Takulandilani patsamba lathu.

Kodi mapangidwe a board a PCB ndi ati?Kodi zofunika zenizeni ndi ziti?

Mapangidwe a Board Circuit Board
SMT circuit board ndi imodzi mwazinthu zofunika kwambiri pamapangidwe apamwamba.Bungwe la dera la SMT ndi chithandizo cha zigawo ndi zipangizo zamagetsi zamagetsi, zomwe zimazindikira kugwirizana kwa magetsi pakati pa zigawo zikuluzikulu ndi zipangizo.Ndi chitukuko cha umisiri pakompyuta, Voliyumu matabwa PCB akukhala ang'onoang'ono ndi ang'onoang'ono, kachulukidwe akupeza apamwamba ndi apamwamba, ndi zigawo za matabwa PCB nthawi zonse kuwonjezeka.Chifukwa chake, ma PCB amafunikira kukhala ndi zofunikira zapamwamba komanso zapamwamba potengera masanjidwe onse, kuthekera kotsutsana ndi kusokoneza, njira ndi kupanga.

https://www.xdwlelectronic.com/immersion-gold-multilayer-pcb-printed-circuit-board-with-smt-and-dip-product/
Masitepe akuluakulu a mapangidwe a PCB;
1: Jambulani chithunzi chojambula.
2: Kupanga gawo la library.
3: Khazikitsani mgwirizano wolumikizana ndi netiweki pakati pa chithunzi cha schematic ndi zigawo zomwe zili pa bolodi losindikizidwa.
4: Wiring ndi masanjidwe.
5: Pangani zolemba zosindikizidwa ndikugwiritsa ntchito deta ndikuyika ndikugwiritsa ntchito deta.
Zinthu zotsatirazi ziyenera kuganiziridwa popanga mapangidwe a matabwa osindikizidwa:
Ndikofunikira kuwonetsetsa kuti zithunzi za zigawo zomwe zili mumndandanda wazomwe zikugwirizana ndi zinthu zenizeni komanso kuti maulumikizidwe amtaneti pazithunzithunzi zadongosolo ndi zolondola.
Mapangidwe a matabwa osindikizidwa amangoganizira za kugwirizana kwa maukonde a chithunzi cha schematic, komanso amaganizira zina zofunika za zomangamanga.Zofunikira za uinjiniya wadera makamaka m'lifupi mwa mizere yamagetsi, mawaya apansi ndi mawaya ena, kulumikizana kwa mizere, ndi mawonekedwe ena apamwamba kwambiri a zigawo, kutsekeka kwa zigawo, anti-interference, etc.

The zofunika unsembe wa kusindikizidwa dera bolodi dongosolo lonse makamaka kuganizira mabowo unsembe, mapulagi, mabowo udindo, mfundo Buku, etc.
Iyenera kukwaniritsa zofunikira, kuyika zigawo zosiyanasiyana ndikuyika molondola pamalo omwe atchulidwa, ndipo panthawi imodzimodziyo, iyenera kukhala yabwino kwa unsembe, kukonza dongosolo, ndi mpweya wabwino ndi kutentha.
Kupanga kwa matabwa osindikizidwa osindikizira ndi zofunikira zake kupanga, kudziwa bwino mapangidwe ndi kukwaniritsa zofunikira pakupanga.
Zofunikira panjira, kotero kuti bolodi losindikizidwa losindikizidwa likhoza kupangidwa bwino.
Poganizira kuti zigawozo n'zosavuta kukhazikitsa, debug, ndi kukonza pakupanga, ndipo nthawi yomweyo, zithunzi pa bolodi kusindikizidwa dera, soldering, etc.
Mbale, vias, etc. ayenera kukhala muyezo kuonetsetsa kuti zigawo si kugundana ndipo mosavuta anaika.
Cholinga chopanga bolodi losindikizidwa ndiloti tigwiritse ntchito, choncho tiyenera kuganizira momwe tingagwiritsire ntchito komanso kudalirika kwake,
Nthawi yomweyo, wosanjikiza ndi gawo la bolodi losindikizidwa limachepetsedwa kuti achepetse mtengo.Mapadi okulirapo moyenerera, kudzera m'mabowo, ndi mawaya amathandizira kuwongolera kudalirika, kuchepetsa ma vias, kukhathamiritsa mawaya, ndikupangitsa kuti ikhale wandiweyani., kusinthasintha kuli bwino, kotero kuti mawonekedwe onse a bolodi ndi okongola kwambiri.
Choyamba, kuti gulu la dera lopangidwa likwaniritse cholinga chomwe chikuyembekezeka, mawonekedwe onse a bolodi losindikizidwa ndi kuyika kwa zigawo zimagwira ntchito yofunika kwambiri, yomwe imakhudza mwachindunji kuyika, kudalirika, mpweya wabwino komanso kutentha kwa gulu lonse losindikizidwa, ndi kukwera kwa mtengo.

Pambuyo udindo ndi mawonekedwe a zigawo zikuluzikulu pa PCB anatsimikiza, ganizirani mawaya a PCB
Chachiwiri, kuti zinthu zomwe zidapangidwazo zizigwira ntchito bwino komanso mogwira mtima, PCB iyenera kuganizira mphamvu zake zotsutsana ndi kusokoneza pakupanga, ndipo ili ndi ubale wapamtima ndi dera linalake.
Chachitatu, zigawo ndi mapangidwe a dera la chigawocho atatha, ndondomeko yake iyenera kuganiziridwa motsatira, cholinga chake ndi kuthetsa mitundu yonse ya zinthu zoipa zisanayambe kupanga, ndipo nthawi yomweyo, kupanga mapangidwe a bolodi. ziyenera kuganiziridwa kuti apange zinthu zapamwamba kwambiri.ndi kupanga zochuluka.
Polankhula za kuyimitsidwa ndi kuyatsa kwa zigawo, tachitapo kale zina mwazinthu za gulu ladera.Kapangidwe ka bolodi la dera makamaka kusonkhanitsa gulu ladera ndi zigawo zomwe tapanga kudzera mumzere wopanga ma SMT, kuti tikwaniritse kulumikizana kwamagetsi kwabwino.Kuti tikwaniritse masanjidwe azinthu zamapangidwe athu.Pad kapangidwe, mawaya ndi odana kusokoneza, ndi zina zotero, tiyenera kuganiziranso ngati bolodi ife kupanga n'zosavuta kupanga, kaya akhoza anasonkhana ndi luso lamakono msonkhano-SMT luso, ndipo nthawi yomweyo, ayenera kukwaniritsa mu kupanga.Lolani mikhalidwe yopangira zinthu zosalongosoka ipange kutalika kwa kapangidwe.Makamaka, pali mbali zotsatirazi:

1: Mizere yopangira ma SMT yosiyana imakhala ndi zinthu zosiyanasiyana zopanga, koma malinga ndi kukula kwa PCB, kukula kwa bolodi limodzi la PCB sikuchepera 200 * 150mm.Ngati mbali yaitali ndi yaing'ono kwambiri, mungagwiritse ntchito imposition, ndi chiŵerengero cha kutalika kwa m'lifupi ndi 3: 2 kapena 4: 3 Pamene kukula kwa bolodi dera ndi wamkulu kuposa 200 × 150mm, mphamvu makina a bolodi dera ayenera kuganiziridwa.
2: Pamene kukula kwa bolodi la dera kuli kochepa kwambiri, zimakhala zovuta kuti ntchito yonse yopanga mzere wa SMT ikhale yovuta, ndipo sizovuta kupanga magulu.Ma boardwa amaphatikizidwa pamodzi kuti apange bolodi lonse loyenera kupanga misa, ndipo kukula kwa bolodi lonse kuyenera kukhala koyenera kukula kwa pasteable osiyanasiyana.
3: Kuti mugwirizane ndi kuyika kwa mzere wopanga, 3-5mm yamtundu iyenera kusiyidwa pazitsulo popanda zigawo zina, ndipo 3-8mm m'mphepete mwake iyenera kusiyidwa pa gululo.Pali mitundu itatu yolumikizana pakati pa m'mphepete mwa njira ndi PCB: A popanda m'mphepete, Pali poyambira, B ali ndi mbali ndi polekanitsa, C ali ndi mbali ndipo alibe polekanitsa.Pali njira yopanda kanthu.Malinga ndi mawonekedwe a bolodi la PCB, pali mitundu yosiyanasiyana ya jigsaw.Pakuti PCB The malo njira ya mbali ndondomeko ndi osiyana malinga ndi zitsanzo zosiyanasiyana.Ena ali ndi mabowo oyika panjira.Kutalika kwa dzenje ndi 4-5 cm.Kunena zoona, kulondola kwa malo ndikokwera kwambiri kuposa komwe kuli kumbali, kotero pali mabowo oyikapo.Pamene chitsanzo chikukonza PCB, chiyenera kukhala ndi mabowo oyika, ndipo mapangidwe a dzenje ayenera kukhala ofanana, kuti asawononge kupanga.

4: Pofuna kupeza bwino ndi kukwaniritsa apamwamba okwera olondola, m'pofunika kukhazikitsa mfundo Buku kwa PCB.Kaya pali malo ofotokozera komanso ngati ndi abwino kapena ayi zidzakhudza mwachindunji kupanga kwakukulu kwa mzere wopanga SMT.Mawonekedwe a mfundozo akhoza kukhala lalikulu , zozungulira, katatu, ndi zina zotero. .Panthawi imodzimodziyo, malo ofotokozera ayenera kukhala osalala komanso opanda phokoso popanda Kuipitsa kulikonse.Mapangidwe a malo owonetsera sayenera kukhala pafupi kwambiri ndi m'mphepete mwa bolodi, ndipo payenera kukhala mtunda wa 3-5mm.
5: Kutengera momwe ntchito ikupangidwira, mawonekedwe a bolodi amakhala owoneka ngati phula, makamaka pakuwotchera mafunde.Kugwiritsa ntchito rectangles ndikosavuta kufalitsa.Ngati pali malo osowa pa bolodi la PCB, malo omwe akusowa ayenera kudzazidwa mu mawonekedwe a m'mphepete.Kwa gulu limodzi la SMT board limalola mipata yosowa.Koma mipata yomwe ikusowa sizosavuta kukhala yayikulu kwambiri ndipo iyenera kukhala yochepera 1/3 ya kutalika kwa mbali.
Mwachidule, kupezeka kwa zinthu zosalongosoka kumatheka mu ulalo uliwonse, koma monga momwe PCB board ikupangira, iyenera kuganiziridwa kuchokera kuzinthu zosiyanasiyana, kuti zisamangozindikira cholinga cha kapangidwe kathu ka mankhwalawo, koma zikhalenso zoyenera pamzere wopangira wa SMT popanga.Kupanga misa, yesetsani momwe tingathere kupanga matabwa apamwamba kwambiri a PCB, ndikuchepetsa kuthekera kwa zinthu zomwe zili ndi vuto.

 


Nthawi yotumiza: Apr-05-2023