Kev Tiv Thaiv Nozzle Drooling: Kub Sib Tw Txoj Cai ntawm Kub Khiav Nozzle rhaub
Nozzle drooling yog ib qho classic thiab teeb meem tsis xws luag hauv kev txhaj tshuaj molding ntau lawm, xa mus rau molten yas dripping los ntawm nozzle qhov hluav taws xob tom qab qhib pwm. Qhov teeb meem ua rau cov khoom pov tseg, pwm paug thiab cov khoom tom qab burrs, cuam tshuam rau kev ua haujlwm tas li. Feem ntau qhov ua txhaum ntawm qhov dej yog tshwm sim los ntawm qhov tsis sib xws ntawm lub tshuab hluav taws xob kub tsis sib haum thiab tsis tsim nyog them nyiaj kub, tsis yog cov khoom siv viscosity. Nozzle heaters dais cov hauj lwm sib npaug ntawm qhov hluav taws xob ntawm cov chaw khiav dej num, thiab kev tswj qhov kub thiab txias kom zoo tiv thaiv kev hloov pauv ntxov ntxov. Kev ua haujlwm ruaj khov ntawm lub tshuab ua kom sov ua haujlwm koom tes nrog kev ntsuas ntsuas kub ntsuas kom paub txog xoom-drooling cov qauv tsim khoom.
Cov cheeb tsam nozzle muaj cov yam ntxwv tshwj xeeb ntawm cov cua kub dissipation txawv ntawm thaj chaw manifold. Raws li tsuas yog lub qhov hluav taws xob ntawm lub tshuab hluav taws xob kub khiav, cov nozzles ncaj qha sib cuag nrog cov huab cua puag ncig thiab pwm qhov chaw, ua rau kom kub poob sai dua thiab hloov pauv kub ntau dua. Kev teeb tsa tsis tsim nyog nozzle tau yooj yim ua rau ob lub xeev huab cua: cov cua kub ntau dhau ua rau qis qis viscosity thiab ntuj drooling, thaum cov cua kub tsis txaus ua rau cov khoom siv hluav taws xob txias thiab lub nozzle thaiv. Qhov sib npaug ntawm qhov kub thiab txias yog qhov tseem ceeb ntawm kev tiv thaiv drooling.
Ordinary nozzle heaters tsis tuaj yeem tsim qhov hluav taws xob kub sib npaug. Conventional small heaters have uneven power density and large thermal inertia, unable to respond quickly to nozzle heat dissipation changes. Thaum lub sij hawm qhib pwm, nozzle kub floats random, ua melt fluidity uncontrolled. Thermocouple ib zaug - point detection tsis tuaj yeem kho thermal inertia yuam kev ntawm cov cua sov qis, ua rau muaj teeb meem tsis tu ncua uas tsis tuaj yeem daws tau los ntawm kev hloov pauv ib leeg.
Cov kws tshaj lij kub khiav nozzle tso cua sov kom paub tseeb qhov hluav taws xob kub them nyiaj. Compact uniform winding qauv ua kom muaj zog thiab ruaj khov thaum tshav kub kub tso tawm ntawm nozzle txoj hauj lwm, ua rau tiag tiag -lub sij hawm kub poob los ntawm huab cua convection thiab pwm. Reasonable power density design maintains melt temperature in the optimal viscosity window, ensuring sufficient fluidity during injection and proper viscosity increase during mold opening intervals to prevent dripping.
Tsawg thermal inertia qauv ua tiav cov lus teb ceev ceev. Cov cua kub zoo thiab txias rhiab heev ua rau nozzle kub hloov synchronously nrog ntau lawm ua, tsis txhob kub lag thiab overshoot. Tsis muaj cov cua kub ntau dhau ntawm qhov hluav taws xob, qhov tseem ceeb tshem tawm cov kev mob tshwm sim los ntawm cov cua sov seem.
Qhov ntsuas kub ntsuas qhov ntsuas qhov ntsuas qhov ntsuas tau ua kom ntseeg tau ntev -lub sij hawm drooling tiv thaiv cov nyhuv. Independent nozzle thermocouple soj ntsuam captures me me qhov hluav taws xob kub hloov nyob rau hauv lub sij hawm ntawm lub sij hawm, siv micro fais fab hloov kom stabilize qhov kub thiab txias. Kaw -Loop tswj tswj qhov hluav taws xob zoo ib yam ntawm lub xeev thermal nyob rau hauv ntau lub voj voog ntau lawm, ua kom daws tau qhov tsis sib xws ntawm cov dej tsis zoo.
Rau kev txhaj tshuaj molding yuav tsum tau huv pwm qhov chaw thiab kev ruaj khov ruaj khov, sib txuam nozzle rhaub teeb tsa thiab cov thermocouple qhov ntsuas kub ntsuas kub muab cov kev daws teeb meem txhim khu kev qha rau drooling tswj thiab kev txhim kho kev tsim khoom.
