WO2023033252A1 - Appareil de fabrication de noyau de rotor - Google Patents

Appareil de fabrication de noyau de rotor Download PDF

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Publication number
WO2023033252A1
WO2023033252A1 PCT/KR2021/017634 KR2021017634W WO2023033252A1 WO 2023033252 A1 WO2023033252 A1 WO 2023033252A1 KR 2021017634 W KR2021017634 W KR 2021017634W WO 2023033252 A1 WO2023033252 A1 WO 2023033252A1
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WO
WIPO (PCT)
Prior art keywords
magnet
rotor core
molding
jig
lower mold
Prior art date
Application number
PCT/KR2021/017634
Other languages
English (en)
Inventor
Seung Soo Kim
Original Assignee
Bmc Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bmc Co., Ltd. filed Critical Bmc Co., Ltd.
Publication of WO2023033252A1 publication Critical patent/WO2023033252A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14008—Inserting articles into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article

Definitions

  • the present invention relates to an apparatus for manufacturing a rotor core. More specifically, the present invention relates to an apparatus for manufacturing a rotor core capable of automatically supplying a magnet inserted into a rotor core and fixing a magnet by molding the magnet with resin, thereby improving product quality and production efficiency.
  • a motor comprises a rotor and a stator.
  • the rotor is configured to rotate by a changing magnetic field generated by the stator.
  • IPM motor interior permanent magnet motor
  • the rotor for an interior permanent magnet motor (IPM motor) which has a structure in which a plurality of magnets are inserted into a rotor core made by layering thin electrical steel sheets, is a representative type of rotor.
  • a magnet is press fitted into a slot formed in the rotor core. Since the rotor is a high-speed rotating part, the magnet may be displaced from its original position due to the rotation. Therefore, in order to fix the magnet to the rotor core, a method of fixing the magnet by using an adhesive or molding the magnet with resin is widely used.
  • Korean Patent Laid-Open No. 10-2008-0092474 and Japanese Patent Laid-Open No. 2010-187535 disclose an apparatus for molding a magnet in the rotor core with resin by injecting molten resin into an upper part of the rotor core into which the magnet is inserted. According to such prior art, it is necessary to melt a plurality of tablets for resin injection into each slot of the rotor core. Since the gap between each tablet is large, it is difficult to intensively heat the tablet when heating the tablet, and thus production efficiency decreases.
  • the molten resin injected from the upper part flows down by gravity and wraps around the magnet. In this way, part of the resin molding may be made non-uniformly, which may lead to a decrease in product quality.
  • the present inventor suggests an apparatus for manufacturing a rotor core with improved productivity and product quality by automating the process of inserting a magnet into a rotor core and the process of molding the periphery of the magnet with resin.
  • the apparatus for manufacturing a rotor core is characterized by comprising a molding part 1 comprising a molding unit 10 for molding a periphery of a magnet 2000 inserted into a rotor core 1000 with resin; a magnet insertion part 2 installed on one side of the molding part 1, comprising a magnet insertion unit 20 for inserting the magnet 2000 into the rotor core 1000; and a supply part 3 installed on one side of the magnet insertion part 3 and provided with a supply line 31 for supplying the rotor core 1000 and a gate jig 100 on which the rotor core 1000 is mounted.
  • the apparatus may further comprise a discharge part 4 installed on one side of the molding part 1, comprising a discharge line 41 for discharging the rotor core 1000 whose resin molding is completed on the molding part 1.
  • a cooler 42 is installed in the discharge part 4 on an upper part of the discharge line 41.
  • the apparatus may further comprise an inspection unit 5 having an inspection table 51 installed on one side of the discharge part 4.
  • a heater 32 may be installed in the supply part 3 on an upper part of the supply line 31.
  • the molding unit 10 may comprise an upper mold 11, and a lower mold 12 installed on a fixed frame 13 to move vertically from a lower part of the upper mold 11, the upper mold 11 may comprise an upper moving plate 115 moving upward in contact with the lower mold 12 when the lower mold 12 ascends, a gate jig 100 to which a rotor core 1000 is coupled may be mounted in the center part of the upper moving plate 115, the lower mold 12 may comprise a runner block 123 which presses a lower surface of the gate jig 100 when the lower mold 12 ascends, and a plurality of tablet insertion parts 123A into which a tablet 3000A is inserted may be formed in the center part of the runner block 123 and a channel 123B may be formed on an upper surface of the runner block 123, so that the resin in which the tablet 3000A is molten is injected into the slot of the rotor core 1000 along the channel 123B.
  • a pressure plate 114 coupled to a release shaft 113 may be installed in the center of an upper fixing plate 111, an upper surface of the pressure plate 114 may be supported by a plurality of buffer members 114A, and a lower surface of the pressure plate 114 may be pressed by an upper surface of the rotor core 1000 when the lower mold 12 is at the top dead center.
  • the gate jig 100 may comprise a jig plate 101 and a central protrusion 102 formed to protrude upward from the center of the jig plate 101, and a plurality of injection holes 101A may be formed in the jig plate 101 at positions corresponding to the channel 123B.
  • a plunger 126 may be installed at a lower part of the tablet insertion part 123A, and the plunger 126 may be installed in a plunger holder 127 moving vertically.
  • a plurality of magnet push pins 123C operating vertically at the position of the channel 123B may be installed in the runner block 123.
  • a plurality of ejector pins 123D operating vertically at the position of the channel 123B may be installed in the runner block 123.
  • the present invention has an effect of providing an apparatus for manufacturing a rotor core capable of efficiently performing the process of inserting a magnet into a rotor core and molding the same with resin, improving product quality by uniformly injecting the molten resin into the rotor core, and improving production efficiency by intensively inserting a plurality of tablets for injecting the molten resin.
  • Fig. 1 is a perspective view illustrating a structure in which a magnet is inserted into a rotor core
  • Fig. 2 is a perspective view illustrating a rotor core having a magnet fixed with resin molding
  • Fig. 3 is a schematic plan view illustrating the layout of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 4 is a schematic front view illustrating a molding unit of the apparatus for manufacturing a rotor core according to the present invention, which illustrates a state in which a lower mold is positioned at the bottom dead center;
  • Fig. 5 is a schematic front view illustrating a molding unit of the apparatus for manufacturing a rotor core according to the present invention, which illustrates a state in which a lower mold is positioned at the top dead center;
  • Fig. 6 is a plan view illustrating a gate jig of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 7 is a plan view illustrating a runner block installed in the molding unit of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 8 is a schematic plan view illustrating a magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 9 is a perspective view illustrating a picker installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention.
  • Fig. 10 is a plan view illustrating a first magnet guide jig installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 11 is a plan view illustrating a second magnet guide jig installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention
  • Fig. 12 is a plan view illustrating a magnet feeder installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention.
  • Fig. 13 is a conceptual view illustrating the operation of the magnet feeder installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention.
  • Fig. 1 is a perspective view illustrating a structure in which a magnet 2000 is inserted into a rotor core 1000.
  • Fig. 2 is a perspective view illustrating a rotor core 1000 having a magnet 2000 fixed with resin molding 3000. Referring to Figs. 1 and 2 together, a magnet 2000 is inserted into a rotor core 1000, and when a periphery of the magnet 2000 is molded with resin, it has a shape in which the molding part 3000 wraps around the magnet 2000 as shown in Fig. 2.
  • a magnet 2000 is inserted into a slot set 1100 formed by vertically penetrating the rotor core 1000.
  • the magnet 2000 is exemplified to have two shapes, a first magnet 2000A and a second magnet 2000B, there may be one or three or more types of magnets.
  • the slot set 1100 is illustrated as a set of eight, but is not necessarily limited thereto.
  • One slot set 1100 is illustrated as comprising a first slot 1100A and a second slot 1100B to have two types of magnets inserted, but the slot set is not necessarily limited thereto, and is formed to correspond to the type of magnet described above.
  • the first slot 1100A is a pair of slots symmetrical at a predetermined angle, and a first magnet 2000A is inserted into the first slot 1100A.
  • the second slot 1100B is a pair of slots symmetrical at a predetermined angle, and a second magnet 2000B is inserted into the second slot 1100B.
  • a step is generated between the magnet and the upper and lower ends of the slot, and molten resin is filled in the step portion to form a resin molding 3000.
  • a passage penetrating vertically is formed on both ends of the magnet inserted into the slot, and molten resin is filled in this portion.
  • the resin preferably, a thermosetting epoxy-based resin is used.
  • Fig. 3 is a schematic plan view illustrating the layout of the apparatus for manufacturing a rotor core according to the present invention.
  • the apparatus for manufacturing a rotor core according to the present invention comprises a molding part 1, a magnet mounting part 2, a supply part 3, a discharge part 4, an inspection part 5 and a transfer part 6.
  • the molding part 1 comprises a molding unit 10 for molding the periphery of the magnet 2000 by melting a plastic resin on the rotor core 1000 on which the magnet 2000 is mounted.
  • Fig. 3 illustrates two molding units 10, the number of molding units is not limited thereto and there may be one or more than one.
  • a magnet mounting part 2 is installed on one side of the molding part 1.
  • vertical direction means +z and -z directions in Fig. 3, respectively, and "one side” or “horizontal direction” means any one direction on the xy plane in Fig. 3.
  • the magnet mounting part 2 is installed on one side of the molding part 1, and comprises a magnet mounting unit 20 for inserting a magnet 2000 into the slot 1100 of a rotor core 1000.
  • the magnet mounting unit 20 comprises a fixed table 21, a rotating table 22 installed at a lower part of the fixed table 21 and having a rotor core 1000 mounted thereon to rotate by a predetermined pitch, a first magnet feeder 23 and a second magnet feeder 24 installed on one side of the rotating table 22 to supply the magnet 2000.
  • the supply part 3 is installed on one side of the magnet mounting part 2, and supplies the rotor core 1000 to be mounted on the magnet mounting unit 20 of the magnet mounting part 2.
  • the supply part 3 comprises a supply line 31 for transferring a plurality of rotor cores 1000 in the horizontal direction and a heater 32 installed on an upper part of the supply line 31.
  • Fig. 3 illustrates two supply lines 31, the number of supply lines is not necessarily limited to two, and two or more lines may be installed as needed.
  • Each supply line 31 may be a conveyor belt moving in the horizontal direction.
  • the supply line 31 is installed to pass through a lower part of the heater 32.
  • the heater 31 heats the rotor core 1000 transferred in the horizontal direction in the supply line 31.
  • the rotor core 1000 is mounted with a magnet 2000 in the magnet mounting part 2 and the periphery of the magnet 2000 mounted in the molding unit 10 is molded with resin. In order for the molten resin to be smoothly molded, the rotor core 1000 must be supplied to the molding unit 10 in a heated state.
  • the heating method is not limited to a specific heating method such as hot air heating or high-frequency heating.
  • the discharge unit 4 is installed on one side of the molding part 1 to discharge the rotor core 1000 formed with a molding part 3000 by completing resin molding in the molding part 1.
  • the discharge line 41 in the discharge part 4 transfers the rotor core 1000 in the horizontal direction to the inspection part 5.
  • the discharge line 41 is preferably a conveyor, and the discharge line 41 is installed to pass through the cooler 42.
  • the cooler 42 is installed to cool the heated rotor core 1000.
  • the rotor core 1000 which passes through the cooler 42 in the discharge line 41 is transferred to the inspection part 5.
  • the inspection unit 5 is installed on one side of the discharge unit 4 and performs an external inspection on the rotor core 1000 which is cooled and discharged from the discharge unit 4 at the inspection table 51 to distinguish and take out non-defective products to a non-defective product line 52 and defective products to a defective product line 53.
  • the transfer part 6 is installed on one side of the molding unit 10, and comprises a transfer robot 60 having a robot arm 61 and a gripper 62.
  • the transfer robot 60 can move in the horizontal direction, and the robot arm 61 can move the gripper 62 in the horizontal direction or in the vertical direction.
  • the gripper 62 serves to grip the rotor core 1000 and transfer the same to an adjacent device.
  • the gripper grips the rotor core 1000 heated and supplied by the supply part 3 and transfers the same to the rotating table 22 of the magnet mounting part 2.
  • the transfer robot 60 may pick up the rotor core 1000 from the magnet mounting part 2 and transfer the same to the molding unit 10.
  • the rotor core 1000 molded in the molding unit 10 may be transferred to the discharge part 4 by the transfer robot 60, and the rotor core 1000 cooled in the discharge part 4 may be transferred to the inspection table 61 of the inspection part 6 by the transfer robot 60.
  • two or more transfer robots 60 may be installed.
  • the transfer part 6 is positioned in the horizontal direction in the center part of the molding part 1, the magnet mounting part 2, the supply part 3, the discharge part 4 and the inspection part 5.
  • Fig. 4 is a schematic front view illustrating a molding unit 10 of the rotor core according to the present invention, which illustrates a state in which a lower mold 12 is positioned at the bottom dead center.
  • Fig. 5 is a schematic front view illustrating a molding unit 10 of the apparatus for manufacturing a rotor core according to the present invention, which illustrates a state in which a lower mold 12 is positioned at the top dead center.
  • the molding unit 10 of the apparatus for manufacturing a rotor core comprises an upper mold 11, a lower mold 12, and a fixed frame 13.
  • the upper mold 11 is fixedly installed on an upper frame 132 of the fixed frame 13.
  • the lower mold 12 is installed on a lower frame 131 side of the fixed frame 13, but the lower mold 12 is not fixed and is installed to move upward and downward.
  • Fig. 4 illustrates a state in which the lower mold 12 is positioned at the bottom dead center
  • Fig. 5 illustrates a state in which the lower mold 12 is positioned at the top dead center.
  • the fixed frame 13 comprises a lower frame 131 and an upper frame 132.
  • the lower frame 131 and the upper frame 132 are installed being fixed to each other by a side frame (not shown).
  • the lower mold 12 is configured to move vertically by a guide post (not shown) installed on the fixed frame 13 in the vertical direction, and the vertical movement of the lower mold 12 is carried out in the same manner as a press mold.
  • the upper mold 11 is fixedly installed on the upper frame 132.
  • the upper mold 11 comprises an upper fixing plate 111 fixedly installed on the upper frame 132, a plurality of upper guide posts 112 installed to protrude downward from the upper fixing plate 111, a release shaft 113 installed in the center part of the upper fixing plate 111 to extend downward and contract, a pressure plate 114 fixedly installed on a lower end of the release shaft 113, and a plurality of buffer members 114A for granting an elastic force to an upper surface of the pressure plate 114.
  • the upper guide post 112 is provided with an upper moving plate 115 guided by the upper guide post 112 to move vertically.
  • the number of upper guide posts 112 is not particularly limited, it is preferable to install four upper guide posts for accurate guiding.
  • a first upper guide hole 115A is installed on the upper moving plate 115 at a position corresponding to the upper guide post 112, and an upper guide post 112 is inserted into the first upper guide hole 115A, so that the upper moving plate 115 is coupled to freely move up and down.
  • An upper guide stopper 112A is installed at a lower end of the upper guide post 112 to support the lowermost position of the upper moving plate 115.
  • the upper guide post 112 is installed so that the upper moving plate 115 can be pushed up by the lower mold 12 when the lower mold 12 ascending comes into contact with the upper moving plate 115. Also, when the lower mold 12 descends from the top dead center, the upper moving plate 115 descends together with the lower mold 12, but descends until the lower part of the upper moving plate 115 is stopped by the guide post stopper 112A.
  • a second upper guide hole 115B is formed in the upper moving plate 115 at a position corresponding to the lower guide post 125 so that a lower guide post 125 can be inserted and guided when the lower mold 20 ascends.
  • a central space 115C which is a space for inserting the runner block 123 installed in the lower mold 12, is formed in the center part of the upper moving plate 115, and a step part 115D for a jig plate 101 of the gate jig 100 to be mounted is formed along the upper part of the central space 115C.
  • the lower mold 12 is installed on the fixed frame 13 to be vertically movable.
  • the lower mold 12 comprises a lower plate 120, a main body 120A installed on the lower plate 120 to be installed on various controllers or parts, and a base plate 121 installed on an upper part of the main body 120.
  • a lower guide hole 121A is formed in the base plate 121 at a position corresponding to the position of the upper guide post 112.
  • a support block 122 is installed on an upper part of the base plate 121, and a runner block 123 is installed on an upper part of the support block 122.
  • the support block 122 and the runner block 123 may be a single member.
  • a stopper block 124 is installed on an upper part of the base plate 121.
  • the stopper block 124 serves to push up the upper moving plate 115 by bringing the upper part of the stopper block 124 into contact with the lower end surface of the upper moving plate 115 when the lower mold 12 ascends.
  • a lower guide post 125 is installed to protrude upward from the base plate 121 at a position corresponding to the second upper guide hole 115B of the upper moving plate 115.
  • the lower guide post 125 is inserted and guided into the second upper guide hole 115B when the lower mold 12 ascends.
  • the runner block 123 melts the tablet 3000A, which is a solid resin, so that it can be injected into the slot of the rotor core 1000.
  • the upper surface of the runner block 123 comes into close contact with the lower surface of the jig plate 101.
  • a plurality of tablet insertion parts 123A which are open upward to insert the tablet 3000A are formed in the center part of the runner block 123.
  • the number of tablet inserts 123A is not particularly limited and may vary depending on the capacity of the tablet or the size of the rotor core, but in general, it is preferable to form three or four tablet insertion parts 123A in the center part of the runner block 123.
  • a channel 123B communicating with the periphery of the tablet insertion part 123A is formed on an upper surface of the runner block 123.
  • the channel 123B is a path through which the molten liquid resin of the tablet 3000A flows, and the shape thereof may be referred to as shown in Fig. 7.
  • a plurality of magnet push pins 123C are installed on the channel 123B to push up a lower part of the magnet 2000 inserted into the rotor core 1000, and a plurality of ejector pins 123D for removing the resin (scrap) remaining in the channel 123B to be cured are installed after the injection of the molten resin is completed.
  • the magnet push pin 123C pushes the magnet 2000 inserted into the slot upward to form a step so that the resin can be introduced into the upper and lower parts of the magnet 2000 and the slot 1100.
  • the magnet push pin 123C and the ejector pin 123D are operated to move vertically, and operating means such as an actuator, a cylinder, or a servo motor to this end are installed in the main body 120A.
  • the upper surface of the runner block 123 presses the lower surface of the jig plate 101.
  • the upper surface of the rotor core 1000 mounted on the jig plate 101 presses the lower surface of the pressure plate 114, and the elastic force of the buffer member 114A allows the upper surface of the rotor core 100 to apply a uniform elastic force to the surface by the pressure plate 114.
  • the plunger 126 is installed in the plunger holder 127 and the plunger holder 127 is installed to move upward and downward.
  • the vertical movement of the plunger holder 127 is operated by a separate driving means (not shown) such as a motor or a cylinder installed in the main body 120A. Since the vertical movement of the plunger holder 127 requires precise movement and strong pressure at the same time, it is preferable to use a driving means such as a servo motor or a gear.
  • a plunger stopper 128 is fixedly installed to a lower part of the plunger holder 127 to prevent the plunger holder 127 from descending below a predetermined height.
  • Fig. 6 is a plan view illustrating a gate jig 100 of the molding unit 10 of the apparatus for manufacturing a rotor core according to the present invention.
  • the gate jig 100 of the present invention comprises a jig plate 101, a central protrusion 102 formed to protrude upward from the center of the jig plate 101, and a pair of handles 103 formed on one side of the jig plate 101.
  • the rotor core 1000 has a circular hole penetrating vertically in the center. This part is fit into the central protrusion 102 of the jig plate 101 so that the rotor core 1000 is mounted on the jig plate 101. Since the process is performed while the rotor core 1000 or the jig plate 101 is heated to a predetermined temperature, a robot arm (not shown) grips a pair of handles 103 to place the jig plate 101 on a step part 115D of the upper moving plate 115.
  • a plurality of injection holes 101A penetrating vertically are formed in the jig plate 101 at a position corresponding to the channel 123B of the runner block 123, so that the molten resin flows into the channel 123B and the slot 1100.
  • Fig. 7 is a plan view illustrating a runner block 123 of the molding unit 10 of the apparatus for manufacturing a rotor core according to the present invention.
  • the runner block 123 of the present invention is provided with a plurality of tablet insertion parts 123A in the center part.
  • Fig. 7 illustrates four tablet insertion parts 123A, the number of tablet insertion parts is not limited thereto.
  • the channel 123B formed as a groove on the upper surface of the runner block 123 is formed to communicate with each slot 1100 of the rotor core 1000.
  • a plurality of magnet push pins 123C and ejector pins 123D are positioned in the channel 123B to allow vertical movement.
  • Fig. 8 is a schematic plan view illustrating a magnet mounting unit 20 of the apparatus for manufacturing a rotor core according to the present invention.
  • the magnet mounting unit 20 of the present invention comprises a fixed table 21, a rotating table 22 installed at a lower part of the fixed table 21 and rotating by a predetermined pitch, a first magnet feeder 23 installed on one side of the rotating table 22, a second magnet feeder 24 installed on one side of the rotating table 22, a first picker 25 installed on one side of the first magnet feeder 23, and a second picker 26 installed on one side of the second magnet feeder 24.
  • a plurality of gate jig mounting parts 221 for positioning the gate jig 100 on which the rotor core 1000 is mounted are formed in the rotating table 22 at positions symmetrical to each other.
  • four gate jig mounting parts 221 are installed at symmetrical positions. Assuming that the distance between two adjacent gate jigs is one pitch, in Fig. 8, one pitch is 90 degrees, and the rotating table 22 operates to rotate by 90 degrees in one direction.
  • the number of gate jig mounting parts 221 is not limited to four and may be set to various numbers.
  • the first magnet 2000A supplied from the first magnet feeder 23 is inserted into a first slot 1100A of the rotor core 1000 by the operation of the first picker 25.
  • a first magnet guide jig 211 is installed on the fixed table 21 to be positioned on an upper part of the rotor core 1000 to guide the insertion of the first magnet 2000A.
  • the first magnet guide jig 211 is provided with a first magnet guide hole 211A corresponding to the insertion position so that the magnet is guided to the position where the first magnet is inserted.
  • the rotating table 22 rotates by one pitch, and the gate jig 100 is positioned on one side of the second magnet feeder 24.
  • the second magnet 2000B supplied from the second magnet feeder 24 is inserted into the second slot 1100B of the rotor core 1000 by the operation of the second picker 26.
  • a second magnet guide jig 212 is installed on the fixed table 21 to be positioned on an upper part of the rotor core 1000 to guide the insertion of the second magnet 2000B.
  • the second magnet guide jig 211 is provided with a second magnet guide hole 212A corresponding to the insertion position so that the magnet is guided to the position where the second magnet is inserted.
  • Fig. 9 is a perspective view illustrating a first picker 25 installed in the magnet mounting unit of the apparatus for manufacturing a rotor core according to the present invention. Since the first picker 25 and the second picker 26 have the same structure, reference numerals related to the second picker 26 are indicated in parentheses.
  • the first picker 25 of the present invention comprises a first picker head 251, a first over arm 252, a first extension arm 253, and a first base arm 254.
  • the first picker head 251 has a plurality of first holding rods 251A extending downward, and a first magnet gripper 251B is installed at a lower end of the first holding rod 251A.
  • the first magnet gripper 251B operates like a pair of fingers to pick up or put down the first magnet 2000A.
  • the first picker head 251 is movable in vertical and horizontal directions by the operation of the first over arm 252 , the first extension arm 253 , and the first base arm 254. Therefore, the first picker head 25 shown in Fig. 9 can pick up and transfer four first magnets 2000A at the same time.
  • the number of first magnet grippers 251B may be four as shown in Fig. 9, but is not necessarily limited thereto, and the first magnet grippers may be installed in an appropriate number as needed.
  • the first extension arm 253 is installed at a distal end of the first over arm 252, and since it extends or contracts vertically, it allows the first picker head 251 to operate vertically.
  • the other end of the first over arm 252 is installed on an upper end of the first base arm 254 and the first base arm 254 is installed on the main body of the magnet mounting unit 20.
  • the first base arm 254 and the first over arm 252 operate to move the first picker head 251 in the horizontal direction. Therefore, the first picker head 251 is movable in the vertical and horizontal directions (the xyz directions in Fig. 9).
  • the first picker head 251 After the first picker head 251 is positioned in the first magnet feeder 23 and picks up the first magnet 2000A, the first picker head 251 is to be positioned on an upper part of the first magnet guide jig 211 of the upper part of the rotor core 1000, and when the first magnet 2000A is placed in the first picker head 251, the first magnet 2000A passing through the first magnet guide 211 is inserted into the first slot 1100A of the rotor core 1000. At this time, the first magnet pusher 251C extends downward and pushes the first magnet 2000A so that the first magnet 2000A is completely inserted into the first slot 1100A. The first magnet pusher 251C returns to its original position, and the insertion of the first magnet 2000A is completed.
  • the rotating table 22 rotates by one pitch, and the rotor core 1000 into which the first magnet 2000A is inserted is to be positioned on one side of the second magnet feeder 24.
  • the second magnet 2000B is inserted by the second picker 26 in the same process as the insertion of the first magnet 2000A.
  • the second picker 26 of the present invention comprises a second picker head 261, a second over arm 262, a second extension arm 263, and a second base arm 264.
  • the second picker head 261 has a plurality of second holding rods 262A extending downward, and a second magnet gripper 261B is installed at a lower end of the second holding rod 261A.
  • the second magnet gripper 261B operates like a pair of fingers to pick up or put down the second magnet 2000B.
  • the second picker head 261 is movable in vertical and horizontal directions by the operation of the second over arm 262, the second extension arm 263, and the second base arm 264. Therefore, the second picker head 26 shown in Fig. 9 can pick up and transfer four second magnets 2000B at the same time.
  • the number of second magnet grippers 261B may be four as shown in Fig. 9, but is not limited thereto, and the second magnet grippers may be installed in an appropriate number as needed.
  • the second extension arm 263 is installed at a distal end of the second over arm 262, and since it extends or contracts vertically, it allows the second picker head 261 to operate vertically.
  • the other end of the second over arm 262 is installed on an upper end of the second base arm 264 and the second base arm 264 is installed on the main body of the magnet mounting unit 20.
  • the second base arm 264 and the second over arm 262 operate to move the second picker head 261 in the horizontal direction. Therefore, the second picker head 261 is movable in the vertical and horizontal directions (the xyz direction in Fig. 9).
  • the second picker head 261 After the second picker head 261 is positioned in the second magnet feeder 24 and picks up the second magnet 2000B, the second picker head 261 is to be positioned on an upper part of the second magnet guide jig 212 of the upper part of the rotor core 1000, and when the second magnet 2000B is placed in the second picker head 261, the second magnet 2000B passing through the second magnet guide 212 is inserted into the second slot 1100B of the rotor core 1000. At this time, the second magnet pusher 261C extends downward and pushes the second magnet 2000B so that the second magnet 2000B is completely inserted into the second slot 1100B. The second magnet pusher 261C returns to its original position, and the insertion of the second magnet 2000B is completed.
  • Fig. 10 is a plan view illustrating a first magnet guide jig 211 installed in the magnet mounting unit 20 of the apparatus for manufacturing a rotor core according to the present invention.
  • the first magnet guide jig 211 is installed on the fixed table 21, and the plurality of first magnet guide holes 211A in the first magnet guide jig 211 are formed in correspondence to the position of the first slot 1100A of the rotor core 1000.
  • the first magnet 2000A passes through the first magnet guide hole 211A by the first picker 25 and is inserted into the first slot 1100A of the rotor core 1000.
  • Fig. 11 is a plan view illustrating a second magnet guide jig 212 installed in the magnet mounting unit 20 of the apparatus for manufacturing a rotor core according to the present invention.
  • the second magnet guide jig 212 is installed on the fixed table 21, and the plurality of second magnet guide holes 212A in the second magnet guide jig 212 are formed in correspondence to the position of the second slot 1100B of the rotor core 1000.
  • the second magnet 2000B passes through the second magnet guide hole 212A by the second picker 26 and is inserted into the second slot 1100B of the rotor core 1000.
  • Fig. 12 is a plan view illustrating a first magnet feeder 23 and a second magnet feeder 24 installed in the magnet mounting unit 20 of the apparatus for manufacturing a rotor core according to the present invention.
  • Fig. 13 is a conceptual diagram illustrating the operation of the first magnet feeder 23 and the second magnet feeder 24.
  • the first magnet feeder 23 of the present invention comprises a first magnet holding jig 231, a first magnet supplier 232, a first magnet push cylinder 233, a first magnet push rod 234, a first lifting means 235, and a first lifting rod 236.
  • the first magnet holding jig 231 is installed to be rotatable by 180 degrees, and two pairs of first magnet insertion holes 231A are formed at positions symmetrical to each other with respect to the planar center of the first magnet holding jig 231.
  • the first magnet supplier 232 is installed in two lines on one side of the first magnet holding jig 231, and on each line, a plurality of first magnets 2000A are continuously supplied one by one toward the first magnet holding jig 231.
  • a pair of first magnet push cylinders 233 are installed on one side of the first magnet supplier 232, respectively, and operate the first magnet push rod 234 to push the first magnet 2000A supplied to the first magnet supplier 232 and position the same at a lower part of the first magnet insertion hole 231A.
  • First lifting rods 236 operating vertically by the first lifting means 235 are installed, respectively, at a lower part of the pair of first magnet insertion holes 231A.
  • the first magnet 2000A pushed and moved by the first magnet push rod 234 is moved from the first magnet supplier 232 to the first lifting rod 236 as shown in (a) of Fig. 13.
  • the first lifting rod 236 ascends, as shown in (b) of Fig. 13, the first magnet 2000A is lifted and positioned on an upper part of the first magnet insertion hole 231A. Thereafter, the first lifting rod 236 descends again and the first magnet 2000A is positioned on an upper part of the first magnet holding jig 231.
  • the first magnet holding jig 231 rotates 180 degrees in the horizontal direction, and then a pair of first magnets 2000A is positioned on an upper part of the first magnet holding jig 231 by the operation of the first magnet push rod 234 and the first lifting rod 236.
  • the first picker 25 picks up four first magnets 2000A, moves them into the first slots 1100A of the rotor core 1000 and inserts the same.
  • the second magnet feeder 24 of the present invention comprises a second magnet holding jig 241, a second magnet supplier 242, a second magnet push cylinder 243, a second magnet push rod 244, a second lifting means 245, and a second lifting rod 246.
  • the second magnet holding jig 241 is installed to be rotatable by 180 degrees, and two pairs of second magnet insertion holes 241A are formed at positions symmetrical to each other with respect to the planar center of the second magnet holding jig 241.
  • the second magnet supplier 242 is installed in two lines on one side of the second magnet holding jig 241, and on each line, a plurality of second magnets 2000B are continuously supplied one by one toward the second magnet holding jig 241.
  • a pair of second magnet push cylinders 243 are installed on one side of the second magnet supplier 242, respectively, and operate the second magnet push rod 244 to push the second magnet 2000B supplied to the second magnet supplier 242 and position the same at a lower part of the second magnet insertion hole 241A.
  • Second lifting rods 246 operating vertically by the second lifting means 245 are installed, respectively, at a lower part of the pair of magnet insertion holes 241A.
  • the second magnet 2000B pushed and moved by the second magnet push rod 244 is moved from the second magnet supplier 242 to the second lifting rod 246 as shown in (a) of Fig. 13.
  • the second lifting rod 246 ascends, as shown in (b) of Fig. 13, the second magnet 2000B is lifted and positioned on an upper part of the second magnet insertion hole 241A. Thereafter, the second lifting rod 246 descends again and the second magnet 2000B is positioned on an upper part of the second magnet holding jig 241.
  • the second magnet holding jig 241 rotates 180 degrees in the horizontal direction, and then a pair of second magnets 2000B is positioned on an upper part of the second magnet holding jig 241 by the operation of the second magnet push rod 244 and the second lifting rod 246.
  • the second picker 26 picks up four second magnets 2000B, moves them into the second slots 1100B of the rotor core 1000 and inserts the same.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'appareil de fabrication d'un noyau de rotor selon la présente invention est caractérisé en ce qu'il comprend une partie de moulage 1 comprenant une unité de moulage 10 pour mouler une périphérie d'un aimant 2000 inséré dans un noyau de rotor 1000 avec de la résine ; une partie d'insertion d'aimant 2 installée sur un côté de la partie de moulage 1, comprenant une unité d'insertion d'aimant 20 pour insérer l'aimant 2000 dans le noyau de rotor 1000 ; et une partie d'alimentation 3 installée sur un côté de la partie d'insertion d'aimant 3 et pourvue d'une ligne d'alimentation 31 pour fournir le noyau de rotor 1000 et un gabarit de grille 100 sur lequel est monté le noyau de rotor 1000.
PCT/KR2021/017634 2021-09-06 2021-11-26 Appareil de fabrication de noyau de rotor WO2023033252A1 (fr)

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KR1020210118277A KR20230035816A (ko) 2021-09-06 2021-09-06 로터 코어 제조 장치
KR10-2021-0118277 2021-09-06

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WO2023033252A1 true WO2023033252A1 (fr) 2023-03-09

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CN116455157A (zh) * 2023-06-13 2023-07-18 广州市创智机电设备有限公司 电机装配设备的转子磁钢压装系统以及电机装配设备

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KR102645008B1 (ko) * 2023-07-07 2024-03-08 주식회사 인텍오토메이션 마그넷 삽입기
KR102645002B1 (ko) * 2023-07-07 2024-03-08 주식회사 인텍오토메이션 마그넷 삽입 자동화 라인 시스템

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WO2020095349A1 (fr) * 2018-11-05 2020-05-14 黒田精工株式会社 Dispositif et procédé de production d'un noyau à aimant intégré
JPWO2020075275A1 (ja) * 2018-10-11 2021-02-15 黒田精工株式会社 ロータコア保持治具、磁石埋込み型コアの製造装置及び製造方法

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KR20130006380U (ko) * 2012-04-26 2013-11-05 세메스 주식회사 반도체 소자 몰딩 장치
JP2015126671A (ja) * 2013-12-27 2015-07-06 トヨタ自動車株式会社 回転子積層鉄心の製造方法
JP2015192576A (ja) * 2014-03-28 2015-11-02 本田技研工業株式会社 ロータ製造装置およびロータ製造方法
JP2016096698A (ja) * 2014-11-17 2016-05-26 トヨタ自動車株式会社 ロータ製造方法
JP2018088760A (ja) * 2016-11-29 2018-06-07 Ｎｄｆｅｂ株式会社 マグネット挿入機
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CN116455157A (zh) * 2023-06-13 2023-07-18 广州市创智机电设备有限公司 电机装配设备的转子磁钢压装系统以及电机装配设备
CN116455157B (zh) * 2023-06-13 2023-09-01 广州市创智机电设备有限公司 电机装配设备的转子磁钢压装系统以及电机装配设备

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