Resilient Coin Sorting Pad with Nitrile and Mesh Layers
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Solution Overview
Problem
Existing coin sorting devices face issues with wear and tear due to friction, leading to inefficiencies and increased maintenance needs, particularly in self-service applications where debris can cause damage to the sorting pad.
Innovation Solution
A resilient coin sorting pad designed with a lower foam layer, an upper skin layer comprising nitrile rubber, and a layer of mesh material, such as Kevlar or nylon, to enhance durability and prevent damage from debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a traditional resilient pad is used in coin sorters, then the device is simple and easy to manufacture, but the pad becomes worn due to friction between the stationary sorting head and moving coins, leading to reduced service life and increased maintenance needs
Solution Approach 1:
The patent applies composite materials by combining multiple layers with different properties: a foam layer for resilience and comfort, a fabric layer for structural integrity and wear resistance, and a skin layer for surface durability. This multi-layer composite structure resolves the contradiction by enhancing the service life of the sorting pad through material superiority while maintaining manufacturing simplicity through layered construction techniques.
2Reliability
If a traditional single-layer resilient pad is used, then the manufacturing process is simple, but the pad is susceptible to damage from debris in self-service applications, requiring frequent replacement
Solution Approach 1:
The multi-layer composite structure with foam, fabric, and skin layers provides enhanced debris resistance while maintaining ease of manufacture. Each layer contributes specific protective properties: the fabric layer prevents punctures and the skin layer resists surface damage, collectively improving reliability without significantly complicating the manufacturing process.
Solution Approach 2:
The foam layer serves as a cushioning element that absorbs impacts and prevents debris from reaching and damaging the fabric and skin layers. This beforehand cushioning protects the critical surface layers from debris damage while maintaining the overall simplicity of the pad construction.
3Duration of action of stationary object
If the sorting pad is made more durable to resist friction and debris, then service life increases, but the pad becomes more complex in structure and material composition
Solution Approach 1:
The patent resolves this contradiction by using composite materials that provide enhanced durability through the synergistic combination of foam, fabric, and skin layers. Each layer is optimized for specific functions, and their combination achieves superior service life while the modular layered structure keeps the overall design manageable and not excessively complex.
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 improved pad design significantly increases the service life of the coin sorting system, reduces downtime, and allows for easier replacement by untrained users, thereby minimizing maintenance costs and ensuring continuous operation.
Implementation Method 1
a resilient pad (disposed on a rotating disc) that rotates beneath a stationary sorting head... The rotating, resilient pad presses coins upward against the sorting head as the pad rotates
Implementation Method 2
portions of the sorting head and/or pad become worn due to friction between the stationary sorting head and the moving coins
Data Source
AI summary
A resilient coin sorting pad for imparting motion to a plurality of coins is provided, the resilient coin sorting pad designed to be coupled to a rotatable disc of a coin sorter, the resilient coin sorting pad being generally circular and having an outer periphery edge. The resilient coin sorting pad comprises a lower foam layer having a top surface, an upper skin layer coupled to the top surface of the foam layer, and a layer of mesh material. According to some embodiments, the upper skin layer comprises at least one layer of nitrile rubber and the layer of mesh material is nylon fiber mesh. According to some embodiments, the upper skin layer comprises at least two layers of nitrile rubber and the layer of mesh material is positioned between the at least two layers of nitrile rubber.