Bumper Of Injection Molding Casting System Design And Optimization Of Molding Parameters

With the revitalization of the mold industry, which occupies a position in the national economy has become increasingly important. Aerospace, automotive, household appliances and chemical industries such as the rapid development of large-scale injection mold making by the wider attention and application, and therefore a large injection mold design and manufacturing technology made more stringent requirements.Currently, the traditional large-scale injection mold design, in theory, the lack of basis, led to the design and manufacturing process in a series of problems encountered. Casting system for example, balance, parts warpage, cooling not guarantee the quality, weld lines and air pockets and so on. Taking a front bumper injection mold design, for example, by summarizing large-scale injection mold design principles and methods, aiming at the production of large number of multi-die repair mode, select gate unreasonable, parts molding cycle is long, the number of cavitation and forming multiple defects such as weld lines, using three-dimensional software PRO/E model of the car bumper, mold flow analysis software applicationPieces of the car bumper parts for Moldflow injection molding process optimization.In this paper, the following work on the bumper of a large injection mold gating system design and optimization.(1) Data collection on bumper, the use of Pro/E three-dimensional modeling-entity, and some parts of the model is simplified, easy to CAE's simulation analysis.(2) The structural design of the gating system used in the cold, or a combination of hot runner hot runner nozzle needle technology. At the same time using needle-type nozzle, so that products can not leave a scar into the gate, the gate into the traces of smoothing.(3) Moldflow flow analysis software through the use of modern optimization method on the data size of the traditional casting system iteration, the optimal casting program to improve the quality of forming parts.(4) The optimized cavity pressure casting system check, to predict the feasibility of the runner system for large-scale mold design reference.So, the CAD/CAE technology into the injection mold design, especially in large-scale injection mold design to a large extent, improve product quality, increase production efficiency. Molds for the production of high quality and lay a solid foundation.