DEVICE OF JOINT ATTACHMENT OF ROLLED SHEET STRIPS BY WELDING Russian patent published in 2011 - IPC B23K26/26 B23K31/02 B23K101/16 B21B15/00 B23D15/02 

FIELD: technological processes.

SUBSTANCE: invention relates to a method and a device of joint attachment of rolled sheet strips (B) by laser welding. The device (0) comprises the main stand (1), a laser welding unit, a unit (3) of jaw details installed on the specified stand (1) to retain strips (B) of rolled sheet, a unit (C) of cutting designed for cutting head ends and tail ends of rolled sheet strips (B). The laser welding unit comprises a laser beam generator for welding of butt-joined strips (B) of rolled sheet and a welding head. The cutting unit (C) comprises upper knives, installed on the upper holder of the knives, and the lower knives arranged with the possibility of displacement relative to the upper knives and with the possibility of rolled sheet strip (B) cutting. The cutting unit (C) comprises a structure (6) for connection of the specified knives fixed on the specified stand (1). The welding head is installed with the possibility of displacement between the upper holder of knives and lower knives. The tail end of the butt-joined strip is clamped with the help of the first jaw detail, and the head end of the strip is pressed with the help of the second jaw detail. Heat and tail ends of strips are cut with the help of the cutting unit. Cut strips are approached and positioned, and they are connected by laser welding. Cutting, approaching, positioning and welding operations are done without jaws opening.

EFFECT: as a result of increased accuracy of strips attachment, evenness of the welding seam is provided.

14 cl, 6 dwg