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Technologies and Automation Levels of End-of-Line (EOL) Testing Machines

End-of-Line (EOL) testing machines can employ various technologies and degrees of automation to ensure product quality and reliability at the end of the manufacturing process.

EOL technologies and automation levels

Manual testing

Manual testing machines: Handheld Measuring Tools During manual testing, operators use handheld measuring tools to inspect products. This method is lower in cost but carries a higher risk of error due to human factors.


Partially automated testing

Semi-Automatic test stations: These systems combine automated and manual processes. Operators initiate and supervise the testing process, but data collection and result evaluation are automated. This increases efficiency and reduces the potential for errors.


The following machine is a semi-automatic testing station that uses a high-resolution camera to measure and inspect surface quality and dimensions after product insertion. Defective items are sorted into a sensorized reject bin, which can only be opened with the appropriate authorization. The machine is designed with interchangeable fixtures, making it adaptable for new products in the future.


Fully automated testing

Robotized test stations: In fully automated systems, collaborative robots perform product testing and handling. These systems provide high accuracy and speed, enabling continuous 24/7 operation.


Example:The images below depict a robotic cell designed to serve an injection molding machine, automatically inspecting finished products and engraving a DMC code on good products using a laser marker. Defective items are automatically placed into a separate reject storage. It is crucial for such systems to request periodic checks automatically or perform them automatically using OK and NOK sample pieces when needed.



Automated inspection systems: These systems use various technologies, such as camera systems and sensors, for automatic product inspection. They can process large amounts of data quickly and make real-time decisions.


In the machine below, a SCARA robotic arm moves the item to be inspected in front of a high-resolution camera system to examine its geometric dimensions and surface quality.



The image below shows a machine for applying surface coatings. Since surface coating quality is crucial for subsequent technologies, an inline surface inspection system was integrated to accurately examine the finished coating.


Integrated testing solutions

MES and IoT integration: These systems integrate testing processes with manufacturing execution systems (MES) and industrial internet technologies (IoT). This allows for real-time data collection and analysis, optimization of the manufacturing process (Industry 4.0), and predictions to avoid potential issues.


Marking technology

It is essential to mark, or label measured and inspected products according to customer requirements. We can implement various technologies to meet the specifications as needed.


Testing technologies experience: Over the past years, we have gained significant experience in the following testing technologies

-    Resistance Measurement
-    3D Measurement with Camera and Laser Systems
-    2D Measurement with Camera and Laser Systems
-    Scratch and Surface Damage Inspection
-    Soldering Quality Inspection
-    Pressure Testing
-    Leakage Testing
-    Welding Inspection
-    Force and Displacement Measurement Technologies
-    Surface Temperature Measurement
-    Shape Feature Inspection
-    Weight Measurement

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