Printing speed-adjustable conveying belt device

The utility model discloses a printing speed-adjustable conveyor belt device, which relates to the technical field of conveying, and comprises conveyor belt equipment, two conveying rollers are rotatably connected in the conveyor belt equipment, a pinion is fixedly sleeved on the surface of the left conveying roller, a connecting plate is fixedly connected to the rear side of the conveyor belt equipment, and the connecting plate is fixedly connected to the rear side of the conveyor belt equipment. A through groove is formed in the rear side of the connecting plate, an adjusting mechanism is arranged in the through groove and comprises a long plate, the long plate is slidably connected in the through groove, mutual blocking between a clamping rod and the connecting groove can be eliminated by moving a push rod, and finally meshing transmission of a first gear and a pinion can be completed; and therefore, when the conveying belt equipment is used for printing products, speed regulation work can be conducted acc