Raws li kev thov rau cov khoom yas txuas ntxiv zuj zus, kev txhaj tshuaj molding tau dhau los ua cov txheej txheem tsim khoom siv dav siv vim nws cov khoom lag luam siab, txheej txheem yooj yim, thiab muaj peev xwm xa cov txiaj ntsig zoo ib yam. Cov txheej txheem tso siab rau kev sib koom ua haujlwm ntawm cov khoom siv tshuaj molding, pwm, cov ntaub ntawv yas, thiab ua tib zoo tswj tsis tau hloov cov yas pellets rau hauv cov khoom uas muaj cov duab tshwj xeeb thiab cov yam ntxwv ua haujlwm. Ib qhov zoo- tswj cov txheej txheem tsim khoom yog qhov tseem ceeb rau kev tswj cov khoom zoo thiab txhim kho kev tsim khoom.
Kev tsim khoom pib nrog kev npaj raw khoom. Cov ntaub ntawv yas tsim nyog raug xaiv raws li daim ntawv thov thiab xav tau kev ua haujlwm. Nyob ntawm cov khoom siv, kev npaj ntxiv xws li ziab, xim sib txuam, lossis kev sib xyaw yuav tsim nyog. Qee cov plastics yog cov rhiab heev rau cov dej noo, thiab cov dej noo ntau dhau ntawm cov khoom noj tuaj yeem cuam tshuam rau ob qho tib si tsos thiab kev ua haujlwm txhua yam. Yog li ntawd, qhov xwm txheej ntawm cov khoom yuav tsum tau kuaj xyuas ua ntej kev tsim khoom, nrog rau kev cia thiab tuav cov txheej txheem hauv qhov chaw.
Cov theem tom ntej yog pub mis thiab plasticization. Yas pellets nkag mus rau hauv lub thoob ntawm lub tshuab txhaj tshuaj molding, qhov uas lawv maj mam yaj los ntawm kev tswj cua sov thiab cov neeg kho tshuab shear generated los ntawm lub rotating ntsia hlau. Cov ntsia hlau thauj cov khoom mus rau pem hauv ntej thiab khaws cov ntim uas xav tau ntawm cov yas molten ntawm nws pem hauv ntej. Thaum lub sij hawm plasticization, tsis xws li qhov kub thiab txias, rov qab siab, thiab cov ntsia hlau ceev yuav tsum tau tswj kom zoo kom ua tiav qhov sib xws thiab ruaj khov.
Cov txheej txheem ces txav mus rau pwm kaw thiab txhaj tshuaj. Thaum cov pwm tau kaw thiab tsim cov kab noj hniav, cov ntsia hlau txav mus rau pem hauv ntej thiab quab yuam ib qho ntsuas ntawm cov yas molten rau hauv cov kab noj hniav ntawm kev tswj siab thiab ceev. Cov khoom ntws los ntawm cov kab noj hniav kom txog thaum cov duab xav tau puv. Kev txhaj tshuaj nrawm, siab, thiab tus qauv tsim ntawm pwm lub tshuab khiav tuaj yeem cuam tshuam kev ua haujlwm puv, yog li cov khoom no yuav tsum tau hloov kho raws li cov khoom geometry.
Tom qab ua tiav, cov txheej txheem nkag mus rau theem tuav thiab txias. Tuav siab yog tswj xyuas lub sijhawm tswj kom them nyiaj rau cov khoom shrinkage uas tshwm sim thaum lub sij hawm txias, pab txhim kho qhov ntev stability. Cov pwm txias tshuab ces tshem tawm cov cua sov los ntawm cov yas kom cov khoom tuaj yeem maj mam solidify. Lub sijhawm txias yuav tsum yog nyob ntawm yam xws li cov khoom siv, phab ntsa thickness, pwm kub, thiab cov khoom geometry.
Thaum ib feem tau mus txog qhov tsim nyog rau kev tshem tawm, lub tshuab mus rau pwm qhib thiab ejection. Cov pwm sib cais, thiab cov txheej txheem ejection thawb cov khoom tiav tawm ntawm cov kab noj hniav. Tom qab demolding, yuav tsum tau ua hauj lwm ntxiv, nrog rau kev tshem tawm lub rooj vag, trimming, tu, thiab kev soj ntsuam pom. Cov khoom lag luam uas yuav tsum tau nruj me ntsis kuj yuav raug ntsuas qhov ntev thiab qhov ntsuas qhov ua tau zoo.
Zuag qhia tag nrho, cov txheej txheem kev txhaj tshuaj molding muaj ntau theem kev sib txuas, suav nrog kev npaj cov khoom, plasticization, pwm kaw, txhaj tshuaj, tuav, txias, ejection, thiab tom qab- ua. Txhua theem tuaj yeem cuam tshuam cov khoom kawg. Los ntawm kev xaiv cov khoom tsim nyog, optimizing pwm tsim, thiab ua tib zoo tswj cov txheej txheem tsis zoo, cov tuam ntxhab tuaj yeem txhim kho cov khoom zoo thiab kev ruaj khov. Raws li automation thiab ntse manufacturing technologies tau nce mus rau hauv kev tsim khoom, kev txhaj tshuaj molding yuav tsum ua kom zoo dua, meej, thiab ntse.