JP4947844B2 - Shielded insulated wire manufacturing equipment - Google Patents

Shielded insulated wire manufacturing equipment Download PDF

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Publication number
JP4947844B2
JP4947844B2 JP2001079612A JP2001079612A JP4947844B2 JP 4947844 B2 JP4947844 B2 JP 4947844B2 JP 2001079612 A JP2001079612 A JP 2001079612A JP 2001079612 A JP2001079612 A JP 2001079612A JP 4947844 B2 JP4947844 B2 JP 4947844B2
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JP
Japan
Prior art keywords
nipple
cylindrical
pipe
insulated wire
shielded insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001079612A
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Japanese (ja)
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JP2002279840A (en
Inventor
正司 樋口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
Original Assignee
THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by THE FURUKAW ELECTRIC CO., LTD., Furukawa Automotive Systems Inc filed Critical THE FURUKAW ELECTRIC CO., LTD.
Priority to JP2001079612A priority Critical patent/JP4947844B2/en
Publication of JP2002279840A publication Critical patent/JP2002279840A/en
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Publication of JP4947844B2 publication Critical patent/JP4947844B2/en
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  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Of Electric Cables (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車用ワイヤーハーネスなどに用いられるシールド付き絶縁電線製造装置に関する。
【０００２】
【従来の技術】
自動車用ワイヤーハーネスなどに用いられるシールド付き絶縁電線は、例えば、コア撚線の外周上に金属箔テープを縦添えしてシールドが形成され、その外周上に絶縁体を押出して絶縁層が形成された構造になっている。
従来、上述のシールド付き絶縁電線は、例えば図２に示すような製造装置で製造されていた。即ち、コア撚線４がガイドローラー６で、また、金属箔テープ３がガイドローラー７でそれぞれ（図２では右側から）供給される。金属箔テープ３は、コア撚線４の外周上に縦添えされるようにガイドローラー８、９でガイドされて、テープの縦添え円筒成形用パイプ１に上流側端部１ａから入る。そして、金属箔テープ３は円筒成形用パイプ１中で両側端が数ｍｍ程度重ね合わせられて、円筒状に仮成形され、コア撚線４を包んでシールドを形成し、その後、円筒成形用パイプ１の下流側端部１ｂから出て、成形用ダイス２で最終的に成形される。
【０００３】
金属箔テープ３で包まれたコア撚線４は、成形用ダイス２を出た後、押出ヘッド１１のニップル１２に入り、ニップル１２と押出ダイス１３の間から押し出された絶縁体１４で形成された絶縁層で被覆され、シールド付き絶縁電線５が形成される。
【０００４】
【発明が解決しようとする課題】
しかしながら、上述のシールド付き絶縁電線製造装置には以下のような問題があった。即ち、
１）成形用ダイス２とニップル１２が離間しているため、成形用ダイス２を出てからニップル１２に入るまでの間に、コア撚線４を包むように成形された金属箔テープ３の両側端がコア撚線４から浮き上がることがある。
２）この浮き上がりを防止するために、成形用ダイス２で金属箔テープ３を強く成形すると、成形用ダイス２から出てくる金属箔テープ３に皺がよる。
【０００５】
【課題を解決するための手段】
本発明は上記問題点を解決したシールド付き絶縁電線製造装置を提供するもので、テープの両側端部を重ね合わせて円筒状に成形し、コア線の外周上にシールドを形成するテープの縦添え円筒成形用パイプと、押出ダイスとニップルからなり、シールドの外周上に絶縁層を形成する押出ヘッドを備えたシールド付き絶縁電線製造装置において、前記円筒成形用パイプは、前記ニップルの上流側直前に非固定状態に配置され、この円筒成形用パイプのニップル側先端部は前記ニップルの上流側部の内面形状に対応した外形状を有し、前記円筒成形用パイプのニップル側先端部の外面が前記ニップルの上流側部の内面に当接して嵌合可能であることを特徴とするものである。
【０００６】
上述のように、テープの縦添え円筒成形用パイプをニップルの上流側（コア線の入口側）直前に非固定状態に配置すると、コア線が円筒状に成形されたテープに包まれた状態で円筒成形用パイプを通り、ニップル方向に引っ張られる際に、円筒成形用パイプもニップル方向に引っ張られる。そうすると、円筒成形用パイプのニップル側の先端部がニップルの上流側に嵌合可能な外形状をしているため、円筒成形用パイプの先端はニップル内に入り込み、安定した状態になる。
【０００７】
この状態で、シールド付き絶縁電線を製造すると、円筒成形用パイプ内で円筒状に成形されたテープに包まれたコア線は、円筒成形用パイプを通過して直ぐにニップルに入るため、テープの両側端がコア線から浮き上がることがなく、また、テープに皺がよることがなく、ニップルに引き込まれ、絶縁被覆が形成される。
【０００８】
【発明の実施の形態】
以下、図面に基づいて本発明の実施の形態を詳細に説明する。
図１は、本発明にかかるシールド付き絶縁電線製造装置の部分断面説明図である。なお、図１は、図２に関して説明した部分と同部分は同符号で指示してある。
本実施形態のシールド付き絶縁電線製造装置は、テープの縦添え円筒成形用パイプ２１と、ニップル１２と押出ダイス１３からなる押出ヘッド１１とから構成されている。
【０００９】
本実施形態が従来例と異なる特徴的なことは、テープの縦添え円筒成形用パイプ２１のニップル１２側の先端部２１ａがニップル１２の内側に嵌合可能な外形状をしていることである。即ち、ニップル１２の上流側部１２ａ（コア撚線４が入り込む側）の内側形状は、円錐状になっており、円筒成形用パイプ２１のニップル１２側の先端部２１ａ（コア撚線４が出る側）の外形状は、ニップル１２の上流側部１２ａの内形状に略等しい円錐状になっている。
また、円筒成形用パイプ２１は、どこにも固定されていない状態でコア撚線を挿通している。
【００１０】
本実施形態のシールド付き絶縁電線製造装置を用いて、シールド付き絶縁電線５は以下のようにして製造される。即ち、
１）先ず、コア撚線４に金属箔テープ３を縦添えし、円筒成形用パイプ２１に引き込み、その後、ニップル１２に挿通する。
２）次いで、コア撚線４と金属箔テープ３を繰り出しながら、押出ヘッド１１から絶縁被覆されたシールド付き絶縁電線５を引き出す。この際に、円筒成形用パイプ２１は固定されていないので、コア撚線４とともに押出ヘッド１１のニップル１２の方向（図１においては左方向）に引っ張られ、先端部２１ａはニップル１２の上流側部１２ａ内に引き込まれる。そして、円筒成形用パイプ２１の先端部２１ａは外面がニップル１２の上流側部１２ａの内面に当接して嵌合し、安定した状態になり、以後連続してシールド付き絶縁電線が製造される。
【００１１】
上述のように、本実施形態のシールド付き絶縁電線製造装置を用いてシールド付き絶縁電線５を製造すると、円筒成形用パイプ２１の先端部２１ａがニップル１２の上流側部１２ａ内に入り込んでいる。そのため、円筒成形用パイプ２１から引き出され、コア撚線４が金属箔テープ３で包まれたシールド付き電線は、金属箔テープ３の両側端がコア撚線４から浮き上がることなく、ニップル１２の上流側部１２ａ内に引き込まれるので、コア撚線４を包む金属箔テープ３には皺が生じることがない。
また、このように円筒成形用パイプ２１を直接ニップル１２と嵌合可能とすることにより、成形用ダイスを省略することができ、装置全体が簡素化される。
【００１２】
なお、上記実施形態は本発明を具体化した一例であって、本願発明の技術的範囲を限定するものではない。例えば、円筒成形用パイプ２１の先端部２１ａの外形状とニップル１２の上流側部１２ａの内形状は、必ずしも円錐状である必要はない。
【００１３】
【発明の効果】
以上説明したように本発明によれば、テープを縦添えして円筒状に形成したシールドに皺を生じることなく、絶縁被覆層を形成することができるという優れた効果がある。
【図面の簡単な説明】
【図１】本発明に係るシールド付き絶縁電線製造装置の部分断面説明図である。
【図２】従来のシールド付き絶縁電線製造装置の部分断面説明図である。
【符号の説明】
１、２１ 円筒成形用パイプ
１ａ 上流側端部
１ｂ 下流側端部
２ 成形用ダイス
３ 金属箔テープ
４ コア撚線
５ シールド付き絶縁電線
６、７、８、９ガイドローラー
１１ 押出ヘッド
１２ ニップル
１２ａ 上流側部
１３ 押出ダイス
１４ 絶縁体
２１ａ 先端部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shielded insulated wire manufacturing apparatus used for automobile wire harnesses and the like.
[0002]
[Prior art]
For example, shielded insulated wires used for automobile wire harnesses are formed by vertically attaching a metal foil tape on the outer periphery of a core stranded wire, and an insulator is extruded on the outer periphery to form an insulating layer. It has a structure.
Conventionally, the above shielded insulated electric wire has been manufactured with a manufacturing apparatus as shown in FIG. That is, the core stranded wire 4 is supplied by the guide roller 6 and the metal foil tape 3 is supplied by the guide roller 7 (from the right side in FIG. 2). The metal foil tape 3 is guided by guide rollers 8 and 9 so as to be vertically attached on the outer periphery of the core stranded wire 4 and enters the vertically attached cylindrical forming pipe 1 of the tape from the upstream end 1a. Then, the metal foil tape 3 is overlapped in the cylindrical forming pipe 1 at both ends thereof by several mm, is temporarily formed into a cylindrical shape, encloses the core stranded wire 4 to form a shield, and then the cylindrical forming pipe. 1 is exited from the downstream end 1b and finally molded with the molding die 2.
[0003]
The core stranded wire 4 wrapped with the metal foil tape 3 is formed of an insulator 14 that has exited the forming die 2 and then enters the nipple 12 of the extrusion head 11 and is extruded from between the nipple 12 and the extrusion die 13. The shielded insulated wire 5 is formed by covering with the insulating layer.
[0004]
[Problems to be solved by the invention]
However, the above shielded insulated wire manufacturing apparatus has the following problems. That is,
1) Since the forming die 2 and the nipple 12 are separated from each other, both ends of the metal foil tape 3 formed so as to wrap the core stranded wire 4 after leaving the forming die 2 and entering the nipple 12 May float from the core stranded wire 4.
2) If the metal foil tape 3 is strongly formed with the forming die 2 in order to prevent the lifting, wrinkles are generated on the metal foil tape 3 coming out of the forming die 2.
[0005]
[Means for Solving the Problems]
The present invention provides a shielded insulated wire manufacturing apparatus that solves the above-described problems. The tape is vertically attached to form a shield on the outer periphery of the core wire by forming both ends of the tape into a cylindrical shape by overlapping them. In a shielded insulated wire manufacturing apparatus comprising a cylindrical forming pipe, an extrusion die and a nipple, and having an extrusion head for forming an insulating layer on the outer periphery of the shield, the cylindrical molding pipe is located immediately before the upstream side of the nipple. disposed in a non-fixed state, the nipple side end portion of the cylindrical molded pipe has an outer shape corresponding to the inner shape of the upstream portion of the nipple, the outer surface of the nipple end tip of the cylindrical molded pipe is the It is characterized in that it can be fitted in contact with the inner surface of the upstream side portion of the nipple .
[0006]
As described above, when the pipe for forming a cylindrical cylinder with a vertical tape is placed in an unfixed state immediately before the upstream side of the nipple (the inlet side of the core wire), the core wire is wrapped in a cylindrical tape. When passing through the cylindrical molding pipe and being pulled in the nipple direction, the cylindrical molding pipe is also pulled in the nipple direction. Then, since the tip on the nipple side of the cylindrical molding pipe has an outer shape that can be fitted on the upstream side of the nipple, the tip of the cylindrical molding pipe enters the nipple and is in a stable state.
[0007]
In this state, when the shielded insulated wire is manufactured, the core wire wrapped in the cylindrically formed tape in the cylindrical molding pipe enters the nipple immediately after passing through the cylindrical molding pipe. The end is not lifted off the core wire, and the tape is not wrinkled, and is drawn into the nipple to form an insulating coating.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partial cross-sectional explanatory view of a shielded insulated wire manufacturing apparatus according to the present invention. In FIG. 1, the same parts as those described with reference to FIG.
The shielded insulated wire manufacturing apparatus of the present embodiment is composed of a tape-attached cylindrical molding pipe 21 and an extrusion head 11 composed of a nipple 12 and an extrusion die 13.
[0009]
The feature of this embodiment that is different from the conventional example is that the tip portion 21a on the side of the nipple 12 of the pipe 21 for forming a cylinder with a tape attached vertically has an outer shape that can be fitted inside the nipple 12. . That is, the inner shape of the upstream side portion 12a (the side where the core stranded wire 4 enters) of the nipple 12 is conical, and the tip portion 21a (the core stranded wire 4 exits) on the nipple 12 side of the cylindrical molding pipe 21. The outer shape of the side) is a conical shape substantially equal to the inner shape of the upstream side portion 12a of the nipple 12.
Moreover, the cylindrical forming pipe 21 is inserted through the core stranded wire in a state where it is not fixed anywhere.
[0010]
Using the shielded insulated wire manufacturing apparatus of the present embodiment, the shielded insulated wire 5 is manufactured as follows. That is,
1) First, the metal foil tape 3 is vertically attached to the core twisted wire 4, drawn into the cylindrical forming pipe 21, and then inserted into the nipple 12.
2) Next, the insulated insulated wire 5 with insulation coating is pulled out from the extrusion head 11 while the core stranded wire 4 and the metal foil tape 3 are fed out. At this time, since the cylindrical molding pipe 21 is not fixed, it is pulled together with the core twisted wire 4 in the direction of the nipple 12 of the extrusion head 11 (leftward in FIG. 1), and the tip 21a is upstream of the nipple 12. It is drawn into the part 12a. Then, the outer end surface 21a of the cylindrical molding pipe 21 comes into contact with and fits with the inner surface of the upstream side portion 12a of the nipple 12 to be in a stable state, and thereafter a shielded insulated wire is continuously manufactured.
[0011]
As described above, when the shielded insulated wire 5 is manufactured using the shielded insulated wire manufacturing apparatus of the present embodiment, the tip portion 21 a of the cylindrical molding pipe 21 enters the upstream side portion 12 a of the nipple 12. Therefore, the shielded electric wire drawn out from the cylindrical molding pipe 21 and having the core twisted wire 4 wrapped with the metal foil tape 3 does not float on both ends of the metal foil tape 3 from the core twisted wire 4, and is upstream of the nipple 12. Since it is drawn into the side part 12a, wrinkles do not occur in the metal foil tape 3 wrapping the core stranded wire 4.
Further, by allowing the cylindrical molding pipe 21 to be directly fitted to the nipple 12, the molding die can be omitted, and the entire apparatus is simplified.
[0012]
In addition, the said embodiment is an example which actualized this invention, Comprising: The technical scope of this invention is not limited. For example, the outer shape of the distal end portion 21a of the cylindrical molding pipe 21 and the inner shape of the upstream side portion 12a of the nipple 12 are not necessarily conical.
[0013]
【Effect of the invention】
As described above, according to the present invention, there is an excellent effect that an insulating coating layer can be formed without generating wrinkles on a shield formed in a cylindrical shape by vertically attaching a tape.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional explanatory view of a shielded insulated wire manufacturing apparatus according to the present invention.
FIG. 2 is a partial cross-sectional explanatory view of a conventional shielded insulated wire manufacturing apparatus.
[Explanation of symbols]
1, 21 Cylindrical molding pipe 1a Upstream end 1b Downstream end 2 Molding die 3 Metal foil tape 4 Core strand 5 Shielded insulated wires 6, 7, 8, 9 Guide roller 11 Extrusion head 12 Nipple 12a Upstream Side 13 Extrusion Die 14 Insulator 21a Tip

Claims (1)

テープの両側端部を重ね合わせて円筒状に成形し、コア線の外周上にシールドを形成するテープの縦添え円筒成形用パイプと、押出ダイスとニップルからなり、シールドの外周上に絶縁層を形成する押出ヘッドを備えたシールド付き絶縁電線製造装置において、前記円筒成形用パイプは、前記ニップルの上流側直前に非固定状態に配置され、この円筒成形用パイプのニップル側先端部は前記ニップルの上流側部の内面形状に対応した外形状を有し、前記円筒成形用パイプのニップル側先端部の外面が前記ニップルの上流側部の内面に当接して嵌合可能であることを特徴とするシールド付き絶縁電線製造装置。Formed in a cylindrical shape by superimposing both ends of the tape, and made of a cylindrical pipe with tape attached to form a shield on the outer periphery of the core wire, an extrusion die, and a nipple. An insulating layer is formed on the outer periphery of the shield. in shielded insulated wire manufacturing apparatus provided with an extrusion head for forming the cylindrical molded pipe is disposed in the non-fixed state on the upstream side just before the nipple, the nipple side end portion of the cylindrical molding pipe of the nipple It has an outer shape corresponding to the inner surface shape of the upstream side portion, and the outer surface of the tip portion on the nipple side of the cylindrical molding pipe is in contact with and can be fitted to the inner surface of the upstream side portion of the nipple. Shielded insulated wire manufacturing equipment.
JP2001079612A 2001-03-21 2001-03-21 Shielded insulated wire manufacturing equipment Expired - Fee Related JP4947844B2 (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021120441A1 (en) * 2019-12-18 2021-06-24 安徽森泰木塑集团股份有限公司 Mold for preparing composite profile

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US20080193755A1 (en) * 2007-02-09 2008-08-14 Olivier Guise Extrusion die, methods of coating a wire core, and a coated wire by the extrusion die and methods
JP5330010B2 (en) * 2008-03-18 2013-10-30 矢崎総業株式会社 Harness assembly apparatus and harness assembly method
CN103348418B (en) 2011-02-10 2016-05-18 株式会社自动网络技术研究所 Wire harness, wire harness manufacture method and wire harness manufacturing equipment
CN106504833B (en) * 2016-12-26 2018-08-10 常熟市景弘盛通信科技股份有限公司 The aluminium foil cladding process of high-frequency high speed cable and its corresponding production structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021120441A1 (en) * 2019-12-18 2021-06-24 安徽森泰木塑集团股份有限公司 Mold for preparing composite profile

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