JP2022134516A - 高圧タンク製造装置及び高圧タンク製造方法 - Google Patents
高圧タンク製造装置及び高圧タンク製造方法 Download PDFInfo
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Abstract
Description
図1に示すように、本実施例の高圧タンク製造装置10は、高圧タンク100(図2参照)を製造する際に用いられる。
最初に、図2を参照して高圧タンク100を説明する。高圧タンク100は、燃料電池自動車に搭載され、天然ガス、水素ガス等の燃料ガスを貯蔵する。高圧タンク100は、ライナ102と、樹脂が含浸されている繊維束104と、環状部材106と、を備える。ライナ102は、ガスバリア性の樹脂材料で作製されている。ライナ102は、中央部分102aにおいて円筒形状を有している。ライナ102の先端部分102bは、中央部分102aから離間してライナ102の端に向かうのに従って、徐々に細くなっている。
図1に示すように、金型11と、ピン部20と、を備える。金型11は、上型12と下型14とを備える。上型12と下型14とが閉じられると、金型11内にキャビティ40が形成される。キャビティ40には、中間体200が配置される。キャビティ40は、中間体200の外形よりも若干大きな空間を有する。このため、キャビティ40に中間体200が配置されている状態では、キャビティ40と中間体200との間に、溶融樹脂が流れる程度の小さな隙間が形成される。なお、図1及び図5では、見易さを優先して、キャビティ40と中間体200との隙間が大きく描かれている。
次いで、高圧タンク100の製造方法を説明する。高圧タンク100では、まず、ライナ102に繊維束104を配置して環状部材106で保持することによって、中間体200が作製される。中間体200は、ライナ102の中央部分102aによって形成される中央部分200aと、ライナ102の先端部分102bによって形成される先端部分200bと、を有する。中央部分200aは、円筒形状を有する。先端部分200bは、中央部分200aから離間して、中間体200の先端に向かって、徐々に細くなっている。
中間体200は、樹脂製のライナ102が歪んで成形されることに起因して、設計値に対して歪んだ状態で作製される場合がある。中間体200が金型11に配置された段階では、中間体200は、支持部16によって支持されている。中間体200が歪んでいない場合には、キャビティ40の表面と中間体200との間には、溶融樹脂が流入するように、若干の隙間が形成される。しかしながら、実際には中間体200が歪んでいるために、支持部16によって両端が支持されている状態では、中間体200の中央部分200aが曲がってしまう。なお、中間体200とキャビティ40の表面との接触を避けるために、中間体200とキャビティ40の表面との隙間を大きくすると、含浸のために必要な樹脂量が増加してしまう。
Claims (5)
- ライナに繊維束が巻回されている中間体が配置されるキャビティを有する金型と、
前記金型に対して移動可能に配置されており、前記キャビティの表面から前記キャビティ内に突出して前記キャビティに配置される前記中間体に接触する接触位置と、前記キャビティに配置される前記中間体から離間する離間位置と、の間で移動するピン部と、を備え、
前記ピン部は、前記接触位置で、前記キャビティに流入される溶融樹脂が前記キャビティの前記表面と前記中間体との間で前記ピン部を越えて流動可能に配置されている、高圧タンク製造装置。 - 前記ピン部は、前記キャビティの前記表面から同一の方向に向かって突出している複数のピンであって、互いに離間して配置されている前記複数のピンを備える、請求項1に記載の高圧タンク製造装置。
- 前記中間体は、前記中間体の長手方向に延びる筒状の中央部分と、前記中央部分の両端のそれぞれにおいて先端に向かって徐々に細くなる先端部分と、を備え、
前記ピン部は、前記中央部分に接触する、請求項1又は2に記載の高圧タンク製造装置。 - 請求項1から3のいずれか一項に記載の高圧タンク製造装置のキャビティに、ライナに繊維束が巻回されている中間体を配置する配置工程であって、ピン部が接触位置に配置される前記配置工程と、
前記キャビティに前記溶融樹脂を注入して、前記溶融樹脂が前記キャビティの前記表面と前記中間体との間において前記ピン部を越えて流動させて前記キャビティ内に前記溶融樹脂を充填する充填工程と、
前記キャビティ内の前記溶融樹脂を前記繊維束に含浸させる含浸工程と、
前記ピン部を接触位置から離間位置に移動させる移動工程と、を備える、高圧タンク製造方法。 - 前記移動工程では、前記キャビティ内において前記溶融樹脂が硬化する前に、前記ピン部を、前記接触位置から前記離間位置に移動させる、請求項4に記載の高圧タンク製造方法。
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Application Number | Priority Date | Filing Date | Title |
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JP2021033667A JP2022134516A (ja) | 2021-03-03 | 2021-03-03 | 高圧タンク製造装置及び高圧タンク製造方法 |
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