Printer 600 Pneumatic Module.pdf - 第9页
31(80$7,& 02'8/( 31(80$7,& '(9,&(6 Chapter Issue 3 May 03 Technical Reference Manual 24.9 Single Acting Cylinders Single act ing cylind ers only requi re compres sed air for movement in one direct…
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24.8 Technical Reference Manual Chapter Issue 3 May 03
Gauge Each regulator assembly has a gauge to indicate the operating pressure. Each
gauge has a scale to read both psi and bar, except the mains air input gauge
which reads MPa. 1bar = 0.1MPa.
Sensor An adjustable pressure sensor, part of the mains air regulator assembly and set
to 3bar, senses whether the compressed air input is at the minimum level
required. See Sensors and Motors Chapter for further information.
Toggle Switch The toggle switch acts as a two way manual switching device for activating and
de-activating the chase screen clamps.
NOTE
The toggle switch is not fitted to all machines.
Activating the switch (down position) connects the compressed air flow to Port
A of each of the four single acting cylinders (version 1 type).
De-activating the toggle switch (up position) cuts off the compressed air to each
actuator, automatically retracting the piston by spring action.
Figure 24-6 Toggle Switch
Regulator Setting
Main Air Input 5 bar nominal
Paste Dispenser 3 bar (43 psi) maximum
Screen Cleaner Solvent
(Blue USC)
1 bar (14.5 psi) maximum
Screen Cleaner Solvent
(Vortex)
0.1 bar
Board Clamps 4.5 bar (62.25psi) nominal
ProFlow - Software Regulator
ProFlow Idle Pressure
ProFlow Paste Pressure
0.2 bar
0.2 - 4 bar
Symbol
De-activate Clamps (OFF)
Activate Clamps (ON)
(Switch Position)
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Chapter Issue 3 May 03 Technical Reference Manual 24.9
Single Acting
Cylinders
Single acting cylinders only require compressed air for movement in one
direction. The movement of the piston in the other direction is effected by a
spring. There are two versions of the single acting cylinder fitted to the machine.
Figure 24-7 Single Acting Cylinder and Symbol
Version 1 - With air connected to Port A, compressed air extends the piston.
When the air is disconnected the spring retracts the piston (cylinder rest state).
Version 2 - With air connected to Port B, compressed air retracts the piston.
When the air is disconnected the spring extends the piston (cylinder rest state).
Figure 24-8 Single Acting Cylinder Cross Section
Extended
Retracted
Version 1 (Symbol)
Version 2 (Symbol)
Port A
Port B
Version 1
Version 2
Port A
Port B
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24.10 Technical Reference Manual Chapter Issue 3 May 03
Double Acting
Cylinders
The force exerted by the compressed air is required to move the piston in each
direction. A definite force is applied on both advance and return movements.
Figure 24-9 Double Acting Cylinder and Symbol
Double acting cylinders allow work to be performed in both directions. Air
entering at Port A acts against the valve plate (1) driving it backwards, retracting
the piston to which it is attached and exhausting air through Port B. To extend
the piston air enters Port B and the process repeats in the other direction.
Figure 24-10 Double Acting Cylinder Cross Section
Piston Extended
Piston Retracted
Symbol
1
Port
A
Port
B