| 摘要 |
The present invention relates to an injection molding apparatus comprising: a stripper plate which is able to be elevated, wherein the inner space is vertically penetrated; an upper core which is located on the upper side of the stripper plate and is able to be elevated; a lower core which is located on the lower side of the stripper plate; an inner core part which is located at the inner space of the stripper plate and is able to be linearly moved; a fluid injection core part which is located at the inner space of the stripper plate, is in contact with the inner core part and includes an injection hole; and a molded product fixing core part which is combined to the stripper plate in order to be moved when the fluid injection core part is covered. A cavity in which a molten resin is injected is formed between the external side of the inner core part and the internal sides of the upper core and the lower core. When the inner core part is separated from the fluid injection core part, a molded product is separated from the inner core part by the expansion of the molded product while operation fluids are injected between the molded product formed in the cavity and the inner core part through the injection hole. |
