Duplo DF-920 Maintenance Manual

1-54 12H-M12M0-0309-0
4-10. When Folding Misalignment Along Vertical Length of Paper is Large
Cause Solution
Thrust play of the screw shaft unit
is large.
The full nut has worn out, and the
thrust play of the area connected
the screw shaft is large.
Adjust so that the thrust play becomes 0.1 to less than 0.15 mm (0.004" to
less than 0.006").
“2-6-2. Checking and adjusting the thrust play of the screw shaft
unit”
Replace the full nut.
“2-6-3. Replacing the full nut”
4-11. When Folding Misalignment Along Sides of Paper is Large
Cause Solution
Paper is conveyed skewed.
Paper lead edge and folding
stopper are not parallel.
Perform “4-1. When Paper is Conveyed Skewed”.
Adjust the parallelity of the folding stopper.
“2-6-10. Adjusting the parallelity of the folding stoppers”
4-12. Paper Jams at Folding Unit or Flattening of Folded Line Occurs During
Single Folding and When Thick Paper is Used, or Folding Wrinkle Line is
Formed at Folded Line with Thin Paper
Cause Solution
The clearance between the folding
roller and switching shaft is too
large.
Adjust the clearance.
“2-6-11. Adjusting the home position of the switching shaft
(stopping position) in single folding”
4-13. Paper Jams at Folding Unit or Flattening of Folded Line Occurs During
Folding Modes Other Than Single Folding and When Thick Paper is Used
Cause Solution
As the conveyance route is too
narrow, the thick paper does not
enter the folding rollers easily.
Increase the processing speed.
“2-6-12. (1) Setting the thick paper mode”
Change the stopping position of the switching shaft, and widen the
conveyance route.
“2-6-12. (2) Removing the stopper (collar) of the switching shaft”
4-14. When Motor Lock of Folding Plate 2 Occurs
Cause Solution
The frictional coefficient of the
cushion (urethane sheet) surface
of the switching shaft is high,
exceeding the allowed current
during motor drive.
Decrease the frictional coefficient.
“2-6-13. Switching shaft cushion (urethane sheet)”
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Duplo DF-920 Specifications

General

Brand	Duplo
Model	DF-920
Category	Folding Machines
Language	English