JPH0210550B2 - - Google Patents
Info
- Publication number
- JPH0210550B2 JPH0210550B2 JP60084712A JP8471285A JPH0210550B2 JP H0210550 B2 JPH0210550 B2 JP H0210550B2 JP 60084712 A JP60084712 A JP 60084712A JP 8471285 A JP8471285 A JP 8471285A JP H0210550 B2 JPH0210550 B2 JP H0210550B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- extrusion device
- extrusion
- connection part
- molding
- 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 - Lifetime
Links
- 238000001125 extrusion Methods 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 229920000098 polyolefin Polymers 0.000 description 4
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection 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】
［発明の背景と目的］
本発明は、架橋ポリエチレン絶縁ビニルシース
ケーブル（以下CVケーブルと云う）用の接続部
を押出し装置を用いて成型する場合に特に適した
押出装置に関する。Detailed Description of the Invention [Background and Objectives of the Invention] The present invention relates to an extrusion device particularly suitable for molding a connection part for a crosslinked polyethylene insulated vinyl sheath cable (hereinafter referred to as CV cable) using an extrusion device. .
CVケーブルは、保守管理が容易であることか
ら、154KV系統の長距離線路あるいは275KVの
発変電所構内の連絡線にすでに広く用いられてお
り、更には275KVの長距離線路に対しても適用
が計画されている。このように、275KV以上の
長距離線路にCVケーブルを用いる場合には、そ
の直線接続部はケーブルの製造技術を現場に適用
した押出モールド型となるのが普通である。押出
モールド接続部は、押出装置とモールド金型とを
直結して製作されるが、押出し絶縁体に異物の混
入があると、接続部自体の特性に悪影響があり、
このような異物混入は避けるべきである。このよ
うな異物の混入は、注入絶縁材料の厳選および押
出機におけるスクリーンとによりかなり防止出来
るが、まだ充分とは言えない。 Because CV cables are easy to maintain and manage, they are already widely used for long-distance lines in 154KV systems and connection lines within 275KV power stations and substations, and can also be applied to long-distance lines of 275KV. It is planned. In this way, when CV cables are used for long-distance lines of 275KV or higher, the straight connections are usually extrusion molded using cable manufacturing technology applied on-site. Extrusion mold connections are manufactured by directly connecting an extrusion device and a mold die, but if foreign matter is mixed into the extruded insulator, the characteristics of the connection itself will be adversely affected.
Such contamination with foreign matter should be avoided. Although such contamination of foreign substances can be considerably prevented by careful selection of the insulating material to be injected and by using a screen in the extruder, this is still not sufficient.
本発明の目的は、押出装置から押出される例え
ばポリオレフインのような溶融絶縁体がモールド
金型に充填される前に異物の混入を防止するよう
になつた押出装置を提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide an extrusion device that prevents foreign matter from entering the molten insulator, such as polyolefin, extruded from the extrusion device before it is filled into a mold.
［発明の概要］
本発明によれば、押出装置のスクリユー出口お
よび押出装置と金型との直結部近傍にスクリーン
メツシユとブレーカプレートからなる異物混入防
止機構を夫々設けることにより上記目的を達成す
る。[Summary of the Invention] According to the present invention, the above object is achieved by providing a foreign matter prevention mechanism consisting of a screen mesh and a breaker plate in the vicinity of the screw outlet of the extrusion device and the direct connection between the extrusion device and the mold. .
［実施例］
第１図は、本発明の一実施例を示す概略図であ
る。本発明の押出装置は駆動部１、樹脂補給部
２、スクリユー３、スクリーンメツシユ４、ブレ
ーカプレート５およびクロスヘツド６から成り、
クロスヘツド６は連結管７により接続部成型用金
型１０に接続する。連結管７と金型１０との連結
部近傍には、スクリーンメツシユおよびブレーカ
プレートからなるスクリーン部９が設けてあり、
使用に当つてはクロスヘツド６で押出し前に樹脂
の空出しを行い、異物混入のないことを確認した
上で金型１０に溶融ポリオレフインの押出しを行
う。[Example] FIG. 1 is a schematic diagram showing an example of the present invention. The extrusion device of the present invention consists of a drive section 1, a resin supply section 2, a screw 3, a screen mesh 4, a breaker plate 5, and a crosshead 6.
The crosshead 6 is connected by a connecting pipe 7 to a mold 10 for molding a joint. A screen portion 9 consisting of a screen mesh and a breaker plate is provided near the connecting portion between the connecting pipe 7 and the mold 10.
In use, the resin is evacuated using the crosshead 6 before extrusion, and after confirming that no foreign matter has been mixed in, the molten polyolefin is extruded into the mold 10.
この押出装置は、100℃〜160℃の所定温度に加
熱され、樹脂補給部２からスクリユー３によりポ
リオレフインを溶融混練し、スクリーンメツシユ
４とブレーカプレート５を通して押出されるが、
連結部７にも加熱部が設けられて全長にわたり所
定温度となるようにされている。金型１０と連結
管７との間のスクリーン部９は、金属製金網で40
〜2000メツシユの網目を有するスクリーンを複数
取付け、更に所定形状の穴を有するブレーカプレ
ートを設けて形成されている。このようにするこ
とにより、連結管あるいはクロスヘツドで生じる
異物の樹脂への混入は、ほぼ完全に防止出来る。
なお、１１はCVケーブルを示し、１２は溶融樹
脂を示している。 This extrusion device is heated to a predetermined temperature of 100°C to 160°C, melts and kneads polyolefin from a resin replenishing section 2 with a screw 3, and extrudes it through a screen mesh 4 and a breaker plate 5.
The connecting portion 7 is also provided with a heating portion to maintain a predetermined temperature over the entire length. The screen portion 9 between the mold 10 and the connecting pipe 7 is made of metal wire mesh with a diameter of 40 mm.
It is formed by attaching a plurality of screens each having a mesh size of ~2000 meshes, and further providing a breaker plate with holes of a predetermined shape. By doing this, it is possible to almost completely prevent foreign matter from entering the resin from the connecting pipe or crosshead.
Note that 11 indicates a CV cable, and 12 indicates a molten resin.
［発明の効果］
本発明によれば、押出機構とケーブル接続部成
型用金型との間に二重のスクリーン部が形成され
ることになり、押出しポリオレフインに対する異
物レベルを極端に低下させることが出来、電気特
性のすぐれた接続部を製作出来る。更に、スクリ
ーン部の構造は、極めて簡単であるから装置自体
が極めて経済的であるばかりか、その取扱いがき
わめて容易でもある。[Effects of the Invention] According to the present invention, a double screen portion is formed between the extrusion mechanism and the mold for molding the cable connection portion, and the level of foreign substances in the extruded polyolefin can be extremely reduced. It is possible to manufacture connections with excellent electrical characteristics. Furthermore, since the structure of the screen portion is extremely simple, the device itself is not only extremely economical, but also extremely easy to handle.
第１図は本発明の一実施例の概略図である。
１：駆動部、２：樹脂補給部、３：スクリユ
ー、４：スクリーンメツシユ、５：ブレーカプレ
ート、６：クロスヘツド、７：連結管、９：スク
リーン部、１０：接続部成型用金型、１１：CV
ケーブル。
FIG. 1 is a schematic diagram of an embodiment of the present invention. 1: Drive part, 2: Resin supply part, 3: Screw, 4: Screen mesh, 5: Breaker plate, 6: Cross head, 7: Connecting pipe, 9: Screen part, 10: Mold for forming the connection part, 11 :CV
cable.
Claims (1)
ロスヘツド、このクロスヘツドをケーブル接続部
成型用金型に接続する連絡管より成るケーブル接
続部成型用押出装置において、上記押出機構先端
部、および上記連結管と金型の接続部近傍に夫々
スクリーンメツシユおよびブレーカプレートより
成る異物混入防止手段を設けたことを特徴とする
ケーブル接続部成型用押出装置。 ２ 前記接続部近傍のスクリーンメツシユは40〜
2000メツシユであることを特徴とする特許請求の
範囲第１項記載のケーブル接続部成型用押出装
置。[Scope of Claims] 1. An extrusion device for molding a cable connection part comprising an extrusion mechanism, a crosshead connected to the tip of the extrusion mechanism, and a communication pipe connecting the crosshead to a mold for molding the cable connection part, wherein the extrusion mechanism has a tip end thereof. An extrusion device for molding a cable connection part, characterized in that foreign matter prevention means consisting of a screen mesh and a breaker plate are provided in the vicinity of the connection part between the connecting pipe and the mold, respectively. 2 The screen mesh near the connection part is 40~
An extrusion device for molding a cable connection portion according to claim 1, characterized in that the extrusion device is a 2000 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60084712A JPS61243675A (en) | 1985-04-19 | 1985-04-19 | Extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60084712A JPS61243675A (en) | 1985-04-19 | 1985-04-19 | Extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61243675A JPS61243675A (en) | 1986-10-29 |
| JPH0210550B2 true JPH0210550B2 (en) | 1990-03-08 |
Family
ID=13838274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60084712A Granted JPS61243675A (en) | 1985-04-19 | 1985-04-19 | Extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61243675A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1265484B1 (en) * | 1993-12-31 | 1996-11-22 | Lager Etablissement | RECYCLING PLANT OF HETEROGENOUS PLASTIC MATERIALS FOR COATING PRODUCTS IN METALLIC MATERIAL |
| CN100457690C (en) * | 2007-03-05 | 2009-02-04 | 同济大学 | Method for producing agriculture fertilizer by sludge in water treatment plant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141182A (en) * | 1983-01-31 | 1984-08-13 | 三菱電線工業株式会社 | Method of forming connector of rubber and plastic insulated power cable |
-
1985
- 1985-04-19 JP JP60084712A patent/JPS61243675A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141182A (en) * | 1983-01-31 | 1984-08-13 | 三菱電線工業株式会社 | Method of forming connector of rubber and plastic insulated power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61243675A (en) | 1986-10-29 |
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