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Safety at high speed in a linear robot with e-chain system

Safety at high speed in a linear robot with e-chain system

Twice as fast at half the weight: this is what makes the linear motor robot from Fibro Läpple Technology (FLT) different from many other solutions. In order for the linear robot to be able to get production up and running quickly and reliably, a compact, durable and silent energy supply was required. A side-mounted Igus energy chain system with pre-harnessed chainflex cables proved to be the optimal solution.

Linear robots are the automation tool of choice for machine or press loading, order picking, high-bay warehouse loading or even for transport and handling tasks. Due to the demands of production for faster, more intelligent and economically profitable solutions, FLT has developed a linear robot which maximises production performance. In a new carbon fibre design, the linear motor robot saves up to 50% in weight compared to conventional solutions. The weight reduction enables twice the speed accelerations of up to 26m/s2 at twice the positioning accuracy.

Challenge of high forces

Instead of a rack and pinion drive the designers chose a linear motor which allows very high dynamics. An unsupported energy chain of the E4.1 series from Igus ensures a secure energy supply for the z-axis. The integration of a suitable energy chain solution in the compact installation space of the

x-axis was a challenge. This was because a classic gliding or unsupported solution was out of the question due to the high forces. “Together with Igus, we therefore decided on a side-mounted energy chain,” explains Boris Bind, head of mechanical design and development at FLT.

An E4.1 series energy chain is used with additional sliding pads that further reduce wear. The engineers also selected the Igus range of cables. They chose pre-harnessed chainflex cables – readycables – that are specifically designed for use in energy chains. The large number of tests in the company’s own 3,800 square metre test laboratory means that Igus is able to give a guarantee for 36 months. The complete system is housed in a special guide trough, which further minimises noise and increases the reliability of the system.


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