Auxiliary clamp for printing ink on casing shell

The invention discloses a cartridge receiver shell printing ink coating auxiliary clamp which is used for clamping a cartridge receiver shell and comprises a base, a rotating assembly and a clamping assembly, the base is fixedly connected with a workbench, and a mounting hole is formed in the base; the rotating assembly comprises a supporting column and a rotating bearing mounted in the mounting hole, the rotating bearing comprises an upper shaft washer, a lower shaft washer and a rolling body clamped between the upper shaft washer and the lower shaft washer, the outer side wall of the lower shaft washer is in interference fit with the inner wall of the mounting hole, the upper shaft washer is in clearance fit with the inner side wall of the mounting hole, and the first end of the supporting column extends into the rotating bearing; the outer side wall of the supporting column is in interference fit with the inner side wall of the upper shaft washer, and the outer side wall of the supporting column is in clea