KEB helps Merz packaging machine achieve 900 sachets per minute

See KEB Automation at MachineBuilding.Live, 4 October 2023, on stand 51

When packaging machine specialist Merz needed a servo motion solution for its latest machines, it turned to KEB Automation.

Creams, tablets or tobacco: the list of products that are packaged and filled with the help of machines from Merz goes on and on. The company focuses on high quality packaging machines and special machines for stick packs. The drive solutions required for this need to provide high dynamics, high reliability and high efficiency.

The goods need to be protected from damage, remain fresh for a long time and free of any contamination. The machines required for packaging and filling are manufactured by Merz Verpackungsmaschinen based in Lich, Germany. 90 employees are responsible for designing, developing, manufacturing and selling packaging machines and special machines for stick packs, as well as 3- and 4-side sealed bags. Founded in 1971 as a design office, Merz today supplies industries that are as diverse as the machine portfolio itself. Customers from the pharmaceuticals, cosmetics, chemicals, tobacco and food industries rely on its machines.

The cooperation with KEB Automation has proven its value over the last two decades. For example, many machines contain entire systems from KEB and ensure reliable, highly efficient performance with drive controllers and control systems, among other things – as the ‘heart’ of the machine. The SB18-2T snus packaging machine, for example, is a form, fill and seal machine for smokeless oral tobacco portion packs in filter foil.

Tobias Merte, head of PLC programming at Merz comments: “The SB18-2T operates fully automatically and processes types of fleece from the flat film roll. Since it has an output of up to 900 sachets per minute, we need a system solution in which individual components are matched to each other and work smoothly. In the machine, we therefore rely not only on the C6 Smart control system, but also on the S6 servo drives, servo motors and the C6 routers from KEB Automation.”

Packaging machines require high dynamics

Artur Albring, sales engineer at KEB adds: “Typically, a control system as well as at least three servo drives and three servo motors from KEB are always used in the machines from Merz. We work out the desired drive solution together in order to meet the requirements of the machines in the best possible way.”

These requirements include, for example, the operation of the servo drives, high dynamics and the powerful performance of the drives. It is also important to keep the control cabinet as compact as possible. The book format of the KEB drives is suitable for this, enabling several drive controllers to be arranged next to each other in a space-saving manner. The control system is also responsible for several tasks. Albring explains: “The C6 Smart control system handles communication via Profinet and enables machine control and operation. Above all, however, the C6 control system is responsible for motion control and cyclical positioning in Merz packaging machines. For example, in the SBL50-2 stick pack machine.”

The safety aspect, which is important for Merz machines, is also mapped with the STO (Safe Torque Off) function via the drive controllers.

Volker Hedrich, head of electrical at Merz comments: “We put our packaging and dosing machines into operation in numerous industries worldwide. This also means that the requirements placed on our machines sometimes differ significantly. It is then a great advantage for us that we can fall back on customised drive solutions from KEB.”

KEB (UK) Ltd

5 Morris Close
Park Farm Industrial Estate

+44 (0)1933 402220

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