Wexxar WF30T, Руководство по эксплуатации и обслуживанию

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WF30T Case Former Machine Maintenance
- 9-92 -
9.7 Mechanical Maintenance
•
Observe the machine in operation, looking particularly for any uneven or excessively
noisy motions and abnormal air leaks.
•
With the machine stopped and the air
OFF
, check for smooth action without excessive
bearing wear or abnormal looseness of all moving parts. Special attention should be
given to the head
UP/DOWN
motion, which is guided by the grooved wheels on the bevel
bar. Any looseness in this subassembly can be corrected by adjustment of the eccentric
bushings. See Section 9.4:
‘Typical Maintenance Adjustments’
for further details.
•
Inspect the machine for signs of abnormal wear, such as debris caused by scraping or
grinding together of parts. All piston rods on the air cylinders should be smooth and
shiny; black, crumbly deposits are signs of seal deterioration.
•
Watch for signs of improper belt tensioning, such as the belts slipping when transporting
a heavy case. Correct belt tension is one percent stretch from the no-load position - if in
doubt, slacken the belt to no-load, make marks on the belt
" 25
apart, and re-tension to
produce a distance of
" 25
4
1
between the marks. Always tighten tension bolts equally to
maintain correct tracking.
•
Carefully observe the conveyor drivebelts and watch for signs of uneven wear (edge
fraying) which can occur if a belt is not tracking on-center of the pulleys. Adjust belt
tension and tracking as shown in Section 9.4.10:
‘Conveyor Belt Tension & Tracking’
.
•
Observe the gearmotors that drive the drivebelts for signs of oil leakage; if serious
leakage occurs, replace the gearmotor.
•
If all is okay, switch the machine
ON
and observe carefully as it processes a case,
listening for signs of air leakage or other abnormal noises.
•
All mechanical actions should be smooth and free of shock at the end of motion.
9.7.1 Vertical Alignment Procedures
The vertical relationship between the magazine feedbelts, the injector, the forming head collar,
and the forming head pinblocks are important to correct operation of the machine, and have been
factory-set before shipping the machine. In normal service, adjustments of these components
should not be necessary, but when major service work is undertaken (e.g., repair/replacement of
a major component or subassembly), it may be necessary to reset these components. See
Section 7:
‘Case Size Adjustments’
. Observe the injection of the case onto the pins. If the case
is fully
UP
to the pinblocks, or within
"
8
1
(3 mm) of this position, the vertical alignment is okay. If
the injection is too high (trying to push the top of flaps higher than the pinblocks), try raising
Dimension ‘B’ adjustment slightly or restricting the
UP
travel of the injector by adjusting the UP
shock absorber position. See Section 7.2:
‘Flat Case Height’
and refer to the ‘Injector Assembly’
drawing in the Supplementary Manual.
If the injection of the case is too low (
"
8
1
or more below the pinblocks), then the vertical
alignment requires resetting.
Proceed as follows:
NOTE: It is important to perform these
adjustments in the order given.