Automatic abrasive paper changing mechanism of manipulator polishing equipment

According to the automatic abrasive paper replacing mechanism of the manipulator polishing equipment, polishing head abrasive paper can be automatically replaced, the polishing time is saved, and the polishing efficiency is improved. A gap of the abrasive paper lifting plate is sleeved with the abrasive paper fixing rod and fixed to a movable rod of the abrasive paper lifting air cylinder, the abrasive paper fixing rod penetrates through a center hole of the round back velvet abrasive paper to be placed on the abrasive paper lifting plate, the movable rod of the abrasive paper lifting air cylinder is lifted to keep the round back velvet abrasive paper to the highest position, and therefore the abrasive paper can be stuck to the polishing head of the mechanical arm. A second abrasive paper stripping piece is locked at the upper end of the supporting plate through a screw, an air cylinder mounting plate and a stripping air cylinder are installed on the side face, a first abrasive paper stripping piece is instal