Card Feed Slope and Barrier Mechanism for Jam-Free Shuffling
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Solution Overview
Problem
Existing playing card shufflers face challenges in consistently feeding a single card into the system, ensuring the last card in a set is moved out, and preventing premature activation as cards are inserted, particularly when dealing with a single deck or set of cards.
Innovation Solution
A gravity feed system with a critical slope angle and extendable/retractable barriers is implemented to assist in moving cards into the shuffler, utilizing pick-off rollers and sensors to control card movement and prevent jamming, ensuring cards are fed one at a time and accurately counted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gravity feed system with critical slope angle is used to move cards into the shuffler, then card feeding reliability is improved, but device complexity increases due to additional barriers and sensor control mechanisms
Solution Approach 1:
The gravity feed system introduces an intermediary inclined surface with critical slope angle between the card input and the shuffler mechanism. This intermediary structure uses gravity as a mediator to naturally guide cards into the shuffler, improving feeding reliability without requiring complex active control mechanisms for each card movement
Solution Approach 2:
The system employs sensors that detect card presence and automatically control the barriers to prevent premature activation. The barriers self-adjust based on sensor feedback, allowing the system to regulate its own operation and ensure cards are fed one at a time without requiring external intervention or complex manual control
2Measurement precision
If extendable/retractable barriers with sensor control are implemented to prevent premature activation, then card counting accuracy is improved, but device complexity increases
Solution Approach 1:
Sensors are integrated into the system to detect card presence and provide feedback to the control mechanism. This feedback loop enables accurate card counting by triggering barrier extension or retraction based on real-time card detection, ensuring precise measurement of card numbers while maintaining automated control
Solution Approach 2:
The barrier system operates autonomously based on sensor detection. When sensors detect card presence, the barriers automatically extend to prevent premature activation and retract when appropriate, allowing the system to self-regulate card feeding and counting operations without requiring complex external control mechanisms
3Manufacturing precision
If pick-off rollers are used to move cards one at a time, then card feeding precision is improved, but device complexity increases due to additional mechanical components
Solution Approach 1:
Pick-off rollers serve as an intermediary mechanical element between the gravity feed system and the shuffler. These rollers precisely pick up individual cards from the inclined surface and transfer them to the shuffler, ensuring accurate one-at-a-time card feeding while distributing the mechanical complexity across specialized components rather than the entire system
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 gravity feed system effectively moves cards into the shuffler, prevents premature activation, and ensures accurate counting of cards, enhancing the efficiency and reliability of the card shuffling process.
Implementation Method 1
A gravity feed system with a critical slope angle and extendable/retractable barriers is implemented to assist in moving cards into the shuffler
Implementation Method 2
utilizing pick-off rollers and sensors to control card movement
Data Source
AI summary
A card feed system for feeding cards into a card handling system. The card feed system includes a card input compartment with a playing card support surface, a front wall, a rear wall and two side walls. The playing card support surface slopes toward the front wall at an angle between 12 degrees and 22 degrees. A slot is provided in the front wall to allow single cards to pass into the card handling system. The card feed system also includes a card moving system to advance cards through the slot.