Qhov txawv ntawm AOI thiab SPI20240904 yog dab tsi?
Nkag Siab Txog Kev Tshuaj Xyuas SPI: Ib Qho Tseem Ceeb Rau Kev Tsim Khoom Siv Hluav Taws Xob Txhim Khu Kev Ntseeg Tau
Hauv kev tsim khoom siv hluav taws xob, qhov tseeb thiab kev ntseeg tau yog qhov tseem ceeb tshaj plaws. Surface Mount Technology (SMT) tau hloov pauv kev lag luam, ua rau muaj kev tsim cov khoom siv hluav taws xob me me thiab ua haujlwm tau zoo. Txawm li cas los xij, nrog rau qhov nyuaj ntawm cov circuits thiab cov khoom, kev ua kom zoo thiab kev ua haujlwm ntawm cov khoom sib dhos hluav taws xob no tau dhau los ua qhov nyuaj dua. Qhov no yog qhov uas Solder Paste Inspection (SPI) los ua si. SPI kev tshuaj xyuas yog ib qho txheej txheem tswj xyuas zoo hauv SMT uas pab tswj cov qauv siab hauv kev tsim khoom siv hluav taws xob. Hauv tsab xov xwm no, peb yuav nkag mus rau hauv cov ntsiab lus ntawmKev tshuaj xyuas SPI, nws qhov tseem ceeb, cov txheej txheem, thiab nws qhov cuam tshuam rau qhov zoo ntawm cov khoom siv hluav taws xob.
Kev tshuaj xyuas SPI yog dab tsi?
Kev Tshuaj Xyuas Cov Tshuaj Txhuam Solder (SPI) yog hais txog cov txheej txheem ntawm kev ntsuam xyuas kev siv cov tshuaj txhuam solder rau ntawm lub rooj tsavxwm luam tawm (PCB) ua ntej muab cov khoom siv hluav taws xob tso rau. Cov tshuaj txhuam solder yog kev sib xyaw ntawm cov kua nplaum solder thiab cov hmoov solder uas siv los tsim cov pob qij txha ntawm cov khoom siv hluav taws xob thiab PCB. Kev siv cov tshuaj txhuam solder kom raug yog qhov tseem ceeb vim nws cuam tshuam rau kev ntseeg tau thiab kev ua tau zoo ntawm cov khoom kawg. SPI ua kom ntseeg tau tias cov tshuaj txhuam solder raug siv kom raug, hauv qhov ntau thiab tsawg, thiab hauv qhov chaw raug, txo qhov yuav muaj qhov tsis zoo hauv kev sib dhos zaum kawg.
Vim li cas ho siv SPI kev tshuaj xyuas hauv kev tsim khoom siv hluav taws xob?
1. Kev Tiv Thaiv Qhov Tsis Zoo: SPI ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv qhov tsis zoo xws li cov choj solder, cov solder tsis txaus, thiab cov khoom tsis sib haum. Los ntawm kev kuaj pom cov teeb meem no thaum ntxov hauv cov txheej txheem tsim khoom, SPI pab kom tsis txhob muaj kev ua haujlwm dua thiab kho kim heev.
2. Kev Txhim Kho Kev Ntseeg Tau Zoo Dua: Kev siv cov tshuaj nplaum solder kom raug yog qhov tseem ceeb rau kev tsim cov pob qij txha solder uas tuaj yeem tiv taus kev ntxhov siab thiab kev hloov pauv thermal. SPI ua kom ntseeg tau tias cov tshuaj nplaum solder raug siv sib npaug thiab raug, ua rau muaj kev ntseeg tau zoo dua thiab lub neej ntev ntawm lub cuab yeej hluav taws xob.
3. Kev Siv Nyiaj Zoo: Kev nrhiav thiab daws cov teeb meem ntawm kev siv cov khoom siv solder paste thaum ntxov ntawm kev tsim khoom yog qhov tsim nyog dua li kev daws teeb meem tom qab muab cov khoom tso rau lossis soldered. SPI pab txo qis lub sijhawm tsim khoom thiab txo cov khoom pov tseg.
4. Kev Ua Raws Li Cov Qauv: Ntau lub lag luam xav tau kev ua raws li cov qauv zoo thiab cov cai tshwj xeeb. SPI pab cov chaw tsim khoom ua tau raws li cov qauv no los ntawm kev ua kom ntseeg tau tias daim ntawv thov solder paste ua tau raws li cov lus qhia tsim nyog.
Cov txheej txheem ntawm kev tshuaj xyuas SPI yog dab tsi?
SPI tuaj yeem ua tiav los ntawm ntau txoj kev, txhua txoj muaj nws cov txiaj ntsig thiab kev siv. Cov txheej txheem tseem ceeb suav nrog:
1.Kev Tshuaj Xyuas Qhov Muag Tsis Siv Neeg (AOI)Qhov no yog txoj kev SPI feem ntau, uas siv cov koob yees duab siab thiab cov algorithms ua duab los tshuaj xyuas daim ntawv thov solder paste. AOI systems tuaj yeem ntes tau qhov tsis zoo xws li ntau dhau lossis tsis txaus solder paste, misalignment, thiab bridging. Cov systems no ua haujlwm tau zoo heev thiab tuaj yeem ua tiav ntau ntawm PCBs sai.
2.Kev Tshuaj Xyuas X-rayKev tshuaj xyuas X-ray yog siv los nrhiav cov teeb meem uas tsis pom los ntawm lub qhov muag liab qab lossis los ntawm cov txheej txheem kho qhov muag. Nws yog qhov tshwj xeeb tshaj yog rau kev tshuaj xyuas cov qauv sab hauv ntawm ntau txheej PCBs thiab nrhiav cov teeb meem xws li cov choj solder zais lossis qhov khoob.
3. Kev Tshuaj Xyuas Tes: Txawm hais tias tsis tshua muaj nyob rau hauv kev tsim khoom ntau, kev tshuaj xyuas tes tuaj yeem siv rau hauv kev tsim khoom me me lossis ua ib txoj hauv kev ntxiv. Cov neeg tshuaj xyuas uas tau kawm tiav yuav tshuaj xyuas daim ntawv thov cov tshuaj nplaum thiab siv cov cuab yeej xws li tsom iav kom pom qhov tsis zoo.
4. Kev Tshuaj Xyuas Laser: Cov txheej txheem SPI siv laser siv lasers los ntsuas qhov siab thiab qhov ntim ntawm cov khoom tso rau hauv cov tshuaj nplaum. Txoj kev no muab cov kev ntsuas tseeb thiab zoo rau kev ntes cov teeb meem cuam tshuam nrog qhov ntim thiab kev sib xws.
Cov yam ntxwv tseem ceeb hauv SPI Inspection yog dab tsi?
Muaj ntau yam tseem ceeb uas yuav tsum tau soj ntsuam thaum lub sijhawm SPI tshuaj xyuas kom paub tseeb tias daim ntawv thov solder paste zoo. Cov kev ntsuas no suav nrog:
1. Qhov Ntim ntawm Cov Tshuaj Txhuam Hniav: Tus nqi ntawm cov tshuaj txhuam hniav uas tso rau ntawm txhua daim ntaub yuav tsum nyob hauv cov kev txwv uas tau teev tseg. Cov tshuaj txhuam hniav ntau dhau lossis tsawg dhau tuaj yeem ua rau muaj qhov tsis zoo hauv cov pob qij txha.
2. Qhov tuab ntawm cov tshuaj nplaum: Qhov tuab ntawm cov txheej nplaum yuav tsum sib xws kom ntseeg tau tias cov khoom ntub thiab lo rau zoo. Kev hloov pauv ntawm cov tuab ntawm cov tshuaj nplaum tuaj yeem cuam tshuam rau qhov zoo ntawm cov khoom sib koom ua ke.
3. Kev Sib Tov: Cov tshuaj nplaum yuav tsum tau sib phim kom raug nrog cov PCB pads. Kev sib xyaw tsis sib haum tuaj yeem ua rau cov pob qij txha tsis zoo thiab muaj teeb meem tso cov khoom.
4. Kev Faib Cov Tshuaj Nplaum: Kev faib cov tshuaj nplaum sib npaug thoob plaws PCB yog qhov tseem ceeb rau kev sib txuas tas mus li. SPI systems soj ntsuam qhov sib npaug ntawm kev faib cov tshuaj nplaum kom tiv thaiv cov teeb meem xws li cov tshuaj nplaum tsis sib xws lossis kev sib txuas.
Yuav ua li cas lav qhov zoo ntawm Solder Paste Printing?
● Kev Ceev ntawm Squeegee: Qhov ceev ntawm kev mus ncig ntawm qhov nias txiav txim siab tias muaj pes tsawg lub sijhawm rau cov tshuaj nplaum solder kom "yob" rau hauv qhov apertures ntawm lub stencil thiab mus rau ntawm cov ntaub qhwv ntawm PCB. Feem ntau, qhov chaw teeb tsa ntawm 25 hli ib ob yog siv tab sis qhov no yog qhov sib txawv nyob ntawm qhov loj ntawm cov apertures hauv lub stencil thiab cov tshuaj nplaum solder siv.
● Lub zog niasThaum lub sijhawm luam ntawv, nws yog ib qho tseem ceeb uas yuav tsum siv lub zog txaus thoob plaws tag nrho ntawm cov hniav nias kom ntseeg tau tias daim stencil so huv. Kev nias tsawg dhau tuaj yeem ua rau "smearing" ntawm cov tshuaj nplaum ntawm daim stencil, kev tso tsis zoo, thiab kev hloov pauv tsis tiav rau PCB. Kev nias ntau dhau tuaj yeem ua rau "scooping" ntawm cov tshuaj nplaum los ntawm qhov loj dua, hnav ntau dhau ntawm daim stencil thiab squeegees, thiab yuav ua rau "ntshav" ntawm cov tshuaj nplaum ntawm daim stencil thiab PCB. Ib qho chaw teeb tsa rau lub zog squeegee yog 500 grams ntawm lub zog ib 25 hli ntawm cov hniav squeegee.
● Lub kaum sab xis niasFeem ntau, lub kaum sab xis ntawm lub squeegee yog teem rau 60 ° los ntawm cov tuav uas lawv tau kho rau. Yog tias lub kaum sab xis nce ntxiv nws tuaj yeem ua rau "scooping" ntawm lub tuav paste los ntawm lub stencil apertures thiab yog li tsawg dua solder paste yuav tsum tau tso. Yog tias lub kaum sab xis txo qis, nws tuaj yeem ua rau cov seem ntawm solder paste yuav tsum tau tso rau ntawm stencil tom qab qhov nias tau ua tiav kev luam ntawv.
● Kev Ceev ntawm Kev Sib Cais StencilQhov no yog qhov ceev uas PCB sib cais ntawm lub stencil tom qab luam ntawv. Yuav tsum siv qhov ceev teeb tsa txog li 3 hli ib ob thiab raug tswj hwm los ntawm qhov loj ntawm cov qhov hauv lub stencil. Yog tias qhov no ceev dhau, nws yuav ua rau cov tshuaj nplaum tsis tso tawm tag nrho los ntawm cov qhov thiab tsim cov npoo siab nyob ib puag ncig cov nyiaj tso cia, tseem hu ua "aub-pob ntseg".
● Kev Ntxuav StencilLub stencil yuav tsum tau ntxuav tas li thaum siv uas tuaj yeem ua tau manually lossis tsis siv neeg. Lub tshuab luam ntawv tsis siv neeg muaj lub kaw lus uas tuaj yeem teeb tsa los ntxuav lub stencil tom qab ntau tus lej luam tawm siv cov khoom siv tsis muaj lint siv nrog cov tshuaj ntxuav xws li Isopropyl Alcohol (IPA). Lub kaw lus ua ob txoj haujlwm, thawj zaug yog kev ntxuav sab hauv qab ntawm lub stencil kom tsis txhob muaj smudging, thiab qhov thib ob yog kev ntxuav cov qhov apertures siv lub tshuab nqus tsev kom tsis txhob muaj kev thaiv.
● Cov xwm txheej ntawm Stencil thiab Squeegee: Ob qho tib si stencils thiab squeegees yuav tsum tau khaws cia thiab tswj xyuas kom zoo vim tias kev puas tsuaj rau ib qho twg tuaj yeem ua rau muaj qhov tsis xav tau. Ob qho tib si yuav tsum tau kuaj xyuas ua ntej siv thiab ntxuav kom huv si tom qab siv, zoo dua yog siv lub tshuab ntxuav tsis siv neeg kom tshem tawm cov seem solder paste. Yog tias pom muaj kev puas tsuaj rau squeegee lossis stencils, lawv yuav tsum tau hloov pauv kom ntseeg tau tias muaj cov txheej txheem txhim khu kev qha thiab rov ua dua.
● Luam Tawm: Qhov no yog qhov deb uas tus squeegee mus ncig thoob plaws lub stencil thiab pom zoo kom tsawg kawg yog 20 hli dhau qhov aperture deb tshaj plaws. Qhov deb dhau qhov aperture deb tshaj plaws yog qhov tseem ceeb kom muaj chaw txaus rau cov tshuaj nplaum kom dov rau ntawm qhov rov qab stroke raws li nws yog dov ntawm cov hlaws solder uas tsim cov zog downward uas tsav cov tshuaj nplaum rau hauv qhov apertures.
Cov PCBs Hom Twg Thiaj Li Luam Tau?
Tsis muaj teeb meemtawv,IMS,rigid-flexlos yogPCB yooj ywm(saib peb covKev Tsim PCB), yog tias lub zog PCB tsis txaus los txhawb PCB nws tus kheej kom tiaj tiaj raws li qhov xav tau ntawm txoj kab ntawm SMT kab, lub chaw tsim khoom PCB sib dhos yuav thov kom kho kom haumSMT cab kujlos yog lub cab kuj (ua los ntawm Durostone).
Qhov no yog ib qho tseem ceeb uas yuav tsum ua kom lub PCB ruaj khov rau ntawm lub stencil thaum lub sijhawm luam ntawv. Yog tias lub PCB, tsis hais lub rigid, IMS, rigid-flex lossis flex, tsis tau txais kev txhawb nqa tag nrho, nws tuaj yeem ua rau muaj qhov tsis zoo ntawm kev luam ntawv, xws li cov khoom tsis zoo thiab cov xim tsis zoo. Cov kev txhawb nqa PCB feem ntau yog muab nrog cov tshuab luam ntawv uas muaj qhov siab ruaj khov thiab muaj cov haujlwm programmable kom ntseeg tau tias muaj cov txheej txheem sib xws. Kuj tseem muaj cov PCB hloov kho tau thiab muaj txiaj ntsig zoo rau kev sib dhos ob sab.
PKev Tshuaj Xyuas Cov Tshuaj Pleev Xim Luam Tawm (SPI)
Cov txheej txheem luam ntawv solder paste yog ib qho tseem ceeb tshaj plaws ntawm cov txheej txheem sib dhos saum npoo av. Qhov ntxov dua qhov tsis zoo tau txheeb xyuas qhov tsawg dua nws yuav raug nqi los kho - ib txoj cai muaj txiaj ntsig los xav txog yog tias qhov tsis zoo uas tau txheeb xyuas tom qab reflow yuav raug nqi 10 npaug ntawm qhov nyiaj rov ua dua dua li qhov tau txheeb xyuas ua ntej reflow - qhov tsis zoo uas tau txheeb xyuas tom qab kev sim yuav raug nqi ntxiv 10 npaug ntxiv rau kev rov ua dua. Nws nkag siab tias cov txheej txheem luam ntawv solder paste nthuav tawm ntau lub sijhawm rau qhov tsis zoo dua li lwm tus neeg.Cov Txheej Txheem Tsim Khoom Siv Surface Mount Technology (SMT). Ntxiv rau, kev hloov mus rau cov tshuaj nplaum tsis muaj hmoov txhuas thiab kev siv cov khoom me me, tau ua rau muaj kev nyuaj ntawm cov txheej txheem luam ntawv. Nws tau raug pov thawj tias cov tshuaj nplaum tsis muaj hmoov txhuas tsis kis lossis "ntub" zoo li cov tshuaj nplaum txhuas tin. Feem ntau, cov txheej txheem luam ntawv raug dua yog qhov yuav tsum tau ua hauv cov txheej txheem tsis muaj hmoov txhuas. Qhov no tau thawb lub chaw tsim khoom kom siv qee hom kev tshuaj xyuas tom qab luam ntawv. Txhawm rau txheeb xyuas cov txheej txheem, kev tshuaj xyuas cov tshuaj nplaum tsis siv neeg tuaj yeem siv los xyuas cov tshuaj nplaum. Ntawm RICHFULLJOY, peb tuaj yeem ntes qee qhov tsis zoo ntawm cov tshuaj nplaum luam tawm, cov kab tsis txaus, cov tshuaj ntau dhau, cov duab deformation, cov tshuaj nplaum ploj lawm, cov tshuaj nplaum offset, smearing, bridging thiab ntau dua.
