TPT November 2011

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November 2011 71 ›
Technology Update
New volume crimping machine up to
6” industrial hose, 3” six spirals, max Ø 220 mm
From design to production,
made in Italy
for superior quality
Hydraulic
hose & tubing
processing
equipment
®
©bright
light
2010 -www.brightlight.it
production speeds on transforming lines
where they are applied.
Two versions have been developed;
these are identified as follows:
AD 256 E can operate with strip
widths maximum up to 250mm. and
maximum loading capacity, as per
weight, of 6,000kg per mandrel
AD 368 E can operate with strip
widths maximum up to 360mm and
maximum loading capacity, as per
weight, of 8,000kg per mandrel.
The use of this kind of decoiler offers
many advantages as:
• Possibility to be installed at the
beginning of a tube mill, both for
unalloyed carbon steels and stainless
steels.
• Do not require specific foundation
works
• Fast and easy installation. The
machines are complete and equipped
with autonomous hydraulic power
unit and control panel
• Require a reduced maintenance
procedure.
The strip coil is picked up from
warehouse and loaded on the mandrel;
a radial support together with a laterally
positioned roll provide a reference and
containment during the strip unwinding
at a high speed.
The expansion movement of the
section bends, controlled by a special
selector installed on
the main switch board,
assure the coil proper
centring and fixing on
the mandrel.
On the mandrels
it is also possible to
install additional bends
allowing the coil locking
with different internal
diameters.
Once the loading
of the coil is accom-
plished, the operator
(using appropriate
control switches on
the main control
board), will make the
pressure roll press on
the external diameter
of the coil avoiding any
OTO SpA has unveiled decoilers
that have an appropriate supporting
structure capable of simultaneously
handling two expandable mandrels that
are counter positioned.
Their main function is to support
the coil during the unwinding phase,
assuring a constant mechanical tension
on the strip.
The double mandrel solution is
extremely convenient because it offers
the possibility to put on the free mandrel
a new strip coil (on loading side) while
the other coil is being unwound to feed
the line.
This phase can be performed
in full security conditions for the
operator considering that the decoiler
is equipped with special protection
panels that efficiently separate the
strip unwinding side feeding the line
from the loading new coil opposite
side.
Their essential simplicity combined
with all necessary characteristics
required to accomplish at the best
their mission, give to the operator the
comfort to ease the machine handling
and execute some simple and small
regulations required, depending on the
raw material utilised.
These decoilers are particularly
recommended to process out strips
with very low thicknesses at a high
possibility of uncontrolled unwinding of
the coil once the retaining bulkhead is
removed.
For this reason the standard version
decoiler is equipped with idle pressing
rolls that require the operator's action to
put the head of a new coil into the strip
joiner unit to join it together with the tail
of the coil which is being processed in
the profiling phase.
As an option and on request when
coils of bigger thickness are processed,
instead of using idle pressure rolls
(and easily interchangeable) it is
possible to use motorised pressure
rolls.
They are driven by an electrical
motor coupled with a gear reductor and
are controlled by an operator, who uses
a special foot pedal actuator.
OTO SpA – Italy
Website:
Decoilers with two expandable mandrels
An OTO SpA
decoiler