THE SHEET OF AUTOMATIC HEAT WELDING DEVICE FOR HEAT EXCHANGER

An automatic heat fusing device of a sheet for a heat exchanger is provided to improve productivity and to maximize efficiency by heat fusing the sheet to an injection molded unit heat exchange plate automatically and by heat fusing horizontally and vertically according to a shape of the unit heat exchange plate. An automatic heat fusing device of a sheet for a heat exchanger, to heat fuse a second sheet automatically to a surface of a unit heat exchange plate having an air flow guiding ribs on both sides of a first sheet, which is produced by injection molding, comprises the followings: a base(110); a rotating table(120) installed above the table; a lower jig(121) installed at four places on the table, to receive the unit heat exchange plate as a shape; a first heat fusion unit(130) installed to a ceiling of the base to ascend and descend, to heat fuse firstly the second sheet to a horizontal part of the unit heat exchange plate laid on the lower jig; a second heat fusion unit(140) to heat fuse the firstly heat fused second sheet secondly to a side of a vertical protrusion part of the unit heat exchange plate by ascending and descending and moving horizontally; and a transferring unit(150) sucking the unit heat exchange plate heat fused with the second sheet, and moving to a conveyor belt(160).