JP2009245666A - Straight-angle electric wire and manufacturing method therefor, and manufacturing device thereof - Google Patents

Straight-angle electric wire and manufacturing method therefor, and manufacturing device thereof Download PDF

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JP2009245666A
JP2009245666A JP2008088766A JP2008088766A JP2009245666A JP 2009245666 A JP2009245666 A JP 2009245666A JP 2008088766 A JP2008088766 A JP 2008088766A JP 2008088766 A JP2008088766 A JP 2008088766A JP 2009245666 A JP2009245666 A JP 2009245666A
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metal conductors
oxide film
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JP5379393B2 (en
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Katsumi Osada
克己 長田
Hironobu Okuma
啓伸 大隈
Kanichiro Yamamoto
寛一郎 山本
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Furukawa Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a straight-angle electric wire capable of shortening a manufacturing time and reduction in the manufacturing cost, and to provide a manufacturing method, and a manufacturing device for the wire. <P>SOLUTION: The straight-angle electric wire W has a laminated conductor part 3, constituted by laminating a plurality of straight-angle metal conductors 2 in which an oxide film 1 is formed at the outer periphery, and an insulating layer 4 formed to be pushed out and covered at the periphery of the laminated conductor part 3. The oxide film 1 is not a film which is formed naturally, but is formed deliberately at the outer periphery of the straight-angle metal conductor 2 in a furnace, in an oxidation atmosphere. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、平角電線及びその製造方法並びにその製造装置に関し、特に、絶縁皮膜で押出被覆形成された複数の平角金属導体を積層して構成された高周波用の平角電線及びその製造方法並びにその製造装置に関する。   The present invention relates to a flat electric wire, a method for manufacturing the same, and a manufacturing apparatus therefor, and in particular, a high-frequency flat electric wire configured by laminating a plurality of flat metal conductors formed by extrusion coating with an insulating film, a method for manufacturing the same, and a method for manufacturing the same. Relates to the device.

一般に、高周波用の平角電線は、交流モータや高周波電気機器のコイル等に用いられている。   Generally, a rectangular electric wire for high frequency is used for an AC motor, a coil of a high frequency electric device, or the like.

従来の平角電線は、外周に絶縁用のエナメル皮膜が形成された断面方形の平角金属導体を平積みに積層して構成されている（特許文献１、特許文献２及び特許文献３参照）。   A conventional rectangular electric wire is configured by flatly laminating rectangular metal conductors having a rectangular cross section having an insulating enamel film formed on the outer periphery (see Patent Document 1, Patent Document 2, and Patent Document 3).

また、従来の平角電線の製造方法は、例えば特許文献３に示すように、中心導体の外周をエナメル被膜で覆った複数本の平角素線をそれらの矩形断面の長手方向を略水平に寝かせた姿勢で繰り出す平角素線繰出工程と、各平角素線に接合塗料を塗布する接合塗料塗布工程と、塗布後の各平角素線を矩形断面の長手方向が略垂直となるように立てた姿勢に直して垂直に細長いスリットに挿通して積層する平角素線積層工程と、積層後の平角素線束を垂直に細長い溝に挿通して全体の断面形状を整える成形工程とを含むものである。
特開平１１−１１１０６７号公報 特開２００３−０８６０２６号公報 特開２００３−０８６０３６号公報 Further, in the conventional method for producing a rectangular electric wire, for example, as shown in Patent Document 3, a plurality of rectangular strands in which the outer periphery of a central conductor is covered with an enamel coating are laid in a substantially horizontal direction in the longitudinal direction of the rectangular cross section. A flat wire feeding process that feeds out in a posture, a bonding paint application step in which a bonding paint is applied to each flat wire, and a posture in which each rectangular wire after application is placed so that the longitudinal direction of the rectangular cross section is substantially vertical This includes a rectangular wire laminating step in which it is straightly inserted into a thin and long slit and laminated, and a forming step in which the flat wire bundle after lamination is vertically inserted into a long and thin groove to adjust the overall cross-sectional shape.
Japanese Patent Laid-Open No. 11-111067 JP 2003-086026 A JP 2003-086036 A

従来の平角電線及びその製造方法では、平角金属導体の外周にエナメル皮膜を形成しているので、エナメルを焼き付けるための工程及び設備やエナメル皮膜同士を接着するための工程及び設備が必要であり、製造時間及び製造コストがかかるという課題があった。   In the conventional rectangular electric wire and its manufacturing method, since the enamel film is formed on the outer periphery of the rectangular metal conductor, a process and equipment for baking enamel and a process and equipment for bonding the enamel films together are necessary. There existed a subject that manufacturing time and manufacturing cost started.

また平角電線に通電される電流の周波数が高くなると表皮効果により交流抵抗が増加して損失が高くなる現象（以下単に、高周波損失と称する）が見られるが、従来は、それぞれの平角金属導体の絶縁皮膜として最低でも厚さが３μｍ程度はあるエナメル皮膜を使用しているので、その分、導体面積を減少させざるを得ず、高周波損失が大きいという課題もあった。   Moreover, when the frequency of the current passed through the rectangular electric wire is increased, a phenomenon that the AC resistance increases due to the skin effect and the loss increases (hereinafter simply referred to as high-frequency loss) has been observed. Since an enamel film having a thickness of at least about 3 μm is used as the insulating film, there is a problem that the conductor area has to be reduced correspondingly and the high-frequency loss is large.

本発明は、上記課題を解決するためになされたものであり、エナメル皮膜を焼き付けたりエナメル皮膜同士を接着するための材料、工程及び設備が不要となり、それぞれの平角金属導体に極薄い絶縁皮膜を持つ電線を短時間かつ低コストで製造することができ、かつ高周波損失を低減できる平角電線及びその製造方法並びにその製造装置を提供することを目的とする。   The present invention has been made in order to solve the above-described problems. Materials, processes and equipment for baking enamel films or bonding enamel films are not required, and an extremely thin insulating film is formed on each rectangular metal conductor. An object of the present invention is to provide a flat electric wire, a method for manufacturing the same, and a manufacturing apparatus for the same, which can manufacture the electric wire having a short time and at low cost and can reduce high frequency loss.

本発明の平角電線は、外周に酸化皮膜が形成された複数の平角金属導体を厚さ方向に積層して構成された積層導体部と、前記積層導体部の外周に押出被覆形成された絶縁層とを有することを特徴とするものである。   The rectangular electric wire of the present invention includes a laminated conductor portion formed by laminating a plurality of rectangular metal conductors having an oxide film formed on the outer periphery in the thickness direction, and an insulating layer formed by extrusion coating on the outer periphery of the laminated conductor portion. It is characterized by having.

本発明の平角電線の製造方法は、
（１）複数の平角金属導体毎の外周に酸化皮膜を形成する工程と、
（２）前記酸化皮膜が形成された複数の平角金属導体を垂直方向に積層するようにガイドする工程と、
（３）前記積層された平角金属導体の水平方向の両端面を一対の第１のローラで回転可能に挟持するとともに、前記積層された平角金属導体の垂直方向の両端面を一対の第２のローラで回転可能に挟持して、前記積層された平角金属導体を整列させる工程と、
（４）前記整列された平角金属導体の外周に絶縁層となる樹脂を押出被覆する工程と、
を有することを特徴とするものである。 The manufacturing method of the flat electric wire of the present invention is as follows:
(1) forming an oxide film on the outer periphery of each of the plurality of flat metal conductors;
(2) a step of guiding a plurality of flat metal conductors on which the oxide film is formed to be laminated in a vertical direction;
(3) The both ends in the horizontal direction of the stacked flat metal conductors are rotatably held by a pair of first rollers, and the both ends in the vertical direction of the stacked flat metal conductors are paired by a second pair. Aligning the stacked flat metal conductors with a roller so as to be rotatable; and
(4) a step of extruding a resin serving as an insulating layer on the outer periphery of the aligned rectangular metal conductors;
It is characterized by having.

前記工程（３）と前記工程（４）との間に、整列された平角金属導体を伸線加工する工程を有してもよい。   Between the step (3) and the step (4), there may be a step of drawing the aligned flat metal conductors.

本発明の平角電線の製造装置は、
複数の平角金属導体毎の外周に酸化皮膜を形成する酸化皮膜形成手段と、
前記酸化皮膜形成手段により酸化皮膜が形成された複数の平角金属導体を垂直方向に積層するようにガイドするガイド手段と、
前記ガイド手段により積層された平角金属導体の水平方向の両端面を回転可能に挟持する一対の第１のローラと、前記積層された平角金属導体の垂直方向の両端面を回転可能に挟持する一対の第２のローラとを備え、前記積層された平角金属導体を整列させる整列手段と、
前記整列手段により整列された平角金属導体の外周に絶縁層となる樹脂を押出被覆する押出被覆手段と、
を有することを特徴とするものである。 The flat wire manufacturing apparatus of the present invention is
An oxide film forming means for forming an oxide film on the outer periphery of each of the plurality of flat metal conductors;
A guide means for guiding a plurality of rectangular metal conductors having an oxide film formed thereon by the oxide film forming means to be laminated in a vertical direction;
A pair of first rollers for rotatably holding both end faces in the horizontal direction of the flat metal conductors stacked by the guide means, and a pair of the both ends of the vertical metal metal conductors stacked in a vertical direction for rotation. An alignment means for aligning the laminated rectangular metal conductors,
Extrusion coating means for extruding a resin serving as an insulating layer on the outer periphery of the flat metal conductor aligned by the alignment means;
It is characterized by having.

前記第１のローラは駆動圧延用ローラ又はフリーローラであり、前記第２のローラは駆動圧延用ローラであってもよい。   The first roller may be a drive rolling roller or a free roller, and the second roller may be a drive rolling roller.

請求項１に係る発明によれば、それぞれの平角金属導体の絶縁皮膜として該平角金属導体の表面を酸化させて得た酸化皮膜を用いることができ、エナメル皮膜や接着層を必要としないので、エナメル皮膜を焼き付けたりエナメル皮膜同士を接着するための材料、工程及び設備が不要となり、それぞれの平角金属導体に極薄い絶縁皮膜を持つ電線を短時間かつ低コストで製造することができる平角電線及びその製造方法並びにその製造装置を提供することができる。   According to the invention according to claim 1, an oxide film obtained by oxidizing the surface of the flat metal conductor can be used as an insulating film of each flat metal conductor, and no enamel film or adhesive layer is required. A rectangular electric wire that can produce an electric wire having an extremely thin insulating film on each rectangular metal conductor in a short time and at a low cost without the need for materials, processes and equipment for baking enamel films or bonding the enamel films together. The manufacturing method and the manufacturing apparatus can be provided.

請求項２及び４に係る発明によれば、押出被覆する前に、積層された平角金属導体の水平方向の両端面を一対の第１のローラで回転可能に挟持するとともに、積層された平角金属導体の垂直方向の両端面を一対の第２のローラで回転可能に挟持して、積層された平角金属導体を整列させているので、積層導体部の断面形状が安定化する。
特に、酸化皮膜が形成された平角金属導体の場合、表面が滑りやすいので、平角金属導体同士が水平方向（幅方向）にずれやすくなるが、第１のローラ及び第２のローラにより積層された平角金属導体を整列させるので、平角金属導体同士が水平方向（幅方向）にずれることがなくなり、積層導体部の断面形状がより安定化する。 According to the inventions according to claims 2 and 4, before the extrusion coating, the both ends in the horizontal direction of the laminated rectangular metal conductor are rotatably held by the pair of first rollers, and the laminated rectangular metal is laminated. Since both end surfaces in the vertical direction of the conductor are rotatably held by a pair of second rollers and the stacked rectangular metal conductors are aligned, the cross-sectional shape of the stacked conductor portion is stabilized.
In particular, in the case of a flat metal conductor with an oxide film formed, since the surface is slippery, the flat metal conductors are easily displaced in the horizontal direction (width direction), but are laminated by the first roller and the second roller. Since the flat metal conductors are aligned, the flat metal conductors are not displaced in the horizontal direction (width direction), and the cross-sectional shape of the laminated conductor portion is further stabilized.

請求項３に係る発明によれば、整列された平角金属導体の密着性を向上させることができる。   According to the invention which concerns on Claim 3, the adhesiveness of the aligned rectangular metal conductor can be improved.

請求項５に係る発明によれば、積層された平角金属導体をより確実に整列させることができる。   According to the invention which concerns on Claim 5, the laminated flat metal conductor can be aligned more reliably.

以下、本発明の実施の形態について図面を参照して説明する。図１は本発明の実施形態例に係る平角電線を示す断面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a rectangular electric wire according to an embodiment of the present invention.

本発明の実施形態例に係る平角電線Ｗは、外周に酸化皮膜１が形成された４本の平角金属導体２を厚さ方向に積層して構成された積層導体部３と、積層導体部３の外周に押出被覆形成された絶縁層４とを有する。   A flat electric wire W according to an embodiment of the present invention includes a laminated conductor portion 3 formed by laminating four rectangular metal conductors 2 having an oxide film 1 formed on the outer periphery in the thickness direction, and a laminated conductor portion 3. And an insulating layer 4 formed by extrusion coating on the outer periphery.

平角金属導体２は、例えば、銅，銅合金，アルミニウム，アルミニウム合金又はそれら金属の組み合わせ等で作られている。   The flat metal conductor 2 is made of, for example, copper, copper alloy, aluminum, aluminum alloy, or a combination of these metals.

絶縁層４は、例えば、ポリイミド（ＰＩ）、ポリアミドイミド（ＰＡＩ）、ポリカーボネート（ＰＣ）、ポリサルホン（ＰＳＵ）、ポリエチレンテレフタレート（ＰＥＴ）、ポリエーテルエーテルケトン（ＰＥＥＫ）、ポリフェニレンサルファイド（ＰＰＳ）等で作られている。   The insulating layer 4 is made of, for example, polyimide (PI), polyamideimide (PAI), polycarbonate (PC), polysulfone (PSU), polyethylene terephthalate (PET), polyetheretherketone (PEEK), polyphenylene sulfide (PPS), or the like. It has been.

酸化皮膜１は、単に自然に形成される酸化膜を意図するものではなく、それぞれの平角金属導体２の絶縁皮膜として該平角金属導体２の表面を酸化させて得たものである。例えば酸化皮膜１は、酸化雰囲気（大気雰囲気でもよい）中の炉内で平角金属導体２に熱風を吹き掛けたり、アルミニウムであればアルマイト処理やアルマット処理（「メタルコア配線板におけるコア金属と絶縁樹脂の密着性向上」電子材料 Vol.44 No.10（工業調査会2005）参照）を行なうなどにより、平角金属導体２の外周に例えば０．５〜２．５μｍの所定の厚さに形成されたものである。   The oxide film 1 is not intended to be a naturally formed oxide film, but is obtained by oxidizing the surface of the flat metal conductor 2 as an insulating film of each flat metal conductor 2. For example, the oxide film 1 is formed by spraying hot air on the flat metal conductor 2 in a furnace in an oxidizing atmosphere (or an atmospheric atmosphere), or alumite treatment or alumt treatment for aluminum (“core metal and insulating resin in a metal core wiring board”). For example, it was formed on the outer periphery of the flat metal conductor 2 to a predetermined thickness of, for example, 0.5 to 2.5 μm. Is.

本発明の実施形態例に係る平角電線Ｗによれば、エナメル皮膜や接着層を必要としないので、エナメル皮膜を焼き付けたりエナメル皮膜同士を接着するための材料、工程及び設備が不要となり、製造時間の短縮化及び製造コストの低減を図ることができる。   According to the flat electric wire W according to the embodiment of the present invention, since no enamel film or adhesive layer is required, materials, processes and equipment for baking the enamel film or adhering the enamel films are not required, and the manufacturing time Can be shortened and the manufacturing cost can be reduced.

また、酸化皮膜１は、上述の通り意図的に形成された、例えば０．５〜２．５μｍの厚さのある酸化膜であるので、伸線加工等を行っても剥離したり潰れたりしにくく、平角金属導体２同士の絶縁性をある程度確保できる。とくに平角金属導体2をアルミニウムで構成し、アルマット処理により酸化皮膜１を形成した場合には、アルマット処理がアルミニウム材の表面粗化処理であるために平角金属導体２同士の摩擦を大きくすることができ、平角金属導体２同士のずれ防止効果を得ることができるとともに、絶縁層４のアンカー効果も得ることができるので好ましい。   Moreover, since the oxide film 1 is an oxide film having a thickness of, for example, 0.5 to 2.5 μm formed intentionally as described above, the oxide film 1 may be peeled off or crushed even if wire drawing is performed. It is difficult to secure a certain degree of insulation between the rectangular metal conductors 2. In particular, when the flat metal conductor 2 is made of aluminum and the oxide film 1 is formed by an almat treatment, the friction between the flat metal conductors 2 may be increased because the almat treatment is a surface roughening treatment of an aluminum material. This is preferable because the effect of preventing the displacement between the flat metal conductors 2 can be obtained and the anchor effect of the insulating layer 4 can also be obtained.

さらに、平角金属導体２が平角形状をしているので、コイル等の占積率を高くすることができる。   Furthermore, since the rectangular metal conductor 2 has a rectangular shape, the space factor of the coil or the like can be increased.

さらにそれぞれの平角金属導体の絶縁皮膜として極薄い酸化皮膜１を使用しているので、その分、導体面積を確保することができ、高周波損失を低減できる。   Furthermore, since the ultra-thin oxide film 1 is used as the insulating film of each rectangular metal conductor, the conductor area can be secured correspondingly, and high-frequency loss can be reduced.

図２は本発明の実施形態例に係る平角電線Ｗの製造方法及び製造装置を説明するための説明図である。   FIG. 2 is an explanatory diagram for explaining a manufacturing method and a manufacturing apparatus of the flat electric wire W according to the embodiment of the present invention.

図２に示すように、本発明の実施形態例に係る平角電線Ｗの製造装置Ｓは、複数の平角金属導体２毎の外周に酸化皮膜１を形成する酸化皮膜形成部５と、酸化皮膜形成部５により酸化皮膜１が形成された複数の平角金属導体２を垂直方向に積層するようにガイドするガイド部６と、ガイド部６により積層された平角金属導体２の水平方向の両端面を回転可能に挟持する一対の第１のローラ７ａと、積層された平角金属導体２の垂直方向の両端面を回転可能に挟持する一対の第２のローラ７ｂとを備え、積層された平角金属導体２を整列させる整列部７と、整列部７により整列された平角金属導体２の外周に絶縁層４となる樹脂を押出被覆する押出被覆部８とを有する。   As shown in FIG. 2, the manufacturing apparatus S of the flat electric wire W which concerns on the embodiment of this invention is the oxide film formation part 5 which forms the oxide film 1 in the outer periphery for every some flat metal conductor 2, and an oxide film formation. A guide portion 6 for guiding a plurality of flat metal conductors 2 on which the oxide film 1 is formed by the portion 5 to be stacked in the vertical direction, and both horizontal end surfaces of the flat metal conductor 2 stacked by the guide portions 6 are rotated. A pair of first rollers 7a that can be sandwiched, and a pair of second rollers 7b that sandwich both ends of the stacked rectangular metal conductors 2 so as to be rotatable, and are stacked. And an extrusion coating portion 8 for extruding a resin to be the insulating layer 4 on the outer periphery of the flat metal conductor 2 aligned by the alignment portion 7.

酸化皮膜形成部５は、酸化雰囲気中の炉内で平角金属導体２の外周を酸化することにより酸化皮膜１を形成する。平角金属導体２がアルミニウムの場合には、炉中酸化、アルマイト処理、アルマット処理などの酸化皮膜形成処理を施す。   The oxide film forming unit 5 forms the oxide film 1 by oxidizing the outer periphery of the flat metal conductor 2 in a furnace in an oxidizing atmosphere. When the flat metal conductor 2 is aluminum, an oxide film forming treatment such as in-furnace oxidation, alumite treatment, alumite treatment, or the like is performed.

ガイド部６の内部には、複数の平角金属導体２が通る通路６ａが形成されている。通路６ａは、入口６ｂを大きく、出口６ｃを小さくして先細りになるように形成されており、これによって、垂直方向に間隔を隔てた複数の平角金属導体２が積層するようにガイドされる。   A passage 6 a through which a plurality of flat metal conductors 2 pass is formed inside the guide portion 6. The passage 6a is formed such that the inlet 6b is made larger and the outlet 6c is made smaller and tapered so that a plurality of rectangular metal conductors 2 spaced in the vertical direction are guided so as to be laminated.

整列部７の第１のローラ７ａ及び第２のローラ７ｂは、駆動圧延用ローラが用いられ、平角金属導体２を長手方向（矢印方向）に移動させる。なお、第２のローラ７ｂだけ駆動圧延用ローラを用い、第１のローラ７ａをフリーローラにしてもよい。   The first roller 7a and the second roller 7b of the alignment unit 7 are driven rolling rollers, and move the flat metal conductor 2 in the longitudinal direction (arrow direction). Note that only the second roller 7b may be a drive rolling roller, and the first roller 7a may be a free roller.

押出被覆部８は、平角金属導体２を貫通させるダイス８ａと、ダイス８ａ内に絶縁層４となる樹脂を供給するスクリューシリンダ８ｂとを有し、平角金属導体２がダイス８ａ内に挿通され、そこに押出被覆部８を構成する樹脂が押し出されることにより、スクリューシリンダ８ｂから供給された樹脂が平角金属導体２の外周に押出被覆される。   The extrusion coating portion 8 includes a die 8a that penetrates the flat metal conductor 2, and a screw cylinder 8b that supplies a resin that becomes the insulating layer 4 into the die 8a, and the flat metal conductor 2 is inserted into the die 8a. The resin constituting the extrusion coating portion 8 is extruded there, so that the resin supplied from the screw cylinder 8 b is extrusion coated on the outer periphery of the flat metal conductor 2.

次に、本発明の実施形態例に係る平角電線Ｗの製造方法を説明する。   Next, the manufacturing method of the flat electric wire W which concerns on the example of embodiment of this invention is demonstrated.

まず、酸化皮膜形成部５により、複数の平角金属導体２毎の外周に酸化皮膜１を形成する。   First, the oxide film 1 is formed on the outer periphery of each of the plurality of flat metal conductors 2 by the oxide film forming unit 5.

次いで、ガイド部６により、酸化皮膜１が形成された複数の平角金属導体２を垂直方向に積層するようにガイドする。   Next, the guide portion 6 guides the plurality of flat metal conductors 2 on which the oxide film 1 is formed so as to be stacked in the vertical direction.

次いで、整列部７により、積層された平角金属導体２の水平方向の両端面を一対の第１のローラ７ａで回転可能に挟持するとともに、積層された平角金属導体２の垂直方向の両端面を一対の第２のローラ７ｂで回転可能に挟持して、積層された平角金属導体２を整列させる。   Next, the alignment unit 7 sandwiches the horizontal end surfaces of the stacked flat metal conductors 2 so as to be rotatable by the pair of first rollers 7a, and the vertical end surfaces of the stacked flat metal conductors 2 are The stacked rectangular metal conductors 2 are aligned by being rotatably held by a pair of second rollers 7b.

次いで、押出被覆部８により、整列された平角金属導体２の外周に絶縁層４となる樹脂を押出被覆する。これによって、本発明の実施形態例に係る平角電線Ｗが完成する。   Next, a resin that becomes the insulating layer 4 is extrusion coated on the outer periphery of the aligned rectangular metal conductors 2 by the extrusion coating portion 8. Thus, the flat electric wire W according to the embodiment of the present invention is completed.

なお、整列部７と押出被覆部８との間で、整列された平角金属導体２の密着性を向上させるために伸線ダイス等により伸線加工する工程を有してもよい。   In addition, in order to improve the adhesiveness of the aligned flat metal conductor 2 between the alignment part 7 and the extrusion coating | coated part 8, you may have the process of wire drawing by a wire drawing die etc.

本発明の実施形態例に係る平角電線Ｗの製造方法及び製造装置Ｓによれば、押出被覆する前に、積層された平角金属導体２の水平方向の両端面を一対の第１のローラ７ａで回転可能に挟持するとともに、積層された平角金属導体２の垂直方向の両端面を一対の第２のローラ７ｂで回転可能に挟持して、積層された平角金属導体２を整列させているので、平角金属導体２同士の幅方向の位置ずれが防止され積層導体部３の断面形状が安定化する。   According to the manufacturing method and the manufacturing apparatus S of the flat electric wire W which concerns on the example of embodiment of this invention, before extrusion coating, the horizontal direction both ends of the laminated flat metal conductor 2 are made into a pair of 1st roller 7a. Since both the vertically sandwiched rectangular metal conductors 2 are rotatably sandwiched by the pair of second rollers 7b and the laminated rectangular metal conductors 2 are aligned, The positional deviation in the width direction between the flat metal conductors 2 is prevented, and the cross-sectional shape of the laminated conductor portion 3 is stabilized.

特に、酸化皮膜１が形成された平角金属導体２の場合、表面が滑りやすいので、平角金属導体２同士が水平方向（幅方向）にずれやすくなる（図３（Ａ）参照）。   In particular, in the case of the flat metal conductor 2 on which the oxide film 1 is formed, since the surface is slippery, the flat metal conductors 2 are easily displaced in the horizontal direction (width direction) (see FIG. 3A).

そこで本発明の実施形態例では、第１のローラ７ａにより積層された平角金属導体２を整列させるとともに第２のローラ７ｂ（駆動圧延ローラ）により平角金属導体２同士を厚さ方向に強く押し付けるので、平角金属導体２同士が水平方向（幅方向）にずれることが防止され、積層導体部３の断面形状がより安定化する（図３（Ｂ）参照）。   Therefore, in the embodiment of the present invention, the flat metal conductors 2 stacked by the first roller 7a are aligned and the flat metal conductors 2 are strongly pressed in the thickness direction by the second roller 7b (driving rolling roller). Further, the flat metal conductors 2 are prevented from being displaced in the horizontal direction (width direction), and the cross-sectional shape of the laminated conductor portion 3 is further stabilized (see FIG. 3B).

また例えば第２のローラ７ｂの後段かつ押出し被覆部８の直前に、第１のローラ７ａと同様の、積層された平角金属導体２の水平方向の両端面を回転可能に挟持する第３のローラを設けることにより、絶縁層４を形成する直前において積層導体部３の幅方向の位置ずれを防止することができるので、さらに好ましい。   Further, for example, a third roller that rotatably holds both horizontal end surfaces of the stacked rectangular metal conductors 2, similar to the first roller 7 a, after the second roller 7 b and immediately before the extrusion covering portion 8. It is further preferable that the position of the laminated conductor 3 in the width direction can be prevented immediately before the insulating layer 4 is formed.

本発明は、上記実施の形態に限定されることはなく、特許請求の範囲に記載された技術的事項の範囲内において、種々の変更が可能である。   The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical matters described in the claims.

本発明は、例えば交流モータや高周波電気機器のコイル等の高周波用の電線に利用される。   The present invention is used for high-frequency electric wires such as coils of AC motors and high-frequency electric devices, for example.

本発明の実施形態例に係る平角電線を示す断面図である。It is sectional drawing which shows the flat electric wire which concerns on the example of embodiment of this invention. 本発明の実施形態例に係る平角電線の製造方法及び製造装置を説明するための説明図である。It is explanatory drawing for demonstrating the manufacturing method and manufacturing apparatus of the flat electric wire which concern on the example of embodiment of this invention. （Ａ）は、平角金属導体同士が水平方向（幅方向）にずれている状態を示す説明図、（Ｂ）は整列された状態を示す説明図である。(A) is explanatory drawing which shows the state which flat metal conductors have shifted | deviated to the horizontal direction (width direction), (B) is explanatory drawing which shows the state which was arranged.

符号の説明Explanation of symbols

Ｗ：平角電線
Ｓ：装置
１：酸化皮膜
２：平角金属導体
３：積層導体部
４：絶縁層
５：酸化皮膜形成部
６：ガイド部
７：整列部
７ａ：第１のローラ
７ｂ：第２のローラ
８：押出被覆部 W: flat wire S: device 1: oxide film 2: flat metal conductor 3: laminated conductor part 4: insulating layer 5: oxide film forming part 6: guide part 7: alignment part 7a: first roller 7b: second Roller 8: Extrusion coating part

Claims (5)

外周に酸化皮膜が形成された複数の平角金属導体を厚さ方向に積層して構成された積層導体部と、
前記積層導体部の外周に押出被覆形成された絶縁層と、
を有することを特徴とする平角電線。 A laminated conductor portion formed by laminating a plurality of flat metal conductors having an oxide film formed on the outer periphery in the thickness direction;
An insulating layer formed by extrusion coating on the outer periphery of the laminated conductor portion;
A flat electric wire characterized by comprising: （１）複数の平角金属導体毎の外周に酸化皮膜を形成する工程と、
（２）前記酸化皮膜が形成された複数の平角金属導体を垂直方向に積層するようにガイドする工程と、
（３）前記積層された平角金属導体の水平方向の両端面を一対の第１のローラで回転可能に挟持するとともに、前記積層された平角金属導体の垂直方向の両端面を一対の第２のローラで回転可能に挟持して、前記積層された平角金属導体を整列させる工程と、
（４）前記整列された平角金属導体の外周に絶縁層となる樹脂を押出被覆する工程と、
を有することを特徴とする平角電線の製造方法。 (1) forming an oxide film on the outer periphery of each of the plurality of flat metal conductors;
(2) a step of guiding a plurality of flat metal conductors on which the oxide film is formed to be laminated in a vertical direction;
(3) The both ends in the horizontal direction of the stacked flat metal conductors are rotatably held by a pair of first rollers, and the both ends in the vertical direction of the stacked flat metal conductors are paired by a second pair. Aligning the stacked flat metal conductors with a roller so as to be rotatable; and
(4) a step of extruding a resin serving as an insulating layer on the outer periphery of the aligned rectangular metal conductors;
A method for producing a flat electric wire, comprising: 前記工程（３）と前記工程（４）との間に、整列された平角金属導体を伸線加工する工程を有する、ことを特徴とする請求項２に記載の平角電線の製造方法。   The method for producing a rectangular electric wire according to claim 2, further comprising a step of drawing the aligned rectangular metal conductors between the step (3) and the step (4). 複数の平角金属導体毎の外周に酸化皮膜を形成する酸化皮膜形成手段と、
前記酸化皮膜形成手段により酸化皮膜が形成された複数の平角金属導体を垂直方向に積層するようにガイドするガイド手段と、
前記ガイド手段により積層された平角金属導体の水平方向の両端面を回転可能に挟持する一対の第１のローラと、前記積層された平角金属導体の垂直方向の両端面を回転可能に挟持する一対の第２のローラとを備え、前記積層された平角金属導体を整列させる整列手段と、
前記整列手段により整列された平角金属導体の外周に絶縁層となる樹脂を押出被覆する押出被覆手段と、
を有することを特徴とする平角電線の製造装置。 An oxide film forming means for forming an oxide film on the outer periphery of each of the plurality of flat metal conductors;
A guide means for guiding a plurality of rectangular metal conductors having an oxide film formed thereon by the oxide film forming means to be laminated in a vertical direction;
A pair of first rollers for rotatably holding both end faces in the horizontal direction of the flat metal conductors stacked by the guide means, and a pair of the both ends of the vertical metal metal conductors stacked in a vertical direction for rotation. An alignment means for aligning the laminated rectangular metal conductors,
Extrusion coating means for extruding a resin serving as an insulating layer on the outer periphery of the flat metal conductor aligned by the alignment means;
An apparatus for producing a flat electric wire, comprising: 前記第１のローラは駆動圧延用ローラ又はフリーローラであり、前記第２のローラは駆動圧延用ローラであることを特徴とする請求項４に記載の平角電線の製造装置。   The apparatus for producing a rectangular electric wire according to claim 4, wherein the first roller is a roller for driving rolling or a free roller, and the second roller is a roller for driving rolling.
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Publication number Priority date Publication date Assignee Title
JP2014112506A (en) * 2012-11-09 2014-06-19 Furukawa Electric Co Ltd:The Coil wire and coil structure
JP2014154511A (en) * 2013-02-13 2014-08-25 Hitachi Metals Ltd Insulated wire and method of manufacturing the same
US10319491B2 (en) 2013-09-06 2019-06-11 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
WO2015033820A1 (en) 2013-09-06 2015-03-12 古河電気工業株式会社 Flat electric wire, manufacturing method thereof, and electric device
WO2015033821A1 (en) 2013-09-06 2015-03-12 古河電気工業株式会社 Flat electric wire, manufacturing method thereof, and electric device
US10325695B2 (en) 2013-09-06 2019-06-18 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
KR20180084781A (en) 2015-11-20 2018-07-25 후루카와 덴키 고교 가부시키가이샤 Assembly wire and its manufacturing method and electrical equipment
US10991483B2 (en) 2015-11-20 2021-04-27 Essex Furukawa Magnet Wire Japan Co., Ltd. Assembled wire, method of producing the same, and electrical equipment using the same
JP2018060613A (en) * 2016-10-03 2018-04-12 古河電気工業株式会社 Straight angle wire lamination device, straight angle wire lamination method and manufacturing method of lamination straight angle wire
JP2019149535A (en) * 2018-02-27 2019-09-05 国立大学法人信州大学 Inductor
JP7144835B2 (en) 2018-02-27 2022-09-30 国立大学法人信州大学 inductor
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JP7296081B2 (en) 2018-02-27 2023-06-22 国立大学法人信州大学 inductor

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