A wrapping device with a circular track structure, and a film feeding device

The packing device of anvil closed circular orbit device comprises at least one (3) and conveying device (1); the conveying element is a along the upper rail other, and thin film (9) is circular and packaging product; the conveying device (1) is: At least (8) is rotatable the chute is fixed on the film winding of the conveying device (1); deviceConveying device (12,13,14,15); through the feedways, a predetermined film tension transfer film (9); Driving mechanism (16,17,18,19,22), and requirement; the driving mechanism is a thin film roll (8); the thin film (9) disposed on the film roll (8) is directed rotating, the transmission element is a short comprising a driving force of the drive mechanism (16,17,18,19,22) and a orbit device (3) is mechanical contact (2 6) is a. The conveying device (1) further - comprising transmission mechanism (10,11,20,23); the mechanism element is a withdraw the upper contact and a a contact, then, the upper mechanism is setup according to the film tension or the substrate conveying device (1) and position on the rail, or a on the control according to the two.