Vacuum Steering Roller for High-Speed Flexible Material Conveying
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Solution Overview
Problem
Existing conveyor systems struggle to effectively steer lightweight, flexible materials due to insufficient frictional grip and entraining force, especially at higher conveying speeds, leading to issues with inertia and aerodynamic effects.
Innovation Solution
A drivable roller with vacuum openings and a flexible force transfer element that generates a retaining force on the material, combined with a pivoting mechanism, to ensure effective steering of flexible and rigid materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional driven rollers are used to steer lightweight flexible materials, then the conveying speed can be increased, but the frictional grip and entraining force become insufficient due to low contact pressure
Solution Approach 1:
The patent applies pneumatic pressure through a pressure-generating device that directs compressed air onto the conveyed material at the roller surface. This increases the contact pressure between the material and roller, thereby enhancing frictional grip and entraining force without increasing roller diameter or weight. The pneumatic pressure acts locally at the contact zone to overcome the insufficient friction caused by lightweight flexible materials.
2Device complexity
If conventional driven rollers are used for lightweight flexible materials, then the system remains simple, but the frictional grip is insufficient due to material properties
Solution Approach 1:
The patent introduces a pneumatic pressure system that can be integrated into existing roller structures. The pressure-generating device connects to the roller through conduits that deliver compressed air to the roller surface. This adds minimal complexity while significantly improving frictional grip by increasing contact pressure between the roller and lightweight flexible materials.
Solution Approach 2:
The patent changes the physical parameter of contact pressure by introducing pneumatic pressure. Instead of changing the roller's mechanical properties (size, weight, material), the system dynamically adjusts the contact pressure parameter through compressed air delivery, thereby improving frictional grip without fundamentally altering the roller design.
3Force
If contact pressure is increased to improve entraining force, then frictional grip improves, but the device complexity increases
Solution Approach 1:
The patent uses pneumatic pressure as a compact and efficient method to increase contact pressure. The pressure-generating device and conduit system are relatively simple compared to mechanical alternatives that would require larger rollers, heavier construction, or complex mechanical pressure application mechanisms. The pneumatic system provides precise control over contact pressure with minimal structural modifications.
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
The solution enables reliable steering of lightweight, flexible materials at high speeds by maintaining adhesion through vacuum and friction, without requiring significant modifications to existing conveyor systems.
Implementation Method 1
The roller (1) according to the invention is connected to a vacuum device and includes at least one vacuum opening (3) for generating a vacuum in the region of the cylindrical surface (2)
Implementation Method 2
Due to the contact pressure exerted by the conveyed materials on the driven rollers, an entraining force is transmitted from the rollers to the conveyed materials
Data Source
AI summary
A drivable roller having a cylindrical surface for use in a conveyor system for steering conveyed materials conveyed horizontally across the roller, and an arrangement including such a roller. The roller can be connected to a vacuum device and has at least one vacuum opening for generating a vacuum in the region of the cylindrical surface and which opens into the cylindrical surface of the roller.