Winding Support for Tire Blanks Splicing
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Solution Overview
Problem
Conventional tire building methods on a tire building drum face issues with uneven surfaces from roller lever systems, leading to suboptimal splicing of tire parts and increased wear and tear on side-curved bellows, resulting in lower production quality and frequent replacements.
Innovation Solution
A method utilizing a completely closed metal bell as a winding support, which provides a smooth and closed surface for splicing, and is moved pneumatically or with a double-acting pneumatic cylinder for efficient operation, potentially with a non-stick coating to prevent material deformation, and made of materials like steel or aluminum for easy coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a roller lever system is used to turn up the sidewalls, then the sidewalls can be folded around the bead cores, but the uneven surface of the rollers prevents optimal splicing of the material web
Solution Approach 1:
The system is divided into two functional parts: the roller lever system for sidewall folding and the winding support for material web splicing. The winding support acts as a separate, movable platform that provides a dedicated smooth surface for splicing operations, while the roller levers continue to perform their sidewall folding function independently.
Solution Approach 2:
The winding support serves as an intermediary element between the material web and the roller levers. It provides a smooth intermediate surface that enables proper splicing of the material web, while allowing the roller levers to operate underneath it for sidewall folding without directly contacting the material web during splicing.
2Ease of operation
If side-curved bellows are used to press the sidewalls against the curved carcass, then the sidewalls can be turned up, but the bellows are subject to high wear and tear requiring frequent replacement
Solution Approach 1:
The winding support extracts the splicing function from the roller lever system, allowing the roller levers to focus solely on their sidewall folding function. This separation reduces the operational complexity and wear on each component, particularly on the side-curved bellows that work in conjunction with the roller levers.
3Manufacturing precision
If the winding support provides a completely closed smooth surface for splicing, then splicing quality is improved, but the device complexity increases
Solution Approach 1:
The winding support is designed as a flexible, bell-shaped structure that can be easily moved back and forth in the axial direction. This simple geometric form provides a completely closed smooth surface when needed for splicing, while requiring minimal structural complexity. The bell shape naturally provides the required smooth, enclosed surface without additional complex components.
Solution Approach 2:
The winding support is made movable rather than fixed, allowing it to be dynamically positioned during the tire building process. It moves into position to provide the smooth splicing surface, then moves away to allow the roller levers to operate underneath. This dynamic behavior eliminates the need for complex fixed structures while maintaining the splicing quality benefits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method ensures high-quality splicing over the entire width of the material web, reducing material deformation and wear, thereby enhancing the production quality of green tires and minimizing the need for frequent replacements of worn parts.
Implementation Method 1
the winding support is moved pneumatically and with a pneumatic cylinder in the axial direction of the tire building drum
Implementation Method 2
the winding support has a non-stick coating in relation to rubber materials
Data Source
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AI summary
The method involves combined splicing of front and rear ends of a tire construction element on a tire construction drum, and forming a closed surface area by a belt sleeve support (1) for combined splicing of material sheets in an optimal manner. A tire core is set with a core clamping device (8), and the belt sleeve support is driven back outwards axially, and radial roller levers (5) are lifted. Tire blanks and the levers are shaped for turning up tire side walls (2). The tire side walls are rolled up with rollers (7) of the roller levers for completing production of the blanks.