Automated RFID Label Rejection Mechanism
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Solution Overview
Problem
Conventional RFID label manufacturing processes fail to effectively remove defective or inoperable RFID tags before application, leading to potential damage to products or cartons when these tags are affixed and later attempt to remove them, due to the permanent adhesive used.
Innovation Solution
An automated RFID tag and label rejection mechanism integrated with an automated label applicator or printer applicator system, utilizing an imager for scanning RFID labels, a label removal component with a paddle and pressurized gas system for discarding inoperable labels, and a programmable logic controller for controlling the process, ensuring only functional RFID labels are applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID labels with permanent adhesive are applied to products, then the labels are securely attached, but defective labels cannot be removed without damaging the product or carton
Solution Approach 1:
The system performs preliminary inspection of RFID labels using an imager to identify defective labels (marked with printed squares or other indicators) before they are applied to products. The label removal component actively removes defective labels from the label roll in advance, ensuring that only functional labels are applied to cartons, thereby eliminating the risk of damage from attempting to remove defective labels later.
2Reliability
If all RFID labels are inspected and defective ones removed, then only functional labels are applied, but the system complexity and processing time increase
Solution Approach 1:
The label removal component is integrated directly into the automated label applicator system, merging the inspection and removal functions with the existing label application process. The imager and label removal component share the same conveyor system and control architecture, allowing defective labels to be removed inline without requiring separate inspection and removal equipment, thus minimizing additional system complexity.
Solution Approach 2:
The system uses the existing printed markings on defective labels (such as printed squares indicating inoperability) as natural identifiers that require no additional tagging or marking equipment. The imager simply reads these existing markings to identify defective labels, and the label removal component automatically removes them without human intervention, making the system self-sufficient.
3Productivity
If defective RFID labels are not removed before application, then the labeling process is faster, but rework and waste increase due to damaged products
Solution Approach 1:
The system performs preliminary removal of defective labels from the label roll before the labeling process begins. By proactively identifying and removing defective labels in advance using the imager and label removal component, the system ensures that only functional labels are applied to products, eliminating the need for rework and preventing product waste while maintaining continuous labeling operation.
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 identifies and removes inoperable RFID labels before application, preventing damage to products or cartons and ensuring only operational RFID labels are used, thereby reducing rework and waste.
Implementation Method 1
The label removal component may include a pressurized gas system configured for ejecting a rejected label
Implementation Method 2
RFID is the use of electromagnetic radiation or energy to stimulate a responsive device (known as an RFID 'tag' or transponder) to identify itself
Data Source
AI summary
In some embodiments, an RFID label rejecting system includes an imager for scanning an RFID label, and a label removal component for discarding an inoperable RFID label. The label removal component may include a paddle configured to receive the inoperable label as part of the removal process. The label removal component may include a retraction system configured to position the paddle in an ejection path of the label rejection system to receive a rejected label. The label removal component may include a removable liner on the paddle configured to receive the rejected label and to be discarded with the rejected label. The label removal component may include a pressurized gas system configured for ejecting a rejected label.