Paper Technology Journal - Voith

Automation: Modern components for
automation, such as core feeds, roll
change, reeling drum change etc. are
integrated.
Fig. 11 clarifies the function of the T-LIFT
system.
TORO Combi
The principle of the Combi winder has
already been introduced with the example
for the Lang Papier machine. But this
concept can also be of use for a winder
integrated in a production line. Therefore
our suggestion for a company producing
offset as well as gravure paper rolls
would, for instance, look like Fig. 12.
With this type of winder, the many narrow
offset rolls could be wound in the
winder roll bed, and the few wide gravure
paper rolls in the single drum mode. This
concept is also interesting for new paper
mills which want to produce only offset
after starting up, but later also want to
produce gravure rolls. In this case the
customer would start to run the machine
in the two drum mode which is considerably
simpler and more effective. Later on
– the design of the winder allowing such
a retrofitting – he can easily add a single
drum operation at any time.
TORO On-line
A further task we have set ourselves –
our experience with calenders and roll
wrapping machines has certainly been of
influence here – was to combine the various
finishing processes.
Fig. 13 shows the multitude of winding
processes at the finishing stage. By
PM/Coater
1 2
Unwind Rewind
PM/Coater
1 2
Unwind Rewind
PM/Coater + Janus
Unwind
Finishing
Reel Storage
Reel Storage
Re-reeler
combination of the different processing
stages (Janus/Toro, Toro/Twister, Janus/
Toro/Twister) these winding processes
can be minimized, which will have a positive
effect on the quality of the end product.
It would also lead to a marked reduction
in investment and personnel costs.
In place of the TORO on-line concept
Fig. 14 shows a Janus calender with integrated
roll wrapping machine. In order to
maintain the paper quality by respective
adaptation of the line pressure and the
roll temperature during speed alterations
Janus
Toro Winder
3 4 5 6 7 8
Unwind Rewind Unwind Rewind Unwind Rewind
Janus + Toro Winder
3 4
Unwind Rewind
Reel Storage
1 2 3
Rewind Unwind
Fig. 13: Winding processes within the field of
finishing.
Fig. 14: TORO Online.
Twister
Toro Winder + Twister
Twister
at the time of set changes, the thermal
rolls of the calender are fitted with
inductive heater bars.
So as to be able to follow a modern
paper machine, the production speed
of such an on-line plant should only
be 5 to 10% higher than the speed of
an “autarkical” JANUS calenders. With
the calendering potential of the JANUS
technology this should not be a problem,
even with fast running paper
machines.
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