Galaxy EX Squeegee Module.pdf - 第29页

SQUEEG EE MODULE CALIBRATIONS Ch apte r Issue 4, J un 18 Tech nical R efere nce Ma nual 10. 29 8. Select S queegees . 9. Select Unloa d Screen . 10. Open the f ront printh ead cover . 1 1. R emo ve the sc ree n fro m th …

100%1 / 30
SQUEEGEE MODULE
CALIBRATIONS
10.28 Technical Reference Manual Chapter Issue 4, Jun 18
16. Fit the squeegee pressure plate to the rising table ensuring that the locat-
ing dowels insert the holes of the rising table.
NOTE
During the squeegee pressure calibration the dwell height of the rear
squeegee is 15mm regardless of the set up value. This height is set during
calibration only.
17. Switch the force meter ON and check the reading is 0kg, (ensure the force
meter is not in contact with the squeegee pressure plate).
18. Select Continue.
19. The front squeegee mechanism steps down until a change in pressure is
detected and continues stepping down until the pressure value stored on
the machine is reached. If the calibration jig displays 10kg, go to Step 25.
20. Select Jog Rig.
21. Use the left and right jog buttons to move the front squeegee mechanism
up or down until the calibration jig displays 10kg.
NOTE
Achieving exactly 10kg may not be possible as some calibration jigs display
down to three decimal places.
22. Select Set Calib.
23. Select Exit.
24. The front squeegee mechanism moves to the home position. The mes-
sage ‘Confirm that the pressure calibration jig has been removed.’ is
displayed.
25. Remove the calibration jig and the squeegee pressure plate from the
machine. On completion select Yes, the table resets, the print carriage
moves to home position, board clamps open and the rear rail moves to the
board width setting.
26. Carry out the Squeegee Reference Height calibration.
Squeegee
Reference Height
Squeegee reference height is carried out on machines after the following
circumstances:
• Squeegee pressure calibration
• Squeegee change
Use the following procedure to set the squeegee reference height:
1. If a Ptest.dat file is not required, go to Step 7.
2. Select Maintenance.
3. Select Test Cycles.
4. Select Data Logging On.
5. Select Back.
6. Select Back.
7. Select Setup Product.
SEMI 2
SQUEEGEE MODULE
CALIBRATIONS
Chapter Issue 4, Jun 18 Technical Reference Manual 10.29
8. Select Squeegees.
9. Select Unload Screen.
10. Open the front printhead cover.
11. Remove the screen from the machine.
12. Close the front printhead cover.
13. Press the System button.
14. Select Calibrate Heights.
15. The message ‘Ensure that the correct squeegees are fitted!’ is dis-
played.
16. If the correct squeegees are fitted, select Continue.
The following machine sequence is carried out:
a. The rails are checked for the presence of a board.
b. The rising table is driven to print height.
c. The board clamps are closed.
d. The print carriage drives the front squeegee over the front rail.
e. The rear squeegee is driven down to dwell height.
f. The front squeegee is driven down by the stepper motor until contact
with the board clamp is made.
g. The front squeegee continues to be driven down until a 2kg pressure
difference is detected, the motor pauses.
h. The amount of steps (the stepper motor took to get to this position) and
the pressure are recorded.
i. The stepper motor drives downwards another 15 steps, this is
recorded with the pressure detected. This is repeated a further 18
times to achieve a total of 20 results.
17. The rear squeegee is calibrated in a similar manner.
18. The message ‘Calibrate Squeegee heights complete’ is displayed.
19. Select Back.
20. Select Back.
21. Select Maintenance.
22. Select Test Cycles.
23. Select Data Logging Off.
24. Select Back.
25. Select Back.
Ptest.dat File The file displays 20 front squeegee readings followed by 20 rear squeegee
readings, showing the relationship between steps (displacement) and
pressure applied. From the readings taken, the front and rear pressure factors
and squeegee reference heights are calculated. At the end of the file, 5
readings of flood pressure and reference height readings are displayed (these
are also listed in the Config.txt file).
The Ptest.dat file is located on the hard drive of the machine PC. To view the
SQUEEGEE MODULE
CALIBRATIONS
10.30 Technical Reference Manual Chapter Issue 4, Jun 18
file carry out the following procedure:
1. From the Windows start menu, select Programs - Accessories - Win-
dows Explorer.
2. Under My Computer, locate and open the E:\Log\Ptest.dat file.
The figure below gives a representation of the Ptest.dat file.
(Fwd Press Flood) (Rear Press Flood) (Flood Ref. Height) (Front Ref. Height) (Rear Ref. Height)
33.1004 31.9668 3951.6971 3947.7037 3935.1178
(steps)
(kg)
Rear Squeegee
4301.000000
4286.000000
4271.000000
4256.000000
4241.000000
4226.000000
4211.000000
4196.000000
4181.000000
4166.000000
4151.000000
4136.000000
4121.000000
4106.000000
4091.000000
4076.000000
4061.000000
4046.000000
4031.000000
4016.000000
22.480215
21.961163
21.503175
21.045188
20.587201
20.068149
1
9.640694
19.182706
18.724719
18.266732
17.747680
17.289692
17.801172
16.343185
15.885198
15.396678
14.908158
14.480703
13.992184
13.564729
Front Squeegee
(steps)
(kg)
4039.000000
4324.000000
22.388617
21.930630
21.472643
21.045188
20.587201
20.129213
19.640694
19.213239
18.694187
18.266732
17.839277
17.350757
16.892770
16.465315
16.007328
15.579873
15.121886
14.724963
14.236444
13.778456
4309.000000
4294.000000
4279.000000
4264.000000
4249.000000
4234.000000
4219.000000
4204.000000
4189.000000
4174.000000
4159.000000
4144.000000
4129.000000
4114.000000
4099.000000
4084.000000
4069.000000
4054.000000
NOTE
Text shown in italics is not
displayed in the Ptest.dat file.