Automatic sanding equipment

The utility model discloses automatic sanding equipment. The automatic sanding equipment comprises a rack, a portal frame, a workbench, a first driving mechanism, a sanding mechanism and a second driving mechanism, the portal frame is arranged above the rack; the two workbenches are arranged at an interval; each workbench is provided with a fixing device; the first driving mechanisms are arranged on the rack, and each first driving mechanism is in driving connection with the corresponding workbench; the sanding mechanism is arranged on the portal frame in a sliding manner; the second driving mechanism is arranged on the portal frame and is in driving connection with the sanding mechanism; under the cooperation of the first driving mechanism and the second driving mechanism, the sanding mechanism polishes a plate on the workbench; and the sanding mechanisms alternately grind the plates on the two workbenches, so that workers can also alternately replace the plates on the corresponding workbenches, and the work