Design and Experimental Study of Ultrasonic Vibration Feeding Device With Double Symmetrical Structure

Abstract

In view of the limitations of traditional feeder driving mode in bulk material conveying, a new scheme of ultrasonic vibration feeding device with double symmetrical axis structure is proposed based on the existing traveling wave ultrasonic material conveying device. The outer sides of the upper and lower straight beam sections of the symmetrical conveying vibrator contain convex tooth structures, and piezoelectric ceramic sheets are pasted on the inner side; Based on the piezoelectric driving principle and the quarter wavelength principle, the conveying vibrator is dynamically designed, the influence of geometric size on the vibrator frequency is analyzed, the bending vibration mode of the vibrator is selected as 18 order, and the principle prototype of ultrasonic vibration feeding device is made. The resonant frequency difference measured in the experiment is close to that obtained by theoretical analysis, Moreover, the amplitude distribution of the conveying vibrator tooth surface is basically consistent with the finite element analysis results, and the influence law of material types on the conveying rate is compared and analyzed. The test results show that the ultrasonic vibration feeding device has a certain conveying capacity, the conveying rate is adjustable in a certain range, has high control accuracy, and meets the engineering application.

Keywords

• Vibratory feeding device
• symmetric structure
• ring type piezoelectric vibrator
• traveling wave
• ultrasonic vibration