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SILOG engl 1-2012

Newsletter SILOG News 5 systems, the number of employees for feeding and sweeping, and much more, can be calculated from the throughput rates of a CFC or an IRV as well as from the number of destinations and the se- lected sorting concept. Guided mail streams – at the heart of sorting “Basically there are two mail streams that flow into the sorting centre: on the one hand the collected, unsorted mail from the post boxes and, on the other hand, the mail pieces of the large volume sup- pliers who, for example, send advertising material or invoices in great quantities,” explains Ewert. In Western industrialised countries, only 5 to 7 per cent of the vol- ume of mail pieces originates from post boxes, while up to 95 per cent of all mail comes from large-volume suppliers such as banks or telecommunications compa- nies – often already pre-sorted and frank- ed. Thus, some processes are unneces- sary, which makes business mail less ex- pensive to send than standard mail. In contrast, the mixed contents of the post- bags first land in the drum of the CFC, which separates the mixture into streams that can be processed optimally by ma- chines. These are sent either to the stan- dard letter or flats area, or for manual processing, which receives everything that is regarded as non-machine process- able. possibly weighed and cancelled, sorted and then delivered carefully at the end of the process to the assigned stackers. Once a stacker is full, the operators emp- ty it into the trays, which are located in a drawer directly under the lower sorting level. The operating personnel then indi- cate to the tray the path it is due to take by means of a label issued by the rele- vant printer. Following the culling of non-machinable mail, the CFC faces the mail, aligns it, cancels it if necessary, and stacks it in the stackers. The level of automation for the post mix has increased significantly since Siemens introduced the latest version of the CFC to the market. The 3004-type machine can now also face flats and thus prepare them for further processing in the OMS. Ewert states: “The percentage of mail pieces that has to be processed manually is becoming smaller and small- er due to the increased quality and the range with which Siemens can now sort automatically.” Whatever comes from the CFC – or arrives already faced in trays – is now fed to the sorting machines. The IRV, which runs the appropriate sorting programme, is avail- able for standard mail pieces. Here the letters are fed in, singulated and checked for machine-processable formats and con- tents. Their destination addresses are read and, if necessary, video coded, and the letters are printed with bar codes, Flats go their own separate ways. There- fore, Siemens has developed a machine concept – the OMS, which uses the ideal technical solution of automation to per- fection. It all starts with the Tray Unload- ing Device (TUD), which is the operator’s best ally when it comes to loading the system, and continues right up to the au- tomatic rejection of the labelled tray on the conveyor system that relays the cor- rect commissioning area to the truck. The OMS processes do not cease to impress as they gently whisk mail pieces away for a perfect combination of high throughput and efficiency. The trucks are driven to the predefined regional centres – the Siemens consultants also provide these commissioning and route plans – and de- liver the mail to inward sorting. “But that is another story,” says Holger Ewert, who turns to one of the tasks at hand: the de- velopment of a technical modernisation concept for India Post. << rations and with a variable number of outlets. In essence, the system configuration de- pends on responses to questions such as these: When is sorting performed and to what degree of thoroughness? Which reading tasks arise? By when do certain postcode areas have to be completed? Taking it down a technical notch, the number of stackers, the length of the Sorting centre solution with a 2-Feeder Open Mail Handling System for flats sorting and a Culler Facer Canceller equipped with all functions needed for letter sort- ing including B4 formats.