JP2022031002A

JP2022031002A - Coating peeling method and coating peeling device of coupling conductor wire

Info

Publication number: JP2022031002A
Application number: JP2020135365A
Authority: JP
Inventors: 夕▲が▼ ▲こも▼口; Yuga Komoguchi; 亜希福原; Aki Fukuhara
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-18
Anticipated expiration: 2040-08-07
Also published as: JP7338585B2

Abstract

To provide a coating peeling method and a coating peeling device of a coupling conductor wire which can efficiently peel adhesive coating without deteriorating productivity in peeling of a coating conductor wire constituting the coupling conductor wire.SOLUTION: In a coating peeling method of a coupling conductor wire for a rotary electric machine according to the present invention, in one coupling conductor wire constituted by adhering at least two coating conductor wires having substantially square cross-sections to linearly extend in a juxtaposed state and comprising external coating on its outer periphery, the external coating and adhesive coating of an adhesive part of the coating conductor wire are partially peeled. The coating peeling method of the coupling conductor wire comprises: an external coating peeling process S101; a slide process S102; a tentative opening process S103; a main opening process S104; an adhesive coating cutting process S105; and a shape returning process S106. The main opening process S104, the adhesive coating cutting process S105, and the shape returning process S106 are continuously performed by one reciprocating operation of a punch.SELECTED DRAWING: Figure 4

Description

本発明は、結合導体線を構成する被膜導体線を導通可能にするために、結合導体線の外部被膜及び、被膜導体線同士の接着部の接着被膜を必要な部分のみ除去加工する結合導体線の被膜剥離方法および被膜剥離装置に関する。 In the present invention, in order to make the coated conductor wire constituting the bonded conductor wire conductive, the outer coating of the bonded conductor wire and the adhesive coating of the bonded portion between the coated conductor wires are removed only in a necessary portion. The present invention relates to a film peeling method and a film peeling device.

例えば車載用モータのステータに使用される巻線として、断面矩形状をなす平角導線が使用されるようになってきている。平角導線を短尺のセグメントコイルとして構成し、ステータに組み付けた後でセグメントコイルの端部同士を溶接して繋いでいる。ところが、平角導線は導線１本当たりの断面積が大きいため、モータ回転数が大きくなり周波数が大きくなった場合には、渦電流の発生により巻線損失が大きくなるという問題がある。 For example, as a winding used for a stator of an in-vehicle motor, a flat conductor having a rectangular cross section has come to be used. The flat conductor is configured as a short segment coil, and after assembling to the stator, the ends of the segment coil are welded and connected. However, since the flat conductor has a large cross-sectional area per conductor, there is a problem that the winding loss increases due to the generation of eddy current when the motor rotation speed increases and the frequency increases.

これに対し、複数の導線を一体化した結合導体線が提案されている。すなわち、セグメントコイルとして、複数の導線によって構成された結合導体線を用いることで、渦電流の影響を抑制することができる。 On the other hand, a coupled conductor wire in which a plurality of conductor wires are integrated has been proposed. That is, by using a coupled conductor wire composed of a plurality of conducting wires as the segment coil, the influence of the eddy current can be suppressed.

ところで、結合導体線を導通可能にするため、また、結合導体線同士の溶接時の不純物をなくすためには、導体線の被膜を必要な部分だけ除去する加工が必要である。例えば、特許文献１に記載の被膜導体線の被膜剥離方法では、断面矩形状をなす被膜導体線の第１から第４の側面に対して、その各側面と略平行な面において被膜導体線の軸方向と直交する方向に切削刃を移動することにより、被膜と導体線の一部を除去するようにしていた。 By the way, in order to make the bonded conductor wires conductive and to eliminate impurities at the time of welding the bonded conductor wires to each other, it is necessary to remove only a necessary portion of the conductor wire coating. For example, in the coating peeling method of the coated conductor wire described in Patent Document 1, the coated conductor wire is formed on a surface substantially parallel to each of the first to fourth side surfaces of the coated conductor wire having a rectangular cross section. By moving the cutting blade in the direction orthogonal to the axial direction, a part of the coating film and the conductor wire was removed.

特開２００２－２０９３１９号公報Japanese Unexamined Patent Publication No. 2002-209319

導線が一本で構成される場合には、上記特許文献１に記載のように外部被膜を切削するのみで良いが、複数の導線（以下、「素線」ともいう）が一本化されてなる結合導体線の場合、結合導体線全体の外部被膜に加え、素線同士の接着部における被膜を剥がす必要がある。この接着部の被膜についても上記方法で同様に切削していると、別工程として多大な工数が必要となり、生産性が悪化するという問題が生じていた。 When the conductor is composed of one conductor, it is sufficient to cut the outer coating as described in Patent Document 1, but a plurality of conductors (hereinafter, also referred to as "wires") are unified. In the case of a bonded conductor wire, in addition to the outer coating of the entire bonded conductor wire, it is necessary to peel off the coating film at the bonding portion between the strands. If the coating film of the adhesive portion is also cut in the same manner by the above method, a large number of man-hours are required as a separate process, which causes a problem that productivity deteriorates.

本発明は、このような点に鑑みて創作されたものであり、その目的は、結合導体線を構成する被膜導体線の剥離において、生産性を悪化させることなく接着被膜を効率的に剥離することが可能な結合導体線の被膜剥離方法および被膜剥離装置を提供することにある。 The present invention has been created in view of these points, and an object thereof is to efficiently peel off an adhesive film without deteriorating productivity in peeling a coated conductor wire constituting a bonded conductor wire. It is an object of the present invention to provide a coating stripping method and a coating stripping device for a bonded conductor wire.

本発明による回転機用結合導体線の被膜剥離方法では、略四角形の断面を有し直線状に延びる少なくとも２本の被膜導体線（１，２）が並設状態で接着されて、その外周に外部被膜（３）を有して構成される１本の結合導体線（４）において、外部被膜及び、被膜導体線の接着部の接着被膜（５）を部分的に剥離する。 In the method for peeling a coating of a bonded conductor wire for a rotating machine according to the present invention, at least two coated conductor wires (1, 2) having a substantially quadrangular cross section and extending linearly are bonded in a parallel state and are bonded to the outer periphery thereof. In one bonded conductor wire (4) having an outer coating (3), the outer coating and the adhesive coating (5) at the bonded portion of the coated conductor wire are partially peeled off.

被膜剥離方法は、外部被膜剥離工程（Ｓ１０１）と、スライド工程（Ｓ１０２）と、仮開き工程（Ｓ１０３）と、本開き工程（Ｓ１０４）と、接着被膜切削工程（Ｓ１０５）と、形状戻し工程（Ｓ１０６）と、を含む。 The film peeling method includes an external film peeling step (S101), a slide step (S102), a temporary opening step (S103), a main opening step (S104), an adhesive film cutting step (S105), and a shape return step (S105). S106) and.

外部被膜剥離工程では、外部被膜を剥離する。スライド工程では、被膜導体線が直線状に延びる長手方向に垂直な断面で見たとき、被膜導体線の並設方向と直交する方向を直交方向とすると、外部被膜剥離工程の後、接着部の被膜導体線を直交方向に相対的にスライドさせる。仮開き工程は、スライド工程の後、接着部の直交方向の一方側端部を、被膜導体線が並設方向に離間するように開く。 In the outer coating peeling step, the outer coating is peeled off. In the slide process, when viewed in a cross section perpendicular to the longitudinal direction in which the coating conductor wire extends linearly, if the direction orthogonal to the parallel direction of the coating conductor wire is the orthogonal direction, after the outer coating peeling step, the bonded portion Slide the coated conductor wire relatively in the orthogonal direction. In the temporary opening step, after the sliding step, one end of the bonded portion in the orthogonal direction is opened so that the coated conductor wires are separated in the parallel direction.

本開き工程では、先端に開き成形部（４１）及び開き成形部の他端側に形成される切削部（５８）を有し直交方向に往復動可能なパンチ（３１）と、パンチに対向して設けられ、パンチの往動作に伴いパンチが往復動するライン（Ｌ）から離れる開方向にスライドし、パンチの復動作に伴いラインに近づく閉方向にスライドするようにパンチに連動し、ラインを中心に並設方向に開閉動作が可能なスライドダイ（３２）と、が用いられ、仮開き工程の後、仮開きされた一方側端部から挿入されるパンチの往動作に伴い、接着部の一方側端部から他方側端部までの全部において被膜導体線が離間するように、開き成形部により被膜導体線を開き成形する。 In the main opening step, a punch (31) having an opening forming portion (41) at the tip and a cutting portion (58) formed on the other end side of the opening forming portion and capable of reciprocating in the orthogonal direction faces the punch. The line is interlocked with the punch so that it slides in the open direction away from the line (L) where the punch reciprocates with the forward movement of the punch, and slides in the closed direction toward the line with the return movement of the punch. A slide die (32) capable of opening and closing in the parallel direction is used in the center, and after the temporary opening process, the adhesive portion is subjected to the forward operation of the punch inserted from the temporarily opened one side end. The coated conductor wire is opened and molded by the opening forming portion so that the coated conductor wire is separated from the one side end portion to the other side end portion.

接着被膜切削工程では、本開き工程の後、開状態で停止したスライドダイにより被膜導体線の形状を保持しつつ、パンチのさらなる往動作に伴い、切削部により接着被膜を切削する。形状戻し工程では、接着被膜切削工程の後、パンチの復動作に連動してスライドダイがパンチ側へ閉動作することにより、開き成形した被膜導体線を元の直線状態に押し戻す。本開き工程、接着被膜切削工程、および形状戻し工程は、パンチの一往復の動作で連続して行われる。 In the adhesive coating cutting step, after the main opening step, the adhesive coating is cut by the cutting portion with the further forward movement of the punch while maintaining the shape of the coating conductor wire by the slide die stopped in the open state. In the shape return step, after the adhesive film cutting step, the slide die closes to the punch side in conjunction with the punch return operation, thereby pushing the openly formed film conductor wire back to the original linear state. The main opening step, the adhesive film cutting step, and the shape returning step are continuously performed by one reciprocating operation of the punch.

この結合導体線の被膜剥離方法によれば、外部被膜剥離工程、スライド工程、仮開き工程、本開き工程、接着被膜切削工程、形状戻し工程の各工程を含み、結合導体線の外部被膜及び接着被膜を部分的に剥離する。外部被膜が剥離された後、接着被膜が剥離される。接着被膜の剥離は、スライド工程、仮開き工程、本開き工程、接着被膜切削工程、形状戻し工程の各工程を経て行われる。そして、本開き工程、接着被膜切削工程、および形状戻し工程は、パンチの一往復の動作で連続して行われるため、例えば外部被膜を有する一本の銅線の剥離と比較しても、大きく生産性を悪化させることなく接着被膜を効率的に剥離することができる。 According to this method of peeling the coating of the bonded conductor wire, each step of the outer coating peeling step, the slide step, the temporary opening step, the main opening step, the adhesive coating cutting step, and the shape return step is included, and the outer coating and the bonding of the bonded conductor wire are included. Partially peel off the coating. After the outer coating is peeled off, the adhesive coating is peeled off. The peeling of the adhesive film is performed through each step of a slide step, a temporary opening step, a main opening step, an adhesive film cutting step, and a shape return step. Since the main opening step, the adhesive film cutting process, and the shape returning process are continuously performed by one reciprocating operation of the punch, they are significantly larger than, for example, peeling of a single copper wire having an outer film. The adhesive film can be efficiently peeled off without deteriorating productivity.

また、スライド工程および仮開き工程により、接着部の接着力が弱まっており、次の本開き工程でパンチが接着部へ挿入されるときの入口が形成されるため、本開き工程でのパンチの接着部への挿入が容易となり、作業効率を向上させることができる。 In addition, the adhesive force of the bonded portion is weakened by the slide step and the temporary opening step, and an inlet is formed when the punch is inserted into the bonded portion in the next main opening step. It can be easily inserted into the bonded portion and work efficiency can be improved.

本発明による回転機用結合導体線の被膜剥離装置は、略四角形の断面を有し直線状に延びる少なくとも２本の被膜導体線（１，２）が並設状態で接着されて、外周に外部被膜（３）を有して構成される１本の結合導体線（４）において、被膜導体線の接着部の接着被膜（５）を部分的に剥離するための装置である。この被膜剥離装置は、パンチ（３１）と、スライドダイ（３２）と、を備える。 In the coating stripping device for the coupled conductor wire for a rotating machine according to the present invention, at least two coated conductor wires (1, 2) having a substantially quadrangular cross section and extending linearly are bonded in a parallel state to the outside on the outer periphery. It is a device for partially peeling off the adhesive film (5) at the bonded portion of the coated conductor wire in one bonded conductor wire (4) having the film (3). This coating stripping device includes a punch (31) and a slide die (32).

パンチは、先端に開き成形部（４１）及び開き成形部の他端側に形成される切削部（５８）を有し、被膜導体線が直線状に延びる長手方向に垂直な断面で見たとき、被膜導体線の並設方向と直交する方向である直交方向に往復動可能である。スライドダイは、パンチに対向して設けられ、パンチの往動作に伴いパンチが往復動するライン（Ｌ）から離れる開方向にスライドし、パンチの復動作に伴いラインに近づく閉方向にスライドするようにパンチに連動し、ラインを中心に並設方向に開閉動作が可能である。この被膜剥離装置によれば、上記の結合導体線の被膜剥離方法と同様に、生産性を悪化させることなく接着被膜を効率的に剥離することができる。 The punch has an open forming portion (41) at the tip and a cutting portion (58) formed on the other end side of the open forming portion, and when viewed in a cross section perpendicular to the longitudinal direction in which the coated conductor wire extends linearly. , It is possible to reciprocate in the orthogonal direction, which is the direction orthogonal to the parallel direction of the coated conductor wires. The slide die is provided so as to face the punch, slides in the open direction away from the line (L) where the punch reciprocates with the forward movement of the punch, and slides in the closed direction approaching the line with the return movement of the punch. In conjunction with the punch, it can be opened and closed in the parallel direction around the line. According to this coating stripping device, the adhesive coating can be efficiently stripped without deteriorating the productivity, similar to the coating stripping method for the bonded conductor wire described above.

本実施形態において対象となる結合導体線を示す斜視図である。It is a perspective view which shows the coupling conductor wire which is the object in this embodiment. 図１に示す結合導体線において、一部の外部被膜が除去された状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which a part of the outer coating is removed from the bonded conductor wire shown in FIG. 1. 本実施形態の結合導体線の被膜剥離方法を実施する設備ラインを模式的に示す図である。It is a figure which shows typically the equipment line which carries out the film peeling method of the bonded conductor wire of this embodiment. 本実施形態の結合導体線の被膜剥離方法における工程をフローチャートに示す図である。It is a figure which shows the process in the film peeling method of the bonded conductor wire of this embodiment in the flowchart. （ａ）～（ｃ）は、スライド工程について説明する断面図である。(A)-(c) are sectional views explaining the slide process. 仮開き工程について説明する断面図であり、（ａ）は仮開き前の初期状態を示し、（ｂ）は仮開き完了時の状態を示す。It is sectional drawing explaining the temporary opening process, (a) shows the initial state before temporary opening, and (b) shows the state at the time of completion of temporary opening. 仮開き完了後の結合導体線を示す断面図である。It is sectional drawing which shows the coupling conductor wire after the temporary opening is completed. 本開き工程および接着被膜切削工程について説明する断面図であり、（ａ）は本開き工程開始前の状態を示し、（ｂ）は本開き工程開始時の状態を示し、（ｃ）は接着被膜切削工程完了時の状態を示す。It is sectional drawing explaining the main opening process and the adhesive film cutting process, (a) shows the state before the main opening process start, (b) shows the state at the time of the main opening process start, (c) is the adhesive film. Shows the state when the cutting process is completed. パンチの全体形状を示す斜視図である。It is a perspective view which shows the whole shape of a punch. 本開き工程時の状態を示す断面図である。It is sectional drawing which shows the state at the time of the main opening process. スライドダイを構成する第１スライド部材を示す斜視図である。It is a perspective view which shows the 1st slide member which constitutes a slide die. 開き工程時におけるパンチと結合導体線のみを示す斜視図である。It is a perspective view which shows only a punch and a coupling conductor wire at the time of an opening process. その他の実施形態によるパンチおよび結合導体線の開き形状を示す斜視図であり、（ａ）は結合導体線のみを示し、（ｂ）はパンチと結合導体線を示す。It is a perspective view which shows the opening shape of a punch and a coupling conductor wire by another embodiment, (a) shows only the coupling conductor wire, (b) shows the punch and the coupling conductor wire. その他の実施形態によるパンチおよび結合導体線の開き形状を示す斜視図であり、（ａ）は結合導体線のみを示し、（ｂ）はパンチと結合導体線を示す。It is a perspective view which shows the opening shape of a punch and a coupling conductor wire by another embodiment, (a) shows only the coupling conductor wire, (b) shows the punch and the coupling conductor wire.

以下、本発明の複数の実施形態を図面に基づいて説明する。
〈第１実施形態〉
［構成］
本発明の第１実施形態の結合導体線の被膜剥離方法および被膜剥離装置について、図１～図１２を参照しつつ説明する。本実施形態の被膜剥離方法は、図１、図２に示すように、２本の銅線１，２が並設状態で接着されて、その外周に外部被膜３を有して構成される１本の結合導体線４に適用される。２本の銅線１，２は、薄い皮膜で覆われており、長手方向の接着部は接着された状態である。銅線１，２は、「被膜導体線」に相当する。 Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
[Constitution]
The coating stripping method and the coating stripping device of the bonded conductor wire according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 12. As shown in FIGS. 1 and 2, the coating stripping method of the present embodiment is configured by bonding two copper wires 1 and 2 in a juxtaposed state and having an outer coating 3 on the outer periphery thereof. Applies to the coupled conductor wire 4 of a book. The two copper wires 1 and 2 are covered with a thin film, and the adhesive portion in the longitudinal direction is in a bonded state. Copper wires 1 and 2 correspond to "coated conductor wires".

結合導体線４は、第１銅線１、第２銅線２、外部被膜３、接着被膜５を有している。外部被膜３と接着被膜５は、共に絶縁層である。本実施形態の結合導体線４は、車載用モータ（回転機）のステータコアに使用される回転機用結合導体線である。図示しないステータコアのスロットに、結合導体線４が配置されて導体線同士を接合することでコイルが形成される。以下、銅線１，２が直線状に延びる長手方向に垂直な断面で見たとき、銅線１，２の並設方向（図１に示す左右方向）と直交する方向を直交方向（図１に示す上下方向）とする。 The bonded conductor wire 4 has a first copper wire 1, a second copper wire 2, an outer coating 3, and an adhesive coating 5. Both the outer coating 3 and the adhesive coating 5 are insulating layers. The coupling conductor wire 4 of the present embodiment is a coupling conductor wire for a rotating machine used for a stator core of an in-vehicle motor (rotating machine). A coil is formed by arranging a coupling conductor wire 4 in a slot of a stator core (not shown) and joining the conductor wires to each other. Hereinafter, when viewed in a cross section perpendicular to the longitudinal direction in which the copper wires 1 and 2 extend linearly, the direction orthogonal to the juxtaposed direction (left-right direction shown in FIG. 1) of the copper wires 1 and 2 is an orthogonal direction (FIG. 1). (Vertical direction shown in).

銅線１，２は、断面略四角形状をなす平角銅線である。結合導体線４は、銅線１，２の断面において長手辺となる面を互いに接着されて、断面略四角形状をなす１本の導体線として形成されている。本実施形態の結合導体線４の剥離方法では、結合導体線４の外部被膜３及び、２本の銅線１，２の接着部の接着被膜５を、図２に示すように部分的に剥離する。 The copper wires 1 and 2 are flat copper wires having a substantially square cross section. The bonded conductor wire 4 is formed as one conductor wire having a substantially quadrangular cross section by adhering the surfaces which are the longitudinal sides in the cross sections of the copper wires 1 and 2 to each other. In the method of peeling the bonded conductor wire 4 of the present embodiment, the outer coating 3 of the bonded conductor wire 4 and the adhesive coating 5 of the bonded portion of the two copper wires 1 and 2 are partially peeled off as shown in FIG. do.

剥離方法を実施する剥離工程ライン１０は、図３に示すように、上流から順に、アンコイラ１１、真直送り機構部１２、縦方向剥離部１３、横方向剥離部１４、仮開き部１５、接着被膜剥離部１６、および切断部１７を備えている。 As shown in FIG. 3, the peeling process line 10 for carrying out the peeling method consists of an anchorer 11, a straight feed mechanism portion 12, a vertical peeling portion 13, a lateral peeling portion 14, a temporary opening portion 15, and an adhesive film in order from the upstream. It includes a peeling portion 16 and a cutting portion 17.

アンコイラ１１は、ドラムに巻き付いた結合導体線４を巻き出して供給する材料巻出装置である。図３に示すように、アンコイラ１１は、図示しないモータにより駆動され、アンコイラ１１から巻き出された結合導体線４は、真直送り機構部１２に供給される。真直送り機構部１２を通過した結合導体線４は、以下、縦方向剥離部１３、横方向剥離部１４、仮開き部１５、接着被膜剥離部１６、および切断部１７に順次送られる。 The anchor 11 is a material unwinding device that unwinds and supplies the coupling conductor wire 4 wound around the drum. As shown in FIG. 3, the anchorer 11 is driven by a motor (not shown), and the coupling conductor wire 4 unwound from the anchorer 11 is supplied to the straight feed mechanism unit 12. The bonded conductor wire 4 that has passed through the straight feed mechanism portion 12 is sequentially fed to the vertical peeling portion 13, the lateral peeling portion 14, the temporary opening portion 15, the adhesive film peeling portion 16, and the cutting portion 17.

上記剥離工程ライン１０で実施される被膜剥離方法は、図４に示すように、外部被膜剥離工程Ｓ１０１、スライド工程Ｓ１０２、仮開き工程Ｓ１０３、本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、形状戻し工程Ｓ１０６、および切断工程Ｓ１０７を主に含んでいる。外部被膜剥離工程Ｓ１０１は、縦方向剥離部１３および横方向剥離部１４にて実施される。スライド工程Ｓ１０２及び仮開き工程Ｓ１０３は、仮開き部１５にて実施される。本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、および形状戻し工程Ｓ１０６は、接着被膜剥離部１６にて実施される。接着被膜剥離部１６を通過した結合導体線４は、一部の外部被膜３および接着被膜５が除去された状態であり、切断部１７にて、製品規格に併せたサイズに切断される。 As shown in FIG. 4, the film peeling method carried out in the peeling step line 10 includes an external film peeling step S101, a slide step S102, a temporary opening step S103, a main opening step S104, an adhesive film cutting step S105, and a shape return step. It mainly includes S106 and a cutting step S107. The outer coating peeling step S101 is carried out at the vertical peeling portion 13 and the horizontal peeling portion 14. The slide step S102 and the temporary opening step S103 are carried out at the temporary opening portion 15. The main opening step S104, the adhesive film cutting step S105, and the shape returning step S106 are carried out at the adhesive film peeling portion 16. The bonded conductor wire 4 that has passed through the adhesive film peeling portion 16 is in a state in which a part of the outer film 3 and the adhesive film 5 have been removed, and is cut at the cutting portion 17 to a size conforming to the product standard.

以下、各工程について説明する。外部被膜剥離工程Ｓ１０１では、結合導体線４の外部被膜３が切削される。まず、縦方向剥離部１３において、図示しないカッター機構とラックプレスにより、結合導体線４の縦部分に相当する２面に対しカッターを移動させることで、２面の外部被膜３を切削する。そして、横方向剥離部１４において、同様のカッター機構とラックプレスにより、結合導体線４の横部分に相当する２面に対しカッターを移動させることで、２面の外部被膜３を切削する。 Hereinafter, each step will be described. In the outer coating peeling step S101, the outer coating 3 of the bonded conductor wire 4 is cut. First, in the vertical peeling portion 13, the outer coating 3 on the two surfaces is cut by moving the cutter to the two surfaces corresponding to the vertical portions of the coupled conductor wire 4 by a cutter mechanism (not shown) and a rack press. Then, in the lateral peeling portion 14, the outer coating 3 on the two surfaces is cut by moving the cutter to the two surfaces corresponding to the lateral portions of the coupled conductor wire 4 by the same cutter mechanism and rack press.

外部被膜剥離工程Ｓ１０１の後には、接着被膜５を剥離する工程に移行する。以下説明するスライド工程Ｓ１０２から、仮開き工程Ｓ１０３、本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、形状戻し工程Ｓ１０６までの一連の工程を経て、銅線１，２同士の接着部の被膜５が除去される。 After the outer film peeling step S101, the process proceeds to the step of peeling the adhesive film 5. The coating film 5 of the bonding portion between the copper wires 1 and 2 is removed through a series of steps from the slide step S102 described below to the temporary opening step S103, the main opening step S104, the adhesive film cutting process S105, and the shape return step S106. Will be done.

まず、スライド工程Ｓ１０２について説明する。スライド工程Ｓ１０２では、外部被膜剥離工程Ｓ１０１の後、接着部の銅線１，２を直交方向に互いに相対的にスライドさせる。図５（ａ）～（ｃ）に示すように、スライド工程Ｓ１０２では、ラックプレスが有する第１チャック部２１の隙間２２に第１銅線１が把持され、ラックプレスが有する第２チャック部２３の隙間２４に第２銅線２が把持される。各チャック部２１，２３は、各銅線１，２を保持した状態で相対的にスライドする。このときのスライド量は、０．５ｍｍ程度である。 First, the slide step S102 will be described. In the slide step S102, after the outer coating peeling step S101, the copper wires 1 and 2 of the bonded portion are slid relative to each other in the orthogonal direction. As shown in FIGS. 5A to 5C, in the slide step S102, the first copper wire 1 is gripped in the gap 22 of the first chuck portion 21 of the rack press, and the second chuck portion 23 of the rack press has. The second copper wire 2 is gripped in the gap 24 of. The chuck portions 21 and 23 slide relatively while holding the copper wires 1 and 2. The slide amount at this time is about 0.5 mm.

まず、図５（ａ）に示すように、第１チャック部２１は矢印Ａ１に示す上方向に移動し、第２チャック部２３は矢印Ａ１とは逆方向の矢印Ａ２に示す下方向に移動し、図５（ｂ）に示す状態となる。このとき、第１銅線１は第２銅線２より上にある。次いで、図５（ｂ）に示すように、第１チャック部２１は、先ほどの移動方向であるＡ１とは逆方向の矢印Ａ３の下方向に移動する。第２チャック部２３も、同様に先ほどの移動方向であるＡ２とは逆方向の矢印Ａ４の上方向に移動し、図５（ｃ）に示す状態となる。このとき、第１銅線１は第２銅線２より下にある。 First, as shown in FIG. 5A, the first chuck portion 21 moves upward as shown by the arrow A1, and the second chuck portion 23 moves downward as shown by the arrow A2 in the direction opposite to the arrow A1. , The state shown in FIG. 5 (b) is obtained. At this time, the first copper wire 1 is above the second copper wire 2. Next, as shown in FIG. 5B, the first chuck portion 21 moves in the downward direction of the arrow A3 in the direction opposite to the movement direction A1. Similarly, the second chuck portion 23 also moves in the upward direction of the arrow A4 in the direction opposite to the moving direction A2, and is in the state shown in FIG. 5 (c). At this time, the first copper wire 1 is below the second copper wire 2.

そして、再び、第１チャック部２１は矢印Ａ１に示す上方向に移動し、第２チャック部２３は矢印Ａ２に示す下方向に移動し、最終的には初期状態の図５（ａ）の状態となる。すなわち、各チャック部２１，２３で各銅線１，２を保持して、直交方向においてお互いに反対方向にずらし、元の形状に戻す。なお、この一連の各チャック部２１，２３の相対移動により、銅線１，２の接着部は、部分的に面剥離した状態となるが、接着部の銅線１，２同士が完全に離間した状態とはなっておらず、接着力が弱まった状態となっている。 Then, again, the first chuck portion 21 moves upward as shown by the arrow A1, the second chuck portion 23 moves downward as shown by the arrow A2, and finally the state of FIG. 5A in the initial state. Will be. That is, the copper wires 1 and 2 are held by the chuck portions 21 and 23, and are displaced in the opposite directions in the orthogonal direction to return to the original shape. Due to the relative movement of each of the chuck portions 21 and 23 in this series, the bonded portions of the copper wires 1 and 2 are partially separated from each other, but the copper wires 1 and 2 of the bonded portions are completely separated from each other. It is not in a state where it has been removed, and the adhesive strength is weakened.

次に、仮開き工程Ｓ１０３について説明する。仮開き工程Ｓ１０３は、スライド工程Ｓ１０２の後、図６に示すように、接着部における銅線１，２の直交方向の上端部（一方側端部に相当）が並設方向において互いに離間するように開く工程である。図６（ａ）、（ｂ）に示すように、ラックプレスが有するベース２６と各可動ブロック２７，２８とにより、銅線１，２の上下を挟んで接着部の上部を開く。第１可動ブロック２７に第１銅線１が保持され、第２可動ブロック２８に第２銅線２が保持される。各ブロック２７，２８は、矢印Ａ５，Ａ６に示すように、互いに離間する方向へ駆動され、各ブロック２７，２８に保持された銅線１，２は、上端部が完全に引き剥がされて離間する。なお、この仮開き工程Ｓ１０３では、図７に示すように、離間した上端部が外部被膜３の幅より出ない範囲で仮開きされる。 Next, the temporary opening step S103 will be described. In the temporary opening step S103, after the slide step S102, as shown in FIG. 6, the upper ends (corresponding to one side end) of the copper wires 1 and 2 in the bonding portion in the orthogonal direction are separated from each other in the parallel arrangement direction. It is a process to open to. As shown in FIGS. 6A and 6B, the base 26 of the rack press and the movable blocks 27 and 28 sandwich the upper and lower parts of the copper wires 1 and 2 to open the upper part of the bonded portion. The first copper wire 1 is held by the first movable block 27, and the second copper wire 2 is held by the second movable block 28. As shown by arrows A5 and A6, the blocks 27 and 28 are driven in a direction away from each other, and the copper wires 1 and 2 held by the blocks 27 and 28 are separated by completely peeling off the upper ends. do. In this temporary opening step S103, as shown in FIG. 7, the separated upper end portions are temporarily opened within a range that does not come out from the width of the outer coating film 3.

次に、本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、および形状戻し工程Ｓ１０６について説明する。本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、および形状戻し工程Ｓ１０６は、同一のラックプレス３０により、連続的に実施される。まず、これらの各工程Ｓ１０４，Ｓ１０５，Ｓ１０６で用いられるラックプレス３０の構成について説明する。図８に示すように、ラックプレス３０は、パンチ３１、スライドダイ３２、パンチガイド３３、ダイガイド３４、およびベース３５を主に備えている。なお、図８では、パンチガイド３３に設けられるスプリング等の部材については省略して簡潔に図示している。また、切削時に発生する切粉をエアーで吹き飛ばす図示しない切粉除去機構を有している。ラックプレス３０は、「被膜剥離装置」に相当する。 Next, the main opening step S104, the adhesive film cutting step S105, and the shape returning step S106 will be described. The main opening step S104, the adhesive film cutting step S105, and the shape returning step S106 are continuously performed by the same rack press 30. First, the configuration of the rack press 30 used in each of these steps S104, S105, and S106 will be described. As shown in FIG. 8, the rack press 30 mainly includes a punch 31, a slide die 32, a punch guide 33, a die guide 34, and a base 35. In FIG. 8, members such as springs provided in the punch guide 33 are omitted and shown briefly. It also has a chip removal mechanism (not shown) that blows off chips generated during cutting with air. The rack press 30 corresponds to a "coating peeling device".

図８、図９、図１０の各図に示すように、パンチ３１は、先端が先細の略棒状をなし、先端から順に、開き成形部４１、中間軸部４２、および大軸部４３を同軸上に有している。開き成形部４１は、先端にいくほど先が細く、軸方向に垂直な断面が略菱形をなしている。開き成形部４１は、並設方向の幅Ｗ１（図１０参照）が長手方向の長さＷ２よりも小さく形成されている。 As shown in FIGS. 8, 9, and 10, the punch 31 has a tapered rod shape at the tip, and the open forming portion 41, the intermediate shaft portion 42, and the large shaft portion 43 are coaxial with each other in order from the tip. Have on top. The open molded portion 41 has a tapered shape toward the tip, and the cross section perpendicular to the axial direction has a substantially rhombic shape. The open forming portion 41 is formed so that the width W1 in the parallel arrangement direction (see FIG. 10) is smaller than the length W2 in the longitudinal direction.

パンチ３１は、菱形形状の中心Ｃ（図１０参照）と長手方向を通る平面に対して対称形状をなしている。開き成形部４１は、略菱形形状をなす基準面４４（図９参照）と、基準面４４の外周から下方へ連続して形成される側面５１，５２，５３，５４，５５，５６（図１０参照）と、を主に有している。基準面４４は、中間軸部４２との境界段部に位置した平坦な面であり、成形時には、菱形形状の長い方の対角線が銅線１，２の長手方向に一致するようにして、パンチ３１は銅線１，２間に挿入される。 The punch 31 has a symmetrical shape with respect to a plane passing through the center C (see FIG. 10) of the rhombus shape and the longitudinal direction. The open molding portion 41 has a reference surface 44 having a substantially rhombic shape (see FIG. 9) and side surfaces 51, 52, 53, 54, 55, 56 (FIG. 10) formed continuously downward from the outer periphery of the reference surface 44. See) and mainly have. The reference surface 44 is a flat surface located at the boundary step with the intermediate shaft portion 42, and is punched so that the longer diagonal line of the rhombus shape coincides with the longitudinal direction of the copper wires 1 and 2 at the time of molding. 31 is inserted between the copper wires 1 and 2.

側面５１，５２，５３，５４，５５，５６は、第１側面５１から周方向に順に、第２側面５２、第３側面５３、第４側面５４、第５側面５５、および第６側面５６を有して構成されている。各側面５１，５２，５３，５４，５５，５６は、いずれも下方先端に頂点を位置させた略三角形状をなしている。これら６つの側面５１，５２，５３，５４，５５，５６が基準面４４から下方へ連続して、下方へ向かうほど基準面４４の中心方向へ近づくように傾斜しており、開き成形部４１の全体形状が先細になるように形成されている。 The side surfaces 51, 52, 53, 54, 55, 56 form the second side surface 52, the third side surface 53, the fourth side surface 54, the fifth side surface 55, and the sixth side surface 56 in order from the first side surface 51 in the circumferential direction. Has and is configured. Each of the side surfaces 51, 52, 53, 54, 55, 56 has a substantially triangular shape with the apex located at the lower tip. These six side surfaces 51, 52, 53, 54, 55, 56 are continuous downward from the reference surface 44, and are inclined so as to approach the center of the reference surface 44 toward the lower side, and the open forming portion 41. It is formed so that the overall shape is tapered.

第１側面５１、第３側面５３、第４側面５４、および第６側面５６はいずれも同じ大きさである。第１側面５１と基準面４４との交線と、第４側面５４と基準面４４との交線とは、成形時において銅線１，２の長手方向に対して所定角度（２０度程度）をなし互いに平行である。第３側面５３と基準面４４との交線と、第６側面５６と基準面４４との交線とは、長手方向に対して所定角度（２０度程度）をなし互いに平行である。これら第１側面５１、第３側面５３、第４側面５４、および第６側面５６の４つの面により、軸方向に垂直な断面形状が略菱形形状となっている。 The first side surface 51, the third side surface 53, the fourth side surface 54, and the sixth side surface 56 are all the same size. The line of intersection between the first side surface 51 and the reference surface 44 and the line of intersection between the fourth side surface 54 and the reference surface 44 are at a predetermined angle (about 20 degrees) with respect to the longitudinal direction of the copper wires 1 and 2 at the time of molding. It is parallel to each other. The line of intersection between the third side surface 53 and the reference surface 44 and the line of intersection between the sixth side surface 56 and the reference surface 44 form a predetermined angle (about 20 degrees) with respect to the longitudinal direction and are parallel to each other. The four surfaces of the first side surface 51, the third side surface 53, the fourth side surface 54, and the sixth side surface 56 form a substantially rhombic cross-sectional shape perpendicular to the axial direction.

第２側面５２は、第１側面５１と第３側面５３との間に位置し、基準面４４との交線は銅線１，２の長手方向に略平行である。第５側面５５は、第４側面５４と第６側面５６との間に位置し、基準面４４との交線は銅線１，２の長手方向に略平行である。第２側面５２と第５側面５５の基準面４４との交線の長手方向長さは、第１，３，４，６側面と基準面４４との交線に比べて短く、４分の１程度である。 The second side surface 52 is located between the first side surface 51 and the third side surface 53, and the line of intersection with the reference surface 44 is substantially parallel to the longitudinal direction of the copper wires 1 and 2. The fifth side surface 55 is located between the fourth side surface 54 and the sixth side surface 56, and the line of intersection with the reference surface 44 is substantially parallel to the longitudinal direction of the copper wires 1 and 2. The length in the longitudinal direction of the line of intersection between the second side surface 52 and the reference surface 44 of the fifth side surface 55 is shorter than the intersection line between the first, third, fourth, and sixth sides and the reference surface 44, and is one-fourth. Degree.

図９に示すように、開き成形部４１の先端には、長手方向のラインから上方へ広がるように２面を面取りされたガイド部６１が形成されている。ガイド部６１は、パンチ３１が開き成形部４１から滑らかに銅線１，２間へ挿通するように案内する。なお、第１側面５１と第６側面５６との接続部であって、長手方向の端部に位置する部位には、面取り部６２が形成されている。この面取り部６２の幅は、概ね、結合導体線４の１本の幅と同じになっている。図示は省略するが、第３側面５３と第４側面５４との接続部にも同様の面取り部が形成されている。 As shown in FIG. 9, a guide portion 61 having two surfaces chamfered so as to extend upward from a line in the longitudinal direction is formed at the tip of the opening molding portion 41. The guide portion 61 guides the punch 31 to open and smoothly pass through the copper wires 1 and 2 from the molding portion 41. A chamfered portion 62 is formed at a portion of the connection portion between the first side surface 51 and the sixth side surface 56, which is located at the end portion in the longitudinal direction. The width of the chamfered portion 62 is substantially the same as the width of one of the bonded conductor wires 4. Although not shown, a similar chamfered portion is formed at the connecting portion between the third side surface 53 and the fourth side surface 54.

中間軸部４２は、開き成形部４１の基準面４４側に接続している軸状の部位である。中間軸部４２の軸方向に垂直な面における断面積は、基準面４４より小さく、大軸部４３よりも細くなっている。すなわち、中間軸部４２の軸方向断面の形状は、開き成形部４１および大軸部４３の軸方向断面の形状よりも小さくなっている。中間軸部４２の外周に切粉溜部５７が形成される。大軸部４３は、中間軸部４２において開き成形部４１とは反対側の端部に接続している。大軸部４３の、軸方向に垂直な断面形状は、基準面４４と略同一であるが、基準面４４より若干大きい。切削部５８は、大軸部４３において中間軸部４２側の端縁（下端縁）に形成され、接着部に当接して接着被膜５を切削することが可能である。 The intermediate shaft portion 42 is a shaft-shaped portion connected to the reference surface 44 side of the open forming portion 41. The cross-sectional area of the intermediate shaft portion 42 on the plane perpendicular to the axial direction is smaller than the reference plane 44 and thinner than the large shaft portion 43. That is, the shape of the axial cross section of the intermediate shaft portion 42 is smaller than the shape of the axial cross section of the open forming portion 41 and the large shaft portion 43. A chip reservoir 57 is formed on the outer periphery of the intermediate shaft portion 42. The large shaft portion 43 is connected to the end portion of the intermediate shaft portion 42 opposite to the open forming portion 41. The cross-sectional shape of the large shaft portion 43 perpendicular to the axial direction is substantially the same as that of the reference plane 44, but is slightly larger than that of the reference plane 44. The cutting portion 58 is formed at the end edge (lower end edge) on the intermediate shaft portion 42 side of the large shaft portion 43, and can abut on the adhesive portion to cut the adhesive coating 5.

パンチ３１は、その上方に配置される図示しない回転カム機構部に接続されている。回転カム機構の駆動により、パンチガイド３３にガイドされた状態でパンチ３１は往復動ラインＬ（図８参照）に沿って往復動する。パンチ３１は、パンチガイド３３においてパンチ３１と同軸に形成されるパンチ挿入孔６３を往復動可能となっている。回転カムの１回転により、パンチ３１は、図８（ａ）に示すセット時の上死点から、図８（ｃ）に示す下死点までの間を１往復する。 The punch 31 is connected to a rotary cam mechanism (not shown) arranged above the punch 31. By driving the rotary cam mechanism, the punch 31 reciprocates along the reciprocating line L (see FIG. 8) while being guided by the punch guide 33. The punch 31 can reciprocate through the punch insertion hole 63 formed coaxially with the punch 31 in the punch guide 33. Due to one rotation of the rotary cam, the punch 31 reciprocates once from the top dead center at the time of setting shown in FIG. 8 (a) to the bottom dead center shown in FIG. 8 (c).

スライドダイ３２は、パンチ３１の下方に対向して配置されるブロック部材であり、第１スライド部材６４と第２スライド部材６５とを備えている。スライドダイ３２は、ベース３５上に設けられている。第１スライド部材６４は、並設方向の一方側に設けられている。第２スライド部材６５は、第１スライド部材６４に対して往復動ラインＬを挟んで対向するように、第１スライド部材６４の他方側に設けられている。スライドダイ３２は、パンチ３１に連動し、往復動ラインＬを中心に並設方向に開閉動作が可能である。各スライド部材６４，６５は、パンチ３１の往動作に伴い、往復動ラインＬから離れる開方向にスライドし、パンチ３１の復動作に伴い往復動ラインＬに近づく閉方向にスライドする。 The slide die 32 is a block member arranged so as to face the lower side of the punch 31, and includes a first slide member 64 and a second slide member 65. The slide die 32 is provided on the base 35. The first slide member 64 is provided on one side in the parallel arrangement direction. The second slide member 65 is provided on the other side of the first slide member 64 so as to face the first slide member 64 with the reciprocating line L interposed therebetween. The slide die 32 is interlocked with the punch 31 and can be opened and closed in the parallel direction around the reciprocating line L. The slide members 64 and 65 slide in the open direction away from the reciprocating line L as the punch 31 moves forward, and slide in the closed direction approaching the reciprocating line L as the punch 31 returns.

各スライド部材６４，６５は、常時閉方向に付勢されており、パンチ３１の下降に伴って、付勢力に抗して移動し開状態となる。所定量の開状態で図示しないストッパにより停止するようになっている。開状態では、結合導体線４は逃げないようにスライドダイ３２によって四方から保持され、切削部５８による切削が実施される。 Each of the slide members 64 and 65 is always urged in the closing direction, and as the punch 31 descends, it moves against the urging force and becomes an open state. It is designed to be stopped by a stopper (not shown) in a predetermined amount of open state. In the open state, the coupling conductor wire 4 is held from all sides by the slide die 32 so as not to escape, and cutting is performed by the cutting portion 58.

図１１に示すように、第１スライド部材６４の往復動ラインＬ側には、第１銅線保持部６７が形成されている。第１銅線保持部６７は、第１スライド部材６４の上面から断面Ｌ字状に切り欠いて形成されている。第１銅線保持部６７には、第１銅線１が載置される。同様に、第２スライド部材６５の往復動ラインＬ側には、第２銅線保持部が形成されている。第２銅線保持部の構成は、第１銅線保持部６７と対称であって同様である。第２銅線保持部には、第２銅線２が載置される。 As shown in FIG. 11, a first copper wire holding portion 67 is formed on the reciprocating line L side of the first slide member 64. The first copper wire holding portion 67 is formed by cutting out from the upper surface of the first slide member 64 in an L-shaped cross section. The first copper wire 1 is placed on the first copper wire holding portion 67. Similarly, a second copper wire holding portion is formed on the reciprocating line L side of the second slide member 65. The configuration of the second copper wire holding portion is symmetrical to and similar to that of the first copper wire holding portion 67. The second copper wire 2 is placed on the second copper wire holding portion.

また、保持部６７の下面部であって、往復動ラインＬ側の対向面には、なだらかに外側へ凹んだ凹部６８が形成されている。この凹部６８は、パンチ３１が挿入されたときのパンチ３１の逃げ部として機能する。凹部６８の両端には直線部６９が形成されている。図８（ａ）に示すように、セット時の閉状態であるときには、第１スライド部材６４の直線部６９と、第２スライド部材６５の直線部とは当接する。この状態で、第１銅線保持部６７と第２銅線保持部とにより、結合導体線４を挿入可能な空間が形成される。 Further, a concave portion 68 which is a lower surface portion of the holding portion 67 and is gently recessed outward is formed on the facing surface on the reciprocating line L side. The recess 68 functions as a relief portion of the punch 31 when the punch 31 is inserted. Straight lines 69 are formed at both ends of the recess 68. As shown in FIG. 8A, when the product is in the closed state at the time of setting, the straight portion 69 of the first slide member 64 and the straight portion of the second slide member 65 come into contact with each other. In this state, the first copper wire holding portion 67 and the second copper wire holding portion form a space into which the coupled conductor wire 4 can be inserted.

次に、上記ラックプレス３０による、本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、および形状戻し工程Ｓ１０６の作動について図８および図１２を参照して説明する。図１２は、本開き工程Ｓ１０４時における状態を示す斜視図であり、分かりやすくするため、パンチ３１と結合導体線４のみを図示している。本開き工程Ｓ１０４は、接着部の一方側端部（図８における上端部）から他方側端部（図８における下端部）までの全部が離間するように、開き成形部４１により結合導体線４を開き成形する。接着被膜切削工程Ｓ１０５は、接着被膜剥離部１６により接着被膜５を切削する。形状戻し工程Ｓ１０６は、開き成形した結合導体線４を、菱形形状から元の直線状態に押し戻す。 Next, the operation of the main opening step S104, the adhesive film cutting step S105, and the shape returning step S106 by the rack press 30 will be described with reference to FIGS. 8 and 12. FIG. 12 is a perspective view showing a state at the time of the main opening step S104, and for the sake of clarity, only the punch 31 and the coupling conductor wire 4 are shown. In the main opening step S104, the connecting conductor wire 4 is formed by the opening forming portion 41 so that the entire portion from one side end portion (upper end portion in FIG. 8) to the other side end portion (lower end portion in FIG. 8) of the adhesive portion is separated. Open and mold. In the adhesive film cutting step S105, the adhesive film 5 is cut by the adhesive film peeling portion 16. The shape-returning step S106 pushes the open-formed bonded conductor wire 4 back from the rhombus shape to the original linear state.

図８（ａ）に示すように、結合導体線４がセットされる初期状態では、パンチ３１は、上死点の位置にある。また、スライドダイ３２は閉状態であり、第１スライド部材６４と第２スライド部材６５との対向面間（第１銅線保持部６７と第２銅線２保持部とにより形成される空間）に、仮開き工程Ｓ１０３を経た結合導体線４が挿入される。このとき、第１銅線１は第１スライド部材６４の第１銅線保持部６７上に位置する。第２銅線２は第２スライド部材６５の第２銅線保持部上に位置する。 As shown in FIG. 8A, in the initial state in which the connecting conductor wire 4 is set, the punch 31 is at the top dead center position. Further, the slide die 32 is in a closed state, and is between the facing surfaces of the first slide member 64 and the second slide member 65 (a space formed by the first copper wire holding portion 67 and the second copper wire 2 holding portion). Is inserted into the coupled conductor wire 4 that has undergone the temporary opening step S103. At this time, the first copper wire 1 is located on the first copper wire holding portion 67 of the first slide member 64. The second copper wire 2 is located on the second copper wire holding portion of the second slide member 65.

この状態で、回転カムが駆動されると、パンチ３１が往方向（図８において下側）へ下降する。このとき、パンチ３１の開き成形部４１は、その先端が、まず結合導体線４の一方側端部に当接する。一方側端部は、前工程の仮開き工程Ｓ１０３により一度離間しているため、パンチ３１は先端部からなめらかに銅線１，２間を挿通する。図８（ｂ）から図８（ｃ）の状態となる前までの間で、パンチ３１の開き成形部４１は、銅線１，２間を完全に挿通し、これにより本開き工程Ｓ１０４が完了する。本開き工程Ｓ１０４が完了した段階で、銅線１，２は、略菱形形状の間隔で離間している。 When the rotary cam is driven in this state, the punch 31 descends in the forward direction (lower side in FIG. 8). At this time, the tip of the open forming portion 41 of the punch 31 first abuts on one side end of the coupled conductor wire 4. Since the one side end portion is once separated by the temporary opening step S103 of the previous step, the punch 31 smoothly inserts between the copper wires 1 and 2 from the tip portion. From FIG. 8 (b) to before the state of FIG. 8 (c), the opening forming portion 41 of the punch 31 completely inserts between the copper wires 1 and 2, thereby completing the main opening step S104. do. When the main opening step S104 is completed, the copper wires 1 and 2 are separated by a substantially diamond-shaped interval.

本開き工程Ｓ１０４後、さらにパンチ３１が下死点まで下降する過程で、接着被膜切削工程Ｓ１０５が実施される。切削工程時には、ダイガイド３４（図１０参照）とスライドダイ３２とによって、銅線１，２の略菱形形状が維持される。そして、この状態で、パンチ３１がさらに下降することで、切削部５８が接着部に当接しながら下降し、接着被膜５は切削される。本開き工程Ｓ１０４後、図８（ｃ）までの間で、接着被膜切削工程Ｓ１０５が完了する。 After the main opening step S104, the adhesive film cutting step S105 is further performed in the process of lowering the punch 31 to the bottom dead center. During the cutting process, the die guide 34 (see FIG. 10) and the slide die 32 maintain the substantially rhombic shape of the copper wires 1 and 2. Then, in this state, the punch 31 is further lowered, so that the cutting portion 58 is lowered while being in contact with the adhesive portion, and the adhesive coating 5 is cut. After the main opening step S104, the adhesive film cutting step S105 is completed up to FIG. 8C.

接着被膜５の切削により生じた切粉は、切粉溜部５７に一時的に溜まる。図８（ｃ）に示すように、接着被膜切削工程Ｓ１０５が完了したとき、図示しない切粉除去機構が駆動されて、図中の矢印Ａ９に示すように、発生した切粉はエアーでパンチ３１から吹き飛ばされる。 The chips generated by cutting the adhesive film 5 temporarily accumulate in the chip reservoir 57. As shown in FIG. 8C, when the adhesive film cutting step S105 is completed, a chip removing mechanism (not shown) is driven, and as shown by arrow A9 in the figure, the generated chips are punched with air 31. Blowed away from.

下死点まで下降したパンチ３１は、今度は上昇し、このパンチ３１の復動作に連動して、スライドダイ３２は閉方向に移動する。そして、図８（ａ）に示す初期のセット状態と同様の状態に戻る。パンチ３１が銅線１，２より上方まで上昇したときには、菱形形状に開き成形された銅線１，２は、スライドダイ３２の閉動作に伴い、スライドダイ３２により往復動ラインＬ側へ押されて、元の直線状態に復帰する。 The punch 31 that has descended to the bottom dead center rises this time, and the slide die 32 moves in the closing direction in conjunction with the return operation of the punch 31. Then, it returns to the same state as the initial set state shown in FIG. 8 (a). When the punch 31 rises above the copper wires 1 and 2, the copper wires 1 and 2 formed in a diamond shape are pushed toward the reciprocating line L side by the slide die 32 as the slide die 32 closes. Then, it returns to the original linear state.

上記詳述したように、本開き工程Ｓ１０４、接着被膜切削工程Ｓ１０５、および形状戻し工程Ｓ１０６は、ラックプレス３０により、パンチ３１の一往復の動作で連続して行われる。形状戻し工程Ｓ１０６の後は、切断工程Ｓ１０７において、外部被膜３と接着被膜５とが除去された銅線１，２が、切断部１７により製品規格に併せたサイズに切断される。 As described in detail above, the main opening step S104, the adhesive film cutting step S105, and the shape returning step S106 are continuously performed by the rack press 30 in one reciprocating operation of the punch 31. After the shape-returning step S106, in the cutting step S107, the copper wires 1 and 2 from which the outer coating 3 and the adhesive coating 5 have been removed are cut to a size conforming to the product standard by the cutting portion 17.

［効果］
（１）例えば、結合導体線４ではなく、一本の銅線の外部被膜の剥離であれば、外部被膜剥離工程Ｓ１０１のみで良く、接着被膜５を剥離するスライド工程Ｓ１０２～形状戻し工程Ｓ１０６までの各工程は不要である。結合導体線４の場合は接着被膜５を剥離する必要があるため、当然、単数の銅線剥離に比べて工程数が多くなり生産性が悪化することが懸念される。 [effect]
(1) For example, if the outer coating of a single copper wire is peeled off instead of the bonded conductor wire 4, only the outer coating peeling step S101 is sufficient, and from the slide step S102 to the shape restoration step S106 for peeling the adhesive coating 5. Each step of is unnecessary. In the case of the bonded conductor wire 4, since it is necessary to peel off the adhesive film 5, there is a concern that the number of steps will be larger and the productivity will be deteriorated as compared with the peeling of a single copper wire.

しかし、上記実施形態の被膜剥離方法および被膜剥離装置では、接着被膜５を剥離するための一連の工程Ｓ１０２～Ｓ１０６のうち、本開き工程Ｓ１０４～形状戻し工程Ｓ１０６までは、共通のラックプレス３０により、パンチ３１の一往復の動作で連続して行われる。このため、必要最小限の工程増加ですみ、結合導体線４を構成する銅線１，２の剥離において、生産性を悪化させることなく接着被膜５を効率的に剥離することができる。また、一本の銅線の外部被膜を剥離する既存の設備に対して、仮開き部１５及び接着被膜剥離部１６を追加するだけで良く、大きく設備を変更させることなく銅線１，２の接着部を剥離する設備を構築することができる。また、パンチ３１は、１往復するだけの単純動作であり回転カム機構にて作動されるため高速加工が可能で、量産工法として最適である。 However, in the film peeling method and the film peeling apparatus of the above embodiment, of the series of steps S102 to S106 for peeling the adhesive film 5, the main opening step S104 to the shape returning step S106 are performed by a common rack press 30. , It is continuously performed by one reciprocating operation of the punch 31. Therefore, the adhesive film 5 can be efficiently peeled off without deteriorating the productivity in the peeling of the copper wires 1 and 2 constituting the bonded conductor wire 4 with the minimum necessary process increase. Further, it is only necessary to add the temporary opening portion 15 and the adhesive coating peeling portion 16 to the existing equipment for peeling the outer coating of one copper wire, and the copper wires 1 and 2 can be used without significantly changing the equipment. It is possible to construct equipment for peeling off the bonded portion. Further, the punch 31 is a simple operation of only one reciprocation and is operated by a rotary cam mechanism, so that high-speed machining is possible and it is most suitable as a mass production method.

（２）上記実施形態では、本開き工程Ｓ１０４の前工程として、スライド工程Ｓ１０２と仮開き工程Ｓ１０３を設けている。これらの工程Ｓ１０２、Ｓ１０３を経ることで、次の本開き工程Ｓ１０４でパンチ３１が接着部へ挿入されるときの入口が形成されるため、本開き工程Ｓ１０４でのパンチ３１の接着部への挿入が容易となる。 (2) In the above embodiment, a slide step S102 and a temporary opening step S103 are provided as a pre-step of the main opening step S104. By passing through these steps S102 and S103, an inlet is formed when the punch 31 is inserted into the adhesive portion in the next main opening step S104, so that the punch 31 is inserted into the adhesive portion in the main opening step S104. Becomes easier.

（３）また、仮開き工程Ｓ１０３の前にスライド工程Ｓ１０２を設けており、仮開き工程Ｓ１０３時には、接着部の銅線１，２同士の接着力が弱まった状態となっている。このため、仮開き工程Ｓ１０３において、ラックプレスの各可動ブロック２７，２８およびベース２６で各銅線１，２をホールドする保持力を小さくできる。銅線１，２は細くホールドする面積も小さいため、各チャック部２１，２３による保持力が大きいと銅線１，２に傷が付いてしまうが、本実施形態によれば、こうした傷や打痕が銅線１，２に残ることを抑制することができる。 (3) Further, a slide step S102 is provided before the temporary opening step S103, and at the time of the temporary opening step S103, the adhesive force between the copper wires 1 and 2 of the bonding portion is weakened. Therefore, in the temporary opening step S103, the holding force for holding the copper wires 1 and 2 by the movable blocks 27 and 28 and the base 26 of the rack press can be reduced. Since the copper wires 1 and 2 are thin and the holding area is small, if the holding force of each chuck portion 21 and 23 is large, the copper wires 1 and 2 will be scratched. It is possible to prevent the marks from remaining on the copper wires 1 and 2.

（４）上記実施形態では、パンチ３１の軸方向に垂直な断面が略菱形形状をなしており、本開き工程Ｓ１０４において、２本の銅線１，２を、往復動の方向から見たとき、略菱形形状をなすように開く。このように、菱形形状にすることで、例えば長方形状に変形させる場合と比べて、形状変形量を小さく抑えることができ、後の形状戻し工程Ｓ１０６で銅線１，２を直線形状に戻しやすい。 (4) In the above embodiment, the cross section perpendicular to the axial direction of the punch 31 has a substantially rhombic shape, and when the two copper wires 1 and 2 are viewed from the direction of reciprocating motion in the main opening step S104. , Opens in a roughly diamond-shaped shape. In this way, by forming the rhombus shape, the amount of shape deformation can be suppressed to be smaller than in the case of deforming into a rectangular shape, for example, and it is easy to return the copper wires 1 and 2 to a linear shape in the later shape returning step S106. ..

（５）上記実施形態では、パンチ３１の軸方向に垂直な断面が、並設方向の幅Ｗ１が長手方向の長さＷ２よりも小さい略菱形形状をなしている。このため、スライドダイ３２のスライド量を小さくでき、装置全体をコンパクトにできる。 (5) In the above embodiment, the cross section of the punch 31 perpendicular to the axial direction has a substantially rhombic shape in which the width W1 in the parallel direction is smaller than the length W2 in the longitudinal direction. Therefore, the slide amount of the slide die 32 can be reduced, and the entire device can be made compact.

（６）上記実施形態のパンチ３１は、開き成形部４１より軸方向断面の形状が大きい大軸部４３を有し、大軸部４３の先端側の縁に切削部５８が形成されている。そして、大軸部４３と開き成形部４１との間に同軸上に、開き成形部４１および大軸部４３よりも軸方向断面の形状が小さい中間軸部４２が形成されている。このため、パンチ３１の往動作内で大軸部４３が接着被膜５に接触することで切削部５８により接着被膜５を容易に切削することができる。また、軸方向断面の形状が小さく形成された中間軸部４２の外周が切粉溜部５７として機能するため、この切粉溜部５７に切削で生じた切粉が溜まり、エアーで簡単に切粉を除去することができる。 (6) The punch 31 of the above embodiment has a large shaft portion 43 having a larger axial cross section than the open forming portion 41, and a cutting portion 58 is formed on the edge of the large shaft portion 43 on the tip end side. Then, an intermediate shaft portion 42 having a smaller axial cross section than the open molding portion 41 and the large shaft portion 43 is formed coaxially between the large shaft portion 43 and the open molding portion 41. Therefore, the large shaft portion 43 comes into contact with the adhesive coating 5 during the forward operation of the punch 31, so that the adhesive coating 5 can be easily cut by the cutting portion 58. Further, since the outer periphery of the intermediate shaft portion 42 having a small axial cross section functions as the chip storage portion 57, chips generated by cutting collect in the chip storage portion 57 and are easily cut by air. The powder can be removed.

〈他の実施形態〉
上記実施形態では、２本の銅線１，２を、往復動の方向から見たとき、略菱形形状をなすように開き成形したが、図１３（ａ）に示すように、長手方向に長い略長方形状をなすようにしても良い。この場合、図１３（ｂ）に示すように、パンチ７１の形状は、軸方向断面が対応する略長方形状をなすように形成される。 <Other embodiments>
In the above embodiment, the two copper wires 1 and 2 are opened and molded so as to form a substantially rhombic shape when viewed from the direction of reciprocating motion, but as shown in FIG. 13A, they are long in the longitudinal direction. It may be formed in a substantially rectangular shape. In this case, as shown in FIG. 13B, the shape of the punch 71 is formed so that the axial cross sections form a corresponding substantially rectangular shape.

さらに、図１４（ａ）に示すように、円形状をなすように成形しても良い。この場合、図１４（ｂ）に示すように、パンチ７２の形状は軸方向断面が対応する円形状をなすように形成され、例えば開き成形部７３は円錐形状に形成される。 Further, as shown in FIG. 14A, it may be formed into a circular shape. In this case, as shown in FIG. 14 (b), the shape of the punch 72 is formed so that the axial cross sections form a corresponding circular shape, and for example, the opening molded portion 73 is formed into a conical shape.

上記実施形態では、２本の銅線１，２が接着された結合導体線４としたが、３本以上の複数の銅線が接着されて構成される結合導体線としても良い。この場合、外部被膜３を剥離した後、スライド工程Ｓ１０２～形状戻し工程Ｓ１０６までの各工程を、複数の接着部に対して順に実施しても良い。例えば、４本の銅線が２×２の配置で接着されて形成される結合導体線であれば、十字をなす２箇所の接着部のうち、１箇所に対してまずスライド工程Ｓ１０２～形状戻し工程Ｓ１０６を実施し、次いで、もう１箇所に対してスライド工程Ｓ１０２～形状戻し工程Ｓ１０６を実施するようにしても良い。 In the above embodiment, the coupled conductor wire 4 in which two copper wires 1 and 2 are bonded is used, but it may be a coupled conductor wire composed of three or more copper wires bonded together. In this case, after the outer coating film 3 is peeled off, each step from the slide step S102 to the shape return step S106 may be sequentially performed on the plurality of bonded portions. For example, in the case of a bonded conductor wire formed by bonding four copper wires in a 2 × 2 arrangement, first, the slide step S102 to return the shape to one of the two bonded portions forming a cross. The step S106 may be carried out, and then the slide step S102 to the shape return step S106 may be carried out for the other location.

本発明は、上述した実施形態に限定されるものではなく、発明の趣旨を逸脱しない範囲で種々の形態で実施可能である。 The present invention is not limited to the above-described embodiment, and can be implemented in various forms without departing from the spirit of the invention.

１，２・・・銅線（被膜導体線）
３・・・外部被膜
４・・・結合導体線
５・・・接着被膜
３０・・・ラックプレス（被膜剥離装置）
３１・・・パンチ
３２・・・スライドダイ
Ｓ１０１・・・外部被膜剥離工程
Ｓ１０２・・・スライド工程
Ｓ１０３・・・仮開き工程
Ｓ１０４・・・本開き工程
Ｓ１０５・・・接着被膜切削工程
Ｓ１０６・・・形状戻し工程 1, 2, ・・・ Copper wire (coated conductor wire)
3 ・・・ External coating 4 ・・・ Bonded conductor wire 5 ・・・ Adhesive coating 30 ・・・ Rack press (coating peeling device)
31 ・・・ Punch 32 ・・・ Slide die S101 ・・・ External film peeling process S102 ・・・ Slide process S103 ・・・ Temporary opening process S104 ・・・ Main opening process S105 ・・・ Adhesive film cutting process S106 ・・・ Shape return process

Claims

At least two coated conductor wires (1, 2) having a substantially quadrangular cross section and extending linearly are bonded in a juxtaposed state, and one bond having an outer coating (3) on the outer circumference is formed. A method for peeling a coating of a coupling conductor wire for a rotating machine, which partially peels off the outer coating and the adhesive coating (5) of the adhesive portion of the coated conductor wire in the conductor wire (4).
The outer film peeling step (S101) for peeling the outer film and
When viewed in a cross section perpendicular to the longitudinal direction in which the coated conductor wire extends linearly, if the direction orthogonal to the juxtaposed direction of the coated conductor wire is an orthogonal direction, after the outer coating peeling step, the bonded portion A slide step (S102) in which the coated conductor wire is relatively slid in the orthogonal direction, and
After the slide step, a temporary opening step (S103) of opening one end of the adhesive portion in the orthogonal direction so that the coated conductor wires are separated from each other in the parallel direction.
A punch (31) having an open forming portion (41) at the tip and a cutting portion (58) formed on the other end side of the open forming portion and capable of reciprocating in the orthogonal direction is provided facing the punch. In conjunction with the punch, the punch slides in the open direction away from the line (L) where the punch reciprocates with the forward movement of the punch, and slides in the closed direction toward the line with the return movement of the punch. , A slide die (32) capable of opening and closing in the parallel direction around the line is used, and after the temporary opening step, the punch inserted from the one side end portion temporarily opened. A main opening step of opening and molding the coated conductor wire by the opening forming portion so that the coating conductor wire is separated from the one side end portion to the other side end portion of the adhesive portion in the forward operation. S104) and
After the main opening step, the adhesive film cutting step of cutting the adhesive film by the cutting portion with the further forward operation of the punch while maintaining the shape of the coated conductor wire by the slide die stopped in the open state. (S105) and
After the adhesive coating cutting step, the slide die closes to the punch side in conjunction with the return operation of the punch, so that the open-formed coated conductor wire is pushed back to the original linear state (S106). )When,
Including
The main opening step, the adhesive film cutting step, and the shape returning step are methods for peeling a film of a bonded conductor wire, which are continuously performed by one reciprocating operation of the punch.

The method for peeling a coating of a bonded conductor wire according to claim 1, wherein in the main opening step, the shape formed by the opened coated conductor wire has a substantially rhombic shape when viewed from the direction of the reciprocating motion.

At least two coated conductor wires (1, 2) having a substantially quadrangular cross section and extending linearly are bonded in a juxtaposed state, and one bond having an outer coating (3) on the outer periphery is formed. A coating stripping device for a bonded conductor wire for a rotating machine for partially peeling an adhesive coating (5) at an adhesive portion of the coated conductor wire in the conductor wire (4).
When viewed in a cross section perpendicular to the longitudinal direction in which the coated conductor wire extends linearly and has an open molded portion (41) at the tip and a cutting portion (58) formed on the other end side of the open molded portion. A punch (31) capable of reciprocating in an orthogonal direction, which is a direction orthogonal to the parallel direction of the coated conductor wires, and a punch (31).
It is provided facing the punch and slides in the open direction away from the line (L) where the punch reciprocates with the forward movement of the punch, and slides in the closed direction approaching the line with the return movement of the punch. A slide die (32) that is interlocked with the punch and can be opened and closed in the parallel direction around the line.
A coating stripping device.

The coating stripping device according to claim 3, wherein the opening molded portion has a substantially rhombic cross section in the axial direction and a tapered tip.

The coating stripping device according to claim 4, wherein the opening molding portion is formed so that the width (W1) in the parallel direction is smaller than the length (W2) in the longitudinal direction.

The punch is
With the opening molding part,
A large shaft portion (43) having a larger axial cross-sectional shape than the open molded portion,
An intermediate shaft portion (42) formed coaxially between the open molded portion and the large shaft portion and having a smaller axial cross-sectional shape than the open molded portion and the large shaft portion.
The film peeling device according to any one of claims 3 to 5, wherein the cutting portion is formed on the edge of the large shaft portion on the intermediate shaft portion side.