JP2000256942A - Measurement of weft position on production of woven fabric and device for arranging pattern of woven fabric and method for arranging pattern of woven fabric and shuttle-having loom and control of operation of shuttle- having loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently correspondingly measure the positions of wefts and arrange the pattern of a woven fabric even on the production of the woven fabric, such as a woven fabric having a cross pattern, requiring the highly accurate positioning of the pattern, by monitoring the position of a mark coated on the turning point of a weft by the use of a CCD camera to detect the offset and then operating a weft pin and a weft gripper to arrange the pattern. SOLUTION: This method for measuring the position of a weft on the production of a woven fabric comprises coating the turning position of the weft with a marking material comprising a paste and a near IR light-absorbing substance such as activated carbon during the production of the woven fabric by the use of a shuttle-having loom 12, monitoring the weft with a CCD camera 4 on a background plate for reflecting and scattering the near IR light, treating the image to detect the coordinates of the mark position, and thus detect the offset of the weft. The method for arranging the pattern of a woven fabric comprises controlling the movement of both a weft pin and a weft gripper with a weft control mechanism and arranging the pattern through a pattern-arranging device 13. The weft pin is movably disposed and used for hooking and holding the weft. The weft gripper is used for holding and positioning the weft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft position measuring method during weaving, a fabric pattern matching device, a fabric pattern matching method, a shed loom, and an operation control method for a shed loom.

[0002]

2. Description of the Related Art Conventionally, in the case of woven fabrics requiring pattern matching such as Kasuri woven fabric, a weft pattern matching mark given to the weft width length unit during weaving is conventionally used for warp ears. The pattern is formed on the woven fabric by weaving with positioning. This pattern matching work is a work that is repeatedly performed for each of the wefts with the handle, and the operator stops the loom, grips the yarn, and performs weaving each time.

In order to automate pattern matching, Japanese Patent Application Laid-Open Nos. 55-84443 and 63-190045,
JP-A-6-2241 and JP-A-6-173140 have been proposed, all of which are automation in rapier looms and are difficult to use for the production of a main pattern matching fabric, a kasuri fabric, and have the following problems. .

[0004] Existing looms cannot be used, and rapier looms for small widths are few.

[0005] Since the weft is cut, the yarn loss is large.

[0006] Robust ear tissue is not suitable for the required scale.

[0007] Rapier ears are denied in markets that trade in cloth.

[0008] The method of producing Kasuri yarn must be changed.

[0009] It is difficult to match patterns when using a plurality of weft threads.

As for the method of detecting the weft pattern alignment mark, a method of optically detecting the presence or absence of the mark with a color sensor or the like (Japanese Patent Laid-Open No. Hei 6-2241) and a method of detecting the mark by electrical contact (particularly, No. 8-249058) is known.

However, the former has a problem that it is difficult to detect the position of the weft pattern alignment mark in place of the position of the weft pattern alignment mark, so that it is difficult to detect the position with high accuracy. However, there is no problem that the weft pattern can be satisfactorily adjusted at present.

The present invention provides a method for measuring the position of a weft yarn during weaving, a device for matching a pattern of a woven fabric, a method for matching a pattern of a woven fabric, a method for controlling a shed loom, and a method for controlling the operation of a shed loom, which solve the above problems. is there.

[0013]

The gist of the present invention will be described with reference to the accompanying drawings.

At the time of manufacturing a fabric woven by the warp 1 and the weft 2, a mark material 3 is provided at a position where the weft 2 is turned back.
The position of the weft 2 at the time of weaving is characterized in that the weft 2 provided with the mark material 3 is monitored by a CCD camera 4 and the position of the mark 2 is measured by detecting the coordinates of the mark position by image processing of the CCD camera 4. It relates to a measuring method.

A mark material 3 attached to the weft 2
Adopts a mark material 3 prepared by mixing a substance that absorbs near-infrared light such as activated carbon into a glue, coats it on the weft yarn 2, and applies the mark material 3 on a background plate 5 that diffuses and reflects near-infrared light.
The method according to claim 1, wherein the position of the weft 2 is measured by detecting the position of the weft 2 by capturing it in a camera 4 and performing image processing.

A weft pin 6 attached to the shuttle loom and movably provided for hooking and positioning the folded weft 2 before beating, and a folded weft also likewise before beating. A weft gripper 7, which is gripped and opened and movably provided for gripping and positioning the gripper 2, and a weft control mechanism 8 for controlling movement of the weft pin 6 and the weft gripper 7, are provided. A pattern matching device for fabrics, wherein the pattern adjustment is performed by controlling the movement of the weft pin 6 and the weft gripper 7 so that the folded position of the weft 2 can be misaligned before beating. It is.

A weft pin 6 attached to the shuttle loom and movably provided for hooking and positioning the folded weft 2 before beating, and a folded weft also likewise before beating. A weft gripper 7, which is gripped and opened and movably provided for gripping and positioning the gripper 2, and a weft control mechanism 8 for controlling movement of the weft pin 6 and the weft gripper 7, are provided. Based on the information obtained by the weft position measuring method at the time of weaving according to claim 1 or 2, the movement of the weft pin 6 and the weft gripper 7 is controlled so that the return position of the weft 2 is set before beating. The present invention relates to a fabric pattern matching device which is configured to perform pattern matching by correcting misalignment.

Further, the beating yarn 2 which has been beaten before the beating is pulled and moved near the weft gripper 7 so that the gripping operation of the weft gripper 7 and the detecting operation of the position coordinates of the CCD camera 4 are hindered. 5. A sorting pin for sorting the beating weft 2 before beating and the beaten beating 2 for beating to correct the positional deviation so as to prevent the misalignment from occurring. The present invention relates to a pattern matching device for a woven fabric.

A weft pin 6 and a weft gripper 7 whose movement is controlled by the weft control mechanism 8 are provided on both sides of the warp 1, respectively, and the weft pin 6 is attached to one of the weft pins 6.
When functioning as a positioning pin for hooking and positioning the folded weft 2 inserted from one side, the weft pin 6 on the opposite side corrects the misalignment. The fabric pattern matching device according to any one of claims 3 to 5, wherein the device is configured to function as the sorting pin for sorting the fabric.

Further, the weft 2 is wound around a pipe member 10a,
A shuttle detector 22 for recognizing the presence or absence of the shuttle 10 is provided in the left and right shuttle storage units 11 for storing the shuttles 10 to be weft-inserted into the openings of the warp 1 sorted vertically by the heald device 9, and a shuttle to be inserted next. A shuttle movement detector 23 for detecting the shuttle 10 is provided, and the weft pin 6 is changed in function by detecting the weft insertion direction of the shuttle 10 based on a signal type from the shuttle detector 22 and the shuttle movement detector 23. The present invention relates to a fabric pattern matching apparatus according to claim 6, wherein the apparatus is configured.

In the method of pattern matching of a woven fabric, the position of the folded weft 2 inserted into the warp 1 is hooked and positioned on the weft pin 6, and the folded weft 2 is gripped by the weft gripper 7. Position, and in this state weft 2
The CCD 3 monitors the mark material 3 attached thereto, detects the mark position coordinates by image processing of the CCD camera 4, measures the position deviation of the weft 2, and based on the measurement result of the mark position coordinates, The present invention relates to a pattern matching method for a woven fabric, in which the pin 6 and the weft gripper 7 are moved and controlled by a weft control mechanism 8 to correct the folded position of the folded weft 2 and perform pattern matching.

Further, at the time of starting the shuttle loom, the shuttle detector 22 is provided with a shuttle movement control means for detecting the presence of the shuttle 10 in the shuttle housing 11 by the shuttle detector 22 to detect an abnormality and to prevent the start of the loom. Shuttle loom characterized by the above-mentioned, or any one of claims 3 to 7
A shuttle loom provided with the fabric pattern matching device described in the above section.

Further, the shed storage section 11 of the shed loom is provided with shuttle state detectors 19 and 20 for detecting whether or not the shed 10 is inserted and whether or not the weft 2 is wound around the pipe member 10a of the shed 10. The present invention relates to a shuttle loom comprising the shuttle loom or the fabric loom comprising the fabric pattern matching device according to any one of claims 3 to 7.

Further, the operation of the fabric pattern matching device according to any one of claims 3 to 7 and the operation of the shuttle loom are linked with each other, and the shuttle movement control means according to claim 9 controls the shuttle movement. 11. The operation of the loom is detected by detecting the presence of the shuttle 10 in the storage unit 11 by the shuttle detector 22, and the quality of the insertion of the shuttle 10 and the tube of the shuttle 10 are controlled by the shuttle state detectors 19 and 20 according to claim 10. The present invention relates to a method for controlling the operation of a shed loom, wherein the operation of a loom is controlled by detecting the presence or absence of a weft 2 wound around a member 10a.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

In the case of the first aspect of the present invention, the conventionally proposed method of detecting the deviation of the weft yarn is not only thin, but also flexible and inconsistent in the shape of the yarn material of the weft yarn 2. However, according to the present invention, the weft yarn 2 provided with the mark material 3 is monitored by the CCD camera 4, and the coordinates of the mark position are detected by image processing of the CCD camera 4 to detect the position of the weft yarn 2. Since the misalignment can be measured, the misalignment of the weft 2 can be satisfactorily detected satisfactorily even in the case of weaving such as cruciform pattern requiring high-precision positioning.

Further, in the case of the construction according to the second aspect of the present invention, the weft 2
Since the (pattern yarn) is multicolored, the color of the mark had to be changed according to the color of the weft yarn 2, but according to the present invention,
As the mark material 3 attached to the weft 2, a mark material 3 prepared by mixing a substance that absorbs near infrared rays such as activated carbon with a sizing agent is used.
Since it is taken into the CCD camera 4 above and is detected by image processing to measure the displacement of the weft 2,
The mark material 3 can be reliably detected without being affected by the color of the weft yarn 2, and the displacement of the weft yarn 2 can be detected satisfactorily.

In the case of the construction according to the third and fourth aspects of the present invention, in the case of weaving by a shuttle loom, for example, the weft 2 before beating is folded back at the ear of the warp 1. Although it is extremely difficult to correct the positional deviation with high accuracy by simply moving only one side of the weft 2, the present invention
The weft pin 6 is hooked and positioned on one side of the folded portion of the weft 2 to be folded, while the weft gripper 7 is gripped and positioned on the other side of the folded weft 2. By controlling the movement of the weft pin 6 and the weft gripper 7 by the weft control mechanism 8 in a state where the weft 2 is firmly fixed with the weft gripper 7, the folding position of the weft 2 is corrected before beating and high precision is achieved. Since the misregistration can be corrected, pattern matching can be performed very quickly and accurately.

In the case of the construction according to the fifth aspect of the present invention, in the case of weaving using a shuttle loom, for example, weft 2
The position of the weft 2 inserted by the looseness of the warp or the interference of the warp 1 is unstable, and the weft 2 to be aligned before the beating and the already-beaten weft 2 may overlap. The hooking of the beaten weft 2 before the beating near the weft gripper 7 causes the gripping operation of the weft gripper 7 and the detection operation of the position coordinates of the CCD camera 4 to be hindered. In order to prevent the misalignment correction, a sorting pin is provided to sort the non-beating weft 2 and the beaten weft 2 before the beating, so that the weft 2 not related to the misalignment correction is provided.
Can be reliably excluded from the displacement measurement area, and the displacement of the weft 2 can be reliably corrected.

Further, in the case of the construction according to the sixth aspect of the present invention, the weft pins 6 provided on both sides of the warp 1 function as positioning pins for the folded weft 2 respectively.
Since it is possible to function as a sorting pin that sorts the pre-beating weft 2 and the beaten weft 2 to correct the positional deviation, the weft 2 inserted from both directions of the warp 1 is used each time. By changing the function of the pin 6, a state where the weft 2 can be reliably positioned can be obtained.

Further, in the case of the structure according to the seventh aspect of the present invention, the weft insertion direction of the shuttle 10 can be detected by the signal type from the shuttle detector 22 and the shuttle movement detector 23. In connection with the detection of the weft insertion direction, one of the weft pins 6 is used as a positioning pin for hooking the folded position of the weft 2 for positioning, and the other weft pin 6 is related to the weft 2 which needs to be misaligned. The function of automatically changing the function such as a sorting pin for reliably removing the beaten weft 2 without the beating from the misregistration measurement area enables the misalignment of the weft 2 to be corrected more efficiently. .

Further, in the case of the invention as set forth in claim 8, the folding position of the weft yarn 2, which has been conventionally difficult, is corrected before beating, so that high-accuracy positional deviation correction can be performed satisfactorily. The pattern matching can be performed quickly and accurately.

Further, in the case of the invention as set forth in claim 9, the existence of the shuttle 10 (storage location) is always detected by the shuttle movement control means, and only the shuttle 10 to be weft-inserted is shuttled. Therefore, abnormal operation can be reliably prevented.

Further, in the case of the construction according to the tenth aspect of the present invention, it is possible to determine whether or not the shuttle 10 is inserted into the loom for performing automatic weaving by the shuttle state detectors 19 and 20 and to wrap the tubular member 10a of the shuttle 10. By providing the function of detecting the presence or absence of the weft 2 to be turned, it is possible to prevent a situation such as inserting the shuttle 10 into the weft 10 even though the weft 2 has run out.

In the case of the construction according to the eleventh aspect of the present invention, for example, since the shuttled loom is caused to reciprocate by hitting the shuttle 10 with a stick, the operation of adjusting the loom, starting and stopping, etc. Although it requires experience and must be constantly monitored during weaving, according to the present invention, it is possible to establish automation of a shed loom including a trouble monitoring function other than pattern matching.

[0036]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

Numeral 1 is a warp relating to a fabric, 12 is a known shuttle loom, 24 is a servomotor, 25 is a crank angle detector, 26
Is an indicator light with a buzzer.

In this embodiment, a weft pin 6 which is attached to the shuttle loom 12 and moves to hook and position the folded weft 2 before beating and the folded weft 2 also before beaten. A weft control mechanism 8 is provided to control the movement of a weft gripper 7 that is opened and closed and moves to grip and position the weft 2. The weft control mechanism 8 is obtained by a weft position measurement method using an image processing system. Based on the information thus obtained, the weft pin 6 and the weft gripper 7 are moved and controlled so that the folded position of the weft 2 can be corrected before beating to perform the pattern matching (hereinafter referred to as a pattern matching device 13). )).

Hereinafter, each component of the present embodiment will be described in detail.

The pattern matching device 13 is a stepping device for controlling the weft pin 6 and the weft gripper 7 movably in the vertical and longitudinal directions by the air cylinder 16 as shown in FIGS. A pair of motors 17 is mounted on a table 18 which can be moved in the front-rear direction by an air cylinder, and is mounted on the left and right sides above the weaving front of the shuttled loom 12. The air cylinder 16, the stepping motor 17, and the table 18 constitute a weft control mechanism 8 for controlling the movement of the weft pin 6 and the weft gripper 7 when the pattern of the weft 2 is aligned.

When the weft pin 6 functions as a positioning pin for hooking and positioning the folded weft 2 inserted from one side of the warp 1 during the pattern matching operation, the weft pin 6 on the opposite side is used. The position shift is performed so that the pin 6 does not hinder the gripping operation of the weft gripper 7 and the operation of detecting the position coordinates of the CCD camera 4 by pulling and moving the beaten weft 2 before beating. It is configured to be able to function as a sorting pin for sorting the weft 2 before beating to be corrected and the weft 2 after beating. Further, the weft pin 6 functions as a positioning pin according to the weft insertion direction of the shed 10 into which the weft 2 is wound around the pipe member 10a and inserted into the opening of the warp 1 vertically sorted by the heald device 9. The function as a sorting pin can be freely changed. That is, each swell of the shuttle storage unit 11 that accommodates the shuttle 10 has a shuttle detector 22 that recognizes the presence or absence of the shuttle 10 and a shuttle movement detector 23 that detects the next shuttle 10 to be moved by the shuttle card.
The weft insertion direction of the shuttle 10 is determined by the signal type from the shuttle detector 22 and the shuttle movement detector 23, and the function of the weft pin 6 is changed based on the weft insertion direction of the shuttle 10. It is configured to:

The weft gripper 7 is used for pattern matching operation.
In order to hold and position the folded weft 2 before beating, it is configured to be able to open and close and move freely to hold and position. Further, in this embodiment, when the shuttled loom 12 is started, the shuttle movement control means for detecting the presence of the shuttle 10 in the shuttle storage unit 11 by the shuttle detector 22 to detect an abnormality, and preventing the start of the loom, is provided. Is provided.

Specifically, when the presence of the shuttle 10 is not detected in the left and right shuttle storage sections 11, the shuttle 10 is not completely in the shuttle storage section 11, and the shuttle 10 is in a state of being protruded or a shuttle race. It is determined that the loom 12 is on the shed 14 and the shuttle loom 12 is immediately stopped to prevent collision with the pattern matching device 13. In this embodiment, the shuttle storage unit 11 is provided with shuttle state detectors 19 and 20 for detecting whether or not the shuttle 10 is inserted and whether or not the weft 2 is wound around the tube member 10a of the shuttle 10.

More specifically, a pair of optical sensors 19 and 20 are mounted on the left and right sides of the shed loom 12 in order to detect a defect in the shed that cannot be confirmed by the shuttle detector 22 and the presence or absence of the weft 2. A hole 10a 'is formed in the tube member 10a for winding the shuttle 10 and the weft 2 while being arranged at the entrance and exit of the part 11, and the falling output when entering the shuttle is counted by turning on the state where light is blocked. Then, the state of the shuttle 10 is determined based on the count number.

More specifically, when the weft 2 is sufficiently present in the shuttle 10 as shown in FIG. 5, when the shuttle 10 exits from one of the shed storage units 11, the shuttle 10 When the count 1 is recognized by blocking the light 19a once (left side in FIG. 5) 19, the shuttle 10 is configured to detect that the weft 2 is still sufficient, and then the shuttle 10 is connected to the other. Optical sensor on the entrance side when stored in shuttle storage unit 11
When the count 1 is recognized by blocking the 20 lights 20a once, the shuttle 10 is sufficiently housed in the shuttle housing 11 and configured to detect that the shuttle 10 has moved satisfactorily.
When the light sensor 20 on the entrance side recognizes that the count is 0 (when the light 20a of the light sensor 20 is continuously blocked by the shuttle 10), the shuttle 10 is sufficiently stored in the shuttle storage unit 11. It is configured to detect that it is not.

Also, as shown in FIG.
In the case where the amount of light is reduced or lost, when the shuttle 10 exits from the one
Since the light 19a passes through the hole 10a 'provided in the shuttle 10 when the count 19 is recognized twice by blocking the light 19a of the light sensor 19 on the exit side twice. It is configured to detect that the weft yarn 2 is small or missing, and then when the shuttle 10 is stored in the other shuttle storage section 11, the light on the entrance side is similar to the light sensor 19 on the exit side. When the count 2 is recognized by intercepting the light 20a of the sensor 20 twice, it is configured to detect that the shuttle 10 is sufficiently housed in the shuttle housing 11.
If the count is 0 or 1 by the optical sensor 20 on the entrance side, the shuttle 10 is sufficiently inserted into the shuttle
It is configured to detect that it is not housed in 11.

Next, a weft position measuring method according to the present embodiment will be described.

In this embodiment, as a method of measuring the position of the weft, as shown in FIG.
The CCD camera 4 monitors the weft 2 provided with the mark material 3, and detects the mark position coordinates by the image processing of the CCD camera 4 to calculate the displacement of the weft 2. .

The mark material 3 is obtained by adding activated carbon 0.0
A mixture prepared by mixing 5 to 0.1% by weight and dissolved in the same weight of water as the paste is used. In this embodiment, as shown in FIG. 7, this mark material 3 is applied to a portion corresponding to the position of the ear of the warp 1 on the weft 2 in advance and dried to prepare the weft 2 (in addition, FIG. 7).
As the mark material 3, it is possible to use a dye or a pigment that absorbs near infrared rays instead of activated carbon. ).

The CCD camera 4 employs a CCD camera 4 equipped with a polarizing filter and a lens for blocking a wavelength of about 700 nm or less, and is installed so as not to contact the loom. An incandescent light bulb 15 is set as illumination near the CCD camera 4 and above the loom.
In 14, a background plate 5 that diffuses and reflects near infrared rays is embedded in a portion corresponding to the lower end of the warp 1. This time, as the background plate 5, a stainless steel plate having a thickness of about 2 mm and a size of about 30 mm square is etched and washed, and then gold or copper or the like is deposited.

Next, a description will be given of a pattern matching method of the woven fabric by the pattern matching device 13 according to the present embodiment. This operation is performed only when it is determined that the weft 2 is to be inserted by a signal from the shuttle movement detector 23 that detects a shuttle card attached to the shuttle loom 12. Sometimes the presence or absence of the shuttle 10 in the shuttle storage 11 is detected, and the shuttle storage 11 on both sides is detected.
Of the shuttle loom 12 in the state with or without the shuttle.

First, the pattern matching device 13 is advanced (FIG. 8).
reference).

Subsequently, the weft insertion entrance side (the right side in FIGS. 8 to 12)
Is moved to the vicinity of the ear of the warp 1 on the weft insertion inlet side (see FIG. 9), and the weft insertion outlet side (FIGS. 8 to 8).
In the left side of FIG. 12), before the beating, the folded weft 2 which has been beaten is hooked and moved so that the gripping operation of the weft gripper 7 and the detecting operation of the position coordinates of the CCD camera 4 are not hindered. In order to sort the weft 2 before beating and the beaten beating 2 to be corrected for the displacement, the weft pin 6 on the weft insertion / exit side pulls the weft 2 and then opens the weft gripper 7 on the weft insertion / exit side. Then, the shuttle loom 12 is started, the weft 2 is inserted into the weft, the weft 2 is hooked on the weft pin 6 on the weft insertion entrance side and positioned, and the weft 2 is moved by the weft gripper 7 on the weft insertion exit side. Hold and position (see Figs. 10 and 11).

At this time, the position of the weft 2 and the displacement of the weft 2 are corrected in the following steps. First, on a background plate 5 that diffuses and reflects near-infrared light embedded in the shuttle race 14, a reflected image of the reflected light of 700 nm or less including the mark material 3 attached to the weft 2 is captured by the CCD camera 4, and the CCD camera 4 captures the reflected image. Image processing of camera 4 and weft 2
Then, the position coordinates of the mark material 3 attached thereto are measured to calculate the deviation from the reference position.

Subsequently, if the misalignment of the weft 2 is measured and correction is required, the position of the weft pin 6 is corrected in the direction of correcting the misalignment of the mark material 3 from the ear of the warp 1 as a pattern matching reference position. The weft gripper 7 is swung to align the weft pattern alignment mark with the ear of the warp 1.

That is, for example, when the mark material 3 attached to the weft 2 is taken in by the right CCD camera 4, for example, the mark material 3 of the weft 2 inserted into the weft 2 as shown in FIG. If it is out of the ear of
The warp 1 in FIG. 13 corresponds to the position deviation of the detected mark position coordinates.
13 is moved to the left with respect to the warp 1, the right weft gripper 7 of the warp 1 in FIG. 13 is swung to the left, and the entire weft 2 is moved to the left, so that the mark material 3 attached to the weft 2 is moved. Is aligned with the ears of the warp 1 (see FIG. 14). Thereafter, the weft pin 6 on which the weft 2 is hooked is pulled out, and the weft pin 6 and the weft gripper 7 are retracted (the table 18 is retracted). Prepare for punching (see Fig. 15). When the coordinates of the position of the weft pattern alignment mark are captured by the left CCD camera 4, it can be considered that the above operation is performed symmetrically.

Further, when the mark material 3 of the weft 2 inserted into the weft 2 as shown in FIG.
The right weft gripper 7 of the middle warp 1 is swung to the right with respect to the warp 1 (the left weft pin 6 of the warp 1 in FIG. 16 is fixed), the whole weft 2 is moved to the right, and the CCD camera is again operated. At 4, the position coordinates of the weft pattern alignment mark are fetched. At this time, as shown in FIG. 17, if the mark material 3 is outside the ears of the warp 1, the weft gripper 7 is again moved to the warp 1. The pattern matching is performed while swinging to the left (see FIG. 18).

If the coordinates of the mark position cannot be obtained within the control range even after repeating the above-mentioned operations a plurality of times or more, the apparatus is stopped and the weft 2 is corrected manually. .

Finally, as shown in FIG. 12, the weft pin 6 for hooking and positioning the weft 2 is pulled out, and the pattern matching device is used.
By retracting the shuttle 13 and activating the shuttle loom 12 again and beating, one cycle of the weft insertion operation of the weft 2 into the warp 1, the pattern matching operation of the weft 2 and the beating operation of the weft 2 is completed. Will be.

FIG. 19 shows a state before the beating of the weft 2 inserted into the warp 1, and FIG. 20 shows a state after the beating.

Since the present embodiment is constructed as described above, the conventional manufacturing method of the kasuri thread is not changed, and the pattern matching device 13 and the like are added to the existing shuttle loom 12 to obtain the conventional product. It is possible to automatically manufacture Kasuri fabrics with the same precision as those described above, or fabrics that require pattern matching, and by adding a pattern matching device 13 etc. to the wide-width shuttle loom 12, new products for Western clothing Can be developed and manufactured, and a variety of patterned fabrics can be automatically woven.

Further, in this embodiment, since the Kasuri weaving operation, which has been dependent on humans, is automated, one worker can manage a single loom from a single loom, thereby improving productivity. Be expected.

[0063]

Since the present invention is constructed as described above, it is possible to sufficiently detect a weft misalignment in a sufficient manner even in a weaving such as a cruciform pattern which requires high-precision positioning. It is a very innovative method of weft position measurement at the time of weaving.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect of the present invention, a mark prepared by mixing a substance which absorbs near-infrared rays, such as activated carbon, with a sizing agent as a marking material attached to the weft yarn. The mark material is taken into a CCD camera on a background plate that diffuses and reflects near-infrared light, and is detected by image processing to measure the position shift of the weft, so it is not affected by the color of the weft. This makes it possible to reliably detect the mark material and to detect the misalignment of the weft in a favorable manner.

According to the third and fourth aspects of the present invention, the weft pin is hooked on one side of the folded portion of the weft to be folded, and the weft gripper is positioned on the other side of the folded weft. By grasping and positioning, and by controlling the movement of the weft pin and the weft gripper by the weft control mechanism while the weft is firmly fixed by the weft pin and the weft gripper, the weft return position is corrected before beating. Since the displacement correction can be performed with high accuracy, the pattern matching can be performed very quickly and accurately.

According to a fifth aspect of the present invention, in addition to the functions and effects of the third and fourth aspects of the present invention, the beating yarn that has been beaten before the beating is hooked and moved near the weft gripper. The gripping operation of the weft gripper and C
In order not to interfere with the operation of detecting the position coordinates of the CD camera, a sorting pin is provided for sorting the weft before beating to correct the displacement and the weft after beating, so that the weft has no relation to the displacement correction. Can be reliably excluded from the displacement measurement area, and the displacement of the weft can be reliably corrected.

In the invention according to claim 6, in addition to the effects of the invention according to claims 3 to 5, the weft pins provided on both sides of the warp may function as positioning pins for the folded weft, respectively. , So that it can function as a sorting pin that sorts the pre-beating weft and the beaten weft to correct for misalignment, so that each time a weft inserted from both directions of the warp, the weft pin functions. It is a revolutionary new textile pattern matching device, such as a state in which the position of the weft can be reliably determined by changing it.

According to the seventh aspect of the present invention, in addition to the functions and effects of the sixth aspect of the present invention, it is possible to detect the weft insertion direction of the shuttle by a signal type from the shuttle detector and the shuttle movement detector. With the detection of the weft insertion direction, one weft pin can be used as a positioning pin for hooking and positioning the return position of the weft, and the other weft pin can be used in relation to a weft that requires misalignment correction. By using a sorting pin that reliably removes beaten wefts without beating from the misregistration measurement area and automatically changing their functions, weft misalignment can be corrected even more efficiently. It is a revolutionary woven pattern matching device.

Further, in the invention according to the eighth aspect, the weft return position, which has been conventionally difficult, is corrected before beating, so that a high-accuracy positional deviation can be corrected satisfactorily and quickly and accurately. This is a revolutionary new pattern matching method for textiles, for example, it can be performed automatically.

According to the ninth aspect of the present invention, by the shuttle movement control means, it is possible to always detect the existence (storage location) of the shuttle and make only the shuttle to be weft-inserted,
It is a revolutionary shuttle loom that has never been seen before, such as being able to reliably prevent abnormal operation.

In the invention according to the tenth aspect, the shuttle state detector has a function of detecting whether or not there is a weft wound around the pipe member of the shuttle in the loom for performing automatic weaving. By doing so, for example, it is possible to prevent a situation such as weft insertion even though the weft has run out.

Further, in the invention according to the eleventh aspect, it is possible to establish automation of the shuttle loom including a trouble monitoring function other than the pattern matching. It becomes a control method.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a state in which a pattern matching device and the like are mounted on a shuttle loom according to an embodiment.

FIG. 2 is a schematic operation explanatory view of the pattern matching device according to the present embodiment.

FIG. 3 is an explanatory diagram of a shuttle loom according to the embodiment.

FIG. 4 is a schematic operation explanatory view of a main part according to the present embodiment.

FIG. 5 is an explanatory diagram of a shuttle state detector according to the embodiment.

FIG. 6 is an explanatory diagram of a shuttle state detector according to the embodiment.

FIG. 7 is an explanatory diagram of a weft position measuring method according to the present embodiment.

FIG. 8 is a schematic operation explanatory view illustrating a state in which the weft is positioned by moving the pattern matching device according to the present embodiment forward.

FIG. 9 is a schematic operation explanatory diagram illustrating a state in which a weft is hooked on one weft pin and a shuttle is inserted into the shed according to the present embodiment.

FIG. 10 is a schematic operation explanatory view illustrating a state in which a weft before beating and a weft that has been beaten to be misaligned by the weft pin according to the embodiment are sorted.

FIG. 11 is a schematic diagram for explaining a state in which a weft before beating to be misaligned by a weft pin according to the present embodiment and a weft before beating are sorted, and a weft before beating is gripped and positioned by a weft gripper. It is operation | movement explanatory drawing.

FIG. 12 is a schematic operation explanatory diagram illustrating a state in which the pattern matching device according to the present embodiment is retracted so as not to interfere with beating.

FIG. 13 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 14 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 15 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 16 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 17 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 18 is a schematic operation explanatory view illustrating a pattern matching method according to the present embodiment.

FIG. 19 is an explanatory diagram showing a state before beating of a weft inserted into a warp according to the present embodiment.

FIG. 20 is an explanatory diagram showing a state after beating of the weft inserted into the warp according to the embodiment.

[Explanation of symbols]

 Reference Signs List 1 warp 2 weft 3 mark material 4 CCD camera 5 background plate 6 weft pin 7 weft gripper 8 weft control mechanism 9 heald device 10 shed 10a pipe member 11 shed storage section 19 shed state detector 20 shed state detector 22 shed detector 23 Shuttle movement detector

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasushi Takahashi 1-11-1, Stirnishi, Niigata City, Niigata Prefecture Inside the Research and Development Center, National Institute of Advanced Industrial Science and Technology (72) Inventor Koji Shichitake 1-chome, Stirnishi, Niigata City, Niigata Prefecture No. 11 No. 1 Niigata Prefectural Institute of Technology, Shimoetsu Technical Support Center F term (reference) 3B154 AB20 BA53 BB51 BB77 BC42 BD04 BD16 CA03 CA23 CA27 DA13 4L050 AA01 CB10 CB11 CB35 EA03 EA10 EB05 EC14 ED11 ED34 EE07

Claims (11)

[Claims] When manufacturing a woven fabric made of a warp and a weft, a mark material is provided at a position where the weft is turned over, the weft provided with the mark material is monitored by a CCD camera, and image processing by the CCD camera is performed. A weft position measuring method at the time of weaving, wherein a position shift of a weft is measured by detecting a mark position coordinate. 2. A mark material attached to the weft is a mark material prepared by mixing a substance that absorbs near-infrared light such as activated carbon into a glue, and is applied to the weft, and the mark material diffusely reflects near-infrared light. 2. The weft position measuring method according to claim 1, wherein the position of the weft is measured by detecting the position of the weft by capturing the image on a background plate by a CCD camera and performing image processing. 3. A weft pin which is attached to a shuttle loom and is movably provided for hooking and positioning a folded weft before beating, and also grips a folded weft before beating. A weft gripper that is gripped, opened and closed and movably provided for positioning, and a weft control mechanism for controlling the movement of the weft pin and the weft gripper.The weft control mechanism controls the movement of the weft pin and the weft gripper. A pattern matching device for a woven fabric, characterized in that the position of the folded back position of the weft is corrected before beating and pattern matching can be performed. 4. A weft pin which is attached to a shuttle loom and is movably provided for hooking and positioning a folded weft before beating, and also grips a folded weft before beating. 3. A weft gripper which is gripped, opened and closed and movably provided for positioning, and a weft control mechanism for controlling movement of the weft pin and the weft gripper, wherein the weft control mechanism according to claim 1 or 2. Based on the information obtained by the weft position measurement method during weaving, the movement of the weft pin and the weft gripper is controlled to correct the misalignment of the turn-back position of the weft before beating, so that pattern matching can be performed. Characteristic fabric pattern matching device. 5. A gripping operation of the weft gripper and a detection operation of a position coordinate of the CCD camera are not hindered by hooking and pulling the beaten weft before the beating in the vicinity of the weft gripper. 5. A pattern matching device for a woven fabric according to claim 3, further comprising a sorting pin for sorting the weft before beating and the weft after beating for correcting the positional deviation. . 6. A weft pin and a weft gripper whose movement is controlled by the weft control mechanism are provided on both sides of the warp, respectively.
When the weft pin functions as a positioning pin for positioning the one weft pin by hooking a folded weft inserted from one side of the warp, the opposite weft pin is used as a positioning weft before beating. The pattern matching device for a woven fabric according to any one of claims 3 to 5, wherein the device is configured to function as the sorting pin for sorting a beaten weft. 7. A shuttle detector that winds the weft around a tube member and recognizes the presence or absence of a shuttle in a left and right shuttle storage section that stores a shuttle inserted into the opening of a warp vertically sorted by a heald device. And a shuttle movement detector for detecting a shuttle to be inserted next, and the weft pin is changed in function by detecting the weft insertion direction of the shuttle based on a signal type from the shuttle detector and the shuttle movement detector. 7. The pattern matching device for a woven fabric according to claim 6, wherein the device is configured as follows. 8. A pattern matching method for a woven fabric, comprising: positioning a turn-back position of a weft inserted into a warp by hooking on a weft pin; and holding and positioning the turned-back weft by a weft gripper. The mark material attached to the weft is monitored with a CCD camera, the mark position coordinates are detected by the image processing of the CCD camera, the position deviation of the weft is measured, and the weft pin and the weft are determined based on the measurement result of the mark position coordinates. A pattern matching method for a woven fabric, wherein the pattern adjustment is performed by correcting the folded position of the folded weft by controlling the movement of the gripper by a weft control mechanism. 9. A shuttle movement control means for detecting the presence of a shuttle in the shuttle storage unit by a shuttle detector when the shuttle loom is started, and detecting an abnormality to prevent the start of the loom. A shuttle loom comprising the shuttle loom or the fabric pattern matching device according to any one of claims 3 to 7. 10. A shed loom characterized in that a shed loom is provided in a shed storage portion of the shed loom for detecting whether the shed is good and whether or not a weft is wound around a tube member of the shed. Or a shuttle loom provided with the textile pattern matching device according to any one of claims 3 to 7. 11. The operation of the fabric pattern matching device according to any one of claims 3 to 7 and the operation of a shuttle loom are linked with each other, and the shuttle movement control means according to claim 9 controls the shuttle operation. 11. The operation of the loom is detected by detecting the presence of a shuttle in the storage unit by a shuttle detector, and the quality of the shed is determined by the shuttle state detector according to claim 10, and the presence or absence of a weft wound around the pipe member of the shuttle. And controlling the operation of the loom.