订书机外壳注射模设计

吉林化工学院本科毕业设计说明书订书机外壳注射模设计InjectionMoldDesignForTheShellOfStaple性质:□√毕业设计□毕业论文教学院：机电工程学院系别：机械电子系学生学号：11410521学生姓名：胡艾专业班级：机自1105指导教师：孔繁星职称：讲师起止日期：2015.3.1～2015.6.19吉林化工学院JilinInstituteofChemicalTechnology吉林化工学院本科毕业设计说明书-I-摘要本毕业设计说明书详细介绍订书机外壳塑件的注射模设计。主要内容是材料(聚丙稀PP)特性分析，塑料注射模的结构设计、标准件的选择、模具材料选择、典型零件的数控加工3G程序代码编程设计。该塑件外表面要求达到境面，内部有弯曲的加强肋，底部进行文字加工，不但有外侧抽芯成型两个圆柱孔、两个半圆柱孔及圆柱孔旁边的浅孔，还有内侧抽芯成型内部四个突台。外侧抽芯距离短，模架小，在型腔板上固定弯销来实现侧抽芯。由于塑件中部有两不易成型的圆肋，采用了增加两个小型芯镶件的办法减少加工模具的难度。整体外形为曲面，不能用传统的加工工艺，而是在Pro/E建模的基础上电火花成型。关键词：订书机外壳；注射模设计；侧抽芯；曲面胡艾：订书机外壳注射模设计-II-AbstractThisgraduatedesigninstructionbookhasintroducedthedesignofthebookeweroutsideshellinjectingmoldingindetail.Itmainlycontainstheanalysisofpropertyofthematerial(polypropylenePP),thestructuraldesignofinjectionmold,theselectionofstandardizedpartandthematerialofinjectionmold,the3GcodeNCpartprogrammingfortypicalpart.Thesurfaceofthisplasticpartshouldbemirrorfinished.Theinsideofithasbendingreinforcingrib.Thebottomofitshouldbeworkedwithwords.Itnotonlyhastwocylindricalpore、twohalfcylindricalporeandshort-holebesidethecylindricalporethatshouldbeformedbyoutsideextractingpart,butalsohasfourlugformedbyinsideextractingpart.Thedistanceofextractingisshortandthemouldissmall,sofixingangleblockonthecavitydieistofinishoutsideextracting.Becausetheinsideoftheplasticparthastworoundribsthataredifficulttobeformed,twoinsertsareaddedtomakeiteasiertoformmold.Theintegralsurfaceiscamber.Itcan’tbeformedbyconventionaljoboperation,sosparkmachineisneededtoformitonthebasisofPro/Emoldingfoundation.KeyWords：booksewer;designofinjectionmold;outsideextracting;camber吉林化工学院本科毕业设计说明书-III-目录摘要............................................................................................................................................IAbstract..............................................................................................................................................II第1章绪论......................................................................................................................................1第2章塑件工艺分析.....................................................................................................................22.1塑件分析..........................................................................................................................22.2塑料材料的成型特性分析................................................................................................22.3脱模斜度............................................................................................................................22.4拟定模具的结构型式........................................................................................................32.4.1型腔数量的确定.....................................................................................................32.4.2模腔排列形式的确定.............................................................................................32.5注射机型号的确定............................................................................................................42.5.1注射量的计算..........................................................................................................42.5.2塑件和流道凝料在分型面上的投影面积及所需要的锁模力计算.................52.5.3选择注射机..............................................................................................................52.6注射机有关参数的校核...................................................................................................62.6.1锁模力的校核.......................................................................................................62.6.2型腔数目的校核.....................................................................................................62.6.3开模行程的校核..................................................................................................6第3章浇注系统的设计.................................................................................................................83.1主流道的设计..................................................................................................................83.2主流道衬套的设计............................................................................................................93.3分流道的设计..................................................................................................................93.4冷料穴的设计...............................................................................................................113.5浇口形式设计...............................................................................................................123.6分型面的设计...............................................................................................................133.7排气槽的设计...............................................................................................................13第4章成型零部件的设计和计算.............................................................................................154.1凹模的结构设计...........................................................................................................154.2凸模的结构设计..........................................