00198829-01_SM_X-Series-S_Hxxxx_EN - 第201页
7 Conveyor 7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021 201 Overview of measuring points, measuring values and movable idler pulleys Fig.265: Overview of measu…
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
200 Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021
Removal
► 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" [}162]
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
1.2 "Preparatory work..." [}16]
► Loosen the hexagonal shaft on the belt drive or conveyor drive (motor), so that you can move
the shaft freely. To do this, dismantle the hexagonal shaft fixture on one side and the corres-
ponding plastic bearing on both sides.
7.6.6 "Replacing the hexagonal shaft" [}205]
Fig.264: Toothed belt
► Loosen the movable idler pulley (2).
► Loosen the top two idler pulleys(1).
► Remove the screws fastening the belt
drive(4)
(or conveyor drive).
► If you replace a conveyor belt in the
placement area, you will also need to
loosen the top retaining screw (3)
on
the spring. Make sure that you do not
lose the spring and the bushing on the
screw. When you refit them, check the
bushing for correct orientation.
► Carefully unthread the conveyor belt.
Installation
Follow the removal instructions in reverse order for installation. Also observe the following instruc-
tions:
► Check the new toothed belt before fitting it. Hold it up high. It should hang loose and should
not twist.
► Make sure that you do not fold or otherwise damage the toothed belt.
► Make sure that the toothed belt is positioned accurately in the guidance on the motor shaft or
in the belt drive.
► If you have loosened the spring, check the bushing for correct orientation when you fit it back
again.
7.7.1 "Replacing the clamping unit (clamping plate), spacer disks and tension spring" [}207]
► When you tighten the movable roller, set the tension of the toothed belt correctly.
7.6.2 "Setting the belt tension (conveyor belt)" [}200]
7.6.2 Setting the belt tension (conveyor belt)
The precalculated values for setting the belt tension can be found in the following chapters.
In addition, the value for any section of the conveyor belt can be calculated using a formula (see
7.6.2.2
"Calculating the belt tension" [}202]).
7.6.2.1 Setting the Tension of the Conveyor Toothed Belt
Parts, equipment and tools
●
Belt tension device [00326015-xx]
●
With installed input/output extension option:
Assembly instructions "SIPLACE X-Series S input/output extension" [DE EN: 00197089-xx]
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021 201
Overview of measuring points, measuring values and movable idler pulleys
Fig.265: Overview of measuring points and values
Side panel Side A Side B Side C Side D
1 Input area 182 +/- 18 182 +/- 18 142 +/- 14 142 +/- 14
2 PA1 49 +/- 5 49 +/- 5 49 +/- 5 49 +/- 5
3 Center 58 +/- 6 58 +/- 6 58 +/- 6 58 +/- 6
4 PA2 49 +/- 5 49 +/- 5 49 +/- 5 49 +/- 5
5 Output area 174 +/- 17 174 +/- 17 211 +/- 21 211 +/- 21
P Movable idler pulleys
7 Conveyor
7.6 Conveyor Belt, Belt Drive and Hexagonal Shaft
202 Service Manual SIPLACE X-Series S (from Hxxxx) 01/2021
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" [}162]
► 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.
► Correct the belt tension when needed, using 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.266: 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