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8 SAVIONEWS
9
SAVIONEWS
POLAR/I - Direct Link System
In the winding segment, process development and innovations have been always dictated by the needs expressed by the
world market. In order to provide an answer to the market requirements, Savio introduced the POLAR automatic winder,
available in a number of versions: the M/L with manual bobbin feeding and manual/automatic package doffing, and the E/I
designed as a stand-alone machine or for direct linkage with spinning machine.
The many configurations available make POLAR the ideal patner for the winding process.
MAIN FEATURES
The main features of the new model POLAR/I DLS (Direct Link
System) include the uninterrupted movement of the bobbin from
the ring spinning frame to the winder. The machine is equipped
with a newly designed yarn-end finder station aimed to increase
the machine efficiency.
This device can be combined with additional second and third
station in order to match the production of the longest ring frames.
The winding path has been modified, as regards the position of
the bobbin which is vertical; n° two bobbins as spares are present
in each position.
Particular attention has also been paid to the suction system,
which is the most energy consuming component of a winding
machine.
A special fan, featuring high aerodynamic performance blades and
a direct drive motor, minimizes energy consumption.
The motor is controlled by the machine’s PC via an inverter, which
automatically adjusts its speed to the real process conditions and
settings.
All lints are picked up in a collector box with dedicated filter placed
on the machine’s headstock.
The same suction system discharges the dust from the travelling
blower into another dust box with different filter.
SAVIO QUALITY
The CAT system (Computer Aided
Tension) online controls the
tension of the yarn. The winding
tension is continuously measured
by the piezoelectric Tensor device
which interacts with the yarn tensioner
via the machine’s PC and
modifies the load on the yarn in
order to keep the winding tension
constant during the whole bobbin
unwinding stage.
This control does not require
continuous contact between the
yarn and the sensor.
The Tensor device, located just
before the package, measures
the actual winding tension, acts
as an anti-wrap system and is
maintenance free.
The package quality is ensured
by electronic on-off system antiribonning
device which operates
only at the critical diameters.
Upon request, a new intelligent
Savio Bobbin Identification
System enables the detection
of the ring frame spindle which
produces faulty bobbins. As
additional feature, this system
can be equipped with a centralized
station which will automatically
remove the faulty yarn from
the detected faulty bobbin. In
addition, important features are
available depending on yarn type
and downstream process of the
packages. For coarse cotton
carded yarn count, each single
winding position can also be
equipped with a dust removal
unit, located at the level of the
balloon breaker, in order to catch
all fibrils and dust generated during
the bobbin unwinding stage.
The necessary vacuum is created
by an independent fan serving
two sections. The dust is discharged
in another collector box with
separate filter.
The CAP system (Computer
Aided Package) controls the
yarn deposit on the package,
in order to eliminate patterning
defects and optimise downstream
processes, mainly used
for wool and delicate yarns.
The yarn layering is controlled
through the variation of the
drum-package speed ratio,
every time a critical diameter is
reached. A special step motor
modifies the drum-package position
in order to ensure that the
relative distance of the wound
coils is maintained.
Finally, the CAM system
(Computer Aided Metering)
ensures accurately the yarn
length on the package. The
request for a reduction in yarn
remnants in a downstream
processes, requires that the
packages produced contain an
extremely precise yarn length.
The resulting savings are
particularly welcome in case
of added value yarns, such as
wool, cashmere and silk. The
combination of the laser detector
with the package and drum
sensors is managed by the
machine’s PC. This measuring
system is totally independent of
the yarn structure, shape, evenness
and hairiness.