JP5833953B2 - Twisted wire manufacturing apparatus and twisted wire manufacturing method - Google Patents

Twisted wire manufacturing apparatus and twisted wire manufacturing method Download PDF

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JP5833953B2
JP5833953B2 JP2012047651A JP2012047651A JP5833953B2 JP 5833953 B2 JP5833953 B2 JP 5833953B2 JP 2012047651 A JP2012047651 A JP 2012047651A JP 2012047651 A JP2012047651 A JP 2012047651A JP 5833953 B2 JP5833953 B2 JP 5833953B2
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実良 間渕
実良 間渕
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Description

本発明は、複数の電線を撚り合わせて成る撚り合わせ線を製造するための撚り合わせ線製造装置、及び撚り合わせ線製造方法に関する。   The present invention relates to a twisted wire manufacturing apparatus and a twisted wire manufacturing method for manufacturing a twisted wire formed by twisting a plurality of electric wires.

撚り合わせ線として一般的なツイストペア線は、電磁波の発生を抑制したり、電磁波を吸収したりすることができる電線であって、複数本（例えば、２本）の電線を撚り合わせることにより製造されている。このようなツイストペアは、例えば、図４に示す製造方法によって製造されたり、図６に示す製造装置１００を用いて製造されたりしている（例えば、特許文献１参照）。図５に示す製造方法は、２本の電線Ｗの一端部（図中、左側の端部）と他端部（図中、右側の端部）とをそれぞれ個別に保持した状態で、各電線Ｗの一端部側及び他端部側の少なくとも一方をまとめて回転（公転）させることで、２本の電線Ｗを互いに密着させて撚り合せるようになっている。   A twisted pair wire generally used as a twisted wire is an electric wire that can suppress generation of electromagnetic waves or absorb electromagnetic waves, and is manufactured by twisting a plurality of wires (for example, two wires). ing. Such a twisted pair is manufactured by, for example, the manufacturing method shown in FIG. 4 or manufactured using the manufacturing apparatus 100 shown in FIG. 6 (see, for example, Patent Document 1). In the manufacturing method shown in FIG. 5, one end part (left end part in the figure) and the other end part (right end part in the figure) of each of the two electric wires W are individually held. By rotating (revolving) at least one of the one end side and the other end side of W together, the two electric wires W are brought into close contact with each other and twisted together.

一方、図６に示す製造装置１００は、２本の電線Ｗの一端部（図中、左側の端部）をそれぞれ保持するとともに、各電線Ｗを該電線Ｗの軸芯を中心として回転させることによって各電線Ｗを捩る複数（２個）の第１回転保持部１０１と、各電線Ｗの他端部（図中、右側の端部）を束ねて保持するとともに、各電線Ｗの捩じりを解消する方向に他端部側を回転させる第２回転保持部１０２と、第１回転保持部１０１と第２回転保持部１０２との間に配置され、第２回転保持部１０２側から第１回転保持部１０１側へ向けてスライド移動する移動部材１０３と、を備えて構成されている。この製造装置１００は、複数の第１回転保持部１０１を回転（自転）させつつ、第２回転保持部１０２を回転（公転）させるとともに、移動部材１０３を第１回転保持部１０１に向かって移動させることで、第２回転保持部１０２と移動部材１０３との間で複数の電線Ｗを撚り合せるようになっている。   On the other hand, the manufacturing apparatus 100 shown in FIG. 6 holds one end (the left end in the figure) of the two electric wires W and rotates each electric wire W around the axis of the electric wire W. The plurality of (two) first rotation holding portions 101 for twisting each electric wire W and the other end portion (the right end portion in the figure) of each electric wire W are bundled and held, and the electric wires W are twisted. Is disposed between the second rotation holding unit 102 and the second rotation holding unit 102, and the first rotation holding unit 102 side first. And a moving member 103 that slides toward the rotation holding unit 101 side. The manufacturing apparatus 100 rotates (revolves) the plurality of first rotation holding units 101, rotates (revolves) the second rotation holding unit 102, and moves the moving member 103 toward the first rotation holding unit 101. By doing so, a plurality of electric wires W are twisted between the second rotation holding unit 102 and the moving member 103.

特開２００９−２３１１５７号公報JP 2009-231157 A

しかしながら、上述した従来の製造方法によって電線Ｗを撚り合わせた場合には、各電線Ｗ間の摩擦によって電線Ｗに捩じれ（周方向に伸び）が生じ、このような捩じれが撚り合わせ後にも残留することから、撚り合わせ線の撚りが戻ってしまうことがある。一方、従来の製造装置１００を用いて撚り合わせ線を製造する場合には、第１回転保持部１０１及び第２回転保持部１０２の回転を同期させるとともに、移動部材１０３の移動も同期させることで、撚り合わせ後における電線Ｗの捩じれが抑制できるものの、各部の同期をとるための制御が煩雑になって、製造装置１００の構造が複雑かつ大型化して高コスト化してしまうという問題がある。   However, when the electric wires W are twisted by the conventional manufacturing method described above, the electric wires W are twisted (elongated in the circumferential direction) due to friction between the electric wires W, and such twists remain even after the twisting. For this reason, the twist of the stranded wire may return. On the other hand, when manufacturing a twisted wire using the conventional manufacturing apparatus 100, the rotation of the first rotation holding unit 101 and the second rotation holding unit 102 is synchronized and the movement of the moving member 103 is also synchronized. Although the twisting of the electric wire W after twisting can be suppressed, there is a problem that the control for synchronizing the respective parts becomes complicated and the structure of the manufacturing apparatus 100 is complicated and large, resulting in an increase in cost.

したがって、本発明は、装置の小型化と低コスト化を図るとともに製造した撚り合わせ線の撚りが戻るのを抑制することができる撚り合わせ線製造装置、及び撚り合わせ線製造方法を提供することを目的とする。   Accordingly, the present invention provides a twisted wire manufacturing apparatus and a twisted wire manufacturing method capable of reducing the size and cost of the device and suppressing the twist of the manufactured twisted wire from returning. Objective.

請求項１記載の撚り合わせ線製造装置は、複数の電線を撚り合わせて撚り合わせ線を製造するための撚り合わせ線製造装置であって、前記複数の電線の一方側の端末部をまとめて把持する一方側の保持部材と、前記複数の電線の他方側の端末部を各々把持するとともに各電線をそれぞれの軸芯を中心に回転させる複数の回転保持部材と、前記複数の回転保持部材を回転駆動させる駆動部と、前記複数の電線の各々に張力を付与する張力付与手段と、を備え、前記張力付与手段によって前記複数の電線の各々に張力が付与された状態において、前記一方側の保持部材によって前記電線の一方側の端末部を把持して回転を規制し、前記回転保持部材によって前記複数の電線をそれぞれ所定回転数だけ回転させて捩ってから、前記一方側の保持部材による前記一方側の端末部の回転規制を解除することで、前記複数の電線を互いに撚り合わせることを特徴とする。   The twisted wire manufacturing device according to claim 1 is a twisted wire manufacturing device for twisting a plurality of electric wires to manufacture a twisted wire, and gripping the terminal portions on one side of the plurality of electric wires together. A holding member on one side, a plurality of rotation holding members that respectively grip the terminal portions on the other side of the plurality of electric wires, and rotate each electric wire around its respective axis, and rotate the plurality of rotation holding members A driving unit for driving and tension applying means for applying tension to each of the plurality of electric wires, and holding the one side in a state where tension is applied to each of the plurality of electric wires by the tension applying means. The one end of the electric wire is gripped by the member to restrict the rotation, and the plurality of electric wires are rotated by a predetermined number of rotations by the rotation holding member and then twisted, and then the one holding member In the meantime releasing the rotation restriction of the side of the terminal portion by, and wherein the twisting together said plurality of wires to each other.

請求項２記載の撚り合わせ線製造装置は、請求項１記載の撚り合わせ線製造装置において、前記張力付与手段は、前記一方側の保持部材をスライド自在に支持する支持部材と、前記一方側の保持部材を前記複数の回転保持部材から離れる方向に付勢する付勢手段と、を備え、前記付勢手段の復元力によって、前記一方側の保持部材が前記複数の回転保持部材から離れる方向に移動されることにより、前記複数の電線の各々に張力が付与されることを特徴とする。   The twisted wire manufacturing apparatus according to claim 2 is the twisted wire manufacturing apparatus according to claim 1, wherein the tension applying means includes a support member that slidably supports the holding member on the one side, and a support member on the one side. An urging means for urging the holding member in a direction away from the plurality of rotation holding members, and the one side holding member is separated from the plurality of rotation holding members by a restoring force of the urging means. By being moved, tension is applied to each of the plurality of electric wires.

請求項３記載の撚り合わせ線製造方法は、複数の電線を撚り合わせて撚り合わせ線を製造するための撚り合わせ線製造方法であって、前記撚り合わせ線における前記複数の電線のうちの一組は、連続する１本の電線を折返し部で折り返した一方の第一電線部と他方の第二電線部とで構成されるものであり、前記一方の第一電線部及び前記他方の第二電線部に張力が付与された状態において、前記折返し部を把持して回転を規制し、前記第一電線部の端末側及び前記第二電線部の端末側をそれぞれ所定回転数だけ回転させて捩じる捩じり工程と、前記捩じり工程の後に、前記折返し部の回転規制を解除して前記第一電線部と前記第二電線部とを互いに撚り合わせる撚り合わせ工程と、を備えたことを特徴とする。   The twisted wire manufacturing method according to claim 3 is a twisted wire manufacturing method for manufacturing a twisted wire by twisting a plurality of electric wires, and a set of the plurality of wires in the twisted wire. Is composed of one first electric wire portion and the other second electric wire portion obtained by folding one continuous electric wire at the folding portion, and the one first electric wire portion and the other second electric wire portion. In a state where tension is applied to the part, the rotation is gripped by restricting the rotation, and the terminal side of the first electric wire part and the terminal side of the second electric wire part are respectively rotated by a predetermined number of rotations and twisted. A twisting step, and after the twisting step, a twisting step of releasing the rotation restriction of the folded portion and twisting the first electric wire portion and the second electric wire portion together. It is characterized by.

請求項１記載の本発明によれば、電線の一方側の端末部の回転を規制し、電線の各々に張力が付与された状態で各電線を回転（自転）させて捩じり、その後に一方側の端末部の回転規制を解除することで、各電線の捩じりを解消する方向に一方側の端末部がまとめて回転（公転）することで、複数の電線が互いに撚り合わされる。この際、各電線においては、電線の各々に張力が付与された状態で回転されるから、電線同士が互いに絡みあうことを防止することができ、かつ各電線はその全長に亘って均質に捩じられる。その後に、各電線の捩じりを解消する方向に回転されることから、撚りピッチが均一化されるとともに、捩じれによる伸びや応力が残留しにくくでき、撚り合わせ線の撚りが戻ることを抑制させることができる。また、電線の一方側と他方側とで回転数や回転速度などを同期させなくてもよい上、従来の装置における移動部材を用いる必要もないので、装置構造や駆動制御を簡素化して比較的安価に装置を構成することができる。   According to the first aspect of the present invention, the rotation of the terminal portion on one side of the electric wire is restricted, and each electric wire is rotated (spinned) in a state where tension is applied to each electric wire, and then twisted. By releasing the rotation restriction of the terminal portion on one side, the terminal portions on one side collectively rotate (revolve) in a direction to eliminate the twisting of each electric wire, so that the plurality of wires are twisted together. At this time, each electric wire is rotated in a state where tension is applied to each electric wire, so that the electric wires can be prevented from being entangled with each other, and each electric wire is uniformly twisted over its entire length. It will be twisted. After that, it is rotated in the direction to eliminate twisting of each electric wire, so that the twisting pitch is made uniform, elongation and stress due to twisting are less likely to remain, and the twisting of the twisted wire is prevented from returning. Can be made. In addition, it is not necessary to synchronize the number of rotations and the rotation speed between the one side and the other side of the electric wire, and it is not necessary to use a moving member in a conventional device, so that the device structure and drive control are simplified and relatively The apparatus can be configured at low cost.

なお、本発明において、一方側の保持部材がまとめて把持する電線の一方側の端末部としては、複数の電線が各々切断された個別の端末部であってもよいし、１本の電線を折り返して２本とした折返し部を一方側の端末部としてもよく、さらには、１本の電線を折返し部で折り返したものを複数本まとめたものの複数の折返し部を一方側の端末部としてもよい。   In addition, in this invention, as one terminal part of the electric wire which a holding member of one side hold | grips collectively, the individual terminal part from which the some electric wire was each cut | disconnected may be sufficient, and one electric wire is used. The folded portion that is folded into two may be used as the terminal portion on one side, and moreover, a plurality of folded portions of a single electric wire folded at the folded portion may be used as the one side terminal portion. Good.

請求項２記載の本発明によれば、張力付与手段は、付勢手段の復元力によって一方側の保持部材を複数の回転保持部材から離れる方向に移動させることにより、各電線に張力が付与されるから、電線の各々にかかる張力が均等化されることとなり、撚りピッチをより一層均一化できる。   According to the second aspect of the present invention, the tension applying unit applies the tension to each electric wire by moving the holding member on one side away from the plurality of rotating holding members by the restoring force of the biasing unit. Therefore, the tension applied to each of the electric wires is equalized, and the twist pitch can be further uniformized.

請求項３記載の本発明によれば、第一及び第二の各電線部に張力が付与された状態で、捩じり工程において第一電線部と第二電線部とをそれぞれ捩じってから、撚り合わせ工程において折返し部の回転規制を解除して第一電線部と第二電線部とを互いに撚り合せることで、前述したのと同様に、第一及び第二の各電線部において捩じれによる伸びや応力が残留しにくくできる。そして、第一電線部と第二電線部とを互いに撚り合わせた後に、折返し部の近傍で第一電線部及び第二電線部を切断することによって、撚りピッチが均一化されるとともに、撚り戻りの少ない撚り合わせ線を製造することができる。   According to the third aspect of the present invention, the first electric wire portion and the second electric wire portion are respectively twisted in the twisting step in a state where tension is applied to the first and second electric wire portions. In the twisting step, the first wire portion and the second wire portion are twisted together by releasing the rotation restriction of the folded portion and twisting the first and second wire portions in the same manner as described above. Elongation and stress due to can hardly remain. And after twisting together the 1st electric wire part and the 2nd electric wire part, the twist pitch is made uniform by cutting the 1st electric wire part and the 2nd electric wire part in the neighborhood of the turned-up part, and twisting back It is possible to produce a twisted wire with a small amount of wire.

本発明の一実施の形態に係る撚り合わせ線製造装置を示す斜視図である。It is a perspective view which shows the twisted wire manufacturing apparatus which concerns on one embodiment of this invention. 図１に示された撚り合わせ線製造装置の要部を拡大して示す斜視図である。It is a perspective view which expands and shows the principal part of the twisted wire manufacturing apparatus shown by FIG. 図１に示された撚り合わせ線製造装置の要部を拡大して示す図である。It is a figure which expands and shows the principal part of the twisted wire manufacturing apparatus shown by FIG. 図１に示された撚り合わせ線製造装置の動作説明図である。It is operation | movement explanatory drawing of the twisted wire manufacturing apparatus shown by FIG. 従来の撚り合わせ線の製造方法を示す概略図である。It is the schematic which shows the manufacturing method of the conventional twisted wire. 図５とは異なる従来の撚り合わせ線の製造装置の動作説明図である。It is operation | movement explanatory drawing of the manufacturing apparatus of the conventional twisted wire different from FIG.

本発明の一実施の形態にかかる撚り合わせ線製造装置を図１〜図４を用いて説明する。撚り合わせ線製造装置１は、複数本の電線２を撚り合わせた撚り合わせ線を製造するものであって、本実施形態では、２本撚りの撚り合わせ線であるツイストペア線を製造する装置を例示して説明する。なお、本発明の製造装置によって製造される撚り合わせ線としては、２本の電線２を撚り合わせたものに限らず、３本以上の電線２を撚り合わせた多芯ケーブルであってもよい。   A twisted wire manufacturing apparatus according to an embodiment of the present invention will be described with reference to FIGS. The twisted wire manufacturing apparatus 1 manufactures a twisted wire in which a plurality of electric wires 2 are twisted, and in this embodiment, an apparatus for manufacturing a twisted pair wire that is a twisted wire of two twists is illustrated. To explain. In addition, as a stranded wire manufactured by the manufacturing apparatus of this invention, the multi-core cable which twisted not less than the two electric wires 2 but twisted three or more electric wires 2 may be sufficient.

撚り合わせ線製造装置１は、図１に示すように、略水平に延びる長尺状の受け台３と、受け台３の長手方向一方側（図１の右下側）に設けられて電線２の一方側の端末部を保持する第１保持部４と、受け台３の長手方向他方側（図１の左上側）に設けられた電線２の他方側の端末部を保持する第２保持部５と、この第２保持部５を駆動するための駆動部６と、第１保持部４の近傍に設けられて該装置１を駆動操作するための操作部７と、電線２に張力を付与する張力付与手段８と、を備えて構成されている。   As shown in FIG. 1, the twisted wire manufacturing apparatus 1 is provided with a long pedestal 3 that extends substantially horizontally and one side in the longitudinal direction of the cradle 3 (lower right side in FIG. 1). 1st holding part 4 which holds the terminal part of one side of this, and the 2nd holding part which holds the terminal part of the other side of electric wire 2 provided in the longitudinal direction other side (left upper side of Drawing 1) of cradle 3 5, a drive unit 6 for driving the second holding unit 5, an operation unit 7 provided in the vicinity of the first holding unit 4 for driving the device 1, and applying tension to the electric wire 2 Tension applying means 8 to be configured.

電線２は、連続する１本の電線を第１保持部４側の折返し部２Ａで折り返され、この折返し部２Ａから第２保持部５に向かって延びる第一電線部２Ｂと第二電線部２Ｃとで構成されている。即ち、第一電線部２Ｂ及び第二電線部２Ｃの一方側の端末部としての折返し部２Ａが第１保持部４に保持され、第一電線部２Ｂ及び第二電線部２Ｃの他方側の各端末部２Ｄ，２Ｅが第２保持部５に保持されるようになっている。   The electric wire 2 is a first electric wire portion 2B and a second electric wire portion 2C extending from the folded portion 2A toward the second holding portion 5 by folding back one continuous electric wire at the folding portion 2A on the first holding portion 4 side. It consists of and. That is, the folded portion 2A as a terminal portion on one side of the first electric wire portion 2B and the second electric wire portion 2C is held by the first holding portion 4, and each of the other sides of the first electric wire portion 2B and the second electric wire portion 2C. The terminal units 2D and 2E are held by the second holding unit 5.

受け台３は、作業者が作業しやすい高さに設けられて電線２をセットするためのテーブル３１と、テーブル３１の端部に設けられて第２保持部５を覆うカバー３２と、を備える。テーブル３１は、素材としての電線２や製品としての撚り合わせ線を受け入れ可能な全体凹溝状に形成されており、このテーブル３１上にて引き伸ばした電線２を折り曲げて第１保持部４や第２保持部５に保持させる作業が行えるようになっている。また、カバー３２は、テーブル３１に回動自在に支持されており、第２保持部５を覆う状態から上方に開いて第２保持部５を作業者が操作できる状態まで開閉自在に構成されている。   The cradle 3 includes a table 31 that is provided at a height at which an operator can easily work and sets the electric wire 2, and a cover 32 that is provided at an end of the table 31 and covers the second holding unit 5. . The table 31 is formed in an overall concave groove shape that can receive the electric wire 2 as a material and a twisted wire as a product. The electric wire 2 stretched on the table 31 is bent to form the first holding portion 4 and the second holding portion 4. 2 The work to be held by the holding unit 5 can be performed. The cover 32 is rotatably supported by the table 31, and is configured to be openable and closable from a state of covering the second holding part 5 to a state in which the second holding part 5 can be operated by an operator by opening upward. Yes.

第１保持部４は、図２にも示すように、受け台３に固定されるベース板４１と、このベース板４１上にスライド自在に支持された軸支部４２と、この軸支部４２に回転可能かつ回転を規制可能に支持された一方側の保持部材としての第１保持部材４３と、を備える。第１保持部材４３は、軸支部４２に支持されて受け台３の長手方向に延びる回転軸４４と、この回転軸４４に固定された回転体４５と、この回転体４５の先端側（第２保持部５側）に設けられた把持受部４６と、把持受部４６に向かって進退自在に設けられて電線２の折返し部２Ａを把持受部４６との間に把持可能な把持部４７と、この把持部４７を回転体４５に対して進退移動させる把持操作レバー４８と、を有して構成されている。このような第１保持部４は、図示しない回転規制部の切り替え操作によって、軸支部４２に対して回転軸４４回りに回転自在な回転可能状態と、この回転を規制した回転規制状態と、の両状態が切り替え可能に構成されている。   As shown in FIG. 2, the first holding unit 4 includes a base plate 41 that is fixed to the cradle 3, a shaft support 42 that is slidably supported on the base plate 41, and a rotation that is supported by the shaft support 42. A first holding member 43 as a holding member on one side supported so as to be capable of restricting rotation. The first holding member 43 is supported by the shaft support portion 42 and extends in the longitudinal direction of the cradle 3, a rotating body 45 fixed to the rotating shaft 44, and a tip side (second side) of the rotating body 45. A grip receiving portion 46 provided on the holding portion 5 side), and a gripping portion 47 provided so as to be movable forward and backward toward the grip receiving portion 46 and capable of gripping the folded portion 2A of the electric wire 2 between the grip receiving portion 46 and The gripping operation lever 48 that moves the gripping portion 47 forward and backward with respect to the rotating body 45 is provided. Such a first holding unit 4 includes a rotatable state in which the shaft support unit 42 can rotate around the rotation shaft 44 by a switching operation of a rotation regulating unit (not shown), and a rotation regulated state in which the rotation is regulated. Both states are configured to be switchable.

第１保持部材４３は、回転可能状態において、電線２の端末部を把持し、把持したままで自然回転される。本実施形態では、第１保持部材４３は、該第１保持部材４３を回転駆動させる駆動部を有していないが、第１保持部材４３は、該第１保持部材４３を回転駆動させる駆動部を有し、この駆動部の駆動力によって回転されてもよい。   In the rotatable state, the first holding member 43 grips the terminal portion of the electric wire 2 and is naturally rotated while being gripped. In the present embodiment, the first holding member 43 does not have a driving unit that rotationally drives the first holding member 43, but the first holding member 43 has a driving unit that rotationally drives the first holding member 43. And may be rotated by the driving force of the driving unit.

第２保持部５は、受け台３に固定されるベース板５１と、このベース板５１に固定された一対の軸支部５２と、これら一対の軸支部５２にそれぞれ回転可能かつ回転を規制可能に支持された回転保持部材としての一対の第２保持部材５３と、を備える。一対の第２保持部材５３は、それぞれ前記第１保持部材４３と略同様に構成され、即ち、軸支部５２に支持されて受け台３の長手方向に延びる回転軸５４と、この回転軸５４に固定された回転体５５と、この回転体５５の先端側（第１保持部４側）に設けられた把持受部５６と、把持受部５６にむかって進退自在に設けられて電線２の端末部２Ｄ，２Ｅを把持受部５６との間に把持可能な把持部５７と、この把持部５７を回転体５５に対して進退移動させる把持操作レバー５８と、を有して構成されている。   The second holding part 5 is capable of rotating and restricting the rotation of the base plate 51 fixed to the cradle 3, the pair of shaft support parts 52 fixed to the base plate 51, and the pair of shaft support parts 52. And a pair of second holding members 53 as supported rotation holding members. The pair of second holding members 53 are configured in substantially the same manner as the first holding member 43, that is, a rotation shaft 54 that is supported by the shaft support 52 and extends in the longitudinal direction of the cradle 3, and the rotation shaft 54. The fixed rotating body 55, the grip receiving section 56 provided on the distal end side (first holding section 4 side) of the rotating body 55, and the terminal of the electric wire 2 provided to be movable forward and backward toward the grip receiving section 56. A gripping portion 57 capable of gripping the portions 2D and 2E between the grip receiving portion 56 and a gripping operation lever 58 for moving the gripping portion 57 forward and backward with respect to the rotating body 55 are configured.

駆動部６は、受け台３の長手方向他方側端部に設けられて電力及び制御信号を送出する電装部６１と、この電装部６１からの電力及び制御信号によって駆動されるモータ６２と、このモータ６２と一方の第２保持部材５３の回転軸５４とに連結された第１ギア６３と、他方の第２保持部材５３の回転軸５４に連結された第２ギア６４と、これら第１及び第２のギア６３、６４に巻き回された歯付きベルト６５と、を有して構成されている。このような駆動部６は、モータ６２の回転によって第１ギア６３及び一方の第２保持部材５３を回転駆動するとともに、第１ギア６３から歯付きベルト６５を介して第２ギア６４及び他方の第２保持部材５３を回転駆動するものであって、即ち、一方及び他方の第２保持部材５３を同期させて同一方向に等速度で回転させる同期駆動部として機能する。   The drive unit 6 is provided at an end portion on the other side in the longitudinal direction of the cradle 3 and sends an electric power and a control signal, a motor 62 driven by the electric power and the control signal from the electric component 61, and this A first gear 63 connected to the motor 62 and the rotation shaft 54 of one second holding member 53; a second gear 64 connected to the rotation shaft 54 of the other second holding member 53; And a toothed belt 65 wound around the second gears 63 and 64. Such a drive unit 6 rotationally drives the first gear 63 and the one second holding member 53 by the rotation of the motor 62, and the second gear 64 and the other gear from the first gear 63 via the toothed belt 65. The second holding member 53 is rotationally driven, that is, functions as a synchronous drive unit that synchronizes one and the other second holding members 53 to rotate in the same direction at a constant speed.

操作部７は、第１保持部４のベース板４１上に設けられた２個のスイッチ７１、７２を備える。スイッチ７１は作動スイッチであり、このスイッチ７１を作業者が押し下げることで、駆動部６に信号が送出され、この信号を受信した電装部６１からの制御信号によってモータ６２の回転が開始されるようになっている。一方、スイッチ７２は、停止スイッチであり、このスイッチ７２を業者が押し下げることで、駆動部６に信号が送出され、この信号を受信した電装部６１からの制御信号によってモータ６２の回転が停止されるようになっている。即ち、作業者は、第２保持部５や駆動部６から離れた第１保持部４の側において、撚り合わせ線製造装置１の駆動操作を実施できるようになっている。   The operation unit 7 includes two switches 71 and 72 provided on the base plate 41 of the first holding unit 4. The switch 71 is an operation switch. When the operator depresses the switch 71, a signal is sent to the drive unit 6, and the rotation of the motor 62 is started by a control signal from the electrical unit 61 that has received this signal. It has become. On the other hand, the switch 72 is a stop switch. When the trader depresses the switch 72, a signal is sent to the drive unit 6, and the rotation of the motor 62 is stopped by a control signal from the electrical unit 61 that has received this signal. It has become so. That is, the operator can drive the twisted wire manufacturing apparatus 1 on the side of the first holding unit 4 away from the second holding unit 5 and the driving unit 6.

張力付与手段８は、図３に示すように、ベース板４１上に設けられて第１保持部材４３を受け台３の長手方向にスライド自在に支持するレール８１（支持部材）と、第１保持部材４３に設けられてレール８１に案内される案内部８２と、受け台３の長手方向に沿って第２保持部５から離れる方向に第１保持部材４３を付勢するコイルばね８３（付勢手段）と、を備える。レール８１は、受け台３の長手方向に沿って形成された凹溝８４と、第１保持部材４３をベース板４１に係止するための一対の係止部８５と、を有して構成されている。一対の係止部８５は、凹溝８４の幅方向上端部から互いに近付く方向に突出して形成されているとともに、凹溝８４の長手方向の全長に設けられている。案内部８２は、軸支部４２から凹溝８４内に向かって延びこの凹溝８４内に挿通される挿通部８６と、挿通部８６よりも前記幅方向に沿う寸法が大きく形成され一対の係止部８５に係止される被係止部８７と、を有して構成されている。コイルばね８３は、一端が第１保持部４の軸支部４２に固定され、他端がベース板４１から立設された立設部８８に固定されている。このような張力付与手段８は、係止部８５に被係止部８７が係止されることにより、第１保持部材４３がベース板４１にスライド自在に支持され、コイルばね８３の復元力によって、第１保持部材４３が第２保持部５から離れる方向に移動されることにより、第一電線部２Ｂ及び第二電線部２Ｃの各々に張力を生じさせている。   As shown in FIG. 3, the tension applying means 8 includes a rail 81 (support member) that is provided on the base plate 41 and supports the first holding member 43 slidably in the longitudinal direction of the pedestal 3, and the first holding member. A guide portion 82 provided on the member 43 and guided by the rail 81, and a coil spring 83 (biasing force) that biases the first holding member 43 in a direction away from the second holding portion 5 along the longitudinal direction of the cradle 3. Means). The rail 81 includes a concave groove 84 formed along the longitudinal direction of the cradle 3 and a pair of locking portions 85 for locking the first holding member 43 to the base plate 41. ing. The pair of locking portions 85 are formed so as to protrude from the upper end in the width direction of the concave groove 84 in a direction approaching each other, and are provided on the entire length of the concave groove 84 in the longitudinal direction. The guide portion 82 extends from the shaft support portion 42 into the recessed groove 84, and is inserted into the recessed groove 84. The guide portion 82 has a dimension along the width direction larger than that of the inserted portion 86, and has a pair of latches. And a locked portion 87 that is locked to the portion 85. One end of the coil spring 83 is fixed to the shaft support part 42 of the first holding part 4, and the other end is fixed to a standing part 88 standing from the base plate 41. The tension applying means 8 is configured such that the first holding member 43 is slidably supported on the base plate 41 by the locking portion 87 being locked to the locking portion 85, and the restoring force of the coil spring 83 is used. The first holding member 43 is moved in a direction away from the second holding portion 5, thereby causing tension in each of the first electric wire portion 2 </ b> B and the second electric wire portion 2 </ b> C.

次に、図４も参照して撚り合わせ線製造装置１を用いて撚り合わせ線を製造する製造方法について説明する。まず、折返し部２Ａで折り返した電線２をテーブル３１上に延ばしてセットし、折返し部２Ａを第１保持部４の側に配置し、第一電線部２Ｂ及び第二電線部２Ｃの各端末部２Ｄ、２Ｅを第２保持部５の側に配置する。次に、一方の第２保持部材５３の把持操作レバー５８を操作して把持部５７を把持受部５６から離隔させ、この把持部５７と把持受部５６との隙間に第一電線部２Ｂの端末部２Ｄを挿入してから、把持操作レバー５８を操作して把持部５７を把持受部５６に接近させ、これらの間に端末部２Ｄを把持させる。これと同様に、一方の第２保持部材５３における把持部５７と把持受部５６との間に第２電線部２Ｃの端末部２Ｅを把持させる。   Next, the manufacturing method which manufactures a twisted wire using the twisted wire manufacturing apparatus 1 with reference also to FIG. 4 is demonstrated. First, the electric wire 2 turned back at the turn-up portion 2A is set on the table 31 by extending, and the turn-up portion 2A is arranged on the first holding portion 4 side, and each terminal portion of the first electric wire portion 2B and the second electric wire portion 2C. 2D and 2E are arranged on the second holding unit 5 side. Next, the grip operation lever 58 of one second holding member 53 is operated to separate the grip portion 57 from the grip receiving portion 56, and the first electric wire portion 2 </ b> B is inserted into the gap between the grip portion 57 and the grip receiving portion 56. After inserting the terminal portion 2D, the grip operation lever 58 is operated to bring the grip portion 57 closer to the grip receiving portion 56, and the terminal portion 2D is gripped therebetween. Similarly, the terminal portion 2E of the second electric wire portion 2C is gripped between the grip portion 57 and the grip receiving portion 56 of the one second holding member 53.

次に、第１保持部材４３の把持操作レバー４８を操作して把持部４７を把持受部４６から離隔させ、この把持部４７と把持受部４６との隙間に電線２の折返し部２Ａを挿入してから、把持操作レバー４８を操作して把持部４７を把持受部４６に接近させ、これらの間に折返し部２Ａを把持させる。この際、コイルばね８３の復元力によって、第１保持部４は第２保持部材５３から離れる方向に移動されることにより、第一電線部２Ｂ及び第二電線部２Ｃの各々に張力を生じさせている。また、第１保持部材４３が回転軸４４回りに回転しないように、回転規制部によって第１保持部材４３を回転規制状態としておく。   Next, the gripping operation lever 48 of the first holding member 43 is operated to separate the gripping portion 47 from the gripping receiving portion 46, and the folded portion 2 </ b> A of the electric wire 2 is inserted into the gap between the gripping portion 47 and the gripping receiving portion 46. Thereafter, the grip operation lever 48 is operated to bring the grip portion 47 closer to the grip receiving portion 46, and the folded portion 2A is gripped between them. At this time, the first holding portion 4 is moved away from the second holding member 53 by the restoring force of the coil spring 83, thereby generating tension in each of the first electric wire portion 2B and the second electric wire portion 2C. ing. Further, the first holding member 43 is placed in a rotation restricted state by the rotation restricting portion so that the first holding member 43 does not rotate around the rotation shaft 44.

次に、作業者によって操作部７のスイッチ７１が押し下げられると、図４（Ａ）に示すように、第１保持部材４３の回転規制状態、即ち、電線の折返し部２Ａの回転を拘束した状態であるとともに、第１保持部材４３によって折返し部２Ａが把持された状態、即ち第一電線部２Ｂ及び第二電線部２Ｃの各々に張力を生じさせた状態のままで、第２保持部５の一対の第２保持部材５３が同期して同一方向に等速度で回転し、これにより第一電線部２Ｂと第二電線部２Ｃとが同一方向に捩じられる（捩じり工程）。第一電線部２Ｂと第二電線部２Ｃとが捩じられるに伴って、第一電線部２Ｂと第二電線部２Ｃとの全長寸法が小さくなるから、コイルばね８３が伸ばされ該コイルばね８３の復元力が増加され、第一電線部２Ｂと第二電線部２Ｃとのそれぞれに生じる張力が増加する。なお、ここで、第一電線部２Ｂ及び第二電線部２Ｃが捩じられる方向は、第２保持部５から第１保持部４に向かって（他方側から一方側に向かって、又は、各端末部２Ｄ、２Ｅから折返し部２Ａに向かって）、回転方向として例えば、反時計回り（又は時計回り）の同一方向であることを意味する。即ち、１本の電線２を折り返さずに直線状に延ばした場合には、折返し部２Ａの位置を挟んで第一電線部２Ｂと第二電線部２Ｃとが逆方向に捩じられることとなる。   Next, when the switch 71 of the operation unit 7 is pushed down by the operator, as shown in FIG. 4A, the rotation restrained state of the first holding member 43, that is, the state in which the rotation of the folded portion 2A of the electric wire is restrained. In addition, the folded portion 2A is gripped by the first holding member 43, that is, the tension is generated in each of the first electric wire portion 2B and the second electric wire portion 2C. The pair of second holding members 53 are synchronously rotated at the same speed in the same direction, whereby the first electric wire portion 2B and the second electric wire portion 2C are twisted in the same direction (twisting step). As the first electric wire portion 2B and the second electric wire portion 2C are twisted, the overall length dimensions of the first electric wire portion 2B and the second electric wire portion 2C are reduced, so that the coil spring 83 is extended and the coil spring 83 is expanded. The restoring force increases, and the tension generated in each of the first electric wire portion 2B and the second electric wire portion 2C increases. Here, the direction in which the first electric wire portion 2B and the second electric wire portion 2C are twisted is from the second holding portion 5 toward the first holding portion 4 (from the other side to the one side, or each This means that the rotation direction is, for example, the same counterclockwise (or clockwise) direction from the terminal portions 2D and 2E toward the turn-back portion 2A. That is, when the single electric wire 2 is linearly extended without being folded, the first electric wire portion 2B and the second electric wire portion 2C are twisted in opposite directions across the position of the folded portion 2A. .

次に、図４（Ｂ）に示すように、一対の第２保持部材５３の回転により第一電線部２Ｂ及び第二電線部２Ｃがそれぞれ捩じられた後に、作業者によって操作部７のスイッチ７２が押し下げられると、第２保持部材５３の回転が停止し、これに続いて、第１保持部材４３を回転可能状態に切り替えて回転軸４４回りに回転させることで折返し部２Ａの回転規制を解除する。このように電線２の折返し部２Ａの回転規制を解除すると、第一電線部２Ｂ及び第二電線部２Ｃの各々に張力を生じさせた状態のままで、図４（Ｃ）に示すように、第一電線部２Ｂ及び第二電線部２Ｃの各々の捩じれを開放する方向に回転し、これにより折返し部２Ａの側から端末部２Ｄ、２Ｅの側に向かって第一電線部２Ｂと第二電線部２Ｃとが互いに撚り合わされる（撚り合わせ工程）。第一電線部２Ｂと第二電線部２Ｃとが互いに撚り合わされるに伴って、第一電線部２Ｂと第二電線部２Ｃとの全長寸法が小さくなるから、コイルばね８３が伸ばされ該コイルばね８３の復元力が増加され、第一電線部２Ｂと第二電線部２Ｃとのそれぞれに生じる張力がさらに増加する。   Next, as shown in FIG. 4B, after the first electric wire portion 2 </ b> B and the second electric wire portion 2 </ b> C are twisted by the rotation of the pair of second holding members 53, the operator switches the operation portion 7. When 72 is pushed down, the rotation of the second holding member 53 stops, and subsequently, the rotation of the folded portion 2A is restricted by switching the first holding member 43 to the rotatable state and rotating it around the rotation shaft 44. To release. When the rotation restriction of the folded portion 2A of the electric wire 2 is released in this way, as shown in FIG. 4C, the tension is generated in each of the first electric wire portion 2B and the second electric wire portion 2C. The first electric wire portion 2B and the second electric wire portion 2C rotate in a direction to release each twist, and thereby the first electric wire portion 2B and the second electric wire are directed from the folded portion 2A toward the terminal portions 2D and 2E. The parts 2C are twisted together (twisting step). As the first electric wire portion 2B and the second electric wire portion 2C are twisted together, the overall length of the first electric wire portion 2B and the second electric wire portion 2C is reduced, so that the coil spring 83 is extended and the coil spring. The restoring force of 83 is increased, and the tension generated in each of the first electric wire portion 2B and the second electric wire portion 2C is further increased.

以上のように第一電線部２Ｂと第二電線部２Ｃとを撚り合わせた後に、撚り合わせが不足していると判断した場合には、再度、第１保持部材４３によって電線２の折返し部２Ａを把持して回転規制してから、一対の第２保持部材５３を回転させて第一電線部２Ｂ及び第二電線部２Ｃを捩じり、その後に折返し部２Ａの回転規制を解除して第一電線部２Ｂと第二電線部２Ｃをさらに撚り合わせる。そして、第一電線部２Ｂと第二電線部２Ｃとが十分に撚り合わされたら、第１保持部材４３による折返し部２Ａの把持及び一対の第２保持部材５３による端末部２Ｄ、２Ｅの把持をそれぞれ解除し、撚り合わされた電線２を取り出してから、折返し部２Ａの近傍で第一電線部２Ｂ及び第二電線部２Ｃを切断することで、撚り合わせ線の製造が完了する。   As described above, after twisting the first electric wire portion 2B and the second electric wire portion 2C, when it is determined that the twisting is insufficient, the first holding member 43 again causes the folded portion 2A of the electric wire 2 to be turned back. , The pair of second holding members 53 are rotated to twist the first electric wire portion 2B and the second electric wire portion 2C, and then the rotation restriction of the turn-up portion 2A is released. The one electric wire portion 2B and the second electric wire portion 2C are further twisted together. And if the 1st electric wire part 2B and the 2nd electric wire part 2C are fully twisted together, the holding | grip of the folding | returning part 2A by the 1st holding member 43 and the holding | grip of terminal part 2D, 2E by a pair of 2nd holding member 53 will each be carried out. After releasing the twisted electric wire 2 and cutting the first electric wire portion 2B and the second electric wire portion 2C in the vicinity of the folded portion 2A, the production of the twisted wire is completed.

以上の本実施形態によれば、第１保持部材４３によって電線２の折返し部２Ａを回転規制した状態で、一対の第２保持部材５３によって電線２の端末部２Ｄ、２Ｅ側を回転させ、これにより第一電線部２Ｂ及び第二電線部２Ｃをそれぞれ捩じり、その後に第１保持部材４３による折返し部２Ａの回転規制を解除することで、第一電線部２Ｂ及び第二電線部２Ｃが各々の復元力によって捩じれを開放する方向に自然に回転して撚り合わされる。この際、各電線２においては、第一電線部２Ｂ及び第二電線部２Ｃが各々に張力を付与した状態で回転されるから、第一電線部２Ｂ及び第二電線部２Ｃ同士が互いに絡みあうことを防止することができ、各第一電線部２Ｂ及び第二電線部２Ｃはその全長に亘って均質に捩じられる。その後に、第一電線部２Ｂ及び第二電線部２Ｃが各々の捩じりを解消する方向に回転されることから、撚りピッチが均一化されるとともに、撚り合わされた後の電線２において、捩じれによる伸びや応力が残留し難くでき、撚り合わせ線の撚りが戻ることが抑制できる。また、第一電線部２Ｂ及び第二電線部２Ｃの復元力によって自然に撚り合わされているので、折返し部２Ａ側と端末部２Ｄ、２Ｅ側とを同期させて回転させる必要がなく、装置の複雑化や大型化や、駆動制御の煩雑さなどを招くことなく、簡素化かつ小型化できて比較的安価な撚り合わせ線製造装置１を提供することができる。   According to the present embodiment, the terminal portions 2D and 2E of the electric wire 2 are rotated by the pair of second holding members 53 in a state where the turn-up portion 2A of the electric wire 2 is restricted by the first holding member 43. By twisting the first electric wire portion 2B and the second electric wire portion 2C respectively and then releasing the rotation restriction of the folded portion 2A by the first holding member 43, the first electric wire portion 2B and the second electric wire portion 2C are Each of the restoring forces is naturally rotated and twisted in the direction of releasing the twist. At this time, in each electric wire 2, the first electric wire portion 2 </ b> B and the second electric wire portion 2 </ b> C are rotated in a state in which tension is applied to each, so that the first electric wire portion 2 </ b> B and the second electric wire portion 2 </ b> C are entangled with each other. This can be prevented, and the first electric wire portion 2B and the second electric wire portion 2C are twisted uniformly over the entire length thereof. After that, since the first electric wire portion 2B and the second electric wire portion 2C are rotated in a direction to eliminate each twist, the twist pitch is made uniform and the twist in the electric wire 2 after being twisted. It is possible to make it difficult for residual elongation and stress to remain, and to prevent the twisting of the twisted wires from returning. Moreover, since it is naturally twisted by the restoring force of the first electric wire portion 2B and the second electric wire portion 2C, there is no need to rotate the folded portion 2A side and the terminal portions 2D, 2E side in synchronism, and the complexity of the apparatus The twisted wire manufacturing apparatus 1 that can be simplified and reduced in size and relatively inexpensive can be provided without increasing the size, size, and complexity of drive control.

また、張力付与手段８は、第１保持部材４を一対の第２保持部材５から離れる方向に移動させることにより、各第一電線部２Ｂ及び第二電線部２Ｃに張力を付与するから、第一電線部２Ｂ及び第二電線部２Ｃの各々にかかる張力が均等化されることとなり、撚りピッチをより一層均一化できる。   The tension applying means 8 applies tension to each of the first electric wire portion 2B and the second electric wire portion 2C by moving the first holding member 4 in a direction away from the pair of second holding members 5. The tension applied to each of the one electric wire portion 2B and the second electric wire portion 2C is equalized, and the twist pitch can be made even more uniform.

なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。   In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

例えば、前記実施形態の撚り合わせ線製造装置１では、折返し部２Ａで折り返した１本の電線２の第一電線部２Ｂと第二電線部２Ｃとを撚り合わせてツイストペア線を製造する場合について説明したが、これに限らず、２本以上の電線の各一方側の端末部をまとめて第１保持部材４３で把持し、他方側の端末部を電線の本数に応じた複数の第２保持部材５３でそれぞれ把持してから、前述と同様の手順によって、２本以上の電線を互いに撚り合わせてもよい。また、折り返した２本以上の電線の折返し部２Ａをまとめて第１保持部材４３で把持し、他方側の端末部をそれぞれ複数の第２保持部材５３で把持してから、前述と同様の手順によって、これら２本以上の電線の第一電線部２Ｂと第二電線部２Ｃとを互いに撚り合わせてもよい。   For example, in the twisted wire manufacturing apparatus 1 of the embodiment described above, a case where a twisted pair wire is manufactured by twisting the first electric wire portion 2B and the second electric wire portion 2C of one electric wire 2 folded at the folded portion 2A will be described. However, the present invention is not limited to this, and terminal portions on one side of two or more electric wires are collectively held by the first holding member 43, and a plurality of second holding members corresponding to the number of electric wires are held on the other end portion. After each gripping at 53, two or more wires may be twisted together by the same procedure as described above. Further, the folded portions 2A of the two or more electric wires that have been folded are collectively held by the first holding member 43, and the terminal portions on the other side are each held by the plurality of second holding members 53. The first electric wire portion 2B and the second electric wire portion 2C of these two or more electric wires may be twisted together.

１ 撚り合わせ線製造装置
２ 電線
２Ａ 折返し部（一方側の端末部）
２Ｂ 第一電線部
２Ｃ 第二電線部
２Ｄ、２Ｅ 端末部（他方側の端末部）
６ 駆動部
４３ 第１保持部材（保持部材）
５３ 第２保持部材（回転保持部材） DESCRIPTION OF SYMBOLS 1 Twisted wire manufacturing apparatus 2 Electric wire 2A Folding part (terminal part of one side)
2B 1st electric wire part 2C 2nd electric wire part 2D, 2E A terminal part (terminal part of the other side)
6 drive part 43 1st holding member (holding member)
53 Second holding member (rotating holding member)

Claims (3)

複数の電線を撚り合わせて撚り合わせ線を製造するための撚り合わせ線製造装置であって、
前記複数の電線の一方側の端末部をまとめて把持する一方側の保持部材と、
前記複数の電線の他方側の端末部を各々把持するとともに各電線をそれぞれの軸芯を中心に回転させる複数の回転保持部材と、
前記複数の回転保持部材を回転駆動させる駆動部と、
前記複数の電線の各々に張力を付与する張力付与手段と、を備え、
前記張力付与手段によって前記複数の電線の各々に張力が付与された状態において、前記一方側の保持部材によって前記電線の一方側の端末部を把持して回転を規制し、前記回転保持部材によって前記複数の電線をそれぞれ所定回転数だけ回転させて捩ってから、前記一方側の保持部材による前記一方側の端末部の回転規制を解除することで、前記複数の電線を互いに撚り合わせることを特徴とする撚り合わせ線製造装置。 A twisted wire manufacturing apparatus for manufacturing a twisted wire by twisting a plurality of electric wires,
A holding member on one side that collectively holds the terminal portions on one side of the plurality of electric wires;
A plurality of rotation holding members that respectively grip the terminal portions on the other side of the plurality of electric wires and rotate each electric wire around its respective axis,
A drive unit that rotationally drives the plurality of rotation holding members;
Tension applying means for applying tension to each of the plurality of electric wires,
In a state in which tension is applied to each of the plurality of electric wires by the tension applying means, the one end of the electric wire is gripped by the holding member on the one side to restrict rotation, and the rotation holding member Each of the plurality of electric wires is twisted by rotating each of the plurality of electric wires by a predetermined number of rotations, and then the rotation restriction of the terminal portion on the one side by the holding member on the one side is released, thereby twisting the plurality of electric wires together. A twisted wire manufacturing device. 前記張力付与手段は、前記一方側の保持部材をスライド自在に支持する支持部材と、
前記一方側の保持部材を前記複数の回転保持部材から離れる方向に付勢する付勢手段と、を備え、
前記付勢手段の復元力によって、前記一方側の保持部材が前記複数の回転保持部材から離れる方向に移動されることにより、前記複数の電線の各々に張力が付与されることを特徴とする請求項１記載の撚り合わせ線製造装置。 The tension applying means includes a support member that slidably supports the holding member on the one side,
Biasing means for biasing the holding member on the one side in a direction away from the plurality of rotation holding members;
The tension is applied to each of the plurality of electric wires by moving the holding member on the one side away from the plurality of rotation holding members by the restoring force of the urging means. Item 2. A twisted wire manufacturing apparatus according to item 1. 複数の電線を撚り合わせて撚り合わせ線を製造するための撚り合わせ線製造方法であって、
前記撚り合わせ線における前記複数の電線のうちの一組は、連続する１本の電線を折返し部で折り返した一方の第一電線部と他方の第二電線部とで構成されるものであり、
前記一方の第一電線部及び前記他方の第二電線部に張力が付与された状態において、前記折返し部を把持して回転を規制し、前記第一電線部の端末側及び前記第二電線部の端末側をそれぞれ所定回転数だけ回転させて捩じる捩じり工程と、
前記捩じり工程の後に、前記折返し部の回転規制を解除して前記第一電線部と前記第二電線部とを互いに撚り合わせる撚り合わせ工程と、を備えたことを特徴とする撚り合わせ線製造方法。 A twisted wire manufacturing method for manufacturing a twisted wire by twisting a plurality of electric wires,
One set of the plurality of electric wires in the twisted wire is composed of one first electric wire portion and the other second electric wire portion obtained by folding one continuous electric wire at the folded portion,
In a state in which tension is applied to the one first electric wire portion and the other second electric wire portion, the folding portion is gripped to restrict rotation, and the terminal side of the first electric wire portion and the second electric wire portion A twisting process in which the terminal side of each is rotated by a predetermined number of revolutions and twisted;
After the twisting step, a twisting step comprising: a twisting step of releasing the rotation restriction of the folded portion and twisting the first electric wire portion and the second electric wire portion together. Production method.
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