Patent ID: 7604764

Claim:
A method of molding a hollow component, comprising: a first molding step for molding a first plurality of division members of a hollow component between first male dies and first female dies formed at different positions inside a mold so as to correspond to said first plurality of division members; a first welding step for combining said first female dies having said first plurality of division members formed at said first molding step and left in the first female dies, to make said first plurality of division members contact each other, forming resin paths at peripheral edges of contact parts of said first plurality of division members, and filling the resin paths with molten resin to thereby weld said first plurality of division members with each other; a second molding step for molding a second plurality of division members between second male dies and second female dies formed at different positions inside said mold so as to correspond to said second plurality of division members; and a second welding step for combining said second female dies having said second plurality of division members formed at said second molding step and left in the second female dies, to make said second plurality of division members contact each other, forming resin paths at peripheral edges of contact parts of said second plurality of division members, and filling the resin paths with molten resin to thereby weld said second plurality of division members with each other, and alternately repeating a first group of steps simultaneously performing said first molding step and said second welding step and a second group of steps simultaneously performing said second molding step and said first welding step and forming said hollow component each time either of said first group of steps and said second group of steps is performed, wherein a combination position of said first female dies in said first welding step and a combination position of said second female dies in said second welding step are the same position in said mold.