JP3136221B2 - Automatic cloth changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cross roll for winding a woven fabric sent from a loom, which is fully wound.
The present invention relates to an automatic cloth changer that removes the full cross roll, automatically attaches an empty cross roll to the cloth winding apparatus, and starts cloth winding.

[0002]

2. Description of the Related Art Woven fabric sent from a loom is wound on a cross roll, and after the cross roll is full, the full roll is removed and an empty cross roll is automatically mounted on a cloth winding device. An automatic cloth changer for starting cloth winding is disclosed in Japanese Patent Application Laid-Open No. 2-33354. When the empty cloth roll is attached to the cloth winding apparatus, the automatic cloth winding apparatus controls the rotation and stop of the arm supporting the empty cross roll based on the weaving speed calculated from the number of rotations of the loom and the weft density. Is what you are doing.
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, the drive roller of the cloth winding device is stopped or reversed when cutting the woven fabric while weaving is continued, and tension is applied to the woven fabric. Since the cutting was performed, during the cutting period, the slack was generated in the woven fabric on the upstream side in the traveling direction of the woven fabric from the stopped driven roller. For this reason,
After cutting the woven fabric, when the drive roller is rotated and the woven fabric starts to be wound around the cross roll, the cross roll rotates at high speed until the slack is wound. When the winding of the slack is completed, the rotation speed of the cross roll matches the weaving speed. Therefore, when the winding assisting member is controlled based on the weaving speed while the woven fabric is sagging as in the automatic cloth winding changing device of the conventional technique, the rotation of the cross roll at the beginning of winding is fast, and the cross roll There is a problem that the cloth edge cannot be wound normally.

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

[0005]

SUMMARY OF THE INVENTION The present invention relates to a winding roller.
Sends the woven fabric to the cross roll at a speed corresponding to the weaving speed.
Ri is issued, cut of the fabric at the time of exchange of the cross roll
Has a winding assisting member for winding the Sorted cloth edge empty cloth roll, position downstream of the take-up roller
A rotating body that rotates along with the movement of the location and in contact with the fabric the fabric end, a rotation amount detector for detecting the amount of rotation of the rotating body, based on the rotation amount detected by the rotation amount detector An automatic cloth changer provided with a winding control device for controlling the start of operation of the winding auxiliary member.

[0006]

According to the automatic cloth changing device of the present invention, when the cross roll is changed, the winding auxiliary member for winding the cloth end around the empty cross roll is moved by the rotating body rotating in accordance with the moving speed of the cut cloth end. Since the control is performed based on the rotation amount, the winding auxiliary member can be accurately controlled in accordance with the actual movement amount of the cloth edge.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a first embodiment of the present invention. The automatic cloth changing device of this embodiment is used for a so-called contact winding cloth winding apparatus, and a woven cloth 10 woven by a loom (not shown). Is wound around a winding roller 12, and then, is wound around a cross roller 18 provided on a cloth winding device 16 by a predetermined amount via a guide roller 14.

As shown in FIG. 1, the cloth winding device 16 includes a driving roller 2 which is a rotating body rotated by a driving motor 20.
1 and a driven roller 2 which is a rotatable rotatable member
2 are mounted parallel to each other. The drive roller 21 and the driven roller 22 support and rotate the side surface of the cross roll 18 around which the woven fabric 10 is wound. Further, the driving roller 21 of the cloth winding device 16 is
In order to ensure that the woven fabric 10 is wound up by the cross roll 18 at the beginning of the winding of the cloth edge of the woven fabric 10 between the and the driven rollers 22, A cross guide 24 is provided adjacent to the cross roll 18 at a predetermined interval.

On the side of the driven roller 22, there is provided a mounting member 23 for mounting the full-roll cross roll 17, and a cutter for cutting the woven fabric 10 between the driven roller 22 and the mounting member 23. 25 and the woven fabric 10 cut by blowing air
A front nozzle 27 is provided as a winding auxiliary member for blowing the cloth end of the cloth onto the empty cross roll 18 side.
On the drive roller 21 side of the cloth winding device 16, a cloth pushing member 19, which is a winding auxiliary member that pushes the cloth end between the drive roller 21 and the cross roll 18, is attached. The cloth pushing member 19 is provided so as to be swingable about a 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 edge is
Plate 34 to be inserted between the sheet and the cross roll 18
And a rear nozzle 36 that injects air and blows the cloth end between the drive roller 21 and the cross roll 18.

The drive motor 20 is connected to a loom control device that outputs a drive signal via an amplifier (not shown). Then, the full-width cross roll 17 is transferred to the cloth winding device 16 and the empty cross roll 18 is
A winding control device is provided for automatically placing the cloth between the driven rollers 22 and the driven roller 22 to perform cloth winding exchange and winding the cloth end of the woven cloth around the cross roll. In the winding control device 26, a rotary encoder 28 which is a rotation amount detector for detecting the rotation amount of the driven roller 22 is provided coaxially with the driven roller 22, and a signal obtained by the rotary encoder 28 is transmitted to a counter 40. You are typing.

The output of the counter 40 is supplied to comparators 41 and 4
2, 43 respectively. The output of the threshold value setter 44 that outputs a threshold value for setting the injection stop timing of the front nozzle 27 is input to the comparator 41. The output of the comparator 41 is the 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. The comparator 42 has a threshold value setting device 4 for setting the forward operation time and the backward operation time of the air cylinder 32.
8, 49 outputs are respectively input. The output of the comparator 42 is supplied to the air cylinder 32 via the driver 49.
Is connected to a solenoid valve 50 for operating the. Further, the output of the threshold value setting unit 51 for setting 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 terminal of the comparator 42 is connected to the set terminal of the flip-flop 52.
Is connected to a solenoid valve 54 for opening and closing the rear nozzle 36 via a driver 53.

Next, the operation of the automatic cloth changer of this embodiment will be described with reference to FIGS. First, the woven woven fabric 10 is taken up by a cross roll 18, and when the cross roll 18 is fully loaded, the full-width cross roll 17 is transferred to a lateral 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. Thereafter, the drive signal of the drive roller 21 is turned off by a loom control device (not shown), the drive roller 21 is stopped, a cut signal of the woven fabric 10 is issued, and the woven fabric 10 is cut by the cutter 25. This cutting is performed by stopping the drive roller 21 and maintaining the woven fabric 10 in a tension state between the full-roll cross roll 17 and the drive roller 21. Thereafter, a driving roller drive signal is output from the loom control device, and the driven roller 2
The rotation of 2 starts. 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 fabric end of the woven fabric 10. At this time, even when the driving roller 21 is stopped, the woven fabric 10
Of the woven fabric 10 between the guide rollers 14.
It is sagging. Therefore, the resistance to the driving force of the driving 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 fabric 10 is removed, the rotation speed of the driven roller 22 drops to the weaving speed of the woven fabric 10 and stabilizes.

After the driven roller 22 has rotated a predetermined amount, that is, when the count value of the number of pulses from the rotary encoder 28 has become equal to or greater than a predetermined threshold value by the threshold value setting device 44, the comparator 41 Rises to H level. As a result, the output of the flip-flop 45 falls to L, and the solenoid valve 47 is closed by the driver 46.

Since weaving continues even after the solenoid valve 47 is closed and the drive roller 21 is also rotating, when it is determined that the cloth end of the woven cloth 10 has reached a predetermined position, that is, when the rotary encoder 28 When the count value of the number of pulses becomes equal to or more than a predetermined threshold value by the threshold value setting unit 48,
The output of the comparator 42 rises to H, and the solenoid valves 50 and 54
Operates. Thereby, as shown in FIG. 3, air is injected 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.
As shown in FIG. 7, the insertion plate 34 pushes the woven fabric 10 between the cross roll 18 and the drive roller 21. After this,
When the count value of the number of pulses from the rotary encoder 28 becomes equal to or more than a predetermined threshold value by the threshold value setting device 49, the output of the comparator 42 falls to L, the solenoid valve 50 is switched, and FIG. As shown, the air cylinder 3
The second operation piece is retracted 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 a predetermined threshold value by the threshold value setting device 51, the output of the comparator 43 rises to H. Then, the solenoid valve 54 is closed. Thereby, the air injection of the rear nozzle 36 stops. This rear nozzle 36
May be the same as the retreat timing of the cloth pushing member 19 described above.

According to the automatic cloth changing device of this embodiment,
When the cloth edge after the cross roll replacement is wound around the empty cross roll 18, the operation control of the front nozzle 27, the rear nozzle 36, and the cloth pushing member 19, which are the winding assisting members, is performed by a follower proportional to the actual movement amount of the cloth end. Roller 22
, The winding assisting members can be operated in accordance with the position of the cloth edge accurately. In addition, energy consumption and air consumption can be minimized without wasteful air injection.

Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The automatic cloth changer according to this embodiment includes a pair of guide rollers 14 as a rotating body that comes into contact with the 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 an outer peripheral portion. Initially, the brush 61 is set in a state in which the brush 61 is in contact with the woven fabric 10 and the leading end is bent. The brush 61 is attached so that the tip of the brush 61 always contacts the surface of the woven fabric 10 even if it sags, and the brush roller 60 is surely rotated with the movement of the woven fabric. And
The rotation amount of the brush roller 60 is determined by the rotary encoder 2.
8 and the same control as in the first embodiment is performed.

In the automatic cloth changer according to the present embodiment, the actual moving speed of the cloth
0 enables reliable detection and accurate control of 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 embodiment are denoted by the same reference numerals, and description thereof will be omitted. The automatic cloth winding change device of this embodiment is provided with a guide roller 14 which comes into contact with the woven fabric 10 from which the slack has been removed, as a rotating body which comes into contact with the woven cloth and rotates with the movement of the cloth edge. The amount of rotation of the roller 14 is detected by a rotary encoder 28. The device for removing the slack of the woven fabric 10 includes a tension roller 63 applied to a predetermined position of the woven fabric 10 and a coil spring 64 that 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 fabric 10.

The automatic cloth changing device of this embodiment has the same operation and effect as the above embodiment, and the same effect 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 is a guide roller having no slack from the cloth end.

The automatic cloth changing device of the present invention is not limited to the above embodiment, and the cloth winding apparatus can be applied to a so-called center drive type cloth winding apparatus in addition to the contact winding type. is there. In the case of a contact winding type cloth winding device, the rotating body may be a driving 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 a contact winding type cloth winding device, a driven roller is most preferable as the rotating body. If a drive roller is used, if the drive torque is set too high, a slip occurs between the drive roller and the cross roll, so that even if the rotation amount of the drive roller is detected, the accurate movement of the cloth edge must be detected. In addition, when the cross roll itself is used, it is difficult to detect the rotation itself because the position of the axis of the cloth changes with the winding of the cloth. Further, the rotation amount detector only needs to be able to obtain a value of an amount corresponding to the rotation of the rotating body. For example, a rotation amount detector that counts ON and OFF of a proximity switch for detecting a member attached to the rotating body may be used. Alternatively, the output of the tachogenerator connected to the rotating body may be integrated.

[0021]

According to the automatic cloth winding apparatus of the present invention, the operation of the auxiliary member for winding the woven cloth is controlled 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. The winding assisting member can be operated in accordance with the position of the cloth edge exactly. Therefore, the cloth edge can be reliably wound around the cross roll, and air consumption and other energy consumption can be minimized.

[Brief description of the drawings]

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

FIG. 2 is a schematic explanatory view showing an 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 operation 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 an automatic cloth changing device according to a second embodiment of the present invention.

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

[Explanation of symbols]

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

Claims (2)

(57) [Claims] A speed corresponding to a weaving speed by a winding roller.
The woven fabric is sent out to a cross roll, and in the automatic cloth winding change device having a winding auxiliary member for winding the cut cloth end of the woven cloth around an empty cross roll at the time of replacing the cross roll, the winding roller A rotating body that is also located downstream and contacts the woven fabric and rotates with the movement of the cloth edge, a rotation amount detector that detects the amount of rotation of the rotating body, and a rotation amount that is detected by the rotation amount detector. A winding control device for controlling the start of operation of the winding auxiliary member based on the amount. 2. The rotating body supports a cross roll,
2. An automatic cloth changing device according to claim 1, wherein said automatic cloth changing device is a driven roller which is rotated by rotation of a cross roll.