JP2002330573A - Winding device for stator core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding of thick wire by reducing frictional resistance in the lead-wire route, and stabilize quality of the winding by reducing change of the tension. SOLUTION: A lead-wire guide reel 36, which is reciprocally operated synchronizing with the reciprocal operation of a lead-wire guide cylinder 4 in the axial direction, is disposed at the lead-wire entrance 4a, formed at the lower end of the lead-wire guide cylinder 4; and a lead wire 7, which is fed from the approximately horizontal direction, is led to the side of the lead-wire entrance 4a by turning the lead-wire route at a right angle via the lead-wire guide reel 36. Frictional resistance to the lead wire 7 is reduced by disposing the lead-wire guide reel 36 at the turning part of the lead-wire route, and approximately constant tension can always be applied to the lead wire 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for a stator core, which forms a coil by directly winding a conductive wire around inner teeth of the stator core.

[0002]

2. Description of the Related Art As a device for forming a coil on a stator core, a coil is formed by directly winding the inner teeth of the stator core to form a coil, or a coil is formed by winding a conductor in advance on a formwork, and the coil is cured. There is known a method using a coil insertion device that inserts a coil into an inner groove of a stator core.
The series winding method has a drawback that workability is poor as compared with the method using the coil insertion device, but has the advantage that good performance can be obtained because the length of the loop protruding from the end face of the stator core is shortened. .

[0003] As a winding device for a stator core adopting a series winding method, the applicant of the present invention disclosed in Japanese Patent No. 2813556, a lead wire guide tube for supplying a lead wire wound around inner teeth of a stator core through a crank mechanism. By reciprocating in the axial direction and swinging the wire guide cylinder in the axial direction by a cam mechanism, a technique was proposed in which a wire supplied from a nozzle provided in the wire guide cylinder was wound around the internal teeth of the stator core.

[0004]

By the way, in the conductor introduction port for taking in the conductor of the conductor guide tube and the introduction route to the nozzle, the conductor route is changed in a substantially right angle direction. In the technology disclosed in the above-mentioned publication, the portion where the route of the conductor is changed is fed out by sliding friction. Therefore, the frictional resistance at that time causes a problem that the insulating film is easily damaged particularly in the case of a thick conductor. is there.

Further, when the conductor path is forcibly changed, even if the back tension is 0, the final tension becomes large due to frictional resistance at the changed position, so that it is difficult to wind a thick wire. . To cope with this, a technique has been proposed in which a fixed needle is attached to the wire introduction port of the wire guide cylinder to reduce the tension.However, during the reciprocating operation of the wire guide cylinder in the axial direction, the rise and fall are performed. When the tension is different and the tension is loosened, the winding of the conductive wire becomes drum-shaped, which causes a decrease in the degree of adhesion to the stator core and a decrease in the occupancy.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the frictional resistance at the conductor path changing portion, prevent damage to the insulation film of the conductor, enable thick wire winding, and further reduce tension variations. Thus, there is provided a winding device for a stator core capable of improving the occupancy of the windings and improving the heat radiation of the motor by improving the adhesion to the stator core.

[0007]

To achieve the above object, a winding device for a stator core according to the present invention is provided coaxially at the center of the stator core, swings at a predetermined angle, and reciprocates in the axial direction. An operating wire guide cylinder, and a winding device for a stator core having a nozzle attached to the tip of the wire guide cylinder and feeding out the wire in a direction substantially orthogonal to the wire guide cylinder, A conductor guide reel is provided in the conductor path changing portion on the conductor inlet side, and the conductor guide reel is reciprocated in synchronization with the reciprocating operation of the conductor guide cylinder.

In the present invention, the nozzle mounted on the tip of the conductor guide tube faces the inner teeth of the stator core, and the conductor guide tube is swung and reciprocated to wind the conductor drawn out of the nozzle around the inner teeth of the stator core. To form a coil. In this case, the wire introduced into the wire guide tube is supported by the wire guide reel arranged in the wire route changing portion on the wire inlet side, is changed in direction, and is introduced into the wire guide tube. By reducing the size, damage to the insulating coating of the conductive wire can be prevented.

Further, since the wire guide reel reciprocates in synchronization with the reciprocating operation of the wire guide tube, the tension of the wire guide tube when it is raised and when it is lowered does not change significantly, and the wire is wound up. It can be prevented from becoming drum-shaped.

According to a preferred aspect of the present invention, a wire guide reel is also provided at a wire route changing portion extending from the tip of the wire guide tube to the nozzle. According to this, the frictional resistance of the conductor can be further reduced, and damage to the insulating coating of the conductor can be more reliably prevented.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view of the winding device, FIG. 2 is a II-II sectional view of FIG. 1, FIG. 3 is an enlarged sectional view of a nozzle provided in the winding device, and FIG. FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a sectional view taken along line VI-VI of FIG.

The frame tower 3 is mounted on the base 2 of the winding device 1.
And a wire guide tube 4 is disposed in the frame tower 3 so as to penetrate vertically.
The lower and upper portions of the wire guide tube 4 are supported by bearings 5 and 6 fixed to the bottom and top surfaces of the frame tower 3 in a state where movement in the axial and rotational directions is allowed.

A lead-in port 4a for receiving the lead 7 is opened at a lower end of the lead guide tube 4 facing the base 2. On the other hand, a header 8 is mounted on the upper end of the conductor guide tube 4 protruding from the upper surface of the frame tower 3, and the header 8 faces coaxially with the center of the stator core 9. The stator core 9 is used for a DC brushless motor or the like.

A reciprocating chamber 3a in which a reciprocating section 10 for reciprocating the wire guide cylinder 4 in the axial direction is provided in the frame tower 3, and a wire guide provided above the reciprocating chamber 3a. A swing chamber 3b in which a swing portion 11 that swings the cylinder 4 in the axial circumferential direction is formed.

A rotary shaft 12 of the reciprocating unit 10 extends toward the back of the paper surface of FIG. 1 and is connected to a driving device (not shown) via a timing belt (not shown). A crank 13 is mounted on the tip of the rotating shaft 12. On the other hand, the reciprocating operation chamber 3a is provided with a conductor guide tube 4
Guide rails 14 are provided on both sides of the guide rail, and the wire guide tube 4 is fixed to the two guide rails 14 at the center of a slider 15 that slidably supports the both sides.
The slider 15 and the crank 13 are connected to the crank arm 1
6 are provided continuously.

A bracket 17 is provided upright in the swing chamber 3b, and a swing sleeve 18 constituting the swing portion 11 is rotatably supported by the bracket 17.
The wire guide cylinder 4 is spline-engaged with the swing sleeve 18. Furthermore, the swinging chamber 3b is provided with a conductor guide tube 4
(In FIG. 1, the direction from the front to the back of the paper)
The cam shaft 19 extends, and the cam shaft 19 is connected to the rotating shaft 12 via a timing belt (not shown), so that the rotating shaft 12 and the cam shaft 19 are rotated synchronously.

As shown in FIG. 2, a cam sleeve 20 is mounted on the cam shaft 19, and the cam sleeve 20 is mounted on the cam sleeve 20.
1 is formed. This cam 21 is a cam sleeve 2
0 is formed in a circular shape around the outer periphery of the cam curve portion 21a.
And the cam straight portion 21b are alternately continued. A pair of cam followers 22 bifurcated to the swing sleeve 18 are in sliding contact with the cam 21.

The pair of cam followers 22 always hold the taper rib 21c of the cam 21 in contact with the cam follower 22. That is, the pair of cam followers 22 hold the taper rib 21c in a state where the backlash is zero. In this case, the backlash between the cam 21 and the cam follower 22 can be reduced to zero by moving the cam shaft 19 in the direction of arrow A in FIG. Even if the backlash is zero, the cam 21 and the cam follower 22 always rotate in one direction, so that they can be rotated without any trouble. When the camshaft 19 rotates, the header 8 attached to the tip of the wire guide tube 4 via the cam follower 22 which sandwiches the cam 21
6, swings (reciprocates) within a predetermined angle range as shown by an arrow B in FIG. 6. That is, the cam follower 22
Is on the cam curve portion 21a, the wire guide tube 4 swings, and stops on the cam straight portion 21b, and this cycle is repeated.

As shown in FIG. 3, the header 8 comprises a cylindrical member 23 fixed to the end of the conductor guide tube 4 and a cam plate 2 rotatably mounted on the cylindrical member 23.
4, a holding plate 25 in contact with the upper surface of the cam plate 24, and a bolt 26
And a header main body 27 fixedly provided through the cylindrical member 23. Further, the header main body 27 and the holding plate 25 are fixedly mounted on the cylindrical member 23 via bolts 28.

Three guide grooves 29 are formed on the lower surface of the header main body 27 and extend radially in the radial direction at an equal angle from the center, and the base of the nozzle 30 can be freely advanced and retracted in each of the guide grooves 29. Has been inserted.

On the other hand, a spiral cam groove 31 is formed on the upper surface of the cam plate 24 so as to correspond to each guide groove 29. A cam follower 32 is inserted into each cam groove 31, and this cam follower 32 is supported by a pin 33 protruding from the lower surface of each nozzle 30. The cam plate 24 is connected to a drive mechanism (not shown). When the cam plate 24 is rotated by the drive mechanism, the cam follower 32 moves along the cam groove 31 and the nozzle 30
Are moved in and out in the radial direction as shown by arrow C in FIG. In addition, the cam plate 24 rotates together with the header main body 27, and rotates relative to the header main body 27 at a predetermined angle during the winding operation, so that the nozzle 30 moves out and along the guide groove 29. Is done.

In the center of the nozzle 30, a wire guide hole 3 is provided.
0a is formed, and a curved surface portion 30b for guiding the conductive wire 7 is formed at the base of the conductive wire guide hole 30a.

The conducting wire 7 is housed in a bobbin pack provided outside. The bobbin back is fed out from the bobbin back through a delivery device (not shown), passes through the guide hole 34, and passes through the base of the winding device 1. 2, changes the conducting wire path in a substantially vertical direction, and is introduced into the conducting wire guide tube 4 from the conducting wire inlet 4 a of the conducting wire guide tube 4, and is attached to the upper end of the conducting wire guide tube 4. The wire path is changed in a substantially horizontal direction from the upper end of the nozzle 30, guided to the wire guide hole 30 a formed in the nozzle 30, and led out of the tip of the nozzle 30. The tip of the nozzle 30 faces the inner teeth formed on the stator core 9, moves upward or downward in FIG. 1, moves the upper or lower surface of the internal teeth in the horizontal direction, and then moves The wire 7 is moved downward or upward between the teeth to wind the conductive wire 7 around the internal teeth.

An upper wire guide reel 35 is provided horizontally at a position where the wire route is changed from the upper portion of the cylindrical member 23 to the nozzle 30 side, and the wire route of the wire 7 is guided by the upper wire guide reel 35 and the nozzle 30 Is changed without difficulty.

A lower wire guide reel 36 is provided in a wire route changing portion on the wire inlet 4a side provided in the wire guide cylinder 4. This lower wire guide reel 36
Are supported by support brackets 39 projecting downward from both sides of a support plate 38 fixed to the wire introduction port 4a of the wire guide cylinder 4 with the lower wire guide reel 36 interposed therebetween. Have been. Further, flanges 4 projecting outward from both support brackets 39 are provided.
Reference numeral 0 is slidably inserted into a guide rail 42 erected on a base frame 41 formed on the base 2.
Furthermore, the upper ends of both guide rails 42 are connected via a cross plate 43. The conducting wire 7 introduced into the base 2 passes through the lower side of the lower conducting guide reel 36 and is guided to the conducting wire inlet 4a of the conducting tube 4 without difficulty.

Next, the operation of winding the stator core 9 by the winding device 1 will be described. When the rotating shaft 12 of the reciprocating unit 10 is rotated by a driving device via a timing belt (both not shown), a crank 13 fixed to the rotating shaft 12 rotates, and the crank 1
3 is connected to the slider 15 via the crank arm 16
Are supported by the guide rails 14 on both sides, and reciprocate in the axial direction (vertical direction in FIG. 1).

On the other hand, the rotation of the rotary shaft 12 is transmitted to the cam shaft 19 of the swing unit 11 via a timing belt (not shown). Therefore, the cam shaft 19 rotates synchronously with the rotary shaft 12. When the camshaft 19 rotates, a cam 21 formed on the outer periphery of a cam sleeve 20 that is axially attached to the camshaft 19,
The wire guide cylinder 4 is swung via a cam follower 22 attached to a swing sleeve 18 which is mounted on the wire guide cylinder 4.

As shown in FIG. 2, when the cam follower 22 provided on the oscillating sleeve 18 spline-engaged with the wire guide cylinder 4 is in the cam straight portion 21b of the cam 21,
The swing of the wire guide cylinder 4 is stopped. When the camshaft 19 rotates from this state, the cam follower 22 is engaged with the cam curve portion 21a, and is guided by the cam curve portion 21a to move the wire guide cylinder 4 around the shaft. When the cam follower 22 reaches the cam straight portion 21b on the opposite side of the cam 21, the swing of the wire guide cylinder 4 is stopped. When the camshaft 19 further rotates, the cam follower 22 rolls on the opposite cam curved portion 21a, and the wire guide cylinder 4
Is reversed, and is returned to the initial position, and one cycle ends.

Since the cam follower 22 always clamps the tapered rib 21c of the cam 21, there is no backlash, and the rotation accuracy in the swing direction can be improved. Also,
Since there is no backlash even if the rotation direction of the conductive wire guide cylinder 4 is reversed, generation of noise and vibration can be suppressed.
When the cam follower 22 is located at the position of the cam linear portion 21b of the cam 21, the reciprocating portion 10 reciprocates the conducting wire guide tube 4 in the axial direction (vertical direction in FIG. 1). When in the position, the nozzle 30 is exposed outside the vertical end face of the stator core 9.

As a result, when the rotating shaft 12 and the camshaft 19 make one rotation due to the synchronous rotation of the reciprocating unit 10 and the swinging unit 11, the rotating shaft 12 and the camshaft 19 are mounted on the leading end of the wire guide tube 4 via the cylindrical member 23. At the same time, the nozzle 30 provided on the header main body 27 of the header 8 that rotates integrally with the conductive wire guide cylinder 4
The conductor 7 supplied from the
Wound up.

When the conductor 7 is wound around the inner teeth of the stator core 9 by the synchronous rotation of the reciprocating unit 10 and the swinging unit 11, the cam plate 24 is rotated by a drive mechanism (not shown). The nozzle 30 connected via a pin 33 to a cam follower 32 inserted into a cam groove 31 formed in the cam groove 24 in the radial direction as shown by an arrow C in FIG. Form a coil.

The conductor 7 delivered from the nozzle 30 and wound around the internal teeth of the stator core 9 is housed in a bobbin pack provided outside the winding device 1 and housed in this bobbin pack. The conducting wire 7 is guided to the inside from the side of the base 2 through the guide hole 34, and is guided by the lower conducting guide reel 36 disposed inside the base 2, so that the conducting wire path is substantially reduced. It is changed in the vertical direction without difficulty, and is guided into the inside of the conductor guide tube 4 from the conductor introduction port 4 a opened at the lower end of the conductor guide tube 4.

The conductor 7 guided into the conductor guide tube 4
Rises along the inside of the wire guide tube 4, and the wire guide tube 4
Is guided by an upper wire guide reel 35 provided above the cylindrical member 23 mounted on the upper end of the nozzle 30, the wire path is changed in a substantially horizontal direction, and a wire guide hole 30 a formed in the nozzle 30. And is delivered to the internal teeth of the stator core 9.

The lower wire guide reel 36 is mounted on the support shaft 3.
7, the support bracket 39, and the support plate 38 are connected to the wire introduction port 4a of the wire guide cylinder 4, and when the wire guide cylinder 4 reciprocates in the axial direction, the flanges 40 protruding from both ends of the support bracket 39 are formed. Guide rail 4
2 and reciprocate, and the lower wire guide reel 36
Reciprocates in synchronization with the conductor guide tube 4, so that a substantially constant tension is always applied, and stable quality can be obtained.

As described above, since the wire guide reels 35 and 36 are provided at the portions where the wire route is changed, the wire route of the wire 7 can be changed without difficulty. As a result,
The frictional resistance is reduced, and the insulating coating of the conductive wire 7 is prevented from being damaged, so that the winding of the conductive wire 7 having a relatively large wire diameter becomes possible.

[0036]

As described above, according to the present invention,
A wire guide reel is provided in a wire route changing portion on the wire inlet side of the wire guide tube and a wire route changing portion from the tip of the wire guide tube to the nozzle, and a wire guide is provided in the wire route changing portion on the wire inlet side. Since the reels are arranged and this wire guide reel is reciprocated in synchronization with the reciprocating motion of the wire guide cylinder, frictional resistance at the wire route changing part is reduced, preventing damage to the wire insulation coating. Accordingly, a relatively thick wire can be formed.

Further, the variation in tension is reduced, the adhesion to the stator core is improved, and not only the occupancy of the winding is improved but also the quality of the winding can be stabilized. In addition, there is a secondary effect that the heat dissipation of the motor can be improved by improving the occupancy of the windings.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a winding device.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged sectional view of a nozzle provided in a winding device.

FIG. 4 is an enlarged view of a base portion of the winding device.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Winding apparatus 4 Conductor guide cylinder 4a Conductor introduction port 7 Conductor 9 Stator core 30 Nozzle 35 Upper conductor guide reel 36 Lower conductor guide reel

Claims (2)

[Claims] 1. A conductor guide tube which is coaxially arranged at the center of a stator core, swings at a predetermined angle, and reciprocates in an axial direction, and is mounted on a tip of the conductor guide tube to connect the conductor to the conductor guide. In a winding device for a stator core having a nozzle which is fed out in a direction substantially perpendicular to the cylinder, a wire path changing portion on the wire introduction port side of the wire guide cylinder,
A winding device for a stator core, wherein a conductor guide reel is provided, and the conductor guide reel is reciprocated in synchronization with the reciprocating operation of the conductor guide cylinder. 2. The winding device for a stator core according to claim 1, wherein a wire guide reel is also provided at a wire route changing portion from the tip of the wire guide cylinder to the nozzle.