00197787-02_SI_SIPLACE_HeadVerification_EN.pdf - 第36页
6 Description of the test results 6.1 Air & vacuum checks 36 Software Manual SIPLACE Head Verification 03/2018 1 Results for the individual measurements ● Vacuum values using the head sensor with the segment open and…
6 Description of the test results
6.1 Air & vacuum checks
Software Manual SIPLACE Head Verification 03/2018 35
6 Description of the test results
The following chapters describe the detailed result of each measurement. The screenshots used
are only examples which may differ depending on the verified head type.
6.1 Air & vacuum checks
6.1.1 Measurement principle
The Air & vacuum checks are used to determine the vacuum and air blast quality of the place-
ment head. Several tests are performed to verify the different aspects of the vacuum system using
the head and the external vacuum sensor.
●
Test of the vacuum system without nozzle.
●
Test of the vacuum system with the segment open and closed using the head sensor and the
external sensor.
●
Test of the air blast system with head sensor and the external sensor.
●
Test of the time required for the vacuum to build up.
6.1.2 Measurement result
Fig.32: Result view – Air & vauum checks
6 Description of the test results
6.1 Air & vacuum checks
36 Software Manual SIPLACE Head Verification 03/2018
1 Results for the individual measurements
●
Vacuum values using the head sensor with the segment open and no nozzle at-
tached.
●
Vacuum values with the segment open and closed using the external sensor and a
517 nozzle attached.
●
Air blast values with the segment open and closed using the external sensor and a
517 nozzle attached.
●
Rise time determined how fast vacuum is built up.
●
Check of the vacuum sensor functionality.
2 Graph showing the rise time to max vacuum.
6.1.3 Interpretation of the results obtained
‘Vacuum head sensor’ OK / ‘Vacuum external sensor’ error
Cause Solution
Blockage in the vacuum circuit ► Check / exchange the tubes.
► Check / exchange the pneumatic rotary supply.
‘Vacuum head sensor’ error / ‘Vacuum external sensor’ OK
Cause Solution
Vacuum head sensor defective ► Replace the PRV.
6 Description of the test results
6.2 Air & vacuum with head sensor
Software Manual SIPLACE Head Verification 03/2018 37
6.2 Air & vacuum with head sensor
6.2.1 Measurement principle
The Air & vacuum with head sensors measurement is used to determine the vacuum and air
blast quality of the placement head and its segments. Several tests are performed to verify the dif-
ferent aspects of the vacuum system:
1. Test of the vacuum circuit in the placement position. The vacuum is measured twice, at first
with the segment open and the nozzle unblocked and then with the nozzle positioned at the
conveyor (endurance run unit). Both values are then compared to each other.
2. Test of the holding circuit with the nozzles unblocked.
3. Retest of the vacuum circuit in the placement position. The vacuum is measured for each seg-
ment with the calibration tool picked up in the top and bottom position.
4. Test of the air blast function.
6.2.2 Measurement result
Fig.33: Result view – Air & vacuum with head sensors 1/2