The design is controlled race car in a single box baffle cavity injection mold design, specific design elements include: injection machine models to determine the surface, core-pulling mechanism and the top of the design, molding parts of the design, casting system, cooling system and reset the system design; In addition, other parts of plastic injection mold for a relatively simple design. UG rendering the use of mapping software in the control box of the three-dimensional solid baffle mold graphics, reflecting the focus of part of the design: the design of convexity modulus, core-pulling mechanism of the design. Among them, the whole convexity and the overall embedded in the choice of mode selection for analysis, and verification, in particular, die at the bottom of the cavity wall and the wall thickness calculation is an important role to play, respectively, so the use of stiffness and strength to illustrate the select the appropriate thickness to meet the needs of modeling, and then in the control box with tailgate punch dies, die, and the total assembly drawing on the main elements of the design.