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塑料圆罩成型工艺与模具设计 摘要 本设计题目为塑料圆罩成型工艺与模具设计，来源于书籍，体现了典型塑料模的设计要求、内容及方向，有一定的设计意义。通过对该零件模具的设计，进一步加强了设计者塑料模设计的基础知识，为设计更复杂的塑料模具做好了铺垫和吸取了更深刻的经验。 本设计运用塑料成型工艺及模具设计的基础知识，首先分析了塑件的成分及性能要求，为选取浇口的类型做好了准备；然后估算了塑件的体积，便于选取注塑机及确定型腔数量；其次看是否需要侧抽，如需要，选择合适的侧抽机构，确定其工作原理；最后分析了塑件的特征，确定模具的设计参数、设计要点及推出装置的选龋 关键词：注塑模浇口 Plastic moldi
ng process a
nd die desig
n of protective cover Abstract: This desig
n topic is cover plastic moldi
ng process a
nd mold desig
n protectio
n,from books,reflects the typical plastic mould desig
n requireme
nts,co
nte
nt a
nd directio
n,the desig
n of a certai
n sig
nifica
nce.Through the desig
n of the die parts,further stre
ngthe
n the desig
ners of basic k
nowledge of plastic mold desig
n,pavi
ng thewaya
nd drawa more profou
nd experie
nce for the plastic mold desig
n more complex. This desig
n usi
ng the basic k
nowledge of plastic moldi
ng process a
nd mold desig
n,first a
nalyzes the compositio
n a
nd performa
nce of the plastic parts,readyto select the type of gate; plastic parts a
nd estimated thevolume,to select the i
njectio
n moldi
ng machi
ne a
nd determi
ne the
number of cavities; seco
ndlywhether
need to side,if
necessary,select the appropriate the side core pulli
ng mecha
nism,itsworki
ng pri
nciple is determi
ned; fi
nallya
nalyses the characteristics of plastic parts,determi
natio
n of desig
n parameters,die desig
n a
nd the i
ntroductio
n of the selected devices. Keywords: gate side 目录 1.绪论...........................................................1 1.1塑料制品和注射成形在模具业的重要地位............................1 1.2模具在我国的发展历程............................................1 1.3前景展望........................................................2 2塑料制件的分析....................................................3 2.1成型塑料件的工艺分析............................................3 2.2成型塑件的材料分析..............................................5 3塑件成型的基本过程................................................6 3.1塑件成型的基本过程..............................................6 3.2分型面的选择....................................................7 4注塑设备的选择....................................................8 4.1估算塑件体积质量................................................8 4.2注塑机的选择....................................................8 5成型零件有关尺寸的计算............................................9 6模具各系统的设计.................................................15 6.1浇注系统的设计.................................................15 6.1.1浇口套的选用.................................................15 6.1.2交口位置的选择...............................................16 6.2合模导向机构的设计.............................................17 6.2.1导柱的设计...................................................17 6.2.2导套的设计...................................................18 6.3.脱模结构的设计.................................................19 6.4排气系统.......................................................20 6.5冷却系统.......................................................21 6.6绘制装配图及定制零件明细表.....................................22 7注塑机的校核.....................................................26 7.1注射量的校核...................................................26 7.2锁模力的校核...................................................26 7.3磨具厚度的校核.................................................26 7.4开模行程校核...................................................27 结论...........................................................28 致谢...........................................................29 参考文献...........................................................30