Printer 600 Board Support Tooling Module.pdf - 第11页
%2$5'68 33257722/,1* 02'8/( )250)/(; 722/,1* Chapter Issue 2 May 03 Technical Reference Manual 19.11 The timers a r e connect ed in series and four of t hese can each contr ol a pai r of tooling modules. Ea…
19.10 Technical Reference Manual Chapter Issue 2 May 03
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Operation With all the FormFlex pins in the lowered position, a board is loaded to the
machine print station. The FormFlex setup plate and weights are placed
centrally over the board and transport rails, the rising table is raised to print
height.
When the operator switch on the machine covers is selected, air pressure is
applied to the FormFlex tooling module via an air pilot valve fitted to the
sequencer and peripherals assembly. Pressure is applied to the outer surface
of the fluid filled butyl rubber tube. Fluid pressure begins to act on the fluid cut-
off valve.
Fluid flows through the flow restrictor on the front face of the cut-off valve.
Initially, the fluid flows through the bores in the valve stem to the channel
connecting the FormFlex pins causing the pins to rise. Hydraulic pressure
begins to act on the valve membrane causing the valve stem to move against
the valve compression spring.
Once the FormFlex pins have conformed against the stencil, board or compo-
nent, movement of the cut-off valve stem completely seals the channel connect-
ing the FormFlex pins. This prevents any additional fluid flow, thus locking the
FormFlex pins in this configuration.
Figure 19-9 Cross Sectional View of Tooling Module
Five pneumatic timers situated on the sequencer and peripherals assembly, are
used to control the sequence of raising the FormFlex pins and operating the
pneumatic indicator when all the pins have risen.
Pneumatic
Pressure
Fluid Cut-Off Valve
FormFlex Pins
Pneumatic Pressure
Butyl Rubber Tube
Fluid Pressure
Valve Stem
Valve Membrane
Flow Restrictor
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Chapter Issue 2 May 03 Technical Reference Manual 19.11
The timers are connected in series and four of these can each control a pair of
tooling modules. Each of the four timers introduce a 20 second cumulative
delay in raising the FormFlex pins. The first pair of tooling modules are
connected directly to the operator switch consequently, the FormFlex pins in
these modules begin to rise as soon as the switch is operated.
The fifth timer is the final timer to operate and controls the pneumatic indicator,
displaying to the operator that all the FormFlex pins have risen.
Once the FormFlex pins have conformed to the new product profile, the
FormFlex setup plate is removed. The remainder of the machine setup is
completed and the machine is set to Run. The FormFlex pins remain in this
configuration until a product changeover is required.
If due to any board or component variation a FormFlex pin is displaced, any
displacement is spread across the other 43 FormFlex pins in that module.
To reset the FormFlex pins for another product, the internal reset switch is
operated. Air pressure is applied to the vacuum ejector to produce vacuum
which is applied to the tooling module.
Pressure is removed from the butyl rubber tube and vacuum is applied, return-
ing the tube to its original profile. Fluid returns to the butyl rubber tube releasing
pressure on the cut-off valve stem allowing the stem to return under spring
force. The valve stem releases the fluid supporting the FormFlex pins enabling
the pins to lower.
19.12 Technical Reference Manual Chapter Issue 2 May 03
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Pneumatic Schematic
Mains Air
Connection
5 bar (min)
To
Pneumatic
Manifold
Filter
Regulator
Assembly
Pressure
Sensor
Ball Valves
Tooling Modules
P
A
R
P
A
R
P
A
R
P
A
R
2
1
3
2
1
3
2
1
3
1
2
3
4
5
6
7
8
9
10
Pneumatic Indicator
Air Pilot
Operated Valves
2
1
3
tttt
P
A
R
Pneumatic Timers
Zn
Zn
Zn
Zn
Zn
2
1
3
t
OR
NOT
Vacuum Ejector
Operator Switch
(Non-Latching Manual Valve)
Reset Switch
(Non-Latching Manual Valve)
13
2
2
2
2
3
3
3
3
1
1
1
1
2
3
1
Yes Gate
Pressure/Vacuum Gauge