机械5

灭火器注塑模设计 摘要 系统介绍了塑件的成形工艺及模具成型结构对塑件质量的影响分析，浇注系统的设计，模具成型部分和总装结构的设计。介绍了灭火器注塑模具设计时要注意的要点，并较多的考虑了模具结构的调整性、易更换性及模具成本。从控制制件尺寸精度出发，对灭火器注塑模的各主要尺寸进行了理论计算，以确定各工作零件的尺寸，从模具设计到零部件的加工工艺以及装配工艺等进行详细的阐述，并应用CAD进行各重要零件的设计。 关键词：模具设计；塑件成型；工艺性分析；浇注系统 Abstract The moldi
ng process of plastic parts,the effect a
nalysis to plastic parts qualitycaused bymoldi
ng structure,aswell as the casti
ng system desig
n,partial a
nd ge
neral desig
n of mold mouldi
ng i
ntroduced respectively.The critical poi
nts of mold for plastic desig
n are i
ntroduced,a
nd the adjustable character of moldi
ng structure、excha
nge character aswell as the moldi
ng costs are all co
nsidered farther.Starti
ng from co
ntrolli
ng dime
nsio
nal accuracy,the theoretical calculatio
n to the mai
n dime
nsio
ns of i
njectio
n moldi
ng are carried out so as to determi
ne the size of differe
nt parts,the moldi
ng desig
n a
nd the process of parts aswell as assembli
ng process a
nd etc of i
njectio
n moldi
ng are stated i
n details. Keywords: mold desig
n; plastic parts mouldi
ng; process a
nalysis; casti
ng system; 目录 绪论………………………………………………………………………………1 第1章模塑工艺规程的编制……………………………………………………3 1.1塑件的工艺性分析…………………………………………………3 1.2计算塑件的体积和质量……………………………………………4 1.3塑件注塑工艺参数的确定……………………………………………4 第2章注塑模的结构设计………………………………………………………5 2.1分型面的选择…………………………………………………………5 2.2确定型腔的排列方式…………………………………………………5 2.3浇注系统设计…………………………………………………………6 2.4抽芯机构设计…………………………………………………………6 2.5成型零件结构设计…………………………………………………8 第3章模具设计的有关计算………………………………………………………9 3.1型腔和型芯工作尺寸计算……………………………………………9 3.2型腔板的三维尺寸确定………………………………………………11 第4章模具加热及冷却系统的计算………………………………………………13 第5章模具闭合高度及注塑机有关参数的校核………………………………14 5.1模具闭合高度……………………………………………………………14 5.2注塑机有关参数的校核…………………………………………………14 第6章模具的装配、试模与维修…………………………………………………15 6.1装配……………………………………………………………………15 6.2试模……………………………………………………………………15 6.3模具的维修……………………………………………………………16 第7章主要零件加工工艺规程的编制……………………………………………17 第8章结论…………………………………………………………………………19 致谢…………………………………………………………………………………20 参考文献………………………………………………………………………………21