1、 I 摘摘 要要 塑料工业是当今世界上增长最快的工业门类之一，而注塑模具是其中发展较快的种 类，因此，研究注塑模具对了解塑料产品的生产过程和提高产品质量有很大意义。 本文首先讲述了塑料模具工业的发展现状。系统分析了直角弯头模具的结构特点及 塑件的几何结构与性能要求，介绍了该塑料注塑模具的结构、工作过程及制造特点，讲 述了斜导柱抽芯结构的设计要点。注射模的浇注系统一般分为普通流道浇注系统和无流 道浇注系统两大类。此次设计采用普通流道浇注系统，它的布局和尺寸决定了熔融塑料 在充模过程中经过浇注系统时的注射压力损失和热损失的大小。本文针对 RPVC 原材 料，设计了正确的浇口形状及合理的流线型通道，
2、在指出浇口尺寸重要性的基础上，设 计了一种结构简单的直浇口成型模具结构。 在此塑料注射成型模具的成型过程中，对直角弯头模具进行了工艺分析，详细介 绍了各成型工序的模具结构特点。 选择了合适的抽芯机构和顶推装置， 设计出准确可靠、 运动灵活、 结构简单的定顶出结构。 本次设计的核心是模具型腔， 即成型零部件的设计。 应用 CAD 技术设计开发模具，可以提高制图效率，缩短设计周期。 关键词：塑料，直角弯头，斜导柱，注塑模设计 II ABSTRACT plastic industry is in the world grows now one of quickest industry classes
3、, but casts the mold is development quick type, therefore, the research casts the mold to understand the plastic product the production process and improves the product quality to have the very big significance. The paper first describes the development of the plastic mold industry status . Bend a l
4、ittle cost analysis of the structural characteristics of molds on plastic injection mold of the structure and plastic parts geometry and performance requirements, process and manufacture of the characteristics of the oblique-slip on the design features of the core agencies. Injection Mold for the ca
5、sting systems are generally divided into the general flow channel gating system and non-flow channel get system two broad categories. The design uses a common flow channel gating system , which determines the layout and size of molten plastic in the process of filling after the injection casting sys
6、tem pressure loss and the size of heat loss. In this paper, RPVC materials, design the right gate of the streamline shape and reasonable access, pointing to the importance of gate size on the basis of a simple design mold gate structure. Plastic injection molding in the mold design process, carries out at little cost to bend mold process analysis, detailed process of the forming characteristics of the mold structure. Select the appropriate pulling mechanism and pushing device , design of accura
