Shielding Element Placement on Data Carrier
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Solution Overview
Problem
Existing smart card manufacturing processes face challenges in accurately and easily positioning magnetic shielding layers due to the need for precise alignment, which can lead to interference issues in contactless payment systems, especially in metallic environments.
Innovation Solution
A method involving a placement actuator and transport layer system that securely positions a shielding element or module on a data carrier by advancing the transport layer, securing the element with the actuator, retracting it, and then displacing the actuator to place the element accurately, allowing for improved alignment and reduced risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pick and place method is used to position shielding material, then shielding can be applied, but accurate alignment is difficult to achieve and positioning precision deteriorates
Solution Approach 1:
A transport layer acts as an intermediary carrier that holds the shielding element in a known position. The placement actuator references this transport layer to achieve accurate positioning of the shielding element on the data carrier, eliminating the need for direct alignment between components.
Solution Approach 2:
The manual or semi-automatic pick and place alignment process is replaced with an automated placement actuator system that uses the transport layer as a reference. This mechanical substitution enables precise positioning through controlled movement rather than manual alignment.
2Reliability
If accurate alignment is required for shielding layer, then shielding effectiveness is improved, but manufacturing complexity and difficulty increase
Solution Approach 1:
The transport layer serves as a mediator that simplifies the manufacturing process by pre-positioning the shielding element. This eliminates the need for complex alignment procedures during assembly, reducing manufacturing complexity while maintaining shielding effectiveness.
Solution Approach 2:
The shielding element is pre-positioned on the transport layer before the actual assembly process. This preliminary positioning action ensures accurate alignment is achieved automatically during placement, eliminating the need for complex real-time alignment procedures.
3Reliability
If shielding material is positioned with little or no tolerances, then shielding effectiveness is improved, but ease of manufacture deteriorates
Solution Approach 1:
The transport layer acts as a mediator that absorbs positioning tolerances. By referencing the transport layer's known position rather than requiring direct tolerance control between the shielding element and data carrier, the manufacturing process becomes much easier while maintaining tight effective tolerances.
4Manufacturing precision
If transport layer is used to carry element, then positioning accuracy is improved, but risk of element damage increases
Solution Approach 1:
The placement actuator is designed to secure the element on the transport layer in a known position before the actual placement operation. This pre-securing action prevents the element from shifting or becoming damaged during transport and handling, cushioning against potential damage while maintaining positioning accuracy.
Data Source
AI summary
A method of placing an element onto a data carrier, where there is a placement actuator arranged to be able to secure the element. A transport layer is advanced until the element is located between the placement actuator and the data carrier in a desired position. The actuator is moved towards the data carrier so that it secures the element. The transport layer is then retracted to detach the element from it and then the placement element is moved towards the data carrier to bring the element into contact with the data carrier at the desired position.