Molding method of high-speed-resisting belted layer of off-road vehicle tire

Abstract

The invention discloses a molding method of a high-speed-resisting belted layer of an off-road vehicle tire. Aramid cord fabrics are used as #1 to #4 belted layers; #5 to #6 belted layers are made of nylon cord fabrics; the nylon cord fabric with the width of 30mm to 50mm is used, and each two layers of the nylon cord fabrics cover two end parts of the belted layers; the end parts are filled through adopting edge covering rubber strips with the width of 10mm to 20mm. Ultrahigh-strength aramid cord threads are used as #1 to #4 belted layers of a stressing main body for bearing driving stress of the tire; the number of layers of the belted layers is reduced and the heat generated by the tire is reduced. The #5 to #6 belted layers are made of the nylon cord fabrics with relatively sparse linear density so that the bonding of the cord threads and rubber is good; meanwhile, a cutting-off angle of the #5 to #6 belted layers is 80 degrees or more, so that the hooping effect of the middle part of a crown of the tire is enhanced and the strain caused by the fact that the tire rolls is reduced; the two end parts of each two layers of belted layers are covered with the large-angle nylon cord fabrics and the rubber strips with low heat generation are filled, so that the rigidity of the end parts of the belted layers can be enhanced; high-frequency deformation and heat generation in a high-speed driving process are reduced, so that high-speed performance of the off-road vehicle tire is improved.

Description

technical field [0001] The invention relates to a belt layer structure of a tire, in particular to a molding method of a high-speed belt layer of an off-road vehicle tire. Background technique [0002] In the past, off-road vehicles generally drove on roads with poor road conditions. In order to meet the requirements of tread resistance to tearing and puncture resistance, horizontal tread patterns were mostly used. The pattern blocks were thicker and thicker, and the belt layer structure was 0 High-strength belt layer + 3-layer steel wire belt layer or 4-layer steel wire belt layer with buffer layer. The current off-road vehicles often drive on regular roads, especially on highways, and the speed reaches K level or above. At this time, the belt layer of the original tire will generate shear heat. Excessive heat generation will lead to a decrease in the strength of the belt layer, causing Belt layer delamination, cord breakage and other failures, and tire blowout accidents i...

AI Technical Summary

Problems solved by technology

The current off-road vehicles often drive on regular roads, especially on expressways, and the speed reaches K level or above. At this time, the belt layer of the original tire will generate shear heat. Excessive heat generation will lead to a decrease in the strength of the belt layer, causing Belt layer delamination, cord breakage and other failures, and tire blowout accidents in severe cases

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