1.Design for Manufacturability of PCBA                  

The manufacturability kamangidwe ka PCBA makamaka amathetsa vuto la assemblability, ndi cholinga ndi kukwaniritsa yaifupi ndondomeko njira, apamwamba soldering mlingo chiphaso, ndi mtengo wotsika kupanga.Zomwe zimapangidwa makamaka zimaphatikizansopo: kapangidwe ka njira, kamangidwe kagawo kagawo kakang'ono, kapangidwe ka chigoba cha pad ndi solder (zogwirizana ndi kuchuluka kwazomwe zimadutsa), kapangidwe kamafuta ophatikizika, kapangidwe kakudalirika kwa msonkhano, ndi zina zambiri.

(1)PCBA Manufacturability

The manufacturability kapangidwe ka PCB imayang'ana pa "manufacturability", ndi kapangidwe zili ndi kusankha mbale, atolankhani-woyenera dongosolo, annular mphete kamangidwe, solder chigoba kamangidwe, mankhwala pamwamba ndi gulu kapangidwe, etc. Mapangidwe amenewa onse okhudzana ndi processing mphamvu ya PCB ku.Zochepa ndi njira yopangira ndi kuthekera, kutalika kwa mzere wocheperako ndi katayanidwe ka mizere, m'mimba mwake pang'ono, m'lifupi mwake, m'lifupi mwake, ndi kusiyana kwachigoba cha solder ziyenera kugwirizana ndi kuthekera kwa PCB.Zopangira zopangira Zosanjikiza ndi kapangidwe ka lamination ziyenera kugwirizana ndi ukadaulo wa PCB.Choncho, manufacturability kamangidwe ka PCB imayang'ana pa kukumana ndi luso ndondomeko ya fakitale PCB, ndi kumvetsa njira kupanga PCB, ndondomeko otaya ndi luso ndondomeko ndiye maziko kukhazikitsa ndondomeko kamangidwe.

(2) Kuphatikiza kwa PCBA

The PCBA a assembleability kamangidwe imayang'ana pa "assemblability", ndiko kuti, kukhazikitsa khola ndi wangwiro processability, ndi kukwaniritsa apamwamba, mwaluso kwambiri ndi otsika mtengo soldering.Zomwe zili m'mapangidwewo zikuphatikizapo kusankha phukusi, mapangidwe a pad, njira yophatikizira (kapena ndondomeko ya njira), masanjidwe a zigawo, mapangidwe azitsulo zachitsulo, ndi zina zotero. Zofunikira zonsezi zimakhazikitsidwa pa zokolola zapamwamba zowotcherera, kupanga bwino kwambiri, ndi kutsika mtengo kwa kupanga.

2.Laser soldering ndondomeko

Ukadaulo wa laser soldering ndikuyatsa malo a pad ndi malo olunjika bwino a laser.Pambuyo poyamwa mphamvu ya laser, malo a solder amawotcha mofulumira kuti asungunuke solder, ndiyeno amasiya kuwala kwa laser kuti aziziritsa malo a solder ndi kulimbitsa solder kuti apange mgwirizano wa solder.Malo otenthetserako amatenthedwa, ndipo mbali zina za msonkhano wonse sizimakhudzidwa ndi kutentha.Nthawi yowunikira ndi laser pakuwotcherera nthawi zambiri imakhala ma milliseconds mazana angapo.Non-contact soldering, palibe kupsinjika kwamakina pa pad, kugwiritsa ntchito malo apamwamba.

Kuwotcherera kwa laser ndikoyenera kusankha njira yopangira reflow kapena zolumikizira pogwiritsa ntchito waya wa malata.Ngati ndi gawo la SMD, muyenera kugwiritsa ntchito solder phala poyamba, ndiyeno solder.Njira yopangira solder imagawidwa m'magawo awiri: choyamba, phala la solder liyenera kutenthedwa, ndipo zolumikizira za solder zimatenthedwa.Pambuyo pake, phala la solder limasungunuka kwathunthu, ndipo solder imanyowetsa pad, pomaliza kupanga cholumikizira cha solder.Kugwiritsa ntchito jenereta ya laser ndi zida zowunikira pakuwotcherera, kachulukidwe kakang'ono kamphamvu, kutentha kwambiri, kutenthetsa kosalumikizana, solder imatha kukhala phala kapena waya wa malata, makamaka oyenera kuwotcherera mafupa ang'onoang'ono m'malo ang'onoang'ono kapena olumikizira ang'onoang'ono okhala ndi mphamvu zochepa. , kupulumutsa mphamvu.

3.Laser kuwotcherera kapangidwe zofunika kwa PCBA

(1) Makina opanga ma PCBA kufala ndi kapangidwe ka malo

Pakupanga ndi kusonkhana, PCB iyenera kukhala ndi zizindikiro zomwe zimagwirizana ndi mawonekedwe a kuwala, monga Mark points.Kapena kusiyanitsa kwa pad ndi koonekeratu, ndipo kamera yowonekera imayikidwa.

(2) Njira yowotcherera imatsimikizira masanjidwe a zigawo

Njira iliyonse yowotcherera ili ndi zofunikira zake pamapangidwe a zigawo, ndipo mapangidwe a zigawo ayenera kukwaniritsa zofunikira za ndondomeko yowotcherera.Kapangidwe ka sayansi komanso koyenera kumatha kuchepetsa zolumikizira zoyipa ndikuchepetsa kugwiritsa ntchito zida.

(3) Kapangidwe kuti apititse patsogolo kuwotcherera pakudutsa

Mapangidwe ofananira a pad, kukana kwa solder, ndi stencil Pad ndi kapangidwe ka pini zimatsimikizira mawonekedwe a cholumikizira cha solder komanso kudziwa kuthekera koyamwa solder wosungunuka.Mapangidwe omveka a dzenje loyikapo amakwaniritsa kulowetsa kwa malata 75%.