论文部分内容阅读
针对空调面框塑件表面容易产生缩痕等缺陷问题,首先根据空调面框的三维结构建立了三维模型,设立好浇道系统及冷却系统,并进行初步充填分析。研究了主要成型工艺参数与空调面框表面缩痕的影响规律,并针对熔体温度、模具温度、相对保压压力、注射时间4个参数与缩痕指数之间的关系建立了响应曲面模型,并构建以缩痕指数最小为目标的优化函数,得到了最小缩痕指数值和最佳工艺参数组合,最后对数据结果进行实验研究,验证了在该注塑工艺参数组合下,缩痕指数达到了预期目标,成型产品表面缩痕深度较小,满足工艺生产要求。这为框形薄壁复杂注塑件低成本高质量设计提供新的途径。
Aiming at the defects such as sink marks and so on, the surface of the plastic surface of the air conditioner faceplate first sets up a three-dimensional model according to the three-dimensional structure of the air conditioner faceplate, sets up the runner system and the cooling system, and carries out the initial filling analysis. The influence of the main molding parameters and the shrink marks on the surface of air conditioning face frame was studied. The response surface model was established according to the relationship between the four parameters of melt temperature, mold temperature, relative packing pressure and injection time, And an optimization function aiming at minimizing the indentation index is established. The minimum indentation index value and the optimal combination of process parameters are obtained. Finally, the experimental results of the data are validated. Under the combination of injection molding parameters, the indentation index reaches Expected goal, molding product surface shrinkage depth smaller, to meet the production requirements. This provides a new way for low-cost, high-quality design of thin-wall, box-shaped injection molded parts.