Apparatus for welding motor vehicle bodies

Apparatus for welding motor vehicle bodies which have previously been assembled loosely, comprising:

• a station for the forming and welding of the body, said station defining a working position;
• a conveyor line for transporting the loosely preassembled bodies through the said station;
• at least two pairs of forming frames situated at the two sides of the station, each pair of forming frames being provided with positioning devices engageable with the body and adapted to the specific geometric shape of a particular type of body;
• forming-frame conveyor means for bringing a pair of forming frames corresponding to the type of body to be welded into correspondence with the working position in the said station from time to time, and
• at least one welding device for effecting the welding of the body in the said station,
• wherein at least one drum member rotatable about an axis parallel to the length of the body in the said station is provided on each side of the conveyor line and carries on its periphery a plurality of said forming frames suitable for different types of body.