QR Code Labeling & Inspection for Plastic Products through Cartesian Robots

Industry > Metal·PlasticsApplication > InspectionSector > Manufacturing

This automation solution replaces manual plastic product inspection and QR code labeling with a system integrated with vision inspection and four Cartesian (Gantry) robots.

By utilizing four Cartesian robots, the workload is strategically distributed based on the required takt time, enabling rapid and continuous operations. The system performs comprehensive exterior inspections both before and after the QR code is applied, as well as a final attachment verification to minimize defect rates.

The project was initiated to achieve 100% inspection of all products to prevent defects or mixed-part issues, ultimately driving significant quality improvements and productivity gains.

Components

Robot	Robot: 4 Cartesian Robots (Multi-Axis Linear Systems) Roles: 1. Product Stacking/Loading 2. Vision Inspection Support 3. Defect/Mixed-Part Sorting & Ejection 4. Finished Product Palletizing Vision System: High-resolution cameras for exterior defect detection and QR code readability verification. Labeling Unit: Precision applicator for consistent QR code placement.

Workflow

STEP 1.	Feeding: Input of plastic products into the system.
STEP 2.	Alignment: Precise correction of the product’s position.
STEP 3.	Transfer: Loading the products onto the main workstation.
STEP 4.	Exterior Inspection: Initial vision check for surface defects or incorrect part types.
STEP 5.	QR Labeling: Accurate application of the QR code label.
STEP 6.	Verification: Vision inspection of the attached QR code (readability and position).
STEP 7.	Sorting: Automatic ejection of defective or mismatched parts.
STEP 8.	Palletizing: Loading the verified "Good" products onto the discharge pallet.

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Features

Improved Production Efficiency & Enhanced Quality

Minimized Downtime: Continuous automated operation minimizes idle time, leading to a direct improvement in overall production efficiency.
Zero-Defect Goal: 100% vision inspection is performed on every unit to minimize defect rates and prevent faulty products from reaching the next stage.
Labor Optimization: Reducing the number of manual management points allows for a decrease in required human personnel, lowering operational costs.

Cost-Effective Automation via Cartesian Robots

Compact Installation: Small-scale Cartesian robots allow for a space-saving setup tailored to the existing workspace.
LOB (Line of Balance) Optimization: Workload is strategically distributed across the four robots to eliminate bottlenecks and significantly shorten cycle times.

Results

ROI Period	24 months
Key Benefits	Significant increase in productivity through high-speed automation. 100% quality assurance achieved via integrated vision inspection.
Client Feedback	Since our process requires a very short takt time for continuous operation, we needed a highly synchronized system. Nau Technics' solution allowed us to redistribute the workload effectively, enhancing both productivity and quality simultaneously.