模具設計復習思考題含答案

1、BuildingindustryopensupnewwldofentrepreneurialstruggletobuildathreeprovincesofregionalcentralcitiesintheCommunistxcountiesthesixplenarysessionmemberscomrades:todayIwascommissionedbytheCountypartyCommitteeStingCommitteere

2、ptstotheGeneralAssembly.Considerationofallmembersalternatescomradesattendingadvice.AthisyearyilaiofwkrecalledthisyearyilaiinmunicipalofrightledXiaCountysolidarityledCountypeopletosciencedevelopmentviewsfguidetogoodactivi

3、tiesfmainlineaccdingto“acityfourmodernizationsthreeme“ofdevelopmentthoughtconcentratedpolyfcewkhardpoliticaleconomicculturesocialpartyofconstructionaremadehasnewprogressCountyrenderingoutwindfresharecareerprosperitysocia

4、lsettledpeoplemindintoofgoodsituation.(A)facilitatingtheconstructionoftheproject.Firmlyestablishthe“scratchprojectiseconomicgraspingdevelopmentprojectistohold“philosophytoextradinaryefftstopromotingtheconstructionofkeypr

5、ojects.Plot108keyprojectsftheyearwithatotalinvestmentof29.3billionyuanironplateJoshstonecementwasteheatpowergeneration13projectscompletedwshipof1.2milliontonsofpelletsHuaYu80000setsofgrparentchickenfarming47projectsunder

6、constructioncompletedinvestmentof3.95billionyuanannualplanof69.3%.ThefirsthalfoftheCountysgrossdomesticproductisexpectedtoreached8.5billionyuantotalrevenueof943millionYuan.(B)structuraladjustmentachievedremarkableresults

7、.Activelytransfmingthepatternofeconomicdevelopmentindustrialecologyagriculturalmodernizationindustrializationofservices.HighxCountyTinironcirculareconomydemonstrationareafurtherexpeconomicdevelopmentzoneJingDianrecycleec

8、onomyecologyindustryParkParkcirculareconomyrapideconomicdevelopment.Focusmeonthedialecticalrelationshipbetweendevelopmentenvironmentalprotectionenergysavingemissionreductionprojectsplayanimptantrole.Vigouslydevelopingagr

9、icultureecologicalagricultureagriculturemodernagriculturalclearingalongtheRiverPromenadebeginstotakeshape.KeytourismprojectsisgoingwellWAPalaceareawasnamed“toptenmostinfluentialculturalrelicsinHebeiprovincelscape“.Develo

10、pnewservicesserviceswithnewdevelopments.(C)urbanruralintegrationprocess.Promoting“threeyeardifference“campaignbattleoftwolargedemolitioncompleted32daysof530000squaremetersexceededtheannualTask7monthsinadvance.Generalbigb

11、uildingjiangjunroadbridgehighwaybridgesthegreenheartofthecityotherurbanconstructionprojectsfocusonbuildingnewcountrysidenewhousingmodelvillagesurbanruralareasimprove.HighwayopenedtotrafficLiuZhangQingLANhighspeedxCountys

12、ectioncompletedbytheendofAugust.Urbanruraldevelopmentwksteadilyinthepilotcountiestobuildpeaceneighbhoodofficesapproved“change“urbanruralcommunities(Center)immigrantcommunitiespilotprojectssuchasintegratedmanagementofurba

13、nruralsanitationinder.(D)maintainsocialharmonystability.Inthecaseoftightfinancialsituationcontinuetoincreasetheinputofpeoplehappypeoplebattle.Urbancentralheatingupgraderuralpowergridsruralreconstructionofshabbyhousingten

14、majprojectsbeingdeliveredhasbeenoverfulfilledahead.Strengtheningofsocialprogramscollegeentranceexaminationtorecdheightsnewruralinsurancecoveragerateofthecitysfirstlaunchedinnewruralcooperativemedicalcliniccodination...Pe

15、rfectParkcateringaccommodationeducationrecreationothertertiaryindustriessupptingimprovingsocializationservicelevelfindustriesbusinessescreateagoodenvironmentfdevelopment.3flexibleinvestmentenhancetheindustry.Construction

16、ofindustrialparksjustsetupaplatfmfthedevelopmentofonlyattractmeprojectsintothedistricttofmagglomerationadvantages.Ainnovationproject.TobepurposefultargetedinvestmentwillhaveabasisoftheCountysindustrialpackagedbundlesover

17、allpublicitypromotion.Initiativegoingpleasecomeincarryoutallroundmultilevelwiderangeofinvestmentactivities.TheTownshipindustrialprojectsinprincipletoputtotheWestindustrialparks.WhattownprojectisthattheoutputvalueoftheTow

18、nship.Secondwemustgraspthestardseditems.Fullaccountofextendtheindustrychaintheintegrationoffactsofproductionnotonlyefftstointroduceanumberofscientifictechnologicalcontenthighaddedvaluegrowthstrongdrivingfceoflargeproject

19、slargeenterprisesbutalsoondomesticfundedenterprisesinaccdancewiththedirectionofindustrialdevelopmentofsmallmediumprojectsprojectmansmallprojectoverwhelming.MeettheareaoftheCountysnewindustrialprojectscitybackintoruralent

20、erprisesinprincipleallstationedinindustrialparks.Meanwhilestrictcontrolofexcesscapacityhighenergyconsumptionhighemissionenterprisestoenter.Thirdlyincreasedincentivesontheproject.InvestmentofthewholesocietytheTownshipCoun

21、tyunitsgooutdraftproject.Toestablishinvestmentincentivesfsuccessfulintroductionofsignificantprojectgivesawardstounitsindividualstheintroductionoftaxftheimplementationoftheprojecttointroduceganizationintorewards.4preferen

22、tialpoliciessecurityindustries.IntermsofprojectexaminationapprovalbyareaAdministrativeCommitteeinconjunctionwiththedevelopmentplanninglindustrycommercequalitycontrolotherdepartments“onestopreceptiononestopservice“thesimp

23、lifiedproceduresthetimelimitiginally.InthemanagementofEIAinaccdancewiththe20082008級課程復習思考題課程復習思考題201111151.塑料注射模主要由哪幾部分所組成？結構特點及開合模動作過程？P4748答：塑料注射模主要組成部分：（1）成型零部件：定、動模部分中組成的零件。（由凸模（或型芯）、凹模（型腔板）、鑲件等組成，合模時構成型腔，用于填充塑料熔體，它決

24、定塑件的形狀和尺寸。如動模板1，定模板2，型芯7）（2）澆注系統(tǒng)：熔融塑料從注塑機噴嘴進入模具型腔所流經(jīng)的通道它由主流道、分流道、澆口和冷料穴組成。（3）導向機構：為定模與動模之間的導向機構和推出機構的導向機構兩類。（前者是保證動模和定模在合模時準確對合，以保證塑件形狀和尺寸精確度，如導柱8和導套9；后者是保證推出過程中推出板順暢而設置的，如推板導柱16、推板導套17。）（4）脫模機構：又稱推出機構。（常見的有推桿推出機構、推板推出機構

25、和推管推出機構等。圖1中推板13、推桿固定板14、拉料桿15、推桿18和復位桿19組成推桿推出機構。）（5）側向分型與抽芯機構當塑件側向有凹凸形狀的孔或凸臺時，就需要有側向型芯來成型。使側向型芯移動的機構稱為側向分型抽芯機構。（6）加熱和冷卻系統(tǒng)為滿足注射工藝對模具的溫度要求，必須對模具溫度進行控制，所以模具常常設有冷卻系統(tǒng)或在模具內部或四周安裝加熱元件。冷卻系統(tǒng)一般在模具上開設冷卻水道，如冷卻水道3。（7）排氣系統(tǒng)Buildingin

26、dustryopensupnewwldofentrepreneurialstruggletobuildathreeprovincesofregionalcentralcitiesintheCommunistxcountiesthesixplenarysessionmemberscomrades:todayIwascommissionedbytheCountypartyCommitteeStingCommitteereptstotheGe

27、neralAssembly.Considerationofallmembersalternatescomradesattendingadvice.AthisyearyilaiofwkrecalledthisyearyilaiinmunicipalofrightledXiaCountysolidarityledCountypeopletosciencedevelopmentviewsfguidetogoodactivitiesfmainl

28、ineaccdingto“acityfourmodernizationsthreeme“ofdevelopmentthoughtconcentratedpolyfcewkhardpoliticaleconomicculturesocialpartyofconstructionaremadehasnewprogressCountyrenderingoutwindfresharecareerprosperitysocialsettledpe

29、oplemindintoofgoodsituation.(A)facilitatingtheconstructionoftheproject.Firmlyestablishthe“scratchprojectiseconomicgraspingdevelopmentprojectistohold“philosophytoextradinaryefftstopromotingtheconstructionofkeyprojects.Plo

30、t108keyprojectsftheyearwithatotalinvestmentof29.3billionyuanironplateJoshstonecementwasteheatpowergeneration13projectscompletedwshipof1.2milliontonsofpelletsHuaYu80000setsofgrparentchickenfarming47projectsunderconstructi

31、oncompletedinvestmentof3.95billionyuanannualplanof69.3%.ThefirsthalfoftheCountysgrossdomesticproductisexpectedtoreached8.5billionyuantotalrevenueof943millionYuan.(B)structuraladjustmentachievedremarkableresults.Activelyt

32、ransfmingthepatternofeconomicdevelopmentindustrialecologyagriculturalmodernizationindustrializationofservices.HighxCountyTinironcirculareconomydemonstrationareafurtherexpeconomicdevelopmentzoneJingDianrecycleeconomyecolo

33、gyindustryParkParkcirculareconomyrapideconomicdevelopment.Focusmeonthedialecticalrelationshipbetweendevelopmentenvironmentalprotectionenergysavingemissionreductionprojectsplayanimptantrole.Vigouslydevelopingagricultureec

34、ologicalagricultureagriculturemodernagriculturalclearingalongtheRiverPromenadebeginstotakeshape.KeytourismprojectsisgoingwellWAPalaceareawasnamed“toptenmostinfluentialculturalrelicsinHebeiprovincelscape“.Developnewservic

35、esserviceswithnewdevelopments.(C)urbanruralintegrationprocess.Promoting“threeyeardifference“campaignbattleoftwolargedemolitioncompleted32daysof530000squaremetersexceededtheannualTask7monthsinadvance.Generalbigbuildingjia

36、ngjunroadbridgehighwaybridgesthegreenheartofthecityotherurbanconstructionprojectsfocusonbuildingnewcountrysidenewhousingmodelvillagesurbanruralareasimprove.HighwayopenedtotrafficLiuZhangQingLANhighspeedxCountysectioncomp

37、letedbytheendofAugust.Urbanruraldevelopmentwksteadilyinthepilotcountiestobuildpeaceneighbhoodofficesapproved“change“urbanruralcommunities(Center)immigrantcommunitiespilotprojectssuchasintegratedmanagementofurbanruralsani

38、tationinder.(D)maintainsocialharmonystability.Inthecaseoftightfinancialsituationcontinuetoincreasetheinputofpeoplehappypeoplebattle.Urbancentralheatingupgraderuralpowergridsruralreconstructionofshabbyhousingtenmajproject

39、sbeingdeliveredhasbeenoverfulfilledahead.Strengtheningofsocialprogramscollegeentranceexaminationtorecdheightsnewruralinsurancecoveragerateofthecitysfirstlaunchedinnewruralcooperativemedicalcliniccodination...PerfectParkc

40、ateringaccommodationeducationrecreationothertertiaryindustriessupptingimprovingsocializationservicelevelfindustriesbusinessescreateagoodenvironmentfdevelopment.3flexibleinvestmentenhancetheindustry.Constructionofindustri

41、alparksjustsetupaplatfmfthedevelopmentofonlyattractmeprojectsintothedistricttofmagglomerationadvantages.Ainnovationproject.TobepurposefultargetedinvestmentwillhaveabasisoftheCountysindustrialpackagedbundlesoverallpublici

42、typromotion.Initiativegoingpleasecomeincarryoutallroundmultilevelwiderangeofinvestmentactivities.TheTownshipindustrialprojectsinprincipletoputtotheWestindustrialparks.WhattownprojectisthattheoutputvalueoftheTownship.Seco

43、ndwemustgraspthestardseditems.Fullaccountofextendtheindustrychaintheintegrationoffactsofproductionnotonlyefftstointroduceanumberofscientifictechnologicalcontenthighaddedvaluegrowthstrongdrivingfceoflargeprojectslargeente

44、rprisesbutalsoondomesticfundedenterprisesinaccdancewiththedirectionofindustrialdevelopmentofsmallmediumprojectsprojectmansmallprojectoverwhelming.MeettheareaoftheCountysnewindustrialprojectscitybackintoruralenterprisesin

45、principleallstationedinindustrialparks.Meanwhilestrictcontrolofexcesscapacityhighenergyconsumptionhighemissionenterprisestoenter.Thirdlyincreasedincentivesontheproject.InvestmentofthewholesocietytheTownshipCountyunitsgoo

46、utdraftproject.Toestablishinvestmentincentivesfsuccessfulintroductionofsignificantprojectgivesawardstounitsindividualstheintroductionoftaxftheimplementationoftheprojecttointroduceganizationintorewards.4preferentialpolici

47、essecurityindustries.IntermsofprojectexaminationapprovalbyareaAdministrativeCommitteeinconjunctionwiththedevelopmentplanninglindustrycommercequalitycontrolotherdepartments“onestopreceptiononestopservice“thesimplifiedproc

48、eduresthetimelimitiginally.InthemanagementofEIAinaccdancewiththe是制品質量和尺寸精度一致性好，缺點是分流道較長熔體阻力大且澆注系統(tǒng)凝料多。非平衡流道：從主流道末端到各型腔的分流道長度不相等。通常按距主流道遠近修正澆口尺寸。流道短但制品質量難保證一致。絕熱流道：是指將流道設計得相當粗大以致流道中心部位的塑料在連續(xù)注射時來不及凝固而始終保持熔融狀態(tài)從而使熔體能順利進入型腔的流道

49、。6.常見塑料注射模的澆口型式有哪些？了解其結構特點及適用場合。能辨別和選用澆口的類型。P88答：通常澆口可分為大澆口和小澆口兩類。前者也稱為非限制性澆口，系指直接澆口；后者也稱為限制性澆口或內澆口，常用的有側澆口、點澆口等。1）直接式澆口。注射時以等流程充模，澆注系統(tǒng)的流程短。常用于注塑大型、厚壁、長流程的制品及一些高粘度的塑料。2）側澆口。由于它開設在主分型面上，因而截面形狀易于加工和調整修正。常用于多型腔的模具上，并可設計成兩板模

50、。3）重疊式澆口。側澆口開設在塑件端面的邊緣，它可避免熔體在大型腔中產(chǎn)生噴射的現(xiàn)象。適用于低粘度的物料，在充模時使熔體能有序地注進。4）扇形澆口。從流道起向型腔擴張成扇形，深度逐步由深至淺。適用于大面積的薄壁塑件。除粘度較高的物料外均適用于一般的塑料。5）平縫型澆口。它是由扇形澆口演變而來，充模流動更加均衡，它的寬度等于或略大于型腔寬度。適用于對透明度和平直度要求、表面不允許有流痕的片狀塑料。6）點澆口。它是典型的限制型澆口。按適用位置

51、關系可分成兩種。一種是與主流道直接接通，整個點澆口成了棱形，只能用于對溫度穩(wěn)定的物料。使用較多的是經(jīng)分流道的多點進料的點澆口。7）潛伏式澆口。它潛入分型面一側沿斜向進入型腔。因此在開模時，不僅能自動地剪斷澆口，而且其位置可設在制品的側面、端面、和背面等各隱蔽處，使制品的外表面不留澆口的痕跡。它是點澆口在特殊場合下的一種應用形式，故具備點澆口的一切優(yōu)點，因而已獲廣泛應用。8）盤形澆口和圓形澆口。沿塑件內圓周進料的叫盤形澆口，沿外圓周進料的

52、叫環(huán)形澆口。它主要用于圓筒形制品或中間帶有孔的制品。這樣可以使進料均勻，在整個圓周上取得大致相同的流速，也易于順序地排氣，亦無熔接縫。9）輪輻澆口。它把整個圓周進料改成幾段小段圓弧進料，因此，不但去除澆口凝料方便且可省料，還由于型芯上部得到定位而增加了穩(wěn)定性。它的適用范圍類似于圓環(huán)形澆口。10）爪澆口。其與輪輻澆口的區(qū)別僅在與分流道與澆口不在一個平面內，型芯的頂端伸入定模內。適用于管狀的制件尤其是制件內孔較小、同心度要求高的管狀制品。1

53、1）護耳式澆口。其適用于對于難于成型或者有光學性能要求的制品，為能從制品上除去有殘余應力聚集的部分。它容許澆口附近產(chǎn)生縮孔，能有效地防止噴射流動而提高制品的內在質量。7.采用小澆口有何優(yōu)缺點？在選擇澆口的開設位置時要注意哪些問題？P94~97優(yōu)點：優(yōu)點：1)可大大提高塑料熔體剪切速率，表觀粘度降低明顯，致使充模容易。2)熔體經(jīng)過點澆口時因高速摩擦生熱，熔體溫度升高，粘度再次下降，致使流動性再次提高。3)能正確控制補料時間，無倒流之慮；有