Igwe na-ebi akwụkwọ na-ere ahịa mado bụ ihe dị mkpa akụrụngwa na n'ihu ngalaba nke SMT akara, tumadi na-eji stencil ibipụta solder mado na kpọmkwem mpe mpe akwa, mma ma ọ bụ ọjọọ solder mado obibi, ozugbo na-emetụta ikpeazụ solder àgwà.Ndị na-esonụ na-akọwa teknuzu ihe ọmụma nke na-ebi akwụkwọ igwe usoro parameters ntọala.
1. Nrụgide squeegee.
The squeegee nrụgide kwesịrị ịdabere na n'ezie mmepụta ngwaahịa chọrọ.Nrụgide dị oke obere, enwere ike ịnwe ọnọdụ abụọ: squeegee na usoro nke ịga n'ihu na ike ala dịkwa ntakịrị, ga-eme ka nkwụsị nke ọnụọgụ nke ezughị ezu na-ebipụta;nke abụọ, squeegee adịghị nso n'elu stencil, na-ebipụta n'ihi ịdị adị nke obere ọdịiche dị n'etiti squeegee na PCB, na-abawanye ụba nke mbipụta.Tụkwasị na nke ahụ, nrụgide squeegee dị ntakịrị ga-eme ka stencil dị elu na-ahapụ akwa akwa akwa akwa akwa, dị mfe ime ka ndịna-ese foto na-arapara na ntụpọ mbipụta ndị ọzọ.N'ụzọ megidere nke ahụ, na squeegee mgbali bụ oke ibu ga-adị mfe na-eduga solder mado obibi bụ oke mkpa, na ọbụna imebi stencil.
2. Scraper akụkụ.
Scraper akụkụ bụ n'ozuzu 45 ° ~ 60 °, solder mado na ezi mpịakọta.Ogo nke nkuku nke scraper na-emetụta nha nke ike kwụ ọtọ nke scraper na mado ihe na-ere ahịa, obere akụkụ ahụ, na-eme ka ike kwụ ọtọ.Site n'ịgbanwe nkuku scraper nwere ike ịgbanwe nrụgide nke scraper na-emepụta.
3. Squeegee ike
Ịdị ike nke squeegee ga-emetụtakwa ọkpụrụkpụ nke ihe nrịbama e biri ebi.Mpekere dị nro dị nro ga-eduga na tapawa sink solder, yabụ kwesịrị iji squeegee siri ike ma ọ bụ squeegee metal, na-ejikarị igwe anaghị agba nchara.
4. Ọsọ mbipụta
A na-edobe ọsọ obibi akwụkwọ ka ọ bụrụ 15 ~ 100 mm / s.Ọ bụrụ na ọsọ na-adị ngwa ngwa, viscosity na-agbazinye ihe dị ukwuu, ọ dịghị mfe ịhapụ mbipụta ahụ, ma na-emetụta ọrụ obibi akwụkwọ.Ọsọ bụ oke ngwa ngwa, na squeegee site template oghere oge dị mkpụmkpụ, na solder mado enweghị ike n'ụzọ zuru ezu penetrated n'ime oghere, mfe ime ka solder mado adịghị eju ma ọ bụ ntapu nke ntụpọ.
5. oghere mbipụta
Oghere mbipụta na-ezo aka n'ebe dị anya n'etiti ala ala nke stencil na elu PCB, enwere ike kewaa mbipụta stencil na kọntaktị na mbipụta na-abụghị kọntaktị.A na-akpọ mbipụta Stencil nke nwere oghere dị n'etiti PCB na-enweghị kọntaktị, oghere n'ozuzu nke 0 ~ 1.27mm, ọ dịghị ụzọ mbipụta mbipụta akwụkwọ a na-akpọ mbipụta kọntaktị.Kpọtụrụ obibi stencil vetikal nkewa nwere ike ime ka ebipụta àgwà emetụta Z obere, karịsịa maka ezi pitch solder mado obibi.Ọ bụrụ na ọkpụrụkpụ stencil kwesịrị ekwesị, a na-ejikarị mbipụta kọntaktị eme ihe.
6. Hapụ ọsọ
Mgbe squeegee mezuru ọrịa strok ibipụta, ọsọ ọsọ nke stencil na-ahapụ PCB ka a na-akpọ ọsọ nbibi.Ndozi kwesịrị ekwesị nke ọsọ ntọhapụ, nke mere na stencil na-ahapụ PCB mgbe enwere usoro nkwụsịtụ dị mkpirikpi, nke mere na a na-ahapụ tapawa nke si na oghere stencil kpamkpam (demoded), iji nweta Z kacha mma solder mado ndịna-emeputa.Ọsọ nkewa nke PCB na stencil ga-enwe mmetụta dị ukwuu na mmetụta obibi akwụkwọ.The demoulding oge bụ oke ogologo, mfe na ala nke stencil residual solder mado;Demulding oge dị mkpụmkpụ, ọ bụghị conducive ka ziri ezi solder mado, na-emetụta ya doo anya.
7. Stencil ihicha ugboro
Ichacha stencil bụ ihe na-eme ka ọ dị mma nke mbipụta, na-ehicha ala nke stencil na usoro obibi akwụkwọ iji kpochapụ unyi na ala, nke na-enyere aka igbochi PCB mmetọ.A na-ejikarị ethanol anhydrous eme ihe dị ka ngwọta ihicha.Ọ bụrụ na e nwere ihe fọdụrụ solder mado na oghere nke stencil tupu mmepụta, ọ ga-asacha tupu ojiji, na iji hụ na ọ dịghị ihicha ngwọta na-anọgide, ma ọ ga-emetụta soldering nke solder mado.A na-ekwukarị na a ga-eji aka na-ehicha stencil ahụ na stencil na-ehichapụ akwụkwọ kwa nkeji 30, a ga-ehichapụkwa stencil na ultrasonic na mmanya mgbe emepụtara ya iji hụ na ọ dịghị ihe nkwụnye ihe fọdụrụ na oghere stencil.
Oge nzipu: Dec-09-2021