门钩成型工艺及注射模设计+CAD图纸
时间:2017-05-11 22:00 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：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。本文讨论了应用UG、CAD微机辅助设计门钩注塑模具的设计方法。介绍了注射成型的基本原理特别是单分型面注射模具的结构与工作原理，对注塑产品提出了基本的设计原则；制品采用材料为PBT+GF20。注射成型是热塑性塑料成型的主要方法之一，可以一次成型形状复杂的精密塑件。本设计进行了门钩的注塑模设计，对零件结构进行了工艺分析。确定了分型面、浇注系统等，选择了注射机，计算了成型零部件的尺寸。采用侧浇口、利用直导柱导向、推杆顶件完成脱模。如此设计出的结构可确保模具工作运用可靠。最后对模具结构与注射机的匹配进行了校核。并用AUTOCAD绘制了一套模具装配图和零件图。通过本设计，可以对注塑模具有一个初步的认识，注意到设计中的某些细节问题，了解模具结构及工作原理。8428 关键词：注塑模；工艺分析；浇注系统；成型零部件。 Design of injection mold for forming process and the door hook Abstract: the plastic industry is one of the fastest growing in the world today, and the injection mold is one of the types of rapid development, therefore, study to understand plastic injection mold production process and improve the quality of products have great significance. This paper discusses the design method of using UG, CAD computer aided design of injection mold for the door hook. Describes the basic principle of injection molding especially the structure and working principle of single injection mold parting surface, put forward the basic design principles of injection molding products; products using materials for PBT+GF20. Injection molding is one of the main methods of thermoplastic plastic molding, molding can be a complex shape of precision plastic parts. The design of the injection mold design of the door hook, the structure of parts of the process analysis. The parting surface, gating system have been determined, the choice of injection machine, has calculated the formation spare part size. The side gate, using straight guide column, putting the pieces to complete the release. So the structure is designed to ensure reliable mould work. Matching the mold structure and the injection machine is checked. And a set of AUTOCAD drawing die assembly drawing and parts drawing. Through this design, can have a preliminary understanding of the injection mold, pay attention to the details of the design, the die structure and working principle of understanding. Keywords: injection mold; process analysis; gating system; forming parts. 目 录 1 前言 1 2 塑件分析及建模 2 2.1 塑件结构特点2 2.2 塑件选材 2 2.2.1 PBT+GF20材料特性 3 2.2.2 PBT+GF20成型性能 3 2.3塑件建模 4 3 选择成型设备5 3.1 最大注塑量5 3.2 注射压力 5 3.3 锁模力的计算5 3.4 开模行程 6 3.5 选择注塑机7 4 成型零部件设计8 4.1 型腔分型面设计8 4.2 型腔布局9 4.3 成型零件结构设计9 4.4 成型零件材料选择9 4.5 成型零件的尺寸计算 10 4.6 型腔壁厚计算 10 4.7 排气槽的设计12 5 导向与定位机构设计14 6 模架的选择16 7 浇注系统设计18 7.1 浇口形式及位置确定18 7.2 主流道的设计19 7.3 分流道的设计 20 8 脱模机构设计21 9 模具冷却系统设计23 (责任编辑：qin) |