JPH0568938B2 - - Google Patents
Info
- Publication number
- JPH0568938B2 JPH0568938B2 JP58136447A JP13644783A JPH0568938B2 JP H0568938 B2 JPH0568938 B2 JP H0568938B2 JP 58136447 A JP58136447 A JP 58136447A JP 13644783 A JP13644783 A JP 13644783A JP H0568938 B2 JPH0568938 B2 JP H0568938B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- iron core
- mold
- core
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 48
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229920006015 heat resistant resin Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
-
- 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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は電動機に係り、特にステータの製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electric motor, and particularly to a method for manufacturing a stator.
(ロ) 従来技術
一般に、電動機のステータ製造方法としては、
ステータ用鉄板を複数枚かしめて鉄心を形成した
後に、紙又はフイルム状の絶縁材をスロツト部に
手作業にて挿入していた。(b) Prior art In general, the method of manufacturing a stator for an electric motor is as follows:
After a plurality of stator iron plates are caulked to form an iron core, paper or film-like insulating material is manually inserted into the slots.
このような製造方法では手作業による工程が多
く、作業時間がかかり極めて作業能率の悪いもの
であつた。また、近年軸方向の薄さが要求される
ようになりコイルエンドを軸方向に折りまげた場
合、新らたにコイルエンドとステータ面間に絶縁
材の必要性が生じてさらに作業能率が悪くなると
同時に、該絶縁材のずれにより絶縁不良などが発
生する問題点を有していた。 This manufacturing method involves many manual steps, takes a long time, and is extremely inefficient. In addition, in recent years, there has been a demand for thinness in the axial direction, and when the coil end is folded in the axial direction, an additional insulating material is required between the coil end and the stator surface, further reducing work efficiency. At the same time, there is a problem in that poor insulation occurs due to displacement of the insulating material.
これに対して、ステータに絶縁耐熱性の樹脂で
インジエクシヨンモールドを施こす製造方法が提
案されたが、この製造方法では上述の絶縁の問題
は解消されるものの形成工程において鉄心の積厚
のバラツキによる次のような問題点が生じ自動化
が困難であり満足のいくものではなかつた。つま
りステータを形成する鉄板の板厚にはバラツキが
あり、鉄板を複数重さねて形成される鉄心の積厚
にもバラツキが生じるものであつた。従つてイン
ジエクシヨンモールドを行なうと、鉄心の積厚が
小さいときは金型の中で鉄心が確実に固定され
ず、鉄心の積厚が大きいときは金型の押えがきか
ずモールド時にステータの成形不良が生じるもの
であつた。 In response, a manufacturing method has been proposed in which the stator is injected with an insulating heat-resistant resin, but although this manufacturing method solves the above-mentioned insulation problem, the thickness of the iron core increases during the forming process. The following problems arose due to variations, making automation difficult and unsatisfactory. In other words, the thickness of the iron plates forming the stator varies, and the stacked thickness of the iron core formed by stacking a plurality of iron plates also varies. Therefore, when performing injection molding, if the core thickness is small, the core will not be securely fixed in the mold, and if the core thickness is large, the mold will not be able to hold it down and the stator will not be formed during molding. This would have resulted in defects.
(ハ) 発明の目的
本発明は従来の電動機のステータ製造方法に比
べて製造工程を極めて簡略化した製造方法の提供
を目的としたものである。(c) Object of the Invention The object of the present invention is to provide a manufacturing method that greatly simplifies the manufacturing process compared to conventional methods of manufacturing a stator for an electric motor.
(ニ) 発明の構成
本発明による電動機のステータ製造方法は、金
型に鉄心がステータ用鉄板の積圧方向に移動可能
なクリアランスと、このクリアランス内に鉄心の
歯部上もしくはヨーク部上に対称になるように設
けられた少なくとも３個以上のインジエクシヨン
ゲートとを設け、このインジエクシヨンゲートか
ら樹脂を注入し、この注入圧力で鉄心を金型の反
ゲート側に押圧して確実にインジエクシヨンモー
ルドによる絶縁が行なえるようにしたものであ
る。(d) Structure of the Invention The method for manufacturing a stator for an electric motor according to the present invention is such that a mold has a clearance that allows the core to move in the stacking direction of the stator steel plates, and a space within this clearance that is symmetrical over the teeth or yoke of the core. At least three injection exit gates are provided so that the resin is injected through the injection exit gates, and the injection pressure is used to press the iron core toward the opposite side of the mold to ensure injection. This allows insulation to be performed using excision molding.
(ホ) 実施例
以下、本発明の実施例を第１図乃至第６図に基
づいて説明すると、まづ第１図に示すように、１
は硅素鋼板や電磁鋼板を打抜いたステータ用鉄板
であり、歯部２、ヨーク部３、Ｖかしめを行なう
かしめ部４とからなつている。このステータ用鉄
板１を複数枚Ｖかしめ部４でかしめて第２図に示
すような鉄心５を形成する。この鉄心５を第３図
に示すような固定金型６と移動金型７との間に支
持する。この固定金型６には内部に設置した鉄心
５の歯部２の夫々の中心に対応して絶縁耐熱性の
樹脂を注入する６個のゲート８を設けてある。こ
のゲート８の大きさは樹脂の射出圧で鉄心５が均
一に押し付けられる孔径であり、また同時に樹脂
が固まりステータを固定金型６から外す時に容易
に樹脂を切断できる孔径である。また移動金型７
には鉄心５を挿入した時に鉄心５の面と間に所定
のクリアランスが保てるように鉄心当り部９を設
けてある。また１０は樹脂が固まつた後にステー
タを移動金型７から押し出す押し出し棒である。(E) Embodiments Below, embodiments of the present invention will be explained based on FIGS. 1 to 6. First, as shown in FIG.
This is a stator steel plate made by punching out a silicon steel plate or an electromagnetic steel plate, and consists of a tooth portion 2, a yoke portion 3, and a caulking portion 4 for performing V caulking. A plurality of stator iron plates 1 are caulked with a V caulking section 4 to form an iron core 5 as shown in FIG. This iron core 5 is supported between a fixed mold 6 and a movable mold 7 as shown in FIG. This fixed mold 6 is provided with six gates 8 for injecting an insulating heat-resistant resin, corresponding to the centers of the teeth 2 of the iron core 5 installed inside. The size of the gate 8 is such that the iron core 5 is evenly pressed by the injection pressure of the resin, and at the same time, the hole diameter is such that the resin hardens and the resin can be easily cut when the stator is removed from the fixed mold 6. Also, the moving mold 7
A core abutting portion 9 is provided so that a predetermined clearance can be maintained between the surface of the core 5 and the core 5 when the core 5 is inserted. Reference numeral 10 denotes an extrusion rod for extruding the stator from the movable mold 7 after the resin has hardened.
このように鉄心５を固定金型６と移動金型７と
の間に挿入した場合、ステータ用鉄板１の板厚に
バラツキがあると鉄心５の積厚にもバラツキが生
じているものであつた。従つて、固定金型５と移
動金型７とで形成される鉄心５の収納部の深さは
このバラツキを考慮した深さとなつている。 When the iron core 5 is inserted between the fixed mold 6 and the movable mold 7 in this way, if there is variation in the thickness of the stator iron plate 1, there will also be variation in the stacked thickness of the iron core 5. Ta. Therefore, the depth of the accommodating portion of the core 5 formed by the fixed mold 5 and the movable mold 7 is set in consideration of this variation.
この状態で、固定金型６のインジエクシヨンゲ
ート８から絶縁耐熱性の樹脂を注入すると、この
注入圧力が鉄心の一面側にのみ加わりこの注入圧
力で鉄心５が移動金型７の底側に押えつけられ
る。この時、鉄心５は鉄心当り部９に支えられて
移動金型７との間には所定のクリアランスが保持
され、この空間に樹脂が回り込み所定の厚さのモ
ールド層が形成される。尚、この時鉄板１の板厚
のバラツキで鉄心５の積厚が小さい時には、鉄心
５の固定金型６側の面に形成されるモールド層の
厚さが厚くなり、鉄心５の積厚が大きい時には鉄
心５の固定金型６側の面に形成されるモールド層
の厚さが薄く形成されるものである。このように
樹脂をインジエクシヨンゲート８から注入し、樹
脂が充分に固まつた後に、移動金型７を固定金型
５から分離し、押し出し棒１０を押して樹脂でモ
ールドされた鉄心５すなわちステータ１１を取り
出すものである。 In this state, when insulating heat-resistant resin is injected from the injection exit gate 8 of the fixed mold 6, the injection pressure is applied only to one side of the iron core, and this injection pressure causes the iron core 5 to move to the bottom side of the movable mold 7. Being held down. At this time, the core 5 is supported by the core contact portion 9 and a predetermined clearance is maintained between it and the movable mold 7, and the resin flows around this space to form a mold layer of a predetermined thickness. At this time, when the stacking thickness of the iron core 5 is small due to variations in the thickness of the iron plate 1, the thickness of the mold layer formed on the surface of the iron core 5 on the fixed mold 6 side becomes thicker, and the stacking thickness of the iron core 5 increases. When it is large, the thickness of the mold layer formed on the surface of the iron core 5 on the fixed mold 6 side is formed thin. In this way, resin is injected through the injection gate 8, and after the resin has sufficiently hardened, the movable mold 7 is separated from the fixed mold 5, and the extrusion rod 10 is pushed to remove the resin-molded iron core 5, that is, the stator. 11 is taken out.
また第４図乃至第６図には上記の工程で形成さ
れたステータ１１の上面図、断面図、底面図を示
し、１２は鉄心５の上面に形成されたモールド層
であり、このモールド層１２はこの実施例ではス
テータ用鉄板１のバラツキにより鉄心５の積厚が
小さく底面に形成されたモールド層１３より厚く
形成されている。尚、ステータ１１の上面のイン
ジエクシヨンゲート８と対応した位置には樹脂の
注入跡１４があり、さらにステータ１１の底面に
はステータ１１を移動金型７から押し出す押し出
しピン１０が当つた跡１５がある。このようなス
テータ１１の絶縁を必要とする場所には絶縁耐熱
性の樹脂でモールド層が形成され、鉄心５との間
に充分な絶縁距離が保たれている。 Further, FIGS. 4 to 6 show a top view, a sectional view, and a bottom view of the stator 11 formed in the above steps, and 12 is a mold layer formed on the upper surface of the iron core 5. In this embodiment, due to variations in the stator iron plate 1, the stacked thickness of the iron core 5 is small and thicker than the mold layer 13 formed on the bottom surface. Note that there is a resin injection mark 14 on the top surface of the stator 11 at a position corresponding to the injection exit gate 8, and furthermore, there is a mark 15 on the bottom surface of the stator 11 where the extrusion pin 10 for pushing the stator 11 out of the movable mold 7 hit. There is. A mold layer is formed of an insulating heat-resistant resin at a location of the stator 11 that requires insulation, and a sufficient insulation distance from the iron core 5 is maintained.
(ヘ) 発明の効果
以上の如く本発明の電動機のステータ製造方法
は、金型に鉄心がステータ用鉄板の積圧方向に移
動可能なクリアランスと、このクリアランス内に
鉄心の歯部上もしくはヨーク部上に対称になるよ
うに設けられた少なくとも３個以上のインジエク
シヨンゲートとを設け、このインジエクシヨンゲ
ートから樹脂を注入し、この注入圧力で鉄心を金
型の反ゲート側に押圧するので、クリアランスが
鉄心の積厚公差を吸収し、樹脂の注入圧力で鉄心
を金型内に位置決めし、同時に樹脂でモールドす
ることができる。従つて、鉄心を位置決めする工
程が必要なく、同時にこの工具も必要なくステー
タに絶縁処理を施す工程を極めて簡略化できるも
のである。(F) Effects of the Invention As described above, the method for manufacturing a stator for an electric motor of the present invention is such that the mold has a clearance that allows the core to move in the stacking direction of the stator steel plates, and within this clearance, there is a space on the teeth or yoke of the core. At least three or more injection exit gates are provided symmetrically on the top, and resin is injected through the injection exit gates, and the injection pressure presses the iron core toward the opposite side of the mold. , the clearance absorbs the stacking thickness tolerance of the core, and the core can be positioned in the mold by resin injection pressure, and molded with resin at the same time. Therefore, the step of positioning the iron core is not necessary, and at the same time, this tool is not required either, and the step of insulating the stator can be extremely simplified.
第１図は本発明の実施例を示すステータ用鉄板
の正面図、第２図は第１図に示すステータ用鉄板
を積層した鉄心の側面図、第３図は本発明の実施
例を示す金型の断面図、第４図は本発明の実施例
を用いてモールド層を形成したステータの上面
図、第５図は第４図に示すステータのＶ−V′断
面図、第６図は第４図に示すステータの底面図で
ある。
１……ステータ用鉄板、５……鉄心、６……固
定金型、７……移動金型、８……インジエクシヨ
ンゲート、１１……ステータ。
Fig. 1 is a front view of a stator steel plate showing an embodiment of the present invention, Fig. 2 is a side view of an iron core laminated with the stator steel plates shown in Fig. 1, and Fig. 3 is a front view of a stator steel plate showing an embodiment of the present invention. 4 is a top view of a stator in which a mold layer is formed using an embodiment of the present invention; FIG. 5 is a sectional view taken along line V-V' of the stator shown in FIG. 4; and FIG. FIG. 5 is a bottom view of the stator shown in FIG. 4; DESCRIPTION OF SYMBOLS 1... Steel plate for stator, 5... Iron core, 6... Fixed mold, 7... Moving mold, 8... Injection gate, 11... Stator.
Claims (1)
し、この鉄心を金型に収納した後、絶縁耐熱性の
樹脂を金型内に注入して鉄心に絶縁層を形成する
ステータ製造方法において、前記金型には前記鉄
心がステータ用鉄板の積圧方向に移動可能なクリ
アランスと、このクリアランス内の鉄心の歯部上
もしくはヨーク部上に対称になるように設けられ
た少なくとも３個以上のインジエクシヨンゲート
とを有し、このインジエクシヨンゲートから樹脂
を注入し、この注入圧力で鉄心を金型の反ゲート
側に押圧しながら前記絶縁層の成形を行うことを
特徴とする電動機のステータ製造方法。1. In a stator manufacturing method in which a plurality of stator iron plates are laminated to form an iron core, the iron core is housed in a mold, and an insulating heat-resistant resin is injected into the mold to form an insulating layer on the iron core. The mold has a clearance that allows the iron core to move in the stacking direction of the stator iron plates, and at least three or more indicators symmetrically provided on the teeth or yoke of the iron core within this clearance. A stator for an electric motor, characterized in that the insulating layer is formed by injecting resin through the injection gate and pressing the iron core toward the side opposite to the gate of the mold using the injection pressure. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13644783A JPS6026437A (en) | 1983-07-25 | 1983-07-25 | Manufacture of stator of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13644783A JPS6026437A (en) | 1983-07-25 | 1983-07-25 | Manufacture of stator of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6026437A JPS6026437A (en) | 1985-02-09 |
| JPH0568938B2 true JPH0568938B2 (en) | 1993-09-30 |
Family
ID=15175320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13644783A Granted JPS6026437A (en) | 1983-07-25 | 1983-07-25 | Manufacture of stator of motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026437A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07122237B2 (en) * | 1991-02-08 | 1995-12-25 | 株式会社巴川製紙所 | Release paper and manufacturing method thereof |
| JP4351929B2 (en) * | 2004-02-24 | 2009-10-28 | 愛知電機株式会社 | Resin molding method for electric motor and molding die used for resin molding method |
| JP5315639B2 (en) * | 2007-07-25 | 2013-10-16 | トヨタ自動車株式会社 | Resin injection molding method and resin injection mold |
| CN102468701A (en) * | 2010-11-11 | 2012-05-23 | 腾禾精密电机(昆山)有限公司 | Insulating protective sleeve for stator of motor |
| EP4354714A1 (en) * | 2022-10-14 | 2024-04-17 | MAHLE International GmbH | Plastic distribution device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728551A (en) * | 1980-07-26 | 1982-02-16 | Brother Ind Ltd | Insulation treatment for motor |
-
1983
- 1983-07-25 JP JP13644783A patent/JPS6026437A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728551A (en) * | 1980-07-26 | 1982-02-16 | Brother Ind Ltd | Insulation treatment for motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6026437A (en) | 1985-02-09 |
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