Dhizaini inodiwa yeMAKA poindi uye kuburikidza nechinzvimbo chePCB redunhu bhodhi

Iyo MARK poindi inzvimbo yekuzivisa chinzvimbo pane otomatiki yekuisa muchina unoshandiswa nePCB mudhizaini, uye inonziwo referensi poindi. Iyo dhayamita ndeye 1MM. Iyo stencil mark point ndiyo nzvimbo yekuzivisa nzvimbo apo PCB inodhindwa ne solder paste / tsvuku glue mudhigirii bhodhi yekuisa maitiro. Kusarudzwa kweMako mapoinzi kunobata zvakananga kudhinda kweiyo stencil uye inova nechokwadi chekuti michina yeSMT inokwanisa kuwana nemazvo. Pcb bhodhi zvikamu. Naizvozvo, iyo MARK poindi yakakosha pakugadzirwa kweSMT.

ipcb

① MARK poindi: SMT yekugadzira michina inoshandisa iyi poindi kuti iwane otomatiki chinzvimbo chePCB board, iyo inofanirwa kugadzirwa pakugadzira PCB board. Zvikasadaro, SMT yakaoma kuburitsa, kana kutotadza kugadzira.

1. Inokurudzirwa kugadzira iyo MARK point sedenderedzwa kana mativi akaenzana kumucheto kwebhodhi. Denderedzwa ndiro rakanakisa. Iyo dhayamita yedenderedzwa MARK poindi kazhinji 1.0mm, 1.5mm, 2.0mm. Zvinokurudzirwa kuti dhizaini yedhizaini yeMAKA point ndeye 1.0mm. Kana saizi iri diki zvakanyanya, iyo MARK madotsi anogadzirwa nePCB vanogadzira haana kufuratira, iyo MARK dots haazivikanwe nyore nemuchina kana kurongeka kwekuziva kwakashata, izvo zvinokanganisa kurongeka kwekudhinda nekuisa zvikamu. Kana yakakurisa, inodarika saizi yehwindo inozivikanwa nemuchina, kunyanya iyo DEK screen printer) ;

2. Nzvimbo yeMAKA poindi inowanzogadzirwa pane yakatarisana nePCB board. Iyo MARK poindi inofanirwa kunge iri 5mm kubva kumucheto kwebhodhi, zvikasadaro iyo MARK poindi inosungirirwa zviri nyore nemuchina wekuvhara mudziyo, zvichiita kuti muchina kamera itadze kutora MARK point;

3. Edza kusagadzira nzvimbo yeMAKA kuti ienzane. Chinangwa chikuru ndechekudzivirira kusava nehanya kwemushandisi mukugadzirisa kwekugadzira kubva pakuita kuti PCB idzoserwe shure, zvichikonzera kuiswa kusina kunaka kwemuchina uye kurasikirwa kwekugadzirwa;

4. Usave nemapoinzi ebvunzo akafanana kana mapedhi munzvimbo yeinenge 5mm yakatenderedza MARK point, kana zvisina kudaro, muchina uchaita zvisizvo iyo MARK point, izvo zvinokonzeresa kurasikirwa pakugadzirwa;

② Nzvimbo yekugadzira kuburikidza nedhizaini: Zvisina kunaka kuburikidza nedhizaini zvinokonzeresa kushoma tin kana kunyange isina chinhu soldering muSMT kugadzira welding, izvo zvinokanganisa zvakanyanya kuvimbika kwechigadzirwa. Zvinokurudzirwa kuti vagadziri havagadzirise pamapedhi kana vachigadzira vias. Kana iyo via gomba yakagadzirwa yakatenderedza padhi, zvinokurudzirwa kuti mupendero weiyo via gomba uye padhi mupendero wakatenderedza yakajairwa resistor, capacitor, inductance, uye magineti bead pad inofanira kuchengetedzwa ingangoita 0.15mm kana kupfuura. Mamwe maIC, maSOT, makuru inductors, electrolytic capacitors, etc. Micheto yevias uye mapedhi akatenderedza mapedhi e diode, majoini, nezvimwewo anochengetwa kanenge 0.5mm kana kupfuura (nokuti saizi yezvikamu izvi ichawedzerwa kana iyo stencil yakagadzirirwa) kudzivirira solder paste kubva kurasikirwa kuburikidza vias kana zvinoumba reflowed;

③ Paunenge uchigadzira dunhu, teerera kuhupamhi hwedunhu rinobatanidza padhi kuti isapfuure hupamhi hwepadhi, zvikasadaro, zvimwe zvakanaka-pitch zvikamu zviri nyore kubatanidzwa kana kutengeswa uye kushoma tinned. Apo mapini ari pedyo ezvikamu zve IC anoshandiswa pakugadzirisa pasi, zvinokurudzirwa kuti vagadziri vasazvigadzirire padhi yakakura, kuitira kuti kugadzirwa kweSMT soldering hakusi nyore kudzora;

Nekuda kwekusiyana kwakasiyana-siyana kwezvikamu, chete mapedhi saizi yeakawanda akajairwa zvikamu uye zvimwe zvisiri-yakajairwa zvikamu ndizvo zvino kudzorwa. Mune ramangwana basa, ticharamba tichiita chikamu ichi chebasa, dhizaini yebasa uye kugadzira, kuitira kuti tiwane kugutsikana kwemunhu wese. .