At last year's Drupa exhibition, BOBST launched a new version of its EXPERTCUT 106 PER blank separating die-cutter designed to deliver more production by maximizing uptime and speeding up a number of processes. The first of the new generation began shipping late last year and Jacques Reymond, Head of Product Marketing Business Unit Sheet-fed says that, while the changes to the EXPERTCUT 106 PER are evolutionary, the effect is fairly revolutionary.
"Most people know that we continuously innovate in the technology we use in our machines and that sometimes that development feeds into new machines, sometimes into retro-fits for older models, and sometimes into giving extra features or new functionality to our current line-up. The EXPERTCUT 106 PER has proved to be the workhorse for the world's medium to high volume carton makers and we have been able to give it some new features that provides users access to increased net production, lower costs, easier maintenance and less waste. Together they add up to really substantial gains for users."
The modifications run throughout the press and include new feeder technology, changes to the sheet transport system, faster make-ready in the stripping and delivery sections and developments that reduce the wear, and consequently increase the life, of die-cutting tools.
"The first thing we have done is to further develop our Smart Feeder system which manages the feeding of sheets into the EXPERTCUT," explains Reymond. "Smart Feeder II is fitted with a suction head that has an improved sheet lift-up and pass over onto the feed table, as well as new features that ensure quick setting and consistent feeding, whatever the substrate. Along with this, a new feed table with new equipment reduces the number of sheets lost during a machine stop, makes it quicker to set, and delivers more consistent sheet transportation."
Always with an eye towards reducing carton makers' on-costs, a new technology dubbed Tool Saver instantly takes the pressure from the platen section when no sheet is present. "By removing the pressure when no sheet is there Tool Saver increases the operational life of tooling," says Jacques Reymond. "It means that high quality cutting can be maintained for an increased number of impressions, which reduces the cost of manufacturing each box. As soon as the feeding of sheets restarts, the press instantly returns to the pre-set production speed and platen pressure with no need for the operator’s intervention, reducing the production interruption to a minimum."
The new EXPERTCUT 106 PER also calculates the optimum tie-sheet interruption based on the thickness of the carton, saving as many as seven sheets per tie-sheet insertion cycle. "Considering the number of tie-sheets that need to be inserted per pallet, this new system delivers substantial time, output, and financial gains."
The blanking section of the new EXPERTCUT has a feature called Quick Set which makes it fast and easy to set thanks to all the non-stop fingers locking and un-locking by pushing a single button. "Also the tool frames don't have to be set back to zero when changing jobs, which makes changeovers quick and easy for the operator," Jacques Reymond explains.
New Bernoulli sheet braking tablets extend control to the very edge of the sheet as it stops for stripping and blanking, which is key to maintaining flatness and subsequently quality. The new units also have automatic self-cleaning systems, cutting the maintenance and increasing reliability.