JPH11172552A - Warp tension correcting method for cloth-moving pile loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To independently set the motion timings of the reciprocating motion of a terry motion member and the reciprocating motion of a tension roll for ground weaving and add a tension correcting function of warp to both motion processes. SOLUTION: This cloth-moving pile loom 1 controls the reciprocating motion of a ground weaving tension roll 7 independently of the reciprocating motion of a terry motion member 18. The tension of warp 5 for ground weaving is corrected at least in a process to move the weaving line 11 from a loose pick position L to the fast pick position F by varying the distance between the terry motion member 18 and the ground weaving tension roll 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting warp tension in a pile forming process by a cloth moving pile loom.

[0002]

2. Description of the Related Art FIG. 1 shows a main part of a conventional cloth-movable pile loom 1. As shown in FIG. In the cloth-moving pile loom 1, two warp beams 2, 3 are arranged vertically on the rear side of the machine base. The warp 4 for forming a pile is sent out from the upper warp beam 2, passes through a tension roll 6 for pile weaving, passes through a heddle 9 and a reed 10,
Has been reached. In addition, tension roll 6 for pile weaving
In order to apply an appropriate tension to the warp yarn 4 in accordance with the movement of the weaving opening 11 in the front-rear direction and the formation of the pile, it is supported by the tension applying means 19 so as to be movable in the front-rear direction.

A warp yarn 5 for ground weaving is sent out from a lower warp beam 3, passes through a guide roll 8, a ground weave tension roll 7, and passes through a heald 9 and a reed 10, and is woven cloth 1.
The weaving mouth 11 of the third has been reached. The weft 12 inserted into the openings of the warp yarns 4 and 5 is driven into the beating position by the reeding motion of the reed 10 in a state of intersecting with the warp yarns 4 and 5. In this way, the warp yarns 4, 5 and the weft yarns 12
Is a woven fabric 13 having a pile structure. The woven fabric 13 passes through the terry motion member 18, the clothes winding roll 14, the press roll 15, and the guide roll 16, and is finally wound on the cloth winding roll 17.

The terry motion member 18 is constituted by a non-rotatable round bar or a rotatable roll, and is supported by a terry motion mechanism 20 so as to be movable in the front-rear direction. The position is set to the first pick position F which coincides with the beating position, and at the time of the loose pick, the loose pick position L is set as the forward position with the terry amount.
Is set to Similarly, the ground weave tension roll 7
The terry motion mechanism 20 is driven in the front-rear direction. The terry motion member 18 and the ground weave tension roll 7 are respectively
It is supported by a swinging shaft 23 and 24 on a loom frame or the like (not shown) so as to be movable in the front-rear direction by a swinging motion.

The swinging levers 21 and 22 are connected to connecting rods 25 and 26 and connecting pins 27 and 2 at both ends, respectively.
At 8, it is connected to one swing lever 29 at the center by a slot or the like so that the position can be adjusted. The swing lever 29 is rotatably supported on a loom frame or the like (not shown) by a support shaft 30, and is connected to the base end of the cam lever 31 by the support shaft 30. Cam lever 31
Is in contact with the contour of the cam 33 by the cam ball 32 at the tip. The cam 33 is linked to the main shaft 35 of the loom by the drive shaft 34, and rotates in synchronization with the rotation thereof.

At the time of weaving, the rotation of the cam 33 is converted into an oscillating motion by the cam lever 31, and then the oscillating lever 2 is rotated.
9, swing levers 21, 2 via connecting rods 25, 26
2 is transmitted. Therefore, the terry motion member 18
The ground weaving tension roll 7 moves in the front-rear direction of the cloth moving pile loom 1. As a result, the weaving opening 11 of the woven fabric 13 moves in the front-rear direction of the cloth-movable pile loom 1 with the movement of the woven fabric 13, and reciprocates between the first pick position F and the loose pick position L.

At the loose pick position L, since the weaving mouth 11 has advanced to the advance limit, the weft 12 is not completely beaten to the weaving mouth 11 in preparation for forming a pile. Also, at the first pick position F, since the weaving mouth 11 has receded to the retreat limit, that is, the beating position,
The weft 12 is completely beaten up to the weaving opening 11. At the time of the first pick following the loose pick, the first pick weft 12 is completely driven into the weaving opening 11 together with the loose pick weft 12, and at this time, the pile forming warp held by these wefts 12 is used. No. 4 forms a pile having a length corresponding to the terry amount, ie, the reed relief amount (the distance between the first pick position F and the loose pick position L).

[0008]

According to the above prior art, the reciprocating motion of the terry motion member 18 and the reciprocating motion of the weaving tension roll 7 are transmitted from one common drive source (the main shaft 35 of the loom). . Therefore, the respective operation timings are the same and cannot be set separately.

Therefore, the weaving tension roll 7
Moves in synchronism with the back and forth movement of the terry motion member 18, so that the distance between them always remains substantially constant during the first pick and the loose pick. It is not possible to positively correct the tension fluctuation caused by the pressure. As a result, a sufficient warp tension cannot be obtained at the time of beating, so that the driving property of the weft 12 is deteriorated and it is difficult to perform high-density weaving. Further, the excessive tension of the warps 4 and 5 at the time of opening causes a problem that the warp is apt to be broken.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to independently set the operation timing of the reciprocating motion of the terry motion member and the reciprocating motion of the ground weave tension roll, and to add a warp tension correcting function in the motion process. Thus, it is possible to perform high-quality and high-density weaving with a high operation rate.

[0011]

According to the present invention, there is provided a warp tension correcting method for a cloth movable pile loom according to the present invention, in which the reciprocating motion of a ground weaving tension roll and the reciprocating motion of a terry motion member are synchronized. In the process of moving the weaving mouth from the loose pick position to the first pick position,
The distance between the terry motion member and the ground weave tension roll is changed to correct the warp tension for the ground weave.

A warp tension correcting method for a cloth-movable pile loom according to a second aspect of the present invention is a cloth-moving pile loom in which the reciprocating motion of the ground weaving tension roll and the reciprocating motion of the terry motion member are independently controlled without synchronization. On pile looms,
In the process in which the weaving mouth moves from the loose pick position to the first pick position during one cycle, the distance between the terry motion member and the ground weave tension roll is changed in the enlargement direction in the latter half of one cycle, and The warp tension is corrected in the tension direction.

Further, according to a third aspect of the present invention, there is provided a warp tension correcting method for a cloth movable pile loom, wherein the reciprocating movement of the ground weaving tension roll and the reciprocating movement of the terry motion member are independently controlled without synchronization. In the process of moving the weaving mouth between the loose pick position and the first pick position in one cycle of the pile loom, the distance between the terry motion member and the ground weave tension roll changes in the reducing direction in the first half of one cycle Then, in the second half of one cycle, the distance between the terry motion member and the ground weaving tension roll is changed in the expanding direction to increase the warp tension for the ground warp. Corrected in the direction.

[0014]

FIG. 2 shows an example of a cloth moving pile loom 1 for carrying out the method of the present invention. The warp yarn 4 for forming a pile is sent out from the upper warp beam 2 and passes through a tension roll 6 for weaving a pile to form a heald 9.
And it passes through the reed 10 and reaches the weaving opening 11 of the woven fabric 13. The tension roll 6 is supported by a tension applying means 19 so as to be movable in the front-rear direction in order to apply an appropriate tension to the warp yarn 4.

The warp 5 for ground weaving is sent out from the lower warp beam 3, passes through a guide roll 8, a ground weave tension roll 7, passes through a heald 9 and a reed 10, and is woven.
The weaving mouth 11 of the third has been reached. These warps 4, 5
Interlaced with the weft yarn 12 inserted into the opening, the woven fabric 13 has a pile structure. The woven fabric 13 passes through the terry motion member 18, the clothes winding roll 14, the press roll 15, and the guide roll 16, and is finally wound on the cloth winding roll 17.

The terry motion member 18 is constituted by a non-rotatable bar or a rotatable roll.
It is supported by the terry motion mechanism 20 so as to be movable in the front-rear direction. At the time of the first pick, the retracted position without the terry amount, that is, the first pick position F that matches the beating position, is set, and at the time of the loose pick, there is the terry amount. Loose pick position L as forward position of
Is set to Similarly, the ground weave tension roll 7
The terry motion mechanism 20 is driven in the front-rear direction. The terry motion member 18 and the ground weave tension roll 7 are respectively
It is supported by a swinging shaft 23 and 24 on a loom frame or the like (not shown) so as to be movable in the front-rear direction by a swinging motion.

The swinging levers 21 and 22 are connected to connecting rods 25 and 26 and connecting pins 27 and 2 at both ends.
At the center, the two swinging levers 36 and 37 are connected at the center thereof in such a manner that their positions can be adjusted by their long holes or the like. One swing lever 36 is rotatably supported by a support shaft 38 with respect to a loom frame or the like (not shown).
8, it is connected to the base end of the cam lever 40.
The cam lever 40 is in contact with the contour of the cam 44 by the cam ball 42 at the tip. The other swing lever 37 is
The support shaft 39 is rotatably supported by a loom frame or the like (not shown), and is connected to the base end of the cam lever 41 by the support shaft 39. The cam lever 41 is in contact with the contour of the cam 45 by the cam ball 43 at the tip. These cams 44 and 45 are respectively connected to the drive shaft 4
6 and 47, it is interlocked with the main shaft 35 of the loom and rotates in synchronization with its rotation. As described above, the terry motion member 18 and the ground weave tension roll 7 are independently driven by the different cams 44 and 45 of the terry motion mechanism 20 without synchronization.

At the time of weaving, the rotation of the cams 44 and 45 is converted into a swinging motion by the cam levers 40 and 41 and transmitted to the swinging levers 21 and 22 via the swinging levers 36 and 37. Therefore, the terry motion member 18 and the ground weave tension roll 7 independently move in the front-rear direction without synchronization. As a result, the woven fabric 13 moves in the front-rear direction of the cloth-movable pile loom 1. For this reason, weaving mouth 1
1 reciprocates between a first pick position F and a loose pick position L. As described above, the terry motion mechanism 20 controls the rotation of the cams 44 and 45 by the swing levers 36 and 3.
The terry motion member 18 and the ground weave are moved by the rocking motion of the terry motion member 18 and the ground weave tension roll 7 in the front-rear direction. By changing the distance between the warp 5 and the tension roll 7, the tension of the warp 5 is corrected to a value suitable for forming a pile.

At the loose pick position L, the weft yarn 12 is not completely beaten to the weaving opening 11 in preparation for the pile formation. Also, the first pick position F
The weft 12 is completely beaten up to the weaving opening 11. At the time of the first pick following the loose pick, the weaving mouth 11 retreats to the beating position, and at this position, the weft 12 is
At this time, the warp 4 for forming a pile forms a pile having a length corresponding to the amount of terry (amount of reed relief).

Here, the contour shapes of the cams 44 and 45 are processed to obtain desired movements with respect to the terry motion member 18 and the ground weave tension roll 7, respectively. The roll 7 is configured to be able to reciprocate between the first pick position F and the loose pick position L at a unique timing, and to be able to stop at either position. The drive shafts 46, 4 of the cams 44, 45
7 is configured as a separate entity, but need not be, and the two cams 44, 45 are arranged on a common axis,
Power may be transmitted from the same drive source. Further, the terry motion mechanism 20 is not limited to the cam mechanism, and may be constituted by an electric motor (motor) such as a link (crank / lever) mechanism interlocked with the main shaft 35 and a servomotor synchronized with the movement of the main shaft 35. When using a motor, the motor control device detects the rotation angle of the main shaft 35 of the loom, rotates by a required amount of rotation at a predetermined operation timing, and drives the cam mechanism or the link mechanism by the rotation, or Alternatively, the swing levers 36 and 37 are directly driven.

FIGS. 3 to 6 show an example of operation timings of the terry motion member 18 for correcting the tension of the warp 5 for ground weaving and the tension roll 7 for ground weaving. In these figures, the horizontal axis represents the rotation angle of the loom, and the vertical axis represents the displacement of the terry motion member 18 and the ground weave tension roll 7. In each of the figures, the upper figure shows the displacement of the terry motion member 18, and the lower figure shows the displacement of the ground weave tension roll 7. In the lower drawing, the broken line indicates a state in which the movement of the ground weave tension roll 7 is completely synchronized with the movement of the terry motion member 18, that is, a conventional example. In these figures, the rotation angle of the loom of 0 degree corresponds to one cycle (1 rotation) of the loom between 0 degree and the next 0 degree at the beating timing.

FIG. 3 shows a 3-pile pile structure (2L-1).
F) In other words, when the number of weft yarns per unit for forming a pile is three, three cycles (three rotations) of the loom become one unit, and in one unit, the weft of the first pick is one.
Two wefts of a book and a loose pick are inserted.

In FIG. 3, the ground weave tension roll 7
(Solid line) is different from the case of displacing in synchronization with the terry motion member 18 (broken line). In the first half of one cycle between the timings a and b, the weaving tension roll 7 moves later than the terry motion member 18, so that the distance between the weaving tension roll 7 and the terry motion member 18 becomes shorter. That is, the warp 5 is corrected in the loosening direction so as not to be over-tensioned near the maximum opening. Also, 1 between timing b and c
In the second half of the cycle, reverse the weaving tension roll 7
Moves behind the terry motion member 18 earlier, so that the distance between the ground weave tension roll 7 and the terry motion member 18 becomes longer, and the tension of the warp 5 is corrected in the tension direction. Hereinafter, the tension of the warp 5 is
Loosened between timing c and d, stretched between d and e,
The slack between e and f and the tension between f and g are compensated for the tension of the conventional example. In addition, from timing e to g
The tension of the warp yarn 5 is corrected during a series of operations of the ground weave tension roll 7 without using any special device even though the terry motion member 18 is stopped.

FIG. 4 shows a four weft pile structure (2L-2F).
In this case, four cycles of the loom become one unit, and in one unit, two wefts of the first pick and two wefts of the loose pick are inserted. FIG. 5 also shows a case of a four weft pile structure, in which case, in one unit, one weft of the first pick and three wefts of the loose pick are inserted. FIG. 6 shows a 5-pile pile structure (3L-2
In the case of F), five cycles of the loom become one unit, and in one unit, two wefts of the first pick and three wefts of the loose pick are inserted. 4, 5, and 6, the tension of the warp yarn 5 for ground weaving is corrected with respect to the conventional example (broken line).

In the above specific example, the tension of the warp 5 for ground weaving can be corrected over all the cycles of the loom, but this is applied only to a part of the cycle or a part of the timing period of the loom. Is also good. For example, in order to achieve the purpose of sufficiently improving the driving performance by sufficiently increasing the tension of the warp yarn 5 at the time of beating at the time of the first pick, at least the timing between the timings b and c in FIGS. It is only necessary to carry out between b and e.

In the above embodiment, the displacement of the terry motion member 18 is changed to the conventional one, and the displacement of the weaving tension roll 7 is changed. Member 18
May be given a characteristic. Alternatively, the combination of the two may be switched every certain period, but in any case, the displacement of the terry motion member 18 and the displacement of the ground weave tension roll 7 are relatively reduced at a predetermined timing, and the tension is loosened and the tensioning direction is changed. Can be provided with a difference.

[0027]

According to the present invention, the operation timing of the reciprocating motion of the terry motion member and the reciprocating motion of the ground weaving tension roll are set independently, and in the course of these movements, the terry motion member and the ground weaving tension are set. By adjusting the distance between the rolls, it is possible to compensate for changes in the warp tension caused by pile formation and warp shedding motion. Is possible.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a conventional cloth-movable pile loom.

FIG. 2 is a side view of a main part of the cloth moving pile loom according to the present invention.

FIG. 3 is a graph showing displacement of a terry motion member and a ground weave tension roll with respect to a rotation angle of a loom in a three-pile pile structure.

FIG. 4 is a graph showing displacement of a terry motion member and a ground weave tension roll with respect to a rotation angle of a loom in a four-pile pile structure.

FIG. 5 is a graph showing displacement of a terry motion member and a ground weave tension roll with respect to a rotation angle of a loom in a four weft pile structure.

FIG. 6 is a graph showing displacements of a terry motion member and a ground weave tension roll with respect to a rotation angle of a loom in a 5-weft pile structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cloth movable pile loom 5 Warp 7 Ground weave tension roll 11 Weaving mouth 13 Woven fabric 18 Terry motion member 20 Terry motion mechanism

Claims (3)

[Claims] 1. A cloth moving pile loom for independently controlling the reciprocating motion of a ground weave tension roll and the reciprocating motion of a terry motion member without synchronizing, wherein at least a weaving port moves from a loose pick position to a first pick position. 2. The warp tension correcting method for a cloth moving pile loom according to claim 1, wherein a distance between the terry motion member and the ground weaving tension roll is changed to correct the warp tension for the ground weaving. 2. A cloth moving pile loom that independently controls the reciprocating motion of a ground weave tension roll and the terry motion member without synchronizing, wherein the weaving port moves from a loose pick position to a first pick position in one cycle. In the process of moving, the fabric is characterized in that in the latter half of one cycle, the distance between the terry motion member and the ground weave tension roll is changed in the direction of enlargement to correct the tension of the warp for ground weave in the direction of tension. Warp tension correction method for mobile pile loom. 3. A cloth moving pile loom which independently controls the reciprocating motion of the ground weave tension roll and the reciprocating motion of the terry motion member without synchronizing with each other. In the first half of one cycle, the distance between the terry motion member and the ground weave tension roll is changed in the reduction direction to correct the tension of the ground warp in the loosening direction, and the second half of one cycle. A warp tension correcting method for a cloth moving pile loom, wherein the distance between a terry motion member and a ground weaving tension roll is changed in an expanding direction to correct the warp tension for the ground weaving in the stretching direction. .