1-50
S-4001 ISBH+I SM 30°
Released: 09/2017
E-mail: [email protected]; webside: amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
E - STANDARD MACHINE ADJUSTMENT
15. THREAD TRIMMING
Trimming mechanism ensures the correct thread trimming after sewing the last
stitch. A the trimming hook moves in the direction of arrow, both thread loop legs
A and B are pulled forward. When the thread hook approaches the end of the
stroke, leg A contact the trimming knife, cutting the thread.
15.1. Trimming Cylinder Adjustment
a) tilt the machine head on the rest pin and close the air supply. Extend the
piston
1
of the cylinder
2
to the maximum position.
b) check to be certain that the cylinder does not push the lever
3
too high
and into contact with the bedplate casting
4
. If no clearance exists, adjust
as described in c, d, and e below.
c) loosen the screw
6
d) to obtain the correct position of the lever
3
, loosen the nut
5
and turn the
cylinder piston
1
in or out as needed
e) tighten the nut
5
and the screw
6
. After this adjustment check if no axial
clearance exists on the shaft
7
.
f) if the axial clearance exists on the shaft, loosen the screw
6
, move the
shaft
7
to the left so that the locking ring
8
touches the recess in the
plate
3
. Move the lever to the right and tighten the screw
6
.
15.2. The Trimming Hook
11
Adjustment
a) push the piston
1
of the trimming cylinder
2
to the maximal position and
loosen the screw
9
of the trimming actuator
10
.
b) turn the trimming actuator
10
and set the clearance 1.0 mm between the
throat plate and the point of the trimming hook.
c) tighten the screw
9
of the trimming actuator
10
.
d) open the air supply and check by switching the valve of the trimming cylin-
der if the actuator
10
does not hit the bedplate casting.