JPH0521256A - Method and apparatus for insulating coating of coil - Google Patents
Method and apparatus for insulating coating of coilInfo
- Publication number
- JPH0521256A JPH0521256A JP3201434A JP20143491A JPH0521256A JP H0521256 A JPH0521256 A JP H0521256A JP 3201434 A JP3201434 A JP 3201434A JP 20143491 A JP20143491 A JP 20143491A JP H0521256 A JPH0521256 A JP H0521256A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- insulating resin
- bobbin
- insulating
- wire
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ボビンに導線を巻回し
たコイルに絶縁樹脂を被覆する方法及びその装置に関
し、特に飛行機に用いられる高圧トランスの如く放電し
にくい絶縁構造が求められるコイルの絶縁被覆方法及び
その装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for coating a coil having a wire wound around a bobbin with an insulating resin, and particularly to a coil for which an insulating structure which does not easily discharge like a high voltage transformer used in an airplane is required. The present invention relates to an insulating coating method and an apparatus thereof.
【０００２】[0002]
【従来の技術】高電圧のコイルは高真空に至る途中の低
圧下では放電が起きやすくなる。そのため、約３万〜５
万フィート上空の低圧下で使用される飛行機の高圧トラ
ンス用コイルは、この放電を防ぐために絶縁樹脂で充分
に被覆される必要がある。このような特殊用途のトラン
ス用コイルは量産されず一品毎に製作されるのが通常で
ある。2. Description of the Related Art In a high voltage coil, discharge easily occurs under a low pressure on the way to a high vacuum. Therefore, about 30,000-5
High-voltage transformer coils for airplanes used under low pressure over 10,000 feet must be sufficiently coated with insulating resin to prevent this discharge. Such transformer coils for special purposes are not manufactured in mass, but are usually manufactured individually.
【０００３】まず、図２より、このようなトランス用コ
イルの形状を概略する。１はコイルであり、ボビン２に
導線３を巻回して形成される。このコイル１はボビン２
と共に積層磁心４の中央磁心４ａに嵌入され、この積層
磁心４が他の積層磁心５と接合されてトランスが形成さ
れる。高圧トランスを低圧下で使用する時に、このコイ
ル１を絶縁樹脂で隙間なく被覆する必要がある。しかし
ながら、硬化前の絶縁樹脂は粘度が高いため、コイル１
に充填されない部分が残った状態で被覆されることがあ
り、放電し易くなることがある。特に、ボビン２と接す
る部分の導線３と導線３の隙間には絶縁樹脂が入り込み
にくい。First, the shape of such a transformer coil will be outlined with reference to FIG. Reference numeral 1 is a coil, which is formed by winding a conducting wire 3 around a bobbin 2. This coil 1 is bobbin 2
At the same time, it is fitted into the central magnetic core 4a of the laminated magnetic core 4, and the laminated magnetic core 4 is joined to another laminated magnetic core 5 to form a transformer. When the high voltage transformer is used under a low voltage, it is necessary to coat the coil 1 with an insulating resin without any gap. However, since the insulating resin before curing has a high viscosity, the coil 1
The unfilled part may be coated in a state where it remains, and discharge may be facilitated. In particular, the insulating resin is unlikely to enter the gap between the conductor 3 and the conductor 3 in the portion in contact with the bobbin 2.
【０００４】つぎに、コイルに絶縁樹脂を充分に充填さ
せるための従来の絶縁被覆方法を説明する。まず、導線
をボビンに巻回しコイルを形成した後で、そのコイルを
密閉容器に溜められた硬化前の絶縁樹脂中に浸し、容器
に真空ポンプを接続し、コイルに付着する気泡を真空ポ
ンプで吸引して除去する。つぎに、容器内の絶縁樹脂を
加圧し、樹脂の入り込みにくい部分まで樹脂を充填させ
て被覆していた。その後、被覆された絶縁樹脂を硬化処
理していた。すなわち、細かい隙間に侵入している気泡
を負圧により吸い出し、さらに高圧でその隙間に樹脂を
圧入する真空充填による絶縁被覆方法が行われていた。
また、トランス自体を特殊なオイルに浸し、硬化前の絶
縁樹脂に比較して粘度が低いオイルを細部まで入り込ま
せてコイルを完全に絶縁するオイル充填を用いる場合も
ある。Next, a conventional insulating coating method for sufficiently filling the coil with the insulating resin will be described. First, after winding a wire around a bobbin to form a coil, immerse the coil in the insulating resin before curing stored in a closed container, connect a vacuum pump to the container, and use the vacuum pump to remove bubbles adhering to the coil. Aspirate and remove. Next, the insulating resin in the container was pressurized, and the resin was filled up to the portion where it was difficult for the resin to enter to cover it. After that, the coated insulating resin was cured. That is, an insulating coating method has been performed in which bubbles that have entered the fine gap are sucked out by a negative pressure and then resin is pressed into the gap at a high pressure by vacuum filling.
There is also a case where oil filling is used in which the transformer itself is dipped in a special oil, and oil having a lower viscosity than that of the insulating resin before being hardened is introduced into the details to completely insulate the coil.
【０００５】[0005]
【発明が解決しようとする課題】上述の絶縁樹脂を真空
充填する方法では、特に絶縁樹脂の粘性が高い場合な
ど、コイルの導線に付着する気泡を完全に除去すること
ができず、未充填部分が残り、絶縁不良を起こし易いと
いう問題点を有していた。また、オイル充填を用いる方
法では、コイルを含むトランスを外囲で囲う必要があり
小型軽量化が要請される用途には不向きであった。In the above method of vacuum-filling the insulating resin, it is not possible to completely remove the bubbles adhering to the conductor of the coil, especially when the insulating resin has a high viscosity, and the unfilled portion However, there is a problem that insulation failure is likely to occur. In addition, the method using oil filling is not suitable for applications where it is necessary to enclose a transformer including a coil in an outer space, which requires reduction in size and weight.
【０００６】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、コイルへの絶縁樹脂の充填が完全に行える絶縁
被覆方法及びその装置を提供せんとすることにある。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an insulating coating method and apparatus capable of completely filling a coil with an insulating resin. To provide.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の方法は、ボビンに導線を巻回したコイルに絶縁樹脂を
被覆する方法において、ボビンを硬化前の絶縁樹脂中に
沈め、絶縁樹脂中でボビンに導線を巻回して絶縁樹脂を
充填しつつコイルを形成し、ついでコイルに被覆された
絶縁樹脂を硬化処理するものである。[Means for Solving the Problems] A method for achieving the above-mentioned object is a method of coating an insulating resin on a coil in which a wire is wound around a bobbin, in which the bobbin is immersed in the insulating resin before curing, In order to form a coil while winding a conductive wire around the bobbin and filling the insulating resin, the insulating resin coated on the coil is cured.
【０００８】そのための装置として、硬化前の絶縁樹脂
を溜める容器と、該容器の絶縁樹脂中に突出し、コイル
が巻かれるボビンを支持する回転軸と、該ボビンに至る
導線を所定ピッチで横送りするトラバースと、前記ボビ
ンに至る絶縁樹脂中の線を絞ることにより随伴する気泡
を除去する絞り付ガイドとを備えて成るコイルの絶縁被
覆装置がある。As a device therefor, a container for accumulating the insulating resin before curing, a rotary shaft projecting into the insulating resin of the container and supporting a bobbin around which a coil is wound, and a lead wire leading to the bobbin are laterally fed at a predetermined pitch. There is a coil insulation coating device that includes a traverse and a guide with a squeeze that removes the air bubbles that accompany it by squeezing the wire in the insulating resin that reaches the bobbin.
【０００９】[0009]
【作用】硬化前の絶縁樹脂を溜めた容器中でボビンに導
線を巻回することで、導線と導線との細かい隙間にも絶
縁樹脂が充填される。By winding the conductive wire around the bobbin in the container in which the insulating resin before curing is stored, the insulating resin is filled even in the fine gap between the conductive wires.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。図１は本発明のコイルの絶縁被覆方法に用いら
れる絶縁被覆装置の斜視図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an insulating coating apparatus used in the coil insulating coating method of the present invention.
【００１１】図１において、１はコイル、２はボビン、
３は導線、７は回転軸、８はガイドプーリ、９はトラバ
ース装置、１１，１２は絞り付ガイド、１３は樹脂容
器、１４は巻線供給ボビン、１９は硬化前の絶縁樹脂で
ある。In FIG. 1, 1 is a coil, 2 is a bobbin,
Reference numeral 3 is a conducting wire, 7 is a rotating shaft, 8 is a guide pulley, 9 is a traverse device, 11 and 12 are guides with a throttle, 13 is a resin container, 14 is a winding supply bobbin, and 19 is an insulating resin before curing.
【００１２】樹脂容器１３は上面開放の容器であり、そ
の中に硬化前の絶縁樹脂１９が溜められている。回転軸
７は樹脂容器１３の側面１３ａを貫通して突出し、樹脂
容器１３の外側に設置される駆動モータ１０により回転
する。トラバース装置９は、アーム１５、側面１３ａを
貫通して突出するネジロッド１６、側面１３ａに突設さ
れたロッド１７、樹脂容器１３の外側に設置されるモー
タ１８からなり、アーム１５の下端にガイドプーリ８が
取り付けられている。モータ１８がネジロッド１６を回
転させると、ロッド１７に案内されたブラケット１５が
図の矢印方向に移動し、ガイドプーリ８を経てボビン２
に至る導線１を横送りする。また、導線３がボビン２に
所定ピッチで巻回されるように、駆動モータ１０の回転
と連動したモータ１８の回転となるように、両モータ１
０，１８がコントローラ２０により制御される。絞り付
ガイド１１，１２は固定のスポンジライニングプレート
とバネ付勢等により可動のスポンジライニングプレート
とを対向配置したものであり、巻線供給ボビン１４から
供給される導線３をスポンジ間で絞り、導線３に随伴さ
れる気泡を除去する。The resin container 13 is a container whose upper surface is open, and the insulating resin 19 before being cured is stored therein. The rotating shaft 7 penetrates the side surface 13 a of the resin container 13 and projects, and is rotated by a drive motor 10 installed outside the resin container 13. The traverse device 9 includes an arm 15, a screw rod 16 penetrating and protruding from the side surface 13 a, a rod 17 protruding from the side surface 13 a, and a motor 18 installed outside the resin container 13, and a guide pulley is provided at a lower end of the arm 15. 8 is attached. When the motor 18 rotates the screw rod 16, the bracket 15 guided by the rod 17 moves in the direction of the arrow in the figure, and passes through the guide pulley 8 and the bobbin 2
The conductor 1 leading to is traversed. In addition, the motors 18 are rotated so that the conductor 3 is wound around the bobbin 2 at a predetermined pitch, and the motor 18 is rotated in synchronization with the rotation of the drive motor 10.
Controllers 0 and 18 are controlled. The squeezing guides 11 and 12 are formed by arranging a fixed sponge lining plate and a movable sponge lining plate so as to face each other by a spring bias or the like. The air bubbles associated with 3 are removed.
【００１３】次に、上述した装置を用いた絶縁被覆方法
を、図１より説明する。例えば、絶縁特性に優れている
が粘度の高いエポキシ樹脂をコイルに被覆する場合、硬
化前のエポキシ樹脂の温度を４０〜５０°Ｃに上げ粘度
を低くして、樹脂容器１３に溜める。次に、ゴム手袋を
はめて、巻線供給ボビン１４から供給される導線３をエ
ポキシ樹脂中の絞り付ガイド１１，１２に挟み、トラバ
ース装置９のガイドプーリ８に掛け、導線３を数回巻回
したボビン２を回転軸７に嵌入する。そして、コントロ
ーラ２０により駆動モータ１０及びモータ１８を駆動さ
せて、導線３が所定ピッチで自動的にボビン２に巻回さ
れ、所望する巻数になったところで停止する。導線３の
巻回が終わったボビン２は樹脂容器１３から取り出し
て、炉内で約１００〜１５０°Ｃに加熱すると約４〜５
時間で硬化し、絶縁樹脂が完全に充填されたコイルが得
られる。Next, an insulation coating method using the above-mentioned device will be described with reference to FIG. For example, when the coil is coated with an epoxy resin having an excellent insulating property but a high viscosity, the temperature of the epoxy resin before curing is raised to 40 to 50 ° C. to reduce the viscosity and the resin is stored in the resin container 13. Next, put on rubber gloves, sandwich the conducting wire 3 supplied from the winding supply bobbin 14 between the guides 11 and 12 in the epoxy resin, hang it on the guide pulley 8 of the traverse device 9, and wind the conducting wire 3 several times. The rotated bobbin 2 is fitted into the rotary shaft 7. Then, the drive motor 10 and the motor 18 are driven by the controller 20 so that the conductive wire 3 is automatically wound around the bobbin 2 at a predetermined pitch, and the winding is stopped when the desired number of windings is reached. The bobbin 2 on which the winding of the conducting wire 3 is finished is taken out from the resin container 13 and heated to about 100 to 150 ° C. in a furnace to about 4 to 5
A coil is obtained which cures in time and is completely filled with insulating resin.
【００１４】[0014]
【発明の効果】本発明方法によれば、絶縁樹脂を溜めた
容器中でボビンに導線を巻回するので、ボビンに巻回さ
れた導線と導線との間の細かい隙間にも絶縁樹脂が充填
され、コイルに完全な絶縁樹脂を被覆することができ
る。特に従来の方法では取り扱えなかった粘性が高く絶
縁性に優れた絶縁樹脂を用いることも可能となる。した
がって、この方法で形成された絶縁樹脂コイルは、従来
のオイル充填コイルに代わって使用される可能性もあ
り、トランスの小型軽量化に寄与する。また、本発明装
置は、絶縁樹脂を真空充填するために従来必要であった
真空ポンプや高圧ポンプ等を不用とし、簡単な装置構成
により絶縁樹脂のより完全な被覆を可能とする。According to the method of the present invention, since the conductive wire is wound around the bobbin in the container in which the insulating resin is stored, the insulating resin is filled even in the fine gap between the conductive wire wound around the bobbin. The coil can then be coated with a complete insulating resin. In particular, it becomes possible to use an insulating resin having a high viscosity and an excellent insulating property, which cannot be handled by the conventional method. Therefore, the insulating resin coil formed by this method may be used in place of the conventional oil-filled coil, which contributes to reduction in size and weight of the transformer. Further, the device of the present invention does not require a vacuum pump, a high-pressure pump or the like which has been conventionally required for vacuum filling the insulating resin, and enables a more complete coating of the insulating resin with a simple device configuration.
【図１】本発明のコイルの絶縁被覆方法に用いられる装
置の斜視図である。FIG. 1 is a perspective view of an apparatus used in the coil insulating coating method of the present invention.
【図２】絶縁被覆が施されたコイルを用いたトランスの
分解斜視図である。FIG. 2 is an exploded perspective view of a transformer using a coil with an insulating coating.
２ ボビン ３ 導線 ７ 回転軸 １１，１２ 絞り付ガイド １３ 樹脂容器 １９ 絶縁樹脂 2 bobbins 3 conductors 7 rotation axis 11, 12 Aperture guide 13 resin container 19 Insulating resin
Claims (2)
脂を被覆する方法において、ボビンを硬化前の絶縁樹脂
中に沈め、絶縁樹脂中でボビンに導線を巻回して絶縁樹
脂を充填しつつコイルを形成し、ついでコイルに被覆さ
れた絶縁樹脂を硬化処理することを特徴とするコイルの
絶縁被覆方法。1. A method of coating an insulating resin on a coil having a wire wound around a bobbin, wherein the bobbin is immersed in the insulating resin before being cured, and the wire is wound around the bobbin in the insulating resin to fill the insulating resin. A method for insulating and coating a coil, which comprises forming a coil and then curing the insulating resin coated on the coil.
器の絶縁樹脂中に突出し、コイルが巻かれるボビンを支
持する回転軸と、該ボビンに至る線を所定ピッチで横送
りするトラバースと、前記ボビンに至る絶縁樹脂中の導
線を絞ることにより随伴する気泡を除去する絞り付ガイ
ドとを備えて成るコイルの絶縁被覆装置。2. A container for accumulating the insulating resin before curing, a rotary shaft for supporting a bobbin around which a coil is wound and protruding into the insulating resin of the container, and a traverse for traversing a wire reaching the bobbin at a predetermined pitch. And a guide with a diaphragm for removing air bubbles accompanying the wire by squeezing a wire in the insulating resin reaching the bobbin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3201434A JPH0521256A (en) | 1991-07-15 | 1991-07-15 | Method and apparatus for insulating coating of coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3201434A JPH0521256A (en) | 1991-07-15 | 1991-07-15 | Method and apparatus for insulating coating of coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0521256A true JPH0521256A (en) | 1993-01-29 |
Family
ID=16441028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3201434A Pending JPH0521256A (en) | 1991-07-15 | 1991-07-15 | Method and apparatus for insulating coating of coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521256A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003347145A (en) * | 2002-05-30 | 2003-12-05 | Daishowa Seiki Co Ltd | Wire-wound coil and its manufacturing device |
| CN102699524A (en) * | 2012-05-25 | 2012-10-03 | 武汉华工激光工程有限责任公司 | Method and device for processing multi-head laser disordered and textured roller surface |
-
1991
- 1991-07-15 JP JP3201434A patent/JPH0521256A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003347145A (en) * | 2002-05-30 | 2003-12-05 | Daishowa Seiki Co Ltd | Wire-wound coil and its manufacturing device |
| CN102699524A (en) * | 2012-05-25 | 2012-10-03 | 武汉华工激光工程有限责任公司 | Method and device for processing multi-head laser disordered and textured roller surface |
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