Free Roller Synchronization via Fluid Flow in Roll-to-Roll Systems
Solution Overview
Problem
In the conveyance of thin glass films or sheets using a Roll To Roll system, synchronization of free rollers is challenging due to variations in rotational resistance, leading to potential slippage and damage to the workpiece.
Innovation Solution
Applying fluid flows, such as air, to the free rollers as a rotation auxiliary force to reduce rotational resistance and ensure synchronization among all rollers during conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If mechanical power transmission elements (gears and belts) are used to connect driving sources to rollers, then all rollers can be driven to rotate at the same speed, but dust emission increases
Solution Approach 1:
The patent removes mechanical power transmission elements (gears and belts) from the system, extracting the dust-generating components while preserving the functional requirement of synchronized roller rotation through an alternative fluid-based approach
Solution Approach 2:
The patent applies pneumatic pressure to the free rollers to rotate them in synchronization with the driven rollers, replacing mechanical power transmission with a fluid-based system that avoids dust emission while achieving the desired rotational synchronization
2Object-generated harmful factors
If free rollers are used to reduce dust emission, then dust emission is suppressed, but variation in rotational resistance causes slippage and workpiece damage
Solution Approach 1:
The patent applies pneumatic pressure to actively control and adjust the rotational resistance of free rollers, changing the physical parameters of the system to compensate for variations in rotational resistance and prevent slippage between rollers and workpiece
Solution Approach 2:
The system uses feedback control where pneumatic pressure is applied to free rollers based on their rotational resistance characteristics, allowing real-time adjustment to maintain synchronized rotation and prevent workpiece damage
3Object-generated harmful factors
If all rollers are made into free rollers to minimize dust emission, then dust emission is minimized, but synchronization of roller rotation becomes difficult to achieve
Solution Approach 1:
The patent segments the roller system into two functional groups: driven rollers that receive power and free rollers that rotate without direct mechanical connection, allowing each segment to fulfill its specific role while working together to achieve synchronized rotation without dust-generating mechanical linkages
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 method allows for synchronized rotation of all free rollers, preventing slippage and damage to the workpiece, while maintaining a stable and efficient conveyance process.
Implementation Method 1
applying flows of a fluid to the free rollers to apply a rotation auxiliary force to the rollers in a rotation direction of the free rollers
Data Source
AI summary
Provided is a workpiece conveyance method for conveying a workpiece (1) in a predetermined direction by applying a conveying force (F) to the workpiece (1) while supporting the workpiece (1) through use of free rollers (11), and the workpiece conveyance method includes: applying flows of a fluid to the free rollers (11) to apply a rotation auxiliary force (f) to the free rollers (11) in a rotation direction of the free rollers (11) during conveyance of the workpiece (1).