Tire Sidewall Groove Patterning for Stable Quality and Noise Reduction
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Solution Overview
Problem
Traditional tire manufacturing processes result in unstable tire quality due to defects like pits on the tire tread and uneven wear, leading to high reject ratios and reduced service life, with existing tires also suffering from poor visual appeal and noise issues.
Innovation Solution
A tire design featuring grooves on the side face with pattern units arranged in an array, where each unit is formed by combining straight lines and arcs, and has a diameter greater than 20 mm, along with folding line structures that enhance structural strength and visual differentiation, and a tire mold with convex modules to create these patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional vulcanization process is used, then manufacturing efficiency is maintained, but tire quality is unstable with defects like pits on tread
Solution Approach 1:
The patent extracts and isolates defective areas by creating grooves on the tire sidewall that capture and contain defects during the vulcanization process. This prevents defects from migrating to the tread area, effectively separating the problematic regions from the critical functional areas of the tire.
Solution Approach 2:
The groove structure is pre-designed and pre-positioned on the tire sidewall before vulcanization. This preliminary structural arrangement ensures that when defects occur during vulcanization, they are automatically contained within the groove boundaries rather than spreading to affect the tread quality.
2Shape
If tire sidewall is made smooth, then manufacturing is simple, but visual appeal is poor and noise reduction is limited
Solution Approach 1:
The sidewall surface is segmented into distinct functional zones: smooth areas for structural integrity and patterned areas with grooves and pattern units for visual appeal and noise reduction. This segmentation allows each zone to fulfill its specific function without compromising the others.
Solution Approach 2:
Different surface qualities are applied to different locations on the tire sidewall. The groove regions provide visual appeal and noise reduction where needed, while maintaining smooth surfaces in areas requiring structural strength. The pattern units with specific geometries (circles, polygons, waves) are strategically placed to enhance visual appeal without adding overall structural complexity.
3Shape
If pattern units are small, then manufacturing precision is high, but visual effect is poor and noise absorption is reduced
Solution Approach 1:
The patent specifies optimal parameter ranges for pattern unit dimensions (2-10mm size, 0.5-2mm spacing) that balance visual effectiveness with manufacturing feasibility. These parameter changes ensure that pattern units are large enough to provide visible visual appeal and adequate noise absorption surface area, while remaining small enough to be manufactured with conventional precision capabilities.
4Strength
If folding line structures are added to pattern units, then structural strength is enhanced and visual differentiation is improved, but manufacturing complexity increases
Solution Approach 1:
Folding line structures are integrated into the pattern units with curved and angular geometries that provide structural reinforcement through folded configurations. These folding lines create crease patterns that strengthen the rubber material while simultaneously enhancing visual differentiation when the tire is in use.
Data Source
AI summary
The disclosure provides a tire and a tire mold. The tire includes: a tire body, at least one groove is formed in the side face of the tire body, a plurality of pattern units are disposed in the groove, the plurality of pattern units are arranged in the groove in an array and protrude out of the bottom wall of the groove, the pattern unit is of a polygonal structure, and the length of at least one side or diagonal line in the polygonal structure is greater than 20 mm; or the pattern unit is of a circular structure, and the diameter of the circular structure is greater than 20 mm. With structure of the tire of the disclosure, the problem of unstable tire quality in the relevant art is solved.