JP4722509B2 - Winding device to stator core - Google Patents

Description

  The present invention relates to a winding device for forming a coil by directly winding a conductive wire around an inner tooth of a stator core.

  A winding device that forms a coil by winding directly on the inner teeth of a stator core is generally arranged coaxially at the center of the stator core, swings at a predetermined angle, and reciprocally moves in the axial direction; And a nozzle that is attached to the tip of the conducting wire guide tube and feeds the conducting wire in a direction substantially orthogonal to the conducting wire guide tube. The movement of the conductive wire guide tube causes the tip of the nozzle to circulate around the inner teeth of the stator core to be wound, and the conductive wire fed from the nozzle is directly wound around the internal teeth to form a coil (described below). Patent Document 1).

  Further, in order to align the conductive wires with the inner teeth of the stator core and wind them around a plurality of layers, the nozzles are revolved around the inner teeth of the stator core and the nozzles are reciprocated in the radial direction. As a result, the space factor of the conductors occupying the stator core slot can be increased, and the performance of the motor using the stator core can be improved (see Patent Document 2 below).

On the other hand, the conductive wire wound around the stator core is formed with an insulating coating on the outer periphery thereof so that an electrical short circuit does not occur between the conductive wires or at the contact portion between the conductive wire and the stator core. However, in the process of guiding the conducting wire to the nozzle through the conducting wire guide tube, if the insulating coating of the conducting wire is damaged, the short circuit may occur, resulting in a product defect. For this reason, it is known that the opening on the proximal end side of the nozzle is tapered so that the conductive wire is smoothly inserted without being damaged (see Patent Document 3 below).
Japanese Patent No. 2813556 JP 2000-245121 A JP 2002-325409 A

  In recent years, thicker wires have been used, for example, as power steering mounted on automobiles and motors for electric vehicles, and such thick conductors have been tried to be wound around the inner teeth of a stator core with a winding device as described above. Then, since the lead wire is not flexible, the lead wire and the nozzle base end portion are strongly contacted at the tip portion of the lead wire guide tube at a portion where the lead wire is changed in a substantially perpendicular direction and inserted into the nozzle base end portion. Insulating coatings of this product may be damaged.

  Therefore, an object of the present invention is to insert even a thick conducting wire applied to, for example, a motor for an automobile into a base end portion of a nozzle through a conducting wire guide tube, and effectively damage the conducting wire. An object of the present invention is to provide a winding device which can be prevented.

In order to achieve the above object, a winding device for a stator core according to the present invention is coaxially disposed at the center of the stator core, swings at a predetermined angle, and reciprocates in the axial direction, and the conductive wire. A nozzle head mounted at the tip of the guide tube, and extends through the nozzle head in a direction substantially orthogonal to the conductor guide tube, and can appear and disappear radially outward with respect to the conductor guide tube. And a winding device for a stator core provided with a nozzle that feeds a conductive wire in a direction substantially orthogonal to the conductive wire guide tube, and the nozzle head has an insertion hole for the conductive wire guide tube interposed therebetween. , on the opposite side with respect to the radial direction to the nozzle, via a support shaft which intersects at right angles to the wire guide tube and the nozzle, the reel is mounted, through the through hole Introduced wires Te is, after being wound around the outer peripheral located distally of the wire guide tube of the reel, the drawn out from the outer periphery located proximally of the wire guide tube, the proximal end portion of the nozzle It is comprised so that it may be inserted in.

  According to the present invention, after the conducting wire introduced through the insertion hole of the conducting wire guide tube is circulated by the reel disposed at a position facing the proximal end portion of the nozzle with respect to the insertion hole, the conductive wire is introduced into the proximal end portion of the nozzle. Because it is inserted, it is a part where the lead wire is inserted into the nozzle by changing the course in the direction perpendicular to the lead guide tube, and it is not bent with a small curvature. For example, it is a thick lead wire applied to motors for automobiles etc. Even if it exists, it can be made to introduce into a nozzle smoothly and it can prevent that the insulating film of conducting wire is damaged.

Further, the reel is because it is rotatably supported via a support shaft which intersects at right angles to the wire guide tube and the nozzle, the conductors were around the reel, is pulled out in the tangential direction of the reel nozzle The lead can be introduced into the base portion, and an excessive stress is not applied to the reel, so that the conductor can be guided smoothly.

In addition, the conductive wire is wound around the outer periphery of the reel that is positioned in the distal direction of the conductive wire guide tube, and is then drawn out from the outer periphery that is positioned in the proximal direction of the conductive wire guide tube, and then is connected to the proximal end portion of the nozzle. which is configured to be inserted, wire is wound on a reel directly from the insertion hole of the wire guide tube, can insert the proximal end portion of the nozzle after passing around the reel, the nozzle bend without force the wire In addition to being able to guide the conducting wire smoothly, damage to the insulating coating can be prevented more reliably.

  The nozzles are mounted on the nozzle head in a radial manner with respect to the lead guide tube, and the reels are mounted corresponding to the nozzles. It is preferable that the positions of the lead wires are shifted in the axial direction of the lead wire guide tube and are set so that the lead wires inserted around the reels and inserted into the base end portion of the nozzle do not contact each other. According to this, it is possible to simultaneously wind the plurality of internal teeth of the stator core, and it is possible to prevent the insulating coating from being damaged due to contact between the conductive wires.

  Furthermore, it is preferable that an insertion port that is widened toward the opening in the cross-sectional shape along the axial direction of the conductor guide tube is provided at the base end of the nozzle. According to this, the conducting wire that has circulated around the reel can be smoothly introduced from the base end portion of the nozzle.

  Furthermore, it is preferable that the diameter of the conductive wire winding surface of the reel is 10 times or more, more preferably 10 to 20 times the wire diameter. According to this, since the curvature of the conducting wire can be made relatively large, an excessive stress or frictional force due to bending is not applied, the guiding of the conducting wire becomes smooth, and damage to the insulating coating can be prevented.

  According to the present invention, after the conducting wire introduced through the insertion hole of the conducting wire guide tube is circulated by the reel disposed at a position facing the proximal end portion of the nozzle with respect to the insertion hole, the conductive wire is introduced into the proximal end portion of the nozzle. Since it is inserted, even a thick conducting wire applied to, for example, an automobile motor can be smoothly introduced into the nozzle, and damage to the insulating coating of the conducting wire can be effectively prevented. As a result, even a thick conductive wire applied to, for example, a motor for an automobile can be easily and efficiently wound around the inner teeth of the stator core.

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 10, the stator core 1 employed in the present embodiment has a plurality of internal teeth 2 formed at regular intervals on the inner periphery thereof, and slots 3 are formed between the internal teeth 2. . Then, the nozzle 30 of the winding device circulates around the inner teeth 2 and winds a conductive wire W around the inner teeth 2 to form a coil B.

  As shown in FIG. 8, the periphery of the winding device 10 is covered with a frame 11, and a conducting wire guide cylinder 12 is penetrated in the vertical direction in the figure. The conductor guide tube 12 is supported so as to be slidable in the vertical direction and the rotational direction via bearings 13 and 14 fixed to the bottom surface and the top surface of the frame 11. An introduction port 12a for taking in the conducting wire W is opened at the lower end of the conducting wire guide cylinder 12, and a nozzle head 15 is mounted at the upper end. The nozzles 30 are radially attached to the peripheral side surface of the nozzle head 15, and the conductive wire W introduced from the introduction port 12 a and guided into the conductive wire guide tube 12 is delivered from the nozzle 30 to be connected to the stator core 1. It is wound around the inner tooth 2.

  Further, inside the frame 11, there is provided a reciprocating operation chamber 11a that houses a reciprocating operation section 16 for reciprocating the conducting wire guide cylinder 12 in the vertical direction in the figure, and an upper portion of the reciprocating operation chamber 11a. An oscillating chamber 11b is formed that houses an oscillating portion 17 that oscillates the guide cylinder 12 in the axial circumferential direction.

  A rotary shaft 18 of the reciprocating unit 16 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 19 is pivotally attached to the tip of 18. On the other hand, the reciprocating chamber 11a is provided with guide rails 20 on both sides of the conductive wire guide tube 12, and the conductive wire guide tube 12 penetrates through the center of a slider 21 that slidably supports the guide rail 20 on both sides. Further, the slider 21 and the crank 19 are connected via a crank arm 22.

  In addition, a bracket 11c is erected in the swing chamber 11b, and the swing sleeve 23 of the swing portion 17 is rotatably supported by the bracket 11c, and on the inner periphery of the swing sleeve 23. The conductor guide tube 12 is spline-engaged. Further, a cam shaft 24 extends in the swing chamber 11b in a direction orthogonal to the conductor guide tube 12 (in FIG. 1, from the front to the back of the sheet), and this cam shaft 24 is a timing belt (not shown). Are connected to the rotary shaft 18 via the shaft and rotated synchronously.

  As shown in FIG. 9, a cam sleeve 25 is pivotally attached to the cam shaft 24, and a cam 26 is formed on the cam sleeve 25. The cam 26 is formed in a circular shape on the outer periphery of the cam sleeve 25, and the cam curve portion 26a and the cam straight portion 26b are alternately continued. A pair of cam followers 27 attached to the swing sleeve 23 in a bifurcated manner are in sliding contact with the cam 26. The pair of cam followers 27 are held in a state where the taper ribs 26c of the cam 26 are always in contact with each other, that is, in a state of backlash 0, and are always restrained with respect to the cam 26. In this case, the backlash between the cam 26 and the cam follower 27 can be taken by moving the cam shaft 24 in the direction of arrow A in FIG. Even in the case of backlash 0, the cam 26 and the cam follower 27 can rotate because the rotation direction is one direction.

  Accordingly, when the rotary shaft 18 of the reciprocating operation unit 16 is rotated by a driving device via a timing belt (none of which is shown), a crank 19 fixed to the rotary shaft 18 rotates. The slider 21 continuously provided via the crank arm 22 is supported by the guide rail 20 on both sides thereof, and reciprocates in the vertical direction in the figure.

  On the other hand, the rotation of the rotary shaft 18 is transmitted to the cam shaft 24 of the swinging portion 17 via a timing belt (not shown). Therefore, the cam shaft 24 rotates in synchronization with the rotating shaft 18. When the cam shaft 24 rotates, a cam 26 formed on the outer periphery of a cam sleeve 25 that is pivotally attached to the cam shaft 24 is attached to a swing sleeve 23 that is pivotally attached to the conductor guide tube 12. The conducting wire guide tube 12 is swung through the.

  And the nozzle 30 of the conducting wire guide cylinder 12 makes the coil B around the inner teeth 2 of the stator core 1 by the reciprocating motion and the swinging motion of the conducting wire guide tube 12 in the vertical direction. The reciprocating part 16 constitutes a crank mechanism in the present invention, and the swing part 17 constitutes a cam mechanism in the present invention.

  In this case, the nozzle 30 moves in the radial direction by a distance substantially corresponding to the line width each time the nozzle 30 makes a round by a mechanism such as that disclosed in Japanese Patent Application Laid-Open No. 2000-245121. By winding in alignment with the teeth 2, and further reciprocating in the radial direction with respect to the inner teeth 2, as shown in FIG. Since the reciprocating mechanism is already known as shown in the publication, the description thereof will be omitted.

  As shown in FIGS. 1 and 2, the nozzle head 15 includes a cylindrical member 31, three fan-shaped members 32 assembled on the outer periphery of the cylindrical member 31, and a reel holder 33 installed on the upper surface of the cylindrical member 31. Have.

  Referring also to FIG. 4, an outer tube 41 is mounted on the outer periphery of the conducting wire guide tube 12, an enlarged diameter portion 41 a is formed at the upper end of the outer tube 41, and a lower portion of the cylindrical member 31 is the expanded diameter. It is rotatably inserted into the portion 41a. In addition, the cylindrical member 31 is fixed to the upper end of the conducting wire guide cylinder 12 by a set screw 42. Further, the fan-shaped member 32 is fixed to the upper end of the outer cylinder 41 by a plurality of bolts 34 inserted from the lower surface of the enlarged diameter portion 41a. A pin 43 protruding from the lower surface of the sector member 32 is inserted into a guide hole (not shown) of the enlarged diameter portion 41a and positioned.

  The cylindrical member 31 has an annular recess 35 into which the inner periphery of the fan-shaped member 32 is fitted, and a disk-shaped nozzle guide 36 is integrally formed on the upper portion thereof. The nozzle guide 36 has a plurality of radially extending guide grooves 37, three in this embodiment. An escape groove 38 for inserting a reel, which will be described later, is formed on the opposite side of each guide groove 37 in the radial direction. In the center of the cylindrical member 31, an insertion hole 39 through which the conducting wire W is inserted is formed.

  The nozzle 30 includes a substantially rectangular parallelepiped base end portion 30a, a tip end portion 30b extending radially outward from the base end portion 30a, and an insertion hole 30c for a conducting wire W passing through the tip end portion 30b from the base end portion 30a. Have. Further, as shown in FIG. 4, a pin 30d on which a roller-like cam follower 30e is mounted projects from the lower surface of the base end portion 30a. The nozzle 30 has a base end portion 30a inserted into the guide groove 37, and is mounted so as to be able to appear and retract radially outward. The tip portion 30 b of the nozzle 30 has a flat shape that is long in the axial direction of the conductor guide tube 12. The insertion hole 30c of the nozzle 30 has a taper shape in which the inner periphery of the insertion port on the base side widens at a gentle angle, and the inner periphery of the discharge port on the tip side also expands in an R shape.

  An arcuate cam groove 40 is formed on the upper surface of the sector member 32. The cam groove 40 has one end located near the center and the other end located near the outer periphery. The cam follower 30e of the pin 30d of the nozzle 30 is inserted into the cam groove 40. As a result, when an annular body constituted by connecting three sector members 32 to the cylindrical member 31 is relatively rotated, as shown in FIG. 3 via the cam follower 30e of the pin 30d inserted in the cam groove 40. In addition, the nozzle 30 reciprocates in the radial direction. The relative rotation of the annular body formed by connecting the three fan-shaped members 32 can be performed through the outer cylinder 41 with a structure as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2000-245121.

  The reel holder 33 has a cylindrical shape having a hole 44 in the center, and a plurality of, in this embodiment, three holding grooves 45 formed radially at equal intervals in the radial direction are formed in the lower portion thereof. Referring also to FIG. 4, a reel 46 is attached to each holding groove 45 via a support shaft 51. In this case, the reel 46 is disposed on the opposite side to the corresponding nozzle 30 with respect to the radial direction with the insertion hole 39 of the cylindrical member 31 interposed therebetween. Further, as shown in FIG. 6, the three reels 46 are supported at slightly different heights, with the positions of the support shafts 51 being shifted in the height direction.

  In addition, the diameter of the conductive wire winding surface of the reel 46 is preferably 10 times or more of the wire diameter, and more preferably 10 to 20 times. If the diameter is less than 10 times the wire diameter, damage to the conductive wire W cannot be effectively prevented, and if the diameter exceeds 20 times, the nozzle head 15 becomes large and difficult to insert into the stator core.

  In the upper part of the reel holder 33, an auxiliary groove 47 for facilitating the insertion work of the conducting wire W is formed at a position facing the holding groove 45. Further, the reel holder 33 is formed with a plurality of bolt insertion holes 48 penetrating the upper and lower surfaces, and correspondingly, screw holes 49 are formed on the upper surface of the nozzle guide 36 of the cylindrical member 31. Then, the reel holder 33 is mounted on the cylindrical member 31 by the mounting bolt 50 being screwed into the screw hole 49 through the bolt insertion hole 48. At this time, the downward projecting portion of each reel 46 is inserted into the relief groove 38 of the nozzle guide 36 of the cylindrical member 31.

  Next, the operation of the winding device 10 will be described.

  As shown in FIG. 4, the conductive wire W inserted through the conductive wire guide tube 12 passes through the insertion hole 39 of the cylindrical member 31, and the corresponding reel 46 held by the reel holder 33 in the distal direction of the conductive wire guide tube 12. Is wound around the outer periphery located at the center of the wire guide tube 12, drawn out from the outer periphery located in the proximal direction of the conductor guide tube 12, and inserted into the insertion hole 30 c from the proximal end portion 30 a of the nozzle 30.

  In the case of this embodiment, three conductors W are inserted into the conductor guide tube 12 and wound around the corresponding reel 46, and then, the conductor W is inserted into the corresponding nozzle 30. The conducting wires W are drawn from the nozzles 30 of the book. In this case, since the height of the support shaft 51 of each reel 46 is slightly shifted, it is possible to prevent the conductive wires W from coming into contact with each other at a portion intersecting at the insertion hole 39.

  With the structure shown in FIGS. 8 and 9, the nozzle head 15 reciprocates in the axial direction while swinging, so that the tip portion 30 b of the nozzle 30 circulates the inner teeth 2 of the stator core 1. The conducting wire W is wound around the outer periphery of the inner tooth 2.

  At this time, an annular body constituted by connecting the fan-shaped member 32 via the outer cylinder 41 rotates relative to the cylindrical member 31 and via the cam follower 30e of the pin 30d inserted into the cam groove 40. The nozzle 30 reciprocates in the radial direction. This movement in the radial direction is shifted in the radial direction by the width of the conductive wire W when the nozzle 30 makes a round of the inner teeth 2, and as a result, the conductive wire W is moved in the radial direction as shown in FIG. 10. They are aligned and wrapped around multiple layers.

  FIG. 4 shows a state in which the nozzle 30 located at an intermediate height of the three nozzles 30 protrudes to the maximum in the radial direction, and FIG. 5 shows the nozzle 30 inward in the radial direction. Shows the state of being sunk to the maximum. Thus, according to the winding device of the present invention, the conductive wire W is wound around the reel 46 and inserted into the insertion hole 30c from the base end portion of the nozzle 30. The reel 46 is bent only at the part that circulates. For this reason, excessive bending stress and frictional force are not applied to the conductive wire W, and for example, even a thick conductive wire applied to a motor for an automobile can effectively prevent damage to the insulating coating of the conductive wire, and Line operation can be performed smoothly at high speed.

  6 and 7 are schematic views showing the support positions of the reels 46 corresponding to the three nozzles 30 in an overlapping manner. The reel 46 at the lowest position and the reel 46 are wound around and introduced into the nozzle 30. The conducting wire W is shown by a solid line, and the reel 46 and the conducting wire W at other heights are shown by imaginary lines. In the case of the reel 46 at the lowest position indicated by the solid line, the conductive wire W is drawn from the outer periphery of the lower portion of the reel 46 in the tangential direction and inserted into the insertion hole 30c of the nozzle 30 from slightly below. Since the inner periphery of the insertion port of the insertion hole 30c has a tapered shape that spreads at a gentle angle, the insertion hole of the nozzle 30 does not hit the insertion port strongly, and is inserted into the insertion hole 30c of the nozzle 30 almost linearly. Can do.

  FIG. 6 shows a state in which the nozzle 30 protrudes to the maximum in the radial direction, and FIG. 7 shows a state in which the nozzle 30 sinks to the maximum in the radial direction. Since the conductive wire W is bent mainly only at the portion that circulates around the reel 46, an excessive bending stress or frictional force is not applied to the conductive wire W, and the above-described actions and effects can be obtained. Even when the reel 46 is supported at the highest position, similar actions and effects can be obtained.

  1 to 10, the winding device (Example) according to the present invention, the winding device having the winding head shown in FIGS. 11 and 12 (Comparative Example 1), and the winding head in FIG. Using the winding device (Comparative Example 2) having the structure shown, the tension (kg) when winding the conducting wire W having a wire diameter of 1.45 mm was measured. The tension was measured by measuring the value when the back tension device was scaled to 0 in the direction perpendicular to the nozzle outlet.

  As shown in FIGS. 11 and 12, the winding device of Comparative Example 1 has a chamfer extending in an arc shape in the upper end opening of the insertion hole 39 of the cylindrical member 31, and the insertion hole of the nozzle 30. The base end opening of 30c also has a shape in which the cross section expands in an arc shape. FIG. 11 shows a state in which the nozzle 30 protrudes maximally outward in the radial direction, and the conductive wire W is bent mainly at points A and B and introduced into the insertion hole 39 of the nozzle 30. FIG. 12 shows a state in which the nozzle 30 is sunk to the maximum inward in the radial direction, but the lead wire W changes its course in a substantially perpendicular direction at a point B that contacts the inner periphery of the base end of the nozzle 30. It is inserted into the insertion hole 30c. Therefore, the nozzle 30 is bent at a relatively small radius on the inner periphery of the base end opening.

  In the winding device of Comparative Example 2, a relatively small reel 52 is rotatably mounted on the inner periphery of the upper end opening of the insertion hole 39 of the cylindrical member 31, as shown in FIG. The conducting wire W passes through the insertion hole 39 of the cylindrical member 31, contacts the reel 52, and is then introduced into the insertion hole 30 c of the nozzle 30. However, in this winding device as well, although illustration is omitted, when the nozzle 30 is sunk to the maximum inward in the radial direction, the nozzle 30 is bent at a considerably small radius at the portion that contacts the small reel 52. It will be introduced into 30 insertion holes 30c.

  The results of measuring the tension of the conductive wire W by the winding devices of the example, comparative example 1 and comparative example 2 are shown below.

(1) In the case of the winding device of the embodiment When the nozzle 30 is projected to the maximum extent outward in the radial direction (see FIG. 4)... 8 kg
When the nozzle 30 is sunk to the maximum inward in the radial direction (see FIG. 5) ... 8 kg
(2) In the case of the winding device of Comparative Example 1 When the nozzle 30 protrudes to the maximum extent outward in the radial direction (see FIG. 11) ... 12.5 kg
When the nozzle 30 is sunk to the maximum inward in the radial direction (see FIG. 12) ... 14.5 kg
(3) In the case of the winding device of Comparative Example 2 When the nozzle 30 protrudes to the maximum extent outward in the radial direction (see FIG. 13) ... 11.0 kg
When the nozzle 30 is sunk to the maximum inward in the radial direction (not shown) ... 12.0 kg

  In the winding device of the above-described embodiment, the radius of curvature is increased by increasing the diameter of the reel, so that the force for bending the conducting wire is reduced. Further, in the sliding friction as in Comparative Example 1, the friction coefficient μ = 0.1 to 0.2, but in the rolling friction as in Example and Comparative Example 2, the friction coefficient μ = 0.01 to 0.00. 05. For this reason, in the winding device of the embodiment, the tension of the conducting wire is significantly smaller than those of Comparative Examples 1 and 2. Further, the tension does not change at all depending on the position of the nozzle 30.

  On the other hand, in the winding device of Comparative Example 1, since sliding friction works, the tension of the conducting wire becomes the largest, and when the nozzle is retracted, the conducting wire is bent almost at a right angle, so that the tension is further increased, and the nozzle The tension changes greatly depending on the position. When the tension changes in this way, the tension applied to the conductor changes depending on whether the outer diameter side of the inner teeth of the stator core is wound or the inner diameter side is wound. The alignment may be disturbed.

  Further, in the winding device of Comparative Example 2, although it is rolling friction, the reel diameter cannot be increased due to the relationship of the mounting position of the reel, so the radius of curvature is reduced and a force for bending the conducting wire is required. Compared with the winding device of the embodiment, the tension is considerably large.

  As described above, according to the winding device of the present invention, the tension applied to the conducting wire W for drawing the conducting wire W from the nozzle in accordance with the winding operation can be remarkably reduced, and the change of the tension depending on the nozzle position can be reduced. Can prevent damage to the insulation coating of the conductor W, minimize the decrease in wire diameter due to the extension of the conductor W, and wind the conductor in alignment with the inner teeth of the stator core. It becomes.

  The present invention provides a winding method and a winding apparatus for forming a coil by directly winding a conductive wire around an inner tooth of a stator core, and particularly, a compact and high performance such as a power steering of an automobile and a motor of an electric automobile. It is suitable for the winding of a stator core for a motor that is required to be.

It is a disassembled perspective view of the nozzle head which shows one Embodiment of the winding apparatus by this invention. It is a perspective view of the nozzle head of the winding apparatus. It is sectional drawing seen by cutting at the intermediate height position of the nozzle of the nozzle head of the winding apparatus. It is the longitudinal cross-sectional view of the nozzle head which shows the path | route of the conducting wire supplied through the reel of intermediate height in the state which the nozzle of the same winding apparatus protruded to the radial direction maximum. It is the longitudinal cross-sectional view of the nozzle head which shows the path | route of the conducting wire supplied through the reel of intermediate height in the state which the nozzle of the same winding apparatus was maximally sunk radially inward. It is the longitudinal cross-sectional view of the nozzle head which shows the path | route of the conducting wire supplied via the reel of the low position in the state which the nozzle of the same winding apparatus protruded to the radial direction maximum. It is the longitudinal cross-sectional view of the nozzle head which shows the path | route of the conducting wire supplied via the reel of the low position in the state where the nozzle of the coil | winding apparatus was maximally sunk radially inward. It is a schematic cross section which shows schematic structure of the drive mechanism of the winding apparatus. It is explanatory drawing which shows the cam used for the rocking | fluctuation mechanism of the winding apparatus. It is explanatory drawing which shows the state wound on the internal tooth of a stator core by the same winding apparatus. FIG. 6 is an explanatory diagram showing a state in which the nozzle is a nozzle head of Comparative Example 1 used for comparison of tension applied to a conducting wire, and the nozzle protrudes to the maximum in the radial direction. It is a nozzle head of the comparative example 1 used for the comparison of the tension | tensile_strength concerning conducting wire, Comprising: It is explanatory drawing which shows the state which the nozzle was sunk to the maximum in radial direction. It is a nozzle head of the comparative example 2 used for the comparison of the tension concerning a conducting wire, Comprising: It is explanatory drawing which shows the state which the nozzle protruded to the radial direction outward to the maximum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator core 2 Internal tooth 3 Slot 10 Winding apparatus 11 Frame 11a Reciprocating operation chamber 11b Oscillating chamber 12 Conductor guide cylinder 15 Nozzle head 16 Reciprocating operating unit 17 Oscillating unit 18 Rotating shaft 19 Crank 20 Guide rail 21 Slider 22 Crank arm 23 Oscillating sleeve 24 Cam shaft 25 Cam sleeve 26 Cam 26a Cam curve portion 26b Cam linear portion 26c Taper rib 27 Cam follower 30e Cam follower 30 Nozzle 30d Pin 30a Base end portion 30b Tip end portion 30c Insertion hole 31 Cylindrical member 32 Fan-shaped member 33 Reel holder 34 Bolt 35 recess 36 nozzle guide 37 guide groove 38 groove 39 insertion hole 40 cam groove 41 outer cylinder 41a enlarged diameter portion 42 screw 43 pin 44 hole 45 holding groove 46 reel 47 auxiliary groove 48 bolt insertion hole 49 screw hole 50 bolt 51 support shaft 52 Lee W conductor

Claims (4)

A conductor guide tube that is coaxially disposed at the center of the stator core, swings at a predetermined angle, and reciprocates in the axial direction, a nozzle head attached to the tip of the conductor guide tube, and through this nozzle head And extending in a direction substantially perpendicular to the conducting wire guide cylinder and mounted so as to be able to project and retract radially outward with respect to the conducting wire guide cylinder. In the winding device to the stator core provided with the nozzle to feed out,
The nozzle head is provided with an insertion hole for the conducting wire guide tube in between and a support shaft that intersects the conducting wire guide tube and the nozzle at a right angle on the opposite side to the nozzle in the radial direction. The reel is mounted, and the conductive wire introduced through the insertion hole is wound around the outer periphery of the reel that is positioned in the distal direction of the conductive wire guide tube, and then is positioned in the proximal direction of the conductive wire guide tube. A winding device for a stator core, wherein the winding device is configured to be drawn from an outer periphery and inserted into a proximal end portion of the nozzle. A plurality of nozzles are mounted on the nozzle head in a radial pattern with respect to the wire guide tube, the reels are mounted corresponding to the nozzles, and the positions of the spindles of the reels 2. The stator core according to claim 1 , wherein the lead wires are offset in the axial direction of the lead wire guide tube, and are set so that the lead wires inserted into the base end portion of the nozzle through the reels do not contact each other. Winding device. The winding device to the stator core according to claim 1 or 2 , wherein an insertion port that extends toward the opening is provided in a cross-sectional shape along the axial direction of the conducting wire guide tube at a base end portion of the nozzle. . The winding device around the stator core according to any one of claims 1 to 3 , wherein a diameter of a conductive wire winding surface of the reel is 10 times or more a wire diameter of the conductive wire.

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