88242361-04-01 Vol 1 DEK TQ TECHNICAL REFERENCE (1) - 第135页
8 SQUEEGEE MODULE 8.4 CALIBRATIONS TECHNICAL REFERENCE MANUAL DEK TQ 04/2021 135 13. Ensure that the force gauge (4) is secured to the test jig mounting plate (2) using two securing screws (3). 4 2 1 3 5 14. Raise the re…
8 SQUEEGEE MODULE
8.4 CALIBRATIONS
134 TECHNICAL REFERENCE MANUAL DEK TQ 04/2021
8.4 CALIBRATIONS
8.4.1 Squeegee Load Cell
WARNING
BOARD CLAMPS. EXTREME CARE MUST BE EXERCISED WHEN WORKING IN
THE TOOLING AREA OF THE MACHINE TO AVOID INJURY. THE FOILS ON THE
FRONT AND REAR BOARD CLAMPS ARE VERY SHARP.
Squeegee pressure calibration is carried out on machines after the following circumstances:
●
The squeegee mechanism is replaced
●
The strain gauge bridge in the squeegee mechanism is replaced
●
On suspicion that the squeegee pressure is incorrect.
A force meter calibration jig and pressure plate are required to perform the squeegee pressure cali-
bration.
Use the following procedure to calibrate the squeegee pressure:
1. Select Unload Stencil.
2. Open the front cover.
3. Remove the stencil.
4. Remove the squeegees.
5. Remove the tooling from the tooling table.
6. Close the front cover.
7. Press the System button.
8. Select Menu.
9. Select Service\Calibration.
10. Select Squeegee Load Cell.
The conveyors are checked for the presence of a board, the print carriage moves to the cali-
bration position, the rear conveyor is driven to 200mm
board width and the table homes.
The Front and Rear Squeegee Load Cell Calibration screens are displayed.
11. Select Calibrate Front.
12. Open the front cover.
8 SQUEEGEE MODULE
8.4 CALIBRATIONS
TECHNICAL REFERENCE MANUAL DEK TQ 04/2021 135
13. Ensure that the force gauge (4) is secured to the test jig mounting plate (2) using two securing
screws (3).
4
2
1
3
5
14. Raise the retractable front squeegee mount nuts (1).
15. Fit the calibration jig to the front squeegee mounting foot.
16. Fit the squeegee pressure plate (1) to the tooling table (3) ensuring that both locating dowels
(2) are inserted into the holes at the front of the tooling table.
1
2
3
17. Switch the force meter ON and check the reading is 0kg.
18. Close the front cover.
19. Press the System button.
20. Select Confirm.
The squeegee steps down until the pressure value stored on the machine is reached. The
screen displays the first Load Cell Calibration Point value(1kg).
21. Switch on the internal light.
8 SQUEEGEE MODULE
8.4 CALIBRATIONS
136 TECHNICAL REFERENCE MANUAL DEK TQ 04/2021
22. Use the left and right jog buttons to move the squeegee up or down until the calibration jig dis-
plays the same value (± 0.1Kg) as that shown on the screen. Achieving the exact value may
not be possible.
NOTE
For improved accuracy, all calibrations should be made by adding pressure. If the gauge
value exceeds the requested calibration value, raise the jig and re-apply pressure starting at a
value below the requested value.
23. Select Accept and Continue.
24. Repeat Steps 22 and 23 for the next four Load Cell Calibration Points (4kg, 8kg, 11kg and
21kg).
Once the last calibration point is complete, the new calibration data points are added to the
squeegee load cell pressure calibration chart, allowing a visual comparison with previously
stored values. Selecting individual data points displays an overlay listing values for that points
previous and current calibrations.
25. Select Calibrate Rear.
26. Open the front cover.
27. Remove the calibration jig from the front squeegee position.
28. Retract the front squeegee mounting nuts (1).
29. Using the rear mounting nuts (5), fit the calibration jig to the rear squeegee mounting foot.
30. Close the front cover.
31. Press the System button.
32. Select Confirm.
The squeegee steps down until the pressure value stored on the machine is reached. The
screen displays the first Load Cell Calibration Point value (1kg).