80S-15贴片机 - 第461页

10 Si plac e G au tom atic g lue ap plic ator SIPLA CE 80 S/80 F/G Servi ce Ma nua l Ed itio n 06 /98 10 - 40 ● Move the gluing hea d holder to the minimum positio n. Fig. 10 .3.5 Overview : T ensionin g the toot hed bel…

10 Siplace G automatic glue applicator SIPLACE 80S/80F/G Service Manual

Edition 06/98

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10.3.4.3 Adjusting the dispensing pressure sensor

Fig. 10.3.4 Test set-up: Adjusting the dispensing pressure sensor

Key to Fig. 10.3.4

1 Dispensing pressure line

2 Quick-release coupling for the pressure chamber

3 Glue head conversion board Y0052

4 Adapter hose (prepare as shown in drawing)

a Test point TP1 (heat exchanger signal)

b Potentiometer R27 (0V temperature sensor setting; 15

c Potentiometer R26 (5V- temperature sensor setting; 40

d Potentiometer R38 (0V setting; ambient pressure)

e Potentiometer R37 (dispensing pressure sensor setting for Pmax)

f Test point TP2 (dispensing pressure sensor signal)

g Test point TP3 ⊥ (ground)

h Jumper block JP1 (replace jumper on pin 5/6 after adjustment)

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PLEASE NOTE

Prepare an adapter hose made of a ∅ 3 mm PU hose approximately 70 mm long, a ∅ 3 mm to ∅ 4 mm reduc-

ing adapter (metal) and a ∅ 4 mm PU hose approximately 70mm long (see Fig. 10.3.4, item 4).

Preparation:

● Load the SIKLEBER test program. Please read the warnings at the start of this chapter.

● Switch the control on.

● Detach the dispensing pressure line (Fig. 10.3.4, item 1) from the quick-release coupling of the pressure

chamber (Fig. 10.3.4 item 2). Insert the ∅ 3 mm end of the adapter hose into the quick-release coupling of

the pressure chamber.

PLEASE NOTE

When you insert air hoses into quick-release connections, ensure that you push them in as far as the sec-

ond perceptible stop.

● A digital voltmeter is used to adjust the dispensing pressure sensor. Set the voltmeter to a measuring

range of 20 V DC.

● Connect the test cable of the voltmeter as follows:

Connect the positive cable to TP2 on board Y0052 (= gluing head board of the glue application head to be

adjusted, see Fig. 10.3.4). Test point 2 is used for the dispensing pressure sensor IC 5.

Connect the negative cable to TP 3 on the same board (Y0052). (Test point 3 is the ground terminal).

● Select the "Dispens. control" menu, followed by "Gluing dots" and then "Adjust pressure" to set the dis-

pensing pressure. Use the arrow keys ↑ and ↓ to change the pressure. Set the pressure to 5.115 bar and

then press the ESC key to accept the setting.

● Select the "Dispens. control" followed by "Gluing head 1" or 2/3 to select the glue application head with the

dispensing pressure sensor to be adjusted.

Adjustment:

● Do not close the open end of the adapter hose (= ambient pressure of 0 bar).

● Use potentiometer R38 (left potentiometer) on board Y0052 to set the signal at TP2 to 0 V (tolerance ± 20

mV). The adjusted 0 V voltage corresponds to a pressure of 0 bar.

● Connect the ∅ 4 mm side of the adapter hose to connector B (overpressure) of the compressed air testing

device.

● Select the "Dispens. indefinitely (apply as required)" menu to switch on the pressure in the dispensing

chamber (5.115 bar). Press the spacebar once to pressurize the pressure chamber. Press the spacebar

again to depressurize.

● Calculate the voltage using the following formula:

5.0 V

x measured pressure in bar = voltage to be set

5.115 bar

● Use potentiometer R37 (right potentiometer) on board Y0052 to set the signal at TP2 to the calculated volt-

age. Press the spacebar to depressurize the valve chamber.

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● Remove the adapter hose from the quick-release coupling in the pressure chamber (Fig. 10.3.4 item 2)

and reconnect the original hose (Fig. 10.3.4 item 1).

● Adjust the dispensing pressure sensors on the other glue application heads if necessary.

10.3.4.4 Checking the seals of the dispensing pressure unit

PLEASE NOTE

It is only necessary to check the seals if the dispensing pressure unit has been dismantled (e.g. after replac-

ing the dispensing valve or air relief valve). During the seal test, a constant pressure must be measured in the

pressure chamber over a period of five minutes. After five minutes, the maximum pressure loss must not

exceed 10 % of the initial value.

The constant pressure may be measured using either a voltmeter or a manometer. Both methods are

described below.

● Initial situation: The dispensing pressure unit is connected to the air and power supplies, but is not yet

screwed to the glue application head.

● Load the SIKLEBER test program. Please read the warnings at the start of this chapter.

● Switch the control on.

● For the pressure measurement with a manometer only: Connect the manometer to the dispensing pres-

sure line of the dispensing pressure unit. The connection must be absolutely airtight.

The next two steps relate to pressure measurement with a voltmeter and may be skipped.

● Seal the dispensing pressure line on the dispensing pressure unit (the dispensing pressure line is the air

line leading to the cartridge). To do this, insert a dummy hose or similar into the quick-release coupling of

the pressure chamber. The connection must be absolutely airtight.

● Set a voltmeter to a measuring range of 20 V DC. Connect the test cable of the voltmeter as follows:

Connect the positive cable to TP2 on board Y0052 (= gluing head board of the dispensing pressure unit to

be tested, see Fig. 10.3.3). Connect the negative cable to TP 3 on the same board (Y0052).

● Select the "Dispens. control" menu and then "Gluing head 1" or 2/3 to select the glue application head of

the dispensing pressure unit to be tested.

● Select the "Valve functions" menu and then the "Release pressure" option to vent the dispensing pressure

unit. Press Return to vent the unit. The voltmeter or manometer must display the following value: 0 V (tol-

erance + 20 mV) or 0 bar (tolerance + 0.02 bar).

PLEASE NOTE

If the voltage is outside the tolerance specified above after venting the dispensing pressure unit, the dis-

pensing pressure sensor must be adjusted as described in the previous section.

● Select the "Dispens. control" menu, followed by "Gluing dots" and then "Adjust pressure" to set the dis-

pensing pressure to 5.115 bar (maximum dispensing pressure). Use the arrow keys ↑ and ↓ to change the

pressure. Then press the ESC key.

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● Switch on the dispensing valve of the dispensing pressure unit by activating the top manual control of the

dispensing valve. The pressure chamber will then be pressurized.

● Switch the dispensing valve over by activating the right manual control of the dispensing valve with a thin

steel plate. This will “enclose“ the pressure in the pressure chamber. Once you have done this, do NOT

aerate or vent the pressure chamber.

● The voltmeter or manometer must display the following value: 5 V (tolerance ± 20 mV) or 5.115 bar (toler-

ance ± 0.02 bar).

PLEASE NOTE

If the voltage is outside the tolerance specified above after venting the dispensing pressure unit, the dis-

pensing pressure sensor must be adjusted as described in the previous section.

● Wait five minutes. Then read the value from the voltmeter or manometer again. The pressure loss must not

exceed 10 % of the initial pressure.

Minimum value on the voltmeter: 4.50 Volt; minimum value on the manometer: 4.60 bar.

● If the values fall below the values specified above, the dispensing pressure unit must be sealed or

replaced. Then check the seals again.

● If the dispensing pressure unit is airtight, remove the dummy hose or manometer. You will hear any resid-

ual pressure dissipating from the pressure chamber.

● Check the seals of the other dispensing pressure units, if necessary.

10.3.5 Tensioning the toothed belt of the X2/Y2 axis

PLEASE NOTE

The correct belt tension of the toothed belt on the X2/Y2 axis is extremely important for precise positioning. It

is only necessary to set the belt tension if the angle bracket has been released. It is absolutely essential to set

the belt tension after replacing the X2/Y2 axis direct-drive motor.

● Open the protective cover and push the gantry into an easily accessible position. Press an emergency

stop button as well.

● You must dismantle the glue application head in order to tension the toothed belt. Read the instructions on

removing the gluing heads in Section 10.2.3.

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● Move the gluing head holder to the minimum position.

Fig. 10.3.5 Overview: Tensioning the toothed belt on the X2 axis (illustrated without glue application head)

Key to

1 Free hole for moving the idler pulley

2 Test point (half-way along the free belt length)

3 Measuring head (illustrated without the stand)

4 Free end of the belt

5 Fixing screw for the idler pulley

6 Idler pulley

● Attach the belt tension measuring device. Position the measuring head just beside the free end of the belt

(approximately 5 - 20 mm). The test point is around half-way along the free belt length (see Fig. 10.3.5).

● Switch on the belt tension measuring device. If "LO BAT" appears on the display, the battery will have to be

charged first.

● Strike the belt sharply to start it vibrating.

PLEASE NOTE

The belt must not be twisted when you strike it since this would make it wobble as it vibrates. Consequently,

as far as possible, you should strike the belt over the entire width. Use an appropriate tool to strike the belt,

e.g. an Allen key. Do NOT strike the belt with your finger.

● The measurement is indicated on the belt tension measuring device in the form of an audible signal. The

measured frequency appears on the display.

● Tensioning the toothed belt:

● Loosen the fixing screw on the idler pulley (see Fig. 10.3.5).

SIPLACE 80S/80F/G Service Manual 10 Siplace G automatic glue applicator

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● Push a suitable pin (e.g. drift punch or screwdriver) into the free hole in the toothed belt fastener.

● Use the pin to press the idler pulley against the toothed belt (see Fig. 10.3.5). You could also use the

fixing screw to push the idler pulley. At the same time, tighten the fixing screw of the idler pulley once

more.

● Change the belt tension until the required frequency is reached:

182 Hz (for both toothed belts).

CAUTION

The toothed belt can become stretched if it is overtightened. Precise positioning is not possible if the

toothed belt is stretched.

● Remove the belt tension measuring device.

● Mount the glue application head.

● Close the protective cover and release the emergency stop button.

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10.3.6 Adjusting the dynamic behavior of the axes

PLEASE NOTE

- It is only necessary to fundamentally change the dynamic behavior of the axes after certain servicing work,

so check the dynamic behavior before you make any changes.

- Switch the machine on for at least half an hour before you make any adjustments.

- Always adjust the axis boards before adjusting the dynamic behavior of the axes (see Section 10.3.6.1).

Fig. 10.3.6 Test set-up for axis boards

Endemeldung

Aus / Ein

Initialisiert

O - Impuls

Soll - Poti

Kraft - Poti

Schnittstelle für die

Meßbox

1. Achse 1 Analogmasse

2. Achse 1 Geschwindigkeit

4. Ac hse 1 Endemeldung

3. Achse 1 Kraft

5. Achse 1 Spur A

6. Achse 1 Spur B

7. Achse 1 Nullimpuls

8. Achse 2 Anzeigesignal

9. Achse 2 Geschwindigkeit

11. Achse 2 Endemeldung

10. Achse 2 Kraft

12. Achse 2 Spur A

13. Achse 2 Spur B

14. Achse 2 Nullimpuls

15. Achse 3 Anzeigesignal

16. Achse 3 Geschwindigkeit

18. Achse 3 Endemeldung

17. Achse 3 Kraft

19. Achse 3 Spur A

20. Achse 3 Spur B

21. Achse 3 Nullimpuls

22. GND

23. + 5V-

24. +15V-

25. - 15V-

Steckerbelegung

( Meßbox )

Achse 1

Achse 2

Achs e 3

Reset

AUS

EIN

Nullimpuls

Endemeldu ng

Spur A Spu r B Nullimpuls Sollwert Kraft

Ende

Meldung

Positions

Abweich ung

Synchronisierung

0,1 V^

1 Digit

SIEMENS AG

AUT51 - QS

CH1 CH2

Verbindungskabel

BNC-Kabel

Zero pulse

End signal

Connection cable

Test box interface

BNC cable

1. Axis 1 Analog ground

2. Axis 1 Speed

3. Axis 1 Power

4. Axis 1 End signal

5. Axis 1 Track A

6. Axis 1 Track B

7. Axis 1 Zero pulse

8. Axis 2 Display signal

9. Axis 2 Speed

10. Axis 2 Force

11. Axis 2 End signal

12. Axis 2 Track A

13. Axis 2 Track B

14.Axis 2 Zero pulse

15. Axis 3 Display signal

16. Axis 3 Speed

17. Axis 3 Force

18. Axis 3 End signal

19. Axis 3 Track A

20. Axis 3 Track B

21.Axis 3 Zero pulse

22.GND

23.+ 5 V-

24.+ 15 V-

25.- 15 V-

Plug assignment

test box

Initialized

Off/On

Vnom potentiom.

Force potentiom.

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Fig. 10.3.7 Test set-up for servo boards

10.3.6.1 Adjusting the axis boards

Use the SIPLACE axis testing device to set the axis boards.

● Connect the input of the axis testing device to the axis board to be set (see Fig. 10.3.6).

● Connect a digital multimeter to the "v

nominal

" socket on the back of the axis testing device.

● Set the axis selector switch to the axis to be tested.

● Use the "Setpoint" potentiometer on the front of the axis board (see Fig. 10.3.6) to set

0V ±2mV.

● Connect a digital multimeter to the "Force" socket on the back of the axis testing device.

● Use the "Force" potentiometer on the front of the axis board (see Fig. 10.3.6) to set

0V ±2mV.

● Repeat the procedure for all the axes (3 per axis board).

Offset Drehzahlregler

Impulsstrom Isp. über Festwiderstand

Verstärkung P Ant.

Tacho V

Effektivstrom I eff über Festwiderstand

grün = Betriebsbereit

rot = Störung / Tachobruch bei X- und Y - Achse

MP1 Drehzahlsollwert

MP2 Stromsollwert

MP3 Ausgang Stromregler

MP4 Stromgrenzwert extern

MP5 Tachospannung

MP6 Stromistwert

Flügelplatine

gel b

grün

rot

0 V

gelb = I t - Meldung

CH1 CH2

Oszillograph

green

yellow

red

yellow = I²t message

green = standby

red = fault / tacho break on X and Y axis

Wing-type board

Speed regulator offset

P gain

Tacho gai n

Power pulse current lsp over fixed resistance

r.m.s

current over fixed resistance

Oscillograph

MP1 Speed offset

MP2 Current setpoint value

MP3 Current regulator output

MP4 External current threshold

MP5 Tacho voltage

MP6 Actual current value

RC-Filter

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10.3.6.2 Axis settings

Settings for adjusting the offset

Settings for adjusting the speed (potentiometer tacho)

Settings for adjusting the positioning quality (P gain)

Axis X1 Y1 X2 Y2 Z 1-3

Mode 1

4 4

4 4 4

Position deviation

100 100

100 100 10

0 0

0 0 0

Position

200,000 500,000

0 0 0

Tab. 10.3.1 Settings for adjusting the offset

Axis X1 Y1 X2 Y2 Z 1-3

Mode 1 4 4 4 4 4

Position deviation

5 5

2 210

KI 1 1 1 10

Speed

10 10

10 10 4

Acceleration 150 200 100 100 100

Deceleration

150 200

50 50 50

Positioning distance

Waiting time 900ms

100,000 - 300,000 300,000 - 550,000 0 - 2,800 0 - 2,800 0 - 400

Achievable time

980 ± 15 1200 ± 15

119 ± 5 119 ± 5 39 ± 2

Tab. 10.3.2 Settings for adjusting the speed (potentiometer tacho)

Axis X1 Y1 X2 Y2 Z 1-3 Z 1-3

Mode 1 4 4 4 4 4 4

Setting distance

195,000

205,000

395,000

405,000

2,800

New calibra-

tion tool com-

partment;

current sensor

Old calibra-

tion tool com-

partment;

current sensor

Speed, control dis-

tance 1

Waiting time 900ms

120,000

280,000

350,000

450,000

-- - -

Time (ms)

815 ± 10 580 ± 10 -- - -

Speed, control dis-

tance 2

Waiting time 900ms

100,000

300,000

500,000

2,800

New calibra-

tion tool com-

partment;

current sensor

Old calibra-

tion tool com-

partment;

current sensor

Time (ms)

980 ± 10 990 ± 10

119 ± 5 119 ± 5 52 ± 2 47 ± 2

Tab. 10.3.3 Settings for adjusting the positioning quality (P gain)

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Settings for checking the positioning quality/basic data

Axis X1 Y1 X2 Y2 Z 1-3

Mode 1 60 60 60 60 4

Mode 3

5 5 0

Positional deviation 55 2 2 10

Speed

10 10

10 10 4

Acceleration 150 200 100 100 100

Deceleration

150 200

50 50 50

KP 33 10 10 10

1 1 0

Distance

Waiting time 900ms

Distance table Distance table

2,800

Time (ms)

Table Table

130 ±10 130 ± 10

Minimum quality

Deviation after end

signal

5 dgt 50 ms 5 dgt 50 ms

2 dgt

50 ms

2 dgt

50 ms

Tab. 10.3.4 Settings for checking the positioning quality/basic data

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10.3.6.3 Adjusting the dynamic behavior of the z axes

Preparation

● Set up glue application heads 1, 2 and 3 with a full glue cartridge.

● Carry out the zero point correction for the z axis(es), if necessary. Ensure that the zero point correction for

the z axis(es) was entered correctly in the MA data.

● Carry out a head reference run.

● Use an RC filter for the current curve (see Fig. 10.3.7).

Adjusting the offset

● Connect the axis testing device to the Z axis board. Use the momentary-contact switch on the axis testing

device to select position display 4 to 6 corresponding to the z axis concerned.

● Set the axis position to 0 ± 1 digits using the offset potentiometer on the servo board.

● Check: The position display must not fluctuate from the value by more than 1 digits.

Setting the speed

● Set the axis testing device to time measurement (set the toggle switch to -1), rotary switch, axis 0 to 2.

● Ensure that the space beneath the z axis is clear.

● Start the axis in continuous mode. Distance: 0 to 400 digits.

● Increase the P gain on the servo board until the axis can be easily positioned.

● Use the tacho potentiometer on the servo board to set the end message signal to 39 ms ± 2 ms (Z dis-

tance down, see Fig. 10.3.8).

● Check: the positioning time for z axis down must be 39 ms ± 2 ms and z axis up must be 40 ms ± 2 ms.

Adjusting the positioning quality

● Push the glue application head to be set over the calibration tool compartment.

● Start the axis in continuous mode. Distance: 0 to pos. calibration tool compartment for the "current sensor"

positioning type.

● Use the ratio potentiometer on the servo board to increase/reduce the P gain until the rising edge of the

setpoint value (at the transition to the position control) clearly starts to round off (see Fig. 10.3.9).

● The current curve must not rise sharply as shown in Fig. 10.3.11.

Input Test point Signal Coupling Y deflection Trigger X deflection

CH1 Axis test box,

setpoint value

BNC socket

Setpoint

value

DC 1.00 V/Div

CH 1

neg. edge

10%

pre-trigger

10 ms

GND

CH2

Test point 6,

servo board

Actual cur-

rent value

DC 2.00 V/Div

GND

CH3

GND

CH4 Axis test box,

end signal BNC

socket

End signal DC 5.00 V/Div

GND

Tab. 10.3.5 Z axis adjustment: connecting and setting an oscilloscope

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● Readjust the speed using the tacho potentiometer on the servo board:

- If you are using the old metal calibration tool compartment, the positioning time for z axis down must

be 47 ms ± 2 ms.

- If you are using the new plastic calibration tool compartment, the positioning time for z axis down must

be 52 ms ± 2 ms.

● Check: If the P gain is set incorrectly, the setpoint value will not round off or the current curve will rise

sharply (see Fig. 10.3.10 or Fig. 10.3.11).

- Old calibration tool compartment: positioning time for axis down = approximately 47 ms ± 2 ms, axis

up = 49 ms ± 2 ms.

- New calibration tool compartment: positioning time the axis down = approximately 52 ms ± 2 ms, axis

up = 54 ms ± 2 ms.

Checking the offset

See "Adjusting the offset".

Reset the MA data to basic data (see table 10.3.4) and reference the axis.

Fig. 10.3.8 Diagram: Speed and P gain for z axes

MP6 current curve of servo board

End signal

If distance: 000000-000400

V: 10

acceleration: 100

deceleration: 50

Time approx. 39ms +- 2ms

Vnom value