Mukuita kuumbwa kwekushandura zvidimbu zvepurasitiki kuita zvigadzirwa zvepurasitiki, mapurasitiki anowanzo kuisirwa tembiricha yakanyanya uye kudzvanywa kwakanyanya, uye kuyerera kuumbwa pamitengo yakakwira yekugera.Mamiriro akasiyana ekuumba uye maitiro achave nemhedzisiro yakasiyana pamhando yechigadzirwa.Jekiseni molding ine epurasitiki Iine zvinhu zvina: mbishi zvinhu, jekiseni rekugadzira muchina, mold uye jekiseni molding process.
Hunhu hwezvigadzirwa hunosanganisira kunaka kwezvinhu zvemukati uye chimiro chekutaridzika.Hunhu hwemukati hwemukati hunonyanya kusimba remagetsi, uye ukuru hwekushushikana kwemukati hunobata zvakananga kusimba kwemagetsi echigadzirwa.Zvikonzero zvikuru zvekugadzira kushushikana kwemukati zvinotemerwa nekujeka kwechigadzirwa uye kutaridzika kwemamorekuru mukuumbwa kwepurasitiki.ye.Kutaridzika kwemhando yechigadzirwa ndiyo yemhando yepamusoro yechigadzirwa, asi kurwa uye deformation yechigadzirwa chinokonzerwa nekushushikana kukuru kwemukati kuchakanganisawo kutaridzika kwemhando.Kutaridzika kwemhando yezvigadzirwa zvinosanganisira: zvigadzirwa zvisina kukwana, ma denti echigadzirwa, weld mamaki, flash, mabhuru, waya dzesirivha, mavara matema, deformation, makatsemuka, delamination, peeling uye discoloration, nezvimwewo, zvese zvine chekuita nekuumba tembiricha, kumanikidza, kuyerera, nguva. uye chinzvimbo.zvine chekuita.
Content
Chikamu Chekutanga: Molding tembiricha
Chikamu Chechipiri: Molding process pressure
Chikamu chechitatu: jekiseni kuumba muchina kumhanya
Chikamu Chechina: Kuronga nguva
Chikamu Cheshanu: Chinzvimbo Kudzora
Chikamu Chekutanga: Molding tembiricha
Tembiricha yebhare:Iko kupisa kwekunyunguduka kwepurasitiki.Kana iyo tembiricha yebhari yakaiswa zvakanyanya, iyo viscosity yepurasitiki mushure mekunyunguduka yakaderera.Pasi pesimba rejekiseni rimwechete uye chiyero chekuyerera, kumhanya kwejekiseni kunokurumidza, uye zvigadzirwa zvakaumbwa zvinogara zvichipenya, sirivheri, discoloration uye brittleness.
Tembiricha yedhiramu yakadzikira, purasitiki haina kugadzirwa nepurasitiki, viscosity yakakwira, kumhanya kwejekiseni kunononoka pasi pekumanikidza kwejekiseni imwechete uye chiyero chekuyerera, zvigadzirwa zvakaumbwa hazvina kukwana, iwo weld mamaki ari pachena, zviyero zviri pachena. isina kugadzikana uye kune zvivharo zvinotonhora mune zvigadzirwa.
Nozzle tembiricha:Kana tembiricha yemhino yakakwirisa, iyo muromo inodonha nyore, ichikonzera kutonhora filaments muchigadzirwa.Kudzika kwekushisa kwenozzle kunokonzera kuvhara kwe mold kudurura system.Kudzvanywa kwejekiseni kunofanirwa kuwedzerwa kubaya epurasitiki, asi kuchave nekutonhora zvinhu muchigadzirwa chakaumbwa nekukasira.
Mold tembiricha:Kana tembiricha yekuumbwa yakakwira, kudzvanywa kwejekiseni uye mwero wekuyerera unogona kudzika.Nekudaro, panguva imwechete yekumanikidza uye kuyerera kweyero, chigadzirwa chinopenya nyore, warp uye deform, uye zvichave zvakaoma kuburitsa chigadzirwa kubva mukuumbwa.Iyo tembiricha ye mold yakadzikira, uye pasi pesimba rejekiseni rimwechete uye chiyero chekuyerera, chigadzirwa hachina kuumbwa, chine mabubble uye weld mamaki, nezvimwe.
Plastic drying tembiricha:Mapurasitiki akasiyana ane tembiricha yekuomesa yakasiyana.Mapurasitiki eABS anowanzo kuseta tembiricha yekuomesa ye80 kusvika 90 ° C, zvikasadaro zvichave zvakaoma kuomesa uye kufambisa mwando uye zvakasara zvinonyungudutsa, uye zvigadzirwa zvichave nyore kuva newaya dzesirivha nemabhuru, uye kusimba kwezvigadzirwa kuchadererawo.
Chikamu Chechipiri: Molding process pressure
Pre-molding back pressure:high back pressure uye high storage density zvinoreva kuti zvimwe zvinhu zvinogona kuchengetwa mukati mehovha imwechete yekuchengetedza.Low back pressure inoreva kuderera kwekuchengetedza density uye zvishoma kuchengetedza zvinhu.Mushure mekugadzirisa nzvimbo yekuchengetedza, uye wozoita kugadzirisa kukuru kumusana wekumanikidzika, unofanirwa kuchenjerera kugadzirisa nzvimbo yekuchengetedza, kana zvisina kudaro ichaita nyore nyore kupenya kana kusakwana chigadzirwa.
Jekiseni pressure:Mhando dzakasiyana dzemapurasitiki ane akasiyana melt viscosities.Iyo viscosity yemapurasitiki amorphous inoshanduka zvakanyanya nekuchinja kwekushisa kwepurasitiki.Iyo jekiseni pressure inoiswa zvinoenderana neye welding viscosity yepurasitiki uye epurasitiki process ratio.Kana dzvinyiriro yejekiseni yakadzikira zvakanyanya, chigadzirwa chinenge chisina kubayiwa zvakakwana, zvichiita kuti pave nemadents, weld marks uye hukuru husina kugadzikana.Kana kudzvanywa kwejekiseni kwakakwira zvakanyanya, chigadzirwa chichava neflash, discoloration uye kuoma mukuburitsa mold.
Clamping pressure:Izvo zvinoenderana nenzvimbo yakarongerwa ye mold cavity uye jekiseni pressure.Kana iyo clamping pressure isina kukwana, chigadzirwa chinopenya nyore uye kuwedzera uremu.Kana iyo clamping force yakakura kwazvo, zvichave zvakaoma kuvhura mold.Kazhinji, iyo clamping pressure setting haifanire kudarika 120par/cm2.
Kubata pressure:Kana jekiseni rapera, screw inoramba ichipihwa pressure inonzi hold pressure.Panguva ino, chigadzirwa mu mold cavity haisati yaoma.Kuchengeta kudzvanywa kunogona kuenderera mberi nekuzadza mold cavity kuti ive nechokwadi chekuti chigadzirwa chakazara.Kana iyo yekubata kudzvanywa uye yekumanikidza yekumisikidza yakakwira zvakanyanya, zvinounza kupikisa kukuru kune inotsigira mold uye yekudhonza-kunze core.Chigadzirwa chacho chinoshanduka nyore chichena uye chinoputika.Mukuwedzera, iyo mold runner gedhi ichawedzerwa nyore nyore uye yakasimbiswa nepurasitiki yekuwedzera, uye gedhi richaputsika mumumhanyi.Kana kudzvinyirirwa kwakanyanya kuderera, chigadzirwa chichava nedenti uye zviyero zvisina kugadzikana.
Nheyo yekuseta ejector uye neutron pressure ndeyekumisa kudzvanywa kunoenderana nehukuru hwese hwenzvimbo yemold cavity, iyo core projection nzvimbo yeiyo yakaiswa core, uye kuoma kwejometri yechigadzirwa chakaumbwa.saizi.Kazhinji, izvi zvinoda kuseta kudzvanywa kweinotsigira mold uye neutron cylinder kuti ikwanise kusunda chigadzirwa.
Chikamu chechitatu: jekiseni kuumba muchina kumhanya
Screw speed: Pamusoro pekugadzirisa pre-plastic flow rate, inonyanya kukanganiswa ne-pre-plastic back pressure.Kana iyo pre-molding kuyerera kweyero yakagadziridzwa kune yakakura kukosha uye pre-kuumbwa kumashure kumanikidza kwakakwira, sezvo screw inotenderera, ipurasitiki ichave nehombe yekugera simba mudhiramu, uye epurasitiki mamorekuru maitiro anotemwa nyore. .Chigadzirwa chacho chichava nemavara madema uye mitsetse yakasviba, iyo inokanganisa maitiro ekuonekwa uye kusimba kwechigadzirwa., uye tembiricha yekudziya yedhiramu yakaoma kudzora.Kana iyo pre-plastic flow rate yakadzikira zvakanyanya, iyo pre-plastiki yekuchengetedza nguva ichawedzerwa, izvo zvinokanganisa kuumbwa kutenderera.
Kumhanya kwejekiseni:Iyo yekumhanyisa jekiseni inofanirwa kusetwa zvine musoro, zvikasadaro ichakanganisa kunaka kwechigadzirwa.Kana jekiseni rinokurumidza kukurumidza, chigadzirwa chichava nemafuru, chakatsva, chakasvibiswa, nezvimwewo. Kana jekiseni rinokurumidza kunonoka, chigadzirwa chichave chisina kuumbwa uye chichava nezviratidzo zve weld.
Tsigira mold uye neutron flow rate:haifanirwe kuiswa yakakwira zvakanyanya, zvikasadaro iyo ejection uye yepakati kudhonza mafambiro ichave yakakurumidza, zvichikonzera kusagadzikana ejection uye core kudhonza, uye chigadzirwa chinoshanduka chena nyore.
Chikamu Chechina: Kuronga nguva
Nguva yekuomesa:Inguva yekuomeswa kwemidziyo yepurasitiki.Mhando dzakasiyana-siyana dzepurasitiki dzine yakanyanya kuomesa tembiricha uye nguva.Iyo tembiricha yekuomesa yeABS plastiki i80 ~ 90 ℃ uye nguva yekuomesa imaawa maviri.Plastiki yeABS inowanzotora 0.2 kusvika 0.4% mvura mukati memaawa makumi maviri nemana, uye mvura inogona kuumbwa jekiseni i 0.1 kusvika 0.2%.
Jekiseni uye kumanikidza kubata nguva:Iyo nzira yekudzora yemuchina wejekiseni yekombuta inoshongedzerwa neakawanda-nhanho jekiseni kugadzirisa kudzvanywa, kumhanya uye jekiseni repurasitiki huwandu mumatanho.Iko kumhanya kwepurasitiki yakabaiwa mugomba rekuumbwa inosvika pakukurumidza kukurumidza, uye chitarisiko uye zvemukati zvemhando yezvigadzirwa zvakaumbwa zvinovandudzwa.
Naizvozvo, maitiro ejekiseni anowanzo shandisa chinzvimbo chekutonga panzvimbo yekudzora nguva.Kumanikidzwa kwekubata kunodzorwa nenguva.Kana iyo nguva yekubata yakareba, density yechigadzirwa yakakwira, uremu hunorema, kushushikana kwemukati kwakakura, kudhirowa kwakaoma, nyore kuchena, uye kutenderera kunowedzera.Kana iyo nguva yekubata ipfupi, chigadzirwa chichava chakajairwa kune dents uye zviyero zvisina kugadzikana.
Nguva yekutonhodza:Iko kuve nechokwadi kuti chigadzirwa chakagadzikana muchimiro.Inoda nguva yakakwana yekutonhodza uye kuumba mushure mekunge purasitiki yapinzwa mugomba reforoma yakaumbwa muchigadzirwa.Zvikasadaro, chigadzirwa chiri nyore kuchinjika uye kukanganisa kana mold yakavhurwa, uye ejection iri nyore kudzima uye kuve chena.Nguva yekutonhodza yakarebesa, izvo zvinorebesa kutenderera kwekuumbwa uye hazvina hupfumi.
Chikamu Cheshanu: Chinzvimbo Kudzora
Iyo mold shifting position ndiyo yese yekufamba chinhambwe kubva pakuvhurwa kwe mold kusvika pakuvhara nekukiya, iyo inonzi mold shifting position.Nzvimbo yakanakisisa yekufambisa mold ndeyekukwanisa kubvisa chigadzirwa zvakanaka.Kana iyo mold yekuvhura kureba yakakurisa, iyo molding kutenderera ichave yakareba.
Chero bedzi nzvimbo yerutsigiro yekuumbwa ichidzorwa, nzvimbo yejection kubva muhutu inogona kubviswa nyore nyore uye chigadzirwa chinogona kubviswa.
Nzvimbo yekuchengetera:Chekutanga, huwandu hwepurasitiki yakaiswa muchigadzirwa chakaumbwa hunofanirwa kuve nechokwadi, uye chechipiri, huwandu hwezvinhu zvakachengetwa mudhiramu hunofanirwa kudzorwa.Kana nzvimbo yekuchengetedza ichidzorwa neanopfuura pfuti imwe chete, chigadzirwa chinopenya nyore, kana zvisina kudaro chigadzirwa chichave chisina kuumbwa.
Kana pane zvinhu zvakawandisa mubhodhoro, ipurasitiki ichagara mubhodhoro kwenguva yakareba, uye chigadzirwa chacho chinopera nyore nyore uye chinokanganisa kusimba kwechigadzirwa chakaumbwa.Kusiyana neizvi, zvinokanganisa kunaka kwepurasitiki yepurasitiki, uye hapana zvinhu zvinodzoserwa muforoma panguva yekumanikidza kuchengetedza, zvichikonzera kusakwana kuumbwa kwechigadzirwa nemadent.
Mhedziso
Hunhu hwemajekiseni akaumbwa zvigadzirwa zvinosanganisira kugadzirwa kwechigadzirwa, zvigadzirwa zvepurasitiki, dhizaini yekugadzira uye kugadzirisa mhando, jekiseni molding muchina kusarudzwa uye kugadzirisa maitiro, etc. Injection process yekugadzirisa haingotangi kubva pane imwe nzvimbo, asi inofanira kutanga kubva pamusimboti wekuita jekiseni. .Kuongorora kwakadzama uye kwakadzama kwenyaya, kugadzirisa kunogona kuitwa chimwe nechimwe kubva kune akawanda maficha kana akawanda nyaya dzinogona kugadziriswa kamwechete.Nekudaro, iyo nzira yekugadzirisa uye musimboti zvinoenderana nemhando uye maitiro mamiriro ezvigadzirwa zvinogadzirwa panguva iyoyo.
Nguva yekutumira: Nov-15-2023