Method for monitoring the quality of ultrasonic welding
AssigneeLisa Draexlmaier GmbH
InventorsFelix Klimas, Thomas Herzing, Lutz Lehmann, Daniel Zemann
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Abstract
A method for monitoring the quality of an ultrasonic weld includes monitoring a vibration behavior during a joining process with respect to an actual value of a vibration frequency and/or a vibration amplitude of at least one joining partner of joining partners involved in the joining process. A tool of an ultrasonic welding device is used in the joining process, and at least one measuring device is configured to quantify mechanical vibrations. The detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined set value as reference value.
Claims16
A method for monitoring quality of an ultrasonic weld, the method comprising:
- monitoring a vibration behavior during a joining process with respect to an actual value of at least one of:
- at least one of a vibration frequency and a vibration amplitude of at least one joining partner of joining partners involved in the joining process;
- and
- at least one of a vibration frequency and a vibration amplitude of a tool of an ultrasonic welding device used in the joining process,
- by measuring with at least one measuring device configured to quantify mechanical vibrations,
- wherein a detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined target value as a reference value.
Dependencies are inferred from the claim text.