SMT ukuphrinta ngisho tin izimbangela kanye nezixazululo

Ukucutshungulwa kwe-SMT kuzovela izinkinga ezithile zekhwalithi embi, njengetshe lesikhumbuzo elimile, ngisho nethayela, i-solder engenalutho, i-solder yamanga, njll. Kunezizathu eziningi zekhwalithi empofu, uma kunesidingo sokuhlaziywa okuqondile kwezinkinga ezithile.

Namuhla nawe ukwethula ukuphrinta kwe-SMT ngisho ne-tin izimbangela nezisombululo.

Iyini i-SMT ngisho ne-tin?

Kusukela encazelweni engokoqobo yomqondo kathini ingaqondwa kahle, cishe amaphedi aseduze avela ithini eyeqile, ukwakheka kokuxhumana, amaphedi ahlukene noma imigqa, ngethayela eliningi elixhunywe ndawonye, ​​elaziwa nangokuthi ibhuloho lethini.

Okulandelayo yi-SMT ngisho nezizathu ze-tin futhi zithuthukise izindlela zokuphikisa:.

1.Ukunamathela okungalungile kokunamathisela kwe-solder

I-solder paste yenziwe nge-tin powder kanye nenhlanganisela ye-flux, lapho ingapakishwa ngaphambi kokusetshenziswa izofakwa esiqandisini, lapho isidingo sokusebenzisa, kuyadingeka ukufudumala futhi ugovuze ngokulinganayo kusengaphambili, avele ngisho ne-tin ngenxa ye-viscosity empofu. of the unama, kungase kube emuva lokushisa noma ukunyakazisa isikhathi akwanele.

Izinyathelo zokuthuthukisa

Ngaphambi kokusetshenziswa, fudumeza unamathisele imizuzu engaphezu kwe-30 bese ugoqa ngokulinganayo kuze kube yilapho unamathisele ungaphuli.Amafekthri amaningi ngokwengeziwe manje asebenzisa amakhabethe okuphatha unamathisele we-solder ahlakaniphile, angathuthukisa ngempumelelo le nkinga.

2.Ukuvulwa kwe-stencil akunembile ngokwanele

I-stencil idinga ukusetshenziselwa ukuchibiyela, i-stencil empeleni iwukuvuza kwephedi le-pcb, idinga ukwenziwa ngosayizi wephedi ye-pcb nosayizi, indawo, amaphutha athile okukhiqizwa kwe-stencil, kungase kube nezimbobo ezinkulu kakhulu, okuholela ekuvuzeni kwenani unamathisele i-solder ephrintiwe kakhulu, kukhona ukushintsha kokunamathisela okuholela kuthayini.

Izinyathelo zokuthuthukisa

I-stencil idinga ukuhlolwa ngokucophelela ngokumelene nefayela le-Gerber, futhi i-laser kufanele isetshenziselwe ukuvula i-stencil, kuyilapho ukuvulwa kwe-stencil (ikakhulukazi amaphedi anezikhonkwane) kufanele kube yikota encane kune-pad yangempela.

3.Umshini wokuphrinta we-solder unamaukuphrinta, ibhodi le-pcb livela likhululekile

PCB pads ukuze uphrinte solder unama, isidingo sokusebenzisa solder unama ukuphrinta umshini wokunyathelisa, solder unama ukuphrinta umshini unetafula PCB solder unama ukuphrinta futhi demoulding, ku PCB pad solder unama ukuphrinta, PCB kudingeka ukudlulisela etafuleni indawo eshiwo, futhi isidingo fixture fixture pcb ibhodi, uma ukuphambuka isikhundla sokudlulisa, fixture akazange ngocingo pcb, uzovela ukunyathelisa offset, ukukhiqiza ngisho tin.

Izinyathelo zokuthuthukisa

Lapho uphrinta unamathisele i-solder kuphrinta yokunamathisela ye-solder, udinga ukulungisa iphutha uhlelo kusenesikhathi ukuze indawo yokudlulisa i-pcb inembile, futhi isilungiselelo kufanele sihlolwe njalo futhi sithathelwe indawo ukuze silungiswe.

Lezi zici ezingenhla, ukuze ugweme ukwenzeka ngisho nethini kanye nezinye ikhwalithi embi, zidinga ukwenza umsebenzi omuhle ekuqaleni kokuqinisekisa, kodwa nangemuva komshini wokuphrinta ukuze wengezeUmshini we-SMT SPI ukutholwa, ngangokunokwenzeka ukunciphisa izinga elibi.

Izici zeI-NeoDen ND1iphrinta ye-stencil

Dlulisa indlela yethrekhi Kwesobunxele - Kwesokudla, Kwesokudla - Kwesokunxele, Kwesokunxele - Kwesokunxele, Kwesokudla - Kwesokudla

Imodi yokudlulisela Ithrekhi yohlobo lwengxenye

Imodi yokuqinisa i-PCB

I-Software ingcindezi eguquguqukayo ye-elastic side pressure

Inketho:

1. Ivacuum yegumbi lokuncela eliphansi lilonke

2. Ivacuum eyingxenye yamaphoyinti amaningi angezansi

3. I-Edge lock clamping plate

Indlela yokusekela ibhodi Ithinjana likaMagnetic, idivayisi yokubamba umsebenzi okhethekile (inketho: Igridi-Lok)