Yuav Ua Li Cas Kho PET Yas Txhaj Moulding Parameters?

Jan 20, 2026

Tso lus

PET yas txhaj tshuaj molding yog txheej txheem rhiab heev rau cov txheej txheem tsis; txawm tias me ntsis sib txawv ntawm txhua qhov kev ntsuas tuaj yeem ua rau tag nrho cov khoom lag luam tsis raug. Tag nrho cov txheej txheem kaw - voj voog pib nrog kev ziab thiab xa cov ntaub ntawv PET. Precisely metered, qhuav PET pellets yog pub rau hauv kev txhaj tshuaj molding tshuab hopper. Cov tshuab tshwj xeeb PET servo txhaj tshuaj molding tshuab feem ntau yog siv, nrog cov ntsia hlau tsim los rau qis shear thiab ntiav grooves los tiv thaiv ntau shear kub los ntawm degrading cov khoom raw molecules. Kev tswj cov txheej txheem tsis zoo rau PET yas txhaj tshuaj molding feem ntau yog nyob ntawm plaub lub tshuab: kub, siab, ceev, thiab sijhawm.

PET plastic injection molding

Kev tswj qhov kub thiab txias yog qhov tseem ceeb. Nws tau muab faib ua ob peb theem: lub thoob qhov kub thiab txias yuav tsum tau gradient kom meej -nce los ntawm sab nraum qab mus rau pem hauv ntej (los ntawm cov khoom noj rau lub nozzle), feem ntau nyob rau hauv thaj tsam ntawm 260-290℃. Qhov kub ntau dhau ua rau thermal degradation, ua rau acetaldehyde (AA), cuam tshuam rau cov dej haus saj; Qhov kub tsis txaus ua rau cov plasticization tsis zoo thiab tsis zoo melt flowability. Lub nozzle kub xav tau kev ywj pheej thiab meej tswj kom tsis txhob poob dej. PET preform pwm kub, tshwj xeeb tshaj yog cov dej txias ntawm cov cores thiab kab noj hniav, yog qhov tseem ceeb rau kev txiav txim siab crystallinity thiab zoo li tus PET preforms. Qhov kub ntawm cov dej txias yuav tsum tau khaws cia ntawm qhov kub thiab txias (feem ntau 10-18 degree) kom ua kom txias sai thiab ua kom muaj zog ntawm PET preforms, tag nrho solidified ua ntej ejection.

 

Kev txhaj tshuaj siab thiab kev tswj ceev ncaj qha cuam tshuam rau yaj sau tus cwj pwm. Kev txhaj tshuaj siab yog teem raws li cov yam ntxwv xws li qhov hnyav preform, lub caj dab loj, thiab lwm yam kom ntseeg tau tias cov yaj ua rau cov kab noj hniav tsis ua rau flash lossis ntau dhau kev ntxhov siab. Kev txhaj tshuaj ceev yog feem ntau tswj nyob rau hauv qeeb- nrawm- qauv qeeb: qeeb pib theem kom tshem tawm cua thiab tiv thaiv huab cua; siab- ceev ntim hauv nruab nrab kom ntseeg tau tias qhov ntsuas kub tsis sib xws ntawm cov yaj hauv pem hauv ntej thiab tsis txhob muaj cov cim khiav txias; thiab qhov kawg deceleration los tiv thaiv overfilling thiab ejection. Tuav lub siab thiab lub sijhawm teeb tsa kom them nyiaj rau cov dej txias txias, tiv thaiv cov cim shrinkage thiab voids, tab sis kev tuav ntau dhau ua rau muaj kev ntxhov siab sab hauv. Lub sijhawm tswj hwm suav nrog lub sijhawm txhaj tshuaj, lub sijhawm tuav, lub sijhawm txias, thiab lub sijhawm mus ncig. Lub sij hawm txias rau feem ntau ntawm lub voj voog thiab yuav tsum xyuas kom meej tias lub preform lub hauv paus txheej yog tag nrho solidified ua ntej ejection.

PET plastic injection molding

PET yas txhaj tshuaj molding tsis yog ib qho kev sib txuas, dynamically balanced system. PET servo txhaj tshuaj molding tshuab txais PLC kaw - voj tswj qhov system los saib xyuas thiab kho cov kev ntsuas no hauv lub sijhawm. Nws ua kom paub tseeb tias txhua tus PET preform muaj qhov hnyav, qhov loj me, thiab sab hauv zoo nyob rau hauv loj - ntim, ntev - voj voog ntau lawm.