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9 C&P Placement Heads 9.2 Placement Procedure 9.2.3 Boards – Position Recognition 156 Student Guide SIPLACE D-Series (FSE) can be programmed for position recognition . The fidu cials shoul d not be on the same line a…

9 C&P Placement Heads

9.2.1 Working Position on Placement Head 9.2 Placement Procedure

Student Guide SIPLACE D-Series (FSE) 155

▪ Valve plunger pulled (towards back): the connection to the vacuum supply exists, even if the elec-

tromagnetic valve is switched on.

This function description illustrates that the valve plunger is the element with the greatest influence on

the placement and pickup reliability. It is therefore important to maintain this key part with the tools spe-

cially developed for this purpose.

9.2

9.2 Placement Procedure

Placement Procedure

9.2.1

9.2.1 Working Position on Placement Head

Working Position on Placement Head

9.2.2

9.2.2 C&P12 in Basic Setting Star 15°

C&P12 in Basic Setting Star 15°

9.2.3

9.2.3 Boards – Position Recognition

Boards – Position Recognition

Board position recognition is used to determine the exact position of the board in the machine (conveyor

--> placement area). There should be at least two fiducials on the board. These are then used to calcu-

lated the X/Y position and the rotary angle of the board, in the conveyor system. A maximum of 3 fiducials

Working position on placement head

Legend

1. optical centering

2. Turning station / DLM2

3. Service position for segment: check/remove the noz-

zles and sleeves

4. Pick and place station (also reject position for D3/D2/

D2i/D1/D1i)

5. Reject position for D1/D1i/D2/D2i/D4/D4i machines

only

6. Direction of operation

7. Position of component sensor option (only C&P12)

C&P12 in basic setting star 15°

Star position:

Digits: 15000

Angle 15°

1° is equivalent to 1000 digits

This is the basic C&P12 setting. When the X and Y axes

are in the waiting position, the star axis is rotated into this

basic setting.

9 C&P Placement Heads

9.2 Placement Procedure 9.2.3 Boards – Position Recognition

156 Student Guide SIPLACE D-Series (FSE)

can be programmed for position recognition. The fiducials should not be on the same line as one anoth-

er. In addition to determining the position of the board in the conveyor system, this 3rd fiducial enables

you to determine and correct any displacement within the board (jolted, stretched).

9.2.3.1

9.2.3.1 Temperature Compensation

Temperature Compensation

In addition to board recognition, SIPLACE D/Di-series machines perform temperature compensation

with the 2nd gantry in the placement area, through PCB position recognition. This compensates another

error source which could affect accuracy.

9.2.3.2

9.2.3.2 PCB Position Recognition - Centering the PCB Fiducials

PCB Position Recognition - Centering the PCB Fiducials

Board recognition in SIPLACE D4/D4i

Legend

1. Gantry 1

2. Gantry 2

3. Gantry 3

4. Gantry 4

5. Transport direction

Gantry 4: position recognition with max. 3 fiducials,

Gantry 2: position recognition with max. 2 fiducials, in PA

2 of D4/D4i

Gantries 1 and 3: Temperature compensation by ap-

proaching the fiducials - a position difference to gantry 4

or 2 is recognized by the Vision system and is then taken

into account and compensated in the following placement

procedure.

Grobzentrierschritt zur Markenzentrierung

A fiducial is expected at this target position. The PCB

camera moves out of the waiting position to this fiducial

position.

▪ PCB position recognition is performed, generally be-

fore the gantry takes up the 1st component.

▪ The gantry axes move the PCB camera to the theo-

retical fiducial position. The camera records an image

of the 1st fiducial. The Vision system calculates the

center position.

9 C&P Placement Heads

9.2.4 Preparing Nozzle 1 - Moving to Pickup Angle (0° or 90°) 9.2 Placement Procedure

Student Guide SIPLACE D-Series (FSE) 157

9.2.4

9.2.4 Preparing Nozzle 1 - Moving to Pickup Angle (0°or90°)

Preparing Nozzle 1 - Moving to Pickup Angle (0° or 90°)

Feinzentrierschritt zur Markenzentrierung und Markenpo

sitionsbestimmung

The centered fiducial now defines the actual position of

the board.

▪ The camera takes a shot of the 2nd fiducial and the

Vision system calculates the center of the image.

▪ A second calculation detects any deviation between

the target fiducial position and the position actually

determined.

▪ All PCB fiducials are optically centered using this

method.

▪ This data is then sent to the machine controller.

▪ The corrected values are then used for the X/Y and

angle positions of the board.

▪ The gantry axes now move the placement head to the

first pickup position.

NOTICE

SIPLACE Vision or synthetic fiducials

If synthetic fiducials are used, this does not change the procedure described; although inkspot

recognition is performed after fiducial recognition.

Rotating nozzle 1 to pickup angle (0° or 90°)

NOTICE! This step is only performed indepen-

dently before the very first pickup cycle.

▪ The star axis rotates to 240°. Nozzle 1 is now in the

DP station.

▪ The DP station swivels in and the DP axis control sys-

tem rotates the nozzle to its pickup angle of 0° or 90°

(default pickup angle).

▪ As soon as the nozzle reaches its position, an end

position signal is emitted and the DP station swivels

back.

The other nozzles on the head are then moved into their

pickup angles by further rotation of the star.