JPH04189512A - Manufacture of high-tension insulator - Google Patents
Manufacture of high-tension insulatorInfo
- Publication number
- JPH04189512A JPH04189512A JP32184690A JP32184690A JPH04189512A JP H04189512 A JPH04189512 A JP H04189512A JP 32184690 A JP32184690 A JP 32184690A JP 32184690 A JP32184690 A JP 32184690A JP H04189512 A JPH04189512 A JP H04189512A
- Authority
- JP
- Japan
- Prior art keywords
- core rod
- molds
- insulating cover
- cavity
- covered
- 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.)
- Granted
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims description 16
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 abstract description 9
- 238000004132 cross linking Methods 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 241000271566 Aves Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001137251 Corvidae Species 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
- B29K2083/005—LSR, i.e. liquid silicone rubbers, or derivatives thereof
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、架空送配電線に用いる高電圧碍子の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a high voltage insulator for use in overhead power transmission and distribution lines.
（従来の技術）
架空送配電線の電線間に取付けて、電線相互間の干渉を
防止する相間スペーサ用の高電圧碍子は、例えば、第５
図に示すように、ＦＲＰ製のコアロッド１に、複数の鍔
状のかさ２ａを有する合成樹脂製の絶縁カバー２を被覆
したもので、コアロッド１の両端には電線に取付けるた
めの金具３が固定されている。(Prior art) A high voltage insulator for an interphase spacer that is installed between electric wires of an overhead power transmission and distribution line to prevent interference between the electric wires is, for example, a fifth insulator.
As shown in the figure, a core rod 1 made of FRP is covered with an insulating cover 2 made of synthetic resin having a plurality of brim-like bulges 2a, and metal fittings 3 for attaching to electric wires are fixed to both ends of the core rod 1. has been done.
（発明が解決しようとする課題）
ところで、コアロッドに絶縁カバーを被覆するときには
、コアロッドを囲繞する一組の金型によって形成される
空間内に電気絶縁性の絶縁素材、例えば、シリコンエラ
ストマを圧送し、これを加熱硬化させて絶縁カバーを成
形している。(Problem to be Solved by the Invention) By the way, when covering the core rod with an insulating cover, an electrically insulating material such as silicone elastomer is pumped into a space formed by a set of molds surrounding the core rod. This is heated and cured to form an insulating cover.
このため、上記高電圧碍子よりも長い高電圧碍子、従っ
て、長尺のコアロッドに絶縁カバーを成形するときには
、その都度金型を取替える必要があり、取替作業が煩雑
で、種々の長さに対応しうる金型を用意しておかなけれ
ばならない等、高電圧碍子の製造コストが高（なるとい
う問題があった。For this reason, when molding an insulating cover on a high voltage insulator that is longer than the above-mentioned high voltage insulator, and therefore on a long core rod, it is necessary to replace the mold each time, making the replacement work complicated and making it possible to mold various lengths. There was a problem in that the manufacturing cost of high voltage insulators was high, as a compatible mold had to be prepared in advance.
（課題を解決するための手段及び作用）本発明は上記の
点に鑑みてなされたもので、金型を取替えることなく種
々の長さの高電圧碍子を簡単、且つ、安価に製造するこ
とができる高電圧碍子の製造方法を提供することを目的
とする。(Means and effects for solving the problems) The present invention has been made in view of the above points, and it is possible to easily and inexpensively manufacture high voltage insulators of various lengths without changing molds. The purpose of the present invention is to provide a method for manufacturing high-voltage insulators that can be manufactured using high-voltage insulators.
上記目的を達成するため本発明においては、コアロッド
と、該コアロッドを囲繞する一組の金型とによって形成
される所定形状のキャビティ内に電気絶縁性の絶縁素材
を供給し、前記コアロッドに絶縁カバーを被覆する高電
圧碍子の製造方法において、前記絶縁カバーを被覆した
後、前記一組の金型を開き、次いで、前記コアロッドを
軸方向に移動させた後、再度、前記一組の金型を閉じて
前記絶縁素材を圧入し、被覆された前記絶縁カバーに連
続して絶縁カバーを成形する構成としたものである。In order to achieve the above object, in the present invention, an electrically insulating material is supplied into a cavity having a predetermined shape formed by a core rod and a set of molds surrounding the core rod, and an insulating cover is provided on the core rod. In the method for manufacturing a high voltage insulator, after covering with the insulating cover, the set of molds is opened, and then, after the core rod is moved in the axial direction, the set of molds is opened again. The insulating material is closed, the insulating material is press-fitted, and the insulating cover is formed continuously on the covered insulating cover.
本発明方法においては、コアロッドに絶縁カバーを被覆
した後、更に、コアロッドを軸方向に移動させ、被覆さ
れた絶縁カバーに連続して絶縁カバーを成形するもので
ある。In the method of the present invention, after the core rod is coated with the insulating cover, the core rod is further moved in the axial direction, and the insulating cover is formed continuously on the coated insulating cover.
このように、同一素材を連続させて成形することから、
既に成形されている絶縁カバーと後から成形された絶縁
カバーとの接着強度は十分確保される。この場合、新た
な絶縁カバーの成形に先立って、既に成形された絶縁カ
バーとの境界面にプライマ処理を施し、これにより接着
強度を高めてもよい。In this way, by continuously molding the same material,
Sufficient adhesive strength is ensured between the already formed insulating cover and the later formed insulating cover. In this case, prior to molding a new insulating cover, a primer treatment may be applied to the interface with the already molded insulating cover to increase adhesive strength.
（実施例）
以下、本発明の一実施例を第１図乃至第４図に基づいて
詳細に説明する。(Example) Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 to 4.
本発明方法によって製造される高電圧碍子１０は、第２
図に示すように、構造上は従来の高電圧碍子と同一であ
るが、より長尺に形成されている。The high voltage insulator 10 manufactured by the method of the present invention has a second
As shown in the figure, the structure is the same as the conventional high voltage insulator, but it is formed longer.
この碍子ＩＯは、ＦＲＰ製のコアロッド１１に、シリコ
ンエラストマからなる絶縁カバー１２が被覆されると共
に、両端に金具１３．１３が固定されている。絶縁カバ
ー１２は、図示のように、複数の鍔状のかさ１２ａを有
する長さしのカバーである。この高電圧碍子１０におい
て、絶縁カバー１２は、第１図に示す成形装置２０によ
り成形される。In this insulator IO, a core rod 11 made of FRP is covered with an insulating cover 12 made of silicone elastomer, and metal fittings 13.13 are fixed to both ends. As shown in the figure, the insulating cover 12 is a long cover having a plurality of brim-like umbrellas 12a. In this high voltage insulator 10, the insulating cover 12 is molded by a molding device 20 shown in FIG.
成形装置２０は、ハウジング２１、ハウジング２１に支
持されたタイバー２２．２３、タイバー２２．２３に移
動自在に支持された取付盤２４゜２５、ハウジング２１
に設けて取付盤２４．２５を移動させるシリンダ２６，
２７、左金型２８及び右金型２９を備えている。The molding device 20 includes a housing 21, tie bars 22.23 supported by the housing 21, mounting plates 24.25 movably supported by the tie bars 22.23, and the housing 21.
a cylinder 26 for moving the mounting plate 24, 25;
27, a left mold 28 and a right mold 29.
そして、取付盤２４．２５には、互いに当接させて内部
にキャビティＣ（第３図参照）を形成すると共に、図示
しない加熱手段によって加熱（例えば、１２０℃）され
る左金型２８及び右金型２９が取付けられている。キャ
ビティＣは、長手方向の長さが１（第３図参照）であり
、この長さｌは絶縁カバー１２の長さしよりも短いＣＩ
＜Ｌ）。また、左金型２８の下部にはシリコンエラスト
マをキャビティＣ内に導入する導入路２８ａが形成され
、この導入路２８ａにはキャスティングヘッド３０が接
続されている。The mounting plates 24 and 25 have a left mold 28 and a right mold 28 which are brought into contact with each other to form a cavity C (see FIG. 3) inside, and which are heated (for example, to 120° C.) by a heating means (not shown). A mold 29 is attached. The length of the cavity C in the longitudinal direction is 1 (see FIG. 3), and this length l is shorter than the length of the insulating cover 12.
<L). Further, an introduction path 28a for introducing the silicon elastomer into the cavity C is formed in the lower part of the left mold 28, and a casting head 30 is connected to this introduction path 28a.
キャスティングヘッド３０は、供給パイプ３１を介して
タンク３２に接続されている。このタンク３２は、室温
において図示しない供給源から底部に供給されるシリコ
ンエラストマを貯留しており、上部にはタンク内に加圧
空気を供給する空気パイプ３２ａか接続されている。The casting head 30 is connected to a tank 32 via a supply pipe 31. This tank 32 stores silicone elastomer supplied at the bottom from a supply source (not shown) at room temperature, and is connected to the top with an air pipe 32a that supplies pressurized air into the tank.
ここで、供給パイプ３１及びタンク３２はジャケット３
３で被包されている。ジャケット３３は、成形装置２０
が作動を停止しているときに、内部−に冷却水を循環さ
せ、供給パイプ３１及びタンク３２内の温度を一５°Ｃ
以下に保持する。Here, the supply pipe 31 and the tank 32 are connected to the jacket 3
It is covered by 3. The jacket 33 is attached to the molding device 20
When the system is not operating, cooling water is circulated internally to keep the temperature inside the supply pipe 31 and tank 32 at -5°C.
Keep below.
成形装置２０は、以上のように構成され、この成形装置
２０を用いて絶縁カバー１２をコアロッド１１に被覆し
、高電圧碍子１０を製造する本発明方法を以下に説明す
る。The molding device 20 is configured as described above, and the method of the present invention for manufacturing the high voltage insulator 10 by covering the core rod 11 with the insulating cover 12 using the molding device 20 will be described below.
先ず、前記加熱手段により両全型２８．２９の加熱を開
始すると共に、シリンダ２６．２７で取付盤２４．２５
を、タイバー２２．２３に沿って第１図に示したように
後退させて型開きする。First, the heating means starts heating both molds 28.29, and the cylinder 26.27 starts heating the mounting plates 24.25.
are moved back along the tie bars 22 and 23 as shown in FIG. 1 to open the mold.
次いで、コアロッド１１の両端にハンドリング用の支持
金具１１ａ、ｌｌａを取付け、一方、例えば、上側の支
持金具１１ａを持って、コアロッド１１を左右の金型２
８，２９の間に配置する。Next, support fittings 11a and lla for handling are attached to both ends of the core rod 11, and on the other hand, for example, holding the upper support fitting 11a, the core rod 11 is inserted into the left and right molds 2.
Place it between 8 and 29.
このとき、コアロット１１は、絶縁カバー１２が上半分
に成形されるように、上半側を左右の金型２８．２９の
間に配置する。At this time, the upper half of the core rod 11 is placed between the left and right molds 28 and 29 so that the insulating cover 12 is molded in the upper half.
次に、シリンダ２６．２７で取付盤２４．２５をタイバ
ー２２’、２３に沿って前進させ、第３図に示すように
、左右の金型２８，２９を型締めする。これにより、左
右の金型２８，２９とコアロット１１との間には、絶縁
カバー１２を成形するキャビティＣが形成される。Next, the cylinders 26, 27 move the mounting plates 24, 25 forward along the tie bars 22', 23, and as shown in FIG. 3, the left and right molds 28, 29 are clamped. As a result, a cavity C for molding the insulating cover 12 is formed between the left and right molds 28, 29 and the core rod 11.
しかる後、空気パイプ３２ａ（第１図参照）からタンク
３２内に圧縮空気を圧送し、タンク３２内のシリコンエ
ラストマを、供給パイプ３１からキャスティングヘッド
３０．導入路２８ａを経てキャビティＣ内へ導入する。Thereafter, compressed air is forced into the tank 32 from the air pipe 32a (see FIG. 1), and the silicone elastomer in the tank 32 is transferred from the supply pipe 31 to the casting head 30. It is introduced into the cavity C via the introduction path 28a.
このとき、シリコンエラストマは、下方からキャビティ
Ｃ内に導入され、含まれている気泡が上方へ排出される
ので、成形される絶縁カバー１２内に気泡に起因する空
隙が形成されることがない。At this time, the silicone elastomer is introduced into the cavity C from below, and the air bubbles contained therein are discharged upward, so that no voids due to air bubbles are formed in the insulating cover 12 to be molded.
かくしてキャビティＣ内に供給されたシリコンエラスト
マは、両金型２８，２９からの熱によって所定時間、例
えば、１５分加熱され、かかる加熱により架橋反応を起
こして硬化する。これにより、コアロッド１１の上半分
に絶縁カバー１２か成形される。The silicone elastomer thus supplied into the cavity C is heated by heat from both the molds 28 and 29 for a predetermined time, for example, 15 minutes, and this heating causes a crosslinking reaction and hardens it. As a result, the insulating cover 12 is formed on the upper half of the core rod 11.
次いで、シリンダ２６．２７を作動させて取付盤２４．
２５を後退させ、第１図に示したように、再度、金型２
８，２９を型開きする。The cylinders 26.27 are then actuated to release the mounting plate 24.
25, and as shown in FIG.
Open the mold of 8 and 29.
次に、前記一方の支持金具１１ａを持って、コアロッド
１１を金型２８，２９から外し、キャビティＣの長さｌ
たけ上方へ引き上げる。Next, holding the one supporting metal fitting 11a, remove the core rod 11 from the molds 28 and 29, and make the length l of the cavity C.
Pull it up high.
しかる後、シリンダ２６．２７を作動させて第４図に示
すように、金型２８，２９を型締めし、前記と同様にし
てキャビティＣ内にシリコンエラストマを導入し、加熱
硬化させてコアロッド１１の下半分に絶縁カバー１２を
成形する。Thereafter, the cylinders 26 and 27 are operated to clamp the molds 28 and 29 as shown in FIG. An insulating cover 12 is formed on the lower half of the .
次いで、金型２Ｂ、２９を開き、一方の支持金具１１ａ
を持って絶縁カバー１２が被覆されたコアロッド１１を
成形装置２０から取出す。Next, the molds 2B and 29 are opened, and one of the supporting metal fittings 11a is
The core rod 11 covered with the insulating cover 12 is taken out from the molding device 20 by holding it.
そして、絶縁カバー１２が被覆されていないコアロッド
１１の両端に金具１３．１３を固定し、第２図に示した
高電圧碍子１０が製造される。Then, metal fittings 13.13 are fixed to both ends of the core rod 11 which is not covered with the insulating cover 12, and the high voltage insulator 10 shown in FIG. 2 is manufactured.
ここで、以上のようにして成形された絶縁カバー１２は
、上半分と下半分の境界面も良好に接着し、十分な接着
強度が確保されていた。しかも、絶縁カバー１２は、鳥
、特にカラスがつついても損傷しない程度に十分に熱硬
化していた。Here, in the insulating cover 12 formed as described above, the interface between the upper half and the lower half was also well bonded, and sufficient adhesive strength was ensured. In addition, the insulating cover 12 was sufficiently heat-cured to the extent that it would not be damaged even if birds, especially crows, pecked it.
本発明方法によって製造した高電圧碍子１０を、既設の
架空送配電線の電線間に３年間取付け、鳥からの損傷に
ついて調へたところ、殆ど損傷は見られなかった。The high voltage insulator 10 manufactured by the method of the present invention was installed between the wires of an existing overhead power transmission and distribution line for three years, and when it was examined for damage from birds, almost no damage was found.
尚、上記実施例においては、絶縁カバーはコアロッドに
被覆したが、コアロッドに替えてＦＲＰ製のパイプとし
てもよいことは言うまでもない。In the above embodiment, the core rod is covered with the insulating cover, but it goes without saying that the core rod may be replaced with an FRP pipe.
また、コアロッドは、上半分に絶縁カバーを成形した後
、コアロッドを引き上げて下半分に絶縁カバーを成形し
たが、この逆に、コアロッドの下半分に絶縁カバーを成
形した後、コアロッドを引き下げて上半分に絶縁カバー
を成形してもよい。In addition, after molding an insulating cover on the upper half of the core rod, the core rod is pulled up and an insulating cover is molded on the lower half.However, conversely, after molding an insulating cover on the lower half of the core rod, the core rod is pulled down and raised. An insulating cover may be formed in half.
（発明の効果）
以上の説明で明らかなように、本発明の高電圧碍子の製
造方法によれば、コアロッドに絶縁カバーを被覆した後
、一組の金型を開き、次いで、コアロッドを軸方向に移
動させた後、再度、一組の金型を閉じて絶縁素材を圧入
し、被覆された絶縁カバーに連続して絶縁カバーを成形
するので、種々の長さの高電圧碍子を金型を取替えるこ
となく簡単、且つ、安価に製造することができる。(Effects of the Invention) As is clear from the above explanation, according to the method for manufacturing a high voltage insulator of the present invention, after covering the core rod with an insulating cover, a set of molds is opened, and then the core rod is inserted in the axial direction. After moving the insulators to the mold, the set of molds is closed again, the insulating material is press-fitted, and the insulating cover is continuously molded onto the coated insulating cover. It can be manufactured simply and at low cost without being replaced.
第１図乃至第４図は本発明の一実施例を示すもので、第
１図はコアロッドに絶縁カバーを成形する成形装置の概
略構成正面図、第２図は製造される高電圧碍子の正面図
、第３図はコアロッドの上半分に絶縁カバーを成形する
要部正面図、第４図はコアロッドの下半分に絶縁カバー
を成形する要部正面図、第５図は従来の方法によって製
造された高電圧碍子の正面図である。
１０・・・高電圧碍子、１２・・・絶縁カバー、２０コ
・・成形装置、２１・・・ハウジング、２４．２５・・
・取付盤、２８・・・左金型、２９・・・右金型、Ｃ・
・・キャビティ。
第４図
第５図Figures 1 to 4 show one embodiment of the present invention. Figure 1 is a schematic front view of a molding device for molding an insulating cover onto a core rod, and Figure 2 is a front view of a high voltage insulator to be manufactured. Figure 3 is a front view of the main part of forming the insulating cover on the upper half of the core rod, Fig. 4 is a front view of the main part of forming the insulating cover on the lower half of the core rod, and Fig. 5 is a front view of the main part of forming the insulating cover on the lower half of the core rod. FIG. 3 is a front view of the high voltage insulator. 10... High voltage insulator, 12... Insulating cover, 20... Molding device, 21... Housing, 24.25...
・Mounting board, 28...Left mold, 29...Right mold, C.
··cavity. Figure 4 Figure 5
Claims (1)
よって形成される所定形状のキャビティ内に電気絶縁性
の絶縁素材を供給し、前記コアロッドに絶縁カバーを被
覆する高電圧碍子の製造方法において、前記コアロッド
に絶縁カバーを被覆した後、前記一組の金型を開き、次
いで、前記コアロッドを軸方向に移動させた後、再度、
前記一組の金型を閉じて前記絶縁素材を圧入し、被覆さ
れた前記絶縁カバーに連続して絶縁カバーを成形するこ
とを特徴とする高電圧碍子の製造方法。A method for manufacturing a high-voltage insulator, in which an electrically insulating material is supplied into a cavity of a predetermined shape formed by a core rod and a set of molds surrounding the core rod, and the core rod is covered with an insulating cover, After covering the core rod with an insulating cover, the set of molds is opened, and then, after moving the core rod in the axial direction,
A method of manufacturing a high voltage insulator, comprising: closing the set of molds, press-fitting the insulating material, and molding an insulating cover continuously onto the covered insulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32184690A JP2915558B2 (en) | 1990-11-26 | 1990-11-26 | Manufacturing method of high voltage insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32184690A JP2915558B2 (en) | 1990-11-26 | 1990-11-26 | Manufacturing method of high voltage insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04189512A true JPH04189512A (en) | 1992-07-08 |
| JP2915558B2 JP2915558B2 (en) | 1999-07-05 |
Family
ID=18137080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32184690A Expired - Lifetime JP2915558B2 (en) | 1990-11-26 | 1990-11-26 | Manufacturing method of high voltage insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2915558B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008690A1 (en) * | 2003-07-21 | 2005-01-27 | Edi International, Inc. | Insulator integrated with clamp |
-
1990
- 1990-11-26 JP JP32184690A patent/JP2915558B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008690A1 (en) * | 2003-07-21 | 2005-01-27 | Edi International, Inc. | Insulator integrated with clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2915558B2 (en) | 1999-07-05 |
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