D-serie LEVEL II - 第141页
C&P6/12 Placement Head Z-Axis Down Travel Profiles - Placement S tude nt Guide Advanced Level 2 SIPLACE D Series EN 05/2007 C&P6/12 Placement Head 8-15 8.4.1.4 D et ailed Placement Procedure: Z-Axis Downwards wit…
C&P6/12 Placement Head
Travel Profiles - Placement Z-Axis Down
Student Guide Advanced Level 2 SIPLACE D Series
C&P6/12 Placement Head EN 05/2007
8-14
8.4.1.3 Placement: Z-Axis Upwards "Creep to Target Position"
Benefits of the Special Mode "Creep to Target Position"
The "slow approach to placement height" option allows you to:
FLIP-CHIP components with their ball-type leads can be dipped into the filler material on the board
without trapping any air!
However, this option makes the placement procedure around 20 ms longer than the standard
placement procedure!
8-11: Detailed component placement procedure: Z-axis upwards with slow
approach to placement height
In the case of LRU/LRL 503 and SIPLACE Pro,
this placement type can "only" be programmed in
the CS "for SR/MC 503 stations and higher".
End position signal for X/Y and star axes:
All 3 end position signals available
Perform vacuum test "before placement", to
determine whether the component is at the
nozzle.
Z-axis starts:
Positioning of Z-axis downwards, the selected
speed profile switches over to minimum speed
1 mm before reaching the placement height.
LB up switches:
Electromagnetic valve for air blast ON
Enable signal for "light barrier down" function
LB down switches:
End signal Z-axis positioning downwards;
And valve positioning drive pickup/placement
position ON for air blast
C&P6/12 Placement Head
Z-Axis Down Travel Profiles - Placement
Student Guide Advanced Level 2 SIPLACE D Series
EN 05/2007 C&P6/12 Placement Head
8-15
8.4.1.4 Detailed Placement Procedure: Z-Axis Downwards with Waiting Time at Placement
Benefits of special mode "waiting time - placement"
With the "waiting time - placement" option you can:
Combine any of the Z-axis operating modes.
With this "waiting time - placement" option you can:
Press the BARE-DIE component into the adhesive with placement force, so that the adhesive flows
under the component surface and sticks over the surface.
Very big COs can be pressed into the soldering paste so that all leads contact with the paste.
8-12: Detailed component placement procedure: Z-Axis downwards with
waiting time at placement
End position signal for X/Y and star axes:
All 3 end position signals available
Perform vacuum test "before placement", to
determine whether the component is at the
nozzle.
Z-axis starts:
Positioning of Z-axis downwards
LB up switches:
Electromagnetic valve for air blast ON
Release signal for function LB down
LB down switches:
End position signal for positioning Z-axis
down;
And valve positioning drive pickup/placement
position ON for air blast
Special mode "Waiting time down"
The end position signal Z-axis down starts the
waiting period timer in the MC.
After the waiting period, the air blast pressure
is measured.
Positioning upwards begins.
ATTENTION:
The Z-axis moves up (SW 6xx) if the emergency stop button is pressed or a protective cover is
opened!
NOTE:
The pickup process offers the same programming options for a waiting period at the bottom (for
pickup from surftape feeders (typical: 250 ms)). However, due to the waiting period, this option
makes the placement procedure longer than the standard placement procedure!
C&P6/12 Placement Head
Travel Profiles - Placement Z-Axis Up
Student Guide Advanced Level 2 SIPLACE D Series
C&P6/12 Placement Head EN 05/2007
8-16
8.4.2 Z-Axis Up
8.4.2.1 Standard Mode - Placement: Z-Axis Up
8.4.2.2 Placement: Z-Axis Upwards with "Slow Start"
8-13: Detailed component placement procedure: Z-axis up
LB down switches:
End position signal for downwards and valve
positioning drive "ON" for air blast
Measurement of air blast pressure during
placement
Start signal for upwards movement
Z-axis starts:
Positioning of Z-axis upwards
LB up switches:
Electromagnetic valve for air blast OFF
Reset LB down signal
Start signal for gantry axes
Z-axis end position signal (Z-axis at 0 position):
Enables vacuum query: "Segment airtight"
after placement (SR/MC503)
Start signal for star axis
8-14: Detailed component placement procedure: Z-axis upwards with slow
start from placed component
From LRU/LRL 503 and SIPLACE Pro, this
placement type can "only" be programmed in the
CS "for SR/MC 503 stations and higher".
LB down switches:
End position signal for downwards and valve
positioning drive ON for air blast
Measurement of air blast pressure during
placement
Start signal for upwards movement
Z-axis starts:
Positioning Z-axis up with reduced starting
speed for the first 44 digits
LB up switches:
Electromagnetic valve for air blast OFF
Reset LB down signal
Start signal for gantry axes
Z-axis end position signal (Z-axis at 0 position):
Enables vacuum query: "segment airtight?"
after placement (SR/MC503)
Start signal for star axis