Automatic cover dismantling device

The utility model belongs to an automatic cover dismantling device, and is suitable for automatic packaging equipment in the fields of medicine, food, chemical engineering and the like. The automatic cover dismantling device comprises a rack (1), a cover removing cylinder (11), a cover rotating cylinder (2), an air wrench (4) and a magnetic chuck (5), wherein the rack (1) is fixedly connected to the cover removing cylinder (11); the cover removing cylinder (11) is used for moving the cover rotating cylinder (2), the air wrench (4) and the magnetic chuck (5) on the horizontal plane so as to move a bucket cover; the cover rotating cylinder (2) is connected with the cover removing cylinder (11) through a floating joint, a guide rod of the cover rotating cylinder (2) is connected with the air wrench (4), and the cover rotating cylinder (2) is used for controlling the displacement of the air wrench (4); the air wrench (4) is provided with the magnetic chuck (5), and the air wrench (4) is used for dismantling a buc