JP2000308315A - Winding equipment of armature and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of damages on core teeth, when wire of comparatively high rigidity is wound. SOLUTION: A wire feeding nozzle 9 movable to a rotor unit 1 and a wire guide 17, having a plurality of annular comb teeth type guide segments 18, are installed. The tip part of wire is fixed to the rotor unit 1, the nozzle is moved in the axial line direction, and the wire is inserted in a core slot 3s, while being guided with the guide segments, and stretched outside the core in the axial line direction. The wire is engaged with a jaw part 18a and an engaging part 18b which are formed in a tip part of the guide segment and bent in the peripheral direction. After that, a U-shaped coil end portion is formed by bending the wire toward the other core slot. The wire is wound, while being guided with the wire guide 17, so that edges of core teeth can be prevented from being damaged when the wire is inserted in the core slot 3a or when the coil end is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature winding device and a method thereof.

[0002]

2. Description of the Related Art There are various winding devices for winding a coil on an armature of an electric motor. For example, according to Japanese Patent Application Laid-Open No. 64-39248, the same application describes that a first core slot is connected to a second core slot. When a coil end is formed by passing a coil wire toward a core slot, there is a coil end former that is formed accurately and uniformly using a coil end former.

[0003]

However, there are motors in which a relatively thick wire is wound, and in such a motor, the rigidity of the wire may be higher than the rigidity of the core teeth. In the automatic winding operation for the armature in that case, when bending the wire from the first core slot to the second core slot to form a coil end, pulling the wire may damage the corners of the core teeth, If the opening width of the core slot is narrow, the core teeth may be damaged when the wire is inserted into the core slot.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has been made to realize a winding for an armature which does not cause damage to the core teeth even when a relatively rigid wire is used. An armature winding device for winding a coil wire on an armature, the armature supporting means for supporting the axial end of the armature, the wire A wire supply nozzle for feeding inward in the radial direction toward the armature, nozzle moving means for relatively moving the wire supply nozzle in the axial direction, the circumferential direction, and the radial direction of the armature, respectively, A coil end former movable relative to the armature in the axial direction of the armature to form a coil end from the core slot to the second core slot. A comb-shaped guide piece formed corresponding to the plurality of core teeth so as to guide the end former so as not to interfere with the core teeth when inserting the wire into the core slot; The tip of the comb-shaped guide piece so that the wire in a state of being drawn out from the axial end of the slot can be bent in the circumferential direction and bent from the circumferentially bent state toward the second core slot. And a winding method of an armature for winding a coil wire delivered from a wire supply nozzle on an armature using the wire supply nozzle. Inserting the wire into the first core slot while guiding the wire by core slot guide means; and inserting the wire into the axial end of the first core slot. And bending the wire derived from the predetermined amount in the circumferential direction of the armature by the bending engagement portion of the coil end former and guiding the wire to a position corresponding to the second core slot. The guided wire to the second
Bending the wire toward the second core slot, and bending the wire toward the second core slot.
The coil end is formed by the process of inserting the coil end into the core slot.

According to this, even when a relatively rigid wire is wound, the wire can be guided by the guide piece without touching the core teeth when the wire is inserted into the core slot. The bending engagement portion formed at the tip end of the guide piece is bent out in the circumferential direction after being drawn out from the axial end of the first core slot, and then bent toward the second core slot to be coiled. The end can be formed, and the wire can be prevented from being bent at the edge of the core teeth.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to specific examples shown in the accompanying drawings.

FIG. 1 is a partial sectional view showing a main part of an armature winding apparatus to which the present invention is applied. As shown in the figure, a core 3 and a commutator 4 are coaxially fixed to a shaft 2 of a rotor unit 1 constituting an armature.
A drive shaft of the winding device is provided on the left side of the drawing (not shown), and a collet chuck (not shown) as armature support means is coaxially supported at an end of the drive shaft. The left end of the shaft 2 in the figure is coaxially gripped by the collet chuck.

The shaft 2 in the illustrated example is a hollow shaft, and a not-shown turn as armature support means attached to an end of a fixed shaft 5 disposed on the right side of the winding device in FIG. The moving attachment protrudes into the right end of the shaft 2 and the shaft 2
Are supported coaxially and rotatably. Therefore, when the drive shaft of the winding device rotates, the rotor unit 1 can rotate.

The above-mentioned attachment is a fixed shaft 5
It is possible to cope with a plurality of types of armatures by appropriately changing the attachment. A wire fixing bracket 6 is fixed to the fixed shaft 5 and constitutes a wire end fixing means having a cylindrical shape surrounding the right end of the shaft 2 in the drawing. A cylindrical reciprocating shaft 7 is fitted on the fixed shaft 5 via a slide bearing (not shown) so that the reciprocating shaft 7 is reciprocated in the axial direction by a reciprocating actuator (not shown). At the tip of the reciprocating shaft 7, a wire fixing tubular portion 7a as a wire end fixing means formed in a cylindrical shape surrounding the wire fixing bracket 6 is integrally provided.

At a position facing the outer peripheral surface of the rotor unit 1, a wire supply nozzle 9 capable of sending out a wire 8 made of, for example, a polyester-coated conductor wound around the core 3 and serving as a coil has the same number as the number of core slots 3a. Are radially arranged with respect to the axis of the rotor unit 1. The nozzle 9 is also provided with a pipe support block 12 fixed to an end face of a driving disk 11 as a nozzle moving means capable of rotating coaxially with respect to the fixed shaft 5. The drive disk 11 is attached to the tip (rotor unit 1 side) of a guide pipe 13 supported to be able to advance and retreat, and the drive disk 11 is driven in the axial direction of the fixed shaft 5 by an actuator (not shown), thereby On the other hand, it is relatively movable in the axial direction.

The wire 8 is prepared in a wire supply magazine (not shown) in a state of being cut to a required length in accordance with a winding process, and is provided with a flexible tube connected to the rear end of the guide support block 12. 14. Note that a wire feeding mechanism (not shown) is provided on the rear end side of the flexible tube 14.

The guide pipe 13 is provided with a pipe gripping means 15 for enabling the guide pipe 13 to move integrally with the pipe support block 12.
The pipe support block 12 is provided with wire holding means 16 for integrally fixing the wire 8 to the pipe support block 12.

A cylindrical wire guide 1 serving as a coil end former is provided radially outward of the fixed shaft 5 in the drawing.
7 is provided so as to be able to reciprocate in the axial direction. At the tip of the wire guide 17, there are provided a plurality of guide pieces 18 which are formed to extend in the axial direction and have an annular comb shape. A plurality of axial slots 19 are arranged at equal intervals in the circumferential direction at an intermediate portion in the axial direction of the wire guide 17.

A plurality of mountain retainers 21 and the same number of wire retainers 22 as the number of nozzles 9 are arranged at regular intervals in the circumferential direction outward of the wire guide 17 in the radial direction in the drawing. The mountain retainer 21 is for narrowing the coil end formed on the commutator side in the radial direction through the axial slot 19, and the wire retainer 22 advances in the axial direction so that the wire guide 17 covers the core 3. When the coil end is formed on the side opposite to the commutator, the wire 8 is pressed down to the bottom of the slot through the axial slot 19.

The mountain retainer 21 and the wire retainer 22
Are arranged substantially symmetrically in the axial direction with the nozzle 9 therebetween. Similarly, a wire guide (not shown) is provided on the opposite side of the commutator of the rotor unit 1 so as to face the wire guide 17 so as to be reciprocally movable in the axial direction.

Next, the operation of the winding device thus constructed will be described below with reference to FIGS. The same number of wires 8 as the core slots 3a are used, and the wires 8 are wound a predetermined number of times between a pair of corresponding core slots 3a. Only one of them is shown and shown below.

First, as shown in FIG. 2, the wire 8 is fed out by a predetermined amount by the above-mentioned wire feeding mechanism, and the tip of the wire 8 is slightly projected from the nozzle 9. The distal end of the wire 8 is inserted into the wire fixing bracket 6 into the opening 6a formed by the same number as the nozzles 9, and the reciprocating shaft 7 is advanced to the core 3 side. , The tip of the wire 8 is pinched and fixed.
Then, the nozzle 9 is relatively moved toward the commutator 4 along the axis of the rotor unit 1 as shown by the arrow A in the figure, and the wire 8 is engaged with the slit formed in the riser 4 a of the commutator 4. Let it. Note that the wire 8 is inserted through the guide pipe 13 and the distal end is fixed as described above, so that the wire 8 is spontaneously delivered by moving the nozzle 9.

Next, the nozzle 9 is moved in the axial direction as shown by the arrow B in FIG. 3, but in the core slot 3a in the illustrated example, the nozzle 9 extends obliquely with respect to the axis as shown in the figure. The rotor unit 1 is also rotated by a predetermined angle in the direction of the arrow C in order to move the nozzle 9 along the core slot 3a.

At this time, the wire guide 27 provided on the side opposite to the commutator 4 is advanced in the axial direction to position the core 3 so as to protect the core slot 3a of the core 3 on the commutator 4 side. First core slot 3a as a start of winding so as not to come off riser 4a
The wire 8 is inserted into the inside. Thus, when the wire 8 is inserted into the first core slot 3a, it is possible to prevent the wire 8 from directly contacting the core teeth 3b, so that a relatively thick and highly rigid wire 8 is used. However, the core teeth 3b are not damaged. And
The wire guide 27 retreats to the side opposite to the commutator, and the wire 8 is wound around the first core slot 3a together with the nozzle 9.

Thereafter, as shown in FIG. 3, the wire guide 17 on the commutator 4 side is advanced in the direction of arrow D to a position protruding from the left section of the core 3 by a predetermined amount, and as shown by the imaginary line in FIG. The wire 8 is positioned so as to sandwich the wire 8 between the tips of the adjacent guide pieces 18. At that time, the wire presser 22 is pushed into the wire guide 17 through the axial slot 19 of the wire guide 17 and the commutator 4
Side wire 8 is pressed inward in the radial direction. Thereafter, the nozzle 9 is connected to the rotor unit 1 and the wire guide 17.
5 is moved relatively in the circumferential direction as shown by an arrow E in FIG. 5, and the nozzle 9 is positioned between the guide pieces 18 corresponding to the different core slots 3a as the second core slots.

By the way, as shown in FIG. 1, the guide piece 18 according to the present invention
And an engaging portion 18b formed at an acute angle between the jaw portion 18a and the jaw portion 18a is provided as a bending engaging portion. Therefore, when shifting from the state of FIG. 4 to the state of FIG. 5, the wire 8 engages with the jaw 18a of the guide piece 18 corresponding to the first slot of the core slot 3a and is bent in the circumferential direction. .

Then, by moving the nozzle 9 relative to the wire guide 17 in the above-mentioned arrow E direction, the wire 8 is placed on each jaw 18b extending between the first and second core slots. And is formed along the guide piece 18. Further, the wire guide 17 is moved in the direction of arrow F in FIG. 6 to be positioned so as to protect the core teeth 3b. Next, the guide pipe 13 and the pipe support block 12 are integrated by the pipe holding means 15, and while the wire 8 is fed out by the support block 12, the nozzle 9
Is moved a predetermined amount outward in the radial direction. Thereafter, the wire 8 in the guide pipe 13 is pressed and fixed by the wire gripping means 16, so that the straight wire 8 in the guide pipe 13 is led out from the tip of the nozzle 9 by a predetermined amount in the straight state. Becomes

Next, as shown in FIG. 6, while keeping the rotor unit 1 and the nozzle 9 as they are, the wire guide 17 is relatively retracted as shown by the arrow F in the figure. Thereafter, the mountain presser 21 is moved in the direction of arrow G in FIG. 6 to press the coil end of the wire 8 toward the axial center, and the wire 8 in the core slot 3a is moved to the core slot 3a.
To the bottom side of the. Also wire press 2
The wire 2 presses the wire 8 in the radial direction, thereby preventing the wire 8 from coming out of the core slot 3a. Thereafter, by moving the nozzle 9 in the direction of arrow F in FIG. 6 while moving the nozzle 9 radially inward of the core 3, the straight portion of the wire 8 derived from the nozzle 9 is inserted into the core slot 3 a while falling down. Can be.

By moving the nozzle 9 in the axial direction along the core slot 3a with the wire guide 17 retracted as described above, the nozzle 9 side of the wire 8 is moved in the direction indicated by the arrow H in the drawing. It is pulled toward the two slots 3a. The wire 8 having a relatively high rigidity generally faces in the direction of the second slot so as to substantially retain the inverted L-shape of the portion indicated by the arrow A in FIG. 7 and is indicated by a solid line in FIG. It becomes a U-shaped state. Therefore, in the step of inserting the wire 8 again into the core slot 3a while forming the above-mentioned U-shaped coil end portion 24, the wire straight portion 8a of FIG. 7 enters the core slot 3a while maintaining a straight state. Thus, even if the wire 8 having a relatively large thickness and high rigidity is used, the wire 8 does not strongly hit the edge of the core tooth 3b, and the edge of the core tooth 3b is not damaged.

In this manner, the coil end portion is formed on one axial side portion of the core 3. By performing a similar series of steps, the coil end portion is formed on the axial side portion of the core 3 on the commutator 4 side. A similar coil end portion can be formed. Thereafter, by repeating the same process, the armature winding operation can be performed while forming the coil end portion outside both ends in the axial direction of the core 3. . In addition, as for each movement of the rotor unit 1, the wire guide 17 and the nozzle 9 in each of the above steps, any one may be moved as long as the relative relationship is maintained, and the above embodiment is an example. is there.

[0026]

As described above, according to the present invention, even when a relatively rigid wire is wound, the wire is guided by the guide piece of the coil end former and inserted into the core slot. It is possible to prevent the core teeth from being damaged by the inserted wire, and to extend in the circumferential direction after extending from the first core slot by the bending engagement portion formed at the tip of the guide piece. Bends, and from the state bent in the circumferential direction to the second
Can be bent toward the core slot to form a coil end, so that it can be prevented from bending at the edge of the core teeth and prevent the edges of the core teeth from being damaged when forming the coil ends. it can.

[Brief description of the drawings]

FIG. 1 is a fragmentary side view showing an essential part of an armature winding device to which the present invention is applied.

FIG. 2 is a partial side view showing the operation of a winding according to the present invention.

FIG. 3 is a partial side view showing the operation of a winding according to the present invention.

FIG. 4 is a perspective view of a main part showing an operation procedure of a winding according to the present invention.

FIG. 5 is a perspective view of a main part showing an operation procedure of a winding according to the present invention.

FIG. 6 is a perspective view of a main part showing an operation procedure of a winding according to the present invention.

FIG. 7 is a plan view of an essential part showing a coil end shape of a winding according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 rotor unit 2 shaft 3 core, 3a core slot 4 commutator, 4a riser 5 fixed shaft 6 wire fixing bracket 7 reciprocating shaft, 7a wire fixed cylindrical portion 8 wire 9 nozzle 11 driving disk 12 pipe support block 13 guide pipe 14 Flexible tube 15 Pipe gripping means 16 Wire gripping means 17 Wire guide 18 Guide piece, 18a jaw, 18b engaging portion 19 Axial slot 21 Mountain hold 22 Wire hold 27 Wire guide 28 Guide piece

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenichi Aramaki 1-2681, Hirosawa-cho, Kiryu-shi, Gunma F-term in Mitsuba Co., Ltd. 5H615 AA01 BB01 BB14 PP02 PP08 PP13 PP14 PP26 QQ03 QQ06 QQ12 QQ27 SS04 SS10

Claims (2)

[Claims] 1. An armature winding device for winding a coil wire on an armature, comprising: an armature supporting means for supporting an axial end of the armature; A wire supply nozzle for feeding inward in the radial direction toward the armature, nozzle moving means for relatively moving the wire supply nozzle in the axial direction, the circumferential direction, and the radial direction of the armature, respectively, A coil end former movable relative to the armature in the axial direction of the armature to form a coil end from the core slot to the second core slot. A comb-shaped guide formed corresponding to the plurality of core teeth so as to guide the wires so as not to interfere with the core teeth when the wires are inserted into the core slots. The wire extending from the axial end of the first core slot can be bent in the circumferential direction and bent from the circumferential direction toward the second core slot. A winding device for an armature, comprising: a bending engagement portion formed at a distal end portion of a comb-shaped guide piece. 2. An armature winding method for winding a coil wire sent from a wire supply nozzle on an armature using the wire supply nozzle, wherein the wire is guided by core slot guide means. A step of inserting the wire into the first core slot; a step of leading out the wire from the axial end of the first core slot by a predetermined amount; Bending the armature in the circumferential direction of the armature and guiding the armature to a position corresponding to a second core slot; bending the guided wire toward the second core slot; Forming a coil end by bending the second core slot toward the second core slot and then inserting the bent end into the second core slot. Winding method of the child.