Automatic ink filling device

The utility model discloses an automatic ink filling device which comprises a rotating seat, a stepping motor, a mounting frame, a lifting lead screw, a lifting motor, a cross-shaped placing plate, a threaded guide column, a sleeving clamping plate, a clamping push rod, an arc-shaped clamping plate pair and a switch valve. After a charging barrel is fixed through a rotating seat, a stepping motor, a mounting frame, a lifting lead screw, a lifting motor, a cross-shaped placing plate, a threaded guide column and a sleeving clamping plate, the position of the charging barrel is rotated and changed, and the charging barrel moves up and down to realize that a discharging opening is matched with a feeding arc-shaped frame, is placed in the feeding arc-shaped frame and is clamped through a clamping push rod and an arc-shaped clamping plate; meanwhile, a switch valve is extruded to open a valve, so that a corresponding charging barrel starts to discharge, and the discharging process is controlled by an operation pane