YSM40R_Mainte_E.pdf - 第196页
6-6 6 How to replace consumable parts 5 Separ ate the belt drive pulle y from the shaft. 1. Use a hex wrench (2.5) to loosen the bolts on the coupling. 2. Disconnect the coupling from the drive pulley to allow a gap thro…
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How to replace consumable parts
2. Replacing conveyor belt
The conveyor belt should be replaced if excessive slack, grime or fraying is found after checking it as
described in "5.3.1 Inspecting conveyor belt and cleaning guide and pulley" in Chapter 3. Use the
following procedure to replace the belt.
2.1 Replacing the conveyor belt
1
Prepare for work.
e
1. Remove all items sensitive to magnetic
fields such as wristwatches and magnetic
ID cards.
2. Press the emergency stop button and
then open the machine safety cover.
3. Use the CLAMP ON/OFF switch to lower
the feeder exchange carriage and
detach it.
4. Detach the tape cutter duct.
5. Place a square cloth on the push-up
plate.
2
Detach the board clamp assembly.
Use a hex wrench (2.5) to remove the bolts (4
places shown in the figure at right) that
mount the board clamp assembly.
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CAUTION
Do not remove any bolts other than the 4 bolts shown in
the figure at right.
3
Put a mark at the pulley position.
Using an oil-based pen, put a mark to
indicate the position of the bolt that mounts
the tensioner pulley.
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Loosen the belt.
1. Use two hex wrenches to loosen the belt
tensioner pulley and move it to the end
of the tension adjusting slot (in the
loosening direction).
Hex wrench on pulley side : 5 mm
Hex wrench on bolt side : 4 mm
2. Use a slotted screwdriver to detach the
end pulley shaft next to the tensioner
pulley just loosened and then detach the
end pulley.
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CAUTION
Use care to avoid losing the washers.
Detaching board clamp assembly
Step 2
Board clamp assembly
Board clamp assembly mounting bolts
Loosening the belt
Step 4
Hex wrench (5)
Hex wrench (4)
Loosen this pulley.
WasherRemove this pulley.End pulley shaft
Marking the pulley position
Step3
Use an oil-based pen to mark the pulley position.
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How to replace consumable parts
5
Separate the belt drive pulley from
the shaft.
1. Use a hex wrench (2.5) to loosen the
bolts on the coupling.
2. Disconnect the coupling from the drive
pulley to allow a gap through which the
belt can be taken out.
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Detach the belt from the conveyor.
Detach the conveyor belt by taking it out
through the gap between the coupling and
the drive pulley.
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Clean the guides and pulleys.
1. Use a vacuum assembly (option) to
suction the belt wear debris on the belt
guides and sensors, etc.
2. Use a plastic spatula or similar tool to
remove the belt wear debris adhering to
the outer peripheral surface of the
pulleys.
3. Use a brush or similar tool to remove the
belt wear debris caught in the belt
guides.
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CAUTION
Use a plastic spatula and brush to avoid scratching the
pulleys and guides.
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CAUTION
Do not use a solvent (IPA, etc.) unless the guides and
pulleys are excessively dirty. If using a solvent, be
careful not to spill the solvent on the bearing in the
pulleys during cleaning.
Loosening the coupling
Step 5
Take out the belt through this gap.
Coupling
Drive pulley
Detaching the conveyor belt
Step 6
Cleaning the guide and pulleys
Step 7
Spatula
(made of plastic)
Brush
Belt guides
Outer peripheral
surface of pulley
Outer peripheral surface
of pulley
Belt wear debris
sticking to pulley
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How to replace consumable parts
8
Reattach the belt.
1. Temporarily place the belt on the belt
tensioner pulley.
2. Place the belt on the end pulley
detached in Step 4 and mount it with the
pulley shaft together with the washer.
3. Connect the coupling to the drive pulley
and tighten the bolts.
4. Move the belt tensioner pulley to the
position marked in Step 4 and tighten the
bolt while applying tension.
5. If there is a slack in the belt, adjust the
position of the belt tensioner pulley to
apply proper tension.
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NOTE
The specified conveyor belt tension for this machine is
as follows. Use a tension gauge to adjust the belt
tension as needed.
• Stage 1 : 260 to 320Hz
• Stage 2 : 180 to 220Hz
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CAUTION
The tightening torque for the belt tensioner pulley is 5.5
N·m. Be careful not to overtighten.
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Attach board clamp assembly.
1. Attach board clamp assembly to the
original position. Mount it by tightening 4
bolts with hex wrench (2.5).
2. Remove square cloth.
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Return tape cutter duct to original
position.
Tension measurement point
Step 8
Tension measurement
point (outer side of
each lane