Compound machine convenient for replacing driving roller

The utility model discloses a compound machine convenient for replacing a driving roller, and relates to the technical field of compound machines, the compound machine comprises a machine body and a No.2 unreeling roller, a compound chamber and a No.1 support frame are arranged above the machine body, and the No.1 unreeling roller is arranged above the No.1 support frame through a movable shaft. According to the compound machine convenient for replacing the transmission roller, clamping pins can be pulled towards two sides to drive the clamping pins to rotate on a rotating shaft, tension springs are driven to extend, reset springs are contracted, the clamping pins are driven to be separated from mounting grooves, and then a transmission roller is pushed towards one side to drive the transmission roller to extrude a connecting plate; the connecting shaft extrudes the limiting spring towards one side by rotating the connecting shaft, one end of the connecting shaft slides towards one side in the built-in groove