Study on the Sheet Escape and Feeding Mechanism Using Ultrasonic Vibration (1st Report) – Design Concept and Its Experimental Investigation –
Sakiichi Okabe*, Yoshitugu Kamiya* and Takahiro Oda**
* Faculty of Technology, Kanazawa University, 2-40-20 Kotatsuno, Kanazawa, Ishikawa, 920 Japan
** Oki Electric Industry Co., Ltd., 3-1 Futaba-cho, Takasaki-shi, Gunma, 370 Japan
This paper describes sheet feeding method and its design concept using the ultrasonic vibration actuator. The ultrasonic vibration is generated by two sets of piezoelectric actuators. It is an elliptic vibration mode, which rotates two vibration modes in the Y-Z and X-Y planes. This paper also presents a direct drive method using vibratory rotor and an indirect drive method using the idling rotor about sheet feeding mechanism, and it verifies theoretical relations between amplitude UZ1 and sheet feeding speed VH ,VH* and feeding force FH ,FH*. As a result of fundamental experiments, it was proved that a sheet, such as paper and telephone card, could be easily fed using either of their methods and a the highly reliable and compact sheet feeding mechanism could be obtained.