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电话听筒盖的塑料模具设计论文[带图纸].doc

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电话听筒盖的塑料模具设计论文[带图纸].doc

本科毕业设计(论文)题目电话听筒盖的塑料模具设计系别机电信息系专业机械设计制造及其自动化班级姓名学号指导教师2013年5月I电话听筒盖的塑料模具设计摘要模具是工业生产中使用极为广泛的主要工艺装备,它是当代工业生产的重要手段和工艺发展方向,许多现代工业的发展和技术水平的提高,在很大程度上取决于模具工业的发展水平。本文介绍了注射模具的特点及发展趋势,叙述了电话机听筒注射模具设计与计算的详细过程,介绍了该塑件成型工艺、注射模具的结构特点与工作过程,阐述了在有斜滑杆抽芯的注射模设计中应注意的事项。采用此模具能够保证塑件尺寸外形以及表面要求,而且成本低、结构简单、开模容易、效率高,具有较强的实用性。关键词电话听筒注射模具抽芯IIThePlasticMoldDesignofTelephoneHandsetCoverAbstractMoldiswidelyusedinindustrialproductionthemaintechnologicalequipment,Itisanimportantmeansofmodernindustrialproductionandprocessdevelopmentdirection,Manymodernindustrialdevelopmentandtheimprovementofthetechnicallevels,Largelydependsonthedevelopmentofdieandmoldindustrylevel.Thecharacteristicsanddevelopmentsofinjectionmoldwillbeintroducedinthispaper.Thedesigningandcalculatingofinjectionmoldofmicrophonewillbestatedindetail.Theformingprocessoftheproductandthestructurecharacteristicsaswellasworkingprocessoftheinjectionmoldwillbeintroduced.Theattentionshouldbepaidinthedesignoftheinjectionmoldforthepartwithliftersalsowillbestated.Usingthismoldcanguaranteeplasticsdimensionappearanceandsurfacerequirements,Andlowcost,simplestructureandeasytoopenmold,highefficiency,withstrongpracticability.KeyWordsmicrophoneinjectionmoldcorepulling1目录1绪论.......................................................................................................11.1前言......................................................................................................................11.2塑料模具的特点..................................................................................................11.3塑料模具设计的发展概况..................................................................................21.4课题的研究方向..................................................................................................32塑件的材料选择及工艺分析..............................................................42.1塑件材料选择......................................................................................................42.2塑件工艺性..........................................................................................................42.3塑件的结构设计..................................................................................................52.4塑件尺寸及精度..................................................................................................62.5塑件表面粗糙度..................................................................................................72.7塑件的体积和质量..............................................................................................72.8塑件分型面的确定..............................................................................................73注射成型工艺方案及模具结构的分析和确定..................................83.1注射成型工艺过程分析......................................................................................83.2浇口种类的确定..................................................................................................83.3型腔数目的确定..................................................................................................93.4注射机的选择和校核..........................................................................................93.3.1注射量的校核...............................................................................................93.3.2工艺参数校核.............................................................................................103.3.3安装参数校核.............................................................................................104浇注系统的设计................................................................................124.1浇注系统的组成................................................................................................124.2浇注系统设计原则............................................................................................124.3流道系统的设计................................................................................................124.3.1主流道的设计.............................................................................................124.3.2分流道的设计.............................................................................................134.3.3浇口的设计.................................................................................................144.3.4冷料穴的设计.............................................................................................155成型零部件工作尺寸的计算............................................................165.1成型零部件结构设计........................................................................................165.2成型零部件的工作尺寸计算............................................................................1725.2.1型腔径向尺寸计算.....................................................................................175.2.2型腔的深度尺寸.........................................................................................185.2.3型芯的径向尺寸.........................................................................................185.2.4型芯的高度尺寸.........................................................................................185.2.5中心距尺寸计算.........................................................................................185.4模架的选用........................................................................................................195.4.1模具基本类型的确定.................................................................................195.4.2模架的选择.................................................................................................196脱模机构的设计................................................................................216.1脱模机构的选择................................................................................................216.2顶杆机构设计....................................................................................................216.3斜滑杆侧抽芯机构设计....................................................................................227注射模温度调节系统........................................................................237.1温度调节对塑件质量的影响............................................................................237.2冷却系统的设计规则........................................................................................237.3排气结构设计....................................................................................................248模具的材料........................................................................................258.1成型零件材料的选用........................................................................................258.2注射模用钢种....................................................................................................259模具装配图........................................................................................2610模具的可行性分析..........................................................................2810.1本模具的特点..................................................................................................2810.2市场前景与经济效益分析..............................................................................2811结论...................................................................................................29致谢...........................................................................................................30参考文献..................................................................................................31

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