Vehicle Tire Sidewall Sectional Construction Method
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Solution Overview
Problem
Current vehicle tire production processes are complex and inefficient, particularly in the construction of sidewalls, which affects the tire's quality and concentricity.
Innovation Solution
A method for producing vehicle tires that involves creating sidewalls with at least two sections: a first section laid as a strip around a laying unit or preformed carcass, and a second section spirally wound onto the first section, allowing for improved material preparation and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sidewalls are constructed as a single component by placing them on a drum in one revolution, then the construction process is simple, but the material preparation effort is high and flexibility for contour changes is limited
Solution Approach 1:
The sidewall is divided into multiple sections (first section and second section) that can be constructed using different methods. The first section is placed on the drum in one revolution, while the second section is applied by spirally winding a strip, allowing each section to be optimized for different requirements and enabling flexible contour changes.
Solution Approach 2:
The sidewall construction transitions from a static single-component approach to a dynamic multi-section approach where different sections can be independently adjusted. The spirally wound second section allows for continuous contour adjustment and adaptation to different tire designs.
2Productivity
If sidewalls are formed and joined in a single process step, then the process is efficient, but the concentricity and quality of the tire are compromised
Solution Approach 1:
The sidewall construction is segmented into multiple steps: first placing the first section on the drum, then separately applying the second section by spirally winding. This segmentation allows each section to be precisely positioned and controlled independently, improving overall concentricity while maintaining productivity.
Solution Approach 2:
The first section of the sidewall is constructed and positioned on the drum before the second section is applied. This preliminary action allows for proper alignment and positioning of the first section, which serves as a foundation for the second section, thereby ensuring better concentricity in the final product.
3Adaptability or versatility
If a wide range of sidewall variants are produced using current methods, then various tire designs are achievable, but the complexity of material preparation and logistics increases significantly
Solution Approach 1:
By segmenting the sidewall into sections that can be independently constructed, the system can produce various sidewall variants by simply changing the configuration or material of specific sections rather than preparing entirely different sidewall components, thereby reducing material preparation complexity.
Solution Approach 2:
The invention allows for parameter changes in the sidewall construction by modifying the spirally wound second section (strip width, winding tension, spiral pitch) to create different sidewall variants without changing the fundamental construction process or material preparation infrastructure.
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 2a~2b
AI summary
The invention relates to a method for manufacturing a vehicle tire, wherein the vehicle tire comprises at least one carcass, at least two sidewalls and a belt pack, wherein at least one sidewall has at least two sections and the manufacture of the at least one sidewall comprises at least the following steps: manufacturing a first section of the at least one sidewall by placing a first strip of at least one rubber compound onto the laying unit or onto a preformed carcass, wherein the first strip can be laid once around the laying unit, and manufacturing a second section of the at least one sidewall by spirally winding a second strip of at least one rubber compound onto the laying unit or onto the preformed carcass, wherein either the first section or the second section is manufactured first.Furthermore, the invention relates to a device and a vehicle tire.