Service Manual HS60 - 第178页

6 Modu lar PCB conv eyor syste m Ser vic e Manu al HS- 60 6. 10 R epl ac in g t he con ve yor t oot hed be lt (00 36 48 47- 0 1) 03/ 200 3 US I ssue 176 6.10.3 Adjusting the ten sion of th e conv eyor toot hed be lt F ig…

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Service Manual HS-60 6 Modular PCB conveyor system
03/2003 US Issue 6.10 Replacing the conveyor toothed belt (00364847-01)
175
Conduct the procedures for replacement as described below:
Æ Move the PCB conveyor to the position which gives you best access to the conveyor belt.
Æ Move the Y-gantries into the area outside the PCB conveyor.
Æ Turn the machine off at the main switch and disconnect the machine from the mains voltage.
Æ Make sure the machine has been properly secured to prevent it being switched on again during
servicing.
Æ If the drive unit is installed, remove it as described in Section 6.7.
Æ If the mount is installed, remove the clamping ring or circlip on the mount and the 3 screws
fastening the mount in place (see Fig. 6.10.7
).
Æ Loosen the deflection pulley with the slot and relieve the tension on the belt.
Æ Carefully extract the mount or the drive unit, while also gently weaving out the conveyor
toothed belt.
6.10.2.2 Installation
CAUTION
The new toothed belt must not be stretched or kinked!
Æ Feed the new toothed belt into the drive unit and weave around the deflection pulleys.
Æ Insert the drive unit with the conveyor toothed belt and fasten the mount or the drive unit.
Please refer to Section 6.7.3
for installation instructions for the drive unit.
Æ Adjust the belt tension as described in Section 6.10.3.
6 Modular PCB conveyor system Service Manual HS-60
6.10 Replacing the conveyor toothed belt (00364847-01) 03/2003 US Issue
176
6.10.3 Adjusting the tension of the conveyor toothed belt
Fig. 6.10.8 Example for adjusting belt tension
Key
Æ The deflection pulleys, around which the conveyor toothed belt is run at approximately 180°,
are fastened at a slot. The tension of the conveyor toothed belt can be adjusted at this slot.
Æ Position the measuring point of the belt tension device at the strand center (i.e. the longest dis-
tance between the two deflection pulleys) of the conveyor toothed belt.
Æ Set the tension of the conveyor toothed belt according to the following values.
(1) Deflection pulley with slot (2) Measuring point of belt tension measuring
device (Strand center)
Service Manual HS-60 6 Modular PCB conveyor system
03/2003 US Issue 6.10 Replacing the conveyor toothed belt (00364847-01)
177
6.10.3.1 Belt tension HS 60 for conveyor track 1 (single and dual conveyor)
– Input conveyor: 170 Hz +/- 17 Hz
– Placement area 1: 70 Hz +/- 7 Hz
– Intermediate conveyor: 147 Hz +/- 15 Hz
– Placement area 2: 70 Hz +/- 7 Hz
– Output conveyor: 170 Hz +/- 17 Hz
6.10.3.2 Belt tension HS 60 for conveyor track 2 (dual conveyor)
– Input conveyor: 170 Hz +/- 17 Hz
– Placement area 1: 70 Hz +/- 7 Hz
– Intermediate conveyor:118 Hz +/- 12 Hz
– Placement area 2: 70 Hz +/- 7 Hz
– Output conveyor: 170 Hz +/- 17 Hz
6.10.3.3 Belt tension S 27 HM (single and dual conveyor)
Fixed conveyor side (DC motors)
– Input conveyor: 110 Hz +/- 5 Hz
– Placement area: 100 Hz +/- 5 Hz
– Output conveyor: 100 Hz +/- 5 Hz
6.10.3.4 Belt tension S 27 HM (single and dual conveyor)
Movable conveyor side
– Input conveyor: 95 Hz +/- 5 Hz
– Placement area: 110 Hz +/- 5 Hz
– Output conveyor: 150 Hz +/- 5 Hz