The present invention relates to a sonotrode for crimping an edge of a container having an end face, which is intended to contact the edge of the container during a relative movement along a longitudinal axis, wherein the end face comprises a crimping portion, at least portions of which form an angle with the longitudinal axis that is greater than 0° and is less than 90°, and the crimping portion is intended to contact the edge being crimped.

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.

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.

An ultrasonic machining device (1) for machining a workpiece. At least one component, selected from the group including a generator (11), a converter (12), a booster (13), a sonotrode (14), a HV cable (15), a machine frame (16) and a receiving device for the workpiece (17), is/are assigned an identifier (18). The identifier (18) characterizes at least one individual parameter of the component. The device (1) is assigned an input interface (19) which reads in the identifier (18) or generated data from the identifier. The device (1) is assigned a data processing arrangement (20). By way of the data processing arrangement (20), based on the read-in identifier (18) or the data generated from the identifier (18), at least one parameter of the device (1) is determined in such a way that the device (1) is operated in a target operating state, e.g., a resonant vibrating state.

The disclosure relates to a method for producing a welded assembly including a plurality of welded connections between first contact partners of a contact substrate and second contact partners of a placement unit. The contact partners are arranged in an overlapping position and a sonotrode is moved into a position overlapping with the second contact partner using a positioning device, is lowered onto the second contact partner in a welding contact position, and is subjected to ultrasonic vibrations to produce a welded connection. The sonotrode is positioned relative to the second contact partner with a camera and the sonotrode is positioned relative to the second contact partner based on a determination of a position deviation of a sonotrode imprint of a sonotrode working surface produced on a reference imprint carrier by the welding process.

Methods of ultrasound assisted 3D printing and welding involve the use of an ultrasonic sonotrode placed in on top of the solidified layer in the vicinity of a melt pool. The sonotrode, pressed against the solidified materials at the edge of the melt pool, is synchronized with the heat source such that it travels side-by-side with the melt pool to transmit ultrasonic vibrations to the solidifying melt pool, reducing hot tearing and porosity formation, and to consolidate the solidified materials under the sonotrode. The methods of the present invention are capable of making a large variety of commercially important alloys 3D printable and weldable.

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.

An ultrasonic welding apparatus joins metal pieces, such as wires, which are placed in a weldment zone where the metal pieces are subjected to pressure through a compressive height anvil and an adjustable width anvil, and intimate contact is made with a sonotrode of an ultrasonic stack. A first electric motor actuates movement of the height anvil to develop a compressive force for ultrasonic welding of the metal pieces. A second electric motor can position the width anvil before and during welding. A sensor, such as a load cell, measures the compressive force developed. The sensor directly can measure the load on the height anvil independent of the ultrasonic stack. A software algorithm can compensate for deflection of the load cell sensor and lost motion in the first electric motor actuating movement.

An ultrasonic resistance welding apparatus 10 contains a resistance spot welding apparatus 15, a first electrode 16 and a vibrable second electrode 18, the vibrable second electrode 18 in operable communication with an ultrasonic transducer 12, whereby the ultrasonic transducer 12 selectively imparts vibratory energy to the vibrable second electrode 18 based on signals from a controller 32. The vibrable second electrode 18 may be tuned or designed to resonate within 2.5% of an operating frequency of the ultrasonic transducer 12. During operation of the welding apparatus 10, a tip 19 of the second vibrable electrode 18 may be positioned at an anti-nodal point 38 of the vibratory energy and the vibrable second electrode 18 may be attached to the resistance spot welding apparatus 15 at a nodal plane 36 of the vibratory energy. A process for employing the apparatus 10 is also presented.

Ultrasonic tool and method for machining a workpiece by means of mechanical ultrasonic oscillations.