03217917-01-01E By DEK Technical Reference Manual Vol 1_enPDFA - 第167页

11 SQUEEGEE MODULE 11.4 CALIBRATIONS TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 167 (Fwd Press Flood) (Rear Press Flood) (Flood Ref. Height) (Front Ref. Height) (Rear Ref. Height) 33.1004 31.9668 3951.6971 3947.70…

11 SQUEEGEE MODULE

11.4 CALIBRATIONS

166 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019

► Press the System button.

► Select Continue.

► The following machine sequence is carried out:

●

The rails are checked for the presence of a board.

●

The rising table is driven to print height.

●

The board clamps are closed.

●

The print carriage drives the front squeegee over the front rail; see note.

●

The rear squeegee is driven down to dwell height.

●

The front squeegee is driven down by the stepper motor until contact with the board clamp is

made.

●

The front squeegee continues to be driven down until a 2kg pressure difference is detected,

the motor pauses.

●

The amount of steps (the stepper motor took to get to this position) and the pressure are re-

corded.

●

The stepper motor drives downwards another 15 steps, this is recorded with the pressure de-

tected. This is repeated a further 18 times to achieve a total of 20 results.

NOTE

If the incorrect squeegees are fitted or are poorly fitted the squeegees cannot be calibrated. A

panel is displayed warning the user to check the squeegees.

► The rear squeegee is calibrated in a similar manner.

► The message ‘Calibrate Squeegee heights complete’ is displayed.

► Select Back.

► Select Maintenance.

► Select Test Cycles.

► Select Data Logging Off.

► Select Back.

11.4.2.1 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 file carry out the fol-

lowing procedure:

► From the Windows start menu, select Programs - Accessories - WindowsExplorer.

► Under My Computer, locate and open the E:\Log\Ptest.dat file.

The following figure gives a representation of the Ptest.dat file.

11 SQUEEGEE MODULE

11.4 CALIBRATIONS

TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 167

(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

19.640694

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.

11 SQUEEGEE MODULE

11.4 CALIBRATIONS

168 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019

11.4.3 Squeegee Reference Height (Non Pressure Feedback)

The squeegee reference height is carried out after a squeegee change on machines without the

Pressure Hardware option. This procedure must be used if Pressure Hardware is disabled.

Use the following procedure to set the squeegee reference height:

► Select Open Cover Commands.

► Select Carriage To Front.

► Select Unload Screen.

► Open the printhead cover.

► Remove the stencil from the machine.

► Fit the required squeegees to the front and rear squeegee mounts as detailed in 11.3.2 "Fitting

the Squeegees" [}161].

► Close the printhead cover.

► Press the System button.

► Select Back.

► Select Setup Product.

► Select Squeegees.

► Select Calibrate Heights.

► The following machine sequence is carried out:

●

The rails are checked for the presence of a board.

●

The rising table is driven to print height.

●

The board clamps are closed.

●

The print carriage drives the front squeegee over the front rail.

●

The front and rear squeegees are driven down by the stepper motor to dwell height.

Calibrate Front Squeegee

► Select Calibrate Front Squeegee.

► The front squeegee is driven down to the current reference height position.

► Select Jog.

► Open the printhead cover.

► Using a 0.1mm shim placed between the front rail and the front squeegee, check that the

shim moves with a small amount of friction.

► If the gap is correct, go to Calibrate Rear Squeegee.

► For adjustment, select the appropriate Jog Up/Jog Down button on the monitor.

► Using the two button controls simultaneously, jog the squeegee in the chosen direction.

► Recheck the gap.

► Repeat previous three steps until the correct gap is achieved.

Calibrate Rear Squeegee

► Close the printhead cover.

► Press the System button.

► Select Back.

► Select Save.

► Select Calibrate Rear Squeegee.

► The rear squeegee is driven down to the current reference height position.

► Repeat the Calibrate Front Squeegee steps for the rear squeegee.

► Select Back.