Tyre Cutting Group Translation for Barycentric Grip
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Solution Overview
Problem
Current tyre manufacturing processes require repeated manual adjustments and increased labor costs when changing the cutting length of reinforcement elements, leading to inaccuracies in deposition on the tyre components due to fixed pickup and transfer positions.
Innovation Solution
The process involves translating the cutting group along the feeding direction to maintain a barycentric grip condition, allowing for accurate and repeatable deposition of reinforcement elements by adjusting only the cutting group's position, thus simplifying setup and ensuring consistent positioning on the forming support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pickup and transfer positions are fixed, then the apparatus structure is simple, but the deposition accuracy deteriorates when changing cutting length
Solution Approach 1:
The patent implements a movable cutting group that can be translated along the feeding direction of the reinforced continuous band-like element. This dynamic positioning allows the cutting group to maintain a barycentric grip condition relative to reinforcement elements of varying lengths, ensuring accurate deposition without requiring complex adjustments to the entire apparatus structure. The cutting group's position is adjusted based on the desired cutting length while keeping the gripping and positioning members relatively simple.
2Adaptability or versatility
If manual adjustments are made for each cutting length change, then flexibility is improved, but labor cost and time increase
Solution Approach 1:
The patent enables the cutting group to automatically maintain the barycentric grip condition through its translational capability. When the cutting length needs to be changed, the cutting group translates along the feeding direction to the appropriate position, automatically adapting to the new reinforcement element length without requiring manual intervention for pickup and transfer position adjustments. This self-adjusting mechanism reduces both labor costs and setup time while maintaining flexibility.
3Manufacturing precision
If the cutting group position is fixed, then the apparatus is easier to operate, but the deposition accuracy deteriorates for varying cutting lengths
Solution Approach 1:
The cutting group is designed to be movable along the feeding direction while the gripping and positioning mechanisms remain relatively fixed and simple. This selective dynamic positioning allows the system to maintain high deposition accuracy for reinforcement elements of different lengths without significantly complicating the overall operation. The cutting group's position can be adjusted based on the required cutting length, ensuring that the barycentric grip condition is maintained while keeping the apparatus easy to operate.
Data Source
AI summary
Building the carcass structure of tyres for vehicle wheels includes associating, at each end edge of a carcass ply, at least one respective annular reinforcement structure formed by depositing along a circumferential direction a plurality of reinforcement elements having a first length. Such elements are cut to size from a reinforced continuous band-like element fed to a cutting group arranged at a first operative position adapted to allow a barycentric grip of the reinforcement elements. The cutting group can translate along a feeding direction of the band-like element to a second operative position for cutting to size a plurality of second reinforcement elements having a second length different from the first length. The second operative position is defined on the basis of the second length, so as to have a barycentric grip of the second reinforcement elements too.