00198150-02_SM_TX_en.pdf - 第162页
7 Conveyor 7.5 Conveyor Belt, Belt Drive and Hexagonal Shaft 162 Service Manual SIPLACE TX Series 06/2017 Removal CAUTION Toothed belt ► Make sure that the toothed belt is not folded or otherwise damaged. ► Use the softw…
7 Conveyor
7.5 Conveyor Belt, Belt Drive and Hexagonal Shaft
Service Manual SIPLACE TX Series 06/2017 161
7.5.3 Replacing the Idler Pulley [03092899Sxx]
Parts, equipment and tools
Select the required idler pulley:
●
Idler pulley 20x5 M-C assy [03121206‑xx]
●
Idler pulley 20x2.5 M-C assy [03121201‑xx]
You also need the following:
●
Magnet lifter, if needed or tweezers and adhesive tape
●
Torque screwdriver ESD 0.4 - 1.0 Nm [00386253‑xx]
●
Bit holder for TorqueVario screwdriver [03078706-xx]
●
Bit, size 4
●
Measuring scale, if needed
●
Belt tension measuring device [00326015‑xx]
Overview
Fig.218: Idler pulley
1. Idler pulley front side
2. Idler pulley back side
WARNING!
Torque
Tighten the fastening screw with a torque of 0.58
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 2mm
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 con-
veyor!
.
Fig.219: Movable idler pulleys
1. Movable idler pulleys
CAUTION!
Fix the T slot nut!
When replacing a movable idler pulley, fix the T
slot nut to the inner side of the conveyor wall
(see description below).
.
7 Conveyor
7.5 Conveyor Belt, Belt Drive and Hexagonal Shaft
162 Service Manual SIPLACE TX Series 06/2017
Removal
CAUTION
Toothed belt
► Make sure that the toothed belt is not folded or otherwise damaged.
► Use the software or manually move the conveyor rail into a position which allows you best ac-
cess.
– To move the conveyor rail manually, pull the toothed belt of the width adjustment unit.
NOTICE
Replacing a movable idler pulley
► If you are replacing a movable idler pulley you will have to move the conveyor side to
get access to the T slot nut (see below).
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation. Observe the instructions in section 1.2 "Preparatory Work..." [}15].
► Move all gantries out of the transport area as far as possible at one side of the machine.
Fig.220: T slot nuts in conveyor side
7 Conveyor
7.5 Conveyor Belt, Belt Drive and Hexagonal Shaft
Service Manual SIPLACE TX Series 06/2017 163
CAUTION
Replacing a movable idler pulley
The movable idler pulleys are fixed to the inner side of the conveyor wall with a T slot nut
[03113747-xx].
If you want to remove a movable idler pulley, proceed as follows:
ü When removing a movable idler pulley, first fix the T slot nut.
► (1) When removing a movable idler pulley in the middle of the conveyor side, you can
reach the T slot nut through the hole on the other side of the conveyor side. Use your
finger or an appropriate tool to fix the T slot nut.
► (2) When removing a movable idler pulley at the beginning or the end of the conveyor
side, fix the T slot nut with your finger (the conveyor sides are open at the side).
ð The T slot nut must not fall into the conveyor side! The lack of room makes sub-
sequent insertion and fixture highly complicated if not impossible!
► Loosen the movable idler pulley.
CAUTION
Loosen the movable idler pulley only as far as necessary!
► Do not remove the movable idler pulley (unless you explicitly need to remove it). Oth-
erwise the T slot nut on the inner side will fall into the conveyor side.
► Remove the idler pulley to be replaced.
CAUTION
Spacer
The fastening screw for some idler pulleys also holds the spacers in place.
► Make sure that you do not loose these.
► Unthread the deflection pulley from the conveyor toothed belt and remove it.
Installation
► Follow the removal instructions in reverse order for installation. Also observe the following in-
structions:
CAUTION
Installation instructions
► Make sure you use the correct fastening screw.
Tighten this fastening screw with a torque of 0.58Nm. Make sure that you do not
tighten the screws too much. This could cause irreparable damage to the conveyor!
► Use any spacers available.
► Do not bend or 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.
► Remove the adhesive tape, if necessary.
► While you tighten the idler pulley, set the tension of the toothed belt correctly (see
7.5.2.1 "Setting the Tension of the Conveyor Toothed Belt" [}159]).