Patent ID: 9168576
Filing Date: 2015-10-27
Classification: B21C,Y10T

Abstract:
1. A tower production method, characterized by comprising a first production stage, including the steps of: unrolling and bringing into a planar state a sheet metal (B) wound around a coil (A), bending the planar sheet metal (B) at the lateral direction at varying bending radii (d), creating a bent sheet metal (B′) and winding the bent sheet metal (B′) in the form of a conical coil (A′); transporting the conical coil (A′) to a site of final production, after the sheet metal (B) is first bent and then wound in the first production stage in the form of a conical coil (A′); and a final production stage, including the steps of: feeding the bent sheet metal (B′) unwound from the conical coil (A′) to at least one winding machine ( producing a tower (C) by bending and winding the bent sheet metal (B′) in the winding machine (