快速循环注塑工艺在汽车内饰产品中的应用研究

发布时间：2018-02-05 18:52

本文关键词： 快速热循环注塑注塑工艺模具设计汽车内饰　出处：《湖北工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：快速热循环注塑成型技术便是其中备受关注的新型绿色注塑成型技术之一。与常规注塑不同,快速热循环注塑成型技术工艺是在模具型腔表面温度略高于成型树脂的玻璃化转变温度时对树脂进行充型的一种注塑工艺,并在高温保持后实现产品的快速冷却,以此改善塑料制品的表面质量,避免二次加工工艺,减少对环境及操作人员的危害。重点阐述了快速热循环注塑成型技术,探究了快速热循环注塑成型工艺,并对实验结果进行了讨论,结果表明在快速热循环注塑成型中各工艺参数对熔体流动性影响程度大小依次为:型腔表面温度型腔高度注射速度熔体温度。简要介绍了某汽车内饰产品的基本情况,分析了某汽车内饰产品快速热循环模具的设计流程,并对其进行了快速热循环模具设计;设计了相关实验对其进行验证,并详细的阐述了试验原料和吹塑参数、模具响应评估、试验结果与讨论。建立了注塑成型的充填过程和翘曲变形过程的数学模型,并简要介绍了Moldflow软件以及基于Moldflow的数值分析流程;重点对某汽车内饰产品进行了数值分析,包括Moldflow前处理、热流道浇注系统的创建、分析类型及工艺参数的设置并完成了数值分析;设计了正交实验;分析了工艺参数对翘曲的影响,并对其工艺参数进行优化。
[Abstract]:The rapid thermal cycle injection molding technology is one of the new green injection molding technologies which has attracted much attention. It is different from the conventional injection molding technology. Rapid thermal cycle injection molding technology is a kind of injection molding technology when the surface temperature of mold cavity is slightly higher than the glass transition temperature of molding resin. In order to improve the surface quality of plastic products and avoid the secondary processing process, the rapid cooling of the products is realized after the high temperature maintenance. In order to reduce the harm to the environment and operators, the technology of rapid thermal cycle injection molding is expounded, the technology of rapid thermal circulation injection molding is explored, and the experimental results are discussed. The results show that in the rapid thermal cycle injection molding, the influence of each process parameter on the melt fluidity is as follows:. Cavity surface temperature cavity height injection velocity melt temperature. The basic situation of a car interior decoration product is briefly introduced. This paper analyzes the design flow of the rapid heat circulation mould for a certain automobile interior decoration product, and designs the rapid heat circulation mould for it. Related experiments were designed to verify it, and the test materials and blow molding parameters, mold response evaluation were described in detail. The mathematical models of filling process and warping process of injection molding are established, and the Moldflow software and the numerical analysis flow based on Moldflow are introduced briefly. The numerical analysis of an automobile interior decoration product was carried out, including Moldflow pretreatment, the establishment of hot runner gating system, the setting up of analysis type and process parameters, and the numerical analysis. The orthogonal experiment is designed. The effect of process parameters on warpage was analyzed and optimized.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ320.662;U463.839.2

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