Ts'ebetso ea tlhahiso ea PCBA e ka aroloa ka lits'ebetso tse 'maloa tse kholo:
Moralo le nts'etsopele ea PCB → Ts'ebetso ea patch ea SMT → Ts'ebetso ea plug-in ea DIP → teko ea PCBA → tse tharo tse thibelang ho roala → kopano e felileng ea sehlahisoa.
Pele, PCB moralo le ntshetsopele
1.Tlhoko ea sehlahisoa
Morero o itseng o ka fumana phaello e itseng 'marakeng oa hajoale, kapa ba chesehelang ba batla ho phethela moralo oa bona oa DIY, ebe tlhokahalo e tsamaellanang ea sehlahisoa e tla hlahisoa;
2. Moralo le nts'etsopele
E kopantsoe le litlhoko tsa sehlahisoa sa moreki, baenjiniere ba R & D ba tla khetha chip e lumellanang le motsoako oa potoloho ea kantle ea tharollo ea PCB ho fihlela litlhoko tsa sehlahisoa, ts'ebetso ena e batla e le telele, litaba tse amehang mona li tla hlalosoa ka thoko;
3, tlhahiso ea liteko tsa mohlala
Kamora nts'etsopele le moralo oa PCB ea pele, moreki o tla reka lisebelisoa tse lumellanang ho latela BOM e fanoeng ke lipatlisiso le nts'etsopele ho etsa tlhahiso le ho lokisa sehlahisoa, mme tlhahiso ea liteko e arotsoe ka bopaki (10pcs), bopaki ba bobeli (10pcs), tlhahiso ea teko ea batch e nyane (50pcs ~ 100pcs), tlhahiso e kholo ea liteko tsa batch (100pcs ~ 3001pcs), ebe e tla kena sethaleng sa tlhahiso ea bongata.
Ea bobeli, ts'ebetso ea patch ea SMT
Tatelano ea ts'ebetso ea patch ea SMT e arotsoe ka: ho baka lintho tse bonahalang → phihlello ea solder paste → SPI→ ho kenya → reflow soldering →AOI→ lokisa
1. Lisebelisoa tsa ho baka
Bakeng sa li-chips, liboto tsa PCB, li-module le lisebelisoa tse khethehileng tse 'nileng tsa e-ba teng ka nako e fetang likhoeli tse 3, li lokela ho behoa ka 120 ℃ 24H. Bakeng sa li-microphone tsa MIC, mabone a LED le lintho tse ling tse sa hanyetsaneng le mocheso o phahameng, li lokela ho behoa ka 60 ℃ 24H.
2, phihlello ea peista ea solder (mocheso o khutlisang → ho hlohlelletsa → sebelisa)
Hobane pente ea rona ea solder e bolokiloe sebakeng sa 2 ~ 10 ℃ nako e telele, e hloka ho khutlisetsoa kalafong ea mocheso pele e sebelisoa, 'me ka mor'a mocheso o khutlang, e hloka ho hlohlelletsoa ka blender, ebe e ka khona. e hatisoe.
3. Ho lemoha ha SPI3D
Ka mor'a hore peista ea solder e hatisoe ka boto ea potoloho, PCB e tla fihla ho sesebelisoa sa SPI ka lebanta la conveyor, 'me SPI e tla lemoha botenya, bophara, bolelele ba khatiso ea solder peista le boemo bo botle ba holim'a thini.
4. Thaba
Ka mor'a hore PCB e phalle ho mochine oa SMT, mochine o tla khetha thepa e nepahetseng ebe o e beha ho nomoro e tsamaisanang le eona ka lenaneo le behiloeng;
5. Reflow welding
The pcb tlala lintho tse bonahalang phalla ho ka pele ho reflow tjheseletsa, 'me o feta libakeng tse leshome mohato mocheso ho tloha 148 ℃ ho 252 ℃ le eena, ka tsela e sireletsehileng bonding likarolo rona le PCB boto hammoho;
6, tlhahlobo ea AOI ea inthaneteng
AOI ke mochine o ikemetseng oa optical detector, o ka hlahlobang boto ea PCB ka ntle ho sebōpi ka ho hlahloba lintlha tse phahameng, 'me e ka hlahloba hore na ho na le lisebelisoa tse fokolang holim'a boto ea PCB, hore na thepa e fetotsoe, hore na motsoako oa solder o hokahane pakeng tsa. likarolo le hore na letlapa le fokotsehile.
7. Ho lokisa
Bakeng sa mathata a fumanoang ho PCB board ho AOI kapa ka letsoho, e hloka ho lokisoa ke moenjiniere oa tlhokomelo, 'me boto e lokisoang ea PCB e tla romelloa ho plug-in ea DIP hammoho le boto e tloaelehileng ea offline.
Boraro, plug-in ea DIP
Ts'ebetso ea plug-in ea DIP e arotsoe ka: ho theha → plug-in → wave soldering → ho itšeha leoto → ho tšoara thini → poleiti ea ho hlatsoa → tlhahlobo ea boleng
1. Karo ea polasetiki
Lisebelisoa tsa plug-in tseo re li rekileng kaofela ke lisebelisoa tse tloaelehileng, 'me bolelele ba pini ea thepa eo re e hlokang e fapane, kahoo re hloka ho bopa maoto a lisebelisoa esale pele, e le hore bolelele le sebōpeho sa maoto li re loketse. ho etsa plug-in kapa post tjheseletsa.
2. Plug-in
Likarolo tse phethiloeng li tla kenngoa ho latela template e lumellanang;
3, wave soldering
Letlapa le kentsoeng le behiloe holim'a jig ho ea ka pele ho solder ea wave. Taba ea pele, phallo e tla fafatsoa ka tlase ho thusa ho tjheseletsa. Ha poleiti e fihla ka holim'a sebōpi sa thini, metsi a thini a sebōping a tla phaphamala ebe a kopana le phini.
4. Khaola maoto
Hobane lisebelisoa tsa pele ho ts'ebetso li tla ba le litlhoko tse khethehileng tsa ho behella ka thōko pinana e telele hanyenyane, kapa thepa e kenang ka boeona ha e lokele ho sebetsa, pinana e tla fokotsoa ho ea bophahamong bo loketseng ka ho kuta ka letsoho;
5. Ho tšoara thini
Ho ka 'na ha e-ba le liketsahalo tse mpe tse kang masoba, likoti, li-welding tse hlolohetsoeng, li-welding tsa bohata joalo-joalo ka lithakhisa tsa boto ea rona ea PCB ka mor'a sebōpi. Sets'oants'o sa rona sa masenke se tla li lokisa ka ho li lokisa ka letsoho.
6. Hlatsoa letlapa
Ka mor'a hore leqhubu la soldering, tokiso le lihokelo tse ling tse ka pele, ho tla ba le phallo e setseng kapa thepa e 'ngoe e utsoitsoeng e khomaretsoeng sebakeng sa pin ea boto ea PCB, e hlokang basebetsi ba rona ho hloekisa bokaholimo ba eona;
7. Tlhahlobo ea boleng
PCB boto likarolo phoso le leakage cheke, ba sa tšoaneleheng PCB boto lokela ho lokisoa, ho fihlela ba tšoanelehang ho tsoela pele ho mohato o latelang;
4. Tlhahlobo ea PCBA
Teko ea PCBA e ka aroloa ka tlhahlobo ea ICT, tlhahlobo ea FCT, tlhahlobo ea botsofali, tlhahlobo ea vibrate, joalo-joalo
Tlhahlobo ea PCBA ke teko e kholo, ho latela lihlahisoa tse fapaneng, litlhoko tse fapaneng tsa bareki, tlhahlobo e bolela hore e sebelisoa e fapane. ICT teko ke ho lemoha tjheseletsa boemo ba likarolo le on-off boemo ba mela, ha FCT teko ke ho lemoha input le dipholo tsa parameters ea PCBA boto ho hlahloba hore na ba kopana le ditlhoko.
Tse hlano: PCBA tse tharo tse khahlanong le ho roala
PCBA mehato e meraro e khahlanong le ho roala ke: lehlakore la borashe A → bokaholimo bo omeletseng → lehlakore la ho hlatsoa B → mocheso oa kamore 5. Botenya ba ho fafatsa:
0.1mm-0.3mm6. Ts'ebetso eohle ea ho roala e lokela ho etsoa ka mocheso o seng tlase ho 16 ℃ le mongobo o ka tlase ho 75%. PCBA tse tharo-ba khahlanong le barbotage e ntse e le ngata, haholo-holo ba bang ba mocheso le mongobo tikolohong e thata haholoanyane, PCBA barbotage tse tharo-ba khahlanong le pente e na le insulation phahameng, mongobo, leakage, makala, lerōle, kutu,-ba khahlanong le botsofali,-ba khahlanong le hlobo, anti- likarolo tse hlephileng le ts'ebetso ea ho hanyetsa corona, e ka eketsa nako ea polokelo ea PCBA, ho itšehla thajana ha khoholeho ea ka ntle, tšilafalo joalo-joalo. Mokhoa oa ho fafatsa ke mokhoa oa ho roala o sebelisoang haholo indastering.
Kopano ea lihlahisoa e felile
7.Boto ea PCBA e koahetsoeng ka teko ea OK e bokelloa bakeng sa khetla, ebe mochine oohle o tsofala le ho hlahlojoa, 'me lihlahisoa tse se nang mathata ka tlhahlobo ea botsofali li ka romelloa.
Tlhahiso ea PCBA ke sehokelo ho sehokelo. Bothata leha e le bofe ts'ebetsong ea tlhahiso ea pcba bo tla ba le tšusumetso e kholo ho boleng ba kakaretso, 'me mokhoa o mong le o mong o hloka ho laoloa ka thata.