JP5004316B2 - Loom cloth winding device - Google Patents

Description

  The present invention relates to a cloth winding device for a loom that drives a cloth winding roll with a motor capable of torque control and controls cloth winding tension in a programmable manner according to a change in the cloth winding diameter of the cloth winding roll.

  In the cloth winding device described in Patent Document 1, a friction clutch is interposed on a drive shaft of a cross roller (cloth winding roll), and a friction plate and a transmission plate are used with an appropriate force as a mechanical brake built in the friction clutch. By pressing, the friction plate and the transmission plate are slipped, and an appropriate braking force is generated between them, and the braking force is applied to the drive transmission from the main shaft of the loom, and the cross roller is applied. A predetermined rotational torque is transmitted.

  In the above prior art, a change in the winding diameter of the woven fabric is mechanically detected, and the pressing force applied between the friction plate and the transmission plate is mechanically adjusted in accordance with the change in the winding diameter. The cloth winding tension is controlled by changing the rotational torque of the drive shaft. Here, [cloth winding tension F] = [rotational torque T] / [cloth winding radius R].

JP-A-60-17151 (Claims etc.)

  In the technique of the above-mentioned patent document 1, even if the rotational torque of the driving shaft of the cross roller is mechanically controlled in response to the change in the cloth winding diameter, an appropriate cloth winding tension is applied to each cloth winding diameter in the winding process. Since it cannot be obtained, the woven fabric which is easily wrinkled and has a defect cannot maintain good fabric quality unless the brake force is adjusted manually during weaving.

  As a countermeasure, there is a method in which the mechanical brake is controlled by an actuator such as an air cylinder according to the cloth winding diameter to adjust the braking force. However, the mechanical brake itself has a life, and the braking force changes due to wear. Therefore, periodic maintenance is necessary.

  In addition, there is a method of electrically controlling by a powder clutch brake, but it is expensive and the powder also changes over time, so periodic maintenance is also necessary.

  In addition, the above-mentioned Patent Document 1 does not have any description that it is necessary to give consideration to the cloth winding tension when the loom is in a stopped state.

  Accordingly, an object of the present invention is to enable the cloth winding tension to be controlled to an appropriate value in accordance with the change in the cloth winding diameter of the cloth winding roll without periodic maintenance, and the cloth winding when the loom is in a stopped state. The purpose is to ensure proper tension and prevent wrinkles at startup.

  Based on the above object, the cloth winding device of the loom according to the present invention includes a torque control motor for driving the cloth winding roll, a cloth winding diameter detector for extracting information on the cloth winding diameter of the cloth winding roll as an electric signal, and the cloth winding. A cloth winding drive control device that controls the driving of the motor in accordance with a cloth tension control program corresponding to a change in the cloth winding diameter based on an electric signal related to the diameter. The cloth tension control program is capable of individually setting the cloth winding tension during the loom operation and during the stop, and at the time of stoppage, the setting period of the winding tension tension during the operation from the setting value of the cloth winding tension during the operation is set. At the time of start-up, the set value of the wound web winding tension is shifted to the set value of the running web winding tension within the specified period.

  In addition, the cloth winding drive control device may enable forward rotation or reverse rotation of the stopped cross roll by a switch operation. Further, the cloth roll drive control device may rotate the forward or reverse cross roll after a predetermined set time has elapsed, or You may make it stop automatically after operation | movement for this length.

  The cloth winding tension control program automatically reverses the cloth winding for a predetermined length or a predetermined time when the counter is stopped, and stops the cloth winding by loosening the cloth.

  According to the cloth winding device of the loom according to the present invention, the driving of the motor is programmable based on the electric signal related to the cloth winding diameter, so that winding is prevented by ensuring appropriate cloth winding tension according to each cloth winding diameter. Since there are no consumable parts such as a mechanical brake, maintenance can be eliminated. In addition, it is possible to set the winding tension separately during operation and stoppage of the loom, and at the time of stoppage, the set value of the winding tension during operation shifts from the setting value of the winding tension during operation within the setting period and starts Occasionally, the set value of the winding tension during stoppage changes to the setting value of the winding tension during operation within the specified period, so that the optimum winding tension is maintained even when the loom is stopped, and the occurrence of wrinkles at startup is effective. Can be prevented.

Switch operation enables normal or reverse rotation of the stopped cross roll and automatically stops the cross roll after a predetermined set time has elapsed or after a predetermined length of operation. Can be prevented.

  When the counter is stopped, the cloth winding is automatically reversed for a predetermined length or a predetermined time, and the cloth is loosened and stopped, so that the counter-off operation after the counter is stopped can be automated.

  FIG. 1 shows a main part of a loom 1 to be controlled. In FIG. 1, the warp 2 is fed out as a sheet from the warp beam 3, passed through the back roll 4 through the reed 5 and reed 6, and reaches the weave 9 of the woven fabric 8 while forming the opening 7. . On the other hand, the weft 10 is weft-inserted into the openings 7 of the upper and lower warps 2 and then beaten into the weave 9 of the woven fabric 8 by the reed 6 to become the woven fabric 8. The woven fabric 8 is wound around the fabric winding roll 14 through one press roll 13, the clothing winding roll 12, and the other press roll 13. The fabric winding roll 14 is driven by the fabric winding device 11 of the loom of the present invention.

  FIG. 2 shows a cloth winding device 11 of a loom. In FIG. 2, the cloth winding device 11 of the loom includes a motor 15 capable of torque control, a cloth winding diameter detector 16, a cloth winding drive control device 17, a display 18, a driving amplifier 21, a setting device 22, and the like. . The loom control device 19 detects the rotation angle of the main shaft 23 of the loom 1 with the encoder 20 and executes necessary control on the loom 1.

  The motor 15 is a torque motor or servo motor capable of torque control, for example, and drives the cloth winding roll 14 with a predetermined driving torque. The cloth winding diameter detector 16 not only directly detects the cloth winding diameter of the cloth winding roll 14 but also indirectly detects the cloth winding diameter of the cloth winding roll 14 from the weaving length, the number of picks, etc., and information on the cloth winding diameter of the cloth winding roll 14. Is taken out as an electric signal and sent to the cloth winding drive control device 17.

  Here, the cloth winding drive control device 17 sets the spindle 23 detected by the encoder 20 in addition to the setting data inputted in advance by the setting device 22 and information on the cloth winding diameter of the cloth winding roll 14 from the cloth winding diameter detector 16. A rotation angle signal or the like is input via the loom control device 19 to execute programmable control, and the rotation amount of the motor 15 or the driving torque of the motor 15 is changed based on a program set according to each cloth winding diameter. .

  In this way, the cloth winding drive control device 17 prevents winding of the woven cloth 8 by securing an appropriate cloth winding tension to the woven cloth 8 according to each cloth winding diameter. In this control process, since there are no consumable parts such as a mechanical brake, no special maintenance is required for the fabric winding device 11 of the loom.

  The operator operates the setting device 22 to preset a plurality of cloth winding diameters from the beginning of winding to the end of winding, for example, the optimum winding tension for each of the winding start, winding middle, and winding end in accordance with the weaving conditions. The cloth winding drive control device 17 creates a cloth winding tension control program corresponding to the change in the cloth winding diameter from the start of winding to the end of winding, based on the set value of the winding tension for the woven cloth 8. A cloth winding tension control program is executed in accordance with the change in diameter. According to this control, an optimum cloth winding tension can be ensured according to each cloth winding diameter, and therefore, winding can be prevented even for a more delicate fabric.

  Further, the cloth winding drive control device 17 displays the relationship between the cloth winding diameter and the cloth winding tension as a graph on the display 18 based on the cloth tension control program, and moves the dot or line on the graph to thereby change the cloth winding tension. The set value can be changed.

  FIG. 3 is a graph showing the relationship between the cloth winding diameter and the cloth winding tension. On this graph, points A, B, and C indicate the optimum cloth winding tension corresponding to the cloth winding diameter between the start of winding and the end of winding by the operation of the setting device 22. The control of the fabric tension is theoretically executed along the broken lines (solid lines) of the points A, B, and C in the graph, but it is almost close to an ideal curve (two-dot chain line) depending on factors such as response characteristics of the control system. Done along the path. In addition, a dotted line is a graph of the relationship between the cloth winding diameter by conventional mechanical control, and the cloth winding tension.

  When the relationship between the cloth winding diameter and the cloth winding tension is displayed in the form of a graph, the target value can be easily set and changed, the working time can be shortened, and the setting variation between the machine bases can be eliminated.

  In addition, the cloth winding drive control device 17 includes a graph showing the relationship between the cloth winding diameter and the cloth winding tension in the process of executing the cloth tension control program, as well as the set cloth winding tension (cloth winding torque) and the set cloth winding diameter. (Weaving length and number of picks) and current values of fabric winding tension and fabric diameter are detected (calculated) and displayed. This display is represented as a point (position) on the graph or as data (numerical value) outside the graph. According to this display, by confirming the current value at the time of occurrence of curl or the like, the setting can be appropriately changed and recurrence can be prevented.

  The cloth winding tension and the cloth winding diameter are concepts including the cloth winding torque, the weaving length, and the number of picks in each parenthesis. The current value of the cloth winding diameter is directly detected by the winding diameter detector 16 or indirectly calculated by calculation based on the detection data by the winding diameter detector 16.

  4 and 5 show other specific examples of the winding diameter detector 16. The winding diameter detector 16 in FIG. 4 uses a guide roll 25 having a cloth width or a width larger than the cloth width provided at the ends of the pair of levers 24, and makes the guide roll 25 contact the woven cloth 8 of the cloth winding roll 14. The outer diameter of the woven fabric 8 (cloth winding) is converted into the rotation angle of the pair of levers 24, and the rotation angle is detected by the potentiometer 26 as the cloth winding diameter. Moreover, the winding diameter detector 16 of FIG. 5 is configured by a distance sensor, and detects the cloth winding diameter without contact with the outer diameter of the woven cloth 8 (cloth winding).

  Furthermore, FIG. 6 is an example of detection of cloth winding tension. In FIG. 6, the load cell 27 is connected to a displaceable roll 28 for detection, and detects the winding tension of the woven fabric 8 wound in a Z shape between the displaceable roll 28 and the fixed roll 29. . Of course, the fabric tension corresponds to the fabric winding torque.

  The cloth winding tension control program can individually set the cloth winding tension as a different value when the loom is operating and when it is stopped. When stopping, the control shifts from the setting value of the winding tension during operation to the setting value of the winding tension during operation within the setting period, and during startup, the setting of the winding tension during operation is performed from the setting value of the winding tension during stopping. Move to the value within the specified period. According to this control, the optimum cloth winding tension can be maintained even when the loom is stopped, and the occurrence of wrinkles at the time of starting can be prevented.

  The operator enables normal rotation or reverse rotation of the stopped fabric winding roll 14 by a switch operation in the loom control device 19, and automatically stops after a predetermined set time has elapsed or after a predetermined amount of weaving operation. This is to prevent damage to the fabric caused by forgetting the stop operation, such as cloth stains, wrinkles, and scratches, by automatic stop.

  In the cloth winding tension control program, when the counter (pick counter) in the loom control device 19 is stopped, the cloth winding operation is automatically reversed over a predetermined length or a predetermined time, and the cloth is loosened and stopped. This makes it possible to automate the counter-off work after the counter is stopped.

It is a side view of the principal part of a loom and the cloth winding device of a loom. It is a block diagram of the cloth winding device of a loom. It is a graph of the relationship between cloth winding diameter and cloth winding tension. It is a perspective view of the example of a cloth winding diameter detection. It is a side view of the example of a cloth winding diameter detection. It is a side view of the example of detection of cloth winding tension.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loom 2 Warp 3 Warp beam 4 Back roll 5 綜 絖 6 筬 7 Opening 8 Woven cloth 9 Weaving mouth 10 Weft 11 Weaving machine winding device 12 Clothing roll 13 Press roll 14 Fabric winding roll 15 Motor 16 Fabric winding diameter detector 17 Fabric winding drive control Device 18 Display device 19 Loom control device 20 Encoder 21 Drive amplifier 22 Setting device 23 Main shaft 24 Lever 25 Guide roll 26 Potentiometer 27 Load cell 28 Roll 29 Roll

Claims (2)

A winding roll for winding a woven fabric fed through a clothing roll and a press roll pressed against the clothing winding roll, a torque controllable motor for driving the cloth winding roll, and a winding diameter of the cloth winding roll A cloth winding diameter detector for extracting information relating to the cloth winding diameter, and a cloth winding drive control device for controlling the drive of the motor in accordance with a control program for the cloth winding tension corresponding to the change in the cloth winding diameter based on the electric signal related to the cloth winding diameter. Have
The cloth winding tension control program can individually set the cloth winding tension during the loom operation and during stoppage, and at the time of stoppage, the setting value of the cloth winding tension during operation is set within the set period from the setting value of the cloth winding tension during operation. When starting up, transition from the set value of the wound fabric tension to the set value of the wound fabric tension during operation within the specified period.
A cloth winding device for a loom characterized by the above.   The cloth winding device for a loom according to claim 1, wherein when the counter is stopped, the cloth winding is automatically reversed for a predetermined length or a predetermined time, and the cloth is loosened and stopped.

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