Raws li peb lub ntsiab ua rau lub sijhawm hloov pauv hauv cov txheej txheem kub khiav (kub tswj qhov system, yaj ntws, thiab cov txheej txheem kev kho tshuab), plaub- kauj ruam txoj hauv kev-}" tshwm sim → cov ntaub ntawv nrhiav tau → spectrum tsom xam → hla -validation" - tuaj yeem siv los ua qhov teeb meem ntawm qhov systematically. Cov teeb meem tswj qhov kub thiab txias feem ntau tshwm sim raws li qhov kub thiab txias oscillations, ntws- cov teeb meem cuam tshuam qhia cov kev hloov pauv raws sij hawm hauv lub sij hawm los yog siab, thiab cov teeb meem ntawm cov txheej txheem feem ntau synchronized nrog pwm lub voj voog ua haujlwm.
I. Kev daws teeb meem raws li qhov ua rau
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Ua rau qeb |
Hom Phenomenon |
Cov Txheej Txheem Tseem Ceeb |
Kev Txiav Txim Ua Ntej |
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Teeb meem kub tswj qhov system |
Kub nkhaus nthuav tawm lub sijhawm overshoot / oscillation (xws li, rov ua dua txhua 3-8 lub voj voog) |
Multi-point thermocouples + FFT spectrum tsom xam |
Kev hloov pauv zaus synchronized nrog PID tswj lub voj voog lossis pwm qhib / kaw ua haujlwm |
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Melt Flow Teeb meem |
Ntau -kab noj hniav ua ntu sib hloov, kev hloov pauv ntawm lub sijhawm |
Pwm kab noj hniav siab sensor + SPC tswj daim ntawv |
Alternating peak pressure in odd and even cavities, filling time difference >5% |
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Teeb meem kev tsim thiab tshuab |
Kev hloov pauv hauv lub sijhawm ntawm cov cim rooj vag, kev co txawv txav thiab suab nrov |
Lub rooj vag cim sib piv + vibration sensor |
Lub voj voog hloov pauv tag sib haum rau ejection/cooling/pould close actions |
Core Logic: Txawm hais tias peb hom teeb meem yuav tshwm sim ua ke, lawv cov zaus tseem ceeb sib txawv. Kev tswj qhov kub thiab txias yog feem ntau 0.1 ~ 1Hz, ntws hloov pauv yog 0.5 ~ 5Hz, thiab cov qauv resonances feem ntau yog concentrated hauv 5 ~ 50Hz. Cov no tuaj yeem sib cais tau zoo los ntawm kev txheeb xyuas spectrum.
II. Kev daws teeb meem cov lus qhia rau txhua yam khoom
1. Kev daws teeb meem kub tswj qhov teeb meem
Tshawb xyuas PID Parameter Matching: Rov qab cov ntaub ntawv keeb kwm los ntawm lub ntsuas kub thiab xyuas seb cov cua sov tso tawm puas muaj qhov hloov pauv raws sijhawm (xws li, caij tsheb kauj vab txhua 60 vib nas this). Yog tias pom lub luag haujlwm tseem ceeb ntawm lub voj voog oscillation, PID yuav tsum tau hloov kho.
Txheeb xyuas qhov ntsuas qhov ntsuas qhov ntsuas: xyuas kom lub ntsuas kub ntsuas qhov ntsuas qhov ntsuas tau zoo tuaj yeem tiv tauj cov phab ntsa ntws ntws, nrog qhov ntsuas qhov ntsuas tsawg dua lossis sib npaug li 10 hli los ntawm cov phab ntsa ntws channel kom tsis txhob tawm tswv yim lag vim huab cua rwb thaiv tsev.
Sib piv Multi-Zone Temperature Consistency: Sau qhov kub ntawm txhua lub nozzle. Yog hais tias qhov kub ntawm qhov sib txawv ntawm cov nozzles uas nyob ib sab tshaj ± 5 degree, nws qhia tau hais tias tsis sib xws ntawm cov cua kub ntsiab lus los yog tsis tsim nyog kub tswj cheeb tsam faib.
2. Kev daws teeb meem Melt Flow
Saib xyuas Cavity Pressure Curve: Txhim kho lub siab sensors nyob rau hauv txhua qhov kab noj hniav thiab saib xyuas qhov siab nce nqes hav thiab ncov ib ntus thaum lub sij hawm txhaws. Yog tias "thawj kab noj hniav ua ntej → kab noj hniav thib ob ua ntej hauv lub voj voog tom ntej," nws qhia tias tsis txaus txaus.
Tshawb xyuas Lub Sijhawm Sau Qhov Sib txawv: Siv Moldflow simulation los kwv yees lub sijhawm sau ntawm txhua qhov kab noj hniav. Yog tias qhov ntsuas qhov sib txawv ntau dua 5%, xyuas qhov sib luag ntawm lub tshuab khiav los yog qhov sib xws ntawm lub qhov rooj qhov ntev.
Ua raws li qis-Speed Holding Pressure Strategy: Thaum cov pwm yog 80% ~ 90% tag nrho, hloov mus rau 10% ~ 20% thawj zaug ceev rau qis - ceev filling. Qhov no ua tau zoo suppresses siab siab peaks nyob rau hauv thawj pwm kab noj hniav thiab ua tiav lub siab tuav.
3. Kev daws teeb meem ntawm cov qauv thiab tshuab:
Ua raws li cov kev hloov pauv raws sij hawm hauv lub rooj vag cov cim: Siv 10 ~ 20 cov qauv ntawm cov khoom pwm tsis tu ncua thiab thaij duab rau kev sib piv ntawm cov kab txiav, gloss, thiab cov kab vuam txoj haujlwm ntawm lub rooj vag. Yog tias tus qauv hloov pauv raws li lub voj voog ejection, nws qhia tias muaj kev cuam tshuam rau kev siv tshuab.
Nthuav cov qauv Resonance zaus: Siv lub vibration sensor los saib xyuas cov neeg kho tshuab kev co thaum lub sijhawm ua haujlwm pwm. Yog tias qhov resonance ncov zoo ib yam nrog qhov cuam tshuam ntawm pwm qhib thiab kaw, xyuas qhov rigidity ntawm kub khiav kev txhawb nqa qauv.
Kev tshuaj xyuas rau Cov Ntsiab Lus Tuag Tuag thiab Kev Tiv Thaiv Kev Txhaum Cai: Tshawb xyuas cov kev hloov pauv ntawm cov ces kaum khiav thiab cov khoom siv txias txias nyob ze ntawm lub rooj vag. Tshem tawm qhov chaw nyob ruaj khov tuaj yeem txo qhov degradation lossis kub lag tshwm sim los ntawm cov khoom siv cua sov ntev.
III. Hla -validation thiab hauv paus ua pov thawj
Sijhawm Series Alignment Method: Kev sib koom ua ke kub, siab, thiab pwm ua haujlwm (piv txwv li, pwm kaw teeb liab) cov ntaub ntawv raws lub sijhawm axis thiab saib seb qhov kev hloov pauv tau nruj me ntsis nrog ib qho kev txiav txim tshwj xeeb.
Isolation Variable Test: kaw lub kaw lus dej txias ib ntus thiab saib seb qhov kev hloov pauv puas tsawg; Qhov no tuaj yeem txiav txim siab seb lawv puas tshwm sim los ntawm kev cuam tshuam ntawm lub sijhawm.
Fourier Transform (FFT) Kev Ntsuam Xyuas: Ua spectral tsom xam ntawm qhov kub thiab txias cov ntaub ntawv kom rho tawm qhov tseem ceeb zaus. Yog hais tias qhov tseem ceeb zaus yog 1.2 Hz thiab phim cov ntsia hlau rotation zaus, nws taw qhia rau uneven plasticization.
Cov Lus Qhia Txog Kev Tsim Kho: Rau siab - yuav tsum tau ua cov kab ntau lawm, nws raug nquahu kom siv ntau- channel cov ntaub ntawv tau txais kev kaw lus ib txhij sau cov ntsuas kub, siab, vibration, thiab cov txheej txheem teeb liab, tsim kom muaj qhov hloov pauv ntiv tes rau kev kuaj mob sai.
