Cleaning device for plate cylinder of printing machine

The utility model discloses a cleaning device for a plate cylinder of a printing machine, which comprises cleaning mechanisms arranged at two ends of the plate cylinder and abutted against a roller pillow, and the cleaning mechanisms are fixedly connected onto an ink fountain support through a fixing frame. The plate cylinder is simple in structure and convenient and fast to disassemble and assemble, the problem that oil leaks from the two ends of the plate cylinder can be effectively solved, and a large amount of manpower and cost are not needed to be invested for maintaining the plate cylinder; wiping and cleaning of the roller pillow can be achieved through the cleaning mechanism, and the situation that oil stains, paper scraps, dust and the like adhere to the roller pillow due to oil seepage of an oil seal at the side end of the roller pillow is avoided; in addition, the cleaning mechanism is a cleaning body capable of absorbing oil, oil stains can be absorbed away, and the phenomenon that the oil stains