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公开(公告)号：US20220023978A1
公开(公告)日：2022-01-27
申请号：US17497343
申请日：2021-10-08
发明人： Felix Klimas , Thomas Herzing , Lutz Lehmann , Daniel Zemann
摘要： 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.
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公开(公告)号：US11931818B2
公开(公告)日：2024-03-19
申请号：US17497390
申请日：2021-10-08
发明人： Felix Klimas , Thomas Herzing , Lutz Lehmann , Daniel Zemann
CPC分类号： B23K20/10 , B23K20/106 , B23K31/125 , G01N29/12 , G01N29/4481 , G01N29/46 , G01N2291/012 , G01N2291/018 , G01N2291/267
摘要： A method for non-destructive testing of a quality of an ultrasonic weld from a welding process includes detecting of a time-dependent measurement value over a period of time, where the measurement value is characteristic of a mechanical or electrical vibration behavior of a welding process to be tested. The method includes evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis. The method further includes comparing a result of the evaluation to a reference value in order to test the quality of the weld. A measuring device and an ultrasonic welding system are also included.
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公开(公告)号：US11969817B2
公开(公告)日：2024-04-30
申请号：US17497513
申请日：2021-10-08
发明人： Felix Klimas , Thomas Herzing , Lutz Lehmann , Daniel Zemann , Gabriel Ertz , Jens Twiefel , Joerg Wallaschek , Michael Weinstein
CPC分类号： B23K20/10 , B23K31/125
摘要： A device to determine a state of an ultrasound welding process, which can be carried out using an ultrasound tool, includes a sensor element and an evaluation unit. The sensor element is configured to detect an electrical control signal from an ultrasound tool. The evaluation unit is configured to determine a signal property of the control signal and to determine the status of the ultrasound welding process based on a reference signal profile and on the determined signal property. An assembly with an ultrasound welding system and a method are also included.
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