| 摘要 |
PURPOSE:To obtain the molding without occurrence of flashes, even if a long member has dimensional error or fluctuation by achieving injection molding, while providing a cooling fluid-spouting port at the contact part of an injection mold with a long member, and spouting the cooling fluid to the contact part. CONSTITUTION:The long member 6 in which resin part 5 is formed by extrusion, is cut into a specified length, and its final end is inserted into an injection molds composed of a cavity mold 8 and a core mold 9, and then said molds are clamped. Then, a thermal conductive material layer 16 is caused to be in contact with the final end of the long member 6. Next, resin is injected into a cavity 12 through a gate 11 from an injection nozzle 10. While the thermal conductive material layer 16 is cooled by the cooling fluid spouted from a cooling fluid spouting port 17, the spouted fluid flows along the contact part 13 with the long member 16. Consequently, the resin in the cavity 12 is rapidly cooled and caused to be high viscous, whereby the resin enters scarcely the gap of the contact part 13 and simultaneously is pushed back by the pressure of the spouted fluid directed to the cavity 12. Therefore, the resin does not enter the gap of the contact part 13, and flashes do not occur at a relief part 14. |
