JPS603765B2 - Manufacturing method of cast coil - Google Patents
Manufacturing method of cast coilInfo
- Publication number
- JPS603765B2 JPS603765B2 JP5568580A JP5568580A JPS603765B2 JP S603765 B2 JPS603765 B2 JP S603765B2 JP 5568580 A JP5568580 A JP 5568580A JP 5568580 A JP5568580 A JP 5568580A JP S603765 B2 JPS603765 B2 JP S603765B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- coil
- manufacturing
- resin
- cast coil
- 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
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)
Description
【発明の詳細な説明】
この発明はボィドの発生を防止するようにした注型コィ
ノしの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a cast molding machine that prevents the occurrence of voids.
従釆、コイルを樹脂で成形する注型コイルの製造方法は
、第１図及び第２図に示すような方法が用いられていた
。As a secondary method for manufacturing a cast coil, in which the coil is molded from resin, the method shown in FIGS. 1 and 2 has been used.
即ち、第１図のように、導体１に耐熱性の合成繊維に半
硬化状の樹脂を含浸させたプリプレグ状の絶縁テープ２
を巻回し、この絶縁テープ２が巻かれた導体１でコイル
が形成される。このコイルを所定の温度及び圧力下で一
定寸法に焼き固めた後、所定の金型内に配置し、無機質
の粉体が添加された熱硬化性樹脂３を金型内に注入後、
加熱処理して樹脂を硬化させて第２図に示す注型コイル
を得るようにしている。しかし、上記方法によって製造
された注型コイルには、第２図に示すように、導体に巻
回されたブリプレグ絶縁テープ自体に多数の空隙４を含
有しているため該絶縁テープで処理したコイルを所定の
硬化条件で焼き固めても、前記絶縁層内部の空隙４を無
くすることは困難であった。That is, as shown in FIG. 1, a conductor 1 is made of a prepreg-like insulating tape 2 made of heat-resistant synthetic fiber impregnated with a semi-cured resin.
The conductor 1 with the insulating tape 2 wound thereon forms a coil. After this coil is baked to a certain size under a predetermined temperature and pressure, it is placed in a predetermined mold, and after injecting the thermosetting resin 3 to which inorganic powder has been added into the mold,
The resin is cured by heat treatment to obtain the cast coil shown in FIG. However, as shown in Fig. 2, the cast coil manufactured by the above method contains a large number of voids 4 in the Bripreg insulating tape itself wound around the conductor. Even if the insulating layer was baked and hardened under predetermined curing conditions, it was difficult to eliminate the voids 4 inside the insulating layer.
しかも熱硬化性樹脂３を注入しても空隙４を埋めるまで
樹脂が行きわたらず、樹脂の硬化後はポィドとして残る
。このため、部分放電や絶縁破壊の原因となる欠点があ
った。この発明は上記欠点を除去するためになされたも
ので、導体を巻回しながら相互間に導体の各対向面が所
定の割合で露出するように複数の絶縁部村を挿入し樹脂
で成形するようにした注型コイルの製造方法を提供する
。Moreover, even if the thermosetting resin 3 is injected, the resin does not spread to fill the voids 4, and after the resin hardens, it remains as pods. This has the disadvantage of causing partial discharge and dielectric breakdown. This invention was made to eliminate the above-mentioned drawbacks, and involves inserting a plurality of insulating sections between each other so that each facing surface of the conductor is exposed at a predetermined ratio while winding the conductor, and molding the conductor with resin. Provided is a method for manufacturing a cast coil.
以下、第３図及び第４図に基づいて説明する。The following will explain based on FIGS. 3 and 4.
第８図に示すように、導体１を巻回しながら導体１の表
面に適当な間隔をあげて所定の大きさで所定の厚さの絶
縁部材５を接続しコイル巻さして導体１相互間に所定の
間隔を有し導体１の各対向面が所定の割合で露出したコ
イルを形成する。このように形成されたコイルを所定の
金型内に配置し、熱硬化性樹脂３を注入すると、導体１
は所定の割合で表面が露出しているので、コイルの巻回
しや層間には必ず閉口した空隙が存在している。これに
よって樹脂はコイル各部に行きわたる。その後、加熱に
よる硬化処理で第４図に示すような注型コイルが得られ
る。この発明によれば、導体を巻回しながら相互間に導
体の各対向面が所定の割合で露出するように複数の絶縁
部材を挿入し樹脂で成形するようにしたので、コイル内
部のボィド発生を防止する効果が得られる。As shown in FIG. 8, while winding the conductor 1, insulating members 5 of a predetermined size and thickness are connected to the surface of the conductor 1 at appropriate intervals, and the coil is wound to form a predetermined space between the conductors 1. A coil is formed in which each opposing surface of the conductor 1 is exposed at a predetermined ratio. When the coil thus formed is placed in a predetermined mold and thermosetting resin 3 is injected, the conductor 1
Since the surface of the coil is exposed at a predetermined ratio, there are always closed gaps between the windings of the coil and between the layers. This spreads the resin throughout the coil. Thereafter, a cast coil as shown in FIG. 4 is obtained by a hardening process by heating. According to this invention, while winding the conductor, a plurality of insulating members are inserted between them and molded with resin so that each facing surface of the conductor is exposed at a predetermined ratio, thereby preventing the generation of voids inside the coil. The effect of preventing this can be obtained.
第１図および第２図は従来の製造方法を示す正面図、第
３図及び第４図は発明の実施例を説明する正面図である
。
図において、１は導体、３は樹脂、５は絶縁部材である
。なお、各図中同一符号は同一または相当部分を示す。
第１図
第２図
第３図
第４図1 and 2 are front views showing a conventional manufacturing method, and FIGS. 3 and 4 are front views illustrating an embodiment of the invention. In the figure, 1 is a conductor, 3 is a resin, and 5 is an insulating member. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
所定の割合で露出するように複数の絶縁部材を挿入し樹
脂で成形することを特徴とする注型コイルの製造方法。1. A method for manufacturing a cast coil, which comprises: winding a conductor, inserting a plurality of insulating members between the conductors so that each facing surface of the conductor is exposed at a predetermined ratio, and molding the conductor with resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5568580A JPS603765B2 (en) | 1980-04-23 | 1980-04-23 | Manufacturing method of cast coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5568580A JPS603765B2 (en) | 1980-04-23 | 1980-04-23 | Manufacturing method of cast coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56150814A JPS56150814A (en) | 1981-11-21 |
| JPS603765B2 true JPS603765B2 (en) | 1985-01-30 |
Family
ID=13005748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5568580A Expired JPS603765B2 (en) | 1980-04-23 | 1980-04-23 | Manufacturing method of cast coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603765B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146327U (en) * | 1984-03-09 | 1985-09-28 | ティーディーケイ株式会社 | coil device |
| JPH0627935Y2 (en) * | 1987-02-12 | 1994-07-27 | 三菱電機株式会社 | Coil device |
-
1980
- 1980-04-23 JP JP5568580A patent/JPS603765B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56150814A (en) | 1981-11-21 |
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