Cov txheej txheem molding ntawm cov khoom yas tsis tsuas yog cuam tshuam cov duab thiab qhov loj ntawm cov khoom, tab sis tseem cuam tshuam ncaj qha rau kev ua tau zoo thiab cov khoom zoo. Vim lawv cov khoom sib txawv ntawm lub cev thiab tshuaj, cov thermoplastics thiab cov thermosets muaj ntau txoj kev molding. Hauv tsab xov xwm no, peb yuav ua qhov kev sib piv ntawm plaub hom yas molding hauv kev lag luam - kev txhaj tshuaj molding, tshuab moulding, blister molding thiab extrusion molding.
Txhaj tshuaj molding
Txhaj tshuaj molding tuaj yeem faib ua kev txhaj tshuaj molding cov txheej txheem thiab tuag cov txheej txheem. Txhaj Tshuaj Molding Tshuab xa mus rau kev txhaj tshuaj molding tshuab, kev txhaj tshuaj yas lossis thermosetting cov khoom siv, txhaj tshuaj molding yog tiav los ntawm kev txhaj tshuaj molding tshuab thiab pwm. Txhaj tshuaj molding yog feem ntau siv rau thermoplastics. Nws zoo ib yam li extrusion molding, qhov sib txawv yog tias molten yas los ntawm lub nozzle los ntawm lub nozzle los ntawm cov pwm kaw, hauv cov khoom sib xyaw thiab cov khoom siv pwm. Ntau lawm ntau lawm ntawm cov thawv me me, yam muaj yam yuav tsum muaj, cov khoom zoo li cov khoom thiab lwm yam. Kev txhaj tshuaj molding ua tau zoo uas yuav tsum muaj xim loj qauv qauv pom kom tau raws li ua tiav thiab zoo, khaws kev lag luam huv, ntim. Txhaj tshuaj molding ntawm lub dav tshaj plaws ntawm cov khoom lag luam, tsuav yog muaj pwm tuaj yeem tsim cov khoom lag luam, thiab yooj yim heev.
Zoo: tuaj yeem tsim cov duab nyuaj, cov khoom lag luam siab. Kev ntau lawm kev ua haujlwm, haum rau huab hwm coj ntau lawm. Cov khoom siv peev txheej siab siv, tsis muaj khib.
● Qhov tsis zoo: Cov cuab yeej siv siab ntawm cov cuab yeej, ua kom muaj pwm ua kom zoo nkauj. Cov kev xav tau ua haujlwm ntau dua rau cov ua haujlwm.
Blister molding
Blister molding yog cov txheej txheem yas, lub hauv paus ntsiab lus tseem ceeb yog nthuav tawm cov ntawv yas tawv kom sov thiab muag muag, siv lub tshuab nqus tsev adsorption ntawm cov pwm, tom qab txias molding. Siv dav hauv kev tsim cov lauj kaub, phaj, cov khoom ntim khoom, nrog rau cov ntim yas, teeb pom kev zoo, tshaj tawm, kho kom zoo nkauj thiab lwm yam lag luam. Cov khoom sim yuav tsum tsim nyog, lub buckle me ntsis tuaj yeem khi cov khoom, lub thickness yuav tsum sib npaug, thiab qhov saum npoo yuav tsum du thiab pob tshab.
Zoo: Cov khoom siv yooj yim, tus nqi qis. Haum rau kev tsim cov khoom sib nyias-walled.
● Disadvantages: cov khoom zoo yog txwv los ntawm pwm tsim. Ntau lawm efficiency kuj tsawg.
Tshuab Moulding
Tshuab moulding feem ntau yog siv rau cov thermoplastics. Yas los ntawm extrusion ntawm tubular yas parison, yuav muab tso rau hauv folio pwm thaum nws kub, tam sim ntawd tom qab kaw lub pwm nyob rau hauv lub parison ntawm compressed cua kom cov yas parison tshuab thiab nruj nreem adhering rau lub puab phab ntsa ntawm pwm, tom qab. txias demolding, kom tau ntau yam khoom hollow. Ua ntej ntawm tag nrho cov, cov yas molten nyob rau hauv lub pwm, nyob rau hauv lub siab ntawm compressed cua, cov yas yuav raug tshuab kom nruj nreem kaw rau pwm nto, los ntawm cov punch, demolded rau hauv cov khoom. Tshuab moulding feem ntau yog siv rau kev tsim khoom ntawm ntau hom hollow ntim ntim, tab sis kuj tsim cov zaj duab xis, ntawv thiab lwm yam. Cov kev xav tau zoo ntawm tshuab molding thickness yuav tsum sib npaug, qhov hnyav kom zoo ib yam, xim kom zoo ib yam, qhov saum npoo yuav tsum du, ua kom tiav.
●Qhov zoo: tuaj yeem tsim cov khoom loj lossis ntau txheej hollow. Cov khoom siv sib npaug sib npaug thiab cov phab ntsa thickness zoo ib yam.
● Qhov tsis zoo: tus nqi pwm siab dua. Ntau lawm ceev kuj qeeb.
Txiav tawm moulding
Extrusion tseem hu ua extrusion, nws yog ib txoj hauv kev tseem ceeb ntawm thermoplastic molding. Extrusion molding feem ntau yog siv rau cov thermoplastics. Qhov no yog molten plasticized yas, extruded los ntawm lub taub hau ntawm lub tshuab extrusion ntawm lub qhov ncauj ntawm pwm qhov sib txawv, thiab cov duab profile nrog lub qhov ncauj ntawm cov duab zoo sib xws. Feem ntau ntawm kev tsim cov ntawv, yeeb nkab, pas nrig, hlau, profile, thiab lwm yam.
Zoo: Kev tsim kev lag luam siab, haum rau kev tsim khoom txuas ntxiv. Tuaj yeem tsim ntau yam ntawm cov duab hla ntawm cov khoom.
● Disadvantages: Cov kev xav tau siab dua rau qhov fluidity ntawm cov khoom. Kev tswj cov khoom tuab thiab qhov loj me yog qhov nyuaj dua.
