Green Tyre Handling Device Attitude Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In high-automation tire production plants, the transfer device struggles to perfectly position green tires in loading baskets due to long stroke lines and high speeds, leading to tire inclination, which causes mechanical interference, handling errors, and quality issues in vulcanization and molding processes.
Innovation Solution
A method and apparatus for controlling the attitude of green tires during transfer by using a gripping device with a control unit that adjusts the downward stroke to align the tire's longitudinal axis with the loading basket's vertical axis, ensuring a controlled attitude and minimizing horizontal deviation, thereby optimizing tire positioning and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transfer device operates at high speed along a long stroke line, then productivity is improved, but the positioning precision of the green tyre deteriorates
Solution Approach 1:
The control unit calculates and determines the optimal downward stroke trajectory in advance before the transfer operation begins. By pre-computing the stroke path that minimizes horizontal deviation, the system prepares the positioning strategy beforehand, allowing high-speed operation while maintaining precision through predetermined optimal paths.
Solution Approach 2:
The system monitors the actual downward stroke execution and compares it with the optimal trajectory. The control unit uses this feedback to adjust subsequent strokes, ensuring that despite high speeds and long stroke lines, the positioning precision is maintained through continuous correction based on real-time performance data.
2Productivity
If the downward stroke is executed quickly, then productivity is improved, but the attitude control of the green tyre deteriorates
Solution Approach 1:
The control unit dynamically adjusts the downward stroke parameters based on real-time conditions. By making the stroke characteristics variable rather than fixed, the system can optimize each stroke individually to maintain attitude control even at high speeds, adapting the motion profile to minimize horizontal deviation while preserving transfer efficiency.
Solution Approach 2:
The system changes the parameters of the downward stroke (such as speed profile, acceleration, and trajectory) to optimize attitude control. By modifying these parameters dynamically during operation, the system maintains precise attitude control despite high transfer speeds, ensuring the green tyre's longitudinal axis remains aligned with the loading basket's vertical axis.
3Productivity
If the stroke line is made longer to accommodate more loading baskets, then productivity is improved, but the positioning accuracy deteriorates
Solution Approach 1:
For each loading basket along the extended stroke line, the control unit pre-calculates the optimal downward stroke parameters specific to that position. By determining the best stroke path in advance for each destination, the system maintains positioning accuracy across the entire long stroke line, allowing accommodation of more loading baskets without sacrificing precision.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method is described for handling a built green tyre (100) for subsequent process comprising at least a moulding and vulcanisation and/or treatment of the green tyre surface. The green tyre (100) is carried by a gripping device (13) with a longitudinal axis (A) thereof arranged vertically, and handled along a first horizontal axis (X) up to reaching a predetermined transfer position (27) overlying a selected loading basket (24a). The gripping device (13) performs a controlled downward stroke to obtain a controlled attitude of the green tyre in which a deviation (S) between the longitudinal axis (A) and a vertical axis of symmetry of the selected loading basket (24a) is lower than a predetermined maximum threshold value. The subsequent process(es) is/are performed while maintaining the controlled attitude.