Quality control method for ultrasound welding
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United States of America Patent
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Sep 20, 2011
Grant Date -
Dec 24, 2009
app pub date -
Sep 11, 2007
filing date -
Sep 16, 2006
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Abstract
A quality control method for ultrasound welding. The method provides for the generation of a tolerance range which is adjusted to the progress of the welding process and which is generated from measured values which influence the welding process. A measured value tolerance range is determined from measured values of executed welding processes, the measured values being associated with at least one parameter which influences the welding process and/or represents the goods of the welding process. Measured values are associated with an identical parameter of a further welding process following thereafter and are considered during the quality monitoring in such a way that the measured value tolerance range is changed in its form or composition to an average value for further welding processes, in accordance with the variance between the additional measured values and the tolerance range determined from previous measured values.
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