Pneumatic radial tire producion method and belt tread assembly transfer apparatus used for the same
A technology for radial tires and manufacturing methods, applied to manufacturing methods and the assembly of belt treads used therein, and the field of pneumatic radial tire manufacturing, capable of solving the problems of large differences in secondary raw tires and the impact of tire uniformity, etc., To achieve the effect of improving uniformity
Inactive Publication Date: 2006-11-29
THE YOKOHAMA RUBBER CO LTD
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, when the primary raw tire and the belt-tread assembly are crimped together in a state where the belt-tread assembly is gripped by a conveying device with a flat gripping surface, the finished secondary green tire After the tread shape is completed, it is parallel to the tire axial direction, but it is deformed in such a way that it is gradually concave inward in the tire diameter direction
Therefore, the difference between the shape of the secondary raw tire and the shape of the mold becomes larger, which has a bad influence on the uniformity of the tire
[0005] In addition, in the conventional method of manufacturing a pneumatic radial tire, when crimping a cylindrical belt-tread assembly to an annular primary tire, it is difficult to press both ends of the laminated belt. squeezed into the junior sidewall
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0032] Pneumatic radial tires (tire size: 225 / 50R16), the primary raw tire including the carcass is formed, and the cylindrical belt tread assembly including the belt is formed at the same time, and the belt tread is formed by various conveying devices. The assembly was conveyed to the outer peripheral side of the primary raw tire, and the belt-tread assembly (Examples 1 to 2 and Conventional Example) was pressure-bonded to the primary raw tire inflated into an annular shape.
[0033] In Example 1, such as Figure 4 As shown, a conveying device having a structure in which a curvature (radius of curvature: 600 mm) is imparted to the gripping surface of the gripping member and the gripping surface is separated in the width direction of the belt-tread assembly was used. In Example 2, on the conveying device used in Example 1, a rough surface sheet was attached to the holding surface. In a conventional example, a conveyance device is used in which the gripping member has a gripp...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A pneumatic radial tire production method and a belt tread assembly transfer apparatus used for the method. The production method enables to improve uniformity of a tire and to prevent a separation failure caused by trapped air. A pneumatic radial tire production method including steps of forming a primary green tire including carcass layers, forming a hollow-cylindrical belt tread assembly including belt layers, transporting the belt tread assembly to the outer peripheral side of the primary green tire by a transfer apparatus, and adhering by pressing the belt tread assembly to the primary green tire inflated in a toroidal shape, wherein the primary green tire and the belt tread assembly are adhered by pressing while the transfer apparatus restraining both side sections of the belt tread assembly and at the same time inflation of a center section is being allowed.
Description
technical field [0001] The present invention relates to a method for producing a pneumatic radial tire in which a cylindrical belt-tread assembly is press-bonded with a primary raw tire swelled into a circular ring in diameter. More specifically, it relates to improving the uniformity of the tire, and further A method for manufacturing a pneumatic radial tire capable of preventing peeling failure caused by air stagnation, and a conveying device for a belt-tread assembly used therein. Background technique [0002] When manufacturing a pneumatic radial tire, it is carried out to shape a primary green tire including a carcass ply, and simultaneously shape a cylindrical belt-tread assembly including a belt, and transfer the belt-tread assembly to a conveyor. It is conveyed to the outer peripheral side of the primary raw tire, and the belt-tread assembly is pressure-bonded to the primary raw tire inflated into an annular shape (for example, refer to Patent Document 1). [0003] ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/30B29D30/26
CPCB29D30/2607
Inventor 花田亮治白土总一郎
Owner THE YOKOHAMA RUBBER CO LTD