| 摘要 |
PURPOSE:To provide a die to mold a special type plastic molded piece by a method wherein a large ejector locating at a place enclosed by a protruding section is installed in a mold having a protruding section to mold fan-shaped peripheral grooves of a molded piece. CONSTITUTION:When the 1st mold 1 and the 2nd mold 2 are clamped, a molding cavity is provided corresponding to a hollow and flat hexahedral outer wall with a fan-shaped peripheral groove 3. Vacuum holes 1a, 2a are installed over the whole surfaces of the molds 1, 2. An ejector 7 is provided at a place enclosed by the protruding section 5 and on the mold 2 having a protruding section 5 of these 1st and 2nd molds 1, 2. If the ejector 7 is advanced after the molds are opened, a molded piece a fitted to the 2nd mold 2 is released from said mold 2. A hollow section 11 is provided at a corresponding site outside of said peripheral groove 3 of the molded piece (a) and the molded piece (a) is released without fail by the ejector 7 having a wide area inspite of having a fan-shaped peripheral groove 3. |
