Swing Controller Friction Damping for Separation Roller Stability
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Solution Overview
Problem
Existing media conveying apparatuses face challenges in preventing multiple feeding of media due to vibrations and misalignment of the separation roller, leading to inefficiencies and errors in media handling.
Innovation Solution
A swing controller is introduced, featuring a swing member with a torsion coil spring and a rotation support shaft positioned differently from the swing shaft, which generates a friction force to stabilize the swing member and reduce vibrations, ensuring precise control over the separation roller's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the separation roller is made swingable to handle media of various thicknesses, then adaptability is improved, but vibrations and misalignment occur leading to multiple feeding
Solution Approach 1:
A dashpot device is introduced as an intermediary between the swing member and the fixed support. This dashpot provides controlled damping force that suppresses vibrations of the swing member during media feeding, while still allowing the swing member to adjust to different media thicknesses. The damping force acts as a mediator that stabilizes the system without completely restricting the swing motion needed for adaptability.
2Stability of the object's composition
If a coil spring is used to bias the arm member, then the swing member can return to initial position, but vibrations persist causing misalignment
Solution Approach 1:
The patent changes the parameter of the elastic member from a simple coil spring to a dashpot device with controllable damping characteristics. By adjusting the damping coefficient of the dashpot, the system can control the decay of vibrations while maintaining the ability to return to the initial position. This parameter change transforms the oscillatory motion into a critically damped or overdamped response that eliminates vibrations.
3Productivity
If the separation roller presses multiple media, then feeding capability is improved, but multiple feeding errors occur due to vibrations
Solution Approach 1:
The dashpot acts as a mediator that isolates the detection arm from vibrations caused by the separation roller pressing multiple media. By providing viscous damping, the dashpot filters out high-frequency vibrations that would otherwise be transmitted to the detection arm, allowing accurate detection of media presence even during active feeding operations.
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 effectively reduces the occurrence of multiple feeding by stabilizing the separation roller, enhancing media handling efficiency and accuracy, and preventing erroneous determinations of media presence.
Implementation Method 1
a reaction force in a direction opposite to the predetermined direction is applied to the swing member by a friction force between the contact portion and the second arm
Data Source
AI summary
A swing controller includes a swing member including a swing shaft on which the swing member swings and a contact portion, and a torsion coil spring. The torsion coil spring includes a rotation support shaft on which the torsion coil spring rotates, a fixed first arm, and a second arm on which the contact portion slides. The rotation support shaft is at a position different from a position of the swing shaft. When the swing member swings in a predetermined direction, a reaction force in a direction opposite to the predetermined direction is applied to the swing member by a friction force between the contact portion and the second arm.