There exist 12 circumferentially equispaced dummy clubs with through-hole on a aluminum alloy bowl castings

so radial multiple core pulling should be adopted in die casting.If the angle pin-slide side core pulling mechanisms are adopted in the mould

12 angle pin-slide mechanisms should be considered for radial core pulling

which results in the complex of mould structure and un-desirable whole shape.The technical characteristics of the die casting were analyzed

and a die casting die with special structure was presented

in which radial multiple core pulling was realized by angle pin and rack and turn table mechanism

simplifying the structure of the mould.Aiming at the features of high wrapping force of casting hole to castings and thin wall

an ejector sleeve was adopted in the die casting die to pull out the castings and to obtain the smooth surface.