JP2614977B2 - Numerical control unit with tension control function for supply wire of winding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller having a tension control function for a supply wire of a winding machine.

[0002]

2. Description of the Related Art Conventionally, this kind of tension control is performed by a tension device alone, a wire coming out of a supply device is wound around a tension roller, and after passing through a roller at the tip of a tension arm, a nozzle of a winding machine is used. The tension arm applies tension to the wire, and the rotation resistance of the tension roller is controlled by the rotation angle of the tension arm, thereby giving a constant tension to the wire. The rotational resistance of the tension roller controls the braking force of the friction brake by mechanical means when the tension arm is swung. Further, as an electric means, when the tension arm is swung, a rotation angle of the tension arm is detected by a sensor, and a braking force of a hysteresis brake attached to the tension roller is controlled (Japanese Patent Laid-Open Publication No. H11-163873). (See JP-A-64-41207).

[0003]

Among the above-mentioned conventional techniques, in the case of mechanical means, the brake shoes are worn because friction is applied to the tension roller.
There is a problem in that the tension set value changes during the winding operation, or that much time is required for adjustment due to variations in components. In the case of electric means, when resonance occurs in the tension arm, there is a problem that a constant tension cannot be applied to the wire. Further, as a common feature between the two, there is a problem that an appropriate tension set value cannot be set for processes other than the winding. For example, there is a case where a tension different from the tension at the time of the winding operation is required in the tying operation step and the setup step to the terminal. Also, carp
The winding diameter of the bobbin coil winding
Detect and calculate the tension at constant speed, acceleration, and deceleration
A feedback method that adjusts the force to a constant level is conceivable.
However, in that case, when the rotation speed exceeds a certain
Because the back motion cannot follow the rotation,
Rotary drive mechanism for accurate feedback
The rotation speed must be reduced.

The present invention relates to an operation mode of a coil winding machine provided with a tension device, selects from tension command data set in advance, and sets a tension according to the operation mode of the winding machine. An object of the present invention is to provide a numerical controller having a tension control function for a supply wire of a winding machine that can be applied to the supply wire.

[0005]

According to the present invention, there is provided a numerical controller having a tension control function of a supply wire of a winding machine of the present invention, and a tension roller for winding the supply wire of the winding machine, and imparting rotational resistance to the tension roller. Numerical control device for controlling a winding machine having a hysteresis brake and a tension device configured to include a tension arm supporting the supply wire, wherein a winding operation region for winding a coil and a terminal to a terminal are controlled.
Text preset in accordance with the entanglement operation area and the stop area
Storage means for storing tension command data, and control conditions are classified according to the operation mode of the winding machine. For the automatic operation mode, the tension command is stored in the storage means based on a tension command number specified immediately before the operation. First control means for outputting data, and for the manual operation mode, outputting tension command data preset in the storage means in accordance with the manual operation mode; and tension command data of the first control means. A second control means for driving the hysteresis brake of the tension device.

For the winding operation area in the automatic operation mode, the first control means controls the interpolation of the spindle shaft holding the bobbin of the winding machine based on the tension command number specified immediately before the winding operation. In the above, the changing point of the speed command for the spindle axis is divided into an acceleration area, a constant speed area, a deceleration area, a re-acceleration area and a re-deceleration area as control conditions, and tension command data set in advance corresponding to each area. Is output.

[0007] In the constant speed region of the winding operation in the automatic operation mode, the first control means performs a preliminary operation for correcting an increase in tension due to an increase in the outer winding diameter caused by winding the coil. Is subtracted from the tension command data corresponding to the constant speed region and output.

[0008]

In the automatic operation mode, based on the tension command number specified immediately before the operation, the operation is set in advance in accordance with the winding operation area for winding the coil, the entanglement operation area to the terminal, and the stop area. Output tension command data. In the manual operation mode, tension command data set in advance corresponding to the manual operation mode is output. The hysteresis brake of the tension device is driven by the tension command data. Thus, the desired tension is accurately applied to the wire.

[0009]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a numerical controller having a tension control function according to the present invention. The numerical controller according to the present embodiment includes a winding operation area for winding a coil related to the automatic operation mode, a tying operation area to the terminal, and a tension command data and a correction tension command data corresponding to each of the stop areas. The tension data storage unit 1 in which tension command data corresponding to the manual operation mode is set in advance in the operation mode, and the corresponding data from the tension data storage unit 1 based on the tension command number specified immediately before the operation. And a tension data extraction processing unit 2 that sends the data to a tension data output control unit 3 and detects a change point of a speed command to a spindle shaft that holds a bobbin of a winding machine in a winding operation area in an automatic operation mode. Each area divided into acceleration area, constant speed area, deceleration area, re-acceleration area, re-deceleration area, Using the tension command data corresponding to the stop area, particularly in the constant speed area, every time the coil is wound by one layer, the correction tension command data for correcting the increase in the tension due to the increase in the outer diameter of the coil is supplied at a constant speed. A tension data output control unit 3 for outputting tension command data obtained by subtracting from the tension command data of the area, and in the manual mode, using tension command data corresponding to the manual operation mode; D / A for driving the hysteresis brake of the tension device according to the tension command output from the section 3
A converter 4 and a hysteresis brake driving unit 5 are provided.

The tension data storage unit 1 stores an acceleration area, a constant speed area, a deceleration area, a re-acceleration area, and a change point of a speed command for a spindle shaft holding a bobbin of a winding machine in an automatic operation mode. Each area of the re-deceleration area, tension command data corresponding to the tangling operation area and the stop area, correction tension command data for correcting an increase in tension due to an increase in the winding outer diameter caused by winding the coil, And a storage unit in which tension command data corresponding to the manual mode is set in advance.

The tension data extraction processing unit 2 is located in the NC data preprocessing unit 12 for realizing the basic functions of the numerical control device, and includes command data of an NC program specially defined for this embodiment. The tension command data designated by the command is extracted from the tension data storage unit 1 and sent to the tension data output control unit 3.

The tension data output control section 3 is located in an interpolation calculation processing section 13 for performing a contour interpolation calculation for the control axis of the numerical control device. The interpolation calculation processing section is provided from the NC data preprocessing section. At the same time as performing the interpolation calculation based on the axis control data, the tension data output control unit 3 detects a changing point of the speed command for the spindle shaft that holds the bobbin of the winding machine in the winding operation area in the automatic operation mode, Using the tension command data corresponding to the acceleration region, constant speed region, deceleration region, re-acceleration region, each region divided into the re-deceleration region, the entanglement operation region, and the stop region,
In particular, in the constant speed region, every time the coil is wound by one layer, the correction tension command data for correcting the increase in tension due to the increase in the winding outer diameter is obtained by subtracting from the tension command data in the constant speed region. Using the tension command data, and in the manual mode, it outputs to the D / A converter 4 using the tension command data corresponding to the manual mode.

The D / A converter 4 converts the digital data of the applied tension command data into an analog voltage, and outputs the analog voltage to the hysteresis brake driving unit 5 as a tension command voltage.

The hysteresis brake drive unit 5 amplifies the current of the applied tension command voltage to give a brake command to a hysteresis brake 9 that applies a rotational resistance to the tension roller 8 of the tension device 6.

The tension device 6 winds a winding wire 10 around a tension arm 7 and a tension roller 8 and supplies the wound wire 10 to a bobbin. The hysteresis brake 9 attached to the tension roller 8 receives a tension command from the numerical control device of the present embodiment, applies rotational resistance to the tension roller, and applies a predetermined tension to the winding wire 10. A block shown by a broken line in FIG. 1 shows a configuration common to a conventional numerical controller that controls a winding machine, and the drive motors 18 and 1 attached to the winding machine are shown.
9, 20, 21 are used as servo control units 14, 15, 16, 17
Is controlled by

FIGS. 2 (A), (B), (C), (D),
(E) is a time chart of the automatic operation of the winding operation according to the present embodiment.

FIG. 2A is a general operation diagram of the winding machine, showing an operation of one cycle for producing an example of a coil. By analyzing the operation of the winding machine, it is possible to divide the operation relating to the supply wire into the entanglement operation area to the terminal and the winding operation area to the bobbin, and the operation not particularly acting on the supply wire as the stop area. This division is automatically performed by a preset NC program.

FIG. 2B shows a spindle shaft rotation command in the operation of the winding machine shown in FIG. 2A. As shown in FIG. 1, the spindle axis is a control axis of the present numerical controller, and the interpolation operation processing unit 13 performs an interpolation operation on the spindle axis. This indicates that the change point of the command can be detected, and the command can be divided into an acceleration area, a constant speed area, a deceleration area, a re-acceleration area, and a re-deceleration area.

FIG. 2C shows a drive command given to the hysteresis brake 9 when there is no correction tension command according to the present embodiment. In the tension data output control unit 3 of the present embodiment, tension commands corresponding to the divided acceleration region, constant speed region, deceleration region, re-acceleration region, re-deceleration region, the entanglement operation region, and the stop region. It outputs data and shows a hysteresis brake drive voltage waveform output via the D / A converter 4 and the hysteresis brake drive unit 5. In the stop region, the tension command data unique to the stop region is controlled to be output using the tension command data corresponding to the constant speed region after outputting the internally fixed timer setting time. this is,
It has a role to prevent the influence of residual magnetism on the characteristics of the hysteresis brake.

V1 to V7 in FIG. 2C are obtained by the tension data extraction processing unit 2 from one of the tension command numbers of the tension command data stored in the tension data storage unit shown in Table 1 described later. This is a brake command voltage corresponding to the extracted tension command data for each operation area.

FIG. 2D shows an increase in tension with an increase in the winding outer diameter every time the coil is wound one layer in the constant speed region of the winding operation. Actually, the increase in tension due to the increase in the outer diameter of the winding is a small amount and cannot be specified.However, depending on the product shape, the difference between the diameter at the beginning and the end of the winding is large, Due to the difference, the increase in tension cannot be ignored. This figure is an example.

FIG. 2E shows that the tension data output control unit 3 of this embodiment increases the tension with an increase in the outer winding diameter every time the coil is wound one layer in the constant speed region of the winding operation. Is subtracted from the tension command data in the constant speed region and output.
3 shows a hysteresis brake drive voltage waveform output via the / A converter 4 and the hysteresis brake drive unit 5.

The tension command data Vn taking into account the correction tension command data for each layer is obtained as Vn = V2- {Vc × (n-1)}. Here, Vc indicates correction tension command data, and n indicates the number of layers. V1 is tension command data in an acceleration region, V2 is tension command data in a constant speed region, V3 is tension command data in a deceleration region, V4 is tension command data in a re-acceleration region, V5 is tension command data in a reproduction speed region, V6 corresponds to the tension command data in the stop area, and V7 corresponds to the tension command data in the binding area.

[0025]

[Table 1] Table 1 shows an example of tension command data set in advance in the tension data storage unit 1 of the present embodiment. The tension command number is a T number given by the NC program, and is inserted before a block for performing a winding operation, a block for performing a tying operation to a terminal, or the like, so that a desired tension is obtained when each operation is performed. It is to be specified. The tension command data and the correction tension command data for each area in the automatic operation mode are designated by one tension command number, and 98 numbers T01 to T98 are used. VC, V1 to V in Table 1
7 indicate that they correspond to the tension command numbers T01 to T98, respectively. The tension command number T99 is assigned as a tension command data V _M of the manual operation mode.

FIG. 3 is a characteristic diagram of the hysteresis brake used in the tension device.

As shown in the figure, the hysteresis brake
It has a non-linear characteristic and exerts an adverse effect on uniform tension control by the electric means of the prior art. The tension command data of the present embodiment obtains the relationship between the command value and the tension by using a tension device to be applied, and is set data in consideration of this characteristic, so that there is no influence of the non-linear characteristic.

FIG. 4 is a diagram showing an example of a tension device controlled by the numerical controller of the present embodiment.

The main configuration and function will be described.
Is wound around a tension roller 42 from a supply device (not shown) via a guide roller 53, and a desired tension is applied to the wire 40 by the rotational resistance of a hysteresis brake 43 mounted coaxially here. After that, it is directed to the nozzle of the winding machine via the guide rollers 52, 51 and 50 and the roller 49 at the tip of the tension arm.

The tension arm 41 removes the looseness of the wire 40 and only detects the disconnection by the coil spring 44 for applying the back tension and the adjusting mechanisms 45 and 46 (the detector is not shown). .

The arm stoppers 47 and 48 serve to limit the driving range of the tension arm and improve operability. Reference numeral 54 in the figure denotes a mounting bracket for the tension device.

[0032]

As described above, the present invention has a function of controlling the tension of the supply wire of the winding machine,
Since the desired tension can be accurately applied to the wire, the following effects are obtained. (1) The winding state of the coil is aligned, so that the characteristics of the coil are improved. In addition, since the finished outer diameter of the coil is reduced, the size of a product using the coil can be reduced. (2) Since the set value of the tension can be set finely, an appropriate tension can be applied to various types of wires. (3) There is a problem of wire breakage as an obstacle that occurs when winding a coil, and even in the case of a tying operation to a bobbin terminal where the failure frequently occurs, a tension is applied to the wire that does not burden the wire. Therefore, the frequency of occurrence of the failure can be reduced, and the operating rate of the winding machine can be improved. (4) It is necessary to produce coils of various types of products in the same winding machine, and it is necessary to adjust the tension according to the product specifications each time. However, in the numerical control device of the present invention, Can be performed by a winding program, so that a long time-consuming operation can be completed in a short time. (5) Hiss of tension device for controlling rotation speed
Tension output to control the teresis brake
Command data is previously set in the storage means.
Slow down the rotation speed of the rotary drive mechanism
Control to keep the wire tension constant.
Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a numerical controller having a tension control function for a winding machine according to the present invention.

FIG. 2 is a time chart of the automatic operation of the winding operation according to the embodiment, (A) is a general operation diagram of the winding machine,
(B) is a diagram showing a rotation command of the spindle shaft in the operation of the winding machine, (C) is a diagram showing a drive command given to the hysteresis brake 9 when there is no correction tension command,
(D) is a diagram showing an increase in tension with an increase in the winding outer diameter, and (E) is a D / A when a correction tension command is added.
FIG. 6 is a diagram showing a hysteresis brake drive voltage waveform output via a converter 4 and a hysteresis brake drive unit 5.

FIG. 3 is a characteristic diagram of a hysteresis brake used in the tension device.

FIG. 4 is a diagram illustrating an example of a tension device controlled by the numerical controller according to the present embodiment.

[Explanation of symbols]

 Reference Signs List 1 tension data storage unit 2 tension data extraction processing unit 3 tension data output control unit 4 D / A converter 5 hysteresis brake drive unit 6 tension device 7 tension arm 8 tension roller 9 hysteresis brake 10 supply wire 11 NC program data storage unit 12 NC data preprocessing unit 13 Interpolation operation processing unit 14 First axis servo control unit 15 Second axis servo control unit 16 Third axis servo control unit 17 Fourth axis servo control unit 18 Drive motor (front-rear operation axis) 19 Drive motor ( Spindle axis) 20 Drive motor (vertical operation axis) 21 Drive motor (left / right operation axis)

Claims (3)

(57) [Claims] 1. A winding device comprising: a tension roller for winding a supply wire of a winding machine; a hysteresis brake for imparting rotational resistance to the tension roller; and a tension device including a tension arm for supporting the supply wire. A numerical control device for controlling a wire machine, comprising: a winding operation area for winding a coil, a tying operation area to a terminal, and a stop.
Tension command data set in advance according to the stop area.
Storage means for storing data, and control conditions are classified according to the operation mode of the winding machine.For the automatic operation mode, the tension command data is stored from the storage means based on a tension command number specified immediately before the operation. Output, regarding the manual operation mode, a first control unit that outputs tension command data set in advance in the storage unit according to the manual operation mode, and a tension command data of the first control unit,
And a second control means for driving a hysteresis brake of the tension device. 2. The first control means, for a winding operation area in an automatic operation mode, controls a spindle shaft for holding a bobbin of a winding machine based on a tension command number designated immediately before a winding operation. In the interpolation control, a change point of the speed command for the spindle axis is set as a control condition in an acceleration region,
2. A supply wire for a winding machine according to claim 1, wherein the wire is divided into a constant speed area, a deceleration area, a re-acceleration area, and a re-deceleration area, and tension command data set in advance corresponding to each area is output. Numerical control unit with tension control function. 3. The first control means, in a constant speed region of a winding operation in an automatic operation mode, corrects an increase in tension caused by an increase in a winding outer diameter caused by winding a coil. 2. A numerical control with a tension control function for a supply wire of a winding machine according to claim 1, wherein the correction tension command data set in advance is subtracted from the tension command data corresponding to the constant speed region and output. apparatus.