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CIRCUIT TECHNIQUE
_A
+
B_
+
1 2 3 4
I.C.
a0
a1
+
C_
c1
5 6 1
b0
b1
c0
B
A
C
b0
a1
a0
c1
c0
b1
b0 b1
a0 a1
c0 c1
EM.
F.C.
I.C.
Fig. 62
Development of a sequence
Througha safetydoor, it is possible to reach the insideof amechanical structurewhereanobject canbepositioned
in order to be clamped and then stamped.
The conditions required to start the cycle are: the safety door is closed and the
I.C.
button remains actuated by
the operator until themarking operation is executed. Should the door be opened or the button released, the piston
rod/piston of the two cylindersmust return to their initial position.
Figure 63
Pos. 1
: the component is inserted into themechanical structure and the safety door is closed.
Pos. 2
: by pressing the
I.C.
button the piston rod/piston of cylinder
A
used in the blocking operation executes the
positive stroke.
Pos. 3
: upon reaching the positive end position, and clamping the component, themarking operationwith cylinder
B
can begin.
Pos.4
: once themarkingoperation iscomplete, thepiston rod/pistonof the twocylinders return to their initial positions.
At this stage it is possible to release the
I.C.
button, open the door, remove themarked item and insert the new one.
1
2
3
4
Component
insertion and safety
door closure
I.C. command
component
blocking
Clampingoperation
Repositioning
A
B
A
B
A
B
A
B
Fig. 63
5
165
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CIRCUIT TECHNIQUE