SiplaceX4_en.pdf - 第405页

1 - 39 S tudent Guide SIPLACE X Edition 09/2005 8 Collect&Place-Head 20 39 8.3.19 Pickup and Placement Cycl e for the Next Component s... – After all the components of the first head cycle have been placed on th e bo…

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Student Guide SIPLACE X
8 Collect&Place-Head 20 Edition 09/2005
38
8.3.17 Placing the 11th Component
Fig. 8.3 - 17 Placing the 11th component
8.3.18 Placing the 20th Component
Fig. 8.3 - 18 Placing the 20th component
CO- Sensor
CO - Sensor
Segment 11
Segment 1
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CO-Camera
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Star position 180°
– Vision system: optical centering of the 1st comp
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on the other gantry (marked blue here)
– Pickup / placement station: place 11th compon
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(marked red (light grey) here)
– Component sensor:
Checks before and after placement, whether
component is present on nozzle / has been placed
.
(see Ch. 8.2.13 to 8.2.15)
– A, B (see previous chapter)
CO - Sensor
CO - Sensor
Segment 20
Segment 10
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Star position 342°
– Vision system: optical centering of the 10th com-
ponent on the other gantry (marked blue here)
– Pickup / placement station: place 20th compo-
nent. (marked red here)
– Component sensor:
Checks before and after placement, whether
component is present on nozzle/has been
placed.
(see Ch. 8.2.13 to 8.2.15)
– A, B (see previous chapter)
– Synchronization:
After the 20th component this gantry Y-Axis con-
troller will enable the other gantry Y-Axis to move
to 1st placement position.
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Student Guide SIPLACE X
Edition 09/2005 8 Collect&Place-Head 20
39
8.3.19 Pickup and Placement Cycle for the Next Components...
– After all the components of the first head cycle have been placed on the board, the gantry axes
move the placement head to the pick up position of the next pick up cycle.
– The next pick up cycle for components 21 to 40 is executed.
– And so on and so on..... If necessary the machine executes repair cycles.
8.3.20 Segment with a „Defective Component“
If the optical centering of a component fails (ident. error) or component recognition before place-
ment fails, the component will not be placed and will remain on the nozzle.
– the turning station will still turn this nozzle to the pick up angle of the new component if this
segment is in area
A.
If this segment is in pick up position:
– The reject procedure will be activated and
– The X/Y axes will move to the reject position for that gantry,
– The component will be rejected to the reject box below, via air kiss
– The gantry is moved back to the pick up position.
– The new component will be picked up.
This rejected component will be placed during a „repair cycle“, after all the placement cycles set
for the placement head have been performed.
8.3.21 Finishing PCB Placement
– After placing the last component with the C&P20 head the gantry axes move the placement
heads to the waiting position.
– After the first board, or the one, respective to Scan parameter, a optical nozzle scan on pollu-
tion is executed,
– The SIPLACE placement station activates the transport system and moves the board to the
intermediate/output conveyor.
– Finally, the SIPLACE placement station sends the number of consumed components (placed
and rejected ones) to the computer with the OIS (Operator Information System).
– The OIS (Operator Information System) calculates the placement statistics referring to the pro-
grammed station setup, the programmed cluster or the last reset time. These placement sta-
tistics help to optimize the production process.
– The machine is now ready for the next board.
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Student Guide SIPLACE X
8 Collect&Place-Head 20 Edition 09/2005
40
8.3.22 Positioning to Pickup/Placement Angle
Fig. 8.3 - 19 Positioning to pickup/placement angle
Positioning to the pickup/placement angle is performed individually by the DP master for each
segment of the C&P20 head, since each segment is equipped with its own DP station.
Each DP drive has its own measurement system for positioning.
Each DP stations have found their 0° position during the reference run, turns the segments in the
pickup/placement cycle in area
A, and after the vision system in area B, in their corrects place-
ment angle.
8.3.23 Detailed Standard Pickup Sequence: Z-axis Downwards
Fig. 8.3 - 20 Star position 0°: detailed pickup sequence: Z-axis downwards
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Segment 11
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CO-Camera
CO - Sensor
CO- Sensor
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B
The 20 DP axes are controlled via the
„DP Master". The machine control
system can therefore effectively per-
form 4 actions simultaneously:
(1) Starts a certain rotary axis after
pickup/placement
(2) Starts a certain rotary axis after Vi-
sion
(3) Waits for a certain rotary axis be-
fore Vision
(4) Waits for a certain rotary axis be-
fore pickup/placement
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