Sheet Conveying Apparatus Vibration Damping Mechanism
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Solution Overview
Problem
The existing sheet conveying apparatuses experience noise issues due to the stick-slip phenomenon and vibration of the arm member and drive shaft, which generates abnormal sounds and noise, particularly when the separation roller separates sheets.
Innovation Solution
A sheet conveying apparatus is designed with a rotary portion supported by a rotatable support portion, a support shaft, an urging portion to center the support shaft, and a regulating portion to manage the support portion's position, reducing vibration and noise by stabilizing the support portion's movement around the shaft center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the arm member supports the separation roller shaft in a swingable manner to allow sheet separation, then the sheet conveying function is achieved, but the arm member and drive shaft vibrate to generate noise
Solution Approach 1:
A damping member is introduced as an intermediary between the arm member and the separation roller shaft. This damping member absorbs vibrations and prevents them from being transmitted to the arm member and drive shaft, thereby reducing noise while preserving the sheet separation function. The damping member acts as a mediator that isolates the vibration source from the noise-generating components.
2Productivity
If the separation roller rotates in reverse direction to separate sheets, then sheet separation is achieved, but the stick-slip phenomenon occurs causing vibration and noise
Solution Approach 1:
The damping member serves as an intermediary that absorbs the vibrations generated by the stick-slip phenomenon during sheet separation. By placing the damping member at the vibration source (on the separation roller shaft), it prevents these vibrations from propagating to the arm member and drive shaft, thereby eliminating noise while maintaining effective sheet separation.
Solution Approach 2:
The damping member converts the harmful vibrations from the stick-slip phenomenon into beneficial damping energy. Instead of allowing the vibrations to propagate and create noise, the damping member dissipates this energy through material damping, transforming the harmful effect into a controlled energy dissipation process that protects the overall mechanism from noise generation.
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 configuration effectively suppresses noise generation by minimizing vibration of the support portion, thereby reducing the likelihood of stick-slip phenomena and associated noise in the sheet conveying mechanism.
Implementation Method 1
an urging portion configured to urge the support portion in a direction of a rotary shaft center about which the support portion rotates
Implementation Method 2
vibration of the support portion in the direction of the shaft center can be reduced, thereby suppressing generation of noise
Data Source
AI summary
A sheet conveying apparatus configured to convey a sheet includes: a rotatable support portion configured to support a rotary portion which is configured to convey a sheet; an urging portion configured to urge the support portion in a direction of a rotary shaft center of the support portion with a support shaft, which is configured to support the support portion in a rotatable manner and is inserted through the urging portion; and a regulating portion configured to regulate a position of the support portion urged by the urging portion.