Welding apparatus for a motorcar body

摘要

Additional welding apparatus for welding the component parts of a temporarily spot-welded assembled motorcar body. The additional welding apparatus includes a first welding station and a second welding station. At the first welding station are front and rear pairs of under-portion welding robots positioned on floor surface surrounding the motorcar body, a machine frame extending laterally over the motorcar body, and opening portion welding robots suspended from the machine frame for welding the peripheral edges of opening portions in the respective component parts of the motorcar body. At the second welding station are a pair of further under portion welding robots positioned on the floor surrounding the welding station and a pair of upper portion welding robots suspended from a second machine frame extending laterally over the second welding station. Each of the opening portion welding robots has a gun-holding arm turnable about 360 degrees attached to the front end portion of a supporting arm which is moveable to advance and retreat to and from the opening portion.