JP2005047131A - Method and apparatus for molding molded product - Google Patents
Method and apparatus for molding molded product Download PDFInfo
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Abstract
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本発明は、真空フィルム使用のクローズドモールド法によるＦＲＰ構造物等の真空含浸成形方法及び成形装置に関するものである。 The present invention relates to a vacuum impregnation molding method for FRP structures and the like by a closed mold method using a vacuum film, and a molding apparatus.
従来の真空含浸成形は次のように行われた。
合成樹脂の進入溝が設けられた成形型の表面に、第１強化繊維基材層、芯材層、第２強化繊維基材層からなる積層体をこの順に積層し、さらにこの積層体の上に樹脂拡散媒体を配置した後、これらの全体をバッグフィルムで覆い、次にバッグフィルムで覆われた内部を大気圧よりも低い状態にした後、マトリックス樹脂を前記成形型の進入溝と前記樹脂拡散媒体とから、同時に前記積層体の強化繊維基材層内に含浸させることにより、前記第１及び第２強化繊維基材層と前記芯材層とを一体化させる（例えば、特許文献１参照）。
また、比較的大型のＦＲＰ構造体の成形法もある（例えば、特許文献２参照）。
A laminate comprising a first reinforcing fiber base layer, a core material layer, and a second reinforcing fiber base layer is laminated in this order on the surface of the molding die provided with a synthetic resin entry groove, and further on the laminate. After the resin diffusion medium is disposed on, the whole is covered with a bag film, and then the interior covered with the bag film is brought to a state lower than atmospheric pressure, and then the matrix resin is used as the entrance groove of the mold and the resin. The first and second reinforcing fiber base layers and the core material layer are integrated by simultaneously impregnating the reinforcing fiber base layer of the laminate from the diffusion medium (see, for example, Patent Document 1). ).
There is also a method for forming a relatively large FRP structure (for example, see Patent Document 2).
従来の真空含浸成形法は、バッグフィルム（本発明の真空フィルム）が一重であるため、成形過程で真空フィルムや周辺のシール部等に真空漏れが生じると、次の問題が発生する。
１）樹脂注入・含浸時に真空漏れ箇所があると、気泡を巻き込んで成形物に欠陥が発生する。
２）樹脂注入・含浸終了後に真空漏れが生じると、樹脂含浸部をバッグフィルム（真空フィルム）外から型面に押さえつけていた圧力が失われ、積層体（強化材）や樹脂拡散媒体（樹脂浸透媒体）等のスプリングバックにより、成形厚さが所定厚さより増すとともに、樹脂内部に潜在していたスチレンガス等の気泡が成長し、成形物に微細な気泡が発生する。
また、ＦＲＰ構造物が大規模になると、真空フィルムを結合したり、周辺のシール長さが長くなり、気密漏れの発生する確率が多くなり、また、機密漏れが発生した場合、気密漏れ箇所を発見するのが困難となるという問題がある。
更に、真空漏れが発生しなくても、樹脂注入・含浸終了後に不必要な樹脂供給を避けるために、真空吸引を緩めると、積層体（強化材）や樹脂拡散媒体（樹脂含浸媒体）等によるスプリングバックにより、押し付け圧力が下がって、樹脂内部の気泡が成長しやすくなるという問題がある。
In the conventional vacuum impregnation molding method, since the bag film (the vacuum film of the present invention) is a single layer, the following problems occur when a vacuum leak occurs in the vacuum film or the peripheral seal portion during the molding process.
1) If there is a vacuum leak at the time of resin injection / impregnation, bubbles are involved and defects occur in the molded product.
2) If a vacuum leak occurs after resin injection / impregnation is completed, the pressure holding the resin-impregnated part against the mold surface from the outside of the bag film (vacuum film) is lost, and the laminate (reinforcing material) or resin diffusion medium (resin penetration) The spring back of the medium) increases the molding thickness beyond a predetermined thickness, and bubbles such as styrene gas that have hidden inside the resin grow to generate fine bubbles in the molded product.
In addition, when the FRP structure becomes large, the vacuum film is joined, the peripheral seal length becomes long, and the probability of airtight leakage increases. There is a problem that it is difficult to find.
Furthermore, even if vacuum leakage does not occur, in order to avoid unnecessary resin supply after resin injection / impregnation, if vacuum suction is loosened, it may be caused by a laminate (strengthening material) or a resin diffusion medium (resin-impregnated medium). Due to the springback, the pressing pressure is lowered, and there is a problem that bubbles inside the resin are likely to grow.
本発明は、上記のような問題点を解消するためになされたもので、樹脂注入・含浸時及び樹脂注入・含浸終了後の圧締・成形時に真空漏れにより成形物に欠陥が発生するのを防止し、欠陥のない成形物を得ることのできる成形物の成形方法を得ること、及び成形装置を得ることを目的とする。
また、樹脂注入・含浸時に不必要な樹脂の供給を避けることができるとともに、樹脂注入・含浸後の圧締・成形時に適正な圧締め、成形ができる成形物の成形方法を得ること及び成形装置を得ることを目的とする。
The present invention has been made to solve the above-described problems, and it is possible to prevent defects in a molded product due to vacuum leakage during resin injection / impregnation and during pressing / molding after completion of resin injection / impregnation. An object of the present invention is to obtain a molding method and a molding apparatus that can prevent and obtain a molding without defects.
Further, it is possible to avoid unnecessary supply of resin at the time of resin injection / impregnation, and to obtain a molding method and a molding apparatus that can perform proper pressing and molding at the time of pressing / molding after resin injection / impregnation The purpose is to obtain.
本発明の成形物の成形方法は、強化材を載置した成形型の成形部を第１の真空フィルムで覆い、第１の真空フィルムの周辺部をシールする工程と、更に、第２の真空フィルムで、第１の真空フィルムを覆い、第２の真空フィルムの周辺部をシールする工程と、第１の脱気手段で第１の真空フィルム内の成形型の成形部を脱気する工程と、樹脂注入手段により、成形型の成形部に樹脂を注入し、強化材に含浸させる工程と、第１の脱気手段の動作を停止し、第１のフィルム内の脱気を停止する工程と、遅くとも第１の脱気手段を停止する前に、第２の脱気手段を動作させ、第２の真空フィルム内を脱気する工程と、第２の脱気手段の第２のフィルム内の脱気により、成形物を圧締め、成形する圧締め、成形工程とを含むものである。 The molding method of the present invention includes a step of covering a molding part of a molding die on which a reinforcing material is placed with a first vacuum film, sealing a peripheral part of the first vacuum film, and a second vacuum. Covering the first vacuum film with the film and sealing the peripheral portion of the second vacuum film; and degassing the molding portion of the mold in the first vacuum film with the first degassing means; A step of injecting a resin into the molding part of the mold by the resin injection means and impregnating the reinforcing material; a step of stopping the operation of the first degassing means and stopping the degassing in the first film; Before stopping the first degassing means at the latest, operating the second degassing means to degas the second vacuum film, and the second degassing means in the second film The degassing includes pressing the molded product, pressing the molded product, and a molding process.
また、本発明の成形物の成形方法は、第１の脱気手段による第１のフィルム内の脱気工程又は樹脂注入、含浸工程において、真空漏れ検知手段が第１の真空フィルム内の真空漏れを検知したとき、第２の脱気手段が動作していない場合は、第２の脱気手段を動作させるものである。 Further, the molding method of the present invention is such that, in the degassing step in the first film or the resin injection / impregnation step by the first degassing means, the vacuum leak detecting means is the vacuum leak in the first vacuum film. When the second deaeration unit is not operating when the second is detected, the second deaeration unit is operated.
また、本発明の成形物の成形方法は、第１の真空フィルムで、成形型の成形部を覆い、第１の真空フィルムの周辺部をシールする工程と、更に、第２の真空フィルムで、第１の真空フィルムを覆い、第２の真空フィルムの周辺部をシールする工程と、第１の脱気手段で第１の真空フィルム内の成形型の成形部を脱気する工程と、樹脂注入手段により、成形型の成形部に樹脂を注入し、強化材に含浸させる工程と、樹脂注入手段の開閉弁を閉じ、成形物を圧締め、成形する圧締め、成形工程とを含み、第１の脱気手段の脱気工程、樹脂注入手段による樹脂注入、含浸工程及び前記圧締め、成形工程において、真空漏れ検知手段が第１の真空フィルム内の真空漏れを検知した時、第２の脱気手段を動作させるものである。 Moreover, the molding method of the molded product of the present invention includes a step of covering the molding part of the mold with the first vacuum film and sealing the peripheral part of the first vacuum film, and further with the second vacuum film, Covering the first vacuum film and sealing the periphery of the second vacuum film; degassing the molding part of the mold in the first vacuum film by the first degassing means; and resin injection Means for injecting resin into the molding part of the molding die and impregnating the reinforcing material, closing the on-off valve of the resin injection means, pressing the molded product, pressing to mold, and molding step, When the vacuum leak detecting means detects a vacuum leak in the first vacuum film in the deaeration process of the deaeration means, the resin injection by the resin injection means, the impregnation process and the pressing and molding process, the second degassing means Qi means are operated.
また、本発明の成形装置は、前記成形型、前記第１の真空フィルム、前記第２の真空フィルム、前記第１のシール手段、前記第２のシール手段、前記第１の脱気手段、前記第２の脱気手段、前記樹脂注入手段及び／又は前記真空漏れ検知手段を備え、前記の各成形物の成形方法を行うものである。 Further, the molding apparatus of the present invention includes the molding die, the first vacuum film, the second vacuum film, the first sealing means, the second sealing means, the first degassing means, A second deaeration unit, the resin injection unit, and / or the vacuum leak detection unit are provided, and the molding method for each molded product is performed.
本発明の成形物の成形法によると、第１の脱気手段により、第１の真空フィルム内を脱気し、樹脂を注入、含浸させ、第１の脱気手段を停止させるが、遅くとも第１の脱気手段を停止する前に、第２の脱気手段を動作させ、第２の真空フィルム内を脱気するので、第２の脱気手段を動作させた以降で、第１の真空フィルム内に真空漏れが生じても、真空漏れによる問題の発生を防止できる。即ち、樹脂注入、含浸工程においては、気泡を巻き込むことにより成形物に欠陥が生じるのを防止でき、圧締め、成形工程においては、適正な圧締め、成形が可能となる。
また、真空漏れが生じなくても、圧締め、成形工程において、不必要な樹脂の供給がなく、かつ、適正な圧締め、成形が可能となる。
According to the molding method of the molded product of the present invention, the first degassing means evacuates the inside of the first vacuum film, injects and impregnates the resin, and stops the first degassing means. Before stopping the first degassing means, the second degassing means is operated, and the inside of the second vacuum film is degassed. Therefore, after the second degassing means is operated, the first vacuum Even if a vacuum leak occurs in the film, problems due to the vacuum leak can be prevented. That is, in the resin injection and impregnation process, it is possible to prevent defects from occurring in the molded product by entraining air bubbles. In the pressing and molding processes, proper pressing and molding are possible.
Even if no vacuum leakage occurs, unnecessary resin supply is not required in the pressing and molding process, and proper pressing and molding can be performed.
また、本発明の成形物の成形法によると、第１の脱気手段による第１のフィルム内の脱気工程又は樹脂注入、含浸工程において、真空漏れ検知手段が第１の真空フィルム内の真空漏れを検知したとき、第２の脱気手段が動作していない場合は、第２の脱気手段を動作させるので、第２の脱気手段を動作させていないときに第１フィルム内の真空漏れが生じても、確実に成形物に欠陥が生じることを防止できる。 Further, according to the molding method of the molded product of the present invention, in the degassing step or the resin injection / impregnation step in the first film by the first degassing means, the vacuum leak detecting means is a vacuum in the first vacuum film. When the leak is detected, if the second degassing means is not operating, the second degassing means is operated, so the vacuum in the first film is not operated when the second degassing means is not operated. Even if leakage occurs, it is possible to reliably prevent defects in the molded product.
また、本発明の成形物の成形法によると、第１の脱気手段により、第１の真空フィルム内を脱気し、樹脂を注入、含浸させ、樹脂注入手段の開閉弁を閉じた後、成形物の圧締め、成形を行うが、これらの工程において、真空漏れ検知手段が第１の真空フィルム内の真空漏れを検知したとき、第２の脱気手段を動作させるので、成形物に真空漏れによる欠陥が生じることがない。また、第２の脱気手段は必要がある場合にのみ動作させればよく、経済的である。 Further, according to the molding method of the molded product of the present invention, after the first vacuum film is degassed by the first degassing means, the resin is injected and impregnated, and the on-off valve of the resin injection means is closed, The molded product is pressed and molded. In these steps, when the vacuum leak detecting means detects a vacuum leak in the first vacuum film, the second degassing means is operated, so that the molded product is vacuumed. There will be no defects due to leakage. Further, the second degassing means may be operated only when necessary, which is economical.
また、本発明の成形装置によると、前記成形型、前記第１の真空フィルム、前記第２の真空フィルム、前記第１のシール手段、前記第２のシール手段、前記第１の脱気手段、前記第２の脱気手段、前記樹脂注入手段及び／又は前記真空漏れ検知手段を備え、前記の各成形物の成形方法を行うので、真空漏れによる欠陥のない成形物が得られる及び／又は不必要な樹脂の供給がなく、かつ、適正な圧締め、成形が可能な成形装置が得られる。 According to the molding apparatus of the present invention, the molding die, the first vacuum film, the second vacuum film, the first sealing means, the second sealing means, the first degassing means, Since the second degassing means, the resin injection means and / or the vacuum leak detection means are provided and the molding method of each molding is performed, a molding free from defects due to vacuum leakage can be obtained and / or incomplete. A molding apparatus that does not supply the necessary resin and can perform proper pressing and molding can be obtained.
図１は、真空含浸成形の実施を説明する真空含浸成形装置の断面図であり、図２は、真空含浸成形装置による真空脱気の開始から圧締・成形までを示すタイムチャート図である。
図１において、成形物の成形装置である真空含浸成形装置は、樹脂注入手段１と、脱気手段２と、成形部を有し、樹脂注入手段１により成形部に樹脂が注入される成形型４と、成形型４の成形部に載置した後述の強化材５等を覆う真空フィルム７と、成形型４の周辺部で、成形部を真空フィルム７で外部からシールするシール手段１０とから主として構成される。
真空フィルム７は、バッグフィルムともいわれ気密性のあるフィルムであり、ナイロンフィルム、ポリエステルフィルム、ポリプロピレンフィルム、ポリイミドフィルム等が使われる。
FIG. 1 is a cross-sectional view of a vacuum impregnation molding apparatus for explaining the implementation of vacuum impregnation molding, and FIG. 2 is a time chart showing from the start of vacuum degassing to pressing and molding by the vacuum impregnation molding apparatus.
In FIG. 1, a vacuum impregnation molding apparatus, which is a molding apparatus, includes a resin injection means 1, a deaeration means 2, and a molding part, and a molding die in which resin is injected into the molding part by the resin injection means 1. 4, a vacuum film 7 that covers a reinforcing
The vacuum film 7 is also called a bag film and is an airtight film, and a nylon film, a polyester film, a polypropylene film, a polyimide film, or the like is used.
ここで、真空フィルム７は、成形型４の成形部を直接的に覆う第１の真空フィルム７ａと、第１のフィルム７ａを更に覆う、即ち、成形部を第１の真空フィルム７ａと併せて二重に覆うことにより成形部を間接的に覆う第２の真空フィルム７ｂとからなる。
また、樹脂注入手段１は、樹脂を貯留する樹脂タンク（図示省略）と、樹脂タンクに接続する開閉弁（図示省略）付きの注入管とからなり、注入管が第１の真空フィルム７ａ、第２の真空フィルム７ｂを、それぞれ、貫通して（貫通部は密封する）、先端部が第１の真空フィルム７ａの覆い部分内に開口する。
また、脱気手段２は、第１の真空フィルム７ａで覆われた成形型４の成形部の真空脱気を行う第１の脱気手段２ａと、第１の真空フィルム７ａと第２の真空フィルム７ｂ間の真空脱気を行う第２の脱気手段２ｂとからなり、第１の脱気手段２ａと第２の脱気手段２ｂは、真空ポンプ及びこの真空ポンプに配管接続されたトラップを共通とし、このトラップから、それぞれ、開閉弁を備えた配管を有する。なお、トラップには脱気手段２を動作させたときの真空度を検知する圧力計を設置する。
第１の脱気手段２ａと第２の脱気手段２ｂは、それぞれ、真空ポンプと圧力計を設けたトラップとを開閉弁を備えた配管で接続してもよい。
Here, the vacuum film 7 further covers the first vacuum film 7a and the first film 7a that directly cover the molding portion of the mold 4, that is, the molding portion is combined with the first vacuum film 7a. It consists of the
The resin injection means 1 includes a resin tank (not shown) for storing the resin, and an injection pipe with an on-off valve (not shown) connected to the resin tank. The injection pipe includes the first vacuum film 7a and the first vacuum film 7a. Each of the two
The degassing means 2 includes a first degassing means 2a for performing vacuum degassing of the molding portion of the mold 4 covered with the first vacuum film 7a, and a first vacuum film 7a and a second vacuum. The second degassing means 2b for performing vacuum degassing between the
Each of the first deaeration unit 2a and the
更に、シール手段１０は、成形部を直接覆う第１の真空フィルム７ａでシールする第１のシール手段１０ａと、第１の真空フィルム７ａと第２の真空フィルム７ｂ間を第２の真空フィルム７ｂでシールする第２のシール手段とからなる。
そこで、第１の脱気手段２ａの配管は、第１の真空フィルム７ａ、第２の真空フィルム７ｂを貫通し（貫通部は密封する）、その脱気先端部は、第１の真空フィルム７ａの覆い部分内に開口し、第２の脱気手段２ｂの配管は、第２の真空フィルム７ｂを貫通し（貫通部は密封する）、その脱気先端部は、第１の真空フィルム７ａと第２の真空フィルム７ｂ間に開口する。また、第２の真空フィルム７ｂは、第１の真空フィルム７ａのシール部である第１のシール部を含めて覆い、成形型４の、より外周側の第２のシール部でシールされる。
Further, the sealing means 10 includes a first sealing means 10a for sealing with a first vacuum film 7a that directly covers the molding portion, and a
Therefore, the piping of the first degassing means 2a penetrates the first vacuum film 7a and the
次に、本真空含浸装置により、成形物の成形動作を説明する。
まず、成形型４の準備工程として、強化材５等の充填、真空フィルム７の設置及び真空フィルム７の周辺部のシールを次のように行う。
１）成形型４の成形部に強化材５を載置する。
２）強化材５の上に樹脂浸透媒体６を載置する。
３）成形型４の成形部を樹脂浸透媒体６の上から第１の真空フィルム７ａで覆う。
４）第１のシール手段１０ａにより、第１の真空フィルム７ａの周辺部をシールする。
５）第１の真空フィルム７ａ上に通気媒体８を載置する。
６）第１の真空フィルム７ａのシール部を含めて、通気媒体８の上から第１の真空フィルム７ａを第２のフィルム７ｂで覆う。
７）第２のシール手段１０ｂにより、第２の真空フィルム７ｂの周辺部をシールする。
同時に、注入樹脂の準備工程として、所定の樹脂を所定量樹脂タンクに貯留する。
ここで、強化材５は、樹脂含浸により成形物を一体形成し、強度を増すもので、炭素繊維、ガラス繊維、アラミド繊維、ポリアミド繊維等の織物やマットである。
また、樹脂浸透媒体６は、第１の真空フィルム７ａ内で、成形型の成形部内の注入樹脂の拡散を促進するもので、樹脂や金属のメッシュ状のシート等を使う。樹脂浸透媒体６は、成形物の一部としてもよく、また、成形後に成形物から取り外してもよい。
また、通気媒体８は、第２の脱気手段２ｂにより第２の真空フィルム７ｂ内の空気の吸引を容易とするもので、同じく樹脂や金属のメッシュ状のシート等を使う。
また、注入樹脂は、成形物のマトリックス樹脂となるものであり、エポキシ樹脂、不飽和ポリエステル樹脂等の熱硬化性樹脂や、ナイロン樹脂、ポリエステル樹脂、ＡＢＳ樹脂、等の熱可塑性樹脂である。
Next, the molding operation of the molded product using the vacuum impregnation apparatus will be described.
First, as a preparation process for the mold 4, filling of the reinforcing
1) The reinforcing
2) The resin permeation medium 6 is placed on the reinforcing
3) Cover the molding part of the molding die 4 with the first vacuum film 7a from above the resin permeation medium 6.
4) The periphery of the first vacuum film 7a is sealed by the first sealing means 10a.
5) The ventilation medium 8 is placed on the first vacuum film 7a.
6) The first vacuum film 7a is covered with the
7) The periphery of the
At the same time, a predetermined amount of resin is stored in a predetermined amount of resin tank as a step of preparing the injected resin.
Here, the reinforcing
The resin permeation medium 6 promotes the diffusion of the injected resin in the molding part of the mold within the first vacuum film 7a, and uses a resin or metal mesh sheet. The resin permeation medium 6 may be a part of the molded product or may be removed from the molded product after molding.
The ventilation medium 8 facilitates the suction of the air in the
The injection resin serves as a matrix resin of the molded product, and is a thermosetting resin such as an epoxy resin or an unsaturated polyester resin, or a thermoplastic resin such as a nylon resin, a polyester resin, or an ABS resin.
次いで、成形型４の成形部への樹脂注入、強化材５等への樹脂の含浸、全体の圧締・成形を次のように行う（図２のタイムチャート参照）。
１）真空ポンプを動作させ、それぞれの開閉弁を開き、第１の脱気手段２ａ及び第２の脱気手段２ｂを動作させる。第１の真空フィルム７ａ内が所定の真空度に達したのを圧力計等で検知するか、または、所定の真空度が得られる脱気開始から所定の時間経過まで真空脱気を行う。（図２の脱気工程であり、図２では、脱気開始から所定の時間ｔ１経過まで実施）
２）第１の真空フィルム７ａ内が所定の真空度に達したのを検知するか、または、所定の真空度が得られる脱気開始から所定の時間経過後に、樹脂タンクの注入管の開閉弁を開け、樹脂の注入・含浸を開始し、所定量の樹脂が注入されるまで、または、所定量の樹脂が注入される所定時間行う。その後第１の脱気手段２ａの開閉弁を閉じ、第１の脱気手段２ａを停止し、次いで、樹脂タンクの注入管の開閉弁を閉じる。（図２の樹脂注入・含浸工程であり、図２では、樹脂導入ｔ１から樹脂供給終了ｔ２まで、所定時間実施）
但し、第１の脱気手段２ａの開閉弁を閉じるのと樹脂タンクの注入管の開閉弁を閉じるのとは、ほぼ同時でも、または樹脂タンクの注入管の開閉弁を閉じる方を先としてもよい。
この間、第２の脱気手段は真空脱気の動作を続ける。但し、第２の脱気手段は、所定の真空度が維持できる場合は、止めてもよいし、間欠的に動作させてもよい。
３）その後、第２の脱気手段２ｂを樹脂のゲル化を確認するまで、または、樹脂がゲル化する所定時間動作させ、圧締・成形する。その後、第２の脱気手段２ｂを停止する。（図２の圧締・成形工程であり、図２では、ｔ２からｔ３まで、所定の時間実施）
この工程でも、第２の脱気手段は、所定の真空度が維持できる場合は、止めてもよいし、間欠的に動作させてもよい。
Next, the resin injection into the molding part of the molding die 4, the impregnation of the reinforcing
1) The vacuum pump is operated, the respective on-off valves are opened, and the first deaeration unit 2a and the
2) An on-off valve of the injection pipe of the resin tank after detecting that the inside of the first vacuum film 7a has reached a predetermined degree of vacuum, or after the elapse of a predetermined time from the start of deaeration at which a predetermined degree of vacuum is obtained Is opened, resin injection / impregnation is started, and is performed until a predetermined amount of resin is injected or for a predetermined time during which a predetermined amount of resin is injected. Thereafter, the opening / closing valve of the first degassing means 2a is closed, the first degassing means 2a is stopped, and then the opening / closing valve of the injection pipe of the resin tank is closed. (This is the resin injection / impregnation step in FIG. 2. In FIG. 2, a predetermined time period from the resin introduction t1 to the resin supply end t2 is implemented)
However, the closing of the opening / closing valve of the first degassing means 2a and the closing of the opening / closing valve of the injection pipe of the resin tank may be almost simultaneous or the direction of closing the opening / closing valve of the injection pipe of the resin tank first. Good.
During this time, the second degassing means continues the vacuum degassing operation. However, the second degassing means may be stopped or operated intermittently when a predetermined degree of vacuum can be maintained.
3) Thereafter, the second deaeration means 2b is operated for a predetermined time until the resin gels or until the resin gels, and is pressed and molded. Then, the 2nd deaeration means 2b is stopped. (This is the pressing / molding process of FIG. 2, and in FIG. 2, it is performed for a predetermined time from t2 to t3)
Also in this step, the second degassing means may be stopped or operated intermittently when a predetermined degree of vacuum can be maintained.
このような成形装置による成形方法によれば、成形装置が第１の真空フィルム７ａと第１の真空フィルム７ａを覆う第２の真空フィルム７ｂを有し、脱気工程及び樹脂注入・含浸工程においては、両真空フィルム７ａ、７ｂ内の脱気を行っているので、第１の真空フィルム７ａの真空フィルム自体及び／又はシール部に真空漏れが生じても、第２の真空フィルム７ｂ内の脱気により、脱気工程における第１の真空フィルム７ａ内の脱気は可能であり、また、樹脂注入・含浸工程においては、気泡を巻き込んで成形物に欠陥が生じることはない。即ち、成形過程で真空フィルム７や周辺のシール部の真空漏れによる問題の発生が著しく減少する。
また、樹脂注入・含浸工程後の圧締・成形工程において、第１の真空フィルム７ａの真空フィルム自体及び／又はシール部に真空漏れが生じても、第２の真空フィルム７ｂ内の脱気により、第１の真空フィルム７ａ内の成形物は第２の真空フィルム７ｂ外の外圧により、型面に押さえつけられ、正常に圧締め、成形される。即ち、成形過程で真空フィルム７や周辺のシール部の真空漏れによる問題の発生が著しく減少する。
According to the molding method by such a molding apparatus, the molding apparatus has the first vacuum film 7a and the
Further, in the pressing / molding step after the resin injection / impregnation step, even if a vacuum leak occurs in the vacuum film itself and / or the seal portion of the first vacuum film 7a, the
そこで、成形過程で真空フィルム７や周辺のシール部の真空漏れによる問題の発生が著しく減少するので、ＦＲＰ構造物のような大規模な成形物の成形において、真空フィルム７を結合したり、周辺のシール長さが長くなっても、気密漏れ箇所を発見する困難は、著しく減少する。 Therefore, since the occurrence of problems due to vacuum leakage of the vacuum film 7 and the peripheral seal portion is remarkably reduced in the molding process, the vacuum film 7 can be combined in the molding of a large-scale molded product such as an FRP structure, As the seal length increases, the difficulty of finding an airtight leak point is significantly reduced.
更に、第１の真空フィルム７ａに真空漏れの発生がなくても、圧締・成形工程において、第１の脱気手段２ａと第２の脱気手段２ｂを独立に動作させ、第１の脱気手段２ａを止めるが、第２の脱気手段２ｂは動作させており、即ち、第２の脱気手段２ｂにより第２の真空フィルム内を所定の真空度にすることにより、内外圧力差を所定の圧締・成形圧力に維持する。そこで、第１の脱気手段２ａを止めることにより、樹脂の不必要な供給がなくなり、また、第２の真空フィルム７ｂ外からの圧力により成形物は成形型に押付けられ、適正な圧締・成形が可能となる。
Furthermore, even if there is no occurrence of vacuum leakage in the first vacuum film 7a, the first degassing means 2a and the second degassing means 2b are operated independently in the press-clamping / forming process, and the first degassing means 2a is operated. Although the air means 2a is stopped, the second degassing means 2b is in operation, that is, the inside of the second vacuum film is brought to a predetermined degree of vacuum by the second degassing means 2b, whereby the internal / external pressure difference is reduced. Maintain the specified pressing and molding pressure. Therefore, by stopping the first degassing means 2a, unnecessary supply of resin is eliminated, and the molded product is pressed against the mold by the pressure from the outside of the
脱気工程及び樹脂注入・含浸工程において、第２の脱気手段２ｂを動作させ、所定の真空度を第１の脱気手段２ａの所定の真空度と同様になるように脱気動作させれば、第１の真空フィルム７ａに真空漏れが発生しても、早急に対処が可能となる。
また、開閉弁の開度を絞り、または真空モータを別にして、第２の脱気手段２ｂによる真空度を、第１の脱気手段２ａの達成真空度と同様とせずに、より大気圧に近くしてもよい。このようにしても、気密漏れの検知により動作を新規に開始するのではなく、対処が容易である。
In the degassing step and the resin injection / impregnation step, the second degassing means 2b is operated so that the predetermined vacuum degree is the same as the predetermined vacuum degree of the first degassing means 2a. For example, even if a vacuum leak occurs in the first vacuum film 7a, it can be dealt with immediately.
Further, the degree of vacuum by the second degassing means 2b is not made the same as the degree of vacuum achieved by the first degassing means 2a except that the opening degree of the on-off valve is reduced or the vacuum motor is separated. You may be close to. Even if it does in this way, it does not start operation newly by detection of an airtight leak, but a countermeasure is easy.
図２に示すように、上記では、第２の脱気手段２ｂは、第１の脱気手段２ａと同時に、脱気を開始しているが、必ずしも同時に脱気を開始しなくてもよく、遅くとも第１の脱気手段２ａを停止する前に動作させてもよい。このようにすれば、第２の脱気手段２ａを動作させた以降で、第１の真空フィルム７ａ内に真空漏れが生じても、真空漏れによる問題の発生を防止できる。即ち、樹脂注入、含浸工程においては、気泡を巻き込むことにより成形物に欠陥が生じるのを防止でき、圧締・成形工程においては、適正な圧締・成形が可能となる。
また、第２の脱気手段２ｂを第１の脱気手段２ａに遅れて動作させ、圧力計のような真空漏れ検知手段により第１の真空フィルム７ａ内の圧力を検知して（圧力計によりトラップ内の真空度の検知で可能）、真空漏れを検知した場合に、第２の脱気手段２ｂが動作していなければ、動作するようにしても同様な効果が得られる。
更に、第２の脱気手段２ｂは、準備しておくだけとし、真空漏れ検知手段により第１の真空フィルム７ａ内の圧力を検知して、真空漏れを検知した場合に、第２の脱気手段２ｂを動作するようにしても同様な効果が得られるとともに、経済的である。この場合は、真空漏れが生じない場合は、脱気手段２としては第１の脱気手段２ａのみ使用するので、所定量の樹脂が注入されたら開閉弁を閉じ、余計な樹脂の注入がないようにする。なお、圧締・成形工程においては、第１の脱気手段２ａは脱気継続、または脱気を停止するが、真空漏れがあり、第２の脱気手段２ｂを動作させた場合は、第１の脱気手段２ａは脱気を停止する。
As shown in FIG. 2, in the above, the second degassing means 2b starts degassing simultaneously with the first degassing means 2a, but it is not always necessary to start degassing simultaneously, You may make it operate | move before stopping the 1st deaeration means 2a at the latest. If it does in this way, after operating the 2nd deaeration means 2a, even if a vacuum leak arises in the 1st vacuum film 7a, generation | occurrence | production of the problem by a vacuum leak can be prevented. That is, in the resin injection and impregnation process, it is possible to prevent defects in the molded product by entraining bubbles, and in the pressing and molding process, proper pressing and molding can be performed.
Further, the second degassing means 2b is operated behind the first degassing means 2a, and the pressure in the first vacuum film 7a is detected by a vacuum leak detection means such as a pressure gauge (by the pressure gauge). (It is possible by detecting the degree of vacuum in the trap), and if the second deaeration means 2b is not operating when a vacuum leak is detected, the same effect can be obtained even if it operates.
Furthermore, the second deaeration means 2b is only prepared. When the vacuum leak detection means detects the pressure in the first vacuum film 7a and detects the vacuum leak, the second deaeration means 2b is prepared. Even if the
本成形物の成形方法及び成形装置において、各工程等における各手段の動作の制御は、タイマー、圧力計等の検知入力により、成形装置に備えられた制御手段である制御装置により予め導入された制御プログラムに基づいて行われる。また、タイマー、圧力計等の検知により、各手段の動作、開閉弁の開閉等を手動で行ってもよい。
また、本発明の成形物の成形方法及び成形装置は、第１の真空フィルム７ａと第１の真空フィルム７ａを更に覆う第２の真空フィルム７ｂとを有し、それぞれの内部を第１の脱気手段２ａ、第２の脱気手段２ｂで脱気できるようにしたこと及び各工程でのこれらの脱気手段２ａ、２ｂの動作タイミングに特徴があり、樹脂注入手段１、脱気手段２、シール手段１０及び成形に使用する材料等は、公知のもの及び公知の方法が広く利用できる。
In the molding method and molding apparatus of the present molded product, the control of the operation of each means in each process and the like is introduced in advance by a control device which is a control means provided in the molding apparatus by detection input of a timer, a pressure gauge and the like. This is done based on the control program. Further, the operation of each means, the opening / closing of the on-off valve, etc. may be performed manually by detection of a timer, a pressure gauge, or the like.
Moreover, the molding method and molding apparatus of the present invention have a first vacuum film 7a and a
本発明の成形物の成形方法及び成形装置は、ＦＲＰ構造物を成形する所謂真空含浸成形方法及び真空含浸成形装置として使用される。 The molding method and molding apparatus of the molded product of the present invention are used as a so-called vacuum impregnation molding method and vacuum impregnation molding apparatus for molding an FRP structure.
１ 樹脂注入手段、２ａ 第１の脱気手段、２ｂ 第２の脱気手段、
４ 成形型、５ 強化材、７ａ 第１の真空フィルム、７ｂ 第２の真空フィルム、１０ａ 第１のシール手段、１０ｂ 第２のシール手段。
1 resin injection means, 2a first degassing means, 2b second degassing means,
4 Mold, 5 Reinforcing material, 7a First vacuum film, 7b Second vacuum film, 10a First sealing means, 10b Second sealing means.
Claims (5)
第１の真空フィルムで、前記成形型の成形部を覆い、前記第１の真空フィルムの周辺部をシールする工程と、
第２の真空フィルムで、前記第１の真空フィルムを覆うことにより間接的に前記成形型の成形部を覆い、前記第２の真空フィルムの周辺部をシールする工程と、
次いで、第１の脱気手段で前記第１の真空フィルム内の前記成形型の成形部を脱気する工程と、
これに続き、樹脂注入手段により、前記成形型の成形部に樹脂を注入し、前記強化材に含浸させる工程と、
前記第１の脱気手段の動作を停止し、前記第１のフィルム内の脱気を停止する工程と、
遅くとも前記第１の脱気手段を停止する前に、前記第２の脱気手段を動作させ、前記第２の真空フィルム内を脱気する工程と、
さらに、前記第２の脱気手段の前記第２のフィルム内の脱気により、成形物を圧締め、成形する圧締め、成形工程と、
を含むことを特徴とする成形物の成形方法。 Placing the reinforcing material on the molding part of the mold,
A step of covering a molding portion of the mold with a first vacuum film and sealing a peripheral portion of the first vacuum film;
Covering the molding part of the mold indirectly by covering the first vacuum film with a second vacuum film, and sealing the peripheral part of the second vacuum film;
Next, degassing the molding part of the mold in the first vacuum film with a first degassing means;
Following this, a step of injecting resin into the molding part of the molding die by resin injection means and impregnating the reinforcing material,
Stopping the operation of the first degassing means, and stopping degassing in the first film;
Before stopping the first degassing means at the latest, operating the second degassing means to degas the inside of the second vacuum film;
Furthermore, by deaeration in the second film of the second degassing means, the molded product is clamped, a pressing to mold, a molding step,
A method for forming a molded product, comprising:
第１の真空フィルムで、前記成形型の成形部を覆い、前記第１の真空フィルムの周辺部をシールする工程と、
第２の真空フィルムで、前記第１の真空フィルムを覆うことにより間接的に前記成形型の成形部を覆い、前記第２の真空フィルムの周辺部をシールする工程と、
次いで、第１の脱気手段で前記第１の真空フィルム内の前記成形型の成形部を脱気する工程と、
これに続き、樹脂注入手段により、前記成形型の成形部に樹脂を注入し、前記強化材に含浸させる工程と、
次いで、前記樹脂注入手段の開閉弁を閉じ、前記第１の脱気手段は脱気継続又は脱気を停止し、成形物を圧締め、成形する圧締め、成形工程とを含み、
前記第１の脱気手段の脱気工程、前記樹脂注入手段による樹脂注入、含浸工程及び前記圧締め、成形工程において、真空漏れ検知手段が前記第１の真空フィルム内の真空漏れを検知した時、前記第２の脱気手段を動作させることを特徴とする成形物の成形方法。 Placing the reinforcing material on the molding part of the mold,
A step of covering a molding portion of the mold with a first vacuum film and sealing a peripheral portion of the first vacuum film;
Covering the molding part of the mold indirectly by covering the first vacuum film with a second vacuum film, and sealing the peripheral part of the second vacuum film;
Next, degassing the molding part of the mold in the first vacuum film with a first degassing means;
Following this, a step of injecting resin into the molding part of the molding die by resin injection means and impregnating the reinforcing material,
Next, the on-off valve of the resin injection means is closed, the first degassing means includes depressurization continuation or degassing, pressurizing and molding the molded product, and a molding process,
When the vacuum leak detection means detects a vacuum leak in the first vacuum film in the degassing step of the first degassing means, the resin injection by the resin injection means, the impregnation step, and the pressing and molding step. The method for molding a molded article, wherein the second deaeration means is operated.
The mold, the first vacuum film, the second vacuum film, the first sealing means, the second sealing means, the first degassing means, the second degassing means, and the resin A molding apparatus comprising: an injection unit and the vacuum leak detection unit, wherein the molding method according to claim 2 or 3 is performed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012045863A (en) * | 2010-08-27 | 2012-03-08 | Universal Shipbuilding Corp | Method for vacuum impregnation molding of frp product and device for manufacturing the same |
| JP2012218441A (en) * | 2011-04-05 | 2012-11-12 | Boeing Co:The | Method and device for manufacturing composite stiffener matching outline |
| US20170348920A1 (en) * | 2016-06-06 | 2017-12-07 | The Boeing Company | Method and System for Resin Infusing a composite Preform |
| WO2021186659A1 (en) * | 2020-03-19 | 2021-09-23 | 三菱重工業株式会社 | Method for molding composite material and apparatus for molding composite material |
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2003
- 2003-07-28 JP JP2003280911A patent/JP2005047131A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012045863A (en) * | 2010-08-27 | 2012-03-08 | Universal Shipbuilding Corp | Method for vacuum impregnation molding of frp product and device for manufacturing the same |
| JP2012218441A (en) * | 2011-04-05 | 2012-11-12 | Boeing Co:The | Method and device for manufacturing composite stiffener matching outline |
| US9604417B2 (en) | 2011-04-05 | 2017-03-28 | The Boeing Company | Method for making contoured composite stiffeners |
| US20170348920A1 (en) * | 2016-06-06 | 2017-12-07 | The Boeing Company | Method and System for Resin Infusing a composite Preform |
| JP2018020550A (en) * | 2016-06-06 | 2018-02-08 | ザ・ボーイング・カンパニーＴｈｅＢｏｅｉｎｇ Ｃｏｍｐａｎｙ | Method and system for infusing resin into composite preform |
| US11331864B2 (en) * | 2016-06-06 | 2022-05-17 | The Boeing Company | Method and system for resin infusing a composite preform |
| WO2021186659A1 (en) * | 2020-03-19 | 2021-09-23 | 三菱重工業株式会社 | Method for molding composite material and apparatus for molding composite material |
| JPWO2021186659A1 (en) * | 2020-03-19 | 2021-09-23 | ||
| JP7167382B2 (en) | 2020-03-19 | 2022-11-08 | 三菱重工業株式会社 | COMPOSITE MATERIAL FORMING METHOD AND COMPOSITE MATERIAL FORMING APPARATUS |
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| A300 | Withdrawal of application because of no request for examination |
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