JPS63252324A - Manufacture of flat insulated wire - Google Patents
Manufacture of flat insulated wireInfo
- Publication number
- JPS63252324A JPS63252324A JP8638187A JP8638187A JPS63252324A JP S63252324 A JPS63252324 A JP S63252324A JP 8638187 A JP8638187 A JP 8638187A JP 8638187 A JP8638187 A JP 8638187A JP S63252324 A JPS63252324 A JP S63252324A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- chamber
- coating
- synthetic resin
- rectangular
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000843 powder Substances 0.000 claims description 45
- 238000000576 coating method Methods 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 26
- 239000004020 conductor Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 229920003002 synthetic resin Polymers 0.000 claims description 15
- 239000000057 synthetic resin Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920003261 Durez Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010422 painting Methods 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
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は静電粉体塗装法を用いた平角絶縁電線の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a method of manufacturing a rectangular insulated wire using an electrostatic powder coating method.
（従来の技術）
近年、粉体塗装法による絶縁電線の製造方法が、無公害
、省資源、省エネルギーの観点から注目されてきており
、この中でも塗着効率が高い方法として、静電流動浸漬
法が絶縁電線製造の分野で特に脚光をあびつつある。(Conventional technology) In recent years, methods for manufacturing insulated wires using powder coating methods have been attracting attention from the viewpoints of pollution-free, resource-saving, and energy-saving. is attracting attention, especially in the field of insulated wire manufacturing.
この方法は、たとえば下方に配置した多孔板を通うた乾
燥空気により帯電した合成樹脂粉体を流動化させて流動
層を形成し、金属導体をこの流動層上部の合成樹脂粉体
を充満させた粉体塗装室を通して表面に静電気的に合成
樹脂粉体を付着させた後、付着した合成樹脂粉体を加熱
融着および硬化させて被膜を形成させる方法であり、通
常金属導体を粉体塗装室内の水平方向に通す方式がとら
れている。In this method, for example, charged synthetic resin powder is fluidized by dry air passing through a perforated plate placed below to form a fluidized bed, and a metal conductor is filled with the synthetic resin powder above the fluidized bed. This is a method in which synthetic resin powder is electrostatically attached to the surface through a powder coating chamber, and then the attached synthetic resin powder is heated and fused and cured to form a film. A method is adopted in which the wires are passed horizontally.
しかしながら、このような方法で平角絶縁電線を製造す
る場合においては、平角導体の軸方向にわたって均一な
厚さの被膜が得られず、したがって線材としての絶縁破
壊電圧が低いという欠点があった。However, when manufacturing a rectangular insulated wire by such a method, a coating having a uniform thickness cannot be obtained in the axial direction of the rectangular conductor, and therefore the wire has a low dielectric breakdown voltage.
従来、このような絶縁被膜の変動に対しては、硬化後の
絶縁被膜の厚さを測定し、この測定値と設定値との偏差
信号により合成樹脂粉体の帯電電圧を調節することによ
り一定に制御する方法がとられている。Conventionally, such fluctuations in the insulating film can be kept constant by measuring the thickness of the insulating film after curing and adjusting the charging voltage of the synthetic resin powder based on the deviation signal between this measured value and the set value. A method of controlling this has been adopted.
しかしながら、この方法においては粉体塗装室内での粉
体雲の急激な変動によって付着量が変化した場合に応答
が遅れるため、被膜を一定に制御することが困難である
という難点を有する。However, this method has a drawback in that it is difficult to control the coating to be constant because the response is delayed when the amount of coating changes due to rapid fluctuations in the powder cloud in the powder coating room.
（発明が解決しようとする問題点）
本発明は、上記の難点を解決するためになされたもので
、平角導体表面の合成樹脂粉体の付着量が大きく変動し
た場合でも、導体の軸方向に沿う絶縁被膜の厚さを均一
化し得る平角絶縁電線の製造方法を提供することをその
目的とする。(Problems to be Solved by the Invention) The present invention was made to solve the above-mentioned difficulties, and even when the amount of synthetic resin powder adhering to the surface of a rectangular conductor varies greatly, it is possible to maintain the axial direction of the conductor. The object of the present invention is to provide a method for manufacturing a rectangular insulated wire that can uniformize the thickness of the insulation coating along the wire.
［発明の構成］
（問題点を解決するための手段）
すなわち、本発明は水平方向に連続的に走行する平角導
体表面に絶縁被膜を形成する方法であって、導体供給装
置と巻取装置との間に前記平角導体表面に帯電した合成
樹脂粉体を被着させるための粉体塗装室および前記合成
樹脂粉体を溶融硬化させるための加熱炉および冷却室を
順次配置し、前記粉体塗装室と前記加熱炉との間に粉体
吸引室を設け、この粉体塗装室内の圧力を調整すること
により前記平角導体表面の絶縁被膜の厚さを制御するこ
とにより、軸方向に均一な厚さの絶縁被膜が形成される
ようにしたものである。[Structure of the Invention] (Means for Solving the Problems) That is, the present invention is a method for forming an insulating film on the surface of a rectangular conductor that runs continuously in the horizontal direction, which comprises a conductor supply device and a winding device. A powder coating chamber for depositing charged synthetic resin powder on the surface of the rectangular conductor, a heating furnace and a cooling chamber for melting and hardening the synthetic resin powder are sequentially arranged between them, and the powder coating A powder suction chamber is provided between the chamber and the heating furnace, and the thickness of the insulating coating on the surface of the rectangular conductor is controlled by adjusting the pressure inside this powder coating chamber, thereby achieving a uniform thickness in the axial direction. A thin insulating film is formed.
本発明の方法において使用に適する合成樹脂粉体として
は、たとえばエポキシ樹脂、ポリエステル樹脂、ポリエ
チレン等の熱硬化性樹脂および熱可塑性樹脂等がある。Synthetic resin powders suitable for use in the method of the invention include, for example, thermosetting resins and thermoplastic resins such as epoxy resins, polyester resins, and polyethylene.
（作用）
本発明において、均一な被膜厚さが得られる理由は、導
体表面に静電気的に付着した粉体は直ちには電荷を失わ
ないが、付着後の圧力を微調整することにより、その付
着量を制御し得ることによるもので、従来の電圧調整す
る方法に比叙して長さ方向の膜厚の変化を小さくするこ
とができる。(Function) In the present invention, the reason why a uniform film thickness is obtained is that the powder electrostatically adhered to the conductor surface does not immediately lose its charge, but by finely adjusting the pressure after adhesion, it is possible to This is because the amount can be controlled, and the change in film thickness in the longitudinal direction can be made smaller compared to the conventional voltage adjustment method.
（実施例） 以下本発明の一実施例を説明する。(Example) An embodiment of the present invention will be described below.
第１図は本発明の方法を実施するための装置の概略を示
すブロック図であり、図において導体供給ドラム１と巻
取ドラム２との間に平角導体Ｗの走行方向に沿って粉体
塗装室３、粉体の吸引室４、加熱炉５、冷却室６および
外径測定器７が順次配置されており、粉体吸引室４には
排気装置８が接続され室内の圧力を減圧状態で微小変化
させる。FIG. 1 is a block diagram schematically showing an apparatus for carrying out the method of the present invention, and in the figure, powder coating is applied between a conductor supply drum 1 and a winding drum 2 along the running direction of the rectangular conductor W. A chamber 3, a powder suction chamber 4, a heating furnace 5, a cooling chamber 6, and an outer diameter measuring device 7 are arranged in sequence, and an exhaust device 8 is connected to the powder suction chamber 4 to reduce the pressure inside the chamber. Make small changes.
なお、図中符号９はブレーキ装置、１０は制御装置を示
す。In addition, the code|symbol 9 in a figure shows a brake device, and 10 shows a control device.
上記の装置において、導体供給ドラム１から供給された
平角導体Ｗは、粉体塗装室３内でその表面にエポキシ樹
脂等の合成樹脂粉体が被着された後、粉体吸引室４内で
余剰の、すなわち付着力の弱い粉体が除去される０次い
で加熱炉５で加熱されて平角導体上に被着した合成樹脂
粉体が加熱融着され、冷却室６内で冷却固化された後、
巻取ドラム２に巻取られる。冷却後の被膜厚さは外径測
定器７で測定され、その測定信号は制御装置１０へ入力
される。ここで設定値との偏差量が所定範囲外となった
時に制御信号を出力し、この出力値に応じて排気量ｒ！
ｔ８の排気量を調節する。In the above apparatus, the rectangular conductor W supplied from the conductor supply drum 1 is coated with synthetic resin powder such as epoxy resin on its surface in the powder coating chamber 3 and then transferred to the powder suction chamber 4. Excess powder, that is, powder with weak adhesion is removed.Next, the synthetic resin powder deposited on the rectangular conductor is heated in a heating furnace 5 to be heated and fused, and then cooled and solidified in a cooling chamber 6. ,
It is wound up on the winding drum 2. The coating thickness after cooling is measured by an outer diameter measuring device 7, and the measurement signal is input to the control device 10. Here, when the amount of deviation from the set value is outside a predetermined range, a control signal is output, and the displacement r! is determined according to this output value!
Adjust the displacement of t8.
実施例
第２図は上記の装置を用いて製造した場合の絶縁被膜焼
付後の平角絶縁電線の仕上り厚さ変化を示したもので、
この時の製造条件を下記に示す。Example Fig. 2 shows the change in the finished thickness of a rectangular insulated wire after baking the insulation coating when manufactured using the above-mentioned apparatus.
The manufacturing conditions at this time are shown below.
合成樹脂粉体・・・・・・・・・ＥＣＰ２Ｏ８（住友デ
ュレズ社製
エポキシ樹脂粉体名）
平角導体・・・・・・・・・・・・・・・２．Ｏｘ ５
．０（ｎｎ）Ｃｕ被膜厚さ・・・・・・・・・・・・・
・・１００μ信線速・・・・・・・・・・・・・・・・
・・・・・４．５＋ｗ／ｗｉｎ加熱炉温度・・・・・・
・・・・・・５００℃塗装室長・・・・・・・・・・・
・・・・７００ｍｌ１電圧・・・・・・・・・・・・・
・・・・・・・・−６４ｋＶ（一定）流動化空気量・・
・・・・・・・１２５ Ｊ２＃ｇｉｎ粉体吸引室内の圧
力変化・・・２０〜２５＋ｍＩＩＨ２０比較例
実施例の装置の粉体吸引室を配置しないで、合成樹脂粉
体の帯電電圧を調整して平角絶縁電線を製造した場合の
結果を第２図中に同時に示す。Synthetic resin powder・・・・・・ECP2O8 (epoxy resin powder name manufactured by Sumitomo Durez Co., Ltd.) Rectangular conductor・・・・・・・・・・・・2. Ox 5
．． 0(nn) Cu coating thickness・・・・・・・・・・・・
・・100μ line speed・・・・・・・・・・・・・・・・
...4.5+w/win heating furnace temperature...
・・・・・・500℃ painting room manager・・・・・・・・・・・・
・・・700ml 1 voltage・・・・・・・・・・・・
......-64kV (constant) fluidizing air amount...
......125 J2#gin Pressure change in the powder suction chamber...20~25+mIIH20 Comparative example The charging voltage of the synthetic resin powder was adjusted without arranging the powder suction chamber of the apparatus of the example. The results obtained when rectangular insulated wires were manufactured are also shown in FIG.
上記の実施例および比較例から明らかなように、本発明
の方法を用いて製造した平角絶縁を線は、従来の方法に
比較して、その軸方向の被膜厚さが極めて均一に形成さ
れることが明らかである。As is clear from the above Examples and Comparative Examples, the rectangular insulation wire manufactured using the method of the present invention has an extremely uniform coating thickness in the axial direction compared to the conventional method. That is clear.
［発明の効果コ
以上述べたように、本発明の方法によれば、粉体塗装法
により平角絶縁電線を製造する場合に、粉体塗装室の直
後に粉体吸引室を配置し、この室内の圧力を調節するこ
とにより、その軸方向の被膜厚さを均一に制御すること
ができ、かつその方法も簡単である利点を有する。[Effects of the Invention] As described above, according to the method of the present invention, when manufacturing rectangular insulated wires by powder coating, a powder suction chamber is placed immediately after the powder coating chamber, and By adjusting the pressure, the coating thickness in the axial direction can be uniformly controlled, and the method has the advantage of being simple.
第１図は本発明を実施するための装置の概略図、第２図
は本発明の方法および従来の方法を用いて製造された平
角絶縁電線の軸方向の絶縁被膜の厚さ変化を示すグラフ
である。
３・・・・・・・・・粉体塗装室
４・・・・・・・・・粉体吸引室
５・・・・・・・・・加熱炉
６・・・・・・・・・冷却室
７・・・・・・・・・外径測定器
８・・・・・・・・・排気装置FIG. 1 is a schematic diagram of an apparatus for carrying out the present invention, and FIG. 2 is a graph showing changes in the thickness of the insulation coating in the axial direction of rectangular insulated wires manufactured using the method of the present invention and the conventional method. It is. 3...Powder coating room 4...Powder suction chamber 5...Heating furnace 6... Cooling chamber 7...Outer diameter measuring device 8...Exhaust device
Claims (1)
を形成する方法であつて、導体供給装置と巻取装置との
間に前記平角導体表面に帯電した合成樹脂粉体を被着さ
せるための粉体塗装室および前記合成樹脂粉体を溶融硬
化させるための加熱炉および冷却室を順次配置し、前記
粉体塗装室と前記加熱炉との間に粉体吸引室を設け、こ
の粉体吸引室内の圧力を調整することにより前記平角導
体表面の絶縁被膜の厚さを制御することを特徴とする平
角絶縁電線の製造方法。A method for forming an insulating coating on the surface of a rectangular conductor that runs continuously in the horizontal direction, the method comprising: depositing charged synthetic resin powder on the surface of the rectangular conductor between a conductor supply device and a winding device; A powder coating chamber, a heating furnace and a cooling chamber for melting and hardening the synthetic resin powder are arranged in sequence, a powder suction chamber is provided between the powder coating chamber and the heating furnace, and a powder suction chamber is provided between the powder coating chamber and the heating furnace. A method for manufacturing a rectangular insulated wire, characterized in that the thickness of the insulation coating on the surface of the rectangular conductor is controlled by adjusting the pressure in the room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8638187A JPS63252324A (en) | 1987-04-08 | 1987-04-08 | Manufacture of flat insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8638187A JPS63252324A (en) | 1987-04-08 | 1987-04-08 | Manufacture of flat insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63252324A true JPS63252324A (en) | 1988-10-19 |
Family
ID=13885295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8638187A Pending JPS63252324A (en) | 1987-04-08 | 1987-04-08 | Manufacture of flat insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63252324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126375A1 (en) * | 2007-03-30 | 2008-10-23 | The Furukawa Electric Co., Ltd. | Method and apparatus for producing insulated wire |
-
1987
- 1987-04-08 JP JP8638187A patent/JPS63252324A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126375A1 (en) * | 2007-03-30 | 2008-10-23 | The Furukawa Electric Co., Ltd. | Method and apparatus for producing insulated wire |
| JP5441686B2 (en) * | 2007-03-30 | 2014-03-12 | 古河電気工業株式会社 | Insulated wire manufacturing method and apparatus |
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