composed of a weft opening cam 25 and a positioning air cylinder 26 for slidingly driving the weft opening cam 25 in the width direction of the woven cloth.

The rapier 23 is slidably driven in the width direction of the woven cloth by an advancing / retreating drive device (not shown), and a gripper 27 for gripping / opening the yarn end of the weft 1 is arranged at the tip end portion thereof. When the rapier 23 moves rightward in the drawing and one end of the gripper 27 comes into contact with the weft yarn releasing cam 25, the gripper 27 is opened, and the yarn end of the held weft yarn 1 is released.

The timing detecting device 16 includes a timing plate 29 installed on a crankshaft 28 of a rapier loom and a specimen 3 embedded in the timing plate 29.
The timing sensor 31 detects 0. The computer 15 performs a comprehensive control by combining a series of operations of the timing sensor 31, the weft yarn length measuring unit 18, and the weft release position moving unit 24 of the rapier 23 with the data input from the timing detection device 16. Is.

In the figure, reference numeral 32 is a can for storing the weft yarn 1 used for weaving as a thread block, 33 is a cutter installed in a rapier loom, 34 is a warp opening, and 35 is a woven rewoven cloth.

In FIG. 3, the weft yarn 1 near the can 31 passes through the sensor 3 for detecting the different diameter portion 2, the yarn length measuring portion 18 and the grip portion 8 and is stored in the tubular body 21 of the yarn storage portion 20. The state immediately before being inserted into the warp opening 34 by the rapier 23 is shown. 4 to 6 are operation explanatory views of the weft release position moving unit 24. FIG. 4 shows the weft release cam 2
When the gripper 27 comes into contact with the weft yarn releasing cam 25 at the reference position in the state where 5 is at the reference position, the end of the weft yarn 1, which has been opened and held, is released.

FIG. 5 shows that when the weft releasing cam 25 is driven by the air cylinder 26 toward the side of the re-woven fabric being woven, the above-mentioned FIG.
The gripper 27 is opened earlier than the reference position to release the weft thread 1. On the contrary, as shown in FIG. 6, when the weft release cam 25 is driven to the air cylinder 26 side, the gripper 2 is moved later than in FIG.
7 is opened and the weft 1 is released.

The operation of the reweaving weft handle aligning device formed as described above will be described with reference to FIGS. 7 to 10. The patterns shown in these figures are the best matching examples at the center of the woven fabric. FIG.
Shows just before the start of pattern matching, and weft yarn 1 for reweaving
The different-diameter portion 2 described above is formed in advance, and the different-diameter portion 2 is used as a reference point M0, M1, M2, ...
The length of the weft 1 between M0 and M1 is L0, the length of the weft 1 between M1 and M2 is L1, and these different diameter portions 2 are the weft length measurement reference point and its length. The values are sequentially set and the midpoint of each length is set to G0, G1, G2 ...

W is the weaving width of the rewoven cloth 35 during weaving, D is the distance from the left end of the weaving width W to the different diameter portion sensor 3, and d is the different diameter portion sensor 3 to the next reference point M2. Is the distance to. Then, in FIG. 7, the weft releasing cam 2
5 is installed at a predetermined position (reference position) T0 from the right end of the weaving width W of the re-woven cloth 35 that is being woven.

Next, from this state, as shown in FIG. 8, the rollers 9 and 10 are driven, and the weft 1 sent out from the rollers 9 and 10 is driven.
Is sent to the yarn storing section 20 in a "U" shape by compressed air jetted from the air nozzle 22 and stored therein. At the same time, the different-diameter portion sensor 3 and the rollers 9.1 of the grip portion 8
The output signal of the rotary encoder 14 arranged on one side of the timing belt 13 that drives 0, the distance from the reference point M2 of the weft 1 and the reference point M1 before it, that is, the length of the weft 1 to be driven this time. L1 is measured.

At this time, the length L1 of the weft 1 calculated by the computer 15 is L1 = d + D, and the difference Δ in length between L1 and W is calculated as Δ = L1-W.

Further, the weft 1 having the length L1 is woven, and in order to match the midpoint G0 of the weft 1 previously woven and the midpoint G1 of the weft 1 woven this time, the reference point M
After 2 is detected by the different-diameter portion sensor 3, how much extra should be fed is calculated. The amount S of extra feeding is S = D-Δ / 2, and the moving position T1 of the weft yarn releasing cam 25 corresponding to this is calculated next.

The value T1 = T0 + Δ / 2. After the above calculation is completed, as shown in FIG. 9, the weft 1 is fed into the yarn storage section 20 by S from the state shown in FIG. 8, the rotation of the rollers 9 and 10 is stopped, and the weft 1 is held, and The position of the weft release cam 25 is moved by T1 and then stopped. Then, as shown in FIG. 10, when the rapier 23 operates from the state of FIG. 9 and the weft 1 of the L1 portion is woven,
The midpoint G1 of the weft 1 and the midpoint G0 of the weft 1 woven in the previous step match.

The value of S described above is stored in the computer, and in order to match the midpoint G1 of the weft 1 woven this time with the midpoint G2 of the weft 1 woven this time, the reference point M3 is a different diameter portion. After being sensed by the sensor 3, it is used as data when calculating how much extra should be sent. After that, by repeating this operation continuously, the interval between the reference positions, that is, the different diameter portions 2.2 of the weft 1
Even if there is considerable variation in the intervals, the variations can be equally distributed to the left and right, so that the patterns can be accurately matched.

The timing of these series of operations is performed together with the data from the timing detection device 16 of FIG.

In this embodiment, the midpoint G0.
Re-woven cloth 3 to be woven though the pattern matching in G1 ... was shown.
It goes without saying that the adjustment of the left end, the adjustment of the right end, and the mixing of these matching positions can be easily performed by changing the calculation method.

[0035]

According to the present invention, the distance between the reference positions of wefts, that is, the length of each weft yarn for pattern construction is measured, and the position for gripping the weft yarn and the position for releasing the weft yarn after insertion are measured. Since the re-woven cloth is woven while changing it, optimum pattern matching can be achieved even if the length of each weft yarn for pattern construction is different.

As a result, there is an advantage that the re-woven cloth can be continuously woven by the rapier loom and the productivity thereof can be greatly improved.

In addition, since the wefts can be mechanically aligned, the tension can be made substantially uniform, and a high quality woven fabric can be easily produced.

When the inner diameter of the light transmitting tube of the measuring section through which the weft passes is formed to be equal to or slightly smaller than the outer diameter of the reweaving weft, the weft passing through the light transmitting tube is used to form the inner portion of the light transmitting tube. Since the peripheral surface is rubbed, it is possible to prevent malfunctions of the sensor due to dust and foreign matter adhering to the peripheral surface, and it is possible to always perform accurate alignment.

[Brief description of the drawings]

FIG. 1 is a perspective view of a weaving yarn for reweaving used in the present invention.

FIG. 2 is a perspective view of a different diameter portion sensor.

FIG. 3 is a schematic configuration diagram of a rapier loom embodying the present invention.

FIG. 4 is a plan view schematically showing a reference state of a weft release position in a rapier loom.

FIG. 5 is a plan view showing an outline of a state in which a weft yarn near a reference state of a weft yarn releasing position in a rapier loom is quickly released.

FIG. 6 is a plan view showing an outline of a state in which a weft yarn that is close to a reference state of a weft yarn releasing position in a rapier loom is slowly released.

FIG. 7 is an operation explanatory view of the rapier loom embodying the present invention.

FIG. 8 is an operation explanatory view of the rapier loom embodying the present invention.

FIG. 9 is an operation explanatory view of the rapier loom embodying the present invention.

FIG. 10 is an operation explanatory view of the rapier loom embodying the present invention.

[Explanation of symbols]

Continuation of the front page (56) Reference JP-A-63-190045 (JP, A) JP-A-64-68543 (JP, A) JP-A-3-146738 (JP, A) JP-A 64-77644 (JP , A) JP 58-70743 (JP, A) JP 53-35065 (JP, A) JP 3-185155 (JP, A) JP 4-41742 (JP, A) 61-183987 (JP, U)

Claims (3)

(57) [Claims] 1. When positioning a weft thread in reweaving, the weft thread is previously provided with different diameter portions at predetermined positions at substantially regular intervals corresponding to the weave width and the handle, and the different diameter portion is detected by a sensor. A different diameter portion detection signal is output, and the length of the different diameter portion is measured by this different diameter portion detection signal and a rotary encoder that works in conjunction with the weft feed roller. When pulling it into the opening of the warp that is gripped and opened, the thread release position of the gripping part that grips the weft is adjusted to an appropriate value by interlocking with the difference between the value measured by the different diameter part detection part by the control device and the weave width of the fabric. A weft pattern matching method for reweaving, wherein the weft is accurately aligned with the pattern position by moving it to a position and weaving it. 2. A reweaving weft in which different diameter portions are provided at predetermined positions at substantially constant intervals corresponding to the weaving width and the handle, and a different diameter portion of the rewoven weft is detected to determine a distance between different diameter portions. A measuring unit that measures
The measuring unit is equipped with a control device that controls the yarn release position of the gripping unit that grips the weft yarn to an appropriate position in conjunction with the difference between the measured distance value between the different diameter portions of the measuring unit and the weave width of the fabric. A light transmission tube through which the weft passes, a different diameter portion detection unit provided in the light transmission tube, at least a pair of weft supply rollers driven by a pulse motor, and a rotary encoder that is interlocked with the rollers. A weaving pattern adjusting device for reweaving, which is configured to measure a distance between a different diameter portion given to a weaving weft yarn and a next different diameter portion. 3. The reweaving according to claim 2, wherein the inner diameter of the light transmission tube of the measuring portion through which the weft passes is formed to be equal to or slightly smaller than the outer diameter of the reweaving weft. Weft pattern matching device.