Welding device with multi-angle adjusting function for exhaust pipe

The invention discloses an exhaust pipe welding device with a multi-angle adjusting function, and relates to the field of exhaust pipe welding, the exhaust pipe welding device comprises a bottom plate, a plurality of supporting rods are fixedly mounted on the bottom plate, and a base is fixedly mounted on the supporting rods. An angle adjusting motor is started to adjust the angle of a third pipeline clamp and fix the two ends of a bent exhaust pipe, adjustment can be conducted according to the bending angle of the pipeline, the welding position of the exhaust pipe at the bottom is aligned with a welding head and then fixed through a second pipeline clamp, and the two exhaust pipes make contact or get close by starting a lifting motor; finally, after alignment, a pushing hydraulic cylinder is started to enable a welding head to be close to the exhaust pipe, then a control motor and a welding machine are started to enable the welding head to rotate around the exhaust pipe for welding, the angle of a limiting p