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Stepper motors for actuation on bag-in-box machine

Speed, flexibility, and cost—few machine characteristics are in demand to the extent that these three are. Pattyn meets this trend head on with a PC-based control platform.

Stepper motor terminals (above) do a good job of controlling the four stepper motors used on the Model Ceflex-21.
Stepper motor terminals (above) do a good job of controlling the four stepper motors used on the Model Ceflex-21.

A maker of bag-in-box packaging machines based in Bruges, Belgium, Pattyn Packing Lines recently introduced the Model Ceflex-21. Operating at speeds to 12 cases/min, it automatically erects corrugated cases by vacuum suction, pulls a bag from a roll, opens the bag, and places the bag into the formed case.


The integrated bag-in-box system is controlled by a Beckhoff CX1010 Embedded PC with directly connected EtherCAT terminals. In addition to the standard I/O terminals, the Beckhoff EL7041 and EL7031 stepper motor terminals are used to control the four stepper motors used on the machine.


“Stepper motors are easy to use and have a long useful life, especially in packaging equipment,” says Ruben Nielsen of Pattyn North America. “And if anything ‘crashes’ in the machine, the stepper motor will go back and find its original steps very easily. On top of that, stepper motors are very cost-effective.”

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