JPS62177811A - Manufacture of rectangular insulated wire - Google Patents
Manufacture of rectangular insulated wireInfo
- Publication number
- JPS62177811A JPS62177811A JP2041886A JP2041886A JPS62177811A JP S62177811 A JPS62177811 A JP S62177811A JP 2041886 A JP2041886 A JP 2041886A JP 2041886 A JP2041886 A JP 2041886A JP S62177811 A JPS62177811 A JP S62177811A
- Authority
- JP
- Japan
- Prior art keywords
- resin powder
- synthetic resin
- insulated wire
- rectangular
- coating
- 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 12
- 239000000843 powder Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 25
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 239000004020 conductor Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 3
- 229930003836 cresol Natural products 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 229920003261 Durez Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 101000744152 Naja oxiana Cytotoxin 2 Proteins 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004804 winding Methods 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】
［発明の技術分野］
本発明は、静電粉体塗装法、特に静電流浸漬法による平
角絶縁電線の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing rectangular insulated wires by electrostatic powder coating, particularly by electrostatic dipping.
［発明の技術的背閲とその問題点］
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ぎており、
この中でも塗む効率が高く薄い塗膜を形成させ得る方法
として静電流動浸漬法が絶縁電線′ｔＡ造の分野で特に
脚光をあびつつある。[Technical background of the invention and its problems] In recent years, methods for manufacturing insulated wires using powder coating methods have become pollution-free and
It is attracting attention from the viewpoint of resource saving and energy saving.
Among these methods, the electrostatic dynamic dipping method is attracting attention particularly in the field of insulated wire construction as a method that has high coating efficiency and can form a thin coating film.
この方法は、直流の高電圧を印加された電極間を通過し
た乾燥空気により、合成樹脂粉体に電荷を与えつつこれ
を流動化させ、この雲体状の合成樹脂粉体からなるコー
ティングゾーンを通過する金属導体表面に室温で静電気
的に合成樹脂粉体を付着させた後、付着した合成樹脂粉
体を加熱溶融および硬化させて被膜を形成させる方法で
ある。This method uses dry air passed between electrodes to which a high DC voltage is applied to fluidize the synthetic resin powder while giving it an electric charge, thereby forming a coating zone made of cloud-shaped synthetic resin powder. In this method, synthetic resin powder is electrostatically attached to the surface of a metal conductor passing through it at room temperature, and then the attached synthetic resin powder is heated to melt and harden to form a coating.
しかして金属導体として例えば平角導体を用いこれをコ
ーティングゾーンを水平方向に通過させて塗装を行なう
場合には、平角導体の各側面に形成される絶縁被膜の絶
縁破壊電圧か安定しないという難点がめった。これは平
角絶縁電線の軸方向に治って絶縁破壊電圧を測定すると
その値がバラつき、一部は低い値を示すことからも明ら
かなように被膜厚さが均一でないことに起因しており、
詳細に検問した結果、絶縁被膜表面に生成するビンホー
ルヤ被膜内部に残存するボイドが主原因であることが明
らかとなった。However, when painting is carried out by passing a rectangular conductor horizontally through a coating zone as a metal conductor, the problem is that the dielectric breakdown voltage of the insulating film formed on each side of the rectangular conductor is rarely stable. . This is due to the fact that the coating thickness is not uniform, as is clear from the fact that when the dielectric breakdown voltage is measured in the axial direction of the rectangular insulated wire, the value varies, and some of the values are low.
As a result of detailed examination, it became clear that the main cause was the voids remaining inside the Vinhole layer coating formed on the surface of the insulating coating.
［発明の目的］
本発明は、上記の知見に基づいてなされたもので、静電
流動浸漬法により平角絶縁電線を製造する場合に、絶縁
破壊電圧を向上せしめることのできる方法を提供するこ
とをその目的とする。[Object of the Invention] The present invention has been made based on the above findings, and an object of the present invention is to provide a method that can improve the dielectric breakdown voltage when manufacturing a rectangular insulated wire by the electrostatic dynamic dipping method. That purpose.
［発明の概要］
本発明は、平角導体を、帯電した合成樹脂粉体を充満さ
せたコーティングゾーンを水平方向に通過させて、その
表面に前記合成樹脂粉体を付着させ、次いで加熱炉に通
過させることにより付着した合成樹脂粉体を融着せしめ
て絶縁被膜を形成する絶縁電線の製造方法において、前
記コーティングゾーン通過後の平角導体を予価加熱して
その表面に付着した合成樹脂粉体を溶融ゼしめた後、前
記合成樹脂粉体の融点より高い温度に加熱した溶剤槽お
よびダイスあるいはローラより成る絞り装置に順次通過
させた後、前記加熱炉に通過させることにより、均一な
厚さの被膜が得られ、かつ被膜内部のボイドの残存率を
低下させることにより絶縁破壊電圧を向上させるように
したものである。[Summary of the Invention] The present invention involves horizontally passing a rectangular conductor through a coating zone filled with charged synthetic resin powder to adhere the synthetic resin powder to its surface, and then passing it through a heating furnace. In the manufacturing method of an insulated wire, in which the synthetic resin powder adhered to the surface is fused to form an insulating film, the rectangular conductor after passing through the coating zone is preheated to melt the synthetic resin powder adhered to the surface of the rectangular conductor. After the gelatinization, the synthetic resin powder is sequentially passed through a solvent bath heated to a temperature higher than the melting point and a squeezing device consisting of a die or roller, and then passed through the heating furnace to form a coating with a uniform thickness. is obtained, and the dielectric breakdown voltage is improved by reducing the residual rate of voids inside the coating.
図は本発明の平角絶縁電線の製造に用いられる製造装置
の概略を示したもので、１はコーティングゾーン（粉体
塗装室）、２は誘導加熱装置、３はクレゾール等の溶剤
を収容した溶剤槽、４はローラより成る絞り装置、５は
加熱炉である。The figure schematically shows the manufacturing equipment used to manufacture the rectangular insulated wire of the present invention, in which 1 is a coating zone (powder coating room), 2 is an induction heating device, and 3 is a solvent containing a solvent such as cresol. A tank, 4 a squeezing device consisting of rollers, and 5 a heating furnace.
図において、心線供給架台６から連続的に送り出された
平角心線Ｗは、ブレーキ装置７を経てコーティングゾー
ン１内でその表面に合成樹脂粉体を付着せしめられ、次
いで誘導加熱装置２で心線が加熱されることにより表面
に付着した合成樹脂粉体が溶融される。In the figure, a rectangular core wire W continuously sent out from a core wire supply frame 6 passes through a brake device 7, has synthetic resin powder adhered to its surface in a coating zone 1, and is then cored in an induction heating device 2. By heating the wire, the synthetic resin powder adhering to the surface is melted.
この溶融合成樹脂層を有する平角導体Ｗ′は、更に合成
樹脂粉体の融点より高い温度に加熱された溶剤槽３を通
過することにより表面のピンホールヤ被膜内部のボイド
が除去された後、加熱炉４を通過することにより均一な
厚さの被膜が形成され、巻取装置８に巻取られる。The rectangular conductor W' having the molten synthetic resin layer is further passed through a solvent bath 3 heated to a temperature higher than the melting point of the synthetic resin powder to remove voids inside the pinhole layer coating on the surface, and then heated in a heating furnace. 4, a film of uniform thickness is formed, and the film is wound up by a winding device 8.
上記の誘導加熱装置２は他の加熱手段、例えば電熱ヒー
タや熱風炉等に置き換えることができ、また溶剤として
はクレゾールの他ＭＭＰ（Ｎ−メチル−２−ピロリドン
〉等を使用することができる。The induction heating device 2 described above can be replaced with other heating means, such as an electric heater or a hot air stove, and as the solvent, MMP (N-methyl-2-pyrrolidone) or the like can be used in addition to cresol.
［発明の実施例］ 以下本発明の実施例について記載する。[Embodiments of the invention] Examples of the present invention will be described below.
実施例１
ＥＣＰ２０８ （住友デュレズ社製エポキシ系合成樹脂
粉体 商品名、融点的７５℃）を以下の条件で帯電させ
、かつ流動化させてコーティングゾーンを形成した。Example 1 ECP208 (epoxy synthetic resin powder, trade name, manufactured by Sumitomo Durez Co., Ltd., melting point: 75° C.) was charged and fluidized under the following conditions to form a coating zone.
帯電電圧 −５５ＫＶ
流動化空気流量 １３０Ｊ２．／＋ｎｉｎ次にこの長さ
７０ＣＴ１１のコーティングゾーン内に２、ＱＸ ５．
ＯＴ［１Ｔｌｌの平角導体を水平方向に３．０ｍ／ｍ
ｉ ｎの速度で通過させて、導体表面に合成樹脂粉体を
付着させ、次いで、エポキシ系樹脂粉体が付着されたこ
の平角導体を誘導加熱して粉体を溶融せしめた後、液温
ｉｏｏ’ｃに保持された長さ３０ ＣＴＩＩのクレゾー
ル溶液槽中を通過させた。更にこの平角導体を一組の上
下ローラ間に通過させて絞った後、炉温４５０°Ｃ炉長
３．５ｍの加熱炉を通して前記樹脂粉体を融着および硬
化させて被膜を形成させた。Charging voltage -55KV Fluidization air flow rate 130J2. /+nin then within this length 70CT11 coating zone 2, QX 5.
OT[1Tll rectangular conductor horizontally 3.0m/m
Synthetic resin powder is adhered to the conductor surface by passing the conductor at a speed of i n, and then the rectangular conductor to which the epoxy resin powder has been adhered is induction heated to melt the powder, and the liquid temperature is ioo It passed through a cresol solution bath of length 30 CTII held at 'c. Further, this rectangular conductor was passed between a set of upper and lower rollers to be squeezed, and then passed through a heating furnace with an oven temperature of 450° C. and an oven length of 3.5 m to fuse and harden the resin powder to form a film.
得られた絶縁電線の被膜の絶縁破壊電圧の測定結果を次
表に示す。The measurement results of the dielectric breakdown voltage of the coating of the obtained insulated wire are shown in the following table.
尚、表中比較例として示したものは、誘導加熱および溶
剤槽の通過をさせることなく、また絞り装置を用いずに
従来通り粉体塗装を行なって得られた絶縁電線について
、絶縁破壊電圧を同様にして測定した結果である。（以
下余白）
以上の測定結果から、平角導体の周囲に絶縁被膜を形成
するにあたり、粉体付析後の平角導体を子猫加熱および
加熱した溶剤中へ通過せしめ、更に溶融した粉体を絞る
ことにより、従来の方法に比べて均一な厚さの被膜を有
する絶縁電線が製造され、し２かｂそσ）ＶｊＺ！を容
易に）瓶！こうことかでさる。In addition, the comparative example in the table shows the dielectric breakdown voltage of an insulated wire obtained by conventional powder coating without induction heating, passing through a solvent bath, and without using a squeezing device. These are the results measured in the same manner. (Left below) From the above measurement results, in order to form an insulating film around a rectangular conductor, it is necessary to heat the rectangular conductor after powder deposition and pass it through a heated solvent, and then squeeze out the molten powder. By this method, an insulated wire with a coating having a more uniform thickness than the conventional method is manufactured, and σ) VjZ! ) bottle! This is a monkey.
［発明のりｊ果］
以Ｊ−説明し・たよう１５本発明の方法によｈ訂゛、被
膜厚のバラつさ゛か少なく電気的特性に優れた絶縁電線
を効率よく装ｊ；穎することが員る。[Results of the invention] As explained below, the method of the present invention makes it possible to efficiently equip insulated wires with less variation in coating thickness and excellent electrical properties. member.
図は本発明の平角絶縁電線の製造方法に１月いｊ″）れ
る製造装置の概略図゛である、。
１・・・・・・・・１」−ディンツノシー〉・２・・・
・・・・・・誘導加熱装首
３・・・・・・・・・溶剤槽
４・・・・−・・・・絞り装置
５・・・・・・・・・ＩＪ［１熱炉
出願人 昭和電線化）賢４・λ、式会？−１
代理人 弁理士 須 山 佐 −
（ばか１名）The figure is a schematic diagram of a manufacturing apparatus used in the method for manufacturing rectangular insulated wires of the present invention.
・・・・・・Induction heating head 3・・・・・・・・・Solvent tank 4・・・・−・・Squeezing device 5・・・・・・・・・IJ [1 Heat furnace application Person Showa Electric Cable) Ken 4・λ, ceremony? -1
Agent Patent Attorney Sasa Suyama - (1 idiot)
Claims (2)
コーティングゾーンを水平方向に通過させて、その表面
に前記合成樹脂粉体を付着させ、次いで加熱炉に通過さ
せることにより付着した合成樹脂粉体を融着せしめて絶
縁被膜を形成する絶縁電線の製造方法において、前記コ
ーティングゾーン通過後の平角導体を予備加熱してその
表面に付着した合成樹脂粉体を溶融せしめた後、前記合
成樹脂粉体の融点より高い温度に加熱した溶剤槽および
ダイスあるいはローラより成る絞り装置に順次通過させ
た後、前記加熱炉に通過させることを特徴とする平角絶
縁電線の製造方法。(1) A rectangular conductor is passed horizontally through a coating zone filled with charged synthetic resin powder to deposit the synthetic resin powder on its surface, and then passed through a heating furnace to deposit the synthetic resin powder. In a method for manufacturing an insulated wire in which an insulating film is formed by fusing resin powder, the rectangular conductor after passing through the coating zone is preheated to melt the synthetic resin powder adhering to its surface, and then the synthetic resin powder is melted. 1. A method for manufacturing a rectangular insulated wire, which comprises sequentially passing through a solvent bath heated to a temperature higher than the melting point of resin powder and a squeezing device consisting of a die or roller, and then passing through the heating furnace.
範囲第１項記載の平角絶縁電線の製造方法。(2) The method for manufacturing a rectangular insulated wire according to claim 1, wherein the preheating is performed by induction heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041886A JPS62177811A (en) | 1986-01-31 | 1986-01-31 | Manufacture of rectangular insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041886A JPS62177811A (en) | 1986-01-31 | 1986-01-31 | Manufacture of rectangular insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62177811A true JPS62177811A (en) | 1987-08-04 |
Family
ID=12026485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2041886A Pending JPS62177811A (en) | 1986-01-31 | 1986-01-31 | Manufacture of rectangular insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62177811A (en) |
-
1986
- 1986-01-31 JP JP2041886A patent/JPS62177811A/en active Pending
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