JPS6047690B2 - Method for manufacturing spiral wire support - Google Patents

Description

【発明の詳細な説明】 本発明は絶縁電線を支持するための螺旋状電線支持具の
製造方法を提供するものであつて、たとえば特公昭４９
−４９４７３に例示される電線端末の引留具、たとえは
実公昭５０−３０６２２に例示される電線中間支持具、
たとえば実公昭４９−４７１７に例示されるラインスペ
ーサー、たとえば実公昭５２一２８１５９に例示される
溶断落下防止装置その他ラツシングロツド等を含む各種
の電線支持具について実施てきるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing a spiral electric wire support for supporting insulated electric wires.
-49473, a wire terminal retainer, for example, a wire intermediate support as shown in Japanese Utility Model Publication No. 50-30622,
For example, the present invention can be applied to various electric wire supports including a line spacer as exemplified in Japanese Utility Model Publication No. 49-4717, a fusing fall prevention device as exemplified in Japanese Utility Model Publication No. 52-28159, and lashing rods.

本件出願人は先に金属線心を高分子材料て絶縁被覆して
なる被覆電線支持具について数件の特許ならひに実用新
案出願をなした（特願昭５３−１２４３９９、実願昭５
３−１３４９１１等）。The applicant had previously filed several patent and utility model applications for coated wire supports made of metal wire cores insulated with polymeric material (Japanese Patent Application No. 124399-1983, Utility Model Application No.
3-134911 etc.).

これら先願の螺旋状電線支持具は金属線心を長１−↓Ｌ
・瞥 讐、 ゛ − 」Ｌ−１−ゝ一 曾 一 − ゾ
バ、 ′、＝に；、、ヤｒＬゝ −ーー｛１−、っ薯
−東１ レ れｆ一る絶縁被覆を施すとともに長螺旋内
面には被覆の成形と同時に長螺旋に沿つて突条を設ける
か、又は被覆成形直後に該被覆に硬質粉粒を植設してな
り、該電線支持具を電線に巻装したときには前記被覆の
電線に対するソフトタッチによつて電線被覆を損傷する
おそれがなく、また前記突条もしくは粉粒によつて強固
に電線を支持するようになつている。ところが、前記突
条は被覆成形用ダイとの関係上、長螺旋に沿つて突設さ
れるものであるから、電線が長螺旋方向に捩れ回転する
場合は摩擦係合力が発生し難い欠点があり、また硬質粉
粒の場合は施工中、該粉粒が電線又は他物と擦れ合つて
脱落する欠点があつた。The spiral wire supports of these earlier applications have a metal wire core with a length of 1-↓L.
・In addition to applying an insulating coating to ゛ - ``L-1-ゝ1-1-Zo-ba, ,,,,,YarLゝ--{1-, 薯-東1 LE f1, On the inner surface of the long spiral, protrusions are provided along the long spiral at the same time as the coating is formed, or hard powder particles are planted in the coating immediately after the coating is formed, and when the wire support is wound around the electric wire, There is no risk of damaging the wire sheathing due to the soft touch of the sheath to the wire, and the wire is firmly supported by the protrusions or powder grains. However, because the protrusions are provided along the long spiral due to the relationship with the covering molding die, there is a drawback that it is difficult to generate frictional engagement force when the electric wire twists and rotates in the long spiral direction. Moreover, in the case of hard powder particles, there was a drawback that the powder particles rubbed against electric wires or other objects and fell off during construction.

本発明は上記先願支持具の摩擦係合力増大用突条もしく
は硬質粉粒に代えて、被覆自身を加圧変形させて形成さ
れる凹凸をその長螺旋内面に多数個設け、以て電線被覆
を損傷しない、かつまた電線支持力の大きい螺旋状電線
支持具を安価に得よ１うとするものであつて、すなわち
本発明は高分子材料被覆金属線によつて構成され、かつ
長手方向に電線に巻装しうる複数の長螺旋を速成してな
る螺旋状電線支持具の製造方法において、（イ）金属線
心に熱可塑性高分子材料を被覆して被覆線を得る・工程
と、（口）上記被覆線の被覆に加圧変形手段を施して被
覆の少くとも一面に多数の凹凸を設ける工程と、ヤ→前
記（イ）工程の前又は後に金属線心又は被覆線を長螺旋
形に成形する工程とからなる螺旋状電線支持具の製造方
法に係る。The present invention provides a long spiral inner surface with a large number of unevenness formed by deforming the coating itself under pressure, instead of the protrusions or hard powder grains for increasing the frictional engagement force of the support of the prior application, thereby covering the electric wire. An object of the present invention is to obtain at a low cost a helical wire support that does not damage the wire and has a large wire supporting capacity. A method for manufacturing a helical wire support by quickly forming a plurality of long helices that can be wrapped around a metal wire core, which includes the steps of (a) coating a metal wire core with a thermoplastic polymer material to obtain a coated wire; ) A step of applying pressure deformation means to the covering of the covered wire to form a large number of irregularities on at least one surface of the covering; The present invention relates to a method of manufacturing a spiral electric wire support, which comprises a step of molding.

フ 以下実施例図にしたがつて本発明を具体的に説明す
る。The present invention will be explained in detail below with reference to embodiment figures.

第１図は長螺旋成形工程〔（ハ）工程〕が被覆線成形工
程および凹凸形成工程〔（イ）および（口）工程〕の前
になされる場合の本発明の実施例図である。FIG. 1 is an embodiment of the present invention in which the long spiral forming process [step (c)] is performed before the covered wire forming process and the unevenness forming process [steps (a) and (c)].

同図において、１は金属線心送給装置であつてドラムＤ
に巻積された強靭な金属線心２を案内ローラーＲ１、矯
正ローラーＲ２、送りローラーＲ３等により前方（図に
おいて右方向）へ送給するようになつている。金属線心
２は本件出願人が特願昭５４−１６９４７で述べた節付
鋼線であるのが望ましい。この金属線心送給装置１の前
方に該送給装置１と近接して長螺旋穴３１を設けたダイ
３が設置される。In the figure, 1 is a metal wire core feeding device and a drum D.
The strong metal wire core 2 wound in a pile is fed forward (rightward in the figure) by a guide roller R1, a straightening roller R2, a feed roller R3, etc. The metal wire core 2 is preferably a knotted steel wire as described in Japanese Patent Application No. 54-16947 by the present applicant. A die 3 having a long spiral hole 31 is installed in front of the metal wire core feeding device 1 and adjacent to the feeding device 1.

３２はガイドバイブであつて送給される金属線心２を確
実に長螺旋穴３１に導入させるためのものである。Reference numeral 32 denotes a guide vibe for ensuring that the metal wire core 2 to be fed is introduced into the long spiral hole 31.

なお、上記構成は本件出願人が先に開示した特公昭４０
−６９７５記載の装置と同一である。Note that the above configuration is based on the Japanese Patent Publication No. 1973, which was previously disclosed by the applicant.
It is the same as the device described in -6975.

また、実施例図においては１本の金属線心２を長螺旋形
に成形する装置が示されているが、複数本の金属線心を
同時に長螺旋形に成形して併行な長螺旋群を形成する。
（本件出願人がなした特願昭５３−１１８１２７号）場
合もある。いま、金属線心送給装置１の送りローラーＲ
３を図外の駆動装置によつて一定方向へ回転せしめると
、金属線心２は前方すなわちガイドバイブ３２方向へ送
給されるとともに該ガイドバイブ３２を通つてダイ３の
長螺旋穴３１に強制押送され、ここで長螺旋形に成形さ
れ長螺旋状金属線心４となつてタイ３より排出される。In addition, although the embodiment diagram shows an apparatus for forming one metal wire core 2 into a long spiral shape, a plurality of metal wire cores can be simultaneously formed into a long spiral shape to form a group of parallel long spirals. Form.
(Japanese Patent Application No. 53-118127 filed by the applicant). Now, the feed roller R of the metal wire core feeding device 1
3 is rotated in a certain direction by a drive device (not shown), the metal wire core 2 is fed forward, that is, in the direction of the guide vibe 32, and forced into the long spiral hole 31 of the die 3 through the guide vibe 32. The metal wire core 4 is pushed there, is formed into a long helical shape, becomes a long helical metal wire core 4, and is discharged from the tie 3.

次に長螺旋状金属線心４は押出成形機のクロスヘッドに
導入され、かつ高分子材料で被覆されて長螺旋状被覆線
５となる〔（イ）工程〕。Next, the long helical metal wire core 4 is introduced into the crosshead of an extrusion molding machine and coated with a polymeric material to become a long helical coated wire 5 [step (a)].

押出成形機としては電線被覆等に用いられる公知の押出
成形機６が用いられ、該押出成形機６の！クロスヘッド
６１が前記ダイ３の出口側に配置される。As the extrusion molding machine, a known extrusion molding machine 6 used for coating electric wires, etc. is used. A crosshead 61 is arranged on the exit side of the die 3.

したがつて、順次ダイ３より排出された長螺旋状金属線
心４はクロスヘッド６１を通過するとき、その全表面に
ポリエチレン、塩化ビニル、合成ゴム等の高分子材料よ
りなる被覆５１が設けクられる。被覆５１は電線電圧に
耐えうる絶縁耐力を有する厚みに形成されるのが望まし
く、通常、ｌ乃至５Ｔｍｍ厚が適当である。また、該被
覆５１は電線被覆と同等か、もしくはそれ以上の耐熱性
を有する材料で以て構成されるのが望ましい。Therefore, when the long helical metal wire core 4 sequentially discharged from the die 3 passes through the crosshead 61, a coating 51 made of a polymeric material such as polyethylene, vinyl chloride, or synthetic rubber is provided on the entire surface of the core. It will be done. The coating 51 is desirably formed to have a thickness that has a dielectric strength that can withstand the wire voltage, and a thickness of 1 to 5 Tmm is usually appropriate. Further, it is desirable that the sheathing 51 be made of a material having heat resistance equal to or higher than that of the electric wire sheathing.

次に、長螺旋状被覆線５は水冷槽７によつて適温に冷却
され、かつ長螺旋内面への凹凸形成工程〔（口）工程〕
に送給される。Next, the long spiral coated wire 5 is cooled to an appropriate temperature in a water cooling tank 7, and a step of forming irregularities on the inner surface of the long spiral [(opening) step]
will be sent to

凹凸形成工程は同図ては一対のローラー８，９によつて
長螺旋状被覆線５を押圧する手段が示されている。In the unevenness forming step, means for pressing the long spiral coated wire 5 with a pair of rollers 8 and 9 is shown in the figure.

一方のローラー８には周面に多数の凹凸８１，８１・・
・が設けられ、該ローラー８は前記フ周面が長螺旋状被
覆線５の長螺旋内面と当接する位置に設置される。他方
のローラー９は前記ローラー８と対向して設置されてお
り、したがつて適温（押圧変形可能の温度）に冷却され
た長螺旋状被覆線５が該ローラー８，９間を通過すると
、被７覆５１のローラー８との当接面（すなわち螺旋内
面）は該ローラー８の凹凸８１，８１・・・によつて変
形され、そこに多数の凹凸１０，１０・・・が形成され
る。本発明は以上のようにして被覆５１に多数の凹ノ凸
を設けるのを特徴としている。このようにして成形され
た凹凸付長螺旋状被覆線５２は所定の寸法に切断され、
かつ必要に応じて中間部に折曲加工か施きされて螺旋状
電線支持具Ａ（第３図）となる。One roller 8 has many irregularities 81, 81 on the circumferential surface.
* is provided, and the roller 8 is installed at a position where the circumferential surface of the roller 8 comes into contact with the long spiral inner surface of the long spiral coated wire 5. The other roller 9 is installed facing the roller 8, so that when the long spiral coated wire 5 cooled to an appropriate temperature (temperature that allows pressure deformation) passes between the rollers 8 and 9, the coated wire 5 is The contact surface (that is, the spiral inner surface) of the seventh cover 51 with the roller 8 is deformed by the unevenness 81, 81... of the roller 8, and a large number of unevenness 10, 10... are formed there. The present invention is characterized in that the coating 51 is provided with a large number of projections and depressions as described above. The long spiral coated wire 52 with projections and depressions thus formed is cut into predetermined dimensions.
Then, if necessary, the intermediate portion is bent to form the spiral wire support A (FIG. 3).

なお、凹凸１０，１０・・・形成後の被覆５１の温度が
高い場合はローラー８に後続して第２の冷却装置（不図
示）を設けるとよい。以上は長螺旋の成形工程〔（ハ）
工程〕が最初になされる場合について述べたのであるが
、次に長螺旋成形工程が被覆線成形工程および凹凸形成
工程〔（イ）および（口）工程〕の後になされる場合に
ついて説明する。Note that if the temperature of the coating 51 after the formation of the unevenness 10, 10 is high, a second cooling device (not shown) may be provided following the roller 8. The above is the long spiral forming process [(c)
The case in which the long spiral forming step is performed first will be described, but the case in which the long spiral forming step is performed after the coated wire forming step and the unevenness forming step [steps (a) and (c)] will now be described.

第４図において、巻積ドラムＤより引出された金属線心
２はただちに押出成形機６のクロスヘッド６１によつて
その表面に高分子材料よりなる被覆５１が設けられ、か
つ水冷槽７によつて冷却されて直線状被覆線１１となる
。In FIG. 4, the metal wire core 2 pulled out from the winding drum D is immediately coated with a coating 51 made of a polymeric material on its surface by the crosshead 61 of the extruder 6, and then put in a water cooling tank 7. Then, it is cooled and becomes a straight coated wire 11.

１２，１２は一対のキヤタピラーてあつて被覆線１１を
挾んて引取る。A pair of caterpillars 12, 12 sandwich the covered wire 11 and take it off.

キヤタピラー１２，１２の一方（又は両方）には被覆線
１１と接する面に多数の凹凸が設けられており、該キヤ
タピラー１２，１２によつて引取られた被覆線１１は少
くとも一方の面に多数の凹凸が設けられ、これにより該
被覆線１１は凹凸付被覆線１１１となる。One (or both) of the caterpillars 12, 12 is provided with a large number of irregularities on the surface in contact with the covered wire 11, and the covered wire 11 drawn by the caterpillars 12, 12 has a large number of irregularities on at least one surface. As a result, the covered wire 11 becomes a coated wire 111 with projections and depressions.

凹凸付被覆線１１１は一旦巻取ドラムＭＤに巻取るか、
又はそのままただちに公知の（例えば特公昭３７−１４
４７２開示の如き）長螺旋成形装置１３に送給され、該
装置１３によつて長螺旋内面に多数の凹凸を設けた長螺
旋状被覆線１１２に形成され、図外の切断装置によつて
所定長に切断され、かつ必要に応じて中間部に折曲加工
が施こされて螺旋状電線支持具Ａとなる。The coated wire 111 with concave and convex portions is once wound on a winding drum MD, or
Or immediately as it is publicly known (for example, Japanese Patent Publication No. 37-14
The coated wire 112 is fed to a long helical forming device 13 (such as disclosed in No. 472), and is formed into a long helical coated wire 112 having a large number of irregularities on the inner surface of the long helix, and is cut into a predetermined shape by a cutting device (not shown). The helical wire support A is obtained by cutting into lengths and bending the intermediate portion as necessary.

第５図は以上のようにして成形された螺旋状電線支持具
の部分的斜視図で、金属線心２は節付てあり、被覆５１
の凹凸は平面と円錐状突起１０１とからなつている。FIG. 5 is a partial perspective view of the spiral wire support formed as described above, in which the metal wire core 2 is knotted and the coating 51
The unevenness consists of a flat surface and a conical protrusion 101.

第６図は螺旋状電線支持具が複数本（図において３本）
の金属線心２，２，２を有し、被覆５１の凹凸は平面と
角錐状の突起１０２とからなる場合の螺旋状電線支持具
の部分的斜視図である。Figure 6 shows multiple spiral wire supports (three in the figure).
2 is a partial perspective view of a helical wire support having metal wire cores 2, 2, 2 of FIG.

なお、実施例として第１図ては長螺旋成形工程、被覆成
形工程、凹凸形成工程〔（ハ）（イ）（口）〕の順を、
また第４図ては被覆成形工程、凹凸形成工程、長螺旋成
形工程〔（イ）（口）（ハ）〕の順をそれぞれ挙けて説
明したけれども、第３の実施例として被覆成形工程、長
螺旋成形工程、凹凸形成工程〔（イ）（ハ）（ロ）〕の
順てなされる場合もある。また、凹凸を構成する突起と
して単独突起を図示したが、長螺旋に対して直交する方
向へ連続するものであつても差支えない。さらにまた、
凹凸形成手段としては図示したローラー、キヤタピラー
の他に一対の無端ベルト等の公知手段があることは勿論
である。このようにして成形された螺旋状電線支持具Ａ
は例えば実公昭４４−１９９４８号記載の螺旋状電線支
持具と同様、２つ折り状の中間部１５を柱上の引留装置
に係合し、螺旋状の脚部１６，１６は交互に噛み合せ状
に電線に巻装して使用する。すると、脚部１６，１６の
螺旋内面の凹凸１０，１０・・・が電線と接触して摩擦
係台力の大きい（電線支持力の大きい）電線支持部が得
られるのてあるが、この際本発明よる凹凸１０，１０・
・・は被覆５１の加圧変形によつて形成されるから、電
線が長螺旋に沿つて捩れる場合にも有効な凹凸を設けた
螺旋状電線支持具を安価に製造できる効果があり、また
形成された突起は被覆と一体形成であるから脱落するお
それはない。As an example, Fig. 1 shows the order of the long spiral molding process, the covering molding process, and the unevenness forming process [(C), (B), and (C)].
In addition, in FIG. 4, the covering molding process, the unevenness forming process, and the long spiral molding process [(a), (mouth), and (c)] were respectively listed and explained in order, but as a third embodiment, the covering molding process, The long spiral forming process and the unevenness forming process [(a), (c), and (b)] may be performed in this order. Further, although a single protrusion is shown as a protrusion constituting the unevenness, it may be continuous in a direction perpendicular to the long spiral. Furthermore,
In addition to the illustrated rollers and caterpillars, known means such as a pair of endless belts may be used as the unevenness forming means. Spiral wire support A formed in this way
For example, similar to the spiral electric wire support device described in Utility Model Publication No. 44-19948, the bifold intermediate portion 15 is engaged with a retaining device on a column, and the spiral legs 16, 16 are arranged in an interlocking manner alternately. Used by wrapping it around electric wire. Then, the unevenness 10, 10, etc. on the spiral inner surface of the legs 16, 16 comes into contact with the wire, and a wire support portion with a large frictional force (large wire supporting force) is obtained. Irregularities 10, 10 according to the present invention
... are formed by pressurized deformation of the coating 51, so that it is possible to manufacture at a low cost a spiral wire support having irregularities that are effective even when the wire is twisted along a long spiral. Since the formed protrusions are integrally formed with the covering, there is no risk of them falling off.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明を実施するための装置の概要図、第２図
は凹凸形成用ローラーの一例を示す正面図、第３図は螺
旋状電線支持具の一例を示す平面図、第４図は本発明を
実施するための他の装置の概要図、第５図、第６図はそ
れぞれ螺旋状電線支持具の部分的斜視図てある。 １は金属線心送給装置、２は金属線心、３，１３は長螺
旋成形装置、４は長螺旋状金属線心、５，１１は被覆線
、５１は被覆、８，１２は凹凸形成用ローラーおよびキ
ヤタピラー、１０は凹凸、１０１，１０２は凹凸を構成
する突起、Ａは螺旋状電線支持具。Fig. 1 is a schematic diagram of an apparatus for carrying out the present invention, Fig. 2 is a front view showing an example of a roller for forming unevenness, Fig. 3 is a plan view showing an example of a spiral electric wire support, and Fig. 4 5 is a schematic diagram of another apparatus for carrying out the present invention, and FIGS. 5 and 6 are partial perspective views of a helical wire support. 1 is a metal wire core feeding device, 2 is a metal wire core, 3, 13 is a long spiral forming device, 4 is a long spiral metal wire core, 5, 11 is a coated wire, 51 is a coating, 8, 12 is an uneven forming device 10 is an unevenness, 101 and 102 are protrusions forming the unevenness, and A is a spiral electric wire support.

Claims (1)

【特許請求の範囲】[Claims] １ 高分子材料被覆金属線によつて構成され、かつ長手
方向に電線に巻装しうる複数の長螺旋を連成してなる螺
旋状電線支持具の製造方法において、（イ）金属線心に
熱可塑性高分子材料を被覆して被覆線を得る工程と、（
ロ）上記被覆線の被覆に加圧変形手段を施して被覆の少
なくとも一面に多数の凹凸を設ける工程と、（ハ）前記
（イ）工程の前又は後に、金属線心又は被覆線を長螺旋
形に成形する工程と、からなることを特徴とする螺旋状
電線支持具の製造方法。1. In a method for manufacturing a helical wire support made of a metal wire coated with a polymeric material and in which a plurality of long helices that can be wound around the wire in the longitudinal direction are interconnected, (a) the metal wire core is A step of coating a thermoplastic polymer material to obtain a coated wire;
(b) Applying pressure deformation means to the covering of the covered wire to form a large number of irregularities on at least one surface of the covering; (c) Before or after the step (a), the metal wire core or the covered wire is formed into a long spiral. 1. A method for manufacturing a spiral electric wire support, comprising a step of forming it into a shape.