Kwinkqubo yokuvelisa iPCB, kukho enye inkqubo ebalulekileyo, oko kukuthi, isixhobo soluhlu. Ugcino lomphetho wenkqubo lubaluleke kakhulu kulungiso lweziqephu ze-SMT ezilandelayo.
Umcu wesixhobo yinxenye eyongeziweyo kumacala omabini okanye kumacala amane ebhodi yePCB, ikakhulu ukunceda iplagi ye-SMT ukuba idibanise ibhodi, oko kukuthi, ukuququzelela i-SMT SMT umatshini wokubamba umkhondo wokubamba ibhodi yePCB kwaye uhambe phakathi kwebhodi. SMT umatshini SMT. Ukuba amacandelo asondele kakhulu kumphetho wengoma afunxa amacandelo kumatshini womatshini we-SMT SMT kwaye uwancamathele kwibhodi yePCB, isenzeko songquzulwano singenzeka. Ngenxa yoko, imveliso ayikwazi ukugqitywa, ngoko ke umgca wesixhobo esithile kufuneka ugcinwe, kunye nobubanzi obuqhelekileyo be-2-5mm. Le ndlela ikwafanelekile kumacandelo athile eplagi, emva kokutywinwa kwamaza ukuthintela izinto ezifanayo.
Uluhlu lwezixhobo aluyonxalenye yebhodi yePCB kwaye lunokususwa emva kokuba ukuveliswa kwePCBA kugqityiwe
Indlela yevelisa umcu wesixhobo:
I-1, i-V-CUT: unxibelelwano lwenkqubo phakathi komgca wesixhobo kunye nebhodi, inqunyulwe kancinane kumacala omabini ebhodi yePCB, kodwa inganqunyulwa!
I-2, imivalo yokudibanisa: sebenzisa imivalo emininzi ukudibanisa ibhodi yePCB, yenza imingxuma yesitampu phakathi, ukuze isandla siphulwe okanye sihlanjwe ngomatshini.
Ayizizo zonke iibhodi ze-PCB ezifuna ukongeza umcu wesixhobo, ukuba ibhodi yePCB isithuba esikhulu, ungashiyi amacandelo epatch ngaphakathi kwe-5mm kumacala omabini ePCB, kulo mzekelo, akukho mfuneko yokongeza umcu wesixhobo, kukho kwakhona imeko ibhodi pcb ngaphakathi 5mm kwelinye icala akukho patch amacandelo, okoko nje ukongeza tooling strip kwelinye icala. Ezi zifuna ingqwalasela yenjineli yePCB.
Ibhodi idliwe tooling strip iya kwandisa iindleko iyonke PCB, ngoko ke kuyimfuneko ukulungelelanisa uqoqosho kunye manufacturability xa uyila PCB edge inkqubo.
Kwibhodi ethile yePCB imilo ekhethekileyo, ibhodi yePCB enesixhobo esi-2 okanye esi-4 sinokwenziwa lula ngokuhlanganisa ibhodi ngobuchule.
Kwinkqubo ye-SMT, uyilo lwemowudi yokuqhawula kufuneka ithathele ingqalelo epheleleyo yobubanzi bomzila womatshini wokuqhekeza we-SMT. Kwibhodi yokuqhekeza enobubanzi obungaphezulu kwe-350mm, kuyimfuneko ukunxibelelana nenjineli yenkqubo yomboneleli we-SMT.