Welding paste automated application with robot

This robot applies welding paste for automotive EGR coolers. The welding paste process yields a high quality finish in the parts. After the welding paste is applied, the parts are heated in an oven, that melts the paste and welds the tubes, housing and components.

The paste needs to be applied with accuracy. There is a high variabilty along the production process, because of the nature of this special paste. It needs to be calibrated after time.

This operation was done previously by a skilled worker.

The robot cell improves the process:

• high repeatability
• cost savings
• automatic paste calibration

Decuna developed this project as a "turnkey" solution for our customer. Decuna dealt with mechanical design, supplier management, integration, production start and support all over production ramp-up.

Demo Video

The application can be seen in this video from different angles. A special tooling applies the paste in the inner side of the part, and the robot impregnates the outer side. The complete piece contour is covered with the robot arm movement and the paste nozzle.