《模具专业英语》-Unit 2 Basic Mold Structure

DialogueMrLi:Hi,Tom!Howareyou!Tom:Fine,MrliMrLi:HaveyouheardthatanindustrialexhibitionwillbeheldnextweekinShanghai?Tom:Oh?Ihaven’tWhatisitabout?MrLi:ItseemstoshowthedevelopmentofdieTom:YouhavegivenmealotofhelpsinceIcametoChinaMrLi:MypleasureIfthereisanythingspecialyouwant,don’thesitatetoletmeknowTom:ThankyouI’dliketoknowifyouarefreenextMondaymorningtoarrangesomevisitsformeMrLi:IcantakeyoutotheIndustrialExhibitionifyoulikeTom:That’swonderful下一页返回DialogueMrLi:Therearevariousnewindustrialproductsondisplaysuchasdieandmold.Tom:Couldyoubemorespecificabouttheindustriesrelatedtodieandmold？

MrLi:WellTheexhibitionwillgiveyouaroughideaofthediesupplies上一页返回TextBasicMoldStructure1Two-plateMoldTwoplatemoldsaremoldswhosesprue,runners,gates,andcavitiesareallonthesamesideofthemoldasshowninFig2-1，dividedbythepartinglineintomovinghalfandfixedhalf.Theirfeaturesare：①Simplestructure,easytooperate,andsatisfactorytohavetheplasticparttodropofffreely②Minimaloperationalproblems，longlifespan，andshortenedmoldingcycle③Inexpensivemoldcost④Easiertochoosegateshapeandlocation⑤Otherthandirectgates，gatelocationislimitedtothesideoftheplasticpart,withcertainexceptions⑥Aftermolding，thereisaneedtocutoffthegatefromthepart下一页返回TextBasicMoldStructure

Fig2-2isthephotosoftwo-plateinjectionmoldwithonecavityforaplasticearrackofBluetoothproductwhichhasbeeninstalledonaplasticinjectionmoldingmachine2.ThreeplateMoldThree-platemoldisamoldwhichhasarunnerplateinbetweenmovinghalfandfixedhalfTherunnerexistsbetweentherunnerplateandthefixedhalfasshowninFig2-3.Thecavityislocatedinbetweentherunnerplateandmovinghalfofthemold.Pin-pointgatestypicallylocateatthemiddleoftheplasticpart,awayfromitsedge,satisfyingtheaestheticrequirementandeliminatingtheprocessforcuttingoffthegates.上一页下一页返回TextBasicMoldStructure

Fig2-4isthephotosofthree-plateinjectionmoldwithtwocavitiesforaplasticcoverofBluetoothproductwhichhasbeeninstalledonaplasticinjectionmoldingmachine上一页下一页返回TextBasicMoldStructureNewWordsandExpressionsstructuren结构,构造spruen注入口,熔渣runnern滑行装置,流道gaten门,进料口cavityn腔,型腔minimaladj最小的;极少injection/n注射,注塑aesthetic/adj1有关美的,美学的2雅致的上一页下一页返回TextBasicMoldStructureeliminatevt消除,除掉，除去featuren特征,特色manualadj用手的,手工的,手动的durableadj持久的,耐用的installvt安装,安顿submarinen潜艇,深陷式

上一页下一页返回TextBasicMoldStructurepin-pointgate点状口two-plate二板式longlifespan长寿命gateshape浇道形状earrack耳架directgate直接浇道Bluetooth蓝牙Threeplate三板式上一页返回SupplementaryReadingTypesofMold1AnglePinSideCore-pullingMoldStructure

Fig2-5illustratesamoldstructureadoptinganglepinsidecore-pullingmechanism,whichshowshowtodemoldthesideconcavestructureonthemoldingproducttobeusedasshellofakitchenware.Onesinglecavityisallowedforamoldwithamultiplicityofradialslides，suchasthemoldforsteamturbineblades.Thepartingofaslideoracavitycanalsobemadebymeansofcompressedairorahydrauliccylinder.Amechanicalclampingmechanismisusuallyusedtoavoidunnecessarydisplacementofthemold.下一页返回SupplementaryReadingTypesofMold2SlantedLifterSideCore-pullingMoldStructureAliftermoldsshowninFig2-6.Itconsistsofslantedslide2andlifter5,core-retainerplate4andmaincore3.Thelifter5isguidedbytheslantedholeonthemovinghalf.Afteropeningthemold，ejector-retainerplate8pushesthelifter5andejectorpin1,makingtheslide2andtheejectorpin1toejecttheplasticpartwhilepullingout.上一页下一页返回SupplementaryReadingTypesofMold

Fig2-7illustratestheroller-typeslantedlifterforexternalsidecore-pullingmechanism.Roller9isconnectedontoslantedlifter7withaxle8，whichmeansthattheslantedlifterisinrollingcontactwithejector-retainerplate10throughtheroller，andtheslidingfrictionisreplaced上一页下一页返回SupplementaryReadingTypesofMoldNewWordsandExpressionsanglen角,角度illustratevt1给……加插图2说明,阐明;表明mechanismn1机械装置2构造,机制demoldvt脱模concaveadj凹的n凹面,成凹形kitchenwaren厨房用clampvt&vi（用夹具）夹紧，夹住wedgen楔;楔形物；（击高尔夫的）楔形铁头球棒上一页下一页返回SupplementaryReadingTypesofMoldinjectionn注射;（液体）注入，喷入radialadj辐射状的;放射式的;星形的coren果核;核心;精retractvt&vi撤回或撤销;缩回,拉回prolongvt延长;拉长;拖延frictionn摩擦;摩擦力slantvt&vi(使)倾斜;歪斜axlen轮轴;车轴quenchingprocess冷却工序上一页下一页返回SupplementaryReadingTypesofMoldroller-type滚轮规格core-pulling抽芯力anglepin斜导柱moldedproduct成形制品movinghalfmold动模singlecavity单个模腔fixedhalfmold定模hydrauliccylinder液压缸上一页返回TranslationSkill(2)科技文章的特点Ⅰ大量使用名词化结构试观察下列各组句子：

Theearthrotatesonitsonlyaxis,whichcausesthechangefromdaytonightTherotationoftheearthonitsonlyaxiscausesthechangefromdaytonight

地球绕轴自传，引起昼夜的变化。名词化结构therotationoftheearthonitsonlyaxiscauses使复合句简化成简单句，而且使表达的概念更加准确严密。下一页返回TranslationSkill(2)科技文章的特点Ⅱ广泛使用被动语句据统计，科技英语中的谓语至少三分之一是被动语态。这是因为科技文章侧重叙事推理，强调客观准确。因此尽量使用第三人称叙述，采用被动语态。例如，Attentionmustbepaidtotheworkingtemperatureofthemachine应当注意机器的工作温度。而很少说：Youmustpayattentiontotheworkingtemperatureofthemachine你们必须注意机器的工作温度。上一页下一页返回TranslationSkill(2)科技文章的特点Ⅲ非限定动词科技文章要求行文简练，结构紧凑。为此，往往使用分词短语言代替定语从句或状语从句，使用分词独立结构代替状语从句或并列分句，使用不定式短语代替各种从句，使用“介词+动名词短语”代替定语从句或状语从句。这样既可以缩短句子，有比较醒目。上一页下一页返回TranslationSkill(2)科技文章的特点Ⅳ后置定语文字大量使用后置定语也是科技文章的特点之一，常见的结构有以下五种：1介词短语Theforcesduetofrictionarecalledfrictionalforces由于摩擦而产生的力为摩擦力。2形容词及形容词短语Inthisfactorytheonlyfuelavailableiscoal该厂唯一可利用的燃料是煤。上一页下一页返回TranslationSkill(2)科技文章的特点3副词Theairoutsidepressedthebucket’ssidein外面的空气将桶壁压得凹进去了。4保持较强的动词意义的单个分词Theresultsobtainedmustbechecked获得的结果必须加以校核。5定语从句Duringconstruction,problemsoftenarisewhichrequiredesignchanges在施工过程中，常常会出现需要改变设计的问题。上一页下一页返回TranslationSkill(2)科技文章的特点Ⅴ常用句型科技文章中使用若干特定的句型，从而形成科技文体区别于其他文体的标志。如It….that…..结构句型、被动语态结构