00900194-01_SM_ASM ProcessLens_Dual-lane_EN.pdf - 第64页
4 Replacing spare parts at the conveyor 4.5 Conveyor belt, belt drive and hexagonal shaft 64 Service Manual ASM ProcessLens Dual-lane 09/2018 4.5.2 Setting the belt tension The precalculated values for setting the belt t…
4 Replacing spare parts at the conveyor
4.5 Conveyor belt, belt drive and hexagonal shaft
Service Manual ASM ProcessLens Dual-lane 09/2018 63
4.5 Conveyor belt, belt drive and hexagonal shaft
4.5.1 Replacing the toothed belt (conveyor belt)
Parts
Fig.38: Toothed belt (conveyor belt) and movable idler pulleys
1 Input area 03172246-xx Belt L=897mm
2 Placement area 03121441-xx Synchronous belt L=843mm
3 Output area 03121441xx Belt L=843mm
4 Movable idler pulleys (see Replacing the idler pulley (conveyor belt))
Equipment and tools
00326015‑xx Belt tension measuring device
00353832-xx Allen key set
Removal
► Use the software or manually move the conveyor rail into a position which allows you best
access.
– To move the conveyor rail manually, pull the toothed belt of the width adjustment unit.
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
► Loosen the movable idler pulley.
CAUTION
Loosen the movable idler pulley only as far as necessary!
► Do not remove the movable idler pulley. Otherwise the T slot nut on the inner side will
fall into the conveyor rail.
► Carefully unthread the belt drive.
Installation
► Check the new toothed belt before fitting it. Hold it up high. It should hang loose and should
not twist.
► Follow the removal instructions in reverse order for further installation. Also observe the fol-
lowing instructions:
– Do not bend or damage the toothed belt.
– Make sure that the toothed belt is positioned accurately in the guidance on the motor
shaft / belt drive.
– When you tighten the idler pulley, set the tension of the toothed belt (see below).
4 Replacing spare parts at the conveyor
4.5 Conveyor belt, belt drive and hexagonal shaft
64 Service Manual ASM ProcessLens Dual-lane 09/2018
4.5.2 Setting the belt tension
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
4.5.2.2 "Calculating the belt tension" [}65]).
4.5.2.1 Setting the tension of the conveyor toothed belt
Equipment and tools
00326015‑xx Belt tension measuring device
00353832-xx Allen key set
Overview of measuring points and values
Fig.39: Measuring points
A Movable idler pulleys
1 Measuring point on the toothed belt in the input area 45 +/- 4.5 Hz
2 Measuring point on the toothed belt in the placement area 62 +/- 5 Hz
3 Measuring point on the toothed belt in output area 279 +/- 27 Hz
4 Replacing spare parts at the conveyor
4.5 Conveyor belt, belt drive and hexagonal shaft
Service Manual ASM ProcessLens Dual-lane 09/2018 65
Adjustment
► Use the software or manually move the conveyor rail into a position which allows you best
access.
– To move the conveyor rail manually, pull the toothed belt of the width adjustment unit.
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation.
► Check the belt tension at the relevant measuring point.
► If the belt tension is not correct, adjust the movable idler pulley.
CAUTION
Do not let the T groove nut fall into the conveyor rail!
► Do not remove the movable idler pulley completely, to make sure that the grooved nut
does not fall into the conveyor rail.
► Repeat the measurement four times.
4.5.2.2 Calculating the belt tension
NOTICE
For conveyor belt only
This calculation only applies to the conveyor belts of SIPLACE TX machines.
Fig.40: 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 pul-
leys parallel to the conveyor belt. (see dia-
gram)
CAUTION!
Note that it is not always possible to simply
measure the distance between the idler pulleys
from center to center.
.
► Calculate the belt tension using the following for-
mula:
(15000 / idler pulley spacing [mm]) [Hz]
The permissible tolerance is always plus/minus 10%
of the calculated value.
Example Distance between the idler pulleys: 235mm
Calculation 15000 / 235 = 64 (rounded, exactly 63.829…)
10 % von 63.829… = 6 (rounded, exactly 6.3829…)
Result → Belt tension: 64 +/- 6 Hz