Comau NJ-40 Robot for Injection Molding & Laser Marking

To meet the demands of modern plastic injection processes, Comau and MGM Robotics have developed a fully integrated system using Comau’s NJ-40 anthropomorphic robots.

The solution guarantees fast cycle times, high flexibility, and integrated traceability through automated laser marking and other post-processing functions.

In this application, Comau robots perform machine tending and laser marking within the same cell, ensuring seamless part management and real-time product traceability.


The robot handles components directly from the injection molding machine, performing multiple downstream operations without interrupting production.

The EUMP system by MGM Robotics integrates Comau NJ-40 robots into a modular automation kit, offering:

  • Laser marking for permanent QR-code identification
  • Short cycle times and process flexibility
  • Integration with additional post-process tools, including cutting, flamming, weighing, and labeling
  • Full compliance with safety standards and Industry 4.0 software for real-time control

The inclusion of laser marking ensures traceability throughout the product’s lifecycle, offering added value and quality assurance.

The robot unloads plastic parts from the injection molding machine and positions them for post-process operations, all within a compact, efficient cell.

Each component is laser-marked with a unique QR code or batch identifier, enabling automated traceability and eliminating the need for manual labeling.

Depending on the product and customer requirements, the system can perform additional steps including:

  • Custom handling and transport with tailored conveyors
  • Cutting (shears, clippers, knives)
  • Flamming, plasma, or hot air (650°C) treatment
  • Label application, weighing, deionization, or cooling
  • Manual/automatic tool changers
  • End-of-arm tooling specific to product geometry
  • RoboSafe safety software and energy-saving air systems

Comau brings decades of innovation and reliability in industrial robotics, empowering your plastic processing with smart automation and consistent performance.

The NJ-40 offers the perfect balance of payload, reach, and precision, enabling it to manage both handling and delicate operations like laser marking.

This solution minimizes downtime and labor by combining unloading, marking, quality control, and logistics into a single robotic cell.

The EUMP system can be adapted to your evolving production needs, supporting multiple tools, batch variations, and custom layouts—all driven by Comau technology.

MGM ROBOTICS realizes robotic systems and automated applications with the main objective of speeding up and simplifying production processes in different industrial sectors.​

Feasibility analysis, design, installation, training, assistance, documentation and certification are its strength to provide the customer with “turnkey” solutions.

​The constant updating of its team allows MGM to offer the most innovative technologies in the field of robotics, maintaining a high quality and production level.​Thanks the internal professional skills, MGM offers 100% customizable systems according to the customer’s needs.