Miaraka amin’ny fampandrosoana ny indostrian’ny fampahalalam-baovao elektronika, ny vokatra elektronika terminal dia manana fepetra avo lenta kokoa ho an’ny fanatsarana ny PCB orinasa. Ny fandavahana dia dingana manan-danja amin’ny famokarana PCB, izay novolavolaina ho amin’ny savaivony lavaka kely indrindra amin’ny 0.08mm, ny elanelan’ny lavaka ambony indrindra amin’ny 0.1mm na avo kokoa aza. Ho fanampin’ny fampandehanana ny lavaka, ny lavaka misy ampahany, ny lavaka, ny lavaka miendrika manokana, ny endriky ny takelaka, sns., dia mila jerena avokoa. Ny fomba hamantarana ny kalitaon’ny fandavahana ny birao PCB mahomby sy marina dia lasa rohy manan-danja mba hahazoana antoka ny kalitaon’ny vokatra. PCB lavaka fisafoana milina dia mandeha ho azy Optical fisafoana fitaovana ampiasaina amin’ny fanaraha-maso ny kalitaon’ny fandavahana. Ny tanjon’ity taratasy ity dia ny famakafakana ny fiasan’ny milina fitsapana lavaka amin’ny dingan’ny fandavahana ary manome traikefa momba ny mpanamboatra PCB.

Ao amin’ny dingan’ny fandavahana PCB, dia ilaina ny mifehy ireto olana manaraka ireto: porosity, leakage, fifindran’ny, diso fandavahana, tsy miditra, lavaka very, fako, anoloana, plug lavaka. At present, the control methods of various manufacturers are mainly to standardize the drilling process before drilling and strengthen the inspection means after drilling. 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. Amin’ny fampiasana ny fisafoana sarimihetsika, ny fandavahana vokatra tsirairay dia mamoaka santionany sarimihetsika mena, ny fisafoana amin’ny alàlan’ny pin sy ny takelaka vokatra raikitra, ny fanaraha-maso maso eo ambanin’ny boaty hazavana. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

The main problems are as follows:

Voalohany, tsy azo antoka ny fepetra fanaraha-maso ny aperture kely: ny fomba famokarana dia mampiseho fa ho an’ny PCB miaraka amin’ny aperture kely indrindra ≥0.5mm, ny boky dia afaka mahatratra ny valin’ny fisafoana ambony kokoa eo ambanin’ny foto-kevitra hiantohana ny fahombiazan’ny famokarana. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Miaraka amin’ny fihenan’ny haben’ny aperture, ho an’ny takelaka vokatra eo ambanin’ny 0.5mm, dia hihena haingana ny fahaiza-manara-maso ny mason’olombelona, ​​​​ho an’ny takelaka vokatra ≤0.25mm, sarotra ny miantoka ny kalitaon’ny sampling.

Faharoa, voafetra ny fahombiazan’ny fanaraha-maso amin’ny tanana: ny fahombiazan’ny fanaraha-maso amin’ny tanana dia mifandray mivantana amin’ny isan’ny lavaka sy ny aperture kely indrindra. 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. Ho an’ny takelaka avo lenta dia tsy azo antoka ny kalitaon’ny fandavahana amin’ny alàlan’ny manual.

Fahatelo, tsy azo antoka ny fahamarinan-toeran’ny kalitao: ny olona dia hisy fiantraikany amin’ny traikefa, ny toe-po, ny havizanana, ny andraikitra ary ny antony hafa, sarotra ny miantoka ny fahamarinan’ny kalitao. 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. Indrindra ho an’ny orinasa Japoney sy Taiwan vatsian’ny orinasa, ny fanao nandritra ny taona maro dia nanaporofo ny fahombiazan’ity fomba vaovao ity, izay mendrika ny fiheverana sy ny fanondroan’ny mpanamboatra PCB an-trano maro.

Ny fitaovana fanaraha-maso ny lavaka AOI dia an’ny fitaovana fanaraha-maso optika mandeha ho azy. Araka ny endriky ny sary ny kilema isan-karazany ny fandavahana, dia azo zaraina ho: porous, kely lavaka, lehibe lavaka, kely lavaka, sisa, lavaka fivilian-dalana sy ny lavaka endrika. Izy io dia mizara ho karazany roa: ny iray dia Hole inspection machine, ny iray hafa dia Hole fandrefesana sy inspection machine (hole-AOI). Amin’ny fampiharana, misy ihany koa ny X-ray fisafoana milina, izay indrindra ampiasaina amin’ny famakafakana ny nalevina lavaka jamba sy multi-sosona hazo fisaka, izay tsy mifanaraka amin’ny tanjona ny boky fampianarana palitao palitao fisafoana ary tsy an’ny famakafakana sehatra ny ity taratasy ity.

Araka ny PCB mpanamboatra ‘fitaovana mifanandrify traikefa, izany no nanolorana azy ho mampiasa andiana maro ny lavaka fisavana milina ho an’ny fanaraha-maso feno ny voalohany lovia sy ny ambany lovia, mifantoka amin’ny fisafoana ny lavaka, vitsy lavaka, lavaka lehibe, lavaka kely sy ny potipoti-javatra; Ny milina fandrefesana toerana misy lavaka dia ampiasaina amin’ny fisavana toerana, mifantoka amin’ny fivilian’ny lavaka. 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. Ny tsy fahampiana dia ny fahafahana manamarina ny toeran’ny lavaka dia tsy avo, ary ny lesoka lehibe ihany no mety ho hita. Araka ny traikefan’ny famokarana tena izy, amin’ny ankapobeny dia RIGS 15 no fitaovana amin’ny milina fisavana lavaka 1.

Ny toeran’ny lavaka fandrefesana sy ny milina fisavana: ny tombony dia azo jerena ny entana rehetra. Ny tsy fahampiana dia ny vidiny dia avo (eo amin’ny 3 ~ 4 heny amin’ny milina fisafoana lavaka), ny fahombiazan’ny fanaraha-maso dia ambany, mila minitra maromaro na lava kokoa ny manamarina ny ampahany 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. The hole inspection equipment is compared with the design documents of drilling, and the manual visual inspection is compared with the film. In terms of the inspection principle, the problems caused by the film drilling errors can be avoided, and the reliability is higher.

PCB hole testing machine technology analysis

Ny anjara asan’ny milina fisavana lavaka amin’ny dingan’ny fandavahana PCB dia hita taratra amin’ireto lafiny manaraka ireto:

Voalohany, mahomby sy marin-toerana fanaraha-maso ny kalitaon’ny fandavahana:

Fanaraha-maso mahazatra: porous, kely porous, lavaka lehibe, lavaka kely sy potipoti-javatra dia azo jerena miaraka amin’ny hafainganam-pandehan’ny aperture kely indrindra 0.15mm sy 8m/min, ary ny toerana misy kilema dia voamarika ary ny sary kilema dia averina mba hanomezana fototra fitsarana. .

Fanaraha-maso ny potipoti-javatra: amin’ny fisafoana fandavahana voalohany, ny potipoti-javatra dia tsy ifantohan’ny saina indrindra; Fa alohan’ny electroplating, potipoti-javatra dia tokony hiteraka saina ampy. Mba hampihenana ny fiantraikan’ny potipoti-javatra eo amin’ny kalitaon’ny rotsak’orana varahina, ny mpanamboatra PCB amin’ny ankapobeny dia manaisotra ny potipoti-javatra amin’ny fikosoham-bary sy fanadiovana alohan’ny electroplating, fa amin’ny fampiharana, dia mbola tsy 100% madio, ny vokatra fanadiovana lovia avo kokoa dia ratsy kokoa. Ara-teorika, misy potika ao amin’ny PCB rehetra, noho izany dia tsy azo atao ny manara-maso tanteraka ny lavaka rehetra amin’ny vokatra rehetra, miantehitra amin’ny fanaraha-maso maso amin’ny tanana, fa ny milina fisafoana lavaka no mahatonga izany.

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.

Faharoa, ampio ny sampana famokarana sy kalitao amin’ny famakafakana statistika momba ny angona:

Fitaovana famakafakana: dia afaka mandinika ny antonony fivilian-dava ny fandavahana savaivony ny samy hafa fandavahana fitaovana ao amin’ny PCB, manara-maso ny mety fandavahana fitaovana mitafy amin’ny tena fotoana, mahita ny diso fitaovana olana ara-potoana, ary misoroka batch fako lovia.

Famakafakana ny fahaiza-manao: afaka manangona isan’andro, isam-bolana, isan-telovolana ary isan-taona ny fahafaha-mamokatra sy ny fahombiazan’ny famokarana antonony, manome angon-drakitra momba ny fomba fanaraha-maso isan-karazany, ary manatsara ny fiasan’ny orinasa sy ny fahaiza-mitantana.

Famakafakana milina: afaka manisa ny vokatra, ny karazany ary ny olana momba ny kalitaon’ny rig tsirairay, manatsara ny fahaizana mitantana ny antsipirian’ny milina.

Fahatelo, fitsitsiana vola, tahan’ny fidirana-mamoaka avo:

Mpiasan’ny fisafoana: eo amin’ny sehatry ny fiantohana ny kalitao sy ny fanatsarana ny fahombiazany, ny mpiasan’ny fisafoana 2 ~ 3 dia azo vonjena amin’ny antsalany amin’ny milina fisafoana lavaka.

Akora manta: afaka mamonjy ny vidin’ny sarimihetsika, izay misy dikany kokoa ho an’ny orinasa antonony sy kely.

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.

Miaraka amin’ny fepetra takian’ny mpanamboatra PCB ho an’ny dingan’ny fandavahana, eo ambanin’ny fanerena ny fampitomboana ny vidin’ny asa sy ny tsy fahampian’ny fahaiza-manaon’ny tanana, ny maha-zava-dehibe ny milina fisafoana lavaka dia mihamiharihary.

Ny fampiasana ny milina fisafoana lavaka dia efa mihoatra ny folo taona, ny fiasa sy ny fahombiazan’ny fitaovana dia mihatsara hatrany, ary ny haavon’ny fiaraha-miasa amin’ny famokarana dia miha akaiky kokoa. Indrindra amin’ny fivoarana haingana ny birao avo lenta, ny milina fisafoana lavaka dia niova tsikelikely avy amin’ny fitaovana fanampiny tany am-boalohany ho fitaovana fanohanana fototra. Ao amin’ny fiovam-po amin’ny fitaovana maro ny PCB tranainy sy ny fanomanana ny zava-maniry vaovao, ny lazan’ny lavaka fitsapana milina fitaovana dia ho ambony kokoa.