JPS61231711A - Manufacture of molded coil - Google Patents
Manufacture of molded coilInfo
- Publication number
- JPS61231711A JPS61231711A JP7292885A JP7292885A JPS61231711A JP S61231711 A JPS61231711 A JP S61231711A JP 7292885 A JP7292885 A JP 7292885A JP 7292885 A JP7292885 A JP 7292885A JP S61231711 A JPS61231711 A JP S61231711A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- insulating gas
- furnace
- resin
- molded
- 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.)
- Pending
Links
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
- H01F41/04—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 for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）発明の目的
［産業上の利用分野］
この発明は、例えばモールド変、Ｎｆｌなどに用いるモ
ールドコイルの製造方法に関する。Detailed Description of the Invention (a) Object of the Invention [Field of Industrial Application] The present invention relates to a method of manufacturing a molded coil used for, for example, mold conversion, Nfl, etc.
［従来の技術Ｊ
モールド変に器に用いられるモールドコイルは例えば次
のように製造している。[Prior Art J] Molded coils used in molded appliances are manufactured, for example, as follows.
すなわちコイルを注形金型内に組込んだ後、これをタン
ク内に納め、タンク内を真空引きしながらモールド樹脂
を金型内に流し込んでおこなっている。That is, after the coil is assembled into a casting mold, it is placed in a tank, and the molding resin is poured into the mold while the tank is evacuated.
上記の工程において真空引きをおこなうのはコイル内部
にモールド成形後に残留空気に気泡（ボイド）を残さな
いためである。この気泡が存在するとその部分で放電が
起こりゃすく、これは絶縁破壊の原因となる。しかしな
がら上記のように、真空引きをおこなっても完全な真空
状態とはなりえず、とおしてもボイドが残ってしまい十
分な絶縁信頼性が得られなかった。The purpose of evacuation in the above steps is to prevent air bubbles (voids) from remaining inside the coil after molding. If these air bubbles exist, electrical discharge is likely to occur in that area, which can cause dielectric breakdown. However, as mentioned above, even if vacuuming is performed, a complete vacuum state cannot be achieved, and even if vacuuming is performed, voids remain and sufficient insulation reliability cannot be obtained.
［発明が解決しようとする問題点］
この発明は上記の事情に鑑みてなしたもので、残留ボイ
ドを絶縁ガスに置換せしめ、これにより高い絶縁信頼性
を有するモールドコイルを提供することを目的とする。[Problems to be Solved by the Invention] This invention was made in view of the above circumstances, and aims to replace residual voids with an insulating gas, thereby providing a molded coil with high insulation reliability. do.
（ロ）発明の構成
そしてこの発明は、絶縁ガス雰囲気中においてモールド
成形することを特徴とするものである。(B) Structure of the Invention This invention is characterized by molding in an insulating gas atmosphere.
この発明において用いる前記絶縁ガスは、不活性のＳＦ
６ガス（６フツカイオウガス）やＮ２ガス（窒素ガス）
である。またモールド成形に使用する樹脂は、絶縁性の
エポキシ樹脂やウレタン樹脂に必要に応じて充填剤を混
合したモールド樹脂である。The insulating gas used in this invention is inert SF
6 gas (6 gas) and N2 gas (nitrogen gas)
It is. The resin used for molding is a molding resin made by mixing an insulating epoxy resin or urethane resin with a filler as necessary.
［実施例コ
以下この発明の実施例を図の製造装置とともに説明する
。[Embodiment 1] Embodiments of the present invention will be described below together with the manufacturing apparatus shown in the figure.
その第１工程はコイルを加熱処理および真空処理する工
程である。The first step is a step of heat-treating and vacuum-treating the coil.
この工程においては、コイル（１）をまず金型（′２Ｊ
内にセットし、この金型（２を加熱および真空処理する
ための炉（３）内に納める。次に炉（３）内のヒータ（
４）によって金型（２）を加熱する。この加熱温度は８
０〜１３０℃程度においておこなう。この加熱と同時も
しくはその後に真空引ポンプ（５）により炉（３）内の
真空引きをおこなう。この際の真空度は１ ｍｍ ＨＱ
程度以上の高真空度とするのが好ましい。In this process, the coil (1) is first molded into a mold ('2J
This mold (2) is placed in a furnace (3) for heating and vacuum processing.Next, the heater (3) in the furnace (3) is
4) heat the mold (2). This heating temperature is 8
It is carried out at about 0 to 130°C. Simultaneously with or after this heating, the inside of the furnace (3) is evacuated using a vacuum pump (5). The degree of vacuum at this time is 1 mm HQ
It is preferable to maintain a high degree of vacuum.
上記の真空・加熱処理によってコイル（１）内の空気が
、さらには水分が除去される。The air and moisture inside the coil (1) are removed by the vacuum and heat treatment described above.
次の工程はコイルを絶縁ガス雰囲気中でモールド成形す
る工程である。The next step is to mold the coil in an insulating gas atmosphere.
この工程においては、先ずガスボンベ（７）内の絶縁ガ
スを炉（３）内に導入する。この絶縁ガスの導入により
コイル（１）は絶縁ガス雰囲気中に位置することとなり
、コイル（１）内の空間部が絶縁ガスに置換された状態
となる。In this step, first, the insulating gas in the gas cylinder (7) is introduced into the furnace (3). By introducing this insulating gas, the coil (1) is placed in an insulating gas atmosphere, and the space inside the coil (1) is replaced with the insulating gas.
次にこの状態でポンプ（８）によって樹脂タンク（９）
内のモールド樹脂を金型（２１内に導入する。その後加
圧ポンプ（６）によってさらに絶縁ガスを炉（３）内に
導入して炉（３）内の圧を高める。この際の圧は１〜５
に２４程度とするのが好ましい。この加圧によってコイ
ル（１）内部に残る絶縁ガスの気泡は収縮して内部圧を
高めさらに絶縁性が高くなる。この加圧状態においてヒ
ータ（４）によって加熱されモールド樹脂の硬化がなさ
れる。そして一定時間の後炉（３）内より絶縁ガスを抜
き炉（３）外に搬出し、モールドコイルを金型（２Ｊ内
より取り出す。Next, in this state, the resin tank (9) is pumped by the pump (8).
The molding resin inside is introduced into the mold (21). Then, insulating gas is further introduced into the furnace (3) using the pressure pump (6) to increase the pressure inside the furnace (3). At this time, the pressure is 1-5
It is preferable to set it to about 24. This pressurization causes the insulating gas bubbles remaining inside the coil (1) to contract, increasing the internal pressure and further increasing the insulation. In this pressurized state, the mold resin is heated by the heater (4) and hardened. After a certain period of time, the insulating gas is removed from the furnace (3) and carried out of the furnace (3), and the molded coil is taken out from the mold (2J).
上記のようにして得られたモールドコイルにあっては、
その内部にモールド樹脂が含浸されない未含浸部分が生
じても、この部分は内部圧の高い絶縁ガスが充填された
状態となる。したがって、従来の残留空気の気泡の残る
ものより非常に絶縁信頼性の高い構造となり、高い部分
放電開始電圧を有するものとなる。In the molded coil obtained as above,
Even if there is an unimpregnated portion inside which is not impregnated with the molding resin, this portion will be filled with an insulating gas having a high internal pressure. Therefore, the structure has much higher insulation reliability than the conventional structure in which residual air bubbles remain, and has a high partial discharge inception voltage.
なお、上記の実施例の説明では炉を用いたが、金型自身
を炉と兼用するようにしてもよく、その場合は金型にヒ
ータを直接に設ける構成としてもよい。また、モールド
樹脂を充填後の加圧に際しても、絶縁ガスに代えて空気
などの気体をもって加圧するようにしてもよいのは勿論
である。Although a furnace was used in the description of the above embodiment, the mold itself may also be used as the furnace, and in that case, a heater may be provided directly on the mold. Moreover, when pressurizing after filling the mold resin, it is of course possible to pressurize with a gas such as air instead of the insulating gas.
（ハ）発明の効果
以上詳述の通り、この発明によれば、部分放電開始電圧
が高く、絶縁信頼性の高いモールドコイルが得られる。(C) Effects of the Invention As detailed above, according to the present invention, a molded coil having a high partial discharge inception voltage and high insulation reliability can be obtained.
図はこの発明の製造の際に用いる製造装置の一例を示す
簡略構成図である。
（１）・・・・・・コイル、（′２Ｊ・・・・・・金型
、（コ）・・・・・・炉、 （４）・・・・・・ヒー
タ、（５）・・・・・・真空引ポンプ、 （６）・・
・・・・加圧ポンプ、（′７）・・・・・・ガスボンベ
、 （８）・・・・・・ポンプ、（９）・・・・・・
樹脂タンク。The figure is a simplified configuration diagram showing an example of a manufacturing apparatus used in manufacturing the present invention. (1)...Coil, ('2J...Mold, (K)...Furnace, (4)...Heater, (5)... ...Vacuum pump, (6)...
...pressure pump, ('7) ...gas cylinder, (8) ...pump, (9) ...
resin tank.
Claims (1)
後に前記コイルを絶縁ガス雰囲気中に位置せしめ、モー
ルド樹脂によりモールド成形する工程とからなることを
特徴とするモールドコイルの製造方法。1. A method for manufacturing a molded coil, comprising the steps of heating and vacuum treating the coil, and then placing the coil in an insulating gas atmosphere and molding it with a molding resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7292885A JPS61231711A (en) | 1985-04-05 | 1985-04-05 | Manufacture of molded coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7292885A JPS61231711A (en) | 1985-04-05 | 1985-04-05 | Manufacture of molded coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61231711A true JPS61231711A (en) | 1986-10-16 |
Family
ID=13503506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7292885A Pending JPS61231711A (en) | 1985-04-05 | 1985-04-05 | Manufacture of molded coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61231711A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179341A (en) * | 2011-04-25 | 2011-09-14 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping device |
| CN102810953A (en) * | 2011-06-02 | 2012-12-05 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping device for improving vacuum system |
| CN106102337A (en) * | 2016-08-05 | 2016-11-09 | 江阴市立信智能设备有限公司 | The damp proof antiseptic vacuum press-in coating method of wiring board and equipment thereof |
-
1985
- 1985-04-05 JP JP7292885A patent/JPS61231711A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179341A (en) * | 2011-04-25 | 2011-09-14 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping device |
| CN102810953A (en) * | 2011-06-02 | 2012-12-05 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure paint dipping device for improving vacuum system |
| CN106102337A (en) * | 2016-08-05 | 2016-11-09 | 江阴市立信智能设备有限公司 | The damp proof antiseptic vacuum press-in coating method of wiring board and equipment thereof |
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