Tire die for producing precure tread

Abstract

The invention discloses a tire die for producing a precure tread. The tire die for producing the precure tread comprises a base, wherein a plurality of inner moving blocks I and a plurality of inner moving blocks II are arranged on the base and distributed at intervals to form an annular structure; a closed curved surface which is in close fitting with the tread is formed at the outermost ring of the annular structure; a plurality of annularly-distributed patterned blocks are arranged at the outer ring of the annular structure; a storing space of the precure tread is formed between each patterned block and the corresponding inner moving block I; an operating ring is coaxially arranged at an inner ring of the annular structure; the operating ring is connected with each inner moving block I and each inner moving block II through corresponding push-pull devices; when the operating ring is propped, the inner moving blocks I and the inner moving blocks II are dragged through the push-pull devices to move toward the center of the annular structure.

Description

technical field [0001] The invention belongs to the technical field of retreaded tires, and in particular relates to a tire mold for producing annular precured tread. Background technique [0002] my country is the world's largest rubber consumer, and at the same time, my country is a country with very scarce rubber resources, and the contradiction between supply and demand is prominent, which promotes the rapid development of the tire retreading industry, and the amount of old tire retreading is increasing year by year. The form of tire retreading has been changed from heat-inverted bias-ply tires to pre-vulcanized cold-inverted radial tires. [0003] There are two types of pre-cured tread rubber, ring and strip, and ring pre-cured tread is the only tire retreading system that is pre-cured without joints. [0004] Annular pre-vulcanized treads are generally vulcanized at high temperature for a short time, requiring special annular pre-vulcanized tread vulcanization equipme...

AI Technical Summary

Problems solved by technology

[0004] Annular pre-vulcanized treads are generally vulcanized at high temperature for a short time, requiring special annular pre-vulcanized tread vulcanization equipment and special molds, and the investment cost is relatively large, especially for engineering tire annular pre-vulcanized treads. Vulcanization equipment and special molds are highly specific and generally cannot be used for other purposes

Images