00197042-04_SM_X-Serie-S_Customer_EN - 第250页
7 Conveyor 7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft 250 Service Manual SIPLACE X-Serie S 06/2019 7.6.3 Replacing the tape drive Parts, equipment and tools ● Belt drive assembly SXa [03092315-xx] ● Bearing for he…
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
Service Manual SIPLACE X-Serie S 06/2019 249
Setting
► Use the software to move the conveyor sides into a position which allows you best access. As
an alternative, you can loosen the clamps for the relevant sides in dual conveyors.
7.2 "Loosening the Conveyor Side Clamps" [}207]
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
1.2 "Preparatory work..." [}16]
► Check the belt tension at the relevant measuring point.
► If the belt tension is not correct, set it with the help of the movable idler pulley.
► Repeat the measurement 4 times.
7.6.2.2 Calculating the belt tension
NOTICE
For conveyor belt only
This calculation only applies to the conveyor belt.
Fig.318: Measuring the distance
► Define the two idler pulleys between
which you want to set the belt tension.
If possible, do not use the movable
idler pulleys.
► Measure the distance between the two
idler pulleys parallel to the conveyor
belt.
CAUTION!
Note that it is not always possible to
simply measure the distance
between the idler pulleys from cen-
ter to center.
.
► Calculate the belt tension using the fol-
lowing formula:
20000 [Hz mm]
/ idler pulley spacing [mm]
The permissible tolerance is always plus/
minus 10% of the calculated value.
Example
Distance between the idler pulleys: 235mm
Calculation:
20000 / 235 = 85 (rounded, exactly 85.106…)
10 % of 85.106… = 9 (rounded, exactly 8.5106…)
Result:
Belt tension: 85 +/-9 Hz
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
250 Service Manual SIPLACE X-Serie S 06/2019
7.6.3 Replacing the tape drive
Parts, equipment and tools
●
Belt drive assembly SXa [03092315-xx]
●
Bearing for hexagonal shaft SXa (plastic bearing) – pack of 10 [03092024-xx]
Overview
Fig.319: Overview of tape drive
1. Tape drive
2. Washer under the top fastening screw
Removal and installation
► Replacement of the belt drive is identical to replacement of the conveyor drive. For more in-
formation about this read section 7.4.1 "Replacing the conveyor drive" [}218].
7.6.4 Replacing the drive shaft on the tape drive
Parts, equipment and tools
●
Synchronous shaft assembly SXa [03092383-xx]
●
Bearing for hexagonal shaft SXa (plastic bearing) – pack of 10 [03092024-xx]
Removal and installation
► Replacement of the drive shaft on the tape drive is follows the same procedure as replace-
ment of the toothed belt on the conveyor drive.
7.4.4 "Replacing the toothed belt (conveyor drive)" [}223]
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
Service Manual SIPLACE X-Serie S 06/2019 251
7.6.5 Replacing the idler pulley
Parts, equipment and tools
●
Idler pulley SXa [03092899Sxx] (including screws, spacer and clamping device)
●
Magnet lifter, if needed or tweezers and adhesive tape
●
Torx screwdriver ESD 1.0-5.0 Nm [03078400-xx]
●
Bit holder for TorqueVario screwdriver [03078706-xx]
●
Bit, size 4
●
Measuring scale, if needed
Overview
Fig.320: Overview of idler pulley
1. Idler pulley
2. Fastening screw for idler pulley
WARNING!
Tighten the fastening screw with a
torque of 1.8 Nm. Make sure that you
do not tighten the screws too much.
This could cause irreparable damage
to the conveyor!
The corresponding thread is only in 1.5
to 2 mm thick plates and could be
damaged if you use a torque which is
too high.
For this reason, avoid using screws
which are too short. Use a measuring
scale to check, if needed!
This could cause irreparable damage
to the conveyor!
.
Installation location of idler pulley Fastening screw
Placement area ISO10642 - M4x6
Movable idler pulleys ISO10642 - M4x8
Other positions in the input, intermediate and output area ISO10642 - M4x10
Exception: conveyor side A next to the LLS transmitter ISO10642 - M4x8
First and last idler pulley on the transfer positions to the prede-
cessor and successor machine
One additional spacer disk