| 摘要 |
<p>An unreeling assembly, particularly for labeling devices, comprising a supporting frame for at least one reel of continuous film which is supported by a respective reel support, which can rotate about an unreeling axis of the reel, and a motorized traction drum, which is designed to unreel the continuous film from the reel of continuous film, between the reel of continuous film and the traction drum there being at least one tensioning element, which is movable, with respect to the supporting frame, along a respective movement path, elements being provided for estimating the radius of the reel of continuous film as a function of the data related to the angular velocity of the reel, to the speed of the film drawn by the traction drum and to the position of the tensioning element with respect to the supporting frame along the respective movement path.</p> |
