Service Instructions Automatic Single-Head Serging Machine 1265-4
Beisler GmbH
C-21
C.5
Maintenance
C.5.14 Adjusting the stacker control cams
Fig. 12:
The motion sequence of the individual stacker linkages is con-
trolled by the roller valve
1
and by the speed of the pneumatic cylin-
ders
7
.
To change the beginning or the end of a motion section, the position
is shifted along the start cam
4
or along the closing cam
5
on the
linkage.
The speed of the motions can be changed using the throttles
6
and
8
at the pneumatic cylinders.
Changing the cam position:
1. Loosen the locating screw
2
or
3
of the correspon-
ding cam.
2. Shift the start cam
4
or the closing cam
5
.
3. Tighten the locating screw.
Setting the speed of the motion sequence:
1. To change the speed of the forward motion, rotate the
ajusting screw of throttle
6
.
2. To change the speed of the rearward motion, rotate
the adjusting screw of throttle
8
.
3. Directions of rotation:
Rotate throttle counterclockwise to increase the
speed.
Rotate throttle clockwise to reduce the speed.
Coordination of the motion sequence:
If the roller valve switches early, the linkage strikes. The
distance between the start cam and the roller valve con-
tact
5
must be increased.
If the roller valve switches late, the motion sequence is in-
terrupted. The distance between the start cam and the
roller valve contactor must be reduced.
The positioning of the cams must ensure that the closing
cam switches the motion of a linkage off when the start
cam of the subsequent linkage has actuated the contact
at the roller valve. The motion sequence of the stacker
consists of six steps:
1. Cylinder 1 picks up.
2. Roller valve 12 is activated.
Cylinder 2 lifts.
3. Roller valve 32 is activated.
Cylinder 3 throws over.
4. Roller valve 11 is activated.
Linkage rearward motion starts.
5. Roller valve 22 is activated.
Cylinder 2 lowers.
6. Roller valve 14 is activated.
Cylinder 1 returns to basic position.
Fig. 12
