Slitting & Rewinding
The Universal X8 slitting machine
Two years ago, Universal Converting Equipment developed its X8 slitter rewinder, which was an evolution of previous machines with extensive automation to virtually eliminate operator input allowing the machine to run continuously.
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t was launched to a small number of customers to allow the automation systems to be fully tested. It was introduced to the market at the K2022 exhibition and we will have one on our stand at the ICE 2023 exhibition.
We are being told that it is the “Most productive duplex slitting machine in the world”. Universal Converting Equipment looked at all the set up and running requirements and automated them. In addition, due to the high output of the machines, the Universal X8 can also be integrated with roll handling systems to weigh, label, wrap and palletise the finished rolls. Alongside productivity, the Universal X8 slitter is a very safe machine to operate. The best way to prevent operator injury is to remove any task that could have a hazard. EN13855 defines the safety zone required when using laser safety scanners or light barriers to prevent access to a moving machine. Typically, the safe zone on a slitting machine whether it has a turret rewind or a duplex rewind
is about two metres. The actual distance depends on the stopping time and safety device used. Automatic core loading, positioning and unloading means the operator does not have to access the rewind area between sets of finished rolls. Having a duplex machine, rather than turret, means that access to the rewind shafts when the machine is stopped is simple. Some companies still supply turret slitting machines, allowing access to the non-winding shaft whilst the machine is winding This will clearly contravene EN13855 and places the operator very close to the winding shafts. Unless the machine stops in less than 0.5s, this should not be allowed. Automating the core loading, positioning and unloading as has been done on the Universal X8 would be needed to allow the machine to start winding whilst the rolls are removed and the cores re-loaded. The rewind shaft automation also prevents repetitive strain injury caused by frequent loading/ positioning of cores and unloading of finished
rolls. Operator safety must be a priority and if the tasks are automated, the risk is removed. Multiple laser safety scanners and physical guarding ensures there is no access to the machine unless it is in a safe condition.
Does the system work? Universal were instrumental in the $8m automated slitting operation installed last year at Bryce Corporations’ manufacturing operation in Searcy, USA. This installation included multiple X8 slitting machines, automatic unloading and labelling, automatic roll wrapping and automatic palletising. Since installation, Bryce has achieved record levels of production.
In answer to the “does it work” question, Bryce visited Universal Converting Equipment at the K 2022 exhibition and ordered another two X8 machines. It said that no other companies were prepared to guarantee the performance level being achieved by the Universal X8 slitter rewinders.
22
September 2023
www.convertermag.com
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