叶轮注塑成型工艺及模具设计说明书.docx

毕业设计（论文） 题 目： 叶轮注塑成型工艺及模具设计 学 生： 指导教师： 学 院： 专 业： 班 级： 学 号： 2020年5月 PAGE PAGE 2 PAGE IV PAGE IV 叶轮注塑成型工艺及模具设计 摘 要 通过对叶轮进行结构及注塑成型工艺分析，设计出一套适合该产品的注射成型模具。首先概述了注塑模具的发展趋势和本次课题研究的内容及意义，其次通过对叶轮的外形结构与POM塑料的使用性能进行分析，最后对模具结构所需的尺寸、结构进行计算与校正。由于叶轮产品外形对称、尺寸较小、外表面结构简单，模具采用一模四腔结构，浇注系统采用侧浇口方式进浇，推出机构采用推杆推出机构完成制件的推出，成型零件选用整体式结构提高牢固性。分型面的位置可利用UG软件分析其面斜率确定，模架需根据CAD软件绘制出叶轮二维图形并加以测量来确定。通过模具结构的分析计算和相关说明以及注射机型号、注射压力和注射量等工艺参数计算校核，结果表明，此次设计模具结构合理。此外，本文还利用Moldflow软件来对叶轮注射成型过程进行模拟分析，根据所得结果优化模具的结构设计。 关键词：叶轮；注塑模具；分型面；脱模机构 Injection Molding Technology and Mold Design of Impeller Abstract Through the analysis of impeller structure and injection molding process, a set of injection molding mould suitable for the product was designed. Firstly, the development trend of injection mold and the content and significance of this research topic are summarized. Secondly, the profile structure of impeller and the performance of POM plastic are analyzed. Finally, the dimension and structure required by the mold structure are calculated and corrected. Due to the symmetrical shape, small size and simple external surface structure of the impeller products, the mold adopts a one-mold four-chamber structure, the casting system adopts side gate method, the pushing mechanism adopts push rod pushing mechanism to complete the launching of the parts, and the forming parts use the integral structure to improve the firmness. The position of the parting face can be determined by using UG software to analyze its slope, and the die frame needs to draw a two-dimensional figure of the impeller according to the CAD software and measure it. Through the analysis and calculation of the mold structure and related instructions, as well as the calculation and verification of the injection model number, injection pressure, injection volume and other process parameters, the results show that the design of the mold structure is reasonable. In addition, the software Moldflow was used to simulate