YSM20_YSM20W_Mainte_E.pdf - 第102页

3-44 3 Periodic maintenance items 5.2 Conveyor 5.2.1 Inspecting conveyor belt and cleaning the guides Inspect the convey or belt for wear . As the belt wears a way , slippages ma y occur that prevent securely conveying t…

100%1 / 179
3-43
3
Periodic maintenance items
7
Blow air into the spline air path.
1. Prepare the air blow tool and connect it
to the air connector on the left or right of
the machine.
2. Cover the portion where the air hose has
been disconnected so that no air leaks,
and then blow the air into the inside of
the spline shaft.
3. Check that contaminant is no longer
discharged from the spline shaft tip.
n
NOTE
Repeat Step 6 and Step 7 until ethanol that flows out
from the spline shaft becomes clean.
8
Return the head to its original
state.
1. Install the maintenance bolt.
2. Attach the joint.
3. Connect the air hose.
4. Attach the front cover.
9
Check the air hose position.
Check that the air hoses are not crossing
and the air hose marking position is aligning
with the bottom of the tube holder.
c
CAUTION
If the air hoses are attached incorrectly, they are pulled
or bent when the head is lowered. This may damage the
air hoses or parts
.
TIP
The air hose marking position is 80 mm from the lower
end of the hose.
n
NOTE
If removed nozzles manually from the head, return
them to the original position of the head.
Blowing the air path
Step 7
Air blow tool
Push this portion
with finger.
53336-N2-00
Checking the air hose attaching state
Step 9
Do not cross air hoses.
Make sure that air hose marking position
is aligning with bottom of tube holder.
Front cover
Incorrect attachment of air hoses (when head is lowered)
Air hose damage by hitting
Bending of air hose
533E4-N2-00
3-44
3
Periodic maintenance items
5.2 Conveyor
5.2.1 Inspecting conveyor belt and cleaning the guides
Inspect the conveyor belt for wear. As the belt wears away, slippages may occur that prevent securely
conveying the boards. It is therefore necessary to make periodic checks for wear of the conveyor belt.
Additionally, if belt wear debris accumulate on the light receiving surface of the conveyor sensor, troubles such
as incorrect board detection may occur. If belt wear debris accumulate in the belt guide or pulley periphery,
the belt may be fixed.
YSM20 and YSM20W roughly include the following 4 types of conveyor. The position of the tensioner (pulley
bracket and pulley) and the belt tension standard differ.
• YSM20 Dual-stage type
• YSM20/YSM20W Dual-lane type
• YSM20 Single-lane type
• YSM20W Single-lane type (for transferring heavy boards)
1
Change the conveyor width to a
convenient width for maintenance
work.
1. Press the [Width] button to display the
"Conveyor Width" screen.
2. In the "Target Width" box, enter a width
wide enough (about 200 mm) for using
tool (hex wrench) and press [OK] button.
The conveyor is changed to the specified
width.
2
Prepare for work.
e
1. Take off all accessories susceptible to the
magnetic fields, such as a wristwatch
and/or magnetic ID card.
2. Press the emergency stop button and
then open the machine safety cover.
3. If the machine is carriage type, detach
carriage to easily access to the conveyor.
4. Place a square cloth on the push-up
plate.
3
Detach the board clamp plates.
Use a hex wrench (3) to remove the 4 board
clamp bolts. Then remove the board clamp
plate.
c
CAUTION
Do not remove any bolts other than the 4 bolts shown in
the figure on the right.
Changing the conveyor width
Step 1
54304-N2-00
Detaching the board clamp plate
Step 3
Board clamp plate
Board clamp plate mounting bolts
533D1-N2-00
3-45
3
Periodic maintenance items
4
Loosen the belt.
1. Before loosening the conveyor belt, put a marking at the current position of pulley bracket (YSM20W
Single-lane type: pulley) with a permanent marker.
2. Use a hex wrench (3) to loosen 2 bolts mounting the pulley bracket and move the bracket all the
way to the end of the slotted hole (in loosening direction) while referring to the figure shown below.
Regarding YSM20W Single-lane type, loosen the pulley mounting bolt with hex wrenches (5 and 4)
and move the pulley.
Loosen the brackets.
W1-axis
W3-axis
W4-axis
W2-axis
Loosening the conveyor belt
YSM20 Dual-stage
■ W3-axis, W4-axis
■ W1-axis, W2-axis
Loosen the brackets.
Put a marking at the bracket
position with a permanent marker.
533D3-N2-20