Feeding dustproof mechanism of extruder

The utility model relates to the technical field of plastic extrusion equipment, and discloses an extruder feeding dustproof mechanism which comprises extrusion equipment and a positioning piece, a feeding hopper for feeding is arranged on the extrusion equipment, a fixing plate is arranged on the feeding hopper, a discharging barrel is arranged on the fixing plate, a cover plate is hinged to the end of the discharging barrel, and the positioning piece is arranged on the cover plate. The positioning piece is arranged on the discharging barrel and used for fixing the end of a material bag so that the material bag can be lifted, and the discharging barrel is installed on the fixing plate. The feeding device effectively solves the problems that when manual discharging is carried out, large dust can be aroused, and when an existing method for dust falling through dust suction of a fan is adopted, dust prevention cannot be completed, a large amount of dust can still be diffused, and a worker can still suck a large