- Sei uchifanira kugadzira iyo panel?
Mushure mekugadzirwa kwePCB, SMT inofanira kuiswa pamutsetse wegungano kuti ubatanidze zvikamu. Zvinoenderana nezvinodiwa zvekugadzirisa mutsara wegungano, fekitori yega yega SMT inotsanangura saizi yakakodzera kwazvo yebhodhi redunhu. Semuenzaniso, kana saizi iri diki kana yakakura kwazvo, chigadziro chekugadzirisa pcb pamutsetse wegungano haigone kugadziriswa.
Saka kana saizi yePCB yedu pachayo idiki pane saizi yakatsanangurwa nefekitori? Izvi zvinoreva kuti tinofanira kubatanidza mapuranga ematunhu, mapuranga akawanda ematunhu muchidimbu chimwe chete.Zvose zvepamusoro - speed mounter uye wave soldering inogona kuvandudza zvakanyanya kushanda.
2.Panel Illustration
1) Rondedzera saizi
A. Kuti zvive nyore kugadzirisa, veneer edge ye voids kana nzira inofanira kuva R chamfering, inowanzotenderedzwa Φ dhayamita 5, ndiro duku inogona kugadziriswa.
B. PCB ine single board size isingasviki 100mm×70mm ichaunganidzwa
2) Chimiro chisina kujairika chePCB
PCB ine chimiro chisina kujairika uye hapana bhodhi repaneru rinofanirwa kuwedzerwa ne tooling strip. Kana paine gomba paPCB rakakura kupfuura kana rakaenzana ne5mm × 5mm, gomba rinofanira kupedzwa kutanga mukugadzira kudzivirira deformation ye mantineer nendiro panguva yewelding. Chikamu chakapedzwa uye chepakutanga PCB chikamu chinofanirwa kubatanidzwa nemapoinzi akati wandei kune rimwe divi uye kubviswa mushure mekutengesa wave.
Kana kubatana pakati pechishandiso nePCB kuine v-shaped groove, chinhambwe chiri pakati pekunze kwechishandiso uye v-shaped groove iri ≥2mm; kana dunhu richarongwa mukati me2mm yegomba rechitambi.
3.The Panel
Nhungamiro yepaneti ichagadzirwa nenzira yakafanana negwaro rekumucheto kwekufambisa, kunze kwekuti hukuru husingakwanisi kuzadzisa zvinodiwa nehukuru huri pamusoro pepaneti. Zvinowanzodiwa kuti nhamba ye "v-cut" kana mitsetse yegomba resitampu ishoma pane kana kuenzana ne3 (kunze kwemabhodhi marefu uye matete asina mapuranga).
Yebhodhi-yakakosha-yakaita bhodhi, teerera kune kubatana pakati pe-sub-board uye sub-bhodhi, edza kuita kubatanidzwa kwenhanho imwe neimwe yakaparadzaniswa mumutsara.
4.Some zvinyorwa zvePCB panel
Kazhinji, kugadzirwa kwePCB kuchaita iyo inodaidzwa kuti Panelization oparesheni kuwedzera kugadzirwa kwe SMT mutsara wekugadzira. Ndeapi mashoko anofanirwa kutariswa muPCB gungano? Ndokumbira utarise avo sepazasi:
1) Iyo yekunze furemu (inosungirira mupendero) yePCB pani ichagadzirwa mune yakavharwa loop kuti ive nechokwadi chekuti iyo PCB pani haizokanganisika kana yakamisikidzwa kugadziriso.
2) PCB yepaneru chimiro inoda kukwenya sepedyo sezvinobvira, inokurudzirwa kushandisa 2 × 2, 3 × 3, ……paneli, asi hapana gadzira bhodhi rakasiyana ( yin-yang).
3) Kufara kwePanel size ≤260mm (SIEMENS line) kana ≤300mm (FUJI line). Kana zvichidikanwa kugovera otomatiki, hupamhi x kureba ≤125mm×180mm yehukuru hwepaneru.
4) Bhodhi rimwe nerimwe diki muPCB panel rinenge riine maburi matatu ekushandisa, 3≤ gomba dhayamita ≤ 6mm, wiring kana SMT haibvumidzwe mukati me1mm yegomba rekushandisa.
5) Nzvimbo yepakati pakati pebhodhi diki inofanira kudzorwa pakati pe75mm ne145mm.
6) Paunenge uchiseta gomba rekushandisa, zvakajairika kusiya nzvimbo yakavhurika yekubatira 1.5mm yakakura kutenderedza gomba rekushandisa.
7) Hapafanirwe kuve nemidziyo mikuru kana midziyo inokwira padyo nenzvimbo yekubatanidza pakati peiyo yekunze furemu yepaneru nepaneru yemukati, uye pakati pepaneru nepaneru. Kunze kwezvo, panofanira kunge paine nzvimbo inodarika 0.5mm pakati pezvikamu uye kumucheto kwePCB board kuti ive nechokwadi chekushanda kwakajairika kwechishandiso chekucheka.
8) Maburi mana ekushandisa ane dhayamita ye4mm ± 0.01mm akavhurwa pamakona mana ekunze kwepuraneti.Kusimba kwegomba kunofanirwa kuve kuri pakati nepakati kuti ive nechokwadi kuti haizoputsika panguva yekuitwa kwepamusoro nepasi. ndiro; Aperture uye chinzvimbo kurongeka kunofanirwa kunge kwakakwira, gomba madziro akatsetseka pasina burr.
9) Muchidimbu, QFP ine spacing isingasviki 0.65mm inofanira kuiswa munzvimbo yayo ye diagonal.The positioning reference zviratidzo zvinoshandiswa paPCB subboard yegungano ichashandiswa pairi mbiri, yakarongwa diagonally pane zvekumisa zvinhu.
10) Zvikamu zvakakura zvichave nezvinzvimbo kana maburi ekumisa, senge I / O interface, maikorofoni, bhatiri interface, microswitch, headphone jack, mota, nezvimwe.