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Section 8<br />
OUTER FOLD ROLLERS<br />
SERVICE<br />
Adjusting Screw & Locknut -<br />
Roller Pressure<br />
Calliper<br />
Paper<br />
Spring<br />
Spring Pad<br />
2mm<br />
Adjusting Screw & Locknut -<br />
Spring Pressure<br />
Calliper Pad<br />
Calliper Jaw<br />
Polyurethane Insert<br />
Outer Fold Roller - Moving<br />
Grooved Section<br />
Main Roller - Centre<br />
Paper Strips<br />
Safety Rings<br />
Pressure Spring & Gap Setting ................................... Fig 8.41<br />
8.4 .......Outer Fold Rollers - Gap Setting<br />
The fold roller gap setting (often called roller pressure), is the most<br />
important adjustment on the machine and great care should be<br />
taken to ensure that the fold rollers are set correctly, but note that<br />
the bottom roller is set with a slightly wider gap than the top and<br />
back rollers.<br />
A) Cut some 70gsm (14lb) bond into strips 10mm (3/8”) wide<br />
and insert a piece between the calliper jaws on each side of<br />
the machine and wind two strips of the same paper (one at<br />
each side) between the fold roller being set and the centre<br />
roller. (For the top and back rollers wind the strips between<br />
the safety rings. For the bottom roller wind the strips<br />
between one of the polyu’ inserts and a grooved section).<br />
PAGE 22<br />
FOLDING
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