Based on the analysis of configuration

dimension and process ability of shell assembly structure

the DCC400 die press was adopted

and the parting surface was set at the outer surface.In corepulling mechanism

four groups of oblique guide pillar driving the angle-lift splits were considered to realize the open-mould ways of drawing-core before pull-out

and the position and installation of the three inlay pieces in the mould were determined.Because of the size of the parts inside the cavity of 55 mm larger than mouth size of 45.6 mm

movable slide block demoulding was adopted to push out the part with the ejector pins.Through determining the location of the mold parts according to the parting surface

the mold structure and the assembly relationship of each parts were determined.