Pressing die printing roller mechanism of carton printing die-cutting machine

The invention provides a pressing die printing roller mechanism of a carton printing die-cutting machine. The pressing die printing roller mechanism comprises wallboards on two sides and a printing roller which is connected in a rotating mode in the middle, eccentric bushings are connected between a shaft of the printing roller and the two wallboards in a rotating mode, each eccentric bushing is connected with an air cylinder in a hinged mode, and each air cylinder controls rotation of the corresponding eccentric bushing; eccentric bushing bases are connected between the eccentric bushings and the wallboards in a rotating mode; a planet wheel set mechanism adjusting the phase of the printing roller is arranged on the outer side of the wallboard on one side, a speed reduction motor on the outer side of the wallboard on the other side is fixedly connected with a support, and a mechanism converting rotation of the shaft into axial movement of a screw rod is arranged in the support. The pressing die printing roller mechanism has the advantages that the four functions of die-cutting printing roller phase adjustment, die-cutting pressure adjustment, printing roller axial adjustment and die-cutting working state switching are integrated, state switching is very convenient, the structure is compact, and pressure adjustment is simple and accurate.