1.Vuamzaus:
Cov vuam kis nquag muaj li ntawm 40kHz mus txog rau 15kHz. Qhov ntau ntawm cov tsis txaus ntawm daim ntawv thov yuav txiav txim siab cov khoom siv zoo tshaj plaws thiab zaus ua kom tiav qhov ntsuas qhov ua tau zoo rau qhov ntu.
Piv txwv li, rau cov rooj sib txoos me me, zoo nkauj (cov ntawv luam tawm ntawm lub rooj sib tham, microelectronic Cheebtsam, thiab lwm yam) nrog kev sib raug zoo, qhov ntau zaus (piv txwv li 40kHz) zoo dua raws li thov siab thiab ultrasonic vibrations tuaj yeem txo, nrog rau txhua lub cim ntawm Chav Kawm Ib qhov chaw.
Tsawg tsawg zaus (piv txwv li, 15kHz) yog qhov zoo rau nruab nrab-rau qhov loj-qhov loj thiab kuj tso cai rau vuam ntawm ntau cov softer plastics nrog ntau qhov chaw nyob deb (ntxiv rau ntawm no hauv qab) ntau dua li qhov muaj peev xwm ua tau nrog cov suab sib luag dua.
20kHz zaus yog cov feem ntau siv ultrasonic zaus rau plas sib dhos thiab muaj qhov siab tshaj plaws, vim nws tsim nyog rau ntau cov kev siv ntau yam thiab cov khoom siv thermoplastic.
2. Cov ntaub ntawv xav txog:
Hauv kev ua raws li lub hauv paus ntsiab lus ntawm ultrasonic kev sib dhos raws li tau hais los saum toj no, thermoplastics tuaj yeem ua tau ultrasonically sib sau ua ke vim tias lawv yaj nyob rau hauv ntau hom kub; whereas thermosetting cov ntaub ntawv - uas degrade thaum rhuab - yog qhov tsis tsim nyog rau ultrasonic sib dhos.
Weldability ntawm ib qho thermoplastic nyob ntawm nws cov txhav lossis cov qauv ntawm elasticity, ntom ntom, coefficient ntawm kev txhuam, thermal conductivity, kev kub thiab Tm lossis Tg.
Feem ntau, cov khoom siv txhaws tau nthuav qhia cov chaw zoo nyob deb vim cov khoom xa tau yooj yim. Cov yas mos mos, muaj cov qauv tsim qis ntawm elasticity, attenuate ultrasonic deeg thiab, xws li, nyuaj rau weld.
Hauv kev teev tseg, tsim cov chaw lossis chaw vuam, qhov rov qab yog qhov tseeb. Feem ntau, softer yas, qhov yooj yim dua rau nws yog phaj tsab, daim ntawv lossis chaw txuas hlau.
Tsis tas li ntawd raws li txoj cai, cov resins tau faib ua cov amorphous lossis crystalline. Ultrasonic zog kis tau yooj yim los ntawm amorphous resins, uas yog li ntawd qiv lawv tus kheej npaj rau ultrasonic vuam. Crystalline resins, ntawm qhov tod tes, tsis txhob yooj yim kis ultrasonic zog. Vim li no, thaum vuam crystalline resins, ntau dua qhov ntau thiab qhov yuav tsum tau siv zog, thiab qhov tshwj xeeb yuav tsum tau muab rau kev sib koom ua ke.
Cov hloov pauv uas tuaj yeem txuas ntxiv rau weldability yog cov ya raws cov ntsiab lus, pwm tso tawm cov khoom siv, cov roj nplua nyeem, cov yas ntim khoom, cov faus ntim cov khoom siv ntxiv, cov xim, nplaim taws thiab lwm yam ntxiv, nrog rau cov qib qib cob.
Zoo li no, nws yog ib qho tseem ceeb los txiav txim seb qhov degree ntawm kev sib xyaw ntawm cov ntaub ntawv tau raug muab sib txuas ua ke. Qee cov ntaub ntawv muaj qee qib ntawm qib sib xws, tab sis tsis yog txhua qib thiab tsim muaj feem xyuam, thiab qee cov tsis zoo txhua.
3. Kev sib koom tes tsim qauv:
Tej zaum qhov teeb meem tseem ceeb tshaj plaws ntawm ultrasonic vuam yog kev sib koom ua ke (qhov teeb tsa ntawm ob qho chaw mating). Nws yuav tsum tau txiav txim siab thaum cov ntu yuav tsum tau welded tseem nyob rau theem tsim thiab tom qab ntawd tau muab tso rau hauv cov ntu. Muaj ntau yam kev sib koom ua ke, txhua tus muaj cov yam ntxwv thiab qhov zoo. Lawv cov kev xaiv yog txiav txim siab los ntawm cov yam xws li hom yas, ntu kev ntsuas, qhov yuav tsum tau weld, machining thiab molding muaj peev xwm thiab cov ntsej muag zoo nkauj.
4. Cov txheej txheem thiab cov khoom siv tawv:
Nws yog qhov nyuaj rau overstate qhov tseem ceeb ntawm tshuab raj thiab kev kho thaum nws los cuag qhov ua tau zoo ntawm ultrasonic weld.
Muaj siv los ua ib qho kev nkag siab hauv kev lag luam uas tshuab raj thiab kho rau cov ntawv thov tshwj xeeb yuav tsum tau muab los ntawm cov chaw tsim khoom lag luam ntawm ib yam dab tsi hlau txuas tau siv. Niaj hnub no, cov kws ua cav nkag siab tias lawv muaj kev ywj pheej sib xyaw thiab sib phim: cov cuab yeej zoo tshaj plaws rau kev ua haujlwm tsis tas yuav ris lub npe tib yam uas yog ntawm xovxwm, tsuav yog yuav tsum vuam zaus.
Tooling fabrication cov ntaub ntawv xaiv muaj xws li txhuas, titanium, tawv tawv hlau thiab stainless hlau. Yam tseem ceeb xws li hom plastics raug muab txuas, qhov loj thiab ob qhov sib koom ua ke, weld lub zog thiab / lossis kav ntev yuav txiav txim siab cov khoom zoo tshaj plaws rau txoj haujlwm. Piv txwv li, rau kev ua kom ntev ntev, tawv tawv hlau tuaj yeem yog qhov kev xaiv zoo.
Kev tsim kho kom zoo kuj tseem ceeb. Lub fixture muaj ob lub hom phiaj tseem ceeb: txhawm rau txhawm rau ua ntu rau hauv qab lub tshuab raj thiab yuav txhawb ncaj qha hauv qab qhov chaw txuas. Qhov kev txhawb nqa no tseem suav nrog kev xav txog lub zog ultrasonic rov qab mus rau lub dav hlau weld, uas yog vim li cas thiaj kho tau ntau zaus los ntawm cov hlau.
Txog kev ntxiv dag zog thiab kev ua haujlwm ntev, carbide tig los chrome plating tuaj yeem siv. Cov khoom siv sib xyaw thiab cov cuab yeej rau cov ntu tsis xwm yeem tuaj yeem yog cov qauv tsim, nrog rau cov khoom siv sib txawv los txhawm rau, tuav thiab kho cov khoom tsis sib xws. Segmented thiab kho tau cov khoom siv kuj tuaj yeem tsim tau los xyuas kom muaj kev ruaj ntseg nrog cov pwm yas.
5. Vuam tsis:
Thaum lub sijhawm weld txheej txheem nws tus kheej, nyob ntawm seb hom hom kab ke siv, ntau yam txuas weld cuam tshuam qhov tshwm sim. Cov no suav nrog qhov ua kom dav / siab, txhais quab yuam thiab kam rau ua kev txwv, nyob ntawm seb cov vuam ua tiav los ntawm lub sijhawm, lub zog lossis nyob deb.
Qhov ua kom dav li cas tau siv los hais kom meej qhov ua kom nrov nkag tau. Cov kev hloov kho kom haum ntawm qhov dav thiab siab qhov teeb meem feem ntau tuaj yeem tsim rau tus maub los uas nias lub tshuab, thaum kho kom haum loj tuaj yeem ua tiav los ntawm kev siv lub zog thiab siab tswj.
Kev ua rau lub zog tswj chaw taw qhia lub siab uas xav kom mus txog rau qhov ua rau lub chaw ultrasonics. Kev hloov kho ntawm qhov ntsuas no nrog nqis, xws li ncua sij hawm, ua ntej pom tus qauv thiab ntsuas qhov chaw quab yuam / siab, tuaj yeem cuam tshuam ntev npaum li cas cov ntu tau sib chwv ua ntej cov chaw hauv ultrasonics.
Lub sijhawm ua haujlwm, xws li lub sijhawm weld (lub sijhawm rau lub sijhawm twg ultrasonic qhov kev tseeg tau siv rau qhov chaw) thiab tuav lub sijhawm (lub sijhawm uas cov siab tswj xyuas kom paub tseeb tias kev sib raug zoo ntawm ntu, tom qab lub sijhawm weld lub sijhawm thiab nrog ultrasonics tawm li ntawd cov hlau txuas tuaj yeem txias), ntxiv cawv thaum twg thiab ntev npaum li cas ultrasonics yuav tsum nyob twj ywm.
Zoo li no, qee cov kab ke yuav ua rau tus neeg siv los qhia meej txog lub zog - nrog kev txwv thiab qhov ntsuas ntawm lub ntsej muag calibration, piv txwv li - thaum qee qhov tseem yuav cia qhov chaw nyob deb - xws li nce ntxiv, ua ntej tawm mus, tsis muaj tseeb thiab txwv.
Raws li tuaj yeem pom, ntau qhov chaw txav mus los, yog tias koj yuav, tuaj rau hauv kev ua si thaum lub sijhawm ultrasonic welding. Manipulation ntawm cov ntsuas no yuav txhais tau qhov sib txawv ntawm qhov ua tau zoo weld thiab qhov tsis muaj txiaj ntsig weld lossis lub plhaw tawg.
