Pneumatic padder for laboratory

The utility model provides a laboratory pneumatic padder which comprises a machine frame, a size tank is fixed on the machine frame, a lower roller is rotatably connected to the machine frame, the lower roller is located over the size tank, a driven upper roller is arranged over the lower roller, the two ends of the upper roller are rotatably connected to a sliding seat, and the sliding seat is slidably connected to a vertical sliding rail through a sliding block. The sliding rail is fixedly connected to the machine frame, the sliding seat is in transmission connection with a lifting driving device for driving the sliding seat to move up and down, one end of the lower roller is in transmission connection with a lower roller driving device for driving the lower roller to rotate, and an inclined cloth guiding material blocking plate is arranged on the feeding side between the upper roller and the lower roller. The safety protection device is simple in structure, low in cost, high in practicability, convenient t