Dual-Roll Paper Dispenser with Automatic Roll Switching
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Solution Overview
Problem
Existing dispensers for absorbent paper rolls in public environments face challenges in efficiently switching to a second roll during use and in convenient reloading, often requiring manual adjustments and space optimization.
Innovation Solution
A dispenser with a mandrel member and housing that allows two roll supports to move between extended and collapsed conditions, enabling efficient space use, automatic roll switching, and convenient reloading without removing the mandrel, by adjusting the distance between roll supports and utilizing gravity for transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mandrel member is removed for reloading, then the reloading process becomes simpler, but the device complexity increases and operation time increases
Solution Approach 1:
The system performs automatic roll replacement without human intervention. The mandrel member with roll supports automatically transitions between extended and collapsed states, and the housing mechanisms automatically transfer rolls from storage to dispensing positions, eliminating the need for manual mandrel removal and installation
Solution Approach 2:
The mandrel member is designed to be dynamically transformable between extended and collapsed conditions. This dynamic structure allows the roll supports to move relative to each other, enabling automatic roll transfer mechanisms to function while maintaining a compact form when collapsed, thus facilitating quick reloading without manual intervention
2Volume of moving object
If the distance between roll supports is reduced for compact storage, then the space utilization improves, but the automatic roll switching mechanism becomes more complex
Solution Approach 1:
The mandrel member transforms between extended and collapsed states to accommodate both compact storage and automatic roll switching requirements. When collapsed, the roll supports are close together for compact volume. When extended, sufficient distance is created for the automatic transfer mechanisms to operate, thus resolving the contradiction between compactness and mechanism complexity
Solution Approach 2:
The roll supports are arranged to nest or overlap when the mandrel is collapsed, minimizing the overall volume. The housing structures are also nested or integrated into the mandrel member, allowing the entire system to maintain a compact form factor while still accommodating the automatic switching mechanisms when extended
3Productivity
If automatic roll transfer is implemented, then the productivity improves, but the device complexity increases
Solution Approach 1:
The automatic roll transfer mechanism operates autonomously using the mandrel's positional changes. When the mandrel extends or collapses, the housing mechanisms automatically engage and transfer rolls between storage and dispensing positions without requiring separate control systems or complex actuation mechanisms, thus achieving high productivity with relatively simple mechanisms
Solution Approach 2:
Rolls are pre-positioned in the storage positions on the mandrel member before the automatic transfer is needed. The housing mechanisms are pre-configured to automatically engage and transfer these pre-positioned rolls when the mandrel changes state, enabling rapid roll replacement without complex real-time control systems
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 dispenser allows for efficient use of space, automatic roll switching, and easy reloading, ensuring continuous operation with minimal manual intervention and optimized space utilization.
Implementation Method 1
by adjusting the distance between roll supports and utilizing gravity for transitions
Data Source
AI summary
A dispenser including two roll supports; and a housing, the dispenser configured such that the roll supports can assume the following positions relative to the housing: at least one dispensing position for a roll support of the two roll supports, and a storage position for a roll support of the two roll supports, the dispenser configured for allowing dispensing from a roll arranged on a roll support of the two roll supports which is in the dispensing position and for storage of a roll arranged on a roll support of the two roll supports which is in the storage position; the dispenser configured to provide a first state, wherein a first roll support of the roll supports is in the dispensing position and a second roll support of the roll supports is in the storage position, and a second state, wherein the second roll support is in a dispensing position.