WO2023074938A1 - Appareil de fabrication de noyau et procédé de fabrication de noyau - Google Patents

Appareil de fabrication de noyau et procédé de fabrication de noyau Download PDF

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Publication number
WO2023074938A1
WO2023074938A1 PCT/KR2021/015264 KR2021015264W WO2023074938A1 WO 2023074938 A1 WO2023074938 A1 WO 2023074938A1 KR 2021015264 W KR2021015264 W KR 2021015264W WO 2023074938 A1 WO2023074938 A1 WO 2023074938A1
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WIPO (PCT)
Prior art keywords
core
heater
members
lamina
laminated
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Application number
PCT/KR2021/015264
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English (en)
Korean (ko)
Inventor
우덕균
지정규
권재상
홍이경
이정일
최성진
이야곱
강석조
남기택
Original Assignee
(주)포스코에스피에스
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Application filed by (주)포스코에스피에스 filed Critical (주)포스코에스피에스
Publication of WO2023074938A1 publication Critical patent/WO2023074938A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
    • B32B38/1833—Positioning, e.g. registration or centering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications

Definitions

  • the present invention relates to a core manufacturing apparatus and manufacturing method for manufacturing a core of a laminated structure by an adhesive method, and more particularly, by bonding the interfaces of laminated laminar members (laminar members) for the iron core in an adhesive manner. It relates to a core manufacturing apparatus and manufacturing method for manufacturing a core (laminated core) of a laminated structure.
  • a laminated core refers to a core of a laminated structure manufactured by integrating a plurality of thin plates, that is, laminar members, and, for example, a plurality of laminae obtained by punching a metal strip. It means a core structure in which members are integrated into a laminated structure.
  • Such laminated cores are used as cores of various devices such as rotating devices such as motors, transformers, or iron cores for ignition systems, and various methods for manufacturing them are known.
  • the core of the laminated structure that is, the above-mentioned laminated core is manufactured. It can be.
  • a tab fixing method using an interlock tab As a method of integrating the laminar members, a tab fixing method using an interlock tab, a welding fixing method using, for example, laser welding, a rivet fixing method, and the like are known.
  • Examples of the tab fixing method are disclosed in patent documents such as Korean Patent Publication Nos. 10-2008-0067426 and 10-2008-0067428. There is a limit to the embossing process for forming the tab.
  • the cost can be reduced compared to laser welding, and the adhesive fixing method is known as a technology capable of responding to thinning of a steel plate.
  • the laminator (Laminator), more specifically, the internal space (lamination hole) of the mold (lower mold) in a laminated state, the interface (boundary surface) of the lamina members is bonded.
  • a plurality of sheets can be integrated by
  • the laminator includes a squeeze member (squeeze ring of Japanese Unexamined Patent Publication No. 2009-297758) for alignment/lamination of the lamina members, and the laminator is configured at a predetermined timing ( Timing) after rotating the lamina members by a predetermined angle (index rotation), a new lamina member is supplied (index rotation lamination).
  • a squeeze member squeeze ring of Japanese Unexamined Patent Publication No. 2009-297758
  • the present invention provides a core manufacturing apparatus and a core manufacturing method using the same capable of heating the lamina members together from the outside and the inside in order to bond the lamina members forming the core of the laminated structure by an adhesive method. There is a purpose.
  • One aspect of the present invention is a core manufacturing apparatus for forming a laminated core by integrating a plurality of lamina members by an adhesive method: having a lamination hole formed through in the vertical direction so as to pass the lamina members in a laminated state,
  • a laminator including a first heater for heating the lamina members passing through the lamination hole from the outside of the lamina members so that the lamina members are integrated by the adhesive present at the interface of the lamina members (Limanator); a core support movably provided at a lower side of the laminated hole to support the laminated core discharged from the laminated hole; And a second heater capable of entering the inside of the lamination hole through the lower end of the lamination hole and moving vertically through the core support to heat the lamina members inside the lamina members
  • Core manufacturing apparatus including provides
  • the core support may generate heat for heating the lamina members.
  • the second heater may be an inner guide that is inserted into the laminar members to align the lamina members.
  • the second heater When the lamina members into which the second heater is inserted rotate, it is possible to rotate at the same angle together with the lamina members into which the second heater is inserted in order to induce an integral behavior of the lamina members, forming the laminated cores Slip can be prevented from occurring at the adhesive interface of the lamina members.
  • the upper end of the second heater may descend below the upper surface of the core support, and thus, when the core is taken out, interference by the second heater may be excluded and the descending height of the core support may be minimized.
  • the upper end of the second heater is capable of rising to a height equal to or higher than the height of the upper end of the heater;
  • a core engaging portion may be formed on an outer circumferential surface of the second heater so that the second heater catches the lamina members in a rotational direction;
  • the core engaging portion may be engaged with grooves or protrusions formed on the inner circumferential surfaces of the lamina members.
  • the second heater It can move up and down independently with respect to the core support.
  • Another aspect of the present invention is a core manufacturing method for forming a laminated core by integrating a plurality of lamina members by an adhesive method: the lamina members pass through in a laminated state to the adhesive present at the interface of the lamina members Heating the lamina members with a first heater and a second heater for heating the lamina members from outside and inside of the lamina members, respectively, so as to be integrated by; And to take out the laminated core, it provides a core manufacturing method comprising the step of lowering the upper end of the second heater for heating the lamina member below the upper end of the core support supporting the bottom surface of the laminated core.
  • the present invention it is possible to minimize/prevent the occurrence of temperature deviation and adhesive strength deviation for heat curing of adhesive from the edge of the lamina members forming the laminated core to the inside, and Warpage and defects of the laminated core can be minimized/prevented.
  • the progress of an additional core heating process to improve warpage of the laminated core and the resulting additional production cost can be prevented.
  • the bottom of the laminated core can be heated while applying back pressure to the laminated core during extraction of the laminated core, the phenomenon of warping on the bottom surface of the laminated core can be minimized/prevented. .
  • the lamina members forming the laminated core move integrally without relative movement to each other inside the laminated hole, the straightness of the lamina members can be stably managed, and the rotational lamination of the lamina members (index lamination), the perpendicularity of the laminated cores can be precisely managed and the occurrence of thickness deviation can be minimized.
  • the integrated behavior of the lamina members is implemented based on the center hole of the lamina members forming the shaft hole (inner diameter) of the laminated core, a separate structure for guiding the movement of the lamina members is formed. There is no need to do this, and since grooves and/or protrusions formed on the inner circumferential surface (periphery of the center hole) of the lamina members can be set as a standard for the integral behavior of the lamina members in order to firmly couple the axis to the laminated core, the appearance of the finished product It is possible to precisely implement all the behaviors (rotational motion, straight motion) of the laminar member without being limited by.
  • FIG. 1 is a view schematically showing an embodiment of a core manufacturing apparatus according to the present invention
  • FIG. 2 is a diagram illustrating a structure in which the device shown in FIG. 1 is applied to a progressive mold type device;
  • Figure 3 is a view illustrating a method for manufacturing a laminated core by the apparatus shown in Figure 2;
  • FIG. 4 is a diagram illustrating an elevating structure of a core support and a second heater of the device shown in FIG. 1;
  • FIG. 5 is diagrams illustrating a second heater applicable to the device shown in FIG. 1;
  • FIG. 6 is a view illustrating a core support applicable to the device shown in FIG. 1;
  • FIG. 7 is a plan view showing a state in which an embodiment of the second heater shown in FIG. 4 is inserted into an example of a lamina member.
  • FIG. 8 to 10 are diagrams illustrating the operation of the device shown in FIG.
  • FIGS. 1 to 4 is a view schematically showing an embodiment of a core manufacturing apparatus according to the present invention
  • FIG. 2 is a view illustrating a structure in which the apparatus shown in FIG. 1 is applied to a progressive mold type apparatus
  • FIG. 3 is FIG. 2
  • FIG. 4 is a diagram illustrating a lifting structure of a core support and a second heater of the device shown in FIG. 1 .
  • the core manufacturing apparatus is a device for forming a laminated core by integrating a plurality of lamina members (L) by a heat bonding method.
  • the core manufacturing apparatus includes a first heater 110 for externally heating the lamina members (L) and a laminator (100; Laminator) in which the lamina members (L) are laminated. And, a core support 210 supporting the laminated core C discharged from the laminator 100, and a second heater 310 for heating the lamina members L from the inside of the lamina members L ).
  • the laminator 100 has a lamination hole 100a formed through in the vertical direction so as to pass the lamina members L in a laminated state. And the first heater 110, the lamina members passing through the lamination hole (100a) so that the lamina members are integrated in an adhesive method by the adhesive present at the interface of the lamina members, the lamina members It is a component that heats them from the outside.
  • the core support 210 is movably provided on the lower side of the stacking hole 100a to support the stacked core C discharged from the stacking hole 100a, and the second heater 210 ) is capable of entering the inside of the lamination hole 100a through the lower end of the lamination hole 100a to heat the lamina members L from the inside of the lamina members L, and the core support ( 210) is a component that can be moved in the vertical direction through
  • the first heater 110 performs heating on the lamina members at the periphery of the lamina members, and the second heater 210 is inserted into the lamina members to perform heating on the lamina members. Since the heating is performed on the lamina member, it is possible to reduce the occurrence of temperature deviation from the edge portion to the center portion of the lamina member.
  • the core support 210 may be made of a configuration capable of generating heat for heating the lamina members (L).
  • the core support 210 may include a heat source capable of heating the bottom surface of the laminated core (C).
  • the lamina members (L) put into the laminator 100 are heated while passing through the lamination hole 100a in a laminated state, and a plurality of lamina members (L)
  • the laminated core (C) is formed by being integrated by a heat bonding method.
  • the lamina members injected from the upper side of the laminator 100 are heated while passing through the lamination hole 100a in a laminated state, and a plurality of lamina members are heated and cured by the adhesive present at the interface of the lamina members.
  • the lamina members of the intestine are integrated to form the laminated core (C).
  • the stacking hole 100a may be formed through the laminator 100 in the vertical direction as in the present embodiment.
  • the lamina members (L) passing through the stacking hole (100a) from top to bottom are integrated one by one by an adhesive method, thereby sequentially forming the stacked cores (C).
  • the core support 210 is provided movably on the lower side of the laminator 100 so as to sequentially support the laminated cores C discharged from the laminator 100 .
  • the core support 210 moves upward toward the laminator 100 to support the bottom surface of the laminated core C discharged from the laminator 100, and the laminated core C descend while supporting Then, after one laminated core is taken out, it rises again to support the bottom of the next laminated core.
  • the second heater 310 can rise through the core support 210 and protrude upward from the core support 210, and is inserted into the lamina members L so that the lamina The members are heated from the inside.
  • the second heater 310 is provided to be able to move up and down on the core support 200, and enters the inside (lamination hole) of the laminator 100 through the lower end (exit) of the laminator 100. Enter to a predetermined height. The lifting stroke of the second heater 310 may be adjusted.
  • the second heater 310 may be an alignment guide, that is, an inner guide, which is inserted into the lamina members L to align the lamina members.
  • the second heater 310 induces coaxial alignment while the lamina members pass through the lamination hole 100a while forming the laminated core, and furthermore, the lamina members L are integrated. Relative movement between the laminar members (L) by inducing behavior, for example, relative rotation may be prevented.
  • the core support 210 supports the bottom surface (bottom surface) of each laminated core discharged from the stacking hole, and is connected to a lifter 220 that lifts the core support 210 .
  • the second heater 310 is also connected to a lifter 320 that moves the second heater 310 up and down, and can move up and down through the core support 210 .
  • the lifter 220 that lifts the core support 210 is referred to as a first lifter
  • the lifter 320 that lifts the second heater 310 is referred to as a second lifter.
  • the core support 210 is the lower side of the laminator 100 in order to sequentially support the laminated cores C sequentially discharged from the laminator 100, particularly the laminated hole 100a. It is provided so that it can be lifted on.
  • the first lifter 220 is connected to the core support 210 to move the core support 210 up and down, supports the core support 210, for example, a plate for core support, and lifts the core support 210. It is a component that
  • the first lifter 220 may include, but is not limited to, a telescopic cylinder such as a hydraulic or pneumatic cylinder, and for example, an electric actuator using a device such as a linear motor that implements a linear motion.
  • a telescopic cylinder such as a hydraulic or pneumatic cylinder
  • an electric actuator using a device such as a linear motor that implements a linear motion.
  • Various devices capable of realizing elevation of the core support may be applied as the first lifter 220 .
  • the core support 210 may be rotatably provided on top of the first lifter 220, and the lamina members (L) may be provided to manage the perpendicularity and thickness deviation of the laminated cores (C).
  • the lamina members (L) may be provided to manage the perpendicularity and thickness deviation of the laminated cores (C).
  • the core support 210 is rotatably installed on the top of the first lifter 220 .
  • a bearing 230 is installed on the upper side of the first lifter 220, and the core support 210 can rotate freely by the bearing 230, that is, it can be installed as a rotating material. there is.
  • the first lifter 220 includes a first cylinder head 221 and an elastic first cylinder body 222, and the core support 210 is It is rotatably provided at the top by the bearing 230.
  • Functions and types of cylinders and bearings are well known to those skilled in the art (hereinafter referred to as 'ordinary technicians'), so additional description thereof will be omitted.
  • the core support 210 descends while the laminated core C is seated on the upper side of the core support, and when the core support reaches the lower limit position, a core extractor (not shown) such as a conveyor By this, the laminated core can be taken out. After that, the core support 210 rises again to support the bottom surface of the laminated core discharged in the next order.
  • the core support and the first lifter are back pressure devices, and since the function of the core support itself and the take-out mechanism of the laminated core are known in the field of core manufacturing technology, additional description thereof will be omitted.
  • the second heater 310 is provided to be able to move up and down on the lower side of the laminator 100 so as to be able to enter the lamination hole 100a, and the lamination reaches a predetermined height or less within the lamination hole 100a. It is inserted through the members (L).
  • the second heater 310 is configured to enter the inside of the liner 100, and enters the inside of the laminator 100 to a predetermined height through the lower end of the laminator 100, that is, the lower end of the stacking hole. , It performs a heating function while being inserted into the lamina members (L) located below a predetermined height, and furthermore, as an internal guide, the lamina members supplied through the upper end (inlet) of the laminator 100 act integrally as a whole. induce
  • the second lifter 320 is configured to support the second heater 310 in order to move the second heater 310 up and down, and is connected to the second heater 310 to lift the second heater 310. moves up and down.
  • the second lifter 320 may also include a telescopic cylinder such as a hydraulic or pneumatic cylinder, but is not limited thereto, and for example, the core guide, such as an electric actuator using a linear motor, etc.
  • a variety of devices that can implement the lifting of can be applied to the second lifter (320).
  • the second heater 310 descends through the core support 210 to take out the laminated core C, and when the core support 210 reaches the lower limit, the second The upper end of the heater is lowered by the second lifter 320 so as to be located at a level lower than the upper end surface of the core support 210 .
  • the second heater 310 enters the laminated hole 100a again, and the upper end of the second heater 310 is the laminator ( 100) It can rise to a predetermined height inside and perform a heating function inside the laminar members below a certain height.
  • the second heater 310 passes through the core support 210 and moves in the vertical direction, and in the center of the core support 210, there is a floor hole for lifting the second heater 310 ( Hole) is formed through in the vertical direction. That is, as in the examples shown in FIGS. 8 to 10 , the second heater 310 passes through the core support 210 and moves up and down by the second lifter 320 .
  • the second heater 310 is provided to be able to move up and down inside the core support 210, and the second heater 310 is moved by the second lifter 320 to the core support 210. ) can rise above. Therefore, in this embodiment, the second heater 310 has a structure capable of relative vertical movement with respect to the core support 210, and the protruding height of the second heater 310 from the upper side of the core support 210 may be adjusted.
  • the second heater 310 may be rotatably provided above the second lifter 320 .
  • the second heater 310 operates on the lamina inside the laminated hole. It can rotate with members.
  • the second heater 310 is rotatably installed on the top of the second lifter 320 .
  • a bearing 330 is installed on the upper side of the second lifter 320, and the second heater 310 can freely rotate by the bearing 330, that is, it is installed as a rotating material.
  • the bearing 230 supporting rotation of the core support 210 and the bearing 330 supporting rotation of the second heater 310 are separately installed.
  • the bearing 230 supporting rotation of the core support 210 is referred to as a first bearing
  • the bearing 330 supporting rotation of the second heater 310 is referred to as a second bearing.
  • the core support 210 and the second heater 310 have a structure capable of mutually independent rotation.
  • the core support 210 and the second heater 310 rotate at the same angle at the same time, so that the second heater is inserted into the lamina member Integral rotation of the laminar members and other laminar members stacked thereon is made.
  • the second lifter 320 includes a second cylinder head 321 supporting the second heater and a second cylinder body 322 lifting the second cylinder head.
  • the second heater 310 is rotatably provided at an upper end of the second cylinder head 321 by the second bearing 330 .
  • the second heater 310 moves up and down through the core support 210, and the second cylinder body 322 is shown in FIGS. 8 to 10
  • the first cylinder body 222 may be a lifting structure provided to be drawn in and out in the vertical direction. Accordingly, a structure in which the second lifter is combined with the first lifter may be used.
  • the core support and the second heater may be moved up and down by a plurality of cylinders or, more specifically, two or more cylinders.
  • the core support and the second heater may be driven by separate lifting devices.
  • the second heater 310 may include heat sources 310a and 310b for internally heating the lamina members.
  • the heat sources 310a and 310b are devices that convert electrical energy into thermal energy, for example, as shown in FIG. It may include, but is not limited to, an induction heater such as an electric heating wire supplied or a high-frequency induction heating method.
  • the heat source may include a flow path through which a high-temperature fluid flows, and the heat source may have various shapes and methods. can be changed to
  • the second heater 310 may include through holes 311a formed in the body 311 of the second heater to emit heat.
  • through holes 311a through which hot air is discharged may be formed in the body 311 of the second heater.
  • a blower 311b for forced release of heat may be provided inside the body 311 of the second heater, and a heat source 310b for generating heat, for example, an electrothermal heating element may be provided.
  • the second heater 310 may be in the form of dissipating hot air introduced from the outside.
  • the core support 210 may include a heat source 210a for heating the bottom surface of the laminated core.
  • the heat source 210a of the core support is a device that converts electrical energy into thermal energy, for example, as shown in FIG. 6, provided on the body 311 of the second heater and supplied with current by a power line L It may include an induction heater such as an electric heating wire or a high frequency induction heating method.
  • the heat source 210a of the core support may also include a passage through which a high-temperature fluid flows, and the heat source 210a of the core support may also be changed in various forms or methods.
  • the heat source 210a of the core support and the heat sources 310a and 310c of the second heater may be supplied with current through the same power line L or may be supplied with power separately.
  • the electrical connection method between the stationary body and the rotating body for example, the electrical connection method using a rotating electrode itself is a known technology, additional description thereof will be omitted.
  • the present invention may provide an embodiment of a core manufacturing method of forming a laminated core by integrating a plurality of lamina members by an adhesive method.
  • the lamina members are formed on the outside and inside of the lamina members, respectively, so that the lamina members are integrated by the adhesive present at the interface of the lamina members while passing in a laminated state.
  • the core support and the second heater are raised to bring the core support into close contact with the lamina member forming the bottom of the laminated core, and the second heater is entered into the lamina members.
  • the second heater 310 when the lamina members into which the second heater 310 is inserted rotate at a predetermined angle by the laminator 100, the lamina member into which the second heater 310 is inserted. It rotates at the same angle with the lamina members, and prevents slip generation, that is, relative rotation between the lamina members at the adhesive interface of the lamina members.
  • the second heater 310 is inserted into a hole penetrating the lamina member.
  • the lamina members are combined into a laminated structure by the laminator to form the above-described laminated cores (C)
  • axially penetrating holes that is, shaft holes, are formed in the center of the laminated cores (C)
  • the second heater 310 is inserted into the shaft hole of the laminated core discharged from the laminator.
  • the second heater 310 is caught in the center hole H of the lamina members in the rotational direction of the lamina members to receive rotational force, and as a reaction thereto, the integral behavior of the lamina members, more specifically, the integral rotation can be implemented.
  • the second heater 310 is a core engaging portion formed on the outer circumferential surface of the core guide 310 so as to be caught in the center hole H of the lamina members L in the rotation direction ( 312).
  • the core engaging portion 312 is engaged with the grooves or protrusions formed on the inner circumferential surfaces of the lamina members, that is, on the rim of the aforementioned center hole.
  • a laminated core rotor core
  • a hole for preventing relative rotation between the shaft and the laminated core is formed in the shaft hole of the laminated core.
  • / or protrusions are formed, and grooves or protrusions of the same shape are formed in the center hole of the lamina member for manufacturing the laminated core of this structure.
  • the core guide 310 of the core manufacturing apparatus according to the present embodiment is It has a core hooking part 311 of a shape corresponding to the groove and/or protrusion formed in the center hole of the member, that is, of an engaging shape.
  • the outer circumferential surface of the core guide 310 has a groove-shaped core.
  • the hooking portion 312 is formed long in the vertical direction.
  • the lamina member Protrusions P may be formed at equal angular intervals in the center hole of (L).
  • the laminator 100 rotates the lamina members L at 90 degrees or 180 degrees to perform index rotational lamination.
  • a structure such as a magnet hole for inserting a magnet may be formed in an outer region of the central hole of the lamina member.
  • the lamina member shown in FIG. 7 is an example in which two protrusions P are formed symmetrically with each other at an interval of 180 degrees in a center hole, and a rotation angle of 180 degrees for index rotation lamination may be applied.
  • the second heater 310 has a shape corresponding to the center hole of the lamina member, that is, a cylindrical shape, and at least one core engaging part 312 is provided on the outer circumferential surface of the second heater 310 in upper and lower directions. It is formed long in the direction, but the shape of the core guide can be changed to match the shape of the laminated core.
  • the second heater 310 is a component capable of independent vertical movement and rotational movement with respect to the core support 210, at least one for coupling the axis to the center hole of the lamina member
  • the core holding portion may be implemented in a protrusion shape formed long along the vertical direction on the outer circumferential surface of the core guide.
  • the core support 210 and the second heater 310 are raised to the upper limit, when the core support 210 is lowered again, the second heater 310 remains at the upper limit height Internal heating and integral motion (integral rotation) of the lamina members on the upper side of the core support may be implemented while being
  • the core support 210 and the second heater 310 are rotatably supported by separate bearings, that is, the first bearing 230 and the second bearing 330, mutually independent rotation is possible.
  • the lamina members (L) rotate
  • the core support 210 and the second heater 310 simultaneously rotate at the same angle and perform their respective functions.
  • the present embodiment is an apparatus for manufacturing an adhesive laminated core, that is, an apparatus for manufacturing a core of a laminated structure by combining the boundary surfaces of lamina members with an adhesive material (adhesive), for curing the adhesive material (adhesive) by heat, that is, heat curing.
  • the laminator 100 includes the aforementioned first heater 110 (Heater). That is, the first heater 110 has a heat source for externally heating the lamina members for curing of the adhesive present in the adhesive interface of the lamina members (L).
  • the upper end of the second heater 310 is preferably able to rise from the height of the upper end of the first heater 110 to a section below the upper end of the laminator.
  • the second heater 310 It rises to a height higher than the upper end of the first heater 110 (the inlet of the first heater) to guide the movement of the lamina members (L).
  • the core manufacturing apparatus forms a laminated core (C) by integrating the lamina members (L) passing through the lamination hole by an adhesive method by a predetermined number, and the lamina member ( L) may be formed by blanking in a progressive mold device.
  • the laminator 100 may be applied to a progressive mold device, and more specifically, may be provided below the blanking unit 400 .
  • the laminator 100 has an internal space for aligning and lamination and integration of the lamina members (L), that is, the above-described laminating hole (100a; Laminating Hole), and sequentially in the laminating hole (100a) by blanking of the material.
  • the laminar members (L) continuously supplied to are stacked in a vertically aligned state.
  • the laminator 100 sequentially discharges the laminated structure, that is, the laminated cores C, which are continuously formed by integrating the lamina members L. Therefore, the upper end of the laminator 100 becomes the inlet of the lamina member and the lower end of the laminator becomes the outlet of the laminated core C.
  • the blanking unit 400 is a device for blanking a material for the manufacture of the lamina members (L), for example, a metal strip (S) such as an electrical steel sheet is punched out to sequentially form the lamina members (L). Forming, the lamina member (L) formed at the same time as the punching (blanking) of the material is pushed into the inside of the laminator 100, that is, the lamination hole 100a.
  • a metal strip (S) such as an electrical steel sheet
  • the lamina members inside the laminator 100 are pushed and moved downward by one pitch as much as the thickness of the metal strip (S).
  • the laminator 100 includes the first heater 110 for heating and curing the adhesive, a squeeze mechanism 120 for inducing alignment/lamination of the laminar members, and the laminated core.
  • (C) may include a pinch mechanism (130; Pincher) for preventing the fall.
  • the squeeze mechanism 120 has a structure through which the lamina members L manufactured by the blanking unit 400 pass through in a forcibly fitted state (press-fitting state) in the vertical direction. More specifically, the squeeze mechanism 120 stacks and lowers the lamina members L so that the lamina members L are stacked in a coaxially aligned state in the upper section of the laminator 100. guide the movement
  • the squeeze mechanism 120 may include at least one hollow squeeze member that penetrates in the vertical direction, that is, a squeeze ring.
  • the pinch mechanism 130 is configured to pass the laminated core (C) in the lower section of the laminator 100, and is provided below the squeeze mechanism 120, and the laminated core (C)
  • a tubular mechanism that is elastically expandable to press the circumference and has a restoring force, or a mechanism that presses the outer circumference of the laminated core by using the elastic force of a spring may be used.
  • An external guide 140 for guiding the lamina members (L) may be provided between the squeeze mechanism 120 and the pinch mechanism 130.
  • the heater 110 is provided in a region between the squeeze mechanism and the pinch mechanism 130, and the outer guide 140 has a cylindrical shape penetrating the inside of the first heater 110 in a vertical direction. can be provided in
  • the lamina members passing through the inside of the first heater 110 are heated by the first heater 110.
  • a high-frequency induction heating device may be applied as the first heater 110, but the type of the first heater is not limited thereto, and other types of heaters such as an electric resistance heating wire, that is, a heating wire structure, are natural.
  • the outer guide 140 may be made of a non-conductive material so as not to be affected by high-frequency induction heating.
  • the pinch mechanism 130 forms a movement passage for the laminated core C in the lower region of the first heater 110, and more specifically, lamina members by a predetermined number than the lamina members L. It is a mechanism for holding the laminated core with a predetermined force by pressing the circumference of the laminated core (C) formed by interlayer bonding of (L), that is, a mechanism for applying lateral pressure. Therefore, the pinch mechanism 130 can prevent the laminated core discharged from the laminator 100 from falling down before being supported by the core support 210 .
  • the blanking unit 400 includes a blanking punch 410 provided with an upper mold 10 capable of moving up and down, and a blanking die 420 provided below the upper mold 10 .
  • the blanking die 420 is provided directly above the laminator 100 .
  • the blanking die 420 may be provided on the upper side of the squeeze mechanism 120 coaxially with the squeeze mechanism.
  • the core manufacturing apparatus in order to form the above-described laminated core (C) by integrating the lamina members (L) by a predetermined number, between the layers of the lamina members (L) Cures the existing adhesive. More specifically, the adhesive present between the layers of the lamina members (L) is the above-described laminator 100, particularly the first heater 110 and the second heater 310, further by the core support 210 It is possible to stably realize the integration of lamina members while curing evenly.
  • An adhesive for interlayer adhesion may be applied by an adhesive applicator to the material S passing between the upper mold 10 and the lower mold 20 of the laminated core manufacturing apparatus, or the material already coated with the adhesive, that is, the adhesive coating layer (
  • the material S having S1 and S2 may be supplied between the upper mold 10 and the lower mold 20.
  • a technology of manufacturing an adhesive laminated core by applying an adhesive to the surface of a material, that is, a metal strip, and punching out the metal strip, and a technology of manufacturing an adhesive laminated core by receiving and punching a metal strip already coated with an adhesive are those skilled in the art. Since it is a well-known technique, additional description thereof is omitted.
  • a cooling system for cooling the laminator 100 and its surroundings may be applied to the lower mold 20, and a heat insulating member may be applied between components forming the laminator 100 to block heat conduction. there is.
  • the upper mold 10 may further include at least one punch 11 for forming a predetermined slot or hole (for example, the center hole of the lamina member described above) in the lamina member L, ,
  • the upper side of the lower mold 20 may be provided with a die hole 21 facing the punch 11 described above.
  • examples of molding devices provided to the upper and lower molds for processing the shape of laminar members are variously known, so additional description is omitted.
  • the laminar members (L) stacked up and down inside the laminator 100 are separated based on a solid line, and the boundary surface indicated by the dotted line illustrates a portion (adhesive interface) where interlayer adhesion is made.
  • the laminator 100 may rotate the lamina members by a predetermined angle for the aforementioned index rotation lamination.
  • the squeeze mechanism 120 and the pinch mechanism 130 may rotate simultaneously at the same angular velocity.
  • the squeeze mechanism 120 is fixed inside the hollow rotary die 150 capable of rotating in place and rotates integrally with the rotary die 150 .
  • the blanking die 420 is also provided on the rotating die and rotates together with the squeeze mechanism 120 .
  • the pinch mechanism 130 also rotates simultaneously at the same angle as the squeeze mechanism in place.
  • the squeeze mechanism 120 and the pinch mechanism 130 are rotated by a rotary actuator, and may rotate by, for example, a gear transmission mechanism.
  • a gear transmission mechanism the rotary die 150 is connected to the first gear 510 rotated by the motor M to receive rotational force, and the pinch mechanism 130 is also connected to the second gear 520. It can be connected and rotated.
  • a ring gear 151 meshing with the first gear may be installed on the rotating die 150 .
  • the rotation mechanism of the squeeze mechanism 120 and the pinch mechanism 130 is not limited to the gear transmission method, and may be variously changed, such as a belt transmission method, for example.
  • the rotating die 150 and the pinch 130 are rotatably installed on the lower die by bearings.
  • the external guide 140 follows the squeeze mechanism 120 and the pinch mechanism 130 to rotate together, and the first heater 110 does not rotate. And, the rotational force of the squeeze mechanism 120 and the pinch mechanism 130 is transmitted to the core guide 310 through the lamina members L, and the lamina member into which the core guide 310 is inserted. Since they are caught on the core guide 310 in the rotational direction to ensure rotational integrity, the interfacial slip phenomenon of the lamina members can be prevented.
  • the first heater 110, the squeeze mechanism 120, and the pinch mechanism 130 may all be installed inside the rotating die and rotate simultaneously with the core guide 310 described above.
  • connection pin 610 is provided in any one of the core support 210 and the pinch mechanism 130, and the other A pin hole 620 into which the connecting pin 610 is inserted may be formed in one.
  • connection pin 610 is provided in the core support 210, the pin hole 620 is formed in the pinch mechanism 130, and the connection pin 610 is in the pin hole 620.
  • the core support 210 and the pinch mechanism 130 are coupled. Therefore, the core support 210 and the pinch mechanism 130 are rotated by the connecting pin 610 and the pin hole 620 Integrity can be strengthened.
  • the core support 210 is raised by the first cylinder body 222 and supports the lower surface of the laminated core C to be taken out through the lower end of the laminator 100 .
  • the second heater 310 enters the inside of the stacking hole 100a through the lower end of the laminator 100 and forms holes of the lamina members L having a predetermined height or less, for example, the center hole H is inserted into
  • the core hooking part 312 of the second heater is fitted into and engaged with grooves or protrusions formed in the center holes of the lamina members.
  • the second heater 310 rises to the inlet (top) of the first heater 110 or the bottom of the squeeze mechanism 120, internal heating for the lamina members (L), Furthermore, the integral behavior of the laminar members (L) is implemented.
  • the core support 210 and the second heater 310 may rise together, or one may rise first and then the other.
  • the core support 210 and the second heater 310 rise to a predetermined height (upper limit), as shown in the example shown in FIG. 9, the core support 210 by the downward movement of the lamina members (L) ) rotates together with the laminated core (C) on the core support 210 while descending stepwise by a height corresponding to the thickness of one lamina member, for example, 1 pitch, and the second heater 310
  • the integral rotation of the lamina members (L) is induced while maintaining a relative height to the first heater.
  • the core support 210 and the second heater 310 also descends. At this time, the height of the upper end of the second heater 310 is lowered to a height lower than the upper side of the core support 210, so that the laminated core C on the core support 210 is not interfered with when taking out .
  • the operation of the core support 210 and the second heater 310 may be controlled by a control unit wired or wirelessly.
  • the present invention relates to a core manufacturing apparatus, and can be used in the field of manufacturing various types of cores, such as cores for rotors and stators. there is.

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

Abstract

L'invention concerne un appareil de fabrication de noyau et un procédé de fabrication de noyau par lesquels un noyau stratifié est formé par intégration d'une pluralité d'éléments laminaires à l'aide d'un procédé de liaison. L'appareil de fabrication de noyau selon la présente invention comprend : un dispositif de stratification ayant un trou de stratification et comprenant un premier dispositif de chauffage, le trou de stratification étant formé en traversant verticalement afin de faire passer les éléments laminaires à travers celui-ci dans un état stratifié, et le premier dispositif de chauffage chauffe les éléments laminaires, traversant le trou de stratification, depuis leurs extérieurs de telle sorte que lesdits éléments laminaires soient intégrés par un adhésif présent entre leurs interfaces ; un support de noyau capable de monter et descendre et disposé au-dessous du trou de stratification afin de supporter le noyau stratifié déchargé à partir du trou de stratification ; et un second dispositif de chauffage qui peut entrer dans le trou de stratification par l'intermédiaire de l'extrémité inférieure du trou de stratification de façon à chauffer les éléments laminaires depuis leurs intérieurs, et peut se déplacer vers le haut et vers le bas en traversant le support de noyau. Selon la présente invention, les éléments laminaires sont chauffés depuis l'extérieur et l'intérieur, et ainsi l'adhésif peut être durci uniformément, et une liaison inter-couche entre les éléments laminaires peut se produire de manière stable.
PCT/KR2021/015264 2021-10-27 2021-10-28 Appareil de fabrication de noyau et procédé de fabrication de noyau WO2023074938A1 (fr)

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KR10-2021-0144477 2021-10-27
KR1020210144477A KR102575532B1 (ko) 2021-10-27 2021-10-27 코어 제조장치 및 제조방법

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KR101990291B1 (ko) 2017-11-06 2019-06-20 (주)항남 스프레이 방식의 접착식 적층 코어 제조 장치
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JP2001185433A (ja) * 1999-12-27 2001-07-06 Nippon Steel Corp 鉄芯の製造方法とその方法に適した装置
KR101735246B1 (ko) * 2016-08-22 2017-05-24 (주)항남 가열 접착식 회전 적층 코어 제조 장치
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