Wax mould die for electric submersible pump impeller casting

The utility model discloses a wax mould die for electric submersible pump impeller casting. The wax mould die comprises an impeller rear cover plate wax mould, an impeller front cover plate wax mould and manufacturing dies of the impeller rear cover plate wax mould and the impeller front cover plate wax mould. The impeller rear cover plate wax mould is welded to the impeller front cover plate wax mould to form a complete wax mould for impeller casting. The manufacturing die of the impeller rear cover plate wax mould comprises a lower die seat, a lower fastening block, an outer ring, a profiled block, an upper cover, an upper fastening block, a pressing block, an upper die core, a conical body and a lower die core, wherein the lower fastening block, the outer ring, the profiled block and the upper cover are sequentially installed and connected on the lower die seat. The manufacturing die of the impeller front cover plate wax mould comprises a die seat, a lower fastening block, a lower die, an upper die, an upper fastening block, a core sleeve and a pressing plate, wherein the lower fastening block, the lower die and the upper die are sequentially installed and connected on the die seat. The wax mould die has the advantages that the wax mould size precision is high, deformation is small, the surface smoothness is high, demoulding is convenient, and the rate of finished products is high; the wax mould die is widely applied to the precise casting technology of electric submersible pump impellers.