JP2000116074A - Laminating die apparatus of core member and laminating method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability in well-ordered arrangement of core members and in its laminating work. SOLUTION: A laminating die apparatus includes a first punching means for punching blank corresponding to a core member 7 of a first core member 8 and forming the first core member 8, and a second punching means for punching a blank corresponding to a core member 7 of a second core member 9 having an outline with an opposite edge part different in an laminated direction from that of the first core member 8, and forming the second core member 9. The first and second punching means are operated in the same position, so the first and second core members 8 and 9 are laminated alternately in a laminating direction, in such a way that the position between core members 7 of the first core member 8 and a position between the core members 7 of the second core member 9 are dislocated in an elongated direction and the adjoining edge parts of the core members 7 are overlapped in the laminated direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of stacking core members formed by arranging a plurality of plate-shaped core pieces in a strip shape so that the edges of the core pieces overlap with each other, and joining the edges together. The present invention relates to a laminating die apparatus and a laminating method for a core member of an iron core such as an electric motor, which is rotatably connected and formed in an annular shape by rotating a connecting portion.

[0002]

2. Description of the Related Art For example, a conventional electric motor core disclosed in Japanese Patent Application Laid-Open No. 9-191588 is disclosed in FIGS.
As shown in the figure, a predetermined number of magnetic materials 1 having core pieces 1a connected via thin portions 1b are laminated, and in order to improve the winding property, a winding machine 2 (not shown) is used in this state. Then, as shown in FIG. 15, each thin portion 1b is bent to be formed in an annular shape.

[0003] However, in the iron core configured as described above, the surfaces that are abutted when formed into an annular shape, that is, both ends of the core piece 1a and the magnetic material 1 that face each other through the thin portions 1b are provided. Due to the gap generated between the end faces of the core pieces 1a located, the magnetic resistance increases and the magnetic performance of the iron core decreases, and since there is no coating on the punched end faces, the surface of The eddy current generated over the entire area in the laminating direction causes iron loss and degrades magnetic performance, and the abutting surface has low rigidity as an iron core due to a weak holding force against an external force in a direction parallel to the surface. Since it is formed in an annular shape by bending, it is difficult to obtain high precision mechanically, and when it is bent several times, cracks occur in the thin-walled portion 1b, resulting in mechanical strength. Reduced to the, of course, there is a problem such as lowering the high becomes magnetic performance magnetic path resistance by crack.

For this reason, as shown in FIG. 17, for example, a plurality of core pieces 3 punched out by a mold device (not shown) are arranged in a band shape to form a first core member 4 and Core piece 3 similar to that of first core member 4
Are arranged on the first core member 4 in an undesired manner in the longitudinal direction, and the second core member 5 is formed by arranging and arranging them in a belt shape. This operation is sequentially repeated to thereby form the first and second core members 4. It is proposed that the edge portions 3a of the respective core pieces 3 are laminated so as to overlap each other, and the edge portions 3a are rotatably connected to each other by the pin member 6, so that the edge portions 3a overlap each other. As a result, the increase in magnetic resistance and the generation of eddy current are suppressed, and the magnetic performance and rigidity are improved. In addition, the edge portions 3a are rotatably connected to each other by the pin members 6 so as to endure a plurality of bendings. Has been made.

[0005]

As described above, in the conventional core member, the first core member 4 is formed by sequentially arranging a plurality of punched core pieces 3 in a strip shape, and the same core piece is formed. The second core member 5 is formed by arranging the second core member 3 and the first core member 4 sequentially in a strip shape in the longitudinal direction, and the two core members 4 and 5 are connected to each other by the edge portions 3a. Are arranged so as to overlap each other, so that it takes time to align and arrange the core pieces 3 and to perform lamination, and to form an integral core by welding, bonding or insulating bobbins (not shown). However, there is a problem that work such as holding by another member is required, and workability is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a core member laminating mold apparatus and a laminating apparatus capable of improving the alignment and arrangement of the core members and the workability of the laminating operation. It is intended to provide a method.

[0007]

According to the present invention, there is provided a laminated die apparatus for a core member according to the present invention, wherein a contour of a core piece of a first core member is formed by continuously arranging a plurality of plate-shaped core pieces. Forming a first core member by punching out a portion corresponding to
And a contour of a core piece of a second core member formed by continuously arranging a plurality of pieces having different shapes of edges opposed to each other in the laminating direction from the core piece of the first core member. And a second punching means for punching out a portion corresponding to the second core member by operating the first and second punching means at the same position.
Alternately in the stacking direction, the position between the core pieces of the first core member and the position between the core pieces of the second core member are shifted in the longitudinal direction, and are adjacent to each other in the stacking direction of the core pieces. Are laminated so that the edge portions overlap each other.

Further, the core piece of the first core member and the second
The core pieces are punched out in a state where the core pieces of the core member are arranged in a circle.

Also, the core piece of the first core member and the second
The core pieces are punched out in a state where the core pieces of the core member are spirally aligned.

Further, the core piece of the first core member and the second
And a concave / convex portion forming means for forming a concave portion and a convex portion that can be fitted to each other in a region where edges of the core pieces of the core member overlap with each other.

A first core member is formed by punching out a portion corresponding to the contour of the core piece of the first core member in a state where the core pieces of the first core member are arranged in a circle. The process and the core pieces of the second core member in a state where the core pieces of the second core member having different shapes of the edge portions opposed to each other in the stacking direction are different from the core pieces of the first core member. Forming a second core member by punching out a portion corresponding to the outline of the first core member, wherein the first and second core members are alternately arranged in the laminating direction. Interposition and second
The core members are laminated such that the positions between the core pieces are shifted in the longitudinal direction, and the edges adjacent to each other in the laminating direction of the core pieces overlap.

A first step of forming a portion corresponding to an edge of each core piece of the first core member by punching;
A second step of forming a portion corresponding to an edge of a core piece of a second core member having a shape of an edge portion facing in the laminating direction different from each core piece of the first core member by punching; 1
A third step of punching out a portion corresponding to the contour of the rest of each core piece of the core member, and performing the same step as the third step at the contour of the rest of each core piece of the second core member. And a fourth step of forming a corresponding portion by punching, wherein the first and second core members are alternately arranged in the laminating direction, and the position between each core piece of the first core member and the second core member. Lamination is performed such that the positions between the core pieces are shifted in the longitudinal direction, and the edges adjacent to each other in the laminating direction of the core pieces overlap.

The core piece of the first core member and the second
The core pieces are punched out in a state where the core pieces of the core member are arranged in a circle.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a step of forming a core member by a stacking die apparatus for a core member according to Embodiment 1 of the present invention. FIG. 2 is a configuration of a connecting portion of the core member formed through the step shown in FIG. FIG. 3 is a plan view showing a state in which core members formed through the process shown in FIG. 1 are laminated, and FIG. 4 is an edge of each core piece of the core member laminated as shown in FIG. FIG. 5 is a cross-sectional view showing a configuration of a portion, and FIG. 5 is a configuration of an iron core of an electric motor obtained by applying a winding to a core member obtained by a laminated die device for a core member according to Embodiment 1 of the present invention and then forming an annular shape. FIG.

In the figure, reference numeral 7 denotes a plate-shaped core piece made of a magnetic material, and a protrusion 7b as a connecting means is provided on the front and back surfaces of the edge at one end.
And a concave portion 7a are formed, and the end surface 7c is formed in a convex arc shape centered on the center of the convex portion 7b and the concave portion 7a.
A concave arc-shaped end face 7d that can be fitted with c is formed. As shown in FIG. 2, reference numeral 8 denotes a plurality of core pieces 7 having respective end faces 7c, 7
The first core members are continuously arranged with the first core member interposed therebetween.
Reference numeral 9 denotes a second core member in which a plurality of core pieces 7 are continuously arranged via the end faces 7c and 7d. First core member 8
The core piece 7 has a convex portion 7b and a concave portion 7a as connecting means (that is, a connecting mechanism) formed on the front and back surfaces of one end side edge portion, and the core piece 7 of the second core member 9 has the other end side edge surface. A convex portion 7b and a concave portion 7a as connecting means (that is, a connecting mechanism) are formed on the back surface.

As shown in FIGS. 2, 3, and 4, the first core member 8
The second core member 9 and the second core member 9 are alternately laminated, and the positions between the respective core pieces of the first core member 8 (that is, the respective core end faces 7c,
7d) and the position between the respective core pieces of the second core member 8 (ie, the position between the respective core end faces 7c and 7d) is shifted in the longitudinal direction, and the edge portions adjacent to each other in the stacking direction of the respective core pieces. They are stacked so that they overlap each other. Then, at the edges of the core pieces 7 adjacent to each other in the stacking direction, the first core member 8
A protrusion 7b and a recess 7a at one edge of the core piece 7;
The protrusion 7b and the recess 7a on the other end side edge of the core piece 7 of the second core member 9 are fitted so as to be rotatable. 5 denotes windings respectively wound around the magnetic pole teeth 7f (FIG. 3) of each core piece 7, and 11 denotes concave and convex portions 7 of each core piece 7 of the laminated core members 8, 9.
This is an iron core formed in an annular shape by rotating a and 7b.

Next, the operation of the laminated die apparatus for a core member according to the first embodiment of the present invention will be described. First,
At the position indicated by the arrow T in FIG. 1, three convex portions and concave portions that can be press-fitted on the front and back surfaces of the core member are formed by pressing the concave and convex portion forming means (not shown) at three locations for each core piece. You. In this first stage, as shown in FIG. 2, the convex portion 7 b and the concave portion 7 a at the edge of the core piece 7 are formed, and two coupling concave and convex portions of the laminated core are formed at the center of the core piece 7. . At the position indicated by the arrow A, the portion indicated by hatching in the figure is the first stage of processing the first core member 8 at the portion where the uneven portion is formed at the stage indicated by the arrow T as the second stage.
By press punching with a punching means (not shown), the end faces 7c and 7d and the peripheral portions of both end faces 7c and 7d are formed. At the position indicated by arrow B, arrow T
The second core member 9
In the second stage of processing, the portions indicated by hatching in the figure are press-punched by second punching means (not shown) to form both end surfaces 7c and 7d and peripheral portions of both end surfaces 7c and 7d.

Next, at the position indicated by arrow C in FIG. 2, at the stage of arrow A, the portion where both end surfaces 7c and 7d are formed by the first punching unit, and at the stage of arrow B, the second punching unit The first and second core members 8 and 9 are formed by alternately press-punching portions formed with both end faces 7c and 7d by hatching in the drawing by first and second punching means. Are formed, and these core members 8 and 9 are sequentially laminated in a mold.

At the position shown by arrow S, arrow T
3 for each core piece at the same position as the uneven portion formed in the step
The through holes at the locations are formed by the press punching operation of the uneven portion forming means. As a result, three through holes 7e into which the protrusions 7b can be fitted are formed in the core piece 7 which is the uppermost layer of the laminated core. At the position indicated by the arrow B, the portion indicated by hatching in the figure is formed by the first punching means as a second stage of processing the third core member 91 at the portion where the through hole 3e is formed at the stage of the arrow S. Press punching is performed to form both end surfaces 7c and 7d and peripheral portions of both end surfaces 7c and 7d. At the position indicated by the arrow C, the portion indicated by hatching in the figure at the stage where the both end surfaces 7c and 7d are formed at the stage of the arrow B is press-punched by the first punching means to form the third core member 91. Then, it is laminated in the mold as the uppermost layer of the laminated core.

The concave and convex portions 7a and the convex portions 7b, the through holes 7e and the convex portions 7b which are opposed to each other in the laminating direction of the core pieces 7 in the mold are press-fitted together, and are pressed and caulked.
Are integrated as shown in FIG. The magnetic pole teeth 7f of the core pieces 7 of the laminated core members 8, 9 and 91 are wound with the windings 10 (not shown) in the state shown in FIG. By rotating the projection 7b, the through hole 7e and the projection 7b, the iron core 11 is completed by forming an annular shape as shown in FIG.

As described above, according to the first embodiment, the first punching means corresponds to the contour of each core piece 7 of the first core member 8 formed by arranging the core pieces 7 in a plurality of strips. The first core member 8 is formed by punching out a portion to be formed, and the second punching means is arranged such that each core piece 7 is aligned with the first core member 8 in a longitudinal direction. The operation of punching out a portion corresponding to the contour of each core piece 7 of the core member 9 to form the second core member 9 is performed alternately at the same position, so that the edges of each core piece 7 of both core members 8 and 9 are formed. Since the layers are laminated so that they are overlapped with each other, the operation of sequentially arranging and arranging a large number of core pieces 7 can be performed collectively, and the laminating operation can be performed simultaneously with the formation of both core members 8 and 9. , Work of aligning and laminating the core pieces 7 It is greatly improved.

Further, since crimping can be performed simultaneously with lamination, integration of the core is facilitated and workability is improved. Further, since the core members 8 and 9 are bent to form an annular shape by rotating the fitting portion between the concave portion 7a and the convex portion 7b, a plurality of diffractions can be performed without lowering the mechanical strength. A core member that can be bent and that can improve workability such as winding work can be easily obtained.

Embodiment 2 FIG. FIG. 6 is a plan view showing a configuration of a core member formed and laminated by a stacking die apparatus of a core member according to Embodiment 2 of the present invention, and FIG. 7 shows a part of a process of forming the core member in FIG. FIG. 8 is a plan view showing the next step following the step shown in FIG. 7, and FIG.
10 is a plan view showing the next step following the step shown in FIG. 9, FIG. 10 is a plan view showing the next step following the step shown in FIG. 9, and FIG. 11 is a cross-sectional view showing a section taken along line XX shown in FIG. .

In the drawing, reference numeral 12 denotes a plate-shaped core piece made of a magnetic material, and a concave portion 12a and a convex portion 12b
Is formed, and one end side end surface 12c is formed in an arc shape having a step portion centered on the center of the concave portion 12a and the convex portion 12b, and the other end side end surface 12d is formed on one end side end surface of the adjacent core piece 12. It is formed in a bay shape having a step portion that can be fitted to the arc-shaped portion 12c. 13 is a plurality of core pieces 1
2 are aligned via the respective end faces 12c and 12d.
Of the core member. The first core member 1 serving as the uppermost layer
The third core piece 12 is formed with a hole 12e in which the projection 14b of the core piece 14 of the second core member 15 can be fitted.

Numeral 14 denotes a plate-shaped core piece made of a magnetic material. A concave portion 14a and a convex portion 14b are formed on the front and back surfaces of one end, and an end surface 14c of the one end is centered on the center of the concave portion 14a and the convex portion 14b. The other end surface 14d is formed in a bay shape having a step portion that can be fitted with the arc portion of the one end surface 14c of the adjacent core piece 14. Reference numeral 15 denotes a plurality of core pieces 14 each having an end surface 1.
4c, 14d, the second core members are arranged alternately with the first core member 13, and the concave portions 12a of the core pieces 12, 14 adjacent to each other in the laminating direction as shown in FIG. , 14a and the protrusions 12b, 14b are rotatably connected by fitting.

Next, the operation of the laminated die apparatus for a core member according to the second embodiment of the present invention will be described. First,
At the position indicated by the arrow A in FIG. 7, the pilot hole a, the slit hole b, the swaging hole c, the respective concave and convex portions 12a, 1
4a, 12b, 14b, hole 12e and shaft hole d are sequentially stamped. Next, at a position indicated by an arrow B in FIG. 7, portions indicated by hatching in the figure are sequentially stamped out to form a rotor core (not shown). Next, at the position shown by the arrow C in FIG. 8, a slit having a shape corresponding to the contour of both end surfaces 12c and 12d of the core piece 12 is inserted between the slit holes b.

Next, at the position shown by arrow D in FIG.
Both end faces 14 of the core piece 14 are located between the slit holes b in the area next to the area where the slit is formed at the position of arrow C.
A slit having a shape corresponding to the contour of c and 14d is formed.
Next, at the position indicated by the arrow E in FIG. 9, the contours of the slot holes are formed by sequentially press-punching portions indicated by hatching in the drawing. Next, at the position shown by the arrow F in FIG. 9, the portion shown by hatching in the figure is sequentially stamped out to form the contour on the inner diameter side of the stator.

Finally, at the position shown by the arrow G in FIG. 10, the portions indicated by hatching in the figure are sequentially punched out to form the two core members 13 and 15,
These two core members 13 and 15 are sequentially laminated, and the concave portions 12 a and 14 a opposed to each other in the laminating direction of the core pieces 12 and 14.
And the projections 12b and 14b are fitted together,
It is crimped and integrated into a circle as shown in FIG. The core members 13 and 15 thus laminated and integrated with each other are fitted with the recess 12 (not shown).
a, 14a and the protruding portions 12b, 14b are rotated so as to be wound once in a state of being linearly extended, and then returned to a circular shape and fixed and integrated by, for example, welding, molding, pin swaging, or the like. The iron core is completed.

As described above, according to the second embodiment, the first and second core members 13 and 15 are formed by arranging the plurality of core pieces 12 and 14 in a strip shape and a circular shape, respectively.
The first and second core members 13 and 15 are formed by punching out portions corresponding to the contours of the respective core pieces 12 and 14, and these core members 13 and 15 are connected to the edges of the respective core pieces 12 and 14. Are stacked so as to overlap each other, so that the work of aligning and disposing the core pieces 12 and 14 and laminating the core members 13 and 15 is greatly improved, as in the first embodiment. Needless to say, even if the core members 13 and 15 are extended linearly and wound and then returned to a circular shape again as shown in FIG. Since the core is punched in a circular shape, it is possible to obtain an iron core having a high roundness, and the circular core members 1
Since the rotor core can also be punched at the remaining center portion where punches 3 and 15 are punched, it is possible to improve the yield of material.

Embodiment 3 FIG. 12 is a plan view showing a state of a core member punched and laminated by a lamination die apparatus for a core member according to Embodiment 3 of the present invention, and FIG.
FIG. 14 is a plan view showing a state in which the core member shown in FIG. 2 is developed, with a part thereof cut away, and FIG. 14 is a plan view showing a configuration of an iron core formed by forming the laminated core member in FIG.

The laminating mold apparatus according to the second embodiment is formed by alternately punching and laminating first and second core members 13 and 15 in which a plurality of core pieces 12 and 14 are arranged in a band and in a circle. Although the core member is formed by performing the above operation, the laminated mold device according to the third embodiment has a first and a second arrangement in which a plurality of core pieces 16 are spirally arranged as shown in FIG. Since the core members are formed by alternately punching and laminating the core members 17 and 18, the same effects as in the first and second embodiments can be obtained. The yield can be further improved.

The first and second spirally stacked first and second layers
The core members 17 and 18 are integrated by crimping,
As shown in FIG. 13, the iron core 19 is once linearly extended and wound (not shown), and then formed in an annular shape as shown in FIG. 14 to form the iron core 19.

[0033]

As described above, according to the present invention, a portion corresponding to the contour of the core piece of the first core member formed by continuously arranging a plurality of plate-shaped core pieces is punched out. The first punching means for forming the first core member is different from the core pieces of the first core member in the shape of edges facing each other in the laminating direction, and is formed by continuously arranging a plurality of pieces. Second
And a second punching means for punching a portion corresponding to the contour of the core piece of the core member to form a second core member, and by operating the first and second punching means at the same position, The first and second core members are alternately arranged in the laminating direction, and the position between each core piece of the first core member and the position between each core piece of the second core member are shifted in the longitudinal direction. The lamination is performed so that the edges adjacent to each other in the direction overlap with each other, so that the alignment and arrangement of the core members and the workability of the lamination work can be improved, and the core can be formed by laminating at the same time as the lamination. Can be easily provided.

Further, the core piece of the first core member and the second
Since the core pieces of the core member are punched out in a state where the core pieces are arranged in a circle, it is possible to improve the workability of the alignment and arrangement of the core members and the lamination work, as a matter of course. It is possible to provide a laminated die device for a core member that can obtain a high iron core and can improve the yield of materials.

Further, the core piece of the first core member and the second
Since the core pieces of the core member are punched out in a state where the core pieces are spirally aligned, it is of course possible to improve the alignment of the core members and the workability of the lamination work.
It is possible to provide a laminated die device for a core member capable of further improving the yield of materials.

Further, the core piece of the first core member and the second
Since the core member of the core member is provided with concave / convex portion forming means for forming a concave portion and a convex portion that can be fitted to each other in a region where the edge portions of the core pieces overlap each other, it is possible to obtain a core member in which the connecting portion can be easily rotated. Thus, it is possible to provide a laminated mold device for a core member.

Further, in a state where the core pieces of the first core member are arranged in a circular shape, a portion corresponding to the contour of the core piece of the first core member is punched to form a first core member. The process and the core pieces of the second core member in a state where the core pieces of the second core member having different shapes of the edge portions opposed to each other in the stacking direction are different from the core pieces of the first core member. Forming a second core member by punching out a portion corresponding to the outline of the first core member, wherein the first and second core members are alternately arranged in the laminating direction. Interposition and second
The core members are laminated so that the positions between the core pieces of the core members are shifted in the longitudinal direction, and the edges adjacent to each other in the laminating direction of the core pieces overlap with each other. It is possible to provide a method of laminating a core member in which the core can be easily integrated by making it possible to improve and at the same time, to make the lamination possible at the same time.
Further, it is possible to provide a method of laminating core members capable of manufacturing an iron core having high roundness.

A first step of forming a portion corresponding to an edge of each core piece of the first core member by punching;
A second step of forming a portion corresponding to an edge of a core piece of a second core member having a shape of an edge portion facing in the laminating direction different from each core piece of the first core member by punching; 1
A third step of punching out a portion corresponding to the contour of the rest of each core piece of the core member, and performing the same step as the third step at the contour of the rest of each core piece of the second core member. And a fourth step of forming a corresponding portion by punching, wherein the first and second core members are alternately arranged in the laminating direction, and the position between each core piece of the first core member and the second core member. Since the positions between the core pieces are displaced in the longitudinal direction and the adjacent edges in the laminating direction of the core pieces are laminated so as to overlap with each other, it is intended to improve the alignment and arrangement of the core members and the workability of the lamination work. In addition, it is possible to provide a method for laminating a core member in which the cores can be easily integrated by enabling crimping at the same time as lamination.

The core piece of the first core member and the second
Since the core pieces are punched out in a state where the core pieces of the core member are arranged in a circle, it is possible to provide a core member laminating method capable of manufacturing an iron core having high roundness.

[Brief description of the drawings]

FIG. 1 is a plan view showing a step of forming a core member by a core member stacking die apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a connecting portion of a core member formed through the process shown in FIG.

FIG. 3 is a plan view showing a state in which core members formed through the process shown in FIG. 1 are stacked.

4 is a cross-sectional view showing a configuration of an edge portion of each core piece of a core member stacked as shown in FIG.

FIG. 5 is a plan view showing a configuration of an iron core of an electric motor obtained by applying a winding to a core member obtained by the core member laminating die apparatus according to Embodiment 1 of the present invention and forming the core member in an annular shape.

FIG. 6 is a plan view showing a configuration of a core member formed and stacked by a stacking die apparatus of a core member according to Embodiment 2 of the present invention.

FIG. 7 is a plan view showing a part of a step of forming a core member in FIG. 6;

FIG. 8 is a plan view showing a next step following the step shown in FIG. 7.

FIG. 9 is a plan view showing a next step following the step shown in FIG.

FIG. 10 is a plan view showing a next step following the step shown in FIG.

FIG. 11 is a sectional view showing a section taken along line XX shown in FIG. 6;

FIG. 12 is a plan view showing a state of a core member punched and laminated by a lamination mold of the core member according to Embodiment 3 of the present invention.

FIG. 13 is a plan view showing a state where the core member shown in FIG.

FIG. 14 is a plan view showing a configuration of an iron core formed by forming the laminated core member in FIG. 12 in an annular shape.

FIG. 15 is a plan view showing a configuration of an iron core of a conventional electric motor.

FIG. 16 is a plan view showing a configuration of a core member shown in FIG.

FIG. 17 is a perspective view illustrating a conventional core member laminating method.

[Explanation of symbols]

7, 12, 14, 16 core pieces, 7a, 12a, 14a
Recess, 7b, 12b, 14b Convex, 7c, 7d, 1
2c, 12d, 14c, 14d End face, 7e, 12e
Hole, 8, 13, 17 First core member, 9, 15, 1
8 Second core member, 10 windings, 11, 19 iron core

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuaki Miyake 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Co., Ltd. (72) Inventor Kenichi Higashi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 5H615 AA01 BB14 PP01 PP06 SS03 SS05

Claims (7)

[Claims] 1. A first core member formed by continuously arranging a plurality of plate-shaped core pieces and punching a portion corresponding to the contour of the core piece of the first core member to form the first core member. 1
The punching means and the core pieces of the second core member formed by continuously arranging a plurality of pieces are different from the core pieces of the first core member in the shape of edges facing each other in the laminating direction. A second punching means for punching out a portion corresponding to the contour to form the second core member, wherein the first and second punching means are operated at the same position, whereby the first and second punching means are operated. The positions of the core members of the first core member and the positions of the core members of the second core member are displaced in the longitudinal direction alternately in the stacking direction. A stacking die apparatus for a core member, wherein the adjacent edge portions are stacked so as to overlap each other. 2. The core member according to claim 1, wherein the core piece of the first core member and the core piece of the second core member are punched out in a state where they are arranged in a circular shape. Stacking mold equipment. 3. The core member according to claim 1, wherein the core piece of the first core member and the core piece of the second core member are punched in a state of being spirally aligned. Stacking mold equipment. 4. An uneven portion forming means for forming a concave portion and a convex portion which can be fitted to each other in a region where edges of the core pieces of the first core member and the core pieces of the second core member overlap with each other. 4. The laminated die apparatus for a core member according to claim 1, wherein: 5. A method of forming a first core member by punching out a portion corresponding to the contour of the core piece of the first core member in a state where the core pieces of the first core member are arranged in a circular shape. Step 1 and the second core in a state in which core pieces of a second core member having different shapes of edges facing each other in the stacking direction are different from the core pieces of the first core member. A second step of punching a portion corresponding to the contour of the core piece of the member to form the second core member. The first and second core members are alternately arranged in the laminating direction by the first step. The position between the core pieces of the core member and the position between the core pieces of the second core member are displaced in the longitudinal direction, and the adjacent edge parts in the laminating direction of the core pieces are stacked so as to overlap each other. A method for laminating a core member, comprising: 6. A first step in which a portion corresponding to an edge of each core piece of the first core member is formed by punching, and the shape of the edge facing the stacking direction is different from that of the first core member. A second step of forming a portion corresponding to the edge of the core piece of the second core member different from each core piece by punching, and a portion corresponding to the contour of the remaining portion of each core piece of the first core member. A fourth step of forming a portion corresponding to the contour of the rest of each core piece of the second core member, which is performed at the same position as the third step, by punching; The first and second core members are alternately arranged in the laminating direction, and the position between each core piece of the first core member and the position between each core piece of the second core member are arranged in the longitudinal direction. So that the edges adjacent to each other in the stacking direction of the core pieces overlap with each other. A method for laminating core members, comprising laminating. 7. The core member according to claim 6, wherein the core piece of the first core member and the core piece of the second core member are punched out in a state where they are arranged in a circle. Lamination method.