JPH06271158A - Automatic fabric winding/exchanging device - Google Patents

Abstract

PURPOSE:To accurately carry out the winding of a fabric end to a cross roll with a reliable action. CONSTITUTION:A winding auxiliary member 19 for winding a fabric end of a woven fabric 10 around an empty cross roll 8 is provided. And a rotating body 22 for touching the woven fabric 10 and rotating with the movement of the fabric end and a rotational amount detecting unit 28 for detecting the rotational amount of the rotating body 22 are provided. Moreover, a winding controller 26 for controlling the operation of the winding auxiliary member 19 on the basis of the rotational amount detected by the rotational amount detecting unit 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, after the cloth roll for winding the woven fabric sent from the loom is fully wound,
The present invention relates to an automatic cloth change device that removes the fully wound cross roll and automatically attaches an empty cross roll to the cloth winding device to start cloth winding.

[0002]

2. Description of the Related Art Woven fabric sent from a loom is wound on a cloth roll, and after the cloth roll is fully wound, the fully wound cloth roll is removed and an empty cloth roll is automatically mounted on a cloth winding device. An automatic cloth changing device for starting cloth winding is disclosed in Japanese Patent Laid-Open No. 2-33354. When the empty cloth roll is mounted on the cloth winding device, this automatic cloth changing device controls the rotation and stop of the arm supporting the empty cloth roll based on the weaving speed calculated from the rotational speed of the loom and the weft density. It is something that is done.
Then, after the arm supporting the empty cross roller stops at a predetermined position, a predetermined operation of the winding auxiliary member for winding the cloth end around the empty cross roll is performed.

[0003]

Generally, when replacing a cross roll, tension is applied to the woven cloth by stopping or reversing the driving roller of the cloth winding device when cutting the woven cloth while continuing weaving, and in that state. Since the cutting was performed, the slack was generated in the woven cloth on the upstream side from the stopped driven roller in the traveling direction of the woven cloth during the cutting period. For this reason,
After cutting the woven cloth, the drive roller is rotated to start winding the woven cloth around the cloth roll, and the cloth roll rotates at high speed until the slack is wound up. When the winding of the slack is completed, the rotation speed of the cross roll matches the weaving speed. Therefore, when the winding auxiliary member is controlled on the basis of the weaving speed while the slack of the woven fabric is generated, as in the above-described automatic cloth changer of the related art, the rotation of the cross roll at the beginning of the winding is fast and the cross roll is fast. There was a problem that the cloth edge could not be wound properly.

The present invention has been made in view of the above-mentioned problems of the prior art, and provides an automatic cloth change device capable of accurately winding a woven cloth on a cloth roll with a reliable operation. With the goal.

[0005]

According to the present invention, there is provided a winding auxiliary member for winding the cloth end of a woven cloth around an empty cloth roll, and the rotating means is in contact with the woven cloth and rotates with the movement of the cloth end. A body, a rotation amount detector for detecting the rotation amount of the rotating body, and a winding control device for controlling the operation of the winding auxiliary member based on the rotation amount detected by the rotation amount detector. It is a device.

[0006]

According to the automatic cloth winding device of the present invention, when the cloth roll is replaced, the winding auxiliary member that winds the cloth end around the empty cloth roll is rotated according to the moving speed of the cloth end of the woven cloth. Since it is controlled, the winding auxiliary member can be accurately controlled according to the actual movement amount of the cloth edge.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of the present invention. The automatic cloth changer of this embodiment is used for a so-called contact winding type cloth winding apparatus, and is a woven cloth 10 woven by a loom not shown. However, after being wound around the winding roller 12, it passes through the guide roller 14 and is wound by a predetermined amount on the cross roll 18 provided in the cloth winding device 16.

As shown in FIG. 1, the cloth winding device 16 includes a drive roller 2 which is a rotating body rotated by a drive motor 20.
1 and a driven roller 2 which is a rotatably provided rotating body
2 and 2 are mounted parallel to each other. The drive roller 21 and the driven roller 22 support the side surface of the cross roll 18 around which the woven fabric 10 is wound and are driven to rotate. In addition, the drive roller 21 of the cloth winding device 16
Between the driven roller 22 and the driven roller 22, in order to reliably wind the woven cloth 10 around the cloth roll 18 at the beginning of winding the cloth end of the woven cloth 10, according to the curvature of the shaft of the cross roll 18, A cross guide 24 is provided in the vicinity of the cross roll 18 at a predetermined interval.

A placing member 23 for placing the fully wound cross roll 17 is provided on the side of the driven roller 22, and a cutter for cutting the cloth 10 between the driven roller 22 and the placing member 23. 25 and the woven fabric 10 cut by jetting air
Is provided with a front nozzle 27 that is a winding auxiliary member that blows the cloth edge of the cloth onto the empty cross roll 18 side.
Further, on the drive roller 21 side of the cloth winding device 16, a cloth pushing member 19 that is a winding auxiliary member that presses the cloth end between the driving roller 21 and the cross roll 18 is attached. The cloth pushing member 19 is swingably provided around the swing shaft 30, and an air cylinder 32 for swinging the pushing member 19 is attached. further,
At the tip of the pushing member 19, the cloth end is driven by the drive roller 21.
Insertion plate 34 to be inserted between the roller and the cross roll 18
And a rear nozzle 36 that sprays air to blow the cloth edge toward between the drive roller 21 and the cross roll 18.

The drive motor 20 is also connected to a loom controller that outputs a drive signal via an amplifier (not shown). Then, the fully wound cross roll 17 is transferred to the cloth winding device 16, and the empty cross roll 18 is moved to the drive roller 21.
A winding control device is provided for automatically placing and changing the cloth winding between the driven roller 22 and the driven roller 22, and for winding the cloth edge of the woven cloth around the cross roll. The winding control device 26 is provided with a rotary encoder 28, which is a rotation amount detector for detecting the rotation amount of the driven roller 22, coaxially with the driven roller 22, and a signal obtained by the rotary encoder 28 is sent to the counter 40. You are typing.

The output of the counter 40 is the comparators 41 and 4
Input to 2 and 43 respectively. An output of a threshold value setting unit 44 that outputs a threshold value for setting the injection stop timing of the front nozzle 27 is input to the comparator 41, and the output of the comparator 41 is a reset terminal of the flip-flop 45. It is connected to the. The drive signal of the drive roller 20 is input to the set terminal of the flip-flop 45,
The output of the flip-flop 45 is connected via a driver 46 to a solenoid valve 47 that opens and closes the front nozzle 27. Further, the comparator 42 includes a threshold value setting device 4 for setting forward movement timing and backward movement timing of the air cylinder 32.
The outputs of 8 and 49 are input respectively. The output of the comparator 42 is output via the driver 49 to the air cylinder 32.
Is connected to a solenoid valve 50 for activating. Further, the output of the threshold value setting device 51 that sets the injection stop timing of the rear nozzle 36 is input to the comparator 43, and the output of the comparator 43 is input to the reset terminal of the flip-flop 52. The output of the comparator 42 is connected to the set terminal of the flip-flop 52.
The output of is connected to a solenoid valve 54 that opens and closes the rear nozzle 36 via a driver 53.

Next, the operation of the automatic cloth changer according to this embodiment will be described with reference to FIGS. First, the woven fabric 10 that has been woven is wound onto the cross roll 18, and when the cross roll 18 is in a fully wound state, the full roll cross roll 17 is placed on the side mounting member 23 by a transfer device (not shown). Then, the empty cross roll 18 is placed between the driving roller 21 and the driven roller 22. After that, the drive signal of the drive roller 21 is turned OFF by the loom control device (not shown), the drive roller 21 is stopped, and the cut signal of the woven cloth 10 is output, and the woven cloth 10 is cut by the cutter 25. This cutting is performed by stopping the driving roller 21 and maintaining the woven cloth 10 in a tensioned state between the fully wound cross roll 17 and the driving roller 21. After that, a drive roller drive signal is output from the loom controller, and along with this, the driven roller 2
The rotation of 2 begins. Further, as shown in FIG. 2, at the same time, the output of the flip-flop 45 rises to H, the solenoid valve 47 opens, and air is jetted from the front nozzle 27 toward the cloth end of the woven cloth 10. At this time, even when the drive roller 21 is stopped, the woven fabric 10 by the loom is
The weaving of the woven cloth 10 between the guide rollers 14
I'm slack. Therefore, the resistance to the driving force of the drive roller 21 is small, and the rotation speed of the cross roll 18 also rapidly increases at the beginning of rotation. When the slack of the woven cloth 10 is removed, the rotation speed of the driven roller 22 drops to the weaving speed of the woven cloth 10 and becomes stable.

After the driven roller 22 has rotated by a predetermined amount, that is, when the count value of the number of pulses from the rotary encoder 28 exceeds a predetermined threshold value by the threshold value setting unit 44, the comparator 41 Output rises to H. As a result, the output of the flip-flop 45 drops to L and the driver 46 closes the solenoid valve 47.

Since weaving is continued and the drive roller 21 is rotating even after the electromagnetic valve 47 is closed, when it is determined that the cloth edge of the woven cloth 10 has reached a predetermined position, that is, from the rotary encoder 28. When the count value of the number of pulses of is greater than or equal to a predetermined threshold value by the threshold value setting device 48,
The output of the comparator 42 rises to H, and the solenoid valves 50, 54
Works. Thereby, as shown in FIG. 3, air is jetted from the rear nozzle 36 toward the cloth edge. Further, at the same time, the operating piece of the air cylinder 32 moves from the retracted position to the advanced position, and the cloth pushing member 19 swings.
The insert plate 34 pushes the woven fabric 10 between the cross roll 18 and the drive roller 21, as shown in FIG. After this,
When the count value of the number of pulses from the rotary encoder 28 exceeds a predetermined threshold value by the threshold value setter 49, the output of the comparator 42 falls to L, the solenoid valve 50 is switched, and as shown in FIG. As shown, air cylinder 3
The second operating piece retracts to the retracted position. Further, when the rotation amount of the driven roller 22, that is, the count value of the number of pulses from the rotary encoder 28 becomes equal to or more than the predetermined threshold value by the threshold value setting device 51, the output of the comparator 43 rises to H. , The solenoid valve 54 is closed. As a result, the air injection from the rear nozzle 36 is stopped. This rear nozzle 36
The stop timing of the air injection may be the same as the retreat timing of the cloth pushing member 19.

According to the automatic cloth changer of this embodiment,
When the cloth end after the cloth roll exchange is wound around the empty cloth roll 18, the operation control of the front nozzle 27, the rear nozzle 36, and the cloth pushing member 19 which are the winding assist members is controlled by the follower in proportion to the actual movement amount of the cloth end. Roller 22
Since it is controlled by the rotation amount of each of the winding auxiliary members, it is possible to operate each winding auxiliary member in correspondence with the position of the cloth edge accurately. In addition, it is possible to minimize energy consumption and the amount of air used without wasting air.

Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The automatic cloth changer according to this embodiment has a pair of guide rollers 14 as a rotating body that comes into contact with a woven cloth and rotates as the cloth edge moves.
A brush roller 60 is provided between them. The brush roller 60 has a brush 61 formed on the outer peripheral portion, and the brush 61 is initially set in a state in which the tip portion is broken while being in contact with the woven cloth 10, and the woven cloth 10 is placed between the guide rollers 14. Even if it is slack, the tip of the brush 61 is always in contact with the surface of the woven cloth 10, and the brush roller 60 is mounted so as to reliably rotate as the woven cloth moves. And
The rotation amount of the brush roller 60 is the rotary encoder 2
8 and the same control as in the first embodiment is performed.

Also with the automatic cloth changer of this embodiment, the actual moving speed of the cloth edge of the woven cloth 10 is determined by the brush roller 6
With 0, it is possible to reliably detect, and it is possible to accurately control the winding auxiliary member.

Next, a third embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The automatic cloth change device of this embodiment is provided with a guide roller 14 as a rotating body that comes into contact with a woven cloth and rotates with the movement of the cloth edge, against which the woven cloth 10 after the slack is removed contacts. The amount of rotation of the roller 14 is detected by the rotary encoder 28. The device for removing the slack of the woven fabric 10 is composed of a tension roller 63 which is applied to a predetermined position of the woven fabric 10 and a coil spring 64 which pulls the tension roller 63. The rotary encoder 28 is provided on the guide roller 14 located downstream of the tension roller 63 in the moving direction of the woven cloth 10.

The automatic cloth changer of this embodiment also has the same operation and operation as those of the above-mentioned embodiment, and the same effects can be obtained. In the case of this embodiment, the position of the guide roller can be arbitrarily set as long as the woven cloth 10 has no slack from the cloth edge.

The automatic cloth changer according to the present invention is not limited to the above embodiment, and the cloth winder can be applied to a so-called center drive type cloth winder in addition to the contact winding type. is there. Further, in the case of the contact winding type cloth winding device, the rotating body may be a drive roller, and the rotation amount may be detected by using the cross roll itself as a rotating body regardless of the type of the cloth winding device. In the case of the contact winding type cloth winding device, the driven roller is most preferable as the rotating body. When using a drive roller, if the drive torque is set too high, slippage will occur between the drive roller and the cross roll, and even if the rotation amount of the drive roller is detected, it is possible to detect the accurate cloth edge movement amount. When the cloth roll itself is used, it is difficult to detect the rotation itself because the axial center position of the cloth roll changes as the cloth is wound. Further, the rotation amount detector may be any one as long as it can obtain the value of the amount corresponding to the rotation of the rotating body, and may be, for example, one that counts ON / OFF of the proximity switch that detects a member attached to the rotating body. It is also possible to integrate the output of the tacho-generator connected to the rotating body.

[0021]

As described above, the automatic cloth changer of the present invention controls the operation of the wrapping auxiliary member of the woven cloth by the amount of rotation of the rotating body which comes into contact with the woven cloth and rotates with the movement of the cloth edge. It is possible to operate the winding auxiliary member in accordance with the position of the cloth edge accurately. Therefore, the cloth edge can be reliably wound around the cross roll, and further, air injection and other energy consumption can be suppressed to a minimum.

[Brief description of drawings]

FIG. 1 is a block diagram of an automatic cloth changer according to a first embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing one operation state of the automatic cloth changing device of the first embodiment.

FIG. 3 is a schematic explanatory view showing another operation state of the automatic cloth changing device of the first embodiment.

FIG. 4 is a schematic explanatory view showing another operating state of the automatic cloth changing device of the first embodiment.

FIG. 5 is a schematic explanatory view showing another operation state of the automatic cloth changing device of the first embodiment.

FIG. 6 is a timing chart showing the operation of the automatic cloth changing device of the first embodiment.

FIG. 7 is a partial explanatory view of the automatic cloth changer according to the second embodiment of the present invention.

FIG. 8 is a partial explanatory view of an automatic cloth changer according to a third embodiment of the present invention.

[Explanation of symbols]

 16 cloth winding device 18 cross roll 21 drive roller 22 driven roller 26 winding control device 28 rotary encoder

Claims (2)

[Claims] 1. An automatic cloth winding changer having a winding auxiliary member for winding the cloth end of a woven cloth around an empty cloth roll when the cloth roll is replaced, wherein the cloth cloth comes into contact with the woven cloth and rotates as the cloth end moves. A rotating body, a rotation amount detector that detects the rotation amount of the rotating body, and a winding control device that controls the operation of the winding auxiliary member based on the rotation amount detected by the rotation amount detector. Automatic cloth changer characterized by. 2. The rotating body supports a cross roll,
The automatic cloth changer according to claim 1, which is a driven roller which is rotated by the rotation of the cross roll.