PCB silk screenkusindikiza ndi ndondomeko yofunika kupanga matabwa PCB dera, amene amatsimikizira khalidwe la yomalizidwa PCB bolodi. Mapangidwe a bolodi a PCB ndi ovuta kwambiri. Pali zambiri zing'onozing'ono pakupanga mapangidwe. Ngati si anagwiridwa bwino, izo zidzakhudza ntchito lonse PCB bolodi. Pofuna kukulitsa luso la kapangidwe kake ndi mtundu wazinthu, ndi zinthu ziti zomwe tiyenera kusamala nazo tikamapanga?
Zojambulajambula zimapangidwa pa bolodi la pcb ndi nsalu ya silika kapena kusindikiza kwa inkjet. Chikhalidwe chilichonse chimayimira chigawo chosiyana ndipo chimakhala ndi gawo lofunikira kwambiri pamapangidwe amtsogolo.
Ndiloleni ndikufotokozereni anthu omwe ali nawo. Nthawi zambiri, C imayimira capacitor, R imayimira resistor, L imayimira inductor, Q imayimira transistor, D imayimira diode, Y imayimira crystal oscillator, U imayimira integrated circuit, B imayimira buzzer, T imayimira transformer, K. imayimira Relays ndi zina.
Pa bolodi la dera, nthawi zambiri timawona manambala monga R101, C203, ndi zina zotero. Ndipotu, chilembo choyamba chimaimira gulu lachigawo, nambala yachiwiri imasonyeza nambala ya ntchito ya dera, ndipo nambala yachitatu ndi yachinayi imayimira nambala ya serial pa dera. bolodi. Chifukwa chake timamvetsetsa bwino kuti R101 ndiye wotsutsa woyamba pagawo loyamba logwira ntchito, ndipo C203 ndiye capacitor yachitatu pagawo lachiwiri logwira ntchito, kuti chizindikiritso chamunthu chikhale chosavuta kumvetsetsa.
M'malo mwake, zilembo zomwe zili pa bolodi la dera la PCB ndizomwe timazitcha nthawi zambiri kuti nsalu ya silika. Chinthu choyamba ogula kuona akalandira PCB bolodi ndi silika chophimba pa izo. Kupyolera mu zilembo za nsalu ya silika, amatha kumvetsa bwino zomwe zigawo ziyenera kuikidwa pamalo aliwonse panthawi yoika. Zosavuta kusonkhanitsa chigamba ndi kukonza. Ndiye ndi mavuto ati omwe ayenera kutsatiridwa pakupanga makina osindikizira a silika?
1) Mtunda pakati pa chophimba cha silika ndi pad: chophimba cha silika sichingayikidwe pa pad. Ngati pad waphimbidwa ndi nsalu yotchinga silika, izo zikhudza soldering wa zigawo zikuluzikulu, kotero kuti malo 6-8mil ayenera kusungidwa. zomwe zikutanthauza m'lifupi mwa inki. Ngati mzerewo uli wochepa kwambiri, inki sidzatuluka pa sikirini yosindikizira, ndipo zilembo sizingasindikizidwe.3) Kutalika kwa mawonekedwe a nsalu yosindikizira ya silika: Kutalika kwa zilembo nthawi zambiri kumakhala pamwamba pa 0.6mm (25mil). Ngati kutalika kwa zilembo sikukwana 25mil, zilembo zomwe zidasindikizidwa sizidziwika bwino komanso kuzimiririka mosavuta. Ngati mzere wa zilembo ndi wandiweyani kwambiri kapena mtunda uli pafupi kwambiri, izi zimapangitsa kuti zisawonekere.
4) Njira yosindikizira chophimba cha silika: nthawi zambiri amatsatira mfundo yochokera kumanzere kupita kumanja komanso kuchokera pansi kupita pamwamba.
5) Tanthauzo la Polarity: Zigawo nthawi zambiri zimakhala ndi polarity. Mapangidwe osindikizira a skrini ayenera kusamala polemba mizati yabwino ndi yolakwika ndi zigawo zowongolera. Ngati mizati yabwino ndi yolakwika imatembenuzidwa, n'zosavuta kuyambitsa dera lalifupi, kuchititsa kuti bolodi la dera liwotche ndipo silingaphimbidwe.
6) Chizindikiritso cha pini: Chizindikiritso cha pini chimatha kusiyanitsa momwe zigawozo zimayendera. Ngati zilembo za silika zimayika chizindikirocho molakwika kapena palibe, ndizosavuta kupangitsa kuti zigawozo zikhazikike mobwerera.
7) Malo a skrini ya silika: Osayika zojambula za silika pa dzenje lobowola, apo ayi bolodi la pcb losindikizidwa lidzakhala ndi zilembo zosakwanira.
Pali zambiri specifications ndi zofunika kwa PCB silika nsalu yotchinga kamangidwe, ndipo ndi specifications amenewa kulimbikitsa chitukuko cha PCB chophimba kusindikiza luso.
