Changing The Work Holder; Adjustment Of The Thread Take Up Spring - JUKI PLK-G4030R Technical Manual

7-15. Changing the work holder

(1) Before changing the work holder (No.1), remove the holder block (No.4) that is secured with the
screw (No.3). It will come off by pressing the work holder (No.1) down from the area engaged with
the pin (No.6) of the work holder arm (No.5).
(2) Prepare another work holder and securely engaged its U shaped ditch (No.2) with the pin (No.6) of
the work holder arm (No.5). At this time, make sure that there is no play in the
➔ arrow direction.
<3>
<4>
<5>
<6>
<2>
<1>: Work holder <2>: U shaped ditch
<5>: Work holder arm <6>:Pin

7-16. Adjustment of the thread take up spring

(1) Loosen the set screw (No.2) and turn the whole thread tension regulator (No.3) then, adjust the thread
take up spring (No.1) stroke to be in 9 to 10mm, which is standard stroke.
(2) Insert the screw driver into the slit of the thread tension regulator and adjust the thread take up spring
tension. When tightening the screw driver clockwise, the thread take up spring tension becomes tight,
and when loosening the screw driver counterclockwise, the thread take up spring tension becomes
loose. For the adjustment of the thread take up spring tension, tighten the set screw (No.2) so that the
whole thread tension regulator does not turn.
9~10mm
<1>
<3>: Screw <4>:Holder block
<1>
<2>
- 30 -
No.3, No.4 are only used for PLK-G6030R
<1>: Thread take up spring
<3>
<2>: Set screw
<3>: Thread tension regulator