Looping Stroke And Needle Protection - Duerkopp Adler 511 Service Instructions Manual

3.6

Looping stroke and needle protection

7
9
9
22
Caution – Risk of injury !
Turn the main switch off.
Check and adjust the looping stroke and needle protection only
when the automatic bartacker is switched off.
Rule and control
The needle bar is provided with four notches as an adjusting aid.
The two notches on the higher position are for the needle system DPx5
(511-211/-212), those on the lower position are for the needle system
DPx17 (511-213).
The looping stroke is defined as the course of the needle 2 from its
bottom dead centre to the point where the hook tip 1 is at the level of
6
the middle of the needle.
In looping stroke position, the needle should be pushed away slightly
from the driver (needle protection).
–
Insert a new, straight needle.
–
Move needle bar 8 into its lowest position by turning the
handwheel.
8
–
Turn handwheel in rotation direction until the lower notch 6 (DPx5)
or notch 7 (DPx17) stands at the bottom of the needle bar bushing
connection 9.
–
Press hook 5 against the driver 4 in the opposite direction of
rotation.
–
Check whether the hook tip 1 is at the level of the middle of the
needle.
–
Check whether the needle is pushed away from the driver tip a little
bit (needle protection).
Adjusting
7
–
Loosen screw 3 at the driver 4.
–
Twist driver accordingly.
8 –
Shift driver axially in such a way that the needle abuts on the driver
tip and is pushed away a little bit.
–
Tighten screw 3.
2
1
5
4
3