JP2000050581A - Stator manufacturing equipment and stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce labor required for connecting a coil between slots by providing a mechanism for drawing out a coil bobbin to be wound thereby reducing swelling at the coil side face part in a stator core having high space factor and enhancing alignment. SOLUTION: A core fixing/supporting mechanism 13 fixes and supports a stator core 3. A bobbin draw-out mechanism 21 draws out a coil bobbin from the core 3 a bobbin lock mechanism 22 holds the coil bobbin fixedly and a flyer head 12 wind a wire around a coil bobbin thus drawn out. Subsequently, a winding fixing/supporting mechanism 20 descends from above the core 3 and fixes a wound coil winding a led puller 18 operating from the rear of the core 3 leads out the wire by a specified amount. A slit insertion mechanism 15 inserts the wire into a slit made in the coil bobbin. A winding shaping member 14 shapes the wound coil winding to eliminate swelling at the side face part. The bobbin draw-out mechanism 21 inserts the finished coil bobbin into the core 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator manufacturing device and a stator, and more particularly, to a stator manufacturing device and a stator manufacturing device which reduce the number of coil winding steps of each phase and the number of coil connection steps between slots. Regarding the stator.

[0002]

2. Description of the Related Art Generally, a stator of a rotating electrical machine insulates a stator core having a slot formed between teeth arranged in a circumferential direction, a coil disposed inside the slot, and a core and the coil. It is formed from an insulator.

Conventionally, when manufacturing a tooth-shaped stator, electromagnetic steel sheets punched into the same shape as an iron core by a mold are laminated to a predetermined thickness, an insulator is inserted into a slot, and then a coil is wound. After the coil is wound, the tip of the coil is connected, and the core is fixed with a varnish or the like for the purpose of insulation between the core and the coil.

In order to wind a coil around a stator core, a method of inserting a coil previously wound around a dedicated jig into a slot (hereinafter, referred to as an “inserter method”) and a cylindrical shape are used. A method in which a coil coming out of a bobbin is wound around each tooth portion in an aligned manner (hereinafter, referred to as a "teeth portion concentrated winding method") is performed. Among these tooth concentrated winding methods, a method in which a nozzle winds a coil around each tooth while entering and exiting the inside of a slot (hereinafter referred to as a "nozzle method"), and a jig called a flyer is a winding object. A method of winding a coil by rotating around a stator core, a bobbin, etc. (hereinafter, referred to as a “flyer method”)
And that's been done. And Japanese Patent Laid-Open No. 9-215246.
However, it has not been known that the bobbin is pulled out and inserted again.

[0005] In recent years, rotary electric machines have tended to increase the coil space factor in the slot (hereinafter referred to as "space factor") for the purpose of miniaturization and higher efficiency. For this purpose, it is known that among the above-described coil winding methods, the tooth portion concentrated winding method that can improve the coil alignment and reduce the coil end is suitable. However, according to this method, the beginning and end of winding of the coil occur in each slot, so that connection of the ends of each coil is required, and more coil connections are required than in the inserter method conventionally used. . Furthermore, in the case of the tooth portion concentrated winding method, it has been difficult for the flyer method, which has been widely used in the past, to suppress the swelling caused by insufficient coil deformation at the coil side portion and to wind the coil with good alignment. .

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to reduce swelling of a coil side portion in a stator core having a high space factor, improve alignment,
It is another object of the present invention to provide a tooth-shaped stator having a small number of coil connections between slots and a small number of manufacturing steps, and an apparatus for manufacturing the same.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a stator manufacturing apparatus for manufacturing a stator by continuously winding an electric wire by a flyer method on a plurality of coil bobbins inserted into a tooth-shaped stator core. This is a stator manufacturing apparatus provided with a bobbin pullout mechanism that pulls out a coil bobbin to be wound.

Further, the present invention is a stator manufacturing apparatus provided with a core fixing support mechanism for fixing and supporting a stator core.

The present invention is a stator manufacturing apparatus including a bobbin rotation restricting mechanism for restricting rotation of the coil bobbin when winding an electric wire around the coil bobbin.

Further, the present invention is a stator manufacturing apparatus provided with a roller for correcting the bending of the electric wire at the tip of an arm for supplying the electric wire.

Further, the present invention is a stator manufacturing apparatus provided with a key-shaped jig for pulling out a crossover portion of the electric wire.

Further, the present invention is a stator manufacturing apparatus provided with a winding fixing holding mechanism for fixing and holding a coil winding.

Further, the present invention is a stator manufacturing apparatus provided with a slit insertion mechanism for inserting the electric wire into a slit of the coil bobbin at the time of starting winding and at the end of winding.

Further, the present invention is a stator manufacturing apparatus provided with a crossover avoiding mechanism for avoiding a crossover portion of an electric wire.

Further, the present invention is a stator manufacturing apparatus provided with a core fixing jig having a space for avoiding a crossover portion to be avoided.

Further, the present invention is a stator manufacturing apparatus provided with a winding forming member for shaping a coil winding by pressing it from a side surface.

Further, the present invention is a stator manufacturing apparatus provided with an iron core rotating mechanism for rotating a stator iron core into which a coil is inserted by a predetermined angle.

Further, the present invention is a stator manufacturing apparatus provided with an electric wire cutting mechanism for cutting an electric wire drawn after continuous winding into a predetermined length.

Further, the present invention relates to a stator comprising a stator core, a stator coil comprising a coil winding and a coil bobbin, and the like, wherein the coil bobbin has a slit for inserting a start part and an end part of the coil winding. Is a stator having:

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described. Hereinafter, an embodiment of the stator manufacturing apparatus of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram illustrating an outline of a stator manufacturing apparatus according to an embodiment. FIG. 2 is an explanatory diagram of a bobbin winding state in the stator manufacturing apparatus according to the embodiment. Drawing 3 is an explanatory view of stator iron core part storage of a bobbin in a stator manufacturing device of an example. FIG. 4 is an explanatory diagram of coil shaping in the stator manufacturing apparatus according to the embodiment. FIG. 5 is an explanatory diagram of a crossover process in the stator manufacturing apparatus according to the embodiment. FIG. 6 is an explanatory diagram of a crossover process after winding in the stator manufacturing apparatus according to the embodiment. Drawing 7 is an explanatory view of operation of a guide mechanism in a stator manufacturing device of an example. Drawing 8 is an explanatory view of the shape of the bobbin used for the stator manufacturing device of an example. FIG. 9 is an explanatory diagram of the operation of the unit for storing the crossovers in the stator manufacturing apparatus according to the embodiment. FIG. 10 is an explanatory diagram of a stator core and a coil manufactured by the stator manufacturing apparatus according to the embodiment. FIG.
It is explanatory drawing of the stator manufactured by the stator manufacturing apparatus of an Example.

An embodiment will be described. As shown in FIG. 1, the stator manufacturing apparatus 1 of the present embodiment includes a head unit 11, a flyer head 12, an iron core receiving unit 13, a shaping unit 14, an electric wire guide unit 15, a cutting unit 16,
A lead puller operating unit 17, a lead puller 18, a crossover processing unit 19, a coil holding unit 20, a bobbin operating unit 21, a bobbin fixing jig unit 22,
It has a support 23, a table unit 24, and the like.

The head unit 11 includes a coil bobbin 41
The wire is wound continuously by the flyer method. The flyer head 12 winds the electric wire around the coil bobbin 41. The iron core receiving unit 13 is an iron core fixed support mechanism, and fixedly supports the stator iron core 3. Further, the present invention is a stator core fixing jig having a crossover part avoidance space therein. The shaping unit 14 is a winding shaping member, and shapes a bulge of the coil winding 43. The electric wire guide unit 15 is a slit insertion mechanism that guides and inserts an electric wire into the slit 42 of the coil bobbin 41. The cutting unit 16 is a wire cutting mechanism, and cuts the wound wire at a predetermined position. The read puller operating unit 17 moves the read puller 18 to a predetermined position. The lead puller 18 is a key-shaped jig, and when operated, draws a predetermined amount of electric wire to secure a crossover portion. The crossover processing unit 19 is a crossover avoiding mechanism, and moves the crossover portion of the electric wire to a predetermined position. The coil holding unit 20 is a winding fixed holding mechanism, and holds and holds the coil winding 43. The bobbin operating unit 21 is a bobbin pull-out mechanism, and
Pull out the coil bobbin 41 inserted in the
insert. The bobbin fixing unit 22 is a bobbin rotation restricting mechanism, and fixes and holds the coil bobbin 41. Prop 2
Reference numeral 3 operatively supports the shaping unit 14, the wire guide unit 15, the cutting unit 16, and the like. The table unit 24 is an iron core rotating mechanism, and rotates and moves the iron core receiving unit 13 to a predetermined position.

An example of a manufacturing process by the stator manufacturing apparatus according to the present embodiment will be described. A plurality of coil bobbins 41 are inserted in the stator core 3 to be used in advance. 1) The iron core receiving unit 13 fixedly supports the stator iron core 3. The bobbin operating unit 21 pulls out the coil bobbin 41 from the iron core 3, the bobbin fixing unit 21 holds and holds the coil bobbin 41, and the flyer head 12 winds the electric wire around the pulled out coil bobbin 41. 2) When the winding operation on the coil bobbin 41 is completed, the coil pressing unit 20 descends from above the iron core 3 to fix the wound coil winding 43, and the lead puller 18 operating from behind the iron core 3. Pulls out the wire by a predetermined amount and secures the crossover part. The electric wire guide unit 15 operated from the side surface of the iron core 3 guides and inserts the electric wire into the slit 41 provided in the coil bobbin 41. 3) The shaping unit 14 that operates from the side surface of the iron core 3 shapes and eliminates the bulge of the side surface generated in the wound coil winding 42. 4) The bobbin operation unit 21 inserts the wound coil bobbin 41 into the iron core 3. 5) The iron core receiving unit 1 is formed by the table unit 24.
3 rotates by a predetermined angle, and the winding operation of the coil bobbin 41 inserted in the next slot starts. 6) When the winding operation is completed, the cutting unit 16 operates in the middle of the electric wire pulled out by the lead puller 18 to cut the electric wire to form the winding lead portion 44. And
Perform the winding operation for the next phase.

Next, at the center of the stator manufacturing apparatus 1 of the present embodiment, the bobbin 41 being wound and the bobbin fixing unit 2 are being wound.
2 will be described in detail with reference to FIGS. At the time of winding, the coil bobbin 41a is pulled out from the iron core 3, and the electric wire is wound outside the slit of the iron core 3. At the time of winding, the core 3 and the drawn-out bobbin 41a operate integrally with the operation of the table unit 24. At this time, by arbitrarily specifying parameters such as the wire diameter and the number of windings, a winding operation with improved alignment can be performed. After the winding, the coil bobbin 41b wound by the bobbin operation unit 21 fixing the coil bobbin 41
Is returned to. In addition, the flyer head 12 which is a supply part of the electric wire is provided with a roller 27 for correcting a bend which the electric wire has from the material stage.

The operation of the shaping unit 14 will be described with reference to FIG. The shaping unit 14 includes the coil bobbin 4
In order to eliminate the swelling of the electric wire caused by the spring back of the coil winding 43 wound around 1, the coil winding 43 is pressed and shaped from outside. Shaping unit 14
Since the contact is made in direct contact with the coil winding 43, a resin is used as a material of the contact portion, thereby preventing the coil winding 43 from being damaged.

The processing operation mechanism of the crossover after being wound around the coil bobbin 41 will be described with reference to FIGS.
The lead puller 18 operating from the rear of the iron core receiving unit 13 pulls out a predetermined amount of the electric wire connected to the flyer head 12 from the coil bobbin 41b that has been wound,
Secure the crossover. At this time, the coil pressing unit 20 operating from the upper part of the coil bobbin 41b presses the coil 41b to prevent the coil winding from loosening when the lead puller 18 operates. When the electric wire is pulled out by the lead puller 18, by inserting the electric wire into the slit 42 of the coil bobbin, the loosening of the coil winding can be prevented. FIG. 8 shows an example of the coil bobbin 41 provided with the slit 42. The beginning and end of the coil winding are inserted into the same slit 42 to become a lead wire 44 or a crossover.

With reference to FIG. 9, description will be given of an operation for preventing interference of the crossover portion with respect to the rotation of the flyer when winding the next slot after processing the crossover portion.
This operation is performed by the connecting wire processing unit 19 from the upper part of the iron core 3 into the storage space provided inside the iron core receiving unit 13.
Is lowered to accommodate the crossover. Thus, the crossover portion can wind the electric wire without interfering with the rotation of the flyer. Thereby, it is possible to continuously wind the coil bobbin 41 of each slot without cutting the crossover portion.

FIG. 10 shows the tooth-shaped stator wound with the coil in this manner. In the stator manufactured according to the present embodiment, since the connecting wire portions 45 are continuous, the lead wire portion 44 and the connecting wire portions 45 on the stator iron core tooth portion 31 are each six,
There are nine.

FIG. 11 shows a state where the annular portion 32 is assembled to the stator core teeth. After the winding of all phases is completed, there are four lead wires including the lead wire 44 formed by binding one lead wire at one place.

As described above, according to the stator manufacturing apparatus of this embodiment, the number of coil winding steps of each phase and the number of coil connection steps between slots can be reduced. The obtained stator has a structure in which the stator core is divided into a plurality of tooth portions and a core back portion forming an outer peripheral portion, and the tooth portions are formed by punching and laminating a material taken out from the belt-shaped hoop material. be able to. Further, a bobbin made of an insulating material in which a coil is intensively and continuously wound is inserted into a tooth portion, and the outer periphery of the tooth portion is assembled with a core back in a stator core winding step. , Rotation, winding flyer and bobbin restraining jig, bobbin insertion / removal, winding coil shaping, etc. can be automated.

[0031]

According to the present invention, the swelling of the side surface of the coil in the stator core having a high space factor is reduced, the alignment is improved, and the tooth shape is fixed with less coil connection between slots and the manufacturing process. And a device for manufacturing the same.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a stator manufacturing apparatus according to an embodiment.

FIG. 2 is an explanatory view of a bobbin winding state in the stator manufacturing apparatus according to the embodiment.

FIG. 3 is an explanatory diagram of housing of a stator iron core portion of a bobbin in the stator manufacturing apparatus according to the embodiment.

FIG. 4 is an explanatory diagram of coil shaping in the stator manufacturing apparatus according to the embodiment.

FIG. 5 is an explanatory diagram of a crossover process in the stator manufacturing apparatus according to the embodiment.

FIG. 6 is an explanatory diagram of a crossover process after winding in the stator manufacturing apparatus of the embodiment.

FIG. 7 is an explanatory diagram of an operation of a guide mechanism in the stator manufacturing apparatus according to the embodiment.

FIG. 8 is an explanatory diagram of the shape of a bobbin used in the stator manufacturing apparatus according to the embodiment.

FIG. 9 is an explanatory diagram of an operation of a unit for storing a crossover in the stator manufacturing apparatus according to the embodiment.

FIG. 10 is an explanatory diagram of a stator core and a coil manufactured by the stator manufacturing apparatus according to the embodiment.

FIG. 11 is an explanatory diagram of a stator manufactured by the stator manufacturing apparatus according to the embodiment.

DESCRIPTION OF SYMBOLS 1 Alignment winding device 11 Winding head unit 12 Flyer head unit 13 Iron core receiving unit 14 Coil shaping unit 15 Electric wire guide unit 16 Electric wire cutting unit 17 Lead puller operation unit 18 Lead puller 19 Crossover processing unit 20 Coil holding unit Reference Signs List 21 bobbin operation unit 22 bobbin fixing unit 23 support 24 table unit 25 flyer head 26 fixing jig 27 roller 3 stator iron core 31 stator iron core tooth part 32 stator iron core ring part 33 stator 4 coil 41 coil bobbin 42 bobbin slit 43 Coil winding 44 Winding lead 45 Winding crossover

Continued on the front page (72) Inventor Takashi Watanabe 7-1-1 Higashi Narashino, Narashino City, Chiba Prefecture F-term in the Industrial Machinery Division, Hitachi, Ltd. 5H604 AA08 BB14 CC01 CC05 CC13 PB03 5H615 AA01 BB14 PP01 PP10 PP13 PP15 QQ02 QQ19 QQ26 QQ27 RR01 SS03 SS04 SS09 SS10

Claims (13)

[Claims] 1. A stator manufacturing apparatus for manufacturing a stator by continuously winding electric wires around a plurality of coil bobbins inserted into a tooth-shaped stator core by a flyer method, wherein a bobbin extracting mechanism for extracting a coil bobbin to be wound is provided. A stator manufacturing apparatus, comprising: 2. The stator manufacturing apparatus according to claim 1, further comprising an iron core fixing support mechanism for fixing and supporting the stator core. 3. The stator manufacturing apparatus according to claim 1, further comprising a bobbin rotation restricting mechanism for restricting rotation of the coil bobbin when winding an electric wire around the coil bobbin. . 4. The stator manufacturing apparatus according to claim 1, further comprising: a roller for correcting a bending of the electric wire, provided at a tip of an arm for supplying the electric wire. apparatus. 5. The stator manufacturing apparatus according to claim 1, further comprising a key-shaped jig for extracting a crossover portion of the electric wire. 6. The stator manufacturing apparatus according to claim 5, further comprising a winding fixing and holding mechanism for fixing and holding the coil winding. 7. The stator manufacturing apparatus according to claim 5, further comprising a slit insertion mechanism for inserting the electric wire into a slit of the coil bobbin at the start of winding of the electric wire and at the end of winding. Child manufacturing equipment. 8. The stator manufacturing apparatus according to claim 1, further comprising a crossover avoiding mechanism for avoiding a crossover portion of the electric wire. 9. The stator manufacturing apparatus according to claim 8, further comprising an iron core fixing jig having a space for avoiding a crossover portion to be avoided. 10. The stator manufacturing apparatus according to claim 1, further comprising a winding forming member configured to press and shape a coil winding from a side surface. 11. The stator manufacturing apparatus according to claim 1, further comprising an iron core rotating mechanism for rotating a stator iron core into which a coil is inserted by a predetermined angle. manufacturing device. 12. The stator manufacturing apparatus according to any one of claims 1 to 11, further comprising an electric wire cutting mechanism for cutting an electric wire drawn after continuous winding into a predetermined length. Stator manufacturing equipment. 13. A stator comprising a stator core, a stator coil comprising a coil winding and a coil bobbin, and the like, wherein the coil bobbin has a slit for inserting a beginning and an end of the coil winding. Features stator.