00197787-02_SI_SIPLACE_HeadVerification_EN - 第39页

6 Description of the test results 6.2 Air & vacuum with head sensor Software Manual SIPLACE Head Verification 03/2018 39 14 Result view indicating if the values are within (green tick) or outside (red cross) the limi…

6 Description of the test results

6.2 Air & vacuum with head sensor

38 Software Manual SIPLACE Head Verification 03/2018

Fig.34: Result view – Air & vacuum with head sensors 2/2

See the legend below for details of both images:

1 Measured Segment

2 Values of the Vacuumopen measurement with open calibration nozzle.

3 Values of the Vacuumclosed measurement with the calibration nozzle touching the con-

veyor rail (endurance run unit).

4 Vacuum delta shows the difference between Vacuumopen and Vacuumclosed:

Vacuumdelta = Vacuumopen – Vacuumclosed

5 Open dev. shows the difference between Vacuum open of each segment and the Mean

Vacuum open:

Opendev. = Vacuumopen

– Vacuumopen

Median

6 Values of the Holdingcircuit measurement with open calibration nozzle.

7 Values of the Vacuum measurement at an angle of 0°, 90°, 180° and 270° with the cali-

bration tool picked up.

8 Delta vac. shows the difference between the smallest and the largest value of the Va-

cuum 0°, 90°, 180° and 270° measurements:

Deltavac. = Vacuum(0°, 90°, 180° 270°)

max

– Vacuum(0°, 90°, 180° 270°)

min

9 Values of the Vacuumcalibpart measurement with the calibration tool picked up.

10 Delta vac. shows the difference between Vacuumcalibpart and Vacuumclosed:

Deltacalib-closed = Vacuumcalibpart – Vacuumclosed

11 Calib part dev shows the difference Vacuum calib part of each segment and Mean Va-

cuum calib part.

Calib part dev = Vacuum calib part

– Vacuum calib part

Mean

12 Value of the Air blast measurement with an air blast of 200mbar applied to the segment.

13 Value of the Vacuumzero measurement with the air blast switched off.

6 Description of the test results

6.2 Air & vacuum with head sensor

Software Manual SIPLACE Head Verification 03/2018 39

14 Result view indicating if the values are within (green tick) or outside (red cross) the limits.

15 Graph showing the Vacuumopen values for each segment.

16 Graph showing the Vacuumdelta values for each segment.

17 Graph showing the Holdingopen values for each segment.

18 Graph showing the Vacuumcalibpart values for each segment.

19 Graph showing the Air values for each segment.

6.2.3 Interpretation of the results obtained

‘Vacuum open’ / ‘Vacuum delta’ error for all segments

Cause Solution

Vacuum pump defective ► Maintain the vacuum pump or replace it.

Seal (four-hole rubber disk) for holding circuit

not fitted correctly or damaged

► Check the seal position or replace it.

Holding circuit polluted ► Maintain or clean the holding circuit in an

ultrasound bath.

‘Vacuum open’ / ‘Vacuum delta’ error for individual segments

Cause Solution

Filter disks sealing damaged / poor air-tightness

at the nozzle seating

► Replace the filter disks.

Nozzle worn or damaged ► Replace the nozzle.

Vacuum hose to the affected segment polluted

or damaged

► Replace the vacuum hose.

Holding circuit polluted ► Maintain or clean the holding circuit in an

ultrasound bath.

‘Delta vac. 0-270°’ error for individual segments

Cause Solution

Segment (DP) defective or without planarity to

the nozzle contact surface

► Replace the segment (DP).

Internal segment (DP) vacuum cycle defective ► Replace the segment (DP).

6 Description of the test results

6.3 Air & vacuum with external sensor

40 Software Manual SIPLACE Head Verification 03/2018

6.3 Air & vacuum with external sensor

6.3.1 Measurement principle

This measurement is used to determine the vacuum and air blast quality of the placement head

and its segments by an external sensor. Several tests are performed to verify the different aspects

of the vacuum system, and also to compare the achieved results with the results that are achieved

from the test with the internal sensor.

1. The vacuum is measured with the internal sensor and the segment closed, and then with the

segment open at the external sensor.

2. Finally, the air blast is activated and measured with the internal sensor, and then with the seg-

ment at the external sensor.

6.3.2 Measurement result

Fig.35: Result view – Air & vacuum with external sensor

1 Measured Segment

2 Values of the Air external measurement using the external sensor.

3 Values of the Air head measurement using the internal sensor.

4 Delta air shows the difference between Air external and Air head:

Delta air = Air head - Air external

5 Values of the Vacuum external measurement using the external sensor.

6 Values of the Vacuum head measurement using the internal sensor.

7 Delta vacuum shows the difference between Vacuum external and Vacuum head:

Delta vacuum = Vacuum head - Vacuum external

8 Vacuum zero shows the difference between Median

Vacuum external

and Vacuum external:

Vacuum zero = Median

Vacuum external

- Vacuum external