Important Notes For Machine Manufacturers - Roland R4000 Manual

System description
The following table shows how the number of discarded tubes and the number of
wrong positioned tubes are influenced by the tube class and the chosen sort-out-threshold:
Tube class*
Sorting-out
threshold
Ultra
Good
Satisfactory
1) Possibility that the position of the weld seam can not be detected with sufficient certainty. With
the signal "reduced detection capability" the discarding starts.
2) Possibility that a tube is stopped at wrong position.
*Tubes with a high dB-value are „good detectable", tubes with a low dB-value are
„bad detectable".
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2.4

Important notes for machine manufacturers

The following components have decisive influence on the function of the system:
•
the rotation device for the tube
•
Bending mandrels within the tube
•
the positioning device for the sensor
•
the clamping device for the tube
•
the unloader device for the tube
•
•
2.4.1.1 Rotation device and drive
The main requirements are:
stable tube holder
•
slip-free drive of the tube
•
constant rotation speed on the tube
•
low starting time of the drive
•
stopping behaviour of the drive or the constant brake
•
A stable tube holder means a device that takes the tube reproducibility and allows a smooth
multiple rotation of the tube.
Here, the weld seam sensor should not be carrying part of this device. Often, the tube drive is
designed so that it forms the tube receptacle.
18
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
Weld Seam Detection System R4000 SND40
for Tubes, Cans and Drums
Risk of critical detection
Good detectable
Note Please also refer to chapter 2.7 „Measures for improvement of
Weld Seam Detection"
Manual
1)
Risk of wrong positioning
Bad detectable Good detectable
B0059001 / Rev. 2.3
2)
Bad detectable