JP2889708B2 - Resin casting machine - Google Patents
Resin casting machineInfo
- Publication number
- JP2889708B2 JP2889708B2 JP40598290A JP40598290A JP2889708B2 JP 2889708 B2 JP2889708 B2 JP 2889708B2 JP 40598290 A JP40598290 A JP 40598290A JP 40598290 A JP40598290 A JP 40598290A JP 2889708 B2 JP2889708 B2 JP 2889708B2
- Authority
- JP
- Japan
- Prior art keywords
- casting
- resin
- tank
- valve
- mold
- 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
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、超電導磁気浮
上鉄道用推進コイルなどのように、高電圧・大電流で励
磁される樹脂モールドコイル等の注型品を製作する樹脂
注型装置に関するものである。The present invention relates to, for example, such as in the superconducting magnetic levitation railway propulsion coils, excitation at a high voltage and large current
The present invention relates to a resin casting apparatus for producing a cast product such as a resin molded coil to be magnetized .
【０００２】[0002]
【従来の技術】例えば、超電導磁気浮上式鉄道用推進コ
イルやガス遮断器の絶縁部品のように高電圧・大電流で
励磁される電気機器は、エポキシ樹脂の注型で製作され
る。このエポキシ樹脂注型品（以下、注型物という）
は、電気的・機械的特性が優れているが、このうち、と
くに電気的寿命を確保するためには、使用中に部分放電
を発生させないことが重要となる。注型物のエポキシ樹
脂部分に微少ボイドが存在すると、電界がボイドの部分
に集中して部分放電が発生しやすくなる。そのため、超
電導磁気浮上式鉄道用推進コイルやガス遮断器の絶縁部
品のように高電圧が印加される電気機器をエポキシ樹脂
で注型する場合には、真空注型法が用いられている。こ
の真空注型法は、例えば図２に示すような注型装置を用
いて行われる。すなわち、導線を巻回したコイルのよう
な被注型物１を所定の位置に保持した注型金型２ａ，２
ｂを注型タンク３に収納し、樹脂流出口４と注型金型２
ａ，２ｂの上部に設けた開口部の間に樋５をかける。こ
の状態で真空バルブ６を開き注型タンク３の内部を真空
ポンプ７で排気する。注型タンク３の内部が十分な真空
度に達した後、樹脂バルブ８を開き樹脂タンク９の内部
に貯留されているエポキシ注型樹脂（以下、樹脂とい
う）を樋５を介して注型金型２ａ，２ｂの内部に注入す
る。その後、リークバルブ10を開いて注型タンク３の内
部を一旦大気圧に戻し、さらにリークバルブ10を閉め加
圧バルブ11を開き加圧空気を供給して注型タンク３の内
部を加圧する。樹脂タンク９の中の樹脂中に残った気泡
は、樋５を流れる際真空中で発泡し取り除かれ、また注
型金型２ａ，２ｂの内部を加圧することにより、注型物
の内部に残る真空ボイドを押しつぶしボイドが形成され
ず部分放電の発生しにくい注型物を得る。BACKGROUND ART For example, as the insulating part products of the superconducting maglev propulsion coil and the gas circuit breaker in high voltage and high current
Electrical equipment to be energized is made of cast epoxy resin. This epoxy resin casting (hereinafter referred to as casting)
Is electrical and mechanical properties are excellent, among this, in order to particularly ensure electrical life, partial discharge during use
That Do is important to not generate. If minute voids are present in the epoxy resin portion of the casting, the electric field is concentrated on the void portion, and partial discharge is likely to occur. Therefore , the superconducting magnetic levitation railway propulsion coil and the insulation of the gas circuit breaker
Epoxy resins electrical equipment to which a high voltage is applied to goods
In the case of casting by a vacuum casting method , a vacuum casting method is used. This vacuum casting method is performed using, for example, a casting apparatus as shown in FIG. That is, casting mold to be cast material 1 was held in place, such as a coil formed by winding a conductive wire 2a, 2
b in the casting tank 3, and the resin outlet 4 and the casting mold 2.
A gutter 5 is provided between the openings provided in the upper portions of a and 2b. In this state, the vacuum valve 6 is opened, and the inside of the casting tank 3 is evacuated by the vacuum pump 7 . After the inside of the casting tank 3 reaches a sufficient degree of vacuum , the resin valve 8 is opened, and the epoxy casting resin (hereinafter referred to as “resin”) stored in the inside of the resin tank 9 is cast through the gutter 5. injected into the inner portion of the mold 2 a, 2 b. After that, the leak valve 10 is opened to open the casting tank 3.
Once to return to atmospheric pressure section, and further supplying the pressurized air to open the pressure valve 11 closes the leak valve 10 to pressurize the interior of the casting tank 3. Bubbles remaining in the resin in the resin tank 9 are foamed and removed in a vacuum when flowing through the gutter 5, and the inside of the casting molds 2a and 2b is pressurized to form a casting.
Then, a vacuum void remaining in the inside is crushed to obtain a casting in which no void is formed and a partial discharge hardly occurs.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この方
法では樹脂の脱泡を樋５の上を流す間に行うため、樹脂
は少量ずつ樋５の上を流す必要があり、作業には熟練と
時間を要し、安定した品質の注型物を得ることが困難と
なったり大量生産に適さない。また、注型タンク３も真
空と加圧の両方に耐える構造とする必要があり、構造も
複雑で高価なものとなっていた。 The object of the invention is to, however, this man
In the method, the resin is defoamed while flowing over the gutter 5, so that the resin
Need to flow over the gutter 5 little by little.
It takes time and it is difficult to obtain castings of stable quality
Not suitable for mass production. The casting tank 3 is also true.
The structure must be able to withstand both air and pressure.
It was complicated and expensive.
【０００４】本発明の目的は、高電圧で用いられる注型
物の真空注型において、作業に熟練を要せず短時間で安
定した品質の製品を得ることができると共に、大量生産
が可能で安価な装置とすることができる樹脂注型装置を
提供することにある。[0004] It is an object of the present invention to obtain a product of stable quality in a short period of time without the need for skill in vacuum casting of a casting used at a high voltage, and mass production is possible. An object of the present invention is to provide a resin casting device that can be manufactured at a low cost.
【０００５】[0005]
【課題を解決するための手段】請求項１に対応する発明
の樹脂注型装置は、密封構造の注型タンクと、この注型
タンクに収納され注型部とこの注型部の上端と連通する
空間部が内部の注入部に形成され空間部の排気口に開閉
機構が取り付けられた注型金型と、この注型金型の下部
に下端が接続され上部が注型タンクを気密に貫通する注
入管と、この注入管の上部に接続された加圧弁と、注入
管の上端に注入弁を介して下部が接続さ れ上部にリーク
弁が接続された樹脂タンクと、この樹脂タンクと注型タ
ンクに接続された真空ポンプとを備えたことを特徴とす
る。Means for Solving the Problems The invention corresponding to claim 1
The resin casting device, a casting tank sealing structure, the casting
It is stored in the tank and communicates with the casting part and the upper end of this casting part
A space is formed in the internal injection section and opens and closes the exhaust port in the space
Casting mold with mechanism installed and lower part of this casting mold
Lower end and an upper connected through hermetically cast tank Note
An inlet tube, a pressurized valve connected to the top of the inlet tube,
The lower part is connected to the upper end of the pipe via an injection valve and the upper part leaks
The resin tank to which the valve is connected, and the resin tank and the casting tank
And a vacuum pump connected to the
You .
【０００６】[0006]
【作用】被注型物を収納保持した注型金型の排気口を開
き、注型タンクと同時に注型金型も排気する。この後樹
脂タンクより予め脱泡された樹脂を樹脂流路を介して注
型金型に注入する。この後注型金型の排気口を閉じ、加
圧流体を樹脂流路を介して注型金型に供給し、注入した
樹脂を加圧し真空ボイドを押しつぶす。The function of the invention is to open the exhaust port of the casting mold storing and holding the object to be cast, and to exhaust the casting mold simultaneously with the casting tank. Thereafter, the resin that has been defoamed in advance from the resin tank is injected into the casting mold via the resin flow path. Thereafter, the exhaust port of the casting mold is closed, a pressurized fluid is supplied to the casting mold via the resin flow path, and the injected resin is pressurized to crush the vacuum void.
【０００７】[0007]
【実施例】以下、本発明の一実施例を図面を参照して説
明する。図１は、本発明の一実施例を示す縦断面図であ
る。同図において、符号１は被注型物、符号12ａ，12ｂ
はこの被注型物１を所定の位置に保持する注型金型、符
号13は注型金型12ａ，12ｂを収納し真空バルブ６，リー
クバルブ10を設けると共に注型金型12ａ，12ｂに下端を
接続し樹脂を注入する配管14が上部から導入されている
注型タンクである。また、配管14の上端が接続される樹
脂タンク９には、密閉可能な蓋15が取り付けられ、この
蓋15に真空バルブ16およびリークバルブ17を接続し、真
空バルブ16は、配管18を介して注型タンク13の真空バル
ブ６の排出側に接続する。一方、注型金型12ａ，12ｂの
上部には、排気口開閉機構19を設ける。この排気口開閉
機構19は、注型金型12ａに設けた金型排気口20を開閉す
るもので、注型金型12ａに取り付けた電磁弁（または空
気シリンダ）21を主要構成部とし、注型金型12ａには電
磁弁（または空気シリンダ）21の可動部に設けた弁体21
ａが接離する弁座12ｃを形成し、注型金型12ｂには、弁
体21ａが移動するための空間部12ｄを介して注型タンク
13の外部に設けたスイッチ（またはバルブ）に接続され
ている。次に、以上のように構成された樹脂注型装置の
作用を説明する。まず、被注型物１を所定の位置に保持
した注型金型12ａ，12ｂを注型タンク13にセットし、配
管14を注型金型12ｂに接続する。また、注型金型12ａの
金型排気口20と真空バルブ６を開き、注型タンク13の内
部を所定の真空度まで排気する。これと略同時に真空バ
ルブ16を開き、樹脂タンク９の内部を真空に排気し樹脂
を脱泡する。樹脂の脱泡が終了したら真空バルブ16を閉
じリークバルブ17を開き、樹脂タンク９の内部を大気圧
に戻す。次に樹脂バルブ８を開けることにより、樹脂を
注型金型12ａ，12ｂの内部に位置エネルギーおよび真空
と大気の圧力差により急速に流し込む。金型排気口20
は、排気口開閉機構19により樹脂が一定量流れた時点で
閉じられる。金型排気口20が閉じられた後も樹脂が入っ
ていない注型金型12ａ，12ｂの内部は真空に保たれるた
め、樹脂は注型金型内12ａ，12ｂに満たされる。この
後、樹脂バルブ８を閉じ加圧バルブ11を開き注型金型12
ａ，12ｂの内部を加圧し、注型物内部に残る真空ボイド
を押しつぶす。An embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a longitudinal sectional view showing an embodiment of the present invention. In the figure, reference numeral 1 denotes an object to be cast, and reference numerals 12a and 12b.
Casting mold for holding the object to be cast material 1 in position, marks
Issue 13 vacuum valve 6 housed casting dies 12a, a 12b, casting dies 12a provided with a leak valve 10, the pipe 14 for injecting a resin to connect the lower end to 12b is introduced from the top of It is a casting tank. Further, the resin tank 9 in which the upper end of the pipe 14 is connected, sealable lid 15 is Ri attached preparative connects the vacuum valve 16 and the leak valve 17 to the lid 15, the vacuum valve 16, the pipe 18 Is connected to the discharge side of the vacuum valve 6 of the casting tank 13 via the. On the other hand, an exhaust port opening / closing mechanism 19 is provided above the casting dies 12a and 12b. The exhaust port opening and closing mechanism 19 is for opening and closing the mold outlet 20 provided in the casting mold 12a, solenoid valve attach the casting mold 12a (or air cylinder) 21 as a main component , the valve element 21 in the casting mold 12a provided on the movable portion of the solenoid valve (or air cylinder) 21
a is formed between the valve seat 12c and the casting mold 12b via a space 12d through which the valve element 21a moves.
It is connected to a switch (or valve) provided outside of 13 . Next, the operation of the resin casting apparatus configured as described above will be described. First, the casting molds 12a and 12b holding the object 1 in a predetermined position are set in the casting tank 13, and the piping 14 is connected to the casting mold 12b. Further, the mold exhaust port 20 of the casting mold 12a and the vacuum valve 6 are opened , and the inside of the casting tank 13 is evacuated to a predetermined degree of vacuum. At about the same time, the vacuum valve 16 is opened, the inside of the resin tank 9 is evacuated to vacuum, and the resin is defoamed. When the degassing of the resin is completed, the vacuum valve 16 is closed and the leak valve 17 is opened to return the inside of the resin tank 9 to the atmospheric pressure. By opening the resin valve 8 The resin <br/> casting mold 12a, Komu rapidly flow by the pressure difference between the potential energy and the vacuum and the atmosphere inside the 12b. Mold exhaust port 20
Is closed when a certain amount of resin flows by the exhaust port opening / closing mechanism 19. Even after the mold exhaust port 20 is closed, the interior of the casting molds 12a and 12b containing no resin is kept at a vacuum, so that the resin is filled in the casting molds 12a and 12b. Thereafter, the resin valve 8 is closed, the pressure valve 11 is opened, and the casting mold 12 is opened.
The insides of a and 12b are pressurized to crush the vacuum void remaining inside the casting.
【０００８】このように本実施例によれば、高速に樹脂
を注型金型12ａ，12ｂ内に流し込み、加圧空気の圧力が
注型タンク13には作用しない安価な装置で、品質の安定
した注型物を、大量かつ容易に製作することができる。As described above, according to this embodiment, the resin is poured into the casting molds 12a and 12b at a high speed, and the pressure of the pressurized air does not act on the casting tank 13. Can be easily manufactured in large quantities.
【０００９】[0009]
【発明の効果】以上説明したように本発明によれば、注
型タンクに収納する注型金型に注型タンクに連通する排
気口およびこの排気口を開閉する機構を設け、注型タン
クと注型金型を同時に排気し、予め脱泡された樹脂を注
型金型より高い位置から注型金型内に注入し、しかる後
樹脂流路を介して加圧空気を供給し注入した樹脂を加圧
するので、生産性の向上と品質の安定した注型物を大量
かつ容易に製作でき、しかも安価とした樹脂注型装置を
提供することができる。As described above, according to the present invention, the casting die housed in the casting tank is provided with an exhaust port communicating with the casting tank and a mechanism for opening and closing the exhaust port. The casting mold is simultaneously evacuated, and the resin defoamed in advance is injected into the casting mold from a position higher than the casting mold, and thereafter, the injected resin is supplied by supplying pressurized air through the resin flow path. , Pressurized resin can be mass-produced easily with high productivity and stable quality, and a low-cost resin casting apparatus can be provided.
【図１】本発明の一実施例の構成を示す縦断面図。 Longitudinal cross-sectional view showing the structure of an embodiment of the present invention; FIG.
【図２】従来の樹脂注型装置の構成を示す縦断面図。[Figure 2] longitudinal sectional view showing a configuration of a conventional resin casting device.
１…被注型物、７…真空ポンプ、８…樹脂バルブ、９…
樹脂タンク、11…加圧 バルブ、12ａ，12ｂ…注型金型、
12ｄ…空間部、13…注型タンク、14…配管、17…リーク
弁、19…排気口開閉機構、20…金型排気口。Reference numeral 1 denotes an object to be injected, 7 a vacuum pump, 8 a resin valve, 9 ...
Resin tank, 11… Pressure valve, 12a, 12b… Casting mold,
12d ... space, 13 ... casting tank, 14 ... piping, 17 ... leak
Valve, 19: Exhaust port opening / closing mechanism, 20: Mold exhaust port.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 槙島 聡 東京都府中市東芝町１番地 株式会社東 芝 府中工場内 (72)発明者 齋藤 敏久 東京都府中市東芝町１番地 株式会社東 芝 府中工場内 (56)参考文献 特開 平２−295707（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 39/00 - 39/44 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Makishima 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant, Inc. (72) Inventor Toshihisa Saito 1 Toshiba-cho, Fuchu-shi, Tokyo Fuchu Plant, Toshiba Corporation (56) References JP-A-2-295707 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) B29C 39/00-39/44
Claims (1)
クに収納され注型部とこの注型部の上端と連通する空間
部が内部の注入部に形成され前記空間部の排気口に開閉
機構が取り付けられた注型金型と、この注型金型の下部
に下端が接続され上部が前記注型タンクを気密に貫通す
る注入管と、この注入管の上部に接続された加圧弁と、
前記注入管の上端に注入弁を介して下部が接続され上部
にリーク弁が接続された樹脂タンクと、この樹脂タンク
と前記注型タンクに接続された真空ポンプとを備えた樹
脂注型装置。1. A casting tank having a sealed structure, and the casting tank
Space that is stored in the housing and communicates with the casting part and the upper end of this casting part
Part is formed in the internal injection part and opens and closes the exhaust port of the space part
Casting mold with mechanism installed and lower part of this casting mold
The lower end is connected to and the upper part airtightly penetrates the casting tank .
An injection pipe, a pressurization valve connected to an upper part of the injection pipe,
The lower part is connected to the upper end of the injection pipe via an injection valve and the upper part
Tank with a leak valve connected to it and this resin tank
And a vacuum pump connected to the casting tank .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40598290A JP2889708B2 (en) | 1990-12-25 | 1990-12-25 | Resin casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40598290A JP2889708B2 (en) | 1990-12-25 | 1990-12-25 | Resin casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04221615A JPH04221615A (en) | 1992-08-12 |
| JP2889708B2 true JP2889708B2 (en) | 1999-05-10 |
Family
ID=18515610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40598290A Expired - Lifetime JP2889708B2 (en) | 1990-12-25 | 1990-12-25 | Resin casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2889708B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068666A1 (en) * | 2011-11-08 | 2013-05-16 | Snecma | Pressure holding device for producing composite components by the injection moulding of resin, and associated method |
| CN102514132B (en) * | 2011-12-28 | 2013-11-06 | 西安航天复合材料研究所 | Method for manufacturing shape memory polymer core mold by winding composite material component |
| CN106426985A (en) * | 2016-10-28 | 2017-02-22 | 河北大学 | Vacuum circulation pouring device with resin injected from bottom and pouring method |
-
1990
- 1990-12-25 JP JP40598290A patent/JP2889708B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04221615A (en) | 1992-08-12 |
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