US 12,173,846 B2
Method for manufacturing high-pressure tank, high-pressure tank manufacturing apparatus, and non-transitory storage medium
Tomohiko Nishiyama, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Mar. 14, 2022, as Appl. No. 17/654,809.
Claims priority of application No. 2021-042902 (JP), filed on Mar. 16, 2021.
Prior Publication US 2022/0299161 A1, Sep. 22, 2022
Int. Cl. B29C 70/34 (2006.01); B29C 70/44 (2006.01); F17C 1/06 (2006.01); B29L 31/00 (2006.01)
CPC F17C 1/06 (2013.01) [B29C 70/345 (2013.01); B29C 70/443 (2013.01); B29L 2031/7156 (2013.01); F17C 2201/0109 (2013.01); F17C 2203/0604 (2013.01); F17C 2209/2154 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A high-pressure tank manufacturing apparatus comprising:
a mold including a lower die and an upper die, wherein the lower die and the upper die together define a cavity where an intermediate including a liner and a fiber bundle wound around the liner is arranged;
an injection mechanism configured to inject a molten resin into the cavity and increase a pressure on the molten resin; and
a pressure increasing mechanism configured to increase an internal pressure of the intermediate arranged in the cavity when the injection mechanism increases the pressure on the molten resin, wherein
the lower die includes
an injection port on an upper surface of the lower die,
resin channels extending on the upper surface from the injection port to the cavity,
a plurality of resin storage spaces provided in the resin channels, and the injection mechanism includes
a plurality of pistons each disposed in each of the resin storage spaces and configured to press the molten resin stored in a corresponding resin storage space among the plurality of resin storage spaces to cause the molten resin to flow into the cavity, and
an actuator configured to move the plurality of pistons.