Method and device for welding wire segment pairs

A method for welding a plurality of wire segment pairs, each of the wire segment pairs comprises two adjacent-lying wire segments, the respective adjacent-lying wire segments of each wire segment pair have a contact region in which they are to be welded to the respective other wire segment, the method comprising:

• guiding the wire segment pairs one after the other between two elements of a contact-pressing unit, the two elements having a circular shaped periphery, the two elements of the contact-pressing unit have mutually parallel axes of rotation rotating in such a manner that their rate of rotation at their periphery is identical to a speed at which the wire segments of the wire segment pairs that are facing the corresponding element are guided between the two elements;
• at a weld moment at which at least one of the wire segment pairs is located between the two elements of the contact-pressing unit, exerting, by the contact-pressing unit, a contact-pressing force on this wire segment pair so that the wire segments of this wire segment pair can be pressed against one another at their contact regions;
• and
• at the respective weld moment, directing laser radiation at the one of the wire segment pairs against which the contact-pressing unit is exerting a contact-pressing force at this weld moment, wherein the laser radiation is directed at a region in which the contact regions of the wire segments of the corresponding wire segment pairs are pressed against one another.