The
device has been newly developed for the contactless wall thickness
measurement of container glass.
Insert
Quality control at the Cold
End Measurement of hot containers directly after forming.
Tasks
Wall thickness measurement
at the circumference of the container.
Display of the measuring
values
- digital display of
the minimum
- graphic display of
the thickness profile
- display of minimum,
maximum and average
- display of the
thickness profile of a sample
- monitoring of the
tolerance limits
Display of the area having
the smallest thickness.
Contactless
Measuring Principle
The device works
contactless. A light line is projected onto the glass surface. The
reflections at front and rear side of the glass are displayed on CCD
line sensors and their distances are evaluated.
Structure and
Operation
The device consists of a
measuring gauge head, measuring electronics as well as the adjustments
for positioning of the gauge head.
The bottle is put on a
turning plate and centered by using a lever. After pressing the start
button the bottle is turned once within 4 seconds.
The adjustment after job
change isn't complicated at all and carried out within minutes. The
measuring height is adjusted by using the motor drive. The distance and
inclination of the sensors to the container surface are adjusted
manually.
Benefits
Quality : By
means of the features location and value of the smallest thickness, the
wall thickness profile can be equalized for every section of the IS
machine. That way, quality is produced.
Time profit: The
quality feature of the thickness profile can be criticized immediately
at the hot container. The transportation time through the lehr is saved.
Working protection:
There is clearly less danger of injuries compared with conventional
methods.
Precision: The
measuring accuracy of the device toward mechanical measuring keys is 0.1
mm. The ability to reproduce is 0.01 mm. Measurement in the range of
label protection as well as engravings are possible.
References
Wiegand Glas Gro©¬breitenbach,
Germany
Oberland Glas Wirges,
Germany
Oberland Glas Bad Wurzach,
Germany
Ritzenhoff Cristal, Germany
VIDRALA Llodio, Spain
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TM (C) off-line for spot check at
the Hot End,
installed on a moveable carriage.
Display of the
results on a LCD monitor after measuring a bottle.
Display of the
results at the LCD monitor after measuring a number of bottles. Each
vertical line shows the thickness range (max - min) of a bottle.The
effect of adjustments are clearly to see from the operator.
Parameters
Measuring
range
0.4 ... 5.0 mm
Accuracy
0.1 mm ( compared with
mechanic instruments)
Ability
to reproduce
0.01 mm
Measuring
frequency
2000 measurements per
second
Testing
speed
approx. 4 seconds
measuring time for one container
Sensor
dimensions
335 * 295 * 45 mm (height
* depth * width)
Sensor
cooling
air cooling, internal fan
Dimensions
total system
870 * 600 * 900 mm
(height * depth * width)
Measuring
distance
35 mm
Distance
tolerance
+/- 4 mm
Outputs
numerical display, 3
digits
Service
functions
LCD - display for
profiles and trends
LED bar-graph for gauge
head distance
display the region having
the smallest thickness
marked in angular degrees
on the rotation table
Measuring
principle
double reflection method
Light
source
Halogen lamps, 6 months
continuous operation
Sensor
system
two reverse direction ray
system |
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