JPS607128Y2 - Centrifugal molding equipment for rubber or plastic - Google Patents
Centrifugal molding equipment for rubber or plasticInfo
- Publication number
- JPS607128Y2 JPS607128Y2 JP14851879U JP14851879U JPS607128Y2 JP S607128 Y2 JPS607128 Y2 JP S607128Y2 JP 14851879 U JP14851879 U JP 14851879U JP 14851879 U JP14851879 U JP 14851879U JP S607128 Y2 JPS607128 Y2 JP S607128Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- vacuum
- rubber
- plastic
- centrifugal 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
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【考案の詳細な説明】
本考案はゴムまたはプラスチックの遠心成形装置の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved centrifugal molding apparatus for rubber or plastic.
ゴムまたはプラスチックを遠心成形法によって成形する
ことは公知である。It is known to mold rubber or plastics by centrifugal molding.
例えば、ＦＲＰ管を成形する場合、回転筒金型の内面に
、ガラス繊維混合エポキシ樹脂液を、筒金型内を軸方向
に走行するノズルを用いて付着させ、この付着樹脂を遠
心力により加圧成形し、而るのち、筒金型の加熱により
樹脂の最終硬化を行うことが公知である。For example, when molding an FRP pipe, a glass fiber-mixed epoxy resin liquid is applied to the inner surface of a rotating cylindrical mold using a nozzle that runs in the axial direction inside the cylindrical mold, and this adhered resin is applied by centrifugal force. It is known to perform pressure molding and then final curing of the resin by heating a cylindrical mold.
ところで、ゴム、プラスチックの比重は金属に比べて一
段と小であり、ゴム、プラスチックの遠心成形時での気
泡の分離性は遠心鋳造法による鋳鉄鋳造時での脱泡には
とうてい及ばない。By the way, the specific gravity of rubber and plastics is much lower than that of metals, and the ability to separate air bubbles during centrifugal molding of rubber and plastics is far inferior to that achieved during centrifugal casting of cast iron.
而るに、従来、ゴム、プラスチックの遠心成形での脱泡
は遠心分離にのみ頼っており、その分離性が劣るために
、金型を長時間にわたって回転させる必要がある。However, conventionally, degassing in centrifugal molding of rubber and plastics has relied only on centrifugation, and because the separation performance is poor, it is necessary to rotate the mold for a long time.
従って、ゴムまたはプラスチック製品の製造に長時間を
要し、全体としての製造能率に劣るといった不利がある
。Therefore, there are disadvantages in that it takes a long time to manufacture rubber or plastic products, and the overall manufacturing efficiency is poor.
本考案に係るゴムまたはプラスチックの遠心成形装置は
、上述の点に鑑みて案出されたものであり、回転金型の
開口部にバッキングを介して固定蓋を設け、該固定蓋に
液状ゴムまたはプラスチックの流し込み口と真空引き口
とを設け、回転金型には成形時の真空度よりも高真空の
もとで開通するバルブを設けたことを特徴とする構成で
ある。The centrifugal molding device for rubber or plastic according to the present invention was devised in view of the above points, and a fixed lid is provided at the opening of the rotary mold via a backing, and liquid rubber or The structure is characterized in that a plastic pouring port and a vacuum port are provided, and the rotary mold is provided with a valve that opens under a higher vacuum than the vacuum level during molding.
以下図面により本考案を説明する。The present invention will be explained below with reference to the drawings.
第１図において、１は両端開口の横型の回転金型であり
、回転ロール２，２に支承されている。In FIG. 1, reference numeral 1 denotes a horizontal rotary mold with openings at both ends, which is supported by rotary rolls 2, 2.
この回転金型１は通電加熱式の加熱炉３内に収納されて
いる。This rotary mold 1 is housed in a heating furnace 3 of an electrical heating type.
４１は金型一端の開口１１を閉塞せる固定蓋であり、金
型開口１１にラビリンスバッキング５１を介して封止さ
れている。A fixed lid 41 closes the opening 11 at one end of the mold, and is sealed to the mold opening 11 via a labyrinth backing 51.
この固定蓋４１には、ホッパー６の出口６１が連結され
ている。An outlet 61 of the hopper 6 is connected to the fixed lid 41.
４２は金型他端の開口１２を閉塞せる固定蓋であり、金
型開口１２にラビリンスバッキング５２を介して封止さ
れている。A fixed lid 42 closes the opening 12 at the other end of the mold, and is sealed to the mold opening 12 via a labyrinth backing 52.
この固定蓋４２には真空引きロアが設けられている。This fixed lid 42 is provided with a vacuum lower.
８は金型１に設けられたバルブであり、金型１内の真空
度を特に高真空としたときに、開通する構造である。A valve 8 is provided in the mold 1 and has a structure that opens when the degree of vacuum in the mold 1 is set to a particularly high vacuum.
例えば、第２図に示すように、外気流入用溝８１を有す
る栓体８０を金型側面の孔８２に装着し、圧縮バネ８３
の応力によって、栓体８０のシール用ヘッド８０１を金
型側面孔８２のシール面８２０に圧接させた構造である
。For example, as shown in FIG. 2, a stopper 80 having an outside air inflow groove 81 is attached to a hole 82 on the side of the mold, and a compression spring 83 is inserted into the hole 82.
This structure has a structure in which the sealing head 801 of the plug body 80 is brought into pressure contact with the sealing surface 820 of the mold side hole 82 by the stress.
このバルブ８において、金型１内の真空度が一定の高真
空度に達すると、真空吸引力ｆが圧縮バネ８３に打ち勝
って栓体８０がｎ方向に移動し、外気流入用溝８１より
金型１内に空気が流入する。In this valve 8, when the degree of vacuum in the mold 1 reaches a certain high degree of vacuum, the vacuum suction force f overcomes the compression spring 83 and the stopper 80 moves in the n direction, and the metal is removed from the outside air inflow groove 81. Air flows into mold 1.
本考案装置は、例えば、ウレタンゴム製品の製造に用い
ることができる。The device of the present invention can be used, for example, to manufacture urethane rubber products.
この製造にあたっては、金型１を３００〜３０００ｒｐ
ｍで高速回転させ、真空引きロアから真空引きを行うと
共に、ホッパー６から、所定量の液状ウレタンゴムを回
連金型１内に流し込む、金型１内において、液状ウレタ
ンゴム中の気泡が、遠心力に分離され、この分離気泡が
真空によって直に、吸引除去される。In this manufacturing, the mold 1 is heated at 300 to 3000 rpm.
The air bubbles in the liquid urethane rubber in the mold 1 are rotated at high speed at a high speed of m, and a vacuum is drawn from the vacuum lower, and a predetermined amount of liquid urethane rubber is poured from the hopper 6 into the continuous mold 1. The separated air bubbles are separated by centrifugal force and are directly sucked away by vacuum.
上記の流し込みを終了したのちは、加熱炉３の通電加熱
を行い、金型１を加熱して、ゴムを加硫する。After the above-mentioned pouring is completed, the heating furnace 3 is heated with electricity, the mold 1 is heated, and the rubber is vulcanized.
この加硫中においても、金型１の回転並びに真空引きは
継続され、加硫時間は通常、１８０〜ｂ〜川分である。Even during this vulcanization, the rotation of the mold 1 and the evacuation are continued, and the vulcanization time is usually 180 to 180 minutes.
加硫終了後は、金型１の回転を停止腰加硫製品を金型１
内から取出し、これにて、作業を終了する。After vulcanization, stop the rotation of mold 1 and move the vulcanized product to mold 1.
Take it out from inside and finish the work.
上記取出しに先立ち、金型１内を、上記真空引き時の真
空度よりも高真空に真空引きすれば、バルブ８の開通に
より、バルブ８より空気を流入させることができ、加硫
製品を容易に離型できる。Prior to the above-mentioned ejection, if the inside of the mold 1 is evacuated to a higher degree of vacuum than the vacuum level at the time of evacuation mentioned above, air can be caused to flow in through the valve 8 by opening the valve 8, and the vulcanized product can be easily processed. Can be released from the mold.
第３図は本考案の別実施例を示し、回転金型１に上端開
口１０の縦金型を使用し、固定蓋４０にホッパー６の出
口６１を連結し、かつ真空引きロアを設けた構成である
。FIG. 3 shows another embodiment of the present invention, in which a vertical mold with an upper opening 10 is used as the rotary mold 1, an outlet 61 of the hopper 6 is connected to the fixed lid 40, and a vacuum lower is provided. It is.
第３図において、５０はラビリンスパツキンを、８はバ
ルブを、３は加熱炉をそれぞれ示している。In FIG. 3, 50 indicates a labyrinth packing, 8 indicates a valve, and 3 indicates a heating furnace.
本考案に係るゴムまたはプラスチックの遠心成形装置は
、上記した通り、回転金型の蓋に真空引き口を設けた構
成であり、脱泡を遠心力分離のみではなく、吸引分離に
よっても行い得るから脱泡のための金型回転時間を短縮
でき、製品の製造能率の向上を図ることができる。As mentioned above, the rubber or plastic centrifugal molding apparatus according to the present invention has a structure in which a vacuum port is provided in the lid of the rotary mold, and defoaming can be performed not only by centrifugal force separation but also by suction separation. The mold rotation time for defoaming can be shortened, and product manufacturing efficiency can be improved.
また、成形後は、型内を成形特の真空度よりも高真空に
真空引きするだけで、成形品を離型てき、離型が容易で
ある。Moreover, after molding, the molded product can be released from the mold simply by evacuating the inside of the mold to a higher vacuum than the vacuum level required for molding, and the mold can be easily released.
第１図は本考案に係る遠心成形装置を示す説明図、第２
図は本考案において、回転金型に設けたバルブを示す説
明図、第３図は本考案の別実施例を示す説明図である。
図において、１は回転金型、１０，１１．１２は開口部
、４０，４１．４２は固定蓋、５０，５１．５２はラビ
リンスバッキング、６１は流し込み口、７は真空引き口
である。Fig. 1 is an explanatory diagram showing a centrifugal molding device according to the present invention, Fig. 2
The figure is an explanatory diagram showing a valve provided in a rotary mold according to the present invention, and FIG. 3 is an explanatory diagram showing another embodiment of the present invention. In the figure, 1 is a rotary mold, 10, 11.12 are openings, 40, 41.42 are fixed lids, 50, 51.52 are labyrinth backings, 61 is a pouring port, and 7 is a vacuum port.
Claims (1)
該固定蓋に液状ゴムまたはプラスチックの流し込み口と
真空引き口とを設け、回転金型には成形時の真空度より
も高真空のもとで開通するバルブを設けたことを特徴と
するゴムまたはプラスチックの遠心成形装置。A fixed lid is provided at the opening of the rotary mold via a backing,
The fixed lid is provided with a liquid rubber or plastic pouring port and a vacuum port, and the rotary mold is provided with a valve that opens under a higher vacuum than the degree of vacuum during molding. Plastic centrifugal molding equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14851879U JPS607128Y2 (en) | 1979-10-25 | 1979-10-25 | Centrifugal molding equipment for rubber or plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14851879U JPS607128Y2 (en) | 1979-10-25 | 1979-10-25 | Centrifugal molding equipment for rubber or plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5666418U JPS5666418U (en) | 1981-06-03 |
| JPS607128Y2 true JPS607128Y2 (en) | 1985-03-09 |
Family
ID=29379647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14851879U Expired JPS607128Y2 (en) | 1979-10-25 | 1979-10-25 | Centrifugal molding equipment for rubber or plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS607128Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59229308A (en) * | 1983-05-19 | 1984-12-22 | Rohm Co Ltd | Centrifugal defoaming process and its device |
| US8617453B2 (en) | 2010-04-20 | 2013-12-31 | Kaga Sangyo Co., Ltd. | Molding method and mold therefor |
-
1979
- 1979-10-25 JP JP14851879U patent/JPS607128Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5666418U (en) | 1981-06-03 |
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