Kev tsim hauv kawm kawm yog li cas muaj feem ntau rau lub sijhawm uas yam khoom tau tsim, tshwj tsis yog vim nws muaj feem rau kev sib thoj hluv, kev pib los ntawm dej nkag mus rau hauv kawm, thiab kev nqa yam khoom tawm tom qab nws nguas. Raw siab los ntawm kev xav xeeb pub rau xyoo nplooj los los ntawm Plastics Engineering Institute, thaum cov neeg tsim kho txhim kho qhov chaw ntawm cov raj khes nkag hluv hluv hauv kawm, lawv tuaj yeem sau lub sijhawm tsim kho rau cov khoom siv rau lub rooj moos li 19%. Cov teeb meem loj tshaj plaws tuaj yeem tshwm nyob thaum ua rau cov duab nrawm zoo li cov ntim dav dav lossis cov kab ncauj ncauj ntev, uas feem ntau ua rau lub sijhawm pom ntev nce tawm li 20% mus rau 40% vim tias cov cheeb tsam no xav tau sijhawm ntxov los nguas zoo. Cov kha kaw tsis zoo siv ib qho teeb meem tshiab, ua rau muaj av nyob hauv kawm thaum pib nkag, uas txiav txim siab rau cov neeg tshawj tso caij tsis pub tso ntau kom khoob kom tsis txhob muaj leej twg.
Cov sijhawm tseem ceeb uas muaj kev daws teeb meem zoo tshaj los ntawm kev txhim kho kev tsim kho rwb:
Sijhawm ntev tuaj yeem tshwm sim kev ntxiag yog tias tsis muaj kev ruaj khov hauv kev sov tsho—ib qhov kev suav xyuas 2024 pom tias kev tshem sijhawm 15% tsim kev ntsuas tsis sib xws 0.12mm rau cov khoom siv rau kev kho mob. Cov neeg tsim kho rwb thiaj xaiv cov kev tsim kho rwb uas muaj kev ruaj khov (nyob rau ~1.5 feeb) thiab kev nyiaj ruaj khov (±2% kev sib txawv) kom tso tseg cov ntxiag thiab txhob muaj kev ntxiag tab sis tseem pab tau muab khoom ntau
Kev tsim kho kev lag luam zoo nyob rau hauv kev tsim kho tshuab ntxig muag yuav cuam tshuam txog sijhawm ntxig thiab qhov xwm txheej ntawm qhov chaw. Kev xaiv cov rooj kub txaus nyob rau qhov chaw txaus nyob tuaj yeem sau hauv qab qhov kub, thiab muaj tswv yim hais tias tau pom tias sijhawm ntxig tau suav qis li 15–20% thaum cov rooj kub raug xaiv txaus nyob rau qhov chaw (Ponemon 2023). Qhov kev xaiv no tuaj yeem sau qis qhov tsim los ntawm kev hloov kho tom qab ntxig, thaum twg kuj tseem nyob ib qhov ntsiab lus tseem ceeb.
Cov rooj sov kub uas tsim los ntawm kev tsim kho tshuab tshiab tuaj yeem txuas ntxiv rau qhov chaw uas muaj form phauj xwm kom sov kub ntau dua li 40% ntau dua li cov rooj sov kub thaub. Cov rooj 3D no tuaj yeem tshuaj xyuas qhov kub nyob rau ±1.5°C nyob rau saum npoo ntawm tshuab ntxig muag, uas yog qhov tseem ceeb rau cov khoom uas muaj kab ntsug nyiag.
Cov nkeeg tshuab tshiab (CFD) tshaj tawm nyob rau hauv kev lag luam tuaj yeem xam qhov kub nrog qhov sai tsawg dua li 5%, uas pab rau tus neeg tsim kho tshuab:
Peb muaj ib qhov kev kawm ntau tshaj plaws hais txog kev sim uas pab kho cov cuab yeej siv hluv hlau rau lub tshuab ntxuav ntxuav tau zoo dua li 28% thaum kheej siv sijhawm ntxuav ntxuav tshuab los ntawm 14 feeb.
Kev ntxuav ntxuav tsis zoo pheej pheej tuaj yeem tsim kev puas tsuaj rau lub ntu, uas tuaj yeem pab kom lub ntu tsis ua haujlwm zoo. Qhov kev kho kom zoo tshaj plaws yog:
| Qhov chaw kho | Optimal Range | Nqes sijhawm ntxuav ntxuav |
|---|---|---|
| Daim kab ntim | 8–12 mm | ±3 feeb sijhawm ntxuav ntxuav |
| Zooj vphau ntxuav ntxuav | 2–5 m/s | 12% kev sib txawv hli |
| Txhaj tshuaj ntawm dej ua hauv paus | ~30°C | 18% kev lwm nce tawg |
Ib chaw tsim khoom rau cov khoom siv rau kev kho mob tau siv kua tsaus zog rau hauv qab tshuaj, thiab tau muaj nyob rau:
Kev txhim kho no tau pab tau 12% ntau dua rau kev tsim khoom thaum tsis tau tsum xa ntau dua.
Lub ntsiab lus ntawm lub ntsej mog muaj qhov chaw nyob yuav txiav txim siab tias tsheb plastik hlwb yuav tuaj li cas ntev los ntawm lub mold cavity thiab tiv thaiv av nyiag hauv. Thaum peb xaiv lub ntsej mog ntawm qhov chaw uas lub qhov rooj tsis ntau, nws yuav txo kev puas tsuaj rau sab hauv uas yog qhov tshauv ntev dua li 15 mus rau 30% ntau dua li cov ntsej mog pib. Cov neeg kho mob tshuaj tshwj xeeb tau suav nyob rau xyoo 2023 uas pom tias no yog qhov tseeb. Rau kev nrhiav qhov chaw zoo tshaj plaws rau cov ntsej mog no, cov model flow siv computer yuav pab tau. Nws pab peb nrhiav qhov chaw uas muaj kev ntev zoo thiab tsis muaj ntau yam tsis zoo hauv qhov chaw tshuav tseg, tab sis tsuas muaj qee yam kev npawb nqe tshuaj txaus siab tshaj plaws nyob rau hauv kev txiav txim siab nyob rau hauv yam khoom tshuav tseg.
Kev tsim qauv tshwj xwm sib npj sib txuas thiab muaj qhov ntsiag tug sib npj sib txuas tua hlo kua tso tseg—qee yam uas feem ntau tshuav rau kev tsim khoob thiab tshuab lom neeg. Qhov rooj tsim khoob rai uas muaj dunder tsis zoo li 22% tshaj qhov tsim khoob trapezoidal rau cov khoom siv zog loj xws li nylon. Ntawm qhov chaw tsim khoob tam sim no feem ntau siv kev tso dej sov nyob hauv qhov rooj tsim khoob kom tshem tawm qhov chaw tso dej nyuaj siab.
Qhov rooj tsim khoob ngu tau ntxiv 8–12 seconds ib lub sijhawm rau kev tso tseg thiab tshuab tawm, tab sis ua haujlwm zoo tshaj rau kev tsim khoob me me. Qhov rooj tsim khoob sov tshem tawm kev puv txwv khoom thiab kev tshuab tawm, tab sis xav tau kev daws teeb meem tshaj tshav—73% ntawm cov neeg tsim khoob loj siv cov nozzle sov thiab muaj qhov chaw tswj tau los tsim khoob PP thiab ABS.
Kev sib txooj ntawm sijhawm tshuab rov qab dua li 0.3 feeb feem ntau sib npaug nrog kev hloov pauv ntawm ±5% ntawm lub khw pheej. Ib qho kws leej coj los siv rau cov khoom sib thooj tshuab sawv cev tau tias, kev siv cov rooj tsis muaj chaw ceev tuaj yeem txo sijhawm rov qab dua li 41% kom compared to standard designs, thaum twg kuj tseem nyob hauv kev tswj hwm khib nyiab txog ISO 20457 standards.
Txoj cim simulation nyob zoo li no txav rau kev kho mob tsim tawm cycle times thaum tsim kho mob xaws tsis tas deb heev txog thaum tom qab tsim kho mob. Thaum saib seb resin dhau los ntawm cov kho mob xaws li cas, nws sov tshaj li cas, thiab qhov twg muaj kev puas tsuaj, cov koom haum kho mob pom cov teeb meem xws li qhov chaw sov tsis ntev lossis qhov chaw uas dej nkhiav hauv. Yog li sim software mold flow xws li nws txo dej nkhiav siv sijhawm los ntawm 40% rau rau daim duab nyuj xywg ib txhis raws li Autodesk qhia tawm tau piav los ntawm xyoo nplooj tsa. Txhob pub tshwm sim teeb meem no ua vor tom qab tsim tawm yuav pheej hmong dua thiab tso cov khoom nrog kev sib txig siab. Cov neeg tsim tshuaj hlau thiab cov neeg tsim tshuaj hlau tuaj muaj feem ntau tshaj plaws nyob rau qhov precision no vim tias tsuas yog qee qhov teeb meem le le kuj tuaj yeem tshwm sim teeb meem loj nyob rau hauv lawv cov khoom.
Siv cov cuab yeej simulation tshiab tam sim no, txoj kev kho tshuaj tuaj yeem sim qhov chaw sawv cev, kev tsim khoob thiab kev tshem tawm ntawm lub tshuab injection molding nyob hauv daim duab virtual, yog li ntawd feem ntau txav tawm ib helf mus rau saum dua ob thirds ntawm cov ntaub ntawv prototype uas muaj ceev. Lub kws tshawb fwb pub tej nqi tshawb nrhiav dhau los xyoo nploij, pom tias cov chaw ua haujlwm siv software simulation tau txuas siab dej ntxos lub sijhawm kho tshuaj rau lub mold - los ntawm li cas uas yuav teem ntau npaum li 12 hli mus rau peb hli xwb rau cov molds siv hauv kev tsim khoom loj siv hauv tsev neeg. Thaum cov tim kho tshuaj sim ntau dua ib puag ncig 20 hom ntawv txiab sib txawv nyob hauv daim duab digital ua ntej, lawv yuav paub zoo dua txog yam khoom txaus siab xws li su temperatures thiab packing pressures ua ntej thaum twg tus neeg tsim tshuaj tsis tau pib siv tshuab.
Ntawm 78% ntsem ntxiv los ntawm cov neeg siv khoom tshuaj tshob kawg nyob rau hauv qab no txhais kom sim tag nrho cov chaw tsim kho mob tshiab—muaj ntau dua 300% dhau los ntawm 2018. qhov kev hlo li no muaj los ntawm cov ntaub ntawv ROI uas pom tias $740k lub hnub npoo li ib lub tshuab los ntawm kev sau nqi tsawg thiab ntev dua los ntawm kev ntim kho (Ponemon 2023).
Thiab tseem muaj cov cuab yeej xws li kev sim kho tshuab conformal tau 92% kev nthuav dav rau cov khoom siv tsawg, tib neeg tsis muaj kev tshwm sim tseem xav tau kev tshawb fawb nyob hauv yos. kev ua haujlwm zoo siv kev sim rau 80–90% ntawm kev txhim kho tab sis tsoj tseg kev test nyob hauv yos rau cov ntsiab lus tseem ceeb xws li shear-induced crystallinity nyob rau hauv semi-crystalline polymers.
Thiab tsim cov ntauj hlua tso, ib yam uas tseem ceeb heev yog qhov nyiag ntawm qhov khoob vim nws muaj kev ntxig siab loj rau lub sijhawm sov. Piv txwv li, cov ntu uas muaj khoob nyiag dua 4mm yuav xav tau sijhawm sov ntau dua li 70% kom compared rau cov uas tsuas muaj 1.5mm khoob nyiag, zoo li hais tias nyob rau hauv cov kev kawm txog thermoplastic molding xyoo no. Lub caij no nyob rau hauv cov lus qhia ntawm thermodynamics. Cov khoob nyiag meej dua tuaj yeem tso siab tshuab ntau dua, yog li lawv xav tau sijhawm ntau dua los sov tag thiab rov tsis muaj qhov khoob poob ua ntej tso tawm. Tom qab ntawd, yog tias khoob nyiag siab dua 1mm, ces yuav muaj teeb meem nyob rau hauv kev pib tso khoob kom raug. Qhov no txhais tau tias tus neeg tso khoob yuav tsum tso ntau dua thiab tso khoob chawg dua kom kom tiav. Nrhiav rau hauv cov ntaub ntawv industry, kev tswj qhov sib txawv ntawm qhov nyiag khoob hauv qhov chaw 25% pheej yig yuav pab khaws sijhawm sib txawv kom nyuaj siab dua li 40%, thiab tseem tshem tawm cov ntawv sau zoo uas tsis zoo ntawm cov ntu tiav.
Kev tsim kho kev txiav txim siab ntawm qhov chaw siv nrog kev sau ua haujlwm yuav tsum tau:
Kev sib xws tuaj yeem txo qhov tsis sib xws ntawm kev nyuaj siab—qeeb tshaj plaws yam uas cuam tshuam rau kev ntxhiav rau cov khoom siv tshuab xwm meej xwm nyiag. Piv txwv li, kev txo qhov thickness ntawm rooj hlwb 30% nyob ze lub nplhaib tau pab txo qhov tsis muaj kev sib xws los ntawm 0.12mm rau cov rooj hlwb tshuab nyob rau hauv kev sim ua haujlwm.
Xov xwm kub2024-04-25
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WishSINO cov khoom lag luam tseem ceeb yog Injection Mould, Kev Tshuaj Xua Khoob, Kev Pab Txuag Ntaub, 3D Printing, Cov Khoom Plastic Injection, IMD injection Moulding, thiab lwm yam.
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