1、 1 1 毕业论文（设计） 课题名称：课题名称： 塑料圆盖模具设计 2 摘摘 要要 注射成型是塑料成型的一种重要方法，它主要适用于热塑性塑料的成型，可以一次成型形状 复杂的精密塑件。本课题就是将塑料圆盖作为设计模型，将注射模具的相关知识作为依据，阐述 塑料注射模具的设计过程。 通过对塑料圆盖成型工艺的正确分析，设计了一副一模一腔的塑料模具。模具中决定塑件几 何形状和尺寸的零部件称为成型零件，包括前模板、前模仁、后模板、后模仁、后模镶件、斜导 柱、滑块等的设计与加工工艺过程。成型零部件在工作时直接与塑料接触，在一定的温度下承受 熔体的高温和高压，因此必须要有合理的结构、较高的强度和刚度、较好的耐
2、磨性、正确的几何 形状、较高的尺寸精度和较低的表面粗糙度。重要零件的工艺参数的选择与计算，推出机构与浇 注系统以及其它结构的设计过程。 设计成型零部件时，应根据塑料的特性、塑件的结构和使用要求，确定型腔的总体布局，选 择分型面，确定脱模方式，设计浇注系统、排溢系统等，然后根据加工工艺和装配工艺的要求进 行成型零部件的结构设计，计算成型零部件的工作尺寸，对关键的成型零部件进行强度和刚度校 核。 关键词：塑料模具；注射成型；模具设计； Abstract Injection molding is an important method of plastic molding, which is mai
3、nly applied to thermoplastic molding, can be a complex shape forming of precision plastic parts. The issue is the plastic dome as the design model, will injection mold-related knowledge as a basis to explain the process of plastic injection mold design. Plastic dome on the right molding process anal
4、ysis, design of a cavity of a mold of a plastic mold. Plastic Mould decided to geometric shape and size of the parts as molded parts, including the former template, before the mold, after the template, after the mold, after the mold inserts, Bevel Pillar, slider, etc. Design and Manufacture of proce
5、ss . Molding parts with plastic in direct contact with the work, at a certain temperature to withstand high temperature and high pressure melt, it must have a reasonable structure, high strength and rigidity, good wear resistance, the correct geometry , high dimensional accuracy and low surface roug
6、hness. Important part of the process parameter selection and count the bodies and the gating system and other structural design process. Design molding parts should be under the plastic properties of the structure and use of plastic parts required to determine the overall layout of the cavity, select sub-surface to determine the stripping method, designed gating system, overflow systems, scheduling, and then processing and assembly process requirements of forming components structural design,
