KR20210155621A - Structure of Prefabricated Divided-Core for Motor or Generator and Method for Manufacturing the same - Google Patents

Abstract

The present invention discloses a prefabricated split core structure for manufacturing a core for a motor or a generator by coupling split cores constituting parts of the core. The present invention provides the prefabricated split core structure, wherein a plurality of core segments formed by dividing each winding part of a circular core unit at equal angles include a first split core and an n^(th) split core, which are horizontal with each other while outer portions of a yoke part are spread so as to be connected to each other, in which the first split core is configured such that one end of a yoke part of a first core segment forms a first coupling groove, and an opposite end of a yoke part of a last core segment forms a first coupling protrusion so as to allow the first split core to be coupled with the n^(th) split core, and the n^(th) split core including a plurality of core segments similarly to the first split core is configured such that one end of a yoke part of a first core segment forms a second coupling groove coupled to the first coupling protrusion, and an opposite end has a second coupling protrusion coupled to the first coupling groove so as to allow the n^(th) split core to be connected with the first split core. According to the present invention, tolerances of geometric specifications such as concentricity, cylindricity, and roundness of the core for the motor or the generator manufactured by coupling the split cores to each other are precisely and stably managed and improved, the motor or the generator is manufactured in a small size and a light weight, quality, performance, and an output are improved, and the manufacture of the core is automated.

Description

Structure of Prefabricated Divided-Core for Motor or Generator and Method for Manufacturing the same

The present invention relates to a prefabricated split core structure, and more specifically, a stator core of a motor or generator that forms a circular core by winding a coil on an unfolded split core and then assembling the core so that the split surfaces abut on the inside. It relates to a prefabricated core and a manufacturing method thereof.

In general, a core is used in a rotating device such as a motor or a generator, and the core is an iron core of a rotor or a stator and has a significant influence on the performance of the motor or generator.

For the manufacture of the core, in recent years, by punching a metal strip such as an electrical steel sheet, a technology of manufacturing a core having a structure in which lamina members are laminated/coupled by a predetermined number, that is, a laminated core, is used, and this method is as shown in FIG. It is disclosed in Patent Registration Nos. 10-0943069 and 10-522534.

For interlayer bonding of the lamina members, interlock tabs are formed to protrude from the metal strip at predetermined intervals, and a counter hole for preventing interlayer bonding of the lamina members for division between stacked cores is formed through the metal strip can be

Looking at the motor core manufacturing process, the silicon steel sheet material supplied in a roll state is automatically transferred, a circular lamina member (an) is formed by the punching molding process, and a certain number of these molded lamina members are laminated to form a core. Then, the coil is wound on each winding part of the core with an insulating piece inserted therein to be manufactured.

In the conventional manufacturing process of such a motor core, the silicon steel sheet material (S) transferred and supplied during the punching forming process is integrally punched at regular intervals as shown in FIG. 1A to obtain a circular lamina member (an). Parts other than the circular lamina member (an) to be punched, that is, unnecessary scrap (S1) part is generated a lot, causing excessive material loss. In addition, since the circular lamina member an integrally punched in this way is laminated by a separate jig (not shown) in the lamination process, workability according to lamination is deteriorated and additional work equipment is required accordingly.

And in recent years, a technique for implementing interlayer bonding of lamina members in an adhesive manner has been proposed. For example, an invention for manufacturing a laminated core by applying an adhesive to the surface of a metal strip supplied to an apparatus (mold) for manufacturing a laminated core and punching the metal strip is disclosed in documents such as Patent Registration No. 10-1566491 The invention of manufacturing a laminated core by punching a metal strip already coated with an adhesive is disclosed in Korean Patent Registration No. 10-1659238 and the like.

On the other hand, the above-described divided core forming a part of the motor or generator core, more specifically, a technique of manufacturing the divided cores forming a part of the rotor core or the stator core and then assembling them to complete the entire core is used, for example, A technology for manufacturing a stator or rotor core by dividing and manufacturing a large core of a certain size or more, and then reassembling them, that is, a technology for manufacturing the divided cores and then assembling them with each other is used.

As a more specific example, a stator core or a rotor core may be manufactured by connecting a plurality of divided cores in the circumferential direction. A technique for winding and assembling a coil by dividing a slot is disclosed, and as shown in FIG. 2b, Patent Publication No. 10-2020-0002715 relates to a split-core motor stator eater, and a plurality of slots and magnetic poles are manufactured in three groups A technique for assembling it is disclosed.

The divided cores may be integrated by welding, or the divided cores may be integrated by assembling the projections and grooves as disclosed in the above-mentioned prior patent documents.

However, in the prior art, the cylindricity / concentricity of the core completed by the assembly of the divided cores cannot be constantly managed, and when the assembly of the divided cores is carried out by the interference fit of the projections/grooves, the assembly process of the divided core is difficult, The cohesion between the divided cores is lowered, and as a result, the quality of the core may be deteriorated, and it is difficult to wind the coil.

In particular, in the coil winding process of winding a coil on a circular core unit 10 in which a plurality of circular lamina members an are stacked, a winder (not shown) to the center of the circular core unit 10 as shown in FIG. As the coil is inserted through the pinching groove (Mg) between each magnetic pole end (Mp) while ascending and descending, the coil is wound around the radially formed tooth (Mt) of each magnetic pole in turn, so the winder blows the coil around the tooth (Mt). ) Inconvenience of the winding operation due to the provision of a space between the pinching fingers to guide the winding in the winding groove around it, and the need to wire the polarity after winding the teeth (Mt) of each pole individually, resulting in a decrease in productivity of the coil winding operation will do In addition, the difficulty of the winding operation makes it difficult to wind the coil in an arrangement on the tooth (Mt) of the magnetic pole. Otherwise, the enamel of the coil surface is damaged, causing a problem that causes deterioration in quality due to poor insulation.

In addition, the conventional divided core method composed of several segments as shown in FIGS. 2A and 2B has the disadvantage of being difficult to assemble, and the divided core as shown in FIG. 2C has the disadvantages of the conventional circular core as it is.

KR 10-0849023 B1 (Registration Date 2008.07.30.) KR 10-0964540 B1 (Registration Date 2010.06.21.) KR 10-1135251 B1 (Registration Date (2012.04.03.) KR 10-2020-0002715 A (published on 2020.01.08.)

The present invention is to solve the above problems, and an object of the present invention is to align the coupling protrusion and the coupling groove formed in the divided core when assembling the unfolded divided core, and press the divided core inward with respect to the center of the stator to assemble the divided core. The purpose of this is to provide a new split-core type motor stator that is easy to connect and assemble the core, thereby shortening the assembly time, improving productivity, and enabling precise assembly.

It is an object of the present invention to provide a method for manufacturing a core for a motor or a generator, in which a core unit is efficiently punched in a punching molding process, thereby minimizing the amount of scrap and thereby reducing the manufacturing cost.

In addition, the present invention effectively performs the winding operation of the coil on the winding portion of the core in which a plurality of core units are stacked, thereby improving the coil winding workability and productivity, as well as aligning the coils with each other to provide uniformly excellent quality. An object of the present invention is to provide a method for manufacturing a motor core.

The above object of the present invention is a punching forming process of forming a core unit by punching while automatically feeding and supplying a silicon steel sheet material supplied in a roll state, a lamination process of forming a core by stacking a certain number of the punched molded core units, , In manufacturing a motor core comprising a coil winding process of winding a coil around the laminated core and a coupling process of assembling the divided surfaces of each winding part in an unfolded state to abut with each other to form a circular core, the The core unit in the punching molding process is punched so that the circular core unit equalizes each winding part, and the divided surfaces are spread horizontally to be connected to each other so that they are crossed to face each other, and each of the stacked cores in the coil winding process It is achieved by winding a plurality of coils at the same time on each winding in a horizontally unfolded state after bonding the insulating piece to the winding.

The present invention provides a core manufacturing method and a core manufacturing system for manufacturing a core for a motor or a generator such as a stator core or a rotor core by assembling a split core, a core manufacturing system, and a core manufacturing material (metal strip) that can reduce loss and increase yield The purpose is to provide a split core.

One aspect of the present invention provides a prefabricated divided core structure for manufacturing the core by combining divided cores forming a part of the core for a motor or generator.

The prefabricated divided core structure consists of a first divided core and an nth divided core in which a plurality of core segments formed by equal angular division of each winding part of the circular core unit are horizontally unfolded in a state in which the outer parts of the yoke part are connected to each other, a first divided core in which one end of the yoke part of the first core segment forms a first coupling groove and the other end of the yoke part of the last core segment forms a first coupling protrusion for coupling with the n-split core; It consists of a plurality of core segments, such as the first divided core, and for connection with the first divided core, one end of the yoke part of the first core segment forms a second coupling groove coupled to the first coupling protrusion, and the other end is the above It consists of; an n-th divided core formed with a second coupling protrusion coupled to the first coupling groove.

And when the first divided core and the n-th divided core are combined, the other end of the yoke portion where the first coupling protrusion is formed so that the outside of the yoke is horizontal is cut inside the arc, and the outside of the arc continues to form a joint piece that opens outward.

The first coupling protrusion and the second coupling groove are fitted in a sliding coupling structure in the front-rear direction to be jointly coupled, and the second coupling protrusion and the first coupling recess have a structure in which they are buttted to each other and assembled in a fitting manner.

The first divided core and the nth divided core are formed by stacking a plurality of first and second lamina members, respectively.

On the outside of the yoke portion to which each core segment of the first divided core and the nth divided core are connected, there is an outer incision groove for easy expansion and assembly.

The arc outer side of the yoke portion where the first coupling protrusion and the second coupling groove to which the first divided core and the nth divided core are coupled, and the second coupling projection and the second coupling groove are in contact with each other are integrated by spot welding.

After the first divided core and the nth divided core are combined to form a circular state core, they are integrated by coupling of auxiliary rings having L-shaped protrusions inward from both sides.

In another aspect of the present invention, in a prefabricated split core structure in which a split core is assembled to form a core for a motor or a generator, a plurality of core segments formed by equal angular division of each winding part of a circular core unit are formed such that the outer part of the yoke part is mutually A core segment unit that is horizontal in a continuous unfolded state; When the core segment unit is formed in a circular shape, the first and last core segments have a first coupling groove and a second coupling protrusion at both ends.

In another aspect of the present invention, in the method for manufacturing a core for a motor or generator using the prefabricated core formed by assembling a divided core, a metal strip is punched to form a first lamina member and an nth lamina member to do; forming a first divided core and an nth divided core by stacking and integrating the first lamina member and the nth lamina member by a predetermined number; slidingly coupling the first coupling protrusion of the first divided core with the second coupling groove of the nth divided core; inserting an insulating bobbin into the teeth of the combined first divided core and the nth divided core from both sides to the inside and combining; winding a coil on the insulated bobbin; forming a horizontal first divided core and an nth divided core in a circular shape using a pneumatic machine; Including a; spot welding or coupling the auxiliary ring to the outside of the circularly formed core.

In the step of forming the first lamina member and the n-th lamina member, the circular lamina member is divided equal to each winding part, and the divided surfaces are horizontally spread out to be connected to each other, and are cross-opposed and punched, or each It is characterized in that it is any one of forming a circular lamina member punched by equal angular division of the winding part so that the divided surfaces are connected to each other horizontally.

The split core; A second assembling protrusion formed on either one side or the other side of the divided core and expandable by compressive force, and a second assembling groove formed on the opposite side of the surface on which the second assembling protrusion is formed and larger than the second assembling protrusion may further include.

The divided core is a core segment corresponding to a size obtained by dividing the core for the motor or generator into N (N≥2) equal parts in the circumferential direction.

In the present invention, the loss of material for core manufacturing can be reduced and the yield can be improved by punching the circular core unit into an unfolded shape by radially equal angular division in the punching molding process of the material to be transferred.

According to the present invention, assembly between the unfolded divided cores is easy, the coupling force between the divided cores is strengthened, and the tolerance of geometric standards such as concentricity, cylindricity, and roundness of a stator core manufactured by combining the divided cores is precise and stable. managed and improved.

In the present invention, since the clamping groove of the magnetic pole end of the circular core unit is spread outward to make it horizontal, it is easy to insert the insulation piece, and the winding space is wide, so the workability of winding the coil in the winding part is convenient, and the coil is quickly installed Since a core that can be wound in an aligned state is provided, a motor or generator core with uniform and excellent quality can be manufactured.

In the present invention, since the coil is directly wound in the forward and reverse directions in each of a plurality of windings forming a plane, there is no need to connect and insulate the coil between the polarities, so automation is possible, and the coil is densely filled in the unfolded winding space. Since it is formed in a circular shape afterward, it is possible to manufacture a small and lightweight core with improved output compared to the conventional circular core unit.

The features and advantages of the present invention may be better understood with reference to the drawings described below in conjunction with the detailed description of the embodiments of the present invention, which of which:
Figure 1 shows a conventional manufacturing process of a motor core, Figure 1a is a process for punching a lamina member, and Figure 1b is a process for winding a coil.
2 is a view showing the shape and coupling structure of a conventional divided core.
3 is a plan view showing the punching molding process of the divided core according to the present invention and a perspective view showing the punched lamina member.
4 is a perspective view showing a developed core segment unit by stacking punched lamina members according to the present invention to form first and second divided cores and combining them.
5 is a perspective view illustrating a process of inserting an insulating piece into a winding portion (core segment) of the deployed core segment unit.
6 is a perspective view illustrating a process of winding a coil in each winding portion into which an insulating piece is inserted.
7 is a front view illustrating a process of combining a core segment unit in which a coil is wound to form a circular motor core using a pneumatic machine.
8 is a front view illustrating a structure in which the core segment units are coupled in a circle.
9 is a front view illustrating a structure in which the circularly coupled core segment unit is fixed by welding the coupling portion by spot welding.
10 is a front view illustrating the process of fixing the circularly coupled core segment unit using an auxiliary ring and the fixed structure.
11 to 13 are views for explaining the process of manufacturing a divided core by punching out a lamina member in a circle and spreading it out in another embodiment of the present invention.
14 is a view showing an example of forming and combining a core segment unit with n divided cores.
15 is a view for defining the name of each part of the winding portion (core segment) of the present invention.

Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same names and the same reference numerals are used for the same components, and an additional description thereof will be omitted below.

In this specification, terms such as "first" and "second" are only terms used to distinguish a plurality of components, and do not limit the number or order of the components or assume that the structures are different, The term "connection" is a concept that includes "direct connection" or "indirect connection" via another configuration.

First, referring to FIGS. 1 to 10 , in the prefabricated divided core structure according to an embodiment of the present invention, as shown in FIG. 4 , a plurality of core segments formed by equal angular division of each winding of the circular core unit 10 is a yoke part ( Yp) is composed of a first divided core 10a and an nth divided core 10n that are horizontal in a state in which the outer portions are extended to be connected to each other.

For convenience of explanation, the divided core disposed on the left among the components of the core segment unit 10an spread out in a line in FIG. 4A is called a first divided core 10a, and the divided core disposed on the right is called the nth divided core. (10n), a direction in which the first divided core 10a is located is referred to as a front, and a direction in which the nth divided core 10n is located is referred to as a rear.

The first divided core 10a and the nth divided core 10n are the first lamina member through the punching molding process while automatically feeding and supplying the silicon steel sheet material S supplied in a roll state as shown in FIG. 3A in the longitudinal direction. (a) and the n-th lamina member (n) is manufactured. The first lamina member (a) and the n-th lamina member (n) divide the diameter of the circular core in 1/2 in the same shape as in FIG. It may be manufactured by a punching molding process so as to be horizontal in a state in which it is spread continuously.

The lamina member (an) is a thin plate-like structure also called an iron piece or a core sheet, and a layered structure manufactured by stacking and integrating the lamina members (an), that is, a first divided core (10a) and The n-th divided core 10n forms a part of the circular core unit of the above-described motor or generator.

In addition, as shown in Figure 3a, the yoke portions (Yp) of the first lamina member (a) and the n-th lamina member (n) are disposed opposite to each other so that the yoke portions (Yp) are disposed up and down and the magnetic pole end (Mp) portion intersects each other from the inside, but , The tooth (Mt) and the magnetic pole end (Mp) are placed as close as possible and punched. The punching process as described above can save about 25% of the silicon steel sheet material in the scrap (s1) compared to punching molding at regular intervals by integrating the core unit in a circular state, and the teeth (Mt) and stimulation If the small lamina member (s2) that can be used as a rotor or core unit of a small motor is simultaneously punched in the space created by arranging the stage (Mp) part as close as possible, it is possible to save about 30% of the silicon steel sheet material and thus the manufacturing cost. can be greatly reduced. In addition, the first divided core 10a and the nth divided core 10n described below may be punched without being separated into one core segment unit 10an, but the first divided core 10a and the nth divided core When punched by dividing by (10n) so that the magnetic pole ends (Mp) cross each other on the inside, the punching molding equipment can be made compact, which has the advantage of significantly reducing the arrangement space and installation cost of the equipment. For example, when the current press for punch molding in the form of a circular core as shown in FIG. 12A can produce a circular core with a diameter of about 100 mm, when a circular core with a diameter of 100 mm is spread out, it becomes about 314 mm or more. There is a problem that has to be replaced with a large one. In this case, as shown in FIG. 3, punch molding is performed with two first lamina members (a) and n-th lamina members (n) and stacking them respectively, as shown in FIG. 3A, two first divided cores 10a and a second If the n split core (10n) is produced in a structure that combines them, there is no need to replace the equipment with a larger one, and the current punching machine can be used as it is for production.

Although the drawings in this embodiment describe a circular core having six poles as two first divided cores 10a and an nth divided core 10n, the number of poles M is not limited to six. That is, the structure of the prefab split core of the present invention is designed to be composed of two or more n prefabricated split cores for a large round core, even if the equipment currently used can manufacture only a small round core, and these are shown in FIG. 3 and 14, a joint piece 10c is formed, and n divided cores formed by stacking n lamina members each punched are connected to each other as shown in FIG. 14, so that a large circular core with a large diameter can be produced Therefore, it has the advantage of being able to produce large cores with small equipment. In the present invention, n divided cores formed of n core segments formed by equal angular division of each winding of the circular core unit 10 can be designed in a structure that can be assembled by varying the number. Assuming that the number of divided cores formed by equiangular division of each winding of the circular core unit 10 is n, and m core segments are formed in the divided core, the number of m and n is 1≤m≥20, It is limited to the range of 2≤n≥10.

4, the first divided core 10a forms a second coupling groove 14 at one end of the yoke portion Yp of the a1th core segment 10a1 for coupling with the nth divided core 10n, and , the other end of the yoke portion Yp of the am-th core segment 10am includes a first divided core 10a forming a first coupling protrusion 11, and a plurality of core segments such as the first divided core 10a. One end of the yoke portion Yp of the n1th core segment 10n1, which is a first core segment, for connection with the first divided core 10a, has an n-th divided core 10n and the first coupling protrusion A first coupling groove 12 coupled to the 11 is formed, and the second coupling protrusion 13 coupled to the second coupling recess 14 is formed at the other end.

When the second coupling groove 14 and the second coupling protrusion 13 are pressed using a pneumatic machine (P) or the like from the outside to the inside with respect to the center of the stator as shown in FIG. 7 after winding the coil (C). The first divided core 10a and the nth divided core 10n are connected and assembled in the shape of the circular core unit 10 by being inserted into each other. As described above, since the first divided core 10a and the nth divided core 10n are assembled by pressing from the outside to the inside, there is an advantage that assembly is easy and precise unlike the prior art, and thus the assembly time is greatly shortened. Since it is shortened, the productivity of the stator core is improved.

On the other hand, in the present embodiment, although it is disclosed that the second coupling groove 14 is formed in the first divided core 10a and the second coupling protrusion 13 is formed in the nth divided core 10n, the first division It will be apparent to those skilled in the art that the second coupling protrusion 13 is formed in the core 10a, and the second coupling groove 14 can be formed in the n-th divided core 10n.

And when the first divided core 10a and the nth divided core 10n are coupled, the inside of the arc is cut at the other end of the yoke portion Yp where the first coupling protrusion 11 is formed so that the outside of the yoke is horizontal. The outer side of the arc continues to form a joint piece (10c) that spreads outward. As shown in Figure 4b, the coupling of the first coupling protrusion 11 of the first divided core 10a and the first coupling groove 12 of the nth divided core 10n is firmly coupled by a sliding structure, so that the joint piece 10c is not formed, the mth core segment 10am, which is the mth core segment of the first divided core 10a, and the n1th core segment 10n1, which is the first core segment of the nth divided core 10n, is the yoke portion Yp ) is formed in an arc shape, so that the core segment unit 10an cannot achieve a horizontal level in a state in which the outer portions of each yoke portion Yp are spread to each other. In this case, the pinch groove (Mg) as shown in Fig. 1b is formed, so it is difficult to wind the coil and it is impossible to manufacture by automation. Therefore, the joint piece 10c connects n divided cores to one core unit in the present invention to form a horizontal structure, which plays an important role in automation such as conveyor transfer.

A plurality of split cores from the second split core, the third split core, and the fourth split core to the n-1 split core are further coupled between the first split core 10a and the nth split core 10n. It is understandable that the number is not limited to two divided cores of the first divided core 10a and the nth divided core 10n.

The first coupling protrusion 11 and the first coupling groove 12 are fitted in a sliding coupling structure in the front and rear directions to be jointly coupled, and the second coupling protrusion 13 and the second coupling recess 14 are buttted to each other in a fitting manner. It has an assembled structure. In the above structure, since the coupling part does not come off when pressed around the origin of the core, as shown in FIG. 7 , the coil is wound around the core segment unit 10an in which the first divided core 10a and the nth divided core 10n are combined. There is an advantage that the circular core unit 10 can be directly implemented by the pneumatic machine (P). It is apparent to those skilled in the art that the joint piece 10c is formed in the first coupling groove 12 portion, and the formation positions of the first coupling protrusion 11 and the first coupling groove 12 can be formed by changing each other. I will do

On the other hand, the core segment unit (10an) is not manufactured by separating the first divided core (10a) and the nth divided core (10n), but after punching molding with a lamina member (an) made of one in the same shape as in FIG. 13B It is possible to manufacture and use a split core having an unfolding structure as shown in FIG. 13c by laminating.

The first divided core 10a and the nth divided core 10n are formed by stacking a plurality of first lamina members (a) and nth lamina members (n), respectively. In the lamination process, a plurality of the first lamina member (a) and the n-th lamina member (n) each punched out in FIG. 3 are laminated, which is the first lamina member (a) and the n-th lamina member ( n) by forming an embossing at an appropriate position on the top, the embossing is overlapped and the mutual friction surface is increased while being continuously laminated at a certain position in a supported state, or each of the first lamina member (a) and the nth lamina member (n) By drilling a support hole at an appropriate position of the , the support pin is continuously stacked at a predetermined position in a state in which the support hole is guided.

The first divided core 10a and the nth divided core 10n have an outer cut-out groove 18 on the outside of the yoke portion Yp to which each core segment is connected to facilitate expansion and assembly. In addition, it is possible to further form a very small inner cut-out groove 19 compared to the outer cut-out groove 18 on the inside of the yoke portion (Yp) so as to be easily and closely assembled when coupled to the inside. In the circular core unit 10 manufactured with the above structure, the concentricity, roundness, and cylindricity of the core can be precisely managed.

9 and 10, a first coupling protrusion 11, a first coupling groove 12, a second coupling protrusion 13 to which the first divided core 10a and the n-th divided core 10n are coupled, and The arc outer side of the yoke portion Yp to which the second coupling groove 14 abuts is integrated by spot welding, or the first divided core 10a and the nth divided core 10n are coupled to form a circular state core After the is formed, it is integrated by the coupling of the auxiliary ring (R1) having a L-shaped protrusion inward from both sides.

As shown in FIG. 4 , in the core segment unit 10an to which the first divided core 10a and the nth divided core 10n are coupled, the coil is wound after the insulating piece E is coupled as shown in FIG. 5 . After the coil is wound, it is assembled in a circular shape by a pneumatic machine (P) as shown in FIG. 7, and is formed in a circular shape when the second coupling groove 14 and the second coupling protrusion 13 are fitted together as shown in FIG. The circular core unit 10 is fixed by spot welding as shown in FIG. 9 so that the shape can be maintained as it is. In addition, as shown in Figure 10, the auxiliary ring (R1) having a L-shaped protrusion in a plurality of grooves formed on the outer circumferential surface of the circular core unit 10 can be fitted and fixed from both sides. The auxiliary ring R1 having the L-shaped protrusion can support the shape of the assembled circular core unit 10 as it is inserted into the outer circumferential surface of the circular core unit 10 .

In another aspect of the present invention, in a prefabricated divided core structure in which a divided core is assembled to form a core for a motor or a generator, a plurality of core segments formed by equal angular division of each winding of the circular core unit 10 is a yoke part ( A core segment unit (10an) in which the outer part of the Yp) is horizontally extended to be connected to each other; When the core segment unit (10an) is formed in a circular shape, the first and last core segments have a second coupling groove (14) and a second coupling protrusion (13) at both ends; provides a prefabricated divided core structure, characterized in that it is formed . That is, as shown in FIG. 11, a circular core segment unit is punched, and a plurality of core segments formed by equal angular division of each winding are spread out so that the outer part of the yoke part Yp is connected to each other. can In addition, the space remaining after the first and second lamina members are formed as shown in FIG. 11B can reduce the silicon steel sheet by simultaneously forming and punching the lamina members for the rotor or stator for a small motor or generator.

In another aspect of the present invention, in the method for manufacturing a core for a motor or generator using the prefabricated core formed by assembling a divided core, a metal strip is punched to form a first lamina member and an nth lamina member to do; forming a first divided core and an nth divided core by stacking and integrating the first lamina member and the nth lamina member by a predetermined number; slidingly coupling the first coupling protrusion of the first divided core with the second coupling groove of the nth divided core; inserting an insulating bobbin into the teeth of the combined first divided core and the nth divided core from both sides to the inside and combining; winding a coil on the insulated bobbin; forming a horizontal first divided core and an nth divided core in a circular shape using a pneumatic machine; Including; fixing the outside of the core formed in a circular shape.

In the step of forming the first lamina member and the n-th lamina member, the circular lamina member is divided equal to each winding part, and the divided surfaces are horizontally spread out to be connected to each other, and are cross-opposed and punched, or each It is characterized in that it is any one of forming a circular lamina member punched by equal angular division of the winding part so that the divided surfaces are connected to each other horizontally.

As a method of forming the above-described first divided core and n-th divided core, that is, a laminated core manufacturing method for stacking and integrating the lamina member (an), a tab fixing method using an interlock tab, welding, for example, laser welding A welding fixing method using a rivet fixing method, and an adhesive fixing method for bonding the interlayers of lamina members with an adhesive type are known.

Examples of split cores manufactured in a stacking method are variously presented in Registered Patent No. 10-0964540, Registered Patent No. 10-0856032, and Registered Patent No. 10-0849023, etc. The split core disclosed in No. 10-0849023 achieves mechanical interlayer bonding by means of interlock tabs. The above-described mold for manufacturing a laminated split core by an interlock tab includes a pin for forming an interlock tab, a counter hole punch for splitting between the cores, and a blanking punch for blanking, in addition to drilling a metal strip At least one type of punch may be further provided for.

In addition, examples of manufacturing a laminated core using the above-described adhesive fixing method (adhesive laminated core) are disclosed in Patent Registration Nos. 10-1566491 and 10-1659238 and the like. Therefore, since the apparatus itself for punching out a metal strip to form a laminated core is known in various ways, an additional description thereof will be omitted.

As described above, the lamina member (an) may be manufactured by punching a metal strip, and when the lamina members (an) are stacked and integrated by a predetermined number of pieces, the first coupling protrusion 11 described above and the first divided core 10a and the nth divided core 10n in which the second coupling groove 14 , the first coupling groove 12 and the second coupling protrusion 13 are formed can be manufactured.

As described above, the embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope of the present invention other than the above-described embodiments is recognized by those with ordinary skill in the art. It is self-evident to

Therefore, the above-described embodiments are to be regarded as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

S: Silicon steel sheet material
s1: scrap
s2: small lamina member
an: lamina member
a: the first lamina member
n: nth lamina member
10: round core unit
10an: core segment unit
10a: first divided core
10a1: a1th core segment
10a2: a2th core segment
10am: First AM Core Segment
10n: nth split core
10n1: n1th core segment
10n2: n2th core segment
10nm: 1st nm core segment
10c: seam
11: first coupling protrusion
12: first coupling groove
13: second coupling protrusion
14: second coupling groove
17: incision line
18: outer incision groove
19: inner incision groove
E: insulation
E1: 1st insulation piece
E2: 2nd insulation piece
C: coil
P: pneumatic
J: junction
J1: Weld
R: auxiliary ring coupling part
R1: auxiliary ring
M: stimulus
Mp: excitation group
Mt: tooth
Ms: winding groove
Mg: Hyupji Home
Yp: York Department
Yi: Inner arc
Yo: outer arc

Claims (11)

A first divided core 10a and an nth divided core 10n in which a plurality of core segments formed by equal angular division of each winding of the circular core unit 10 form a horizontal state in which the outer portions of the yoke portion Yp are spread to each other ), but
One end of the yoke portion Yp of the a1th core segment 10a1 is formed with a second coupling groove 14 for coupling with the nth divided core 10n, and the yoke portion Yp of the amth core segment 10am is formed. ) the other end is a first divided core (10a) forming a first coupling projection (11);
It consists of a plurality of core segments such as the first divided core 10a, and one end of the yoke portion Yp of the n1th core segment 10n1 for connection with the first divided core 10a is the first coupling protrusion (11) forming a first coupling groove (12) coupled to the other end of the second coupling protrusion (13) coupled to the second coupling groove (14) formed in the n-th divided core (10n); prefabricated split core structure. According to claim 1,
When the first divided core 10a and the nth divided core 10n are coupled, the other end of the yoke portion Yp on which the first coupling protrusion 11 is formed is cut so that the outside of the yoke is horizontal, and the inside of the arc is cut. A prefabricated split core structure, characterized in that the outer side is connected and a joint piece (10c) that spreads outward is formed. According to claim 1,
The first coupling protrusion 11 and the first coupling groove 12 are fitted in a sliding coupling structure in the front and rear directions to be jointly coupled, and the second coupling protrusion 13 and the second coupling recess 14 are buttted to each other in a fitting manner. Prefab split core structure, characterized in that it has a structure to be assembled. According to claim 1,
The first divided core (10a) and the n-th divided core (10n) is a prefabricated divided core structure, characterized in that the plurality of first lamina members (a) and n-th lamina members (n) are respectively stacked and formed . According to claim 1,
The first divided core (10a) and the nth divided core (10n) is a prefabricated division, characterized in that it has an outer incision groove (18) on the outside of the yoke portion (Yp) to which each core segment is connected to facilitate unfolding and assembling core structure. According to claim 1,
A first coupling protrusion 11 and a first coupling groove 12 to which the first divided core 10a and the nth divided core 10n are coupled, a second coupling protrusion 13 and a second coupling groove 14 The outer arc of the abutting yoke portion (Yp) is a prefabricated divided core structure, characterized in that it is integrated by a combination of spot welding. According to claim 1,
After the first divided core (10a) and the nth divided core (10n) are combined to form a circular state core, it is characterized in that it is integrated by coupling of auxiliary rings (R1) having L-shaped protrusions inward from both sides. Prefabricated split core structure. According to claim 1,
Assuming that the number of divided cores formed by equiangular division of each winding of the circular core unit 10 is n, and m core segments are formed in the divided core, the number of m and n is 1≤m≥20, Prefab split core structure, characterized in that 2≤n≥10 range. In the prefabricated split core structure for assembling a split core to form a core for a motor or generator,
A core segment unit (10an) in which a plurality of core segments formed by equal angular division of each winding part of the circular core unit (10) form a horizontal state in which the outer parts of the yoke part (Yp) are unfolded to be connected to each other;
When the core segment unit (10an) is formed in a circular shape, the first and last core segments have a second coupling groove (14) and a second coupling protrusion (13) at both ends. In the method of manufacturing a core for a motor or generator using a prefabricated core formed by assembling a split core,
forming a first lamina member and an nth lamina member by punching a metal strip;
forming a first divided core and an nth divided core by stacking and integrating the first lamina member and the n-th lamina member by a predetermined number;
slidingly coupling the first coupling protrusion of the first divided core with the second coupling groove of the nth divided core;
inserting an insulating bobbin into the teeth of the combined first divided core and the nth divided core from both sides to the inside and combining;
winding a coil on the insulated bobbin;
forming a horizontal first divided core and an nth divided core in a circular shape using a pneumatic machine;
A method of manufacturing a split core for a motor or generator, comprising: coupling a spot welding or auxiliary ring to the outside of the circularly formed core. 11. The method of claim 10,
The step of forming the first lamina member and the n-th lamina member
The circular lamina member is divided into equal parts by dividing each winding part to be horizontally divided into a state in which the divided surfaces are connected to each other, so that they are crossed and punched out. A method of manufacturing a split core for a motor or generator, characterized in that any one of them are formed to be extended to each other.

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