KR102623082B1 - Manufacturing apparatus for motor core - Google Patents

Abstract

The present invention relates to a motor core manufacturing apparatus for injecting resin into a magnet insertion hole to fix a magnet inserted into the magnet insertion hole of a laminated core, comprising a base frame, an upper mold provided on the base frame, and the upper A lower mold provided on the base frame to face the mold, a core pressing unit that presses a plurality of laminated cores provided in the upper mold with magnets inserted into magnet insertion holes together with the lower mold, and the lower mold. It is provided in a mold and includes a resin supply unit that injects resin into the magnet insertion hole while the plurality of laminated cores are pressed. With this configuration, the magnets can be fixed by pressurizing each of the plurality of laminated cores and then injecting resin at the same time, which has the effect of saving manufacturing time.

Description

Manufacturing equipment for motor core {MANUFACTURING APPARATUS FOR MOTOR CORE}

The present invention relates to a motor core manufacturing apparatus, and more specifically, to a motor core manufacturing apparatus for injecting resin into a magnet insertion hole to fix a magnet inserted into the magnet insertion hole of a laminated core.

A motor is a mechanical device that obtains rotational power from electrical energy and includes a stator and a rotor. The rotor interacts electromagnetically with the stator and rotates with the force exerted by the magnetic field and the current flowing in the coil.

The stator refers to a stationary part of a rotating device such as a motor, that is, a fixed part that does not rotate. For example, in the case of an induction machine, the stator is composed of a stator core and a stator winding.

Additionally, the rotor includes a rotor core forming a rotating body and a magnet fixed to a slot of the rotor core. And a plurality of slots into which the magnets are inserted are formed in the rotor core.

A typical rotor for a motor includes a plurality of magnets arranged along the circumferential direction around a rotation axis, a rotor core that supports the magnets and forms a path for magnetic flux, and an injection molding member that covers the magnets and fixes them to the rotor core. Includes.

Conventionally, BMC (Bulk Molding Compound) was injected to fix the magnet in the slot.

That is, in the case of BMC injection, the rotor core with the magnet provisionally assembled is inserted into a mold and then injection molded with a plastic material, so that the molding member for fixing the magnet can be integrated into the rotor core.

However, in the case of fixing the magnet to the rotor core using the insert injection method described above, mold production is required for each product, and in particular, there is a problem of the rotor core being deformed due to the high temperature and pressure accompanying the insert injection process.

Korean Patent Publication No. 2015-0009891 (2015.01.27)

The present invention was created to solve the above problems, and its purpose is to provide a motor core manufacturing device capable of fixing a magnet inserted into the magnet insertion hole of a laminated core by injecting resin into the magnet insertion hole. There is.

According to the present invention, the purpose of the present invention is to provide a motor core manufacturing apparatus capable of fixing a magnet by simultaneously pressurizing a plurality of laminated cores and then simultaneously injecting resin.

In order to achieve the above object, a motor core manufacturing apparatus according to a preferred embodiment of the present invention includes a base frame; an upper mold provided on the base frame; a lower mold provided on the base frame to face the upper mold; A core pressing unit provided in the upper mold in plurality and pressurizing a plurality of laminated cores each having magnets inserted into magnet insertion holes together with the lower mold; and a resin supply unit provided in the lower mold and injecting resin into the magnet insertion hole while the plurality of laminated cores are pressed.

Here, the plurality of core pressing units may be provided to operate respectively to pressurize a plurality of laminated cores having different heights.

And, the core pressing part includes a pressing plate in contact with the upper side of the laminated core; and a pressure actuator provided on the upper mold and moving the pressure plate to pressurize the laminated core.

Here, a plurality of press actuators may be provided, and may operate at least the same or differently to press the press plate.

In addition, the core pressing unit may further include a pressing unit elastic member disposed between the upper mold and the pressing actuator and applying an elastic force to return the pressing actuator to its original position.

In addition, the motor core manufacturing apparatus according to an embodiment of the present invention is disposed between the upper mold and the lower mold, the upper side selectively contacts the upper mold, and the lower side selectively contacts the lower mold. central base; and a plurality of moving plates on which the plurality of laminated cores are respectively disposed, seated on the center base, and having a communication hole communicating with the resin supply unit and the magnet insertion hole.

After resin is injected into the magnet insertion hole, when the lower mold and the center base are separated, residual resin may remain on the resin supply part.

In addition, the motor core manufacturing apparatus according to an embodiment of the present invention may further include a return pressing unit provided in the core pressing unit and pressing the laminated core in a direction away from the laminated core.

According to the motor core manufacturing device according to the present invention, by injecting resin into the magnet insertion hole, the magnet inserted into the magnet insertion hole of the laminated core can be fixed without any empty space, thereby achieving the effect of preventing vibration and noise. there is.

Additionally, according to the present invention, the magnets can be fixed by pressurizing each of the plurality of laminated cores and simultaneously injecting resin, thereby saving manufacturing time.

1 is a diagram schematically showing a motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 2 is a diagram schematically showing the main parts of the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 3 is a diagram schematically showing the state in which the moving plate is arranged on the center base in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 4 is a diagram schematically showing a state in which the lower mold is in contact with the center base in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 5 is a diagram schematically showing a state in which the center base is pressed by the upper mold and the lower mold in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 6 is a diagram schematically showing a state in which the resin supply unit operates and injects resin into the magnet insertion hole in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 7 is a diagram schematically showing the state in which the upper mold and lower mold are separated from the center base after supplying resin in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 8 is a diagram schematically showing an excerpt of a core pressing part from the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 9 is a diagram schematically showing the operating state of the return pressing unit in the motor core manufacturing apparatus according to an embodiment of the present invention;
Figure 10 is a diagram schematically showing a state in which laminated cores of different heights are pressed in the motor core manufacturing apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted as including all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions, unless the context clearly indicates otherwise.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries can be interpreted as having meanings consistent with the meanings they have in the context of related technologies, and unless clearly defined in this application, are interpreted as having an ideal or excessively formal meaning. It may not work.

Hereinafter, specific embodiments of the present invention will be described with reference to the attached drawings.

Figure 1 is a diagram schematically showing a motor core manufacturing apparatus according to an embodiment of the present invention, and Figure 2 is a diagram schematically showing main parts extracted from the motor core manufacturing apparatus.

3 to 7 are diagrams sequentially illustrating the operating state of fixing the magnet by injecting resin into the magnet insertion hole of the laminated core by the motor core manufacturing apparatus. More specifically, Figure 3 shows a state in which a moving plate is disposed on the center base in the motor core manufacturing apparatus, Figure 4 shows a state in which the lower mold is in contact with the center base, and Figure 5 shows the center base being in contact with the upper mold. It is in a pressurized state by the lower mold, and Figure 6 shows a state in which the resin supply unit operates to inject resin into the magnet insertion hole, and Figure 7 schematically shows the state in which the upper mold and lower mold are separated from the center base after resin supply. This is a drawing shown.

And, Figure 8 is a diagram schematically showing the core pressurizing part extracted from the motor core manufacturing apparatus, and Figure 9 is a diagram schematically showing the operating state of the return pressurizing part in the motor core manufacturing apparatus.

And, Figure 10 is a diagram schematically showing a state in which laminated cores of different heights are pressed in the motor core manufacturing apparatus.

1 to 10, the motor core manufacturing apparatus 100 according to an embodiment of the present invention includes a base frame 110, an upper mold 200 provided on the base frame 110, and the upper mold 200. A lower mold 400 provided on the base frame 110 to face the mold 200, and a plurality of laminated cores provided in the upper mold 200 and with magnets inserted into the magnet insertion hole 11 ( 10) together with the lower mold 400, and a core pressing unit 210 that is provided in the lower mold 400 and in which the plurality of laminated cores 10 are pressed, the magnet insertion hole 11 ) may include a resin supply unit 410 for injecting resin.

That is, the motor core manufacturing apparatus 100 according to an embodiment of the present invention is provided with a plurality of core pressing parts 210 in the upper mold 200, so that a plurality of laminated cores 10 are applied to each core. After the pressing unit 210 presses simultaneously, the resin supply unit 410 simultaneously injects resin into the magnet insertion hole 11 to fix the magnet 20.

In addition, the plurality of core pressurizing units 210 are provided to operate separately, so that they can pressurize a plurality of laminated cores 10 having different heights.

At this time, since the plurality of core pressing units 210 can operate separately, the plurality of laminated cores 10 having different heights can be simultaneously pressed with the same pressure.

Through this, the magnets 20 can be fixed to a plurality of laminated cores 10 in a single process, and laminated cores 10 of different heights can also be manufactured simultaneously, which has the advantage of saving manufacturing time. there is.

In addition, the motor core manufacturing apparatus 100 according to an embodiment of the present invention includes a center base 300 disposed between the upper mold 200 and the lower mold 400, and the laminated core 10. and may further include a moving plate 120 mounted on the central base 300.

Here, a plurality of moving plates 120 are provided so that a plurality of the laminated cores 10 are respectively disposed, and the plurality of moving plates 120 are simultaneously seated on the center base 300.

In addition, a communication hole 123 is formed in the moving plate 120 to communicate with the resin supply unit 410 and the magnet insertion hole 11, so that the resin supplied from the resin supply unit 410 flows through the communication hole. It can be injected into the magnet insertion hole 11 through (123).

Below, each configuration will be described in more detail.

The base frame 110 is a component that forms the external appearance of the motor core manufacturing apparatus 100. As an example, the base frame 110 may be equipped with press equipment to move at least one of the upper mold 200 and the lower mold 400 in the vertical direction.

The upper mold 200 is provided on the upper side of the base frame 110. Additionally, the upper mold 200 is provided to press the upper side of the laminated core 10 while injecting resin into the magnet insertion hole 11 of the laminated core 10.

The lower mold 400 is provided on the base frame 110 to face the upper mold 200. And, the lower mold 400 moves so that the upper side of the laminated core 10 is pressed by the upper mold 200 while injecting resin into the magnet insertion hole 11 of the laminated core 10. Provided to pressurize the plate 120.

That is, the upper mold 200 and the lower mold 400 press the laminated core 10 disposed on the moving plate 120 from both sides and inject resin into the magnet insertion hole 11. can be provided.

The center base 300 is disposed between the upper mold 200 and the lower mold 400 and is movable in the vertical direction.

As an example, the center base 300 is disposed between the upper mold 200 and the lower mold 400 and includes a base plate 310 on which the moving plate 120 is seated, and one end of the base plate ( It may include a plurality of guide parts 320 that are fastened along the circumference of 310 and the other side of which is inserted into the upper mold 200 and slides.

With this configuration, when the upper mold 200 moves downward or the lower mold 400 moves upward while the lower side of the base plate 310 is in contact with the lower mold 400, the lower mold 400 moves upward. As the guide portion 320 is inserted into the upper mold 200, the upper side of the base plate 310 may move to contact the upper mold 200.

That is, the center base 300 may be configured so that its upper side selectively contacts the upper mold 200 and its lower side selectively contacts the lower mold 400. At this time, the laminated core 10 disposed on the moving plate 120 may be pressed by the upper mold 200 and the lower mold 400.

The base plate 310 is formed with a through hole 311 passing through the center, so that the resin supply unit 410 can be inserted. That is, the lower side of the moving plate 120 is exposed through the through hole 311, and the resin supply unit 410 inserted into the through hole 311 is in close contact with the lower side of the moving plate 120. It can be. Through this, the resin supplied from the resin supply unit 410 can be supplied to the magnet insertion hole 11 of the laminated core 10 through the communication hole 123 of the moving plate 120.

Additionally, the base plate 310 may be provided with a clamp 330 that fixes the position of the movable plate 120.

The clamp 330 may fix the movable plate 120 mounted on the base plate 310 to be located at the upper center of the through hole 311. At this time, the fastening position of the moving plate 120 may be set by the clamp 330 so that the communication hole 123 of the moving plate 120 is located above the resin supply unit 410.

And, as shown in the drawing, the base plate 310 is provided with a plurality of through holes 311 and a plurality of clamps 330, so that a plurality of the moving plates 120 can be arranged.

The moving plate 120 has a laminated core 10 with magnets 20 inserted into a plurality of magnet insertion holes 11, is seated on the center base 300, and has the magnet insertion holes 11 and A communicating hole 123 may be formed.

As an example, the moving plate 120 includes a plate portion 121 on which the laminated core 10 is seated, and a through hole protruding from the center of the plate portion 121 and formed through the center of the laminated core 10. It may include a protrusion 122 inserted into.

Additionally, a communication hole 123 may be formed in the plate portion 121 to allow the resin supplied from the resin supply portion 410 to flow.

Here, the communication hole 123 may be formed at a position corresponding to each position of the plurality of magnet insertion holes 11 formed in the laminated core 10. That is, the resin injected through one communication hole 123 can be supplied to one magnet insertion hole 11.

As such, the communication hole 123 may be formed in a shape in which the diameter becomes smaller as it moves in the thickness direction. That is, the large-diameter portion of the communication hole 123 may be connected to the resin supply unit 410, and the small-diameter portion of the communication hole 123 may be connected to the magnet insertion hole 11. .

In addition, a guide protrusion (not shown) is formed on one of the protrusions 122 and through holes of the laminated core 10, and a slit (not shown) is formed on the other, so that the laminated core is inserted into the protrusion 122. The position of (10) can be set in advance.

That is, when the laminated core 10 is placed on the moving plate 120, the magnet insertion hole 11 formed in the laminated core 10 is on the communication hole 123 formed in the moving plate 120. must be located

Therefore, a guide protrusion and a slit are formed on the protrusion 122 and the through hole of the laminated core 10 to position the laminated core 10 so that the magnet insertion hole 11 is located on the communication hole 123. It can be placed on the moving plate 120.

The resin supply unit 410 is provided in the lower mold 400, and the communication hole 123 is opened in a state in which the laminated core 10 is pressed by the upper mold 200 and the lower mold 400. Resin can be injected into the magnet insertion hole 11 through.

As an example, the resin supply unit 410 is arranged to be movable inside the resin supply port 411 and the resin supply port 411 where the resin is disposed, and presses the molten resin into the magnet insertion hole 11. It may include a resin supply piston 412 to inject, and a resin supply actuator 413 to move the resin supply piston 412 in the vertical direction.

Here, the resin may be, for example, EMC (Epoxy Molding Compound), and the block-shaped EMC may be inserted into the resin supply port 411, heated, melted, and then injected.

With this configuration, a block-shaped resin (BS) is inserted into the resin supply port 411, and the upper mold 200 and the lower mold 400 are brought into contact with both sides of the center base 300 to stack the resin. After pressurizing the core 10 and heating the resin supply port 411 to melt the resin, the resin supply actuator 413 moves the resin supply piston 412 to transfer the molten resin into the magnet insertion hole ( 11) can be injected.

At least one resin supply unit 410 may be provided corresponding to the communication hole 123 of the moving plate 120. As an example, a plurality of the resin supply units 410 may be provided, and one resin supply unit 410 may be configured to supply resin to at least one or two communication holes 123 .

The core pressing unit 210 is provided in plurality in the upper mold 200 and is configured to pressurize each of the plurality of laminated cores 10 into which the magnets 20 are inserted into the magnet insertion hole 11.

That is, in a state where the lower side of the center base 300 is supported in contact with the lower mold 400 and the upper side is supported in contact with the upper mold 200, as shown in FIG. 5, a plurality of Each of the core pressing units 210 is in close contact with each of the upper sides of the plurality of laminated cores 10 to press the laminated cores 10.

More specifically, the core pressing unit 210 is provided on a pressing plate 211 in contact with the upper side of the laminated core 10 and the upper mold 200, and moves the pressing plate 211 to press the pressing plate 211. It may include a pressurizing actuator 212 that pressurizes the laminated core 10.

That is, since the plurality of core pressing units 210 can be individually operated by the pressure actuator 212 provided, even if the plurality of laminated cores 10 have different heights, the pressure actuator 212 A plurality of laminated cores 10 can be pressurized through individual control.

As an example, referring to FIG. 10, when the laminated core 10a, which has a relatively small height, and the laminated core 10b, which have a relatively large height, are simultaneously pressed and filled with resin, the laminated core 10a, which has a relatively small height, is filled with resin. The core pressing part 210a that presses moves further than the core pressing part 210b that presses the relatively tall laminated core 10b, so that the laminated core 10a with a small height and the laminated core 10b with a large height move further. ) can be pressurized simultaneously.

In addition, the pressure actuator 212 is provided in plurality and can press the pressure plate 211 by operating at least the same or differently.

The laminated core 10 is manufactured by stacking a plurality of plates, and height deviation of the laminated core 10 may occur due to the manufacturing process or variation in the thickness of the plates. That is, the upper side with which the core pressing part 210 contacts may be formed to be inclined.

In this case, when the core pressing unit 210 presses with a certain force in the vertical direction, the high portion of the inclined upper side of the laminated core 10 is preferentially contacted and pressed by the core pressing unit 210. , different pressing forces are applied to the laminated core 10 as a whole.

That is, the high portion of the inclined upper side of the laminated core 10 is preferentially pressed with a relatively large pressing force, causing a problem that the laminated core 10 may be damaged. In addition, a relatively small pressing force is applied to a low portion of the inclined upper side of the laminated core 10, so there is a problem in that an uneven pressing force is applied to the entire laminated core 10.

Therefore, in order to solve this problem, the motor core manufacturing apparatus 100 according to an embodiment of the present invention is equipped with a plurality of pressurizing actuators 212 and pressurizes the pressurizing plate 211 with at least the same or different pressing force. can do.

As an example, the pressure actuators 212 are provided in four pieces and are spaced radially at regular intervals based on the center of the laminated core 10, and operate the upper side of the laminated core 10 differently at 4 points to It may be configured to pressurize the pressing plate 211.

With this configuration, the pressure actuators 212 are provided in four pieces, and if the laminated core 10 is formed to be inclined, when the four pressure actuators 212 move with the same displacement, the pressure plate 211 The laminated core 10 is partially pressed.

Accordingly, each of the pressure actuators 212 is provided to enable pressure control, so that each of the pressure actuators 212 can be controlled to press the pressure plate 211 with the same pressure. Through this, the pressure plate 211 can be controlled to press the laminated core 10 with the same overall pressure.

In addition, the core pressing part 210 is disposed between the upper mold 200 and the pressing actuator 212, and includes a pressing part elastic member 213 that applies elastic force to return the pressing actuator 212 to its original position. ) may further be included.

For example, when the pressing actuator 212 is configured to provide only pressing force, when the pressing actuator 212 removes the pressing force, the pressing portion elastic member 213 applies elastic force to return the pressing actuator 212 to its original position. can be approved.

Of course, the pressing actuator 212 may be configured to move in both directions of applying and removing pressing force. In this case, the pressing portion elastic member 213 may provide additional return force when the pressing actuator 212 returns to its original position by removing the pressing force.

Below, the operation of fixing the magnet 20 by injecting resin into the magnet insertion hole 11 of the laminated core 10 using the motor core manufacturing apparatus 100 according to an embodiment of the present invention will be described in order. .

First, the laminated core 10 is placed on the moving plate 120, and the magnet 20 is inserted into the magnet insertion hole 11 of the laminated core 10. At this time, the magnet insertion hole 11 is located on the communication hole 123 of the moving plate 120.

Then, after the laminated core 10 into which the magnet 20 is inserted is placed on the movable plate 120 and preheated together, as shown in FIG. 3, the movable plate 120 on which the laminated core is disposed is is seated on the center base 300.

Then, at least one of the upper mold 200 and the lower mold 400 is moved to come into close contact with both surfaces of the center base 300 to press the laminated core 10.

For example, as shown in FIG. 4, the lower mold 400 moves upward and contacts the lower side of the center base 300, and the resin supply unit 410 moves to the lower side of the moving plate 120. is placed in

At this time, in order to accurately position the joining position of the lower mold 400 and the central base 300, the first guide protrusion 401 formed on the lower mold 400 is formed on the central base 300. 1 It may be configured to be inserted into the guide groove 312.

In addition, in order to accurately position the communication hole 123 of the movable plate 120 and the resin supply unit 410, the second guide protrusion 402 formed on the lower mold 400 is provided with the movable plate ( It may be configured to be inserted into the second guide groove 124 formed in 120).

Then, the upper mold 200 or the lower mold 400 moves further, so that the upper mold 200 contacts the upper side of the center base 300, as shown in FIG. 5.

At this time, in order to accurately position the coupling position of the upper mold 200 and the center base 300, the third guide protrusion 403 formed on the lower mold 400 is formed on the upper mold 200. 3 It may be configured to be inserted into the guide groove 201.

In this case, the resin supply unit 410 is in close contact with the lower side of the moving plate 120 and communicates with the communication hole 123, and the core pressing unit 210, described below, is attached to the upper side of the laminated core 10. It is in close contact with the side and pressurizes the laminated core 10 with a certain pressure.

And, as shown in FIG. 6, the resin supply unit 410 is operated to inject molten resin into the magnet insertion hole 11 through the communication hole 123.

Then, after the resin injection is completed and the time for the resin to harden has elapsed, as shown in FIG. 7, the upper mold 200 and the lower mold 400 are spaced apart from the center base 300.

At this time, the residual resin (RS) remaining after being supplied to the magnet insertion hole 11 remains on the resin supply unit 410. That is, in the process of separating the lower mold 400 and the central base 300, the residual resin (RS) does not remain on the moving plate 120, but all remains on the resin supply unit 410. .

Also, by separating the laminated core 10 from the moving plate 120, the laminated core 10 with the magnet fixed to the magnet insertion hole 11 can be manufactured without any additional residual resin removal work.

In addition, the motor core manufacturing apparatus 100 according to an embodiment of the present invention is provided in the mold and includes a return pressing unit 220 that presses the laminated core 10 in a direction away from the laminated core 10. It may be further included.

The return pressing unit 220 is provided in the upper mold 200 and is configured to press the laminated core 10 in a direction away from the laminated core 10 when separated from the lower mold 400.

Here, the return pressing unit 220 may be provided in the core pressing unit 210 provided in the upper mold 200.

The return pressing unit 220 includes a return pressing pin 221 provided on the pressing plate 211 of the core pressing unit 210, and a return elastic force that applies elastic force so that the return pressing pin 221 protrudes outward. It may include a member 222.

More specifically, one end of the return pressure pin 221 may be disposed inside the pressure plate 211, and the other end may be provided to selectively protrude to the outside of the pressure plate 211.

While the return pressing pin 221 is disposed on the pressing plate 211, the other end of the return pressing pin 221 may be provided to protrude to the outside of the pressing plate 211 to press the laminated core 10.

To this end, one end of the return pressing pin 221 disposed on the pressing plate 211 is formed to have a larger diameter than the other end protruding outward, so that the return pressing pin 221 is connected to the pressing plate 211. It can be positioned within the pressure plate 211 without deviating from it.

The return elastic member 222 is provided between the pressure plate 211 and one end of the return pressure pin 221, and is provided to apply an elastic force so that the other end of the return pressure pin 221 protrudes outward. do.

After the core pressing unit 210 presses the laminated core 10 and fills the resin, in the process of separating the core pressing unit 210 from the laminated core 10, the laminated core 10 is A situation where the pressurizing part 210 becomes stuck may occur.

That is, the core pressing unit 210 presses the laminated core 10 above a certain pressure for a certain period of time, and at this time, the resin supply unit 410 is heated and the laminated core 10 is also heated, causing a deadlock phenomenon. It can happen.

Therefore, as shown in FIG. 9, the return pressing pin 221 of the return pressing unit 220 presses the laminated core 10 while the core pressing unit 210 presses the laminated core 10. It is pressed by and placed inside the pressing plate 211.

Then, when the core pressing part 210 moves in the direction in which it is separated from the laminated core 10, the return pressing pin 221 protrudes due to the elastic force of the return elastic member 222 and the laminated core 10 ) is pressed to provide a pressing force that separates the laminated core 10 from the core pressing unit 210.

Through this, the laminated core 10 can be easily separated from the core pressing part 210 after the laminated core 10 is pressed and the resin is injected.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and the present invention is intended to be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modification or improvement is possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

10: Laminated core 20: Magnet
100: Motor core manufacturing device 110: Base frame
120: moving plate 121: plate portion
122: Protrusion 123: Communication hole
200: upper mold 210: core pressurizing part
211: Pressure plate 212: Pressure actuator
213: pressing portion elastic member 220: return pressing portion
221: return pressure pin 222: return elastic member
300: Center base 310: Base plate
320: Guide part 330: Clamp
400: Lower mold 410: Resin supply unit
411: Resin supply port 412: Resin supply piston
413: Resin supply actuator

Claims (8)

base frame;
an upper mold provided on the base frame;
a lower mold provided on the base frame to face the upper mold;
A core pressing unit provided in the upper mold in plurality and pressurizing a plurality of laminated cores each having magnets inserted into magnet insertion holes together with the lower mold;
a resin supply unit provided in the lower mold and injecting resin into the magnet insertion hole while the plurality of laminated cores are pressurized;
a center base disposed between the upper mold and the lower mold, slidingly coupled to the upper mold, and having a lower side selectively contacting the lower mold; and
It includes a plurality of moving plates on which the plurality of laminated cores are respectively disposed, seated on the center base, and having a communication hole communicating between the resin supply unit and the magnet insertion hole,
The core pressing part is,
a pressure plate in contact with the upper side of the laminated core; and
a pressure actuator provided on the upper mold and moving the pressure plate to pressurize the laminated core;
A motor core manufacturing device comprising:
According to paragraph 1,
The plurality of core pressing units,
An apparatus for manufacturing a motor core, characterized in that it is provided to pressurize a plurality of laminated cores having different heights by operating individually.
delete According to paragraph 1,
The pressure actuator,
A motor core manufacturing apparatus comprising a plurality of press plates and capable of pressurizing the press plates with at least the same or different press forces.
According to paragraph 1,
The core pressing part is,
a pressing portion elastic member disposed between the upper mold and the pressing actuator and applying an elastic force to return the pressing actuator to its original position;
A motor core manufacturing apparatus further comprising:
According to paragraph 1,
The central base is,
a base plate disposed between the upper mold and the lower mold and on which the moving plate is seated; and
A plurality of guide parts are provided, one end of which is fastened along the circumference of the base plate, and the other end of which is inserted into the upper mold and slides;
A motor core manufacturing device comprising:
According to paragraph 1,
A motor core manufacturing apparatus, characterized in that when the lower mold and the central base are separated after resin is injected into the magnet insertion hole, residual resin remains on the resin supply part.
According to paragraph 1,
a return pressing unit provided at the core pressing unit and pressing the laminated core in a direction away from the laminated core;
A motor core manufacturing apparatus further comprising: