JPH0643187Y2 - Warp supply device for three-dimensional loom - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a large number of warp yarns z1 each including a first warp yarn z1 stretched with high tension and a second warp yarn z2 stretched with low tension. , z2 are stretched in a plurality of rows and a plurality of columns, and the second plate is moved by moving the aperture plate.
With the openings of the warp threads z2 being formed, the first weft thread x and the second weft thread y are respectively arranged in the rows and columns of the warp thread groups so as to be orthogonal to the warp thread groups by the weft insertion tool. The present invention relates to a warp supplying device for a three-dimensional loom that is inserted between the three-dimensional loom and forms a loop at its tip and woven so as to fold back.

[Prior Art] A warp thread stretched in a plurality of rows and a plurality of columns, and a three component of a first weft x and a second weft y inserted in a row and a column of the warp group in a state orthogonal to the warp group. In order to weave a three-dimensional woven fabric made of yarns in a low density state and with shape retention, the first weft yarns x and the second weft yarns y are formed in the longitudinal direction of the warp (z direction).
In order to realize this, it is necessary to use two pairs of warp yarns z1 and z2 between both warp yarns z1 and z2 in order to achieve this. It is effective to weave so as to sandwich the first weft x and the second weft y.

On the other hand, when weaving a long three-dimensional fabric, if a vertical loom is used to weave the product in the vertical direction, the product length will be limited due to the installation conditions of the machine base, etc.
A horizontal loom that weaves the product horizontally is suitable.
By the way, when weaving the three-dimensional fabric and when transporting the woven three-dimensional fabric to the next step (for example, resin impregnation step),
It is necessary to hold the three-dimensional fabric so that it does not bend, and when the product is woven horizontally, it is necessary to increase the tension of the warp threads to prevent the product from bending due to its own weight. However, when the tension of the warp yarn is increased, not only the force required for opening the warp yarn is increased and the power consumption is increased, but also the manufacturing cost is increased because the strength of the device is increased.

In addition, when a large force is applied to the warp at the time of opening, the warp is damaged and the quality of the product is deteriorated.

[Problems to be Solved by the Invention] As means for solving the above-mentioned inconvenience, a set of two warp yarns is stretched with a high tension to form a first warp yarn z1 having a function of maintaining the linearity of a three-dimensional fabric. , A second warp thread Z2 for tensioning the weft threads x, y at a predetermined position of the first warp thread z1 and tensioning them with low tension.
It is conceivable to insert both wefts x and y between the warp z1 and the second warp z2 to weave a three-dimensional woven fabric. However, such a three-dimensional loom has never been known.

The object of the present invention is to weave a three-dimensional fabric using two kinds of warp threads z1 and z2, that is, a first warp thread z1 stretched with high tension and a second warp thread z2 stretched with low tension. An object of the present invention is to provide a warp supply device of a three-dimensional loom that can smoothly and continuously supply various types of warp z1 and z2.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a first warp yarn z1 stretched with high tension and a second warp yarn stretched with low tension are provided.
A warp supply beam in which z2 is wound separately is provided, and the first warp yarn z1 and the second warp yarn z2 fed from each warp supply beam are paired with each other in an arrangement corresponding to the cross-sectional shape of the three-dimensional fabric. The arranging device for arranging is arranged upstream of the opening plate for opening only the second warp yarn z2.

[Operation] The first warp yarn z1 stretched with a high tension and the second warp yarn z2 stretched with a low tension are respectively fed from separate warp supply beams as the three-dimensional fabric is woven. Both of the warp yarns z1 and z2 are independent from each other at the time when they are unwound from the warp yarn supply beam, but the cross-section of the three-dimensional fabric is formed by the arranging device arranged upstream of the opening plate that opens only the second warp yarn z2. After being arranged so as to form a pair in an arrangement corresponding to the shape, they are guided to the weaving section in which the opening plate is arranged.

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a first warp supply beam 1 wound with a high tension tensioned first warp z1 and a second warp supply beam wound with a low tension tensioned second warp z2. 2 and 2 are vertically arranged in a horizontal state. An arrangement device 4 is arranged between the two warp supply beams 1 and 2 and a weaving section having an opening plate 3 for opening only the second warp z2, and each warp z1 fed from the both warp supply beams 1 and 2 is arranged. , z2 is guided to the arrangement device 4 via the tension adjusting units 5 and 6.

The arranging device 4 arranges the warp yarns z1 and z2 fed from both warp yarn supply beams 1 and 2 so as to be paired with each other in an arrangement corresponding to the cross-sectional shape of the three-dimensional fabric, as shown in FIG. 1 large diameter guide hole 7 for guiding the warp z1,
It is composed of an array plate 9 formed in a plurality of rows and a plurality of columns in a pair with a small diameter guide hole 8 for guiding the second warp yarn z2. The array plate 9 is arranged parallel to the opening plate 3, that is, in a state orthogonal to the take-up direction of the three-dimensional fabric.

As shown in FIG. 3, the first warp supply beam 1, which is rotatably supported between frames (not shown), is driven by the drive device 10 to rotate in the forward and reverse directions. In the vicinity of the first warp supply beam 1, a pair of levers 11 forming a tension adjusting portion 5 and having a substantially L-shaped side surface are provided with a spindle 12 at the center thereof.
It is rotatably supported by. A tension roller 13 is supported at one end of the lever 11, and the first warp supply beam 1
The first warp yarn z1 pulled out from is guided to the array plate 9 through the guide roller 14 and the tension roller 13. The other end of lever 11 is an air cylinder via pin 15.
It is connected to the tip of 16 piston rods 16a. The air cylinder 16 is connected to a compressed air source (not shown) via a pipe line 17, and a predetermined pressure is constantly applied in the direction of pulling in the piston rod 16a by the action of a regulator 18 provided in the middle of the pipe line 17. Has become. Lever 11
The sensor S that detects the position of the lever 11 is located near the other end of
1, S2 are arranged, and the detection signals of the sensors S1 and S2 are the driving device 10
Is input to the control device 19 for controlling the.

The second warp supply beam 2 is also rotatably arranged between the frames and is driven by the drive device 20 to rotate forward and backward as shown in FIG. In front of the second warp supply beam 2, a pair of guide rollers 21 constituting the tension adjusting portion 6 are arranged in parallel with each other in a state of being orthogonal to the second warp z2, and a weight 22 is provided between the guide rollers 21. It is drooped in the state of being inserted in. Then, the weight 22 moves up and down corresponding to the variation of the yarn length of the second warp yarn z2 connected to the three-dimensional fabric, and the amount of the second warp yarn z2 temporarily stored between the guide rollers 21 in a bent state changes. Fluctuations in yarn length are absorbed. The second warp yarn z2 stored between the guide rollers 21 is provided at both upper and lower positions corresponding to the movement trajectory of the weight 22.
Detection sensors S3 and S4 are provided for detecting that the storage amount of has reached a preset upper limit value and a lower limit value. When both detection sensors S3, S4 detect the weight 22, the detection signal is output to the control device 19, and the control device 19 controls the drive device 20 to decrease or increase the storage amount of the second warp z2 based on the detection signal. The drive is controlled.

A measuring device 23 for measuring the outer diameter of a portion around which the second warp yarn z2 is wound is arranged near the second warp yarn supplying beam 2. The measuring device 23 is provided with an engaging roller 24a at the tip thereof, and is provided with a rocking lever which is rockable so that the engaging roller 24a is always in contact with the second warp z2 wound around the second warp supply beam 2. 24, a cylinder 25 in which a piston rod 25a is connected to the swing lever 24, and a potentiometer 26 that detects the position of the piston rod 25a.The output signal of the potentiometer 26 is input to the control device 19. ing. The control device 19 calculates the beam diameter of the portion around which the second warp yarn z2 is wound based on the signal from the potentiometer 26, and intermittently creates the three-dimensional fabric when weaving the three-dimensional fabric based on the beam diameter. The rotation amount of the second warp supply beam 2 required to send out the second warp yarn z2 in an amount equal to the take-up amount of the take-up device is calculated, and the second warp supply beam 2 is driven by the amount corresponding to that value. A drive control signal is sent to the drive unit 20. Further, a pulse signal for instructing the start of take-up is output from the take-up controller 27 that drives and controls a take-up device (not shown) to the control device 19. Next, the operation of the device configured as described above will be described. The first warp yarn z1 sent out from the first warp yarn supply beam 1 is guided to the guide hole 7 of the array plate 9 through the tension adjusting portion 5, and then reaches the three-dimensional fabric through the opening plate 3. The second warp z2 sent from the second warp supply beam 2
Is guided to the guide hole 8 of the array plate 9 through the tension adjusting portion 6, and then reaches the three-dimensional fabric through the opening plate 3. That is, the first yarns sent independently from the respective warp supply beams 1 and 2
The warp yarn z1 and the second warp yarn z2 are arranged in a pair on the arrangement plate 9 in an arrangement corresponding to the cross-sectional shape of the three-dimensional fabric, and are supplied to the weaving section.

As shown in FIG. 3, the tension adjusting portion 5 of the first warp yarn z1 is in a state where the other end of the lever 11 is arranged between the two sensors S1 and S2.
The force by which the air cylinder 16 rotates the lever 11 in the counterclockwise direction, and the tension applied to the first warp thread z1 connected to the weaving portion from the first warp thread supply beam 1 through the guide roller 14 and the tension roller 13 causes the lever 11 to move clockwise. It is in a state of balance with the force of turning to. From this state, when the first warp yarn z1 is pulled in the direction of arrow P in FIG. 3 with the weaving of the three-dimensional fabric, the lever 11 is rotated clockwise. When the lever 11 is rotated to a position corresponding to one sensor S1, the sensor S1
Detects the lever 11, and based on the detection signal, the control device 19
Outputs a drive signal to the drive device 10, and the drive device 10 is driven for a predetermined time to drive the first warp supply beam 1 to the first warp yarn.
z1 is sent out. The first warp z1 is the first warp supply beam 1
The first warp thread z1 tries to loosen by being sent out from the first warp thread z1, but since the air cylinder 16 is always in a state in which a predetermined pressure is applied in the direction of retracting the piston rod 16a, the first warp thread z1
The lever 11 is rotated in the counterclockwise direction as the yarn is fed, and the tension of the first warp yarn z1 is held constant. The pressure applied to the piston rod 16a is changed by adjusting the regulator 18 to adjust the pressure of the compressed air supplied to the air cylinder 16, and the tension of the first warp yarn z1 is maintained at a predetermined high tension corresponding to the weaving condition. To be done.

Further, at the same time when the take-up device takes up the three-dimensional fabric F by the command signal of the take-up controller 27, the second warp supply beam 2
Is rotated in the delivery direction, and the second warp yarn z2 having a length equal to the take-up amount of the three-dimensional fabric F is delivered. Further, the path of the second warp z2 from the second warp supply beam 2 to the end of the three-dimensional fabric changes in accordance with the opening operation for each weft insertion, but the change is stored between the guide rollers 21. The warp yarn z2 is absorbed by the change in the stored amount thereof, and the second warp yarn z2 is always held in a state where a substantially constant tension is applied. The control device 19 detects the second warp when one of the detection sensors S3 detects the weight 22.
In the direction of sending z2, the other detection sensor S4
Drive device in the direction to wind the second warp z2
Drive 20.

Second Embodiment Next, a second embodiment will be described with reference to FIG. In this embodiment, the second warp supply beam 2 is arranged so as to be orthogonal to the longitudinal direction of the three-dimensional fabric F, which is a great difference from the device of the above embodiment. On the upstream side of the array plate 9 in which two warp yarns z1 and z2 are arranged as a set at a position corresponding to the cross-sectional shape of the three-dimensional fabric, the first warp yarn z1 is formed in a state corresponding to the guide hole 7 of the array plate 9. An auxiliary array plate 28 having a guide hole 28a for guiding is arranged in parallel with the array plate 9. First warp
A guide hole 29a for guiding the second warp yarn z2 in a state corresponding to the guide hole 8 of the array plate 9 is formed at a position corresponding to a position between the outer array plate 9 and the auxiliary array plate 28 at the tensioned position of z1. The auxiliary array plate 29 is arranged parallel to the first warp yarn z1. The warp yarns z1 and z2 fed out from the respective warp yarn supply beams 1 and 2 are inserted into the guide holes 28a and 29a of the auxiliary arrangement plates 28 and 29, so that each of them is first arranged in the arrangement in the three-dimensional fabric, Both warps z1 and z2 are guided to the guide holes 7 and 8 of the arrangement plate 9
One set is arranged at a position corresponding to the cross-sectional shape of the three-dimensional fabric. The auxiliary array plates 28 of the warp supply beams 1 and 2 are
A tension adjusting section (not shown) similar to that of the apparatus of the above-mentioned embodiment is provided between the apparatus and the apparatus 29. With this configuration, it is possible to deal with the case where both warp supply beams 1 and 2 cannot be arranged on the extension line of the three-dimensional fabric F due to the installation position of the device.

Third Embodiment Next, a third embodiment will be described with reference to FIG. In this embodiment, a guide roller is used for the arrangement device 4, which is a great difference from the above-mentioned embodiments. A plurality of guide rollers 30 for the first warp threads z1 and a plurality of guide rollers 31 for the second warp threads z2 are arranged parallel to each other on the extension line of the weaving portion of the three-dimensional fabric. The two warp supply beams 1 and 2 are arranged at positions corresponding to the guide rollers 30 and 31 which are off the extension line of the weaving portion of the three-dimensional fabric. Auxiliary arrangement plates 28 and 29 are arranged between the warp supply beams 1 and 2 and the guide rollers 30 and 31, respectively. Further, a tension adjusting portion (not shown) is arranged between each warp supply beam 1 and 2 and the auxiliary array plates 28 and 29, as in the device of the above embodiment.
Then, each warp z fed from both warp supply beams 1 and 2
1, z2 are arranged by auxiliary arrangement plates 28, 29 in a state corresponding to a predetermined arrangement, respectively, and then bent by guide rollers 30, 31 in a direction extending parallel to the longitudinal direction of the three-dimensional woven fabric F. F is supplied to the weaving section. By configuring in this way, both warp supply beams 1, 2 are
Can be accommodated on the extension line of the three-dimensional woven fabric F, and the warp yarns z1 and z2 have guide rollers 30, 31.
Since the warp yarns z1 and z2 are bent in a predetermined direction through the warp yarns, the warp yarns z1 and z2 can be smoothly supplied without being applied to the warp yarns z1 and z2 with an excessive force.

The present invention is not limited to the above embodiments, and for example, as shown in FIG.
A plurality (two in the figure) may be used. Since the first warp yarn z1 is considerably thicker than the second warp yarn z2, if the number of yarns required for weaving is large, the required number of first warp yarns z1 should be wound around one beam having the same length as the second warp yarn supply beam 2. In some cases, it is not possible, but it is possible to easily cope with this by using a plurality of beams. Even when the width of the beam is narrower than that of the three-dimensional fabric, it is effective to use a plurality of beams. Further, in the third embodiment, the guide roller 3
The arrangement plate 9 may be arranged between the 0, 31 and the weaving section. Further, it may be applied when weaving a three-dimensional woven fabric with one set of 11 warp yarns z stretched with high tension and 22 z 22 second warp yarns stretched with low tension.

[Effect of the Invention] As described in detail above, according to the present invention, when a three-dimensional fabric is woven using warp threads z1, z2 having different tension, thickness, material, etc., each warp thread z1, z2 It can be smoothly and continuously supplied in a state corresponding to the predetermined arrangement in the original fabric.

[Brief description of drawings]

1 to 4 show the first embodiment, wherein FIG. 1 is a schematic perspective view, FIG. 2 is a front view of an array plate, and FIGS. 3 and 4 are schematic views of a tension adjusting part. FIG. 6 is a schematic perspective view of the second embodiment, FIG. 6 is a schematic perspective view of the third embodiment, FIG. 7 is a schematic perspective view of a modified example, and FIG. 8 is a set of two warps z1 and z2. It is the schematic which shows the structure of the three-dimensional woven fabric. Warp yarn supplying beams 1, 2, opening plate 3, arranging device 4, tension adjusting parts 5, 6, guide holes 7, 8, arranging plate 9, auxiliary arranging plates 28, 29, guide rollers 30, 31, first warp yarns z1, Second warp z2, three-dimensional fabric F.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiharu Yasui 2-chome Toyota Town, Kariya City, Aichi Prefecture Toyota Industries Corporation (72) Inventor Yoshio Tada 1-5 Minamihonmachi, Joetsu City, Niigata Prefecture No. Arisawa Manufacturing Co., Ltd. (72) Shinichi Shiraishi 1-5-5 Minamihonmachi, Joetsu City, Niigata Prefecture Arisawa Manufacturing Co., Ltd. (56) Reference JP-A-63-85138

Claims (1)

[Scope of utility model registration request] 1. A plurality of plural warp yarns (z1, z2) each including a first warp yarn (z1) stretched with a high tension and a second warp yarn (z2) stretched with a low tension as a set. The first weft (x) and the second weft (y) are stretched between the rows and columns of the warp group in a state where the opening of the second warp (z2) is formed by moving the opening plate. In the three-dimensional loom, which is inserted between the first warp yarn (z1) and the second warp yarn (z2) in a state orthogonal to the warp yarn group by a weft yarn inserting tool, and forms a loop at its tip to fold back and weave. First warp (z1) and second warp (z1) and second warp (z2) are separately wound, and a first warp (z1) and a second warp (z1) fed from each warp supply beam are provided.
A warp supply device for a three-dimensional loom, wherein an arrangement device for arranging the warp yarns (z2) in pairs corresponding to the shape of the three-dimensional woven fabric is provided upstream of the opening plate.