Section 3 - Top Flap Folding - Pro Mach Wexxar BEL Series Operation & Service Manual

B E L 2 5 2 F u l l y A u t o m a t i c U n i f o r m C a s e T a p e S e a l e r
Problem: Frequent Belt Breakage.
Belt life will depend on the conditions of machine use but frequent breakage may be due to one or more
of the following conditions:
•
Belt tracking. Check that the belt does not try to ride up or down on the pulleys. See belt tensioning
and tracking adjustment under Service and Maintenance Procedures
•
Belt Tension. Belts may be over-tensioned - correct setting allows approximately one inch of slack at
center point of conveyor.
•
Idler and drive pulley rotation. Check that pulleys rotate freely and that bearings are not excessively
worn or seized.
•
Rotation direction of belt. Look on the back of the belt for the type of join. Stepped-lap splice belts
must move in the direction of the arrow marked on the inside of the belt. Newer style "finger"-
spliced belts can move in either direction..
Problem: Machine Jams Frequently.
Turn off the machine as soon as jam occurs and before clearing jam. Open Belts and raise the top tape
head, remove jammed case and debris. Check for jam causes:
•
Top tape head is adjusted too low.
•
Product is overfilled or inconsistent causing intermittent jams.
•
Top flaps are not folding correctly, flaps then hit top ski or tape head mechanism.

Section 3 - Top Flap Folding

All BEL Machines that automatically fold the top flaps of cases use the unique and patented Snap Folder
system.
The function of the Snap Folders is to integrate the folding of the minor flaps and major flaps within the
shortest possible time and travel distance. In each Snap Folder module the rear minor flap and major flap
folders are activated through a single mechanical, progressively linked drive system powered by a
pneumatic cylinder.
Problem: Rear Minor Does Not Fold
•
Check to ensure air pressure is maintained at correct machine setting, and that adequate air volume is
being consistently delivered. Lack of air pressure and/or volume can result in poor flap closing
performance.
•
Make sure that the Snap Folder modules have been correctly positioned for width and depth of box
being sealed.
•
Check operating speed of Snap Folders. If speed is set too low the rear minor flap folders will not be
activated quickly enough to fold the rear minor flap. Consult machine service manual for procedure
on adjusting flow control speed regulators.
65-06-11 5/18/2007
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