Patent ID: 6945018

Claim:
A wrapping machine for wrapping a plastic foil web around an object to be packaged, said wrapping machine comprising: a machine frame supported on a fixed base and comprising upright vertical columns, a lifting frame arranged to be vertically movable upwards and downwards and guided by the vertical columns, a lifting motor for moving the lifting frame, power transmission means for the transmission of power from the lifting motor to produce vertical motion of the lifting frame, said power transmission means comprising elongate flexible drive elements and wheels for the transmission of the power of the lifting motor to the drive elements, a foil dispenser, on which a foil web roll can be rotatably mounted, said foil dispenser being arranged to circulate on a ring-like path about the object to be packaged for delivering a plastic foil web from the foil web roll to form a wrapping around the object to be packaged, wherein the lifting motor is secured to the lifting frame so as to be movable with said lifting frame; the wheels comprise a drive belt pulley fitted for reeling a flat belt, said drive belt pulley being rotatably mounted on bearings on the lifting frame and rotated by the lifting motor; and each of the elongate drive elements includes a drive belt having a first end secured to the upper end of the vertical columns and a second end secured to the drive belt pulley.