88192277-01-19 - Micron Technical Reference V9 Volume 4.pdf - 第65页

STINGER REPLACEMENT PROCEDURES Chapter Issue 4, Nov 19 Technical Reference Manual 38.23 10. R eplace the drive belt; tension the belt by push ing the drive pulley to the rear . Ensure that it sits in the teeth of the dri…

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38.22 Technical Reference Manual Chapter Issue 4, Nov 19
STINGER
REPLACEMENT PROCEDURES
7. Remove the two M3 x 16 socket head screws that hold the laser unit to the
dispense body.
NOTE
The camera has been omitted for clarity.
8. Remove the laser sensor.
9. Unscrew the connector lock ring and remove the sensor from the connector.
10. Screw the connector lock ring into the replacement laser unit.
11. Align the assembly with the mounting holes and fix it using the two socket
head screws. The laser is in a fixed location and does not need positioning.
12. Refit the magnet plate.
13. Load the stencil.
14. Close the printhead front cover.
15. Reconnect the printer to the pneumatic supply and unlock the mains elec-
trical isolator.
16. Switch the mains isolator ON.
17. When requested, press the System button.
18. Run a calibrated test product (next section in this chapter) to calibrate
offsets.
Auger Drive Belt
Replacement
A pulley belt, located under the top cover of the unit, drives the auger.
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead front cover.
3. If fitted, remove the stencil
4. Pull the camera carriage to the front of the printer.
5. Remove the two M2.5 x8 countersunk head screws, which secure the cover.
6. Remove the cover.
7. Slacken off the four M2.5 x 5 cap head screws of the drive pulley mounting.
8. Move the motor drive pulley to the front.
9. Lift the drive belt clear of the driven pulley.
STINGER
REPLACEMENT PROCEDURES
Chapter Issue 4, Nov 19 Technical Reference Manual 38.23
10. Replace the drive belt; tension the belt by pushing the drive pulley to the
rear. Ensure that it sits in the teeth of the driven pulley and does not slip.
Make sure that the motor does not move when tightening the screws.
11. Tighten the four cap head screws.
12. Recheck the belt operation. Movement should be smooth with no resist-
ances.
13. Refit the cover.
14. Load the stencil.
15. Close the printhead front cover.
16. Reconnect the printer to the pneumatic supply and unlock the mains elec-
trical isolator.
17. Switch the mains isolator ON.
18. When requested, press the System button.
19. Run a test product to check functionality.
Z - Axis Motor
Replacement
The z-axis motor is mounted to the mounting plate at the rear of the assembly.
Two linear guides are mounted on the plate with the bearing section mounted
on the dispense body. In operation, the motor lifts the dispense body until it
reaches the end stop. The auger assembly is housed in the dispense body. The
Drive Belt
Cover
Cap Head Screws (4)
Drive Pulley
Driven Pulley
38.24 Technical Reference Manual Chapter Issue 4, Nov 19
STINGER
REPLACEMENT PROCEDURES
z-motor assembly provides the various height elements of the stinger operation.
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead cover.
3. If fitted, remove the stencil.
4. Pull the camera carriage to the front of the printer.
5. Remove the two M2.5 x 8 countersunk head screws, which secure the
cover.
6. Remove the cover.
7. Remove the syringe assembly so that it out of the way.
8. Remove the two M3 x16 cap head screws that hold the level sensor in place.
9. Remove the level sensor and place it is out of the way.
10. Remove the three M3 x 8 socket head screws of the actuator plate.
11. Unscrew the actuator plate up the thread of the motor shaft.
12. Unplug the connector and remove the connector from the motor.
13. Lift the dispense body, up to the end stop, to give access to the motor
mounting screws.
14. In-turn; slacken off the four M2.5 x5 cap head screws that hold the motor to
the mount plate.
15. Remove the motor and return spring assembly.
16. Replace, with new, the motor and the return spring.
17. Plug the motor drive connector back into the motor.
18. Refit to the dispense body.
Cover
Syringe Assembly
Linear Guide Bearings
End Stop
Mounting Plate
Z-Axis Motor
Level Sensor
Dispense Body
Actuator Plate