18
13. Troubleshooting
Problem
Reason
Solution
Sealing belt is off tracking. Driving wheel shaft is not parallel to
driven wheel shaft.
Adjust two adjusting screws on driven
wheel seat.
Sealing belt is easy to
break.
1. Too much tension on sealing belt.
2. Sealing belt is off tracking.
3. Crease on sealing belt.
4. Film or other dirt attached to the
surface of sealing belt.
5. Sealing belt is easy to burn.
1. Adjust the vertical adjusting screw
on driven wheel seat to decrease
tension on sealing belt.
2.
（
see the point above
）
3. No crease on sealing belt.
4. Clean its surface in time.
5. Clearance between two heating
blocks is too small or temperature
is too high.
Embossing
is
in
low
definition.
1. Embossing roller is worn out.
2. Pressure spring on embossing roller
is not tightened to enough degree.
1. Replace embossing roller
2. Adjust the embossing roller
’s
tightening spring.
There is resistance when
the
sealing
belt
is
conveying.
The clearance between heating blocks
or cooling blocks is too small, so the
friction is too much.
Adjust the clearance between sealing
belts properly, which should be about
thickness of packing bag in one layer.
So that not only ensure the sealing
fastness, high-definition embossing,
but not make the two ends of sealing
area extend too long.
There is block or folding
phenomenon when the
packing bag is conveyed
to
pinch
roller
or
embossing roller.
Too much pressure caused by pinch
roller or embossing roller.
1. Adjust proper pressure for the pinch
roller or embossing roller, so as to
make the clearance between two
sealing belts be about thickness of
packing bag in one layer so that not
only
ensure
sealing
fastness,
high-definition embossing, but not
make the two ends of sealing area
extend too long.
2. Adjust limiting screw after adjusting
clearance.
Conveying belt is off
tracking.
The driving roller shaft is not parallel to
driven roller shaft.
Adjust two adjusting screws for driven
roller shaft (rear shaft) on conveyor.
Conveyor belt and sealing
belt
don’t
move
synchronously.
Too small tension on conveyor belt.
1. Tighten the chain of driving roller
shaft (front shaft) and middle shaft
properly.
2. Tighten the conveyor belt properly.
