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C&P12 Placement Head Travel Profile - Pickup Z-Axis D own S tudent Guide SIPLACE D4 (FSE) C&P12 Placement Head EN 09/2006 208 9.3.1.2 S pecial Mode "Cont actless Pickup" Z-Axis Down Pickup procedure for…
C&P12 Placement Head
Z-Axis Down Travel Profile - Pickup
Student Guide SIPLACE D4 (FSE)
EN 09/2006 C&P12 Placement Head
207
9.3 Travel Profile - Pickup
9.3.1 Z-Axis Down
9.3.1.1 Detailed Standard Pickup Procedure: Z-Axis Down
Start gantry axes to pickup position of next feeder
and communication with CO table: Start signal to
gantry axes
Start signal X & Y axis to next feeder/this
opens the feeder flap
End position signal for X/Y and star axes:
End position signal for star axis
Enables vacuum query: "segment airtight?"
before pickup
X/Y end position signals available.
Z-axis starts:
Z-axis starts positioning downwards
Light barrier (LB) up switches:
Release signal for function LB down after a
waiting period of approx. 3.6 ms
LB down switches:
End position signal for positioning Z-axis down
and valve positioning drive ON for vacuum.
C&P12 Placement Head
Travel Profile - Pickup Z-Axis Down
Student Guide SIPLACE D4 (FSE)
C&P12 Placement Head EN 09/2006
208
9.3.1.2 Special Mode "Contactless Pickup" Z-Axis Down
Pickup procedure for "contactless pickup":
Start gantry axes to pickup position of feeder and communication with CO table:
– Start signal to gantry axes
– Signal for next feeder / this opens the feeder flap
End position signal for X/Y and star axes:
– End position signal for star axis
– Enables vacuum query: "segment airtight?" before pickup
– X/Y end position signals available.
Z-axis starts with operating mode "positioning type - absolute" to saved nominal height:
– Positioning of Z-axis down
Light barrier (LB) up switches:
– Release for function LB down (although not needed))
Axis controller switches:
– When the taught pickup height is reached, end position signal for Z-axis positioning is issued.
The machine controller switches:
– Valve positioning drive for switching over to vacuum ON.
The positioning procedure for "upwards" is identical to that for standard pickup.
Benefits of special mode "contactless pickup"
The function option "contactless pickup" offers the following benefits:
Prevents touching of CO feeder unit and the possible resulting component shift/jump.
Increases the pickup reliability for small COs, lightweight COs and exotic COs. The nozzle "hovers"
about 0.1 mm above the CO surface. When the vacuum is switched on, the nozzles sucks up the CO
In the case of LRU/LRL 503 and SIPLACE Pro,
contactless pickup can only be programmed in the
CS for SR/MC 503 stations and higher.
When the CO track, for which contactless pickup
has been programmed, is accessed for the first
time, the following is performed:
The Z-axis is taught the pickup height with
increased force. The Z-axis moves until it
mechanically stops.
This pickup height is then reduced by 1.13 mm
(602) to give the nominal height (path of
segment deceleration and ...) and is saved.
The CO used for the teaching procedure is
rejected.
C&P12 Placement Head
Z-Axis Down Travel Profile - Pickup
Student Guide SIPLACE D4 (FSE)
EN 09/2006 C&P12 Placement Head
209
from the tape pocket!
No time loss during pickup (compared to standard pickup).
The function is NOT limited to 0201 component shapes, certain nozzle types or feeder types.
9.3.1.3 Special Mode "Pickup with Minimum (Very Low) Force " for Z-Axis Down
Travel profile Z1 and Z2
These travel profiles are currently only available for the Twin head.
Definable pickup forces: 0.9 - 2.0 N
9.3.1.4 Special Mode Pickup with Early Vacuum Z Down, "(in Top Position)"
Benefits of special mode "early vacuum"
The function change "early vacuum" offers the following benefits:
Increases the pickup reliability for small nozzle types 901/904. The vacuum begins to build up during
the downwards movement. This ensures, that when the upwards movement begins, an exotic CO
and /or a heavy CO will remain safely on the nozzle.
No time loss during pickup (compared to standard pickup).
ATTENTION:
The nozzle types must be able to build up enough suction force to pick up the
COs concerned.
Start gantry axes to pickup position of next feeder
and communication with CO table:
Start signal to gantry axes
Signal for next feeder / this opens the feeder
flap
End position signal for X/Y and star axes:
End position signal for star axis
Enables vacuum query: "segment airtight?"
before pickup
X/Y end position signals available.
Z-axis starts:
Positioning of Z-axis down
Light barrier (LB) up switches:
Special procedure: valve positioning drive ON
for switching over to vacuum
and releases LB down function
LB down switches:
End position signal for positioning Z-axis down
ATTENTION:
Nozzle types with large openings increase the risk of contamination - without
profiting from the benefit of vacuum formation!