Kugwiritsa ntchito zida zoyezera za SMT ndi njira yachitukuko

Ndi chitukuko cha miniaturization ya zigawo za SMD komanso zofunikira zapamwamba komanso zapamwamba za njira ya SMT, makampani opanga zamagetsi ali ndi zofunikira zapamwamba komanso zapamwamba pazida zoyesera.M'tsogolomu, zokambirana zopangira ma SMT ziyenera kukhala ndi zida zoyesera zambiri kuposa zida zopangira ma SMT.Njira yomaliza iyenera kukhala kuphatikiza kwa SPI + AOI pamaso pa ng'anjo + AOI + AXI pambuyo pa ng'anjo.

1. Mchitidwe wa miniaturization wa zigawo za SMD ndi kufunikira kwa zida za AOI

Ndi kupita patsogolo kwa anthu komanso chitukuko cha sayansi ndi ukadaulo, zida zochulukirachulukira zimakumana ndi zofuna za anthu osiyanasiyana, ndipo kupanga kumakhala kopitilira muyeso, monga mahedifoni a Bluetooth, ma PDA, ma netbook, MP4, makhadi a SD ndi zina zotero.Kufunika kwazinthu izi kwalimbikitsa kukula kwa miniaturization ya zigawo za SMD, ndipo miniaturization ya zigawo zikuluzikulu zalimbikitsanso chitukuko cha zipangizo zamakono.Kapangidwe ka zigawo za SMD passive ndi motere: 0603 zidawonekera mu 1983, 0402 zidawonekera mu 1989, 0201 zidayamba kuwonekera mu 1999, ndipo lero tayamba kugwiritsa ntchito zida za 01005.

Zigawo za 01005 zidagwiritsidwa ntchito poyambirira pazida zamankhwala zotengera kukula komanso zotsika mtengo monga ma pacemaker.Ndi kupanga kwakukulu kwa zigawo za 01005, mtengo wa 01005 watsika ndi nthawi za 5 poyerekeza ndi mtengo umene unayambika koyamba, kotero kugwiritsa ntchito zigawo za 01005 Pochepetsa mtengo, kuchuluka kwake kumakulitsidwa mosalekeza kuzinthu zomwe zili mkati. madera ena, potero zolimbikitsa kupitiriza zikamera zatsopano.

Zigawo za SMD zasintha kuchokera ku 0402 mpaka 0201 kenako mpaka 01005. Kusintha kwa kukula kukuwonetsedwa pachithunzi pansipa:

Kukula kwa 01005 chip resistor ndi 0,4 mm × 0.2 mm × 0.2 mm, malowa ndi 16% ndi 44% ya awiri akale, ndipo voliyumu ndi 6% ndi 30% ya awiri akale.Pazinthu zomwe zimakhudzidwa ndi kukula, kutchuka kwa 01005 kumabweretsa moyo kuzinthuzo.Zoonadi, zimabweretsanso zovuta zatsopano ndi mwayi ku makampani opanga zamagetsi!Kupanga zida za 01005 ndi zida za 0201 kumayika zofunikira zolondola kwambiri pazida zopangira za SMT kuyambira kutsogolo kupita kumbuyo.

Pazigawo za 0402, kuyang'ana kowoneka kumakhala kovutirapo kale komanso kovuta kukhalitsa, osasiyapo zigawo zodziwika bwino za 0201 ndi zomwe zikutukuka 01005.Choncho, ndi mgwirizano wamakampani kuti mizere yopangira ma SMT ikufunika zida za AOI kuti ziwunikidwe.Kwa zigawo monga 0201, ngati chilema chikuchitika, chikhoza kuikidwa pansi pa microscope ndikukonzedwa ndi zida zapadera.Choncho, mtengo wokonzekera wakhala wapamwamba kwambiri kuposa wa 0402. Pazigawo za 01005 kukula (0.4 × 0.2 × 0.13mm), n'zovuta kuziwona ndi maso amaliseche okha, ndipo zimakhala zovuta kwambiri kugwira ntchito ndi kusunga. ndi chida chilichonse.Chifukwa chake, ngati gawo la 01005 lili ndi zolakwika pakukonza, sizingakonzedwe.Chifukwa chake, popanga zida zazing'ono, tifunika makina ambiri a AOI kuti azitha kuyendetsa bwino ntchito, osati kungozindikira zomwe zili ndi vuto.Mwanjira iyi, titha kupeza zolakwika m'dongosolo mwachangu momwe tingathere, kukonza njira, ndikuchepetsa kuchitika kwa zolakwika.

1. Mwanjira iyi, titha kupeza zolakwika m'dongosolo mwachangu momwe tingathere, kukonza njira, ndikuchepetsa kuchitika kwa zolakwika.

Ngakhale zida za AOI zidayamba zaka 20 zapitazo, kwa nthawi yayitali, zinali zokwera mtengo komanso zovuta kuzimva, ndipo zotulukapo zake sizinali zokhutiritsa.AOI idangokhalapo ngati lingaliro ndipo sinazindikiridwe ndi msika.Komabe, kuyambira 2005, AOI yakula mwachangu.Ogulitsa zida za AOI atulukira.Malingaliro atsopano osiyanasiyana ndi zatsopano zatulukira chimodzi ndi chimodzi.Makamaka, opanga zida zapakhomo za AOI ndi kunyadira kwa China'Makampani a SMT, ndi zida zapakhomo za AOI zikugwiritsidwa ntchito.Kunena zoona, sikulinso kukwera ndi kutsika ndi zinthu zakunja, ndipo chifukwa cha kukwera kwa AOI yapanyumba, mtengo wonse wa AOI watsika kufika pa 1/2 kufika pa 1/3 ya m'mbuyomu.Chifukwa chake, kutengera mtengo wapantchito wosungidwa ndi AOI m'malo moyang'ana pamanja, kugula AOI kulinso koyenera, osatchulanso kuti kugwiritsa ntchito AOI kungathenso kuonjeza chiwongolero cha mankhwala ndikupeza mphamvu yodziwikiratu yokhazikika kuposa momwe ikuyendera. buku.Chifukwa chake AOI ndi chida chofunikira kwa opanga ma SMT omwe alipo.

Nthawi zonse, AOI ikhoza kuyikidwa m'malo atatu popanga ma SMT, pambuyo posindikiza phala la solder, isanayambe kugulitsanso komanso pambuyo pa kugulitsanso kuti iwunikire mtundu wa magawo osiyanasiyana.Ngakhale kugwiritsa ntchito AOI kwafala, ambiri opanga amangoyika AOI kuseri kwa ng'anjo, ndikugwiritsa ntchito AOI ngati mlonda womaliza kuti katundu alowe mu gawo lotsatira, m'malo moyang'ana pamanja.Kuphatikiza apo, opanga ambiri akadali ndi kusamvetsetsa za AOI.Palibe AOI yomwe ingapindule popanda mayeso abodza, ndipo palibe AOI yomwe ingapindule popanda mayeso ophonya.Ma AOI ambiri amasankha sikelo yolondola pakati pa kuyesa konyenga ndi kuyesa kophonya, chifukwa algorithm ya AOI ndi njira iliyonse.Fananizani chitsanzo chamakono ndi chitsanzo cha makompyuta (chithunzi kapena parameter), ndipo perekani chiweruzo potengera kufanana.

Pakadali pano, pali ngodya zambiri zakufa mu AOI ng'anjo ikagwiritsidwa ntchito.Mwachitsanzo, AOI ya lens imodzi imatha kuzindikira gawo la QFP, SOP, ndi kuwotcherera zabodza.Komabe, kuchuluka kwa ma lens ambiri AOI a QFP ndi mapazi okwezedwa a SOP ndi malata ochepa ndi apamwamba 30% okha kuposa AOI ya lens imodzi, koma kumawonjezera mtengo wa AOI komanso zovuta zamapulogalamu.Zithunzizi zimapangidwa pogwiritsa ntchito kuwala kowonekera.AOI ilibe mphamvu yozindikira malo olumikizirana osawoneka monga BGA mipira yosowa ndi PLCC kusokeretsa zabodza.