Diagnostic system and method for testing integrity of stack during ultrasonic welding
US9981337B2 · kind B2 · utility
2Cited by
12References
15Claims
0Family size
Assignee
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Key dates
| Filing date | May 13, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/267
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for testing the integrity of a stack during ultrasonic welding, includes the steps of: (i) ultrasonically welding two or more work pieces with a stack, the stack including a convertor and a horn; (ii) measuring a frequency profile based on a vibration of the horn during the welding step; and (iii) comparing the measured frequency profile to a standard frequency profile to obtain an error rate, the error rate being indicative of a difference between the measured frequency profile and the standard frequency profile. A system employing the aforementioned method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.