Vulcanization ring sheet mold for tire

Abstract

The invention discloses a vulcanization ring sheet mold for a tire. The vulcanization ring sheet mold is assembled by an upper section mold and a lower section mold which are symmetric with each other, wherein the upper section mold and the lower section mold comprise bodies, ring sheet groups and inner rings, the ring sheet groups consist of two or more than two ring sheets and are locked on the bodies through bolts; the inner rings are locked on the bodies through the bolts; a plurality of positioning members are arranged on inner cavities of the upper section mold and the lower section mold at an equal interval manner, matching grooves with the number same as that of the positioning members are formed in the outer edges of the ring sheet groups of the upper section mold and the lower section mold, and the positioning members and the grooves are matched to connect the all ring sheets on the same side of the mold. By utilizing the positioning members and the grooves matched with the positioning members, positioning structures between the bodies and the ring sheet groups are realized, and the peripheral or radial deviation among the ring sheets as well as between the ring sheet groups and the bodies is avoided, so that the positioning accuracy among the ring sheets is improved, the appearance quality and the use performance of the produced tire are guaranteed; meanwhile, machining processes of the positioning members and the grooves are simple, the cost of the mold is low, the service life of the mold is prolonged, and the practicability of the mold is high.

Description

technical field [0001] The invention relates to a tire mold, in particular to a tire vulcanization ring mold. Background technique [0002] At present, there are two types of tire vulcanization molds: rubber mold and ring mold, which are usually composed of closed upper and lower molds. Due to the good air venting of the ring die, there will be no rough rubber on the tread surface of the produced tire, and the appearance quality is better, so it is widely used in the industry. Especially for bicycle tires, due to the small pattern particles or tread texture, ring dies are generally used in production. [0003] Such as figure 1 Shown is a common bicycle tire ring mold 1 ', which is assembled by a symmetrical upper mold and a lower mold. Its upper and lower molds include body 10', ring piece group 20' and inner ring 30', wherein ring piece group 20' and inner ring 30' are locked on the body 10' by bolts 21' and bolts 31' respectively. The ring group 20' of the tire ring mo...

AI Technical Summary

Problems solved by technology

Its upper and lower molds all include the body 10', the ring piece group 20' and the inner ring 30', wherein the ring piece group 20' and the inner ring 30' are locked on the body 10' by the bolt 21' and the bolt 31' respectively, because of this The ring group 20' of the tire ring mold is only fixed by bolts 31'. With the repeated disassembly and assembly of the mold rings, the wear and aging of the use process, the accuracy of the vulcanizing machine and the processing error of the mold manufacturer and other objective factors, in the ring The positioning accuracy between the upper and lower ring sheet groups 20' of the sheet mold, between the same group of ring sheets, and between the ring sheet group 20' and the mold body 10' is decreasing, and the circumferential deviation S1 and radial deviation between each ring sheet are prone to occur. Deviation S2, resulting in the production of tires with pattern misalignment and poor fitting (such as figure 2 , image 3 ), which cannot be trimmed, resulting in waste of cost and affecting the appearance quality

Especially for bicycle tires with fine pattern particles, the pattern misalignment will be particularly prominent, which will reduce the grade of the product and seriously affect the performance of the tire, such as riding jumping and poor comfort

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