1、 摘 要 模具制造技术迅速发展，已成为现代制造技术的重要组成部分。 注射机在今天是普遍的，但在注射机上安装的模具有各种各样的，这些模具由于塑料制品的不同而各异，到底安装哪一种受到特定的尺寸限制，因而注射模具的设计随着塑料制品的不同而改变。 本设计首先分析了防尘罩塑件的工艺特点，介绍了防尘罩塑件注射成型模具设计要点及模具的工作过程。该模具采用一模六腔、成型过程的合模、加料、塑化、注塑、启模和顶出制品等全部成型操作均由注塑机自动完成，从而使注塑工艺容易全自动化和实现程序控制。并针对塑件的工艺特点及模具型腔的数目， 选择了注射机，确定模具分型面、完成了冷却系统、浇注系统、分型机构等的设计过程。 并用
2、 UG/AutoCAD 绘制了一套模具装配图和零件图。 如模具的 CAD/CAM 技术，模具的超精密加工技术。该模具具有结构紧凑，工作可靠，操作方便，生产效率高等特点。 关键词： 塑料；注射模具；设计 II Abstract The rapid development of mold manufacturing technology has become an important component of modern manufacturing technology part. Injection machine is common today, but installed on the i
3、njection mold a wide variety of these different molds and plastic products as varied, in the end to install the size of which are subject to specific restrictions, and thus with the injection mold design the change of different plastic products. The first analyzes the design of plastic parts of the
4、process characteristics dust cover, dust cover describes the design of plastic parts injection mold and die work process elements. The six-cavity mold with a mold, molding process mold, feeding, plastic, injection molding, mold and top out at Kai products, and all other operations by the injection m
5、olding machine automatically, so that the injection molding process fully automated and easy to implement process control. And plastic parts for the process characteristics and the number of mold cavity to select the injection machine, determine the mold parting surface, complete cooling system, inj
6、ection system, sub-type institutions such as the design process. And use UG / AutoCAD drawing a mold assembly and part drawings. If mold CAD / CAM technology, ultra-precision processing technology of mold. The mold has a compact, reliable, easy operation, high production efficiency. Key word: Plastic； Injects the mold； Design
