Arc-shaped printing ink transfer barrel

The utility model discloses an arc-shaped printing ink transfer barrel which comprises a barrel body, the bottom of the barrel body is in a spherical arc shape, a discharging pipe is installed at the bottom of the barrel body, a supporting frame comprises an annular frame, an arc-shaped batten for supporting the bottom of the barrel body is installed on the upper side of the annular frame, and one end of the arc-shaped batten and the annular frame are supported through stand columns. A plurality of universal wheels are mounted between the lower side of the annular frame and the ground; due to the fact that the bottom of the barrel body is spherical, the arc-shaped batten extends to the center of the bottom of the barrel body in an arc-shaped transition mode, the discharging pipe is installed in the center of the bottom of the barrel body, the annular batten is fixed to an annular plate corresponding to the center of the barrel bottom, the discharging pipe is just installed in a central annular hole of the ann