JP2000270524A - Winding tool for motor stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small high-output motor by eliminating a dead zone in a slot, when a nozzle of a supply-reel machine passes by and enlarging a winding cross-sectional area. SOLUTION: A winding tool 11 includes a holding part 15 linked with movement of a nozzle 23 around a stator 1 of a motor for feeding a wire(W) and holding the wire(W) fed from the nozzle 23, a carrying means for carrying the grasped part of the wire(W) to the prescribed position of an outer circumferential part of the stator 1, while the wire(W) is still being held, and an opening part at the holding part 15 for releasing the wire(W) in a held state, when the wire(W) is carried to the given position. The winding tool 11 is provided around the stator 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor stator winding method for winding an electric wire around a motor stator, a winding device thereof, and a motor stator. The present invention relates to a motor stator winding method for increasing the output of a motor, a winding tool thereof, and a motor stator.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a conventional method of winding a motor stator. In the figure, the stator 1
The electric wire W is wound around the wound portion 3 of the slot 2. The feeder 21 has a pair of nozzles 23 projecting in the opposite direction above the shaft 22 through which the electric wire W is inserted. The shaft 22 penetrates the inside of the stator 1 in the vertical direction and moves in the horizontal direction. A swinging motion of reciprocating a predetermined angle is performed.

In order to wind the electric wire W using the feeder 21, the shaft 22 is vertically moved while the electric wire W is being drawn out from the opening 24 of the nozzle 23, and is reciprocated in the horizontal direction. Accordingly, the nozzle 23 moves through the inside of the slot 2 and circulates in a fixed direction around the wound portion 3 of the slot 2 while drawing a rectangular frame-like trajectory. The electric wire W can be wound around.

[0004]

However, in the conventional winding method, the wire W drawn out from the nozzle 23 is wound around the wound portion 3 while moving the nozzle 23 through the slot 2. Therefore, the hatched portion in the slot 2 shown in FIG. 7 is a dead zone 6 through which the nozzle 23 can move and cannot be wound. As a result, the number of turns of the coil 5 in which the electric wire W is wound around the wound portion 3 of the stator 1 is naturally limited, and the winding cross-sectional area of the coil 5 cannot be increased beyond a certain value. By letting
It was unable to meet the industry's demand for a smaller motor.

Accordingly, the present invention provides a motor stator which eliminates a dead zone of a slot due to the passage of a nozzle of a feeder and increases a winding cross-sectional area of a coil, thereby obtaining a small and high-output motor. An object of the present invention is to provide a winding method, a winding tool, and a motor stator.

[0006]

According to a first aspect of the present invention, there is provided a method for winding a motor stator, comprising using a winding tool interlocked with a circulating nozzle to grip an electric wire fed from the nozzle, Next, the gripped electric wire is transferred in the outer peripheral direction of the motor stator, and when the electric wire is transferred to a predetermined position, the gripping of the electric wire is released.
It is wound around the motor stator.

According to a second aspect of the present invention, there is provided the winding tool for the motor stator, which is disposed around the motor stator and cooperates with the movement of the nozzle for feeding the electric wire, and the electric wire fed from the nozzle. A gripper for gripping the wire, a transfer means for transferring the gripped portion of the electric wire to a predetermined position in the outer peripheral direction of the motor stator while holding the electric wire, and a release for releasing the grip of the electric wire transferred to the predetermined position. Means.

According to a third aspect of the present invention, there is provided a motor stator winding tool wherein the motor stator winding tool according to the second aspect is disposed at least above and below the motor stator. .

According to a fourth aspect of the present invention, there is provided a motor stator winding tool, wherein the motor stator winding tool according to the second or third aspect is arranged such that a winding shaft is centered on a rotation shaft in conjunction with movement of the nozzle. A grip portion is provided on a peripheral portion of the cam plate, and a hook for releasing engagement with the electric wire gripped with the reciprocating rotation of the cam plate. It was formed.

According to a fifth aspect of the present invention, there is provided the motor stator winding tool according to the fourth aspect, wherein the motor stator winding tool according to the fourth aspect further comprises a cam plate attached to a peripheral portion of the cam plate in addition to the grip portion. A pressing portion for pressing the electric wire on the slot of the motor stator in the outer peripheral direction of the motor stator with the rotation of the motor stator is formed.

According to a sixth aspect of the present invention, there is provided the motor stator winding tool according to the second or third aspect, wherein the motor stator winding tool is moved in the radial direction of the motor stator in conjunction with the movement of the nozzle. The gripping portion is formed by a notch provided on the hooking bar to release the hook with the electric wire gripped by rotation.

A motor stator according to a seventh aspect of the present invention uses a winding tool interlocked with a circulating nozzle to grip an electric wire fed from the nozzle, and attaches the held electric wire to the motor stator. After the wire is transported to a predetermined position in the outer circumferential direction, the gripping of the electric wire is released, and a series of these operations is repeated so that the interval between adjacent coils in the slot after winding becomes (wire diameter + 0.7) mm. It is wound to a smaller number of turns.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A motor stator winding tool according to an embodiment of the present invention will be described below with reference to FIGS. In the figure, a stator 1 of a motor is configured such that a coil 5 is formed on each of the wound portions 3 by directly winding an electric wire W around a wound portion 3 of a slot 2. FIG.
FIG. 2 shows a portion of the wire W fed out of a feeder 21 and a winding tool 11 for winding the wire W. A shaft 22 of the feeder 21 is disposed at the center of the internal space of the stator 1.
A pair of nozzles 23 are provided in opposite directions. The nozzle 23 is formed to have a protruding length that moves in an outer portion of the slot 2, that is, a central space portion of the stator 1 or a portion inside the slot 2 and very close to the slot opening 4. The shaft 22 is configured such that an electric wire W fed from a bobbin (not shown) passes through the inside thereof and is drawn out from an opening 24 of a nozzle 23 toward the slot 2 of the stator 1.
Although two nozzles 23 are provided in FIG. 1, one nozzle or three or more nozzles may be provided, and the number is not limited.

The shaft 22 includes a motor (not shown),
The internal space of the stator 1 is moved up and down by well-known driving means such as a cylinder, and a swing operation of reciprocating a predetermined angle in the horizontal direction is performed. It moves left and right.

A feeder 21 is provided above and below the stator 1.
A total of four winding tools 1 spaced a predetermined distance apart from each other at a symmetrical position above and below the slot 2 of the stator 1
1 is provided.

The winding tool 11 is configured to rotate up and down by a predetermined angle when a rotating shaft 13 fixed to the center of the cam plate 12 is rotated by well-known driving means (not shown). . The cam plate 12 of the winding tool 11
A grip portion 15 on which the electric wire W is placed is formed by forming a hook 14 by cutting out in a chord direction on a side of the peripheral portion of the surface facing the nozzle 23. Here, if the hook 14 is shown with respect to the winding tool 11 in the upper right of FIG. 1, the cam plate 12 is rotated downward by a certain angle in accordance with the rotation of the rotation shaft 13 so that the opening of the gripping portion 15 is obliquely downward. The wire W is formed into a smooth curved surface such that the wire W is disengaged from the electric wire W placed on the grip portion 15 when the electric wire W is turned off.
The winding tool 11 uses a well-known link mechanism, a position detection sensor, and the like, and rotates in synchronization with and interlocking with the shaft 22 of the feeder 21. In addition, if a link mechanism is used, the winding tool 11 can be linked reliably and at low cost. Here, the driving means of the rotating shaft 13 corresponds to the transferring means, and the opening of the grip portion 15 corresponds to the releasing means.

Next, a description will be given of the winding by the winding tool of the motor stator of the present embodiment configured as described above. In winding the electric wire W, first, the electric wire W is inserted from a bobbin (not shown) into the shaft
Of the electric wire W is held at a predetermined position. Next, in this state, the shaft 22
Is swung up and down by a predetermined angle in the horizontal direction while moving up and down. At this time, the swing angle of the shaft 22 is set within a range in which the shaft can be wound around one wound portion 3. Is set. The nozzle 23 of the shaft 22 is
Movement of the outer part of slot 2 or slot 2
Vertically descends a portion very close to the slot opening 4 inside the slot, moves horizontally to the right or left, and then moves to the outside portion of the adjacent slot 2 or inside the slot 2
After ascending very close to, turn left or right,
It returns to its initial position by moving horizontally, and moves while drawing a rectangular frame-like trajectory by this closed loop circulation. The electric wire W is wound around the wound portion 3 by repeating this series of operations. Although the tip of the nozzle 23 may pass through the inside of the slot opening 4, it does not pass through the inside of the slot 2 further inside.

For a series of operations of the shaft 22,
The winding tool 11 operates as follows. When the nozzle 23 of the shaft 22 is located at the start point of the closed loop, for example, as shown in the upper right winding tool 11 shown in FIG. Hold in. Next, when the nozzle 23 descends vertically, the winding tool 11 rotates downward about the rotation shaft 13 accordingly. As a result, the gripping portion 15 of the winding tool 11 also rotates downward and moves in the outer circumferential direction of the stator 1, so that the wire W on the gripping portion 15 is moved toward the outside of the slot 2 while being gripped. . Then, when the winding tool 11 is further rotated by a predetermined angle and the electric wire W reaches a predetermined position, the electric wire W is disengaged from the winding tool 11 and naturally falls from the grip portion 15 onto the wound portion 3. The electric wire W is guided to the inner side of the slot 2, that is, to the outer peripheral direction. When the engagement with the electric wire W is released, the winding tool 11 returns to the original standby state.

Next, when the shaft 22 reaches the bottom dead center and the nozzle 23 changes its moving direction in the horizontal direction below the slot 2, the gripping portion 1 of the lower winding tool 11 on standby is turned on.
The electric wire W is hung on 5 and is gripped. Then, the nozzle 23
Starts rising at the slot opening 4 in the adjacent slot 2, the lower winding tool 11 starts rotating,
The nozzle 23 is rotated by a predetermined angle while being lifted, and the electric wire is moved outward and then disengaged from the electric wire W.
Reaches top dead center. After releasing the engagement, the lower winding tool 11 returns to the original standby state. Next, the nozzle 23 moves above the slot 2 in the horizontal direction opposite to the lower side, and returns to the original circulation start point.

As described above, the nozzle 23 makes one round of the closed loop, and each winding device 11 makes one reciprocating rotation, whereby the electric wire W is wound once around the wound portion 3 of the stator 1. Hereinafter, by repeating this operation, the electric wire W is wound around the wound part 3 many times, and the coil 5 is formed. Then, when winding on the wound portion 3 of the next stot 2, it turns horizontally to a position facing the nozzle 23 corresponding to that of the winding tool 11.

When the winding tool 11 is at a predetermined position and the cam plate 12 is only rotated in the vertical direction, the winding cannot be formed to a uniform thickness in the slot 2 but becomes locally thick and the winding thickness is increased. If there is a possibility that unevenness may occur, the winding tool 1
By gradually reciprocating or oscillating 1 in the radial direction, uniform winding in the slot 2 can be achieved.

Conversely, if the wire W can be wound uniformly from the slot opening 4 to the depth of the slot 2, the winding tool 1
1 may be provided only above or below the stator 1.

As described above, in this embodiment, the electric wire W
Is wound around the stator 1, the nozzle 23 only moves up and down around the slot opening 4, and moves the electric wire W from the slot opening away from the slot opening 4. Winding part 3 while approaching the back side of 2
The nozzle 23 can be wound evenly without passing through the nozzle 23 from the slot opening 4 in the slot 2 to the back side. Therefore, the dead zone 6 in which the winding cannot be performed in the slot 2 which has always occurred in order to allow the nozzle 23 to pass therethrough does not occur.

As a result, the dead zone 6 which has conventionally occurred
Since it is possible to perform winding, the winding cross-sectional area of the coil 5 can be increased, and the output can be increased. That is, a large output can be obtained with a small motor.

It should be noted that the above-mentioned dead zone 6
Is calculated as follows. That is, since the nozzle 23 is made of a metal material or a synthetic resin material, as shown in FIG. 5, the side wall thickness t of the opening 24 needs to be 0.35 mm or more in terms of strength. 0.7 mm or more is required. Accordingly, the total width of the nozzle 23, that is, the width of the dead zone 6 is at least (wire diameter of the electric wire W + thickness of both side walls of the opening of the nozzle), that is, (wire diameter of the electric wire W + 0.7) mm.

Here, it is possible to increase the winding cross-sectional area and the winding density by winding a large number of thin wires rather than a thick wire, so that several wires W are bundled together and the shaft However, there is a limit to the number of wires to be bundled, and there is a possibility that the wires W cross each other, hindering the wires or damaging the wires W. However, if the wire winding tool 11 of the present invention is used, the wire W is drawn out in the outer circumferential direction of the stator 1 during winding, and an intermediate output wire is output, and ends of the plurality of intermediate output wires are connected. Therefore, the same effects as those obtained by bundling a plurality of thin wires and winding a single thick wire can be obtained without hindering the wiring or damaging the electric wire W.

Next, a winding tool according to another embodiment of the present invention is shown in FIG.
And FIG. In the drawing, the winding tool 11 is the same as the winding tool 11 of the above-described embodiment, except that a hook-shaped pushing portion 16 is further formed at a position facing the hook 14 on the peripheral edge of the cam plate 12.

In the winding tool 11, since the pressing portion 16 is formed on the cam plate 12 in addition to the hook 14, the winding portion 3 is fed out of the nozzle 23 during winding, in particular.
The wires W placed on the upper surface and the lower surface can be bundled one by one or a plurality of them and pushed toward the outside of the stator 1, and the effect of uniformly winding the wire in the slot can be further enhanced.

Next, a winding device according to still another embodiment of the present invention will be described with reference to FIG. In the figure, a hooking rod 17 as a winding tool is reciprocally mounted in a cylindrical member 18 and moves in the radial direction of the stator 1 in conjunction with the operation of the nozzle 23, and also rotates around the center axis. It is designed to reciprocate at a predetermined angle. A gripping recess 19 for hooking the electric wire W is formed at the tip of the hook bar 17.

In the winding of the electric wire W using the winding tool 11 composed of the hanging rod 17, the operation of the nozzle 23 which repeats the circulating movement in a rectangular frame-like trajectory in the same manner as in the above-described embodiment is interlocked. Then, the hanging bar 17 moves forward to the stator 1 side, and holds the electric wire W in the holding concave portion 19;
By rotating around the central axis while retreating to the cylindrical member 18 side, the upward gripping concave portion 19 is directed laterally and further diagonally downward, and the gripped electric wire W falls downward. Therefore,
As in the case of the winding tool 11 including the cam plate of the above-described embodiment, the electric wire W can be wound while approaching the inner side of the slot 2, and the nozzle 23 has a uniform thickness without passing through the inside of the slot 2. Since the winding can be performed in a short time and the dead zone 6 where winding cannot be performed does not occur, the output of the motor can be increased.

In each of the above embodiments, the winding tool 11 formed of the cam plate 12 or the winding tool 11 formed of the hanging rod 17 is used.
Is used to connect the electric wire W to the slot 2 of the stator 1.
However, when the present invention is implemented, the present invention is not limited to this, and the electric wire W is moved toward the outer peripheral direction of the stator 1 in synchronization with and in synchronization with the operation of the nozzle 23. Various means for releasing the grip can be employed.

Also, in the embodiment shown in FIGS. 2 to 4, the winding tool 11 is disposed above and below the stator 1, but if the electric wire W can be wound uniformly, the winding tool 11 may be disposed above or above the stator 1. It may be provided only on one of the lower side.

Further, various means such as a cam, a cylinder, a rack and pinion, and a servomotor can be used for driving the winding tool 11.

To link with the nozzle 23, various means other than the link mechanism and the position detecting sensor can be used.

[0035]

As described above, according to the present invention, the wire drawn out from the nozzle is gripped by using the winding tool interlocked with the circulating nozzle, and the gripped wire is then moved to the motor. The wire is wound around the stator by repeating the series of operations of transferring the wire in the outer peripheral direction of the stator and releasing the wire to the predetermined position. Therefore, the nozzle can be wound around the coiled portion while moving up and down in the peripheral portion of the slot opening while moving the electric wire to the far side of the slot away from the slot opening, and the nozzle can be wound around the slot opening in the slot. Since the winding can be performed uniformly without passing through the nozzle from the back side, a dead zone in which the winding cannot be performed in the slot, which has conventionally always occurred due to the passage of the nozzle, does not occur. As a result, winding can be performed even in a dead zone which has conventionally occurred, and the winding cross-sectional area of the coil can be increased. Therefore, a large output can be obtained with a small motor.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a winding tool of a motor stator according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a winding tool of a motor stator according to another embodiment of the present invention.

FIG. 3 is a front view of the winding tool of FIG. 2;

FIG. 4 is a perspective view showing a winding tool of a motor stator according to still another embodiment of the present invention.

FIG. 5 is a front view showing an opening of a nozzle of the feeding machine used in the embodiment of the present invention.

FIG. 6 is a perspective view showing a nozzle of a conventional feeding machine.

FIG. 7 is a main part plan view showing a position where a nozzle of a conventional feeding machine passes through a slot of a motor stator.

FIG. 8 is a plan view of a main part showing a coil of a conventional motor stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator 2 Slot 5 Coil 11 Winding tool 12 Cam plate 13 Rotating shaft 14 Hook 15 Gripping part 16 Pushing part 17 Hanging bar 18 Cylindrical member 19 Gripping concave part 23 Nozzle W Electric wire

[Procedure amendment]

[Submission date] December 17, 1999 (1999.12.
17)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Winding tool for motor stator

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

The present invention relates are those concerns again and again the motor stator windings wound around the wire to the motor stator, in particular, a motor to increase the output of the motor to eliminate the dead zone of the winding the stator winding is again and again relates ones.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

Accordingly, the present invention provides a motor stator which eliminates a dead zone of a slot due to the passage of a nozzle of a feeder and increases a winding cross-sectional area of a coil, thereby obtaining a small and high-output motor . It is an object to provide a winding tool .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

According to a first aspect of the present invention, there is provided a motor stator winding tool which is disposed around a motor stator and is circulated.
Up and down around the rotation axis in conjunction with the nozzle that moves in the ring
The nozzle is formed of a reciprocating cam plate, and the nozzle
While grasping the electric wire fed from
The wire is transferred to a predetermined position as it moves,
It is provided with a holding portion for releasing.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

According to a second aspect of the present invention, there is provided a motor stator winding device comprising: a peripheral portion of the motor stator winding device according to the first aspect;
In addition to the gripping part, the motor stator
Push the electric wire on the slot toward the outer circumference of the motor stator
That is, a pressing portion is formed.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Deleted

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Deleted

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Deleted

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Deleted

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Deleted

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

The winding tool 11 is configured to rotate up and down by a predetermined angle when a rotating shaft 13 fixed to the center of the cam plate 12 is rotated by well-known driving means (not shown). . The cam plate 12 of the winding tool 11
A grip portion 15 on which the electric wire W is placed is formed by forming a hook 14 by cutting out in a chord direction on a side of the peripheral portion of the surface facing the nozzle 23. Here, if the hook 14 is shown with respect to the winding tool 11 in the upper right of FIG. 1, the cam plate 12 is rotated downward by a certain angle in accordance with the rotation of the rotation shaft 13 so that the opening of the gripping portion 15 is obliquely downward. The wire W is formed into a smooth curved surface such that the wire W is disengaged from the electric wire W placed on the grip portion 15 when the electric wire W is turned off.
The winding tool 11 uses a well-known link mechanism, a position detection sensor, and the like, and rotates in synchronization with and interlocking with the shaft 22 of the feeder 21. In addition, if a link mechanism is used, the winding tool 11 can be linked reliably and at low cost .

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Next, when the shaft 22 reaches the bottom dead center and the nozzle 23 changes its moving direction in the horizontal direction below the slot 2, the gripping portion 1 of the lower winding tool 11 on standby is turned on.
The electric wire W is hung on 5 and is gripped. Then, the nozzle 23
Starts rising at the slot opening 4 in the adjacent slot 2, the lower winding tool 11 starts rotating,
Remove the engagement of the wire W after asked hauling outward direction to conductive lines rotated by a predetermined angle in the elevation of the nozzle 23, the nozzle 23 reaches the top dead center. After releasing the engagement, the lower winding tool 11 returns to the original standby state. Next, nozzle 2
3 moves in the horizontal direction opposite to the lower side above the slot 2 and returns to the original circulation start point.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

[0035]

As described above, the winding tool of the motor fixing device according to the present invention is arranged such that the rotating shaft is centered on the rotating shaft in conjunction with the circulating nozzle.
Formed by a cam plate that reciprocates vertically
At the same time, grasping the electric wire fed from the nozzle
At the same time, the wire is transferred to a predetermined position with the reciprocating rotation.
And a grip portion for releasing the grip is provided.
You. Therefore, the nozzle can be wound around the coiled portion while moving up and down in the peripheral portion of the slot opening while moving the electric wire to the far side of the slot away from the slot opening, and the nozzle can be wound around the slot opening in the slot. Since the winding can be performed uniformly without passing through the nozzle from the back side, a dead zone in which the winding cannot be performed in the slot, which has conventionally always occurred due to the passage of the nozzle, does not occur. As a result, winding can be performed even in a dead zone which has conventionally occurred, and the winding cross-sectional area of the coil can be increased. Therefore, a large output can be obtained with a small motor.

Claims (7)

[Claims] 1. An electric wire fed from said nozzle is gripped by using a winding tool interlocked with a circulating nozzle,
Next, the gripped electric wire is transported in the outer peripheral direction of the motor stator, and when the electric wire is transported to a predetermined position, the gripping of the electric wire is released. Characteristic winding method of motor stator. 2. A winding tool for a motor stator, which is disposed around a motor stator and cooperates with a movement of a nozzle for feeding an electric wire, comprising: a gripping portion for gripping the electric wire fed from the nozzle; A transfer means for transferring a gripped portion of the electric wire to a predetermined position in the outer peripheral direction of the motor stator while holding the electric wire, and a release means for releasing the grip of the electric wire transferred to the predetermined position. A winding tool for a motor stator. 3. The winding tool for a motor stator according to claim 2, wherein the winding tool is disposed at least above and below the motor stator. 4. A cam plate that reciprocates vertically about a rotation axis in conjunction with movement of the nozzle, wherein the grip portion is provided on a peripheral edge of the cam plate, The winding tool for a motor stator according to claim 2 or 3, wherein the hook is formed by a hook for releasing engagement with the electric wire gripped by the reciprocating rotation of the motor stator. 5. In addition to the gripping portion, a pressing portion is formed at a peripheral portion of the cam plate to press an electric wire on a slot of the motor stator in an outer peripheral direction of the motor stator as the cam plate rotates. The winding tool for a motor stator according to claim 4, wherein the winding tool is used. 6. A gripping rod formed in a radial direction of a motor stator in conjunction with the movement of the nozzle, wherein the gripping portion is provided on the latching rod, and the electric wire gripped by rotation. The winding tool for a motor stator according to claim 2 or 3, wherein the winding tool is formed by a notch for releasing engagement of the motor stator. 7. An electric wire drawn out from said nozzle is gripped by using a winding tool interlocked with a circulating nozzle,
After transferring the gripped electric wire to a predetermined position in the outer peripheral direction of the motor stator, the gripping of the electric wire is released. By repeating a series of these operations, the interval between adjacent coils in the slot after winding is performed. Is (wire diameter +0.7)
A motor stator having a number of turns smaller than 1 mm.