塑料阀体注塑模设计

机械论文编号:JX682  论文字数:16854.页数:39 附任务书,开题报告,外文翻译,答辩PPT,CAD图纸
目  录
1前言 1
1.1蓬勃发展的模具工业 1
1.2塑料模具工业的现状和技术的主要发展方向 1
2 塑件的成形工艺性分析 4
2.1 塑件材料的选择及其结构分析 4
2.2 ABS的注射成型工艺 5
2.3 ABS性能分析 6
2.4 ABS成型塑件的主要缺陷及消除措施 7
3 确定模具基本结构 8
3.1 确定分型面 8
3.2 确定型腔数量及排列方式 10
3.3 模具结构形式的确定 10
4 注塑机的选择和有关工艺参数的校核 12
4.1 所需注射量的计算 12
4.2 注射机型号的确定 12
4.3 注射机的校核 13
5 浇注系统设计 16
5.1 主流道的设计 16
5.2 冷料穴的设计 18
5.3 分流道的设计 18
5.4 浇口的设计 18
6 温度调节系统设计 21
7 脱模机构设计 23
7.1 脱模阻力计算 23
7.2 主要推出零件的设计 24
8 成型零部件设计 25
8.1 成型零件的选材 25
8.2 凹模部分的结构设计 26
8.3 凸模部分的结构设计 28
9 导向与定位机构设计 30
9.1机构的功用 30
9.2导向结构的总体设计 30
9.3导柱的设计 31
9.4导套的设计 31
9.5导柱与导套的配合形式 32
10 设计总结 33
参考文献 34
致  谢 35
附  录 36

【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。
 本设计介绍了注射成型的基本原理，特别是双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；详细介绍了冷流道注射模具浇注系统、温度调节系统和顶出系统的设计过程，并对模具强度要求做了说明；根据分流阀的结构特点，介绍了分流阀注射模的主要结构，该结构解决了外螺纹侧向抽芯与塑件上小孔的4个方向抽芯问题，并就模具浇注系统的偏心问题的解决方法进行了说明。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。
 【关键词】塑料模具；分型面；标准；分流阀；侧向抽芯；浇注系统；二次顶出

The plastic injection mold design of the plastic valve body
 
 [Abstract] Now the plastics industry is one of the growing quickest industry classes in the world, but the injection mold is develops the quick type. Therefore, there have biggest significance to research injection mold to understand that the plastic of production process and improve the product quality.
 This design introduced the basic principle of injection molding, specially double is divided the profile to inject molds structure and the principle of work, That proposes the basic design principle of products; Introduced the details of the system that are cold flow channel injection of mold gating、the temperature control system and the design process of going against system, and has given the explanation to the mold intensity request; The main structure of the injection mould for the difference valve of the cold and hot water machine was introduced according to the structure characteristics of the valve. The mould structure solved the problem of pulling the outer. Threaded side core and the cores for the small holes of the plastic part at four directions. And the solution to the eccentric problem of the feeding system of the mould was explained. Through this design, May to cast the mold to have a preliminary understanding, notes some certain detail questions in design, understands the mold structure and the principle of working.

 [Key Words] The plastic Mold     Parting Line   Standard     difference valve side core-pulling   feeding system   two-time ejection