Italian manufacturer Feba has sold a second 4L/350 automatic four-shaft, twin-blade lathe slitter to a major tape producer in Milan. The client purchased this machine following outputs on the first one of up to 19,000 rolls in one eight hour shift, achieved whilst slitting logs of mid yardage polyester tape down to 12 mm.
The 4L/350 uses a four-shaft turret system that allows operators to off-load the slit rolls and reload fresh logs on to the shafts safely whilst the other two shafts are being individually slit by their own blade. This is said to achieve not only far higher yields, but a far superior slit because two blades are used to cut the logs: one for the top and one for the bottom shaft.
Each blade is automatically adjusted for core cutting and axis angle by the integrated application of Omron’s linear motor displacement system. This has allowed Feba to produce what it claims to be the world’s first fully automatic, “no intervention” slitting operation on a lathe machine.
All Feba lathe slitters can be specified to remove the need for the operator to manually set the movements and distances. Using sonar, these machines can automatically position the blade in relation to the external diameter of the log being slit; and, using laser, automatically self centre the blade, “irrespective of its diameter, or how much has been removed during the grinding/polishing process”.
The company claims this system will not only slash cycle times when loading different diameters of material, but also when the operator has to change blade diameters and angles.
It is these features that are said to have seen several Feba machines installed in the UK in the past few months.
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