12V Cartridge rhaub hauv 3D Printing thiab Additive Manufacturing World
Kev loj hlob tawg ntawm desktop thiab kev lag luam 3D luam ntawv tau ua rau lub siab txo qis 12V cartridge rhaub rau hauv qhov tsom teeb zoo li tsis tau ua dhau los. Taug kev mus rau hauv txhua qhov chaw tsim khoom, tsev kawm ntawv lab, lossis cov chaw tsim khoom tsim khoom tsim khoom thiab koj yuav luag yuav pom lub tshuab hluav taws xob cylindrical me me nias rau hauv lub tshuab cua sov aluminium ntawm lub plawv ntawm lub tshuab luam ntawv fused deposition (FDM) . Los ntawm kev nkag-theem cov tshuab xws li Ender-3 mus rau siab-kawg kev lag luam tshuab luam ntawv PEEK rau aerospace qhov chaw, ntau lub tshuab luam ntawv-tshwj xeeb tshaj yog cov tshuab luam ntawv rau kev nyab xeeb, txav tau yooj yim, thiab qis-voltage operation-rely on 12V cartridge heaters to transform solid filament to precise molten flow.
Lub luag hauj lwm ntawm lub rhaub yog deceptively yooj yim tab sis lub hom phiaj - tseem ceeb. Nws yuav tsum nce qhov kub ntawm -kawg kub ntawm ambient mus rau 200℃rau PLA los yog 400℃rau siab-kub polymers nyob rau hauv 60 vib nas this, ces tuav qhov setpoint nyob rau hauv ± 1℃thaum lub nozzle txav ntawm 60-150 mm / s. Ib qho kev tsis sib haum xeeb ua rau txoj hlua, kev sib hloov, txheej hloov, lossis ua tiav cov ntawv luam tsis tiav. Thaum lub tshuab luam ntawv mam li nco dheev qhia tias "Tshav kub tsis ua hauj lwm," "Tsem qis dhau," los yog siv mus tas li kom ncav cuag lub hom phiaj, 12V cartridge rhaub feem ntau yog thawj cov kws tshaj lij tshuaj xyuas.
Cov cuab yeej kuaj xyuas sai thiab txhim khu kev qha yog txhua qhov digital multimeter. Siv Ohm Txoj Cai, qhov txias tsis kam ntawm lub tshuab cua sov tuaj yeem suav ncaj qha:
\\[ R=\\frac{V^2}{P} \\]
Rau tus qauv 40 W, 12 V chav tsev feem ntau pom nyob rau hauv kub kawg, qhov kev cia siab kuj yog:
\\[ R=\\frac{12^2}{40}=\\frac{144}{40}=3.6\\ \\Omega \\]
Kev nyeem ntawv ntawm kev ua haujlwm tsis kawg (qhib Circuit Court) txhais tau hais tias cov nickel sab hauv -chrome coil tau kub hnyiab tawm- feem ntau los ntawm qhov tsis zoo los yog kub dhau. Kev nyeem ntawv qis dua li qhov xav tau (lossis xoom) qhia tau hais tias qhov luv luv, feem ntau tshwm sim los ntawm kev ya raws lossis kev puas tsuaj rau MgO rwb thaiv tsev. Hauv kev xyaum, cov kws tshaj lij ntsuas ntawm chav tsev kub vim tias kev tiv thaiv nce li 10-15% thaum kub.
Tshaj li qhov tsis ua hauj lwm tam sim no, ntau qhov kev ua tau zoo hloov pauv qhov txawv qhov zoo 12V cartridge rhaub los ntawm cov uas ua rau muaj kev ntxhov siab tsis kawg:
• Thermal Profileing. Feem ntau ntawm kev lag luam- cov cua kub cua sov siv cov cua kub tsis sib xws, tsim kom muaj qhov kub thiab txias me ntsis: qhov nruab nrab ntawm daim cartridge khiav kub dua li qhov kawg uas cov cua sov ua rau cov cua txias thiab cov xov hlau. Rau kev thov cov ntawv thov- siab- luam ntawv ceev, lub taub loj loj, lossis engineering- qib filaments- cov tuam txhab zoo tshaj plaws muab zoned- winding cartridges nrog qhov sib piv xws li 1.3: 1: 1.3 (siab dua ntawm ob qho kawg). Qhov no them nyiaj rau qhov kawg poob thiab xa tawm qhov kub thiab txias qhov profile thoob plaws tag nrho cov cua sov ntev, kom ntseeg tau tias cov viscosity zoo ib yam ntawm lub caj pas nozzle. Qhov sib txawv tshwm sim tam sim ntawd hauv kev luam ntawv zoo: cov kaum ntse ntse, blobs tsawg dua, thiab ntws ruaj khov ntawm 200 mm / s+.
• Thermistor (los yog PT100) Muab tso rau. Lub tshuab cua sov qhov kev ua tau zoo tsuas yog zoo li nws qhov ntsuas kub tawm tswv yim. Lub sensor yuav tsum zaum hauv ib lub qhov drilled kom ze li sai tau rau lub nozzle -zoo tshaj nyob rau hauv 3-5 mm- tseem tseem ntes qhov tseeb thaiv qhov kub thiab txias. Yog tias muab tso rau deb dhau ntawm lub rhaub lossis ze rau lub dab dej kub, thermal lag ua rau PID maub los overshoot lossis oscillate wildly. Nyob rau hauv firmware xws li Marlin los yog Klipper, tsis zoo tuned PID qhov tseem ceeb (P, I, D tsis tu ncua) nthuav qhov teeb meem, ua kom kub viav vias ntawm ± 5-10℃uas ua rau siab siab - daws teeb meem luam tawm lossis degrade PEEK crystallinity.
Cov kev coj ua zoo tshaj ntxiv txhawb kev ntseeg siab hauv kev tsim khoom ntxiv. Lub diametral clearance ntawm 0.001–0.002 nyob rau hauv (0.025–0.05 mm) ntawm lub rhaub thiab thaiv yog qhov tseem ceeb; ntau tus neeg siv siv cov yeeb yaj kiab nyias nyias ntawm siab -kub thermal muab tshuaj txhuam kom tshem tawm cov qhov khoob ntawm cov huab cua. Watt ceev yog feem ntau khaws cia ntawm 15-25 W / in² kom sib npaug ntawm cov cua kub ceev- nrog rau lub neej ntev nyob rau hauv cov khoom me me. Tshaj -sizing wattage (piv txwv li, 60 W hauv qhov chaw 20 W) pheej hmoo hlawv lub rhaub lossis melting lub block aluminium yog tias lub thermistor tsis ua haujlwm.
Hauv kev teeb tsa kev lag luam-loj- cov tshuab luam ntawv loj, pellet extruders, lossis ntau- cov khoom siv- 12V cov cua sov feem ntau ua ke nrog MOSFET- tswj cov boards lossis cov khoom ruaj khov- lub xeev relays muaj peev xwm tuav 10-15 A tas mus li. Lawv qhov qis- qhov hluav taws xob tsis zoo tshem tawm qhov xav tau siab -voltage kev nyab xeeb interlocks, ua rau lawv zoo tagnrho rau cov chav kawm ib puag ncig, mobile print farms, thiab roj teeb-backed field printers.
Cov lus qhia rau kev tsim khoom siv ntxiv yog qhov tseeb: 12V cartridge rhaub yog ntau tshaj li qhov yooj yim resistive element-nws yog lub cav thermal precision. Xaiv qhov tseeb wattage thiab ntev, insisting ntawm ib tug snug remed haum, siv zoned windings thaum xav tau, tso lub sensor zoo, thiab tuning PID voj ua ke txiav txim seb lub tshuab luam ntawv tsim lub tsev khaws puav pheej- zoo prototypes los yog tsis muaj seem. Vim hais tias ntawm lawv qhov loj me, kev nyab xeeb, thiab kev sib raug zoo nrog cov khoom siv hluav taws xob 12 V, cov cua sov no tseem yog qhov zoo tshaj plaws rau kev lag luam uas txuas ntxiv thawb cov ciam teb ntawm kev ceev, cov khoom siv ntau yam, thiab kev nkag mus tau yooj yim. Thaum txhua yam zoo sib xws, 12V cartridge rhaub ntsiag to muab qhov rov ua tau, siab -kev ncaj ncees melting uas hloov cov qauv tsim rau hauv lub cev muaj tiag.
