Technology That Delivers: New Production Opportunities at Hopf GmbH with the ARCentre Welding Robot from Our Partner ERL

At the heart of the new installation is the Panasonic TM-2000-WG3 welding robot, which enables flexible welding of components on two alternating workstations. Depending on the application, the stations can be configured either as a single-axis rotary positioner for machining long workpieces or as a tilt-rotate positioner for components requiring synchronized positioning during welding. The positioners can accommodate workpieces weighing up to 500 kg and are designed for welding current transmission of up to 500 A. Thanks to the identical arrangement of the positioning units on both stations, welding programs can be copied seamlessly from one station to the other.

To ensure optimum positioning relative to the workpiece, the system is equipped with an almost 8 m long travel track. Integrated into the track are all required utility lines, including power and compressed air, as well as the Rolliner wire feed system.

Reliable wire delivery to the robot is ensured by the Rolliner wire feed system. Its pairs of feed rollers, offset by 90° from one another, guide the welding wire particularly smoothly, ensuring excellent arc stability. At the same time, wear and the associated maintenance requirements are significantly reduced. This also eliminates downtime for wire spool changes, particularly when using 250 kg wire drums positioned outside the system. In addition, the need for a separate wire tender cart is eliminated, reducing both costs and floor space requirements. Another advantage is the integrated quick-change system, which allows operators to switch between drum and basket spool holders without tools, enabling special filler materials to be processed on the robot quickly and flexibly.

The system also features an automatic torch cleaning station to ensure a smooth welding process. Its integrated reamer reliably removes weld spatter from the nozzle before anti-spatter agent is automatically applied. This maintains consistently high weld quality while significantly reducing unplanned downtime. In addition, the integrated water cooling system provides fast and reliable control of the torch coolant temperature, protecting wear parts and significantly extending their service life.

As a result, downtime is significantly reduced and productivity is noticeably increased. At the same time, the system takes over physically demanding tasks such as the precise positioning of workpieces, providing valuable relief for the operating team.

In addition to efficiency, safety plays a key role. A fully enclosed work area, modern light curtain systems and an automatic fume extraction system ensure a safe and clean working environment. The large extraction hood covers the robot's entire working envelope and reliably captures welding fumes at the source. The extracted air is then cleaned by a central extraction and filtration system.

To enable optimum crane loading, the extraction hoods automatically move to a parking position after the welding process and return over the workpiece again when the welding program is started.

This includes accessibility checks, collision monitoring, and the analysis of welding and cycle times. As a result, production sequences can be coordinated in advance, ensuring a smooth and efficient production start-up.

Compared with manual welding, the robotic system operates far more efficiently. In addition to higher welding speeds, the powered auxiliary axes contribute significantly to improved workpiece handling and shorter process times. With its investment in the new ERL system, Hopf GmbH is making a deliberate commitment to future-oriented manufacturing technologies. The objective is not to replace skilled workers, but to support them by reducing their workload, ensuring sustainable process and product quality, and strengthening the company's long-term competitiveness.