Polishing device for PVC door skin of paint-free door

The invention provides a polishing device for PVC door skin of a paint-free door. The polishing device for the PVC door skin of the paint-free door comprises a base, a machine body, a control switch,openings, a dust collector, guide rails, bayonets, a connection base, a spring, a connection rod, an upper polishing board, connection blocks, protrusions, guide wheels, dust collecting openings, an upper polishing motor, a lower polishing motor, polishing discs, a conveying motor, idler wheels and conveying belts; the machine body is fixedly installed on the base; the control switch is fixedly installed on the front surface of the machine body; the openings are formed in the left end and the right end of the machine body; the dust collector is fixedly installed on the top of the machine body;the guide rails are fixedly installed at the left end and the right end of the inner wall of the machine body; and the bayonets are formed in the left ends and the right ends of the guide rails. A paint-free door plate can be