Tare da haɓaka masana’antar bayanan lantarki, samfuran lantarki masu ƙarfi suna da buƙatu mafi girma da haɓaka don haɓakawa PCB masana’antu. Hakowa mataki ne mai mahimmanci a masana’antar PCB, wanda aka haɓaka zuwa mafi ƙarancin diamita na 0.08mm, matsakaicin tazarar rami na 0.1mm ko ma matakin mafi girma. Baya ga gudanar da ramuka, ramukan sassa, ramuka, ramuka na musamman, siffar faranti, da sauransu, duk suna buƙatar bincika. Yadda za a gane hakowa ingancin PCB hukumar nagarta sosai da kuma daidai ya zama muhimmiyar mahada don tabbatar da ingancin kayayyakin. PCB rami dubawa inji ne kawai atomatik Tantancewar dubawa kayan aiki amfani da ingancin duba hakowa. Manufar wannan takarda shine don nazarin aikin injin gwajin rami a cikin aikin hakowa da kuma samar da ƙwarewar tunani ga masana’antun PCB.

A cikin tsarin hakowa na PCB, ya zama dole don sarrafa matsalolin ingancin masu zuwa: porosity, leakage, ƙaura, hakowa ba daidai ba, rashin shiga, asarar rami, sharar gida, gaba, toshe rami. A halin yanzu, hanyoyin sarrafawa na masana’antun daban-daban sun fi dacewa don daidaita tsarin hakowa kafin hakowa da ƙarfafa hanyoyin dubawa bayan hakowa. 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. A cikin yin amfani da duban fim, kowane samfurin hakowa ya fitar da samfurin fim ɗin ja, dubawa ta hanyar fil da farantin samfur da aka gyara, duban gani na hannu a ƙarƙashin akwatin haske. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

The main problems are as follows:

Na farko, ba za a iya tabbatar da buƙatun dubawa na ƙananan buɗe ido ba: aikin samarwa yana nuna cewa don PCB tare da ƙaramin buɗaɗɗen ≥0.5mm, jagorar na iya cimma sakamakon bincike mafi girma a ƙarƙashin yanayin tabbatar da ingantaccen samarwa. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Tare da raguwar girman budewa, don farantin samfurin da ke ƙasa da 0.5mm, ikon dubawa na idanun ɗan adam zai ragu da sauri, don farantin samfurin ≤0.25mm, manual ko da samfurin ingancin yana da wahala a tabbatar.

Na biyu, ingantaccen aikin dubawa na hannu yana iyakance: ingancin aikin dubawar hannu yana da alaƙa kai tsaye da adadin ramuka da mafi ƙarancin buɗe ido. Haƙiƙanin ƙwarewar samarwa yana nuna cewa za a rage ƙimar inganci sosai lokacin da rami ya fi 10000 kuma mafi ƙarancin rami ya gaza 0.5mm. Binciken da hannu ya dace kawai don samfur. Don babban farantin karfe, ba shi yiwuwa a tabbatar da ingancin hakowa ta hanyar hannu.

Na uku, ba za a iya tabbatar da kwanciyar hankali na inganci ba: mutane za su shafi kwarewa, yanayi, gajiya, alhakin da sauran dalilai, yana da wuya a tabbatar da kwanciyar hankali na inganci. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

Domin magance matsalolin da ke sama, yawancin masana’antun PCB masu girma sun karɓi kayan aikin AOI na duba rami don maye gurbin aikin hannu a cikin babban kewayon. Musamman ga kamfanoni na Jafananci da Taiwan, shekaru da yawa na yin aiki sun tabbatar da ingancin wannan sabuwar hanyar, wanda ya cancanci kulawa da tunani na masana’antun PCB na gida da yawa.

Kayan aikin duba ramin AOI na kayan aikin dubawa ne na atomatik. Dangane da nau’in hoton nau’in lahani daban-daban na hakowa, ana iya raba shi zuwa: porous, ƙarancin rami, babban rami, ƙaramin rami, saura, ɓarna rami da siffar rami. An kasu kashi biyu: daya shine na’urar duba Hole, ɗayan kuma na’urar auna Hole da inspection machine (hole-AOI). A aikace, akwai kuma wani X-ray dubawa inji, wanda aka yafi amfani da bincike na binne makafi ramukan da Multi-Layer allon, wanda shi ne saba da haƙiƙa na manual film jacket dubawa kuma ba ya cikin bincike ikon yinsa. wannan takarda.

A cewar PCB masana’antun’ kayan aiki matching gwaninta, an bada shawarar yin amfani da mahara sets na rami dubawa inji domin cikakken dubawa na farko farantin da kasa farantin, mayar da hankali a kan duba ramukan, ‘yan ramuka, manyan ramuka, kananan ramuka da tarkace; Ana amfani da injin aunawa da na’ura don duba tabo, yana mai da hankali kan karkacewar ramin. Siffofin na’urorin biyu sune kamar haka:

Hole dubawa inji: da abũbuwan amfãni ne low price, azumi dubawa yadda ya dace, duba wani 600mm × 600mm PCB matsakaita na 6 ~ 7 seconds, iya gane da porous, kasa rami, rami, kananan rami, saura dubawa. Rashin hasara shi ne cewa ikon duba matsayi na ramin ba shi da girma, kuma kawai ana iya gano lahani mai tsanani. Dangane da ƙwarewar samarwa na masana’anta, gabaɗaya RIGS 15 suna sanye da injin bincika rami 1.

Na’ura mai aunawa da aunawa rami: fa’idar ita ce ana iya bincika duk abubuwa. Rashin hasara shi ne cewa farashin yana da girma (kimanin 3 ~ 4 sau na injin binciken rami), ingancin dubawa yana da ƙasa, yana ɗaukar mintuna da yawa ko ma ya fi tsayi don duba 1 yanki. 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. Ana kwatanta kayan aikin binciken rami tare da takaddun ƙira na hakowa, kuma ana kwatanta binciken gani na hannu tare da fim ɗin. Dangane da ka’idar dubawa, za a iya kauce wa matsalolin da aka haifar da kurakuran hako fim, kuma abin dogara ya fi girma.

PCB rami gwajin inji fasahar bincike

Matsayin injin bincika rami akan tsarin hakowa na PCB yana nunawa a cikin waɗannan bangarorin:

Na farko, ingantaccen kuma tsayayyiyar duba ingancin hakowa:

Dubawa na yau da kullun: ramuka, ƙarancin ramuka, babban rami, ƙaramin rami da lahanin tarkace ana iya bincika su lokaci guda a cikin saurin mafi ƙarancin buɗewa 0.15mm da 8m/min, kuma ana yiwa alamar lahani kuma ana duba hoton lahani don samar da tushen hukumci na hannu. .

Binciken tarkace: a cikin binciken hakowa na farko, tarkace ba shine abin da ya fi mayar da hankali ba; Amma kafin wutar lantarki, tarkace ya kamata ya haifar da isasshen hankali. Domin rage tasirin tarkace a kan ingancin hazo na jan karfe, masana’antun PCB gabaɗaya suna cire tarkace ta hanyar niƙa da tsaftacewa kafin yin amfani da wutar lantarki, amma a aikace, har yanzu ba 100% mai tsabta ba ne, ƙarin tasirin tsaftacewa mai yawa ya fi muni. A ka’ida, akwai tarkace a cikin kowane PCB, don haka ba shi yiwuwa a yi cikakken bincika duk ramukan akan duk samfuran, dogaro da duban gani na hannu, amma injin binciken ramin yana sa ya yiwu.

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.

Na biyu, taimaka samarwa da sassan inganci a cikin ƙididdigar ƙididdiga na bayanai:

Kayan aikin bincike: yana iya bincika matsakaicin karkatar da diamita na hakowa na kayan aikin hakowa daban-daban a cikin PCB, saka idanu akan yuwuwar kayan aikin hakowa a cikin ainihin lokacin, gano matsalar kayan aiki mara kyau a cikin lokaci, da guje wa faranti na sharar gida.

Binciken iya aiki: yana iya tattara kullun, kowane wata, kwata da ƙarfin samarwa na shekara da matsakaicin matsakaicin samarwa, samar da bayanan bincike don hanyoyin sarrafawa daban-daban, da haɓaka aikin masana’anta da ikon gudanarwa.

Binciken na’ura: na iya ƙididdige fitarwa, iri-iri da matsalolin ingancin kowane rig, haɓaka ikon sarrafa bayanan injin.

Na uku, ceton farashi, babban rabon shigarwa-sabuntawa:

Ma’aikatan dubawa: a kan yanayin tabbatar da inganci da inganta ingantaccen aiki, 2 ~ 3 ma’aikatan dubawa za a iya ceton su a matsakaici ta hanyar injin binciken rami.

Raw kayan: zai iya ajiye kayan kayan kayan fim, wanda ya fi ma’ana ga matsakaici da ƙananan masana’antu.

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.

Tare da PCB masana’antun ‘mafi girma ingancin bukatun ga hakowa tsari, a karkashin matsa lamba na karuwa aiki kudin da kuma sannu a hankali m manual dubawa ikon, muhimmancin rami dubawa inji yana ƙara bayyana.

Yin amfani da injin binciken rami ya kasance fiye da shekaru goma, aiki da aikin kayan aiki yana ci gaba da ingantawa, kuma matakin haɗin gwiwa tare da samarwa yana da kusanci. Musamman tare da saurin haɓaka babban jirgi mai yawa, injin binciken ramukan an canza shi a hankali daga kayan aikin taimako na asali zuwa kayan aiki mai mahimmanci. A cikin canjin kayan aiki na yawancin tsofaffin shuke-shuke na PCB da kuma shirye-shiryen sababbin tsire-tsire, shahararren kayan aikin gwajin rami zai kasance da yawa.