Ndi zida ndi ntchito ziti zomwe zimafunikira kupanga PCBA?

PCBA kupanga amafuna zida zofunika mongaSMT soldering phala chosindikizira, makina a SMT, reflowuvuni, AOImakina, chigawo pini akumeta ubweya makina, yoweyula soldering, ng'anjo malata, mbale makina ochapira mbale, ICT mayeso fixture, FCT mayeso fixture, kukalamba mayeso pachivundikirocho, etc. PCBA processing zomera za makulidwe osiyanasiyana ali ndi zida zosiyanasiyana.

1.SMT makina osindikizira

Makina osindikizira amakono a solder phala nthawi zambiri amakhala ndi kukwera kwa mbale, phala la solder kuwonjezera, embossing, kufalitsa bolodi ndi zina zotero.Mfundo yake yogwirira ntchito ndi: choyamba, bolodi losindikizidwa limayikidwa pa tebulo losindikizira, ndiyeno kumanzere ndi kumanja kwa makina osindikizira amasamutsa phala la solder kapena guluu wofiira kupita ku mbale yofananira yogulitsa kudzera muzitsulo zachitsulo, kenako PCB yokhala ndi kusindikiza yunifolomu imalowetsedwa ku makina a SMT kudzera patebulo lotumizira la SMT yokha.

2.Makina oyika

SMT: yomwe imadziwikanso kuti "Surface Mount System", mumzere wopangira, imakonzedwa pambuyo pa makina osindikizira a solder phala, ndi chipangizo choyendetsa mutu wa SMT kuti aike zigawo za SMT molondola pa PCB solder plate.Ilo lagawidwa m'mabuku ndi zodziwikiratu.

3.Reflow kuwotcherera

Kubwereranso kumakhala ndi gawo lotenthetsera lomwe limatenthetsa mpweya kapena nayitrogeni mpaka kutentha kokwanira kuti liwombere pa bolodi lolumikizidwa kale ndi gawo, kulola kuti solder mbali zonse zisungunuke ndikulumikizana ndi bolodi.Ubwino wa njirayi ndikuti kutentha kumayendetsedwa mosavuta, oxidation imapewa panthawi yowotcherera, ndipo ndalama zopangira zimayendetsedwa mosavuta.

4.AOI chowunikira

Dzina lonse la AOI (Automatic Optic Inspection) ndi Automatic Optical Inspection, chomwe ndi chida chomwe chimazindikira zolakwika zomwe zimachitika nthawi zambiri popanga kuwotcherera potengera mfundo za kuwala.AOI ndiukadaulo watsopano woyesera, koma chitukuko chake ndi chachangu, opanga ambiri akhazikitsa zida zoyezera za AOI.Panthawi yodziwikiratu, makinawo amasanthula PCB yokha kudzera pa kamera, sonkhanitsani chithunzicho, yerekezerani zolumikizira zoyesedwa ndi magawo oyenerera mu nkhokwe, ndikuwona zolakwika pa PCB pambuyo pokonza zithunzi, ndikuwonetsa / chizindikiro kuwonongeka kudzera pachiwonetsero kapena chizindikiro chodziwikiratu kwa ogwira ntchito yokonza.

5. Pin kudula makina kwa zigawo zikuluzikulu

Ntchito kudula ndi mapindikidwe a pini zigawo zikuluzikulu.

6. Wave soldering

Wave soldering ndi kulola kuwotcherera pamwamba pa pulagi-mu mbale mwachindunji kukhudzana ndi mkulu kutentha madzi malata kukwaniritsa cholinga cha kuwotcherera, kutentha ake mkulu kutentha madzi malata kukhalabe kupendekera pamwamba, ndi chipangizo chapadera kupanga madzi malata mawonekedwe. zofanana ndi mawonekedwe a mafunde, otchedwa "wave soldering", chinthu chake chachikulu ndi solder bar.

7. Chitofu cha malata

Nthawi zambiri, ng'anjo ya malata imatanthawuza kugwiritsa ntchito kuwotcherera pamagetsi pazida zowotcherera.Pakuti ang'onoang'ono zigawo zikuluzikulu dera kuwotcherera kugwirizana, zosavuta ntchito, kudya, dzuwa mkulu, ndi mthandizi wanu wabwino kupanga ndi processing.

8. Makina ochapira

Amagwiritsidwa ntchito kuyeretsa bolodi la PCBA ndikuchotsa zotsalira za bolodi mutatha kuwotcherera.

9. Kuyesa kwa ICT

ICT Test imagwiritsa ntchito kuyesa dera lotseguka, dera lalifupi ndi kuwotcherera mbali zonse za PCBA polumikizana ndi Mayeso a masanjidwe a PCB.

10. Kukonzekera kwa mayeso a FCT

FCT imatanthawuza Njira Yoyesera yomwe imapereka malo ogwiritsira ntchito moyerekeza (chisangalalo ndi katundu) kwa UUT: Unit Under Test, kuipangitsa kuti igwire ntchito m'mapangidwe osiyanasiyana, kuti ipeze magawo a dziko lililonse kuti atsimikizire ntchito ya UUT.Mwachidule, zikutanthauza kuti UUT imanyamula chisangalalo choyenera ndikuyesa ngati kuyankha kumakwaniritsa zofunikira.

11. Mayeso okalamba

Choyikapo mayeso okalamba chimatha kuyesa bolodi la PCBA m'magulu.The PCBA bolodi ndi mavuto akhoza kuyesedwa ndi simulating ntchito wosuta kwa nthawi yaitali.

Mtengo wa SMT


Nthawi yotumiza: Dec-28-2020

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