Patent ID: 6502445
Filing Date: 2003-01-07
Classification: B21C

Abstract:
A coiling machine to wind hot rolled stock such as strip or sheet with a thickness of between 0.5 and 5 mm, arranged downstream of a rolling train (100) and a shears assembly (11) from which the rolled stock emerges along a plane of feed (14), comprising:a turntable assembly (12) rotating around a central axis of rotation (13) parallel to the plane of feed (14), two coiling mandrels (15a, 15b) mounted rotary on the turntable (12) on diametrically opposite sides with respect to the central axis of rotation (13) and with their axes of rotation parallel to the central axis of rotation (13), and an assembly (23) to guide the strip suitable to cooperate selectively with each of the mandrels (15a, 15b), the turntable assembly (12) being able to assume, by rotating, a first angled position wherein a first mandrel (15a or 15b) is in correspondence with the plane of feed (14) and ready to receive the leading end of the rolled stock and to begin coiling, wherein the assembly (23) to guide the strip comprises a plurality of wrapper rollers (24) operating directly on the rolled stock and having their axes of rotation parallel to the central axis of rotation (13) and arranged along an ideal circumference beyond the area occupied by each of the mandrels (15a, 15b) so as to define a circular guide path for the leading end of the rolled stock around the mandrel which is temporally in correspondence with the plane of feed (14), the assembly (23) to guide the strip is normally arranged in a first inactive position outside the turntable assembly (12) and is selectively movable to a second working position, associated with the first angled position of the turntable (12), in which the assembly (23) to guide the strip is suitable to cooperate with the leading end of the rolled stock to guide the leading end of the rolled stock around the first mandrel (15a or 15b).