JPH0140475B2 - - Google Patents
Info
- Publication number
- JPH0140475B2 JPH0140475B2 JP57105650A JP10565082A JPH0140475B2 JP H0140475 B2 JPH0140475 B2 JP H0140475B2 JP 57105650 A JP57105650 A JP 57105650A JP 10565082 A JP10565082 A JP 10565082A JP H0140475 B2 JPH0140475 B2 JP H0140475B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- mold
- molding
- liquid medium
- resin
- 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
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Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Processing Of Terminals (AREA)
Description
【発明の詳細な説明】
この発明はゴム・プラスチツクケーブルの接続
方法に関し、特に、インジエクシヨンによつて接
続部を形成する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting rubber-plastic cables, and more particularly to a method for forming connections by injection.
発明の背景と目的
インジクシヨンによつて接続部を形成する場
合、従来は、
(1) ケーブル導体接続部の周辺上に成形用の金型
をかぶせて、その中に補強絶縁体樹脂をインジ
エクシヨンし、
(2) 成形用金型を冷却して外し、加熱、加圧用の
金型に取り換え、インジエクシヨンした樹脂を
加熱架橋し、かつケーブル絶縁体と融着させ
る、
という方法をとつていた。BACKGROUND AND OBJECTIVES OF THE INVENTION When forming a connection part by injection, conventionally, (1) a mold is placed over the periphery of the cable conductor connection part, and reinforcing insulating resin is injected into the mold; (2) The method used was to cool and remove the molding mold, replace it with a heating and pressurizing mold, heat crosslink the injected resin, and fuse it with the cable insulator.
しかし、この方法においては、インジエクシヨ
ンした樹脂をいつたん冷却し、改めてまた架橋の
ために加熱するので、熱の損失が大きい。また接
続部の形成時間が長くなる。 However, in this method, the injected resin is once cooled and then heated again for crosslinking, resulting in large heat losses. Furthermore, the time required to form the connection portion becomes longer.
このような欠点を解消するため、次のような提
案がされている（特願昭57−008297号）。すなわ
ち「第６図」のように、変形しやすい耐熱性材料
からなる成形用ダイヤフラム５０上に、変形しに
くい耐熱性材料からなり、かつ多数の透孔５２を
持つ成形筒５４を設け、その外側に加圧容器（外
箱）５６を配置した構造の型５８を使用する。そ
して、前記成形用チユーブ５０内に補強絶縁体用
樹脂６０をインジエクシヨンした後に、高周波誘
導コイル６２などによつて加熱すると同時に、透
孔５２を通して成形筒５４の内部に加圧ガス６４
を圧入し、成形用ダイヤフラム５０を介して補強
絶縁体用樹脂６０を加圧するようにしたものであ
る。 In order to eliminate these drawbacks, the following proposal has been made (Japanese Patent Application No. 57-008297). That is, as shown in FIG. 6, a molding cylinder 54 made of a heat-resistant material that does not easily deform and has a large number of through holes 52 is provided on a molding diaphragm 50 that is made of a heat-resistant material that is easily deformed. A mold 58 having a structure in which a pressurized container (outer box) 56 is arranged is used. After the reinforcing insulator resin 60 is injected into the molding tube 50, it is heated by a high-frequency induction coil 62 or the like, and at the same time, a pressurized gas 64 is introduced into the molding tube 54 through the through hole 52.
is press-fitted, and the reinforcing insulator resin 60 is pressurized via the molding diaphragm 50.
本発明も、上記提案と同じように、補強絶縁体
用樹脂のインジエクシヨンの後、金型を取り換え
ずに直ちに加熱加圧モールドができるようにした
ものである。ただし、ガスの代りに耐熱性に優
れ、補強絶縁体樹脂とほぼ同じ比重を有する液状
媒体（シリコーン油など）を使用し、加熱加圧し
た液状媒体によつて（ほかに外部の熱源を用いず
に）補強絶縁体用樹脂の加熱加圧モールドができ
るようにし、また液状媒体を使つて、モールド終
了後の冷却も効率よくできるようにした。 Similar to the above proposal, the present invention also enables heating and pressure molding to be performed immediately after injection of reinforcing insulator resin without replacing the mold. However, instead of gas, a liquid medium (such as silicone oil) with excellent heat resistance and approximately the same specific gravity as the reinforcing insulator resin is used, and the liquid medium is heated and pressurized (without using any other external heat source). (2) It has become possible to heat and press mold the resin for reinforcing insulators, and it has also made it possible to efficiently cool the resin after molding is completed using a liquid medium.
発明の構成（第１〜５図）
(1) 金型１０を使用し、その中に補強絶縁体用樹
脂３６をインジエクシヨンし、その樹脂を加熱
加圧して接続部を形成する方法に関するもので
あること、
(2) 「第１〜３図」のように、変形しにくい耐熱
性材料からなる外箱１２の内部に、変形しやす
い耐熱性材料からなる成形用のダイヤフラム１
８を設け、その外側に、変形しにくい材料から
なる成形筒２２を、金型１０の外側から開閉で
きるように、かつ閉じたときはその内面がダイ
ヤフラム１８に密着し、開いたときはダイヤフ
ラム１８から離れるようにした金型１０を使用
すること、
(3) 成形筒２２を閉じたまま、ダイヤフラム１８
内に補強絶縁体用樹脂３６をインジエクシヨン
し、その後耐熱性に優れる液状媒体３８を加熱
加圧して外箱１２内に入れるとともに、成形筒
２２を開き、ダイヤフラム１８の上から、補強
絶縁体用樹脂３６を、液状媒体３８によつて加
熱加圧すること、
を特徴とする。Structure of the Invention (Figures 1 to 5) (1) This relates to a method of using a mold 10, injecting reinforcing insulator resin 36 into the mold, and forming a connection part by heating and pressurizing the resin. (2) As shown in Figures 1 to 3, a molding diaphragm 1 made of a heat-resistant material that is easily deformed is placed inside an outer box 12 made of a heat-resistant material that is hard to deform.
A molding cylinder 22 made of a material that is difficult to deform is provided on the outside of the mold 10 so that it can be opened and closed from the outside of the mold 10, and its inner surface is in close contact with the diaphragm 18 when it is closed, and the diaphragm 18 is closed when it is opened. (3) Use the mold 10 that is separated from the diaphragm 18 while keeping the molding cylinder 22 closed.
A reinforcing insulator resin 36 is injected into the outer box 12, and then a highly heat-resistant liquid medium 38 is heated and pressurized and put into the outer box 12.The molded cylinder 22 is opened and the reinforcing insulator resin is injected from above the diaphragm 18. 36 is heated and pressurized with a liquid medium 38.
その詳しい説明 １０は使用する金型の主要部分である。Detailed explanation 10 is the main part of the mold used.
１２はその外箱で、内部に圧入する高温高圧の
液状媒体３８に耐えるような材料（金属、プラス
チツクなど）からなる。１４は液状媒体３８の入
口、１６は出口である。 The outer box 12 is made of a material (metal, plastic, etc.) that can withstand the high temperature and high pressure liquid medium 38 that is press-fitted inside. 14 is an inlet of the liquid medium 38, and 16 is an outlet.
１８はダイヤフラムである。これは成形しよう
とする補強絶縁体とほぼ同じ形をしたチユーブ状
のもので、シリコーンゴムなどのように、耐熱性
があり、変形し易い（可とう性があり、弾力があ
る）材料からなる。このダイヤフラム１８は、金
型１０を組み立てるときに取付ける。 18 is a diaphragm. This is a tube-shaped material that has almost the same shape as the reinforcing insulator to be molded, and is made of a material that is heat resistant and easily deformed (flexible and elastic), such as silicone rubber. . This diaphragm 18 is attached when assembling the mold 10.
２０は支持金具で、ダイヤフラムの両端部を外
から押える。これは金属や硬質プラスチツクから
なり、金型１０に固定される。またその内径はダ
イヤフラム１８の外径と同じになつている。 Reference numeral 20 denotes support fittings that press both ends of the diaphragm from the outside. This is made of metal or hard plastic and is fixed to the mold 10. Further, its inner diameter is the same as the outer diameter of the diaphragm 18.
２２は成形筒で、たとえば二つ割れの円筒体か
らなり、金型１０の外から開閉できるようにして
いる。すなわち、たとえば、外箱１２を気密に貫
通するロツド２４の先端を成形筒２２に接合し
（第２図）、そのロツド２４を出し入れすることに
よつて、成形筒２２を開閉できるようにする。成
形筒２２は閉じた状態のとき（第２図）、ダイヤ
フラム１８と支持金具２０上に密着する。また開
いたとき（第３図）、ダイヤフラム１８などから
離れ、ダイヤフラム１８などとの間にすき間がで
きるようにしている。この成形筒２２は金属や耐
熱性の硬質プラスチツクなどによつて作る。 A molding cylinder 22 is made of, for example, a cylindrical body split into two parts, and can be opened and closed from outside the mold 10. That is, for example, the tip of a rod 24 that airtightly penetrates the outer box 12 is joined to the molding cylinder 22 (FIG. 2), and by taking the rod 24 in and out, the molding cylinder 22 can be opened and closed. When the molding tube 22 is in the closed state (FIG. 2), it is in close contact with the diaphragm 18 and the support fitting 20. Furthermore, when opened (FIG. 3), it separates from the diaphragm 18, etc., so that a gap is created between it and the diaphragm 18, etc. This molded cylinder 22 is made of metal, heat-resistant hard plastic, or the like.
次に、成形方法を説明する（第４、第５図）。 Next, the molding method will be explained (FIGS. 4 and 5).
(1) ケーブル絶縁体４０の端末を口出しし、導体
を接続する。ケーブル導体接続部４２上に内部
半導電層４４を形成し、それらの上に金型１０
を装着する。ほかに補助金具２６，２８、押出
し用ダイ３０、押出し用ニツプル３２も装着す
る。(1) Open the terminal of the cable insulator 40 and connect the conductor. An internal semiconducting layer 44 is formed on the cable conductor connection portion 42 and a mold 10 is formed thereon.
Attach. In addition, auxiliary metal fittings 26, 28, an extrusion die 30, and an extrusion nipple 32 are also attached.
(2) 押出し機３４を接続し、成形筒２２を閉じて
おいたまま、ダイヤフラム１８内に補強絶縁体
用樹脂３６（未架橋剤入りポリエチレン、エチ
レンプロピレンゴム、エチレン酢ビゴムなど）
をインジエクシヨンする。そのときダイヤフラ
ム１８の外側は、支持金属２０と成形筒２２に
よつて押えられているので、補強絶縁体の形が
決まる。(2) With the extruder 34 connected and the molding tube 22 closed, reinforcing insulator resin 36 (polyethylene with non-crosslinking agent, ethylene propylene rubber, ethylene acetate rubber, etc.) is placed inside the diaphragm 18.
Execute the index. At this time, the outside of the diaphragm 18 is pressed down by the support metal 20 and the molded cylinder 22, so that the shape of the reinforcing insulator is determined.
(3) インジエクシヨンの終了後、加熱装置４６で
加熱し（150〜300℃程度）、ポンプ４８で加圧
（0.5〜15Kg／cm2程度）した加熱加圧用の液状媒
体３８を外箱１２内に送り込み、かつ循環させ
る。(3) After the injection is completed, the liquid medium 38 for heating and pressurization, heated by the heating device 46 (about 150 to 300°C) and pressurized by the pump 48 (about 0.5 to 15 Kg/cm 2 ), is placed inside the outer box 12. feed and circulate.
なお液状媒体３８には、シリコーン油のよう
に耐熱性に優れ、かつ補強絶縁体樹脂とほぼ同
じ比重を有する絶縁油を使用する。 Note that as the liquid medium 38, an insulating oil having excellent heat resistance such as silicone oil and having approximately the same specific gravity as the reinforcing insulating resin is used.
また上記(2)のインジエクシヨン工程におい
て、あらかじめ上記液状媒体３８を外箱１６内
に送りこみ、かつ循環させて、成形筒２２を80
〜130℃に加熱してインジエクシヨンを行なう
方法も、容易に考えられる。 In addition, in the injection process (2) above, the liquid medium 38 is sent into the outer box 16 in advance and circulated to form the molding tube 22 by 80°.
A method of performing in-die extraction by heating to ~130°C is also easily conceivable.
(4) ロツド２４を引いて成形筒２２を開き、液状
媒体３８が直接ダイヤフラム１８に接するよう
にする。液状媒体３８を150〜300℃、0.5〜15
Kg／cm2程度にし、液状媒体３８により、ダイヤ
フラム１８を介して補強絶縁体用樹脂３６を加
熱加圧し、架橋を進行させる（外部の熱源を使
用しないで、液状媒体３８の熱だけで補強絶縁
体用樹脂３６を加熱する）。(4) Pull the rod 24 to open the forming tube 22 so that the liquid medium 38 comes into direct contact with the diaphragm 18. Liquid medium 38 at 150~300℃, 0.5~15
Kg/cm 2 and heat and pressurize the reinforcing insulator resin 36 with the liquid medium 38 through the diaphragm 18 to proceed with crosslinking (reinforced insulation using only the heat of the liquid medium 38 without using an external heat source). heating the body resin 36).
(5) モールド終了後、こんどは冷却装置４７によ
つて液状媒体３８を冷却して、外箱１２内を循
環させる（成形筒２２は開いたまま）。そして
一定の圧を加えたまま補強絶縁体用樹脂３６を
冷却させる。(5) After molding is completed, the liquid medium 38 is cooled by the cooling device 47 and circulated within the outer box 12 (the molding tube 22 remains open). Then, the reinforcing insulator resin 36 is cooled while applying a constant pressure.
(6) 冷却後離型し、補強絶縁体上に外部しやへい
層と金属しやへい層とを設け、さらに保護管を
取付ける。(6) After cooling, the mold is released, an external refractory layer and a metal refractory layer are provided on the reinforcing insulator, and a protective tube is attached.
なお、補強絶縁体用樹脂３６の加熱を液状媒体
３８だけによらず、従来同様に高周波誘導加熱な
どの外部熱源を併用するようにしてもよい。その
ときは外箱１２や成形筒２２などは、非磁性体ま
たは非金属で作る。 Note that the reinforcing insulator resin 36 is not only heated by the liquid medium 38, but also an external heat source such as high-frequency induction heating may be used in conjunction with the conventional method. In that case, the outer box 12, molded cylinder 22, etc. are made of non-magnetic material or non-metal.
発明の効果
(1) 金型１０の外側から開閉できる成形筒２２
と、変形し易い材料からなるダイヤフラム１８
とを使用するので、成形筒２２を閉じておくこ
とにより、ダイヤフラム１８内に補強絶縁体用
樹脂３６をインジエクシヨンしたとき補強絶縁
体の外径を維持できるとともに、成形筒２２を
開くことにより、ダイヤフラム１８の外側から
圧力を加えてモールドすることができる。した
がつて一つの金型で成形とモールドの両方を行
なうことができる。Effects of the invention (1) Molding cylinder 22 that can be opened and closed from the outside of the mold 10
and a diaphragm 18 made of a material that is easily deformed.
By keeping the molding tube 22 closed, the outer diameter of the reinforcing insulator can be maintained when the reinforcing insulator resin 36 is injected into the diaphragm 18, and by opening the molding tube 22, the diaphragm 18 can be molded by applying pressure from the outside. Therefore, both shaping and molding can be performed with one metal mold.
(2) 加熱加圧の媒体に耐熱性に優れ、かつ補強絶
縁体樹脂とほぼ同じ比重を有する液体を使用す
るので、補強絶縁体が偏肉（補強絶縁体がモー
ルド時に垂れ下る現象）しない。(2) Since a liquid with excellent heat resistance and approximately the same specific gravity as the reinforcing insulator resin is used as the heating and pressurizing medium, uneven thickness of the reinforcing insulator (a phenomenon in which the reinforcing insulator sags during molding) does not occur.
(3) 液状媒体３８は補強絶縁体用樹脂３６の冷却
にも利用できる。またその際はガスよりも冷却
効率がよい。(3) The liquid medium 38 can also be used to cool the reinforcing insulator resin 36. Also, in that case, the cooling efficiency is better than gas.
第１〜５図は本発明に係るもので、第１図は使
用する金型１０の一例の横断平面図で、その−
断面を、第２図に示す。第３図は成形筒２２を
開いた状態の説明図、第４図と第５図は、インジ
エクシヨンとモールドを工程順に示した説明図、
第６図は従来技術の説明図。
１０：金型、１２：外箱、１８：ダイヤフラ
ム、２２：成形筒、３４：押出し機、３６：補強
絶縁体用樹脂、３８：液状媒体。
1 to 5 are related to the present invention, and FIG. 1 is a cross-sectional plan view of an example of a mold 10 used.
A cross section is shown in FIG. FIG. 3 is an explanatory diagram showing the molding tube 22 in an open state, FIGS. 4 and 5 are explanatory diagrams showing the injection molding and the mold in the order of steps,
FIG. 6 is an explanatory diagram of the prior art. 10: Mold, 12: Outer box, 18: Diaphragm, 22: Molding tube, 34: Extruder, 36: Resin for reinforcing insulator, 38: Liquid medium.
Claims (1)
せ、その内部に補強絶縁体用樹脂をインジエクシ
ヨンし、その後、前記補強絶縁体用樹脂の加圧加
熱を行なうゴム・プラスチツクケーブルの接続方
法において、 前記金型として、 変形しにくい耐熱性材料からなる外箱の内部
に、 変形しやすい耐熱材料からなる成形用のダイヤ
フラムを設け、 そのダイヤフラムの外側に、変形しにくい材料
からなる成形筒を、金型の外から開閉できるよう
に、かつ閉じたときはその内面が前ダイヤフラム
に密着し、開いたときはダイヤフラムから離れる
ように設けた、 ものを使用し、 前記成形筒を閉じたまま、前記ダイヤフラム内
に補強絶縁体用樹脂をインジエクシヨンし、 その後、耐熱性に優れ、補強絶縁体樹脂とほぼ
同じ比重を有する液状媒体を、加熱加圧して前記
外箱内に入れるとともに、前記成形筒を開き、前
記ダイヤフラムの上から、前記液体媒体によつて
前記補強絶縁体用樹脂を加熱加圧すること、 を特徴とするゴム・プラスチツクケーブルの接続
方法。[Scope of Claims] 1. A rubber/plastic cable in which a mold is placed over the periphery of the cable conductor connection portion, a reinforcing insulating resin is injected into the mold, and the reinforcing insulating resin is then heated under pressure. In the connection method, as the mold, a molding diaphragm made of a heat-resistant material that is easily deformable is provided inside an outer box made of a heat-resistant material that is hard to deform, and a molding diaphragm made of a material that is hard to deform is provided on the outside of the diaphragm. Close the molding tube by using a molding tube that can be opened and closed from the outside of the mold, and whose inner surface is in close contact with the front diaphragm when closed and away from the diaphragm when opened. Then, a reinforcing insulating resin is injected into the diaphragm, and then a liquid medium having excellent heat resistance and having almost the same specific gravity as the reinforcing insulating resin is heated and pressurized and put into the outer box. A method for connecting a rubber/plastic cable, comprising: opening a molded tube, and heating and pressurizing the reinforcing insulator resin with the liquid medium from above the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57105650A JPS58223279A (en) | 1982-06-19 | 1982-06-19 | Method of connecting rubber, plastic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57105650A JPS58223279A (en) | 1982-06-19 | 1982-06-19 | Method of connecting rubber, plastic cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223279A JPS58223279A (en) | 1983-12-24 |
| JPH0140475B2 true JPH0140475B2 (en) | 1989-08-29 |
Family
ID=14413320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57105650A Granted JPS58223279A (en) | 1982-06-19 | 1982-06-19 | Method of connecting rubber, plastic cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223279A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701117A (en) * | 1986-04-14 | 1987-10-20 | Fujikura Ltd. | Apparatus for jointing CV cables |
| US4767589A (en) * | 1986-04-14 | 1988-08-30 | Fujikura Ltd. | Method for jointing CV cables |
| DE10129223A1 (en) * | 2001-06-19 | 2003-01-23 | Daimler Chrysler Ag | Mold for producing a component |
| WO2018087581A1 (en) | 2016-11-11 | 2018-05-17 | Prysmian S.P.A. | Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured |
-
1982
- 1982-06-19 JP JP57105650A patent/JPS58223279A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223279A (en) | 1983-12-24 |
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