Six-axis gantry automatic welding device

The utility model discloses a six-axis gantry automatic welding device which comprises a base and a portal frame, a welding table is fixed at the bottom end in the base, the portal frame is vertically arranged at the top end of the base, and a movable table is transversely arranged at the top end in the portal frame. According to the six-axis gantry automatic welding device, when the device is used for welding machining, a first servo motor can be controlled to start to drive a second bevel gear to rotate, and the second bevel gear rotates to drive a second screw to rotate through an engaged first bevel gear; the second screw rod rotates to drive a second screw sleeve in external threaded connection to move leftwards or rightwards outside the second screw rod, and can drive the six-axis welding robot to move leftwards and rightwards inside the portal frame, so that different positions outside the workpiece can be conveniently adjusted and welded, and the use range of the device is widened; the problem that th