Auxiliary feeding device of uncoiler

The auxiliary feeding device comprises a base and the uncoiler, supporting legs are fixedly connected to the four corners of the upper end face of the base, supporting plates are fixedly connected to the upper end faces of the two supporting legs located on the left side and the right side, and sliding rails are fixedly connected to the opposite outer walls of the two supporting legs located on the front side and the rear side. Sliding grooves are formed in the two sliding rails, sliding rods are fixedly connected to the interiors of the two sliding grooves, sliding plates are slidably connected to the outer walls of the two sliding rods, and a first servo motor is fixedly connected to the right end face of the right supporting plate; the output end of the first servo motor penetrates through the right end face of the supporting plate, extends to the left side of the supporting plate and is fixedly connected with a first lead screw in threaded connection with the sliding plate, a steel coil is clamped from th