Abstract: A method and to a corresponding device for continuously welding strips or sheets, guided into abutment, at their abutting edges, comprising at least two welding heads, and tension rollers which are arranged in pairs on both sides of the strips or sheets to be welded perpendicularly to the running direction thereof and which form a gap in the region of a joint of the strips or sheets, through which gap a first energy beam emanating from a first of the at least two welding heads impacts the strip edges or longitudinal edges to be welded, a second of the at least two welding heads being arranged on the opposite side of the strips or sheets a second energy beam of said second welding head impacting in this location the strip edges or longitudinal edges to be welded, characterised in that wherein the at least two welding heads are arranged offset relative to one another in the running direction of the strips or sheets so that the impact points of the energy beams on the strip edges or longitudinal edges to be weld

Abstract: A device and a method for guiding bands to be joined to one another along their longitudinal edges, in which bands are guided via deflection rollers to a joining position. The device according to the invention provides that the deflection roller located closer to the joining position is configured as a conical roller, the deflection roller arranged upstream of this conical roller in the running direction of the band being also configured as a conical roller or as a deflection roller having a cylindrical lateral surface, and the conical roller last mentioned tapering in the direction of the other longitudinal edge of the band, or the rotational axis of the deflection roller having a cylindrical lateral surface spatially approaching the rotational axis of the conical roller arranged downstream in the running direction of the band on the edge side of the band opposing the longitudinal edge to be joined.

Abstract: The invention relates to a device and a method for producing tailored blanks. The device comprises a workpiece carrier for the sheets (15a, 15b) that are to be joined into tailored blanks in the butt joint by welding. The invention further comprises a plurality of laser welding heads (14a, 14b), which are arranged one behind the other over the workpiece carrier and along the butt joint to be welded and can be moved with an advancing device (11a, 11b), wherein the heads can be aligned with the joint using positioning means, wherein at least two combined laser cutting and welding heads (14a, 14b) are carried by at least two independent arms (13a, 13b), each associated with independent units (11a, 11b) of the advancing device, and wherein the positioning means can adjust the distances of the units (11a, 11b) in the direction of the butt joint and also the distances of the cutting and welding heads (14a, 14b) in the transversal direction to the butt joint.