Motion Control & Drives


Servo technology for yoghurt

April 2003 Motion Control & Drives

The Dosomat filling machine fills yoghurt with and without fruit additives into 1 kg tubs. For this purpose, high requirements are specified in terms of cleanliness, packaging material sterilisation, precise dosage and reliable capping techniques. This plant is designed for a maximum of 9000 tubs/h. This means that up to nine tons of yoghurt can be processed per hour.

Thanks to modular technology, movement sequences from various production processes can be precisely adapted to the respective products according to customer requirements. Geared servomotors operated by Movidrive drive inverters allow all movement sequences to be adapted to the respective product. The filling sequence consists of:

* Unstacking of the tubs from storage.

* Sterilisation of the tubs with hydrogen peroxide.

* Filling of the tubs with various yoghurt types under re-infection-free conditions.

* Unstacking of the lids from storage.

* Sterilisation of the lids with hydrogen peroxide.

* Sealing of the tubs with their lids.

The Dosomat drives are mainly SEW speed-controlled right angle geared motors that are adaptable to machine design. The dosing mechanism is driven by four SEW synchronous geared servomotors with reduced backlash bevel gear units.

The process is controlled by four servo controllers from the Movidrive MDS series with electronic cam and internal synchronous operation technology functions as well as additional individual technology programmes under IPOSplus, for the realisation of the special filling curves in terms of volume flow/time per tub. Two SEW K-series geared motors - one each for three dosing nozzles - are responsible for dosing by removing the product from the feed hopper and ejecting it into the tubs via filling valves. A geared servomotor controls the opening degree of the filling valves and the fourth geared servomotor performs the precise lifting or lowering of the tubs under the filling valves.

The precise co-ordination of all the elements in the system is affected via communication with Profibus. The plant is also equipped with a remote diagnostics system whereby the operations engineer is automatically notified of a fault, and its type.

For more information contact Carrina Davies, SEW Eurodrive, 011 248 7000, [email protected], www.sew-eurodrive.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Medium voltage drive for enhanced energy efficiency and process optimisation
Schneider Electric South Africa Motion Control & Drives
Schneider Electric South Africa has unveiled its cutting-edge Altivar Process ATV6100 medium voltage (MV) drive range, designed to enhance energy efficiency and operational reliability across various industries.

Read more...
Powerful high-precision hexapod
Motion Control & Drives
With the HEX150-125HL, Aerotech is launching the latest generation of its hexapod technology. The compact six-axis positioner combines precise movements with high load capacity and simple integration.

Read more...
Servicing the electric motor sector
Motion Control & Drives
Hexagon Electrical has expanded its manufacturing and service capabilities to meet the growing demand for customised, high-performance specialised electric motors in heavy engineering, and hazardous industrial and mining applications.

Read more...
Control system for deep antenna
Rockwell Automation Motion Control & Drives
When a major university in South Korea set out to build a 21-metre deep space antenna, the researchers needed a control system that could track celestial objects with pinpoint accuracy, a level of precision they thought was out of reach. By partnering with Rockwell Automation, they discovered that the right technology and support could turn their vision into reality.

Read more...
Cable solution simplifies connectivity
SEW-EURODRIVE Enclosures, Cabling & Connectors
Cabling can be one of the most challenging aspects of automation and drive system installations, often leading to delays, faults and inefficiencies. SEW-EURODRIVE offers a solution that simplifies connectivity, its innovative Digital Data Interface technology combined with a single cable system.

Read more...
Manufacturers should go PFAS-Free
igus Motion Control & Drives
igus continues to develop engineered plastics that are free of per- and polyfluoroalkyl substances (PFAS-free) in response to mounting evidence of severe environmental and health hazards caused by the chemicals.

Read more...
South African paper producer partners with ABB
Motion Control & Drives
Neopak, a leading manufacturer of containerboard and paper products, has renewed its partnership with global technology company, ABB to upgrade the existing automation system at its Rosslyn Paper Mill in Pretoria.

Read more...
ABB supplies electromagnetic stirrer to world’s largest electric arc furnace
Motion Control & Drives
ABB has secured an order from Çolakoglu Metalurji. for an ArcSave electromagnetic stirrer to be installed on one of the world’s largest electric arc furnaces (EAF)

Read more...
Compact, powerful and green mini-picker
Motion Control & Drives
SkyJacks has introduced Jekko’s Mini Picker to the southern African market. This is a compact, highly versatile and environmentally friendly electric mini-picker that is set to redefine lifting capabilities across multiple industries.

Read more...
Redefining industrial lifting
Motion Control & Drives
The Konecranes S-series hoist redefines industrial lifting through its integration of a ground-breaking synthetic rope with smart features, a lifting capacity of 20 tons, and the ability to adapt to diverse girder configurations.

Read more...