Tyre Building Drum Alignment via Dynamic Positioning
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Solution Overview
Problem
Existing tire manufacturing assemblies face challenges in reducing costs while maintaining quality, as they require precise alignment and movable servers, which increase complexity and costs.
Innovation Solution
The assembly allows for one building drum to be placed out of line but parallel with another, using a transfer ring and movable building drums, enabling simpler server designs and cost reduction by eliminating the need for movable conveyor belts and using a servomotor-driven spindle nut structure for accurate vertical movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If building drums are precisely aligned with common shafts and transport rails, then tyre manufacturing quality is maintained, but assembly complexity and cost increase
Solution Approach 1:
The patent makes the building drums dynamically adjustable in position along the transport rail, allowing them to move between a first position for receiving tyre components and a second position for discharging components. This dynamic positioning capability enables the system to maintain manufacturing precision while reducing the need for complex fixed alignment mechanisms, as the drums can be repositioned as needed rather than requiring permanent precise alignment infrastructure.
2Adaptability or versatility
If servers are designed to be movable towards building drums, then various tyre sizes can be manufactured, but server complexity and cost increase
Solution Approach 1:
The patent applies dynamics to the building drums themselves rather than to the servers. The building drums are made movable along the transport rail, which dynamically adjusts the positioning relationship between servers and building drums. This approach achieves tyre size adaptability while keeping servers simpler, as the adaptability is provided by the movable building drums rather than by complex movable servers.
Solution Approach 2:
Instead of making the servers movable towards the building drums to achieve adaptability, the patent inverts the approach by making the building drums movable along the transport rail. This reversal of which component is made movable simplifies the server design while still achieving the desired versatility for manufacturing various tyre sizes.
3Manufacturing precision
If carcass drums are rotated to precise operative positions, then correct alignment with building drums is achieved, but positioning complexity increases
Solution Approach 1:
The patent reduces positioning complexity by making the entire building drum movable along the transport rail rather than requiring precise rotational positioning of carcass drums. The dynamic linear movement of the building drum provides the necessary alignment flexibility without the complexity of precise rotational positioning mechanisms, simplifying the overall positioning system while maintaining manufacturing precision.
Data Source
Figure 1
Figure 2~3
AI summary
Assembly (1) for making at least a part of a tyre. The assembly (1) comprises a first building unit (3) having a first building drum (4) for a first tyre component and a second building unit (1) having a second building drum (2) for a second tyre component differing from the first tyre component. The assembly further comprises transfer means (5) for transferring tyre components between the first (4) and second (2) building drum. At least one of the building drums can be placed in an operative position in which the axis of rotation of the one building drum is out of line, but parallel, with the axis of rotation of the other building drum placed in an operative position.