The injection molding gate had important influence on the molding quality of plastic intake manifold. To shorten the development cycle, reduce the cost and improve the product quality, the location and number of different gates for intake manifold injection molding were simulated and analyzed with the Moldflow software. The locations of potential bubble and welding mark were forecast, and finally the location and number of injection molding gates were determined, which avoided the complex process of the mould testing and repairing. The analysis results show that four point gates of regular geometric distribution is the best choice. The experiments prove that the quality of trial product sample is better with the improved mould.%为了研究注塑模具浇口对发动机塑料进气歧管成型质量的影响,缩短进气歧管开发周期,降低成本,提高产品质量,利用Moldflow软件对塑料进气歧管注塑成型中浇口位置及数量进行流动模拟分析,预测可能存在的气泡位置和熔接痕位置,通过比较分析来确定制品注塑成型中的浇口位置和数量.分析结果表明,采用呈规则几何形状分布的4个点浇口为最佳选择.试验证明:按照模拟结果制造模具,试制的产品样件质量较好.
展开▼
