Four-head laser welding machine

The utility model relates to the technical field of laser welding machines, and particularly discloses a four-head laser welding machine which comprises a rack, a conveying mechanism is arranged on the rack, and the conveying mechanism comprises an X-axis translation unit; the X-axis translation unit comprises a first bidirectional lead screw driven by a motor, and sliding plates are arranged on two nuts of the first bidirectional lead screw. A Y-axis translation unit is arranged on the sliding plate; the Y-axis translation unit comprises a two-way lead screw II driven by a motor, and machine head mechanisms are arranged on two nuts of the two-way lead screw II; the machine head mechanisms on the two Y-axis translation units are oppositely arranged; a Z-axis translation unit is arranged on each machine head mechanism; a laser welding gun head is arranged on the Z-axis translation unit; the opposite sides of the two sliding plates are provided with conveying belt assemblies through supports. Compared with the