Ink delivery device of printing machine

The utility model discloses an ink delivery device of a printing machine, which comprises a left support, a right support and a swing transmission shaft, a left bearing is arranged on the left support, a right bearing is arranged on the right support, two ends of the swing transmission shaft are respectively arranged in the left bearing and the right bearing, and the swing transmission shaft is connected with the left bearing and the right bearing. A left swing arm and a right swing arm are fixed to the two sides of the swing transmission shaft respectively, the two ends of the drop roller are rotationally installed at the end of the left swing arm and the end of the right swing arm, and the swing transmission shaft is formed by detachably connecting at least three sections. According to the ink delivery device of the printing machine, when the bearing is replaced, only the middle section of the swing transmission shaft needs to be detached, then the other sections of the swing transmission shaft are pulled t