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 Fosber
Master
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Technical
Features
Board width (max.): 98 - 110 in.
Board length (min.): 20 in.
Cut accuracy: +/- 0.04 in.
Sheet squareness: +/- 0.06 in. over 98 in. |
The Master cut-off knife is comprised of two main sections - the cutting
section and delivery section. The cutting section consists of a pair of
knife bars on which the single-piece blades are mounted. Single piece helical
knife blades are utilised to soften the impact of the cut action on the
knife bars. In this way very low inertia shafts can be used. A principal
design feature of the Master cut-off knife is its ability to cut short sheets
at the highest line speeds. The position of the upper blade is fully adjustable
via the regulating screws housed in the knife support, which is an integral
part of the knife bar. In this way the blade is held in position for optimum
blade tune. Rotation of the shafts is guaranteed by meshed gears (one for
each side) fitted at the head of every knife bar with positive drive between
them. The delivery infeed section consists of a supporting plate to hold
the board with an independently driven pull-roll section. The delivery infeed
section can be rotated back and away from the cutting section via pneumatic
cylinders. This creates a space to allow convenient and immediate access
to the knife bars and facilitates blade tuning and general maintenance of
the machine. On the machine outfeed side, the Master is fitted with an independently
driven no crush exit roll section. In order to meet different production
requirements the Master is available in various performance levels, corresponding
to the number of drive control units. All drive motors are AC and cut length
precision is guaranteed via a Vector Drive Control with a power recovery
system, greatly reducing power consumption. The Master can be further fitted
with an independently driven anti-skew outfeed belt system and the infeed
section can be fitted with a secondary pull-roll section. The Master has
a high performance PC for the electronic control of the drive and cut, visualisation
of orders, machine status, production data and fault diagnosis. The PC also
is utilised to communicate and interface with the other dry-end machine
units. |
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Evolution
In Corrugated
