JPH10178767A - Apparatus for winding wire on stator core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire winding apparatus capable of winding a conductor around the inner teeth of a stator core, on which the wire is to be wound, uniformly in the radial direction. SOLUTION: Nozzles 14 are installed at the tip of a conductor interdicting cylinder 12, that is positioned coaxially with the center of a stator core 11, swings at a specified angle, and reciprocates in the axial direction. When conductors W fed out of the nozzles 14 are wound around inner teeth 11a, and guide jigs 27 positioned, so that the upper and lower end faces of the inner teeth 11a are clamped between the guide jugs 27, are advanced and retreated in the radial direction, to gradually vary the winding position of the conductors W that are slid on the tapered surfaces of the guide jugs 27 and are wound around the inner teeth 11a, and thereby the conductors W are evenly wound around the inner teeth 11a in the radial direction. The movement of the guide jugs 27 is accomplished by inserting cam followers 34, installed at the base of guide rods 24 coupled with the guide jigs 27 into the cam groove 33, formed in an annular disk 31 and swinging the disk 31 at a specified angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for a stator core in which a conductor is directly wound around inner teeth of a stator core to form a coil.

[0002]

2. Description of the Related Art In general, a winding device for forming a coil by directly winding on the inner teeth of a stator core is coaxially arranged at the center of the stator core, swings at a predetermined angle and reciprocates in the axial direction. The lead-in tube is provided with a nozzle attached to the leading end of the lead-in tube to feed the lead in a direction substantially orthogonal to the lead-in tube. Then, the tip of the nozzle is caused to orbit around the internal teeth of the stator core to be wound by the movement of the conductive wire introducing cylinder, and the conductive wire fed from the nozzle is directly wound around the internal teeth to form a coil.

In such a series winding type winding device, in order to increase the number of windings of the conductor as much as possible and to increase the space factor of the conductor entering the slot, the winding is uniformly performed along the radial direction of the internal teeth of the stator core. The conductor must be wound. For this reason, the following devices are known.

One of them is to dispose a guide rod extending in the radial direction of the stator core in the vicinity of both end faces of the internal teeth of the stator core, and to slide down the conductor along a tapered surface provided at the tip of the guide rod. The winding position of the conductive wire is guided, and the guide rod is gradually advanced and retracted in the radial direction, so that the winding position of the conductive wire is gradually shifted to uniformly wind the inner teeth in the radial direction. Device.

In the above-described conventional apparatus, the guide rods provided corresponding to the internal teeth to be wound are moved forward and backward in the radial direction by different driving sources. For example, the base end of each guide rod is brought into contact with a cam rotated by a motor to swing each guide rod.

Further, as another device for uniformly winding a conductive wire along the radial direction of the internal teeth of the stator core, there is also known a device in which a protruding length of a nozzle with respect to a conductive wire introducing cylinder is gradually changed. I have.

For example, JP-A-61-266050 discloses that
The lead wire introduction tube is composed of multiple tubes, a gear is provided at the upper end of the center shaft, and a rack formed at the base end of the nozzle is meshed with another gear that meshes with this gear. Separately from the movement for the winding of the above, by rotating the center cylinder and moving the nozzle in and out radially through the gear and the rack, the winding position of the internal teeth in the radial direction is gradually increased. Displaced devices are disclosed.

In Japanese Unexamined Utility Model Publication Nos. 61-27474 and 61-41378, a nozzle arm is pivotably attached to the upper end of a lead wire introducing cylinder, and a nozzle for feeding a lead wire is attached to the upper end of the nozzle arm. The lower end of the nozzle arm is urged by a spring to press against the cam, and the cam is rotated at a predetermined speed to swing the nozzle arm, thereby causing the nozzle to protrude and retract in the radial direction, thereby causing the radius of the internal teeth to increase. A device in which the winding position in the direction is gradually shifted is disclosed.

[0009]

However, in the above-mentioned apparatus using the conventional guide rod, the guide rods provided corresponding to the internal teeth to be wound are respectively swung by separate driving devices. In the case where there are a plurality of nozzles extending radially at the upper end of the lead wire introducing tube so that winding can be performed on a plurality of internal teeth at the same time, a guide rod provided corresponding to each internal tooth to be wound is provided. In addition, it is necessary to provide a driving device including a cam and a motor, which causes a problem that the manufacturing cost is increased and the device is enlarged.

[0010] Further, the nozzle inserted in the center of the electric wire introduction tube disclosed in Japanese Patent Application Laid-Open No. 61-266050 is independently rotated so that the nozzle is made to protrude and retract in a radial direction via a gear and a rack. Gears and racks must be built into the head of the wire introduction cylinder, making it difficult to make a device that can be applied to a small stator core, and the drive mechanism for moving the nozzle up and down is complicated. However, there is a problem that the manufacturing cost is increased.

Further, in the apparatus disclosed in Japanese Utility Model Laid-Open No. 61-27474 and Japanese Utility Model Laid-Open No. 61-41378, in which the nozzle arm is swung by a cam to move the nozzle in and out in the radial direction, the base of the nozzle arm is used. Since the end slides on the cam surface at a high speed, there is a problem that noise during operation is large, the cam surface is worn and grooves are formed, and parts must be replaced frequently.

Accordingly, an object of the present invention is to provide a relatively compact and simple structure, in which a conductor can be wound around the inner teeth of the stator core to be wound in the radial direction with an average being wound around the stator core. Wire device.

[0013]

In order to achieve the above-mentioned object, a first aspect of the present invention is to provide a lead wire introduction tube which is coaxially arranged at the center of a stator core, swings at a predetermined angle, and reciprocates in an axial direction. And attached to the end of this lead-in tube,
A nozzle that feeds a conductor in a direction substantially perpendicular to the conductor introduction tube, and is disposed close to both end surfaces of the internal teeth of the stator core to be wound, so that the wound conductor slides down from the tip. In a winding device for a stator core having a tapered shape, and a guide rod that swings in a radial direction of the stator core during a winding operation to guide a winding position of a conductive wire, the guide rod is attached to a device frame. It is housed in the provided guide groove along the radial direction and is held so as to be slidable in the radial direction.In the device frame, an annular disk surrounding the stator core is held rotatably,
A cam groove oblique to the radial direction is formed at a predetermined position of the disk, a cam follower attached to the base end of the guide rod is inserted into the cam groove, and the disk is swung at a desired angle and speed. The present invention provides a winding device for a stator core, characterized in that a driving device for moving the stator core is provided.

According to a second aspect of the present invention, in the first aspect, a plurality of nozzles are radially attached at a predetermined angle to a distal end of the conducting wire introduction cylinder, and the plurality of nozzles are wound by these nozzles. The guide rods are provided corresponding to the respective teeth, and a cam follower attached to the base end of each of the guide rods is provided with a winding device for a stator core inserted into a corresponding cam groove formed in the disk. Is provided.

A third aspect of the present invention is to provide a winding device for a stator core according to the first or second aspect, wherein the disk driving device has a stepping motor or a servomotor. is there.

According to the first aspect of the present invention, the lead wire introducing tube is swung at a predetermined angle and reciprocated in the axial direction so that the nozzle mounted at the tip of the lead wire introducing tube is fixed to the predetermined position of the stator core to be wound. When the coil is formed by winding around the internal teeth of the conductor and winding the lead wire fed from the nozzle around the internal teeth, the annular disk is swung at a predetermined angle, via the cam follower inserted in the cam groove. The guide rod is swung in the radial direction of the stator core, and the winding position of the wire that slides down from the tip of the guide rod and winds around the internal teeth is gradually shifted in the radial direction of the internal teeth, so that the conductive wire is It can be wound on average along the radial direction.

According to the second aspect of the present invention, since a plurality of nozzles are radially attached to the leading end of the lead wire introducing cylinder, the plurality of nozzles are respectively circulated around the corresponding internal teeth of the stator core. Can be wound at the same time on the internal teeth. At this time, the guide rods provided corresponding to the respective internal teeth can be simultaneously swung by swinging the annular disk. Therefore, the drive mechanism for swinging the plurality of guide rods is simplified, and only one drive source is required.

According to the third aspect of the present invention, since the disk driving device has a stepping motor or a servomotor, the disk can be swung accurately at a desired speed and angle, and the internal teeth can be rotated. , The winding density along the radial direction can be freely adjusted.

[0019]

1 to 3 show one embodiment of a winding device for a stator core according to the present invention. FIG.
2 is a plan view showing a main part of the winding device, FIG. 2 is a front sectional view showing a main part of the winding device, and FIG. 3 is an explanatory diagram showing a relationship between an annular disk and a guide rod.

This winding device has a conductor introduction tube 12 which is coaxially arranged at the center of the stator core 11 and into which a conductor is introduced from the lower end. At the tip of the lead-in tube 12,
A plurality of nozzles 14 are radially attached via the head 13, and the conductors W introduced from the lower end of the conductor introduction tube 12 are respectively fed out of the nozzles 14.

The conducting wire introduction cylinder 12 is swung (reciprocatingly rotated) at a predetermined angle as shown by an arrow A in FIG. 2 by a known driving mechanism as shown in Japanese Patent Application Laid-Open No. 2-214446 by the present applicant. ) And reciprocate in the axial direction as shown by arrow B, and
1a.

That is, the nozzle 14 passes through a slot on one side of the internal teeth 11a to be wound, for example, from below to above and protrudes from the upper end surface of the stator core 11, so that the nozzle 14 is positioned on the slot on the other side. By passing through the slot on the other side downward from above and projecting from the lower end face of the stator core 11, it turns again so as to be located below the first slot. , Orbiting around the internal teeth 11a to connect the conductive wire W to the internal teeth 11a.
Wrap around a.

In particular, as shown in FIG. 2, a main body frame 15 having a central opening is disposed above the conductor introducing tube 12. Annular support plates 16 and 17 are concentrically attached to the central opening of the main body frame 15 from the outside, and the stator core 11 is installed on the inside support plate 17. A holding member 36 that moves up and down by a drive mechanism (not shown) is disposed above the support plate 17, and presses an upper edge of the stator core 11 installed on the support plate 17 to detachably fix the stator core 11. It is supposed to.

On the lower surface of the main body frame 15, a lower guide bar 18 is held by a pressing plate 19 so as to be slidable in the radial direction. A guide jig 21 having a tapered surface 20 is attached to the tip of the lower guide rod 18.

An air cylinder 22 is mounted on the lower surface of the main body frame 15, and the upper cylinder 2 can be moved up and down with respect to the main body frame 15 by the air cylinder 22.
3 are supported. On the lower surface of the upper frame 23, an upper guide rod 24 is held by a pressing plate 25 so as to be slidable in the radial direction. A guide jig 27 having a tapered surface 26 is attached to the tip of the upper guide rod 24.

The upper guide rod 24 and the lower guide rod 18 are connected by a connecting shaft 28.
In order to penetrate 8, the holding plate 25, the frame 15, and the holding plate 19 are formed with through holes 25a, 15a, and 19a along the sliding direction of the guide rods 24 and 18.

2 and 3, an annular groove 30 is formed in the lower surface of the upper frame 23, and an annular disk 31 is rotatably held in the annular groove 30. . A gear 31a is formed on a part of the outer periphery of the disc 31. A drive gear 32 rotated by a stepping motor (not shown) meshes with the gear 31a, and
1 is swung (reciprocating rotation) at a desired angle and speed.

On the circumference of the disk 31, cam grooves 33 oblique to the radial direction are formed corresponding to the respective upper guide rods 24. A cam follower 34 mounted on the upper end is inserted. Accordingly, when the disk 31 swings as shown by the arrow C in FIG. 3, the upper guide rod 24 is moved in the radial direction as shown by the arrow D in FIG. 3 via the cam follower 34 inserted into the cam groove 33. , And the lower guide rod 18 connected to the upper guide rod 24 by the connection shaft 28 also reciprocates at the same time.

Next, the operation of the coil winding device will be described. As described above, the wire introduction tube 12 swings (reciprocates) at a predetermined angle as shown by an arrow A in FIG. 2 and reciprocates in the axial direction as shown by an arrow B. A nozzle 14 provided at the upper end of 12 orbits around the corresponding internal teeth 11a of the stator core 11, thereby winding a conductive wire W around the internal teeth 11a to form a coil.
In the case of this embodiment, since the plurality of nozzles 14 are formed radially, winding is simultaneously performed on the corresponding plurality of internal teeth 11a.

During this winding operation, a stepping motor (not shown) operates, and the circular disk 31 swings at a predetermined angle via the drive gear 32 and the gear 31a. Then
The upper and lower guide rods 24, 18 move in the radial direction via the cam followers 34 inserted in the cam grooves 33 of the disk 31. Since guide jigs 27 and 21 are attached to the tips of the upper and lower guide rods 24 and 18, respectively.
The tip positions of the guide jigs 27 and 21 change repeatedly in the radial direction.

The conductive wire W fed from the nozzle 14 is wound around the tapered surfaces 26, 20 of upper and lower guide jigs 27, 21 sandwiching the upper and lower end surfaces of the internal teeth 11a of the stator core 11, and slides on the tapered surfaces 26, 20. And guide jig 2
By being detached from the tips of 7 and 21, it is wound around the internal teeth 11a. Therefore, when the leading end positions of the guide jigs 27 and 21 move in the radial direction, the winding positions of the internal teeth 11a slightly shift in the radial direction, and the conductive wires W are averaged in the radial direction of the internal teeth 11a. Can be wound.

The guide jigs 27, 2 are controlled by controlling a stepping motor for rotating the drive gear 32.
Since the moving speed and the moving distance of the internal teeth 11a can be freely changed, there is an advantage that the inner teeth 11a can be freely adjusted such that the inner teeth 11a are wound thicker on the base side and thinner on the tip side. Further, even if the shape or size of the stator core to be wound is changed, it can be dealt with only by changing the control of the stepping motor in accordance with the change, and the setup change when the type of the stator core changes becomes easy.

The change in the thickness of the stator core can be dealt with only by changing the height of the upper frame 23 with respect to the main body frame 15. The height of the upper frame 23 can be set, for example, by inserting a spacer having an appropriate thickness between the main body frame 15 and the upper frame 23 when the upper frame 23 is lowered by the air cylinder 22.

[0034]

As described above, according to the present invention,
The annular disk is swung at a predetermined angle, and the guide rod is swung in the radial direction of the stator core via the cam follower inserted into the cam groove, and slides down from the tip of the guide rod to wind around the internal teeth. The winding position of the conductive wire is gradually shifted in the radial direction of the internal teeth, so that the conductive wire can be averagely wound along the radial direction of the internal teeth. In addition, even when multiple nozzles are radially attached to the end of the conductor introduction tube and winding is performed simultaneously on multiple internal teeth, the guide rod provided for each internal tooth swings the annular disk. By doing so, it is possible to swing simultaneously, so that a drive mechanism for swinging a plurality of guide bars is simplified, and the advantage that only one drive source is required is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a winding device for a stator core according to the present invention.

FIG. 2 is a front sectional view showing a main part of the winding device.

FIG. 3 is a plan view showing a relationship between an annular disk and a guide rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Stator core 11a Internal tooth 12 Conductor introduction cylinder 13 Head 14 Nozzle 15 Main body frame 16, 17 Support plate 18 Lower guide rod 19 Pressing plate 20 Tapered surface 21 Guide jig 22 Air cylinder 23 Upper frame 24 Upper guide rod 25 Pressing plate 26 Taper Surface 27 Guide jig 30 Annular groove 31 Annular disk 31a Gear 32 Drive gear 33 Cam groove 34 Cam follower W Conductor

Claims (3)

[Claims] 1. A lead wire introduction tube which is coaxially arranged at the center of a stator core, oscillates at a predetermined angle, and reciprocates in an axial direction, and is attached to a tip of the lead wire introduction tube to connect the lead wire to the lead wire introduction tube. And a nozzle that feeds out in a direction substantially perpendicular to the inner surface of the stator core. A guide rod that swings in the radial direction of the stator core during the wire operation to guide the winding position of the conductive wire, wherein the guide rod extends along a radial direction provided on the device frame. It is accommodated in the guide groove and held so as to be slidable in the radial direction, and an annular disk surrounding the stator core is rotatably held in the apparatus frame. A cam groove oblique to the direction is formed, a cam follower attached to the base end of the guide rod is inserted into the cam groove, and a drive device for swinging the disc at a desired angle and speed is provided. A winding device for a stator core. 2. A plurality of nozzles are radially attached at a predetermined angle to a distal end of the conductor introduction tube, and the guide rods are provided corresponding to the internal teeth wound by the nozzles, respectively. 2. The winding device for a stator core according to claim 1, wherein cam followers attached to the base ends of the guide rods are inserted into corresponding cam grooves formed in the disk. 3. The winding device for a stator core according to claim 1, wherein the disk driving device has a stepping motor or a servo motor.