Dab tsi yog cov kauj ruam tshwj xeeb los kho lub teb chaws txias tsis ntsuas ntawm kev txhaj tshuaj molding tshuab?
Tso lus
Kho cov ntsuas kub thiab txias ntawm kev txhaj tshuaj molding tshuab bar raws li cov yam ntxwv raw, thiab qhov kev qhia ua kom pom tseeb raws li kev hloov kho ". Cov kauj ruam tshwj xeeb yog raws li hauv qab no:
1. Npaj Tshooj: Qhia meej cov ntaub ntawv tseem ceeb
Paub meej tias cov khoom siv Raw cov yam ntxwv
Tshawb xyuas kev ua qhov kub ua (melting taw tes \/ iav hloov kub, pom zoo melt kub) muab los ntawm cov khoom siv raw, piv txwv li:
ABS: Melt Kub 220-260 degree, thermal decomposition kub txog 270 degree
PC: yaj qhov kub 260-320 degree, thermal decomposition kub txog 340 degree
Sau cov fluidity ntawm cov khoom siv raw (siab dua kub yuav tsum muaj rau cov khoom siv tsis zoo) thiab hygroscopicity yuav tsum tau qhuav ua ntej, xws li PA thiab PC).
Nkag siab cov khoom tsis sib xws
Paub meej tias cov naj npawb ntawm cov kab txiav nyiaj (xws li peb ntu: Seem tshooj, Tsib Seem, tshooj lus 1, metering seem, nozzle).
Cov Khoom Sib Txawv Hom Khoom Sib Txawv:
Ntsia Hlau Txhaj Tshuaj Molding Tshuab: Cia siab rau ntawm cov ntsia hlau shear tshav kub kub, choment kub yuav yog qis dua qis dua ({} degree qis dua li plunger hom).
Thov kev txhaj tshuaj molding tshuab: tsis muaj zog tshem tawm cov nyhuv, xav tau ntau dua cov cua kub (cia rau ntawm chim cua sov).
Xyuas cov xwm txheej: Cov cua kub cov cuab yeej cua sov yuav muaj hnub nyoog (ntsuas qhov kub thiab txias nrog cov nqi nruab nrab thiab tus nqi tiag tiag yog tsawg dua 5 degree).
2. Tom qab kub chaw: Ntu Gradient Dispient
1. Segmented chaw raws li Barbel muaj nuj nqi (noj cov hom tsib-ntu ua piv txwv)
Segment Muaj nuj nqi daws cov qauv hauv cov hauv paus ntsiab lus hauv cov kab ke
Pub Pub rau (tom qab kawg) kev sib tw cov ntaub ntawv nyoos kom tiv thaiv cov khoom siv ua kom loj dua ntawm cov khoom siv roj av {}} degree (softing point 105 degree)
COMPERT SCERT (nruab nrab ntu) cov ntaub ntawv sib tw softening, nce los ntawm {{} {} {degree, compression seem 2: 220 degree
Meterated Seem (ntu xub ntiag) kom paub tseeb tias cov khoom siv kub thiab txias (lossis nruab nrab ntawm cov khoom kub) 240 degree (nruab nrab {1} degree)
Nozzle kev tswj
2. Kev hloov kho rau cov xwm txheej tshwj xeeb
Cov khoom siv ua thermosensitive (xws li PVC, pom): 5-10}} degree ntu los tiv thaiv kev kub ntxhov.
Cov ntaub ntawv High-Flue (xws li PE, PP): Lub nozzle kub yog tib yam li lossis metering seem kom tsis txhob molten cov khoom dripping (drawbing).
Ntsia thawv parameter sib phim \/ tom qab lub siab siab yog qhov siab, thiab cov roj cua sov tuaj yeem txo los ntawm 5-10 degree; Qhov kub yuav tsum tau nce ntawm qis ceev.
III. Pwm Pom Kev Soj Ntsuam: Txheeb xyuas qhov pib thawj zaug
1. Ntaws Txhaj Tshuaj Ntsuam Xyuas (Kev Txhaj Tshuaj Siv yam tsis txhim kho cov pwm)
Saib lub xeev melt:
Qhov zoo tagnrho: cov yaj yog du, tsis muaj npuas, thiab cov xim yog uniform (xws li ABS yog pob tshab thiab me ntsis daj, tsis muaj kev hlawv cov nplais).
Nyom zuj zus:
Cov txiv hmab yog xaim-kos duab thiab tau teev → qhov kub thiab txias thiab txias dua, nce ntu \/ nozzle by {1}} degree.
Lub yaj yog daj thiab muaj scorch cim → qhov kub thiab txias dhau los yog txo qhov ntsuas kub ntawm 10 degree, thiab ntxuav cov khoom ntsia hlau.
2. Thawj qhov kev tsim khoom thiab kev tsis taus
Tsis txaus \/ tsis muaj cov khoom siv: nws yuav yog qhov ntsuas kub ntawm lub mezzle ntu lossis nozzle yog tsawg, thiab qhov kub thiab kub tau nce los ntawm {{0} degree.
Burst \/ Nyem: Lub suab viscosity dhau lawm dhau lawm (qhov kub dhau lawm
Npuas \/ Nyiaj Txiaj Ntsig: Cov khoom siv raw muaj dej (xav tau kom qhuav) lossis melting yog tsis ncaj, nce ntu ntawm cov dej evaporation.
Nto Flow Marks \/ Vuam cov cim: qhov kub yaj yog tsis sib xws, thiab ntsuas qhov sib txawv ntawm ntu (tswj hwm nws (tswj hwm hauv ib ntu ntawm {1}} degree).
IV. Dynamic zoo-tunting: maj mam ua kom sai
Hloov kho amplitude thiab zaus
Kho 5-10 degree rau txhua ntu kom tsis txhob muaj ntau yam kev hloov pauv, thiab tos rau cov cua sov chev kom ruaj).
Ua ntej hloov kho ntawm ntu nozzle thiab meterraling seem (cuam tshuam ncaj qha rau pwm sau), thiab tom qab ntawd txoj kev ua kom pom seem nruab nrab thiab ntu ntu.
Kev siv cov tswv yim zoo
Cov Khoom Muag Tsis xws luag kub-cuam tshuam txog cov laj thawj hloov kho cov kauj ruam
Kev hlawv, dub pob zeb thoob plaws lub zos overheating (nozzle \/ ntsia hlau tuag ces kaum) txo qhov ntsuas kub ntawm 10 degree, kuaj cov kev nyiam huv ntawm cov ntsia hlau
Txias Khoom Siv Me (Pub Port) qis nozzle tea, yaj pem hauv ntej cua txias nzzle}} degree, los yog nce pob hluav taws xob cua sov
Kev txom nyem transparency (PC) qhov kub tsis txaus ua rau tsis txaus siab melting meterting Metering kub nce los ntawm}}} degree los xyuas kom meej unfiform
Qhov seem tsis txaus ntseeg
Kev ceev faj rau cov ntoo khaub lig hloov
Thaum hloov cov ntaub ntawv raw, nws yog ib qho tsim nyog los ntxuav lub thoob (kom tsis txhob muaj qhov kub ntawm cov ntaub ntawv tshiab (qhov kub yuav tsum tau nce ntawm 240 qib {2}} degree).
5. Kho cov lus: Daim ntawv cov qauv ntaub ntawv
Sau cov ntaub ntawv tseem ceeb
Tsim kom muaj "barrel kub parameter lub rooj", suav nrog:
Cov Khoom Siv Khoom Siv Raw Khoom Siv, Khoom Ua qauv, ntu kub (Seem seem (Tshooj Ntu tshooj \/ metering ntu \/ nozzle)
Ntsia thawv ceev, rov qab lub siab (cuam tshuam shear kub thiab tsis ncaj cuam tshuam rau kub)
Cov txheej txheem hloov kho (xws li "Drooling ploj tom qab lub nozzle poob ntawm 250 degree rau 245 degree")
Cov Khoom Muag Khoom Kawg (Tsis muaj qhov tsis xws luag, Tsim Nyog Loj)
Lub sijhawm ua kom zoo ntev
Rau tib cov ntaub ntawv thiab tib cov khoom lag luam, khaws cov ntaub ntawv keeb kwm los ua tus qauv "qauv kub kom txo tau lub sijhawm sib txuas.
Ntsuas ntsuas qhov ntsuas kub tsis tu ncua (ib xyoos ib zaug) kom ntseeg tau tias cov teeb tus nqi yog sib xws nrog tus nqi tiag tiag.
6. Kev ceev faj
Kev ua haujlwm nyab xeeb: hnav cov hnab looj tes sov-insulating thaum hloov kho kom tsis txhob muaj kev sib cuag nrog lub siab kub; Ua cov khoom siv kho vajtse (xws li hloov lub nplhaib cua sov) tom qab kaw lossis kaw.
Kev yoog kom haum rau cov cuab yeej sib txawv: cov kab uas cov kab uas cov voos loj me me (φ Tom qab ntsuas ntsuas kub ntawm cov cuab yeej qub, kho cov teeb tsa tus nqi raws li qhov kub (xws li 10 degree qis dua, nce cov teeb tsa tus nqi los ntawm 10 degree).
Cov Ntsiab Lus Ntsiab Lus
Kev npaj: qhia meej cov yam ntxwv ntawm cov ntaub ntawv raw, khoom segmentation, thiab siv cov khoom tsis raug.
Thawj zaug tsim qauv: ntu raws li chim ua haujlwm, teeb meem kub nyob rau hauv gradient (pub tshooj
Kev hloov kho me me: kho me me (5-10 degree), ntsuas ntu, thiab maj mam ua kom tiav kom tshem tawm tau.
Kev kho mob: cov ntaub ntawv tsis zoo, tsim cov qauv, thiab hloov kho cov khoom sib txawv thiab cov khoom siv hloov.
Los ntawm cov kauj ruam saum toj no, cov neeg chim siab tuaj yeem hloov kho kom haum rau kev sib npaug melt fluidity thiab thermal ruaj khov ua tau zoo ruaj khov cov khoom siv tau zoo.
