Abstract:By taking several different structures of the dust wipers as an illustration,the design ideas and main points of the two kinds of injection mold of the dust wiper were introduced,one is focusing on the appearance of the products,and the other is focusing on saving materials.The injection molding process was analyzed by using mold flow analysis software,the problems that might be occurred in the injection molding process were forecasted.The mold structure was optimized in the design phase,which minimized the mold modification after the mold is finished.Trial production and small batch production proves that the dust wipers produced by the mold have excellent appearance,stable quality and high material utilization.