Rotary Distributor Wire Cutting for Tyre Reinforcement Angles
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Solution Overview
Problem
Existing methods for manufacturing crown reinforcements in radial tyres face challenges when dealing with shorter wire lengths, particularly for tyre beads and radially internal sidewall reinforcements, as they become increasingly difficult to implement effectively across various angles.
Innovation Solution
A method involving a rotary distributor and a conveying member with a deflector to cut and deposit sections of reinforcement wire into an elastomer matrix on a rotating support, allowing for controlled deposition angles and lengths, integrated into a tyre manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the whip-lash wire projection technique is used to manufacture crown reinforcements, then it can cover the usual range of angles and manufacture radial carcass reinforcements, but it becomes increasingly problematic to implement when the wire size is small
Solution Approach 1:
The invention segments the continuous wire into discrete sections by introducing a cutting mechanism that divides the wire into multiple segments during the deposition process. This segmentation allows for precise placement of smaller wire sections while maintaining the ability to manufacture reinforcements at various angles, thereby resolving the contradiction between versatility and ease of operation with small wire sizes.
Solution Approach 2:
The invention introduces an intermediary cutting mechanism between the wire supply and the deposition point. This intermediary device facilitates the handling of small wire sizes by controlling the wire segmentation and placement, making the process easier to implement while preserving the ability to work with various angles and configurations.
2Adaptability or versatility
If sections of short wire lengths are deposited adjacently on a support, then it enables manufacture of reinforcements in tyre beads and radially internal sidewalls, but requires precise control of deposition angle and position
Solution Approach 1:
The invention employs dynamic adjustment mechanisms that allow the deposition system to adapt its angle and position in real-time during the manufacturing process. This dynamic capability enables precise control over where and how wire sections are deposited, facilitating the manufacture of reinforcements in various tyre components while maintaining high manufacturing precision.
Solution Approach 2:
The invention incorporates feedback mechanisms that monitor the deposition process and adjust parameters such as wire feed rate, deposition angle, and positioning accordingly. This feedback control ensures that sections of short wire lengths are deposited with the required precision and accuracy, enabling versatile manufacture of reinforcements in tyre beads and sidewalls.
3Manufacturing precision
If a rotary distributor with deflector is used to guide and cut wire sections, then it enables controlled deposition of wire sections at desired angles, but increases device complexity
Solution Approach 1:
The invention merges multiple functions into the rotary distributor assembly, combining wire guiding, section cutting, and deposition control into a single integrated mechanism. This consolidation reduces the overall number of separate components and simplifies the device architecture while maintaining the precision required for controlled wire section deposition at desired angles.
Solution Approach 2:
The rotary distributor is designed as a multi-functional device that performs wire guidance, cutting, and deposition control simultaneously. This universal design approach allows a single mechanism to handle multiple tasks that would otherwise require separate devices, thereby reducing device complexity while preserving manufacturing precision.
Data Source
AI summary
The manufacturing device comprises a rotary distributor 6 in rotation about a rotation axis R, the rotary distributor comprising at least one elbowed tube 61, the elbowed tube having a corridor for receiving the wire on the radially internal side and forming output guidance on the externally radial side. The device comprises a member for conveying to the distributor comprising a tubular portion 53 substantially perpendicular to the rotation axis R, a space in the radial direction being provided between the tubular portion 53 and the elbowed tube 61. A knife 7 is disposed in the space between the rotary distributor and the conveying member. The conveying member and the distributor are coupled and both rotary, the knife 7 being mounted on a knife holder 70 for purposes of adjustment and whose rotation is locked during cutting. The rotary distributor comprises a central tube 51, and inlet orifice 52 of which is disposed substantially on the rotation axis R of the rotary distributor, the tubular portion 53 coming in line with the central tube 51.