192277 - Micron Technical Reference Volume 3.pdf - 第39页
RAPID TRANSIT CONVEYOR (R TC) MODULE REPLACEMENT PROCEDURES Chapter Issue 4, Aug 14 Technical Reference Manual 22.27 13. Perform the Rear Rail Parallelism check (Adjustments and Settings section of this chapter refers) t…
RAPID TRANSIT CONVEYOR (RTC) MODULE
REPLACEMENT PROCEDURES
22.26 Technical Reference Manual Chapter Issue 4, Aug 14
5. Fit the board clamp to the print station rail.
6. Pushing the board clamp towards the other rail, refit the screws removed in
Step 1.
NOTE
The Board Clamp Setting procedure is not required after board clamp
replacement.
Rear Rail Drive Belt 1. At the rear of the rising table, slacken the adjustable idler pulley using two
8mm spanners (one either side of the drive mechanism support plate).
2. Slide the adjustable idler pulley to slacken the drive belt.
3. Remove the drive belt and discard.
NOTE
If the drive belt has snapped, the left and right drive shafts may be out of
synchronization with each other. Turn the left and right hand drive shaft
pulleys (together) fully counter-clockwise.
4. Fit the replacement drive belt without moving the right or left hand drive shaft
pulley.
5. Using a suitable cable tie, engage a forcemeter with the adjustable idler
pulley. Apply a horizontal force of 6kg.
6. Maintaining this force, tighten the adjustable idler pulley securing nut.
7. Using a tension meter on the bottom of the drive belt, check the tension is
between 40Hz to 45Hz.
8. Adjust the drive belt tension as necessary to achieve the reading in Step 7.
9. In Diagnostics select Rapid Transit Conveyor module.
10. Select Cycle Rail Width to even out the tension in the belt.
NOTE
Ensure there is no tooling on the table.
11. Stop after one complete cycle and repeat Steps 7 to 8.
12. Select Home Rail Width.
Adjustable Idler
Pulley
Moving Rail Stepper
Motor Pulley
Left Hand Drive
Shaft Pulley
Right Hand Drive
Shaft Pulley
Drive Mechanism
Support Plate
RAPID TRANSIT CONVEYOR (RTC) MODULE
REPLACEMENT PROCEDURES
Chapter Issue 4, Aug 14 Technical Reference Manual 22.27
13. Perform the Rear Rail Parallelism check (Adjustments and Settings section
of this chapter refers) to ensure no teeth were jumped during the belt
change.
Inroad/Outroad
Transport Belts
The rear inroad and outroad transport belts are 3mm in diameter. The front
inroad and outroad transport belts are 2mm in diameter.
Ensure the correct diameter transport belts are used when replacement is
required.
Transport
Mechanism Drive
Belt
Use the following procedure to replace the transport mechanism drive belt:
1. In Diagnostics select Rapid Transit Conveyor module.
2. Home the vane stepper motor.
3. Home the transport mechanism.
4. Power down the machine.
5. Using a 2mm Allen key, remove the four screws that secure the board stop
vane to the bearing block and remove the vane.
6. Remove the two screws that secure the front outroad conveyor to the
transport mechanism and remove the conveyor.
7. Disconnect the vane stepper motor connection.
8. Using a flat bladed screwdriver, remove the two screws that secure the drag
chain to the belt clamp.
9. Manually move the transport mechanism to align the three belt clamp
securing screws with the cut-out in the extrusion.
10. Using a 10mm spanner, release the belt tension by loosening the transport
mechanism pulley securing nut on the inroad side of the transport mecha-
nism.
Plan View on RTC System
Drag Chain Securing Screw Holes
Belt Clamp
Belt Clamp Securing Screws
Vane Stepper
Motor Connection
Transport Mechanism
Pulley Securing Nut
RAPID TRANSIT CONVEYOR (RTC) MODULE
REPLACEMENT PROCEDURES
22.28 Technical Reference Manual Chapter Issue 4, Aug 14
11. Using a 3mm Allen key, remove the three screws that secure the belt clamp
to the bearing block and remove the belt clamp.
12. Remove the drive belt from the transport mechanism.
13. Fit the new drive belt terminating both ends at the top of the bearing block.
14. When placing the belt in place on the bearing block, ensure that any slack
is taken up without applying any tension to the belt.
15. Refit the belt clamp.
16. Refit the drag chain to the belt clamp.
17. Connect the vane stepper motor.
18. Refit the board stop vane.
19. Refit the front outroad conveyor.
20. Using a piece of wire between the pulley and the transport mechanism
extrusion, engage a forcemeter on the transport mechanism pulley on the
inroad side of the transport mechanism. Apply a horizontal force of 24kg.
21. Maintaining this force, tighten the securing nut.
22. Carry out the front conveyor alignment for the outroad conveyor, Front
Conveyor Alignment - Adjustments and Settings section of this chapter
refers.