Abstract: The invention relates to a conveying device for the transport of components or component groups from and to one or more workstations, the conveying device comprising a conveying track and a component carrier truck moved on the conveying track, and there being provided in the region of the workstations, on the conveying track, positioning devices which cooperate with positioning devices on the component carrier truck in such a way that a desired position of the component carrier truck in the workstation is assumed in all three space directions (X, Y, Z) directly as a result of the travel-in movement of the component carrier truck into the workstation, characterized in that, during the entire travel-in movement of the component carrier truck into the workstation, each positioning device on the component carrier truck comes into contact with only its positioning device, determining the desired position, on the conveying track.

Abstract: A process and an apparatus for the cooling of a welding seam area during laser welding of plates or strips, preferably used in car body construction in automotive engineering. It is described how expediently the cooling agent supply and also the supply of an inert gas veil built up between the focus and liquid coolant is achieved so that the liquid coolant is prevented from entering the welding seam area and causing detrimental effects there.