Txhaj tshuaj molding txheej txheem rau cov yas thermoplastic

Thermoplastic txhaj tshuaj molding yog ib txoj kev ntawm melting cov ntaub ntawv yas thiab txhaj rau hauv cov kab noj hniav.
Thaum molten yas nkag mus rau hauv pwm, nws yog txias tsim rau hauv ib tug tej yam zoo raws li cov pwm kab noj hniav qauv. Cov duab uas tau tshwm sim feem ntau yog cov khoom kawg, thiab tsis tas yuav tsum ua haujlwm ntxiv ua ntej kev teeb tsa lossis siv los ua cov khoom kawg. Ntau cov ntsiab lus, xws li protrusions, tav, thiab threads, tuaj yeem tsim nyob rau hauv ib kauj ruam ntawm kev txhaj tshuaj molding.
Lub tshuab txhaj tshuaj molding muaj ob yam tseem ceeb: cov cuab yeej txhaj tshuaj rau melting thiab pub yas rau hauv pwm, thiab cov cuab yeej clamping. Kev ua haujlwm ntawm pwm kaw cov cuab yeej yog: 1. ua kom cov pwm kaw nyob rau hauv lub siab ntawm kev txhaj tshuaj; 2. Tshem tawm cov khoom ntawm lub tshuab txhaj tshuaj thiab yaj nws ua ntej txhaj cov yas rau hauv pwm. Tom qab ntawd, tswj lub siab thiab ceev kom txhaj cov yaj mus rau hauv pwm.
Tam sim no muaj ob txoj kev tsim cov khoom siv txhaj tshuaj: ntsia hlau hom pre plasticizer lossis ob-theem ntaus ntawv, thiab cov ntsia hlau reciprocating. Cov ntsia hlau hom pre plasticizer siv cov ntsia hlau ua ntej plasticizing (thawj theem) los txhaj cov yas molten rau hauv cov pas nrig txhaj tshuaj (theem thib ob).
Qhov zoo ntawm cov ntsia hlau ua ntej plasticizer yog qhov loj ntawm cov khoom siv molten, kev kub siab thiab ceev, thiab kev txhaj tshuaj meej meej (siv cov cuab yeej siv hluav taws xob ntawm ob qho kawg ntawm lub piston stroke). Cov kev muaj zog no yog xav tau rau cov khoom pob tshab, nyias-walled, thiab cov nqi ntau lawm. Nws qhov tsis zoo suav nrog lub sijhawm nyob tsis sib xws (ua rau cov khoom siv degradation), cov cuab yeej siv siab, thiab cov nqi tu.
Feem ntau siv reciprocating ntsia hlau txhaj tshuaj tsis xav tau lub plunger kom yaj thiab txhaj cov yas.