Manufacturing method and manufacturing device of tire belt
AssigneeToyo Tire Corporation
InventorJunji Itakura
Life of this patent
Estimating the term…
Abstract
A manufacturing method includes cutting out a sheet-like belt for one full circle of tire by cutting a master roll diagonally with respect to a longitudinal direction between a master roll table 10 and a belt table 14, moving the belt table 14 carrying the cut-out sheet-like belt to a winding position of the sheet-like belt, winding the sheet-like belt around a winding cylinder 50 at the winding position, and unwinding the sheet-like belt from the winding cylinder 50 in a place facing a molding drum 64 and forming a cylindrical belt by winding the sheet-like belt around the molding drum 64.
Claims14
A manufacturing method of a tire belt for manufacturing a sheet-like belt first from a master roll formed by covering multiple belt cords lined up parallel to one another with rubber while aligning a longitudinal direction of the master roll in an extending direction of the belt cords, and then forming a cylindrical belt by winding the sheet-like belt around a molding drum, comprising:
- placing the master roll on a master roll table;
- feeding the master roll from the master roll table to a belt table situated adjacent to the master roll table in a same direction as the longitudinal direction of the master roll;
- cutting out a portion of the master roll placed on the belt table as the sheet-like belt for one full circle of a tire by cutting the master roll diagonally with respect to the longitudinal direction between the master roll table and the belt table;
- wherein the master roll is fixed onto the belt table by attraction when the master roll is cut between the master roll table and the belt table,
- moving the belt table carrying the cut-out sheet-like belt for one full circle of the tire to a winding position of the sheet-like belt;
- wherein in moving the belt table to the winding position of the sheet-like belt, the belt table is moved to the winding position of the sheet-like belt while the cut-out sheet-like belt is fixed onto the belt table by attraction, and in moving the belt table to the winding position of the sheet-like belt, the belt table is moved in a direction orthogonal to a longitudinal direction of the belt table,
- winding the sheet-like belt for one full circle of the tire around a single winding cylinder at the winding position;
- wherein in winding the sheet-like belt for one full circle of the tire around the single winding cylinder at the winding position, the sheet-like belt is wound by moving the winding cylinder in the longitudinal direction of the belt table while the winding cylinder is rotated around a rotation shaft thereof,
- moving the sheet-like belt wound around the winding cylinder to a place facing the molding drum;
- and
- unwinding the sheet-like belt from the winding cylinder in the place facing the molding drum and forming the cylindrical belt by winding the unwound sheet-like belt around the molding drum in one continuous circle, wherein in unwinding the sheet-like belt from the winding cylinder and forming the cylindrical belt by winding the unwound sheet-like belt around the molding drum, the rotation shaft of the winding cylinder and a rotation shaft of the molding drum are placed to be parallel to each other.
Dependencies are inferred from the claim text.