Frequency characteristics of ultrasonic plastic welding (27 kHz to 180 kHz ultrasonic plastic welding systems)

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Abstract

Welding characteristics and temperature rises at plastic welding part over frequency range from 27 kHz to 180 kHz were studied. Ultrasonic plastic welding systems of 27, 40, 67, 94, 150 and 180 kHz were developed and direct welding characteristic of lapped plastic sheets were measured. The temperature rises at welding surfaces of lapped 1.0-mm-thick polypropylene and polymethyl methacrylate plates were measured using thermocouples inserted between plate specimens. And also, temperature rise distributions in cross sections of the lapped plate specimens were measured using a thermotracer. The longitudinal vibration systems used for ultrasonic plastic welding consisted of a bolt-clamped Langevin type longitudinal vibration source using two or four piezoelectric ceramic (PZT) rings, a stepped horn and a catenoidal horn with a 4-mm- or 8-mm-diameter welding tip. Using higher frequency system, temperature rise measured at the welding part were higher. Maximum temperature rise measured using thermocouples and a thermotracer was over 350°C under excessive condition. Copyright © 2007 by The Japan Society of Mechanical Engineers.

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APA

Tsujino, J., Hongoh, M., Yoshikuni, M., Miura, H., & Ueoka, T. (2007). Frequency characteristics of ultrasonic plastic welding (27 kHz to 180 kHz ultrasonic plastic welding systems). JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing, 49(3), 634–641. https://doi.org/10.1299/jsmec.49.634

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