Beisler 1265-4 - Manual (Page 57)

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