Vertical metal barrel bottom surface roll-packing machine

Disclosed is a vertical metal barrel bottom surface roll-packing machine. A rack of the machine is composed of a workbench and a support frame, a fixing plate is mounted at the top end of the support frame, a lead screw is mounted on the fixing plate, a barrel pressing plate is mounted at the lower end of the lead screw, a rotating shaft is mounted at the central position of the top of the workbench, the lower portion of the rotating shaft is connected with a motor, a barrel bottom positioning disc is fixedly mounted at the upper end of the rotating shaft, a barrel bottom of a barrel is placed on the barrel bottom positioning disc, a lower opening of the barrel is placed at the outer edge of the barrel bottom, a bottom surface roll packer is mounted at the side edge of the barrel bottom positioning disc, and when the rotating shaft drives the barrel bottom positioning disc, roll-packing wheels on the bottom surface roll packer are pushed by an operator via a hand wheel to butt against the outer edges of the b