注塑机校核

注塑机校核华东理工大学王凯摘要本设计为机械类塑料模注射模具设计，分析塑胶件的形状特点、尺寸大小、尺寸标注方法、精度要求，分析塑胶件的生产批量分析产品成本。确定成型方案及模具型式。这是一款以聚氯乙烯为原材料的皮带轮模具设计，它所选用的塑料成型方法为注塑成型方式。该款皮带轮设计是在工程上用于固定三角皮带的标准件，所以设计时应注意遵照标准件的设计方式——在塑料件上不采用拔模角或拔模角为0°。在对于塑料的相关知识了解之后，根据零件图中给定零件的公差精度以及形状尺寸等并结合塑件材料选择成型方式为注塑。首先确定型腔分布为一模两腔型，根据制品的体积选择XS-ZY-250型注射机；根据制品材料的特性选择浇注方式设计成侧浇口形式。然后在计算成形零件尺寸后，设计材料的分型方式为斜导柱抽芯侧向分型机构。之后再设计推出机构。最后选择合适的模架，细化每个零部件之间的位置配合关系。最后进行校验，对斜导柱强度进行校验还有注塑机的注射量、注射压力、开合模行程、模具高度与注塑机的关系进行校验。综上所述，完成此设计。关键词：注塑注射模；XS-ZY-250注射机；聚氯乙烯(PVC)；侧向抽芯；一模两腔ABSTRACTThisdesigninjectsamoldingtooldesignforthemachineplasticsmold,theshapecharacteristics,sizeofanalyticalplasticpiecemarksamethod,accuracytorequest,theproductionbatchquantityoftheanalyticalplasticpieceanalyzeproductcost.TheassurancemodelsprojectandmoldingtoolABSttern.Thisisadesignofabelt-wheeldiewhichmadeofthepolyvinylchloride.Thesolutionofthebelt-wheelthatisplasticinjectionmold.Belt-wheelisthestandardworkusedinengineeringwhichfixtrigonal-strap,sowedesignitaccordingthestandard.Itshouldn’tusethedraft,ordesignthedraftis0°.Afterlearningsomeknowledgeofplastic,wechoosetheinjectordependontheshapeandthedimensionaltolerancesoftheworkpiece,choosetwocavitiesinonemold,chooseXS-ZY-250injectorbythevolumeoftheplasticworkpiece.Designtheshotmeansisdependontheplastic’scharacteristic,andadopttheedgegate.Calculatethesizeofthecoresandthecavity,thestructureofdrawingcoresusedobliquepostistobeadopted.Designtheejectorframeworkandchoosethestandardmoldbases.Thendesigntherelationshipoftheotherworkpieceinthewholemold.Validateisthelastthing.Validatetheguidepinsizeandtheshotcapacity,injectionpressure,opendaylightoftheinjector.Andtherelationofthemoldshutheightwiththeinjectorsize,Insummary，sothedesignisover.KeyWords：plasticinjectionmold；XS-ZY-250injector；PVC；obliquepostdrawingcores；twocavitiesinonemoldI目录1绪论............................................................................................................................11.1引言.....................................................................................................................12塑料材料简介及选用..................................................................................................22.1塑料本色及牌号................................................................................................22.2塑料的选用........................................................................................................23注塑机及选用..............................................................................................................33.1注塑机分类...............................................................................................................33.1.1按外型结构特征分类...........................................................................................33.1.2按塑化方式分类.....................................................................................53.2注塑机选用.........................................................................................................54模具设计......................................................................................................................64.1型腔选择.............................................................................................................64.2选取浇注系统.....................................................................................................74.2.1主流道设计.............................................................................................84.2.2浇口套的设计.........................................................................................84.2.3分流道设计.............................................................................................94.2.4浇口的设计.............................................................................................94.2.5冷料穴设计...........................................................................................114.3成形零部件的设计...........................................................................................114.3.1成形零件的结构设计...........................................................................114.3.2成形零件的计算...................................................................................114.4侧向分型与抽芯机构设计...............................................................................124.4.1抽芯距的确定.......................................................................................134.4.2抽芯力的确定.......................................................................................134.4.3斜导柱的确定.......................................................................................134.4.4滑块与滑槽设计...................................................................................144.5注射模结构零部件设计...................................................................................154.5.1合模导向机构.......................................................................................154.5.2设计推出脱模机构...............................................................................16II5注塑机校核................................................................................................................165.1注射量的校核..