For tire formation you hold down and the roller and for tire formation hold down and for tire formation

摘要

PPROBLEM TO BE SOLVED: To provide a pressing roller for tire molding, which eliminates a rolling failure and occurrence of wrinkles in a side wall clinch rubber, which dispense with replacement every time set-up change is made in the tire molding, and which also solve the problem of mixing of a foreign substance due to application of excessive force to the roller, and to provide a pressing roller device for tire molding. PSOLUTION: The pressing roller 2 for the tire molding is equipped with an expandable bladder having a circular cross section and a flow-in means for making a pressurizing medium flow into the inside of the bladder 1, and is configured so that the bladder expanded by the pressurizing medium is pressed against the side wall clinch rubber b to make it roll in a state that the bladder is elastically deformed. The pressing roller device A for tire molding includes the pressing roller for tire molding, a pressurizing medium supply 4, a pressure adjuster 5, and a mechanical section for operating the pressing roller for tire molding in a direction for rolling in the side wall clinch rubber. PCOPYRIGHT: (C)2011,JPO&INPIT