糖果盒盖注塑模盒盖塑件图技术要求:1.塑件材料PE2.未标注公差尺寸按SJ1372-78.8级。3．大批量生产。摘要本文是关于盒盖注塑模具的设计，在正确分析塑件工艺特点和PE材料的性能的后，采用了点浇口进行浇注。详细介绍了对凸模，凹模，浇注系统，脱模机构，选择标准零件，设计非标件的设计过程。涉及模具结构、强度、寿命计算及熔融塑料在模具中流动预测等复杂的工程运算问题；运用CAD、辅助工程UG等不同的软件分别对模具的设计、制造和产品质量进行分析。综合运用了专业基础、专业课知识设计，其核心知识是塑料成型模具、材料成型技术基础、机械设计、塑料成型工艺、模具CAD\CAM、Moldflow等。关键词：点浇口；盒盖注塑模设计；塑料成型模具AbstractThisarticleisaboutthedesignoftheboxcoverinjectionmold,inthecorrectanalysisoftheplasticpartsprocesscharacteristicsandPEmaterialproperties,usingthepointgateforpouring.Thedesignprocessofpunch,die,castingsystem,demouldingmechanism,selectionofstandardpartsanddesignofnon-standardpartsisintroducedindetail.Itinvolvescomplexengineeringcalculationproblemssuchasmoldstructure,strength,lifecalculationandflowpredictionofmoltenplasticinmold.Differentsoftware,suchasCADandUG,areusedtoanalyzethedesign,manufactureandproductqualityofmolds.Integrateduseofprofessionalbasis,professionalcourseknowledgedesign,itscoreknowledgeisplasticmoldingmold,materialmoldingtechnologyfoundation,mechanicaldesign,plasticmoldingprocess,moldCAD\CAM,Moldflowandsoon.Keywords:pointgate;Designofinjectionmoldforboxcover;Plasticmold目录摘要.............................................................I第一章塑料制件的工艺性分析........................41.1塑件原材料的分析....................................41.1.1HDPE加工性能........................................51.2成型塑料制结构工艺性............................6第二章注射工艺分析及塑料模的结构设计.....112.1零件的三维建模......................................112.2浇口位置.................................................112.3分型面....................................................152.4型腔的数目与布局...................................162.5浇注方案的设计......................................162.5.4点浇口剪切速率的校核......................192.6型芯型腔结构的设计...............................212.7型腔的强度校核....................................222.7.1整体式矩形型腔侧壁和底板厚度的计算.232.7.2整体式圆形型腔侧壁和底板厚度的计算.242.8脱模机构的设计....................................262.9标准模架的选取....................................26第三章成型设备及工艺参数..........................283.1成型设备.................................................283.2注射机的工艺参数.................................303.3塑料注射模塑工艺...................................31第四章模具成型零件尺寸的确定...................324.1型芯型腔尺寸的计算...............................324.2脱模机构尺寸计算.................................33第五章注塑机有关参数的校核......................345.1最大注塑量校核......................................345.2开模行程的校核......................................345.3按注射机的额定锁模力进行校核..............355.4模具闭合高度的校核...............................356.1模具主要连接件选择或设计...................376.2模具主要定位件选择...............................376.3模具主要导向件选择或设计...................377.1模具温度对塑件成型的影响.....................387.2模具热平衡计算......................................387.2.1进入模腔的总热量.............................397....
