Drift Roller Trajectory Control for Continuous Strip Cutting
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Solution Overview
Problem
In the high-speed manufacturing of continuous strip-like elements for building tires, occasional lateral movements of the continuous band cause trajectory deviations, leading to potential breakage and interruptions in the manufacturing cycle, necessitating accurate control of these movements to enhance productivity and product quality.
Innovation Solution
The process involves modulating drift forces using structurally simple and reliable components to correct the trajectories of continuous strip-like elements as they exit the cutting unit, allowing for continuous operation without stopping or slowing down the production line, and ensuring precise cutting by adjusting the relative positioning between the knives and the band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the production line operates at high speed, then productivity is improved, but trajectory deviations and breakage risk increase
Solution Approach 1:
The patent employs drift rollers equipped with sensors that continuously monitor the position of continuous strip-like elements and provide feedback signals. This feedback mechanism enables real-time detection of trajectory deviations and automatic adjustment of drift forces, ensuring stable trajectory control even at high production speeds.
Solution Approach 2:
The drift rollers are designed with adjustable drift forces that can be dynamically modified based on detected trajectory deviations. This dynamic adjustment capability allows the system to adapt to varying production conditions and maintain reliable trajectory control while operating at high speeds.
2Manufacturing precision
If drift forces are increased to correct trajectory deviations, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system automatically detects trajectory deviations and adjusts drift forces without requiring external intervention. The drift rollers self-regulate their positioning and drift force application based on real-time feedback, simplifying the overall control architecture while maintaining high manufacturing precision.
Solution Approach 2:
The drift rollers act as intermediary elements between the cutting unit and collection stations, providing a simple mechanical means to correct trajectory deviations through controlled drift forces. This intermediary approach avoids the need for complex active control systems while achieving the desired precision.
3Productivity
If trajectory corrections are made in real-time, then productivity is maintained, but measurement and control difficulty increases
Solution Approach 1:
Sensors mounted on or near the drift rollers continuously monitor the position of continuous strip-like elements and provide real-time feedback signals. This feedback enables automatic trajectory correction without interrupting production, maintaining productivity while managing measurement complexity through automated control.
Solution Approach 2:
The patent replaces complex mechanical trajectory control mechanisms with a sensor-based detection and control system. This substitution simplifies the measurement and control processes by using electronic sensing and signal processing rather than complex mechanical linkages and adjustments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach increases productivity and quality by quickly correcting deviations without interrupting the production process, facilitating precise cutting and restoring correct cutting execution, even in case of malfunctions, using inexpensive and highly reliable equipment.
Implementation Method 1
drift rollers (29) which are adapted to operate in contact relationship with one of said n continuous strip-like elements (2) for generating drift forces
Data Source
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AI summary
A continuous band (6) of elastomeric material comprising reinforcing cords (3), fed through an extrusion die (10), is cut for generating continuous strip-like elements (2) . In the region of generation ("Z") of the continuous strip-like elements (2), guiding devices apply drift forces to each of the continuous strip-like elements (2) to guide them along diverging trajectories. The drift forces are modulated by drive members (33) placed externally of said generation region ("Z") of continuous strip-like elements (2). Each continuous strip-like element (2) is collected on a respective reel (17) .