Ki te whanaketanga o te ahumahi mōhiohio hiko, hua hiko kāpeka i teitei me teitei whakaritenga mo te whakamahine o PCB Ahumahi. Ko te keri he taahiraa nui i roto i te hanga PCB, kua whakawhanakehia ki te iti rawa te diameter o te kohao o te 0.08mm, te mokowā nui o te kohao o te 0.1mm te taumata teitei ake ranei. I tua atu i te whakahaere i nga rua, nga waahanga waahanga, nga awaawa, nga waahanga motuhake, te ahua o te pereti, me etahi atu, me tirotiro katoa. Me pehea te kite i te kounga keri o te poari PCB pai me te tika kua waiho hei hononga nui hei whakarite i te kounga o nga hua. Ko te miihini tirotiro poka PCB he taputapu tirotiro aunoa noa e whakamahia ana i roto i te tirotiro kounga o te keri. Ko te kaupapa o tenei pepa ko te tātari i te mahi o te miihini whakamatautau poka i roto i te mahi keri me te whakarato wheako tohutoro mo nga kaihanga PCB.

I roto i te tukanga keri PCB, he mea tika ki te whakahaere i nga raruraru o te kounga e whai ake nei: porosity, leakage, displacement, he keri, kore-koto, ngaro poka, ururua, mua, poka mono. I tenei wa, ko nga tikanga whakahaere o nga momo kaihanga ko te nuinga ki te whakarite i nga mahi keri i mua i te keri me te whakapakari i nga tikanga tirotiro i muri i te keri. 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. I roto i te whakamahi i te tirotiro kiriata, ia keri hua ka werohia he tauira kiriata whero, te tirotiro ma te titi me te pereti hua kua whakaritea, te tirotiro a-ringa i raro i te pouaka rama. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

The main problems are as follows:

Tuatahi, kaore e taea te whakamana i nga whakaritenga tirotiro o te aperture iti: ko nga mahi whakaputa e whakaatu ana mo te PCB me te iti o te kohao ≥0.5mm, ka taea e te pukapuka te whakatutuki i nga hua tirotiro teitei ake i raro i te kaupapa o te whakarite i te pai o te whakaputa. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Na te hekenga o te rahi o te aperture, mo te pereti hua kei raro iho i te 0.5mm, ka tere te heke o te kaha tirotiro o nga kanohi tangata, mo te pereti hua ≤0.25mm, he uaua ki te whakarite i te kounga o te tauira tauira.

Tuarua, he iti te kaha o te tirotiro a-ringa: ko te pai o te tirotiro a-ringa e pa ana ki te maha o nga rua me te iti o te waahi. The actual production experience shows that the efficiency will be significantly reduced when the hole is more than 10000 and the smallest hole is less than 0.5mm. Manual inspection is only suitable for sampling. Mo te pereti kiato teitei, kaore e taea te kii i te kounga o te keri ma te ringaringa.

Tuatoru, kaore e taea te whakamana i te pumau o te kounga: ka pa ki nga tangata te wheako, te ahua, te ngenge, te kawenga me etahi atu mea, he uaua ki te whakarite i te pumau o te kounga. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

Hei whakatau i nga raru o runga ake nei, he maha nga wheketere PCB nui kua tango i nga taputapu AOI tirotiro poka hei whakakapi i nga mahi a-ringa i roto i te whānuitanga nui. Ina koa mo nga umanga a Hapanihi me Taiwana, he maha nga tau o te mahi kua whakamatau i te whai huatanga o tenei tikanga hou, he pai te aro me te tohutoro a te maha o nga kaihanga PCB kaainga.

Ko nga taputapu tirotiro poka AOI no nga taputapu tirotiro aunoa. E ai ki te ahua o te ahua o nga hapa o te keri, ka taea te wehewehe ki: porous, iti te kohao, te kohao nui, te kohao iti, te toenga, te rereke o te kohao me te ahua o te kohao. Kua wehea kia rua nga momo: tetahi ko te miihini tirotiro Hole, ko tetahi atu ko te ine ine me te miihini tirotiro (poka-AOI). I roto i nga mahi, kei reira ano he miihini tirotiro X-ray, e whakamahia ana mo te tātaritanga o nga rua matapo kua tanumia me nga papa paparanga maha, kaore i te rite ki te kaupapa o te tirotiro i te koti kiriata a-ringa me te kore e uru ki te waahanga tātaritanga tenei pepa.

E ai ki te wheako rite taputapu PCB kaihanga ‘, e tūtohu ana ki te whakamahi i huinga maha o te mīhini arowhai poka mo te tirotiro tonu o te pereti tuatahi me te pereti raro, arotahi i runga i te tirohanga o rua, torutoru rua, rua nui, rua iti me te otaota; Ka whakamahia te miihini ine me te miihini tirotiro mo te tirotiro waahi, e aro ana ki te rereke o te kohao. Ko nga ahuatanga o nga taputapu e rua e whai ake nei:

Ko te miihini tirotiro poka: he iti te utu, he tere te tirotiro, tirohia te 600mm × 600mm PCB toharite o te 6 ~ 7 hēkona, ka taea te mohio ki te porous, te iti o te poka, te poka, te poka iti, te tirotiro i te toenga. Ko te kino ko te kaha ki te tirotiro i te waahi o te kohao kaore i te teitei, ka kitea nga hapa kino anake. E ai ki nga wheako whakangao o te kaihanga, ko te tikanga 15 RIGS kua rite ki te miihini tirotiro 1 poka.

Te ine me te miihini tirotiro i te waahi poka: ko te painga ko nga mea katoa ka taea te tirotiro. Ko te kino ko te utu nui (mo te 3 ~ 4 nga wa o te miihini tirotiro poka), he iti te pai o te tirotiro, he maha nga meneti ka roa ake ranei te tirotiro i te waahanga 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. Ko nga taputapu tirotiro poka ka whakatauritehia ki nga tuhinga hoahoa o te keri, ka whakatauritehia te tirohanga a-ringa ki te kiriata. I runga i nga tikanga mo te tirotiro, ka taea te karo i nga raruraru i puta mai i nga hapa keri kiriata, ka nui ake te pono.

PCB poka whakamātautau mīhini tātari hangarau

Ko te mahi a te miihini tirotiro poka i runga i te mahi keri PCB ka kitea i roto i nga waahanga e whai ake nei:

Tuatahi, he pai me te pumau te tirotiro i te kounga keri:

Ko te tirotiro i nga wa katoa: he porous, he iti ake te porous, he kohao nui, he kohao iti me nga koha ka taea te tirotiro i te wa kotahi i te tere o te kohao iti 0.15mm me te 8m/min, ka tohua te waahi koha me te arotake i te ahua koha ki te whakarato i te kaupapa whakatau a-ringa. .

Te tirotiro i nga parapara: i te tirohanga tuatahi o te keri keri, ehara nga otaota i te tino aro nui; Engari i mua i te whakakikoruatia, me nui te aro o nga otaota. I roto i te tikanga ki te whakaiti i te mana o te otaota i runga i te kounga o te ua parahi, kaihanga PCB te tikanga tango otaota na roto i te huri me te horoi i mua i electroplating, engari i roto i te mahi, ko reira tonu e kore 100% ma, te nui atu kiato pereti horoi pānga he kino. Ko te tikanga, he mahanga kei roto i ia PCB, na reira kaore e taea te tirotiro katoa i nga kohao katoa i runga i nga hua katoa, ma te whakawhirinaki ki te tirotiro a-ringa, engari ma te miihini tirotiro poka ka taea.

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.

Tuarua, awhina i nga tari whakaputa me te kounga i roto i te tātari tatauranga raraunga:

Te tātari taputapu: ka taea e ia te tātari i te inenga toharite o te diameter poka keri o nga taputapu keri rereke i roto i te PCB, te aro turuki i nga kakahu taputapu keri ka taea i roto i te waa tuuturu, kitea te raru taputapu he i te waa, ka karo i nga pereti ururua puranga.

Te tātari kaha: ka taea e ia te kohikohi i ia ra, ia marama, ia marama, ia marama, ia tau me te kaha o te whakaputanga toharite, te whakarato raraunga tātari mo nga momo tikanga whakahaere, me te whakapai ake i te mahi wheketere me te kaha whakahaere.

Te tātari miihini: ka taea te tatau i nga putanga, nga momo me nga raru o te kounga o ia rig, te whakapai ake i te kaha ki te whakahaere i nga korero o te miihini.

Tuatoru, te penapena utu, teitei te ōwehenga whakauru-puta:

Nga kaimahi tirotiro: i runga i te kaupapa o te whakarite i te kounga me te whakapai ake i te pai, 2 ~ 3 nga kaimahi tirotiro ka taea te whakaora i te toharite ma te miihini tirotiro poka.

Raw Material: Ka taea e ia te penapena i nga utu o te kiriata, he mea nui ake mo nga wheketere reo me te iti.

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.

Ki nga whakaritenga kounga teitei a nga kaihanga PCB mo te mahi keri, i raro i te pehanga o te piki haere o te utu mahi me te ngoikore o te kaha ki te tirotiro a-ringa, kei te tino kitea te hiranga o te miihini tirotiro poka.

Ko te whakamahinga o te miihini tirotiro poka kua neke atu i te tekau tau, ko te mahi me te mahi o nga taputapu kei te whakapai tonu, a, ko te tohu o te mahi tahi me te hanga he tata tonu. Otirā ki te whanaketanga tere o te poari teitei, kua huri haere te miihini tirotiro poka mai i nga taputapu awhina taketake hei taputapu tautoko matua. I te huringa taputapu o te maha o nga tipu tawhito PCB me te whakarite i nga tipu hou, ka nui ake te rongonui o nga taputapu miihini whakamatautau poka.