Page 39 - Glass Machinery Plants & Accessories no. 2-2019

The LBC head is the
Tiama art GM2.indd
latest enhancement
in glass thickness
measurement
for Tiama and a
real step toward
reliable and trustful
detection of thin
defects. And being
‘Smart’ will allow
glassmakers to
prevent any type of
container rejection,
improving global
production line
efficiency.
Damien Defenouillère
Carousel Product Engineer
TIAMA
the widest chromatic confocal
thickness detector of the market
in the thinnest probe (only 45
millimetres high). This reduced
vertical footprint combined with
the possibility of mixing up to
four heads on the same system,
among which three large band
devices, offers a huge vertical
coverage of 34 millimetres reduc- extreme flexibility makes this sys-
ing considerably the risk of miss- tem equally efficient with odd
ing any thickness defect.
SURFACE ANALYSIS
The concept of the LBC probe
is to offer to customers the possi- hosted in any carousel machine
bility to set the equivalent of eight
very well-known Chroma-20
probes in an extremely reduced
footprint. The combination of
these eight close signals, sprayed
on an 11-millimetre band, allow
glass machinery plants & accessories 2/2019
37
to track the thickness defects
even if they slightly deviate from
their original position. Moreover,
the association of these measure-
ments allow a surface analysis
and therefore an extremely pre-
cise mapping of the glass distri-
bution in the inspected area. The
thickness measurement is not
anymore a basic “GO/NO GO”
control. The surface concept
allows a more accurate filtering
of large and consistent defect
versus tiny thin spots that might
be acceptable up to the final cus-
tomer. The thickness threshold is
obviously part of the reject deci-
sion but the LBC (as the LBT
before it), also considers the area
of glass under this said threshold
to make its decision.
EXTREME VERSATILITY
The LBC has been designed in
order to respond to customers’
constraints. Its adjustment has
been thought to be the easiest,
proposing a large nominal work-
ing distance of 65 millimetres
and a wide measuring range, up
to 20 millimetres. Those param-
eters allow to set the probe at
the same height as the article
rotation, increasing the possi-
ble thickness measurement cov-
erage. Due to this significant
working distance, risks of shocks
and damages are reduced and
consequently this will reduce the
maintenance operations. In addi-
tion, the horizontal tolerance of
+/-15° is converting the adjust-
ment shortly and easily. This
shape containers as it is with
round ones.
The flexibility of the LBC also
lies in the fact that it can be
of the market, by the UTM sys-
tem. This Universal Thickness
Measurement device allows,
through powerful homemade
dedicated processing boards, to
welcome on the same base any
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