摘要
该文主要设计的是带内螺纹的饮水杯瓶盖的注塑模设计，通过对塑件进行工艺分析来绘出整体的装配图和部分零件图。对于塑件来说首先要确定的是其材料，再通过材料来分析它的工艺性，之后确定注塑机并对其分型面，浇注系统，冷料穴和脱模装置，顶出机构进行一个研究和选择。瓶盖是选择了通过侧面浇注来进行浇注，并采用了旋转自动脱螺纹的脱模机构。体现了较高的自动化程度。杯盖是作为大批量生产的，所以可采用一模多腔的设计方法，从而降低了生产成本提高了生产效率。
 
关键词 内螺纹杯盖；注塑模模具；模具设计
 
Abstract
The main design of this paper is the injection mold design of the bottle cap with internal thread, and the whole assembly drawing and parts drawing are drawn by the process analysis of the plastic parts. For plastic parts, the first is to determine its material, and then through the material analysis technology of it, then determine the injection molding machine and the parting surface, gating system, device, slag hole and stripping out institutions, when conducting a research and choice. The bottle cap is selected to be poured through the side casting, and adopts the rotary automatic stripping mechanism. It reflects the high degree of automation. The lid is used as a mass production, so a multi-cavity design method can be adopted to reduce the production cost and improve the production efficiency.
 
Keywords  internal thread cup cover  injection mold  mold design