JPH07133558A - Weft yarn processing in pile fabric loom - Google Patents

Abstract

PURPOSE:To prevent the incomplete inserted weft yarn as a defect in the product fabric from being left. CONSTITUTION:The expansion bar 6 guiding the woven fabric performs terry motion by actuation of the servo motor. The loom-controlling computer C0 judges an incompletely inserted weft yarn whether to be fast-pick or loose-pick on the basis of the pile-looming pattern. When an incompletely inserted weft yarn is the fast-pick following the loose-pick, the computer C0 allows the wefting unit not to perform the wefting operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft processing method in a pile loom for forming a pile by changing the relative distance between the reed position of the reed and the front position of the woven cloth.

[0002]

2. Description of the Related Art A weft processing method when a weft insertion failure occurs in a pile loom is disclosed in JP-A-64-85352. In this conventional method, when the weft insertion defective weft is the loose pick weft, the defective weft removing device is operated to remove only the weft insertion defective weft from the cloth cloth, and when the defective weft is the first pick weft, the defective weft removing device Is operated to remove the defective weft yarn and the two loose pick weft yarns before it. When the first pick weft is removed from the cloth fell, the frontmost pile is removed, and even if the weaving is restarted from the weft insertion of the first pick weft, the pile cannot be formed at the portion where the pile is removed. For this reason, when the first pick weft having a poor weft insertion is removed, it is necessary to remove the two loose pick wefts before that and restart the weaving from the weft insertion of the loose pick weft.

[0003]

In order to carry out the above-described defective weft removing treatment, a defective weft yarn which can be beaten before weaving and which can remove the weft yarn cut and separated from the main weft inserting nozzle. Removal equipment is required. As a defective weft removing device of this type, it is necessary to use a removing device using air jet disclosed in Japanese Patent Publication No. 56-27621 or a removing device using a claw member disclosed in Japanese Patent Laid-Open No. 58-220856. There is. However, when the far pick weft causes a weft insertion failure, the two loose pick wefts before that have been entangled strongly between the upper and lower warps by a plurality of reeds, so that the defective weft of the air jet method or the claw member method is used. There is a possibility that the removal process will fail in the removal device. If the weft removing process fails, cloth defects remain and the quality of the fabric deteriorates.

It is an object of the present invention to provide a weft processing method for a pile loom which can reliably eliminate a cloth defect caused by a weft insertion defect.

[0005]

Therefore, according to the present invention,
Weft processing that changes the relative distance between the beating position of the reed and the cloth fell position to form a pile, and removes the weft defectively beaten on the cloth fell from the warp opening The present invention is directed to a pile loom provided with a weft processing device that operates, and in the case of occurrence of a weft insertion defect other than a case where the first pick weft following the loose pick weft causes a weft insertion defect. Only the weft processing operation of the weft processing apparatus is performed to remove the weft-insertion defective weft.

According to the second aspect of the invention, when the loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing device is performed to remove the defective weft insertion weft, and then the weaving is automatically restarted. However, when the first pick weft following the loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing apparatus is performed, and automatic restart of weaving is prohibited.

According to the third aspect of the invention, when the loose pick weft has a weft insertion failure, the weft processing operation of the weft processing device is performed to remove the defective weft insertion weft, and then the weaving is automatically restarted. However, if the first pick weft following the loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing device is performed, automatic resumption of weaving is prohibited, and the work to be performed by the operator. Is displayed.

[0008]

According to the invention described in claim 1, when the first pick weft following the loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing device is prohibited. That is, the weft processing is left to the processing work of the operator.

According to the second aspect of the invention, the weft processing operation of the weft processing apparatus is performed even when the first pick weft following the loose pick weft has a weft insertion failure. When the weft insertion failure weft is removed, the pile formed immediately before is removed. The removal process of the loose pick weft yarn before the first pick is left to the processing work of the operator.

According to the third aspect of the invention, the contents of the work of removing the loose pick weft before the first pick, which is left to the processing work of the worker, are displayed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a jet loom will be described below with reference to FIGS.

FIG. 1 shows the side surface of the entire loom, and 1 is a warp beam for weaving. The ground warp T fed from the warp beam 1 for plain weave by the operation of a feed motor (not shown)
Is passed through the heddle 4 and the deformed reed 5 through the back roller 2 and the tension roller 3. The woven cloth W is passed through the expansion bar 6, which is a terry motion member, the surface roller 7, and the guide rollers 8 and 9, and the cross roller 1
It is wound up to 0.

A warp beam 11 for piles is supported above the warp beam 1 for plain weave. The pile warp yarn Tp sent out from the pile warp beam 11 by the operation of a sending motor (not shown) is passed through the heddle 4 and the deformed reed 5 through the tension roller 12.

A three-pronged intermediate lever 13 is provided at the center of the front and rear of the loom so as to be rotatable about a support shaft 13a.
A support lever 14 is arranged at the rear of the loom so as to be rotatable around a support shaft 14a, and a tension roller 12 is supported by the support lever 14. The support lever 14 and the intermediate lever 13 are connected by a rod 15. A support lever 16 is provided at the front of the loom so as to be rotatable around a support shaft 16a, and the expansion lever 6 is supported by the support lever 16. The support lever 16 and the intermediate lever 13 are connected by a rod 17.

A positive cam type terry motion cam 20 and a worm wheel 21 are fixed to the drive shaft 19 above the intermediate lever 13. A servo motor 22 is arranged near the drive shaft 19 and the drive worm 22
a meshes with the worm wheel 21. The servo motor 22 rotates in one direction, and the terry motion cam 20 rotates in one direction. Servo motor 22 is subjected to operation control of the control computer C _1, the control computer C ₁ operates controls the servo motor 22 on the basis of the pile weave pattern.

This embodiment is premised on the weaving of the three weft towel design shown in FIG. Y ₁ is a first pick weft, and Y ₂ and Y ₃ are loose pick wefts. P indicates a beating position.

A cam lever 23 is swingably supported by a support shaft 23a immediately above the drive shaft 19. The cam lever 23 is engaged with the terry motion cam 20 via cam followers 23b and 23c. A bifurcated displacement direction conversion lever 24 is disposed laterally of the cam lever 23 so as to be rotatable around a support shaft 24a. Displacement direction change lever 2
4 and the cam lever 23 are connected by a link 25. The displacement direction changing lever 24 and the intermediate lever 13 are connected by a rod 26. Therefore, the swing displacement of the cam lever 23 accompanying the rotation of the terry motion cam 20 is transmitted to the expansion bar 6 via the link 25, the displacement direction conversion lever 24, the rod 26, the intermediate lever 13, the rod 17 and the support lever 16. Due to this displacement transmission, the expansion bar 6 is rotationally displaced about the support shaft 16a. The swing displacement of the cam lever 23 is transmitted to the tension roller 12 via the intermediate lever 13, the rod 15 and the support lever 14. By this displacement transmission, the support levers 14 and 16 rotate in the same direction, and the tension roller 12 and the expansion bar 6 are displaced in the same direction by the same amount. Therefore, the path of the pile warp threads Tp and the path of the woven cloth W are displaced, and the cloth fell W ₁ of the woven cloth W is displaced.

A weft processing device 27 is installed on the side of the cloth fell W ₁ of the woven cloth W. A weft processing device 2 based on FIG.
7 will be described. A weft-insertion prevention nozzle 29 is installed directly below the weft-insertion main nozzle 28, and a weft-introducing duct 30 is installed directly above it. Weft introduction duct 3
A suction pipe 31 is installed behind the 0 exit,
The outlet side of the suction pipe 31 is curved toward a dust box (not shown), and a blow nozzle 32 is connected to this curved portion.

The weft insertion main nozzle 28, the weft insertion prevention nozzle 29, the weft introduction duct 30, and the suction pipe 31 are all mounted on a sley, and they integrally swing as the sley swings. Each of these members 28, 29, 3
A weft take-up motor 33 is provided in the rear of the swing region of 0, 31.
Is installed, and an air cylinder 34 is installed above it. A drive roller 35 is operatively connected to the weft take-up motor 33, and a driven roller 36 is attached to a drive rod of the air cylinder 34. The driven roller 36 is pressed against the drive roller 35 by the protruding operation of the air cylinder 34.

A limit switch type weft yarn detector 37 is attached to the drive rod of the air cylinder 34.
The detection needle 37a of the weft yarn detector 37 sweeps through the region between the weft yarn introduction duct 30 and the suction pipe 31 as the air cylinder 34 projects.

The nozzles 28, 29, 32 are all connected to a pressure air supply tank (not shown) via two-way valve type electromagnetic valves V ₁ , V ₂ , V ₃ . The air cylinder 34 is connected to the pressurized air supply tank via a three-way valve type electromagnetic valve V ₄ . Weft insertion main nozzle 2
An electromagnetic cutter 38 is arranged between the injection port 8 and the inlet of the weft introduction duct 29. An electromagnetic cutter 39 is arranged near the side of the cloth fell W ₁ . The electromagnetic cutter 39 cuts and separates the repulsed weft yarn from the weft-insertion main nozzle 28 every weft-insertion cycle.

Electromagnetic cutter constituting the weft processing device 27
38, solenoid valve V₂~ V_FourAnd weft take-up motor 3
3 is an electromagnetic valve V₁Loom control with electromagnetic cutter 39
Computer C₀Subject to command control. That is, weft processing
The processing device 27 is a loom control computer C.₀Operation control
Kick Loom control computer C₀Pile woven pattern
Is preset and set, and the loom control computer C₀
Is the control computer C ₁Send the pile weave pattern to
It

A weft detector 40 is installed on the weft inserting end side, and when weft insertion is normally performed, the tip of the weft Y reaches the installation position of the weft detector 40. If the weft detector 40 does not detect the weft within the predetermined period of one weft insertion cycle, the weaving machine control computer C ₀ determines that the weft insertion is abnormal, and controls the weaving machine drive motor M and the electromagnetic valve V ₁ for excitation and demagnetization. The opening / closing control of the electromagnetic cutter 39 is stopped. The machine stand stops at the crank angle position immediately before the beating. The defective weft yarn Y ₀ is woven into the cloth fell W ₁ of the woven fabric W as shown in FIG. The loom drive motor M reverses a predetermined amount after stopping. By this reversal, the maximum opening of the warp is formed.

FIG. 4 is a flow chart showing a weft processing program when a weft insertion error occurs, and the loom control computer C ₀ carries out the weft processing according to this program.
When the weft insertion error is detected, the loom control computer C ₀ determines whether the defective weft Y ₀ shown in FIG. 3 is the fast pick Y ₁ , the loose pick Y ₂ , or Y ₃ based on a preset pile weave pattern. Is determined.

The defective weft Y ₀ is loose pick weft Y ₂ , Y
_In any case of ₃ , the loom control computer C ₀ controls the weft processing operation of the weft processing device 27. First, the electromagnetic valves V ₂ and V ₃ are excited. Electromagnetic valve V ₂
The weft-insertion-preventing nozzle 29 ejects when the magnetic field is excited, and the blow nozzle 32 ejects when the electromagnetic valve V ₃ is excited. The weft inserting main nozzle 28 is a weft Y that follows the defective weft Y _0.
Inject f for 1 pick and stop the injection. The trailing weft Yf is introduced into the weft introduction duct 30 by the jetting action of the weft insertion prevention nozzle 29.

The crank angle position when the warp yarn is at the maximum opening state is the angular position where the sley retracts to the last retracted position, and the region between the weft yarn introducing duct 30 and the suction pipe 31 is the gripping region of the rollers 35 and 36. Overlap. The succeeding weft yarn Yf passes through the gripping regions of the rollers 35 and 36 and reaches the inside of the suction pipe 31. Next, the air cylinder 34 is projected by the excitation of the electromagnetic valve V ₄ , and the driven roller 36 is brought into pressure contact with the drive roller 35. By this pressure contact, the succeeding weft Yf is clamped between the rollers 35 and 36.

The jet of the blow nozzle 32 acts on the succeeding weft yarn Yf in the suction pipe 31, and the rollers 35 and 36.
Tension is applied to the succeeding weft yarn Yf between the suction pipe 31 and the suction pipe 31. The detection needle 37a of the weft detector 37 contacts the tensioned subsequent weft Yf, and the weft detector 37 is turned on.
To do. When the weft yarn detector 37 is turned on, the electromagnetic valve V ₂ is demagnetized and the weft insertion preventing nozzle 29 stops jetting. Then, the electromagnetic cutter 39 is operated, and the succeeding weft Yf is cut and separated between the jet port of the weft insertion main nozzle 28 and the inlet of the weft introduction duct 30.

After the operation of the electromagnetic cutter 39, the weft take-up motor 33 is operated. The succeeding weft yarn Yf cut and separated from the weft insertion main nozzle 28 is the weft take-up motor 33.
Is taken to the suction pipe 31 side. Due to this take-up action, the defective weft yarn Y ₀ is also pulled out from the warp yarn opening. All defective weft yarns Y ₀ are rollers 35,
When the weft yarn detector 37 passes through the gripping region of 36, the weft yarn detector 37 is turned off. The loom control computer C ₀ commands the operation stop of the weft thread take-up motor 33 and the demagnetization of the electromagnetic valves V ₄ and V ₃ based on the yarn non-detection. After the rollers 35 and 36 are separated and the blow nozzle 32 is stopped, the loom control computer C ₀ reverses the loom drive motor M to move the machine base to a crank angle position suitable for resuming weaving, and then resumes weaving. .

Since the loose pick weft Y ₃ (or Y ₂ ) which is the defective weft is pulled out and removed from the warp opening with the succeeding weft Yf as a clue, the loose pick weft Y ₃ (or Y ₂ ) which is the defective weft is clothed. It does not remain as a drawback.

Defective weft Y₀Is the first pick weft Y₁
Loom control computer C₀Is a weft processor
The alarm device 41 is activated without performing the weft processing operation control of 27.
Move. That is, the weft processing operation and manufacturing of the weft processing device 27
Automatic restart of weaving is prohibited. By the alarm of the alarm device 41
The worker has a defective weft Y₀, And loose pick weft before it
Y₃, Y₂Woori W₁Remove from. This removal process
After that, the start switch 42 is turned on and the weaving is restarted.
It Therefore, the defective weft Y₀, Loose pick weft Y ₃, Y
₂Is reliably removed from the warp shed and
It does not remain.

[0031] To keep up the opening state shed removable defective weft Y ₀ from the cloth fell W ₁ in the case of the weft insertion failure has occurred in the present embodiment, the removal process by manual operations of the defective weft Y ₀ Is also easy.

The present invention is, of course, not limited to the above-mentioned embodiment, and for example, in the case of weaving the four weft towel design shown in FIG. 6, an embodiment for executing the weft processing program shown in FIG. 7 is also possible. is there. In FIG. 6, Y ₁₁ indicates the first fast pick weft, and Y ₁₂ indicates the second far pick pick weft. Y ₂ and Y ₃ are loose pick wefts.

When the defective weft Y ₀ is the first fast pick weft Y ₁₁ , the weaving machine control computer C ₀ does not execute the weft processing operation control of the weft processor 27, but the first fast pick weft Y ₁₁ Loose pick weft Y ₃ , Y
The removal process of ₂ is left to the removal process work of the worker.

When the defective weft Y ₀ is the second fast pick weft Y ₁₂ , the loom control computer C ₀ controls the weft processing operation of the weft processing device 27, and the second fast pick weft Y ₁₂ which is the defective weft. The weft processing operation of the weft processing device 27 removes the warp from the inside of the warp opening. After the removal process of the second first pick weft yarn Y ₁₂ , weaving is automatically restarted. In the case of the four weft towel design, even if the second fast pick weft Y ₁₂ is removed from the cloth fell W _1, no pile loss occurs.

Defective weft Y ₀ is loose pick weft Y ₂ , Y
_{When the number is 3} , the weft processing device 27 is the same as in the above embodiment.
And the weaving is automatically restarted.
Further, the present invention can also be applied to the embodiment shown in FIG. In this embodiment, even when the defective weft Y ₀ is the first pick weft Y ₁ following the loose pick weft Y ₃ , the weft processing device 27 is also used.
However, the automatic restart of weaving is prohibited. If the first pick Y ₁ is removed by the weft processing device 27, only _two loose pick wefts Y ₂ and Y ₃ are removed by the operator, so that the operator can easily perform the removal processing.

Further, the present invention can be applied to the case where the cut piece y of the weft which has caused the breakage of the trunk as shown in FIG. 9 is removed by the weft processing device 27A installed on the weft inserting end side. The weft yarn detector 43 is for detecting a broken body, and the weft yarn detector 43 detects a cut piece y of the weft yarn causing the broken body. When the weft yarn detector 43 detects a cylinder break, the air cylinder 44 is activated, the driven roller 45 is pressed against the drive roller 46, and the cutting piece y is sandwiched between the rollers 45, 46. The drive roller 46 is rotated by the operation of the weft thread take-up motor 47, and the rollers 45 and 46 take up the cutting piece y. The cut piece y thus taken is sucked and removed by the blower 48,
When the weft yarn detector 43 no longer detects the cut piece y, the rollers 45 and 46 are separated from each other. In the case where the first pick weft following the loose pick weft is broken, the weft processing device 27A performs the weft processing operation, and the weft processing device 27A does not perform the weft processing operation. Also in the control, automatic restart of weaving is prohibited.

Further, the present invention can be applied to the embodiments shown in FIGS. 10 and 11. In this embodiment, the weft processing device 27 is operated regardless of whether the weft having a three-weft towel design or a four-weft towel design is weaved, and whether the weft yarn having a weft insertion error is a loose pick weft yarn or a fast pick weft yarn. In this embodiment, both the first pick weft with a three weft towel design and the first fast pick weft with a four weft towel design are referred to as a first fast pick weft. In addition, the loose pick weft Y ₂ of each of the above-described embodiments will be referred to as a first loose pick weft, and the loose pick weft Y ₃ will be referred to as a second loose pick weft.

When the defective weft yarn Y ₀ is not the first fast pick weft yarn, the weaving machine control computer C ₀ automatically resumes weaving after the operation of the weft yarn processing device 27. The loom control computer C ₀ if defective weft Y ₀ is the first fast-pick wefts alarm after actuation of the weft processing apparatus 27 4
1 is activated, and the display device 49 is instructed to display "Please drive from the first loose pick". Based on this display, the operator removes the second loose pick weft and the first loose pick weft from the warp shed.
By performing such a display, the operator can grasp the cause of the weaving stop and the work content to be performed.
Forgetting to remove the loose pick weft and the first loose pick weft from within the warp shed is prevented.

[0039]

As described above in detail, the weft processing operation of the weft processing device is performed only when a weft insertion failure occurs other than when the first pick weft thread following the loose pick weft thread causes a weft insertion failure. The invention in which the weft-insertion-defective weft is removed has an excellent effect that the loose-pick weft before the fast-pick weft-defective weft-insertion can be prevented from remaining as a cloth defect.

When the first pick weft following the loose pick weft causes the weft insertion failure, the weft processing operation of the weft processing apparatus is executed. However, even in the invention in which automatic resumption of weaving is prohibited, the weft insertion failure occurs. It has an excellent effect that the loose pick weft yarn before the first pick weft yarn can be prevented from remaining as a cloth defect.

In the invention for displaying the work content to be performed by the operator when the first pick weft following the loose pick weft causes a weft insertion failure, the loose pick weft in front of the poorly picked first pick weft is removed. Forgetting is prevented.

[Brief description of drawings]

FIG. 1 is a side view of the entire loom.

FIG. 2 is a side view showing a weft processing device.

FIG. 3 is a side view showing a weft processing operation of the weft processing apparatus.

FIG. 4 is a flowchart showing a weft processing program.

FIG. 5 is a cross-sectional view showing a three-weft towel structure.

FIG. 6 is a cross-sectional view showing a four-weft towel structure.

FIG. 7 is a flowchart showing another example of a weft processing program.

FIG. 8 is a flowchart showing another example of a weft processing program.

FIG. 9 is a front view showing a weft processing device of another example.

FIG. 10 is a side view of the entire loom showing another example.

FIG. 11 is a flowchart showing a weft processing program.

[Explanation of symbols]

27, 27A ... Weft processing device, 49 ... Display device, Y ₁ ,
Y _11, Y ₁₂ ... first pick weft, Y _2, Y ₃ ... loose-pick weft yarn, Y ₀ ... defective weft, C ₀ ... loom control computer.

Front page continued (72) Masao Shiraki, 2-chome, Toyota-cho, Kariya city, Aichi prefecture, Toyota Industries Corporation (72) Inventor, Isaichi Suzuki, 2-chome, Toyota-cho, Kariya city, Aichi prefecture In the automatic loom mill (72) Inventor Atsushiro Miyake 95-2 Kumanosho Chocho, Shikatsu-cho, Nishikasugai-gun, Aichi

Claims (3)

[Claims] 1. A pile is formed by changing a relative distance between a reed beating position of a reed and a cloth fell position, and a weft yarn having a poor weft insertion that is beaten at the cloth fell is introduced from within the warp shed. In a pile loom equipped with a weft processing device that performs a weft processing operation for removal processing, only when a weft insertion failure occurs other than a case where a first pick weft thread following a loose pick weft thread causes a weft insertion failure, A weft processing method for a pile loom, which carries out a weft processing operation to remove a weft insertion defect weft. 2. A pile is formed by changing a relative distance between a beating position of a reed and a cloth fell position, and a weft yarn improperly weft-inserted from the warp shed is beaten at the cloth fell. In a pile loom equipped with a weft processing device that performs a weft processing operation for removing processing, when a loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing apparatus is performed to remove a weft insertion defect weft processing. After that, the weaving is automatically restarted, and when the first pick weft following the loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing device is performed, and the automatic restart of weaving is prohibited. Processing method. 3. A pile is formed by changing the relative distance between the beating position of the reed and the front position of the woven fabric, and the weft which is not properly inserted into the weft of the woven fabric from the warp shed In a pile loom equipped with a weft processing device that performs a weft processing operation for removing processing, when a loose pick weft causes a weft insertion failure, the weft processing operation of the weft processing apparatus is performed to remove a weft insertion defect weft processing. After that, the weaving is automatically restarted, and when the first pick weft following the loose pick weft causes weft insertion failure, the weft processing operation of the weft processing device is performed, and the automatic restart of weaving is prohibited and the operator Weft processing method for pile weaving machines that displays the details of the work to be performed.