SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第237页
1 - 37 S tudent Guide SIPLACE HF/HF3 Edition 09/2005 6 Colle ct &Place-Head / DLM2 37 6.3.27 Z-axis down special mode “vacuum in upper position” Fig. 6.3 - 24 Z-axis downwards special mode “vacuum ON in upper positio…
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Student Guide SIPLACE HF/HF3
6 Collect &Place-Head / DLM2 Edition 09/2005
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6.3.25 Pick up sequence detailed: Z-axis downwards
Fig. 6.3 - 22 Pick up sequence detailed: Z-axis downwards
6.3.26 Pick up sequence detailed Z-axis upwards
Fig. 6.3 - 23 Pick up sequence detailed Z-axis upwards
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Start gantry axes to the pick up position next feeder &Communica-
tion to component table: Start signal to Gantry axes.
– Next feeder signal / this opens feeder flap.
End signal X-, Y- & Star-axis:
end signal Star-axis..
..activate vacuum check:
Segment sealed? before pick up X / Y end signals existing
Z-axis starts:
Z-axis starts positioning downward
Light barrier (LB) above:
enables LB bottom
LB bottom switches:
end signal Z-axis positioning downwards;
activate valve drive to vacuum.
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LB bottom switches:
end signal positioning Z-axis down; valve drive to vacuum; both actions
finished?
Start signal to move up
Z-axis started:
– positioning Z-axis upwards
LB above switches:
– reset LB bottom signal; 1
st
vacuum request component picked up?
(return OK) Enables start signal for gantry axes
Communication to component table:
– „close feeder flap“ and stroke feeder
Z-axis end signal (Z-axis on 0-position DP-station swiveled off):
– 2nd vacuum request component picked up?
Enable start for Star-axis
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Student Guide SIPLACE HF/HF3
Edition 09/2005 6 Collect &Place-Head / DLM2
37
6.3.27 Z-axis down special mode “vacuum in upper position”
Fig. 6.3 - 24 Z-axis downwards special mode “vacuum ON in upper position”
6.3.27.1 Advantage of special mode "early vacuum"
This "early vacuum" offer you:
– increased pickup reliability with tiny nozzles like 911/ 904. At Z-axis travel time the vacuum in-
crease in our nozzlet; because only less air flow in at top of the nozzle. The vacuum inside the
nozzle is higher when the Z-Axis start to accelerate upwards.
– No delay compared to the standard pickup cycle.
– Attention: If we use this for large nozzles the placement head get more dust inside without any
benefits on a better vacuum.
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Start gantry axes to the pick up position next feeder & communi
tion to component table:
– start signal to Gantry axes
– Next feeder signal / this opens feeder flap
end signal X-, Y-, Star-axis: - end signal Star-axis:
– Vacuum check Segment sealed? before placement
– X / Y end signals existing
Z-Axis starts:
– Z-axis starts positioning downward
Light barrier (LB) above switches:
– special sequence:
– valve drive switch to vacuum enable LB bottom
LB bottom switches:
– end signal positioning Z-axis downwards
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Student Guide SIPLACE HF/HF3
6 Collect &Place-Head / DLM2 Edition 09/2005
38
6.3.28 Pick up sequence with slow start Z-axis upwards
Special mode “reduced acceleration" on Z-axis for machines with SC/MC 407
start slow handling mode for machines with SC/MC 503 and higher.
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Fig. 6.3 - 25 Pick up sequence detailed Z-axis upwards with a slow start.
LB bottom switches:
- end signal positioning Z-axis down; both actions finished? (switched to vacuum and end signal
Z-axis)
- Start signal to move up
Z-axis started:
- positioning Z-axis upwards
- special mode the first 1mm with start speed.
- This last ~20 ms and at this time the vacuum inside the nozzle increase up to the maximum.
LB above:
- reset LB bottom signal
- 1st vacuum request component picked up?
- Enable start for gantry axes
communication to component table:
- all feeders in this special mode2: „close feeder flap“ and stroke feeder
Z-axis end signal (Z-axis on 0-position & DP-station swiveled off):
- 2nd vacuum request component picked up?
- Enable start for star-axis
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