JP2000114087A - Coil winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil winding device which improves precision in peeling position for an insulating coat, for improved production efficiency. SOLUTION: A balance between the centrifugal force on an opening/closing lever 23 by the fast revolution of an AC servo motor 26 and an energizing force to the opening/closing lever 23 by a coil spring 25 opens/closes a cutter blade 24, for peeling an insulating sheath of a wire material 12. The AC servo motor 26 is used for fast/slow revolution control, acceleration/deceleration time control, and monitoring of revolution speed, resulting in precision peeling of an insulating film in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil winding device for forming an air-core coil by winding a wire having an insulating film peeled off at a winding start side and a winding end side around a winding shaft.

[0002]

2. Description of the Related Art Various types of coil winding devices have been proposed in which a wire supplied through a nozzle is tightly wound around a winding shaft rotating at a predetermined number of revolutions while applying tension to the wire rod to form an air-core coil.

[0003] In such a coil winding device, a wire is wound around a winding shaft in a state where the insulating films on the winding start side and the winding end side are peeled off. Therefore, a stripping device for stripping the insulating film is disposed on the upstream side of the winding shaft.

[0004] Generally, a cutter blade is employed in this peeling apparatus. Then, a DC motor was used as a drive source for opening and closing the cutter blade by centrifugal force and peeling off the insulating film.

That is, the cutter blade is closed at the timing when the insulating film is peeled, and the insulating film is peeled.

[0006]

As described above, conventionally, a DC motor has been used as a drive source for opening and closing a cutter blade by centrifugal force to peel off an insulating film. By controlling the applied voltage, the motor speed control for controlling the centrifugal force is performed, and the acceleration / deceleration is controlled.

[0007] For this reason, in order to peel off the insulating film at a certain size and at a certain interval, it takes time to open and close the cutter blade, and it is not possible to confirm the rotation of the cutter blade. However, it has not been possible to achieve the peeling position accuracy required for the coil, and it has been difficult to cope with high-speed winding.

In addition, since the high-speed rotation operation is continuously performed for a long time, it is necessary to replace the brush inside the motor or the motor body, and there is a problem in durability and workability.

Accordingly, an object of the present invention is to provide a coil winding device capable of improving the accuracy of the insulating film peeling position and improving the production efficiency.

[0010]

Means for Solving the Problems To achieve the above object, a first means is to form an air-core coil by winding a wire from which the insulating film on the winding start side and the winding end side has been peeled off around a winding shaft. The winding device is provided with an insulating film peeling device in which the cutter blade comes in contact with and separates from the wire rod due to a balance between a spring force and a centrifugal force due to rotation of the motor, and an AC servomotor is used as a driving means of the cutter blade. And

In order to achieve the above object, the second means is characterized in that, in the first means, a control device for switching between high-speed rotation and low-speed rotation of the AC servomotor is provided.

In order to achieve the above object, a third means is the second means, wherein the control device has a function of arbitrarily setting the acceleration / deceleration time of the AC servomotor. And

In order to achieve the above object, a fourth means is the second means, wherein the control device has a function of monitoring the number of revolutions of the AC servomotor.

According to the present invention, an AC servomotor is used as a motor for driving the cutter blade, and a high-speed and low-speed rotation control and an acceleration / deceleration time control are arbitrarily controlled by a control device.
In addition, since the rotation speed is monitored,
The insulating film is peeled off in a short time and with high accuracy.

The use of a brushless AC servomotor eliminates the need for brush replacement and makes maintenance free.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is an external view of the air core coil.
(A) is a left side view, (b) is a front view, (c) is a right side view. The air-core coil 1 has separated portions 1a and 1b indicated by hatching on its left side (winding start side) and right side (winding end side).

FIG. 2 is a configuration diagram of a coil winding device according to an embodiment of the present invention. The wire 12 supplied from the bobbin 1 is fed to a winding shaft 15 rotating at a constant speed via a peeling device 13 and a wire feed device 14.

The peeling device 13 includes a bearing 21 through which the wire 12 is passed, a rotating body 22 provided on the bearing 21, and a rotating body 22.
, A pair of open / close levers 23 pivotally supported at the tips of the blades, a cutter blade 24 attached to a free end of the open / close lever 23, a coil spring 25 for urging the open / close lever 23 to close, and a rotating body 22 via a bearing 21. An AC servo motor 26 for driving the AC servo motor 26, a control device 27 for controlling the AC servo motor 26,
A base 28 on which the entire unit is mounted, and a motor 29 for moving the base 28 in parallel with the transport direction of the wire 12 are provided.

The wire feeder 14 has a function of gripping the wire 12 from above and below as necessary and feeding the wire 12 by a fixed size.

Next, the winding operation of the coil winding device will be described. The wire 12 supplied from the bobbin 11 is sent to the fixed length by the wire feeder 14 and supplied to the winding shaft 15.
In the process, the wire rod 12 includes the bearing part 21 and the rotating body 22.
, The insulating film on the winding start side and the winding end side is peeled off by the cutter blade 24.

At this time, the base material 2 of the peeling device 13 is controlled by the command of the control device 27 with respect to the wire 12 in a stationary state.
8 while moving, the winding start side is peeled off by a certain dimension, and then moved to the winding end side. Similarly, the winding end side is peeled off by a certain dimension. Wind.

The insulating film may be peeled off by the cutter blade 24 while the wire rod 12 is being conveyed by the wire rod feeder 14.

If the AC servomotor 26 is stopped or is rotating at a low speed during the peeling operation, the cutter blade 24 is closed by the tensile force of the coil spring 25. Also,
If the AC servomotor 26 rotates at a high speed, the rotating shaft 22 rotates at a high speed, so that a centrifugal force is applied to the opening / closing lever 23, and the cutter blade 24 at its free end receives the centrifugal force outward and is opened.

In order to prevent the wire 12 from being disconnected by a shock when the cutter blade 24 comes into contact with or separates from the wire 12, the wire A is moved.
The acceleration / deceleration time of the C servo motor 26 can be freely set by the control device 27.

According to this embodiment, the AC servomotor 2
The cutter blade 24 is opened and closed by the balance between the centrifugal force of the opening / closing lever 23 and the urging force of the coil spring 25 on the opening / closing lever 23 by the high-speed rotation of 6, and the insulating film of the wire 12 is peeled off. By using the AC servomotor 26 to perform high-speed and low-speed rotation speed control, acceleration / deceleration time control, and rotation speed monitoring, the insulating film can be accurately separated in a short time.

[0026]

As described above, according to the present invention, an AC servomotor is used as a motor for driving a cutter blade, and a high-speed and low-speed rotation control and an acceleration / deceleration time control are arbitrarily controlled by a control device. Further, since the number of rotations is monitored, the insulating film can be accurately removed in a short time and a coil winding device with high productivity can be provided.

The use of a brushless AC servomotor eliminates the need for brush replacement, thereby providing a low-cost and highly durable coil winding device.

[Brief description of the drawings]

FIG. 1 is an external view of an air-core coil.

FIG. 2 is a configuration diagram of a coil winding device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air core coil 1a, 1b Peeling part 11 Bobbin 12 Wire 13 Peeling device 14 Wire feeder 15 Winding shaft 21 Bearing part 22 Rotating body 23 Opening / closing lever 24 Cutter blade 25 Coil spring 26 AC servomotor 27 Control device 28 Base 29 Motor

Claims (4)

[Claims] In a coil winding device for forming an air-core coil by winding a wire material from which an insulating film on the winding start side and the winding end side has been peeled off around a winding shaft, a balance between a spring force and a centrifugal force due to rotation of a motor is provided. A coil winding device comprising: an insulating film peeling device in which a cutter blade comes in contact with and separates from a wire; and an AC servomotor is used as a driving device of the cutter blade. 2. The coil winding device according to claim 1, further comprising a control device for switching between high-speed rotation and low-speed rotation of the AC servomotor. 3. The coil winding device according to claim 2, wherein the control device has a function of arbitrarily setting an acceleration / deceleration time of the AC servomotor. 4. The coil winding device according to claim 2, wherein the control device has a function of monitoring the rotation speed of the AC servomotor.