The no-shaft web offset press includes a foundation, a printing assembly, a front drawing assembly and a back drawing assembly. The printing assembly includes a print plate drum with PS plate and a printing drum, and each of the drawing assemblies has independent servo motor for providing power. Between the print plate drum and the printing drum, there is one increased transferring rubber drum with notch. The combination of the print plate drum, the transferring rubber drum and the printing drum is powered with one servo motor controlled by means of one PLC controller. The present invention has the features of simple structure, high printing quality and convenient print plate regulation. |