Ngokombiko wokucubungula umjovo womjovo: Ngaphansi kwesisekelo sokuthi imakethe yamanje iya ngokuya ihlukahluka, imboni yokubumba umjovo nayo iqhubeka njalo futhi iyanwetshwa, kanye nobuchwepheshe obusha obufana nemjovo yemijovo eminingi, ukusiza igesi, isikhunta lamination, kanye ne-co-injection molding sekuvelile. Ngokufanayo, ukucaciswa kwemishini yokujova umjovo nakho kuthuthuka kumikhombandlela emibili-emikhulu-yamathani imishini yokubumba umjovo nemishini yokubumba umjovo omncane ivuselelwa njalo.
Ukuthuthukiswa kobuchwepheshe be-micro-injection kuyashesha
Eminyakeni yakamuva, isidingo semikhiqizo emincane sikhuphukile. Kungakhathaliseki ukuthi kusembonini ye-elekthronikhi, imboni yokubuka noma imboni yezempi, kunesidingo esikhulu sezingxenye ezincane zomjovo obunjiwe. Le mikhiqizo ebunjiwe yomjovo inezidingo eziphakeme kakhulu ngosayizi nokunemba.
Ngaphansi kwesisekelo esinjalo, inqubo ye-micro-injection nayo ibhekene nezinselelo ezinkulu. Izingxenye ezibunjiwe zomjovo zingahlangabezana kanjani nezidingo zosayizi wezinga le-micron ngenkathi futhi zinokubukeka okuhle nokusebenza? Kokulandelayo, sizokwethula kafushane umehluko phakathi kwe-micro-injection molding kanye nendabuko yokubumba umjovo ngokuya ngesikhunta, imishini, izinto zokwakha, nezinqubo.
Ukucutshungulwa kwesikhunta namaphuzu asemqoka
Ngokuya ngesikhunta, umjovo omncane udinga imishini yokucubungula ephakeme kakhulu kunokwakheka komjovo wendabuko.
Micro umjovo udini ngokuvamile has izitayela ezimbili isikhunta ukucutshungulwa: owokuqala ukusebenzisa esibukweni inhlansi machining. Ukuze kuqinisekiswe ukucacisa okuphezulu, kungcono ukusebenzisa i-graphite electrode ye-EDM, ngoba ukulahleka kwama-graphite electrode kuphakeme kunalokho kwama-electrode wethusi ajwayelekile. Incane kakhulu.
Indlela yesibili esetshenziswa kakhulu yokucubungula ukusebenzisa i-electroforming. Inqubo ye-electroforming ingaqinisekisa ukunemba okuphezulu kakhulu, kepha okubi ukuthi umjikelezo wokucubungula mude, umgodi ngamunye kufanele ucutshungulwe ngokuzimela, futhi uma kukhona ukulimala okuncane ekukhiqizeni, ngeke kulungiswe. , Ingabuyisela kuphela amaphoyinti okulimaza.
Ngokuya kwesikhunta, ukushisa kwesikhunta kubuye kube yipharamitha ebaluleke kakhulu yomjovo omncane. Lapho ubhekene namakhasimende aphezulu, umkhuba ojwayelekile njengamanje ukuboleka umqondo wokubumba umjovo we-gloss ephezulu bese wethula uhlelo lokushisa nokupholisa ngokushesha.
Ngokwethiyori, izinga lokushisa eliphakeme lesikhunta lisiza kakhulu ngomjovo omncane, ngokwesibonelo, lingavimbela ubunzima bokugcwalisa udonga oluncane kanye nokushoda kwezinto ezibonakalayo, kepha izinga lokushisa eliphakeme kakhulu lesikhunta lizoletha izinkinga ezintsha, ezifana nokwandisa umjikelezo nokuncipha kokuncipha ngemuva kokuvulwa kwesikhunta . Ngakho-ke, kubaluleke kakhulu ukwethula uhlelo olusha lokulawula ukushisa kwesikhunta. Ngesikhathi senqubo yokubumba umjovo, izinga lokushisa lesikhunta lingakhuphuka (elingadlula iphuzu lokuncibilika kwepulasitiki elisetshenzisiwe), ukuze ukuncibilika kusheshe kugcwalise umgodi futhi kuvimbele ukushisa kokuncibilika kunciphe ngesikhathi senqubo yokugcwalisa. Kuyashesha futhi kubangela ukugcwaliswa okungaphelele; futhi lapho kudilizwa phansi, izinga lokushisa lesikhunta lingancishiswa ngokushesha, ligcinwe kushisa elingaphansi kancane kunokushisa okushisayo kwepulasitiki, bese isikhunta sivulwa sikhishwe.
Ngaphezu kwalokho, ngoba ukubunjwa kwe-micro-injection kungumkhiqizo onekhwalithi yama-milligram, uma uhlelo olujwayelekile lwe-gating lusetshenziselwa ukujova umkhiqizo, noma ngabe ngemuva kokulungiswa nokwenza ngcono, isilinganiso sobukhulu bomkhiqizo nezinto ezisetshenzisweni lohlelo luse 1: 10. Kuphela okungaphansi kuka-10% wezinto zokusebenza okujojowe emikhiqizweni emincane, kukhiqize inani elikhulu lokuhlanganiswa kohlelo lwesango, ngakho-ke umjovo omncane kufanele usebenzise uhlelo olushubisayo lomgijimi.
Izinto zokukhetha izinto
Mayelana nokukhethwa kwezinto ezibonakalayo, kunconywa ukuthi amanye ama-plastiki ajwayelekile wobunjiniyela ane-viscosity ephansi nokuzinza okuhle okushisayo angakhethwa esigabeni sokuqala sentuthuko.
Ukukhethwa kwezinto ezisezingeni eliphansi le-viscosity kungenxa yokuthi i-viscosity yokuncibilika incane ngesikhathi senqubo yokugcwalisa, ukumelana kwalo lonke uhlelo lokungena kuncane kakhulu, isivinini sokugcwalisa sishesha, futhi ukuncibilika kungagcwaliswa kahle emgodini, futhi izinga lokushisa elincibilikile ngeke lehliswe kakhulu. , Ngaphandle kwalokho kulula ukwakha amalunga abandayo kumkhiqizo, futhi ukuma kwamangqamuzana kuncane ngesikhathi senqubo yokugcwalisa, futhi ukusebenza komkhiqizo otholiwe kufana ncamashi.
Uma ukhetha ipulasitiki ene-viscosity ephezulu, hhayi kuphela ukugcwaliswa kuhamba kancane, kepha futhi nesikhathi sokudla siside. Ukugeleza kwesheya okubangelwa ukondla kuzovumelanisa kalula ama-molecule wamaketanga ekuqondeni kokugeleza kweshear. Kulokhu, isimo sokuqondisa sizoba lapho sesipholile ngaphansi kwephoyinti lokuthambisa. Kumisiwe, futhi le ndlela efriziwe ngezinga elithile kulula ukudala ingcindezi yangaphakathi yomkhiqizo, futhi ibangele nokuqhekeka kwengcindezi noma ukusonteka komkhiqizo.
Isizathu sokuqina kokushisa okushisayo kwepulasitiki ukuthi okokusebenza kuhlala kumgijimi oshisayo isikhathi eside noma kwehliswa kalula ngokushisa ngesenzo sokugunda sesikulufu, ikakhulukazi kuplastiki abazwela ukushisa, noma esikhathini esifushane somjikelezo, ngenxa yomjovo wezinto ezibonakalayo Inani lincane, futhi nesikhathi sokuhlala ohlelweni lokufaka igate lide ngokwedlulele, okudala ukonakala okukhulu kwepulasitiki. Ngakho-ke, amapulasitiki azwela ukushisa awafanele umjovo omncane.
Amaphuzu okukhethwa kwemishini
Mayelana nokukhethwa kwemishini, njengoba ubukhulu bezingxenye ezifakiwe ezincane kuyimikhiqizo esezingeni le-micron, kuyalulekwa ukusebenzisa umshini wokujova onomthamo womjovo wama-milligram.
Iyunithi lomjovo walolu hlobo lomshini wokujova ngokuvamile lisebenzisa inhlanganisela ye-screw-plunger. Ingxenye yesikulufu ifaka kuplastikhi kokuqukethwe, bese i-plunger ifaka ukuncibilika kulomgodi. Umshini wokubumba umjovo we-screw plunger ungahlanganisa ukunemba okuphezulu kwesikulufa ngejubane elikhulu lemishini ye-plunger ukuqinisekisa ukunemba kwenqubo yokukhiqiza kanye nesivinini sokugcwalisa.
Ngaphezu kwalokho, lolu hlobo lomshini wokujova luvame ukwakhiwa indlela yokugandelela, uhlelo lokujova, umshini wokubuyisa umoya womoya, indlela yokuhlola ikhwalithi kanye nohlelo lokufaka okuzenzakalelayo. Uhlelo oluhle lokuhlola ikhwalithi lungaqinisekisa isivuno semikhiqizo ebunjiwe yomjovo we-micro-precision futhi iqaphe ukushintshashintsha kwepharamitha phakathi nayo yonke inqubo.
Amaphuzu ayisihluthulelo wenqubo yokubumba umjovo
Ekugcineni, sibheka izidingo ze-micro-injection molding ngokwenqubo yokubumba umjovo. Enqubeni yokubumba umjovo, kudingeka sicabangele uphawu lwegesi nokucindezela kwesango, imvamisa ukubumba umjovo wesigaba esiningi kuyadingeka ukuqinisekisa ukuthi okokusebenza kungagcwaliswa esimweni sokugeleza okuzinzile.
Ngaphezu kwalokho, futhi udinga ukubheka isikhathi sokubamba. Ukucindezela okuncane kakhulu kuzobangela ukuthi umkhiqizo unciphise, kepha ukucindezela okukhulu kakhulu kokubamba kuzodala ukugxila kokucindezeleka nobukhulu obukhulu.
Ngaphezu kwalokho, isikhathi sokuhlala sokwakheka kwempahla kushubhu yezinto nakho kudinga ukubhekwa ngokuqinile. Uma ngabe okokusebenza kuhlala kuthubhu ebonakalayo isikhathi eside, kuzodala ukwehla kwento futhi kuthinte nomsebenzi womkhiqizo. Kunconywa ukwenza ukulawulwa okujwayelekile kwepharamitha ekuphathweni kwepharamitha yenqubo. Kuhle ukwenza ukuqinisekiswa kwe-DOE komkhiqizo ngamunye ngaphambi kokukhiqizwa ngobuningi. Zonke izinguquko ekukhiqizweni kufanele ziphinde zihlolwe usayizi nokusebenza.
Njengegatsha lenkambu yokubumba umjovo, i-micro-injection iyathuthuka ekuqondeni ngokunemba okuphezulu, izidingo zokusebenza okuphezulu, nezidingo zokubukeka okuphezulu. Kuphela ngokulawulwa okuqinile kwesikhunta, okokusebenza, okokusebenza, izinqubo nezinye izinqubo kanye nokwenza ngcono okuqhubekayo kobuchwepheshe lapho imakethe ingagculiseka khona. Ukuthuthukiswa kwensimu. (Lo mbhalo ungowokuqala ngokubumba umjovo, sicela ukhombise umthombo wokuphrinta kabusha!)
