Mold Design Based On The Bottom Cover Of Rectifier And CAE Analysis

Mold industrial products is very extensive, the purpose of this study is carried out beforethe completion of mold design simulation analysis. Through the analysis of improving themold processing and injection molding process is to improve the precision of the plasticmolding. Considering many factors in actual production, so we have to study different factorsat different levels for the influence of the parameters of the objective and significance.First of all, this paper has made the detailed description for the whole plastic moulddesign: according to the estimate volume, to determine the injection molding machine and tochose the parameters for the check; Through the observation of the characteristics of theplastic card hook, we decide to adopt a pair of one module and two cavities, the single partingsurface and side gate injection mold with insert. The key of mold is to solve the partingsurface selection, the insert structure, the side of the gate location, the layout of the coolingsystem, plastic pouring system layout, etc. In the process of design, through the analysis ofthe structure of concrete, we decide to use insert so that eliminating the side core-pullingmechanism. Then this paper expounds the theory of thin walled melt flow model, momentumconservation equation, mass conservation equation. At the same time elaborated theMOLDFLOW preprocessing: the three dimensional figure imports to MOLDFLOWDOCTOR of the “simplification” of individual places, so can reduce the meshing grid appearproblem, lastly for the AMI for processing. Then on the basis of the principles of establishinggating system, we put forward two gate location scheme and gate number scheme, usingMOLDFLOW INSIGHT simulation to analyze several schemes of their problems and relativeadvantage point, to determine the side as casted position, the gate number for a single. Finallythrough orthogonal experiment of different factor on different levels for different objectiveanalysis, we determine their minimum combination of the warp, the filling time and minimumshrinkage. Injection molding parameters: mold temperature40, melt temperature240,injection pressure80MPa, the holding pressure time4s, and the maintaining pressure50MPa,for the overall AMI injection molding process analysis by this. Besides that, we put forwardtwo kinds of cooling channel and the discussion of15Cand25Ccooling water temperature of the discussion, so that we can see that uniform cooling is an important part ofthe control of warp.