Abstract: 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.

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 ? 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.

Abstract: The invention relates to a device and to a method for producing a tested weld joint between two contact elements (11, 12), which are joined together in a welding plane S, comprising a compressing space for accommodating the contact elements (11, 12), said compressing space being delimited by a work surface of a sonotrode, which transmits ultrasonic oscillations, and a counter-surface (15) of a counter-electrode (16) in a first axial direction at two opposing sides and by delimiting surfaces of opposing delimiting elements in a second axial direction at two opposing sides, said device comprising a test head (27) next to the compressing space, and said test head being able to be transferred from a position outside of the compressing space to a position within the compressing space in such a manner that the test head (27) is disposed within the open compressing space in a test mode of the device for subjecting a contact element (12) of the previously produced weld joint to a shear force essentially oriented para

Abstract: The invention relates to a sonotrode (218) of an ultrasonic welding device with a sonotrode body (224) with sonotrode head (220) with at least one working surface (230) extending in the longitudinal direction of the sonotrode head for welding or welding together and/or deforming and/or cutting at least one item of metallic welding material, wherein the sonotrode head has cross-sections which vary along the working surface in such a way that the cross-section of the sonotrode head in the end region of the working surface extending at the end face is greater than in the middle region of the working surface.

Abstract: The invention relates to a method for cutting material to be cut, which is preferably realized as a rod-shaped element, comprising a receiving device for fixedly receiving the material to be cut in such a manner that a part to be separated from the material to be cut protrudes over an element edge of the receiving device realized as a counter knife edge (42), and comprising a knife unit having a knife (24), which is movable with respect to the receiving device and which moves a knife edge (25) past the counter knife edge (42) in a cutting movement for executing a separating cut, the welding material being subjected to ultrasound for executing oscillations during the cutting movement.

Abstract: The invention relates to an ultrasonic metal welding device and a method for welding electrical conductors using a compression chamber that is adjustable at least in height and that is delimited on opposite sides by a section of a sonotrode as a first delimiting surface and by at least one section of a counter electrode (156) as a second delimiting surface, wherein for welding, the counter electrode and the sonotrode are displaced relative to one another. The counter electrode used is one that comprises sections (152, 154) of geometrically different working surfaces or is composed of at least two sections that are displaceable relative to one another.

Abstract: The invention relates to a method and to an arrangement for electrically conductive connecting, by means of ultrasonic welding, of first electric conductors (140, 142) and second electric conductors (144, 146) in a compression space the cross section of which can be changed and which comprises at least one lateral slide, a sonotrode and a counter electrode, wherein firstly, blank ends of the first electric conductors (140, 142) are introduced into the compression space and are welded by means of ultrasonic action to form a first connection (148) and then after the first connection has been removed from the compression space, blank ends of the second electric conductors (144, 146) are introduced into same and are welded by means of ultrasonic action to form a second connection, wherein the first connection is fed to a retaining device (182, 184) before the second connection is welded.

Abstract: The invention relates to ultrasonic welding tongs (10) for performing ultrasonic welding on a tubular electrically conductive welding medium (20), wherein a first welding jaw or a second welding jaw and a welding-medium stop device (21), which delimits a welding-medium holding space (19) formed between the welding jaws, are each electrically conductive and arranged electrically isolated from each other, the electrically conductive welding jaw and the electrically conductive welding-medium stop device forming components of a safety circuit in such a manner that a welding process including a closing of the welding jaws is triggered after the safety circuit has been closed by the formation of an electrical contact between the electrically conductive welding jaw and the welding-medium stop device by way of the welding medium.

Abstract: The invention relates to a device for welding rod-shaped electrical conductors (28, 29) provided with an outer insulating sheath (30), the device comprising a compression space (18) for receiving connecting regions of the conductors to be connected to each other, said compression space comprising at least one guiding element (41, 42) for axially positioning the conductors.

Abstract: The invention relates to a device for welding rod-shaped conductors (14), comprising a compression chamber for receiving joining sections (13) of the conductors to be joined together, the compression chamber being limited in a first axial direction (z-axis) on two opposite sides by an active surface of a sonotrode (16) transmitting ultrasonic vibrations in the direction of the z-axis and by a counter surface of a counter electrode (18), the device having a knife device which is provided with a drive device and comprises a knife (24) movable in the direction of the z-axis, said knife having a cutting edge which can be moved past the compression chamber, wherein a drive motor of the drive device is arranged in an installation space arranged below the sonotrode, the drive motor being connected to a knife holder (26) via a deflection gear (31) in order for the knife to be able to perform a cutting motion, the knife being moveable in the direction of the z-axis.

Abstract: The invention relates to ultrasonic welding tongs (10) for performing ultrasonic welding on a tubular electrically conductive welding medium (20), wherein a first welding jaw or a second welding jaw and a welding-medium stop device (21), which delimits a welding-medium holding space (19) formed between the welding jaws, are each electrically conductive and arranged electrically isolated from each other, the electrically conductive welding jaw and the electrically conductive welding-medium stop device forming components of a safety circuit in such a manner that a welding process including a closing of the welding jaws is triggered after the safety circuit has been closed by the formation of an electrical contact between the electrically conductive welding jaw and the welding-medium stop device by way of the welding medium.

Abstract: The invention relates to a device for welding rod-shaped conductors (14), comprising a compression chamber for receiving joining sections (13) of the conductors to be joined together, the compression chamber being limited in a first axial direction (z-axis) on two opposite sides by an active surface of a sonotrode (16) transmitting ultrasonic vibrations in the direction of the z-axis and by a counter surface of a counter electrode (18), the device having a knife device which is provided with a drive device and comprises a knife (24) movable in the direction of the z-axis, said knife having a cutting edge which can be moved past the compression chamber, wherein a drive motor of the drive device is arranged in an installation space arranged below the sonotrode, the drive motor being connected to a knife holder (26) via a deflection gear (31) in order for the knife to be able to perform a cutting motion, the knife being moveable in the direction of the z-axis.

Abstract: The invention relates to a method for producing a node by welding at least one first stranded wire comprising individual wires to at least one second stranded wire comprising individual wires, the stranded wires being of different materials, in a compression chamber with adjustable height and width of an ultrasonic welding device, the width being adjusted by means of at least one lateral slide and the height by changing the distance between a sonotrode and a counter electrode of the ultrasonic welding device, the at least one first stranded wire being welded with a higher specific energy, under a higher pressure or with a greater ultrasonic vibration amplitude than the at least one second stranded.

Abstract: The invention relates to an ultrasound welding device for welding electrical conductors to produce a node between the conductors, comprising a compression space for receiving the conductors, which is delimited peripherally by two working surfaces delimiting the compression space on opposing sides and two lateral delimitation surfaces running transversely to the working surfaces, and the remaining sides are open. One of the working surfaces is a portion of a sonotrode, excitable in ultrasound oscillation, for the ultrasound welding device and the other working surface is a portion of a counterelectrode and at least the working surfaces are structured.

Abstract: The invention relates to an ultrasonic welding device having an oscillator, having a sonotrode, which can be caused to oscillate with a wavelength, and has a welding region in the vibration antinode of the sonotrode. The sonotrode is supported at the vibration node of the sonotrode in a first bearing. To enable both a radial and an axial alignment of the sonotrode, the first bearing has a projection, which has a U-shaped geometry in a section extending in a longitudinal direction of the sonotrode, which U-shaped geometry has side legs and a cross leg that connects the side legs, the projection engages in a recess in the sonotrode matched to the U-shaped geometry, the sonotrode is supported on the cross leg of the projection in a planar manner, and the sonotrode is axially aligned by means of at least one side leg of the projection.

Abstract: A method for determining the compression level of a node by compacting and welding electrical lines inserted into a compression chamber of an ultrasonic welding system, the compression chamber having an adjustable height and width. The method includes inserting the lines into the compression chamber, compacting the lines, determining the compacting cross section of the compacted lines, determining the actual total cross section via a correlation function taking the compacting cross section into account, welding the compacted node with a welding parameter set, determining the welding dimension from the height (h2) and width (b) of the compression chamber after welding, and calculating the compression level based on the actual total cross section and the welding dimensions.

Abstract: A method and apparatus for welding lines having metallic braids or strands to form an end node or transit node by introducing a first portion of each line into a compression space of an ultrasonic welding apparatus, wherein the first portions run along a straight line, wherein at least one line has a component at a distance from the end node or transit node to be welded, and at least the line which has the component is attenuated between the compression space and the contact element in a second portion by a change in profile of the line which is imposed using a deflection device. To this end, the line which has the component is oriented in extension of the straight line.

Abstract: A process for reducing aluminum pick-up and adherence during the ultrasonic welding of aluminum braids which are welded in a vertically and/or horizontally adjustable compression chamber of an ultrasonic welding device. The static tool parts which delimit the compression chamber have working surfaces made from polycrystalline diamond (PCD).

Abstract: A method for welding together at least two planar metal components oriented with respect to one another using ultrasound, wherein for the welding operation the components are arranged between a tool transmitting ultrasonic vibrations and a counter-holder and fixed between same by the application of pressure. In order for the components to have a desired orientation with respect to one another after the welding operation that corresponds to the orientation prior to the welding operation, according to the invention the components, prior to applying the ultrasonic vibrations for welding the same together, are deformed by means of at least one projection that projects from the tool and/or the counter-holder beyond the respective working surface using the application of force such that a translatable and rotatable relative movement is suppressed, or substantially suppressed, between the components and that the welding operation is carried out after the deformation.

Abstract: A method and assembly for the electrically conductive connection of a bundle of wires having an insulation, wherein the insulation is at least partially removed by means of ultrasonic effects. In order to ensure high mechanical strength in a good electrically conductive connection, according to the invention the insulation of the wires is removed in a first step by means of plastic-ultrasonic welding and the wires are bonded in a second step by means of metal-ultrasonic welding or resistance welding.