00194614-08 Trainingsdoku. SG X-Serie_X4i SW70x (AL2)_EN.pdf - 第246页

C&P20A Detailed Standard Pickup Procedur e: Z Axis Up Pickup and Placement Cycle for C&P20A Student Guide SIPLACE X-Serie and X4I SW70x (AL2) 246 ▪ Z axis meas urement value for p ickup height optimizat ion Detai…

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C&P20A
Pickup and Placement Cycle for C&P20A Positioning to Pickup/Placement Angle
245 Student Guide SIPLACE X-Serie and X4I SW70x (AL2)
▪ The OIS (Operator Information System) calculates the placement statistics referring to the
programmed station setup, the programmed panel or the last reset time. This detailed data is used
to optimize the process.
▪ The machine is now ready for the next board.
Position ing to Pic kup/Placement Ang le
7.4.22 Positioning to Pickup/Placement Angle
Positioning to the pickup/placement angle is performed individually by the DP master for each segment
of the C&P20A head, since each segment is equipped with its own DP station.
Each DP drive has its own measurement system for positioning the pickup/place angle.
Once the DP stations have found their 0° position during the reference run, the pickup/placement cycle
control turns the segments in area A into their pickup or centering angle (90° step) and corrects the
placement angle in area B.
Detailed Standard Pickup Procedure: Z Axis Down
7.4.23 Detailed Standard Pickup Procedure: Z Axis Down
▪ Enables vacuum query: segment open threshold ? Yes
Component sensor switches due to Z axis movement:
▪ Measurement value for nozzle length "empty"
Axis controller:
▪ Enable "light barrier down" signal.
LB down switches:
▪ End signal Z axis positioning down
Positioning to pickup/placement angle
The 20 DP stations are controlled via the DP master. The
machine control system can therefore effectively perform
4 actions simultaneously:
► Starting a certain rotary axis after pickup/placement.
► Starting a certain rotary axis after Vision.
► Waiting for a certain rotary axis before Vision.
► Waiting for a certain rotary axis before pickup/
placement.
Star position 0°: detailed pickup sequence - Z axis down
Start gantry axes to the pick up position of next feeder.
NOTICE! The Vacuum is by default always on.
▪ Start signal for X and Y axes to move to next feeder.
End signal X, Y axes:
▪ X/Y end position signals available.
Z axis starts:
▪ Z axis starts positioning downwards
End position signal for star axis
C&P20A
Detailed Standard Pickup Procedure: Z Axis Up Pickup and Placement Cycle for C&P20A
Student Guide SIPLACE X-Serie and X4I SW70x (AL2) 246
▪ Z axis measurement value for pickup height optimization
Detailed Standard Pickup Procedure: Z Axis Up
7.4.24 Detailed Standard Pickup Procedure: Z Axis Up
Standard Mode - Placement: Z Axis D own
7.4.25 Standard Mode - Placement: Z Axis Down
Axis controller:
▪ Enable signal for "light barrier down" function
LB down switches:
▪ End signal Z axis positioning downwards;
▪ Digital pressure control valve: switches "Air blast ON"
▪ Pickup/placement position; air blast threshold "place component"reached? Yes.
Detailed pickup procedure: Z axis up
LB down switches:
▪ Vacuum Threshold comp. picked reached? Yes
Z axis starts:
▪ Z axis starts positioning upwards
Component sensor switches due to Z axis movement:
▪ Z axis position value; nozzle length + comp.height
measurement threshold reached? Yes
Z axis position in safety area:
▪ reset light barrier state,
▪ X, Y gantry axes start
▪ start component feeder (communication to feeder
table)
Vacuum query:
▪ Vacuum threshold for holding circuit reached? Yes
▪ Star axis starts.
Detailed component placement procedure: Z Axis Down
In this mode (light barrier down) the placement force at
the C&P20A head is around 2N.
End position signal for X and Y axes--> Z axis starts:
▪ Positioning of Z axis downwards
▪ Component sensor checks component. Z axis
measurement value - nozzle length "with component"
- threshold reached? Yes
End position signal for star axis:
▪ Performing vacuum test "before placement".
"Vacuum closed" threshold reached? YES to
determine whether the component is held by holding
force on the nozzle.
C&P20A
Pickup and Placement Cycle for C&P20A Standard Mode - Placement: Z Axis Up
247 Student Guide SIPLACE X-Serie and X4I SW70x (AL2)
Standard Mode - Placement: Z Axis U p
7.4.26 Standard Mode - Placement: Z Axis Up
Optical Nozzle Query
7.4.27 Optical Nozzle Query
▪ After the reference run, the gantries move into the wait position and performs the first nozzle
scanning. During the production, a nozzle scanning run is performed after 350 head cycles (can be
set by SIPLACE service if required) and after the completion of the board currently processed. This
ensures that the nozzle quality is continually checked during the production process:
– All nozzles listed in the scan parameters of the station database will be measured by the
component camera.
– If there is any deviation from the defined size, shape or brightness, the machine will show the
message: Nozzle worn down or contaminated.
▪ Tiny nozzles may touch the solder paste or the glue because of component shift and the minimum
component height.
▪ The number of components per segment (number of head cycles), after the next nozzle query has
been performed, should be adjusted to the customer's process requirements. This check is always
performed after completing PCB processing.
Air Blast Control During Placement
7.4.28 Air Blast Control During Placement
The air blast is controlled by the digital pressure control valve, which can be programmed via the
component shape data in the SIPLACE PRO computer. In the component shape data, values between
0 and 255 mbar can be set at "Advanced Handling". The standard value which is transmitted with the
component shape to the station is 150 mbar. This value needs to be reached to 80 % during placement.
Detailed component placement procedure: Z Axis Up
LB down switches:
▪...
▪ Pickup/placement position; air blast threshold "place
component" reached? Yes
▪ Start signal for upwards movement
Z axis starts:
▪ Z axis positioning upwards
Head firmware:
▪ Digital pressure control valve: switches air blast OFF
▪ Reset "light barrier down" signal
Axis controller:
▪ Z axis measurement value for nozzle "empty" and
▪ Z axis in safe area =
▪ Enable X, Y gantry axes.
Vacuum query:
▪ Vacuum threshold for holding circuit reached? Yes
▪ Star axis starts.