JP2592368B2 - Laminated mold device for laminated iron core for motor stator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated mold for a laminated iron core for a stator of a motor, comprising laminated magnetic pole core members separated and laminated, and a laminated yoke core member to which the laminated magnetic pole core members are mounted. .

[0002]

2. Description of the Related Art Conventionally, a stator core of an electric motor is formed by laminating and stacking a plurality of stator core pieces obtained by press-forming a large number of inner magnetic poles and crimping projections. Therefore, winding becomes difficult, and automation of the winding operation is also difficult. Therefore, the applicant of the present application has previously published
As shown in JP-A No. 12378, the stator core is separated into an outer laminated yoke core member and a laminated magnetic pole member mounted on the laminated yoke core member and divided for each magnetic pole, so that winding can be automated. A method for manufacturing the stator of the rotating electric machine was proposed.

[0003]

However, in the stator of the rotating electric machine proposed in the above-mentioned Japanese Patent Publication No. 57-12378, since the inner laminated magnetic pole members are all scattered, the laminated magnetic pole members are moved to a predetermined position. However, there is a problem that a jig is required to hold the coil, the coil mounting device is complicated, and the manufacturing process is also complicated. Therefore, the present applicant first forms a magnetic pole core piece in which gaps between adjacent magnetic pole core pieces are partially connected, and transposes and superposes them to form a connected magnetic pole core portion in which each magnetic pole is connected to each magnetic pole piece. Was provided above and below the divided main magnetic pole part to form an integrated laminated magnetic pole core member, which was provided inside the laminated yoke core member. Since the transposition polymerization is performed when forming the, it is difficult to position the upper punch and the rotating lower die,
There is a problem that a positioning pin is required, equipment cost is increased, and an accident such as occurrence of burrs on a product or breakage of a punch is likely to occur. Further, even if the electromagnetic steel sheet used is manufactured according to the standard, there is a deviation in the thickness. Therefore, when the sheet-like electromagnetic steel sheets are sequentially pressed and laminated as they are, the laminated iron core also has a height of 1 to 3%. In some cases, the mounting groove of the laminated yoke core member is inclined, and there is a problem in that the laminated magnetic pole core member is difficult to be mounted. The present invention has been made in view of the above circumstances, without requiring a special jig, each magnetic pole of the laminated magnetic pole core member is held at a predetermined interval, furthermore, winding and pressing work is easy, furthermore The laminated metal of the laminated iron core for the stator of the electric motor can obtain a laminated yoke core member having a substantially uniform height and an extremely small inclination of the mounting groove even when using an electromagnetic steel sheet having a large deviation in thickness depending on the place. It is intended to provide a mold device.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The laminated die apparatus of the laminated iron core for the stator of the electric motor includes a laminated magnetic pole core member in which the magnetic poles are arranged radially inward, and a laminated yoke core member holding the laminated magnetic pole core member. The member is composed of a main magnetic pole section in which main magnetic pole pieces in which circumferentially arranged magnetic poles are completely separated are stacked, and a main magnetic pole section stacked above and below the main magnetic pole section and adjacent to a part of the circumferentially arranged magnetic poles. The gap separating the matching magnetic poles is evenly formed,
A laminated mold device for a laminated iron core for a stator of an electric motor, comprising: a connected magnetic pole core portion in which first and second magnetic pole core pieces having different gap formation positions are stacked, wherein the main magnetic pole piece is provided in advance. A slide cam plate that includes a predetermined square hole punch and a die so as to form a square hole in a main portion of a region corresponding to a gap between the slide cam plates and that operates the square hole punch intermittently; Square hole forming means including an actuating drive unit, and an equal array on the outer periphery of a ring-shaped punch forming a gap between each magnetic pole of the laminated magnetic core member and a rotor formed inside thereof. A first air gap forming punch having a projection forming a gap formed in the first magnetic pole piece, a die thereof, and a slide cam plate intermittently operating the first air gap forming punch A first magnetic pole core forming means having a driving unit for operating the slide cam plate, and a gap between each magnetic pole of the laminated magnetic pole core member and a rotor formed inside the magnetic pole. A second air gap forming punch having projections forming a gap formed in the second magnetic pole piece, which are equally arranged on an outer periphery of a ring-shaped punch to be formed, and a die thereof; A second magnetic pole core forming means including a slide cam plate for intermittently operating a punch, a driving unit for operating the slide cam plate, the first magnetic pole iron piece, and the second magnetic pole core piece; A first pole piece, a second pole piece, a punch, a die, and a caulking press mechanism provided with a divided projection on an outer periphery so as to punch out the main pole piece; Pieces of said main magnet Laminate assembling means for assembling the laminated magnetic pole core member by sequentially punching and fixing the iron core piece, the first magnetic pole iron piece, and the second magnetic pole core piece, and a punch and a die for sequentially laminating the yoke core pieces. A crimping press mechanism for stacking the yoke core pieces and a rolling mechanism for eliminating plate thickness deviation; and a rolling product assembling means for punching and stacking the yoke core pieces to form the laminated yoke core member. , The laminated magnetic core member,
The laminated yoke core member is divided and assembled in a mold.

[0005]

According to the first aspect of the present invention, there is provided a laminated die apparatus for a laminated iron core for a stator of an electric motor, wherein a predetermined rectangular hole punch is formed so as to form a rectangular hole in a main portion of a region corresponding to a gap between main magnetic pole core pieces. And a die, and a slide cam plate for intermittently operating the square hole punch, a square hole forming means including a drive unit for operating the slide cam plate, and a laminated magnetic pole core member. A first air having projections which are equally arranged on an outer periphery of a ring-shaped punch forming a gap between a magnetic pole and a rotor formed inside thereof and which form a gap formed in a first magnetic pole piece; Forming a first magnetic pole core including a gap forming punch and a die thereof, a slide cam plate for intermittently operating the first air gap forming punch, and a driving unit for operating the slide cam plate; Means Protrusions that are equally arranged on the outer periphery of a ring-shaped punch that forms a gap between each magnetic pole of the laminated magnetic pole core member and a rotor formed inside thereof, and that form a gap that is formed in the second magnetic pole core piece A second air gap forming punch and a die thereof, a slide cam plate for intermittently operating the second air gap forming punch, and a drive unit for operating the slide cam plate. Since it is provided with the second magnetic pole core forming means, by appropriately combining and operating
Pole core pieces with gaps between them can be formed. Then, by appropriately driving the respective slide cam plates of the square hole forming means, the first magnetic pole core forming means, and the second magnetic pole core forming means, the connecting magnetic poles provided above and below the main magnetic pole portion, respectively. The first and second magnetic pole pieces forming the iron core can be preformed.

The stacking and assembling means includes a punch and a caulking press mechanism having a divided projection on the outer periphery so as to separately punch the first magnetic pole piece, the second magnetic pole piece and the main magnetic pole piece. Therefore, the first magnetic pole core piece and the second magnetic pole core piece are sequentially punched and superimposed to form a stacked magnetic pole core part, and the main magnetic pole part is fixedly connected to the main magnetic pole part. To form a laminated magnetic core member.
Further, since the rolling product assembling means for forming the laminated yoke core member includes a punch and a die for sequentially laminating the yoke core pieces, a caulking pressure mechanism for superimposing the yoke core pieces, and a rolling product mechanism, It is possible to manufacture a laminated yoke core member in which the thickness deviation of the yoke core piece is eliminated and the mounting groove provided inside is also linear.

[0007]

EXAMPLES Next, examples embodying the present invention will be described to provide an understanding of the present invention. Here, FIG. 1 is a schematic process diagram showing a manufacturing process of a laminated iron core for a stator of an electric motor using an apparatus according to an embodiment of the present invention, FIG. 2 is a partial plan view of the same, and FIG. FIG. 4 is a perspective view of a laminated yoke iron core member, FIG. 5 is a plan view of a central portion of the stator showing the assembled state of the laminated iron core of the electric motor, and FIG. 6 is a magnetic pole core forming means. 7 is a main cross-sectional view of the square hole forming means, and FIG. 8 is a main cross-sectional view of the rolling product assembling means.

FIG. 1 shows a process of forming a magnetic pole piece and a yoke core piece having a total of 12 magnetic pole cores formed by press forming from a strip 10 made of a silicon steel plate as an example of a metal strip. (A) In the station, as shown in FIGS. 2 (P) and 7, square holes 13 providing eight gaps between magnetic poles circumferentially arranged by square hole punch 11 and lower die 12 are intermittently formed. It is formed.
Here, 14 is a center hole, 15 is a pilot hole,
Reference numeral 16 denotes a swaging projection.

Thereafter, after the twelve slots 17 are punched out by a slot punch (not shown), they are conveyed to the station (B). In the station (B), as shown in FIG. 2 (Q) and FIG. One air gap forming punch 18 (hereinafter, also referred to as a punch 18) and a lower die 19 form an air gap between the rotor and the stator, and form a gap between magnetic poles by four protrusions. Then, at the station (C), FIG.
As shown in FIG. 6 (R) and FIG. 6, a second air gap forming punch 20 (hereinafter, also referred to as a punch 20) and a lower die 21 are used to remove the air gap between the rotor and the stator and to project the air gap. A gap is formed between the four magnetic poles at a position different from the position of the gap.

As shown in FIG. 7, the station (A) has a slide cam plate 2 slidably moved by an electromagnet 23 which is an example of a drive source, on the back of the square hole punch 11.
The slide cam plate 24 driven by the electromagnet 23 is provided with the base end portion 22 at the rear of the square hole punch 11.
Is fixedly held, the square hole punch 11 is operated to form a predetermined hole in the strip 10, and when the electromagnet 23 is not operated, the electromagnet 23 is constantly urged in the direction A by the spring 25, Slide cam plate 24
The base end portion 22 is fitted into the recess 26 of the square hole so that the square hole punch 11 does not operate. 27 is a square hole punch 1
A spring that constantly urges 1 upward, 28 indicates a punch holder, 29 indicates a strip holder, and a square hole forming means is constituted by a mechanism shown in FIG.

As shown in FIG. 6, a slide cam plate 31 slidably moved by an electromagnet 30 which is an example of a drive source is provided at the back of the punches 18 and 20 of the stations (B) and (C). . The slide cam plate 31 is constantly urged in the C direction by a spring 32, and the slide cam plate 31 has a depression 33,
When the slide cam plate 31 is moved in the direction D by operating the electromagnet 30, the base end 35 of the punch 20 is fitted into the recess 34 so that the punch 20 is not operated. And the base end 3 of the punch 18
The flat portion of the slide cam plate 31 comes into contact with 6, and the punch 18 operates. The electromagnet 3
When the slide cam plate 31 is not operated, the slide cam plate 31 is moved in the direction C by the spring 32, the base end 36 of the punch 18 is fitted into the recess 33, and the slide cam plate 31 is inserted into the base end 35 of the punch 20. When the flat portion abuts, the punch 20 operates and the punch 18 does not operate. By operating the electromagnet 30, either the punch 18 or 20 can be selectively operated. I have. In the figure, reference numeral 37 denotes a punch holder, 38 denotes a strip holder, and the first and second magnetic pole core forming means are constituted by the mechanism shown in FIG.

Thereafter, in the station (D), the outer yoke core piece 40 is formed by the punch 39 (see FIG. 8).
8 and the first and second magnetic pole pieces 42 and 43 and the main magnetic pole piece 44 described below are formed as shown in FIG.
As shown in FIG. The station (E) is an idle station. At the next station (F), the yoke core piece 40 is cut off and pulled into the lower blank die 45. The blank die 45 has a sprocket 4
6 is provided, and is rotated at a predetermined pitch (30 degrees in this embodiment) by a motor-connected chain,
The yoke core piece 40 to be driven is subjected to transposition polymerization. In FIG. 8, reference numeral 47 denotes an ascending and descending pedestal, reference numeral 48 denotes a cylinder for pushing out products, and reference numeral 49 denotes a press bolster. In addition, the first and second magnetic pole iron pieces 42 and 43 and the main magnetic pole iron piece 44
The upper and lower magnetic pole pieces 42 to 44 are fixed when the respective magnetic pole pieces 42 to 44 are drawn into the lower blank die 45 at the station (D).

Therefore, as shown in FIG. 3, when forming the first magnetic pole core piece 42 in which each magnetic pole is separated by four gaps and the three magnetic poles are connected by the connecting portion 51 as shown in FIG. Then, the electromagnet 23 is turned off, and the slide cam plate 24 is moved in the direction A by the spring 25 so that the square hole punch 11 for the square hole in the station (A) is not operated. Then, the electromagnet 30 shown in FIG. 6 is actuated to move the slide cam plate 31 in the direction D, the (B) station air gap elimination punch 18 is actuated, and the (C) station air gap elimination punch is operated. 20 is not operated. This makes the first
The gap between the magnetic pole iron pieces 42 is formed. Here, in the (B) station, a first air gap forming punch 18 having at least four protrusions arranged equally on the outer periphery, a slide cam plate 31 for operating the punch 18 intermittently, and a slide cam. Plate 31
And the electromagnet 30 that operates the first magnetic pole core forming means.

When the second magnetic pole iron piece 43 is formed on the first magnetic pole iron piece 42, the square hole punch 11 of the station (A) and the air gap removing of the station (B) are formed. Then, the slide cam plates 24 and 31 are moved so that the punch 18 does not operate, and the punch 20 of the (C) station is operated, thereby forming a gap between the second magnetic pole pieces 43. The (C)
In the station, a second air gap forming punch 20 having four protrusions at positions different from the protrusion positions provided on the first air gap forming punch 18, and a slide cam plate 31 for operating the punch 20 intermittently.
And an electromagnet 30 for operating the slide cam plate 31 to form a second magnetic pole core forming means.

Further, in the case where the adjacent magnetic poles form the main magnetic pole core piece 44 separated from each other, as shown in FIG.
By operating the slide cam plates 24 and 31, the square hole punch 11 of the station (A) and the punch 18 of the station (B) are driven to form a gap between the main magnetic pole core pieces 44.

As shown in FIG. 3, the order of forming the first and second magnetic pole core pieces 42 and 43 and the main magnetic pole core piece 44 is as follows: first, the first magnetic pole core piece 42 and the second magnetic pole core piece 43 are formed. And a main magnetic pole 53 having a predetermined number of main magnetic pole pieces 44 superimposed and joined,
Of the magnetic pole iron piece 42 and the second magnetic pole iron piece 43 are overlap-bonded to form a connecting magnetic pole core portion 54. These are extracted to the lower blank die 45 by the laminating assembly means arranged at the station (D). The lower connecting magnetic pole core 52, the main magnetic pole 53, and the upper connecting magnetic core 54 are joined together using a caulking projection (not shown) to form an integrated laminated magnetic core member 55. .

At the station (D), the remaining part obtained by punching out the inner magnetic pole piece becomes a yoke core piece 40, which is cut off at the station (F) and pulled into the lower blank die 45 (die). It is. Here, the lower blank die 45 is provided with a rolling mechanism that rotates by one pitch when the removal of one yoke core piece 40 is completed. Laminated yoke iron core member 56
Is formed. As a result, even if metal strips having different thicknesses in the peripheral portion and the central portion are used, the superimposed thickness is averaged, and the mounting groove 57 provided inside becomes linear, as shown in FIG. The outer protrusions 58 of the laminated magnetic pole core member 55 can be smoothly fitted into the upper surface. 5 does not show the coil mounted on the laminated magnetic pole core member 55, and the broken line in FIG. 4 shows the inclination of the mounting groove when the laminated yoke core members are stacked without being transposed.

[0018]

According to the first aspect of the present invention, the laminated die apparatus for a laminated iron core for a stator of an electric motor can be laminated with a laminated yoke core member without a special jig, as is apparent from the above description. Since the magnetic pole core member is separated from each other and each is integrated and assembled, winding work is easy. Further, in assembling the inner laminated magnetic pole core member, the first and second magnetic pole core forming means and the laminated assembling means are used.
Since the first and second pole core pieces having gaps at different positions are formed, and these are combined with the square hole forming means to form the main pole core pieces, and are sequentially laminated, gold The structure of the mold is simplified, and the laminated magnetic core member can be manufactured accurately. In forming the laminated yoke core member, since the yoke core pieces are assembled by rolling and stacking, they have a substantially uniform height even when an electromagnetic steel sheet having a large deviation in thickness is used in some places. In addition, the inclination of the mounting groove formed inside is extremely small.

[Brief description of the drawings]

FIG. 1 is a schematic process diagram showing a manufacturing process of a laminated iron core for a stator of a motor using an apparatus according to one embodiment of the present invention.

FIG. 2 is a partial plan view of the same.

FIG. 3 is a perspective view showing an assembled state of a laminated iron core for a stator of the electric motor.

FIG. 4 is a perspective view of a laminated yoke core member.

FIG. 5 is a plan view of a central portion showing an assembled state of a stator laminated iron core of the electric motor.

FIG. 6 is a main sectional view of a magnetic pole core forming means.

FIG. 7 is a main sectional view of a square hole forming means.

FIG. 8 is a main cross-sectional view of the rolling product assembling means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Strip (metal strip material) 11 Square hole punch 12 Die 13 Square hole 14 Center hole 15 Pilot hole 16 Caulking projection 17 Slot 18 Punch 19 Die 20 Punch 21 Die 22 Base end 23 Electromagnet 24 Slide cam plate 25 Spring 26 Recess 27 Spring 28 Punch Holder 29 Strip Holder 30 Electromagnet 31 Slide Cam Plate 32 Spring 33 Depression 34 Depression 35 Base End 36 Base End 37 Punch Holder 38 Strip Holder 39 Punch 40 Yoke Core Piece 41 Split Line 42 First Magnetic Pole Core Piece 43 Second magnetic pole iron piece 44 Main magnetic pole iron piece 45 Blank die 46 Sprocket 47 Cradle 48 Cylinder 49 Press bolster 50 Rolling assembly means 51 Connecting part 52 Connecting magnetic pole iron part 53 Magnetic pole portion 54 connecting the magnetic pole core 55 laminated pole core member 56 laminated yoke core members 57 mounting groove 58 outer protrusions

Claims (1)

(57) [Claims] 1. A laminated magnetic pole core member in which each magnetic pole faces radially inward and a laminated yoke core member holding the laminated magnetic pole core member, and the laminated magnetic pole core member has circumferentially arranged magnetic poles. A main magnetic pole portion in which completely separated main magnetic pole core pieces are stacked, and a gap which is stacked above and below the main magnetic pole portion and which separates a part of adjacent magnetic poles among the circumferentially arranged magnetic poles, are uniformly formed. And a connecting magnetic core formed by laminating first and second magnetic pole core pieces each having a different gap formation position, wherein the main magnetic pole core is provided in advance. A slide cam plate including a predetermined square hole punch and a die so as to form a square hole in a main portion of a region corresponding to a gap between the pieces, and intermittently operating the square hole punch; and a slide cam plate. Drive to operate And a square hole forming means, which is arranged on the outer periphery of a ring-shaped punch forming a gap between each magnetic pole of the laminated magnetic core member and a rotor formed therein, A first air gap forming punch provided with a projection forming a gap formed in a magnetic pole piece, a die thereof, a slide cam plate for intermittently operating the first air gap forming punch, and the slide cam plate First magnetic pole core forming means having a driving unit for operating a magnetic pole, and a ring-shaped punch forming a gap between each magnetic pole of the laminated magnetic pole core member and a rotor formed inside the magnetic pole core member A second air gap forming punch having projections forming a gap formed in the second magnetic pole piece, and a die therefor, and the second air gap forming punch intermittently arranged Work A second magnetic pole core forming means having a slide cam plate to be driven, and a drive unit for operating the slide cam plate; the first magnetic pole iron piece, the second magnetic pole iron piece, and A punch, a die, and a caulking press mechanism having a divided projection on the outer periphery so as to divide and punch out the main magnetic pole piece; the first magnetic pole piece, the second magnetic pole piece, and a large number of the main magnetic pole pieces; Stacking means for assembling the laminated magnetic pole core member by sequentially punching and fixing the piece, the first magnetic pole iron piece, and the second magnetic pole iron piece, and a punch and a die for sequentially stacking the yoke iron core pieces; A crimping press mechanism for stacking the yoke core pieces and a rolling mechanism for eliminating plate thickness deviation, and a rolling product assembling means for punching and stacking the yoke core pieces to form the laminated yoke core member; The lamination A laminated die apparatus for a laminated iron core for a stator of an electric motor, wherein a pole iron member and the laminated yoke core member are separately assembled in a die.