JPS5919606B2 - Insulated wire manufacturing equipment - Google Patents
Insulated wire manufacturing equipmentInfo
- Publication number
- JPS5919606B2 JPS5919606B2 JP12328779A JP12328779A JPS5919606B2 JP S5919606 B2 JPS5919606 B2 JP S5919606B2 JP 12328779 A JP12328779 A JP 12328779A JP 12328779 A JP12328779 A JP 12328779A JP S5919606 B2 JPS5919606 B2 JP S5919606B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- core
- plastic
- insulated wire
- core conductor
- 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
Landscapes
- Processes Specially Adapted For Manufacturing Cables (AREA)
Description
【発明の詳細な説明】
15本発明は芯線導体に絶縁被覆を施す絶縁電線製造装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION 15 The present invention relates to an insulated wire manufacturing apparatus for applying an insulation coating to a core conductor.
従来の一般的な絶縁電線製造装置は、主に芯線導体に溶
融樹脂を押出被覆する押出機から成つている。Conventional general insulated wire manufacturing equipment mainly consists of an extruder that extrudes and coats a core wire conductor with molten resin.
この外に特に被覆厚の小さい絶縁電線を製20造するた
め浸漬法及びプラスチック粉末を電着又は静電的に付着
する方法が試みられている。しかし、これらの方法はプ
ラスチック粉末を付着する手段と別個に焼付炉を必要と
していたので設備費が高価であり、また製造装置が複雑
で大型化しそ25の管理が煩雑であつた。更に、これら
の方法では被覆厚の制御は芯線導体の引取速度、電圧等
を制御して行うが、これらはいずれも制御が難しく均一
な被覆厚を得ることが困難であつた。また、浸漬前に芯
線導体を加熱してプラスチック粉末を溶30着すること
も提案されているが、この方法では被覆厚は小さく広範
囲の被覆厚を得ることができなかつた。本発明の目的は
、設備を小型化しその管理が容易で設備費を経済的とす
ることができ、また広範35囲の被覆厚の絶縁電線を得
ることができる絶縁電線製造装置を提供することにある
。In addition to this, in order to manufacture insulated wires with a particularly small coating thickness, attempts have been made to use a dipping method and a method in which plastic powder is electrodeposited or electrostatically attached. However, these methods require a baking furnace separate from the means for attaching the plastic powder, resulting in high equipment costs, and the production equipment is complicated and large, making management of the slit 25 complicated. Furthermore, in these methods, the coating thickness is controlled by controlling the take-up speed, voltage, etc. of the core conductor, but these are all difficult to control and it is difficult to obtain a uniform coating thickness. It has also been proposed to heat the core conductor before dipping to melt and coat the plastic powder, but with this method the coating thickness is small and a wide range of coating thicknesses cannot be obtained. An object of the present invention is to provide an insulated wire manufacturing apparatus that can miniaturize the equipment, make it easy to manage, and reduce equipment costs, and that can produce insulated wires with a wide range of coating thicknesses. be.
本発明の他の目的は、被覆厚を容易に制御するりウーこ
とができる絶縁電線製造装置を提供することにある。Another object of the present invention is to provide an insulated wire manufacturing apparatus that can easily control the coating thickness.
本発明の実施例を図面を参照して詳細にのべると、第1
図は本発明の絶縁電線製造装置10を概略的に示し、こ
の絶縁電線製造装置10は、芯線導体1の走行通路に沿
つて順次間隔をあけて設けられた芯線導体予熱手段12
とプラスチツク溶射手段14と被覆厚制御手段16とを
備えている。Embodiments of the present invention will be described in detail with reference to the drawings.
The figure schematically shows an insulated wire manufacturing apparatus 10 of the present invention, which includes core conductor preheating means 12 provided sequentially at intervals along the running path of the core conductor 1.
, a plastic spraying means 14 and a coating thickness control means 16.
芯線導体予熱手段12は、芯線導体1が貫通する貫通孔
18aを有する加熱コイル18から成つており、芯線導
体1はこの加熱コイル18によつて所定温度まで予熱さ
れる。プラスチツク溶射手段14は、芯線導体1が案内
され入口にダイヤモンド又は超硬合金から成る案内チツ
プ20を有する略円錐形の第1の案内部材22とこの第
1の案内部材22から間隔をあけて設けられ水冷空洞2
4aを有する第2の案内部材24とこの第2の案内部材
24の前面に取付けられ同様に水冷空洞26aを有する
第3の案内部材26と更にこの第3の案内部材26の前
面に取付けられた第4の案内部材28とを備えている。The core conductor preheating means 12 includes a heating coil 18 having a through hole 18a through which the core conductor 1 passes, and the core conductor 1 is preheated to a predetermined temperature by the heating coil 18. The plastic spraying means 14 is provided at a distance from a substantially conical first guide member 22 through which the core conductor 1 is guided and which has a guide tip 20 made of diamond or cemented carbide at its entrance. Water cooling cavity 2
4a and a third guide member 26 attached to the front surface of this second guide member 24 and also having a water cooling cavity 26a and further attached to the front surface of this third guide member 26. A fourth guide member 28 is provided.
第1と第2の案内部材22と24との間には芯線導体1
の進行方向に次第に径方向の内向きに傾斜し第1の案内
部材22から出た芯線導体1の外周に吹付けるようにプ
ラスチツク粉末を圧送するプラくチツク粉末通路30が
形成されている。従つて、予熱されている芯線導体1に
はこのプラスチツク粉末が付着される。また、第1と第
2の案内部材22と24との間にはこのプラスチツク粉
末通路30に連通する材料投入口32を有するカートリ
ツジ34が取付けられている。第2と第3の案内部材2
4と26との間には径方向の環状通路部分36aと芯線
導体1の進行方向に向けて次第に内向きに傾斜する環状
通路部分36bとから成り第2の案内部材24に設けら
れこれらの通路部分に連通する燃料供給口36cを有す
るバーナ36が設けられている。A core conductor 1 is provided between the first and second guide members 22 and 24.
A plastic powder passage 30 is formed that gradually inclines radially inward in the direction of movement of the plastic powder passage 30 for pumping the plastic powder so as to spray it onto the outer periphery of the core conductor 1 coming out from the first guide member 22. This plastic powder is therefore adhered to the preheated core conductor 1. A cartridge 34 having a material input port 32 communicating with the plastic powder passage 30 is mounted between the first and second guide members 22 and 24. Second and third guide members 2
4 and 26, the second guide member 24 is provided with a radial annular passage portion 36a and an annular passage portion 36b that gradually inclines inward in the direction of movement of the core conductor 1. A burner 36 having a fuel supply port 36c communicating with the portion is provided.
燃料供給口36cからプロパンガスと酸素との混合ガス
が供給されて着火されるど環状通路部分36bの出口で
火炎が発生するので芯線導体1に付着されたプラスチツ
ク粉末は溶融され又は硬化反応を起して芯線導体1上に
プラスチツクが溶着される。このように芯線導体1上に
プラスチツクが溶射技術によつて付着され所定の絶縁被
覆が得られる。尚、水冷空洞24a,26aに冷却水が
循環されて案内部材22,24,26,28及びカート
リツジ34の過熱が防止される。第3と第4の案内部材
26と28との間には芯線導体1上の絶縁被覆に冷却空
気を吹付ける冷却媒体通路38が形成され、この冷却媒
体通路は第4の案内部材28に設けられた冷却媒体供給
口38aに連通されている。When a mixed gas of propane gas and oxygen is supplied from the fuel supply port 36c and ignited, a flame is generated at the exit of the annular passage portion 36b, so that the plastic powder attached to the core conductor 1 is melted or a hardening reaction occurs. Then, plastic is welded onto the core conductor 1. In this way, plastic is deposited on the core conductor 1 by the thermal spraying technique to obtain a predetermined insulating coating. Note that cooling water is circulated through the water cooling cavities 24a and 26a to prevent the guide members 22, 24, 26, and 28 and the cartridge 34 from overheating. A cooling medium passage 38 is formed between the third and fourth guide members 26 and 28 for blowing cooling air onto the insulation coating on the core wire conductor 1, and this cooling medium passage is provided in the fourth guide member 28. The cooling medium supply port 38a is connected to the cooling medium supply port 38a.
被覆厚制御手段16は、絶縁被覆が形成された芯線導体
1が貫通する貫通孔40aを有し芯線導体1の軸線方向
に位置調節される金属板40から成つている。The coating thickness control means 16 includes a metal plate 40 having a through hole 40a through which the core conductor 1 having an insulating coating is formed, and whose position is adjusted in the axial direction of the core conductor 1.
貫通孔40aは芯線導体1の進行方向に孔径が次第に小
さくなるテーパの形態をなしているとプラスチツク溶射
の炎の進行方向に絞られるので望ましい。金属板40が
プラスチツク溶射手段14に接近すると、炎の絞りが強
められるので被覆厚は大きくなり、逆に金属板40がプ
ラスチツク溶射手段14から遠ざかると、炎の絞りが弱
められるので被覆厚が小さくなる。尚、符号42は金属
板40の前面に熱伝導関係を保つて取付けられて金属板
40が溶射の炎によつて過熱されるのを防止する水冷管
である。次に上記装置の動作をのべると、芯線導体1は
予熱手段12によつて予熱され、次いでプラスチツク溶
射手段14内に入る。It is preferable that the through-hole 40a has a tapered shape in which the hole diameter gradually decreases in the direction of movement of the core conductor 1, since the flame is narrowed in the direction of movement of the plastic spraying flame. When the metal plate 40 approaches the plastic spraying means 14, the flame aperture becomes stronger and the coating thickness increases; conversely, as the metal plate 40 moves away from the plastic spraying means 14, the flame aperture weakens and the coating thickness decreases. Become. Incidentally, reference numeral 42 denotes a water cooling pipe that is attached to the front surface of the metal plate 40 in a heat conductive manner to prevent the metal plate 40 from being overheated by the flame of thermal spraying. Next, the operation of the above-mentioned apparatus will be described. The core conductor 1 is preheated by the preheating means 12 and then enters the plastic spraying means 14.
このプラスチツク溶射手段14内ではブラスチツク粉末
通路30から吹付けられるプラスチツク粉末が芯線導体
1に付着され、次いでバーナ36からの火炎があてられ
て溶融又は加熱硬化されて絶縁被覆が形成される。既に
のべたように、この絶縁被覆の厚みは金属板40の位置
を調節してバーナ36からの炎の絞りを加減することに
よつて制御される。尚、装置内にプラスチツク粉末が熱
溶融によつて固着されるのを防止するためプラスチツク
粉末圧送用空気は適度に冷却されているのが好ましい。
次に本発明の一例をのべると、被覆材料としで粒度が8
0〜90メツシユの熱可塑件の高圧ポリエチレン粉末を
用い、芯線導体として直径0.65nの銅導体を用いこ
れを200〜240℃に予熱した後、第1図の装置によ
り絶縁被覆を形成した。被覆厚制御手段の金属板は厚み
が20〜30nの黄銅板であり、その貫通孔のテーパ角
は20nであり、プラスチツク溶射手段からの間隔は約
5C1nであつた。この装置によつて得られた絶縁被覆
は約400μの厚みを有し外観は良好であり、絶縁耐圧
はDCl〜1.5Kであり、熱衝撃性、可撓件、耐熱劣
化件も良好であつた。また、被覆材料として熱硬化件の
エポキシ樹脂粉末を用い、芯線導体の予熱温度を120
〜140℃であることを除いて上記と全く同じ条件で絶
縁被覆を得たところ同様の良好な結果が得られた。In the plastic spraying means 14, the plastic powder sprayed from the plastic powder passage 30 is adhered to the core conductor 1, and is then melted or heated and hardened by the flame from the burner 36 to form an insulating coating. As previously mentioned, the thickness of this insulating coating is controlled by adjusting the position of metal plate 40 to reduce or limit the flame from burner 36. Incidentally, in order to prevent the plastic powder from being fixed in the apparatus due to thermal melting, it is preferable that the air for pumping the plastic powder be appropriately cooled.
Next, to describe an example of the present invention, the particle size of the coating material is 8.
A thermoplastic high-pressure polyethylene powder having a mesh size of 0 to 90 was used, and a copper conductor having a diameter of 0.65 nm was used as a core conductor. After preheating the conductor to 200 to 240 DEG C., an insulating coating was formed using the apparatus shown in FIG. The metal plate of the coating thickness control means was a brass plate with a thickness of 20 to 30 nm, the taper angle of the through hole was 20 nm, and the distance from the plastic spraying means was about 5 C1. The insulation coating obtained by this device has a thickness of about 400 μ and a good appearance, a dielectric strength of DCl to 1.5K, and good thermal shock resistance, flexibility, and heat deterioration resistance. Ta. In addition, thermosetting epoxy resin powder was used as the coating material, and the preheating temperature of the core conductor was set to 120℃.
Insulating coatings were obtained under exactly the same conditions as above, except that the temperature was ~140°C, and similar good results were obtained.
尚、第1図の実施例ではプラスチツク溶射手段14が環
状で芯線導体がその中を貫通するようにしたが、第2図
に示すように複数のプラスチツク溶射手段14を芯線導
体1のまわりに放射状に並べてもよい。本発明によれば
、上記のように、芯線導体へのプラスチツク粉末の付着
と溶融又は熱硬化とを同時に行うことができるので設備
が小型化しその管理が容易であり、また被覆厚の制御が
容易であるので良質で広範囲の厚みの絶縁被覆を有する
電線を経済的に得ることができる。In the embodiment shown in FIG. 1, the plastic spraying means 14 is annular and the core conductor passes through it, but as shown in FIG. You can also arrange them in According to the present invention, as described above, since the adhesion of plastic powder to the core conductor and the melting or thermosetting can be performed simultaneously, the equipment can be miniaturized and its management is easy, and the coating thickness can be easily controlled. Therefore, it is possible to economically obtain high-quality electric wires having insulation coatings of a wide range of thicknesses.
第1図は本発明に係る絶縁電線製造装置の概略系統図、
第2図は本発明の装置の変形例の系統図、第3図は第2
図のプラスチツク溶射手段の正面図である。
1・・・・・・芯線導体、10・・・・・・絶縁電線製
造装置、12・・・・・・予熱手段、14・・・・・・
プラスチツク溶射手段、16・・・・・・被覆厚制御手
段、30・・・・・・プラスチツク粉末通路、36・・
・・・・バーナ、40・・・・・・金属板、40a・・
・・・・貫通孔。FIG. 1 is a schematic system diagram of an insulated wire manufacturing apparatus according to the present invention,
Fig. 2 is a system diagram of a modified example of the device of the present invention, and Fig. 3 is a system diagram of a modification of the device of the present invention.
FIG. 3 is a front view of the plastic spraying means shown in the figure; DESCRIPTION OF SYMBOLS 1...Core conductor, 10...Insulated wire manufacturing device, 12...Preheating means, 14...
Plastic spraying means, 16...Coating thickness control means, 30...Plastic powder passage, 36...
...Burner, 40...Metal plate, 40a...
...Through hole.
Claims (1)
体予熱手段とプラスチック溶射手段とを備え、前記プラ
スチック溶射手段は予熱された芯線導体の外周にプラス
チック粉末を吹付けるように圧送するプラスチック粉末
通路と前記芯線導体上のプラスチック粉末に炎を吹付け
るバーナとから成つていることを特徴とする絶縁電線製
造装置。 2 芯線導体の走行通路に沿つて順次配置された芯線導
体予熱手段とプラスチック溶射手段と被覆厚制御手段と
を備え、前記プラスチック溶射手段は予熱された芯線導
体の外周にプラスチック粉末を吹付けるように圧送する
プラスチック粉末通路と前記芯線導体上のプラスチック
粉末に炎を吹付けるバーナとから成り、また前記被覆厚
制御手段は前記プラスチック粉末が付着された芯線導体
が貫通する貫通孔を有し前記芯線導体の軸線方向に位置
調節される金属板から成つていることを特徴とする絶縁
電線製造装置。 3 前記プラスチック溶射手段はその中心を前記芯線導
体が貫通するように配置されている特許請求の範囲第2
項に記載の絶縁電線製造装置。 4 前記プラスチック溶射手段は前記芯線導体のまわり
に放射状に並べて配置されている特許請求の範囲第2項
に記載の絶縁電線製造装置。 5 前記貫通孔は前記芯線導体の進行方向に孔径が小さ
くなつている特許請求の範囲第2項乃至第4項に記載の
絶縁電線製造装置。[Scope of Claims] 1. Core wire conductor preheating means and plastic spraying means are arranged sequentially along the running path of the core wire conductor, and the plastic spraying means sprays plastic powder onto the outer periphery of the preheated core wire conductor. 1. An insulated wire manufacturing device comprising: a passage for pumping plastic powder to the core conductor; and a burner blowing flame onto the plastic powder on the core conductor. 2. A core conductor preheating means, a plastic spraying means, and a coating thickness control means are arranged in sequence along the running path of the core conductor, and the plastic spraying means sprays plastic powder onto the outer periphery of the preheated core conductor. The coating thickness control means has a through hole through which the core conductor to which the plastic powder is adhered passes, and the coating thickness control means has a through hole through which the core conductor to which the plastic powder is adhered passes. An insulated wire manufacturing device comprising a metal plate whose position is adjusted in the axial direction of the insulated wire. 3. The plastic spraying means is arranged so that the core wire conductor passes through its center.
The insulated wire manufacturing device described in 2. 4. The insulated wire manufacturing apparatus according to claim 2, wherein the plastic spraying means are arranged radially around the core wire conductor. 5. The insulated wire manufacturing apparatus according to claim 2, wherein the through hole has a diameter that decreases in the direction of movement of the core conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12328779A JPS5919606B2 (en) | 1979-09-27 | 1979-09-27 | Insulated wire manufacturing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12328779A JPS5919606B2 (en) | 1979-09-27 | 1979-09-27 | Insulated wire manufacturing equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5648010A JPS5648010A (en) | 1981-05-01 |
JPS5919606B2 true JPS5919606B2 (en) | 1984-05-08 |
Family
ID=14856818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12328779A Expired JPS5919606B2 (en) | 1979-09-27 | 1979-09-27 | Insulated wire manufacturing equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5919606B2 (en) |
-
1979
- 1979-09-27 JP JP12328779A patent/JPS5919606B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5648010A (en) | 1981-05-01 |
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