JP2003201650A - Winding system or feed system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding system or feed system for surely restraining the rotation of a feed beam or winding roll upon halting a loom. <P>SOLUTION: This winding system or feed system functions to rotate the winding roll (11) or feed beam (2) via a motor (15), respectively, when a drive (14) drives the motor (15) for exclusive use based on a speed command signal outputted in response to a loom control signal; wherein a halt retention command means (20) is added to the drive (14) and functions to retain the motor (15) at a halt by outputting a halt retention command when the speed command signal is outputted at a value below the output range of such a signal in the case of normally operating the loom. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loom winding device,
Or, it relates to a delivery device.

[0002]

2. Description of the Related Art In a loom, the rotation of a driving motor is transmitted through a reduction gear to a warp delivery beam or take-up roll for rotation, and when the loom is stopped, warp tension is applied to the delivery beam or take-up roll. Despite the addition, the reduction gear keeps the delivery beam and the take-up roll stopped rotating. However, since the rotation prevention function of the reduction gear is not perfect, if the vibration of another machine is applied during the rotation stop period, the delivery beam and the take-up roll will rotate slightly and the cloth fell position will move. As a result, weaving bars may occur. The present inventor has considered that if the unexpected rotation of the delivery beam and the take-up roll can be reliably prevented, the number of loom can be further reduced.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to reliably prevent the rotation of the delivery beam and the take-up roll when the loom is stopped.

[0004]

The invention according to claim 1 is
A winding device that drives a dedicated motor based on a speed command signal output corresponding to a loom control signal to rotate a winding roll through the motor, or a delivery device that rotates a warp beam. , A stop holding command means is added to the drive device, and the stop holding command means outputs the stop holding command when the speed command signal is output to a value less than the output range of the speed command signal at the time of normal operation of the loom. And holding the motor in a stopped state.

The normal operation of the loom referred to here is an operation accompanied by a rotation command to the winding device or the feeding device, and specifically, the operation in the operation of the loom, the reverse rotation of the loom, the preparation for starting the loom, and the stop of the loom. It may include an operation for so-called weaving bar prevention that is performed, and a manual forward / reverse rotation operation that is performed for weaving preparation such as when weaving or weaving.

The stop hold command signal may be output during the entire time period when the speed command signal is output to a value less than the output range of the speed command signal during normal operation of the loom, but it may be output during a specific time period. You may output only to. For example, when the motor is operated only during the period when the warp tension increases due to the warp shedding, such as when the weaving operation of the loom is performed, energy saving is achieved as compared with the case where the warp is output during the entire time period.

Further, the speed command signal is outputted from the speed calculating means which takes in the loom control signal, but in the case of a circuit in which the speed calculating means outputs the speed command signal as it is to the current amplifier of the drive device. When the speed command signal is output as an analog signal, the speed command signal is output including the offset error of the output circuit even if the result of the calculation by the speed calculation means is 0. Therefore, the servo motor slightly rotates. There is. In order to eliminate such an inconvenience, as in the invention of claim 2, the stop holding command means compares the speed command signal with the threshold value setting device in which the threshold value less than the output range is set. It is desirable to include a comparator that outputs a stop hold command.

The threshold value set in the threshold value setting device may be set to a value that can determine whether the level of the speed command signal is the output during normal operation or not, and preferably set to a value near 0. You can Further, two threshold values can be set in the threshold value setting device, that is, the threshold values can be set in ± directions with 0 interposed therebetween. By doing so, the comparator outputs a stop hold command when the level of the speed command signal is within the range of the two set values (that is, a value near 0), and the motor can be held in the stopped state. It is more effective for a winding device or a feeding device in which an operation involving is performed. The threshold may be a value designed in advance, a value obtained from experience, or a value automatically determined from the value of the speed command signal during operation, and the setting method or specific numerical value is not mentioned.

In the above-mentioned invention of claim 2, the speed command signal is used as it is, but a signal which is a basis of the speed command signal may be used. That is, as in the third aspect of the invention, the stop hold command means may include a determination circuit that substitutely detects the speed command signal by the signal that is the basis of the speed command signal and outputs the stop hold command. The signal that is the basis of the speed command signal is not only a loom control signal but also an operation signal (forward rotation, forward rotation,
Reverse rotation command) is also included.

Further, as in the invention of claim 4, the driving device may include a controller for keeping the motor in a stopped state in response to the stop holding command.

Further, as in the invention of claim 5, the motor may be provided with a brake device for preventing the rotation of the motor in response to the stop and hold command.

The brake device may apply the holding torque directly to the motor output shaft, or may apply the holding torque via a mechanism for transmitting the motor rotational movement to the winding roller or the delivery beam. Specific examples of the latter include those in which the locking pin is projected and retracted to engage the locking pin with the reduction gear of the transmission mechanism, and those in which the rotation of the reduction gear is stopped by a disc brake.

[0013]

FIG. 1 shows the overall construction of a loom along with the warp path. The warp yarn 1 is wound around the delivery beam 2, passes through the tension rolls 3 and becomes almost horizontal, forms an opening 5 by the heald 4, intersects with the weft yarn 6 on the front side of the cloth fell, and beats the reeds 7 The woven cloth 8 is obtained. Then, the woven cloth 8 changes its direction by the breast beam 9 and the winding roll 1 by the guide roll 10.
After being wound around the outer periphery of 1, the cloth winding beam 12 is sequentially wound up.

The first embodiment of the present invention is applied to a winding device for the delivery beam 2, and roughly speaking, the control device 13 controls the motor (AC servo) of the driving device 14 based on various input signals. The motor 15 is rotated (forward rotation, reverse rotation) and stopped, the operation of the drive device 14 is transmitted to the delivery beam 2 via the reduction gear 16, and during the rotation stop period of the delivery beam 2,
The control device 13 operates the drive device 14 as a braking device to restrict the delivery beam 2 from rotating.

More specifically, first, the controller 13
The weaving condition data such as the warp target tension, the driving density, and the loom rotation speed are input to the setting device 17 in advance. A loom control signal is output to the speed calculation means 18 of the control device 13 from a main control device (not shown) that controls the operation of the entire loom, for example, operation (forward rotation), inching, reverse rotation, start preparation, stop and the like. When the loom control signal is a signal that causes the motor 15 to rotate, the speed calculation means 18 uses the weaving condition data and the signal from the delivery beam winding diameter sensor 19 to output the delivery beam 2. The basic rotation speed is calculated and the speed command signal is output to the stop / hold command means 20 and the switch (switch) 21 of the drive unit 14. On the other hand, during the operation of the loom, the timing signal is output to the speed calculation means 18, and the warp tension signal obtained from the tension sensor 22 connected to the tension roll 3 is sampled based on the timing signal to calculate the actual average tension value. , The basic rotation speed is corrected by the deviation between the actual average tension value and the target tension, and the corrected speed command signal is output. The timing signal is output from the timing signal generator. The timing signal generator detects the rotation angle of the crankshaft of the loom and gives the timing necessary for calculating the speed at a predetermined rotation angle. .

The stop / hold command means 20 outputs an open / close signal to the switch 21 and outputs to the controller 23 the presence / absence of a stop / hold command as ON / OFF signals. As shown in FIG. 2, the stop hold command means 20 fetches the speed command signal by the comparator 24, and when the level of the speed command signal is equal to or higher than the threshold value set by the threshold value setting device 25, the speed command signal is valid. When it is determined that the motor 15 is in the rotation period, the comparator 24 outputs a close signal to the switch 21.
The threshold value is set to a value capable of determining whether or not the level of the speed command signal is the output level during normal operation, for example, a value near 0. As shown in FIG. 1, the speed command signal that has passed through the switching device 21 is taken into the current amplifier 26 in the driving device 14, and the signal from the angle detector (encoder) 27 that detects the angle of the motor drive shaft is used. The motor 15 is rotated at a desired speed by feedback control. Then, the rotation of the motor 15 is transmitted to the delivery beam 2 via the reduction gear 16. When the switch 21 is closed,
Since the stop hold command is not output from the stop hold command means 20 to the controller 23, the controller 23 does not operate.

In the comparator 24, when the level of the speed command signal is less than the threshold value, it is judged that the speed command signal is invalid and the motor 15 is in the rotation stop period, and the open signal is sent to the switch 21. Then, the switch 21 is opened and the passage of the speed command signal is blocked. Further, the comparator 24 outputs a stop hold command to the controller 23. Controller 2
In FIG. 3, the rotation angle of the motor drive shaft is constantly fetched from the angle detector 27, and the controller 23 clears the angle data accumulated until fetching the stop hold command signal immediately after fetching the stop hold command signal. At the same time, the signal holding the angle data obtained when the stop holding command signal is fetched is output to the current amplifier 26, and the motor 15 is driven.
Position control to stop.

Further, as another example of the stop hold command means 20, as shown in FIG. 3, the loom control signal, the operation signal and the timing signal are taken into the discriminating circuit 28. A program is input in advance to the discriminating circuit 28, which is a signal that causes the motor 15 to rotate as a loom control signal, that is, an operation signal,
Start preparation signal to move the cloth fell position and prevent the weft bar,
Further, when a manual forward rotation signal and a manual reverse rotation signal are input during the manual forward rotation reverse rotation performed for the preparation of weaving such as when weaving or weaving, it is determined that it is the rotation period of the motor 15. The closing signal is output to the switch 21. When the loom jogging signal and the loom reverse rotation signal, which are loom control signals, are input, the determination circuit 28 outputs the speed command signal for accurately moving the cloth fell position by one pick when the loom reverse movement is reversed. Since it is output from the calculation means at a predetermined spindle angle timing, a close signal is output to the switch 21 in response to the input of the timing signal. On the other hand, when the signal that is the basis of the speed command signal is not input, the determination circuit 28 determines that the rotation stop period of the motor 15 is in progress and issues an open signal to the switcher 21 and a stop hold command to the controller 23. Output.

In the second embodiment of the present invention, as shown in FIG. 4, a braking circuit as a controller 25 controls the operation of a brake device 29, and the brake device 29 clamps the reduction gear 16 so that it cannot rotate. It is a thing. The braking circuit as the controller 25 outputs an operation command signal when the motor 15 is in the rotation period, and outputs a non-operation command signal to the brake device 29 when the motor 15 is in the rotation stop period.

The present invention is not limited to the above embodiment. For example, since the woven fabric winding device having the winding roll 11 as a main component has the same structure as the warp feeding device, the present invention may be used in the woven fabric winding device. It may be used for both the feeding device and the winding device.

[0021]

According to the present invention, when the loom is stopped, the motor is held in the stopped state by the stop holding command means, and accordingly, the stopped state of the delivery beam or the take-up roll can be reliably maintained. it can.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of a loom stand preventing device for a loom of the present invention.

FIG. 2 is a block diagram showing an example of a stop hold command means.

FIG. 3 is a block diagram showing another example of a stop and hold command means.

FIG. 4 is a block diagram showing a second embodiment of the weft bar preventing device of the loom of the present invention.

[Explanation of symbols]

2 Outgoing beam 11 winding roll 14 Drive 15 motor 20 Stop hold command means 23 Controller 24 comparator 25 threshold setter 28 Discrimination circuit 29 Brake device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yutaka Matsuyama             5-18-18 Nomachi, Kanazawa, Ishikawa Prefecture Tsudakoma             Industry Co., Ltd. F-term (reference) 4L050 AB09 CA10 CA12 CA22 CC02                       EA02 EA07 EC04 ED02 ED03                       ED23 ED35

Claims (5)

[Claims] 1. A motor (1) dedicated to a drive device (14) based on a speed command signal output corresponding to a loom control signal.
5) is driven, and the winding roll (1
A winding device for rotating 1) or a delivery device for rotating a delivery beam (2), wherein stop holding command means (20) is added to the drive device (14), and the stop holding command means (20) is When the speed command signal is output to a value less than the output range of the speed command signal during normal operation of the loom, a stop holding command is output to hold the motor (15) in a stopped state. Taking device or sending device. 2. A stop hold command means (20) comprises a threshold value setter (25) for setting a threshold value below the output range, and a comparator for comparing a speed command signal with the threshold value and outputting a stop hold command. (24) is included, The winding device or delivery device of Claim 1 characterized by the above-mentioned. 3. The stop hold command means (20) includes a discrimination circuit (28) for substituting detection of the speed command signal by a signal which is a source of the speed command signal and outputting a stop hold command. The winding device or the sending device according to claim 1. 4. The drive device (14) includes a controller (23) for keeping the motor (15) in a stopped state in response to a stop holding command, according to claim 1, 2 or 3.
The winding device or the sending device described in the above. 5. A brake device (2) for preventing rotation of the motor (15) in response to a stop hold command.
9. The winding device or the feeding device according to claim 1, 2 or 3, further comprising 9).