Pore-free tyre segmental mold with dual damascene composite structure, pore-free tyre segmental mold pattern block with dual damascene composite structure and method

Abstract

The invention relates to a pore-free tyre segmental mold with a dual damascene composite structure, a pore-free tyre segmental mold pattern block with a dual damascene composite structure and a method. The pattern block comprises a pattern block body made of a first metal material and mosaic structures made of a second metal material, wherein the mosaic structures are inlaid in positions close to the inner peripheral surface of the pattern block body, which is used for forming a pattern surface; the pattern block is provided with an exhaust passage communicated with the inner peripheral surface and the exterior of a segmental mold cavity; the pattern block body and the mosaic structures are assembled to form the pattern block; the first metal material and the second metal material are both suitable for tyre vulcanization, and the intensity of the first metal material is higher than that of the second metal material; the exhaust passage comprises exhaust gaps formed between the mosaic structures and the adjacent pattern block body. The pattern block provided by the invention is formed by compositing the two materials; the intensity of the metal material of the pattern block body is higher than that of the metal material of the mosaic structures corresponding to ring-like pattern forming parts, all parts receiving extrusion force, friction force and the like during use are all made of the first metal material, all the pattern forming parts are made of the second metal material, the vulcanization efficiency is high and the tyre surface quality is guaranteed.

Description

technical field [0001] The invention relates to a tire mold, in particular to a bimetal mosaic compound structure non-porous tire flexible mold, pattern block and method. Background technique [0002] During the tire vulcanization process, in order to release the air in the mold cavity so that the rubber can be evenly distributed in the mold, the existing tire molds are provided with multiple vent holes on the mold cavity. Drilling is usually used to form the required vent holes. After the drilling process is completed, the burrs at the end of the holes need to be trimmed, which increases the mold manufacturing process and increases the manufacturing cost of the mold; on the other hand, during the vulcanization process In the process, since the exhaust in the tread area is discharged through circular air holes, these air holes are usually located on the top surface of the inner tube of the mold and penetrate to the outer surface of the mold. Under high pressure and high heat...

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