Na mmepe nke electronic ozi ụlọ ọrụ, ọnụ electronic ngwaahịa nwere elu na elu chọrọ maka unụ nke PCB ụlọ ọrụ. Ịkwọ ụgbọ mmiri bụ nzọụkwụ dị mkpa n’ichepụta PCB, nke emepụtara na dayameta oghere kacha nta nke 0.08mm, oghere oghere kachasị nke 0.1mm ma ọ bụ ọbụna ọkwa dị elu. Na mgbakwunye na ịme oghere, oghere akụkụ, oghere, oghere ndị nwere ọdịdị pụrụ iche, ụdị efere, wdg, ọ dị mkpa ka a nyochaa ya niile. Olee otú ịchọpụta mkpọpu àgwà nke PCB osisi rụọ ọrụ nke ọma na n’ụzọ ziri ezi aghọwo ihe dị mkpa njikọ iji hụ na àgwà nke ngwaahịa. Igwe nyocha oghere PCB bụ ngwa nyocha ngwa anya na-akpaghị aka nke ejiri na nyocha ogo nke mkpọpu ala. Ebumnuche nke akwụkwọ a bụ iji nyochaa ọrụ nke igwe nyocha oghere na usoro mkpọpu ma nye ahụmịhe ntụaka maka ndị nrụpụta PCB.

N’ime usoro ikpochapu PCB, ọ dị mkpa ijikwa nsogbu ndị nwere ike ịdị mma: porosity, leakage, displacement, dropping na-ezighị ezi, enweghị ntinye, nkwụsị nke oghere, mkpofu, n’ihu, oghere nkwụnye. Ka ọ dị ugbu a, usoro nchịkwa nke ndị na-emepụta ihe dị iche iche bụ isi iji mee ka usoro nhazi ahụ dịkwuo mma tupu ịkụnye ya ma mee ka nyocha ahụ sie ike mgbe ọ gbasasịrị. 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. N’iji nyocha ihe nkiri, onye ọ bụla na-egwupụta ihe nkiri na-emepụta ihe nkiri na-acha uhie uhie, nyocha site na pin na efere ngwaahịa edozi, nyocha akwụkwọ ntuziaka n’okpuru igbe ọkụ. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

Nsogbu ndị bụ isi bụ ndị a:

Nke mbụ, ihe nyocha chọrọ nke obere oghere enweghị ike ijide n’aka: omume mmepụta na-egosi na maka PCB nwere oghere opekempe ≥0.5mm, akwụkwọ ntuziaka nwere ike nweta nsonaazụ nyocha dị elu n’okpuru ebe n’ịhụ na ụfọdụ nrụpụta nrụpụta. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Site na mbelata nke oghere oghere, maka efere ngwaahịa dị n’okpuru 0.5mm, ikike nyocha nke anya mmadụ ga-agbada ngwa ngwa, maka efere ngwaahịa ≤0.25mm, akwụkwọ ntuziaka ọbụna njiri mara mma siri ike ịhụ.

Nke abụọ, arụmọrụ nke nyocha akwụkwọ ntuziaka na-ejedebe: arụmọrụ nke nyocha akwụkwọ ntuziaka na-emetụta kpọmkwem ọnụ ọgụgụ nke oghere na oghere kacha nta. Ahụmahụ mmepụta ihe n’ezie na-egosi na arụmọrụ a ga-ebelata nke ukwuu mgbe oghere ahụ karịrị 10000 na oghere kacha nta na-erughị 0.5mm. Nyocha akwụkwọ ntuziaka dabara adaba naanị maka nlele. Maka nnukwu njupụta dị elu, ọ gaghị ekwe omume ịkwado ịdị mma nke mkpọpu site na ntuziaka.

Nke atọ, nkwụsi ike nke àgwà enweghị ike ijide n’aka: ndị mmadụ ga-emetụta ahụmahụ, ọnọdụ, ike ọgwụgwụ, ọrụ na ihe ndị ọzọ, ọ na-esiri ike ịhụ nkwụsi ike nke àgwà. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

Iji dozie nsogbu ndị a dị n’elu, ọtụtụ ụlọ ọrụ PCB buru ibu anabatala oghere nyocha AOI akụrụngwa iji dochie ọrụ aka n’ọtụtụ buru ibu. Karịsịa maka ụlọ ọrụ ndị Japan na ndị Taiwan na-enweta ego, ọtụtụ afọ nke omume egosila ịdị irè nke usoro ọhụrụ a, nke kwesịrị nlebara anya na ntụaka nke ọtụtụ ndị na-emepụta PCB ụlọ.

Ngwa nyocha oghere AOI bụ nke akụrụngwa nyocha ngwa anya. Dị ka ihe oyiyi ụdị nke dị iche iche ntụpọ nke mkpọpu ala, ọ nwere ike kewaa: porous, obere oghere, nnukwu oghere, obere oghere, ihe fọdụrụnụ, oghere deviation na oghere udi. E kewara ya ụzọ abụọ: otu bụ igwe na-enyocha oghere, nke ọzọ bụ igwe nlele na nyocha (oghere-AOI). Na omume, e nwekwara X-ray na-enyocha igwe, nke a na-ejikarị maka nyocha nke oghere ndị kpuru ìsì na bọọdụ multi-layer, nke na-ekwekọghị n’ebumnobi nke nyocha jaket akwụkwọ ntuziaka na-abụghị nke nyocha nyocha. akwụkwọ a.

Dị ka PCB emepụta’ akụrụngwa kenha ahụmahụ, ọ na-atụ aro ka iji otutu setịpụ nke oghere elele igwe maka zuru nnyocha nke mbụ efere na ala ala, na-elekwasị anya na nnyocha nke oghere, ole na ole oghere, nnukwu oghere, obere oghere na irighiri ihe; A na-eji igwe nlele na nlele oghere maka nlele ntụpọ, na-elekwasị anya na mgbagha oghere. Njirimara nke ngwaọrụ abụọ a bụ ndị a:

Igwe na-enyocha oghere: uru dị ọnụ ala, nyocha ngwa ngwa ngwa ngwa, lelee 600mm × 600mm PCB nkezi nke 6 ~ 7 sekọnd, nwere ike ịghọta porous, obere oghere, oghere, obere oghere, nyocha ihe fọdụrụ. Ihe ọghọm bụ na ikike ịlele oghere oghere adịghị elu, ọ bụkwa naanị nnukwu ntụpọ nwere ike ịchọta. Dabere na ahụmịhe mmepụta nke onye nrụpụta, n’ozuzu RIGS 15 nwere igwe na-enyocha oghere 1.

Igwe na-enyocha oghere na nlele: uru bụ na enwere ike ịlele ihe niile. Ihe ọghọm bụ na ọnụahịa dị elu (ihe dị ka 3 ~ 4 ugboro nke igwe nyocha oghere), arụmọrụ nyocha dị ala, ọ na-ewe ọtụtụ nkeji ma ọ bụ karịa ka ịlele 1 ibe. 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. A na-eji ngwá ọrụ nyocha nke oghere tụnyere akwụkwọ nhazi nke mkpọpu mmiri, a na-ejikwa ihe nlele anya nke akwụkwọ ntuziaka tụnyere ihe nkiri ahụ. N’ihe gbasara ụkpụrụ nyocha, enwere ike izere nsogbu ndị na-eme ka ihe nkiri na-egwupụta ihe na-emepụta ihe, na ntụkwasị obi dị elu.

Nyocha teknụzụ nyocha PCB oghere

Ọrụ nke igwe na-enyocha oghere na usoro mkpọpu PCB na-egosipụta n’akụkụ ndị a:

Nke mbụ, nleba anya nleba anya nke ọma ma kwụsie ike:

Nleba anya nke oge: porous, obere porous, nnukwu oghere, obere oghere na ntụpọ ntụpọ nwere ike ịlele n’otu oge na ọsọ nke oghere kacha nta 0.15mm na 8m / min, na ebe ntụpọ ahụ na-akara akara ma na-enyocha ihe oyiyi ntụpọ ahụ iji nye usoro ikpe akwụkwọ ntuziaka. .

Nyocha irighiri ihe: na nyocha mbụ nke mkpọpu mmiri, irighiri ihe anaghị elekwasị anya nke ukwuu; Ma tupu electroplating, irighiri ihe kwesịrị ịkpata nlebara anya zuru oke. Iji belata mmetụta nke irighiri ihe na àgwà mmiri ozuzo ọla kọpa, ndị na-emepụta PCB n’ozuzu na-ewepụ ihe mkpofu site na-egweri na ihicha tupu electroplating, ma na omume, ọ ka na-adịghị 100% ọcha, ndị ọzọ elu njupụta efere ihicha mmetụta ka njọ. N’ụzọ doro anya, enwere ihe mkpofu na PCB ọ bụla, yabụ na ọ gaghị ekwe omume inyocha oghere niile na ngwaahịa niile, na-adabere na nyocha ọhụụ ntuziaka, mana igwe nyocha oghere na-eme ka o kwe omume.

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.

Nke abụọ, nyere ngalaba mmepụta na ịdị mma aka na nyocha ọnụ ọgụgụ data:

Ngwá ọrụ nyocha: ọ nwere ike nyochaa nkezi deviation nke mkpọpu oghere dayameta nke dị iche iche mkpọpu ngwá ọrụ na PCB, nyochaa ekwe omume mkpọpu ngwá ọrụ na ozugbo, chọta na-ezighị ezi ngwá ọrụ nsogbu na oge, na-ezere ogbe mkpofu efere.

Nyocha ikike: ọ nwere ike ịnakọta kwa ụbọchị, kwa ọnwa, nkeji nkeji na ikike mmepụta kwa afọ na nkezi mmepụta mmepụta, na-enye data nyocha maka ụzọ nchịkwa dị iche iche, ma melite ọrụ mmepụta ihe na ikike njikwa.

Nyocha igwe: nwere ike ịgụta mmepụta, nsogbu dị iche iche na ịdị mma nke rig ọ bụla, meziwanye ikike ijikwa nkọwa nke igwe.

Nke atọ, ichekwa ọnụ ahịa, oke ntinye-mpụta dị elu:

Ndị ọrụ nyocha: na nhazi nke iji hụ na ịdị mma na imeziwanye arụmọrụ, ndị ọrụ nyocha 2 ~ 3 nwere ike ịzọpụta na nkezi site na igwe nyocha oghere.

Ngwongwo ihe eji eme ihe: o nwere ike ichekwa ihe eji eme ihe nkiri, nke bara uru maka ulo oru ogbe na obere ogbe.

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.

Na PCB emepụta’ elu àgwà chọrọ maka mkpọ ala usoro, n’okpuru nrụgide nke na-abawanye ọrụ na-eri na nke nta nke nta ezughị akwụkwọ ntuziaka ikike, mkpa nke oghere nnyocha igwe na-aghọwanye doro anya.

Ojiji nke igwe nyocha nke oghere dị ihe karịrị afọ iri, ọrụ na arụmọrụ nke akụrụngwa na-akawanye mma mgbe niile, na ogo nke imekọ ihe ọnụ na mmepụta ahụ na-adịkwu nso. Karịsịa na mmepe ngwa ngwa nke bọọdụ njupụta dị elu, igwe na-enyocha oghere ejirila nke nta nke nta gbanwee site na ngwa inyeaka mbụ ka ọ bụrụ isi ihe nkwado. N’ime mgbanwe akụrụngwa nke ọtụtụ PCB ochie osisi na nkwadebe nke osisi ọhụrụ, ewu ewu nke igwe nyocha igwe ga-adịwanye elu.