JPH0318251A - Manufacturing method of stator for rotating machines - Google Patents

Abstract

PURPOSE:To enable initial winding and final winding to be automatized by arranging terminal pins vertically at one end of a core main-body, and by winding the pins with coils for the initial winding and final winding. CONSTITUTION:In a pin hole 5e formed at one end of a core main-body 5, three terminal pins 8 are implanted upright. After that, between the teeth 5a, 5a of the core main-body 5, one terminal pin 8 is wound up with an internal coil 10 for initial winding, and after that, two hollow slots 5b are arranged inside, and on every four slots 5b, the coils 10 are wound up by the specified number of turns. Besides, the adjacent coils 10 are wound up in the directions opposite to each other. When the coils 10 are wound up one after another in this manner and the core main-body 5 is wound by one turn, then finally, a second terminal pin 8 is wound up with the coil 10 for final winding. After that, on the outer periphery of the core main-body 5, a ring body 22 is pressed-in to be fitted. As a result, initial and final end treatment at the time of winding the coils can be automatized, and to the terminal pins, current feeding terminals are connected, and by this method, the leader treatment of the coils can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a stator in a rotating machine having a cylindrical stator, such as an inner rotor type electric motor.

Conventional technology In the stator of a conventional inner rotor type electric motor, a plurality of teeth are formed protruding from the inner peripheral side of a cylindrical stator core, and a plurality of teeth are formed in slots between these teeth by being wound around a mold in advance. The stator was manufactured using the so-called insert method, in which the coils were inserted.

Furthermore, the present applicant previously proposed in Japanese Patent Application Laid-Open No. 58-33945 a stator core consisting of a core body having a plurality of protruding teeth formed on the outer periphery and a ring body fitted to the outer periphery of the core body. It is disclosed that in this stator core, a coil can be directly wound between the teeth on the outer periphery of the core body using a flyer winding method or the like.

Problems to be Solved by the Invention In the conventional insert method, the coil is wound and then shaped, the coil is inserted into the slot through the slit between the tips of the teeth, and after insertion, the parts protruding from both ends of the stator core are shaped. Many processes are required, such as fixing the coil, and then processing the lead wire from the coil, making the manufacturing process complex, low productivity, and extremely difficult to automate the manufacturing process. there were.

In addition, in the method disclosed in Japanese Patent Application Laid-Open No. 58-33945, since the coil is directly wound around the core body, the insertion of the coil and post-processing after insertion can be omitted, dramatically simplifying the manufacturing process. However, it still takes time and effort to process the lead wires from the coil, and this poses a problem in automating it.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a method for manufacturing a stator for a rotating machine, in which a coil can be efficiently provided in a stator core, and the manufacturing process can be automated. shall be.

Means for Solving the Problems In order to achieve the above object, the present invention provides a stator core comprising a core body having a plurality of protruding teeth formed on the outer periphery and a ring body fitted on the outer periphery. , a method for manufacturing a stator for a rotating machine comprising a coil wound between the teeth, the method comprising the steps of: erecting a plurality of terminal pins at one end of the core body; and winding a winding start around one terminal pin. The present invention is characterized by comprising the steps of winding a coil between the teeth, winding the end of the winding around another terminal pin, and fitting a ring body around the outer periphery of the core body.

Further, after winding the coil, it is preferable to insert a wedge member made of an insulating material between the outer periphery of the coil and the protrusion at the tip of the tooth so as to close the opening between the teeth, and further insert a wedge member made of an insulating material between the outer periphery of the coil and the protrusion at the tip of the tooth. Engagement 3 It is preferable to use a wedge member formed with a retaining protrusion.

Preferably, when fitting the ring body to the outer periphery of the core body, the inner or outer periphery of the core body and the ring body is regulated with a jig.

According to the present invention, by setting a terminal pin at one end of the core body and winding the winding start and end of the coil around this, the start end and end end processing can be easily performed when winding the coil. In addition, by connecting a terminal for supplying current to the terminal pin, processing for drawing out the coil can be omitted, and the efficiency of the manufacturing process can be improved and automation can be easily performed.

In addition, the wound coil can be held securely by inserting a wedge member after winding the coil, and by regulating the inner or outer periphery with a jig when fitting the ring body to the core body. These members, which are relatively easily deformed due to their thin walls, can be fitted together without any problem.

4 Example Hereinafter, an example of the present invention will be described based on FIGS. 1 to 13.

In Fig. 1, ■ is an automatic production line for stators, and a conveyor line 2 is arranged so that a large number of holding jigs 3 that hold stators can be moved and positioned at arbitrary positions. The following various working machines are sequentially arranged along this conveyor line 2.

4 is a tray feeder that supplies a tray containing a large number of core bodies 5, and 6 is a tray feeder that feeds a tray containing a large number of core bodies 5;
This is a robot that takes out and sequentially places them on each holding jig 3 on the conveyor line 2.

As shown in FIGS. 2 and 11, the core body 5 has a plurality of protruding teeth 5a (16 teeth in this embodiment) formed on the outer periphery, and a slot 5b is formed between these teeth 5a, 5a. . Further, a protrusion 5c that protrudes to both sides in the circumferential direction is formed at the tip of each tooth 5a, and the protrusion 5C, 5
A slit 1-5d through which the coil winding wire is passed during winding is formed between the two. Further, the protrusions 5c have a wide width T and a narrow width L in the circumferential direction, and are alternately provided on each tooth 5a. Furthermore, one end of the core body 5 has a plurality of pin holes 5e.
is properly formed.

7, as shown in FIG. 3, a plurality of terminal pins 8 (
In this example, it is a terminal pin press-fitting machine that press-fits three pins.
It is designed to cut and press hoop material.

9 is a pair of first winding machines, as shown in FIG.
An inner coil 10 is placed between the teeth 5a of the core body 5.
wind it. At this time, the coil 10 is first wound around the first terminal pin 8, and then two empty slots 5b are provided inside, and the coil 10 is wound every four slots 5b.
is wound a predetermined number of times. Further, adjacent coils 10 are wound in opposite directions. In this way, the coil 10 is wound one turn around the core body 5, and finally the end of the coil 10 is wound around the second terminal pin 8.

Reference numeral 11 designates a first wedge insertion machine, which inserts a wedge member 12 made of an insulating material into each slot 1, 5b around which a coil 10 is wound, as shown in FIG. As shown in FIGS. 12(a) and 12(b), this wedge member 12 is provided with retaining protrusions 13 cut and raised at both ends so as to engage with both end surfaces of the teeth 5a during insertion. ing.

14 is a pair of second winding machines, and as shown in FIG.
Wind 5. At the beginning of winding the coil 15, the end of the winding of the coil 10 is wound around the second terminal pin 8, and then, like the coil 10, two empty slots 5 are inserted inside.
b, and the coil 10 is wound a predetermined number of times for each of the four slots 5b. Further, the coil 15 is wound so as to be arranged in a staggered manner in the circumferential direction with the coil 10, and finally the coil 1
Wrap the end of No. 5 around the third terminal pin 8. still,
As shown in FIG. 11, the protrusion 5c at the tip of the tooth 5a
By providing alternating wide and narrow widths,
By winding the coils 10 and 15 so that the coil 7 coil winding is closer to the wide protrusion side, the coil winding is difficult to come out from the slit 5d.
The space factor can be increased.

16 is a second wedge insertion machine, and as shown in FIG. 7, a wedge member 17 having a retaining protrusion 18 similar to the wedge member 12 made of an insulating material in each slot 1 and 5b around which the coil 15 is wound. Insert.

19 denotes each terminal pin 8 and the coil 1 wound around it.
This is a soldering machine that solders the winding start and winding end of wires 0 and 15 as shown in Fig. 8.The core body 5 is taken out from the holding jig 3, and flux is applied while conveying it, and soldering is performed using a dip method. The holding jig 3 is then returned to the holding jig 3.

Reference numeral 20 denotes an inspection machine that inspects the electrical continuity between the terminal pin 8 and the coils IO and 15.

Reference numeral 21 denotes a ring body pressure manipulator, and as shown in FIG. 9, a ring body 22 is compressed and fitted around the outer periphery of the core body 5. The inner periphery of this ring body 22 is provided with a slit l-5 of the core body 5.
A protruding strip 23 is provided to fit into the portion d. Moreover, in this ring body press-fitting machine 21,
As shown in FIG. 13, the ring body 22 is installed and supported on the support base 24, and a ring body regulation jig 25 is fitted to the inner circumference of the ring body 22 to accurately regulate the inner circumferential surface. This ring body regulating jig 25 is retractably disposed on the support base 24. On the other hand, the core body 5 is fitted onto the outer periphery of a core body regulating jig 27 provided at the upper end of a shaft body 26 that passes through the axial center position of the ring body regulating jig 25 so as to be relatively movable and is supported so as to be descendable. The shape is precisely regulated and maintained. Then, a press-fitting jig 28 is engaged with the upper surface of the outer peripheral edge of the core body 5, and this press-fitting jig 28 is operated by a cylinder device (not shown).
By being pushed down, the core body 5 and the ring body 22 are smoothly press-fitted with their respective shapes accurately regulated.

By going through the above steps, the stator 30 is basically completed as shown in FIG. 10.

After that, a terminal for connecting the wiring to the terminal pin 8 is mounted on the terminal assembly machine 31, and a pair of soldering machines 32 solder the terminal pin 8 and the connection terminal of the terminal, and the inspection machine After the final inspection of pressure resistance, rare, resistance value, etc. is carried out at step 33, the conveyor line 2 is moved to the robot 34.
The completely destroyed stator 30 is taken out and discharged to a tray feeder 35 for taking out.

Effects of the Invention According to the method for manufacturing a stator for a rotating machine of the present invention, a terminal pin is erected at one end of the core body and the start and end of the coil are wound around this, thereby making it possible to process the start end of the coil when winding. By connecting the ξ terminal for current supply to the terminal pin, the coil lead wire processing, which was conventionally time-consuming and a problem when automating, can be omitted. Therefore, it is possible to easily improve the efficiency and automate the manufacturing process.

In addition, when the wedge member is inserted after winding the coil, the coil can be held securely, and by providing the wedge member with retaining protrusions that engage with both end surfaces of the teeth,
Just by inserting the wedge member, it can be held securely.

In addition, by regulating the inner or outer periphery of the ring body with a jig when fitting the ring body to the core body, it is possible to fit these members, which are relatively easily deformed due to their thin walls, without any problem. This is effective in automating the mating process.

[Brief explanation of drawings]

Figures 1 to 13 show one embodiment of the present invention, Figure 1 is an overall layout configuration diagram of the production line, Figures 2 to 9 are perspective views showing each process of the production line, and Figure 10. 11 is a perspective view showing the state after the ring body is fitted, FIG. 11 is a plan view illustrating the winding state of the coil around the core body, and FIG. 12 shows the insulating wedge member. is a plan view, the same figure (
b) is a perspective view, and FIG. 13 is a longitudinal cross-sectional view of the step of fitting the ring body to the core body. 1...Automatic production line, 5...Core body, 5a...Teeth, 5b...Slot, 5c...Protrusion 5d. ...Slit, 5e...Pin hole, 7...Terminal pin press-fitting machine, 8...Terminal pin, 9, 14...゛...
・Volume 11 Wire machine, 10, 15... Coil, 11, 16...
... Wedge insertion machine, 12, 17 ... Wedge member, 13, 18 ... Retention protrusion, 21
・・・・・・Ring body pressure person 4M! , 22...Ring body, 25...Ring body regulation jig, 27...
... Core body regulation jig, 30 ... Stator. 12

Claims (4)

[Claims] (1) For a rotating machine equipped with a stator core consisting of a core body with a plurality of teeth protruding from the outer periphery and a ring body fitted on the outer periphery, and a coil wound between the teeth. A method for manufacturing a stator, which includes the steps of setting up a plurality of terminal pins on one end of a core body, winding the coil at the beginning of winding around one terminal pin, winding the coil between the teeth, and winding the coil at the end of winding around another terminal pin. 1. A method for manufacturing a stator for a rotating machine, comprising the steps of: winding the stator around the core body; and fitting a ring body around the outer periphery of the core body. (2) After winding the coil, a wedge member made of an insulating material is inserted between the outer periphery of the coil and the protrusion at the tip of the teeth so as to close the opening between the teeth. Manufacturing method of stator for use. (3) The method for manufacturing a stator for a rotating machine according to claim 2, wherein the wedge member is provided with retaining protrusions that engage with both end surfaces of the teeth. (4) The method for manufacturing a stator for a rotating machine according to claim 1, characterized in that the ring body is fitted to the outer periphery of the core body by regulating the inner or outer periphery of the core body and the ring body with a jig. .