AIR TYPE FENDER MANUFACTURING METHOD, AND AIR TYPE FENDER MANUFACTURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To perform the folding-back of an end part efficiently while preventing the damage of the end parts of a fender forming member.SOLUTION: A hollow member 18 is bulged outward in the radial direction by feeding compression air to the internal space of the hollow member 18 so that the portion of a fender forming member 2 adhered to an outer peripheral surface 1802 of the hollow member 18 by the bulge of that hollow member 18 is scraped from the outer circumference 1802 of the holler member 18, and is raised from the portion of the fender forming member 2 adhered to the end part of a cylindrical part 1202. Next, a lodging member 22 is moved to a lodging position P2 to push the expanded hollow member 18 to the side of a curve surface portion 1204, so that a portion 2A of the raised fender forming member 2 is fell to the side of the curve surface portion 1204. In this state, a molding drum 12 is once turned by a rotary part 16 so that a portion 2A of the fender forming member 2 is fell to the side of the curve surface portion 1204 over the whole circumference of a cylindrical portion 3602A of a turn-back case 36 radially to the outer side of the cylindrical portion 3602A.