All-steel radial tire capable of improving tire body cord thread elongation rate

Abstract

The invention discloses an all-steel radial tire capable of improving the tire body cord thread elongation rate, relates to the field of radial tires, and is simple in structure, compared with the prior art, by limiting the extension rate range of the tire body cord thread, the tire body molding plane width is correspondingly adjusted, and the length of the tire body cord thread of a blank inner tire is increased, the twitching amount and time of tire body cords are reduced, on the premise that the defects of cord bending, uneven tire interior and the like of a finished tire are avoided, the side part of the tire blank is quickly and tightly matched with the side plate of the mold in the vulcanization shaping process, extrusion on the vulcanized rubber bag is formed through the shaping pressure effect of the rubber bag on the blank, and the concentrated space of bubbles is eliminated; bubbles on the side part of the embryo are uniformly dispersed, the defective rate of broken holes in the tire side in the tire manufacturing process is reduced, and the product performance and the service life are improved.

Description

technical field [0001] The invention relates to the field of radial tires, in particular to an all-steel radial tire with improved elongation of carcass cords. Background technique [0002] In the prior art, the 19.5-inch low-profile series of all-steel radial tires is a high-incidence product of sidewall bad holes. The main reasons are: [0003] 1. The extruded parts and skeleton materials in production are not dense and have pores; [0004] 2. The 19.5-inch low-profile sidewall has a small deformation area, and the end points of the cushion rubber, apex rubber, apex film, and sidewall film are closely divided. It is difficult to completely exhaust the end-point air bubbles during the forming process, and the end points are prone to air pockets. ; [0005] 3. When the molded green tire is vulcanized and molded, with the increase of the setting pressure, the sidewall area finally contacts the side plate of the mold. Gather sideways. [0006] Under the joint influence of...

AI Technical Summary

Problems solved by technology

However, it has been verified by experiments that the above-mentioned traditional method has no significant improvement effect on the 19.5-inch low-profile series of all-steel radial tires.

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