Profile end edge welding device

The invention discloses a profile end edge welding device. The profile end edge welding device comprises a welding rack, a bending mechanism, a welding lifting mechanism, a welding horizontal moving mechanism and a welding clamping mechanism. A welding mounting block is arranged above the welding top plate, a first welding head is arranged on the side, close to the welding limiting plate, of the welding mounting block, a second welding head is arranged at the position, corresponding to the first welding head, of the welding limiting plate, the two welding clamping mechanisms are arranged on the two sides of the first welding supporting plate correspondingly, and the bending mechanism is arranged in the middle of the second welding supporting plate. The bending mechanism is located on one side of the welding limiting plate of the welding clamping mechanism, the welding lifting mechanism is arranged on the welding bottom plate, and the welding horizontal moving mechanism is arranged at the bottom of the welding