Pẹlu awọn idagbasoke ti itanna alaye ile ise, ebute ẹrọ itanna awọn ọja ni ti o ga ati ki o ga awọn ibeere fun isọdọtun ti PCB ise. Liluho jẹ igbesẹ pataki ni iṣelọpọ PCB, eyiti o ti ni idagbasoke si iwọn ila opin iho ti o kere ju ti 0.08mm, aaye iho ti o pọju ti 0.1mm tabi paapaa ipele ti o ga julọ. Ni afikun si ifọnọhan awọn iho, awọn iho apakan, awọn iho, awọn iho apẹrẹ pataki, apẹrẹ awo, ati bẹbẹ lọ, gbogbo wọn nilo lati ṣayẹwo. Bii o ṣe le rii didara liluho ti igbimọ PCB daradara ati ni deede ti di ọna asopọ pataki lati rii daju didara awọn ọja. PCB iho ayewo ẹrọ jẹ o kan laifọwọyi opitika ayewo ẹrọ lo ninu awọn didara ayewo ti liluho. Idi ti iwe yii ni lati ṣe itupalẹ iṣẹ ti ẹrọ idanwo iho ni ilana liluho ati pese iriri itọkasi fun awọn aṣelọpọ PCB.

Ninu ilana liluho PCB, o jẹ dandan lati ṣakoso awọn iṣoro didara ti o ṣeeṣe: porosity, jijo, iṣipopada, liluho ti ko tọ, aisi ilaluja, pipadanu iho, egbin, iwaju, iho plug. Ni lọwọlọwọ, awọn ọna iṣakoso ti ọpọlọpọ awọn aṣelọpọ jẹ nipataki lati ṣe iwọn ilana liluho ṣaaju liluho ati teramo awọn ọna ayewo lẹhin liluho. 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. Ni lilo iṣayẹwo fiimu, liluho ọja kọọkan jade ni apẹẹrẹ fiimu pupa kan, ayewo nipasẹ pin ati awo ọja ti o wa titi, ayewo wiwo Afowoyi labẹ apoti ina. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

The main problems are as follows:

Ni akọkọ, awọn ibeere ayewo ti iho kekere ko le ṣe iṣeduro: adaṣe iṣelọpọ fihan pe fun PCB pẹlu iho ti o kere ju ≥0.5mm, afọwọṣe le ṣaṣeyọri awọn abajade ayewo ti o ga julọ labẹ ipilẹ ti aridaju ṣiṣe iṣelọpọ kan. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Pẹlu idinku ti iwọn iho, fun awo ọja ti o wa ni isalẹ 0.5mm, agbara ayewo ti oju eniyan yoo kọ ni kiakia, fun awo ọja ≤0.25mm, Afowoyi paapaa didara iṣapẹẹrẹ jẹra lati rii daju.

Keji, awọn ṣiṣe ti Afowoyi ayewo ti wa ni opin: awọn ṣiṣe ti Afowoyi ayewo ti wa ni taara jẹmọ si awọn nọmba ti iho ati awọn kere iho. 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. Fun awo iwuwo giga, ko ṣee ṣe lati ṣe iṣeduro didara liluho nipasẹ afọwọṣe.

Kẹta, iduroṣinṣin ti didara ko le ṣe idaniloju: awọn eniyan yoo ni ipa nipasẹ iriri, iṣesi, rirẹ, ojuse ati awọn ifosiwewe miiran, o ṣoro lati rii daju pe iduroṣinṣin ti didara. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

In order to solve the above problems, many LARGE PCB factories have adopted hole inspection AOI equipment to replace manual labor in a large range. Paapa fun awọn ile-iṣẹ Japanese ati awọn ile-iṣẹ ti Taiwan ti n ṣe inawo, ọpọlọpọ awọn ọdun ti adaṣe ti ṣe afihan imunadoko ti ọna tuntun yii, eyiti o tọsi akiyesi ati itọkasi ti ọpọlọpọ awọn aṣelọpọ PCB ile.

AOI iho ayewo ẹrọ je ti laifọwọyi opitika ayewo ẹrọ. Ni ibamu si awọn aworan fọọmu ti awọn orisirisi abawọn ti liluho, o le wa ni pin si: la kọja, kere iho, ti o tobi iho, kekere iho, iyokù, iho iyapa ati iho apẹrẹ. O pin si awọn oriṣi meji: ọkan jẹ ẹrọ ayewo Iho, ekeji jẹ wiwọn Iho ati ẹrọ ayewo (iho-AOI). Ni iṣe, ẹrọ ayewo X-ray tun wa, eyiti o jẹ lilo ni pataki fun itupalẹ awọn ihò afọju ti a sin ati awọn igbimọ ọpọ-Layer, eyiti ko ni ibamu pẹlu idi ti ayewo jaketi fiimu afọwọṣe ati pe ko wa si ipari itupalẹ ti iwe yi.

Gẹgẹbi iriri ibaramu awọn ohun elo PCB ẹrọ, o niyanju lati lo ọpọlọpọ awọn apẹrẹ ti ẹrọ ti n ṣayẹwo iho fun ayewo ni kikun ti awo akọkọ ati awo isalẹ, ni idojukọ lori ayewo awọn iho, awọn iho diẹ, awọn iho nla, awọn iho kekere ati idoti; Iwọn ipo ipo iho ati ẹrọ ayẹwo ni a lo fun ayẹwo iranran, ni idojukọ lori iyapa iho. The characteristics of the two devices are as follows:

Hole checking machine: the advantages are low price, fast inspection efficiency, check a 600mm×600mm PCB average of 6~7 seconds, can realize the porous, less hole, hole, small hole, residual inspection. Alailanfani ni pe agbara lati ṣayẹwo ipo iho ko ga, ati pe awọn abawọn to ṣe pataki nikan ni a le rii. Ni ibamu si awọn olupese ká gangan gbóògì iriri, ni gbogbo 15 RIGS ni ipese pẹlu 1 iho yiyewo ẹrọ.

Iwọn ipo iho ati ẹrọ ṣayẹwo: anfani ni pe gbogbo awọn ohun kan le ṣayẹwo. Alailanfani ni pe iye owo naa ga (nipa awọn akoko 3 ~ 4 ti ẹrọ ayẹwo iho), ṣiṣe ayẹwo jẹ kekere, o gba to iṣẹju pupọ tabi paapaa gun lati ṣayẹwo nkan 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. Awọn ohun elo ayewo iho ti wa ni akawe pẹlu awọn iwe apẹrẹ ti liluho, ati ayewo wiwo Afowoyi ni akawe pẹlu fiimu naa. Ni awọn ofin ti ilana ayewo, awọn iṣoro ti o ṣẹlẹ nipasẹ awọn aṣiṣe liluho fiimu le ṣee yago fun, ati pe igbẹkẹle ga julọ.

PCB iho igbeyewo ẹrọ ọna ẹrọ onínọmbà

Ipa ti ẹrọ iṣayẹwo iho lori ilana liluho PCB jẹ afihan ni awọn aaye wọnyi:

Ni akọkọ, ṣiṣe daradara ati iduroṣinṣin iṣayẹwo didara liluho:

Ayẹwo igbagbogbo: la kọja, ti o kere ju, iho nla, iho kekere ati awọn abawọn idoti ni a le ṣayẹwo nigbakanna ni iyara ti iho ti o kere ju 0.15mm ati 8m / min, ati ipo abawọn ti samisi ati pe aworan abawọn jẹ atunyẹwo lati pese ipilẹ idajọ afọwọṣe. .

Ayẹwo idoti: ni iṣayẹwo liluho akọkọ, idoti kii ṣe idojukọ ti akiyesi julọ; Sugbon ki o to electroplating, idoti yẹ ki o fa to akiyesi. Lati le dinku ipa ti idoti lori didara ojoriro Ejò, awọn aṣelọpọ PCB gbogbogbo yọ idoti kuro nipasẹ lilọ ati mimọ ṣaaju ṣiṣe itanna, ṣugbọn ni iṣe, ko tun jẹ mimọ 100%, ipa mimọ iwuwo giga diẹ sii buru si. Ni imọ-jinlẹ, awọn ajẹkù ni gbogbo PCB, nitorinaa ko ṣee ṣe lati ṣayẹwo ni kikun gbogbo awọn iho lori gbogbo awọn ọja, ti o da lori ayewo wiwo Afowoyi, ṣugbọn ẹrọ ayewo iho jẹ ki o ṣee ṣe.

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.

Keji, ṣe iranlọwọ iṣelọpọ ati awọn apa didara ni itupalẹ iṣiro data:

Onínọmbà Ọpa: o le ṣe itupalẹ iyatọ apapọ ti iwọn ila opin iho liluho ti awọn irinṣẹ liluho oriṣiriṣi ni PCB, ṣe atẹle ohun elo liluho ti o ṣeeṣe ni akoko gidi, wa iṣoro ọpa ti ko tọ ni akoko, ati yago fun awọn awo egbin ipele.

Onínọmbà agbara: o le gba lojoojumọ, oṣooṣu, idamẹrin ati agbara iṣelọpọ lododun ati ṣiṣe iṣelọpọ apapọ, pese data itupalẹ fun ọpọlọpọ awọn ọna iṣakoso, ati ilọsiwaju iṣẹ iṣelọpọ ati agbara iṣakoso.

Itupalẹ ẹrọ: le ka abajade, orisirisi ati awọn iṣoro didara ti rigi kọọkan, mu agbara lati ṣakoso awọn alaye ti ẹrọ naa.

Ẹkẹta, fifipamọ iye owo, ipin igbewọle-giga:

Awọn oṣiṣẹ ayewo: lori ipilẹ ti idaniloju didara ati imudara ṣiṣe, 2 ~ 3 eniyan ayewo le wa ni fipamọ ni apapọ nipasẹ ẹrọ ayẹwo iho.

Ohun elo aise: o le fipamọ iye owo ohun elo ti fiimu, eyiti o ni itumọ diẹ sii fun awọn ile-iṣẹ alabọde ati kekere.

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.

Pẹlu PCB tita ‘ti o ga didara awọn ibeere fun liluho ilana, labẹ awọn titẹ ti jijẹ laala iye owo ati ki o maa inadequate Afowoyi ayewo agbara, awọn pataki ti iho ayewo ẹrọ di increasingly kedere.

Awọn lilo ti Iho ayewo ẹrọ ti wa ni siwaju sii ju ọdun mẹwa, awọn iṣẹ ati awọn iṣẹ ti awọn ẹrọ ti a ti nigbagbogbo imudarasi, ati awọn ìyí ti ifowosowopo pẹlu isejade jẹ siwaju ati siwaju sii sunmọ. Paapa pẹlu idagbasoke iyara ti igbimọ iwuwo giga, ẹrọ ayewo iho ti yipada ni diėdiė lati ohun elo iranlọwọ atilẹba sinu ohun elo atilẹyin bọtini. Ni awọn ẹrọ transformation ti ọpọlọpọ awọn PCB atijọ eweko ati igbaradi ti titun eweko, awọn gbale ti iho igbeyewo ẹrọ ẹrọ yoo jẹ siwaju ati siwaju sii ga.