Split Belt Bandage Winding for Strong, Conductive High-Speed Tires
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Solution Overview
Problem
Existing methods for producing belt bandages on vehicle tires are inefficient and do not ensure high strength, particularly at high speeds, and existing vehicle tires with conductive belt rubber coatings lack a simple and effective method to maintain electrical conductivity while ensuring tire durability.
Innovation Solution
The method involves winding two bandage parts from separate or sequential use of a single material strip using two or one winding head, with overlapping sections to enhance strength, and incorporating a conductive rubber element in the tread gap to maintain electrical conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a wound bandage is applied to the belt of a vehicle tire, then the belt area strength is improved, but the manufacturing complexity increases due to the winding process requirements
Solution Approach 1:
The bandage is divided into two separate bandage parts (first bandage part and second bandage part) that are wound separately on the belt. This segmentation allows for simpler manufacturing of each individual part while achieving the overall strength benefit of a comprehensive bandage coverage on the belt area.
Solution Approach 2:
The first bandage part and second bandage part are combined on the belt to form a complete wound bandage system. The ends of these parts are joined together to create a continuous bandage structure, merging the functionality of multiple components into a unified strength-enhancing system.
2Strength
If the bandage parts are wound with overlapping sections, then the belt bandage strength is improved, but the material consumption increases
Solution Approach 1:
The bandage parts are wound with overlapping sections where the overlap is partial rather than complete. This partial overlap provides sufficient strength enhancement for high-speed tire applications while avoiding the excessive material consumption that would result from complete or redundant overlapping.
Solution Approach 2:
The winding parameters are optimized to achieve the desired strength with minimal material usage. The overlap width, winding tension, and number of layers are controlled to provide just enough reinforcement for high-speed operation without unnecessary material consumption.
3Reliability
If a gap is left between the bandage parts, then the electrical conductivity is maintained through the conductive rubber element, but the structural continuity is reduced
Solution Approach 1:
The bandage is intentionally segmented into two parts with a gap between them, allowing the conductive rubber element to pass through the gap and establish electrical connection. This segmentation prioritizes electrical conductivity functionality over continuous structural coverage.
Solution Approach 2:
The conductive rubber element acts as an intermediary that bridges the gap between the first and second bandage parts. This intermediary component maintains electrical conductivity across the gap while allowing the bandage parts to be wound separately and joined at their ends.
4Productivity
If two winding heads are used to produce the belt bandage, then the production efficiency is improved, but the device complexity increases
Solution Approach 1:
The winding operation is segmented into two independent processes, each handled by a separate winding head. This allows simultaneous winding of the first and second bandage parts, significantly improving production efficiency compared to sequential winding with a single head.
Solution Approach 2:
Multiple winding heads are merged into a single integrated winding device that can operate simultaneously on different sections of the belt. This combination of multiple functional units in one device achieves high productivity while managing the complexity through integrated design.
Data Source
Figure 1~3
Figure 4~6
AI summary
Method for producing a belt bandage (2) designed as a spool bandage, made from at least one electrically non-conductive material strip (4, 4'), divided in the axial direction into two bandage parts (6, 7) while leaving a gap (8), on a belt (1) of a vehicle tire, the belt layers (1a, 1b) of which have an electrically conductive belt rubber coating and which is provided with a tread (3) consisting of electrically non-conductive rubber material and penetrated in the radial direction at the position of the gap (8) by a strip-shaped, electrically conductive rubber element (3a). In this process, either one bandage part (6) is spooled with a first spooling head and the other bandage part (7) is spooled with a second spooling head, each from a separate material strip (4, 4'), or the two bandage parts (6, 7) are spooled sequentially with a single spooling head and a single material strip.