Stencil s yog siv los ntawm hluav taws xob cov khoom siv niaj hnub no los luam cov qauv khom pas zom , uas cov ntaub ntawv tso rau hauv lub Board Board (PCB) los tuav cov khoom hluav taws xob hauv qhov chaw. Thaum reflowed, lub Cheebtsam yog tom qab ruaj khov rau PCB .
Nyob rau hauv kev sib piv, solder paste printing yog zoo ib yam li painting ib phab ntsa hauv koj lub tsev tseem nrog ib qho tseem ceeb sib txawv. Txhawm rau precisely deposit solder paste , nws yuav tsum tau mus thov rau ib txoj hauj lwm thiab nws cov ntim yuav tsum tau tswj.Yuav ua tiav qhov hauj lwm no, nws yog ib qho tsim nyog siv lub phaj hlau tshwj xeeb hu ua stencil los tswj cov luam tawm ntawm cov tshuaj txhuam ci .
Lub stencil yog ib qho kev npaj ua ntej uas hloov tsheb thiav qab rau lub PCB looj los ntawm ib qhov kev paub txog qhov nruab nrab ntawm qhov nrov. Lub stencil tau ua los ntawm cov ntawv hlau stainless, ploy zaj duab xis los yog lwm yam khoom. Tab sis stainless steel ntawv ci yog cov khoom siv nrov stencil nrov tshaj plaws vim tias nws tuaj yeem xa cov khoom siv khom duab zoo dua. Precise solder paste printing yog cov kauj ruam tseem ceeb rau kev sib fim ntawm lub rooj sibtham hauv lub rooj sibtham; Txawm li cas los xij, muaj lwm yam tseem ceeb los mus xyuas kom paub zoo tias cov khoom siv zoo ci luam ntawv:
PCB Mounting
Ua ntej yuav siv zom zaws luam ntawv, lub phiaj xwm PCB yuav tsum tau muab ntim rau lub rooj ua haujlwm los ntawm cov neeg kho tshuab clamp lossis lub tshuab nqus tsev. Cov PCB no yuav tsum muaj kev ruaj ntseg los ntawm cov pins txhawb nyob hauv qhov chaw nruab nrab ntawm PCB kom nws tsis tawm thaum luam ntawv.
Stencil Installation
Kev sib dhos tsis zoo rau lub cev yuav ua rau tus choj laug lossis tus nqi ntawm cov tais uas tsis txaus tom qab thim rov qab. Yog li, nws yog ib qho tseem ceeb kom siv sij hawm me ntsis ntxiv los xyuas kom meej tias muaj kev sib haum xeeb ntawm PCB thiab stencil.
Tshem Tawm Thiab Taws Teeb Hnav
Tom qab lub stencil yog khov kho ntawm cov PCB liab, cov tshuaj siv tshuaj yaj ywm yuav siv rau lub stencil. Yuav pib luam ntawv, ib tug cwj pwm hniav siv tau los ua rau hauv lub stencil apertures nrog lub lauj kaub tais diav . Lub siab thiab kev ceev ntawm kev zais tob hau yuav txiav txim siab txog kev luam zoo.
Tshem tawm hauv siab: lub siab ntswj siab yuav cuam tshuam qhov ntim ntawm cov tshuaj zom nyuj khov. Ntsuas ntau yuav ua rau cov khoom siv khom khaum yooj yim dua kom tsis muaj teeb meem vim hais tias lub siab yuav nyem qhov sib txawv ntawm stencil thiab PCB.
Cov ntshav plawv dhia ceev ceev: qhov ceev ntawm lub qhov mob stroke yuav ncaj qha rau cov khoom thiab cov khoom ntawm cov khoom siv tshuaj yaj yeeb, uas tig ncaj qha rau qhov zoo ntawm cov kab laug nyom tshuab luam ntawv . Feem ntau, qhov mob stroke yuav tsum tau teem ntawm 20 ~ 80 hli / s. Cov ceev ntawm lub hniav yuav tsum tau muab kho kom sib npaug ntawm cov xim ntawm qhov muab tshuaj txhuam. Yog hais tias lub khob tshuaj txhuam muaj ntau dua kev ua dej siab, lub qhov mob stroke yuav ceev. Tau kawg, cov kua siv tshuaj yaj yeeb siv tsawg yuav siv tsawg dua yog tias cov hniav txav ceev dua.
Tso tawm
Txhob tso lub phiaj xwm PCB los ntawm lub tshuab tsis pub dhau. Txwv tsis pub, nws yuav ua rau cov khoom siv tshuaj txhuam puab los deform thiab yuav cuam tshuam rau cov txheej txheem tom ntej.
Tu
Ntxuav lub stencil kom huv si kom tshem tawm cov kab tshuaj txhuam thiab cov seem hauv seem. Qhov no yuav npaj cov stencil rau tom ntej luam ntawv.
NeoDen muab tag nrho cov smt kev sib txuas daws teeb meem, xws li SMT reflow qhov cub, yoj tes laug tshuab, de laim qhov chaw tshuab luam ntawv, PCB loader, PCB unloader, nti mounter, SMT AOI tshuab, SMT SPI tshuab, SMT X-hluav taws xob tshuab, SMT los ua ke kab khoom siv, PCB Cov Khoom Siv Khoom Ua Si Khoom Nruab Nrab Txhua Yam SMT Koj xav tau, thov hu rau peb paub ntxiv:
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