JPH048886B2 - - Google Patents
Info
- Publication number
- JPH048886B2 JPH048886B2 JP9568482A JP9568482A JPH048886B2 JP H048886 B2 JPH048886 B2 JP H048886B2 JP 9568482 A JP9568482 A JP 9568482A JP 9568482 A JP9568482 A JP 9568482A JP H048886 B2 JPH048886 B2 JP H048886B2
- Authority
- JP
- Japan
- Prior art keywords
- rectangular
- synthetic resin
- resin powder
- conductor
- powder
- 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
- 239000000843 powder Substances 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 23
- 229920003002 synthetic resin Polymers 0.000 claims description 21
- 239000000057 synthetic resin Substances 0.000 claims description 21
- 238000009503 electrostatic coating Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 238000004804 winding Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- -1 polyethylenes Polymers 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Description
［発明の技術分野］
本発明は、絶縁被覆の施されていない面を有す
る平角エナメル線の製造方法に関する。
［発明の技術的背景］
第１図に示すように、平角導体Ｃ上に絶縁塗料
の塗布、焼付けにより形成された絶縁被膜Ｉを有
する平角エナメル線Ｗは、複数段積み重ねて構成
された巻線として使われることが多い。したがつ
て電装部品のスターターのようにそのスペースフ
アクターの向上が特に必要な所では、その絶縁被
膜を極めて薄く、できれば50μm以下にすること
が望まれている。
［背景技術の問題点］
しかし現在の静電塗装法の技術では、絶縁被膜
を50μmとすることはは非常に難しく特に静電流
動浸漬法により、これより薄い塗膜を形成するこ
とは極めて困難である。しかも第１図の巻線の構
造から明らかなように、平角エナメル線の重ね合
わされる面の絶縁被膜の厚さは１本で使用する場
合に比べて倍加されることになり、このことも巻
線のスペースフアクターの低下をもたらす大きな
要因となつている。
この対策として紙絶縁の場合には平角線の外周
にその１面を露出させて絶縁紙を縦浴えし、絶縁
紙が２層にならないようにしたものが知られてい
るがエナメル線の場合には平角線の一面だけを残
して絶縁することは技術的に困難であり、このよ
うな平角線は得られていない。
［発明の目的］
本発明は上記の事情に基づきなされたもので、
少なくとも一面に絶縁被覆を有しない平角エナメ
ル線を容易に製造し得る平角エナメル線の製造方
法を提供することを目的とする。
［発明の概要］
本発明は、平角導体の全周面に静電塗装により
合成樹脂粉体を被着させる工程と、この被着した
合成樹脂粉体を前記平角導体の一部の面から除去
する工程と、この合成樹脂粉体を除去した平角導
体を加熱して合成樹脂粉体を融着させる工程とを
含むことを特徴とする平角エナメル線の製造方法
に関する。
［発明の実施例］
以下本発明を図面により詳細に説明する。
第２図は本発明方法の一実施例の概略を示すブ
ロツク図である。
第２図において、導体供給ボビン１から供給さ
れた平角導体Ｃの外周には静電塗装部２において
合成樹脂粉体が被着されている。次いでその少な
くとも１つの面に被着された合成樹脂粉体が粉体
除去部３で除去され、続いて焼付炉４で加熱され
て平角導体の残りの面に被着されている合成樹脂
粉体が加熱融着されて、冷却固化されて巻取ボビ
ン５に巻取られる。
第３図は上述の合成樹脂粉体を除去する工程の
状況を図示した斜視図である。すなわち静電塗装
部２において外周に合成樹脂粉体が被着された平
角導体は、粉体除去部３において粉体除去が必要
な部分にたとえば合成樹脂板６があてられて、そ
の部分の粉体が払拭除去される。なお、合成樹脂
粉体の除去は第３図に示す例では樹脂製除去板６
により行なつたが、除去板の使用に代えて静電塗
装の前の段階で平角導体の少なくとも１つの面を
除いてマスキングしておき、静電塗装部において
残りの面に合成樹脂粉体を被着させて加熱融着さ
せるようにしてもよい。
なお前者の方法では除去した合成樹脂粉体を回
収するため粉体集塵装置を設置することが望まし
い。これにより収集した合成樹脂粉体の再利用が
可能となる。
本発明方法の使用に適する合成樹脂粉体として
は、エポキシ樹脂、ポリエステル樹脂、ポリエチ
レン等熱硬化性樹脂および熱可塑性樹脂のいずれ
も使用可能である。
次に実施例について、本発明をさらに詳細に説
明する。
実施例
平角導体として2.4mm×8.0mmの銅平角線を使用
して第２図に示した工程で平角エナメル線を製造
した。静電塗装にはエレクトロスタテイツク社製
の静電流動浸漬塗装装置（Model−300）を使用
し、流動化空気60／min、荷電用電圧−59KV
の条件の下で平角導体の外周にエポキシ樹脂粉体
（スリーエム社製、商品名Scotch cast）を被着さ
せた。なおこのときの平角導体の線速は3.3ｍ／
minである。
次に合成樹脂製除去板により平角導体の面に被
着した合成樹脂粉体を掻き取つて除去した。続い
て焼付炉で、平角導体の粉体除去面を除いて残り
の面の被着粉体を平角導体上に焼付けた。
なお、焼付炉は炉長3mのものを２本直列させ
て使用し、炉入口の温度320℃、炉出口の温度420
℃に設定した。第４図ａ〜ｄはこのようにして得
られた平角エナメル線Ｗの断面図であり、絶縁被
膜Ｉの厚さは平均100μmである。
次に本発明により得られた平角エナメル線の使
用例について説明する。
第５図，，は上記の方法で得られた平角
エナメル線Ｗの使用例を示した断面図で、は平
角エナメル線として第４図ｂのものを使用した
例、は第４図ｃのものを使用した例、は第４
図ｄのものを使用した例をそれぞれ示している。
なお上記の使用例において平角エナメル線Ｗの
外側に面する絶縁被膜の欠如ないし不完全な部分
は絶縁フイルムで被覆してある。
第４図に示した平角エナメル線をそれぞれ第５
図に示した方法で50列50段積み重ねてその高さ
（l1）および幅（l2）を第１図に示した従来のもの
と比較した。その結果を次表に示す。なお、使用
した平角エナメル線は、導体寸法2.4×8.0mm、絶
縁被膜厚さ0.1mm、絶縁フイルム厚さ0.15mmのも
のである。
[Technical Field of the Invention] The present invention relates to a method for manufacturing a rectangular enameled wire having a surface without an insulation coating. [Technical Background of the Invention] As shown in FIG. 1, a rectangular enamelled wire W having an insulating coating I formed by coating and baking an insulating paint on a rectangular conductor C is a winding constructed by stacking multiple stages. It is often used as. Therefore, in places where it is particularly necessary to improve the space factor, such as starters for electrical components, it is desired that the insulating coating be extremely thin, preferably 50 μm or less. [Problems in the background technology] However, with current electrostatic coating technology, it is extremely difficult to form an insulating film with a thickness of 50 μm.In particular, it is extremely difficult to form a film thinner than this using the electrostatic dynamic dipping method. It is. Moreover, as is clear from the structure of the winding shown in Figure 1, the thickness of the insulating coating on the surface where the rectangular enamelled wire is overlapped is doubled compared to when one wire is used, and this also applies to the winding. This is a major factor in reducing the space factor of the line. As a countermeasure for this, it is known that in the case of paper insulation, one side of the insulating paper is exposed on the outer periphery of the rectangular wire and the insulating paper is bathed vertically so that the insulating paper does not form two layers, but in the case of enamelled wire It is technically difficult to insulate only one side of a rectangular wire, and such a rectangular wire has not been obtained. [Object of the invention] The present invention was made based on the above circumstances, and
It is an object of the present invention to provide a method for manufacturing a rectangular enameled wire that can easily manufacture a rectangular enameled wire that does not have an insulating coating on at least one surface. [Summary of the Invention] The present invention comprises a step of depositing synthetic resin powder on the entire circumferential surface of a rectangular conductor by electrostatic coating, and removing the deposited synthetic resin powder from a part of the surface of the rectangular conductor. The present invention relates to a method for manufacturing a rectangular enameled wire, which comprises the steps of: heating the rectangular conductor from which the synthetic resin powder has been removed to fuse the synthetic resin powder. [Embodiments of the Invention] The present invention will be described in detail below with reference to the drawings. FIG. 2 is a block diagram schematically showing an embodiment of the method of the present invention. In FIG. 2, synthetic resin powder is applied to the outer periphery of a rectangular conductor C supplied from a conductor supply bobbin 1 in an electrostatic coating section 2. As shown in FIG. Next, the synthetic resin powder deposited on at least one surface of the rectangular conductor is removed by a powder removal section 3, and then heated in a baking furnace 4 to remove the synthetic resin powder deposited on the remaining surface of the rectangular conductor. is heated and fused, cooled and solidified, and wound onto the winding bobbin 5. FIG. 3 is a perspective view illustrating the process of removing the synthetic resin powder described above. In other words, a rectangular conductor whose outer periphery is coated with synthetic resin powder in the electrostatic coating section 2 is coated with a synthetic resin plate 6, for example, at the part where the powder needs to be removed in the powder removing section 3, and the powder in that part is removed. The body is wiped away. In addition, in the example shown in FIG. 3, the synthetic resin powder is removed using the resin removal plate 6.
However, instead of using a removal plate, at least one surface of the rectangular conductor was masked before electrostatic coating, and synthetic resin powder was applied to the remaining surface in the electrostatic coating area. Alternatively, the material may be adhered and heat-fused. In the first method, it is desirable to install a powder dust collector to collect the removed synthetic resin powder. This makes it possible to reuse the collected synthetic resin powder. As the synthetic resin powder suitable for use in the method of the present invention, any of thermosetting resins and thermoplastic resins such as epoxy resins, polyester resins, and polyethylenes can be used. Next, the present invention will be described in more detail with reference to Examples. Example A rectangular enamelled wire was manufactured by the process shown in FIG. 2 using a 2.4 mm x 8.0 mm rectangular copper wire as a rectangular conductor. For electrostatic coating, an electrostatic dynamic immersion coating device (Model-300) manufactured by Electrostatik was used, with fluidizing air 60/min and charging voltage -59KV.
Epoxy resin powder (manufactured by 3M Co., Ltd., trade name: Scotch cast) was deposited on the outer periphery of the rectangular conductor under the following conditions. The linear speed of the rectangular conductor at this time is 3.3 m/
It is min. Next, the synthetic resin powder adhering to the surface of the rectangular conductor was scraped off using a synthetic resin removal plate. Subsequently, in a baking furnace, the deposited powder on the remaining surfaces of the rectangular conductor except for the surface from which the powder had been removed was baked onto the rectangular conductor. In addition, two baking furnaces with a length of 3 m are used in series, and the temperature at the furnace inlet is 320℃ and the temperature at the furnace outlet is 420℃.
It was set at ℃. FIGS. 4a to 4d are cross-sectional views of the rectangular enameled wire W thus obtained, and the thickness of the insulating coating I is 100 μm on average. Next, an example of use of the rectangular enameled wire obtained by the present invention will be described. Figures 5 and 5 are cross-sectional views showing examples of the use of the rectangular enameled wire W obtained by the above method. An example using
An example using the one shown in Fig. d is shown. In the above usage example, the missing or incomplete portions of the insulating coating facing the outside of the rectangular enameled wire W are covered with an insulating film. The rectangular enameled wire shown in Fig. 4 is
They were stacked in 50 rows and 50 stages using the method shown in the figure, and their height (l 1 ) and width (l 2 ) were compared with the conventional one shown in FIG. The results are shown in the table below. The rectangular enamelled wire used had conductor dimensions of 2.4 x 8.0 mm, insulation coating thickness of 0.1 mm, and insulation film thickness of 0.15 mm.
【表】
表から明らかなように、本発明方法で得た平角
エナメル線を用いた巻線のスペースフアクターが
従来のものに比べ著しく向上している。
［発明の効果］
以上説明したように、本発明によればスペース
フアクターの向上した平角エナメル線を容易に、
かつ経済的に製造することができる。[Table] As is clear from the table, the space factor of the winding using the rectangular enamelled wire obtained by the method of the present invention is significantly improved compared to the conventional one. [Effects of the Invention] As explained above, according to the present invention, a rectangular enameled wire with improved space factor can be easily manufactured.
and can be produced economically.
第１図は従来の平角エナメル線の使用例を示す
断面図、第２図は本発明方法の工程図、第３図は
第２図に示した粉体除去部において除去板による
粉体除去の状況を示す図、第４図ａ〜ｄは本発明
方法で得られた平角エナメル線の横断面図例、第
５図〜はその使用例を示す図である。
Ｃ…平角導体、Ｉ…絶縁被膜、Ｗ…平角エナメ
ル線、１…導体供給ボビン、２…静電塗装部、３
…粉体除去部、４…焼付炉、５…巻取ボビン、６
…除去板、７…集塵パイプ、８…絶縁フイルム。
Fig. 1 is a cross-sectional view showing an example of the use of a conventional rectangular enameled wire, Fig. 2 is a process diagram of the method of the present invention, and Fig. 3 is a diagram of powder removal by a removal plate in the powder removal section shown in Fig. 2. Figures 4a to 4d are cross-sectional views of rectangular enamelled wire obtained by the method of the present invention, and Figures 5 to 5 are views showing examples of its use. C...Flat conductor, I...Insulating coating, W...Flat enameled wire, 1...Conductor supply bobbin, 2...Electrostatic coating section, 3
... Powder removal section, 4... Baking furnace, 5... Winding bobbin, 6
...Removal plate, 7. Dust collection pipe, 8. Insulating film.
Claims (1)
粉体を被着させる工程と、この被着した合成樹脂
粉体を前記平角導体の一部の面から除去する工程
と、この合成樹脂粉体を除去した平角導体を加熱
して合成樹脂粉体を融着させる工程とを含むこと
を特徴とする平角エナメル線の製造方法。1 A step of depositing synthetic resin powder on the entire circumferential surface of the rectangular conductor by electrostatic coating, a step of removing the deposited synthetic resin powder from a part of the surface of the rectangular conductor, and a step of applying the synthetic resin powder to the entire circumferential surface of the rectangular conductor. 1. A method for producing a rectangular enamelled wire, comprising the step of heating a rectangular conductor from which a body has been removed to fuse synthetic resin powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9568482A JPS58214221A (en) | 1982-06-04 | 1982-06-04 | Method of producing flat enameled wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9568482A JPS58214221A (en) | 1982-06-04 | 1982-06-04 | Method of producing flat enameled wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58214221A JPS58214221A (en) | 1983-12-13 |
| JPH048886B2 true JPH048886B2 (en) | 1992-02-18 |
Family
ID=14144315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9568482A Granted JPS58214221A (en) | 1982-06-04 | 1982-06-04 | Method of producing flat enameled wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58214221A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636923A (en) * | 1992-07-20 | 1994-02-10 | Railway Technical Res Inst | Ground coil |
-
1982
- 1982-06-04 JP JP9568482A patent/JPS58214221A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58214221A (en) | 1983-12-13 |
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