Medium Discharge Guide with Elastic Buckle Prevention
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Solution Overview
Problem
Existing medium discharge devices face issues with media buckling and jamming due to variations in resilience, particularly with media having low rigidity, leading to improper stacking and order reversal.
Innovation Solution
A medium discharge device equipped with a discharge roller pair and a guide member that is elastically displaceable to guide media onto a receiving tray at a predetermined angle, using a leaf spring or wire to adjust to the load, ensuring proper stacking and preventing buckling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed guide structure is used to discharge medium at a predetermined angle, then high rigidity medium can be discharged properly, but low rigidity medium buckles and lands at incorrect positions
Solution Approach 1:
The guide member is designed to be elastically displaceable rather than fixed, allowing it to dynamically adjust its position and the discharge angle based on the resilience characteristics of different media. This dynamic adjustment enables reliable discharge for both high rigidity media (maintaining predetermined angle) and low rigidity media (allowing angle adaptation to prevent buckling).
Solution Approach 2:
The guide member's physical state changes from a fixed rigid structure to an elastically displaceable structure, allowing the discharge angle parameter to vary according to medium properties. This parameter change enables the system to adapt to different medium resilience values while maintaining reliable discharge functionality.
2Manufacturing precision
If the guide member is made rigid to maintain stable discharge angle, then discharge precision is improved, but the guide member cannot adapt to varying medium loads
Solution Approach 1:
The guide member transitions from a static rigid component to a dynamic elastically displaceable component, allowing it to maintain precise discharge angles for rigid media while adapting its angle for flexible media under varying loads, thus achieving both precision and adaptability.
Solution Approach 2:
The guide member is designed with flexible elastic properties similar to flexible structures, enabling it to deform elastically under different medium loads while maintaining functional performance across varying conditions.
3Adaptability or versatility
If multiple guide members are added to support different medium types, then adaptability is improved, but device complexity increases
Solution Approach 1:
The single elastically displaceable guide member serves multiple functions by adapting to different medium resilience types through elastic deformation, replacing the need for multiple specialized guide members and thereby reducing overall device complexity while maintaining high adaptability.
Solution Approach 2:
Instead of adding multiple fixed guide members for different medium types, the system uses parameter changes in a single guide member (elastic displacement and angle variation) to achieve universal compatibility with different medium resilience characteristics.
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 guides media of varying resilience onto the tray at a stable angle, reducing buckling and jamming, and maintaining orderly stacking, even with high volumes of media discharge.
Implementation Method 1
the guide member is provided elastically displaceable in an advancing and retreating direction with respect to the medium mounting surface of the medium receiving tray and displaced in a direction coming close to the medium mounting surface according to raising of a pressing load due to the medium that is discharged to the medium receiving tray
Data Source
AI summary
A medium discharge device includes a discharge roller pair that is provided with a discharge driving roller and a discharge driven roller which drivably rotates in contact with the discharge driving roller, and a medium receiving tray which receives the medium that is fed and discharged by the discharge roller pair, in which the medium receiving tray includes a guide member which guides such that a tip end of the medium which is discharged from the discharge roller pair enters the medium mounting surface at a predetermined angle, and the guide member is provided to be elastically displaceable in an advancing and retreating direction with respect to the medium mounting surface of the medium receiving tray and is displaced in a direction coming close to the medium mounting surface according to raising of a pressing load due to the medium that is discharged to the medium receiving tray.