Welding and correcting device for butt-joint annular welding seam of thin plate

The utility model belongs to the technical field of welding equipment. A welding and correcting device for a thin plate butt joint annular welding seam comprises a base, a plurality of rotary supports are evenly distributed on the base in a circumferential mode, each rotary support is provided with an upper rolling wheel and a lower rolling wheel, and the multiple rotary supports form a workpiece rotary supporting unit. Welding equipment is arranged on the welding bracket; the first rotating shaft is supported on the correction bracket through a bearing, a lower driving wheel is arranged on the first rotating shaft, and one end of the first rotating shaft is connected with a rotary driving part; the upper pressing wheel and the lower driving wheel are oppositely arranged up and down, an adjusting unit for driving the upper pressing wheel to move up and down is arranged on the correcting support, and the adjusting unit is used for adjusting acting force of the upper pressing wheel and the lower driving wheel o