Single-excitation ultrasonic elliptic-vibration multi-vibrator material conveying device

Abstract

The invention discloses a single-excitation ultrasonic elliptic-vibration multi-vibrator material conveying device which is mainly used for accurately and precisely conveying strip materials. Multiple vibrators are adopted as vibration excitation bodies, and each vibrator comprises an ultrasonic vibration transducer, an elliptical vibration mode converter and a friction drive block arranged at the front end of the elliptical vibration mode converter; each ultrasonic vibration transducer comprises a bolt and a rear cover plate, piezoelectric ceramic pieces, an electrode slice and a front end cover sequentially sleeving the bolt, and the rear cover plate and the front cover plate are passed by the bolt to have the rear cover plate, the piezoelectric ceramic pieces, the electrode slice and the front end cover connected and pressed; each elliptical vibration mode converter is arranged at the front end of each ultrasonic vibration transducer and is of a wedge structure, and the elliptical vibration mode converters scan convert longitudinal ultrasonic vibration generated by the ultrasonic vibration transducers into longitudinal-flexural composite ultrasonic elliptic vibration of the tail ends of the elliptical vibration mode converters and the friction drive blocks. When the vibrators are operated at the same time, the strip materials are driven to move continuously.

Description

technical field [0001] The invention relates to the field of vibration precision conveying using the inverse piezoelectric effect of piezoelectric ceramics, in particular to a multi-vibrator material conveying device driven by single-excitation ultrasonic elliptical vibration. Background technique [0002] In the fields of automatic production, processing and assembly of medicine, chemical industry, food, machinery, material preparation, etc., the transmission and assembly of materials and parts have been using traditional low-frequency and high-amplitude electromagnetic vibration transmission devices. This device has more noise when working. The distribution accuracy is low, it is not easy to realize precise closed-loop control, and the power volume is small. These problems have always restricted the improvement of the overall performance of the precision transmission system. [0003] The rapid development and application of ultrasonic piezoelectric drive since the 1980s pr...

AI Technical Summary

Problems solved by technology

[0002] In the fields of automatic production, processing and assembly of medicine, chemical industry, food, machinery, material preparation, etc., the transmission and assembly of materials and parts have been using traditional low-frequency and high-amplitude electromagnetic vibration transmission devices. This device has more noise when working. Low delivery accuracy, difficult to achieve precise closed-loop control, and small power volume, these problems have always restricted the improvement of the overall performance of the precision transmission system

[0004] However, the existing traveling wave ultrasonic conveying devices have the disadvantages of large traveling wave attenuation, limited long-distance transportation, uneven distribution of materials in the conveying length, complex structure, low output power, difficult manufacturing, and high requirements for manufacturing and assembly. , high cost and short lifespan

These problems restrict their application in industrial production

Images