Device for coating different protective paints on inner and outer surfaces of automobile door

The utility model relates to the technical field of automobile processing, and discloses a coating device for different protective paints inside and outside an automobile door, which comprises a support table, a fixed connecting rod is fixedly mounted on the lower surface of the support table, and a movable connecting rod is movably connected to the outer surface of the fixed connecting rod. Protective paint storage barrels are fixedly installed on the upper surfaces of the left side and the right side of the supporting table, circulating pipes are fixedly installed on the left side and the right side of the supporting table in an inserted mode, a supporting connecting frame is fixedly installed on the outer surface of the right side of the supporting table, a paint collecting pool is movably connected to the lower surface of the supporting connecting frame, and a vehicle door limiting structure is arranged below the supporting table. A movable steering structure is arranged below the supporting table; the pu