Card Stacking Mechanism with Cam-Driven Friction Alignment
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Solution Overview
Problem
Existing systems for stacking plastic cards often result in jamming issues due to inadequate positioning, causing the inlet mouth of the stacking device to become blocked, which hampers the operation of card handling devices like printers and magnetic encoding devices.
Innovation Solution
A system comprising a compartment with an inlet mouth, a stacking element with dragging and lifting mechanisms, and friction means to align and stack plastic cards, ensuring optimal positioning and preventing jamming by using rollers and pulleys driven by a cam mechanism and friction forces to guide cards into a compartment for secure stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple card stacking system is used, then device complexity is reduced, but card positioning precision deteriorates causing jamming
Solution Approach 1:
The card handling system is divided into separate functional modules: a card supply unit with rollers for feeding cards, a lifting mechanism with cam-operated levers for vertical movement, and a stacking compartment. This segmentation allows each module to perform its specific function with simple, reliable components rather than one complex integrated system.
Solution Approach 2:
The system performs preliminary alignment and positioning actions before the card is fully stacked. The lifting mechanism raises the card to a predetermined height, and the friction means prepare the card position in advance, ensuring proper alignment before the stacking operation is completed.
2Manufacturing precision
If friction means are used to handle dragging means, then card alignment improves, but energy loss increases
Solution Approach 1:
The cam mechanism operates periodically, converting rotational motion into intermittent lifting and positioning actions. The cam profile is designed to provide lifting force only when needed, reducing continuous friction engagement. The friction means are activated periodically during the card feeding and positioning cycle rather than continuously.
3Manufacturing precision
If rollers and pulleys are used for card handling, then card positioning accuracy improves, but device complexity increases
Solution Approach 1:
The rollers serve multiple functions: they guide card movement, provide friction for feeding, and support card positioning. The lifting levers with cam operation simultaneously control vertical movement and engage friction means for alignment. This multi-functionality reduces the need for separate dedicated components for each function.
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 system effectively prevents card jamming by ensuring proper alignment and stacking of plastic cards, maintaining the operational integrity of card handling devices by avoiding blockages at the inlet mouth.
Implementation Method 1
friction means (15) configured for handling the dragging means (4) of the stacking element (3) and taking them to a position suitable for stacking the card (22)
Data Source
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AI summary
A system (10) for aligning and stacking plastic cards for card handling devices comprising a compartment (1) to contain stacked cards (22), comprising an inlet mouth (2) of the card (22), a stacking element (3) of the cards which receives a card (22) to be stacked from external supply means, and comprises dragging means (4) of the card (22) configured for dragging the card (22) on the stacking element (3), lifting means (5) connected to the stacking element (3), actuated by actuating means (6) and configured for determining the lifting of the stacking element (3) of the cards, friction means (15) configured for handling the dragging means (4) of the stacking element (3) and taking them to the position suitable for stacking the card (22) inside the compartment (1); a plastic card treating device connectable to the system (10) is further described.