Be applied to overlength casting forming's ejecting structure of mould

The utility model discloses a be applied to overlength casting forming's ejecting structure of mould, including microscler cover half and microscler movable mould, microscler movable mould dorsal part is provided with ejector fixing board and thimble push pedal, last thimble and the centre hole of being provided with of ejector fixing board, the centre hole adopts oval structure, and the length of its major axis is greater than the diameter of thimble, through adopting this kind of centre hole structure, prevented that the thimble from taking place to warp in casting process, guaranteed the smooth drawing of patterns of follow -up foundry goods. 本实用新型公开了种应用于超长铸件成形的模具顶出结构，包括长形定模和长形动模，所述长形动模背侧设置有顶针固定板和顶针推板，所述顶针固定板上设置有顶针和顶针孔，所述顶针孔采用椭圆形结构，且其长轴的长度大于顶针的直径；通过采用这种顶针孔结构，防止了顶针在铸造过程中发生变形，保证了后续铸件顺利脱模。