This machine structure carries on the optimization design, the fuselage uses the square box basket frame structure, enhances the fuselage steel greatly. The machine adopts micro-vibration compaction molding process, can greatly improve the compression strength, so that the hardness of the sand box can reach HB90 or above, Surface roughness to improve a grade, and stabilize the quality of its products. The shock machine, part of the buffer spring, effectively reduce the impact of the machine on the base. This machine adopts cylinder, crank, connecting Rod and synchronous shaft to realize synchronous mould-starting. The control part of the machine, all use pneumatic components to achieve the overall function, simple operation and easy maintenance. The machine is easy to operate and the operation procedure can be humanized to improve the productivity effectively.