1.Design for Manufacturability ntawm PCBA
Kev tsim khoom tsim ntawm PCBA feem ntau daws qhov teeb meem ntawm kev sib dhos, thiab lub hom phiaj yog kom ua tiav txoj kev luv tshaj plaws, qhov siab tshaj plaws soldering dhau tus nqi, thiab tus nqi qis tshaj plaws.Cov ntsiab lus tsim feem ntau suav nrog: txheej txheem kev tsim qauv, cov qauv tsim qauv ntawm lub rooj sib dhos, cov ntaub qhwv thiab cov npog ntsej muag tsim (xws li tus nqi dhau los), kev sib dhos thermal tsim, kev sib dhos tsim kev ntseeg tau, thiab lwm yam.
(1)PCBA Manufacturability
Lub manufacturability tsim ntawm PCB tsom rau "manufacturability", thiab cov ntsiab lus tsim muaj xws li phaj xaiv, nias-haum qauv, annular nplhaib tsim, solder daim npog qhov ncauj tsim, kho nto thiab vaj huam sib luag tsim, thiab lwm yam. lub PCB.Txwv tsis pub los ntawm txoj kev ua thiab muaj peev xwm, qhov tsawg kawg nkaus kab dav thiab kab sib nrug, qhov tsawg kawg nkaus txoj kab uas hla, qhov tsawg kawg nkaus lub nplhaib nplhaib dav, thiab qhov tsawg kawg nkaus qhov sib txawv ntawm lub qhov ncauj qhov ntswg yuav tsum ua raws li PCB kev muaj peev xwm.Cov txheej txheem tsim txheej txheej thiab lamination qauv yuav tsum ua raws li PCB ua tshuab.Yog li ntawd, kev tsim khoom tsim ntawm PCB tsom mus rau kev ua kom tau raws li cov txheej txheem muaj peev xwm ntawm PCB lub Hoobkas, thiab nkag siab txog cov txheej txheem tsim khoom PCB, cov txheej txheem ntws thiab cov txheej txheem muaj peev xwm yog lub hauv paus rau kev siv cov txheej txheem tsim.
(2) Kev sib dhos ntawm PCBA
PCBA qhov kev sib dhos tsim tau tsom mus rau "kev sib sau ua ke", uas yog, tsim kom muaj kev ruaj khov thiab muaj zog ua haujlwm, thiab ua kom tau zoo, ua haujlwm zoo thiab tus nqi qis.Cov ntsiab lus ntawm kev tsim muaj xws li pob xaiv, pad tsim, sib dhos txoj kev (los yog txheej txheem kev tsim), kev tivthaiv layout, steel mesh tsim, thiab lwm yam. Tag nrho cov kev tsim qauv no yog raws li kev siv vuam ntau dua, kev tsim khoom ntau dua, thiab cov nqi tsim khoom qis dua.
2. Laser soldering txheej txheem
Laser soldering tshuab yog irradiate lub ncoo cheeb tsam nrog ib tug precisely tsom laser beam chaw.Tom qab nqus tau lub zog laser, thaj tsam solder heats sai sai rau yaj lub solder, thiab tom qab ntawd nres lub laser irradiation kom txias lub solder cheeb tsam thiab solidify lub solder los ua ib tug solder sib koom.Lub vuam cheeb tsam yog nyob rau hauv lub zos rhuab, thiab lwm qhov chaw ntawm tag nrho cov sib dhos yog tsis tshua muaj cuam tshuam los ntawm tshav kub.Lub sijhawm laser irradiation thaum lub sij hawm vuam feem ntau tsuas yog ob peb puas milliseconds.Kev sib cuag tsis sib cuag, tsis muaj kev ntxhov siab ntawm lub ncoo, siv qhov chaw siab dua.
Laser vuam yog tsim rau xaiv reflow soldering txheej txheem los yog connectors siv tin hlau.Yog hais tias nws yog ib qho SMD tivthaiv, koj yuav tsum tau siv cov tshuaj txhuam hniav ua ntej, thiab tom qab ntawd solder.Cov txheej txheem soldering tau muab faib ua ob kauj ruam: ua ntej, cov tshuaj txhuam hniav yuav tsum tau ua kom sov, thiab cov pob qij txha kuj tseem preheated.Tom qab ntawd, cov tshuaj nplaum uas siv rau kev sib txhuam yog yaj tag, thiab cov khoom siv tag nrho ntub cov ntaub qhwv, thaum kawg tsim ib qho kev sib koom ua ke.Siv lub tshuab hluav taws xob laser thiab cov khoom siv kho qhov muag tsom rau vuam, lub zog siab ceev, siab hloov hluav taws xob ua haujlwm, tsis sib cuag welding, solder tuaj yeem muab tshuaj txhuam los yog tin hlau, tshwj xeeb tshaj yog tsim rau vuam cov pob qij txha me me hauv qhov chaw me me lossis cov pob qij txha me me uas tsis muaj zog. , txuag zog.
3.Laser vuam tsim yuav tsum tau rau PCBA
(1) Tsis siv neeg ntau lawm PCBA kis tau tus mob thiab qhov chaw tsim
Rau kev tsim khoom siv hluav taws xob thiab sib dhos, PCB yuav tsum muaj cov cim uas ua raws li qhov chaw kho qhov muag, xws li Mark cov ntsiab lus.Los yog qhov sib piv ntawm lub ncoo yog pom tseeb, thiab lub koob yees duab pom tau qhov chaw.
(2) Cov txheej txheem vuam txiav txim siab cov txheej txheem ntawm cov khoom
Txhua txoj kev vuam muaj nws tus kheej cov kev cai rau kev teeb tsa ntawm cov khoom, thiab cov txheej txheem ntawm cov khoom yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem vuam.Kev tshawb fawb thiab tsim nyog layout tuaj yeem txo cov pob qij txha tsis zoo thiab txo kev siv cov cuab yeej.
(3) Tsim los txhim kho vuam hla dhau tus nqi
Kev sib txuam tsim ntawm ncoo, solder tiv taus, thiab stencil Lub ncoo thiab tus pin qauv txiav txim siab cov duab ntawm cov sib koom ua ke thiab kuj txiav txim siab lub peev xwm nqus molten solder.Kev tsim qauv tsim ntawm lub qhov mounting ua tiav qhov kev nkag mus ntawm tin ntawm 75%.