| 摘要 |
PURPOSE:To provide an injection molding device wherein degasification at a position on a surface of a molded piece can be performed with a simple structure and clogging can be removed easily. CONSTITUTION:At a core 23a of a moving side core block of an injection molding device, a pyramidal tapered hole 27 is punched through by forming a small opening 27a facing a part where gas bank of a cavity generates, and a first hole 25a of a degassing hole which makes the tapered hole 27 communicate with the outside is formed. Further, a taper pin 26 is inserted into the tapered hole 27 and a slit 26a which makes the small opening 27a communicate with the first hole 25a is formed on the outer periphery of the taper pin 26. |
