Reversing reel and method of operating a reversing reel

A reversing reel (1), comprising:

• a rotor (2);
• a reel mandrel (3), provided with a rotary drive, for winding strip (9) into a coil (8), the reel mandrel (3) being arranged on the rotor (2) eccentrically with respect to an axis of rotation (D) of the rotor (2);
• and
• a driven mandrel support device (4) having a mandrel support (5) that has a bearing head (6) for supporting a free end of the reel mandrel (3),
• wherein the bearing head (6) is movable with the reel mandrel (3), in accordance with a variable position of the reel mandrel (3), when the reel mandrel (3) is transferred from an initial-winding position (A) into a final-winding position (F),
• wherein the mandrel support (5) is a first piston-cylinder arrangement (7) and the mandrel support (5) is supported in a pivotable manner via a mandrel-support bearing (11) on a slide (13) that is movable tangentially to a circular path of the reel mandrel (3), and
• wherein an inclination of the mandrel support (5) and a position of the bearing head (6) are adjustable such that the mandrel support (5) is oriented in accordance with a resultant force R from a weight force of the coil (8) and a tensile force on the strip (9).

A method for winding a metal strip into a coil (8), comprising:

• providing a reversing reel with
• a rotor (2), the rotor (2) having a reel mandrel (3), provided with a rotary drive, for winding the metal strip (9) arranged eccentrically with respect to an axis of rotation (D) of the rotor (2), and
• a driven mandrel support device (4), comprising a mandrel support (5) that has a bearing head (6) for supporting a free end of the reel mandrel (3);
• rotating the rotor (2) to transfer reel mandrel (3) while being initially empty to an initial-winding position (A);
• supporting a free end of the reel mandrel (3) with the bearing head (6) of the mandrel support (5);
• lifting the free end of the reel mandrel (3) with the mandrel support (5);
• initially winding the metal strip (9) in the initial-winding position (A);
• rotating the rotor (2) to transfer the reel mandrel (3) with an initially wound-on coil (8) into a final-winding position (F), wherein the mandrel support (5) is tracked during a rotation of the rotor (2) from the initial-winding position (A) into the final-winding position (F) in such a manner that the bearing head (6) remains in load-bearing engagement with the free end of the mandrel support (5);
• and
• supporting the reel mandrel by a stationary outer bearing and final winding the metal strip (9),
• wherein an adjustment of an inclination of the mandrel support (5) before and/or during the initial winding and/or during the transfer of the reel mandrel (3) into the final-winding position (F) is effected in such a manner that an angle between the mandrel support (5) and a perpendicular essentially corresponds to an angle between a resultant force (R) from a strip tensile force (BZ) and weight force (G) of the coil (8).