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Summary 
  Screwdriver kit, is a very complex structure but not very sophisticated products, due to the design of two parts: one part is the overall structure of the screwdriver toolbox design, the other part is the cover of the mold design, this paper carried out its the overall structure and design of the screwdriver toolbox injection mold cover a two-piece mold design and detail design process.
  First,based on the structural design UG were then exported to the virtual assembly IGS format keyshot4.0 were rendered, let the color is more close to the actual situation. 
  Secondly help mold flow analysis techniques to optimize the process parameters of mold forming, casting systems and cooling systems. In considering the appearance of the same parts, parts to determine the location of the gate at the side of the cover; molding process parameters optimized for: mold temperature of 100 ¡æ, the melt temperature of 300 ¡æ, the injection time of 1.9s; cover with lateral water mouth, forming a two-cavity mold, after the establishment of the gating system to predict its pressure and clamping force injection molding, injection molding machine specifications selected to provide a basis; cooling water temperature and IPC time was 80 ¡ãC and 30s. Molding equipment were selected based on mold flow analysis.
   The product has been designed based mold injection mold UG Wizard module. Then design, gating system and cooling system based on proe5, 0 conduct mold flow analysis to determine the mode. Difficulty lies in mold design several key parts of the core pulling, this uses a bevel pillar core-pulling mechanism, and side slider pulling mechanism and so on. After the completion of the molded part is called standard mold design, 3D design to achieve a whole deputy mold. Finally, draw a 2D assembly drawings and part drawings. 
Keywords: virtual assembly; injection mold; CAE analysis; Bevel column; side slider;


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