Device for automatic welding of pipeline

The invention discloses a device for automatic welding of a pipeline. The device for automatic welding of the pipeline comprises a feeding mechanism, a welding mechanism and a receiving mechanism. Thewelding mechanism is welded to one side of the feeding mechanism, and the receiving mechanism is arranged on the side, away from the feeding mechanism, of the welding mechanism. The welding mechanismis composed of fixing screw rods, fixing sliding blocks, fixing motors, fixing supports, pneumatic three-jaw chucks, rotary motors, a welding working table, supporting rods, a fixing transverse beam,a lifting sliding groove, a lifting cylinder and the like. According to the device for automatic welding of the pipeline, a feeding cylinder and the pneumatic three-jaw chucks are arranged, construction speed can be improved significantly, and thus reasonable reduction of the construction period is achieved; under the action of a control panel, investment of machines and tools is reduced, and investment of manpower is redu