机械5

风扇叶的注塑成型工艺及模具设计 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，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。设计成型零部件以及设计合理的推出机构。对设计进行验证主要是对注射机的相关重要参数进行验证，包括模具闭合厚度、模具安装尺寸、模具开模行程、注射机的锁模力等。在校验合格后，进行成型零件加工工艺过程的制定，既要保证塑件的质量，又要兼顾经济性。最后则是模具的装配环节，包括制定装配步骤、明确注意事项等。 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；通过对AutoCAD的学习，可以建立较简单零件的零件库，从而有效的提高工作效率。 关键词：生产工艺；注射模；成型零件；装配；塑料模具；分型面 Abstract Plastic i
ndustry is grows
now o
ne of quickest i
ndustry classes i
n the world, but casts the mold is developme
nt quick type, therefore, the research casts the mold to u
ndersta
nd the plastic product the productio
n process a
nd improves the product quality to have the very big sig
nifica
nce. This desig
n i
ntroduced the i
njectio
n takes shape the basic pri
nciple, specially si
ngle is divided the profile to i
nject the mold the structure a
nd the pri
nciple of work, to cast the product to propose the basic pri
nciple of desig
n; I
ntroduced i
n detail the cold flow cha
n
nel i
njectio
n evil spirit mold pours the system, the temperature co
ntrol system a
nd goes agai
nst the system the desig
n process, a
nd has give
n the expla
natio
n to the mold i
nte
nsity request. Desig
n shaped parts，reaso
nable drawi
ng mecha
nism a
nd so o
n． The desig
n should be certificatio
n．Primarily related to the i
njectio
n machi
ne of importa
nt parameters for the certificatio
n i
ncludi
ng die close thick
ness sizes，the
name dista
nce，i
njectio
n machi
ne of the die draw force a
nd so o
n．After Qualified i
n check，the moldi
ng parts machi
ni
ng process desig
n must e
nsure that the quality of Supervisio
n taki
ng i
nto accou
nt the eco
nomy． Fi
nal assembly is part of the mold，which i
ncludi
ng the desig
n of assembly steps，clear proceedi
ng required atte
ntio
n．Through this desig
n, may to cast the mold to have a prelimi
nary u
ndersta
ndi
ng,
notes i
n the desig
n certai
n detail questio
n, u
ndersta
nds the mold structure a
nd the pri
nciple of work; Through to the PROGRAM study, may establish the simple compo
ne
nts the compo
ne
nts storehouse, thus effective e
nha
nceme
nt worki
ng efficie
ncy. Key Words: Ma
nufacture process， I
njectio
n mold，Shaped parts，The plastic mold Divides the profile 目录 摘要Ⅰ Abstract Ⅱ 第1章绪论1 1.1塑料模的概况1 1.2塑料模的常用类型2 1.3的主要研究目标及内容3 第2章风扇叶的成型工艺参数及成型条件4 2.1塑料风叶设计与分析4 2.2注射性能分析4 2.3材料选择6 第3章成型方案的确定8 3.1分型面的选择8 3.2型腔数目的确定及布置9 3.3浇注系统的设计10 第4章成型零件的设计与计算14 4.1概述14 4.2型腔的结构设计14 4.3型芯的结构设计14 4.3叶片成型设计15 第5章脱模导向机构设计17 5.1合模导向机构的设计17 5.2塑件脱模的机构设计18 5.3开模力和脱模力计算、推杆数目与直径的计算19 第5章模具温度控制系统的设计23 第6章注射机参数的校核24 总结26 致谢27 参考文献28