皮帶輪注射模設(shè)計(jì)說(shuō)明書(shū)[帶圖紙].doc

本科生畢業(yè)設(shè)計(jì)（論文）設(shè)計(jì)（論文）題目皮帶輪注射模設(shè)計(jì)作者分院信息與機(jī)電工程分院專(zhuān)業(yè)班級(jí)指導(dǎo)教師（職稱）論文字?jǐn)?shù)論文完成時(shí)間2013年4月20日杭州師范大學(xué)錢(qián)江學(xué)院教學(xué)部制1皮帶輪注射模摘要：基于塑料皮帶輪的幾何形狀，材料性能、技術(shù)要求，完成塑料皮帶輪模具的設(shè)計(jì)工作，該模具是一套塑料注射模具。在設(shè)計(jì)過(guò)程中，我選擇斜導(dǎo)柱側(cè)分型機(jī)構(gòu)，而且把型腔設(shè)置在跟滑塊固定的側(cè)型芯上。其分型方式選擇多個(gè)分型面同時(shí)分形，來(lái)完成型腔與塑件的分型。這樣不僅使得該模具的結(jié)構(gòu)得到了一定的簡(jiǎn)化，而且降低了這個(gè)模具的加工成本。為了提高模具在實(shí)際生產(chǎn)中的生產(chǎn)效率，采用了一模兩腔的形式。在注射成型過(guò)程中，為了避免合模時(shí)滑塊可能產(chǎn)生滑移，導(dǎo)致無(wú)法保證制品精度以及減少斜導(dǎo)柱在生產(chǎn)過(guò)程中的受力情況以及受力后的變形，我設(shè)置了楔緊塊裝置。為了保證斜導(dǎo)柱伸出端能夠準(zhǔn)確可靠地插入滑塊端的斜孔中，要求滑塊在完成抽芯以后仍然停留在剛剛脫離斜導(dǎo)柱的位置，不能發(fā)生任何的偏移，否則合模時(shí)斜導(dǎo)柱不能準(zhǔn)確地進(jìn)入滑塊斜孔，因此設(shè)置了限位板對(duì)滑塊進(jìn)行定位。另外，合模完成后，為了避免兩個(gè)滑塊的位置發(fā)生左右偏移，導(dǎo)致型腔結(jié)構(gòu)尺寸受到影響，必須在滑塊合模終端位置設(shè)置定位機(jī)構(gòu)，以保障兩個(gè)滑塊的位置不會(huì)發(fā)生不必要的偏移。此外還完成了該模具一些主要零件的加工工藝規(guī)程的編制工作。關(guān)鍵詞：皮帶輪；模具；一模兩腔；抽芯；注射模；2ApulleyinjectionmoldandmoldingprocessdesignMechanicalDesign,ManufacturingandAutomationclass091QiuxiabingInstructor:JiangjiefengAbstract:Basedontotheplasticbeltpulleysgeometricalshape,thespecificationandthematerialperformancesanalysis,hascompletedtheplasticbeltpulleysmoldprojectwork,andthismoldisasetofplasticinjectionmold.Intheprojectengineering,hasusedaslantingguidepillarsideminuteorganization,moreoverthediespaceestablishes,infixeswiththeslideonthetogethersidecore.Itsminutewayhasusedatthesametimemanyminuteprofilesfractal,thencompletedthediespacewithtomodelaminute.Thisnotonlyenabledthemoldstructuretoobtainthesimplification,moreoveralsoreducedthismoldsprocessingcost.Inordertoraisemoldsinactualproductionefficiency,hasusedmoldtwocavityforms.Inthegoodsinprocessinjectionmoldingprocess,foravoidswhenthematchedmoldstheslidehastheslipping,isunabletoguaranteethattheproductprecisionaswellasreducestheslantingguidepillaraftertheworkprocessstresssituationandthestressdistortion,mustestablishwedgestightlytheblockequipment.Inordertoguaranteethattheslantingguidepillarextendstheterminaltoentertheslideendreliablyaccuratelytheslantinghole,therequestslideaftercompletingpulledoutthecorepausesjustwasbeingseparatedfromtheslantingguidepillartheposition,couldnothaveanydisplacement,whenmatchedmoldstheslantingguidepillarcouldnotinserttheslideslantingholeaccurately,thereforeestablishedthespacingtabletcoupletslidetocarryonthelocalization.Moreover,afterthematchedmoldscompletes,abouttopreventtwoslidepositionstooccurdisplaces,causesthediespacestructuresizetoreceivethedestruction,mustintheslidematchedmoldsfinallypositionestablishmentdetentmechanism.Inadditionhasalsocompletedthismoldsomemajorpartsprocessingtechnologicalprocessestablishmentwork.Keywords：Beltpulley；Mold；Thesidepullsoutthecore；Amoldtwocavity；injectionmouldI目錄1引言.-1-1.1塑料及塑料工業(yè)發(fā)展.-1-1.2塑料工業(yè)在國(guó)民經(jīng)濟(jì)中的作用.-1-1.3模具工業(yè)在國(guó)民經(jīng)濟(jì)中的重要性.-1-1.4本模具的總體說(shuō)明.-2-2塑料材料及塑件幾何形狀.-2-2.1塑料材料的簡(jiǎn)介.-2-2.2分析塑件的結(jié)構(gòu)、尺寸精度及表面質(zhì)量.-3-3注射機(jī)的選用.-4-3.1計(jì)算制品的體積和質(zhì)量.-4-3.2初步選定注射機(jī).-4-4確定型腔數(shù)及位置布局方案.-6-4.1型腔數(shù)的確定.-6-4.2型腔布局方案.-6-5確定模具結(jié)構(gòu)方案.-7-5.1確定分型面.-7-5.2確定模架組合形式.-7-5.3.1主流道設(shè)計(jì).-9-5.3.2主流道襯套的設(shè)計(jì).-10-5.3.3分流道設(shè)計(jì).-10-5.3.4.澆口的設(shè)計(jì).-11-5.3.5.冷料穴的設(shè)計(jì).-12-5.4成形零部件的設(shè)計(jì).-12-5.4.1.確定成形零部件工作尺寸.-12-5.4.2.側(cè)向分型與抽芯機(jī)構(gòu)設(shè)計(jì).-13-II5.4.3.排氣系統(tǒng)的設(shè)計(jì).-16-5.5注射模結(jié)構(gòu)零部件設(shè)計(jì).-17-5.5.1.合模導(dǎo)向機(jī)構(gòu).-17-5.5.2.設(shè)計(jì)推出脫模機(jī)構(gòu).-17-5.6推出零件的設(shè)計(jì).-18-5.7復(fù)位機(jī)構(gòu)的設(shè)計(jì).-18-5.8脫