Full-scale preform die of all-steel radial tyre tread

Abstract

The invention relates to a full-scale preform die of an all-steel radial tyre tread. The preform die has a central symmetry structure and comprises a strake rubber channel at the lower part, and a tread rubber channel at the upper part; the full-scale preform die is characterized in that the strake rubber channel at the lower part penetrates from the left to right, and the height in the middle of the strake rubber channel is less than the heights of the two sides of the strake rubber channel. The height of the middle of the tread rubber channel is 27mm, and the width of the middle of the strake rubber channel is 90mm. A tyre tread obtained by adopting the full-scale preform die is characterized by comprising tread rubber, wherein strake rubber layers are on two sides of one surface in which the tread rubber is connected with a belted layer, and the strake rubber layer on the two sides are connected through a transition strake rubber layer. The transition strake rubber layer is 2mm thick. A thin strake rubber cushioning layer is arranged between the tread rubber and the belted layer, so that the problem that the shoulder separation tread rubber generates excessive heat to cause the separation of the tread rubber and the belted layer can be solved.

Description

technical field [0001] The invention relates to an all-steel radial tire tread full-divided bezel, which belongs to the technical field of tire manufacturing. Background technique [0002] In the prior art, the pre-profiles used in the production of all-steel radial tire treads are shoulder-split pre-profiles and full-split pre-profiles. Shoulder split pre-sizing is mainly designed for low-speed, short-distance tubeless tires in mining areas; full-splitting pre-sizing is mainly designed for high-speed, medium and long-distance tubeless tires. The tread rubber of the shoulder split tread is in direct contact with the belt layer rubber. In the actual use process, due to the high heat generation of the tread rubber, it is easy to cause delamination between the tread rubber and the belt layer rubber, which reduces the use of the tire. In serious cases, it will cause a tire blowout and increase potential safety hazards. However, the thickness of the shoulder wing rubber in the ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a fully divided pre-sealed all-steel radial tire tread, so that there is a thin layer of shoulder rubber between the tread rubber and the belt layer rubber Buffer layer, to solve the problem of delamination between the shoulder tread rubber and the belt layer due to excessive heat generation

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