Folding System With Independent Arm Drive For Green Tyres
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Solution Overview
Problem
Existing tire blank rolling up installations lack precision in applying rubber layers due to uncontrolled pressure and inflexible arm trajectories, limiting the production of tires with varying shapes and sizes, and hinder the rotation of the barrel, risking damage to the installation.
Innovation Solution
The installation features external sliding and rotary drive means that allow independent arm rotation and sliding, enabling precise pressure control and adjustable arm trajectories, allowing for flexible operation and rotation of the barrel without risking damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the arms are driven in translation and rotation by a pneumatic cylinder fixed to the barrel, then the arms can be moved along the barrel, but the pressure control on the rubber layer becomes imprecise and the trajectory cannot be adjusted
Solution Approach 1:
The drive system is segmented into independent components: a sliding drive means for translational movement and a rotary drive means for rotational movement. This separation allows independent control of each motion, enabling precise pressure control through the rotary mechanism while maintaining ease of operation through the sliding mechanism.
Solution Approach 2:
The system transitions from a fixed pneumatic cylinder to dynamic, independently controllable drive means. The sliding drive means allows the arms to move along the barrel, while the rotary drive means enables precise adjustment of arm position and pressure application, with both mechanisms being adjustable rather than fixed.
2Adaptability or versatility
If the guide means shape is changed to adjust arm trajectory, then the trajectory can be modified, but the device complexity increases and flexibility to produce different tire types is reduced
Solution Approach 1:
Instead of modifying the fixed guide means shape for different trajectories, the system uses a dynamic rotary drive means that can adjust arm position through rotation. This allows multiple trajectories to be achieved through control adjustments rather than physical modifications, reducing device complexity while maintaining adaptability.
Solution Approach 2:
The system changes control parameters (rotation angle, sliding position) rather than physical parameters (guide means shape). By varying the rotational position of the arms through the rotary drive means, different trajectories are achieved without modifying the guide means structure, thus avoiding increased device complexity.
3Productivity
If the drive means are fixed to the barrel, then the arms can be driven, but the barrel cannot rotate freely as cables would hinder rotation and may break
Solution Approach 1:
The drive means are extracted from the barrel structure and positioned externally. The sliding drive means and rotary drive means are mounted on the frame rather than fixed to the rotating barrel, eliminating the cable interference problem. This allows the barrel to rotate freely for blank orientation while maintaining full drive functionality through external actuation.
4Measurement precision
If the support slides relative to the barrel to control arm rotation, then the arms can be positioned, but the pressure control on the rubber layer remains imprecise
Solution Approach 1:
The positioning and pressure control functions are segmented into separate mechanisms. The sliding support handles positional movement, while the independently controlled rotary drive means handles precise pressure application. This separation allows each function to be optimized independently, with the rotary mechanism providing precise pressure control regardless of the sliding support's position.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
This folding-up system for green tyres (2) comprises: - a base for receiving a green tyre (3), - folding-up arms (20) connected to the base, - sliding drive means (36), external to the base, capable of sliding the arms (20) relative to the base (6), and - rotational drive means (38), external to the base (6), capable of rotating the arms (20) relative to the base (6) independently from the sliding of the arms (20).