I.TheSMTpick thiab chaw tshuabphaum
Lub sijhawm mounting yog qhov tseem ceeb tshaj plaws ntawm qhov cim ntawm kev kos cim mounting ceev. Nws yog hais txog lub sijhawm uas tau los ntawm kev khaws cov khoom sib txuas, tom qab sim, dhau ntawm lawv nyob rau ntawm PCB thiab rov qab mus rau qhov chaw nyob ntawm cov Cheebtsam. Txhua lub sijhawm ua tiav ntawm qhov kev ncig no, ib qho kev ua haujlwm mounting tau ua tiav, uas yog, lub voj voos mounting tau ua tiav. Feem ntau, lub sijhawm txuas ntawm CHIP cov cheebtsam hauv kev siv lub tshuab ua haujlwm siab yog nyob hauv 0.2s, thiab qhov siab tshaj plaws rau kev caij tsheb yog 0.06-0.03s. - Lub voj voog mount ntawm lub tshuab mount QFP yog 1 ~ 2 s, thiab lub voj voog mount ntawm Chip tivthaiv yog 0.3 ~ 0.6 s.
II.Qhov feem pua ntawmSMT tshuab
Mount ratio yog hais txog tus naj npawb ntawm cov mount hauv 1 teev, chav nyob yog c / h. Tus nqi mounting yog qhov ceev mounting ntsuas los ntawm lub chaw tsim tshuaj paus ntawm lub tshuab mounting nyob rau hauv cov xwm txheej zoo tagnrho. Kev xam ntawm qhov theoretical nrawm tsis xav txog kev thauj khoom thiab thau tawm sijhawm ntawm PCB. Lub thaj yog qhov ze tshaj plaws thiab tsuas yog qee qhov me me ntawm cov khoom txuas (thaj tsam ntawm 150 nti Cheebtsam). Tom qab ntawd lub sijhawm coj los txuas rau ib qho kev tivthaiv yog xam, thiab cov naj npawb ntawm cov nce hauv 1 teev tau suav raws li.
III.Support lub sijhawm ntawm SMT thaj ntau lawm kab
1. Lub sijhawm thau khoom / thau tawm ntawm PCB yog feem ntau 5 ~ 10 s rau lub tshuab mounting.
2. loj (duab plaub) PCB Cheebtsam kom deb ntawm ib leeg, lub sijhawm thaj yuav ntxiv.
3. sijhawm rov ua haujlwm.
4. kev siv lub tshuab tu lub sijhawm (hnub / vas thiv / hli), qhov no yog qhov zoo ntawm cov tshuab SMT zoo, cov khoom zoo tuaj yeem txo lub tshuab kev tswj lub sijhawm.
5. Xav tsis meej downtime.
Qhov tseeb thaj SMT qhov chaw tso tshuab ceev nrawm tshaj li qhov kev tshawb xav ua thaj, feem ntau kwv yees li 65% ntawm qhov kev xav ntawm kev ceev nrawm - 70%, qhov no yog SMT tshuab lossis xaiv thiab yuav thaum xam qhov kev tso chaw tsim khoom tsim muaj peev xwm teeb meem yuav tsum raug txiav txim siab.
