JPS6348155B2 - - Google Patents
Info
- Publication number
- JPS6348155B2 JPS6348155B2 JP57229571A JP22957182A JPS6348155B2 JP S6348155 B2 JPS6348155 B2 JP S6348155B2 JP 57229571 A JP57229571 A JP 57229571A JP 22957182 A JP22957182 A JP 22957182A JP S6348155 B2 JPS6348155 B2 JP S6348155B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- joint
- tube
- cooling
- extrusion
- 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
Links
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004132 cross linking Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 239000012212 insulator Substances 0.000 description 9
- 229920000098 polyolefin Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
【発明の詳細な説明】
本発明は、プラスチツク絶縁ケーブル用押出モ
ールドジヨイントの金型装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold apparatus for an extrusion mold joint for plastic insulated cables.
架橋ポリエチレン絶縁ケーブル（以下「CVケ
ーブル」という。）で代表されるプラスチツク絶
縁ケーブルは、6Kv〜275Kv線路に適用されてい
るが、適用線路長が長くなると直線接続部が必要
となる。275Kv線路に適用するCVケーブルの直
線接続部としては、電気性能、信頼性の観点から
ケーブル絶縁体と同材質のポリオレフイン絶縁体
を接続すべき個所に金型を用いて押出充填するこ
とで形成される押出モールドジヨイントが適切で
ある。このようなモールドジヨイントは、押出装
置を所定温度に上昇させ、所定圧力と所定流量に
より溶融ポリオレフイン絶縁体を押出して形成さ
れるが、この押出に用いる金型は接続部の成型を
安定して行うことのできるものが要求される。し
かしながら、従来の金型によればケーブルの変形
が生じ易く接続部の成型が不安定となる傾向が大
である。 Plastic insulated cables, typified by cross-linked polyethylene insulated cables (hereinafter referred to as "CV cables"), are applied to lines from 6Kv to 275Kv, but as the length of the line increases, straight connections become necessary. For straight connections of CV cables applied to 275Kv lines, from the viewpoint of electrical performance and reliability, polyolefin insulators made of the same material as the cable insulators are extruded and filled at the connection points using a mold. An extrusion mold joint is suitable. Such mold joints are formed by raising an extrusion device to a predetermined temperature and extruding molten polyolefin insulator at a predetermined pressure and a predetermined flow rate, but the mold used for this extrusion is designed to stably mold the joint. What is required is something that can be done. However, with conventional molds, the cable tends to be easily deformed and the molding of the connection part tends to be unstable.
本発明の目的は、押出装置と直結して使用さ
れ、溶融ポリオレフイン絶縁体の押出成形による
モールドジヨイントの製作を容易で安定なものと
することのできる金型装置を提供することにあ
る。 An object of the present invention is to provide a mold device that is used in direct connection with an extrusion device and can easily and stably manufacture a mold joint by extrusion molding of a molten polyolefin insulator.
本発明の要旨は、内面にテフロン被覆を有する
押出成形用金型にケーブル変形を防止するための
圧力補償装置、及び冷却用二ツ割カラーを設け、
かつ金型を二重管タイプとし、内管と外管との間
に遠赤外線ヒータもしくは電熱ヒータを所定間隔
で配置し、加熱時、特に架橋時には金型の中央を
所定温度に加熱し、所定時間経過後、金型の端部
の方向へ加熱を進めていくようにし、さらに、架
橋後、金型のガス加圧孔よりガス（空気、N2ガ
ス）、液体（シリコン油など）を所定圧力で直接
加圧して冷却するごとく構成した点である。 The gist of the present invention is to provide an extrusion mold having a Teflon coating on the inner surface with a pressure compensator for preventing cable deformation and a two-split collar for cooling.
In addition, the mold is a double-tube type, and far-infrared heaters or electric heaters are placed between the inner tube and the outer tube at a predetermined interval, and during heating, especially during crosslinking, the center of the mold is heated to a predetermined temperature, and the mold is heated to a predetermined temperature. After a certain amount of time has elapsed, heating is continued toward the edges of the mold, and after crosslinking, gas (air, N2 gas) and liquid (silicon oil, etc.) are supplied through the gas pressurization holes in the mold. The point is that it is configured so that it can be cooled by applying pressure directly.
以下図面にもとづき本発明を説明する。 The present invention will be explained below based on the drawings.
第１図は一部断面で示す本発明の一実施例であ
り、本発明の金型は外管１８と内管１７とで成つ
ており、特に、内管１７の内面はクロムメツキ処
理後テフロン焼付層１４が施されている。外管１
８と内管１７との間には、遠赤外線ヒータ１３
（もしくは電熱ヒータ）が所定間隔で配置される。
金型の両端には、冷却用二ツ割カラー１０と圧力
補償装置８が設けられている。金型内管１７と冷
却用二ツ割カラー１０との間には、耐熱性ゴムま
たはプラスチツクチユーブ４が配置されている。 FIG. 1 shows an embodiment of the present invention partially shown in cross section. The mold of the present invention is composed of an outer tube 18 and an inner tube 17. In particular, the inner surface of the inner tube 17 is chrome-plated and then baked with Teflon. Layer 14 is applied. Outer tube 1
8 and the inner tube 17, a far infrared heater 13 is provided.
(or electric heaters) are arranged at predetermined intervals.
A two-split cooling collar 10 and a pressure compensator 8 are provided at both ends of the mold. A heat-resistant rubber or plastic tube 4 is arranged between the mold inner tube 17 and the two-piece cooling collar 10.
CVケブル２０の導体を導体接続管１で接続し、
内部半導電層２を施し、押出装置と直結された注
入口５よりポリオレフイン絶縁体３を充填する。 Connect the conductor of the CV cable 20 with the conductor connection pipe 1,
An internal semiconductive layer 2 is applied and a polyolefin insulator 3 is filled through an injection port 5 directly connected to the extrusion device.
押出時には遠赤外線ヒータ１３により同時全面
加熱され所定温度に保持されている。所定温度に
加熱されたポリオレフイン絶縁体３が注入口５を
通り金型内に充填され、オーバーフロー孔１２，
１５から出る時に金型内圧が所定圧力より大きく
なると、圧力補償装置８と油圧パワーユニツト９
により一定圧力になるよう冷却用二ツ割カラー１
０と圧力補償装置８が移動する。この時、冷却用
二ツ割カラー１０には、冷却供給装置１１よりガ
スもしくは液体が流され、二ツ割カラー１０を経
て噴出孔１９よりケーブル２０の外周へ噴出し、
ケーブル温度を一定に保持する。充填が完了後、
ポリオレフイン絶縁体３を架橋するため、遠赤外
線ヒータ１３により架橋温度に昇温する。この場
合、遠赤外線ヒータ１３の加熱は、最初金型の中
央を架橋温度にし、所定時間経過後、金型の端部
の方向へ徐々に加熱を進めて金型の端部が架橋温
度になるようにして、所定時間全面架橋温度にす
ることにより加熱効率を向上させている。 During extrusion, the entire surface is simultaneously heated by a far-infrared heater 13 and maintained at a predetermined temperature. Polyolefin insulator 3 heated to a predetermined temperature is filled into the mold through injection port 5, and overflow hole 12,
When the mold internal pressure becomes higher than the predetermined pressure when exiting from the mold 15, the pressure compensator 8 and the hydraulic power unit 9
Two-split collar 1 for cooling to maintain a constant pressure.
0 and the pressure compensator 8 moves. At this time, gas or liquid is flowed from the cooling supply device 11 to the two-split cooling collar 10, and is ejected from the jet hole 19 to the outer circumference of the cable 20 through the two-split collar 10.
Maintains constant cable temperature. After filling is completed,
In order to crosslink the polyolefin insulator 3, the temperature is raised to a crosslinking temperature using a far infrared heater 13. In this case, the far-infrared heater 13 first heats the center of the mold to the crosslinking temperature, and after a predetermined period of time, heats gradually toward the ends of the mold so that the ends of the mold reach the crosslinking temperature. In this way, heating efficiency is improved by bringing the entire surface to the crosslinking temperature for a predetermined period of time.
架橋時にはオーバーフロー孔１２，１５は盲栓
がされているからポリオレフイン絶縁体３の熱膨
張により金型内圧が高くなるが、この時にも所定
圧力に金型内を保つように圧力補償装置８が動作
する。架橋後、金型内を加圧孔６よりガスもしく
は液体で所定圧力に直接加圧しつつ冷却する。 Since the overflow holes 12 and 15 are blind plugged during crosslinking, the internal pressure of the mold increases due to thermal expansion of the polyolefin insulator 3, but the pressure compensator 8 operates to maintain the inside of the mold at a predetermined pressure even at this time. do. After crosslinking, the inside of the mold is cooled while being directly pressurized to a predetermined pressure with gas or liquid through the pressurizing holes 6.
このような金型装置を使用することにより電気
的性質のすぐれた押出モールドジヨイントを容易
に製造出来ると共に、ケーブル変形が防止され
る。更に、上述のように本発明の金型装置によれ
ば、その加熱効率は著しく高くなり、極めて経済
的である。 By using such a mold apparatus, an extrusion mold joint with excellent electrical properties can be easily manufactured, and cable deformation can be prevented. Furthermore, as described above, the mold apparatus of the present invention has significantly higher heating efficiency and is extremely economical.
第１図は本発明の一実施例の部分断面図であ
る。
１：導体接続管、２：内部半導電層、３：絶縁
体、４：耐熱性ゴムまたはプラスチツクチユー
ブ、５：絶縁材料注入口、６：加圧孔、８：圧力
補償装置、９：油圧パワーユニツト、１０：冷却
用二ツ割カラー、１１：冷却供給装置、１２，１
５：オーバーフロー孔、１３：遠赤外線または電
熱ヒータ、１４：テフロン焼付層、１６：ラム用
ヒータ、１７：内管、１８：外管、１９：噴出
孔、２０：CVケーブル。
FIG. 1 is a partial cross-sectional view of one embodiment of the present invention. 1: Conductor connection tube, 2: Internal semiconductive layer, 3: Insulator, 4: Heat-resistant rubber or plastic tube, 5: Insulating material injection port, 6: Pressure hole, 8: Pressure compensator, 9: Hydraulic power Unit, 10: Two-split collar for cooling, 11: Cooling supply device, 12,1
5: Overflow hole, 13: Far infrared rays or electric heater, 14: Teflon baking layer, 16: Ram heater, 17: Inner tube, 18: Outer tube, 19: Ejection hole, 20: CV cable.
Claims (1)
管から或る二重管をもつて形成された金型と、内
管と外管の間において金型に対する加熱を中央部
から端部の方向へ順次進められるように分布して
配置された複数の加熱手段と、絶縁材料による金
型内圧力を一定に維持する圧力補償装置と、ケー
ブル温度を一定に維持するための冷却手段と、絶
縁材料の架橋後にジヨイントを流体により直接加
圧しつつ冷却する手段とを備えたことを特徴とす
る押出モールドジヨイント用金型装置。1 A mold is formed with a certain double tube from an inner tube and an outer tube that have a Teflon baking layer on the inner surface, and the heating of the mold is applied from the center to the end between the inner tube and the outer tube. A plurality of heating means distributed and arranged so that they can be heated in sequence, a pressure compensator that maintains the pressure inside the mold constant due to the insulating material, a cooling means that maintains the cable temperature constant, and the insulating material A mold device for an extrusion mold joint, comprising a means for cooling the joint while directly pressurizing the joint with a fluid after crosslinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22957182A JPS59117081A (en) | 1982-12-24 | 1982-12-24 | Molding machine for extrusion molding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22957182A JPS59117081A (en) | 1982-12-24 | 1982-12-24 | Molding machine for extrusion molding joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59117081A JPS59117081A (en) | 1984-07-06 |
| JPS6348155B2 true JPS6348155B2 (en) | 1988-09-27 |
Family
ID=16894257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22957182A Granted JPS59117081A (en) | 1982-12-24 | 1982-12-24 | Molding machine for extrusion molding joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59117081A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2970956B2 (en) * | 1991-03-25 | 1999-11-02 | 昭和電線電纜株式会社 | Method of forming cable connection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5634993A (en) * | 1979-06-22 | 1981-04-07 | Whitehouse Ronald C N | Fluid circulation type driver |
| JPS5654675A (en) * | 1979-10-09 | 1981-05-14 | Toshiba Corp | Magnetic tape device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922709Y2 (en) * | 1980-03-31 | 1984-07-06 | 昭和電線電纜株式会社 | Cable connection mold |
-
1982
- 1982-12-24 JP JP22957182A patent/JPS59117081A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5634993A (en) * | 1979-06-22 | 1981-04-07 | Whitehouse Ronald C N | Fluid circulation type driver |
| JPS5654675A (en) * | 1979-10-09 | 1981-05-14 | Toshiba Corp | Magnetic tape device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59117081A (en) | 1984-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4459250A (en) | Process and apparatus of extrusion molding rubbers and thermal cross-linking synthetic resins | |
| JPS6348155B2 (en) | ||
| JPS6362971B2 (en) | ||
| JPH0137834B2 (en) | ||
| JPS6215985Y2 (en) | ||
| FI60624C (en) | FOERFARANDE FOER RETABLERING AV ISOLERINGEN VID SKARVNING AV KABLAR SPECIELLT HOEGSPAENNINGSKABLAR | |
| JPH0227512Y2 (en) | ||
| JPS6221524A (en) | Manufacture of synthetic resin tube bundle for heat exchanger | |
| JPS5846806B2 (en) | Heat recoverable sleeve with fusible liner | |
| JPS6031197Y2 (en) | Molding equipment for plastic insulated cable connections | |
| FI66999C (en) | SAETT VIDAR SCARVES AV EN CABLE WITH ISOLERING AV TVAERBUNDEN POYETEN ELLER ANNAN TVAERBUNDEN POLYMER | |
| JPS589515A (en) | Method of forming connector of insulated cable | |
| JP3012515B2 (en) | CV cable insulation connection method | |
| KR910003868Y1 (en) | Sealing device of connecting part for insulated wire | |
| JPH0140475B2 (en) | ||
| JPS592829A (en) | Continuous pressure vulcanizer | |
| JPS6131596B2 (en) | ||
| JPS5857278A (en) | Method of producing plastic insulated power cable connector | |
| JPS6023476B2 (en) | Method for forming connections of insulated cables | |
| JPS5933630Y2 (en) | Continuous cross-linking equipment for long rubber/plastic bodies | |
| JP3242463B2 (en) | Method and apparatus for manufacturing resin tube | |
| JPH0568837B2 (en) | ||
| JPS5951686B2 (en) | Cross-linked tube for long rubber and plastic bodies | |
| JPS5859030A (en) | Method of forming power cable joined section insulated with rubber or plastics | |
| JP3012514B2 (en) | CV cable insulation connection method |