YS12P_YS12F_Mainte_E.pdf - 第117页
4-10 4 How to replace consumable parts 6 Remo ve the belt from the conve yor . Remove the conveyor belt through the clearance between the spline shaft and drive pulley. 53434-L6-00 7 Clean the belt guide and pulley . 1. …
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4
How to replace consumable parts
4
Loosen the belt.
1. Before loosening the conveyor belt, mark at the current position of pulley with a permanent marker.
2. Loosen the pulley mounting screws applying the tension with a hex wrenches (5 and 4) referring to
the figure below.
3. Move the pulley to the direction that the belt is loosened.
: Position to separate spline shaft
: Direction to pull spline shaft
Hex wrench (4)
Hex wrench (5)
Mark pulley position.
Direction that belt is loosened
Replacing the conveyor belt
53432-L6-00
5
Separate the spline shaft from the
drive pulley.
Remove the mounting bolt from the belt
drive pulley with a hex wrench (3). (See the
figure shown in Step 4 for the pulley
position.) Pull out the spline shaft to make a
clearance.
53433-L6-00
Step 5
Separating spline shaft
Mounting bolt
Drive pulley
Spline shaft
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4
How to replace consumable parts
6
Remove the belt from the conveyor.
Remove the conveyor belt through the
clearance between the spline shaft and
drive pulley.
53434-L6-00
7
Clean the belt guide and pulley.
1. Use a vacuum assembly (option) to
suction the belt wear debris on the belt
guide and sensor, etc.
2.
Use a plastic spatula or similar tool to
remove the belt wear debris adhering to
the outer peripheral surface of the pulley.
3. Use a brush or similar tool to remove the
belt wear debris caught in the belt
guide.
53435-L6-00
c
CAUTION
Use a plastic spatula and brush to avoid scratching the
pulley and guide.
c
CAUTION
Do not use a solvent (IPA, etc.) unless the guide and
pulley are excessively dirty. If using a solvent, be
careful not to spill the solvent on the bearing in the
pulley during cleaning.
8
Attach the conveyor belt.
1. Attach a new belt temporarily while
putting it on the pulley.
2. Loosen the mounting bolt and connect
the spline shaft.
3. Move the pulley applying tension to the
position marked in Step 4 and tighten the
mounting bolt.
4.
If looseness of the belt is found, adjust the
pulley position to apply tension.
53436-L6-00
n
NOTE
The conveyor belt tension standard value of this
machine is 550 to 610 Hz. Adjust the conveyor belt
tension with a tension meter as necessary. The same
standard value applies to the extension conveyor type.
c
CAUTION
The tightening torques of the pulley mounting bolt that
applies tension is 5.5 N·m. Do not tighten the bolt
excessively.
9
Attach the board clamp plate.
1. Fit the board clamp plate into its original
position and tighten the board clamp
plate mounting bolts with a hex wrench
(3).
2. Remove the square cloth on the push-up
plate.
Step 6
Removing the conveyor belt
Step 7
Cleaning the belt guide and pulley
Spatula (made of plastic)
Belt wear debris
sticking to pulley
Outer peripheral
surface of pulley
Belt guide
Brush
Step 8
Tension measurement point
Tension measurement point
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4
How to replace consumable parts
0
Check the belt rotating condition.
1. Make sure that the board clamp plate
top surface is approx. 0.5 mm lower than
the belt upper surface.
2. Close the machine safety cover and
cancel the emergency stop. Set the
carriage if the machine uses it.
3. Press the [Conveyor Drive] buttons on the
[Unit] - [Conveyor] screen to turn on the
conveyor motor and check the belt
rotation.
4. If the conveyor belt rotation is uneven or
if the belt deflects, adjust the pulley
position that applies tension again.
54401-L6-00
c
CAUTION
When the difference between the belt upper surface
and board clamp top surface is very little, the board
transfer error may occur frequently. In this case, contact
YAMAHA sales representative.
Step 10
0.5 mm
Conveyor drive buttons
Left Right
Low Left Low Right
Checking conveyor belt rotation
Checking the belt rotating condition
Board clamp plate
Board clamp plate
Conveyor belt
Belt upper surface