| 摘要 |
PURPOSE: To provide a plurality of rows of many molds and to manufacture thermoplastic resin foamed molded forms with male threads in mass production by providing the forms molded in a cavity in the state engaged with a male threads molding cavity mold. CONSTITUTION: A movable mold 11 and a fixed mold 12 are clamped to form a cavity 41 in the state that male threads molding cavity molds 13 formed with female threads 13b at the inner periphery are disposed in the molds 11, 12. Foamed thermoplastic resin particle raw material is filled in the cavity 41, heated to be expanded to form a thermoplastic resin foamed molded form. After the form 1 is cooled, the mold 11 is opened, and the cavity 13 mold is rotated to be drawn out axially of a mold opening operation. Thus, the forms can be manufactured by mass production without interfering the mold 13 telescoped within the cavity 41 and the mold even in the structure in which many molds are provided in the plurality of the rows. |
