| 摘要 |
<p>A method for effecting the wrapping of stacks, which comprises the following phases: preparing a self- propelled winding machine comprising: a self-propelled motorized trolley, suitable for moving on the ground by means of at least two driving wheels whose rotation creates the movement trajectory of the machine, a control unit of the movement of the driving wheels and means suitable for supplying a wrapping material of the stack supported by the trolley, a distance detector assembled on the machine suitable for perceiving the distance from the stack. The method comprises the following phases: arranging the stack in a fixed position with respect to the ground where the machine moves, effecting the wrapping of the stack by releasing the wrapping material while the machine completes a series of revolutionary movements around the stack. The method comprises the following additional phases: establishing a main circular trajectory for the machine, having a constant diameter which is greater than the maximum dimension, in plan view, of the stack, so that the machine always moves at a distance from the stack, initially positioning the machine so that the centre of the main trajectory is conveniently close to the central and vertical geometrical axis of the stack; sending a correction signal to the control unit when the distance revealed by the distance detector falls below a predetermined threshold distance, establishing a corrective trajectory for the machine wherein the radius of the main trajectory is varied following the emission of said correction signal, said corrective trajectory being such as to move the centre of the movement trajectory of the machine towards the axis of the stack, and re-establishing said main trajectory for the machine.</p> |
