JPH02261037A - Winding device for rotary electric machine - Google Patents

Abstract

PURPOSE:To reduce shock applied on an electric wire upon winding the wire and eliminate the damage of insulation by driving a wire drum in a synchronizing manner with the wire winding speed to supply the electric wire with a constant tension. CONSTITUTION:When the position of a drum 21 of a tension adding mechanism 18 is changed due to the fluctuation of the speed and the like of an electric wire 5, an output signal from a tension detector 24 is changed and a speed commanding signal for a wire drum 19 is changed. When the rotating speed of a winding shaft 7 is increased, the mounting angle of a cam 10 is advanced and the output signal from a rotational position detector 11 is outputted in an earlier period. Accordingly, a speed command, inputted into the speed controller 28 of the wire drum 19, is also changed to correct the rotating speed of the wire drum 19 whereby the electric wire, having a given tension, is supplied stably to the reel 1 at all times. According to this method, shock due to the tapping of the electric wire against the reel 1 may be reduced and the deviation of the winding of the electric wire in the reel and the like may be eliminated upon winding whereby the damage of insulation, the local elongation and the like of the electric wire may be eliminated and the automation as well as the speed-up of wire winding work may be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a coil winding device for use in a rotating electric machine.

(Prior Art) Conventionally, when winding a coil to be inserted into the iron core of a rotating electrical machine, as shown in FIG. An operator holds the electric wire 5 which is rotated and wound around a separately placed wire drum 4, and winds it around the winding form 1 while adjusting the tension.

(Problem to be Solved by the Invention) According to such a conventional wire winding device, the speed at which the wire 5 is pulled out from the wire drum 4 is different when the longitudinal direction of the winding form 1 is horizontal and when it is vertical. There is a big difference, especially when transitioning from the horizontal state to the vertical state, the acceleration of the wire 5 pulled out from the wire drum 4 is maximum, and furthermore, before and after the horizontal state, there is a phenomenon in which the winding form 1 slams the wire 5, causing the wire 5 is subjected to a large shock, the wire may become unwound within the winding form 1, insulation damage may occur, and local elongation of the wire may occur.These phenomena become more pronounced as the winding speed increases, and the winding This hindered the speeding up and automation of wire work and caused a decline in the quality of the coils.

The purpose of the present invention was to solve these problems by minimizing the shock applied to the wires,
It is an object of the present invention to provide a winding device for a rotating electric machine that can be automated at high speed.

[Structure of the Invention] (Means for Solving the Problems) A winding device for a rotating electric machine of the present invention includes a winding device for a rotating electric machine, which has a winding form attached to one end of the rotating shaft in accordance with the rotational speed of the rotating shaft. A cam with a cam installation position adjustment mechanism whose angle changes, a rotational position detector that detects the rotational position by contacting the outer circumference of this cam, and an electric wire wound around the winding form between the wire drum and the winding form. and a tension applying mechanism having a tension detector that applies a constant tension to the wire and detects the tension, and applies a constant tension to the wire being wound based on tension signals from the rotational position detector and the tension detector. The feature is that the rotation of the wire drum drive motor is controlled.

(Function) According to the winding device of the present invention, when the speed of the electric wire wound on the winding form differs depending on the rotational position of the winding form, the output signal of the rotational position detector that is in contact with the outer periphery of the cam is detected on the wire drum. In addition to synchronizing the rotational speed of the drive motor, the rotational speed of the wire drum drive motor is controlled by adding an output signal generated from a tension detector of a tensioning device that applies a constant tension, and furthermore, the rotational speed of the winding form is controlled by synchronizing the rotational speed of the drive motor. By changing the set angle of the cam according to changes in speed, and by outputting a signal from the rotation detector earlier at high speeds, the wire that is wound around the winding form can be adjusted regardless of the winding speed. Winding work can be performed with constant tension applied at all times.

(Example) An example of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, an elongated winding form 1 is attached to a winding shaft 7 of a winding machine 6, and is rotated by a drive motor 8.

A cam 10 having a cam setting position adjustment mechanism 9 is attached to one end of the winding shaft 7, and the cam 10 is in contact with the outer circumference of the cam 10.
A rotational position detector 11 for detecting the zero rotational position is attached. The cam setting position adjustment mechanism 9 is as shown in FIG.
Speed detection arm 1 rotatably supported on a shaft 12 in the middle
3, a rotational speed detection weight 14 is attached to one end of this speed detection arm 13, and a balance spring 15 is stretched between it and the shaft 12,
The other end is inserted into a groove 16 for changing the mounting angle of the cam 10.

Further, the electric wire 5 to be wound around the winding form 1 is supplied from a wire drum 19 through a wire guide 17 and a tension applying mechanism 18 . This tension applying mechanism 18 includes a column 22 whose one end is rotatably supported by a shaft 20 and whose other end is pivotally supported by a drum 21 around which an electric wire 5 is wound. An air cylinder 23 for applying a constant tension to the support column 22 and a tension detector 24 for detecting the tension state based on the inclination of the support column 22 are mounted opposite to each other with the support column 22 in between.

A servo motor 25 and a rotary generator 26 are attached to the rotating shaft of the wire drum 19.

As shown in FIG.
7, and its output drives the servo motor 25 to rotate the wire drum 19 and send out the electric wire 5.

Further, the rotational position detector 11 provided on the winding shaft 7 applies the change in the speed of the electric wire 5 pulled by the rotation of the winding form 1 as a speed command to the speed control device 28 of the wire drum 19. A small speed command is issued near the horizontal position in the longitudinal direction, and a large speed command is issued near the vertical position.

Further, the mounting angle of the cam 10 that provides the rotational position of the winding shaft 7 to the rotational position detector 11 changes according to changes in the rotational speed of the winding shaft 7, and as the rotational speed of the winding shaft 7 becomes faster, the cam 10 The mounting angle of the wire drum 19 is advanced, and the speed command to the wire drum 19 is outputted earlier.

Next, the operation of the above configuration will be explained.

When the winding machine 6 starts rotating by the drive motor 8, the winding shaft 7
A rotational speed command of the wire drum 19 corresponding to the detected rotational angle is outputted from the rotational position detector 11 by the cam 10 provided at the cam 10 . In response to this command, the wire drum 19 starts rotating via the speed control device 28 to supply the electric wire 5.

On the other hand, the electric wire 5 is pulled by the winding form 1 starting to rotate, and attempts to pull the drum 2 of the tension applying mechanism 18 in the direction of arrow A. However, since the wire drum 19 has already started rotating due to the signal from the rotational position detector 11 of the cam 10 and is supplying the electric wire 5, the drum 21 of the tension applying mechanism 18 remains in its original position and is always kept constant. The electric wire 5 is supplied to the winding form 1 under tension.

Also, the rotational position of the elongated winding form 1 changes, and the winding form 1
Near the water position in the longitudinal direction, the speed of the electric wire 5 is the slowest, the output signal from the rotational position detector 11 of the cam 10 also becomes small, and the rotation of the wire drum 19 becomes slow. Similarly, near the vertical position in the longitudinal direction of the winding form 1, the speed of the electric wire 5 is fastest and the output signal from the rotational position detector 11 is the largest, so the wire drum 19 rotates faster. In this way, the wire drum 19 operates in synchronization with the speed of the electric wire 5 depending on the rotational position of the winding form 1.

Further, as the electric wire 5 is wound around the winding form 1, the winding diameter of the winding form 1 gradually increases, and the pulling speed of the electric wire 5 per rotation becomes faster. On the other hand, as the wire 5 is wound around the winding form 1, the amount of wire 5 on the wire drum 19 decreases, the winding diameter of the remaining wire becomes smaller, and the feeding speed of the wire 5 per rotation becomes slower. I'm going to go. At this time, the drum 21 of the tension applying mechanism 18 is pulled in the direction of arrow A. When the drum 21 moves in the direction of arrow A, the tension detector 18
The output signal of the wire drum 19 changes, and the speed command signal to the wire drum 19 is increased. For this reason, wire drum 1
9 increases the speed and supplies the electric wire 5 in synchronization with the speed of the winding die.

Moreover, when trying to increase the winding speed, when the speed of the winding shaft 7 is increased, the wire drum 19 is driven by the signals output from the cam 10 and the rotational position detector 11, and the wire 5 is supplied to the winding form 1. The drum 21 of the tension applying mechanism 18 begins to swing significantly, and the electric wire 5 begins to receive a shock. At this time, when the winding shaft 7 begins to rotate at high speed by the cam setting position adjustment mechanism 9 provided on the cam 10, the weight 1 attached to the tip of the speed detection arm 13
4, the speed detection arm 13 begins to move in the direction of arrow B. This movement is transmitted to the cam 10 via the fulcrum of the shaft 12, and the speed detection arm 13 inserted into the mounting angle changing groove 16 of the cam 10 attempts to move in the direction of arrow C. This operation causes the cam 10 to open the groove 16 for changing the mounting angle.
It will move along the shape of , and it will end up rotating in the direction of the arrow. At this time, the cam 10 moves in a direction that is advanced relative to the rotating direction of the winding shaft 7. Therefore, as the rotation of the winding shaft 7 becomes faster, the mounting angle of the cam 10 moves in the forward direction relative to the rotational direction, and the faster the rotation of the winding shaft 7 becomes, the earlier the output signal from the rotational position detector 11 becomes. As a result, the delay in the operation of the wire drum 19 can be eliminated.

In this way, when the position of the drum 21 of the tension applying mechanism 18 changes due to speed fluctuations of the electric wire 5, etc., the output signal from the tension detector 24 changes, which acts to increase the speed command signal to one wire drum. Further, as the rotational speed of the winding shaft 7 increases, the mounting angle of the cam 10 advances, and the output signal from the rotational position detector 11 is outputted earlier. For this purpose, wire drum 1
The speed command input to the speed control device 28 of 9 also changes,
The rotational speed of the wire drum 19 is adjusted so that the wire 5 with constant tension is always stably supplied to the winding form 1.

As described above, according to this embodiment, the wire drum 19 is driven in synchronization with the wire winding speed of the winding form 1 and the electric wire 5 with constant tension is supplied, so that the electric wire 5 hits the winding form 1. Since there is less shock and there is no miswinding of the electric wire 5 in the winding form 1, there is no insulation damage or local elongation of the electric wire 5, making it possible to automate and speed up the winding work.

[Effects of the Invention] According to the winding device for a rotating electrical machine of the present invention, the wire is smoothly supplied from the wire drum in synchronization with the rotational speed of the winding former, so that less shock is applied to the wire. , winding misalignment of the wire within the winding form is eliminated, and problems such as insulation damage and local elongation of the wire are also eliminated, making it possible to automate and speed up the winding work.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a winding device for a rotating electric machine showing an embodiment of the present invention, FIG. 2 is a partial cross-sectional side view of a cam setting position adjustment mechanism applied to FIG. 1, and FIG. ■-■ arrow view in Figure 2,
FIG. 4 is a block diagram of the control circuit shown in FIG. 1, and FIG. 5 is a block diagram of a conventional winding device. 14... Weight, 1 18... Tension adding mechanism. 24...Tension detector. 27... Servo controller.

Claims (1)

[Claims] In a winding device for a rotating electric machine, a winding device is installed on a rotating shaft and rotated by a drive motor, and a coil is manufactured by winding an electric wire wound around a wire drum around the winding form. , a cam with a mechanism that changes its mounting angle with the rotating shaft in response to the rotational speed of the rotating shaft, and a rotational position detector that contacts the outer circumference of the cam to detect its rotational position are provided. The drum has a drive motor on its rotating shaft, and a tension applying mechanism that is located between the wire drum and the winding form and has a tension detector that applies a certain tension to the electric wire wound around the winding form and detects the tension. A winding device for a rotating electric machine, characterized in that the rotation of a wire drum drive motor is controlled so as to apply a constant tension to the wire being wound in accordance with the output signals of the rotational position detector and the tension detector. .