JPH05266745A - Injection molding method of resin molded body - Google Patents

Abstract

PURPOSE:To eliminate the unevenness of filler distribution condition of every product to highly stabilize the quality by measuring the resin composition for one insulator body and injecting the measured composition in a die after being mixed with a prescribed amount of hardening agent. CONSTITUTION:For an amount of one portion of an insulating molded body, resin-filler mixture in a mixed resin storage tank 221 is measured and supplied by a measuring station 18. After a turn-frame 16 is rotated and a prescribed amount of a hardening agent is added to a mixing pot 17 from a hardening agent storage tank 242 by a stirring station 19 to stir and mix with the resin- filler mixture. After the turn-frame 16 is rotated and a hatch 241 at a hanging wire end of a crane 24 is attached to the mixing pot 17 by an injection station end 201 and the mixing pot 17 is located right above a vacuum chamber 22. The material in the mixing pot 17 is injected in a die 14 set in the vacuum chamber 22.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は樹脂成形体の注型方法に
関し、硬化型樹脂、例えば、エポキシ樹脂を用いた高電
圧用絶縁成形体の注型に使用するものである。る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for casting a resin molded body, which is used for casting a high voltage insulating molded body using a curable resin such as an epoxy resin. It

【０００２】[0002]

【従来の技術】硬化型樹脂、例えば、エポキシ樹脂を用
いた絶縁体の成形には、注型法が広く使用されている。
近来、送電電圧の超高電圧化のために、碍子、碍管或い
は、ＧＩＳ内の連結導体の支持に使用する絶縁スペ−サ
等の品質の安定化が要求されている。かかる硬化型樹脂
製絶縁成形体の注型工程は、金型への材料の注入、樹脂
の加熱硬化並びに離型等から成っている。これらの工程
中、樹脂の加熱硬化には、加熱炉を使用する方式と金型
自体または金型に取り付けた熱板に電気ヒ−タを埋設
し、この電気ヒ−タにより金型を加熱する方式が知られ
ており、前者の方式では、加熱炉内における金型の載置
位置等によって加熱状態に相違を来し、従って、製品ご
とでの硬化状態のバラツキが生じやすいが、後者の方式
では、通電発熱温度を一定温度にコントロ−ルすること
によって製品ごとの硬化状態のバラツキを容易に排除で
きる。2. Description of the Related Art A casting method is widely used for molding an insulator using a curable resin such as an epoxy resin.
Recently, in order to increase the transmission voltage to an extremely high voltage, it is required to stabilize the quality of an insulator, an insulator tube, or an insulating spacer used for supporting a connecting conductor in a GIS. The step of casting the curable resin insulation molded body includes the steps of injecting a material into a mold, heating and curing the resin, and releasing the mold. During these steps, for heating and curing the resin, a method of using a heating furnace and an electric heater are embedded in the mold itself or a hot plate attached to the mold, and the mold is heated by the electric heater. The method is known, and in the former method, the heating state varies depending on the mounting position of the mold in the heating furnace, so that the curing state tends to vary from product to product, but the latter method Then, by controlling the energization heat generation temperature to a constant temperature, it is possible to easily eliminate the variation in the cured state among the products.

【０００３】而して、かかる通電加熱方式の採用、ま
た、冷却方法の改良、更には、加圧ゲル化法の採用等に
より、上記絶縁成形体の高度の品質の安定化が指向され
ている。Thus, by adopting such an electric heating method, improving the cooling method, and further adopting the pressure gelling method, it is aimed to stabilize the high quality of the insulating molded body. ..

【０００４】[0004]

【発明が解決しようとする課題】ところで、上記注型法
において、金型に材料を注入する場合、従来において
は、樹脂組成物に硬化剤を混合した後、樹脂組成物が注
型可能な状態にあるポットライフを最大限に利用するた
めに、１箇の金型への注入に要する時間をｔ、ポットラ
イフをＴとすれば、ワンバッチで製品Ｔ／ｔ箇分の量の
樹脂材料と硬化剤とを混合釜内で混合し、この混合した
材料をＴ／ｔ箇の金型に次々と注入している。By the way, in the case of injecting a material into a mold in the above-mentioned casting method, conventionally, after the resin composition is mixed with a curing agent, the resin composition can be cast. In order to make maximum use of the pot life, the time required for injection into one mold is t, and the pot life is T. In one batch, the amount of resin material and the amount of the resin material can be set to T / t. The agents are mixed in a mixing pot, and the mixed materials are poured into T / t molds one after another.

【０００５】而るに、次々と金型に材料が注入されてい
く間での時間経過に伴い、混合釜内の材料の粘度が硬化
反応の進行により変化していき、金型への注入材料の粘
度が金型ごとに相違する結果となり、材料中のフィラ−
の偏析状態が金型ごとに微妙に相違し、前記した硬化状
態等の一定化を図るだけでは、製品間での品質のバラツ
キを厳格には排除し難い。However, with the lapse of time while the materials are successively injected into the mold, the viscosity of the material in the mixing vessel changes due to the progress of the curing reaction, and the material injected into the mold is changed. As a result, the viscosity of each mold will be different and the filler in the material
The segregation state of No. differs slightly depending on the mold, and it is difficult to strictly eliminate the variation in quality among products only by making the above-mentioned hardening state constant.

【０００６】本発明の目的は、硬化型樹脂製の絶縁成形
体を注型法により成形する場合、各製品ごとのフィラ−
の偏析状態のバラツキを厳重に排除して製品の高度の品
質安定化を図ることにある。An object of the present invention is to provide a filler for each product when an insulating molding made of a curable resin is molded by a casting method.
Strictly eliminate the variation in the segregation state of the product to achieve a high level of product quality stabilization.

【０００７】[0007]

【課題を解決するための手段】本発明の樹脂成形体の注
型方法は、硬化剤を混合したフィラ−充填樹脂組成物を
金型に注入し、該注入樹脂を加熱硬化させることにより
絶縁体を成形する方法において、絶縁体１箇分の樹脂組
成物を計量し、この計量した樹脂組成物を所定量の硬化
剤を混合のうえ金型に注入することを特徴とする構成で
ある。[MEANS FOR SOLVING THE PROBLEMS] The method for casting a resin molded product of the present invention comprises injecting a filler-filled resin composition mixed with a curing agent into a mold, and heating and curing the injected resin to form an insulator. In the method of molding (1), the resin composition for one insulator is measured, and the measured resin composition is mixed with a predetermined amount of a curing agent and then injected into a mold.

【０００８】[0008]

【作用】硬化剤を添加した時から樹脂組成物を金型に注
入するまでの時間を一定にすることにより金型へ注入す
る時点での樹脂組成物の硬化進行度を一定にでき、金型
内に一定粘度で材料を注入できるから、金型内でのフィ
ラ−の偏析状態を一定にできる。従って、フィラ−の偏
析状態のバラツキを排除して製品の品質の安定化を図る
ことができる。[Function] By making the time from the addition of the curing agent to the injection of the resin composition into the mold constant, the curing progress of the resin composition at the time of injection into the mold can be made constant, and Since the material can be injected into the mold with a constant viscosity, the filler segregation state in the mold can be kept constant. Therefore, it is possible to stabilize the quality of the product by eliminating the variation in the segregation state of the filler.

【０００９】[0009]

【実施例】以下、図面により本発明の実施例を説明す
る。本発明の絶縁成形体の注型方法は、材料を型内に注
入するまでの段階、注入材料を離型できる機械的強度ま
でに硬化（一次硬化）させる段階、離型段階等の一連の
工程によって実施され、一次硬化に付随して、好ましく
は二次硬化も行われる。Embodiments of the present invention will be described below with reference to the drawings. The method for casting an insulating molded article according to the present invention includes a series of steps such as a step of injecting a material into a mold, a step of curing (primary curing) the injected material to a mechanical strength capable of releasing, a releasing step, and the like. The secondary curing is preferably performed in addition to the primary curing.

【００１０】本発明は各種の絶縁成形体の注型に使用で
き、例えば、図１の（イ）に示すような、ＧＩＳの導体
の支持に使用される絶縁スペ−サの注型に使用できる。
図１１の（イ）において、１１はエポキシ樹脂絶縁成形
体、１２は該成形体の中央に埋設した導体接続金具、１
３は同成形体１１の外周側に所定の間隔を隔てて埋設し
たボルト挿通孔金具である。The present invention can be used for casting various types of insulating molded articles, for example, for casting an insulating spacer used for supporting a conductor of GIS as shown in FIG. ..
In (a) of FIG. 11, 11 is an epoxy resin insulation molded body, 12 is a conductor connecting fitting embedded in the center of the molded body, 1
Reference numeral 3 denotes a bolt insertion hole fitting embedded in the outer peripheral side of the molded body 11 at a predetermined interval.

【００１１】この絶縁スペ−サの成形金型１４には、図
１の（ロ）に示すように縦割りで、樹脂注入口１５を上
端に設けたものを使用できる。図１の（ロ）は、導体接
続金具１２、ボルト挿通孔金具１３等をセットした型組
み状態を示している。As the molding die 14 of this insulating spacer, one having a resin injection port 15 provided at the upper end in a vertical division as shown in FIG. 1B can be used. FIG. 1B shows a mold assembly state in which the conductor connection fitting 12, the bolt insertion hole fitting 13 and the like are set.

【００１２】図２の（イ）は本発明において、型内への
材料の注入段階までの実施に使用する装置の一例を示す
平面図、図２の（ロ）は同装置を示す側面図である。図
２（イ）並びに（ロ）のにおいて、１６はタ−ンフレ−
ムであり、ア−ムに着脱自在に支持した混合釜１７を、
計量ステ−ション１８、撹拌ステ−ション１９、注入ス
テ−ション端２０１、洗浄ステ−ション２１へと移送し
ていく。FIG. 2A is a plan view showing an example of an apparatus used in the present invention up to the step of injecting a material into a mold, and FIG. 2B is a side view showing the apparatus. is there. In FIGS. 2A and 2B, 16 is a turn frame.
The mixing pot 17 that is detachably supported by the arm,
It is transferred to the metering station 18, the stirring station 19, the injection station end 201, and the cleaning station 21.

【００１３】２２１は計量ステ−ション１８の上方に設
置した混合樹脂貯槽であり、レジンミキサ−２３によっ
て加熱溶融した硬化型樹脂、例えば、エポキシ樹脂を所
定量、ポンプ（図示は省略してある）により送入すると
共にフィラ−槽２４１内のフィラ−、例えば、アルミ
ナ、シリカ等の所定量を熱風使用の気送パイプ（図示は
省略してある）により上記溶融樹脂とほぼ同温度に加熱
しつつ送入し、これらを撹拌羽根で混合しつづけてい
る。２０は注入ステ−ションであり、上記注入ステ−シ
ョン端２０１の近傍位置に真空チャンバ−２２を設け、
この真空チャンバ−２２と注入ステ−ション端２０１と
の間にクレ−ン２４を設けてある。Reference numeral 221 denotes a mixed resin storage tank installed above the measuring station 18, and a predetermined amount of a curable resin, for example, an epoxy resin, which is heated and melted by the resin mixer 23, is pumped (not shown). A predetermined amount of the filler in the filler tank 241 such as alumina and silica is sent while being heated to substantially the same temperature as the molten resin by an air delivery pipe (not shown) using hot air. It is put in, and these are continuously mixed with a stirring blade. Reference numeral 20 denotes an injection station, and a vacuum chamber-22 is provided in the vicinity of the injection station end 201.
A lane 24 is provided between the vacuum chamber 22 and the injection station end 201.

【００１４】このクレ−ン２４においては、図３に示す
ようにハッチ２４１を吊支した吊り線２５を具備し、注
入ステ−ション端２０１に位置する混合釜１７にハッチ
２４１が電磁チャック等で結着され、吊り線２５の引揚
げにより混合釜１７が上昇され、次いでクレ−ンキャリ
ヤ２６の水平走行により混合釜１７が真空チャンバ−２
２の直上に移送される。As shown in FIG. 3, the crane 24 is provided with a suspension wire 25 on which a hatch 241 is suspended, and the hatch 241 is an electromagnetic chuck or the like in the mixing pot 17 located at the injection station end 201. The mixing kettle 17 is bound and lifted up by the lifting of the suspension wire 25, and then the crane carrier 26 is horizontally moved to move the mixing kettle 17 to the vacuum chamber-2.
It is transferred directly above 2.

【００１５】本発明により絶縁成形体を注型するには、
計量ステ−ション１８において混合樹脂貯槽２２１内の
樹脂・フィラ−混合物を絶縁成形体の１箇分だけ混合釜
１７に計量・供給する。次いで、タ−ンフレ−ム１６を
９０⁰回転し、撹拌ステ−ション１９において硬化剤貯
槽２４２から所定量の硬化剤を混合釜に添加して前記の
樹脂・フィラ−混合物に撹拌混合する。更に、タ−ンフ
レ−ム１６を９０⁰回転し、注入ステ−ション端２０１
において上記したクレ−ン２４の吊り線先端のハッチ２
４１を混合釜１７に結着し、同吊り線の引揚げによりハ
ッチ結着混合釜を上昇させ、クレ−ンキャリヤ２６の水
平走行により同混合釜を真空チャンバ−２２直上に位置
させる。混合釜１７は真空引き口を有し、真空チャンバ
−２２直上においてその真空引き口が真空引きホ−ス
（図示されていない）に自動的にカップリングされ、混
合釜内が減圧状態とされる。In order to cast an insulating molded body according to the present invention,
In the measuring station 18, the resin / filler mixture in the mixed resin storage tank 221 is weighed and supplied to the mixing pot 17 by one portion of the insulating molded body. Then, data - inflation - the arm 16 90 ⁰ rotation, stirring stearyl - the resin-filler is added to the mixing kettle predetermined amount of the curing agent from the curing agent storage tank 242 in Deployment 19 - stirred mixture to the mixture. Furthermore, data - inflation - the arm 16 90 ⁰ rotation, injected stearyl - Deployment end 201
Hatch 2 at the end of the suspension line of the crane 24 described above in
41 is bound to the mixing pot 17, and the hatch binding mixing pot is raised by pulling up the suspension wire, and the crane carrier 26 is moved horizontally to position the mixing pot directly above the vacuum chamber-22. The mixing pot 17 has a vacuum port, and the vacuum port is automatically coupled to a vacuum hose (not shown) immediately above the vacuum chamber 22 so that the pressure inside the mixing pot is reduced. ..

【００１６】真空チャンバ−２２には、側部の扉から、
上記型組した状態の金型１４（台車１４１上にセットし
てある）を既に収容してあり、図４に示すように、上記
真空チャンバ−２２直上の混合釜１７の下端ノズル１７
１を、クレ−ン吊り線の下降操作で真空チャンバ−上端
のノズル挿通孔２２１（ズル挿通孔２２１にはシ−ルリ
ングを装着してあり、ノズル１７１がこのシ−ルリング
に密接に挿通される）を経て金型１４の注入口１５に挿
入する。次いで、真空チャンバ−２２内を真空引きによ
って減圧し（金型１４が真空チャンバ２２に入ると自動
的に真空引きが開始される）、この減圧下、ノズル１７
１のバルブ１７２を開いて混合釜１７内の材料を金型１
４内に注入する。The vacuum chamber 22 has a side door,
The mold 14 in the assembled state (set on the dolly 141) has already been housed, and as shown in FIG. 4, the lower end nozzle 17 of the mixing pot 17 directly above the vacuum chamber-22.
1, a nozzle insertion hole 221 at the upper end of the vacuum chamber is operated by lowering the crane suspension line (a seal ring is attached to the nozzle insertion hole 221 and the nozzle 171 is closely inserted into the seal ring). ) And is inserted into the injection port 15 of the mold 14. Next, the inside of the vacuum chamber 22 is decompressed by vacuuming (when the mold 14 enters the vacuum chamber 22, vacuuming is automatically started), and the nozzle 17 is depressurized.
No. 1 valve 172 is opened to open the material in the mixing kettle 17 to the mold 1
Inject into 4.

【００１７】金型１４内への材料注入を終了すれば、真
空チャンバ−２２内の真空引きを停止し、真空チャンバ
−２２の扉を開扉し、金型１４を後述する次ぎの硬化工
程に移送し、また、空になった混合釜をクレ−ンキャリ
ヤの水平走行、クレ−ン吊り線の操作により注入ステ−
ション端に返送し、ハッチを混合釜より脱離し、タ−ン
フレ−ムの９０⁰回転により混合釜を洗浄ステ−ション
に移送し、洗浄を行い、洗浄を終了した混合釜を計量ス
テ−ションに移送し、以後、上記した、絶縁成形体１個
分の樹脂・フィラ−混合材料の計量，硬化剤の混合，金
型への材料の注入，洗浄を繰り返していく。When the injection of the material into the mold 14 is completed, the evacuation of the vacuum chamber-22 is stopped, the door of the vacuum chamber-22 is opened, and the mold 14 is subjected to the next curing step described later. After the transfer, the empty mixing kettle is injected by operating the crane carrier horizontally and the crane suspension line.
Return to the end of the mixing chamber, remove the hatch from the mixing chamber, transfer the mixing chamber to the washing station by rotating the turn frame 90 ⁰ , wash and wash the mixing chamber. After that, the measurement of the resin / filler mixed material for one insulating molded body, the mixing of the curing agent, the injection of the material into the mold, and the cleaning are repeated.

【００１８】一方、真空チャンバ−内から取り出した材
料注入金型は加熱工程に移送し、金型の注入口に加圧ホ
−スを連結し、金型内を加圧空気等の加圧ガスで加圧し
つつ金型を加熱して注入材料を硬化させる。On the other hand, the material injection mold taken out from the vacuum chamber is transferred to a heating step, a pressurizing hose is connected to the injection port of the mold, and a pressurizing gas such as compressed air is supplied in the mold. The mold is heated while applying pressure to cure the injection material.

【００１９】上記材料に配合するフィラ−には、シリ
カ、アルミナ等が使用され、その配合料は、通常、樹脂
１００重量部に対して１５０〜３５０重量部である。こ
のこれらフィラ−の比重は樹脂の約２〜３倍であり、材
料がある程度の粘度にゲル化されるまでの間、フィラ−
の沈降がつづき、フィラ−の偏析が余儀なくされ、下側
にフィラ−リツチ層が、上側に樹脂リッチ層が生成する
に至る。Silica, alumina, etc. are used for the filler to be mixed with the above materials, and the compounding amount thereof is usually 150 to 350 parts by weight with respect to 100 parts by weight of the resin. The specific gravity of these fillers is about 2 to 3 times that of resin, and until the material gels to a certain viscosity, the filler
Continues to settle, and the segregation of fillers is unavoidable, leading to the formation of a filler-rich layer on the lower side and a resin-rich layer on the upper side.

【００２０】この場合、硬化速度を高速にすれば、樹脂
を早くゲル化でき、フィラ−の偏析をそれだけ軽減でき
るが、硬化収縮速度が高速となり、その収縮分に対する
材料の補充が追いつかずにボイド、ヒケ、反り等が生じ
易い。而して、硬化速度をある程度抑制せざるを得ず、
フィラ−の偏析を回避することは困難である。而るに、
このフィラ−の偏析は、絶縁成形体の強度に影響を及ぼ
し、更に、金型加熱中での材料への熱伝達速度に影響を
来し、硬化収縮、熱膨張収縮に起因する製品のひけ、ボ
イド、反り等にも微妙に影響してくる。従って、フィラ
−の偏析も製品の品質に関係し、製品の品質の安定化に
は、硬化のための加熱条件の一定化のみならず、フィラ
−の偏析のバラツキを排除することが重要である。In this case, if the curing speed is increased, the resin can be gelled faster and the segregation of the filler can be reduced by that much, but the curing shrinkage speed becomes high and the replenishment of the material for the shrinkage cannot catch up with the void. , Sink marks, and warp are likely to occur. Therefore, there is no choice but to suppress the curing speed to some extent.
It is difficult to avoid filler segregation. However,
The segregation of this filler affects the strength of the insulating molded body, further affects the heat transfer rate to the material during heating of the mold, and shrinks the product due to curing shrinkage and thermal expansion / shrinkage. It also has a subtle effect on voids and warpage. Therefore, the segregation of the filler is also related to the quality of the product, and in order to stabilize the quality of the product, it is important not only to keep the heating conditions for curing constant but also to eliminate the variation in the segregation of the filler. ..

【００２１】而るに、従来においては、金型への材料の
注入に所謂、多数面の金型を使用しており、金型内に注
入する材料の粘度が金型ごとに異なり、金型に材料が注
入されたのち、材料がフィラ−の沈降を阻止し得る粘度
にまでゲル化される間のフィラ−の沈降状態が金型ごと
に異なるから、製品ごとのフィラ−の偏析状態の差異が
不可避的に生じ、硬化のための加熱条件を厳密に一定に
しても、製品間の品質のバラツキを完全に防止すること
ができない。[0021] However, conventionally, a so-called multi-sided mold is used for injecting the material into the mold, and the viscosity of the material injected into the mold is different for each mold, The difference in the segregation state of the filler from product to product because the sedimentation state of the filler varies from mold to mold after the material is poured into the gel and the material gels to a viscosity that can prevent the sedimentation of the filler. Inevitably occurs, and even if the heating conditions for curing are kept strictly constant, it is not possible to completely prevent quality variations among products.

【００２２】これに対し、本発明においては、製品一箇
分のフィラ−・樹脂混合物を混合釜に計量供給し、これ
に必要量の硬化剤を混合し、この硬化剤混合材料を金型
に注入しているから、硬化剤を加えたのち材料がフィラ
−の沈降を阻止し得る粘度にまでゲル化される間の時間
を金型間において同一にでき、製品ごとのフィラ−の偏
析状態を同じにでき、硬化のための加熱条件を一定にす
ることにより、製品間の品質のバラツキをほぼ完全に防
止できる。On the other hand, in the present invention, the filler-resin mixture for one product is metered and fed into the mixing pot, the required amount of the curing agent is mixed therein, and this curing agent mixed material is put into the mold. Since it is being injected, the time during which the material is gelled to a viscosity that can prevent the sedimentation of the filler after adding the curing agent can be made the same between the molds, and the segregation state of the filler for each product can be controlled. The same can be done, and by making the heating conditions for curing constant, it is possible to almost completely prevent quality variations between products.

【００２３】本発明において、材料硬化のための金型加
熱は一定の条件で行なわれ、熱板加熱方式、コンビュ−
タ制御等が使用される。図５は本発明において、材料注
入工程以後の工程に使用する装置の一例を示している。
図５において、２７はトラバ−サ、２８はトラバ−サレ
−ルであり、一端が上記注入ステ−ション２０の側部に
位置している。２９はトラバ−サレ−ル２８の他端に設
けた補助レ−ル、３０は離型、型組みステ−ションであ
る。３１は熱風式二次乾燥炉、３２，３３はコンベアラ
インである。In the present invention, the heating of the mold for hardening the material is carried out under constant conditions.
Data control is used. FIG. 5 shows an example of an apparatus used in the steps after the material injection step in the present invention.
In FIG. 5, 27 is a traverser and 28 is a traverser rail, one end of which is located on the side of the injection station 20. Reference numeral 29 is an auxiliary rail provided at the other end of the traverser rail 28, and 30 is a mold releasing / mold assembly station. Reference numeral 31 is a hot air type secondary drying furnace, and 32 and 33 are conveyor lines.

【００２４】４，…はトラバ−サレ−ル２８の両側に複
数台、並設した加熱装置であり、図６に示すように、電
熱ヒ−タを内蔵する加熱板４１を２枚、対向させてピス
トンロッド４２で支持した構成を備え、金型１４を熱板
４１，４１間に移入させ、ピストンロッド４２，４２の
操作で熱板４１，４１が金型１４に接触される。Denoted by 4 are heating devices arranged in parallel on both sides of the traverser rail 28. As shown in FIG. 6, two heating plates 41 containing electric heating heaters are opposed to each other. The mold 14 is moved between the hot plates 41, 41, and the hot plates 41, 41 are brought into contact with the mold 14 by operating the piston rods 42, 42.

【００２５】上記の前半工程、即ち、真空チャンバ−内
での金型への材料注入を終了したのちの作業を、図５に
示す装置により行うには、真空チャンバ−２２の扉を開
き、材料注入金型をトラバ−サ２７に移載し、並設の熱
板加熱装置４，…中から制御プログラムに基づき、所定
の熱板加熱装置を選択し、トラバ−サ２７のコンピュ−
タ制御により金型をその選択した加熱装置４の熱板間に
移入させ、熱板を金型に接触させる。この硬化は、成形
材料に離型可能な機械的強度を付与する、所謂、一次硬
化であり、加熱時間は通常、２〜４時間である。In order to perform the above-mentioned first half step, that is, the work after the material injection into the mold in the vacuum chamber is completed by the apparatus shown in FIG. 5, the door of the vacuum chamber-22 is opened, and the material is opened. The injection die is transferred to the traverser 27, a predetermined hot plate heating device is selected from the hot plate heating devices 4 ,.
The mold is transferred between the hot plates of the selected heating device 4 by the data control, and the hot plate is brought into contact with the mold. This curing is a so-called primary curing that imparts releasable mechanical strength to the molding material, and the heating time is usually 2 to 4 hours.

【００２６】一次硬化を終了すれば、金型を熱板加熱装
置４から脱出させ、トラバ−サ２７のコンピュ−タ制御
によりトラバ−サレ−ル２８並びに補助レ−ル２９を経
て離型ステ−ション３０に移送し、離型後の金型を再度
型組し（導体接続金具、ボルト挿通金具をセットす
る）、この型組した金型をトラバ−サ２７に移載し、並
設の熱板加熱装置４，…中から制御プログラムに基づき
所定の熱板加熱装置４を選択し、トラバ−サ２７のコン
ピュ−タ制御により、金型をその選択した加熱装置の熱
板間に移入させて金型の予熱を行い、この予熱した金型
を真空チャンバ−２２内に移入させる。When the primary curing is completed, the mold is ejected from the hot plate heating device 4, and the mold is released from the traverser rail 28 and the auxiliary rail 29 by the computer control of the traverser 27. The mold after the mold is released, the mold is reassembled (the conductor connecting fitting and the bolt inserting fitting are set), the assembled mold is transferred to the traverser 27, and the heat is installed in parallel. A predetermined hot plate heating device 4 is selected from among the plate heating devices 4, ... Based on a control program, and the mold is transferred between the hot plates of the selected heating device by computer control of the traverser 27. The mold is preheated and the preheated mold is transferred into the vacuum chamber-22.

【００２７】この間、前記した混合釜へのフィラ−・樹
脂混合材料の計量供給、硬化剤の添加混合並びに材料受
容混合釜の注入ステ−ションへの移行等が並行して行わ
れ、予熱金型を真空チャンバ−２２内に移入するときに
は、材料注入済み混合釜のノズルが真空チャンバ−のノ
ズル挿通孔に挿通された状態にある。During this time, the above-mentioned filler / resin mixed material is metered into the mixing vessel, the curing agent is added and mixed, and the material receiving mixing vessel is moved to the injection station. Is transferred into the vacuum chamber-22, the nozzle of the mixing tank in which the material has been injected is inserted into the nozzle insertion hole of the vacuum chamber.

【００２８】上記一連の操作は、製品の製造個数、種
類、寸法等に応じ、上記一次硬化に使用する熱板加熱装
置の選択、金型予熱のための熱板加熱装置の選択、加熱
時間、熱板加熱装置の熱板開閉、トラバ−サの走行、混
合釜へのフィラ−・樹脂混合材料の計量供給、硬化剤の
添加混合、注入ステ−ションのリフトの作動等に対する
制御プログラムを設定し、全てコンピュ−タ制御によっ
て行う。The above-mentioned series of operations is performed by selecting the hot plate heating device used for the primary curing, the hot plate heating device for preheating the mold, the heating time, depending on the number of products manufactured, the type, the size, etc. Set the control program for opening and closing the hot plate of the hot plate heating device, running the traverser, metering the filler / resin mixed material to the mixing pot, adding and mixing the curing agent, and operating the lift of the injection station. , All by computer control.

【００２９】上記一次硬化品の離型後においては、図５
において、その一次硬化品を入口コンベヤ３２によって
熱風加熱炉３１に搬入し、この加熱炉３１内を一次硬化
品が走行する間に二次硬化が行われ、硬化の完了した製
品を出口コンベヤ３３で搬出していく。After releasing the primary cured product, as shown in FIG.
In, the primary cured product is carried into the hot air heating furnace 31 by the inlet conveyor 32, the secondary curing is performed while the primary cured product travels in the heating furnace 31, and the cured product is exited by the outlet conveyor 33. I will carry it out.

【００３０】[0030]

【発明の効果】本発明の樹脂成形体の注型方法によれ
ば、上述した通り、フィラ−充填の硬化型材料で絶縁成
形体を注型する場合、成形体におけるフィラ−の偏析状
態を一定にでき、フィラ−の偏析状態のバラツキに起因
する製品品質のバラツキを排除し得、硬化（一次硬化）
のための加熱状態の一定下、製品品質のバラツキをほぼ
完全に除去できる。従って、本発明は品質の高度の安定
化が要求される超高電圧用絶縁成形体の製造に極めて有
用である。As described above, according to the method for casting a resin molded body of the present invention, when an insulating molded body is cast with a filler-filled curable material, the segregation state of the filler in the molded body is kept constant. It is possible to eliminate variations in product quality due to variations in the segregation state of the filler, and to cure (primary curing)
The product quality variation can be almost completely removed under a constant heating condition. Therefore, the present invention is extremely useful in the production of an ultra-high voltage insulating molded body which requires a high degree of quality stabilization.

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

【図１】図１の（イ）は本発明によって注型する絶縁成
形体の一例を示す断面図、図１の（ロ）は同絶縁成形体
の注型に使用する金型を示す断面図である。1 (a) is a sectional view showing an example of an insulating molded body to be cast according to the present invention, and FIG. 1 (b) is a sectional view showing a mold used for casting the insulating molded body. Is.

【図２】図２の（イ）は本発明において、材料注入まで
の工程に使用する製造装置の一例を示す平面図、図２の
（ロ）は同装置を示す側面図である。FIG. 2A is a plan view showing an example of a manufacturing apparatus used for steps up to material injection in the present invention, and FIG. 2B is a side view showing the apparatus.

【図３】図２に示す装置における注入ステ−ションを示
す側面図である。FIG. 3 is a side view showing an injection station in the apparatus shown in FIG.

【図４】同上注入ステ−ションにおける注入状態を示す
説明図である。FIG. 4 is an explanatory view showing an injection state in the injection station of the above.

【図５】本発明において、材料注入以後の工程に使用す
る製造装置の一例を示す平面図である。FIG. 5 is a plan view showing an example of a manufacturing apparatus used in a step after material injection in the present invention.

【図６】図５に示す装置における熱板加熱装置を示す斜
視図である。FIG. 6 is a perspective view showing a hot plate heating apparatus in the apparatus shown in FIG.

【符号の説明】[Explanation of symbols]

１４ 金型 １８ 計量ステ−ション １９ 撹拌ステ−ション ２０ 注入ステ−ション ４ 加熱装置 ３１ 加熱炉 14 Mold 18 Metering Station 19 Stirring Station 20 Injection Station 4 Heating Device 31 Heating Furnace

───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保 武彦 大阪府茨木市下穂積１丁目１番２号 日東 電工株式会社内 (72)発明者 中村 孝 大阪府茨木市下穂積１丁目１番２号 日東 電工株式会社内 (72)発明者 藤田 達也 大阪府茨木市下穂積１丁目１番２号 日東 電工株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takehiko Kubo 1-2-2 Shimohozumi, Ibaraki-shi, Osaka Prefecture Nitto Denko Corporation (72) Takashi Nakamura 1-2-1 Shimohozumi, Ibaraki-shi, Osaka Prefecture Nitto Denko Co., Ltd. (72) Inventor Tatsuya Fujita 1-2-1 Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Denko Corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】硬化剤を混合したフィラ−充填樹脂組成物
を金型に注入し、該注入樹脂を加熱硬化させることによ
り絶縁体を成形する方法において、絶縁体１箇分の樹脂
組成物を計量し、この計量した樹脂組成物を所定量の硬
化剤を混合のうえ金型に注入することを特徴とする樹脂
成形体の注型方法。1. A method for molding an insulator by injecting a filler-filled resin composition mixed with a curing agent into a mold, and curing the injected resin by heating to obtain a resin composition for one insulator. A method for casting a resin molded body, which comprises measuring, measuring the resin composition, mixing a predetermined amount of a curing agent, and injecting the mixture into a mold.