KR960016213B1 - Preperation method of the rotor for motor - Google Patents

Preperation method of the rotor for motor Download PDF

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Publication number
KR960016213B1
KR960016213B1 KR1019930013320A KR930013320A KR960016213B1 KR 960016213 B1 KR960016213 B1 KR 960016213B1 KR 1019930013320 A KR1019930013320 A KR 1019930013320A KR 930013320 A KR930013320 A KR 930013320A KR 960016213 B1 KR960016213 B1 KR 960016213B1
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KR
South Korea
Prior art keywords
hole
injection
magnet
holes
rotor
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KR1019930013320A
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Korean (ko)
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KR950004697A (en
Inventor
임종관
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한국권선기술 주식회사
임종관
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Priority to KR1019930013320A priority Critical patent/KR960016213B1/en
Publication of KR950004697A publication Critical patent/KR950004697A/en
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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

Abstract

The molding apparatus comprises magnet fixing hole(2,2') on both sides of separable upper and lower molds(1,1'), axis fixing hole(3) in the center, connection hole(7) for the injection molded product, introduction hole(8) for the injection molded product in the center of the upper mold(1), and linearly connected central injection hole(12"). In the center of the magnet fixing hole(2,2') ring forming holes(10,10') are placed. At the proper position of ring holes isolating walls(11,11") of the same depth of ring holes are placed for the injection molded product. Isolating holes(12,12') for the injection molded product are formed so that the distance from the introduction hole(8) for the injection molded product is shorter than the central injection hole(12").

Description

모우터용 회전자(ROTOR) 제조용 금형Mold for manufacturing motor rotor

제 1 도는 본 발명 방법의 금형 단면도.1 is a cross-sectional view of a mold of the method of the present invention.

제 2 도는 제 1 도 A-A선 종단면도.2 is a longitudinal cross-sectional view taken along line 1-A.

제 3 도는 본 발명 금형에 자석가 축이 고정된 상태의 단면도.3 is a cross-sectional view of a state in which a magnet is fixed to a mold of the present invention.

제 4 도는 자석고정 사출물의 사출공정 예시도.4 is an illustration of the injection process of the magnet-fixed injection molding.

제 5 도는 자석과 축이 사출고정물에 의해 고정된 상태의 회전자 사시도.5 is a perspective view of the rotor with the magnet and the shaft fixed by the injection fixture.

제 6 도는 자석외벽측의 사출물 링이 제거된 상태의 회전자 사시도.6 is a perspective view of the rotor with the injection ring on the magnet outer wall side removed.

제 7 도는 종래 회전자의 제조방법의 예시도.7 is an illustration of a method of manufacturing a conventional rotor.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1,1' : 상하 금형2,2' : 자석 고정홀1,1 ': up and down mold 2,2': magnet fixing hole

3 : 축 고정홀4,4' : 자석3: shaft fixing hole 4,4 ': magnet

5 : 축6,6' : 공간부5: axis 6,6 ': space part

8 : 사출공9 : 사출물8: injection hole 9: injection

10,10' : 링 성형홈11,11' : 단절벽10,10 ': Ring forming groove 11,11': Single wall

12,12' : 양쪽 사출분리공12" : 중앙부 사출공12,12 ': Both sides injection separation hole 12 ": Center part injection hole

13,13' : 링14,14' : 분리공간13,13 ': Ring 14,14': Separation space

본 발명은 모우터용 회전자 또는 제네레이터용 회전자를 제조함에 있어서, 축에 링상태의 자석을 고정시키는 모우터용 회전자 제조용 금형에 관한 발명이다.The present invention relates to a mold for manufacturing a rotor for a motor for fixing a magnet in a ring state to a shaft when manufacturing a motor rotor or a generator rotor.

보다 상세하게는 회전자를 구성하는 축과 자석을 그 구조상의 특징에 알맞도록 일체화시키는 방법에 관한 것으로, 원형 봉상태의 축에 내경이 축직경보다 큰 링 상태의 자석을 견고하게 고정시킴에 있어서 자석이 파손되거나 균형이 발생하는 것을 완전히 방지할 수 있는 금형을 발명하게 된 것으로 자석내경과 축외경 사이의 공간으로 유입되는 사출고정물이 자석의 외경공간부로 먼저 유입 성형되면서 후에 자석내경과 축외경 사이의 공간부로 유입되어 충진되도록 함으로서 자석외경의 공간부에 충진압력이 먼저 가해지게 되고 자석의 내경공간부에 충진압력이 후에 가해지게 됨으로 동일한 압에 의해 자석의 파손이나 변형 또는 균열발생이 없게 되는 것이다.More particularly, the present invention relates to a method of integrating a shaft constituting a rotor and a magnet in accordance with structural features thereof, and in the case of firmly fixing a magnet in a ring state having an inner diameter greater than that of a shaft in a circular rod state shaft. The invention is to invent a mold that can completely prevent the magnet from being damaged or balanced. The injection fixture introduced into the space between the magnet inner diameter and the outer diameter of the magnet is first introduced into the outer diameter space of the magnet and then molded between the magnet inner diameter and the outer diameter of the magnet. The filling pressure is first applied to the space of the magnet outer diameter by filling the space into the space of the magnet and the filling pressure is applied to the space of the inner diameter of the magnet so that no damage, deformation or cracking of the magnet occurs due to the same pressure. .

제 7 도는 공지 회전자의 제조방법에 관한 예시도로 상하 금형(1)(1')에 형성되는 양쪽 자석 고정홀(2)(2')와 축 고정홀(3)에 각각 자석(4)(4')와 축(5)를 고정시키며, 자석(4)(4')의 내경과 축(5)의 외경사이에 생기는 공간부(6)(6') 및 사출물 연결홀(7)에 사출공(8)을 통해 사출물(9)를 사출시키는 방법이 알려지고 있는 것이다.7 shows an example of a manufacturing method of a known rotor, and magnets 4 (both in the magnet fixing holes 2, 2 'and the shaft fixing hole 3 formed in the upper and lower molds 1, 1', respectively). 4 ') and the shaft 5 are fixed, and injected into the space portion 6, 6' and the injection joint 7 formed between the inner diameter of the magnets 4, 4 'and the outer diameter of the shaft 5. It is known how to inject the injection molded product (9) through the ball (8).

그러나 종래 이와같은 방법은 많은 문제점을 안고 있는 것으로 자석(4)(4')가 고정되는 공간부(6)(6')의 직경과 사출압력에 의해 팽창될 수 있는 자석의 경도에 따른 팽창계수가 정확하게 계산되어야 하며 약간의 오차가 발생하게 되면 자석의 파손이나 균열로 인한 불량품 발생율이 높아지게 되는 것이다.However, such a conventional method has many problems, and the expansion coefficient according to the hardness of the magnet which can be expanded by the diameter of the space parts 6 and 6 'where the magnets 4 and 4' are fixed and the injection pressure. Should be calculated accurately, and if a little error occurs, the rate of defective products due to magnet breakage or cracking will increase.

또한 사출성형에 의하여 회전자에 고정되는 자석을 성형시 자장을 걸어 자석분말 입자가 자장의 방향으로 배열되게 하는 이방성 자석의 제조방법이 일본 공개특허 초록 특개공 평2-305호로 알려지고 있으나 이는 플라스틱 자석을 모우터 회전자의 양쪽 방향으로 사출성형하기 위하여 두 방향의 사출통로를 이용하게 하는 구조를 갖는 것으로 본원과 같이 분말자석으로 고착화된 자석을 회전자로 이용하는 방법에서는 이용될 수 없는 방법이며 상기 선행 방법에서의 플라스틱 자석은 그 성능이 극히 좋지 않은 문제점이 있게 되는 것이다.In addition, a method of manufacturing an anisotropic magnet in which the magnetic powder particles are arranged in the direction of the magnetic field by applying a magnetic field when forming a magnet fixed to the rotor by injection molding is known as Japanese Patent Application Laid-Open No. Hei 2-305. It has a structure to use the injection passage in two directions in order to injection-molded the magnet in both directions of the motor rotor, and can not be used in the method of using a magnet fixed in powder magnet as the rotor as described above. Plastic magnets in the prior art have a problem that their performance is extremely poor.

본 발명은 이와같은 종래 금형의 문제점을 해결하게 된 것으로, 본 발명의 금형 구조 및 이에 따른 작용 효과를 첨부도면에 의거하여 설명하면 다음과 같다.The present invention is to solve the problems of the conventional mold, the mold structure of the present invention and the effect according to the accompanying drawings will be described as follows.

제 1 도는 본 발명 회전자 제조금형을 보인 단면도로서, 상하 금형(1)(1')의 양쪽에 자석(4)(4')의 고정홀(2)(2')와 중심부에 축(5)의 고정홀(3) 및 중간부에 사출물 연결홀(7)을 구비한 구성은 공지이다.1 is a cross-sectional view showing the rotor manufacturing mold of the present invention, wherein the fixing holes 2, 2 'of the magnets 4, 4' are positioned on both sides of the upper and lower molds 1, 1 ', and the shaft 5 is disposed at the center thereof. It is known that the fixing hole 3 and the injection molding connection hole 7 in the middle portion of the ().

본 발명은 상기 공지한 금형의 자석 고정홀(2)(2')의 중간부에 사출물이 자석(4)(4')의 외경을 감싸는 링 성형홀(10)(10')을 요설하며 링 성형홀(10)(10')의 적당한 위치에 링 성형홀(10)(10')의 높이와 같은 단절벽(11)(11')이 형성되고, 상기 사출공(8)에서 좌우 및 중앙부로 분리천공되는 양쪽 사출분리공(12)(12')는 링 성형홀(10)(10')에 연통시키고 중앙부 사출공(12")는 사출물 연결홀(7)에 연통시킨다.The present invention provides a ring forming hole (10, 10 ') in which the injection molding wraps the outer diameter of the magnet (4) (4') in the middle of the magnet fixing hole (2) (2 ') of the known mold At the proper positions of the forming holes 10 and 10 ', the break walls 11 and 11', which are the same as the heights of the ring forming holes 10 and 10 ', are formed, and the left and right and center portions of the injection holes 8 are formed. Both injection separation holes 12 and 12 'are separated and communicated with the ring forming holes 10 and 10', and the central injection hole 12 "communicates with the injection hole 7.

상기 양쪽 사출분리공(12)(12')와 링 성형홀(10)(10')와의 거리는 중앙부 사출공(12")과 사출물 연결홀(7)과 거리보다 짧게 형성하고 있다.The distance between the two injection separation holes 12 and 12 'and the ring forming holes 10 and 10' is formed to be shorter than the distance between the central injection hole 12 "and the injection joint connecting hole 7.

본 발명 금형으로 회전자를 제조하기 위해서는 상하 금형(1)(1')의 자석 고정홀(2)(2')와 축 고정홀(3)에 자석(4)(4')와 축(5)를 고정시킨 다음, 사출공(8)을 통해 사출물(9)를 유입시키면 사출물(9)가 양쪽 사출분리공(12)(12')과 중앙부 사출공(12")을 통해 링 성형홀(10)(10')과 사출물 연결홀(7)로 유입된다.In order to manufacture the rotor with the mold of the present invention, the magnets 4, 4 'and the shaft 5 are disposed in the magnet fixing holes 2, 2' and the shaft fixing holes 3 of the upper and lower molds 1, 1 '. ), And then the injection molding 9 is introduced through the injection hole 8 so that the injection molding 9 is formed through both injection separation holes 12 and 12 'and the central injection hole 12 ". 10) 10 'and the injection molding connection hole 7 is introduced.

이때 사출물(9)의 충진이 링 성형홀(10)(10')에서 먼저 이루어지며 자석(4)(4')의 내경과 축(5)의 외경사이에 상기는 공간부(6)(6')와 사출물 연결홀(7)에는 충진이 후에 이루어지게 되며 링 성형홀(10)(10')의 단절벽(11)(11')에 의해 링(13)(13')에 분리공간(14)(14')가 생기게 된다.In this case, the filling of the injection molding 9 is first performed in the ring forming holes 10 and 10 ′, and the space 6 and 6 between the inner diameter of the magnets 4 and 4 ′ and the outer diameter of the shaft 5. ') And the injection molding connection hole 7 are filled later, and the separation spaces (13) and (13') are separated in the rings (13) and (13 ') by the break walls (11, 11') of the ring forming holes (10) (10 '). 14) (14 ').

이와같이 사출공정이 완료된 회전자를 금형에서 인출하여 자석(4)(4')의 외주벽에 감싸인 사출물(9)로 된 링(13)(13')은 분리공간(14)(1')을 이용하여 제거하면 회전자가 완성된다.Thus, the ring 13 and 13 'made of the injection-molded material 9 which is drawn out from the mold and wrapped around the outer circumferential wall of the magnets 4 and 4' are separated from the space 14 and 1 '. Remove the rotor to complete the rotor.

본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention.

자석 고정홀(2)(2')보다 외경이 큰 링 성형홀(10)(10')가 형성되고, 양쪽 링 성형홀(10)(10')와 연통되는 양쪽 사출분리공(12)(12')을 통과하는 사출물(9)가 링 성형홀(10)(10')로 먼저 유입되도록 구성하고, 중앙부 사출공(12")을 통과하는 사출물(9)가 사출물 연결홀(7)에 약간 늦게 유입되도록 하고 링 성형홀(10)(10')의 면적과 공간부(6)(6')의 면적 및 사출물 연결홀(7)의 면적의 차이에 의하여 자석(4)(4')의 외경에 링(13)(13')이 충진된 후 약간의 차이로 공간부(6)(6')와 사출물 연결홀(7)에 충진됨으로 사출압력에 의한 자석의 파손이나 균열발생을 방지할 수가 있는 것이다.Ring injection holes 10 and 10 'having a larger outer diameter than the magnet fixing holes 2 and 2' are formed, and both injection separation holes 12 communicating with both ring forming holes 10 and 10 '( The injection molding 9 passing through the 12 'is first introduced into the ring forming holes 10 and 10', and the injection molding 9 passing through the central injection hole 12 " And the magnets 4 and 4 'by the difference between the area of the ring forming holes 10 and 10' and the area of the spaces 6 and 6 'and the area of the injection connection hole 7 After the ring 13 and 13 'are filled in the outer diameter of the ring, the space 6 and 6' and the injection hole 7 are filled with a slight difference to prevent breakage or cracking of the magnet due to the injection pressure. You can do it.

특히 본 발명은 자석의 물성 즉 경도 재질에 구애됨이 없이 금형제작이 가능하며, 링(13)(13')에 형성된 분리공간(14)(1')을 이용해서 링(13)(13')를 손쉽게 제거할 수가 있게 되는 것이다.In particular, the present invention is capable of manufacturing a mold without regard to the physical properties of the magnet, that is, the hardness material, ring 13, 13 'by using the separation space 14 (1') formed in the ring (13, 13 '). ) Can be easily removed.

Claims (1)

분할형 상하 금형(1)(1')의 양쪽에 자석 고정홀(2)(2')과 중심부에 축 고정홀(3) 및 사출물 연결홀(7)을 구비하고 상기 상부 금형(1)의 중앙부에서 상기 사출물 연결홀(7)로 연통되는 사출물 유입공(8)과 중앙부 사출공(12")이 직선상으로 연통되는 공지의 모우터용 회전자 제조용 금형에 있어서, 상기 자석 고정홀(2)(2')의 중간부에 사출물이 자석의 외경을 감쌀 수 있게 한 링 성형홀(10)(10')을 요설하고 상기 링 성형홀(10)(10')의 적당한 위치에는 링 성혈홀의 깊이와 같은 사출물 단절벽(11)(11')을 두고 상기 사출물 유입공(8)과 상기 중앙부 사출공(12")이 만나는 위치의 양쪽으로 상기 링 성형홀(10)(10')과 연통되는 사출물 분리공(12)(12')은 사출물 유입공(8)로부터의 길이가 중앙부 사출공(12") 보다 짧게 형성하여서 된 것을 특징으로 한 모우터용 회전자(ROTOR) 제조용 금형.Magnetic fixing holes 2 and 2 'on both sides of the split upper and lower molds 1 and 1' and a shaft fixing hole 3 and an injection molding connecting hole 7 in the center thereof are provided. In a well-known motor rotor manufacturing mold in which an injection inlet hole 8 and a central injection hole 12 "communicating in the center part to the injection connection hole 7 are linearly communicated, the magnet fixing hole 2 is provided. Ring forming holes 10 and 10 'are formed in the middle of (2') to allow the injection molding to wrap the outer diameter of the magnet, and at the proper position of the ring forming holes 10 and 10 ', the depth of the ring blood hole is In communication with the ring forming hole (10) (10 ') at both sides of the position where the injection inlet hole (8) and the central injection hole (12 ") meets with the injection-molded wall (11, 11') such as Injection molding holes 12, 12 'is a gold for manufacturing a rotor (ROTOR), characterized in that the length from the injection molding inlet hole (8) is formed shorter than the central injection hole (12 ") brother.
KR1019930013320A 1993-07-15 1993-07-15 Preperation method of the rotor for motor KR960016213B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930013320A KR960016213B1 (en) 1993-07-15 1993-07-15 Preperation method of the rotor for motor

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Application Number Priority Date Filing Date Title
KR1019930013320A KR960016213B1 (en) 1993-07-15 1993-07-15 Preperation method of the rotor for motor

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KR950004697A KR950004697A (en) 1995-02-18
KR960016213B1 true KR960016213B1 (en) 1996-12-06

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