Tire Sub-Assembly Alignment Using Temporary Securing Elements
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Solution Overview
Problem
The existing methods for manufacturing tyre assemblies struggle with aligning the first and second structures, leading to slippage and loss of tension, which affects the flattening of the tread under load.
Innovation Solution
A method is proposed to securely fix the first and second structures using a securing element, ensuring they remain parallel and aligned, preventing movement, and then cutting the securing element to form subassemblies, which are used to manufacture a tyre with improved tread flattening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first structure and second structure are handled during manufacturing, then the structures can be positioned and assembled, but one structure slips relative to the other causing misalignment
Solution Approach 1:
The patent applies preliminary action by providing securing elements that temporarily fix the first and second structures together during handling and assembly operations. These securing elements are applied before the final assembly step to prevent slippage and maintain alignment throughout the manufacturing process, ensuring precise positioning when the structures are handled and moved.
2Manufacturing precision
If securing elements are used to fix structures, then alignment is maintained, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the securing function into discrete, separate securing elements that can be independently applied and removed. Each securing element acts as an independent unit that temporarily holds structures in alignment, allowing the complex task of maintaining alignment to be broken down into simple, manageable steps that reduce overall process complexity.
Solution Approach 2:
The patent applies the principle of cheap short-living objects by using simple, inexpensive securing elements that are applied temporarily during manufacturing and then removed or discarded. These securing elements serve their purpose during handling and assembly, ensuring alignment, and are not intended for long-term use in the final product, thereby minimizing added complexity and cost.
3Manufacturing precision
If structures are fixed securely, then movement is prevented and alignment is maintained, but production speed decreases
Solution Approach 1:
The patent applies the extraction principle by removing the securing elements after they have served their purpose of maintaining alignment during handling and assembly. This allows the structures to be permanently fixed in their correct positions without the temporary securing elements still attached, enabling continuous production flow and maintaining high productivity while ensuring precision during critical assembly phases.
Data Source
AI summary
A method for manufacturing (S) a subassembly (3) for a tire (4) comprising the following substeps: providing an assembly comprising a supporting structure (14) comprising supporting filamentary elements linking a first structure (10) of filamentary elements and a second structure (12) of filamentary elements, aligning (S1) the first structure (10) and the second structure (12), securely fixing (S4) the first structure (10) onto the second structure (12) using a securing element (18), and cutting (S5) the assembly (1) along the securing element (18) so as to separate said securing element (18) from the rest of the assembly (1) and to obtain at least one subassembly (3) without securing element (18).