METHOD AND DEVICE FOR BUTT WELDING THIN METAL SHEETS WITHOUT FILLER MATERIALS BY USING CLAMPING DEVICES, AT LEAST ONE PRESSING ELEMENT BEING SUITABLE FOR APPLYING TWO OR MORE DISTINCT PRESSURE LEVELS

摘要

PROBLEM TO BE SOLVED: To provide a positioning and fixing device for butt welding thin sheet metal arranged on a carrier table without filler materials.SOLUTION: The device comprises movable welding heads, a carrier table 1, a clamping device 3 having at least two pressing elements 4, 5 which operate independently of one another. At least one of the pressing elements 4, 5 is suitable for applying two or more distinct pressure levels. Additional horizontal pressing elements 11 are further provided in order to press a metal sheet to be welded against another metal sheet while being deformed, until full-area contact of the metal-sheet edges butting against one another is achieved.SELECTED DRAWING: Figure 1