Truetzschler T- SCAN TS-T5 offers unprecedented quality

Truetzschler T- SCAN TS-T5 offers unprecedented quality

Truetzschler T- SCAN TS-T5 ensure high reliability in foreign part separation for enhanced yarn and fabric quality

The presence of foreign matter in yarn and fabric remains one of the most vexatious quality
challenges a textile mill faces. An impurity that
creeps in in the fibre stage can create a series of
problems at every further processing stage. Only a small
amount of foreign matter can impact a large quantity of
fabric. That is why spinning mills try to remove foreign
parts as early as possible during the fibre preparation
stage. The automatic detection and ejection of foreign
parts has been steadily evolving over the last decades.
However, it remains especially difficult to detect foreign
parts that are transparent or thin, white, or thread-shaped.

The Truetzschler T-SCAN TS-T5 meets these and other
detection requirements with an unprecedented quality.

T-SCAN modules
Truetzschler uses five modules for the detection of
foreign parts. Each one is specialised to reliably detect
various foreign parts in the fast fibre flow. The reliable
detection of foreign parts provides the basis for reaching
an extremely high separation rate of foreign parts in the
downstream process and simultaneously preventing the
separation of too many good fibres. This unique
Truetzschler technology makes the T-SCAN TS-T5 essential
for the quality formation in the blow room.

In addition to
colour, 4-CCD
T-SCAN cameras
can also detect
shininess.

Different T-Scan modules
F-module detects coloured parts (1)
Truetzschler uses internally
developed T-SCAN cameras with high
resolution and scanning rates. The
flow of cotton tufts is continuously
monitored from both sides with reliable detection of even
small coloured foreign parts.

G-module detects shiny parts(2)
Many foreign parts show no
contrast to cotton, but they reflect
light because they are shiny. The
Truetzschler gloss module uses this
effect. Two T-SCAN cameras detect
parts from two sides that differ in
their shininess from cotton. To detect smallest shiny
foreign parts, this module works at high resolution and
scanning frequency.

P-module detects transparent and semi- transparent parts (3)
The Truetzschler P-module detects
transparent and semi-transparent
parts, regardless of their colour. To
achieve this, the patented method
uses polarised transmitted light. If the
cotton contains transilluminable foils, packaging residues
from PP fabric and similar parts, they are reliably detected
by this module.

UV-module detects fluorescent part (4)
Some cotton sources contain foreign
parts that have a fluorescent glow in UV
light. Even parts that are difficult to
detect, e.g. bleached cotton, PES or
fluorescent PP strips, are reliably
detected by the Truetzschler UV-module.

LED lighting detects thin thread-shaped parts(5)
After a few months – invisible to the
eye – the fluorescent tubes of common
foreign part separators lose the light’s important
proportion of blue, which is crucial for colour detection of
foreign parts. By contrast, 1,072 high-performance LEDs
with just as many focused lenses work in the T-SCAN TS-T5.
The high light intensity allows the use of cameras
featuring increased resolution and scanning frequency. To
ensure that the light intensity is maintained in the long
run, it is monitored and independently readjusted.

The machine control performs a number of
optimisation functions on request or permanently:

Intelligent waste prevention
Cotton tufts of different colour, trash, stem parts or leaf
fragments are also foreign parts. These, of course, are
detected as well. However, waste prevention optimisation
eliminates high separation rates. It is better and safer to
remove such parts on the card. A separation on the T-SCAN
would result in unnecessary fibre loss. Naturally, the
separating sensitivity can be adapted to the cotton quality
The separation of such parts should be handled by the
card

Reduced loss of good fibres and lower air requirement
The controlled flow in the
flat and wide fibre channel
distributes the tufts evenly
over the width. The selective
response of one of the 48
valves ensures that only a
minimum number of good
fibres is separated. Compared
to other systems, this results
in annual material savings of
Rs 15,00,000-Rs 37,00,000.

The permanent speed
measurement of the tuft flow
also makes it possible to
reduce the response time of
the nozzles to a minimum. As a result, the compressed air
requirement is only approximately 20% of that of other
systems.

Truetzschler speed sensors minimise the compressed
air requirement and fibre loss. The nozzle beam with 144
tiny nozzles

Reducing cleaning to a minimum
The Truetzschler
T-SCAN is very
effectively sealed
against penetration
of dust. Compared
to other systems, it
requires
substantially less
cleaning. Thus, downtimes are reduced by more than 80%.

Minimal maintenance
Standard fluorescent tubes permanently lose their
intensity in the blue light range. They must be replaced
approx. after 6 months, otherwise the separation
effectiveness declines. The Truetzschler LED module with
2×536 LEDs is monitored and readjusted as needed. This
self-optimisation function ensures a constant light
intensity.

Every downtime means a production loss and a restart
of blow room and cards. The Truetzschler T-SCAN runs for
approximately one week without having to be cleaned.
Other systems must be cleaned daily or sometimes even
once per shift. Due to the increasing contamination, their
separation effectiveness declines as well.

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