Method for joining edges and/or surfaces of a profile, joining roller arrangement and profiling installation

A method for joining edges and/or surfaces of a profile (14) in a profiling installation for longitudinally forming a continuous material strip (1) or starter profile or plate into an at least partially closed profile shape, the method comprising:

• forming the material strip (1) or starter profile or the plate in the profiling installation using a plurality of roll forming tools (2) into the profile (14) which is at least partially closed;
• securing said profile (14) in a joining zone (8) of the profiling installation via a joining method, including at least one of welding, brazing, adhesive bonding or folding, during a longitudinal pass of the profile (14), forming a longitudinally running joining seam (16);
• passing the profile (14) in the joining zone (8) through at least one of a joining roller arrangement (11) or a planar joining arrangement (22) in order to feed the profile (14) in a controlled manner to a joining point (10) and stabilizing said profile at least one of at or downstream of the joining point (10), and ensure that the profile (14) is dimensionally stable during and after joining;
• detecting forces or magnitudes of force components which act on the profile (14) from at least one of joining rollers (15, 18) of the joining roller arrangement or at least one subsection of the planar joining arrangement (22) in the joining zone (8);
• after the profile (14) passes the joining point (10), passing the profile (14) through a stabilization zone (24) within the joining zone in order to stabilize the connecting seam by at least one of cooling or curing, at least one of a) a part of the joining roller arrangement (11) or b) a part of the planar joining arrangement (22) that serves for stabilizing the profile (14) in the stabilization zone (24);
• and
• detecting forces which act on the profile (14) from at least one of a) at least one said joining roller (15) or b) at least part of the planar joining arrangement (22) in the stabilization zone (24).