Hom thiab lub luag haujlwm ntawm ultrasonic transducer
Ultrasonic transducer yog high-frequency mechanical vibration source thiab ua haujlwm ntawm ultrasonic vuam tshuab, uas yog, hluav taws xob lub zog lossis lub zog sib nqus ntawm cov tshuab hluav taws xob ultrasonic hloov pauv mus rau kev kho tshuab kev co ntawm tib zaus. Tam sim no, muaj ob lub tshuab hloov tsheb siv hauv cov tshuab ultrasonic welding, ib qho yog cov khoom siv magnetostrictive transducer, thiab lwm tus yog piezoelectric ceramic transducer.
Cov tshuab nqus hlau nplaum magnetostrictive tsawg nyob rau hauv qhov ua tau zoo, tus nqi tsim nyog siv hlau nplaum yog qhov yuav tsum tau ua, yog li ultrasonic vuam tshuab tam sim no siv.
Lub hauv paus ntsiab lus ntawm piezoelectric ceramic transducer yog ua raws li piezoelectric effect ntawm cov khoom siv siv lead ua, uas yog, cov khoom siv hluav taws xob piezoelectric. Kev tsim tawm ntawm piezoelectric ceramics yog tsuas yog siv rau ultrasonic welding. Thaum cov khoom siv no deformed hauv cov teb siav, cov nqi them yuav tsim rau sab hauv qhov chaw siv lead ua, thiab hluav taws xob hluav taws xob tau tsim hauv sab hauv qhov siv lead ua. Hloov siab, thaum lub sijhawm siv lead ua los ntawm ib qho hluav taws xob sab nraud, daim ntawv kub yog deformed. Qhov no hu ua cov nyhuv piezoelectric, raug xa mus rau qhov zoo hluav taws xob zoo lossis cov hluav taws xob sab nraud.
Ultrasonic transducer yog ib qho tub ntxhais ntawm kev siv ultrasonic kev co. Tus qauv tsim ntawm ultrasonic transducer muaj feem xyuam rau kev ua haujlwm ua haujlwm, ruaj khov thiab lub neej ntawm tus kws txuas. Feem ntau piezoelectric ceramic hloov khoom siv hauv khw. Raws li daim ntawv ntawm kev co, nws tuaj yeem muab faib ua radial vibration mode, longitudinal composite vibration mode, shear vibration mode, tuab kev vibration hom, thiab lwm yam. Thaum lub tshuab ultrasonic yas welder tiav, qhov siab tuab ntsug kev tseev kom ua. High-frequency kev co melting vuam txheej ntawm lub qaum thiab qis pwm ntawm lub workpiece tuaj yeem tau txais.
