JPS62163504A - Manufacture of molded joint - Google Patents
Manufacture of molded jointInfo
- Publication number
- JPS62163504A JPS62163504A JP61004848A JP484886A JPS62163504A JP S62163504 A JPS62163504 A JP S62163504A JP 61004848 A JP61004848 A JP 61004848A JP 484886 A JP484886 A JP 484886A JP S62163504 A JPS62163504 A JP S62163504A
- Authority
- JP
- Japan
- Prior art keywords
- molded
- diameter
- insulator
- same
- manufacturing
- 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
Links
Landscapes
- Processing Of Terminals (AREA)
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】
［産業上の利用分野１
本発明はモールド型接続部、特にプラスチック電カケー
プル用モールド型接続部の製造方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a method of manufacturing a molded connection part, particularly a molded connection part for a plastic electric cable.
［従来の技術とその問題点］
現在、接続部の絶縁性能はケーブルにくらべて弱干劣る
ため、ケーブルと同一の電気性能を得るためには、どう
しても接続部の外径がケーブルの外径よりも太くならざ
るをえない。絶縁テープを巻き付けただけの従来の接続
部（主に６６ＫＶ以下の電圧に使用されている）では、
単に外径が大きくなるというだけの問題点であったが、
モールド絶縁物をケーブル絶縁体と溶融一体化する超高
圧（１５４ＫＶ以上）のモールド型接続部では、架橋反
応を促進するための溶融、冷却過程において絶縁物が外
径の異なる部分で熱機械的に複雑な挙動を呈し、もって
下記の問題点を生じる。[Conventional technology and its problems] Currently, the insulation performance of the connection part is slightly inferior to that of the cable, so in order to obtain the same electrical performance as the cable, the outer diameter of the connection part must be larger than the outer diameter of the cable. It has no choice but to become thicker. Conventional connections simply wrapped with insulating tape (mainly used for voltages below 66KV)
The problem was simply that the outer diameter became larger, but
In ultra-high voltage (154KV or higher) molded connections where the molded insulation is melted and integrated with the cable insulation, the insulation is thermomechanically bonded to parts with different outer diameters during the melting and cooling process to promote the crosslinking reaction. It exhibits complicated behavior, resulting in the following problems.
（１） 期待した寸法や精度が絶縁物の流動により達
成できない。(1) The expected dimensions and accuracy cannot be achieved due to the flow of the insulator.
（ａ 外観の不１箭い、すなわち商品価値の低下を伴う
。(a) It is accompanied by poor appearance, that is, a decrease in product value.
（３） 冷却過程におけるＦｉ雑な挙動により電気性
能が低下する。なお、これは、主として、ケーブル長手
方向の冷却過程の進行の不均一によるポリエチレン分子
の切断に起因している。(3) Electrical performance deteriorates due to coarse Fi behavior during the cooling process. Note that this is mainly due to the breakage of polyethylene molecules due to non-uniform progress of the cooling process in the longitudinal direction of the cable.
本発明の目的は、上述した従来技術の問題点を解決し、
商品価値および電気性能が向上したモールド型接続部を
製造する方法を提供することにある。The purpose of the present invention is to solve the above-mentioned problems of the prior art,
An object of the present invention is to provide a method for manufacturing a molded connection part with improved commercial value and electrical performance.
［問題点を解決するための手段］
本発明に係るモールド型接続部の製造方法は、モールド
絶縁物と同一材質の同径化材料をモールド型接続部の加
熱加圧部に施してその全体を同径化ないし準同径化した
ものである。[Means for Solving the Problems] The method for manufacturing a molded joint according to the present invention is to apply a diameter equalizing material made of the same material as the mold insulator to the heated and pressurized part of the molded joint, and to It is made to have the same diameter or semi-same diameter.
［作用］
このように、本発明では、加熱加圧部全体を同径化する
ことにより、外径の異なる部分で発生する、絶縁物の複
雑な熱挙動をかなり或は全く解消することができる。[Function] As described above, in the present invention, by making the entire heated and pressurized part the same diameter, the complicated thermal behavior of the insulator that occurs in parts with different outer diameters can be largely or completely eliminated. .
［実施例コ
第１図は本発明の製造方法を説明するためのモールド型
接続部の断面図であり、そして第２図は本発明によって
製造されたモールド型接続部の断面図である。図におい
て、ケーブル導体１と１は導体接続管２によって接続さ
れる。ケーブル導体１のこの接続個所以外の部分はケー
ブル絶縁体３によって覆われている。このケーブル絶縁
体３とモールド絶縁物４を溶融一体化して第２図のモー
ルド型接続部を製造する際にその加熱加圧部５は、セパ
レータ６を介し同径化材料７が施されることにより、そ
の全体が同径化ないし準同径化される。[Example 1] FIG. 1 is a sectional view of a molded connection part for explaining the manufacturing method of the present invention, and FIG. 2 is a sectional view of a molded connection part manufactured by the present invention. In the figure, cable conductors 1 and 1 are connected by a conductor connecting tube 2. A portion of the cable conductor 1 other than this connection point is covered with a cable insulator 3. When the cable insulator 3 and the molded insulator 4 are melted and integrated to produce the molded connection part shown in FIG. As a result, the entire diameter is made the same or almost the same diameter.
同径化材料７は、モールド絶縁物４と同一材質の材料、
或はモールド絶縁物４と同一の熱膨脹率および再結晶化
温度を有するが応力の特異点をつくらない材料である。The same diameter material 7 is the same material as the mold insulator 4,
Alternatively, it is a material that has the same coefficient of thermal expansion and recrystallization temperature as the mold insulator 4, but does not create a stress singularity.
加熱加圧部５は、図示のように加圧用さや５ａおよび加
熱金型５ｂからなる。The heating and pressing section 5 includes a pressing sheath 5a and a heating mold 5b as shown in the figure.
また、準同径化とは、加熱加圧部５の傾斜をなだらかに
することである。Furthermore, the term "quasi-uniform diameter" refers to making the inclination of the heating and pressing section 5 gentle.
溶融時、同径化材料７は、モールド絶縁物４と同一の熱
挙動を呈するので、同軸上で均一に膨張。When melted, the uniform diameter material 7 exhibits the same thermal behavior as the mold insulator 4, so it expands uniformly on the same axis.
収縮する。従ってモールド型接続部の異径部分に生じる
はずのケーブル長手方向の力が発生せず、長手方向への
モールド絶縁物４の流動が生じない。Shrink. Therefore, the force in the longitudinal direction of the cable that would otherwise occur in the different diameter portion of the molded connection portion is not generated, and the molded insulator 4 does not flow in the longitudinal direction.
また、冷却時も再結晶化が同軸上に生じるので、長手方
向には均一な冷却過程をたどることができ、そのため再
結晶化したモールド絶縁物４の分子を引き裂く力は生じ
な、い。Furthermore, since recrystallization occurs coaxially during cooling, a uniform cooling process can be followed in the longitudinal direction, and therefore no force is generated that tears apart the molecules of the recrystallized mold insulator 4.
なお、セパレータ６および加圧用ざや５ａは省略しても
良い。また、超高圧ケーブルでは、しゃへいの接地方式
にクロスボンド方式と呼ばれる通常接続部と絶縁接続部
を組合わせた接地方式を用いるが、これに使用する絶縁
接続部では縁切り部と呼ばれる異径部品を中央に取り付
ける必要がある。この場合も、中央部にはリング状の異
径部ができ、加熱から冷却に至る過程で矢張り絶縁物の
流動が発生するので、このような場合にも本発明適用で
きる。Note that the separator 6 and the pressurizing sheath 5a may be omitted. In addition, ultra-high voltage cables use a grounding method called the cross-bond method for shielding, which combines a normal connection and an insulated connection. Must be mounted in the center. In this case as well, a ring-shaped portion of different diameter is formed in the center, and flow of the diagonal insulator occurs during the process from heating to cooling, so the present invention can be applied to such a case as well.
［発明の効果］ 本発明によれば下記の効果が得られる。[Effect of the invention] According to the present invention, the following effects can be obtained.
（１）絶縁物のケーブル長手方向の流動が阻止されるの
で、寸法や精度が向上する。(1) Since the insulator is prevented from flowing in the longitudinal direction of the cable, dimensions and accuracy are improved.
（２）外観が購うので、商品価値が向上する。(2) Since people buy the product based on its appearance, the product value improves.
（３）冷却時に長手方向の分子を切断する力が発生しな
いので、電気性能が向上し、その結果信頼性が増す。(3) Electrical performance is improved because no force is generated to cut longitudinal molecules during cooling, resulting in increased reliability.
第１図は本発明の製造方法を説明するためのモールド型
接続部の断面図であり、そして第２図は本発明によって
製造されたモールド型接続部の断面図である。
１はケーブル導体、２は導体接続管、
３はケーブル絶縁体、４はモールド絶縁物、５は加熱加
圧部、５ａは加圧用さや、
５ｂは加熱金型、６はセパレータ、
７は同径化材料である。FIG. 1 is a sectional view of a molded connection part for explaining the manufacturing method of the present invention, and FIG. 2 is a sectional view of a molded connection part manufactured according to the invention. 1 is a cable conductor, 2 is a conductor connecting tube, 3 is a cable insulator, 4 is a molded insulator, 5 is a heating and pressurizing part, 5a is a pressurizing sheath, 5b is a heating mold, 6 is a separator, 7 is the same diameter It is a chemical material.
Claims (4)
てモールド型接続部を製造する際に、同径化材料を前記
モールド型接続部の加熱加圧部に施してその全体を同径
化ないし準同径化することを特徴とするモールド型接続
部の製造方法。(1) When manufacturing a molded joint by melting and integrating a molded insulator with a cable insulator, a diameter-sizing material is applied to the heated and pressurized part of the molded joint to make the entire diameter the same. A method of manufacturing a molded connection part characterized by making the diameter almost the same.
である特許請求の範囲第１項記載のモールド型接続部の
製造方法。(2) The method for manufacturing a molded connection part according to claim 1, wherein the diameter equalizing material is the same material as the molded insulator.
および再結晶化温度を有するが、応力の特異点をつくら
ない材料である特許請求の範囲第１項記載のモールド型
接続部の製造方法。(3) The molded connection part according to claim 1, wherein the diameter equalizing material is a material that has the same coefficient of thermal expansion and recrystallization temperature as the molded insulator, but does not create a stress singularity. Production method.
ることである特許請求の範囲第１項ないし第３項記載の
いずれかのモールド型接続部の製造方法。(4) The method for manufacturing a molded connection portion according to any one of claims 1 to 3, wherein the term “semi-uniform diameter” refers to making the slope of the heated and pressurized portion gentle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004848A JPS62163504A (en) | 1986-01-13 | 1986-01-13 | Manufacture of molded joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004848A JPS62163504A (en) | 1986-01-13 | 1986-01-13 | Manufacture of molded joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62163504A true JPS62163504A (en) | 1987-07-20 |
Family
ID=11595095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61004848A Pending JPS62163504A (en) | 1986-01-13 | 1986-01-13 | Manufacture of molded joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62163504A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035910A (en) * | 1983-08-03 | 1985-02-23 | 昭和電線電纜株式会社 | Method of forming cable connector |
-
1986
- 1986-01-13 JP JP61004848A patent/JPS62163504A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035910A (en) * | 1983-08-03 | 1985-02-23 | 昭和電線電纜株式会社 | Method of forming cable connector |
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