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SIPLACE 80 S-20/F4 Service Manual 7 Components Table Edition 03/97 7.6 Empty Tape Cutting Unit and Empty Tape Channel 7 - 41 Fig. 7.6.4 Replacing and tensioning the cut t oothed belt Key to Fig. 7.6.4 1 Cu t toothed belt…
7 Components Table SIPLACE 80 S-20/F4 Service Manual
7.6 Empty Tape Cutting Unit and Empty Tape Channel Edition 03/97
7 - 40
● Quit the SITEST program.
DANGER QQQ
Switch off the machine at the main switch and disconnect it from the main power supply.
● Pull out the plug connections of both components changeover tables (interface connector X37, mains plug
and, if applicable, pneumatics connection), in each case on the right-hand side of the machine base.
● Remove the components changeover tables: See the Section 7.6.2.2 ’Checking the Limit Switch and
Cable Y637, Y638’.
● Connect the changeover tables in reversed position in each case on the right-hand side of the machine
base.
● Please note with the following work the DANGER notice above: danger of physical injury!
● Switch the machine on, load the SITEST program and select:
"Component table" → "Single functions" → "Tape cutting unit".
● Check now the motor activation:
– If the motor is now activated, there is an interruption on the processor board of the associated com-
munications unit or in the components table interface cable Y559-W1.
Check the cable Y559, replace the cable or the communications unit as described in Section 7.5
’Communications Unit’.
● When refitting the empty tape channel align it with the pressure rod (see Section 7.6.12).
● Carry out the Section 7.6.15 ’Concluding Work’.
7.6.10 Checking, Replacing and Tensioning the Cut Toothed Belt at the
Cutter Wheel
If the cut toothed belt is damaged or incorrectly tensioned, this can be the cause of the motor being switched
out, premature wear or the tapes not being cut.
● If you have not yet done so, select "Abort placement".
DANGER QQQ
Switch off the machine at the main switch and disconnect it from the main power supply.
● Remove the components changeover table. To do so, carry out all steps as described in Section 7.6.2.2
’Checking the Limit Switch and Cable Y637, Y638’. Pay attention to the placement head!
● Remove the empty tape cutting unit (see Section 7.6.6 ’Checking and Replacing the Cutter Wheel and
Cutter Strip’).
● Unscrew and remove the two tension pieces (see Section Fig. 7.6.4 ’Replacing and tensioning the cut
toothed belt’) and thread out the toothed belt.
● Fit the new toothed belt in the reverse sequence of operations, first fastening the tension pieces so that the
toothed belt is at "normal" tension.
SIPLACE 80 S-20/F4 Service Manual 7 Components Table
Edition 03/97 7.6 Empty Tape Cutting Unit and Empty Tape Channel
7 - 41
Fig. 7.6.4 Replacing and tensioning the cut toothed belt
Key to Fig. 7.6.4
1 Cut toothed belt
2 Cutter wheel
3 Deflection pulleys
4 Synchronous pulley
5 Spanner
6 2 M4 hexagon socket screws
A Measure belt tension in the center of the belt, setpoint value: 40-45 Hz
4
2
3
1
6
5
A
7 Components Table SIPLACE 80 S-20/F4 Service Manual
7.6 Empty Tape Cutting Unit and Empty Tape Channel Edition 03/97
7 - 42
NOTE
The exact adjustment is carried out with the aid of the belt tension measuring device. The user manual is
included under this item number.
● Bring the empty tape cutting unit into a stable position, and then position the belt tension measuring device
at the empty tape cutting unit corresponding to the measurement point in Section Fig. 7.6.4.
● Measure the belt tension when the carriage is on the left and when it is on the right:
– Halfway along the belt you must measure 40 - 45Hz.
● If necessary, correct the toothed belt tension by moving the corresponding tension piece.
● Finally make sure that the screws are firmly tightened up at the tension pieces.
● If applicable, go straight on to check the endless toothed belt (see next section).
● Fit the empty tape cutting unit into the machine as described in Section 7.6.14, subsection "Reinstalling
and adjusting the empty tape cutting unit".
● Carry out the "Concluding work" including a function check (see Section 7.6.15).
7.6.11 Checking, Replacing and Tensioning the Endless Toothed Belt
If the endless toothed belt is damaged or incorrectly tensioned, this can - similarly to with the cut toothed belt
- be the cause of the motor being switched out, premature wear or tapes not being cut.
● To remove the empty tape cutting unit follow precisely the same procedure as for the cut toothed belt
described above, from the first point.
● Undo the screws fastening the clamping connector to the cutter wheel carriage (2 socket-head cap screws
M4, see Fig. 7.6.5) and lift the defective cut toothed belt upwards and off the synchronizing disks.
● Fit the new endless toothed belt (A, B, C in Fig. 7.6.5). Make sure that the welded join of the toothed belt is
positioned centrally as shown in the diagram.
● Bring the empty tape cutting unit into a stable position, and then position the belt tension measuring device
so that you can measure the belt tension centrally.
● Make the measurements while referring to the user manual for the belt tension measuring device:
– The toothed belt tension must amount to 30 - 35Hz.
● If this is not the case, correct the position of the left-hand synchronizing disk axle within the slot accord-
ingly. To do this, slacken off the hexagonal nuts at the lower end of the axle (underside of the support).
● Finally, make sure that the synchronizing disks mounting is firmly seated.
● Fit the empty tape cutting unit back into the machine as described in Section 7.6.14, subsection "Reinstall-
ing and adjusting the empty tape cutting unit".
● After this carry out the "Concluding work" including checking functioning (see Section 7.6.15).