PP (polypropylene) yog ib qho ntawm cov khoom siv dav siv hauv cov txheej txheem thermoforming. Kev tsim thiab hloov cov txheej txheem ntawm nws cov pwm ncaj qha cuam tshuam rau cov khoom zoo, kev ua tau zoo, thiab cov khoom siv lifespan. Raws li kev paub dhau los hauv kev tsim cov khoom siv hauv tsheb thiab cov khoom siv hauv tsev, cov kab lus no tau qhia txog cov qauv tsim thiab cov txheej txheem hloov pauv rau PP thermoforming pwm, muab kev lag luam nrog cov lus qhia ua haujlwm.
Core Requirements yuav tsum muaj rau PP Material Properties hauv Mould Design
1.Flowability Control thiab Gating System Tsim
Polypropylene melt flow index siab, yooj yim rau flash thiab ntws hauv nyias- cov phab ntsa. Kev tsim pwm yuav tsum ua raws li cov hauv qab no:
Gate Location Optimization: Zam lub rooj vag ncaj nraim thiab muab qhov tseem ceeb rau cov rooj vag taw tes lossis cov rooj vag hauv nkoj kom txo tau cov kev taw qhia kev ntxhov siab los ntawm kev cuam tshuam yaj. Piv txwv li, lub tsheb dashboard pwm siv ntau- taw tes hauv qab rooj vag los tiv thaiv cov kab txuas los ntawm kev mus txog qhov chaw ua haujlwm tseem ceeb, nce cov khoom lag luam tawm mus rau 98%.
Khiav Qhov Loj Matching: Txoj kab uas hla tseem ceeb yuav tsum tau tswj ntawm 4 thiab 7 hli, thiab qhov tob tob tob yuav tsum yog 1.5 npaug ntawm txoj kab uas hla ntawm qhov ntws los xyuas kom meej qhov ntim ntawm cov yaj. Lub sij hawm sau tuaj yeem raug txo los ntawm 22% los ntawm kev ua kom zoo rau kev sib tw khiav.
2.Tseem tswj qhov system tsim
Pwm kub yog qhov tseem ceeb parameter los tswj PP crystallinity:
Zoned Temperature Control Design: Core kub yuav tsum yog 5-10℃hauv qab kab noj hniav kub kom tiv thaiv cov khoom warping. Cov pwm siv kho mob tau txais kev ywj pheej ntawm kev tswj xyuas qhov kub thiab txias los xyuas kom meej tias cov khoom lag luam tsis raug tswj tsis pub dhau ± 0.05 mmWave.
Cov dej txias channel layout: Dej channel txoj kab uas hla Ntau dua los yog sib npaug li 8 hli, khaws cia ntawm 1.5 npaug ntawm txoj kab uas hla ntawm cov kab noj hniav kom ua kom txias txias. Lub thawv ntim pwm uas simulation optimization ntawm cov dej kom txo tau lub sij hawm txias los ntawm 18 vib nas this mus rau 12 vib nas this.
3. Exhaust System Design
PP yaj muaj viscosity tsawg thiab yuav tsum muaj cov qauv tso tawm txaus:
Cov pa tawm qhov ntev: 0.02-0.05mm sib sib zog nqus, 3-5mm dav, sib npaug faib raws qhov sib cais. Cov pwm sab hauv txo qhov kub hnyiab los ntawm 3 feem pua rau 0.2 feem pua los ntawm kev ua kom cov pa tawm grooves.
Lub tshuab nqus tsev-pab pa tawm: Rau cov kab noj hniav sib sib zog nqus, cov kab noj hniav tuaj yeem raug tshem tawm sai sai los ntawm lub tshuab nqus tsev twj tso kua mis. Cov pa hluav taws xob saum npoo yog txo los ntawm 90% tom qab siv cov txheej txheem no hauv lub tank loj tuag.
Standardized Pwm Hloov Txheej Txheem (nrog hydraulic tuag kaw qhov system ua piv txwv)
Theem 1: Kev npaj rau kev hloov pwm (kwv yees li 30 feeb)
Kev lees paub ntawm Equipment Status:
Hloov mus rau "Hloov Kho" thiab dai "Cov Khoom Siv Hauv Kev Kho" kos npe ceeb toom.
Pib dua lub hydraulic system siab mus rau xoom thiab kaw lub compressed cua peb - txoj kev inlet valve.
Cov pwm kub ntsuas yog siv lub ntsuas kub infrared, thiab yog tias qhov kub siab tshaj 80 degree, qhib lub tshuab dej txias kom yuam kom txias.
Cov cuab yeej siv thiab kev npaj khoom siv:
Cov cuab yeej nqa tshwj xeeb: Tshawb xyuas lub nplhaib ntsia hlau qhov tob Ntau dua lossis sib npaug ntawm 1.5 npaug ntawm txoj kab uas hla, cov hlua hlau rated load Ntau dua lossis sib npaug li 1.5 npaug pwm qhov hnyav.
Lub nplhaib txoj hauj lwm: kam rau ua ± 0.02mm, ntsia los ntawm peb - taw tes tiv tauj.
Consumables: Thermal grease tshaj 300 degree, xeb resistant roj rau GB / T 11143 tus qauv.
Pwm Technical Parameter Verification:
Xyuas kom tseeb tias cov pwm tuab phim cov cuab yeej pwm hloov kho ntau yam.
Txheeb xyuas qhov ncaj ncees ntawm qhov sib txuas dej txias thiab kub -kab kab sib txuas.
Txheeb xyuas qhov sealing ntawm cov tubing seams ntawm cov tub ntxhais extractor.
Theem 2: Kev tshem tawm cov pwm qub (kwv yees li 45 feeb)
Kev ntsuas kev nyab xeeb:
Cov neeg ua haujlwm hnav cov hnab looj tes tiv thaiv thiab cov kaus mom kev nyab xeeb thiab siv cov xauv liab kev nyab xeeb kom ntseeg tau tias lub platform pwm ruaj ntseg.
Muab cov roj ntim cov tais tso rau hauv cov pwm kom tsis txhob muaj cov roj hydraulic seem ntawm cov khoom siv.
Standardized Disassembly txheej txheem:
Hydraulic System Sib cais: Ua ntej, kaw cov khoom siv cua, tom qab ntawd maj mam tig lub hydraulic txuas mus rau qhov chaw thib ob thiab saib lub ntsuas qhov ntsuas siab ruaj khov ntawm tsawg dua 0.5MPa.
Tshem tawm cov ntsia hlau tuag: Loosen ntsia hlau diagonally nrog torque ciaj ntswj 50-300N·m) tswj tus nqi torque mus rau 80% ntawm tus nqi tus qauv.
Kev ua haujlwm nqa: Ob chav hlau hlua plaub- taw tes nqa txoj kev yog siv los tswj cov pwm qib qis dua lossis sib npaug li 0.05mm / m.
Theem 3: Kev Txhim Kho Pwm Tshiab (kwv yees li 60 feeb)
Precise Positioning Installation: siv lub nplhaib muab tso rau hauv cov khoom siv hauv paus nrog qhov sib txawv ntawm qhov nruab nrab tsawg dua lossis sib npaug li 0.1 hli / 100mm.
Kev Txhim Kho Cov Phaj Siab: Cov phaj siab hydraulic xav tau ob lub phaj siab ntxiv. Screw insertion qhov tob Ntau dua los yog sib npaug li 1.5 npaug ntawm txoj kab uas hla
Kab rov tav calibration: Calibration siv lub leveler (qhov tseeb 0.02mm / m) nrog kev tswj yuam kev hauv 0.05mm
Kev sib txuas ntawm qhov system thiab debugging:
Txias qhov system: Cov dej yog muab ua ntej muab hluav taws xob los tiv thaiv cov yeeb nkab cua sov los ntawm kev laus
Core tensioning mechanism: tom qab kev sib txuas rau cov yeeb nkab roj, kev sim ua haujlwm tau ua kom paub tseeb tias cov pa tawm -dawb thiab synchronous raug tsawg dua lossis sib npaug ntawm 0.02mm
Pwm tswj qhov kub thiab txias: Qhov kub ntawm cov khoom siv crystalline PP yog tswj ntawm 80-120℃los ntawm cov txheej txheem cua sov (nce 20℃txhua 30 feeb).
Theem 4: Thawj daim tshuaj ntsuam xyuas thiab sau cov ntaub ntawv (kwv yees li 30 feeb)
Qhov tseem ceeb ntawm qhov ntsuas:
- Parting kab flash thickness Tsawg dua los yog sib npaug rau 0.02mm
- Ejection mark indentation Tsawg dua lossis sib npaug ntawm 0.05mm
- Dimensional stability CPK Ntau dua lossis sib npaug rau 1.33
Txheej txheem cov ntaub ntawv kaw:
Sau "Mould Change Record Form, nrog rau cov neeg ua haujlwm, cov sijhawm ua haujlwm, kev tsis txaus ntseeg, thiab lwm yam.
Cov ntaub ntawv pwm kub nkhaus thiab siab hloov cov ntaub ntawv thiab tsim cov ntaub ntawv kho mob cov cuab yeej.
INTRODUCTION Elements of Safe Operating Procedures
High voltage system tiv thaiv:
• Xyuas kom tseeb tias lub siab yog xoom ua ntej ua haujlwm hydraulic system.
* Siv cov ntsaws tshwj xeeb los tiv thaiv cov roj txaws thaum hloov cov khoom siv hydraulic.
Kev Tiv Thaiv Thaum Kub Kub:
* Hnav thaum tshav kub kub- hnab looj tes tiv thaiv thaum pwm kub siab tshaj 60℃C.
* Siv ntev -cov cuab yeej tuav thiab tswj qhov kev ncua deb thaum ntxuav cov cua sov.
Mechanical Protection Requirements:
* Txhim kho npog ntawm qhov txav ntawm qhov tuag.
* Tsis txhob muab koj txhais tes rau hauv pwm kaw qhov chaw thaum lub sij hawm debugging.
Los ntawm cov txheej txheem pwm tsim thiab cov txheej txheem hloov pauv, lub tuam txhab tuaj yeem paub txog kev ua haujlwm zoo thiab ruaj khov ntawm PP thermoforming ntau lawm. Cov ntaub ntawv qhia tias kev ua haujlwm tau zoo tuaj yeem txo cov khoom tsis raug ntawm 67% thiab txhim kho tag nrho cov cuab yeej siv tau los ntawm 35%. Nws raug pom zoo tias kev ntsuas kev txawj ntse ntawm cov neeg ua haujlwm yuav tsum ua txhua lub hlis twg thiab cov qauv kev ua haujlwm yuav tsum tau ua kom zoo dua qub kom tau raws li cov kev xav tau ntawm cov ntaub ntawv tshiab thiab cov txheej txheem.
