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1、塑料模具专业英语Thereforethedecisionconcerningthenumberofcavitiestobedetermineddependson:sizeoftheorder(numberofmoldedpartsinconnectionwithdeliverytime);shapeofthemoldedparts(size,qualityrequirements);Unit One MoldConstructions因此确定型腔数量的主要因素涉及以下几点:订单大小(制品数量及相关交货时间);制品形状(尺寸、质量要求);Thereforef:因此;因而;所以Concerning
2、kns:ni关于,因素Cavitieskviti型控母模Order订购;订货,汇票,汇单Deliverydilivri交付,交货Shapeeip形状;样子,外形injection-moldingmachine(clamping force, plasticizingandinjection capacity);moldcosts.Thereareseveralknownproceduresforcalculatingtheeconomicalnumberofcavities.Unfortunatelytheyaresovariedthatitisimpossibletocondensethem
3、.Unit One MoldConstructionsclampingforceklmp夹紧力,合模力Capacity kpsiti容量,容积Proceduresprsi:d程序;方法;步骤Unfortunately遗憾地;不幸地Condensekndens压缩;浓缩;使简洁,缩短注射机(合模力、可塑性、注射容量);模具费用。尽管已有多种计算经济型腔数目的方法,但这些计算方法多种多样,根本没法将它们提炼成为简便公式。Asanexample:Thetheoreticalmax.numberofcavitiesis:F1=Max.injectionvolumeofmachine(cm3)/Volu
4、meofmoldedparts,sprueandrunner(cm3)F2=Plasticizingcapacity(cm3/min)/Numberofshots/min(part,sprueandrunner(cm3) F2mustbeequaltoorsmallerthanF1.F1isthemaximumnumberofcavitiesattainable.Unit One MoldConstructionsplasticize pl stisaiz v.(使)成为可塑(使)成为可塑;(使)可塑(使)可塑injection capacity注射容量注射容量Theoretical iret
5、ikl理论的理论的 Sprue spru:注料口注料口;浇注口浇注口 例如:型腔的理论最大数目为:F1=注射机注射容量的最大值(cm3)/制件、注料口和流道体积(cm3)F2=注塑容量(cm3/min)/制造数量/min(制件、注料口和流道(cm3) F2必须小于等于F1,F1是可得到的型腔数目的最大值。Unit One MoldConstructions动模座板动模座板 顶料板顶料板(Ejector plate)顶料杆,出料杆顶料杆,出料杆注塑机顶杆注塑机顶杆导柱导柱/导套导套垫脚,模脚垫脚,模脚凸模板凸模板凹模板凹模板冷却水道冷却水道定位环定位环 主流道主流道主流道衬套主流道衬套 浇注系统
6、浇注系统静模座板静模座板导柱导柱 导套导套 动模垫板动模垫板Unit ThreeMoldConstructionsPassageTwoThree -plate Injection Molds2 2Three -plate injection moldsareinjectionmoldspossessingtwopartinglines,havingbeendesignedasdegatingmolds.Thismeansthatthesprueisseparatedfromthepartsinthemold.Attheconclusionofinjectionthemoldopensatthe
7、firstpartingline,whichcontainsthesprueandrunnerandseparatedthepinpoint gatefromthepart. 三板式注射模具三板式注射模具是是具有具有两个分型面的两个分型面的注射模具注射模具 ,这种模具带有,这种模具带有浇口浇口 也就是也就是直浇道直浇道在模型中和塑件相分离。在注射结束之后,模具沿第一层在模型中和塑件相分离。在注射结束之后,模具沿第一层分型面开模,其中包含了分型面开模,其中包含了注料口注料口、浇道浇道和塑件中分流的和塑件中分流的针孔型浇口针孔型浇口。 possessingpzes拥有,持有;具有;占有;Means
8、意味着;sprue;spru:直浇道;isseparated被分离;conclusionknklu:n结尾,结局Unit One MoldConstructions模具结构模具结构Onlywhenthesecondpartinglineopened,thepartwouldbereleased.Thereareseveralpossibilitiesforachievingthis.仅当沿第二层分型面开模时,仅当沿第二层分型面开模时,塑件塑件才脱离型芯。有多种才脱离型芯。有多种可能性可能性来来实现实现这种情况。这种情况。 wouldbereleasedrili:s放松,松开possibilit
9、y,psbiliti可能性Achievingti:v完成,实现Unit One MoldConstructions模具结构模具结构InFig.3-1,withshortstrokedistancesofplate2,compression spring4orspring washerscanbeinsertedbetweenplate1andplate2,whichpushplate2forward.Thestop3limitsthestroke.在图3-1中,模板2具有一个短小的行程距离,压缩弹簧4或弹簧垫圈可以插入模板1和模板2之间,推动模板2向前,而止动销3则可以限制模板2的行程。Fig
10、.3-1Springtype1plate;2pushplate;3stop;4compressionspringFig.figurefig的缩写图表;图解;插图strokestruk冲程,行程Unit One MoldConstructionsTheretention systemofplate1showninFig.3-2isoftenemployed.Dowel 2isprovidedwithanannular groove3intowhichtheball catch4ispushed.Anottooheavyplatecanbecarriedalongbytheresultantadh
11、esiveeffect.模具结构模具结构Fig.3-2Retentionsystem1plate;2dowel;3annulargroove;4ballcatch在图3-2中,模板1在滞留系统中也经常被使用。定位销2中有一个环形凹槽3可以使球掣4进入,一块不太厚的模板可以沿着黏合面而移动。retention system ritenn保留;保持Is employedimpli使用,利用;Dowel daul定位销nnular njul环状的,轮状的;有环纹的groove gru:v沟;槽 Resultantrizltnt组合的,合成的Adhesive dhi:siv粘的;粘着的;effecti
12、fekt效果,效力;作用;Unit ThreeMoldConstructionsTheplate2tobemovedinFig.3-3isconnectedtotheejector platesbyejector rods,whichinturnarefixedintheirbasicpositionbystrongspring3.Plate2iscarriedalonguntiltheejectorplatesarestoppedbyrunningagainsttheejectorbarofthemachine.图3-3中的模板2通过顶料杆和顶料板相连。顶料杆由强度很大的弹簧3依次固定在它们
13、的基本位置。模板2被移动直到顶料板由于撞上机器的推出杆而停止。Fig.3-3 Three-plate injection mold1plate1;2plate2;3spring;4ejectorrod;5ejectorbarisconnectedto通过.被连接bemovedin被搬入inturn依次,轮流iscarriedalong被移动;runningagainst撞上Unit ThreeMoldConstructions当一个完整的模型保持正常方式运行时,需注意推出杆5应设计得稍长点。Thenonlythecompletemoldbodykeepsmovingonintheusualma
14、nner.Caremustbetakenwiththisdesignthattheejectorbar5isslightlydelayed.ejectorbar推出杆delayed.1.延缓;使延期2.耽搁;延误Unit One MoldConstructionsTheymustnotberigidlyconnectedtotheejectorplate;otherwisetherewouldbeatendencyforthepartstobepushedbackintothecavitiesinplate2.Withthisdesignthestrokeofplate2canbearbitr
15、ary模具结构模具结构Moreover,whentheejectorrods4arehardenedandguidedinbushes,theseejectorrodscantakeoverthefunctionoftheguidepinsfittedonthefixedmoldhalf,顶料杆不能和顶料板刚性相连,否则塑件将会有被推回模板2型腔的可能。对于这种设计,模板2的行程可以是任意的。而且当顶料杆4被加固并且用轴套引导时,这些顶料杆可替代导向销的作用来与定模部分配合,Rigidlyrididli僵硬地;严厉地;严格地;固执地Otherwisewaiz否则tendencytendnsi倾
16、向;趋势Arbitrary:bi,trri随心所欲的,任意的Unit One MoldConstructionssothatthespacebetweenplates1and2isnotclutteredupwithprotruding rodsorsprings.Thiscanbeofadvantageifarathercomplicatedrunnersystemhastobedesigned.模具结构模具结构所以在模板1和模板2之间不能乱放伸出杆或弹簧。如果要设计一个非常复杂的浇道系统,这种方法具有优势。Clutter klt使凌乱;乱堆在,塞满(+up)Protruding prtru
17、:dvt伸出,突出Springs 弹簧Rather r:相当,颇,有点儿Complicated kmplikeitid复杂的Unit One MoldConstructions模具结构模具结构Fig.3-4showsamechanicaltypeofplatemovement.Althoughmoreelaborate,itisneverthelessthesafestway,particularlyiflarge,heavyplateshavetobemoved.Thelatch3,whichhooksoverplate1,movesthelatteralong.图3-4所示为平板运动的机械
18、形式。虽然这种形式更为精细,但这无疑是最安全的方法,特别是当大而重的平板需要被移动时。挂在模板1上的插销3沿着模板移动,Fig.3-4 Plate movement1plate;2pin;3latch;4guidestrip;5leafspring;6waterwayelaborateilbrit精细,精心制作的nevertheless,nevles仍然,不过,然而hookhuk钩住图3-4模板运动1模板;2销;3插销;4导轨;5片弹簧;6冷却水道Unit One MoldConstructions模具结构模具结构Themovementiscontinueduntilthepin 2inthe
19、hookisliftedbytheriseintheguidestrip4onwhichitruns.Thepinhastoescapeupward,therebyreleasingthehookfromtheplate2.Theplatenowpushesupagainstastop,which inthiscasehasbeenfittedtotheundersideoftheguidestripat6,andthemoldcancontinueopening.直到销被滑块抬起,销不得不向上移动,所以释放了模板1上的挂钩。这时模板反向止动销向上推,在这种情况下,止动销止动销已在6处与导轨的
20、下侧相配合,所以模具能一直打开。escapeiskeip逃跑;逃脱thereby因此,由此,从而guidestripstrip支板;导轨Unit One MoldConstructionsThehookispusheddownagainbytheleaf spring5.模具结构模具结构Fig.3-5illustratesatypicaldegatingtool.Contrarytotheusualmolddesign,thistoolhasanadditionalmoldpartinglineforthestar -shaped runner.然后,挂钩再一次被片弹簧5向下拉。图3-5所示为
21、一典型注塑模具。与通常的模具设计不同,在此模具中为星形流道设计了一个附加的模具分型线。illustratesilstreit(用图,实例等)说明,阐明(+with)Contrarykntrri相反的,对立的(+to)additionaldinl添加的;附加的;额外的Unit ThreeMoldConstructionsFig.3-5 Typical degating tool1sprue separating area;2latch;3sprue;4retainer pin; 5head of bolt;6sprue-stripping plate;7pin;8guide strip; 9wa
22、terway;10bolt;11main parting line;12ejector rod; 13stripper sleeve;14plate assembly;15mold cores图图3-5 典型注塑模具典型注塑模具1浇道分离面;2、10插销;3直浇道;4固定销;5、10插销头;6注料口分模板;7销;8导轨;9冷却水道;11主要分型线;12卸料杆;13分型(模)套;14模板装置;15模具型芯Unit One MoldConstructionsMoldconstructedonthisprincipleispreferablyemployedbecauseofthesimplicit
23、yofthegating technique.模具结构模具结构Butthereissomeconcernthatbulky runneroftendonotdropeasilybetweenthemoldpartinglines.Itisimportantthatasufficientlylargegapalwaysbeset.因为有简单的脉冲选通技术,所以用这种方法设计的模具更适于使用。但是需要注意的是,通常大浇道不易滴在分型线之间,所以大的间隙设计是非常重要的。Constructedknstrkt建造,构成,设计;principleprinspl原则;原理preferablyprefrbl
24、i更好地employed,emplii:使用concernkns:n使担心;使不安,要注意(about/for)bulky blki体积大的,庞大的;过大;sufficientlysfintli足够地,充分地Unit One MoldConstructionsAttheconclusionofinjectionthemoldfirstpartedat1inthesprue separating areawhenthemachineopens.模具结构模具结构Thecompletemoldblock,withtheexceptionofthefixedmoldhalf,isinterlocked
25、withinitselfbythelatch2.一个完整的动模部分,由其余的固定板通过插销2使它们连接在一起,当注射成型结束时,随着机器的打开,模具将首先在浇道分离面1处分型。句中短语“At the conclusion of”译为“当完结时”。conclusionknklu:n终结,结束Exceptioniksepn例外;Unit One MoldConstructionsAsthesprue3isheldcaptivebythe intheretainer pin4,thepartisseveredfromthesprue,whichstaysonthefixedhalf.Whentheh
26、eadofthebolt5catchesthesprue -strippingplate6,thisismovedforward,therebystrippingthespruefromtheretainingpin4.模具结构模具结构直浇道3被固定销4中的下陷所约束。塑件从直浇道被切断,直浇道继续停留在静模部分。当插销头5的销头到达注料口分模板6时,这次运动停止,从而直浇道从止动销4中脱模。Unit One MoldConstructions模具结构模具结构当一连串运作完成时,插销2中的销7在位置9处沿着导轨8到达倾斜面,强制抬起插销从而结束互锁。Whenthesequencehasbeen
27、completed,thepin7oflatch2hasarrivedattheinclined planeoftheguidestrip8inposition9,forciblyliftingthelatchandtherebyendingtheinterlock.Sequencesi:kwns连续;一连串inclinedinklaind倾斜的interlock.,intlk互锁Unit One MoldConstructionsTheheadofbolt10reachedtheplatesalongthefixedposition.Thecontinuingsequenceoftheope
28、ningmovementconsistsoftilemoldopeningatthemainpartingline11,therebycreatingthedrop-outopeningfortheejectedpart.模具结构模具结构插销10的销头沿着固定方向到达模板。继续进行的开模运动由塑料模型在主要分型面11处的开模组成,从而为塑件创造了脱落条件。Sequencesi:kwns连续动作;一连串动作consistsofknsist组成,构成Unit One MoldConstructionsAstheopeningsequencecontinues,theheadofejectorrod
29、12pushesagainsttheejectorofthemoldingmachineandstopstheplate assembly14aswellasthestripper sleeve13.模具结构模具结构Themold core15fittedintotheplateassembly14withdrawsfromthepart,andtheejectionprocessisconcluded.当开模动作继续进行时,顶料杆12的杆头推动模具的推出机构,使动模座板14和分型套13停止。装在凹模固定板14中的型芯15从塑件中退出,从而注射过程结束。aswellas还有”、“不但而且Unit One MoldConstructions谢谢观看!谢谢观看!模具结构模具结构结束语结束语谢谢大家聆听!谢谢大家聆听!32