KR102129015B1 - Manufacturing method of coil for motor - Google Patents

Abstract

The present invention relates to a method of manufacturing a coil of a motor, and more particularly, to a method of manufacturing a coil of a motor capable of preventing damage to a coating coating that may degrade electrical insulation properties. Manufacturing the core by dividing it into an upper core and a lower core; (B) forming a coil wound with a plurality of turns on the stator core, and forming a spaced apart space between any first and second turns; (C) coating and drying the coils formed to be spaced apart from each other; And (D) the upper and lower cores are disposed on the upper and lower portions of the coated coil, respectively, and compressing and assembling the coils by pressing the upper and lower cores.

Description

Manufacturing method of coil for motor{MANUFACTURING METHOD OF COIL FOR MOTOR}

The present invention relates to a method of manufacturing a coil of a motor, and more particularly, to a method of manufacturing a coil of a motor capable of preventing damage to a coating coating that may degrade electrical insulation properties.

In general, a motor is a device that converts electrical energy into mechanical energy to obtain a rotational force, and is widely used in industrial appliances as well as household electronic products. For example, a household electronic product is a refrigerant in a cooling device such as an air conditioner or a refrigerator. It is widely used in compressors, washing machines, vacuum cleaners, optical disc players, and hard disk drivers of computers provided for reduction.

Such a motor is fixed to a housing or a casing, and a stator in which a coil is wound so as to form a rotating magnetic field by application of power, and a rotor that is rotatably installed by a shaft with an air gap inside the stator. It includes an electron, and when power is applied to the coil, a magnetic field is generated in a direction perpendicular to the shaft, thereby rotating the magnetic flux in the form of a stator, and this rotating magnetic flux crosses the rotor through the air gap to induce a current. The induced current, along with the magnetic flux, generates torque in the rotor according to Fleming's left-hand law, so that the shaft rotates with the rotor.

1 is a view showing a coil manufacturing method of a motor according to the prior art.

As shown in FIG. 1A, the stator core 110 is prepared by dividing the stator core 110 into an upper core 112 and a lower core 114 by using a compression molding machine, and as shown in FIG. 1B, the coil 130 is manufactured. The metal material 120 to be prepared is prepared in a plate shape, and the surface of the plate-shaped metal material 120 is coated so that an insulating coating 122 is formed as shown in FIG. 1C.

After the insulating coating 122 is coated on the surface of the plate-shaped metal material 120, as shown in FIG. 1D, the coil 130 is formed in a rectangular shape using a coil forming machine, and the divided upper core ( 112) and the lower core 114 and each wire coil, the coil 130 is wound stator core 100 is formed.

However, since the stator core according to the prior art is coated with a plate-shaped metal material to form an insulating film when forming a coil, and then formed of a square coil, film damage occurs at a corner portion when forming a square coil, thereby preventing coil insulation. A problem could occur, and thus there was a problem in that recoating on the formed coil was necessary to prevent film damage.

Prior Art Document 1: Japanese Patent Application No. 2010-80886 (2010.04.08) Prior Art Document 2: Japanese Patent Publication No. 2004-312889 (2004.11.04)

The present invention is to solve the above-mentioned prior art, when forming a coil wound on the outer circumferential surface of the stator core, by forming and coating to be spaced apart from any first and second turns of the coil to be wound each other , It provides a method for manufacturing a coil of a motor that can prevent the insulating film of the coil from being damaged.

In addition, it is provided to form a coil of a motor that can be formed to be spaced apart from each other between the first and second turns of the coil to be wound, and one coating is performed, thereby reducing the cost of using a coating film. .

In order to achieve this object, the present invention comprises the steps of (A) producing a stator core divided into an upper core and a lower core; (B) forming a coil wound on the stator core by a plurality of turns, and forming a space between the first and second turns spaced apart from each other; (C) coating and drying the coils formed to be spaced apart from each other; And (D) the upper and lower cores are disposed on the upper and lower portions of the coated coil, respectively, and compressing and assembling the coils by pressing the upper and lower cores.

In addition, in the present invention, the first turn and the second turn is characterized by having a gap of 2㎜ to 4㎜.

In addition, in the present invention, in the step (C), characterized in that when drying the coated coil, the coated coil is dried to face the horizontal axis direction.

Further, in the present invention, the coil is characterized in that it is a rectangular coil.

Further, in the present invention, in step (A), the upper core and the lower core include: a flange; And a winding part extending in a vertical direction from the center of the flange and winding the winding coil.

According to the coil manufacturing method of the motor of the present invention, when forming a coil wound on the outer circumferential surface of the stator core, the coil is formed by forming and coating to be spaced apart from any first and second turns of the coil being wound. It is possible to provide a method for manufacturing a coil of a motor that can prevent the coating film from being damaged.

In addition, to form a spaced apart between any first and second turns of the coil to be wound, and one coating is performed, it is possible to provide a method for manufacturing a coil of a motor that can reduce cost by reducing the amount of coating film used. You can.

1A to 1D are process diagrams showing a conventional coil manufacturing process of a motor;
Figure 2 is a flow chart schematically showing the coil manufacturing process of the motor according to an embodiment of the present invention; And
3A to 3F are process diagrams sequentially showing a coil manufacturing process of a motor according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete and that the spirit of the present invention is sufficiently conveyed to those skilled in the art. Throughout the specification, the same reference numbers indicate the same components.

Figure 2 shows a flow chart schematically showing the coil manufacturing process of the motor according to the present invention.

The coil manufacturing process of the motor according to the present invention may be performed through the following steps.

First, a stator core is divided into an upper core and a lower core using a compression molding machine (S210), and a coil is formed using a coil molding machine to form a coil wound in a plurality of turns in a line shape, but is provided with an arbitrary first turn. The two turns are formed to be spaced apart from each other (S220), and an insulating coating is coated on the surface of the coils formed to be spaced apart from each other in an impregnated form.

Thereafter, the coated film is evenly coated on the surface of the coil, and the coated coil is dried to face the horizontal axis direction (S230), and when the drying of the coil is completed, the upper and lower cores are respectively disposed on the upper and lower parts of the coil, The upper and lower cores are pressed to compress the coils to the winding parts of the upper and lower cores (S240).

Accordingly, the stator core in which the coil is wound can be manufactured according to the features of the present invention.

3A to 3F show a process diagram sequentially showing a coil manufacturing process of a motor according to the present invention.

As shown in FIG. 3A, the stator core 310 is divided into an upper core 312 and a lower core 314.

Here, the upper core 312 and the lower core 314 may be formed of a soft magnetic powder, and the soft magnetic powder is a magnetic powder when electricity is applied, and iron-based soft magnetic particles are generally used. It can be based and a soft magnetic core can be produced using these soft magnetic powders.

The soft magnetic powder may be prepared and prepared to be suitably used as a core material by performing mechanical processing and heat treatment, and an insulating coating may be performed by adding a mixed ceramic to the prepared soft magnetic powder.

The coated soft magnetic powder may be formed by dividing the upper core 312 and the lower core 314 by compression molding using a die of a compression molding machine, and the divided upper core 312 and the lower core 314 may be formed. It may be composed of a flange 316 extending in the horizontal direction, and a winding portion 318 extending in the vertical direction from the center of the flange 316 to wind the coil.

As shown in FIG. 3B, after preparing a metal material 320 to be made of the coil 330 in a plate shape, as shown in FIG. 3C, a coil wound with a plurality of turns on the outer circumferential surface of the stator core 310 ( 330).

Here, the plate-shaped metal material 320 may be formed of a coil 330 by winding around a guide rod (not shown) provided in the coil forming machine, and the shape of the guide rod may be a shape desired by the user, such as an annular shape or a square shape. The coil 330 of the present invention may be formed in a rectangular shape.

In addition, when forming each coil 330 wound with a plurality of turns, when winding each coil 330 on the outer circumferential surface of the guide rod (not shown), between any first turn and the second turns wound next (A) May be formed to be spaced apart from each other, and preferably, the spacing A between any first and second turns is preferably 2 mm to 4 mm.

Next, as illustrated in FIG. 3D, coating and drying are performed on the rectangular coils 330 formed to be spaced apart from each other between the first and second turns.

Here, each wire coil 330 may be impregnated with a coating agent for a predetermined time to form an insulating film 332 on the surface of each wire coil 330, and between the first turn and the second turn of each wire coil 330 (A) Since is formed to be spaced apart from each other, the coating agent can penetrate to the edge portion of each wire coil 330 and form an insulating film 332 on the surface of each wire coil 330 without gaps.

After forming the insulating film 332 on the surface of each wire coil 330, the insulating film 332 coated on the surface of each wire coil 330 is dried with hot air. At this time, the wire coil 330 may be dried after facing the horizontal axis so that the thickness of the insulating coating 332 coated on the surface of the wire coil 330 is uniformly coated.

When drying of the insulating coating coated on the surface of each coil 320 is completed, as shown in FIG. 3E, the upper and lower cores 312 and 314 and the coils 330 are combined.

Here, the upper core 312 and the lower core 314 are disposed on the upper and lower ends of each wire coil 330, and at this time, the one end and the lower core 314 of the winding portion 318 of the upper core 312 are disposed. One end of the winding part 318 may be disposed to face each other.

Thereafter, when the upper core 312 and the lower core 314 are pressed and compressed from the upper and lower portions using a jig, the winding portion 318 of the upper core 312 and the winding portion 318 of the lower core 314 are compressed. ) One end can be coupled, as shown in Figure 3f, each coil 330 is coupled to the outer circumferential surface of the winding portion 318 of the stator core 310, the coil 330 is wound stator core 300 It can be formed.

At this time, each of the first and second turns (A) between each of the coils 330 formed to be spaced apart from each other, the upper and lower cores 312 and 314 by compression when combined with the upper and lower cores 312 and 314 It can be coupled to be wound tightly to the winding portion 318 of.

As described above, according to the method of manufacturing a coil of a motor according to an embodiment of the present invention, when forming a coil wound on the outer circumferential surface of the stator core, mutually between any first and second turns of the coil to be wound After being formed to be spaced apart and coated with an insulating film on the surface of the coil, it is possible to prevent the insulating film of the coil from being damaged compared to the prior art that was formed into a coil after coating the insulating film because the insulating film is coated on the coil without difficulty.

In addition, since it is formed so as to be spaced apart between any first and second turns of the coil to be wound, and the insulating film is coated on the coil without any gaps, it is possible to reduce the cost by reducing the amount of coating agent used.

As described above, although the method of manufacturing the coil of the motor of the present invention has been described, it is apparent to those skilled in the art that modifications, changes, and various modified embodiments are possible without departing from the spirit of the present invention.

310: stator core 312: upper core
314: lower core 316: flange
318: winding part 320: metal material
330: coil 332: insulating film

Claims (5)

(A) producing a stator core by dividing it into an upper core and a lower core;
(B) forming a coil wound by a plurality of turns on the stator core, and forming a spaced apart space between any first and second turns;
(C) coating and drying the coils formed to be spaced apart from each other; And
(D) the upper and lower cores respectively disposed on the upper and lower parts of the coated coil, and compressing and assembling the winding coil by pressing the upper core and the lower core;
Between the first turn and the second turn has a distance of 2㎜ to 4㎜,
In step (C),
When the coated coil is dried, the coated coil is dried to face the horizontal axis,
The coil is a square coil,
The wire coil,
As the first and second turns are spaced apart from each other, a method of manufacturing a coil of a motor in which a coating agent penetrates to a corner portion and an insulating film is formed on the surface without gaps. delete delete delete In step (A) of claim 1,
The upper core and the lower core are:
flange; And
Winding portion that extends in the vertical direction from the center of the flange, the coil is wound; Coil manufacturing method of the motor consisting of.

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