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1 - 47 S tudent Guide SIPLACE X Edition 09/2005 4 Servic es to the machine 47 4.3.8.2 V acuum and air kiss at T win Head The vacuum gene ration and the va cuum regulation at the T win head is a fully sophisticated new pr…
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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
46
4.3.8.1 Air distribution Twin Head
4
Fig. 4.3 - 18 air distribution TWIN-head
4
Legend
:
1. sealed
2. air supply TWIN-head segment 1 vacuum-air kiss generator
3. air supply TWIN-head segment 1 Z-axis retract unit
4. air supply TWIN-head segment 2 vacuum-air kiss generator
5. air supply TWIN-head segment 2 Z-axis retract unit
4
4
4
4
4
4
4
4
4
4
1 2 3 4 5
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Student Guide SIPLACE X
Edition 09/2005 4 Services to the machine
47
4.3.8.2 Vacuum and air kiss at Twin Head
The vacuum generation and the vacuum regulation at the Twin head is a fully sophisticated
new process. The vacuum and air kiss is not anymore seperated, as known from former vac-
uum systems we used. Furthermore, 1 venturi system is used for vacuum and air kiss by con-
trolling it through an adjustable piston. Depending on the position of this piston 3 different
states are to regulate.
4
state 1: normal vacuum generation (max. vacuum) 4
state 2: regulated and controlled vacuum 4
state 3: no vacuum, air kiss in case 4
Fig. 4.3 - 19 max. vacuum
Fig. 4.3 - 20 regulated vacuum
Fig. 4.3 - 21 air kiss
Input compressed
air 4.6 bar
1
2
3
4
air exhaust (open)
max. vacuum
Legend:
1. venturi nozzle
2. plunger for vacuum / airkiss
generation
3. vacuum / airkiss
4. exhaust pipe
Input compressed
air 4.6 bar
1
2
3
4
air exhaust (open)
medium vacuum
Input compressed
air 4.6 bar
1
2
3
4
air kiss air exhaust (blocked)air kiss
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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
48
4.3.8.3 Z-axis safety process
Another use of 4.6 bar compressed air is the Z-axis safety process. As long the machine is in a
normal mode, the Z-axis keeps position on zero digits. In case, power drops down, it must be se-
cured, the Z-axis does not remain or fall down in any down position.
This is realized by a spring, which retracts the z-axis to top position by extending. As long as there
is no fault event, the spring is pressed by a 4.6 bar compressed air pressure. In a fault event, like
power drop, the power fail mode is activated, which powers the z-axis for about 200 ms seconds
with the aid of a capacitor, located in the main power supply. This secures the Z-axis moves up
with power and with additional help through retract spring.
Fig. 4.3 - 22 Z-axis retract unit
retract device