Sheet Alignment Using Inductive Sensor Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for aligning sheets or layers in composite materials, such as in the production of electronic or smart cards, rely on accurately defined edges or printed reference marks, which can be costly, complex, and limited in flexibility.
Innovation Solution
An apparatus comprising one or more sensors arranged at known positions to detect sensor features within the sheet, along with moving means and a controller to align these features with the sensors, allowing for precise alignment without relying on edge accuracy or additional markings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If printed reference marks are used on sheets for alignment, then alignment precision can be achieved, but manufacturing cost and process complexity increase
Solution Approach 1:
The patent extracts the alignment reference function from the sheet material itself and transfers it to the handling machine. Instead of marking sheets with reference patterns, the machine uses its own built-in reference features (such as encoded patterns on the machine reference surface) to establish alignment. This removes the need for additional printing operations on sheets while maintaining alignment precision.
Solution Approach 2:
The patent introduces a machine reference surface with encoded patterns as an intermediary between the sheet and the alignment system. This reference surface acts as a mediator that the sensor detects to establish sheet position and orientation. The encoded pattern on the machine reference surface serves as the alignment reference, eliminating the need to modify the sheet itself.
2Manufacturing precision
If edges of sheets are used as reference for alignment, then alignment can be performed, but edge accuracy must be maintained which adds manufacturing constraints
Solution Approach 1:
The patent extracts the alignment reference function from the sheet edges and relocates it to the handling machine. The machine's reference surface with encoded patterns provides the alignment reference independently of sheet edge quality. This allows sheets to be manufactured with standard edge tolerances while still achieving precise alignment through machine-based reference features.
3Manufacturing precision
If reference marks are printed on sheets, then alignment precision is achieved, but production time and cost increase
Solution Approach 1:
The patent removes the time-consuming printing operation for reference marks by extracting the alignment reference function and implementing it within the handling machine. The encoded patterns on the machine reference surface are pre-configured and require no additional processing steps during sheet production, thereby maintaining alignment precision while improving production efficiency.
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
This solution enables accurate alignment of sheets to within fractions of a millimeter, improving the precision and reliability of composite material assembly processes, such as in card manufacturing, while reducing costs and complexity.
Implementation Method 1
one or more inductive sensors arranged to detect a sensor feature in the sheet
Data Source
AI summary
The present invention relates to an alignment system for sheets of material using a sensor to detect reference features in the sheets. The sensor uses components within or on the sheet to accurately position the sheet relative to the sensor and hence relative to a machine.