JP2001054266A - Coil-winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil-winding machine for surely performing normal winding of coil winding, without reducing the number of turns of the coil winding. SOLUTION: A nozzle 85 is fixed in a posture for orthogonally crossing a nozzle holder 83. The other end of the nozzle holder 83 is fixed to the pressure cone apex of a parallel crank mechanism 21. A reciprocating linear movement mechanism for performing reciprocating linear movement of the parallel crank mechanism 21 is provided. The parallel crank mechanism 21 rotates the nozzle 83 about a salient pole part in a state, where the center line of the salient pole part of the stator core becomes nearly parallel to that of the nozzle 83. The reciprocating linear movement mechanism cause it to reciprocate and to linearly move the parallel crank mechanism 21 along the center line of the salient pole part, thus aligning and winding the coil winding around the surrounding of the salient pole part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a winding around a salient pole portion by rotating a nozzle around a salient pole portion provided on the inner peripheral side of an annular yoke portion of a stator core for a rotating electric machine. It relates to a winding machine.

[0002]

2. Description of the Related Art Japanese Patent Application No. 59-114014 discloses an example of a winding machine which winds a winding around a salient pole by causing a nozzle to perform a box motion around the salient pole. In this conventional winding machine, a complicated mechanism and a driving device are used to cause the nozzle to perform a box motion.

The winding machine disclosed in Japanese Patent Application Laid-Open No. 51-143303 has a structure in which a rotary drive source for rotating a nozzle is disposed inside a stator core, and the nozzle is directly rotated by the rotary drive source. ing.

[0004]

In the former winding machine, winding can be performed even if the diameter of the stator core is small. However, the combination of swinging motion and linear motion causes the nozzle to perform box motion to perform winding. Since the wire is wound around the salient pole, it is difficult to wind the winding around the root of the salient pole. Further, when shifting from the swinging motion to the linear motion, tension cannot be applied to the winding, so that the winding flows out to the base side of the salient pole portion, and there is a problem that it is difficult to form an aligned winding.

On the other hand, in the latter winding machine, the winding can be wound up to the root of the salient pole portion, and furthermore, it is possible to perform aligned winding. However, since the drive source for rotating the nozzle needs to be located inside the yoke of the stator core, the diameter of the inscribed circle of the plurality of salient poles provided on the inner periphery of the stator core must be a fixed value. You have to do more. Therefore, when the outer diameter of the stator core is determined, it is necessary to secure the above-mentioned inscribed circle even if the projecting dimension of the salient pole portion is shortened and the number of windings is reduced.

It is an object of the present invention to provide a winding machine capable of securely winding windings without reducing the number of windings of the windings.

Another object of the present invention is to provide a winding machine capable of winding necessary and sufficient windings on salient pole portions of a small-sized stator core.

Another object of the present invention is to provide a winding machine capable of rotating a nozzle with a simple structure.

[0009]

According to the present invention, there is provided an annular yoke and a plurality of annular yoke portions which are arranged at predetermined intervals in the circumferential direction on the inner peripheral side of the annular yoke portion and which project radially inward. A winding machine for concentratingly winding a winding conductor around each of a plurality of salient pole portions of a stator core for a rotating electrical machine having salient pole portions.

In the winding machine of the present invention, the salient pole portion is in a parallel state (in principle, the center line extending in the radial direction of the salient pole portion is substantially parallel to the center line extending in the longitudinal direction of the nozzle). The nozzle is placed on the salient pole part so that the winding conductor is drawn out from the tip, and the nozzle is held at one end located inside the annular yoke part A nozzle holder extending in a direction perpendicular to the nozzles (in the direction of lamination of the steel plates forming the stator core or in the direction of the axis of the rotating shaft on which the rotor disposed inside the stator core is fixed); and a nozzle holder for moving the nozzle holder. And a driving device.

The nozzle holder driving device used in the present invention comprises:
The other end of the nozzle holder is held at an action point or an operating point (a point at which the output of the driving device is taken out), and the center line extending in the radial direction of the salient pole portion and the center line of the nozzle are substantially parallel to each other. The nozzle holder is configured to move so that the nozzle reciprocates linearly along the center line of the salient pole portion while continuously rotating around the salient pole portion. The nozzle holder driving device is configured such that only one end of the nozzle holder and the nozzle held at the one end move inside the annular yoke. When the nozzle rotates and reciprocates linearly, the nozzle and one end of the nozzle holder holding the nozzle may naturally come out of the annular yoke.

In the present invention, since the nozzle continuously rotates in parallel with the salient pole portion, the winding can be wound up to the root of the salient pole portion. In addition, the nozzle moves continuously in a rotary motion (specifically, a circular rotary motion in which the trajectory of the nozzle is circular when viewed from one side in the direction in which the center line of the salient pole portion extends or an elliptical rotary motion in which the trajectory is elliptical) Therefore, tension can always be applied to the winding drawn from the nozzle, and the winding aligned and wound around the salient pole portion does not easily collapse. Therefore, according to the winding machine of the present invention,
The winding ratio can be increased, and the windings can be reliably aligned and wound.

Further, in the winding machine of the present invention, since only one end of the nozzle and the nozzle holder moves inside the yoke portion of the stator core, a plurality of protrusions are provided as compared with the conventional winding machine. Even when the inscribed circle in contact with the magnetic pole surface of the pole portion is reduced, it is not necessary to reduce the protrusion size of the salient pole portion more than necessary, and the number of turns of the winding can be sufficiently secured.

Various mechanisms for causing the nozzle to perform the above-described circular rotational movement and reciprocating linear movement can be considered. For example, from a fixed crank, two rotating cranks of equal length that rotate about two rotation centers located at both ends of the fixed crank, and a connecting crank that is equal in length to the fixed crank and connects the two rotating cranks. When the nozzle holder driving device is configured by a parallel crank mechanism, a rotary drive source for rotating at least one of the two rotary cranks, and a reciprocating linear motion mechanism for reciprocating the fixed crank of the parallel crank mechanism, the nozzle can be simplified. With such a configuration, it is possible to surely perform the circular rotational movement. In the case of employing such a structure, the action point to which the other end of the nozzle holder is fixed is located on the connecting crank. The position of the action point may be inside or outside the connection point between the two rotary cranks and the connection crank.

When the nozzle holder driving device is configured so that the trajectory of the rotational movement of the nozzle is elliptical, the major axis of the ellipse is arranged along the thickness direction of the yoke portion (the axial direction of the rotor). Is preferred. In this case, since the minor axis of the elliptical orbit is oriented in the circumferential direction of the stator core, even if the dimension between the pole pieces of the adjacent salient pole portions to some extent (the width dimension of the opening of the slot) becomes smaller, The winding can be wound.

A nozzle holder driving device capable of causing such a nozzle to make an elliptical rotation can be constituted by a parallel crank mechanism, a slider crank mechanism, and a reciprocating linear movement mechanism. The parallel crank mechanism used here includes a fixed crank, first and second rotating cranks having the same length rotating about first and second rotation centers located at both ends of the fixed crank, and a fixed crank. And a connecting crank having the same length and connecting the first and second rotating cranks. The slider crank mechanism includes a slider slidably provided with respect to the connecting crank so as not to hinder the movement of the connecting crank.
And a connecting rod connecting the third rotating crank and one end of the slider to each other in a pair. Then, the reciprocating linear motion mechanism keeps the positional relationship between the fixed crank of the parallel crank mechanism and the third rotation center of the slider crank mechanism constant and causes the two to reciprocate linearly together. In such a mechanism, when a rotary drive source for synchronously rotating at least one of the first and second rotary cranks and the third rotary crank is provided, since the components are completely synchronized, it is possible to obtain a low-vibration drive device. Can be. In such a driving device, the action point at which the nozzle holder is held is located on the other end of the slider.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a winding machine according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a winding machine 1 according to an embodiment of the present invention in which a nozzle performs a circular rotating motion, FIG. 2 is a plan view of the winding machine 1, and FIG. 4 is a right side view of the winding machine 1, and FIG. 5 is a schematic sectional view of the winding machine. In these figures, 3 is the base,
A reciprocating linear motion mechanism housing case 7 in which a reciprocating linear motion mechanism 5 (see FIG. 5) is stored is fixed on the base 3. As shown in FIG. 5, a reciprocating linear motion mechanism 5 includes a driving motor 9 and a rotating shaft 11 fixed to an output shaft of the driving motor 9 via a coupler 10 and rotating in forward and reverse directions.
And a screw member 15 screwed to a screw portion 13 formed on the rotating shaft 11, and the movable base 1 to which the screw member 15 is fixed.
7, and a rail member 19 on which the movable base 17 is movably mounted and fixed to the case 7. Motor 9
When the rotary shaft 11 is rotated forward and the rotation shaft 11 is rotated forward, the screw member 15 moves left (retreats) in the state of FIG. 5, and the movable base 17 moves left (retreats). When the driving motor 9 rotates in the reverse direction and the rotating shaft 11 rotates in the reverse direction, the screw member 15 moves rightward (forward) in the state of FIG. 5, and the movable base 17 moves rightward (forward).

A parallel crank mechanism 2 is mounted on the moving table 17.
A rotation drive device 23 serving as one rotation drive source is fixed. Reference numeral 25 shown in FIG. 1 is a storage case fixed on the moving table 17, and a mechanism is housed inside the storage case 25 as shown in FIG. The storage case 25 includes a bottom wall 25a, a lid 25b, and four side walls 25c, 25.
d... Side walls 25 arranged in the front-rear direction
Both ends of a bearing holder 31 holding a plurality of bearings 29 that rotatably support the lower hollow shaft 27 are fixed below c and 25d. A lower crankshaft 33 is fitted inside the lower hollow shaft 27. The lower hollow shaft 27 and the lower crankshaft 33 rotate together. Both ends of a bearing holder 39 holding a plurality of bearings 37 that rotatably support the upper hollow shaft 35 are fixed above the side walls 25c and 25d arranged in the front-rear direction. An upper crankshaft 41 is fitted inside the upper hollow shaft 35. The upper hollow shaft 35 and the upper crankshaft 41 rotate together.

At the front end of the lower hollow shaft 27, two timing pulleys 43 and 45 are fitted and fixed. A mounting nut 47 is screwed into a front end of the lower crankshaft 33. A timing pulley 49 and a flanged ring 51 are fitted and fixed to the front end of the upper hollow shaft 35. A mounting nut 53 is screwed into a front end of the upper crankshaft 41.

Two tension pulley shafts 55, 56 (FIG. 4) are fixed to the center of the side wall portion 25d, and tension pulleys 57, 58 are rotatably mounted on the tension pulley shafts 55, 56. Installed. As shown in FIG. 4, the tension pulley shafts 55 and 56 are mounted so that the position can be adjusted in the lateral direction.
9 by loosening the tension pulley shafts 55 and 56. As seen in FIGS. 2-4,
A drive motor 61 serving as a rotation drive source of the two crankshafts 33 and 41 is provided on an extension of the bottom wall 25 a of the case 25.
Has been fixed. A pulley 63 is fixed to a rotating shaft projecting from a front end of the driving motor 61.

As can be seen from FIG. 4, the pulley 63 rotated by the drive motor 61 and the lower hollow shaft 2
A first timing belt 65 is hung between the pulley 45 and the pulley 45 fixed to the pulley 45. A second timing belt 67 is hung on a pulley 43 fixed to the lower hollow shaft 27 and a pulley 49 fixed to the upper hollow shaft 41. As a result, when the drive motor 61 rotates, the lower hollow shaft 27 rotates, and in synchronization with this, the upper hollow shaft 35 rotates.
Also rotate.

As shown in FIG. 5, the lower crankshaft 3
Disks 69 and 71 are fixed to the rear end portions of the upper crankshaft 41 and the upper crankshaft 41, respectively. Mounting plates 70 and 72 for fixing the two rotating shafts 73 and 75 are fixed to these disks 69 and 71. The two rotation axes 73 and 75 are respectively associated with the respective axes AL3 and AL
4 are eccentrically fixed to the disks 69 and 71 so as to be radially shifted by a distance R from the corresponding axis AL1 of the lower crankshaft 33 and the axis AL2 of the upper crankshaft 41. The rotating shafts 73 and 75 eccentrically fixed to the disks 69 and 71 by the same size are provided with bearings 77 and 7.
9 are connected to each other by a connecting plate 81.

In such a structure, a portion located between the center of the lower crankshaft 33 of the disk 69 and the center of the rotating shaft 73 constitutes the first rotating crank of the parallel crank mechanism 21. The portion of the disk 71 located between the axis center of the upper crankshaft 41 and the axis center of the rotating shaft 75 constitutes a second rotating crank of the parallel crank mechanism 21. The portion between the axis AL1 of the lower crankshaft 33 and the axis AL2 of the upper crankshaft 41 forms a fixed crank of the parallel crank mechanism 21. And the connecting plate 81
Constitute the connecting crank of the parallel crank mechanism 21. As a result, the fixed crank, the two rotating cranks having the same length rotating about two rotation centers located at both ends of the fixed crank, and the connection connecting the two rotating cranks having the same length as the fixed crank and connecting the two rotating cranks A parallel crank mechanism 21 including a crank is configured.

The other end of a nozzle holder 83 holding a hollow nozzle 85 at one end is fixed or held at the upper end of a connecting plate 81 constituting a connecting crank. A hollow wire guide cylinder 87 is fixed to the nozzle holder 83 at a position below the nozzle 85. The nozzle 85 and the winding guide cylinder 87 are both fixed to the nozzle holder 83 in a posture extending in a direction orthogonal to the main body of the nozzle holder 83. That is, the nozzle holder 83 is arranged such that the hollow space inside the nozzle 85 and the winding guide cylinder 87 extends in the horizontal direction.
The winding guide cylinder 87 is fixed to the nozzle holder 83. As shown in FIGS. 1 and 5, the winding W is sent out from a winding supply device (not shown),
It is supplied to the nozzle 85 via the guide 89 fixed to 5b and the winding guide cylinder 87.

In this structure, the mounting position of the connecting plate 81 to which the nozzle holder 83 is mounted becomes the operating point of the parallel crank mechanism 21. This action point draws a locus of a circle having a radius R when the parallel crank mechanism 21 performs the parallel crank movement. Accordingly, the nozzle holder 85 fixed to the connecting plate 81 also makes a circular rotational movement so as to draw a locus of a circle having a radius R as shown in FIG. FIG. 3 shows a state in which the nozzle 85 is located at the vertex of the locus of the circle.

In the winding machine 1, a nozzle holder driving device is constituted by the reciprocating linear motion mechanism 5, the parallel crank mechanism 21, and the rotation driving device 23 serving as the rotation driving source.

When a winding is wound around a salient pole portion of a stator core of a rotary electric machine using the winding machine 1, the following is performed. FIG. 6 shows a positional relationship between the nozzle 85 and the stator core 91. The stator core 91 has an annular yoke 93
And a plurality of salient pole portions 9 arranged on the inner peripheral side of the annular yoke portion 93 at a predetermined interval in the circumferential direction and protruding radially inward.
5 ... In FIG. 6, some salient pole portions 95 are shown.
Is only shown. The nozzle 85 is provided with a salient pole 95
(The center line C1 extending in the radial direction of the salient pole portion 95 is substantially parallel to the center line C2 of the nozzle 85. Inside the annular yoke portion 93, the nozzle holder 83 Only one end and the nozzle 85 move.The nozzle holder 83 is fixed to a direction perpendicular to the direction in which the nozzle 85 extends (the lamination direction of the steel plates constituting the stator core 91 or the rotor arranged inside the stator core 91 is fixed). (In the direction of the axis of rotation).
The nozzle holder 83 extends in a direction orthogonal to the paper surface and going from the front surface side to the rear surface side of the paper surface.

With this arrangement, only one end of the nozzle holder 83 and the nozzle 85 move inside the annular yoke 93. Then, the nozzle holder driving device moves the nozzle holder 83 so that the nozzle 85 reciprocates linearly along the center line C1 of the salient pole portion 95 while continuously rotating circularly around the salient pole portion 95. That is, when the reciprocating linear motion mechanism 5 is operated to reciprocate the moving table 17 at a predetermined cycle by a distance corresponding to the length of the winding portion of the salient pole portion 95, the nozzle 85 also reciprocates back and forth. At the same time, when the drive motor 61 is rotated, the nozzle holder 8
3 performs the aforementioned circular motion. Radius R of this circular rotation
Is determined according to the length of the pole piece of the salient pole portion 95. That is, the radius R is determined so that the nozzle 85 can enter and exit the slot formed between the two salient pole portions 95. The limit of the thickness dimension of the salient pole portion 95 in the lamination direction of the steel sheet is determined by the radius R. By repeating the rotational movement and the reciprocating linear movement, the winding can be concentratedly wound around the winding winding portion of the salient pole portion 95 by the aligned winding as a whole. When the winding operation for one salient pole portion is completed, the process proceeds to the winding operation for the next salient pole portion. In this case, the stator core 91 is rotated with respect to the nozzle 85 of the winding machine 1. A known mechanism or device for rotating the stator core 91 can be used, and thus description thereof is omitted.

Next, a second embodiment of the winding machine according to the present invention will be described with reference to FIGS. This embodiment is different from the first embodiment in that the locus of rotation of the nozzle becomes elliptical. FIG. 7 is a sectional view of a main part of a winding machine 101 according to the second embodiment. 7, a winding machine 1 according to the first embodiment shown in FIGS.
1 to 6 are given the same reference numerals as those in FIGS. 1 to 6 and the description thereof is omitted.
The winding machine 101 is configured such that a locus of the rotational movement of the nozzle 185 such that the major axis of the ellipse is along the thickness direction of the yoke portion (the axial direction of the rotor) is obtained. In this case, the short axis of the elliptical orbit is oriented in the circumferential direction of the stator core, so that even if the thickness of the stator core is increased to some extent, the winding can be wound. Further, even when the dimension between the pole pieces of the adjacent salient pole portions (the width dimension of the opening of the slot) is reduced, the winding can be wound around the salient pole portions.

In order to cause the nozzle 185 to make an elliptical rotational motion and a linear reciprocating motion, in this embodiment, the nozzle holder driving device comprises a parallel crank mechanism 121, a slider crank mechanism 201, and a reciprocating linear motion mechanism. The configuration of the parallel crank mechanism 121 used here is substantially the same as that of the parallel crank mechanism 21 of the first embodiment. In this example, oval arms 169 and 171 are used instead of the disks 69 and 71 (see FIG. 9).
Therefore, a portion located between the axis center of the lower crankshaft 133 of the arm 169 and the axis center of the rotary shaft 173 constitutes the first rotary crank of the parallel crank mechanism 121, and the upper crankshaft of the arm 171. The portion located between the axis center of 141 and the axis center of the rotating shaft 175 constitutes the second rotating crank of the parallel crank mechanism 121.
The portion between the axis AL1 of the lower crankshaft 133 and the axis AL2 of the upper crankshaft 141 forms a fixed crank of the parallel crank mechanism 121. And connecting plate 1
Reference numeral 81 denotes a connecting crank of the parallel crank mechanism 121. As a result, the fixed crank, the two rotating cranks having the same length rotating about the two rotation centers located at both ends of the fixed crank, and the connection connecting the two rotating cranks having the same length as the fixed crank and connecting the two rotating cranks A parallel crank mechanism 121 including a crank is configured.
As will be described later, in the winding machine 101, the nozzle holder 183 is not fixed to the connecting plate 181. As shown in FIG. 9, the connecting plate 181 is
5 is rotatably supported, and the central body 181a is integrally provided on both sides of the central body 181a.
Overhangs 181b and 18 extending in a direction orthogonal to
1c. The two overhangs 181b and 181c have two rods 203,
205 is provided with bushes 181d and 181e in which two through holes are formed to be slidably fitted.

At both ends of the two rods 203 and 205,
Connection blocks 207 and 209 for connecting the two rods are fixed so that the two rods 203 and 205 are arranged in parallel. A slider 210 is constituted by the two rods 203 and 205 and the two connection blocks 207 and 209. A nozzle holder 183 is fixed to the center of the connection block 207. A through hole 209 a is formed in the center of the connection block 209, and a fixed shaft 211 is fixed to the through hole 209 a using a nut 213 and a washer 215.

As shown in FIG. 7, the parallel crank mechanism 12
Storage case 125 in which a mechanism for driving the storage unit 1 is stored.
Below the bottom wall portion 125a, a pair of support frames 21 is provided.
7 and 219 are arranged. Both ends of a bearing holder 225 holding a plurality of bearings 223 that rotatably support the hollow shaft 221 are fixed to the pair of support frames 217 and 219. A crankshaft 227 (third crankshaft) is fitted inside the hollow shaft 221. The hollow shaft 221 and the crankshaft 227 rotate together. Two timing pulleys 229 and 231 are fitted and fixed to the front end of the hollow shaft 221. A mounting nut 233 is screwed into the front end of the crankshaft 227. Note that the crankshaft 2
27, the lower crankshaft 133 (first crankshaft) and the center of the upper crankshaft 141 (second crankshaft) are arranged vertically so that the centers thereof are aligned.

Two tension pulley shafts 235 (one not shown) similar to the tension pulley shafts 55 and 56 of the first embodiment are fixed to the center of the support frame 219. A tension pulley 237 is rotatably fitted to each of the two tension pulley shafts 235. The tension pulley shaft 235 is mounted so that the position can be adjusted.
9 by loosening the tension pulley shaft 235. Although not shown in FIG.
A drive motor serving as a rotation drive source for the crankshaft 227 is fixed on the top 17. A pulley is fixed to a rotating shaft projecting from a front end of the driving motor. A first timing belt 241 is provided between the pulley and the pulley 231 fixed to the hollow shaft 221. It is hung. Further, a second timing belt 243 is hung between a pulley 229 fixed to the hollow shaft 221 and a pulley 145 fixed to the lower hollow shaft 127. A pulley 143 fixed to the lower hollow shaft 127
A third timing belt 167 is hung between the pulley 149 and the pulley 149 fixed to the upper hollow shaft 135.
As a result, when a driving motor (not shown) fixed on the moving table 17 rotates, the hollow shaft 221 and the lower hollow shaft 127 are rotated.
Then, the upper hollow shaft 135 rotates synchronously.

As shown in FIG. 7, a disk 245 is fixed to the rear end of the crankshaft 227. An oval mounting plate 249 for fixing the rotating shaft 247 is fixed to the disk 245. Rotating shaft 247
Is the axis AL of the crankshaft 227 to which the axis AL6 corresponds.
5 is fixed to the disk 245 via the mounting plate 49 in a state of being eccentric so as to be shifted in the radial direction by a distance R0 from 5. The axis center of the crankshaft 227 constitutes the third center of rotation, and the portion of the mounting plate 249 located between the axis center of the crankshaft 227 and the axis center of the rotation shaft 247 centers on the third center of rotation. To form a third rotating crank that rotates. Then, the connecting block 20 of the slider 210 and the rotating shaft 247 rotating about the third rotation center (AL5).
The fixed shaft 211 fixed to 9 is connected to the connecting rod 251 by a turning pair.

The slider crank mechanism 201 is slidably provided on the connecting plate 181 so that the slider 210 does not hinder the movement of the connecting plate 181. The reciprocating linear motion mechanism has the same structure as that of the first embodiment. The reciprocating linear motion mechanism has a fixed crank (the axis AL1 of the lower crankshaft 133 and the upper crankshaft) of the parallel crank mechanism 121 disposed on the moving table 117. The positional relationship between the shaft 141 (the portion between the axis AL2 of the shaft 141) and the third rotation center of the slider crank mechanism 201 (the axis AL5) is maintained constant (that is, the positional relationship is not changed). Reciprocate linear motion together.

In the area on the left side of the sectional view shown in FIG. 7, the rotation trajectory TR1 of the rotation shaft 247, the rotation trajectory TR2 of the rotation shaft 173, the rotation trajectory TR3 of the rotation shaft 175, and the rotation trajectory TR4 of the nozzle 185 are shown. Is shown. The sliding operation of the slider 210 by the slide crank mechanism 201 and the parallel rotational movement of the connecting plate 181 by the parallel crank mechanism 121 are combined, so that the nozzle 185
Performs an elliptical motion such that the major axis is positioned in the direction in which the object slides.

In this driving device, the action point at which the nozzle holder 183 is held is the center point of the connecting block 207 forming a part of the slider 210.

[0038]

According to the present invention, since the movement of the nozzle is a continuous rotational movement, tension can always be applied to the winding drawn from the nozzle, and the winding wound in a line with the salient pole portion This is advantageous in that the winding can be easily collapsed, the linearity factor can be increased, and the windings can be reliably aligned and wound. Further, in the winding machine of the present invention, since only one end of the nozzle and the nozzle holder moves inside the yoke portion of the stator core, compared with the conventional winding machine, a plurality of salient pole portions are formed. Even when the inscribed circle becomes smaller, it is not necessary to reduce the protrusion dimension of the salient pole portion more than necessary, and there is an advantage that the number of turns of the winding can be sufficiently secured.

[Brief description of the drawings]

FIG. 1 is a front view of an example of an embodiment of a winding machine of the present invention.

FIG. 2 is a plan view of the winding machine of FIG. 1;

FIG. 3 is a left side view of the winding machine of FIG. 1;

FIG. 4 is a right side view of the winding machine of FIG. 1;

FIG. 5 is a schematic sectional view of the winding machine of FIG. 1;

FIG. 6 is a diagram used to explain a positional relationship between a nozzle and a stator core.

FIG. 7 is a sectional view of a main part according to a second embodiment of the present invention.

8 is a front view of a parallel crank mechanism and a slide crank mechanism used in the example of FIG.

9 is an exploded perspective view of FIG.

DESCRIPTION OF SYMBOLS 1 Winding machine 3 Base 5 Reciprocating linear motion mechanism 7 Reciprocating linear motion mechanism storage case 9 Driving motor 11 Rotary shaft 17, 117 Moving table 21, 121 Parallel crank mechanism 23 Rotation driving device 25, 125 Storage case 27,127 Lower hollow shaft 33,133 Lower crankshaft 35,135 Upper hollow shaft 41,141 Upper crankshaft 61 Driving motor 73,75,173,175 Rotating shaft 81,181 Connecting plate 83,183 Nozzle holder 85 , 185 Nozzle 91 Stator core 93 Yoke 95 Salient pole 201 Slide crank mechanism 210 Slider 221 Hollow shaft 227 Crank shaft 247 Rotation shaft 249 Mounting plate 251 Connecting rod

Claims (6)

[Claims] 1. An annular yoke portion, and a plurality of salient pole portions disposed on the inner peripheral side of the annular yoke portion at predetermined circumferential intervals and projecting radially inward. A winding machine for concentratedly winding a winding conductor on each of the plurality of salient pole portions of a stator core for a rotating electric machine, wherein the winding conductor is placed in parallel with the salient pole portions and the tip ends of the winding conductors are arranged in parallel. A nozzle to be drawn out, a nozzle holder holding the nozzle at one end disposed inside the annular yoke portion and extending in a direction orthogonal to the nozzle, and an other end of the nozzle holder at an operation point. Holding the portion, while the center line of the salient pole portion extending in the radial direction and the center line of the nozzle are substantially parallel to each other, the nozzle continuously rotates around the salient pole portion while rotating. So that it reciprocates linearly along the center line of the salient pole A nozzle holder driving device for moving the nozzle holder, wherein the nozzle holder driving device is configured such that only the one end and the nozzle of the nozzle holder move inside the annular yoke. Winding machine. 2. The winding machine according to claim 1, wherein the nozzle holder driving device is configured such that a locus of the rotational movement of the nozzle is circular. 3. The nozzle holder driving device according to claim 1, wherein the fixed crank, two rotating cranks having the same length rotating about two rotation centers located at both ends of the fixed crank, and having the same length as the fixed crank. A parallel crank mechanism comprising a connecting crank connecting the two rotary cranks; a rotary drive source for rotating at least one of the two rotary cranks; and a reciprocating linear motion for reciprocating the fixed crank of the parallel crank mechanism. The winding machine according to claim 1, further comprising a mechanism, wherein the action point is on the connection crank. 4. The winding machine according to claim 3, wherein the two rotary cranks are driven synchronously by one rotary drive source. 5. The nozzle holder driving device according to claim 1, wherein the locus of the rotational movement of the nozzle is elliptical, and a major axis of the ellipse is along a thickness direction of the yoke. The winding machine described. 6. The nozzle holder driving device further comprises: a fixed crank, a first crank located at both ends of the fixed crank.
And first and second rotating cranks having the same length rotating about the second rotation center, and a connecting crank connecting the first and second rotating cranks with the same length as the fixed crank. A parallel crank mechanism, a slider slidably provided with respect to the connection crank so as not to hinder the movement of the connection crank, a third rotation crank that rotates about a third rotation center, and the third rotation crank. A slider crank mechanism comprising a connecting rod for connecting the rotating crank and one end of the slider in a rotating pair, respectively; and a positional relationship between the fixed crank of the parallel crank mechanism and the third rotation center of the slider crank mechanism is fixed. A reciprocating linear motion mechanism that moves the reciprocating linear motion together while maintaining the first and second rotary cranks On the other hand the winding machine according to claim 1 or 5 and a rotation drive source for rotating synchronously with the third rotating crank, characterized in that the action point is on the other end of the slider.