Welding tool for front plate of compartment cargo

The utility model discloses a carriage cargo front plate welding tool which comprises a tool frame, and linear rails are installed at the four corners of the two ends of the tool frame through locking devices. A sliding block is mounted on the linear rail; a bracket is mounted between the two sliding blocks; a second positioning and clamping device is mounted on one side of the tool frame, and a pressing device is mounted on the other side of the tool frame; a first positioning and clamping device is mounted on the bracket; the bracket is connected with the tool frame on the front portion through a lead screw. The lead screw drives the bracket to move back and forth along the line rail through rotation of the installed hand wheel. The tool is accurate in positioning of the front plate workpiece, simple in operation, simple in structure, convenient to amplify, popularize and use, capable of positioning the workpiece at multiple angles, capable of well controlling thermal deformation in the box cargo front plat