JP2016221734A - Seal structure in VaRTM method - Google Patents

Seal structure in VaRTM method Download PDF

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JP2016221734A
JP2016221734A JP2015108084A JP2015108084A JP2016221734A JP 2016221734 A JP2016221734 A JP 2016221734A JP 2015108084 A JP2015108084 A JP 2015108084A JP 2015108084 A JP2015108084 A JP 2015108084A JP 2016221734 A JP2016221734 A JP 2016221734A
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sealant
bag film
vacuum bag
seal structure
resin injection
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JP6607553B2 (en
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寛 ▲徳▼冨
寛 ▲徳▼冨
Hiroshi Tokutomi
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Mitsubishi Aircraft Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a seal structure in a VaRTM method capable of surely holding a sealed state in a vacuum bag film by a sealant, when making inside of the vacuum bag film a vacuum state.SOLUTION: Peripheral surfaces of a resin injection pipe 13 and a suction pipe 14 are sealed by a pipe insertion part sealant 1 (second sealant) disposed on a sealant 15 (first sealant), then first expansion parts 1a are formed between the resin injection pipe 13 and the sealant 15, and between the suction pipe 14 and the sealant.SELECTED DRAWING: Figure 1

Description

本発明は、ＶａＲＴＭ（Vacuum Assisted Resin Transfer Molding：真空樹脂含浸製造）工法におけるシール構造に関する。   The present invention relates to a seal structure in a VaRTM (Vacuum Assisted Resin Transfer Molding) method.

ＶａＲＴＭ工法とは、強化繊維基材（ガラス繊維やカーボン繊維等）等の複合材からなる被成形物を成形する工法の一つであり、成形型上に積層した被成形物を真空バッグフィルムで覆い密封し、真空バッグフィルム内を真空状態とすることで、真空バッグフィルム内に樹脂を注入し、被成形物に対して樹脂含浸を行うものである。   The VaRTM method is one of methods for molding a molded article made of a composite material such as a reinforced fiber base material (glass fiber, carbon fiber, etc.), and the molded article laminated on a molding die is a vacuum bag film. By covering and sealing and making the vacuum bag film in a vacuum state, a resin is injected into the vacuum bag film and the object to be molded is impregnated with the resin.

ＶａＲＴＭ工法では、真空バッグフィルム内を真空状態とするために、一端部が真空バッグフィルムと成形型との間に挿入され、他端部が吸引ポンプに接続される吸引管を設ける。また、真空バッグフィルム内に樹脂を注入するために、一端部が真空バッグフィルム内と成形型との間に挿入され、他端部が樹脂容器に挿入される樹脂注入管を設ける。   In the VaRTM method, in order to make the inside of the vacuum bag film into a vacuum state, a suction tube having one end inserted between the vacuum bag film and the mold and the other end connected to a suction pump is provided. Further, in order to inject the resin into the vacuum bag film, a resin injection tube is provided in which one end is inserted between the vacuum bag film and the mold and the other end is inserted into the resin container.

真空バッグフィルムと成形型との間の縁にはシーラントが設けられており、樹脂注入管及び吸引管の上記一端部の挿入部分も、このシーラントにより隙間を埋めることで、真空バッグフィルム内を密封している（例えば下記特許文献１参照）。   A sealant is provided at the edge between the vacuum bag film and the mold, and the inside of the vacuum bag film is also sealed by filling the gap between the one end of the resin injection tube and the suction tube with the sealant. (For example, see Patent Document 1 below).

特開２０１２−０５１１３０号公報JP 2012-051130 A

真空バッグフィルム内を真空状態とする際、樹脂注入管及び吸引管の上記挿入部分のシーラントが真空バッグフィルム内に引き込まれ、シーラントが極端に変形し、隙間が発生してしまうことがある。   When the inside of the vacuum bag film is evacuated, the sealant at the insertion portion of the resin injection tube and the suction tube is drawn into the vacuum bag film, and the sealant may be extremely deformed to generate a gap.

樹脂注入管の上記挿入部分に隙間が発生すると、気泡が樹脂中に混入するおそれがある。また、吸引管の上記挿入部分に隙間が発生すると、吸引効果が低下することで真空バッグフィルム内の真空度が低下する。これによって、被成形物の品質に悪影響を及ぼしてしまう。   If a gap occurs in the insertion portion of the resin injection tube, there is a possibility that bubbles may be mixed into the resin. In addition, when a gap is generated in the insertion portion of the suction tube, the vacuum effect in the vacuum bag film is lowered due to the reduced suction effect. This adversely affects the quality of the workpiece.

このような問題を解決するため、樹脂注入管、吸引管に代えてチューブポートを設けることも考えられる。しかしながら、チューブポートの場合、同じものを繰り返し使うことになるため、定期的に掃除しなければならず、余計な手間がかかる。また、製造工程の変更等によって樹脂注入管の位置を変更しなければならない場合に、チューブポートは取り外しにくいため位置を変更することが難しく、不便である。   In order to solve such a problem, it is conceivable to provide a tube port in place of the resin injection tube and the suction tube. However, in the case of a tube port, since the same thing is used repeatedly, it has to be cleaned regularly and takes an extra effort. In addition, when the position of the resin injection tube has to be changed due to a change in the manufacturing process or the like, it is difficult to change the position because the tube port is difficult to remove, which is inconvenient.

本発明は、このような技術的状況に鑑みてなされたものであり、真空バッグフィルム内を真空状態とする際に、シーラントにより真空バッグフィルム内の密閉状態を確実に保持することができる、ＶａＲＴＭ工法におけるシール構造を提案することを目的とする。   The present invention has been made in view of such a technical situation, and when making the vacuum bag film in a vacuum state, the VaRTM can reliably hold the sealed state in the vacuum bag film with a sealant. The purpose is to propose a seal structure in the construction method.

上記課題を解決する第１の発明に係るＶａＲＴＭ工法におけるシール構造は、
成形型上において真空バッグフィルムにより被成形物を覆い、該成形型と該真空バッグフィルムとの縁を第１シーラントにより接着し、該成形型と該真空バッグフィルムとの間に挿入した吸引管より、該真空バッグフィルム内の空気を吸引することで、該真空バッグフィルム内を真空状態とし、該成形型と該真空バッグフィルムとの間に挿入した樹脂注入管より、該真空バッグフィルム内に樹脂を注入することにより、該被成形物に対し樹脂含浸を行うＶａＲＴＭ工法におけるシール構造であって、
前記樹脂注入管及び前記吸引管の周面を、前記第１シーラント上に設けた第２シーラントにより密封し、該第２シーラントにおける前記樹脂注入管及び前記吸引管と前記第１シーラントとの間に第１拡大部を形成した
ことを特徴とする。 The seal structure in the VaRTM method according to the first invention for solving the above problems is as follows:
From a suction tube that covers the object to be molded with a vacuum bag film on the mold, bonds the edges of the mold and the vacuum bag film with a first sealant, and is inserted between the mold and the vacuum bag film. The vacuum bag film is evacuated by sucking air in the vacuum bag film, and a resin is injected into the vacuum bag film from a resin injection tube inserted between the mold and the vacuum bag film. Is a seal structure in the VaRTM method for impregnating the molded article with resin,
The peripheral surfaces of the resin injection tube and the suction tube are sealed with a second sealant provided on the first sealant, and the resin injection tube and the suction tube in the second sealant are interposed between the first sealant and the second sealant. The first enlarged portion is formed.

上記課題を解決する第２の発明に係るＶａＲＴＭ工法におけるシール構造は、
上記第１の発明に係るＶａＲＴＭ工法におけるシール構造において、
前記第２シーラントにおける前記樹脂注入管及び前記吸引管と前記真空バッグフィルムとの間に第２拡大部を形成した
ことを特徴とする。 The seal structure in the VaRTM method according to the second invention for solving the above problems is as follows:
In the seal structure in the VaRTM method according to the first invention,
A second enlarged portion is formed between the resin injection tube and the suction tube and the vacuum bag film in the second sealant.

上記課題を解決する第３の発明に係るＶａＲＴＭ工法におけるシール構造は、
上記第２の発明に係るＶａＲＴＭ工法におけるシール構造において、
前記第２シーラントをテープ状とし、前記樹脂注入管の周方向に前記第２シーラントを複数層重ねるように巻き付けることで、前記第１拡大部及び前記第２拡大部を形成した
ことを特徴とする。 The seal structure in the VaRTM method according to the third invention for solving the above problems is as follows:
In the seal structure in the VaRTM method according to the second invention,
The second sealant is formed in a tape shape, and the first enlarged portion and the second enlarged portion are formed by winding the second sealant so as to overlap a plurality of layers in the circumferential direction of the resin injection tube. .

上記課題を解決する第４の発明に係るＶａＲＴＭ工法におけるシール構造は、
上記第１の発明に係るＶａＲＴＭ工法におけるシール構造において、
前記第２シーラントをテープ状とし、前記樹脂注入管を前記第１シーラントから引き離すように、前記第２シーラントを延伸させて、前記第１拡大部を形成した
ことを特徴とする。 The seal structure in the VaRTM method according to the fourth invention for solving the above problems is as follows:
In the seal structure in the VaRTM method according to the first invention,
The second sealant is formed in a tape shape, and the second sealant is stretched so as to separate the resin injection tube from the first sealant, thereby forming the first enlarged portion.

本発明に係るＶａＲＴＭ工法におけるシール構造によれば、真空バッグフィルム内を真空状態とする際に、シーラントにより真空バッグフィルム内の密閉状態を確実に保持することができる。   According to the seal structure in the VaRTM method according to the present invention, the sealed state in the vacuum bag film can be reliably held by the sealant when the vacuum bag film is in a vacuum state.

本発明に係るＶａＲＴＭ工法におけるシール構造を説明する断面図である。It is sectional drawing explaining the seal structure in the VaRTM construction method concerning this invention. 本発明の実施例１に係るＶａＲＴＭ工法におけるシール構造を説明する断面図である。It is sectional drawing explaining the seal structure in the VaRTM construction method concerning Example 1 of this invention. 図２の側面に沿う断面図である。It is sectional drawing which follows the side surface of FIG. 本発明の実施例２に係るＶａＲＴＭ工法におけるシール構造を説明する断面図Sectional drawing explaining the seal structure in the VaRTM construction method which concerns on Example 2 of this invention 図４の側面に沿う断面図である。It is sectional drawing which follows the side surface of FIG. ＶａＲＴＭ工法を行う装置の平面図である。It is a top view of the apparatus which performs VaRTM construction method. ＶａＲＴＭ工法を行う装置の断面図である。It is sectional drawing of the apparatus which performs a VaRTM construction method. 従来図のＡ‐Ａ矢視図である。It is an AA arrow line view of a conventional figure.

以下、本発明に係るＶａＲＴＭ工法におけるシール構造について、図１，６〜８を用いて説明する。図６はＶａＲＴＭ工法を行う装置の上面図（真空バッグフィルムは省略）、図７はＶａＲＴＭ工法を行う装置の断面図、図８は図６，７のＡ‐Ａ矢視図である。   Hereinafter, the seal structure in the VaRTM method according to the present invention will be described with reference to FIGS. 6 is a top view of the apparatus for performing the VaRTM method (vacuum bag film is omitted), FIG. 7 is a cross-sectional view of the apparatus for performing the VaRTM method, and FIG. 8 is a view taken along arrows AA in FIGS.

図６，７に示すように、ＶａＲＴＭ工法を行う装置は、成形型１１と、成形型１１上において被成形物１０を覆う真空バッグフィルム１２と、真空バッグフィルム１２内の空気を吸引するための吸引管１４と、真空バッグフィルム１２内に樹脂を注入するための樹脂注入管１３とを備え、真空バッグフィルム１２内を真空状態として、樹脂を被成形物１０に含浸させる。   As shown in FIGS. 6 and 7, an apparatus that performs the VaRTM method includes a mold 11, a vacuum bag film 12 that covers the molding object 10 on the mold 11, and air for sucking air in the vacuum bag film 12. A suction tube 14 and a resin injection tube 13 for injecting a resin into the vacuum bag film 12 are provided, and the vacuum bag film 12 is evacuated to impregnate the molding object 10 with the resin.

成形型１１と真空バッグフィルム１２との間の縁にシーラント（第１シーラント）１５を設けることで、成形型１１と真空バッグフィルム１２との縁を接着し、これによって被成形物１０を密封状態としている。   By providing a sealant (first sealant) 15 at the edge between the mold 11 and the vacuum bag film 12, the edge between the mold 11 and the vacuum bag film 12 is adhered, thereby sealing the object 10 to be molded. It is said.

シーラント１５上の任意の位置には管挿入部用シーラント１６が接着されて設けられている。図６〜８に示すように、樹脂注入管１３及び吸引管１４の一端部は、それぞれシーラント１５と管挿入部用シーラント１６とに挟まれるようにして、成形型１１と真空バッグフィルム１２との間に挿入されている（図６，７では、樹脂注入管１３及び吸引管１４の他端部を省略している。実際には、樹脂注入管１３の他端部は樹脂容器に挿入され、吸引管１４の他端部は真空ポンプに挿入される）。なお、図８では樹脂注入管１３側のみを示しているが、吸引管１４側も同様である。   A pipe insertion portion sealant 16 is bonded and provided at an arbitrary position on the sealant 15. As shown in FIGS. 6 to 8, one end portions of the resin injection tube 13 and the suction tube 14 are sandwiched between the sealant 15 and the tube insertion portion sealant 16, respectively, so that the mold 11 and the vacuum bag film 12 are connected. (In FIGS. 6 and 7, the other end portions of the resin injection tube 13 and the suction tube 14 are omitted. Actually, the other end portion of the resin injection tube 13 is inserted into the resin container, The other end of the suction tube 14 is inserted into a vacuum pump). Although FIG. 8 shows only the resin injection tube 13 side, the same applies to the suction tube 14 side.

このような管挿入部用シーラント１６では、真空バッグフィルム１２内を真空状態とする際、図７の破線矢印で示す如く、管挿入部用シーラント１６及びその近傍のシーラント１５が真空バッグフィルム１２内に引き込まれるようにしてずれてしまい、シーラントが極端に変形し、隙間が発生してしまう可能性がある。   In such a tube insertion portion sealant 16, when the vacuum bag film 12 is evacuated, the tube insertion portion sealant 16 and the sealant 15 in the vicinity of the tube insertion portion sealant 16 are contained in the vacuum bag film 12. The sealant may be displaced by being drawn into the sealant, the sealant may be extremely deformed, and a gap may be generated.

そこで、本発明に係るＶａＲＴＭ工法におけるシール構造では、管挿入部用シーラントの形状を変更することで、真空バッグフィルム内を真空状態とする際の隙間の発生を防ぐようにしている。   Therefore, in the seal structure in the VaRTM method according to the present invention, the shape of the sealant for the tube insertion portion is changed to prevent generation of a gap when the vacuum bag film is evacuated.

本発明に係るＶａＲＴＭ工法におけるシール構造を説明する断面図（図６，７のＡ‐Ａ矢視断面に対応）である図１に示すように、本発明に係るＶａＲＴＭ工法におけるシール構造では、樹脂注入管１３及び吸引管１４の周面を、第１シーラント１５上に設けた管挿入部用シーラント（第２シーラント）１によって密封する。   As shown in FIG. 1 which is a cross-sectional view (corresponding to the cross section taken along the line AA in FIGS. 6 and 7) for explaining the seal structure in the VaRTM method according to the present invention, the seal structure in the VaRTM method according to the present invention is a resin. The peripheral surfaces of the injection tube 13 and the suction tube 14 are sealed with a tube insertion portion sealant (second sealant) 1 provided on the first sealant 15.

管挿入部用シーラント１における、樹脂注入管１３とシーラント１５との間に、第１拡大部１ａを形成する。すなわち、本発明に係るＶａＲＴＭ工法におけるシール構造では、成形型１１から樹脂注入管１３までのシーラント厚（管挿入部用シーラント１及びシーラント１５の総厚）を大きくする。   A first enlarged portion 1 a is formed between the resin injection tube 13 and the sealant 15 in the tube insertion portion sealant 1. That is, in the seal structure in the VaRTM method according to the present invention, the sealant thickness from the mold 11 to the resin injection tube 13 (the total thickness of the tube insertion portion sealant 1 and the sealant 15) is increased.

これにより、管挿入部用シーラント１及びシーラント１５が、真空バッグフィルム１２内を真空状態とする際の負圧により引っ張られると、第１拡大部１ａすなわちシーラント厚の大きい部分周辺が撓む。したがって、管挿入部用シーラント１及びその近傍のシーラント１５の極端な変形を抑制し、隙間の発生を防止することができる。   Thereby, when the pipe-insertion-portion sealant 1 and the sealant 15 are pulled by a negative pressure when the vacuum bag film 12 is evacuated, the periphery of the first enlarged portion 1a, that is, the portion where the sealant is thick is bent. Therefore, it is possible to suppress the extreme deformation of the pipe insertion portion sealant 1 and the sealant 15 in the vicinity thereof and to prevent the generation of a gap.

さらに、本発明に係るＶａＲＴＭ工法におけるシール構造では、図１に示すように、管挿入部用シーラント１における、樹脂注入管１３と真空バッグフィルム１２との間に、管挿入部用シーラント１の第２拡大部１ｂを形成するものとしてもよい。すなわち、本発明に係るＶａＲＴＭ工法におけるシール構造では、樹脂注入管１３から真空バッグフィルム１２までのシーラント厚を大きくするようにしてもよい。   Further, in the seal structure in the VaRTM method according to the present invention, as shown in FIG. 1, the tube insertion portion sealant 1 is interposed between the resin injection tube 13 and the vacuum bag film 12 in the tube insertion portion sealant 1. It is good also as what forms 2 expansion part 1b. That is, in the seal structure in the VaRTM method according to the present invention, the sealant thickness from the resin injection tube 13 to the vacuum bag film 12 may be increased.

これにより、管挿入部用シーラント１及びシーラント１５が、真空バッグフィルム１２内を真空状態とする際の負圧により引っ張られると、第１拡大部１ａ周辺と共に第２拡大部１ｂも撓み、管挿入部用シーラント１及びその近傍のシーラント１５の極端な変形をより抑制し、隙間の発生をより防止することができる。   Thereby, when the sealant 1 for pipe insertion part and the sealant 15 are pulled by the negative pressure when the vacuum bag film 12 is evacuated, the second enlarged part 1b is bent together with the periphery of the first enlarged part 1a, and the pipe is inserted. The extreme deformation of the sealant for part 1 and the sealant 15 in the vicinity thereof can be further suppressed, and the generation of gaps can be further prevented.

なお、図１では樹脂注入管１３側の管挿入部用シーラント１に着目して説明したが、吸引管１４側にも同様の管挿入部用シーラントを設ける。   In FIG. 1, the description has been given focusing on the pipe insertion portion sealant 1 on the resin injection tube 13 side, but a similar pipe insertion portion sealant is also provided on the suction tube 14 side.

以上が本発明に係るＶａＲＴＭ工法におけるシール構造についての説明である。以下、本発明に係るＶａＲＴＭ工法におけるシール構造について、実施例により具体的に説明する。   The above is the description of the seal structure in the VaRTM method according to the present invention. Hereinafter, the seal structure in the VaRTM method according to the present invention will be specifically described with reference to examples.

［実施例１］
本発明の実施例１に係るＶａＲＴＭ工法におけるシール構造について、図２，３を用いて説明する。図２は本発明の実施例１に係るＶａＲＴＭ工法におけるシール構造を説明する断面図（図６，７のＡ‐Ａ矢視断面に対応）、図３は図２を横から見た断面図（図６のＢ‐Ｂ矢視断面に対応）である。 [Example 1]
A seal structure in the VaRTM method according to Example 1 of the present invention will be described with reference to FIGS. 2 is a cross-sectional view for explaining the seal structure in the VaRTM method according to the first embodiment of the present invention (corresponding to the cross section taken along the line AA in FIGS. 6 and 7), and FIG. 3 is a cross-sectional view of FIG. (Corresponding to a cross section taken along line BB in FIG. 6).

本発明の実施例１に係るＶａＲＴＭ工法におけるシール構造では、図２，３に示すように、管挿入部用シーラント２をテープ状のものとし、樹脂注入管１３の上記一端部の周方向に管挿入部用シーラント２を複数層重ねるように巻き付けることで、第１拡大部２ａ（図１の第１拡大部１ａに対応）及び第２拡大部２ｂ（図１の第２拡大部１ｂに対応）を形成する。   In the seal structure in the VaRTM method according to the first embodiment of the present invention, as shown in FIGS. 2 and 3, the pipe insertion portion sealant 2 is formed in a tape shape, and the pipe is formed in the circumferential direction of the one end of the resin injection pipe 13. By winding the sealant 2 for the insertion portion so as to overlap a plurality of layers, a first enlarged portion 2a (corresponding to the first enlarged portion 1a in FIG. 1) and a second enlarged portion 2b (corresponding to the second enlarged portion 1b in FIG. 1). Form.

第１拡大部２ａを形成することにより、成形型１１から樹脂注入管１３までのシーラント厚が、従来に比べて大きくなる。また、第２拡大部２ｂを形成することにより、真空バッグフィルム１２から樹脂注入管１３までのシーラント厚の幅が、従来に比べて大きくなる。   By forming the 1st expansion part 2a, the sealant thickness from the shaping | molding die 11 to the resin injection pipe 13 becomes large compared with the past. Further, by forming the second enlarged portion 2b, the width of the sealant thickness from the vacuum bag film 12 to the resin injection tube 13 becomes larger than the conventional one.

これにより、管挿入部用シーラント２及びシーラント１５が、真空バッグフィルム１２内を真空状態とする際の負圧により引っ張られると、図３中に二点鎖線で示すように、第１拡大部２ａ及び第２拡大部２ｂが撓む。したがって、管挿入部用シーラント２及びその近傍のシーラント１５の極端な変形を抑制し、隙間の発生を防止することができる。   As a result, when the pipe insert sealant 2 and the sealant 15 are pulled by the negative pressure when the vacuum bag film 12 is evacuated, as shown by a two-dot chain line in FIG. And the 2nd expansion part 2b bends. Therefore, the extreme deformation of the sealant 2 for pipe insertion portion and the sealant 15 in the vicinity thereof can be suppressed, and the generation of a gap can be prevented.

なお、上述では樹脂注入管１３側の管挿入部用シーラント２に着目して説明したが、吸引管１４側にも同様の管挿入部用シーラントを設ける。   In the above description, the tube insertion portion sealant 2 on the resin injection tube 13 side has been described. However, a similar tube insertion portion sealant is also provided on the suction tube 14 side.

［実施例２］
本発明の実施例２に係るＶａＲＴＭ工法におけるシール構造について、図４，５を用いて説明する。図４は本発明の実施例２に係るＶａＲＴＭ工法におけるシール構造を説明する断面図（図６，７のＡ‐Ａ矢視断面に対応）、図５は図４を横から見た断面図（図６のＢ‐Ｂ矢視断面に対応）である。 [Example 2]
A seal structure in the VaRTM method according to Example 2 of the present invention will be described with reference to FIGS. 4 is a cross-sectional view (corresponding to the cross section taken along the line AA in FIGS. 6 and 7) for explaining the seal structure in the VaRTM method according to Embodiment 2 of the present invention, and FIG. 5 is a cross-sectional view of FIG. (Corresponding to a cross section taken along line BB in FIG. 6).

本発明の実施例２に係るＶａＲＴＭ工法におけるシール構造では、図４，５に示すように、管挿入部用シーラント３をテープ状のものとし、樹脂注入管１３を成形型１１から（上方すなわち真空バッグフィルム１２側へ）引き離すように、管挿入部用シーラント３を延伸させることで、第１拡大部３ａ（図１の第１拡大部１ａに対応）を形成する。   In the seal structure in the VaRTM method according to the second embodiment of the present invention, as shown in FIGS. 4 and 5, the tube insertion portion sealant 3 is formed in a tape shape, and the resin injection tube 13 is removed from the molding die 11 (upward or vacuum). The first insertion portion 3a (corresponding to the first enlargement portion 1a in FIG. 1) is formed by extending the pipe insertion portion sealant 3 so as to be separated from the bag film 12 side.

第１拡大部３ａを形成することにより、成形型１１及び真空バッグフィルム１２から樹脂注入管１３までのシーラント厚が、従来に比べて大きくなる。   By forming the 1st expansion part 3a, the sealant thickness from the shaping | molding die 11 and the vacuum bag film 12 to the resin injection pipe 13 becomes large compared with the past.

これにより、管挿入部用シーラント３及びシーラント１５が、真空バッグフィルム１２内を真空状態とする際の負圧により引っ張られると、図５中に二点鎖線で示すように、第１拡大部３ａが撓む。したがって、管挿入部用シーラント３及びその近傍のシーラント１５の極端な変形を抑制し、隙間の発生を防止することができる。   Accordingly, when the sealant 3 for pipe insertion portion and the sealant 15 are pulled by a negative pressure when the vacuum bag film 12 is brought into a vacuum state, as shown by a two-dot chain line in FIG. Will bend. Accordingly, it is possible to suppress the extreme deformation of the pipe insertion portion sealant 3 and the sealant 15 in the vicinity thereof and to prevent the generation of a gap.

また、被成形物１０が凸状の成形型１１の上に配置され、被成形物１０の位置が第１シーラント１５よりも比較的高い場合に、本実施例のように、樹脂注入管１３あるいは樹脂排出管(図示を省略)も高くすることができ、流路抵抗を上げず、効率よく、被成形物１０に樹脂を注入することが出来る。   Further, when the molding object 10 is disposed on the convex mold 11 and the position of the molding object 10 is relatively higher than the first sealant 15, the resin injection tube 13 or the like as in the present embodiment. The resin discharge pipe (not shown) can also be increased, and the resin can be efficiently injected into the molding 10 without increasing the flow resistance.

なお、上述では樹脂注入管１３側の管挿入部用シーラント３に着目して説明したが、吸引管１４側にも同様の管挿入部用シーラントを設ける。   In the above description, the tube insertion portion sealant 3 on the resin injection tube 13 side has been described. However, a similar tube insertion portion sealant is also provided on the suction tube 14 side.

本発明は、ＶａＲＴＭ工法におけるシール構造として好適である。   The present invention is suitable as a seal structure in the VaRTM method.

１，２，３ 管挿入部用シーラント（第２シーラント）
１ａ，２ａ，３ａ 第１拡大部
１ｂ，２ｂ 第２拡大部
１０ 被成形物
１１ 成形型
１２ 真空バッグフィルム
１３ 樹脂注入管
１４ 吸引管
１５ シーラント（第１シーラント）
１６ （従来の）管挿入部用シーラント 1,2,3 Pipe insert sealant (second sealant)
1a, 2a, 3a 1st enlarged part 1b, 2b 2nd enlarged part 10 Molded object 11 Mold 12 Vacuum bag film 13 Resin injection pipe 14 Suction pipe 15 Sealant (first sealant)
16 (Conventional) Pipe insert sealant

Claims (4)

成形型上において真空バッグフィルムにより被成形物を覆い、該成形型と該真空バッグフィルムとの縁を第１シーラントにより接着し、該成形型と該真空バッグフィルムとの間に挿入した吸引管より、該真空バッグフィルム内の空気を吸引することで、該真空バッグフィルム内を真空状態とし、該成形型と該真空バッグフィルムとの間に挿入した樹脂注入管より、該真空バッグフィルム内に樹脂を注入することにより、該被成形物に対し樹脂含浸を行うＶａＲＴＭ工法におけるシール構造であって、
前記樹脂注入管及び前記吸引管の周面を、前記第１シーラント上に設けた第２シーラントにより密封し、該第２シーラントにおける前記樹脂注入管及び前記吸引管と前記第１シーラントとの間に第１拡大部を形成した
ことを特徴とする、ＶａＲＴＭ工法におけるシール構造。 From a suction tube that covers the object to be molded with a vacuum bag film on the mold, bonds the edges of the mold and the vacuum bag film with a first sealant, and is inserted between the mold and the vacuum bag film. The vacuum bag film is evacuated by sucking air in the vacuum bag film, and a resin is injected into the vacuum bag film from a resin injection tube inserted between the mold and the vacuum bag film. Is a seal structure in the VaRTM method for impregnating the molded article with resin,
The peripheral surfaces of the resin injection tube and the suction tube are sealed with a second sealant provided on the first sealant, and the resin injection tube and the suction tube in the second sealant are interposed between the first sealant and the second sealant. A seal structure in the VaRTM method, characterized in that the first enlarged portion is formed. 前記第２シーラントにおける前記樹脂注入管及び前記吸引管と前記真空バッグフィルムとの間に第２拡大部を形成した
ことを特徴とする、請求項１に記載のＶａＲＴＭ工法におけるシール構造。 The seal structure in the VaRTM method according to claim 1, wherein a second enlarged portion is formed between the resin injection tube and the suction tube and the vacuum bag film in the second sealant. 前記第２シーラントをテープ状とし、前記樹脂注入管の周方向に前記第２シーラントを複数層重ねるように巻き付けることで、前記第１拡大部及び前記第２拡大部を形成した
ことを特徴とする、請求項２に記載のＶａＲＴＭ工法におけるシール構造。 The second sealant is formed in a tape shape, and the first enlarged portion and the second enlarged portion are formed by winding the second sealant so as to overlap a plurality of layers in the circumferential direction of the resin injection tube. The seal structure in the VaRTM method according to claim 2. 前記第２シーラントをテープ状とし、前記樹脂注入管を前記第１シーラントから引き離すように、前記第２シーラントを延伸させて、前記第１拡大部を形成した
ことを特徴とする、請求項１に記載のＶａＲＴＭ工法におけるシール構造。 2. The first enlarged portion is formed by extending the second sealant so that the second sealant has a tape shape and the resin injection tube is separated from the first sealant. 3. Seal structure in the described VaRTM method.
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