| 摘要 |
PURPOSE:To more increase the number of moldings in one cycle by filling a primary injection material into the frame molding space of a cavity via the first direct gate, and filling a secondary injection material into the window molding space of a cavity via the second direct gate. CONSTITUTION:First, at the same time of clamping commencement, the tip surface of a core mold body 19 is brought into contact with the carved surface of the stationary mold plate 10. In this state, a primary injection material passed through the first conduit 29 is filled in the frame molding space 37 of a cavity whereby a frame 2 is molded. Next, when the piston rod 22 of a hydraulic cylinder 21 is made retreat therefrom, the core mold body 19 returns and becomes approximately the same as the carved surface of a movable mold plate 13 and, between the tip surface and the carved surface, a window molding space 38 is formed. In this form, after a secondary injection material B passed through the second conduit 30 is filled into the window molding space 38, the gate of the second nozzle 36 is closed by the second torpedo 40, whereby an audio half cassette 4 is bicolor-molded. |
