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7 Station extensions User Manual SIPLACE HF Series 7.8 PCB alignment Software Version SR. 505.xx 05/2004 US Edition 322 7.8.2 Description of the functions The PCB is tr ansporte d into the plac ement area until the las e…
User Manual SIPLACE HF Series 7 Station extensions
Software Version SR.505.xx 05/2004 US Edition 7.8 PCB alignment
321
7.8 PCB alignment
7.8.1 General
PCBs to be processed sometimes have a length to width ratio of 1:2 or worse. This means that
the shorter side of the PCB points in the direction of travel. During travel, such PCBs may twist
slightly and, as a result, the fiducials no longer lie within the PCB vision camera's search window.
In this case, the "PCB alignment" option ensures that these PCBs are realigned precisely at the
stopping position.
If PCBs with recesses in the direction of travel are processed, this may result in different process-
ing positions on machines with mechanical stoppers (HS-50, S-25 HM, F5 HM) and on machines
that monitor this position with laser light barriers (HF, HS-60, S-27 HM). The "PCB alignment" op-
tion ensures that the PCBs are stopped at the same position on all PCB conveyors. The "PCB
alignment" option is available for both single and dual conveyors.
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Fig. 7.8 - 1 PCB alignment
(1)Lifting table
(2)PCB stop
7 Station extensions User Manual SIPLACE HF Series
7.8 PCB alignment Software Version SR.505.xx 05/2004 US Edition
322
7.8.2 Description of the functions
The PCB is transported into the placement area until the laser light barrier triggers the stop signal
for the PCB conveyor. The lifting table with the PCB stops then moves up into a position in which
the PCB is not yet clamped and can still be moved by the conveyor belts. The two PCB stops are
level with the PCB, and the PCB supports (magnetic pins) are already in contact with the PCB.
The two conveyor belts move the PCB against the PCB stops and align them at the same time.
The lifting table then moves into its top end position, clamps the PCB and releases it from the PCB
stops so as not to affect the placement process. After the placement process, the lifting table and
PCB alignment are lowered and the PCB is moved on.
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User Manual SIPLACE HF Series 7 Station extensions
Software Version SR.505.xx 05/2004 US Edition 7.9 Feeder cover flap
323
7.9 Feeder cover flap
The feeder cover flap is installed over the component feeder area. It is designed to prevent a head
crash with an upright feeder retainer that has not been engaged correctly. The feeder cover flap
can also prevent the front panel of feeders entering the placement head travelling range due to
incorrect operation.
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Fig. 7.9 - 1 Feeder cover flap for locations 1 and 3
(1)Feeder cover flap
(2)Mechanical lock
(3)Switch in the emergency stop circuit
The feeder cover flap is available in two versions: one for location 1 or 3 and one for location 2 or 4.
The switch for the feeder cover flap is looped into the emergency stop circuit. The feeder cover
flap must be locked mechanically, which causes the switch to close the open emergency stop cir-
cuit.