Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
9-90
9.8
Bottom Flap Folding Troubleshooting
The WF-10T is unique among fully automatic bottom flap folding machines in that it employs a
unique system of flap folding technologies working in unison. The function of the flap folders
is to
integrate the folding of the minor flaps and major flaps within the shortest possible time and travel
distance.
9.8.1 Rear Minor Flap Does Not Fold
•
Ensure that air pressure is maintained at the correct machine setting, and that adequate
air volume is being consistently delivered. Lack of air pressure and/or volume can result
in poor flap folding performance.
•
Verify that the scoring on the flaps is adequate, and that they will fold easily and cleanly.
•
Cases with flaps shorter than 3” may have to be run on a modified machine.
9.8.2 Rear Flap Folds, Releases, and Turns Backwards
•
Verify that the center ski is set in its correct position;
a. for cases with small minor flap heights, set the ski towards the infeed end of the
conveyors.
b. for cases with median minor flap heights, set the ski near the middle of the
adjustment slot.
c. for cases with large minor flap heights, set the ski towards the discharge end of the
machine.
9.8.3 Bottom Major Flaps Bind On Center Ski
•
Verify that excessive lateral pressure has not been applied to the case, causing the flaps
to bind on the vertical side of the ski.
9.8.4 Major Flaps Overlap in Center of Case
•
Check for excessive lateral pressure from the belts.
•
Verify that the flaps are not too long as a result of a poorly manufactured case.
9.8.5 Bottom Major Flaps Have a Gap in Center
•
Verify that side-belt compression is squeezing bottom flaps together.
9.8.6 Major Flap Leading Edges Wrinkle After Taping
•
Verify that the tape head is not adjusted too high.
•
Ensure that the tape head bracket has not been set too high
NOTE: This adjustment is used for extremes of range, and
should normally be set in the middle position.