LTI Metalltechnik relies on a chained CLOOS robot system for welding fan wheels. The system has four loading and unloading stations in addition to three welding stations. An intelligent shuttle system connects the individual stations with each other. Via a magnetic code on the jig, the shuttle can identify the correct welding station for the component during loading. The three welding cells each have a workpiece positioner with rotating and swivel movement to bring the component into the optimum welding position. The new robot ssystem has enabled LTI to double its welding speed in the production of fan wheels. There are additional time savings due to the fully automatic workpiece handling. Furthermore, the robots ensure maximum process reliability