Title :
Configuration of a 30-mm-diameter 94 kHz ultrasonic longitudinal vibration system for plastic welding
Author :
Tsujino, Jiromaru ; Hongoh, Misugi ; Yoshikuni, Masafumi ; Hashii, Hidekazu ; Ueoka, Tetsugi
Author_Institution :
Fac. of Eng., Kanagawa Univ., Yokohama, Japan
Abstract :
Vibration and welding characteristics of a 94 kHz ultrasonic plastic welding system are studied. The 94 kHz ultrasonic plastic welding system consists of a 30-mm-diameter bolt-clamped Langevin type PZT longitudinal transducers with four PZT rings, a stepped horn (vibration transform ratio N=3.0) with a supporting flange at a nodal position and a catenoidal horn (N=3.13) with a 8-mm-diameter welding tip. Maximum vibration velocity of the welding is 3.2 m/s (peak-to-zero value) at loaded condition. Welding characteristics of 1.0-mm-thick polypropylene sheet specimens using the 94 kHz welding system are studied. Using the 94 kHz system, weld strength more than 370 N per one welded area was obtained at vibration velocity 2.7 m/sp-0, welding time 0.8 s and static pressure 600 kPa.
Keywords :
lead compounds; piezoceramics; piezoelectric transducers; polymers; ultrasonic transducers; welding; 1 mm; 3.2 m/s; 30 mm; 600 kPa; 8 mm; 94 kHz; PZT; PbZrO3TiO3; bolt clamped Langevin type transducers; catenoidal horn; piezoelectric ceramic transducer; polypropylene sheet; stepped horn; ultrasonic longitudinal vibration system; ultrasonic plastic welding system; vibration velocity; Ceramics; Flanges; Frequency; Piezoelectric transducers; Plastics; Temperature measurement; Time measurement; Ultrasonic transducers; Vibration measurement; Welding;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293498
