JP2015080940A - Molding method and molding tool of fiber-reinforced plastic - Google Patents

Molding method and molding tool of fiber-reinforced plastic Download PDF

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JP2015080940A
JP2015080940A JP2013221375A JP2013221375A JP2015080940A JP 2015080940 A JP2015080940 A JP 2015080940A JP 2013221375 A JP2013221375 A JP 2013221375A JP 2013221375 A JP2013221375 A JP 2013221375A JP 2015080940 A JP2015080940 A JP 2015080940A
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mold
elastic film
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resin
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JP6152037B2 (en
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睦裕 中澤
Mutsuhiro Nakazawa
睦裕 中澤
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Kawasaki Heavy Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a molding method capable of reducing resistance due to a fiber in supplying a resin to a molding tool and implementing the molding with simple equipment.SOLUTION: There is provided a molding method which comprises: a step of covering a temporary mold 20 with an elastic film 30 and discharging air between the temporary mold 20 and the elastic film 30 to deform the elastic film 30 to a shape of the temporary mold 20; a step of disposing a fiber 101 along the deformed elastic film 30; a step of overlapping a molding mold 10 and the temporary mold 20; a step of supplying a resin 102 to a molding part 33 partitioned by the elastic film 30 and the molding mold 10; and a step of supplying high-pressure air 103 between the elastic film 30 and the temporary mold 20 to separate the elastic film 30 from a temporary surface 23 of the temporary mold 20 and curing the resin 102 in the molding part 33 under this condition.

Description

本発明は、繊維強化プラスチックの成形方法に関する。また、繊維強化プラスチックを成形するため成形具に関する。   The present invention relates to a method for molding a fiber reinforced plastic. The present invention also relates to a molding tool for molding fiber reinforced plastic.

繊維強化プラスチック（Fiber Reinforced Plastics；以下、「ＦＲＰ」と称す）の成形方法の１つにＲＴＭ（Resin Transfer Molding）成形法がある。ＲＴＭ成形法は、繊維が配置された成形型の内部に所定の圧力で樹脂を供給し、樹脂の圧力を維持したまま樹脂を硬化させる方法である。ＲＴＭ成形法によれば、繊維に樹脂を含浸させつつ、この繊維と樹脂からなるＦＲＰの成形を行うことができる。   One of the molding methods of fiber reinforced plastics (hereinafter referred to as “FRP”) is an RTM (Resin Transfer Molding) molding method. The RTM molding method is a method in which a resin is supplied at a predetermined pressure into a molding die in which fibers are arranged, and the resin is cured while maintaining the pressure of the resin. According to the RTM molding method, an FRP made of the fiber and the resin can be molded while impregnating the fiber with the resin.

ＲＴＭ成形法では、樹脂が硬化する前に樹脂を成形型（繊維）の隅々にまで供給する必要がある。ただし、樹脂を成形型の内部に供給する際、高い繊維密度（成形が行われる空間の容積に対する繊維の量の割合）で配置された繊維が大きな抵抗となる。ここで、特許文献１には、成形型の内部に樹脂を供給する際に上型と下型の締め付けを緩めることで内部の容積を増加させる一方、樹脂を供給した後には上型と下型の締め付けを元に戻すという方法が開示されている。特許文献１に記載の方法によれば、成形型の内部に樹脂を供給する際、成形型の容積が増えるため、繊維密度が小さくなって繊維による抵抗が小さくなる。   In the RTM molding method, it is necessary to supply the resin to every corner of the mold (fiber) before the resin is cured. However, when the resin is supplied to the inside of the mold, the fibers arranged at a high fiber density (ratio of the amount of fibers to the volume of the space where the molding is performed) have a large resistance. Here, in Patent Document 1, when the resin is supplied to the inside of the molding die, the inner volume is increased by loosening the tightening of the upper die and the lower die. On the other hand, after the resin is supplied, the upper die and the lower die are increased. A method of returning the tightening to the original is disclosed. According to the method described in Patent Document 1, when the resin is supplied into the mold, the volume of the mold increases, so the fiber density decreases and the resistance due to the fibers decreases.

特開２００７−３０１７２３号公報JP 2007-301723 A

ところで、特許文献１に記載の方法を実施するためには、樹脂の圧力に対抗して上型と下型を締め付けることができる大きな駆動力と高い動作精度（締め付けによる隙間の変動は０.１〜５ｍｍ）を備えた装置が必要である。このような装置としては、例えば高精度の油圧プレスを備えた装置が考えられるが、高精度の油圧プレスを備えた装置は構成が複雑で、大型化も避けられない。   By the way, in order to carry out the method described in Patent Document 1, a large driving force and high operation accuracy capable of tightening the upper mold and the lower mold against the pressure of the resin (the fluctuation of the gap due to the tightening is 0.1). A device with ˜5 mm) is required. As such an apparatus, for example, an apparatus provided with a high-precision hydraulic press is conceivable. However, an apparatus provided with a high-precision hydraulic press has a complicated configuration, and an increase in size is inevitable.

本発明は、このような事情に鑑みてなされたものであり、樹脂を成形具に供給する際に繊維による抵抗を小さくすることができ、かつ、これを簡易な設備で実施することができる成形方法を提供することを目的としている。   This invention is made | formed in view of such a situation, When supplying resin to a shaping | molding tool, the resistance by a fiber can be made small, and this can be implemented with simple equipment. It aims to provide a method.

本発明のある形態に係る繊維強化プラスチックの成形方法は、成形品の一方の面の反転形状を有する凸状の成形型と、前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凹状の暫定型と、前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、前記暫定型を前記弾性フィルムで覆い、前記暫定型と前記弾性フィルムの間の空気を排出して、前記弾性フィルムを前記暫定型の形状に変形させる工程と、変形した前記弾性フィルムに沿って繊維を配置する工程と、前記繊維を配置した後、前記成形型と前記暫定型を重ね合わせる工程と、前記弾性フィルムと前記成形型とによって画された成形部に樹脂を供給する工程と、前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む。   A method for molding a fiber reinforced plastic according to an embodiment of the present invention includes a convex mold having an inverted shape on one side of a molded product, and the mold is overlapped with the mold and more than the molded product. Using a molding tool comprising a concave provisional mold having a provisional surface facing the expansion space, forming a large expansion space, and an elastic film disposed between the mold and the provisional mold, Covering the temporary mold with the elastic film, discharging air between the temporary mold and the elastic film, and deforming the elastic film into the shape of the temporary mold; and forming fibers along the deformed elastic film A step of placing the fiber, a step of superimposing the mold and the provisional die, a step of supplying a resin to a molded part defined by the elastic film and the mold, and the molded part Provide resin to And then supplying high pressure air between the elastic film and the provisional mold, separating the elastic film from the provisional surface of the provisional mold, and curing the resin in the molded portion in that state. .

かかる構成では、弾性フィルムと暫定型の間に高圧空気を供給することで、成形部の大きさが変化する。そのため、成形部の容積が大きく繊維による抵抗が小さい状態で樹脂を成形型に供給する一方、樹脂を硬化させる際には成形品の大きさに合わせて成形部の容積を小さくすることができる。しかも、高圧空気の圧力は、樹脂の圧力よりも大きければよいため、精密な制御を行うための設備は不要である。さらに、上記の構成によれば、成形品の他方の面を弾性フィルムで成形することができる。そのため、成形品の他方の面を成形するための成形型は不要である。   In such a configuration, the size of the molded portion changes by supplying high-pressure air between the elastic film and the temporary mold. Therefore, the resin is supplied to the mold in a state where the volume of the molded part is large and the resistance by the fibers is small, while the volume of the molded part can be reduced according to the size of the molded product when the resin is cured. And since the pressure of high pressure air should just be larger than the pressure of resin, the installation for performing precise control is unnecessary. Furthermore, according to said structure, the other surface of a molded product can be shape | molded with an elastic film. Therefore, a molding die for molding the other surface of the molded product is not necessary.

また、本発明の他の形態に係る繊維強化プラスチックの成形方法は、成形品の一方の面の反転形状を有する凹状の成形型と、前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凸状の暫定型と、前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、前記暫定型を前記弾性フィルムで覆い、前記暫定型と前記弾性フィルムの間の空気を排出して、前記弾性フィルムを前記暫定型の形状に変形させる工程と、前記成形型に沿って繊維を配置する工程と、前記繊維を配置した後、前記成形型と前記暫定型を重ね合わせる工程と、前記弾性フィルムと前記成形型とによって画された成形部に樹脂を供給する工程と、前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む。かかる構成の場合も前述した成形方法と同様の作用効果を得ることができる。   The method for molding a fiber reinforced plastic according to another embodiment of the present invention includes a concave mold having an inverted shape of one surface of a molded article, and the molded article between the mold and the mold. A molding tool including a convex provisional mold having a provisional surface facing the expansion space, and an elastic film disposed between the molding mold and the provisional mold. A step of covering the temporary mold with the elastic film, discharging air between the temporary mold and the elastic film, and deforming the elastic film into the shape of the temporary mold; and a fiber along the mold Disposing the fiber, then placing the mold and the provisional mold on top of each other, supplying a resin to a molding portion defined by the elastic film and the mold, and forming the molding. After supplying resin to the part By supplying high pressure air between the provisional type and the elastic film, the elastic film is separated from the interim surface of the tentative type, comprising a step of curing the resin in the molding portion in this state, the. In the case of such a configuration, it is possible to obtain the same effects as those of the molding method described above.

また、本発明のさらに他の形態に係る繊維強化プラスチックの成形方法は、成形品の一方の面の反転形状を有する凸状の成形型と、前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凹状の暫定型と、前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、前記成形型に沿って繊維を配置する工程と、前記成形型に沿って配置された繊維を前記弾性フィルムで覆い、当該弾性フィルムを引き伸ばしつつ前記成形型の形状に沿って変形させながら前記成形型と前記暫定型を重ね合わせる工程と、前記弾性フィルムと前記成形型とによって画される成形部に樹脂を供給し、前記弾性フィルムを前記暫定型の形状に変形させる工程と、前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む。かかる構成の場合も前述した成形方法と同様の作用効果を得ることができる。   The method for molding a fiber reinforced plastic according to still another embodiment of the present invention includes a convex mold having an inverted shape of one surface of a molded product, and the mold overlapped with the mold and the mold. A molding tool comprising: a concave provisional mold that forms a larger expansion space than a molded product and has a provisional surface facing the expansion space; and an elastic film disposed between the molding mold and the provisional mold. Using the step of arranging fibers along the mold, covering the fibers arranged along the mold with the elastic film, and stretching the elastic film while deforming along the shape of the mold A step of superimposing the mold and the temporary mold, a step of supplying a resin to a molding portion defined by the elastic film and the mold, and deforming the elastic film into the shape of the temporary mold; and the molding Part Supplying a high-pressure air between the elastic film and the provisional mold after supplying the resin, separating the elastic film from the provisional surface of the provisional mold, and curing the resin in the molding portion in that state; ,including. In the case of such a configuration, it is possible to obtain the same effects as those of the molding method described above.

また、本発明のさらに他の形態に係る繊維強化プラスチックの成形方法は、成形品の一方の面の反転形状を有する凹状の成形型と、前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凸状の暫定型と、前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、前記成形型に沿って繊維を配置する工程と、当該弾性フィルムを引き伸ばしつつ前記暫定型の形状に沿って変形させながら前記成形型と前記暫定型を重ね合わせる工程と、前記弾性フィルムと前記成形型とによって画される成形部に樹脂を供給する工程と、前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む。かかる構成の場合も前述した成形方法と同様の作用効果を得ることができる。   The method for molding a fiber reinforced plastic according to still another embodiment of the present invention includes a concave mold having an inverted shape of one surface of a molded product, and the molding between the mold and the mold. A molding tool comprising: a convex provisional mold having a provisional surface facing the expansion space; and an elastic film disposed between the molding mold and the provisional mold. Using the step of arranging fibers along the mold, the step of superimposing the mold and the temporary mold while stretching the elastic film while deforming along the shape of the temporary mold, and the elastic film Supplying a resin to a molding part defined by the molding die, and supplying a resin to the molding part, and then supplying high-pressure air between the elastic film and the temporary mold, Provisional It is separated from Teimen, and a step of curing the resin in the molding portion in this state, the. In the case of such a configuration, it is possible to obtain the same effects as those of the molding method described above.

また本発明のある形態に係る繊維強化プラスチックの成形具は、成形品の一方の面の反転形状を有する成形型と、前記成形型に重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する暫定型と、前記成形型と前記暫定型の間に配置される弾性フィルムと、を備え、前記弾性フィルムは、当該弾性フィルムが前記暫定型の暫定面に沿って変形し、かつ、当該弾性フィルムと前記成形型とによって画される成形部に繊維及び樹脂が供給された状態で、前記弾性フィルムと前記暫定型との間に高圧空気が供給されると、当該弾性フィルムが前記暫定型の暫定面から離間するように構成されている。かかる成形具を用いれば、前述した各成形方法を実施することができる。   Further, a fiber reinforced plastic molding tool according to an embodiment of the present invention is a larger enlargement than the molded product between a molding die having an inverted shape of one surface of the molded product and the molding die. A provisional mold having a provisional surface that forms a space and faces the enlarged space; and an elastic film disposed between the molding mold and the provisional mold, wherein the elastic film is the provisional elastic film. High pressure air between the elastic film and the provisional mold in a state in which fibers and resin are supplied to a molding portion that is deformed along the provisional surface of the mold and is defined by the elastic film and the mold. Is supplied, the elastic film is configured to be separated from the provisional surface of the provisional mold. If such a forming tool is used, the above-described forming methods can be carried out.

以上のとおり、上記の成形方法によれば、樹脂を成形具に供給する際に繊維による抵抗を小さくすることができ、かつ、これを簡易な設備で実施することができる。   As described above, according to the above molding method, the resistance due to the fibers can be reduced when the resin is supplied to the molding tool, and this can be performed with simple equipment.

図１は、第１実施形態に係る成形具の分解断面図である。FIG. 1 is an exploded cross-sectional view of a forming tool according to the first embodiment. 図２は、第１実施形態に係る成形方法を示した図である。FIG. 2 is a view showing a molding method according to the first embodiment. 図３は、第１実施形態に係る成形方法を示した図である。FIG. 3 is a view showing a molding method according to the first embodiment. 図４は、第１実施形態に係る成形方法を示した図である。FIG. 4 is a view showing a molding method according to the first embodiment. 図５は、第１実施形態に係る成形方法を示した図である。FIG. 5 is a view showing a molding method according to the first embodiment. 図６は、第１実施形態に係る成形方法を示した図である。FIG. 6 is a view showing a molding method according to the first embodiment. 図７は、第１実施形態に係る成形方法を示した図である。FIG. 7 is a view showing a molding method according to the first embodiment. 図８は、第１実施形態に係る成形方法を示した図である。FIG. 8 is a view showing a molding method according to the first embodiment. 図９は、第２実施形態に係る成形具の分解断面図である。FIG. 9 is an exploded cross-sectional view of the forming tool according to the second embodiment. 図１０は、第２実施形態に係る成形方法を示した図である。FIG. 10 is a view showing a molding method according to the second embodiment. 図１１は、第２実施形態に係る成形方法を示した図である。FIG. 11 is a view showing a molding method according to the second embodiment. 図１２は、第３実施形態に係る成形具の分解断面図である。FIG. 12 is an exploded cross-sectional view of the forming tool according to the third embodiment. 図１３は、第３実施形態に係る成形方法を示した図である。FIG. 13 is a view showing a molding method according to the third embodiment. 図１４は、第３実施形態に係る成形方法を示した図である。FIG. 14 is a view showing a molding method according to the third embodiment. 図１５は、第４実施形態に係る成形具の分解断面図である。FIG. 15 is an exploded cross-sectional view of a forming tool according to the fourth embodiment. 図１６は、第４実施形態に係る成形方法を示した図である。FIG. 16 is a view showing a molding method according to the fourth embodiment. 図１７は、第４実施形態に係る成形方法を示した図である。FIG. 17 is a view showing a molding method according to the fourth embodiment.

以下、本発明の第１実施形態乃至第４実施形態について図を参照しながら説明する。以下では、全ての図面を通じて同一又は相当する要素には同じ符号を付して、重複する説明は省略する。   Hereinafter, a first embodiment to a fourth embodiment of the present invention will be described with reference to the drawings. Below, the same code | symbol is attached | subjected to the element which is the same or it corresponds through all the drawings, and the overlapping description is abbreviate | omitted.

（第１実施形態）
＜成形具の構成＞
まず、第１実施形態に係る成形具１００の構成について説明する。図１は、成形具１００の分解断面図である。図１に示すように、成形具１００は、成形型１０と、暫定型２０と、弾性フィルム３０と、固定部材４０と、隙間調整部材５０と、を備えている。以下、これらの構成要素について順に説明する。 (First embodiment)
<Configuration of molding tool>
First, the configuration of the forming tool 100 according to the first embodiment will be described. FIG. 1 is an exploded cross-sectional view of the forming tool 100. As shown in FIG. 1, the molding tool 100 includes a molding die 10, a temporary die 20, an elastic film 30, a fixing member 40, and a gap adjusting member 50. Hereinafter, these components will be described in order.

成形型１０は、成形品１０４（図８参照）の一方の面の反転形状を有する部材である。本実施形態の成形型１０は凸状であり、成形具１００の上方部分にあたる。成形型１０には、成形具１００の内部と成形具１００の外部をつなぐ第１通路１１が複数箇所（本実施形態では３箇所）に形成されている。各第１通路１１は、開閉バルブを有する配管（図示せず）に連結されており、これらの配管を介して空気が吸引され又は樹脂が供給される。   The molding die 10 is a member having an inverted shape of one surface of the molded product 104 (see FIG. 8). The molding die 10 of this embodiment is convex and corresponds to the upper part of the molding tool 100. In the molding die 10, first passages 11 that connect the inside of the molding tool 100 and the outside of the molding tool 100 are formed at a plurality of locations (three locations in the present embodiment). Each first passage 11 is connected to piping (not shown) having an open / close valve, and air is sucked or resin is supplied through these piping.

暫定型２０は、成形型１０と重なることで成形型１０との間に成形品１０４（図８参照）よりも大きな拡大空間２２（図４参照）を形成する部材である。本実施形態の暫定型２０は凹状であり、成形具１００の下方部分にあたる。暫定型２０には、成形具１００の内部と成形具１００の外部をつなぐ第２通路２１が形成されている。第２通路２１は、開閉バルブを有する配管（図示せず）に連結されており、この配管を介して空気の供給及び吸引が行われる。また、暫定型２０は、拡大空間２２に面する暫定面２３を有している。   The temporary mold 20 is a member that forms an enlarged space 22 (see FIG. 4) that is larger than the molded product 104 (see FIG. 8) between the temporary mold 20 and the mold 10. The temporary mold 20 of the present embodiment is concave and corresponds to the lower part of the forming tool 100. In the temporary mold 20, a second passage 21 that connects the inside of the forming tool 100 and the outside of the forming tool 100 is formed. The 2nd channel | path 21 is connected with piping (not shown) which has an on-off valve, and supply and suction | inhalation of air are performed through this piping. The provisional mold 20 has a provisional surface 23 that faces the expansion space 22.

弾性フィルム３０は、成形型１０と暫定型２０の間に配置されている。この弾性フィルム３０と成形型１０で画された成形部３１において、成形品１０４が成形される。弾性フィルム３０は高い伸縮性を有しており、成形型１０又は暫定型２０の形状に沿って変形できるように構成されている。一例として、弾性フィルム３０はシリコーン樹脂製のフィルムで形成されていてもよく、フッ素樹脂製のフィルムで形成されていてもよい。なお、本実施形態の弾性フィルム３０は、平面膜状に形成されており、その厚みは、後述する隙間調整部材５０の高さ（厚さ）よりも大きくなるよう構成されている。   The elastic film 30 is disposed between the mold 10 and the temporary mold 20. In the molding part 31 defined by the elastic film 30 and the molding die 10, a molded product 104 is molded. The elastic film 30 has high stretchability and is configured to be deformable along the shape of the mold 10 or the temporary mold 20. As an example, the elastic film 30 may be formed of a film made of a silicone resin, or may be formed of a film made of a fluororesin. In addition, the elastic film 30 of this embodiment is formed in planar film shape, and the thickness is comprised so that it may become larger than the height (thickness) of the clearance gap adjustment member 50 mentioned later.

固定部材４０は、成形型１０と暫定型２０を固定するための部材である。本実施形態では、固定部材４０としてボルトを使用しているが、他の部材であってもよい。例えば、成形を行う際、成形型１０と暫定型２０が互いに離れる方向に力がかかるが、この力に耐えうるものであれば成形型１０と暫定型２０の両方に係止するフック状の部材を固定部材４０として採用してもよい。   The fixing member 40 is a member for fixing the molding die 10 and the temporary die 20. In the present embodiment, a bolt is used as the fixing member 40, but another member may be used. For example, when molding is performed, a force is applied in a direction in which the mold 10 and the temporary mold 20 are separated from each other, but a hook-like member that can be locked to both the mold 10 and the temporary mold 20 as long as it can withstand this force. May be employed as the fixing member 40.

隙間調整部材５０は、成形型１０と暫定型２０によって挟持される部材であって、高さ（厚さ）を変更できるように構成されている。隙間調整部材５０は、その高さを変更することにより、拡大空間２２の大きさを調整することができる。本実施形態の隙間調整部材５０は、いわゆるシムであるが、これに代えてジャッキボルトを採用してもよく、また、傾斜部を有する一組の部材の相対位置を変えて高さを変更するような構成を採用してもよい。   The gap adjusting member 50 is a member that is sandwiched between the molding die 10 and the temporary die 20 and is configured so that the height (thickness) can be changed. The gap adjusting member 50 can adjust the size of the enlarged space 22 by changing its height. The gap adjusting member 50 of the present embodiment is a so-called shim, but instead of this, a jack bolt may be adopted, and the height is changed by changing the relative position of a pair of members having inclined portions. Such a configuration may be adopted.

＜成形方法＞
次に、本実施形態に係る成形方法について説明する。図２から図８は、本実施形態に係る成形方法を順に示した図である。 <Molding method>
Next, the molding method according to this embodiment will be described. 2 to 8 are diagrams sequentially illustrating the molding method according to the present embodiment.

まず、図２に示すように、暫定型２０の内面（暫定面２３）に沿うようにして弾性フィルム３０を暫定型２０に取り付ける。具体的には、暫定型２０を弾性フィルム３０で覆い、その状態で暫定型２０と弾性フィルム３０との間の空気を第２通路２１から排出する。これにより、弾性フィルム３０は暫定型２０の暫定面２３に密着し、暫定型２０の形状に変形する。   First, as shown in FIG. 2, the elastic film 30 is attached to the temporary mold 20 along the inner surface (temporary surface 23) of the temporary mold 20. Specifically, the temporary mold 20 is covered with the elastic film 30, and the air between the temporary mold 20 and the elastic film 30 is discharged from the second passage 21 in this state. As a result, the elastic film 30 is brought into close contact with the provisional surface 23 of the provisional mold 20 and deformed into the shape of the provisional mold 20.

続いて、図３に示すように、暫定型２０の形状に変形した弾性フィルム３０に沿って繊維１０１を配置する。つまり、弾性フィルム３０の成形型１０（図１参照）に対向する面に繊維１０１を敷き詰める。   Subsequently, as shown in FIG. 3, the fibers 101 are arranged along the elastic film 30 deformed into the shape of the temporary mold 20. That is, the fibers 101 are spread on the surface of the elastic film 30 that faces the mold 10 (see FIG. 1).

続いて、図４に示すように、弾性フィルム３０の端部及び隙間調整部材５０を挟むようにして、成形型１０を暫定型２０と重ね合わせる。そして、この状態で固定部材４０によって暫定型２０と成形型１０を固定する。なお、弾性フィルム３０の端部は全周に渡って成形型１０と暫定型２０の間に挟まれており、これにより弾性フィルム３０は成形型１０及び暫定型２０に固定される。また、このとき弾性フィルム３０と成形型１０で画される成形部３１の容積は、成形品１０４（図８参照）の体積よりも大きい。つまり、成形部３１の容積に対する繊維１０１の量の割合（繊維密度）は、成形品１０４の体積に対する繊維の量の割合よりも小さい。   Subsequently, as shown in FIG. 4, the mold 10 is overlapped with the temporary mold 20 so as to sandwich the end portion of the elastic film 30 and the gap adjusting member 50. In this state, the temporary mold 20 and the mold 10 are fixed by the fixing member 40. Note that the end portion of the elastic film 30 is sandwiched between the molding die 10 and the temporary die 20 over the entire circumference, whereby the elastic film 30 is fixed to the molding die 10 and the temporary die 20. At this time, the volume of the molded part 31 defined by the elastic film 30 and the mold 10 is larger than the volume of the molded product 104 (see FIG. 8). That is, the ratio of the amount of the fibers 101 to the volume of the molded part 31 (fiber density) is smaller than the ratio of the amount of the fibers to the volume of the molded product 104.

続いて、図５に示すように、成形部３１の空気を吸引する真空引きを行う。図５の例では、中央に位置する第１通路１１に連結された配管の開閉バルブを閉めて、左右に位置する第１通路１１を介して成形部３１の空気を吸引する。このような真空引きを行うことで、成形部３１に樹脂１０２を供給する際に空気が成形部３１に取り残されるのを防ぐことができる。なお、成形部３１の真空引きを行う際には、弾性フィルム３０が成形型１０側に引き寄せられないように、第２通路２１からも吸引を行う。   Subsequently, as shown in FIG. 5, evacuation for sucking air of the molding part 31 is performed. In the example of FIG. 5, the opening / closing valve of the pipe connected to the first passage 11 located at the center is closed, and the air of the molding part 31 is sucked through the first passage 11 located on the left and right. By performing such evacuation, it is possible to prevent air from being left in the molding unit 31 when the resin 102 is supplied to the molding unit 31. In addition, when evacuating the molding part 31, suction is also performed from the second passage 21 so that the elastic film 30 is not drawn toward the molding die 10 side.

続いて、図６に示すように、成形部３１に樹脂１０２を供給する。図６の例では、左右の第１通路１１を介して引き続き成形部３１の空気を吸引しつつ、中央の第１通路１１から所定圧力で樹脂１０２を成形部３１に供給する。これにより、成形部３１では中央から左右へ向かう樹脂１０２の流れができ、成形部３１の隅々にまで樹脂１０２が供給される。なお、成形部３１に樹脂１０２を供給する時点では、繊維密度が小さいため、繊維１０１による抵抗は小さい。   Subsequently, as shown in FIG. 6, the resin 102 is supplied to the molding unit 31. In the example of FIG. 6, the resin 102 is supplied from the central first passage 11 to the molding portion 31 with a predetermined pressure while continuing to suck air from the molding portion 31 through the left and right first passages 11. As a result, the resin 102 flows from the center to the left and right in the molding part 31, and the resin 102 is supplied to every corner of the molding part 31. In addition, since the fiber density is small at the time of supplying the resin 102 to the molding part 31, the resistance by the fiber 101 is small.

続いて、図７に示すように、左右に位置する第１通路１１に連結される配管の開閉バルブを閉めて樹脂１０２の流れを止める。そして、中央に位置する第１通路１１を介して樹脂１０２を所定の圧力で成形部３１に供給し、この状態を維持する。さらに、この状態において、第２通路２１を介して樹脂１０２の圧力よりも大きい高圧空気１０３を暫定型２０と弾性フィルム３０の間に供給する。これにより、弾性フィルム３０は成形型１０側に付勢されて、暫定型２０の暫定面２３から離間する。このとき、成形部３１の容積は、成形品１０４の体積と一致する（繊維１０１の厚さによる決まる容積となる）。   Subsequently, as shown in FIG. 7, the flow of the resin 102 is stopped by closing the opening / closing valve of the pipe connected to the first passage 11 located on the left and right. And the resin 102 is supplied to the shaping | molding part 31 with the predetermined | prescribed pressure through the 1st channel | path 11 located in the center, and this state is maintained. Further, in this state, high pressure air 103 larger than the pressure of the resin 102 is supplied between the temporary mold 20 and the elastic film 30 through the second passage 21. As a result, the elastic film 30 is urged toward the mold 10 and is separated from the provisional surface 23 of the provisional mold 20. At this time, the volume of the molding part 31 coincides with the volume of the molded product 104 (the volume is determined by the thickness of the fiber 101).

その後、樹脂１０２が硬化するまで、弾性フィルム３０が暫定面２３から離間した状態を維持する。本実施形態の樹脂１０２は熱硬化性樹脂であり、樹脂１０２を成形具１００に供給する時点で成形型１０は加熱されている。そのため、樹脂１０２は所定時間後に硬化して繊維１０１を含んだプラスチック、すなわちＦＲＰが所定の形状に成形される。なお、パスカルの原理により、弾性フィルム３０の表面には高圧空気１０３から均一の圧力が加わる。そのため、弾性フィルム３０は伸縮性を有しているにもかかわらず、表面に大きな凹凸は生じない。その結果、成形品１０４の表面にも大きな凹凸が生じることはない。   Thereafter, the elastic film 30 is kept away from the provisional surface 23 until the resin 102 is cured. The resin 102 of the present embodiment is a thermosetting resin, and the mold 10 is heated when the resin 102 is supplied to the molding tool 100. Therefore, the resin 102 is cured after a predetermined time, and a plastic containing the fibers 101, that is, FRP is formed into a predetermined shape. Note that, due to Pascal's principle, a uniform pressure is applied from the high-pressure air 103 to the surface of the elastic film 30. Therefore, although the elastic film 30 has stretchability, large unevenness is not generated on the surface. As a result, there is no large unevenness on the surface of the molded product 104.

最後に、図８に示すように、第１通路１１からの樹脂１０２の供給及び第２通路２１からの高圧空気１０３の供給を止めて、成形型１０を暫定型２０から取り外す。そして、成形品１０４を成形具１００から取り出す。以上で、所定の形状を有する成形品１０４が完成する。   Finally, as shown in FIG. 8, the supply of the resin 102 from the first passage 11 and the supply of the high-pressure air 103 from the second passage 21 are stopped, and the mold 10 is removed from the temporary mold 20. Then, the molded product 104 is taken out from the molding tool 100. The molded product 104 having a predetermined shape is thus completed.

このように、本実施形態によれば、樹脂１０２を成形具１００に供給する際には、繊維１０１による抵抗を小さくすることができる。そのため、樹脂１０２が硬化する前に樹脂１０２を成形具１００の隅々にまで供給することができる。また、弾性フィルム３０と暫定型２０の間に高圧空気１０３を供給するか否かの制御で、成形部３１の容積を変更することができる。そのため、本実施形態では、高圧空気１０３の精密な圧力制御等を行うための設備は不要である。さらに、成形品１０４の他方の面は、弾性フィルム３０で成形することができるため、成形品１０４の両面を成形型で成形する場合に比べて、より簡易な設備で実施することができる。   Thus, according to this embodiment, when the resin 102 is supplied to the molding tool 100, the resistance due to the fibers 101 can be reduced. Therefore, the resin 102 can be supplied to every corner of the molding tool 100 before the resin 102 is cured. Further, the volume of the molding unit 31 can be changed by controlling whether or not the high-pressure air 103 is supplied between the elastic film 30 and the temporary mold 20. Therefore, in this embodiment, equipment for performing precise pressure control or the like of the high-pressure air 103 is unnecessary. Furthermore, since the other surface of the molded product 104 can be molded with the elastic film 30, it can be implemented with simpler equipment than when both surfaces of the molded product 104 are molded with a mold.

（第２実施形態）
＜成形具の構成＞
次に、第２実施形態に係る成形具２００の構成について説明する。図９は、成形具２００の分解断面図である。図９に示すように、成形具２００は、成形具１００と同様に、成形型１０と、暫定型２０と、弾性フィルム３０と、固定部材４０と、隙間調整部材５０と、を備えている。このうち、成形型１０が凹状であって成形具２００の下方部分にあたる点で、第１実施形態の場合と異なる。また、暫定型２０が凸状であって成形具２００の上方部分にあたる点でも、第１実施形態の場合と異なる。それ以外の点については、一部寸法が異なる等を除き本実施形態に係る成形具２００と第１実施形態に係る成形具１００とは基本的に同じ構成を有している。 (Second Embodiment)
<Configuration of molding tool>
Next, the configuration of the forming tool 200 according to the second embodiment will be described. FIG. 9 is an exploded cross-sectional view of the forming tool 200. As shown in FIG. 9, the molding tool 200 includes a molding die 10, a temporary die 20, an elastic film 30, a fixing member 40, and a gap adjustment member 50, as with the molding tool 100. Among these, it differs from the case of 1st Embodiment by the point in which the shaping | molding die 10 is concave shape and hits the lower part of the shaping | molding tool 200. FIG. The provisional mold 20 is also different from that of the first embodiment in that it is convex and corresponds to the upper part of the molding tool 200. With respect to other points, the molding tool 200 according to the present embodiment and the molding tool 100 according to the first embodiment have basically the same configuration except that some dimensions are different.

＜成形方法＞
次に、本実施形態に係る成形方法について説明する。図１０及び図１１は、本実施形態に係る成形方法の一部を示した図である。本実施形態では、まず、図１０に示すように、暫定型２０の暫定面２３を弾性フィルム３０で覆い、その状態で暫定型２０と弾性フィルム３０との間の空気を第２通路２１から排出する。これにより、弾性フィルム３０は暫定型２０の暫定面２３に密着し、暫定型２０の形状に変形する。また、図１０に示すように、成形型１０に沿って繊維１０１を配置する。 <Molding method>
Next, the molding method according to this embodiment will be described. 10 and 11 are views showing a part of the molding method according to the present embodiment. In the present embodiment, first, as shown in FIG. 10, the temporary surface 23 of the temporary mold 20 is covered with the elastic film 30, and the air between the temporary mold 20 and the elastic film 30 is discharged from the second passage 21 in this state. To do. As a result, the elastic film 30 is brought into close contact with the provisional surface 23 of the provisional mold 20 and deformed into the shape of the provisional mold 20. Further, as shown in FIG. 10, the fibers 101 are arranged along the mold 10.

続いて、図１１に示すように、弾性フィルム３０の端部及び隙間調整部材５０を挟んで、成形型１０を暫定型２０と重ね合わせる。そして、この状態で固定部材４０によって暫定型２０と成形型１０を固定する。   Subsequently, as shown in FIG. 11, the mold 10 is overlapped with the temporary mold 20 with the end portion of the elastic film 30 and the gap adjusting member 50 interposed therebetween. In this state, the temporary mold 20 and the mold 10 are fixed by the fixing member 40.

これ以降の工程は、第１実施形態の図５から図８を用いて説明した内容と基本的に同じである。つまり、成形部３１を真空引きした後、その成形部３１に樹脂１０２を供給し、高圧空気１０３を暫定型２０と弾性フィルム３０の間に供給することで、弾性フィルム３０を暫定型２０の暫定面２３から離間させる。そして、この状態で樹脂１０２を硬化させることで、成形品１０４が完成する。   The subsequent steps are basically the same as those described with reference to FIGS. 5 to 8 of the first embodiment. That is, after the molding part 31 is evacuated, the resin 102 is supplied to the molding part 31, and the high-pressure air 103 is supplied between the temporary mold 20 and the elastic film 30, so that the elastic film 30 is provisionally attached to the temporary mold 20. Separated from the surface 23. Then, the molded product 104 is completed by curing the resin 102 in this state.

以上のように、本実施形態では成形型１０が凹状であり暫定型２０が凸状であるが、第１実施形態の場合と同様の作用効果を得ることができる。   As described above, in this embodiment, the mold 10 is concave and the temporary mold 20 is convex. However, the same operational effects as in the first embodiment can be obtained.

（第３実施形態）
＜成形具の構成＞
次に、第３実施形態に係る成形具３００の構成について説明する。図１２は、成形具３００の分解断面図である。図１２に示すように、成形具３００は、成形具１００と同様に、成形型１０と、暫定型２０と、弾性フィルム３０と、固定部材４０と、隙間調整部材５０と、を備えている。このうち、成形型１０が成形具２００の下方部分にあたる点で、第１実施形態の場合と異なる。また、暫定型２０が成形具２００の上方部分にあたる点でも、第１実施形態の場合と異なる。それ以外の点については、一部寸法が異なる等を除き本実施形態に係る成形具３００と第１実施形態に係る成形具１００とは基本的に同じ構成を有している。 (Third embodiment)
<Configuration of molding tool>
Next, the configuration of the forming tool 300 according to the third embodiment will be described. FIG. 12 is an exploded cross-sectional view of the forming tool 300. As shown in FIG. 12, the molding tool 300 includes the molding die 10, the temporary die 20, the elastic film 30, the fixing member 40, and the gap adjustment member 50, as with the molding tool 100. Among these, it differs from the case of 1st Embodiment by the point which the shaping | molding die 10 hits the lower part of the shaping | molding tool 200. FIG. The provisional mold 20 is also different from the first embodiment in that the temporary mold 20 corresponds to the upper part of the molding tool 200. Regarding the other points, the molding tool 300 according to the present embodiment and the molding tool 100 according to the first embodiment basically have the same configuration except that some dimensions are different.

＜成形方法＞
次に、本実施形態に係る成形方法について説明する。図１３及び図１４は、本実施形態に係る成形方法の一部を示した図である。本実施形態では、まず、図１３に示すように、成形型１０に沿って繊維１０１を配置する。 <Molding method>
Next, the molding method according to this embodiment will be described. 13 and 14 are views showing a part of the forming method according to the present embodiment. In the present embodiment, first, the fibers 101 are arranged along the mold 10 as shown in FIG.

続いて、図１４に示すように、弾性フィルム３０の端部及び隙間調整部材５０を挟んで、成形型１０を暫定型２０と重ね合わせ、暫定型２０と成形型１０を固定する。ただし、本実施形態では、成形型１０を暫定型２０と重ね合わせるのに伴って、成形型１０に沿って配置された繊維を弾性フィルム３０で覆い、当該弾性フィルム３０を引き伸ばしつつ成形型１０の形状に沿って変形させる。   Subsequently, as illustrated in FIG. 14, the mold 10 is overlapped with the temporary mold 20 with the end portion of the elastic film 30 and the gap adjusting member 50 interposed therebetween, and the temporary mold 20 and the mold 10 are fixed. However, in the present embodiment, as the mold 10 is overlapped with the temporary mold 20, the fibers arranged along the mold 10 are covered with the elastic film 30, and the elastic film 30 is stretched while the elastic film 30 is stretched. Deform along the shape.

これ以降の工程は、第１実施形態の図５から図８を用いて説明した内容と基本的に同じである。つまり、成形部３１を真空引きした後、その成形部３１に樹脂１０２を供給し、高圧空気１０３を暫定型２０と弾性フィルム３０の間に供給することで、弾性フィルム３０を暫定型２０の暫定面２３から離間させる。そして、この状態で樹脂１０２を硬化させることで、成形品１０４が完成する。ただし、本実施形態では、成形部３１に樹脂１０２を供給する際に、弾性フィルム３０は暫定型２０の形状に変形する。   The subsequent steps are basically the same as those described with reference to FIGS. 5 to 8 of the first embodiment. That is, after the molding part 31 is evacuated, the resin 102 is supplied to the molding part 31, and the high-pressure air 103 is supplied between the temporary mold 20 and the elastic film 30, so that the elastic film 30 is provisionally attached to the temporary mold 20. Separated from the surface 23. Then, the molded product 104 is completed by curing the resin 102 in this state. However, in the present embodiment, when the resin 102 is supplied to the molding unit 31, the elastic film 30 is deformed into the shape of the provisional mold 20.

以上のように、本実施形態では弾性フィルム３０を変形させるにあたり、暫定型２０と弾性フィルム３０との間の空気を吸引する工程は不要となる。また、第１実施形態の場合と同様の作用効果も得ることができる。   As described above, in the present embodiment, when the elastic film 30 is deformed, the step of sucking air between the temporary mold 20 and the elastic film 30 is not necessary. Moreover, the same effect as the case of 1st Embodiment can also be acquired.

（第４実施形態）
＜成形具の構成＞
次に、第４実施形態に係る成形具４００の構成について説明する。図１５は、成形具４００の分解断面図である。図１５に示すように、成形具４００は、成形具１００と同様に、成形型１０と、暫定型２０と、弾性フィルム３０と、固定部材４０と、隙間調整部材５０と、を備えている。このうち、成形型１０が凹状であって成形具２００の下方部分にあたる点で、第１実施形態の場合と異なる。また、暫定型２０が凸状であって成形具２００の上方部分にあたる点でも、第１実施形態の場合と異なる。それ以外の点については、一部寸法が異なる等を除き本実施形態に係る成形具４００と第１実施形態に係る成形具１００とは基本的に同じ構成を有している。つまり、成形具４００は、第２実施形態の成形具２００と基本的に同じ構成を有している（図９参照）。 (Fourth embodiment)
<Configuration of molding tool>
Next, the configuration of the forming tool 400 according to the fourth embodiment will be described. FIG. 15 is an exploded cross-sectional view of the forming tool 400. As shown in FIG. 15, the molding tool 400 includes the molding die 10, the temporary die 20, the elastic film 30, the fixing member 40, and the gap adjustment member 50, similarly to the molding tool 100. Among these, it differs from the case of 1st Embodiment by the point in which the shaping | molding die 10 is concave shape and hits the lower part of the shaping | molding tool 200. FIG. The provisional mold 20 is also different from that of the first embodiment in that it is convex and corresponds to the upper part of the molding tool 200. With respect to other points, the molding tool 400 according to the present embodiment and the molding tool 100 according to the first embodiment have basically the same configuration except that some dimensions are different. That is, the forming tool 400 has basically the same configuration as the forming tool 200 of the second embodiment (see FIG. 9).

＜成形方法＞
次に、本実施形態に係る成形方法について説明する。図１６及び図１７は、本実施形態に係る成形方法の一部を示した図である。本実施形態では、まず、図１６に示すように、成形型１０に沿って繊維１０１を配置する。 <Molding method>
Next, the molding method according to this embodiment will be described. 16 and 17 are views showing a part of the forming method according to the present embodiment. In the present embodiment, first, as shown in FIG. 16, the fibers 101 are arranged along the mold 10.

続いて、図１７に示すように、弾性フィルム３０の端部及び隙間調整部材５０を挟んで、成形型１０を暫定型２０と重ね合わせ、暫定型２０と成形型１０を固定する。ただし、本実施形態では、成形型１０を暫定型２０と重ね合わせるのに伴って、当該弾性フィルム３０を引き伸ばしつつ暫定型２０の形状に沿って変形させる。   Subsequently, as shown in FIG. 17, the mold 10 is overlapped with the temporary mold 20 with the end portion of the elastic film 30 and the gap adjusting member 50 interposed therebetween, and the temporary mold 20 and the mold 10 are fixed. However, in this embodiment, as the molding die 10 is overlapped with the temporary die 20, the elastic film 30 is stretched and deformed along the shape of the temporary die 20.

これ以降の工程は、第１実施形態の図５から図８を用いて説明した内容と基本的に同じである。つまり、成形部３１を真空引きした後、その成形部３１に樹脂１０２を供給し、高圧空気１０３を暫定型２０と弾性フィルム３０の間に供給することで、弾性フィルム３０を暫定型２０の暫定面２３から離間させる。そして、この状態で樹脂１０２を硬化させることで、成形品１０４が完成する。   The subsequent steps are basically the same as those described with reference to FIGS. 5 to 8 of the first embodiment. That is, after the molding part 31 is evacuated, the resin 102 is supplied to the molding part 31, and the high-pressure air 103 is supplied between the temporary mold 20 and the elastic film 30, so that the elastic film 30 is provisionally attached to the temporary mold 20. Separated from the surface 23. Then, the molded product 104 is completed by curing the resin 102 in this state.

以上のように、本実施形態では成形型１０が凹状であり暫定型２０が凸状であるが、第３実施形態の場合と同様に、弾性フィルム３０を変形させるにあたり、暫定型２０と弾性フィルム３０との間の空気を吸引する工程は不要となる。また、第１実施形態の場合と同様の作用効果も得ることができる。   As described above, in this embodiment, the mold 10 is concave and the temporary mold 20 is convex. However, as in the case of the third embodiment, when the elastic film 30 is deformed, the temporary mold 20 and the elastic film The process of sucking air between 30 is unnecessary. Moreover, the same effect as the case of 1st Embodiment can also be acquired.

以上、実施形態について図を参照して説明したが、具体的な構成はこれらの実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。   The embodiments have been described above with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the present invention can be applied even if there is a design change or the like without departing from the scope of the invention. included.

本発明に係る成形方法は、樹脂を成形具に供給する際に繊維による抵抗を小さくすることができ、かつ、これを簡易な設備で実施することができる。そのため、ＦＲＰ成形の技術分野において有益である。   The molding method according to the present invention can reduce the resistance caused by the fibers when supplying the resin to the molding tool, and can implement this with simple equipment. Therefore, it is useful in the technical field of FRP molding.

１０ 成形型
２０ 暫定型
２２ 拡大空間
３０ 弾性フィルム
３１ 成形部
１００、２００、３００、４００ 成形具
１０１ 繊維
１０２ 樹脂
１０３ 高圧空気
１０４ 成形品 DESCRIPTION OF SYMBOLS 10 Mold 20 Temporary mold 22 Expansion space 30 Elastic film 31 Molding part 100, 200, 300, 400 Molding tool 101 Fiber 102 Resin 103 High pressure air 104 Molded article

Claims (5)

成形品の一方の面の反転形状を有する凸状の成形型と、
前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凹状の暫定型と、
前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、
前記暫定型を前記弾性フィルムで覆い、前記暫定型と前記弾性フィルムの間の空気を排出して、前記弾性フィルムを前記暫定型の形状に変形させる工程と、
変形した前記弾性フィルムに沿って繊維を配置する工程と、
前記繊維を配置した後、前記成形型と前記暫定型を重ね合わせる工程と、
前記弾性フィルムと前記成形型とによって画された成形部に樹脂を供給する工程と、
前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む繊維強化プラスチックの成形方法。 A convex mold having an inverted shape of one surface of the molded product;
A concave provisional mold having a provisional surface facing the expansion space, forming an enlarged space larger than the molded product between the mold and the mold;
Using a molding tool provided with an elastic film disposed between the mold and the temporary mold,
Covering the temporary mold with the elastic film, discharging air between the temporary mold and the elastic film, and deforming the elastic film into the shape of the temporary mold;
Arranging the fibers along the deformed elastic film;
After placing the fibers, superimposing the mold and the temporary mold;
Supplying resin to a molded part defined by the elastic film and the mold;
After supplying resin to the molding part, high-pressure air is supplied between the elastic film and the temporary mold to separate the elastic film from the temporary surface of the temporary mold, and in that state the resin in the molding part is And a step of curing the fiber-reinforced plastic. 成形品の一方の面の反転形状を有する凹状の成形型と、
前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凸状の暫定型と、
前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、
前記暫定型を前記弾性フィルムで覆い、前記暫定型と前記弾性フィルムの間の空気を排出して、前記弾性フィルムを前記暫定型の形状に変形させる工程と、
前記成形型に沿って繊維を配置する工程と、
前記繊維を配置した後、前記成形型と前記暫定型を重ね合わせる工程と、
前記弾性フィルムと前記成形型とによって画された成形部に樹脂を供給する工程と、
前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む繊維強化プラスチックの成形方法。 A concave mold having an inverted shape of one surface of the molded product;
A convex provisional mold having a provisional surface facing the expansion space, forming an enlarged space larger than the molded product between the mold and the mold;
Using a molding tool provided with an elastic film disposed between the mold and the temporary mold,
Covering the temporary mold with the elastic film, discharging air between the temporary mold and the elastic film, and deforming the elastic film into the shape of the temporary mold;
Arranging the fibers along the mold;
After placing the fibers, superimposing the mold and the temporary mold;
Supplying resin to a molded part defined by the elastic film and the mold;
After supplying resin to the molding part, high-pressure air is supplied between the elastic film and the temporary mold to separate the elastic film from the temporary surface of the temporary mold, and in that state the resin in the molding part is And a step of curing the fiber-reinforced plastic. 成形品の一方の面の反転形状を有する凸状の成形型と、
前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凹状の暫定型と、
前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、
前記成形型に沿って繊維を配置する工程と、
前記成形型に沿って配置された繊維を前記弾性フィルムで覆い、当該弾性フィルムを引き伸ばしつつ前記成形型の形状に沿って変形させながら前記成形型と前記暫定型を重ね合わせる工程と、
前記弾性フィルムと前記成形型とによって画される成形部に樹脂を供給し、前記弾性フィルムを前記暫定型の形状に変形させる工程と、
前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む繊維強化プラスチックの成形方法。 A convex mold having an inverted shape of one surface of the molded product;
A concave provisional mold having a provisional surface facing the expansion space, forming an enlarged space larger than the molded product between the mold and the mold;
Using a molding tool provided with an elastic film disposed between the mold and the temporary mold,
Arranging the fibers along the mold;
Covering the fibers disposed along the mold with the elastic film, and superimposing the mold and the temporary mold while stretching the elastic film while deforming along the shape of the mold;
Supplying resin to a molding portion defined by the elastic film and the mold, and deforming the elastic film into the shape of the temporary mold;
After supplying resin to the molding part, high-pressure air is supplied between the elastic film and the temporary mold to separate the elastic film from the temporary surface of the temporary mold, and in that state the resin in the molding part is And a step of curing the fiber-reinforced plastic. 成形品の一方の面の反転形状を有する凹状の成形型と、
前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する凸状の暫定型と、
前記成形型と前記暫定型の間に配置される弾性フィルムと、を備えた成形具を使用し、
前記成形型に沿って繊維を配置する工程と、
当該弾性フィルムを引き伸ばしつつ前記暫定型の形状に沿って変形させながら前記成形型と前記暫定型を重ね合わせる工程と、
前記弾性フィルムと前記成形型とによって画される成形部に樹脂を供給する工程と、
前記成形部に樹脂を供給した後、前記弾性フィルムと前記暫定型の間に高圧空気を供給して、前記弾性フィルムを前記暫定型の暫定面から離間させ、その状態で前記成形部内の樹脂を硬化させる工程と、を含む繊維強化プラスチックの成形方法。 A concave mold having an inverted shape of one surface of the molded product;
A convex provisional mold having a provisional surface facing the expansion space, forming an enlarged space larger than the molded product between the mold and the mold;
Using a molding tool provided with an elastic film disposed between the mold and the temporary mold,
Arranging the fibers along the mold;
Superimposing the mold and the temporary mold while deforming along the shape of the temporary mold while stretching the elastic film;
Supplying a resin to a molding portion defined by the elastic film and the molding die;
After supplying resin to the molding part, high-pressure air is supplied between the elastic film and the temporary mold to separate the elastic film from the temporary surface of the temporary mold, and in that state the resin in the molding part is And a step of curing the fiber-reinforced plastic. 成形品の一方の面の反転形状を有する成形型と、
前記成形型と重なり前記成形型との間に前記成形品よりも大きな拡大空間を形成し、前記拡大空間に面する暫定面を有する暫定型と、
前記成形型と前記暫定型の間に配置される弾性フィルムと、を備え、
前記弾性フィルムは、当該弾性フィルムが前記暫定型の暫定面に沿って変形し、かつ、当該弾性フィルムと前記成形型とによって画される成形部に繊維及び樹脂が供給された状態で、前記弾性フィルムと前記暫定型との間に高圧空気が供給されると、当該弾性フィルムが前記暫定型の暫定面から離間するように構成されている、繊維強化プラスチックの成形具。 A mold having an inverted shape of one surface of the molded product;
A provisional mold having a provisional surface facing the expansion space, forming an enlarged space larger than the molded product between the mold and the mold;
An elastic film disposed between the mold and the temporary mold,
The elastic film is formed in a state where the elastic film is deformed along a provisional surface of the provisional mold and fibers and a resin are supplied to a molding portion defined by the elastic film and the molding die. A fiber reinforced plastic molding tool configured such that when high-pressure air is supplied between a film and the temporary mold, the elastic film is separated from the temporary surface of the temporary mold.
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