Removable Tire Mold Insert for High-Contrast Sidewall Markings
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Solution Overview
Problem
Existing tyre curing molds impair the appearance of high-contrast patterns on tyre sidewalls due to smooth surfaces molded by inserts, limiting their extension and visibility.
Innovation Solution
A tyre curing mold with removable inserts featuring a first texture pattern on the body and a second texture pattern on the insert, where the second pattern contrasts with the marking pattern and minimally with the first, ensuring the insert-molded surface does not interfere with the surrounding texture, enhancing visibility and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a smooth insert surface is used to mold markings, then the marking pattern is clearly defined, but the surrounding smooth surface reflects light and interferes with high-contrast patterns
Solution Approach 1:
The insert surface is divided into two distinct zones: a first zone with a first texture pattern that matches the surrounding tyre texture, and a second zone with a second texture pattern that provides the marking pattern. This local differentiation allows the marking area to have enhanced visibility while the surrounding area maintains the high-contrast texture, resolving the contradiction between clear marking definition and light reflection interference.
2Illumination intensity
If high-contrast texture patterns are extended over the entire tyre sidewall, then visibility is improved, but the appearance is impaired by smooth surfaces from inserts
Solution Approach 1:
The insert surface features a first texture pattern in a first zone that is identical or similar to the texture pattern on the tyre body, creating visual continuity and maintaining appearance. A second texture pattern in a second zone provides the marking pattern with enhanced contrast. This local quality differentiation allows the high-contrast pattern to extend over the entire sidewall without the appearance impairment caused by smooth insert surfaces.
3Adaptability or versatility
If removable inserts are used to change marking patterns, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The insert is divided into multiple zones with different texture patterns (first zone with first texture pattern, second zone with second texture pattern). This segmentation allows the insert to maintain adaptability for changing marking patterns while integrating seamlessly with the tyre body texture, reducing the visual complexity of the overall mould structure.
Data Source
AI summary
A mold (20) for curing a tire comprises at least one body, such as a shell (21) or a lining, and at least one insert (22) mounted removably in a housing of the body, the molding surface (23) of the body having a first texture pattern (24), the molding surface (25) of the insert having a marking pattern (26). The molding surface of the insert also has a second texture pattern (27) chosen such that the surface molded by the second texture pattern contrasts with the surface molded by the marking pattern (26), and contrasts barely, if at all, with the surface molded by the first texture pattern (24).