Kodi mzere wopanga wa SMT ndi chiyani

Kupanga zamagetsi ndi chimodzi mwazinthu zofunika kwambiri pamakampani azidziwitso.Pakupanga ndi kusonkhanitsa zinthu zamagetsi, PCBA (msonkhano wosindikizidwa wa board board) ndiye gawo lofunikira komanso lofunikira kwambiri.Nthawi zambiri pamakhala zopanga za SMT (Surface Mount Technology) ndi DIP (Dual in-line package).

Cholinga chotsatira pakupanga mafakitale amagetsi ndikuwonjezera kachulukidwe kantchito ndikuchepetsa kukula kwake, mwachitsanzo, kupanga mankhwalawo kukhala ochepa komanso opepuka.Mwa kuyankhula kwina, cholinga chake ndikuwonjezera ntchito zambiri pa bolodi la dera lofanana kapena kusunga ntchito yofanana koma kuchepetsa malo.Njira yokhayo yokwaniritsira cholingacho ndikuchepetsa zida zamagetsi, kuti zigwiritse ntchito m'malo mwa zigawo zachizolowezi.Zotsatira zake, SMT imapangidwa.

Ukadaulo wa SMT wakhazikika pakusinthira zida zamagetsi zomwe wamba ndi mtundu wamagetsi amagetsi ndikugwiritsa ntchito mu tray pakuyika.Pa nthawi yomweyo, njira ochiritsira pobowola ndi kuika wakhala m'malo ndi phala mofulumira padziko PCB.Komanso, dera la PCB lachepetsedwa popanga matabwa angapo kuchokera pagulu limodzi.

Zida zazikulu za mzere wopanga wa SMT zikuphatikizapo: chosindikizira cha Stencil, SPI, pick and place machine, reflow soldering uvuni, AOI.

Ubwino wochokera kuzinthu za SMT

Kugwiritsa ntchito SMT pazogulitsa sikungofuna msika kokha komanso zotsatira zake zina pakuchepetsa mtengo.SMT imachepetsa mtengo chifukwa cha izi:

1. Malo ofunikira ndi zigawo za PCB ndizochepa.

Malo ofunikira a PCB onyamulira zigawozo ndi ochepa chifukwa kukula kwa zigawo zosonkhanitsazo kwachepetsedwa.Komanso, zinthu mtengo kwa PCB yafupika, komanso palibenso processing mtengo pobowola kwa kudzera-mabowo.Ndi chifukwa soldering wa PCB mu njira SMD mwachindunji ndi lathyathyathya m'malo kudalira zikhomo za zigawo zikuluzikulu mu DIP kudutsa mabowo mokhomerera kuti soldered kwa PCB.Kuphatikiza apo, mawonekedwe a PCB amakhala othandiza kwambiri pakalibe mabowo, ndipo chifukwa chake, zigawo zofunika za PCB zimachepetsedwa.Mwachitsanzo, zigawo zinayi zoyambirira za kapangidwe ka DIP zitha kuchepetsedwa kukhala magawo awiri ndi njira ya SMD.Ndi chifukwa pogwiritsira ntchito njira ya SMD, zigawo ziwiri za matabwa zidzakhala zokwanira kuti zigwirizane ndi mawaya onse.Mtengo wa zigawo ziwiri za matabwa ndithudi ndi wocheperapo kusiyana ndi wa zigawo zinayi za matabwa.

2. SMD ndiyoyenera kwambiri kupanga zochuluka

Kupaka kwa SMD kumapangitsa kukhala chisankho chabwinoko pakupanga zokha.Ngakhale pazigawo za DIP zachizolowezi, palinso malo odziphatikizira okha, mwachitsanzo, mtundu wopingasa wa makina olowetsamo, makina oyikapo, makina olowetsamo osamvetseka, ndi makina olowetsa IC;Komabe, kupanga nthawi iliyonse kumakhala kocheperako kuposa SMD.Pamene kuchuluka kwa kupanga kumawonjezeka pa nthawi iliyonse yogwira ntchito, mtengo wamtengo wapatali umachepetsedwa.

3. Ogwiritsa ntchito ochepa amafunikira

Nthawi zambiri, anthu atatu okha ndi omwe amafunikira pamzere wopangira wa SMT, koma osachepera 10 mpaka 20 amafunikira pamzere wa DIP.Pochepetsa chiwerengero cha anthu, sikuti mtengo wa ogwira ntchito umachepetsedwa komanso kasamalidwe kamakhala kosavuta.