Abstract: A method is described for welding a splice by way of an ultrasonic welding device, the ultrasonic welding device having a sonotrode for generating ultrasonic vibrations, an anvil, a first lateral element, a second lateral element and a compaction chamber, the height of which is adjustable by varying a distance between the sonotrode and the anvil and the width of which is adjustable by varying a distance between the first lateral element and the second lateral element.

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: 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: The invention relates to method for producing a connecting passage node or end node which has a rectangular shape in cross section and consists of electrical conductors. The nodes are produced by compacting and subsequent welding of the conductors by means of ultrasound in a compression chamber of the ultrasound welding machine of which the height and width can be adjusted and which has a rectangular shape in cross section, wherein opposite delimitation surfaces of the compression chamber form sections of a sonotrode and an opposite counter electrode, respectively. To connect electrical conductors which are difficult to weld to an end node and/or connecting passage node, the conductors (50, 52, 54) are brought into a sleeve and, subsequently, the sleeve (62, 65) is welded with the conductors in the compression chamber to form the end node and/or connecting passage node (49) having a rectangular cross section.

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.