JPH0452062B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a winding device for winding electric wire around a stator of a brushless motor or the like.

(Technical background of the invention and its problems) A winding device is used to wind an electric wire around a core to be wound, such as a stator of a motor. There are various types of winding devices of this kind, but the winding device that discharges the wire from the tip of a nozzle provided at the tip of the spindle and winds it around the core to be wound,
Usually, the core is wound by sliding the spindle up and down in the axial direction and rotating it in a direction perpendicular to the axis.

In this case, in many conventional winding devices, the vertical sliding and rotational motion of the spindle are generated separately using cranks, cams, etc., and these are combined to perform the spindle movement. . However, in such conventional devices, the mechanism for combining vertical sliding and rotational motion is complex, and in order to perform the combined motion with high precision, the mechanism must be designed with extremely high precision. This has the disadvantage that the entire device becomes expensive.

Furthermore, when the shape of the core to be wound becomes complicated, the movement of the spindle must be controlled accordingly, which has the disadvantage that the mechanism becomes complicated.

(Objective of the Invention) An object of the present invention is to provide a winding device in which the sliding and rotational movement of a spindle can be easily driven without complicating the structure.

(Summary of the Invention) In order to achieve the above object, the present invention discharges an electric wire from the tip of a nozzle that is fixed perpendicularly to the tip of a spindle that performs sliding and rotational movements, and A winding device for winding the electric wire around a core includes a spindle bearing that supports the spindle so as to be slidable up and down in the axial direction and rotatable in a direction perpendicular to the axis; a first fixed shaft that is fixed and protrudes in a direction perpendicular to the shaft and has a bearing fitted and fixed at the other end; and one end that is fixed to the rear end of the spindle and the other end that protrudes in a direction opposite to the first fixed shaft. a second fixed shaft having a ball attached thereto; an arc-shaped fixed cam having a groove defined according to the shape of the core to be wound in order to fit the bearing of the first fixed shaft; and a drive motor. and a drive flange having a U-shaped cross-sectional groove into which the ball of the second rotating shaft is inserted.

(Embodiments of the invention) Examples of the invention will be described in detail below based on the drawings. 1 to 3 are diagrams showing the structure of a winding device showing one embodiment of the present invention.
The figure is a front sectional view, the second figure is a plan view, and the third figure is a first
FIG. 3 is a front view of a portion viewed from the direction indicated by arrow A in the figure. A nozzle 1 for discharging an electric wire from its tip is attached almost perpendicularly to the tip of a spindle 2. The nozzle 1 and the spindle 2 are hollow, and an electric wire 13 is supplied through the hollow portion and discharged from the tip of the nozzle 1.

The core 3 to be wound has a plurality of salient poles on its inner peripheral surface, and the nozzle 1 passes between the salient poles on the spindle 2.
The electric wire is wound around the salient pole of the wire-wound core 3 by sliding movement in the axial direction of the wire-wound core 3 and rotating movement by a desired angle in the circumferential direction of the wire-wound core 3 . The wire-wound core 3 is held by a core holder 4 and slid in the radial direction of the wire-wound core 3 by another sliding mechanism (not shown).

A spindle bearing 5 is provided to support the spindle 2 so that it can slide up and down in the axial direction and rotate in a direction perpendicular to the axis. Therefore, the spindle 2 slides up and down in the direction shown by arrow B in the figure, and at the same time performs a rotational movement in the direction shown by arrow C. At the rear end of the spindle 2, there is a first fixed shaft 6 which has one end fixed to the spindle 2, protrudes in a direction perpendicular to the axial direction of the spindle 2, and has a bearing fitted and fixed to the other end, and this first fixed shaft 6. A second fixed shaft 8 is provided which protrudes on the opposite side from the shaft 6 and has one end fixed to the spindle 2 and a ball 7 attached to the other end in the same way as the first fixed shaft 6.

Note that the first fixed shaft 6 and the second fixed shaft 8 may each be fixed to the spindle 2 separately, but a hole is made through the spindle 2 and a shaft is passed through the hole to connect the spindle 2 and this shaft. They may be fixed at their contact portions, and the protruding portions may be configured to serve as the first fixed shaft 6 and the second fixed shaft 8, respectively. In this case, it is necessary to make a hole in the shaft through which the electric wire 13 is passed. The bearing 11 at the other end of the first fixed shaft 6 fixed to the spindle 2 in this manner is fitted into a groove 10 formed in the fixed cam 9 according to the salient pole shape of the core 3 to be wound. The bearing 11 can slide smoothly within the groove 10.

The fixed cam 9 is placed on the base 12,
Its shape is an arc along the circumferential direction of the wire-wound core 3, as shown in FIG.

In other words, the tip of the nozzle 1 has the spindle 2 in the first position.
The groove 1 provided in the fixed cam 9 via the fixed shaft 6 of
The motion is determined by rotating along the shape of 0. Therefore, by appropriately changing the locus of the groove 10 according to the shape of the wire-wound core 3, it is possible to prevent the winding core 3 from having a long slot in the axial direction, having a skew, or having a curved skew. You can freely wind the wire even if the wire is

A second fixed shaft 8 is used to transmit the rotational movement of the drive motor 16 in cooperation with the fixed shaft 6 to the spindle 2 as a sliding and rotational movement. The second fixed shaft 8 engages with the drive flange 14 by means of a ball 7 attached to its tip. this ball 7
When engaging the drive flange 14, the second
As shown in the figure, the drive flange 14 may be formed to have a U-shaped cross section, and the ball 7 may be movably inserted into this U-shaped groove 15.

Next, the drive motor 16 drives the drive flange 14.
The operation mode during one winding process (one cycle) performed during one rotation of the winding machine will be explained in more detail. In FIG. 3, it is assumed that the winding operation starts from the point where the bearing 11 is located at the upper right end position within the groove 10. At this time, the drive flange 14 is in a vertical position as shown, and the ball 7 attached to the tip of the fixed shaft 8 is engaged with the groove 15 at its upper position. It is assumed that the drive motor 16 rotates counterclockwise when viewed from the drive flange 14 side.

First step (the drive motor 16 rotates counterclockwise from the 0° position to the 90° position): The rotating shaft 8 is driven counterclockwise, and the fixed shaft 6 is rotated accordingly when viewed from the front side (the third (See figure) It slides horizontally to the left along the groove 10 and reaches its upper left end position. As a result, the spindle 2 rotates counterclockwise, and the core 3
Horizontal winding work is carried out on the upper part of the
At this time, the drive flange 14 is in a horizontal position.

2nd process (drive motor 16 rotates 90° counterclockwise)
(rotates from the upper end position to the lower left end position): The fixed shaft 6 is guided by the groove 10 and slides vertically downward in the groove 10 from the upper left end position to the lower left end position, and the spindle 2 moves from the upper end position to the lower end position. descend. As a result, the winding operation in the vertical direction on the left side surface of the core 3 is performed. At this time, the drive flange 14 is in a vertical position.

3rd process (drive motor 16 rotates 180° counterclockwise)
position to the 270° position): The rotation direction of the fixed shaft 8 is opposite to that in the first step, and the fixed shaft 6
is guided by the groove 10 and slides horizontally in the right direction in the groove 10 from the lower left end position to the lower right end position, and the spindle 2 is driven clockwise to perform horizontal winding work on the lower part of the core 3. be exposed. At this time, the drive flange 14 is in a horizontal position.

4th step (drive motor 16 rotates 270° counterclockwise)
position to 360° position): The fixed shaft 6 is guided by the groove 10 and slides in the groove 10 from the lower right end position vertically upward to the upper right end position, and the spindle 2 rises to the upper end position. This allows core 3
Vertical winding work is performed on the right side of the At this time, the drive flange 14 is again in a vertical position.

By engaging the ball 7 with the drive flange 14 in this way, the drive flange 14 is connected to the drive motor 1.
6 and rotates in the direction shown by arrow D in FIG. It is converted into motion and rotational motion and transmitted.

At this time, all movements of the spindle 2 are controlled by the fixed cam 9.
Since the spindle 2 is regulated by the trajectory of the groove 10 provided in the spindle 2, it is possible to accurately slide and rotate the spindle 2.

Note that when attaching the ball 7 to the second fixed shaft 8, a bearing may be interposed therebetween. Since the movement of the spindle 2 is thus regulated by the shape of the groove 10 provided in the fixed cam 9, the drive flange 14 only needs to make a simple rotational movement.

Therefore, depending on the shape of the groove 10, the spindle 2 can be made to perform complex sliding and rotational movements, so even if the wire-wound core 3 has an arbitrary skew, the electric wire can be easily wound. can.

Further, in the embodiments shown in FIGS. 1 and 2, the nozzle 1 is inserted from the inside to wind the teeth, but the present invention can also be applied to a case where the nozzle 1 is inserted from the outside to wind the wire.

(Effects of the Invention) As explained above based on the embodiments, the present invention is configured so that the simple rotational movement of the drive flange is converted into a complex movement of the spindle by the locus of the groove provided in the fixed cam. There is an advantage that the core to be wound can be accurately wound without providing a complicated motion synthesis mechanism unlike the conventional method.

[Brief explanation of the drawing]

1 to 3 are structural diagrams showing one embodiment of the present invention, in which FIG. 1 is a front sectional view, FIG. 2 is a plan view,
FIG. 3 is a front view of the portion seen from the arrow A side in FIG. 1. DESCRIPTION OF SYMBOLS 1... Nozzle, 2... Spindle, 3... Core to be wound, 4... Core holder, 5... Spindle bearing, 6... First fixed shaft, 7... Ball, 8...
Second fixed shaft, 9... Fixed cam, 10... Groove, 1
1... Bearing, 12... Base, 13... Electric wire, 1
4... Drive flange, 15... Groove, 16... Drive motor.

Claims (1)

[Scope of Claims] 1. A winding in which an electric wire is discharged from the tip of a nozzle fixed perpendicularly to the tip of a spindle that performs sliding and rotational motion, and the electric wire is wound around a core to be wound of a salient pole. A spindle bearing that supports the spindle so as to be able to slide up and down in the axial direction and to be rotatable in the direction perpendicular to the axis, and one end of which is fixed to the rear end of the spindle and protrudes in the direction perpendicular to the axis. a first fixed shaft having a bearing fitted and fixed to the other end; and a second fixed shaft having one end fixed to the rear end of the spindle, protruding opposite to the first fixed shaft, and having a ball attached to the other end. a shaft; an arc-shaped fixed cam having a groove defined according to the shape of the wire-wound core for fitting the bearing of the first fixed shaft; 2
and a drive flange having a groove having a U-shaped cross section into which the ball of the fixed shaft is inserted. 2. The winding device according to claim 1, wherein the first and second fixed shafts are constituted by one shaft passing through the spindle.