Nordson_EFD_Automated_Dispensing_Systems_Maintenance_Guide.pdf - 第23页
23 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. Automated Dispensing Systems Maintenance & Parts Guide 10 Measure the tension on …
Automated Dispensing Systems Maintenance & Parts Guide
22 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Timing Belt and Motor Replacement: YAxis (continued)
5
a. Remove two (2) screws that fasten the
timing belt fixing base and then detach the
fixing base from the Yaxis linear guideway
plate.
b. Move the timing belt and timing belt fixing
base to a work space away from the robot.
Timing belt fixing
base screws
a
6
Remove the four (4) screws that fasten the
timing belt cover to the timing belt fixing base
and then remove the old timing belt from the
assembly.
Timing belt fixing base
Timing belt
cover
7
a. Match the sawtooth pattern of the new
timing belt to the sawtooth pattern on the
timing belt fixing base.
b. Secure the timing belt cover to the timing
belt fixing base with the four (4) screws
removed previously.
a
Timing belt
fixing base
8
a. Move the timing belt and timing belt fixing
base assembly under the Yaxis linear
guideway plate. Ensure that:
• The timing belt fixing base is on the left
side of the loop as viewed from the front
of the robot.
• The belt cover is the left‑most part of
the assembly, closest to the Yaxis linear
guideway.
b. Place the timing belt around the idler and
timing pulleys, then secure the timing belt
fixing base to the Yaxis linear guideway
plate with the two (2) screws removed
previously.
NOTE: The timing belt should still be loose.
9
To add tension to the belt, tighten the timing belt adjusting kit base screw that sits in the front opening
of the robot where the control assembly was previously installed.
Continued on next page
Replace the YAxis Timing Belt (continued)
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Automated Dispensing Systems Maintenance & Parts Guide
10
Measure the tension on the timing belt as
follows:
a. Move the Yaxis linear guideway plate to the
rear‑most position.
b. Enter the timing belt mass, width, and span
(length) into the tension meter. Refer to
“Timing Belt Mass, Width, and Span Data”
on page16 for these values.
c. Hold the meter 20 mm (0.8") from the timing
belt, then strum the belt (as if it were a guitar
string).
d. Observe the measurement displayed on the
meter:
• If the tension is within 50–70 N•m
(37–52ft‑lb), the tension is correct
• If the tension is outside 50–70 N•m (37–
52ft‑lb), adjust the timing belt adjusting
kit base screw again and repeat the
tension measurement. Repeat as needed
until the tension measures 50–70 N•m
(37–52ft‑lb).
c
Replace the YAxis Motor
11
Disconnect the Yaxis motor cable.
NOTE: The Yaxis motor is accessed from the
rear opening of the robot where the control
assembly was previously installed.
Yaxis
motor cable
Location of the Yaxis
motor
12
10
12
Release the Yaxis timing belt from the timing
pulley attached to the Yaxis motor.
NOTE: For detailed instructions on releasing the
timing belt, refer to “Replace the YAxis Timing
Belt” on page21.
13
Remove the four (4) screws that mount the
Yaxis motor to the robot, then pull the motor
away from the robot.
Timing Belt and Motor Replacement: YAxis (continued)
Continued on next page
Replace the YAxis Timing Belt (continued)
Automated Dispensing Systems Maintenance & Parts Guide
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Timing Belt and Motor Replacement: YAxis (continued)
14
Remove the two (2) set screws on the timing
pulley and then pull the timing pulley away from
the motor.
15
a. Assemble the timing pulley onto the shaft of
the new motor; align the timing pulley such
that the two (2) set screws contact the two
flat surfaces of the motor shaft.
b. Ensure that the distance from the base of
the timing pulley to the top of the motor is
4mm (0.16").
4 mm
(0.16")
a b
16
Place the new Yaxis motor into position and secure it with the four (4) screws removed previously.
17
Place the Yaxis timing belt around the timing pulley.
18
Repeat steps 9 and 10 of this procedure to
measure the tension on the timing belt and
observe the measurement displayed on the
meter:
• If the tension is within 50–70 N•m (37–
52ft‑lb), the tension is correct
• If the tension is outside 50–70 N•m (37–
52ft‑lb), adjust the timing belt adjusting kit
base screw again and repeat the tension
measurement. Repeat as needed until the
tension measures 50–70 N•m (37–52ft‑lb).
Reinstall the YAxis and Control Assembly Covers
19
Move the control assembly back into its position underneath the robot stage.
20
Place the control assembly cover on the back of the robot and secure it with the perimeter screws
removed previously.
21
Secure the control assembly to the control assembly cover with the screws removed previously.
NOTE: The quantity and location of the screws that secure the control assembly to the control
assembly cover differs for each robot model. Refer to “Control Assembly Cleaning” on page14 for
the control assembly cover screw locations.
22
Reinstall the Yaxis cover. Refer to “Reinstall the YAxis Cover” on page7 for detailed instructions.
23
Place the fixture plate on the Yaxis linear guideway plate and secure it with the four (4) screws
removed previously.
Replace the YAxis Motor (continued)