Ngokuthuthuka kwemboni yolwazi lwe-elekthronikhi, imikhiqizo ye-elekthronikhi egcinayo inezidingo eziphakeme neziphakeme zokucwengisiswa kwe PCB imboni. Ukubhoboza kuyisinyathelo esibalulekile ekukhiqizweni kwe-PCB, esenziwe yafinyelela kububanzi obuncane bembobo obungu-0.08mm, okuyisikhala esikhulu sembobo esingu-0.1mm noma ngisho nangaphezulu. Ngaphezu kokuqhuba izimbobo, izimbobo zezingxenye, ama-grooves, izimbobo ezimise okukhethekile, ukuma kwepuleti, njll., zonke zidinga ukuhlolwa. Indlela yokuthola ikhwalithi yokubhoboza yebhodi le-PCB ngendlela efanele futhi enembile isibe isixhumanisi esibalulekile sokuqinisekisa ikhwalithi yemikhiqizo. Umshini wokuhlola imbobo we-PCB uwumshini wokuhlola ozenzakalelayo osetshenziswayo ekuhlolweni kwekhwalithi yokumba. Inhloso yaleli phepha ukuhlaziya umsebenzi womshini wokuhlola imbobo enqubweni yokumba nokuhlinzeka ngolwazi oluyisethenjwa kubakhiqizi be-PCB.

Enqubweni yokumba ye-PCB, kuyadingeka ukulawula izinkinga zekhwalithi ezilandelayo: i-porosity, ukuvuza, ukufuduka, ukubhoboza okungalungile, ukungangeni, ukulahlekelwa kwembobo, imfucuza, ngaphambili, imbobo yepulaki. Njengamanje, izindlela zokulawula zabakhiqizi abahlukahlukene ikakhulukazi ukumisa inqubo yokumba ngaphambi kokumba nokuqinisa izindlela zokuhlola ngemuva kokumba. In actual production, because the pre-drilling method can only reduce the probability of error, can not completely eliminate, we must rely on post-drilling inspection to ensure product quality.

In the post-drilling inspection, many domestic manufacturers are still using the plug gauge combined with artificial visual film (film) set inspection method: through the plug gauge focus on checking the hole, hole small, through the film focus on porous, leaky hole, shift, not through, not through, other hole damage, front, hole plug through artificial visual to complete. Ekusetshenzisweni kokuhlola ifilimu, umkhiqizo ngamunye ubhoboza isampula yefilimu ebomvu, uhlole ngephinikhodi nepuleti lomkhiqizo elilungisiwe, ukuhlola okubonakalayo okwenziwa ngesandla ngaphansi kwebhokisi lokukhanya. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

Izinkinga ezinkulu zimi kanje:

Okokuqala, izidingo zokuhlola indawo encane azikwazi ukuqinisekiswa: umkhuba wokukhiqiza ubonisa ukuthi ku-PCB enembobo encane engu-≥0.5mm, imanuwali ingafinyelela imiphumela yokuhlola ephakeme ngaphansi kwesisekelo sokuqinisekisa ukusebenza kahle kokukhiqiza okuthile. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Ngokuncipha kosayizi wokuvula, kupuleti lomkhiqizo elingaphansi kuka-0.5mm, ikhono lokuhlola lamehlo omuntu lizokwehla ngokushesha, ngoba ipuleti lomkhiqizo elingu-≤0.25mm, ikhwalithi yokwenziwa kwesampula kunzima ukuyiqinisekisa.

Okwesibili, ukusebenza kahle kokuhlolwa kwezandla kunqunyelwe: ukusebenza kahle kokuhlolwa kwezandla kuhlobene ngokuqondile nenani lezimbobo kanye nokuvula okuncane. Okuhlangenwe nakho kwangempela kokukhiqiza kubonisa ukuthi ukusebenza kahle kuzoncishiswa kakhulu uma imbobo ingaphezu kuka-10000 futhi imbobo encane ingaphansi kuka-0.5mm. Ukuhlola mathupha kulungele kuphela ukwenza amasampula. Ukuze uthole i-high density plate, akunakwenzeka ukuqinisekisa ikhwalithi yokumba ngesandla.

Okwesithathu, ukuzinza kwekhwalithi akunakuqinisekiswa: abantu bazothinteka ngokuhlangenwe nakho, isimo sengqondo, ukukhathala, umthwalo wemfanelo kanye nezinye izici, kunzima ukuqinisekisa ukuzinza kwekhwalithi. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

Ukuze kuxazululwe lezi zinkinga ezingenhla, amafekthri amaningi e-PCB AMANINGI asebenzise imishini ye-AOI yokuhlola imigodi ukuze ithathele indawo imisebenzi yezandla ebangeni elikhulu. Ikakhulukazi emabhizinisini axhaswe ngemali yaseJapan naseTaiwan, iminyaka eminingi yokuzijwayeza ifakazele ukusebenza kwale ndlela entsha, okufanele ukunakwa nokubhekwa kwabakhiqizi abaningi basekhaya be-PCB.

Impahla yokuhlola imbobo ye-AOI ingeyemishini yokuhlola okuzenzakalelayo. Ngokwefomu lesithombe sokukhubazeka okuhlukahlukene kokumba, ingahlukaniswa ibe: i-porous, imbobo encane, imbobo enkulu, imbobo encane, insalela, ukuphambuka kwembobo kanye nokuma kwembobo. Ihlukaniswe yaba izinhlobo ezimbili: eyodwa umshini wokuhlola i-Hole, enye i-Hole measurement kanye nomshini wokuhlola (imbobo-AOI). Empeleni, kukhona nomshini wokuhlola i-X-ray, osetshenziswa kakhulu ekuhlaziyeni izimbobo eziyizimpumputhe ezigqitshiwe kanye namabhodi anezingqimba eziningi, okungahambisani nenhloso yokuhlolwa kwebhantshi lefilimu ngesandla futhi okungeyona ingxenye yokuhlaziya leliphepha.

Ngokusho kokuhlangenwe nakho okuhambisana nemishini yabakhiqizi be-PCB, kunconywa ukusebenzisa amasethi amaningi omshini wokuhlola imbobo ukuze kuhlolwe ngokugcwele ipuleti lokuqala nepuleti eliphansi, kugxilwe ekuhlolweni kwemigodi, izimbobo ezimbalwa, izimbobo ezinkulu, izimbobo ezincane kanye nemfucumfucu; Umshini wokulinganisa nokuhlola indawo yembobo usetshenziselwa ukuhlola indawo, ugxile ekuchezukeni kwembobo. Izici zalezi zisetshenziswa zombili zimi kanje:

Umshini wokuhlola imbobo: izinzuzo ziyinani eliphansi, ukusebenza kahle kokuhlola, hlola isilinganiso se-PCB esingu-600mm×600mm samasekhondi angu-6~7, singabona imbobo, imbobo encane, imbobo, imbobo encane, ukuhlola okusele. Okubi ukuthi ikhono lokuhlola indawo yembobo aliphezulu, futhi kungatholwa kuphela amaphutha amakhulu. Ngokusho kokuhlangenwe nakho kwangempela komkhiqizi, ngokuvamile ama-RIGS angu-15 afakwe umshini wokuhlola umgodi ongu-1.

Isikhundla sembobo umshini wokulinganisa nokuhlola: inzuzo ukuthi zonke izinto zingabhekwa. Okubi ukuthi intengo iphezulu (cishe izikhathi ezingu-3 ~ 4 zomshini wokuhlola umgodi), ukusebenza kahle kokuhlola kuphansi, kuthatha imizuzu embalwa noma ngisho nangaphezulu ukuhlola ucezu olu-1. It is generally recommended to configure one machine for product sampling inspection to supplement the deficiency of hole checking machine for hole position inspection.

Inspection principle of hole inspection AOI equipment: PCB drilling image is collected by optical system, and compared with the design document (drill tape file or Gerber file). If the two are consistent, it indicates that the drilling is correct; otherwise, it indicates that there is a problem in the drilling, and then analyze and classify the defect type according to the image morphology. Imishini yokuhlola imbobo iqhathaniswa nemibhalo yokuklama yokumba, futhi ukuhlola okubukwayo okwenziwa ngesandla kuqhathaniswa nefilimu. Ngokwesimiso sokuhlola, izinkinga ezibangelwa amaphutha okumba ifilimu zingagwenywa, futhi ukwethembeka kuphakeme.

Ukuhlaziywa kobuchwepheshe bomshini wokuhlola imbobo ye-PCB

Iqhaza lomshini wokuhlola imbobo kunqubo yokumba i-PCB ibonakala kulezi zici ezilandelayo:

Okokuqala, ukuhlolwa kwekhwalithi yokumba okusebenzayo nokuzinzile:

Ukuhlola okujwayelekile: okunezimbobo, okunezimbotshana ezincane, imbobo enkulu, imbobo encane kanye nemfucumfucu okungamaphutha kungabhekwa kanyekanye ngesivinini sokuvula okungenani okungu-0.15mm no-8m/min, futhi indawo enesici imakwa futhi isithombe esinesici siyabuyekezwa ukuze kuhlinzekwe isisekelo sokwahlulela okwenziwa ngesandla. .

Ukuhlolwa kwemfucumfucu: ekuhlolweni kokuqala kokumba, imfucumfucu ayiyona into egxilwe kakhulu yokunaka; Kodwa ngaphambi kwe-electroplating, imfucumfucu kufanele ibangele ukunakwa okwanele. Ukuze kuncishiswe ithonya lemfucumfucu kukhwalithi yemvula yethusi, abakhiqizi be-PCB ngokuvamile basusa imfucumfucu ngokuyigaya nokuhlanza ngaphambi kokufakwa kwe-electroplating, kodwa empeleni, ayikahlanzeki ngo-100%, umphumela wokuhlanza amapuleti aminyene kakhulu uba mubi kakhulu. Ngokwethiyori, kunezinsalela kuyo yonke i-PCB, ngakho-ke akunakwenzeka ukuhlola ngokugcwele zonke izimbobo kuyo yonke imikhiqizo, kuncike ekuhloleni okubukwayo okwenziwa ngesandla, kodwa umshini wokuhlola imbobo wenza kwenzeke.

Quality improvement: stability is the biggest advantage of equipment, stable product quality can enhance the brand influence of PCB factory, directly improve the ability of manufacturers to receive orders.

Okwesibili, ukusiza iminyango yokukhiqiza nekhwalithi ekuhlaziyweni kwezibalo zedatha:

Ukuhlaziya ithuluzi: kungahlaziya ukuchezuka okumaphakathi kobubanzi bembobo yokumba yamathuluzi okumba ahlukene ku-PCB, kuqaphe ukuguga okungase kube khona kwethuluzi lokumba ngesikhathi sangempela, kutholwe inkinga yethuluzi elingalungile ngesikhathi, futhi kugweme amapuleti emfucuza enqwaba.

Ukuhlaziywa kwamandla: ingaqoqa amandla okukhiqiza nsuku zonke, nyanga zonke, ngekota kanye nonyaka kanye nokusebenza kahle kokukhiqiza okumaphakathi, inikeze idatha yokuhlaziya yezindlela ezihlukahlukene zokulawula, futhi ithuthukise ukusebenza kwefekthri nekhono lokuphatha.

Ukuhlaziywa komshini: kungabala okukhiphayo, izinkinga ezihlukahlukene kanye nekhwalithi yerigi ngayinye, kuthuthukise ikhono lokuphatha imininingwane yomshini.

Okwesithathu, ukonga izindleko, isilinganiso esiphezulu se-input-output:

Izisebenzi zokuhlola: ngesisekelo sokuqinisekisa ikhwalithi nokwenza ngcono ukusebenza kahle, izisebenzi zokuhlola ezingu-2~3 zingasindiswa ngokwesilinganiso ngomshini wokuhlola imbobo.

I-Raw material: ingonga izindleko zefilimu, ezibaluleke kakhulu ezimbonini ezimaphakathi nezincane.

Customer complaint: it can save the cost of return order and fine caused by drilling defects. Although it is not as direct as the personnel and materials saved, the average annual cost saved is even higher than the purchasing cost of hole inspection machine.

Ngezidingo zekhwalithi ephakeme zabakhiqizi be-PCB yenqubo yokumba, ngaphansi kwengcindezi yokwanda kwezindleko zabasebenzi kanye nekhono elingenele lokuhlola kancane kancane, ukubaluleka komshini wokuhlola imigodi kuya ngokuya kuba sobala.

Ukusetshenziswa komshini wokuhlola imbobo sekuyiminyaka engaphezu kweyishumi, umsebenzi nokusebenza kwemishini bekulokhu kuthuthuka njalo, futhi izinga lokubambisana nokukhiqiza liseduze kakhulu. Ikakhulukazi ngokuthuthukiswa okusheshayo kwebhodi le-high-density, umshini wokuhlola imbobo uye waguqulwa kancane kancane usuka emshinini wokusiza wangempela waba umshini wokusekela oyinhloko. Ekuguqulweni kwemishini yezitshalo eziningi ezindala ze-PCB kanye nokulungiswa kwezitshalo ezintsha, ukuthandwa kwemishini yokuhlola umgodi kuzoba phezulu kakhulu.