Baumfolder BAUM18: Pile Folder 1st Station (from 2005 on) - Manual (Page 41)

PAGE 41 TP10313
Fixing Crooked Perforations
If misaligned perforations appear after the parallel
folding station, first check for correct squareness setting of
the register guide relative to the buckle plate stop. If square,
the sheet deflector following the last buckle plate must be
set back slightly on the side on which the sheet is tending to
advance.
Adjustment can be made by inserting a card underlay of
suitable thickness. The affected sheet side then has to travel
a greater distance, so a perfect perforation can be made
without changing the fold position
.
Bottom Plate Lip Adjustment
Since paper qualities and thicknesses vary greatly, it is
essential that buckle plates are properly adjusted.
With thin papers, the lower buckle lip is brought slightly
forward. With thicker paper it must be set further back. The
buckle plate configuration is directly related to the thickness
and stiffness of the paper being folded. This relationship
must be taken into account if a high quality fold is to be
achieved.
The adjustments can be made by setting the nuts on the
top edge of the buckle plate to give the necessary reading
against a scale on the side buckle plate post. A pointer
marks the normal setting of the buckle plate. The inside
width between the buckle plate section rods can also be
varied without altering the setting of the buckle throat.
Figure 42
Figure 43
Figure 44
Figure 46
Figure 45