堵头的注塑工艺分析及模具设计毕业设计说明书3

河南理工大学本科毕业设计说明书（论文）I摘要塑料在当今世界上无处不用，因此塑料模具有很大发展，特别是注塑模。由此可知，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。本课题主要是针对堵头的模具设计,通过对塑件进行工艺性分析和比较,最终设计出一副注塑模。该课题从产品结构工艺性及具体模具结构出发，对模具的浇注系统、模具成型部分的结构、顶出系统、冷却系统、注塑机的选择及有关参数的校核、都有详细的设计，通过整个设计过程表明该模具能够达到此塑件所要求的加工工艺。根据题目设计的主要任务是堵头的注塑工艺及模具设计。也就是设计一副注塑模具来生产堵头，以实现自动化提高产量。通过本设计，可以对注塑模具有一个较深的认识，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；通过画装配图、零件图，进一步系统深化CAD熟练程度，加深了对模具各个零件的认识。关键字:塑料模具，注射机，型腔，浇注系统河南理工大学本科毕业设计说明书（论文）IIABSTRACTPlasticiseverywhereintheworldtoday,sotheplasticmoldisagreatdevelopment,especiallyininjectionmolding.Therefore,researchtounderstandplasticinjectionmoldproductionprocessandimprovethequalityofproductshavegreatsignificance.Themainissueisthemolddesignfortheplug,throughthetechnologicalanalysisandthecomparisonoftheplasticpart,thefinaldesignofaninjectionmold.Theprocessfromtheproductstructureandthespecificstructureofthemold,thecastingmoldsystem,moldformingpartofthestructure,thetopoutofthesystem,coolingsystem,thechoiceofinjectionmoldingmachinesandrelatedparametersofthecheck,therearedetaileddesign.Throughtheentiredesignprocessthatthemoldcanachievetherequiredpiecesofplasticprocessingtechnology.Accordingtothetopicdesign'sprimarymissionistheinjectionmoldingprocessanddiedesignofplug.Plasticproductsisthedesignofaninjectionmoldtoproducetheplug,inordertorealizetheautomationofproduction.Throughthisdesign,wecanhaveadeeperunderstandingofinjectionmold,payattentiontothedetailsofthedesign,understandingthestructureandworkingprincipleofmold;throughthestudy,wecanbuildsimplepartslibrary,toimproveworkefficiency;wecanalsohavea河南理工大学本科毕业设计说明书（论文）IIIbetterunderstandtheCADsystemproficiencyandthevariouspartsofmoldbydrawingtheassemblydrawing.KeyWords:PlasticMold,InjectionMachine,MoldCavity,PouringSystem河南理工大学本科毕业设计说明书（论文）IV目录第一章概论...............................................................................................................11.1模具工业的地位.............................................................................................11.2塑料注射模具的现状及发展趋势..................................................................1第二章模塑工艺.......................................................................................................52.1塑料的原材料分析.........................................................................................62.2塑件的结构和尺寸精度及表面质量分析.....................................................72.3计算塑件的体积和重量.................................................................................72.4脱模斜度和壁厚圆角......................................................................................82.5模塑成型工艺.................................................................................................82.5.1热塑性材料的注射成形工艺过程......................................................82.5.2PE材料注射成形工艺参数.................................................................9第三章模塑成形设备.............................................................................................103.1注射机的分类及成形原理...........................................................................103.2注射机的选择...............................................................................................10第四章注射模设计.................................................................................................124.1分型面的设计...............................................................................................124.1.1分型面的选择....................................................................................124.1.2型腔的布置........................................................................................124.2浇注系统的设计...........................................................................................134.2.1主流道的设计....................................................................................144.2.2分流道的设计....................................................................................154.2.3浇口设计............................................................................................164.2.4冷料穴的设计....................................................................................184.3排气结构的设计...........................................................................................194.4脱模机构的设计...........................................................................................194.4.1脱模机构的设计原则.........................................................................194.4.2脱模力计算........................................................................................20河南理工大学本科毕业设计说明书（论文）V4.5成型零部件的设计.......................................................................................214.5.1成型零件的结构设计.........................................................................214.5.2成型零件工作尺寸的计算.................................................................214.5.3型腔壁厚的确定................................................................................234.6模架的选择...................................................................................................244.7模具闭合高度的确定.........................................................................