Paper Conveying Roller Interlock for Anti-Slip Attachment
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Solution Overview
Problem
Existing paper sheet conveying rollers with enlarged contact areas between the inner peripheral edge and annular groove suffer from insufficient prevention of sliding rotation, and bonding these components with adhesives makes it difficult to remove the roller body from the support body.
Innovation Solution
A paper sheet conveying roller design featuring first and second annular grooves on the support body with protrusions or recesses on the inner peripheral edges of the side walls, which fit into corresponding recesses or protrusions in the grooves, preventing sliding rotation without the need for adhesives and allowing easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the contact area between the inner peripheral edge and annular groove is enlarged to prevent sliding rotation, then the reliability of preventing sliding rotation is improved, but the ease of operation for removing the roller body deteriorates
Solution Approach 1:
The connection between the roller body and support body is segmented into multiple independent engagement points (protrusions and recesses) distributed around the circumference. This segmentation allows the roller body to be securely held against sliding rotation through multiple contact points while still permitting easy removal by applying force to detach the entire assembly without requiring adhesive bonding.
Solution Approach 2:
The protrusions and recesses are strategically positioned at specific locations on the inner peripheral edge and annular groove to provide localized engagement points. This local quality approach ensures that sliding rotation is prevented at critical positions while maintaining overall ease of operation, as the localized features do not create excessive friction or bonding across the entire contact area.
2Reliability
If adhesive bonding is used to prevent sliding rotation, then the reliability of preventing sliding rotation is improved, but the device complexity increases due to additional bonding processes
Solution Approach 1:
The protrusions and recesses are designed to automatically engage with each other when the roller body is mounted on the support body, creating a self-locking mechanism that prevents sliding rotation without requiring external adhesive bonding processes. This self-service feature simplifies the attachment process while maintaining reliable prevention of sliding rotation.
Solution Approach 2:
The mechanical engagement system using protrusions and recesses replaces the chemical bonding system using adhesives. This substitution eliminates the need for complex bonding processes, curing times, and associated equipment, thereby reducing device complexity while achieving the same functional outcome of preventing sliding rotation through purely mechanical means.
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
Effectively prevents sliding rotation of the roller body while allowing for stable attachment and easy removal, enhancing the reliability and maintenance of the paper sheet conveying process.
Implementation Method 1
a protrusion or a recess is arranged at a circumferential section of an inner peripheral edge of one or both of the first and second side walls, and a recess or a protrusion fitted to the protrusion or recess is configured at one or both of the first and second annular grooves
Data Source
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AI summary
A paper sheet conveying roller is constructed with a roller body (20) attached to an outer peripheral side of a support body (12). The roller body (20) is provided with a tubular section (21), which is arranged to form a cavity (19) between the support body (12) and the tubular section (21), and ring-shaped side walls (22, 22) that are interconnected, respectively, with both ends of the tubular section (21) in the axial direction thereof. Two annular grooves (13, 13) and first and second branched grooves (14A, 14B) branched out from the respective annular grooves (13, 13) are formed on the outer peripheral surface of the support body (12). Inner peripheral edges (25, 25) of the side walls (22, 22) are fitted in the annular grooves (13, 13). The inner peripheral edges (25, 25) are provided with first and second protrusions (26A, 26B) that protrude bilaterally in the axial direction. The protrusions (26A, 26B) are fitted in the branched grooves (14A, 14B).