Lub hauv paus ntsiab lus ua haujlwm ntawm lub tshuab txhaj tshuaj molding zoo ib yam li cov koob txhaj tshuaj. Nws siv lub thrust ntawm ib tug ntsia hlau (los yog plunger) txhaj pre-plasticized molten yas (piv txwv li, ib tug viscous flow xeev) rau hauv ib tug kaw pwm kab noj hniav. Tom qab solidification, cov khoom tiav tau txais.
Txhaj tshuaj molding yog txheej txheem cyclical. Txhua lub voj voog feem ntau suav nrog: metered feeding-melting and plasticizing-pressure injection-pwm filling and cooling-pould open and part extingu. Tom qab cov yas tau muab tshem tawm, cov pwm raug kaw dua, thiab lub voj voog tom ntej pib.
Txhaj Moulding Tshuab Cov Khoom Siv Ua Haujlwm: Txhaj tshuaj molding tshuab cov khoom lag luam suav nrog peb yam: tswj cov keyboard ua haujlwm, hluav taws xob tswj kev ua haujlwm, thiab kev ua haujlwm hydraulic. Cov no suav nrog kev xaiv cov txheej txheem txhaj tshuaj, kev pub noj, kev txhaj tshuaj, kev txhaj tshuaj ceev, hom ejection, saib xyuas qhov kub ntawm txhua ntu ntawm lub thoob, thiab kho qhov kev txhaj tshuaj siab thiab rov qab siab.
Cov txheej txheem molding dav dav ntawm cov ntsia hlau- hom txhaj tshuaj molding tshuab yog raws li nram no: Ua ntej, granular los yog hmoov yog ntxiv rau hauv lub thoob. Cov yas yog molten los ntawm kev sib hloov ntawm cov ntsia hlau thiab cov cua sov ntawm lub thoob sab nrauv phab ntsa. Tom qab ntawd, lub tshuab kaw cov pwm thiab txav mus rau qhov chaw txhaj tshuaj rau pem hauv ntej, nqa lub nozzle ze rau pwm lub sprue. Tom ntej no, cov roj pressurized yog nkag mus rau hauv lub tog raj kheej txhaj tshuaj, thawb lub hau ntswj mus rau pem hauv ntej thiab txhaj cov khoom molten rau hauv qhov txias, kaw pwm ntawm kev kub siab thiab ceev. Tom qab ib lub sij hawm ntawm lub sij hawm thiab siab tuav (tseem hu ua tuav lub siab) thiab txias, cov khoom solidifies thiab ces tshem tawm ntawm pwm. (Lub hom phiaj ntawm kev tuav lub siab yog txhawm rau tiv thaiv rov qab ntawm cov khoom molten nyob rau hauv cov pwm kab noj hniav, ntxiv cov khoom rau hauv cov kab noj hniav, thiab xyuas kom cov khoom muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Plasticization yog qhov yuav tsum tau ua ua ntej kom ua tiav thiab ua kom zoo ntawm cov khoom molded. Txhawm rau ua kom tau raws li qhov yuav tsum tau ua ntawm molding, txhaj tshuaj yuav tsum xyuas kom txaus siab thiab ceev. Nyob rau tib lub sijhawm, vim muaj kev txhaj tshuaj siab, lub siab sib xws yog tsim nyob rau hauv pwm kab noj hniav (qhov nruab nrab siab hauv pwm kab noj hniav feem ntau yog 20 thiab 45 MPa), yog li ntawd, yuav tsum muaj lub zog clamping loj txaus.
Yog li ntawd, chav txhaj tshuaj thiab pwm clamping chav tsev yog cov khoom tseem ceeb ntawm lub tshuab txhaj tshuaj molding.
Kev ntsuam xyuas ntawm cov khoom yas feem ntau suav nrog peb yam: ua ntej, zoo li zoo, nrog rau kev ncaj ncees, xim, thiab gloss; thib ob, qhov tseeb ntawm qhov ntev thiab qhov txheeb ze txoj haujlwm; thiab thib peb, lub cev, tshuaj, thiab hluav taws xob khoom tsim nyog rau kev siv. Cov kev xav tau zoo no txawv nyob ntawm qhov kev thov ntawm cov khoom. Cov khoom tsis xws luag feem ntau tshwm sim los ntawm cov teeb meem nrog pwm tsim, raug precision, thiab hnav. Txawm li cas los xij, hauv kev muaj tiag, cov kws tshaj lij hauv cov chaw tsim khoom yas feem ntau tawm tsam nrog kev ua haujlwm tsawg ntawm kev siv cov txheej txheem los them nyiaj rau cov pwm pwm.
Kho cov txheej txheem thaum lub sij hawm tsim khoom yog qhov tseem ceeb rau kev txhim kho cov khoom zoo thiab cov zis. Vim tias lub voj voog txhaj tshuaj molding yog luv heev, kev tswj tsis zoo tuaj yeem ua rau cov kwj ntawm cov khoom tsis raug. Thaum kho cov txheej txheem, nws yog qhov zoo tshaj plaws los hloov tsuas yog ib qho mob ntawm ib lub sij hawm, soj ntsuam cov kev hloov ntau zaus. Kho qhov siab, qhov kub thiab txias, thiab lub sij hawm tag nrho ib zaug tuaj yeem ua rau tsis meej pem thiab tsis to taub, ua rau nws nyuaj rau kev nkag siab qhov ua rau muaj teeb meem. Muaj ntau ntau yam kev ntsuas thiab kev kho cov txheej txheem.
