Other technologies


Technology protecting a major printing investment

Second Quarter 2004 Other technologies

The Natal Witness Printing Company is relying on Tectra Automation, local distributor of Bosch Rexroth products and components, for support of its modern KBA Comet shaftless printing press, manufactured by Koenig & Bauer AG in Germany.

A schematic of the KBA Comet shaftless printing press
A schematic of the KBA Comet shaftless printing press

The multimillion-rand investment, one of the most advanced shaftless presses in South Africa, employs various Bosch Rexroth components to print up to 70 000 copies an hour of the Natal Witness and various other publications. A single-width, double-circumference, fully-computerised press, the KBA Comet uses shaftless technology and damping systems, as well as a turret paster, which automatically replaces and joins one paper reel with the next without interrupting the print run.

Rexroth's Electric Drives and Control division, formerly Indramat, pioneered shaftless drive technology. Today, its SYNAX technology allows for the elimination of mechanical linkages and the use of high-precision servo drives produces machine units that are optimised to the process. This allows repetitive jobs to be completed rapidly and converting processes changed over flexibly to new products and formats at the touch of a button. Machine axes can be synchronised to specific requirements by means of various operating modes. The SYNAX200 modular controls and intelligent drives are the basis for the development of modular machine designs. High register accuracy - thanks to low torsional elasticities and gear backlash - results in considerably less start-up waste. This reduces manufacturing costs and makes the production of small editions more economical.

The modern press, housed in Pietermaritzburg, incorporates 38 Bosch Rexroth drive stations with the latest DIAX 04 servo drives, MHD motors, DKR drives and 2AD asynchronous motors specifically selected for the synchronisation of the shaftless printing press. MHD motors are known for synchronisation of shaftless printing presses, because of their high resolution, high-dynamic nature. DIAX 04 servo drives deliver further speed advantages by allowing control loops to be handled via fibre optic cables.

With the advantages that shaftless printing presses have over synchronised predecessors, the press now runs significantly faster (at 625 m per minute), and setup-times have been reduced from 5 hours down to 1 hour. Capacity has been sufficiently increased to allow various other newspapers and inserts to be handled by the same new printing press. Although operators received training from KBA and greatly reduced maintenance as a result of the press's modern design, the high-value investment requires the close proximity of Bosch Rexroth qualified support technicians, who will be supplied by Tectra Automation. Computerised control allows faultfinding to be carried out from as far away as Germany, via the Internet. The press uses SERCOS - the preferred digital interface between motion control components and digital drives.

For more information contact Georg Venter, Tectra Automation, +27 (0) 11 971 9400, georgv@tectra.co.za, www.tectra.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Pressure measurement converter for harsh industrial conditions
First Quarter 2020, Instrotech , Other technologies
Instrotech is offering Kobold’s PNK pressure measurement converter, used for the electrical remote transmission of pressure. For use in heavy machinery, engines, shipbuilding and automotive engineering, ...

Read more...
Three lubrication myths
First Quarter 2020 , Other technologies
As specialists in lubrication reliability solutions, the team at Lubrication Engineers (LE) South Africa frequently comes up against myths relating to lubricants. “People believe things or are taught ...

Read more...
Top 5 industrial automation trends in 2020
First Quarter 2020 , Other technologies
1. Deploying IIoT edge 2.0 solutions The edge of IIoT enabled architectures is becoming increasingly important due to their role in digital transformation strategies. Initially focused on delivering ...

Read more...
Food grade chain hoists
First Quarter 2020, Becker Mining South Africa , Other technologies
New to Becker’s range of Kito hoists are food grade electric chain hoists, designed for safe lifting applications in contaminant controlled and corrosive processing environments, where pristine cleanliness ...

Read more...
Digital factory revenues to jump to US$375 billion by 2030
First Quarter 2020 , Other technologies
Technology investments in the industrial and manufacturing sector are set to skyrocket, jumping from $59 billion in 2019 to $375 billion in 2030. Including hardware revenues, that figure climbs to over ...

Read more...
Why are half of IIoT deployments failing?
First Quarter 2020 , Other technologies
The global Industrial IIoT business is arriving at a tipping point, with the industry reaching a connectivity milestone next year that will pave the way for market-changing events like the proliferation ...

Read more...
How real is augmented reality?
First Quarter 2020, Absolute Perspectives , Other technologies
The early morning air was cold when we arrived at the mine for an underground visit. Our hosts were keen to show us the practical challenges of the drilling and blasting operation, and the many ways in ...

Read more...
Switched interlocked socket range
First Quarter 2020, Powermite - Div. of Hudaco Trading , Other technologies
Powermite’s range of plastic switched interlocked sockets form part of a new series of cutting edge Gen 2 plastic industrial plugs and connectors which are poised to raise the bar for efficiency, versatility ...

Read more...
Universal industrial Ethernet absolute encoder
First Quarter 2020, Vepac Electronics , Other technologies
Do you use different protocols on your machines or carry out repairs and don‘t always know what to expect? With Vepac’s WDGA universal IE encoder you are completely flexible. You do not have to worry ...

Read more...
Protecting with lubrication
First Quarter 2020 , Other technologies
Proper lubrication is essential to the correct functioning of mechanical equipment and ensures its longevity. “Even over-lubricating is problematic as it causes grease churning and overheating, which ...

Read more...