Plaub theem ntawm ultrasonic welding
Xyoo tsis ntev los no, nrog kev thov loj ntawm cov yas thiab cov ntaub ntawv ntawm cov khoom lag luam hauv kev tsim khoom thiab lub neej txhua hnub, nrog rau txoj kev loj hlob sai ntawm cov khoom siv hluav taws xob thiab kev tawm tshiab ntawm cov tshuab hluav taws xob siab, cov tshuab yas ultrasonic yas vuam tshuab yog yam ntxwv los ntawm lawv cov vuam ceev tau nrawm thiab vuam seam. Qhov zoo ntawm qhov zoo, yooj yim automation, thiab kev tsim nyog rau huab hwm coj ntau tau siv dav thiab dhau los ua cov khoom siv feem ntau siv yas vuam yas.
1. Lub ntsiab cai thiab txheej txheem ntawm ultrasonic vuam
Lub hauv paus ntsiab lus ntawm ultrasonic yas vuam tshuab yog siv ultrasonic zaus kev siv tshuab kev co (zaus yog 10 ~ 70kHz, amplitude yog 1 ~ 250μm) ua rau cov khoom siv yas, ua rau cov cua kub hauv zos nyob hauv siab (cua sov yog vim muaj cov txiaj ntsig ntawm cov nplaim thiab molecular txhuam) Qhov tshwm sim) thiab melting los ua lub weld. Cov txheej txheem vuam ultrasonic tau muab faib ua 4 theem:
Sijhawm 1: Lub taub hau vuam hu rau feem, nias thiab pib tshee. Lub tshav kub ntawm kev sib txhuam melts lub zog-kev coj ua tav, thiab lub yaj ntws mus rau hauv qhov sib koom ua ke. Raws li qhov kev ncua deb ntawm ob ntu poob, vuam hloov chaw (qhov qis ntawm qhov kev ncua deb ntawm ob ntu vim yog ntws ntawm yaj) pib nce ntxiv. Lub vuam txav chaw nce ntxiv sai sai thaum xub thawj, thiab tom qab ntawd maj mam poob thaum lub zog hluav taws xob qhia kev ua haujlwm sib kis thiab kis tau rau thaj chaw ntawm qis dua. Hauv lub xeev txoj kev txhuam cov theem, cov cua sov yog tsim vim qhov kev sib txhuam ntawm lub zog ntawm ob qhov chaw thiab sab hauv kev sib txhuam. Kev sib txhuam cua sov ua rau cov khoom siv polymer ua kom sov so rau nws qhov chaw melting. Tus nqi calorific nyob ntawm ntau zaus ntawm kev nqis tes ua, qhov dav thiab siab.
Qhov thib ob theem: qhov nce ntawm qhov nrawm nrawm ua rau qhov nce ntawm vuam hloov chaw thiab kev sib cuag ntawm cov chaw ntawm ob ntu. Ib txheej melted txheej yog tsim nyob rau theem no, thiab lub thickness ntawm txheej melted nce vim cua sov txuas ntxiv. Cov kub ntawm qib no yog tsim los ntawm viscous dissipation.
Qeb thib peb: qhov tuab ntawm txheej daws nyob rau hauv weld tseem tsis hloov pauv thiab nrog rau qhov ntsuas kub tsis tu ncua, lub xeev khov kho tshwm sim.
Theem 4: Tom qab lub sijhawm tsim lossis lub zog tshwj xeeb, qib lub zog lossis qhov deb tau mus txog, lub hwj chim txiav tawm, ultrasonic kev co nres, thiab theem plaub pib. Qhov siab tswj tuav yog li ntawd ib sab ntxiv kom yaj yog zawm tawm ntawm qhov ua kom nto. Qhov chaw siab tshaj plaws tau mus txog thaum lub weld txias thiab solidified, thiab intermolecular diffusion tshwm sim.
