Ultrasonic welding device

US11219964B2 · kind B2 · utility

Assignee

• SCHUNK SONOSYSTEMS GMBH · DE

Inventors

• Stefan Mueller · Villingen, DE
• Rainer Wagenbach · Merenberg, DE

Key dates

• Filing date: Oct 10, 2018
• Grant date: Jan 11, 2022
• Expiry date: Jan 24, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2101/06
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

An ultrasonic welding device includes a sonotrode emitting longitudinal vibrations in the direction of a longitudinal sonotrode axis which comprises a work surface on a sonotrode head and an anvil. A weldment accommodation for a weld deposit is between the work surface ‘p’ and a counterface of the anvil. The ultrasonic welding device includes a stop device for defining the welding position with respect to the work surface. The counterface is disposed at an inclination α towards the longitudinal sonotrode axis such that when the counterface is inclined downward towards a vibration node adjacent to the work surface, distance a between the work surface and the counterface continuously increases towards the vibration node, and when the counterface is inclined upward towards a vibration node adjacent to the work surface distance a is essentially constant.