JP6218562B2 - Molding material - Google Patents

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JP6218562B2
JP6218562B2 JP2013232294A JP2013232294A JP6218562B2 JP 6218562 B2 JP6218562 B2 JP 6218562B2 JP 2013232294 A JP2013232294 A JP 2013232294A JP 2013232294 A JP2013232294 A JP 2013232294A JP 6218562 B2 JP6218562 B2 JP 6218562B2
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molding
hollow
hollow members
peripheral surface
members
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裕志 山口
裕志 山口
誠一 大山
誠一 大山
秀久 仁科
秀久 仁科
勉 小川
勉 小川
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Kurashiki Kako Co Ltd
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本発明は、第1及び第2成形用中空部材の長手方向一端部同士を接続した、繊維強化プラスチック製中空成形品を加熱・加圧成形するのに用いられる成形用部材に関するものである。   The present invention relates to a molding member used for heating and pressure-molding a fiber-reinforced plastic hollow molded article in which one longitudinal ends of first and second molding hollow members are connected to each other.

従来から、繊維強化プラスチック製中空成形品を加熱・加圧成形するのに用いられる成形用中空部材が知られている。   2. Description of the Related Art Conventionally, molding hollow members used for heating and pressure molding of fiber reinforced plastic hollow molded products are known.

特許文献1に示す成形用中空部材は、シリコーンゴム製中空体と、この中空体に埋設された織布とを備えている。この成形用中空部材は、金型を用いて圧縮一体成形されている。そして、上述のように、中空体に織布を埋設することにより、成形用中空部材の強度が増大するので、成形用中空部材の耐圧性及び耐収縮性を向上させることができる。したがって、成形用中空部材を用いて中空成形品を加熱・加圧成形する際に、成形用中空部材が破裂するのを抑制できるとともに、成形用中空部材を繰り返し加熱・加圧成形に用いた場合にも、成形用中空部材が収縮するのを抑えることができる。   The hollow member for molding shown in Patent Document 1 includes a hollow body made of silicone rubber and a woven fabric embedded in the hollow body. This molding hollow member is compression-molded using a mold. And since the intensity | strength of the hollow member for shaping | molding increases by embedding a woven fabric in a hollow body as mentioned above, the pressure | voltage resistance and shrinkage resistance of the hollow member for shaping | molding can be improved. Therefore, when a hollow molded product is heated and pressure-molded using the molding hollow member, the molding hollow member can be prevented from bursting, and the molding hollow member is repeatedly used for heating and pressure molding. In addition, shrinkage of the molding hollow member can be suppressed.

特開2009−179001号公報JP 2009-179001 A

ところで、上記中空成形品を長尺化する場合、設備替えして、成形用中空部材を長尺化することも考えられるが、そうすると、設備投資が必要となり、これは、コストの点で好ましくない。   By the way, when making the above hollow molded article long, it is conceivable to change the equipment and lengthen the hollow member for molding, but in that case, capital investment is required, which is not preferable in terms of cost. .

そこで、二つの成形用中空部材を既存設備で製造して、これらの成形用中空部材の長手方向一端部同士を接続することにより、長尺化することが考えられる。   Therefore, it is conceivable that the two molding hollow members are manufactured with existing equipment and the longitudinal ends of these molding hollow members are connected to each other so as to be elongated.

このように、成形用中空部材の長手方向一端部同士を接続する場合、その接続を確実にするために、成形用中空部材の位置決めを行うことが望ましい。また、成形用中空部材の長手方向一端部同士の接続部における空気漏れを抑制するために、その接続部のシール性を確保する必要もある。   Thus, when connecting the longitudinal direction one end parts of the hollow member for shaping | molding, in order to ensure the connection, it is desirable to position the hollow member for shaping | molding. Moreover, in order to suppress the air leak in the connection part of the longitudinal direction one ends of the shaping | molding hollow member, it is also necessary to ensure the sealing performance of the connection part.

本発明は、かかる点に鑑みてなされたものであり、その課題とするところは、成形用中空部材の位置決めを行うとともに、成形用中空部材の長手方向一端部同士の接続部におけるシール性を確保することにある。   This invention is made in view of this point, and the place made into the subject is ensuring the sealing performance in the connection part of the longitudinal direction one end parts of the hollow member for shaping | molding while positioning the hollow member for shaping | molding. There is to do.

上記の課題を解決するため、本発明は、第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面に凹部を形成するとともに、外周面に凹部内に嵌合される凸部を形成した接続用中空部材を第1及び第2成形用中空部材の長手方向一端部同士の接続部内に接着剤を介して嵌合したことを特徴とする。   In order to solve the above-described problems, the present invention forms a recess on the inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members and is fitted in the recess on the outer peripheral surface. The connecting hollow member in which the convex portions are formed is fitted into the connecting portion between the longitudinal ends of the first and second molding hollow members via an adhesive.

具体的には、本発明は、第1及び第2成形用中空部材の長手方向一端部同士を接続した、繊維強化プラスチック製中空成形品を加熱・加圧成形するのに用いられる成形用部材を対象とし、次のような解決手段を講じた。   Specifically, the present invention provides a molding member used for heating and pressure-molding a fiber-reinforced plastic hollow molded article in which the longitudinal ends of the first and second molding hollow members are connected to each other. Targeted the following solutions.

すなわち、第1の発明は、上記各成形用中空部材は、シリコーンゴム製中空体を有しており、上記第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面には、上記第1及び第2成形用中空部材に跨がって凹部が上記成形用部材の外周面に達しないように全周に亘って形成されており、上記第1及び第2成形用中空部材の長手方向一端部同士の接続部内に接着剤を介して嵌合され、外周面における上記凹部と対応する部分に該凹部と略相補的な形状で且つ該凹部内に嵌合される凸部が全周に亘って形成されたシリコーンゴム製接続用中空部材を備えているものである。 That is, according to the first invention, each of the molding hollow members has a silicone rubber hollow body, and the inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members. Is formed over the entire circumference so as not to reach the outer peripheral surface of the molding member, straddling the first and second molding hollow members. A convex portion that is fitted into the connecting portion between the longitudinal ends of the hollow member via an adhesive, and that is substantially complementary to the concave portion and fitted into the concave portion at a portion corresponding to the concave portion on the outer peripheral surface. The part is provided with a silicone rubber connecting hollow member formed over the entire circumference.

これによれば、第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面に、第1及び第2成形用中空部材に跨がって凹部が成形用部材の外周面に達しないように全周に亘って形成されている。また、接続用中空部材の外周面における凹部と対応する部分に、凹部と略相補的な形状で且つ凹部内に嵌合される凸部が全周に亘って形成されている。このため、これらの凸部及び凹部により、成形用中空部材を接続用中空部材に位置決めすることができる。 According to this, on the inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members, the recess extends across the first and second molding hollow members and the outer periphery of the molding member. It is formed over the entire circumference so as not to reach the surface . In addition, a convex portion that is substantially complementary to the concave portion and fitted into the concave portion is formed over the entire circumference in a portion corresponding to the concave portion on the outer peripheral surface of the connecting hollow member. For this reason, the hollow member for shaping | molding can be positioned in the hollow member for connection by these convex parts and recessed parts.

また、凹部は、第1及び第2成形用中空部材の長手方向一端部同士の接続時には、接着剤の溜まりとなる。このため、第1及び第2成形用中空部材の長手方向一端部同士の接続部におけるシール性を確保することができる。   Moreover, a recessed part becomes a reservoir of an adhesive agent at the time of the connection of the longitudinal direction one ends of the 1st and 2nd hollow member for shaping | molding. For this reason, the sealing performance in the connection part of the longitudinal direction one end parts of the 1st and 2nd hollow member for shaping | molding is securable.

尚、繊維強化プラスチックは、ガラス繊維・炭素繊維などをプラスチック中に分散さ
せることにより強化・軽量化した材料である。
The fiber reinforced plastic is a material reinforced and reduced in weight by dispersing glass fiber, carbon fiber and the like in the plastic.

第2の発明は、上記第1の発明において、上記凹部及び上記凸部は、その周方向断面が略三角形状に形成されているものである。   In a second aspect based on the first aspect, the concave portion and the convex portion have a circumferential cross section formed in a substantially triangular shape.

これによれば、凹部及び凸部の周方向断面が略三角形状に形成されているので、その加工を容易に行うことができる。   According to this, since the circumferential cross section of the concave portion and the convex portion is formed in a substantially triangular shape, the processing can be easily performed.

第3の発明は、上記第1又は第2の発明において、上記各成形用中空部材は、上記中空体の内周面を覆うように設けられた布製内層をさらに有しているものである。   According to a third invention, in the first or second invention, each of the molding hollow members further includes a cloth inner layer provided so as to cover an inner peripheral surface of the hollow body.

ところで、内層の繊維が成形用中空部材の長手方向一端部から飛び出すと、飛び出た繊維により第1及び第2成形用中空部材の長手方向一端面同士の間に隙間ができて、第1及び第2成形用中空部材の長手方向一端部同士の接続が不確実になる虞がある。   By the way, when the fibers in the inner layer jump out from one end in the longitudinal direction of the molding hollow member, the jumped fibers create a gap between the one end surfaces in the longitudinal direction of the first and second molding hollow members. There is a possibility that the connection between the longitudinal ends of the two molding hollow members is uncertain.

ここで、本発明によれば、第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面に、第1及び第2成形用中空部材に跨がって凹部が成形用部材の外周面に達しないように全周に亘って形成されている。このように、凹部を形成することにより、成形用中空部材の長手方向一端部から飛び出た内層の繊維を除去することができる。このため、第1及び第2成形用中空部材の長手方向一端部同士の接続を確実にすることができる。 Here, according to the present invention, a recess is formed across the first and second molding hollow members on the inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members. It is formed over the entire circumference so as not to reach the outer peripheral surface of the member for use . In this way, by forming the concave portion, it is possible to remove the fibers of the inner layer protruding from one end portion in the longitudinal direction of the molding hollow member. For this reason, the connection of the longitudinal direction one end parts of the 1st and 2nd hollow member for shaping | molding can be ensured.

第4の発明は、上記第1〜第3のいずれか1つの発明において、上記各成形用中空部材は、上記中空体の外周面を覆うように設けられた樹脂製コート層をさらに有しているものである。   According to a fourth invention, in any one of the first to third inventions, each of the molding hollow members further includes a resin coat layer provided so as to cover an outer peripheral surface of the hollow body. It is what.

これによれば、中空体の外周面を覆うように樹脂製コート層が設けられているので、成形用部材の外周面側をある程度の剛性を有するものにすることができる。このため、成形用部材をプリプレグから引き抜けないのを抑制することができる。   According to this, since the resin coating layer is provided so as to cover the outer peripheral surface of the hollow body, the outer peripheral surface side of the molding member can have a certain degree of rigidity. For this reason, it can suppress that the member for shaping | molding does not pull out from a prepreg.

本発明によれば、第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面に、第1及び第2成形用中空部材に跨がって凹部が成形用部材の外周面に達しないように全周に亘って形成され、接続用中空部材の外周面における凹部と対応する部分に、凹部と略相補的な形状で且つ凹部内に嵌合される凸部が全周に亘って形成されているため、これらの凸部及び凹部により、成形用中空部材を接続用中空部材に位置決めすることができる。また、凹部は、第1及び第2成形用中空部材の長手方向一端部同士の接続時には、接着剤の溜まりとなるため、第1及び第2成形用中空部材の長手方向一端部同士の接続部におけるシール性を確保することができる。 According to the present invention, the concave portion is formed on the inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members across the first and second molding hollow members. A convex portion that is formed over the entire circumference so as not to reach the outer peripheral surface and that has a shape substantially complementary to the concave portion and fitted into the concave portion is formed in the portion corresponding to the concave portion on the outer peripheral surface of the connecting hollow member. Since it is formed over the circumference, the hollow member for molding can be positioned on the hollow member for connection by these convex portions and concave portions. Moreover, since a recessed part becomes a pool of an adhesive agent at the time of the connection of the longitudinal direction one end parts of the 1st and 2nd shaping | molding hollow member, the connection part of the longitudinal direction one end parts of the 1st and 2nd shaping | molding hollow member The sealing performance can be ensured.

本発明の実施形態に係る成形用部材を示す縦断面図である。It is a longitudinal cross-sectional view which shows the member for shaping | molding which concerns on embodiment of this invention. 成形用部材の要部を示す拡大縦断面図である。It is an expanded longitudinal cross-sectional view which shows the principal part of the member for shaping | molding. 成形用中空部材を示す正面図である。It is a front view which shows the hollow member for shaping | molding. 接続用中空部材を示す斜視図である。It is a perspective view which shows the hollow member for a connection. 成形用部材の製造工程の一部を示す斜視図である。It is a perspective view which shows a part of manufacturing process of the member for shaping | molding.

以下、本発明の実施形態を図面に基づいて詳細に説明する。以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

本発明の実施形態に係る成形用部材(成形用ブラダー)1は、図1及び図2に示すように、第1及び第2成形用中空部材2,3の長手方向(長さ方向)一端部同士を接続した、繊維強化プラスチック(以下、FRPという)製中空成形品(例えば中空パイプや中空フレーム)をオートクレーブ成形するのに用いられるものであって、全長が、例えば、約15mのものである。   As shown in FIGS. 1 and 2, a molding member (molding bladder) 1 according to an embodiment of the present invention has one end in the longitudinal direction (length direction) of the first and second molding hollow members 2 and 3. It is used for autoclave molding of hollow molded products (for example, hollow pipes and hollow frames) made of fiber reinforced plastic (hereinafter referred to as FRP) connected to each other, and the total length is, for example, about 15 m. .

第1及び第2成形用中空部材2,3は、その横断面が互いに略同一の形状・大きさである。具体的に、各成形用中空部材2,3は、図3にも示すように、その内外周面の横断面形状が略長方形状のシリコーンゴム製中空体20,30を備えている。このシリコーンゴムは、耐熱性・耐薬品性・撥水性・電気絶縁性などに優れている。各成形用中空部材2,3は、中空体20,30の内周面を略全体に亘って覆うように設けられた織布製補強内層(以下、単に「内層」という)21,31と、中空体20,30の外周面を略全体に亘って覆うように設けられた樹脂製コートフィルム(コート層)22,32をさらに有している。内層21,31の織布は、例えば、ポリエチレン繊維製のものである。コートフィルム22,32は、例えば、フッ素樹脂製のものである。   The first and second molding hollow members 2 and 3 have substantially the same shape and size in cross section. Specifically, as shown in FIG. 3, each of the molding hollow members 2 and 3 includes silicone rubber hollow bodies 20 and 30 whose inner and outer peripheral surfaces have a substantially rectangular cross-sectional shape. This silicone rubber is excellent in heat resistance, chemical resistance, water repellency, electrical insulation and the like. Each of the molding hollow members 2 and 3 includes woven fabric reinforcing inner layers (hereinafter simply referred to as “inner layers”) 21 and 31 provided so as to cover the entire inner peripheral surfaces of the hollow bodies 20 and 30. Resin coat films (coat layers) 22 and 32 are provided so as to cover substantially the entire outer peripheral surface of the hollow bodies 20 and 30. The woven fabric of the inner layers 21 and 31 is made of polyethylene fiber, for example. The coat films 22 and 32 are made of, for example, a fluororesin.

第1及び第2成形用中空部材2,3の長手方向一端部同士の接続部4(以下、単に「第1及び第2成形用中空部材2,3の接続部4」ともいう)における内周面には、第1及び第2成形用中空部材2,3に跨がって凹部40が成形用部材1の外周面に達しないように全周に亘って形成されている。この凹部40は、成形用部材1の外周面に達しないように形成されている。凹部40は、その周方向断面(横断面)が略三角形状に形成されている。凹部40における第1成形用中空部材2側の部分40aと第2成形用中空部材3側の部分40bとは、その周方向断面が互いに略同一の形状(略三角形状)・大きさである。これらの第1成形用中空部材2側の部分40aと第2成形用中空部材3側の部分40bとは、各成形用中空部材2,3の長手方向一端面の内周側の角を面取りすることにより形成されている。この面取りにより、各成形用中空部材2,3の長手方向一端部から飛び出た内層21,31の繊維を除去することができる。また、凹部40は、第1及び第2成形用中空部材2,3の長手方向一端部同士の接続時には、後述する接着剤Bの溜まりとなる。 Inner circumference of the connecting portion 4 between the longitudinal ends of the first and second molding hollow members 2 and 3 (hereinafter also simply referred to as “the connecting portion 4 of the first and second molding hollow members 2 and 3”). On the surface, the recess 40 is formed over the entire circumference so as not to reach the outer peripheral surface of the molding member 1 across the first and second molding hollow members 2 and 3. The recess 40 is formed so as not to reach the outer peripheral surface of the molding member 1. The concave portion 40 has a circumferential cross section (transverse cross section) formed in a substantially triangular shape. The first molding hollow member 2 side portion 40a and the second molding hollow member 3 side portion 40b of the recess 40 have substantially the same shape (substantially triangular shape) and size in the circumferential cross section. The first molding hollow member 2 side portion 40a and the second molding hollow member 3 side portion 40b chamfer the corner on the inner peripheral side of one end surface in the longitudinal direction of each molding hollow member 2,3. It is formed by. By this chamfering, the fibers of the inner layers 21 and 31 protruding from one end in the longitudinal direction of each of the molding hollow members 2 and 3 can be removed. Moreover, the recessed part 40 becomes a pool of the adhesive agent B mentioned later at the time of the connection of the longitudinal direction one ends of the 1st and 2nd hollow members 2 and 3 for molding.

第1及び第2成形用中空部材2,3の接続部4内には、接続用中空部材(ジョイントキャップ部材)5が接着剤Bを介して嵌合されている。この接続用中空部材5は、図4にも示すように、その横断面形状が第1及び第2成形用中空部材2,3の内周面の横断面形状と略相補的な形状(略長方形状)のシリコーンゴム製のものである。接着剤Bは、例えば、シリコーンゴム系のものである。尚、図2では、図を見易くするため、接着剤Bの図示を省略している。   A connecting hollow member (joint cap member) 5 is fitted through an adhesive B in the connecting portion 4 of the first and second forming hollow members 2 and 3. As shown in FIG. 4, the connecting hollow member 5 has a cross-sectional shape that is substantially complementary to the cross-sectional shape of the inner peripheral surfaces of the first and second molding hollow members 2 and 3 (substantially rectangular). Shape) made of silicone rubber. The adhesive B is, for example, a silicone rubber type. In FIG. 2, illustration of the adhesive B is omitted for easy understanding of the drawing.

接続用中空部材5の外周面における凹部40と対応する部分(長手方向中央部)には、凹部40と略相補的な形状(周方向断面が略三角形状)の凸部50が全周に亘って形成されている。この凸部50は凹部40内に嵌合される。これらの凸部50及び凹部40は、成形用中空部材2,3を接続用中空部材5に位置決めするのに用いられる。   On the outer peripheral surface of the connecting hollow member 5, a convex portion 50 having a shape substantially complementary to the concave portion 40 (circumferential cross section is substantially triangular) extends over the entire circumference at a portion corresponding to the concave portion 40 (central portion in the longitudinal direction). Is formed. The convex portion 50 is fitted into the concave portion 40. These convex portions 50 and concave portions 40 are used to position the forming hollow members 2 and 3 on the connecting hollow member 5.

接続用中空部材5の外周面の長手方向両端部は、先細りテーパ形状に形成されている。このため、第1及び第2成形用中空部材2,3の長手方向一端部同士の接続時には、接続用中空部材5の外周面の長手方向両端部と第1及び第2成形用中空部材2,3の内周面との間の部分は、接着剤Bの溜まりとなる。したがって、第1及び第2成形用中空部材2,3の接続部4におけるシール性を確保することができる。   Both ends in the longitudinal direction of the outer peripheral surface of the connecting hollow member 5 are formed in a tapered shape. For this reason, at the time of connecting the longitudinal ends of the first and second molding hollow members 2, 3, both longitudinal ends of the outer peripheral surface of the connection hollow member 5 and the first and second molding hollow members 2, 2 are connected. A portion between the inner peripheral surface 3 and the adhesive B is a reservoir. Therefore, it is possible to ensure the sealing performance at the connection portion 4 of the first and second molding hollow members 2 and 3.

上記成形用部材1は、上述の如く構成を採用することにより、全体として中空部材となる。また、成形用部材1の長手方向の一端部内にはエンドキャップ6が嵌合される一方、その他端部にはアルミ管7が連結される。成形用部材1は、各成形用中空部材2,3や接続用中空部材5が上述の如く耐熱性に優れたシリコーンゴムからなることなどにより、中空成形品のオートクレーブ成形時における加熱温度(約180度)に耐える耐熱性を有している。このオートクレーブ成形方法の詳細は後述する。   The molding member 1 becomes a hollow member as a whole by adopting the configuration as described above. An end cap 6 is fitted into one end portion in the longitudinal direction of the molding member 1, and an aluminum tube 7 is connected to the other end portion. The molding member 1 has a heating temperature (about 180) at the time of autoclave molding of a hollow molded product because the molding hollow members 2 and 3 and the connecting hollow member 5 are made of silicone rubber having excellent heat resistance as described above. Heat resistance). Details of this autoclave molding method will be described later.

以下、図5等を参照しながら、成形用部材1の製造方法を説明する。まず、図示しない心棒(芯型)の周りに織布、シリコーンゴム製ゴムシート及びフッ素樹脂製樹脂フィルムをこの順に巻き付ける。そして、織布、ゴムシート及び樹脂フィルムを心棒に巻き付けた状態で、図示しない上型と下型とで挟み込み、織布、ゴムシート及び樹脂フィルムを圧縮一体成形する。それから、上型と下型とを開き、圧縮一体成形された織布、ゴムシート及び樹脂フィルムから心棒を抜き取る。その後、圧縮一体成形された織布、ゴムシート及び樹脂フィルムを二次加硫炉の中に入れ、シリコーンゴムの特性を安定化させるため、二次加硫(再加熱)する。そして、二次加硫された織布、ゴムシート及び樹脂フィルムを所定の長さに切断する。以上により、成形用中空部材が完成する。この成形用中空部材は2つ、準備する(以下、これらの成形用中空部材のうち一方を第1成形用中空部材2と、他方を第2成形用中空部材3という)。また、上述の切断により、内層21,31の繊維が各成形用中空部材2,3の長手方向一端部から飛び出ることがある。   Hereinafter, the manufacturing method of the molding member 1 will be described with reference to FIG. First, a woven fabric, a silicone rubber rubber sheet, and a fluororesin resin film are wound around a mandrel (core mold) (not shown) in this order. Then, in a state where the woven fabric, the rubber sheet, and the resin film are wound around the mandrel, the woven fabric, the rubber sheet, and the resin film are compression-integrated and molded by sandwiching between an upper mold and a lower mold (not shown). Then, the upper mold and the lower mold are opened, and the mandrel is extracted from the woven fabric, the rubber sheet and the resin film which are compression-integrated. Thereafter, the woven fabric, the rubber sheet and the resin film that are compression-molded are placed in a secondary vulcanizing furnace and subjected to secondary vulcanization (reheating) in order to stabilize the characteristics of the silicone rubber. Then, the secondary vulcanized woven fabric, rubber sheet and resin film are cut to a predetermined length. Thus, the molding hollow member is completed. Two of these molding hollow members are prepared (hereinafter, one of these molding hollow members is referred to as a first molding hollow member 2 and the other is referred to as a second molding hollow member 3). Moreover, the fiber of the inner layers 21 and 31 may jump out from the longitudinal direction one end part of each shaping | molding hollow member 2 and 3 by the above-mentioned cutting | disconnection.

次に、各成形用中空部材2,3の長手方向一端面の内周側の角を面取りする。この面取りにより、各成形用中空部材2,3の長手方向一端部から飛び出た内層21,31の繊維を除去することができる。   Next, the corner on the inner peripheral side of one end surface in the longitudinal direction of each of the molding hollow members 2 and 3 is chamfered. By this chamfering, the fibers of the inner layers 21 and 31 protruding from one end in the longitudinal direction of each of the molding hollow members 2 and 3 can be removed.

次に、各成形用中空部材2,3の長手方向一端部の内周面における接続用中空部材5との接着面と接続用中空部材5の外周面とを脱脂する。それから、各成形用中空部材2,3の接着面及び接続用中空部材5の外周面に接着剤Bを塗布する。そして、接続用中空部材5の長手方向両側部分を第1及び第2成形用中空部材2,3の長手方向一端部内にそれぞれ挿入嵌合して、第1及び第2成形用中空部材2,3の長手方向一端面同士を突き合わせる。このとき、接続用中空部材5の凸部50及び成形用中空部材2,3の凹部40により、成形用中空部材2,3を接続用中空部材5に位置決めすることができる。また、上述の嵌合により、成形用中空部材2,3の接着面及び接続用中空部材5の外周面との間の部分から余剰接着剤Bが、第1及び第2成形用中空部材2,3の長手方向一端面の間を通って成形用中空部材2,3の外周面側へ溢れ出る。この溢れ出た接着剤Bは拭き取られる。   Next, the bonding surface with the connecting hollow member 5 and the outer peripheral surface of the connecting hollow member 5 on the inner peripheral surface of one end in the longitudinal direction of each of the forming hollow members 2 and 3 are degreased. Then, the adhesive B is applied to the bonding surfaces of the molding hollow members 2 and 3 and the outer peripheral surface of the connecting hollow member 5. The first and second molding hollow members 2 and 3 are inserted and fitted into the longitudinal ends of the first and second molding hollow members 2 and 3, respectively. The end faces in the longitudinal direction of each other are butted together. At this time, the forming hollow members 2 and 3 can be positioned on the connecting hollow member 5 by the convex portion 50 of the connecting hollow member 5 and the concave portion 40 of the forming hollow members 2 and 3. Further, due to the above-described fitting, the surplus adhesive B from the portion between the bonding surface of the molding hollow members 2 and 3 and the outer peripheral surface of the connection hollow member 5 becomes the first and second molding hollow members 2 and 2. 3 overflows from one end surface in the longitudinal direction to the outer peripheral surface side of the molding hollow members 2 and 3. The overflowing adhesive B is wiped off.

次に、第1及び第2成形用中空部材2,3の接続部4における外周面に第1及び第2成形用中空部材2,3に跨がって図示しないマスキングテープを全周に亘って貼る。また、第1及び第2成形用中空部材2,3の接続部4における外周面に第1及び第2成形用中空部材2,3に跨がってマスキングテープ8(図5を参照)を長手方向に延びるように貼る。   Next, a masking tape (not shown) is stretched over the entire circumference on the outer peripheral surface of the connecting portion 4 of the first and second molding hollow members 2 and 3 across the first and second molding hollow members 2 and 3. Paste. Further, the masking tape 8 (see FIG. 5) is extended longitudinally across the first and second molding hollow members 2 and 3 on the outer peripheral surface of the connecting portion 4 of the first and second molding hollow members 2 and 3. Paste to extend in the direction.

次に、図5に示すように、第1及び第2成形用中空部材2,3の接続部4を固定金具9により固定する。具体的に、この固定金具9は、第1固定金具90と第2固定金具91とを備えている。この第1固定金具90は、成形用中空部材2,3の外周面の横断面形状と略相補的な形状(略ハット状)の板状部材である。第2固定金具91は平板状部材である。そして、第1及び第2成形用中空部材2,3の接続部4を第1及び第2固定金具90,91により取り囲む。それから、第1及び第2固定金具90,91同士をクリップ92により固定する。以上により、第1及び第2成形用中空部材2,3の固定が完了する。   Next, as shown in FIG. 5, the connection portions 4 of the first and second molding hollow members 2, 3 are fixed by a fixture 9. Specifically, the fixture 9 includes a first fixture 90 and a second fixture 91. The first fixing fitting 90 is a plate-like member having a shape (substantially hat shape) substantially complementary to the cross-sectional shape of the outer peripheral surface of the molding hollow members 2 and 3. The second fixture 91 is a flat plate member. And the connection part 4 of the 1st and 2nd shaping | molding hollow members 2 and 3 is surrounded by the 1st and 2nd fixing bracket 90,91. Then, the first and second fixing brackets 90 and 91 are fixed by the clip 92. Thus, the fixing of the first and second molding hollow members 2 and 3 is completed.

次に、互いに嵌合した成形用中空部材2,3及び接続用中空部材5を図示しない接着剤硬化炉の中に入れ、所定の温度(例えば、150℃)下で所定の時間(例えば、2時間)、硬化させる。   Next, the molding hollow members 2 and 3 and the connection hollow member 5 fitted to each other are placed in an adhesive curing furnace (not shown), and are subjected to a predetermined time (for example, 2 ° C.) at a predetermined temperature (for example, 150 ° C.). Time), cure.

次に、互いに嵌合した成形用中空部材2,3及び接続用中空部材5を接着剤硬化炉から取り出し、固定金具9及びマスキングテープ8を取り外す。   Next, the forming hollow members 2 and 3 and the connecting hollow member 5 fitted to each other are taken out from the adhesive curing furnace, and the fixing fitting 9 and the masking tape 8 are removed.

以上により、成形用部材1が完成する。   Thus, the molding member 1 is completed.

以下、成形用部材1を用いたFRP製中空成形品のオートクレーブ成形方法を説明する。まず、成形用部材1の周りにプラスチック、繊維、及びプラスチックをこの順に巻き付ける。そして、これらプラスチック及び繊維をローラーで成形用部材1の周囲に押し付けて積層プリプレグ化する。それから、この積層プリプレグを成形用部材1に巻き付けた状態でオートクレーブ(耐圧釜)の中に入れ、所定の圧力下で所定の熱を加えて硬化させる。このとき、プリプレグには外側及び内側の両側から圧力がかかるため、中空成形品を構成する面部を真っ直ぐに延ばすことができる。その後、硬化させたプリプレグをオートクレーブから取り出し、成形用部材1を抜き取る。ここで、成形用部材1は、上述の如く構成を採用することにより、可撓性・柔軟性を有しているため、成形用部材1をプリプレグから容易に引き抜くことができる。以上により、全長が約15mの中空成形品が出来上がる。   Hereinafter, an autoclave molding method for FRP hollow molded products using the molding member 1 will be described. First, plastic, fiber, and plastic are wound around the molding member 1 in this order. Then, these plastics and fibers are pressed around the molding member 1 with a roller to form a laminated prepreg. Then, the laminated prepreg is wound around the molding member 1 and placed in an autoclave (pressure vessel) and cured by applying a predetermined heat under a predetermined pressure. At this time, since pressure is applied to the prepreg from both the outer side and the inner side, the surface portion constituting the hollow molded product can be straightened. Thereafter, the cured prepreg is taken out from the autoclave, and the molding member 1 is taken out. Here, since the forming member 1 has flexibility and flexibility by adopting the configuration as described above, the forming member 1 can be easily pulled out from the prepreg. As a result, a hollow molded product having a total length of about 15 m is completed.

−効果−
以上より、本実施形態によれば、第1及び第2成形用中空部材2,3の長手方向一端部同士の接続部4における内周面に、第1及び第2成形用中空部材2,3に跨がって凹部40が成形用部材1の外周面に達しないように全周に亘って形成されている。また、接続用中空部材5の外周面における凹部40と対応する部分に、凹部40と略相補的な形状で且つ凹部40内に嵌合される凸部50が全周に亘って形成されている。このため、これらの凸部50及び凹部40により、成形用中空部材2,3を接続用中空部材5に位置決めすることができる。
-Effect-
As described above, according to the present embodiment, the first and second molding hollow members 2 and 3 are formed on the inner peripheral surface of the connection portion 4 between the longitudinal ends of the first and second molding hollow members 2 and 3. The recess 40 is formed over the entire circumference so as not to reach the outer peripheral surface of the molding member 1 . Further, a convex portion 50 having a shape substantially complementary to the concave portion 40 and fitted into the concave portion 40 is formed over the entire circumference at a portion corresponding to the concave portion 40 on the outer peripheral surface of the connecting hollow member 5. . For this reason, the molding hollow members 2 and 3 can be positioned on the connection hollow member 5 by the convex portions 50 and the concave portions 40.

また、この位置決めは、第1及び第2成形用中空部材2,3内で行っているので、位置決め手段が成形用部材1の外周面側に出て来ない。   Further, since this positioning is performed in the first and second molding hollow members 2 and 3, the positioning means does not come out on the outer peripheral surface side of the molding member 1.

また、凹部40は、第1及び第2成形用中空部材2,3の長手方向一端部同士の接続時には、接着剤Bの溜まりとなる。このため、第1及び第2成形用中空部材2,3の接続部4におけるシール性を確保することができる。   Further, the concave portion 40 serves as a reservoir for the adhesive B when the longitudinal ends of the first and second molding hollow members 2 and 3 are connected to each other. For this reason, the sealing property in the connection part 4 of the 1st and 2nd hollow members 2 and 3 for shaping | molding is securable.

また、凹部40及び凸部50の周方向断面が略三角形状に形成されているので、その加工を容易に行うことができる。   Moreover, since the circumferential cross section of the recessed part 40 and the convex part 50 is formed in the substantially triangular shape, the process can be performed easily.

また、第1及び第2成形用中空部材2,3の接続部4における内周面に、第1及び第2成形用中空部材2,3に跨がって凹部40が成形用部材1の外周面に達しないように全周に亘って形成されている。このように、凹部40を形成することにより、成形用中空部材2,3の長手方向一端部から飛び出た内層21,31の繊維を除去することができる。このため、第1及び第2成形用中空部材2,3の長手方向一端部同士の接続を確実にすることができる。 A recess 40 is formed on the inner peripheral surface of the connecting portion 4 of the first and second molding hollow members 2 and 3 so as to straddle the first and second molding hollow members 2 and 3. It is formed over the entire circumference so as not to reach the surface . In this way, by forming the recess 40, the fibers of the inner layers 21 and 31 protruding from one end in the longitudinal direction of the molding hollow members 2 and 3 can be removed. For this reason, the connection of the longitudinal direction one ends of the 1st and 2nd shaping | molding hollow members 2 and 3 can be ensured.

また、中空体20,30の外周面を覆うようにフッ素樹脂製コートフィルム22,32が設けられているので、成形用部材1の外周面側をある程度の剛性を有するものにすることができる。このため、成形用部材1をプリプレグから引き抜けないのを抑制することができる。   Moreover, since the fluororesin coat films 22 and 32 are provided so as to cover the outer peripheral surfaces of the hollow bodies 20 and 30, the outer peripheral surface side of the molding member 1 can have a certain degree of rigidity. For this reason, it can suppress that the member 1 for shaping | molding does not pull out from a prepreg.

(その他の実施形態)
上記実施形態では、二つの成形用中空部材2,3を接続したが、三つ以上の成形用中空部材を接続してもよい。
(Other embodiments)
In the above embodiment, the two hollow molding members 2 and 3 are connected, but three or more hollow molding members may be connected.

また、上記実施形態では、成形用中空部材2,3が中空体20,30、内層21,31及びコートフィルム22,32で構成されたが、これに限らず、例えば、中空体20,30及びコートフィルム22,32で構成されたり、中空体20,30のみで構成されてもよい。   Moreover, in the said embodiment, although the shaping | molding hollow members 2 and 3 were comprised by the hollow bodies 20 and 30, the inner layers 21 and 31, and the coat films 22 and 32, it is not restricted to this, For example, the hollow bodies 20 and 30 and It may be composed of the coat films 22 and 32 or may be composed only of the hollow bodies 20 and 30.

また、上記実施形態では、中空体20,30の内周面の横断面形状を略長方形状に、その外周面の横断面形状を略長方形状に形成したが、これに限らず、他の形状に形成してもよい。   Moreover, in the said embodiment, although the cross-sectional shape of the internal peripheral surface of the hollow bodies 20 and 30 was formed in the substantially rectangular shape, and the cross-sectional shape of the outer peripheral surface was formed in the substantially rectangular shape, it is not restricted to this, Other shapes You may form in.

また、上記実施形態では、凹部40及び凸部50の周方向断面を略三角形状に形成したが、これに限らず、例えば、円状に形成してもよい。   Moreover, in the said embodiment, although the circumferential cross section of the recessed part 40 and the convex part 50 was formed in the substantially triangular shape, you may form not only in this but in a circular shape, for example.

以上説明したように、本発明に係る成形用部材は、成形用中空部材の位置決めを行うとともに、成形用中空部材の長手方向一端部同士の接続部におけるシール性を確保することが必要な用途等に適用することができる。   As described above, the molding member according to the present invention positions the molding hollow member and uses the sealing member at the connecting portion between the longitudinal ends of the molding hollow member. Can be applied to.

1 成形用部材
2,3 成形用中空部材
20,30 中空体
21,31 内層
22,32 コートフィルム(コート層)
4 接続部
40 凹部
5 接続用中空部材
50 凸部
B 接着剤
DESCRIPTION OF SYMBOLS 1 Molding member 2,3 Molding hollow member 20,30 Hollow body 21,31 Inner layer 22,32 Coat film (coat layer)
4 Connection 40 Recess 5 Hollow member for connection
50 Convex B Adhesive

Claims (4)

第1及び第2成形用中空部材の長手方向一端部同士を接続した、繊維強化プラスチック製中空成形品を加熱・加圧成形するのに用いられる成形用部材であって、
上記各成形用中空部材は、シリコーンゴム製中空体を有しており、
上記第1及び第2成形用中空部材の長手方向一端部同士の接続部における内周面には、上記第1及び第2成形用中空部材に跨がって凹部が上記成形用部材の外周面に達しないように全周に亘って形成されており、
上記第1及び第2成形用中空部材の長手方向一端部同士の接続部内に接着剤を介して嵌合され、外周面における上記凹部と対応する部分に該凹部と略相補的な形状で且つ該凹部内に嵌合される凸部が全周に亘って形成されたシリコーンゴム製接続用中空部材を備えていることを特徴とする成形用部材。
A molding member used for heating and pressure molding a hollow molded product made of fiber reinforced plastic, in which longitudinal ends of the first and second molding hollow members are connected to each other.
Each of the molding hollow members has a silicone rubber hollow body,
The inner peripheral surface of the connecting portion between the longitudinal ends of the first and second molding hollow members has a recess extending over the first and second molding hollow members and the outer peripheral surface of the molding member. It is formed over the entire circumference so as not to reach
The first and second molding hollow members are fitted into a connecting portion between the longitudinal ends of the first and second molding hollow members via an adhesive, and have a shape substantially complementary to the concave portion in a portion corresponding to the concave portion on the outer peripheral surface. A molding member comprising a silicone rubber connecting hollow member in which a convex portion fitted into the concave portion is formed over the entire circumference.
請求項1記載の成形用部材において、
上記凹部及び上記凸部は、その周方向断面が略三角形状に形成されていることを特徴とする成形用部材。
The molding member according to claim 1,
The forming member, wherein the concave portion and the convex portion have a substantially triangular cross section in the circumferential direction.
請求項1又は2記載の成形用部材において、
上記各成形用中空部材は、上記中空体の内周面を覆うように設けられた布製内層をさらに有していることを特徴とする成形用部材。
The molding member according to claim 1 or 2,
Each of the molding hollow members further has a cloth inner layer provided so as to cover the inner peripheral surface of the hollow body.
請求項1〜3のいずれか1つに記載の成形用部材において、
上記各成形用中空部材は、上記中空体の外周面を覆うように設けられた樹脂製コート層をさらに有していることを特徴とする成形用部材。
In the molding member according to any one of claims 1 to 3,
Each of the molding hollow members further has a resin coating layer provided so as to cover the outer peripheral surface of the hollow body.
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