Magnetic Card Press Roller for Shuffling Machine Delivery
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Solution Overview
Problem
Conventional shuffling machines experience idling issues when the number of playing cards decreases, leading to reduced friction and failure in delivering cards smoothly, resulting in high failure rates and reduced fairness in gameplay.
Innovation Solution
Incorporating a magnetic roller and magnetic member in the card press roller assembly, where the magnetic member attracts the magnetic roller to increase friction and ensure smooth delivery, even when the number of cards is low, by using materials like iron, nickel, or cobalt, and a magnet to assist the press arm in maintaining adequate pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a return spring is used to press the card press roller against the playing cards, then the structure is simple and easy to manufacture, but the press force decreases as the number of cards decreases, leading to idling and delivery failure
Solution Approach 1:
The patent replaces the purely mechanical return spring system with a magnetic field-based pressing mechanism. The magnetic member generates magnetic force to press the card press roller against the playing cards, substituting the mechanical elastic force system with a magnetic field system that can maintain consistent pressing force regardless of card thickness or number.
Solution Approach 2:
The patent changes the physical parameter of the pressing force from being variable (dependent on card thickness and spring compression) to being stable and controllable through magnetic field strength. The magnetic force can be adjusted by changing the magnetic member's properties or position, ensuring consistent pressing force across different card quantities.
2Device complexity
If the card press roller relies on elastic force from the return spring, then the device complexity is low, but the friction between cards and roller assembly is insufficient when card quantity is low, causing idling
Solution Approach 1:
The patent substitutes the mechanical elastic force generation system with a magnetic field-based force generation system. The magnetic member creates a magnetic field that exerts force on the card press roller, replacing the need for complex spring mechanisms and eliminating the problem of insufficient friction when card quantity is low.
Solution Approach 2:
The magnetic field acts as an intermediary between the magnetic member and the card press roller, transmitting force without direct mechanical contact or reliance on elastic deformation. This intermediary magnetic field ensures consistent pressing force and adequate friction regardless of the number of cards in the stack.
3Reliability
If a magnetic member and magnetic roller are added to increase press force, then delivery reliability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces a complex mechanical force multiplication system with a simpler magnetic field-based system. Instead of using multiple springs, levers, or adjustable mechanisms to increase press force, the magnetic member directly generates the required force through its magnetic field, simplifying the overall device structure while improving reliability.
Solution Approach 2:
The patent changes the method of force generation from mechanical (springs, levers) to magnetic, allowing for precise control of pressing force through magnetic field parameters. This enables reliable card delivery with a simpler device configuration, as magnetic force can be easily adjusted by changing the magnetic member's strength or position without adding mechanical complexity.
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 magnetic attraction enhances friction between the cards and the roller assembly, preventing idling and ensuring reliable delivery of cards, thereby reducing the shuffling machine's failure rate and maintaining gameplay fairness.
Implementation Method 1
the magnetic member can attract the magnetic roller to increase the press force against a small number of playing cards, increasing friction to ensure smooth delivery without idling
Data Source
AI summary
A shuffling machine having an auxiliary card press structure is disclosed. The shuffling machine includes at least one card delivering roller assembly. An outer side of the card delivering roller assembly is pivotally connected with a press arm having a return spring. Another end of the press arm is provided with a card press roller assembly. The card press roller assembly includes at least one magnetic roller. The card delivering roller assembly is provided with at least one magnetic member corresponding to the magnetic roller. When a left accommodating compartment or a right accommodating compartment of the shuffling machine has few playing cards, the magnetic member can attract the magnetic roller to increase the force of the card press roller assembly against the playing cards to increase friction to ensure smooth delivery without idling.