00195760-0102_UM_D3_SR605_EN.pdf - 第341页

User Manual SIPLACE D3 6 Station extensions From software version SR.605.xx 07/2008 EN Edition 6.19 SIPLACE Productivity Lift 341 6.19 SIPLACE Productivity Lift 6.19.1 Concept of pa rallel placement Placement lines are g…

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6 Station extensions User Manual SIPLACE D3
6.18 Vacuum pump From software version SR.605.xx 07/2008 EN Edition
340
6.18 Vacuum pump
Item no. 00119794-xx Vacuum pump, HF/X/D3, 220 V
Item no. 00119795-xx Vacuum pump, HF/X/D3, 110 V
Item no. 00119792-xx Vacuum pump operation conversion kit
Every Collect&Place head has a separate vacuum generator that supplies the holding and place-
ment circuit with the vacuum that it needs. The vacuum generator works on the Venturi principle.
The compressed air consumption of the machine is, for example, around 550 Nl/min. This means
that the compressed air supply must be sized accordingly. If the owner does not have sufficient
capacity locally, the associated investment costs would be high, so we supply a vacuum pump that
will provide the necessary vacuum.
Other advantages of using the vacuum pump are:
– It roughly halves the machine's compressed air consumption.
– It reduces the input pressure.
– The machine can be easily integrated into existing lines.
– The ongoing operating costs reduce according to the energy costs.
The vacuum pump is maintenance-free and 100% oil-free. They have sufficient capacity to supply
the holding circuits of the Collect&Place heads.
PLEASE NOTE 6
There are currently vacuum pumps only for the 12-segment and 6-segment Collect & Place
heads.
Compressed air
consumption
without
vacuum pump
Compressed air
consumption
with
vacuum pump
a
Compressed air consumption with
4 tape cutters and in relation to the
placement head configuration
C&P / C&P / TH 550 Nl/min 300 Nl/min
a) Under normal atmospheric conditions at 20°C and 1013 hPa
User Manual SIPLACE D3 6 Station extensions
From software version SR.605.xx 07/2008 EN Edition 6.19 SIPLACE Productivity Lift
341
6.19 SIPLACE Productivity Lift
6.19.1 Concept of parallel placement
Placement lines are generally arranged in series and are linked to one another serially. The
placement program is processed sequentially while the PCBs are transported from one machine
to the next. This means that the placement of a PCB is distributed between various machines.
6
Fig. 6.19 - 1 A comparison of serial and parallel lines
When machines are connected in parallel, the components to be placed by individual machines
are combined. Several machines work through the same placement program. They place all the
components on one machine that would be distributed between several machines with serial pro-
cessing. When one machine runs out of capacity, the PCBs are moved to and placed at the next
machine with the same placement program. This combination of machines with the same compo-
nents to be placed is known as a group or “cluster”.
Serial line
Parallel line
Underfloor conveyor
Group (cluster)
Horizontal/
vertical lift
6 Station extensions User Manual SIPLACE D3
6.19 SIPLACE Productivity Lift From software version SR.605.xx 07/2008 EN Edition
342
6.19.2 Implementing parallel placement
Lines with machines arranged in parallel take up a lot more space, so the parallel placement con-
cept was implemented with an underfloor conveyor and horizontal / vertical lift (HV shuttle). The
machines are still arranged in series, but the lift units and underfloor conveyors allow the line to
be operated in parallel. In this way, SIPLACE lines remain almost as compact as before.
Underfloor conveyor
Two conveyor belts carry empty or placed PCBs underneath the machines (see Fig. 6.19 - 1, page
341
). The maximum component height is 17 mm.
Horizontal/vertical lift (horizontal/vertical shuttle)
There is an HV shuttle at the start of a line, between the machines and at the end of the line. It
carries the PCBs between the underfloor and processing levels, and between the two tracks on
the underfloor conveyors.
6
Fig. 6.19 - 2 Horizontal / vertical shuttle (HV shuttle), conveyor track change and lift function
Horizontal conveyor
HV shuttle
Lift function
Vertical conveyor
Unplaced
Placed
Standard
conveyor level
Underfloor
conveyor level
HV shuttle
Conveyor track change