YRM20_Mainte_E.pdf - 第98页

3. 3-month maintenance items 3-31 Chapter 3 Periodic maintenance items 3.3 PU-axis PU-axis (push up axis) takes an essential role whic h prevents board warpage upon clamping a board and board sinking upon transferring. M…

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3. 3-month maintenance items
3-30
Chapter 3 Periodic maintenance items
3.2 RM head unit
3.2.1 Inspecting/cleaning nozzle shaft tip
The dirt on nozzle tip may cause shaft operation error or nozzle change error. Therefore, perform visual
inspection and cleaning of shaft tip once every 3 months.
1
Prepare for work.
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1. Remove all items sensitive to magnetic fields such as wristwatches and magnetic ID cards.
2. If the machine is equipped with nozzle station, store all nozzles to the nozzle station.
3. Press the emergency stop button, detach the feeder exchange carriage, then open the machine safety cover.
4. Move the head unit to convenient position to work and place a square cloth under the head unit.
n
NOTE
See "Lowering RM head/nozzle shafts" above for details of the lowering RM head nozzle shaft.
2
Inspect shaft tip.
1. Turn the rotary so that the relevant nozzle
shaft locates under the Z-axis.
2. Press the Z-axis with finger to lower the
nozzle shaft.
3. (When the nozzle station is not equipped)
Detach nozzle manually.
4. Check that no dirt is found on the position
shown at right.
TIP
Check the inside of shaft with a hand mirror or the similar.
3
Clean nozzle shaft tip.
1. Lower the nozzle shaft with the same
procedure as Step 2.
2. Wipe off dirt on nozzle shaft tip with cotton
swab.
Apply small amount of ethanol on cotton
swab for heavy dirt.
c
CAUTION
Return the nozzle shaft slowly after it is lowered by hand,
as the nozzle shaft tends to strike upon returning.
4
Inspect/clean rest of nozzle tips.
1. Inspect/clean rest of nozzle tips with the
same procedures as Step 2 to 3.
2. Retrieve a square cloth after working.
c
CAUTION
Make sure that all nozzle shafts are completely raised up
after they returned.
5
Return the nozzles to their removed
positions if they are removed by hand
from heads.
Step2
Inspecting shaft tip
Check here
visually
Press the Z-axis
with finger to lower
the nozzle shaft
53340-KMX-10
Step3
Cleaning shaft tip
Clean here
533F5-KMX-10
3. 3-month maintenance items
3-31
Chapter 3 Periodic maintenance items
3.3 PU-axis
PU-axis (push up axis) takes an essential role which prevents board warpage upon clamping a board and
board sinking upon transferring.
Moreover, PU-axis functions as preventing mounting accuracy offset caused by the board sinking upon
transferring. So the periodical inspecting/cleaning should be performed to maintain its function.
c
CAUTION
When the PU-axis related trouble occurs, then contact your sales representative. Disassembly and cleaning of the PU-axis
by the user will void the warranty.
3.3.1 Cleaning/lubricating PU-axis ball screw
1
Prepare for work.
1. Remove all items sensitive to magnetic fields
such as wristwatches and magnetic ID cards.
2. Read any board data.
TIP
Moving the push up unit of both stage 1 and stage 2 are
available by reading board data.
2
Maximize the conveyor width.
1. Press the [Width] button on the [Unit] -
[Conveyor] screen to display the [Conveyor
Width] screen.
2. Input the maximum width (510mm) of your
machine in the "Target Width" field and
press the [OK] button. Then the conveyor
width is changed to the specified.
3
Raise the push up unit.
1. Press the [Push up] button of the target stage
to display the "Conveyor Pushup" screen.
2. Input "0.1mm" in the "Board thickness" field
and press the [OK] button. Then the push up
unit raises.
n
NOTE
When the board size X of the board data selected at Step
1 excesses 380mm, the [Push up] button of upstream side
is grayed-out. The upstream push up unit raises engaging
with the raise of downstream push up unit.
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4
Remove old grease.
1. Press the emergency stop button and detach
the feeder exchange carriage, then open the
machine safety cover.
2. Wipe away old grease completely from 2
ball screws using a lint-free cloth.
Step 2,3
2
3
Changing the conveyor width
Input 510mm
Input 0.1mm
54302-KMX-00
Cleaning ball screw
Step 4
Lint-free cloth
Ball screw
53341-KMX-00
3. 3-month maintenance items
3-32
Chapter 3 Periodic maintenance items
5
Apply new grease by hand uniformly
over the lead of ball screw.
6
Spread grease.
1. Close the machine safety cover, attach the
feeder exchange carriage and release the
emergency stop.
2. Press the [Push up] button to lower the push
up unit.
3. Raise the push up unit as the same
procedure of Step 3.
4. Repeat up/down for some times to spread
grease. The push up unit should stay its
upmost position after lubrication.
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7
Remove excess grease by hand.
1. Press the emergency stop button, detach the
feeder exchange carriage and open the
machine safety cover.
2. Remove excess grease by hand.
Applying grease
Step 5
Ball screw
Grease
53342-KMX-00