JPH067738B2 - Armature winding device - Google Patents

Description

The present invention relates to a winding device for winding a multi-slot armature.

[Prior Art] Conventionally, a winding device of this type is generally provided with a former that holds an armature and a flyer that rotates around the armature and winds a coil in a slot of the armature. When the armature is wound using this device, the armature is fixed to the former to expose the slot where the coil should be wound, the flyer is rotated parallel to the slot, and the coil is guided into the slot and wound. Make a line.

[Problems to be Solved by the Invention] However, when winding is performed using the above-described conventional winding device, as shown in FIG. 8, particularly in the coil end portion of the armature 1 on the side where the commutator is not provided. It is unavoidable that the coil C is piled up in multiple layers to cause swelling. The ratio of the height h0 of the coil end portion to the total length of the product is not small, so that it is necessary to lengthen the same pitch of the bearings of the motor by a dimension corresponding to h0, which causes a problem that the product becomes large.

Therefore, the present invention, when winding the armature,
An object of the present invention is to provide a winding device capable of restricting the rise of the coil at the coil end portion on the side opposite to the commutator side and reducing the height of the coil end portion of the armature.

[Means for Solving the Problems] To explain the configuration of the present invention with reference to FIGS. 1 and 2, the winding device holds the armature 1 by sandwiching the peripheral surface from both sides and crossing the peripheral surface. The first former 2 having guide surfaces 23 and 24 for guiding the coil in the slot 11 formed in the axial direction, and the slot 11 at the symmetrical position in the radial direction by rotating around the armature 1 in parallel with the slot 11.
The flyers 31 and 32 around which the coil is wound are provided, and the second former 4 is provided to face the end surface of the armature 1 on the side opposite to the commutator 13 with a predetermined gap therebetween. The second former 4 is formed with a flat surface facing the end surface of the armature 1 to serve as a restriction surface 42 for restricting the rising of the coil at the end surface of the armature 1, and the outer peripheral surface of the second former 4 is restricted to the restriction surface 42. Is formed as a sliding surface 43 that continues smoothly.

[Operation] In the above winding device, when the flyers 31 and 32 are rotated around the armature 1, the coils are guided to the guide surfaces 23 and 24 of the first former 2 along with the rotation of the flyers 31 and 32, and the coil of the armature 1 moves. It is inserted into the slot 11.

At this time, on the end surface of the armature 1 on the side opposite to the commutator 13, the second formers 40 are arranged to face each other at a predetermined interval, so the coil is wound while wrapping around in the radial direction, and the restriction surface of the second former 4 is provided. The height is regulated by 42. As a result, there is no local swelling and the shape is flat, and the height of the coil end portion of the armature 1 is regulated to be low.

Further, the winding is smoothly performed by being guided by the sliding surface 43 of the second former 4, and no catching occurs.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 2 is a pair of molds 21 and 22.
The first former is composed of the molds 21 and 22, and recesses each having a semicircular cross section are formed in the intermediate portions of the facing surfaces of the molds 21 and 22, and the armature 1 is sandwiched between these recesses. In this state, the slots around which the coil is to be wound are exposed on the upper and lower peripheral surfaces of the armature 1 which is not sandwiched.

The upper half and the lower half of the facing surfaces of the molds 21 and 22 are inclined surfaces approaching in the facing direction toward the intermediate portion, and serve as guide surfaces 23 for guiding the coils into the slots 11 of the armature 1. Has become. Also, the mold 2
Similarly, both side surfaces of the armatures 1 and 22 are also inclined toward both end surfaces of the armature 1 (see FIG. 2) and serve as guide surfaces 24 when the coil is wound between the exposed slots 11.

A bearing portion 25 is provided at the center of each outer wall of the molds 21 and 22.
(Only one is shown) is formed, and the rotary shaft 2 is attached to each bearing portion 25.
One end of 6, 27 is supported. These shafts 26, 2
The rod-shaped flyers 31 and 32 extending in the direction orthogonal to the shafts 26 and 27 are fixed to the outer periphery of 7. Flyer 3
Reference numerals 1 and 32 are slightly bent from the central portion toward the first former 2 direction, and rollers 33 and 34 are fixed to the distal ends thereof so that coils are fed from the rollers 33 and 34. . Then, by rotating the shafts 26 and 27, the flyers 31 and 32 rotate around the armature 1 in parallel with the slot 11, and the coil is inserted into the slot 11 of the armature 1. The flyers 31 and 32 can operate independently or simultaneously, and can wind the same or different slots 11.

The armature 1 has a shaft 12 extending therethrough (second
In the drawing, a commutator 13 is fixed to one end of the shaft 12, and this one end is chucked by a holder (not shown).

The commutator 13 is provided on the outer periphery of the end face on the armature 1 side.
It has a plurality of claw portions 14 for locking the coil. The outer periphery of the commutator 13 is covered with a tubular cap 5, and the position of the notch 51 formed at the end of the cap 5 on the armature 1 side is changed as necessary to expose the corresponding claw portion 14. I am doing it.

The second former 4 has a thick disk shape and is supported by a shaft 41, and the other end of the shaft 12 of the armature 1 is inserted into a through hole formed in the center of the plate surface. An end surface of the second former 4 on the armature 1 side is formed as a flat surface facing the end surface 15 of the armature 1 at a predetermined interval to form a restriction surface 42. Also,
The outer peripheral surface of the second former 4 is formed as a sliding surface 43 having a semicircular cross section without an angle that smoothly follows the restriction surface 42.

FIGS. 3 to 6 show the steps for winding the armature 1 by the flyer 31 using the above apparatus.

In the first step, first, the armature 1 is positioned by the first former 2, the second former 4, and the cap 5 as shown in FIGS. 3 and 4, and the flyer 31 is rotated clockwise a predetermined number of times to turn the coil. Is wound between a pair of upper and lower exposed slots 11.

In the second step, the rotation of the flyer 31 is stopped and the cap 5 is rotated to expose the claw portion 14 to which the coil is connected from the notch 51 of the cap 5 (FIG. 5).

In the third step, the flyer 31 is rotated and the claw portion 14 is rotated.
After the flyer 31 is stopped, the cap 5 is rotated to cover the claw portion 14, and at the same time, the first former 2 is loosened to rotate the armature 1 around the axis and then the winding is performed. Expose another pair of slots 11 that carry wires.

Hereinafter, the above first to third steps are repeated.

In this winding step, in the coil end portion of the armature, the coil winding height in the armature axial direction is restricted by the restriction surface 42 of the second former 4, so that the second former 4
Of the sliding surface 43 and the guide surface 24 of the first former 2
The coil is wound around the armature in the radial direction while being guided by. Therefore, the coil end part of the armature 1 is
As shown in Fig. 7, it has a flat shape, which is conventional (Fig. 8).
As described above, the local rise does not occur, and the coil end height (h) can be made lower than in the conventional case (h0).
Further, the winding is smoothly performed by being guided by the sliding surface 43 that smoothly follows the restriction surface 42 of the second former 4, and the coil is not caught during winding.

In the present invention, after the winding is performed in this way,
In order to maintain the shape of the coil end part, for example, the following (1)
It is desirable to fix the coil by the method shown in (3) to (3).

(1) A self-bonding electric wire is used for the coil, and the coil is fused and fixed.

(2) The coil end is impregnated with resin and fixed.

(3) The coil end portion is fixed by resin molding.

[Advantages of the Invention] As described above, the winding device of the present invention has the second former, and the second former has a restriction surface facing the armature end surface at a predetermined interval and a sliding surface following the restriction surface. Therefore, the rise of the coil at the coil end portion of the armature is restricted, and the height of the coil end portion can be reduced. Therefore, the pitch between the bearings of the motor can be shortened, and the product can be downsized.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is an overall perspective view of a winding device, FIG. 2 is a plan view of the winding device, and FIG.
FIGS. 6 to 6 are views showing a winding process, FIG. 7 is a side view of a coil end portion of an armature which is wound by using the apparatus of the present invention, and FIG. 8 is a view showing winding by a conventional method. It is a coil end part side view of the performed armature. 1 ... Armature 11 ... Slot 13 ... Commutator 2 ... First former 31, 32 ... Flyer 4 ... Second former

Claims (1)

[Claims] 1. A first former having a guide surface for sandwiching a peripheral surface of an armature from both sides and holding the armature and guiding a coil into a slot formed in an axial direction across the peripheral surface, and a first former parallel to the slot. A flyer that rotates around an armature and winds a coil between slots at radially symmetrical positions; and a second former that is arranged opposite to the end surface of the armature on the side opposite to the commutator at a predetermined interval. The second former is formed with a flat surface facing the armature end surface to serve as a restricting surface for restricting the rising of the coil on the armature end surface, and the second former
A winding device for an armature, wherein the outer peripheral surface of the former is a sliding surface that smoothly follows the regulation surface.