Patent ID: 6607158
Filing Date: 2003-08-19
Classification: B65B

Abstract:
An unwinding apparatus for a strapping machine for the purpose of unwinding a band from a band-supply reel, the unwinding apparatus comprising:at least two bearing rollers located one behind the other in a rotational direction of the band-supply reel and on which at least two bearing rollers an outer circumference of the band-supply reel rests, a downstream bearing roller of the at least two bearing rollers being provided with a reel contacting rubber casing and being driven for driving the band-supply reel; an intermediate band store with a first roller which is stationary, a second roller located downstream of the first roller and movable relative to the first roller over which rollers the band is guided with a reserve band supply being formed between the first roller and the second roller and a sensor located between the first roller and a bottom of the intermediate band store to detect a predetermined position of the second roller, the second roller adapted to be movable between the first roller and the bottom, wherein driving of the band-supply reel is activated when the second roller assumes the predetermined position or is located above the predetermined position and the band-supply reel is deactivated when the second roller is located beneath the predetermined position; and a band introduction and tensioning subassembly downstream of the intermediate band store for final tensioning of the band introduced to the strapping machine, and for returning the band to the intermediate band store after a strapping operation by the strapping machine, so that the second roller moves toward the bottom of the intermediate band store.