Car body mfr. process - uses deep drawn laminated panel, with bead reinforcements shaped in roll-bond process

The process is for the mfr. of deep drawn body sections with bead-like reinforcements, esp. for cars. It uses laminated sheet metal arranged in at least two layers. The two layers are removably connected over their complete surface, via intermediate adhesive foils, thin oil- or fat layers, etc. Alternately, the two layers may be connected only in certain areas or along certain lines, e.g. by continuous - or laser welding. The sandwiched flat panel is deep drawn; it is then held between press tools, which have surface channels in the area for the beads to be formed. The edges of the panel near the ends of the beads are connected to a pressure medium source, and the adhesion between the beads is released by the roll bond process. L'INVENTION CONCERNE UN PROCEDE DE FABRICATION DE PIECES EMBOUTIES DOTEES DE RENFORTS EN FORME DE MOULURES, EN PARTICULIER POUR LES CARROSSERIES DE VEHICULES AUTOMOBILES, AINSI QU'UN OUTILLAGE POUR LA MISE EN APPLICATION DU PROCEDE ET LES PIECES EMBOUTIES FABRIQUEES D'APRES CE PROCEDE.ON EMBOUTIT UNE TOLE MULTICOUCHE ENTRE DES OUTILS DE PRESSE 4, 5, 6 PRESENTANT DES CANAUX, EN SURFACE, DANS LES ZONES CORRESPONDANT AUX MOULURES 7 A REALISER PUIS, DANS CES ZONES, ON INTRODUIT ENTRE LES COUCHES 1, 2 UN FLUIDE SOUS PRESSION POUR DETACHER LOCALEMENT CES COUCHES L'UNE DE L'AUTRE.APPLICATION NOTAMMENT A L'INDUSTRIE AUTOMOBILE.