WO2023080326A1 - 저압인서트 사출을 이용한 자성코어의 봉지방법과 이를 이용하여 봉지한 자성코어 - Google Patents
저압인서트 사출을 이용한 자성코어의 봉지방법과 이를 이용하여 봉지한 자성코어 Download PDFInfo
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- WO2023080326A1 WO2023080326A1 PCT/KR2021/018181 KR2021018181W WO2023080326A1 WO 2023080326 A1 WO2023080326 A1 WO 2023080326A1 KR 2021018181 W KR2021018181 W KR 2021018181W WO 2023080326 A1 WO2023080326 A1 WO 2023080326A1
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- Prior art keywords
- magnetic core
- insert injection
- insert
- magnetic
- sealing method
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- 238000001746 injection moulding Methods 0.000 title claims abstract 3
- 238000005538 encapsulation Methods 0.000 claims abstract description 35
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Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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- 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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
-
- 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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- 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
-
- 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
- H01F41/005—Impregnating or encapsulating
-
- 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
Definitions
- the present invention relates to a method for encapsulating a magnetic core and a product thereof, and more particularly, to encapsulate a magnetic core using low-pressure insert injection to lower process costs and maintain crushing strength while minimizing a decline in magnetic properties of a final magnetic product. It is about the sealing method.
- a sealing process is performed to seal the toroidal magnetic core in the finished portion.
- This sealing process it is possible to prevent core cracks and coil scratches caused by wires during winding, insulation between magnetic cores and coils, and corrosion and erosion caused by exposure to outside air.
- the encapsulation method there are two methods, a coating method by painting as shown in FIG. 1 and a plastic casing method by assembling a case as shown in FIG. were appropriately selected and used.
- Patent Document 1 Republic of Korea Patent Registration No. 10-2054299
- a technical problem to be achieved by the present invention is to provide a magnetic core encapsulation method that overcomes the first problem that the process cost is too high in the toroidal encapsulation method through a simple process.
- the technical problem to be achieved by the present invention is to use a solution, washing solution, and impregnation solution harmful to the environment used in the impregnation, washing, and curing processes, even if sealed without the impregnation process, the second ring strength cannot be secured. It is to provide a method of encapsulating a magnetic core that overcomes the problems.
- a technical problem to be achieved by the present invention is to provide a magnetic core sealing method and a product thereof that solves the third problem that the magnetic properties of the final product of the magnetic core are severely deteriorated when insert injection is used.
- a technical problem to be achieved by the present invention is a magnetic core encapsulation method that solves the fourth problem of requiring an encapsulation method capable of integrally coating various types of cores such as laminated toroidal cores or bobbin role parts, and the like. to provide a product.
- an embodiment of the present invention is an insert placing step of placing a magnetic core in a mold as an insert; and an encapsulation compound layer forming step of forming a polymer encapsulation compound layer on the surface of the magnetic core by injecting a polymer compound while maintaining the inside of the mold at a low pressure to encapsulate the surface of the magnetic core with the polymer compound.
- a magnetic core sealing method using an insert injection method is provided.
- the magnetic core may be a magnetic core sealing method using an insert injection method, characterized in that the magnetic core has a toroidal structure.
- the insert placing step includes stacking a plurality of magnetic cores vertically, and the plurality of magnetic cores are integrally sealed, using an insert injection method. It may be a magnetic core sealing method.
- it may be a magnetic core sealing method using an insert injection method, characterized in that the plurality is 2 or more and 6 or less.
- the insert placing step further includes an accompanying object placing step of placing an accompaniment other than the magnetic core, and the polymer encapsulating compound layer is placed in the magnetic core and other than the magnetic core.
- an accompanying object placing step of placing an accompaniment other than the magnetic core
- the polymer encapsulating compound layer is placed in the magnetic core and other than the magnetic core. It may be a magnetic core sealing method using an insert injection method, characterized in that the accompanying product is integrally sealed.
- the magnetic core sealing method using the insert injection method characterized in that the accompanying objects other than the magnetic core include shapes for fastening and fixing structures such as bobbins, reinforcing bars, and supports, or protruding shapes such as winding dividing ribs.
- the accompanying objects other than the magnetic core include shapes for fastening and fixing structures such as bobbins, reinforcing bars, and supports, or protruding shapes such as winding dividing ribs.
- the magnetic core and an accompanying product other than the magnetic core are injected simultaneously, or the magnetic core and an accompanying product other than the magnetic core are simultaneously injected.
- It may be a magnetic core sealing method using an insert injection method, characterized in that it includes any one of the additional injection.
- the polymer compound in the step of forming the encapsulation compound layer may be a magnetic core encapsulation method using an insert injection method, characterized in that it includes a super engineering plastic compound.
- the super engineering plastic compound may be a magnetic core sealing method using an insert injection method, characterized in that it is a thermoplastic super engineering plastic compound.
- thermoplastic super engineering plastic compound is polyphenylene sulfide (PolyPhenyleneSulfide, PPS) polyphthalamide ( Polyphthalamide , PPA), polybutylene terephthalate (Polybutylen Terephthalate, PBT), and liquid crystal polymer (Liquid Crystal Polymer, It may be a magnetic core sealing method using an insert injection method, characterized in that it includes at least one selected from the group consisting of LCP) and the like.
- PPS polyphenylene sulfide
- PPA polyphthalamide
- PBT polybutylene terephthalate
- liquid crystal polymer Liquid Crystal Polymer
- the low pressure may be a magnetic core sealing method using an insert injection method, characterized in that 100 kgf / cm 2 or less.
- another embodiment of the present invention provides a magnetic core sealed by the above sealing method.
- the encapsulation process does not include an impregnation step, a washing step, and a curing step, so the first effect is that the overall process cost can be reduced through the minimization of the process step, the encapsulation process without the impregnation process
- the third effect of reducing the magnetic properties of the final magnetic product and further increasing the withstand voltage characteristics can be provided.
- 1 to 3 are views showing the sealing method of the conventional coating core, case core, and ribbon core method, respectively.
- FIG. 4 is a flowchart illustrating a method of encapsulating a magnetic core using an insert injection method according to an embodiment of the present invention.
- FIG 5 and 6 are exemplary views of a magnetic core including an encapsulation compound layer manufactured according to a method for encapsulating a magnetic core according to an embodiment of the present invention.
- FIG. 7 is a view showing a magnetic core in which a plurality of magnetic cores are stacked vertically and integrally sealed.
- FIGS. 8 to 10 are diagrams showing a magnetic core in which an accompanying product such as a bobbin or reinforcing bar is integrally sealed.
- Magnetic core used throughout the specification means a metal object having magnetism.
- 1 to 3 are views showing the sealing method of the conventional coating core, case core, and ribbon core method, respectively.
- FIG. 4 is a flowchart illustrating a method of encapsulating a magnetic core using an insert injection method according to an embodiment of the present invention.
- FIGS. 5 and 6 are exemplary views of a magnetic core including an encapsulation compound layer manufactured according to a method for encapsulating a magnetic core according to an embodiment of the present invention.
- an embodiment of the present invention will be described with reference to FIGS. 1 to 6 .
- S100 insert placing step
- S200 encapsulation compound layer forming step
- the final magnetic product 100 including a magnetic core 200 and a polymer encapsulating compound layer 300 surrounding the magnetic core 200 is formed. It becomes.
- the method of encapsulating the magnetic core 200 using the insert injection method of the present invention is much more economical in terms of process cost as it is a method of encapsulation with fewer process steps than the existing methods of encapsulation using painted cores and case cores.
- the magnetic core sealing method using the insert injection method according to an embodiment of the present invention unlike the existing coating core and case core sealing methods, includes an impregnation step (S20), washing steps (S10, S25), and curing. Steps S15 and S30 are not included.
- the impregnation (S20) means a step of infiltrating a porous object with a gaseous or liquid material to improve the properties of the object according to the purpose of use.
- the reason for including the above processes in the existing process is that magnetic This is a step through which the impregnating liquid is infiltrated into the micropores inside the powder constituting the core and hardened to fill the pores to increase the rolling strength.
- a predetermined crushing strength is secured by including the step of excluding the impregnation, washing, and curing processes and replacing the painting process with insert injection. , It is also possible to prevent a reduction in crushing strength that may occur by not including the above three process steps.
- a step (S110) of placing the magnetic core 200 as an insert in a mold is included.
- an accompanying object placing step (S120) of placing various accompanying objects may also be included according to the needs of the user.
- the magnetic core 200 may be a magnetic core having various shapes, for example, it may be a magnetic core of various shapes such as a toroidal structure, a plate structure, a ribbon structure, and the like. However, it is not limited to the above examples, and all structures of magnetic cores capable of achieving the objects and effects of the present invention should be construed as belonging to the scope of this right.
- the magnetic core 200 may include, for example, any one or more of the group including Fe, Ni, Mo, Si, and Cr, and is not limited to the above example. Depending on the industrial field or technical field where the final magnetic product 100 is required, the user will be able to select the components of the magnetic core as needed.
- FIG. 7 is a view showing a magnetic core in which a plurality of magnetic cores are stacked vertically and integrally sealed.
- a method of sealing a magnetic core by stacking several magnetic cores will be described with reference to FIG. 7 .
- the final magnetic product 100 can be formed by integrally injecting various accompanying products or magnetic cores in the injection step.
- the plurality of magnetic cores 210 and 220 are stacked up and down by sequentially placing the plurality of magnetic cores and then integrally ejecting and sealing the plurality of magnetic cores 210 and 220, It is possible to provide an encapsulation method in which the individual magnetic cores are integrally encapsulated.
- the plurality of magnetic cores may be magnetic cores in a stacked form of 2 or more and 6 or less or 150 mm or less in height.
- the range of the number of the plurality of magnetic cores 210 and 220 depends on the size of the width or surface area of the magnetic core 200 used and the type of super engineering plastic, which is a polymer compound used in the encapsulating compound layer forming step (S200) to be described later.
- the upper limit may also vary accordingly.
- the laminated structure becomes vulnerable to external force in the vertical direction, and accordingly, cracks occur in the encapsulation compound layer, resulting in damage to the encapsulation compound layer.
- a structure in which a plurality of products are stacked becomes longer than 150 mm in a vertical direction, it is impossible to configure an injection mold for injecting an encapsulation compound layer.
- FIGS. 8 to 10 are diagrams showing a magnetic core in which an accompanying product such as a bobbin or reinforcing bar is integrally sealed.
- an insert placing object step (S100) further including an accompanying object placement step (S120) will be described.
- an accompanying object placing step (S120) of placing various accompanying materials (400, 500) in addition to the magnetic core is further included to manufacture an integrated magnetic core including various accompanying materials in the encapsulating compound layer. can do.
- the incidental material may be an incidental material corresponding to the bobbin or the reinforcing rod, but is not limited thereto and may include various incidental matter necessary for the use of the magnetic core.
- the components of the bobbin and the reinforcing rod may preferably be made of the same components as the encapsulating compound layer 300, but are not limited thereto, and polyphenylene sulfide (PPS), polyphthalamide (Polyphthalamide, PPA)
- PPS polyphenylene sulfide
- PPA polyphthalamide
- a bobbin and a reinforcing rod having a thermoplastic resin composed of, polybutylene terephthalate (PBT), etc. as a component may be used.
- the magnetic core and an accompanying product other than the magnetic core are injected simultaneously, or the magnetic core and the magnetic core are injected simultaneously. It may be any one of additional injections for injecting incidental products other than the magnetic core at different times.
- the shape for assembly is first injected on the surface of the magnetic core to increase the additional shape and assembly ability of the accompanying product, so that it can be used in the case of an accompanying product having a complicated shape.
- the injection timing can be determined by appropriately selecting the above method according to the use situation in consideration of the industrial field, technical field, and structure complexity of the accompanying products that the user intends to use.
- the encapsulating compound layer of the magnetic core having the reinforcing base 400 having the 1-1 coupling portion 410 and the 2-1 coupling portion 420 formed thereon In this case, as can be seen from FIG. 8, the coupling process may be coupled passing through the center of the toroidal magnetic core.
- the reinforcing bar 500 on which the first-second coupling portion 510 is formed and the encapsulation compound layer of the magnetic core on which the second-second coupling portion 520 is formed may be coupled, At this time, as can be seen from FIG. 9, the coupling process may be coupling by standing the magnetic core vertically.
- the encapsulating compound layer of the magnetic core in which the split ribs 610 are formed may be combined.
- the split rib 610 performs a function of dividing space by erecting the rib shape vertically to perform eccentric winding or split winding according to its function.
- a polymer compound is injected (S210) into a mold in which a magnetic core is located through the insert placing step (S100) to encapsulate the surface of the magnetic core with the polymer compound.
- This is a step of forming a polymer encapsulating compound layer on the surface of the magnetic core.
- the polymer compound may include a super engineering plastic compound.
- the super engineering plastic compound has high heat resistance, strong mechanical strength, good dimensional stability and electrical properties, and is therefore suitable for use in the encapsulating compound layer 300.
- the super engineering plastic compound may be a thermoplastic super engineering plastic compound.
- the thermoplastic super engineering plastic compound for example, polyphenylene sulfide (PPS), polyphthalamide (PPA), polybutylene terephthalate (Polybutylen Terephthalate, PBT), liquid crystal polymer (Liquid Crystal Polymer, LCP), etc., but may include any one or more selected from most thermoplastic resins, but is not limited to the above examples.
- the temperature of the mold used in the injection process is maintained at 90 ° C. to 150 ° C.
- the injection pressure is maintained at a low pressure
- the polymer compound is formed in the injection machine.
- the injection speed may be maintained at more than 0 mm/s and less than 50 mm/s, and the process time may be less than 5 seconds.
- the low pressure may be maintained at 100 kgf/cm2 or less. At this time, when the pressure exceeds 100 kgf/cm2, the pressure becomes excessively high, causing a problem of adversely affecting the magnetic properties of the final product.
- the soft magnetic metal powder core whose surface is sealed with thermoplastic super encapsulation may be obtained by performing an insert injection process in a low pressure state maintaining the pressure at 100 kgf/cm2 or less.
- a toroidal magnetic core was manufactured through an encapsulation process. Specific process steps are as follows.
- the magnetic core is manufactured by compression molding of soft magnetic metal powder, and after heat treatment of the magnetic core, an injection process is performed to replace it after excluding impregnation, hardening, and painting processes. At this time, the core is used as an insert After the insert material was inserted into the injection mold and a thermoplastic Super Enpla resin was applied to the surface of the soft magnetic metal powder core by an injection process, an encapsulation compound layer was formed on the surface of the magnetic core.
- the two magnetic cores are integrally sealed to manufacture a toroidal magnetic core in which the two magnetic cores are integrally sealed.
- Specific process steps are as follows.
- Embodiment 2 in the step of injecting into the mold in the environment where the magnetic core of Embodiment 1 is laminated and inserted into the mold, the same method as in Embodiment 1 is performed except for injecting two magnetic cores. A toroidal magnetic core was manufactured.
- Fig. 11 is a diagram showing an example of a toroidal magnetic core in which two magnetic cores manufactured in Example 2 are collectively sealed.
- Example 2 by going through the above process steps, it was possible to successfully manufacture a toroidal magnetic core in which the two stacked magnetic cores were collectively sealed.
- a bobbin-integrated toroidal magnetic core was manufactured by injecting the bobbin together in the step of forming the encapsulating compound layer. Specific process steps are as follows.
- Example 3 the toroidal magnetic core was manufactured in the same manner as in Example 1, except that the bobbin was also injected in the step of injecting the super engineering plastic of Example 1.
- entry 1 refers to a painted product painted using a conventional coating method
- entry 2 refers to a painted product of the present invention sealed with polyphenylene sulfide resin
- entry 3 refers to a polyphthalamide resin. It means the sealed painted product of the present invention
- entry 4 means the coated product of the present invention sealed with polybutylene terephthalate resin.
- entryA refers to a product group using a conventional coating method
- entryB refers to a product group of the present invention sealed with polyphenylene sulfide resin
- entryC refers to a product of the present invention sealed with polyphthalamide resin
- entryD refers to a product group of the present invention sealed with polybutylene terephthalate resin.
- 210, 220 a plurality of stacked magnetic cores
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
Entry |
Permalloy 분말 자성코어
(투자율 60μ) |
Permalloy 분말 자성코어
(투자율 125μ) |
Ni-Fe-Mo 분말 자성코어
(투자율 60μ) |
Ni-Fe-Mo 분말 자성코어
(투자율 125μ) |
코아손실(mW/cc) | 코아손실(mW/cc) | 코아손실(mW/cc) | 코아손실(mW/cc) | |
Entry1 | 207 | 300 | 144 | 249 |
Entry2 | 170 | 242 | 135 | 226 |
Entry3 | 175 | 251 | 131 | 233 |
Entry4 | 179 | 250 | 122 | 218 |
토로이달 코어 크기 | 종래 제품 | 폴리페닐렌설파이드 수지로 봉지한 본 발명의 제품 |
강도(kgf/cm²) | 강도(kgf/cm²) | |
Ø23 | 49.7 | 69.9 |
Ø27-1 | 100 | 136.2 |
Ø27-2 | 111.5 | 121.3 |
Ø33 | 98.9 | 101.5 |
5.0kV@60Hz, 60sec, 1mA↓ (내전압 테스터기 Max 5kV) | |||
봉지방법 | 실험시료 | 절연성 | 절연성 합격 적부 |
누설 전류 평균 [mA] | 1mA 이하 만족할 것 | ||
entryA | entryA.1 | 1.00 (30sec 경과후) | 불합격 |
entryA.2 | 0.16 | 합격 | |
entryA.3 | 0.14 | 합격 | |
entryB | entryB.1 | 0.09 | 합격 |
entryB.2 | 0.12 | 합격 | |
entryB.3 | 0.10 | 합격 | |
entryB.4 | 0.12 | 합격 | |
entryC | entryC | 0.10 | 합격 |
entryD | entryD.1 | 0.13 | 합격 |
entryD.2 | 0.12 | 합격 | |
entryD.3 | 0.10 | 합격 | |
entryD.4 | 0.12 | 합격 |
Claims (12)
- 자성코어를 인서트물로 하여 금형에 안치하는 인서트물안치단계; 및상기 금형 내를 저압으로 유지하며 고분자화합물을 사출하여 상기 자성코어의 표면을 상기 고분자화합물로 봉지하여 상기 자성코어의 표면에 고분자 봉지화합물층을 형성하는 봉지화합물층형성단계;를 포함하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항에 있어서,상기 자성코어는 토로이달 구조의 자성코어인 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항에 있어서,상기 인서트물안치단계는, 복수개의 자성코어를 상하로 적층하는 단계를 포함하고,상기 복수개의 자성코어는 일체로 봉지되는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제3항에 있어서,상기 복수개는 2개 이상 6개 이하인 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항에 있어서,상기 인서트물안치단계는, 상기 자성코어 이외의 부수물을 안치하는 부수물안치단계를 더 포함하고,상기 고분자 봉지화합물층은 상기 자성코어와 상기 자성코어 이외의 부수물을 일체로 봉지하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제5항에 있어서,상기 자성코어 이외의 부수물은, 보빈, 보강대, 지지대, 및 권선분할리브, 중 어느 하나를 포함하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제5항에 있어서,상기 봉지화합물층형성단계는, 상기 자성코어와 상기 자성코어 이외의 부수물에 동시(同時)에 사출하는 일체사출 또는 상기 자성코어와 상기 자성코어 이외의 부수물을 이시(異時)에 사출하는 추가사출 중 어느 하나를 포함하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항에 있어서,상기 봉지화합물층형성단계의 고분자화합물은, 슈퍼엔지니어링 플라스틱화합물을 포함하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제8항에 있어서,상기 슈퍼엔지니어링 플라스틱화합물은, 열가소성 슈퍼엔지니어링 플라스틱화합물인 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제9항에 있어서,상기 열가소성 슈퍼엔지니어링 플라스틱화합물은, 폴리페닐렌설파이드(PolyPhenyleneSulfide, PPS) 폴리프탈아미드(Polyphthalamide, PPA), 폴리부틸렌테레프탈레이트(Polybutylen Terephthalate, PBT), 및 액정 결정성 폴리머(Liquid Crystal Polymer, LCP)로 이루어진 군으로부터 선택된 어느 하나 이상을 포함하는 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항에 있어서,상기 저압은, 100kgf/cm² 이하인 것을 특징으로 하는, 인서트사출공법을 이용한 자성코어 봉지방법.
- 제1항의 봉지방법에 의해 봉지된, 자성코어.
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Citations (6)
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JPH0336709A (ja) * | 1989-07-04 | 1991-02-18 | Mitsui Petrochem Ind Ltd | 磁気コアの製法 |
JPH0336711A (ja) * | 1989-07-04 | 1991-02-18 | Mitsui Petrochem Ind Ltd | 磁気コアの製法 |
KR20070050926A (ko) * | 2004-08-23 | 2007-05-16 | 니뽄 가가쿠 야킨 가부시키가이샤 | 자성 코어부품의 제조방법 |
KR20190093436A (ko) * | 2018-02-01 | 2019-08-09 | 엘지이노텍 주식회사 | 자성코어 조립체 및 이를 포함하는 코일부품 |
KR102054299B1 (ko) | 2012-07-25 | 2020-01-22 | 에누티에누 가부시키가이샤 | 복합 자성 코어 및 자성 소자 |
KR20200060841A (ko) * | 2018-11-23 | 2020-06-02 | (주)창성 | 하이브리드 타입 인덕터 |
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KR100326737B1 (ko) * | 1998-11-06 | 2002-06-20 | 김병규 | 극박형 아몰퍼스 코아 |
KR102009780B1 (ko) * | 2017-06-08 | 2019-08-12 | 주식회사 아모그린텍 | 적층형 분말 코어 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0336709A (ja) * | 1989-07-04 | 1991-02-18 | Mitsui Petrochem Ind Ltd | 磁気コアの製法 |
JPH0336711A (ja) * | 1989-07-04 | 1991-02-18 | Mitsui Petrochem Ind Ltd | 磁気コアの製法 |
KR20070050926A (ko) * | 2004-08-23 | 2007-05-16 | 니뽄 가가쿠 야킨 가부시키가이샤 | 자성 코어부품의 제조방법 |
KR102054299B1 (ko) | 2012-07-25 | 2020-01-22 | 에누티에누 가부시키가이샤 | 복합 자성 코어 및 자성 소자 |
KR20190093436A (ko) * | 2018-02-01 | 2019-08-09 | 엘지이노텍 주식회사 | 자성코어 조립체 및 이를 포함하는 코일부품 |
KR20200060841A (ko) * | 2018-11-23 | 2020-06-02 | (주)창성 | 하이브리드 타입 인덕터 |
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