JPS5992708A - Method of producing both covers for end of power cable - Google Patents

Method of producing both covers for end of power cable

Info

Publication number
JPS5992708A
JPS5992708A JP20135582A JP20135582A JPS5992708A JP S5992708 A JPS5992708 A JP S5992708A JP 20135582 A JP20135582 A JP 20135582A JP 20135582 A JP20135582 A JP 20135582A JP S5992708 A JPS5992708 A JP S5992708A
Authority
JP
Japan
Prior art keywords
hole
diameter
circular body
electric cable
hole diameter
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.)
Pending
Application number
JP20135582A
Other languages
Japanese (ja)
Inventor
永田 昭生
緒方 輝実
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP20135582A priority Critical patent/JPS5992708A/en
Publication of JPS5992708A publication Critical patent/JPS5992708A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、プラスチック、ゴム或はこれらの混合組成物
からなる電カケープル端部用両頂の製造方法に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of manufacturing a cap for the end of an electric cable made of plastic, rubber, or a mixed composition thereof.

〔発明の背景〕[Background of the invention]

従来ケーブル端末系11立に於て、屋外用として両頂を
設ける。その数句けに当っては第1図に示す如くまず「
口覆の座としてケーブル(1)に両頂の内径に適したよ
うにテープ(2)を巻き、これに両頂(3)を挿入後、
ずれ防止用のテープ(4)を巻く必要がある。
In the conventional cable terminal system 11, both tops are provided for outdoor use. As shown in Figure 1, for those few phrases, first of all,
Wrap tape (2) around the cable (1) as a seat for the mouth cover in a manner suitable for the inner diameter of both peaks, and after inserting both peaks (3) into this,
It is necessary to wrap tape (4) to prevent slippage.

このテープ巻作業は時間と技能を要するもので煩雑であ
った。
This tape winding work was complicated and required time and skill.

−1,記の点を改良した両頂として、両頂の座に当る部
、即ちケーブル端部と接合する接合部に熱収縮性を付q
−シた両頂が採用されるようになった。
-1. As a double peak that improves the points mentioned above, heat shrinkage is added to the parts that correspond to the seats of both peaks, that is, the joints that join with the cable ends.
-The two tops are now used.

この様な両頂は、プラスチック、ゴム或はこれらの混合
組成物をインショクジョンモールド法やブローモールド
法により傘状に成形した後、電子線照射により架橋を行
ない加熱状態で接合部を膨張させ、冷却して製造してい
た。第2図は熱収縮性接合部を有する雨覆の断面図で、
(5)は膨張前の接合部、(6)は膨張により熱収縮性
が付与された接合部である。
Such apexes are formed by molding plastic, rubber, or a mixture thereof into an umbrella shape by injection molding or blow molding, and then crosslinking with electron beam irradiation and expanding the joint under heating. It was produced by cooling. Figure 2 is a cross-sectional view of a rain cover with heat-shrinkable joints;
(5) is a joint before expansion, and (6) is a joint that has been given heat-shrinkability by expansion.

ところが上記雨覆を製造するに当って、金型を必要とし
、ケーブルのサイズに応じた雨覆を製造する場合は、そ
のサイズの数に応じた金型を準備しておかねばならない
ことから、その成形コストは著しく高いものであった。
However, in manufacturing the above-mentioned rain cover, a mold is required, and when manufacturing a rain cover according to the size of the cable, molds corresponding to the number of sizes must be prepared. The molding cost was extremely high.

又、電子線照射時、均一な照射量をえ難いため、−成形
品の各部分に、t、・いてゲル分(架橋度)の差が生じ
、それによる歪が発生する。それ故、使用時加熱する際
に、雨覆の形状にゆがみが生ずるという欠点があった。
Furthermore, since it is difficult to obtain a uniform irradiation dose during electron beam irradiation, differences in gel content (degree of crosslinking) occur in each part of the molded product, resulting in distortion. Therefore, there is a drawback that the shape of the rain cover is distorted when it is heated during use.

本発明は、上記の点を改良した電カケープル)IA1部
用雨覆両頂造方法を提供するものである。
The present invention provides a method for constructing a rain cover and both roofs for the first part of the electric cable (IA), which improves the above-mentioned points.

〔発明の要約〕 本発明の要旨とするところは、プラスデック、ゴム或は
これらの混合組成物から成るシートより切り取った円形
体の中心部に、電カケープル端部の外径よりも小さい径
の穴を明け、」1記円形体を上記プラスチック、ゴム或
はこれらの混合組成物の融点又は軟化魚具」二に加熱し
た後、上記穴に」二記電カケープル端部の外径より太ぎ
な径を有する穴径拡大具を挿入して該穴を拡大し、次い
で上記穴拡大具を挿入した状態のまま上記円形体を冷却
した後」二記穴径拡大具を抜き取って、上記拡大された
穴の周囲に円筒形接合部を形成することを特徴とする電
カケープル端部用両頂の製造方法にある。
[Summary of the Invention] The gist of the present invention is that a circular body cut out from a sheet made of PlusDeck, rubber, or a mixed composition thereof has a diameter smaller than the outer diameter of the end of the electric cable in the center of the circular body. After drilling a hole and heating the circular body to the melting point or softening temperature of the plastic, rubber or mixed composition thereof, insert a cape with a diameter larger than the outer diameter of the end of the cape into the hole. After inserting a hole diameter expander having a diameter to enlarge the hole, and then cooling the circular body with the hole expander inserted, remove the hole diameter expander and enlarge the hole. A method for manufacturing both ends of an electric cable, characterized by forming a cylindrical joint around a hole.

本発明において、更に好ましくは、穴径拡大具が、軸方
向に工具上分割し得るもので、穴に挿入した1麦、分割
を開くことによって穴径を拡大することにある。
In the present invention, it is further preferred that the hole diameter enlarging tool is capable of being split on the tool in the axial direction, and the hole diameter is enlarged by opening the split when inserted into the hole.

〔発明の詳細な説明〕[Detailed description of the invention]

プラスデック、ゴム或はこれらの混合組成物のシートを
電子線を照q=+することによって架橋した後、該シー
トを円形状に切り取って円形体とし、該円形体の中心部
に、電カケープル端部の外径より小さい径の穴を明ける
。穴は円形体の切り取りと同時に行なってもよ(、この
場合打ち抜きによる方法を用いることができる。
After crosslinking a sheet of PlusDeck, rubber, or a mixed composition thereof by irradiating it with an electron beam, the sheet is cut into a circular shape, and an electric cable is placed in the center of the circular body. Drill a hole with a diameter smaller than the outside diameter of the end. The holes may be made at the same time as cutting out the circular body (in this case, a punching method can be used).

次いで上記円形体を、プラスデック、ゴム或はこれらの
混合組成物の融点又は軟化点以上に加熱する。例えば、
円形体が融点約100“Cのポリエチレンから成る場合
は、120’G  以」二の温度−C加熱される。加熱
は円形体中心部の穴の周辺のみ行なってもよく、円形体
全体を例えば恒温槽に人I]ることによって行なっても
よい。
Next, the circular body is heated to a temperature above the melting point or softening point of Plasdec, rubber, or a mixed composition thereof. for example,
If the circular body is made of polyethylene with a melting point of about 100"C, it is heated to a temperature of -2"C above 120"G. Heating may be performed only around the hole in the center of the circular body, or may be performed by placing the entire circular body in a constant temperature bath, for example.

加熱後、第:3図に示す様に円形体(7)の中心に設け
られた穴(8)の中に、穴径拡大具(9)を挿入する。
After heating, the hole diameter enlarging tool (9) is inserted into the hole (8) provided at the center of the circular body (7) as shown in Figure 3.

穴径拡大具(り)は電カケープル端部の外径より大きい
径を有するものであってもよいが、軸方向に分割し得る
穴径拡大具(9)を用いれば、挿入後分割を開くことに
よって穴径を拡大することがてき乙ので、拡大の程度を
ケーブル端部の外径に応して任意に選定することがてき
、より好ましい。第4・図は穴径拡大具(9)を穴に挿
入した後、穴径拡大具(9)の分割を開いて、穴径を拡
大したときの状態を示す断面図で、拡大後、空冷により
、円形体(7)を室温まで冷却する。第41図において
00は円形体(1)を両面から把持するリング状の保持
具で、金属製のものが主に楔いられる。保持具([0は
穴径拡大具(9)が穴(8)に挿入されるに先立つ−C
1円形体(7)を作詩する。l+’il 、第3図にふ
・いて・保持具00)の図示を省略した。保持具O(+
)は、その内部に冷却水を通す管を設け、冷却機能を備
えたものであってもよい。
The hole diameter expander (9) may have a diameter larger than the outer diameter of the end of the power cable, but if a hole diameter expander (9) that can be split in the axial direction is used, the split can be opened after insertion. Since the hole diameter can be enlarged by this, the degree of enlargement can be arbitrarily selected depending on the outer diameter of the cable end, which is more preferable. Figure 4 is a cross-sectional view showing the state when the hole diameter expander (9) is inserted into the hole and then the hole diameter expander (9) is opened and the hole diameter is expanded. The circular body (7) is cooled down to room temperature. In FIG. 41, 00 is a ring-shaped holder that grips the circular body (1) from both sides, and is mainly made of metal. Holder ([0 is -C before the hole diameter expander (9) is inserted into the hole (8)
1 Compose a circular body (7). The illustration of the holder 00) in FIG. 3 is omitted. Holder O(+
) may be provided with a cooling function by providing a pipe for passing cooling water therein.

然る後、拡大された穴より、穴径拡大具(9)を抜き取
る。このとき穴径拡大具((わが分割し得るものであれ
ば、開かれた分割を閉じることによって抜き取りが一層
容易となる。第゛5図履−穴、径拡大具(9)を抜き取
り、保持具(10)を除い−C得られた電カケープル端
部用両頂(1])で、拡大された穴(2)の周囲には円
筒状接合部Oのが形成されている。この円筒状接合部(
1)は、雨覆をケーブル端部に挿入し、ケーブル端部と
接合するときに固定するためのもので円筒状接合部0功
の内面に、接着剤層(例えばホット、メルト接着剤)α
枠を設けると、−ノ・Δケーブル端部との固定が確定と
なり望ましい。
After that, the hole diameter enlarger (9) is removed from the enlarged hole. At this time, if the hole diameter expander (9) can be divided, it will be easier to remove it by closing the opened division. A cylindrical joint O is formed around the enlarged hole (2) at both tops (1]) of the obtained electric cable ends except for the tool (10).This cylindrical Joint (
1) is for inserting the rain cover into the cable end and fixing it when joining the cable end. On the inner surface of the cylindrical joint part, an adhesive layer (e.g. hot, melt adhesive) α is applied.
Providing a frame is desirable because it ensures fixation with the -no/Δ cable end.

〔発明の効果〕〔Effect of the invention〕

本発明の電カケープル端部用両頂の製造方法は以」二の
通り為されるものであるから、以下の効果を奏する。
The method of manufacturing both ends for the ends of a power cable according to the present invention is carried out in the following two ways, and therefore has the following effects.

(1)円形体は、シートから切り取られるから、金型を
用いて成形しkものより、著しく安価に製造することが
できる。
(1) Since the circular body is cut from a sheet, it can be manufactured at a significantly lower cost than one formed using a mold.

(2ンまた、円形体はサイズに応じて容易に切り取るこ
ともでき、穴径も任意に選定できるので、各種ケーブル
端部の外径に応して製造できる。
(In addition, the circular body can be easily cut to size, and the hole diameter can be arbitrarily selected, so it can be manufactured according to the outer diameter of various cable ends.

(3)円形体は、シートから切り取るだけで形成するこ
とができるので、モールドザイクルの長い金型を用いた
モールド法に比ベニ数が少なくてlJlむ。
(3) Since the circular body can be formed by simply cutting it from the sheet, the number of molds is smaller than that of a molding method using a mold with a long mold cycle.

(4)シートは均一に電子線原則することか可能である
から、各箇所で架橋度の差が生ずることは71rく、そ
れ故得られた雨覆は加熱により形状の歪が小さい。
(4) Since the sheet can be uniformly exposed to electron beams, it is unlikely that the degree of crosslinking will differ at each location, and therefore the resulting rain cover will have little distortion in shape due to heating.

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

第1図は従来の雨覆を示す断面図、第2図は従来の熱収
縮性を付−ラ・された雨覆、第:3図は円形体に設けた
穴に穴径拡大具を挿入するときの斜iJ、!図、第4・
図は穴径拡大具を挿入し、穴を拡大したときの断面図、
第5図は本発明により得られた電カケープル端部用両頂
の斜視図である。 (1)・・ケーブル、(3)・雨覆、(6)・・接合部
、(7)・・円形体、(8)・・・穴、(())・・穴
径拡大具、’(lfト・保持具、(11)・本発明に得
られた雨覆、(12)・・円筒状接合部、(I、I) 
、・・接着剤層。 芹1日 芳3図 著4図 方5日
Figure 1 is a cross-sectional view of a conventional rain cover, Figure 2 is a conventional rain cover with heat-shrinkable properties, and Figure 3 is a hole diameter expander inserted into a hole made in a circular body. Oblique iJ when doing,! Figure, 4th
The figure is a cross-sectional view when the hole diameter enlarger is inserted and the hole is enlarged.
FIG. 5 is a perspective view of both ends of the electric cable obtained according to the present invention. (1) Cable, (3) Rain cover, (6) Joint, (7) Circular body, (8) Hole, (()) Hole diameter expander,' (lft・Holder, (11)・Rain cover obtained in the present invention, (12)・Cylindrical joint, (I, I)
,...adhesive layer. Seri 1 day Yoshi 3 illustrations 4 illustrations 5 days

Claims (2)

【特許請求の範囲】[Claims] (1)プラスデック、ゴム或はこれらの混合組成物から
成るシートより切り取った円形体の中心部に電カケープ
ル端部の外径よりも小さい径の穴を明け、−上記円形体
を上記プラスチック、ゴム或はこれらの混合組成物の融
点又は軟化魚具」−に加熱した後、」二記穴に穴径拡大
具を挿入して該穴を上記電カケープル端部の外径より太
ぎな径にまで拡大し、次いで上記穴径拡大具を挿入した
状態のよま上記円形体を冷却した後上記穴径拡大具を抜
き取って、」ユ記拡大した穴の周囲に円筒形接合部を形
成することを特徴とする電カケープル端部用両頂の製造
方法。
(1) A hole with a diameter smaller than the outer diameter of the end of the electric cable is made in the center of a circular body cut from a sheet made of PlusDeck, rubber, or a mixed composition thereof, and - the circular body is made of the plastic, After heating the rubber or a mixed composition thereof to the melting point or softening temperature, insert a hole diameter expander into the two-marked hole to make the hole a diameter thicker than the outer diameter of the end of the electric cable. Then, after cooling the circular body with the hole diameter expander inserted, the hole diameter expander is removed to form a cylindrical joint around the enlarged hole. A method for manufacturing both ends of an electric cable, characterized by:
(2)穴径拡大具が、軸方向に工具上分割し得るもので
あって、穴に挿入した後、分割を開くことに工つで穴径
を拡大する特許請求の範囲第(1)項記載の電カケープ
ル端部用両頂の製造方法。
(2) Claim (1) wherein the hole diameter enlarging tool is splittable on the tool in the axial direction, and after being inserted into the hole, the hole diameter is enlarged by opening the splits. The method for manufacturing the ends of the electric cable described above.
JP20135582A 1982-11-16 1982-11-16 Method of producing both covers for end of power cable Pending JPS5992708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20135582A JPS5992708A (en) 1982-11-16 1982-11-16 Method of producing both covers for end of power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20135582A JPS5992708A (en) 1982-11-16 1982-11-16 Method of producing both covers for end of power cable

Publications (1)

Publication Number Publication Date
JPS5992708A true JPS5992708A (en) 1984-05-29

Family

ID=16439661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20135582A Pending JPS5992708A (en) 1982-11-16 1982-11-16 Method of producing both covers for end of power cable

Country Status (1)

Country Link
JP (1) JPS5992708A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009068248A (en) * 2007-09-13 2009-04-02 Shimizu Corp Girder-to-girder connection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009068248A (en) * 2007-09-13 2009-04-02 Shimizu Corp Girder-to-girder connection device

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