00198168-02_Technical_Training_TX-Series_EN.pdf - 第62页

5 Placement Heads 5.1 CPP Head 62 Technical Training SIPLACE TX-Series 10/2016 Pick Up Workflow detailed Holding circuit of each segment is switched on via the valve board, just before pickup is performed. Since the trav…

5 Placement Heads

5.1 CPP Head

Technical Training SIPLACE TX-Series 10/2016 61

Pick Up Workflow

A Placement angle correction after optical

centering

B Rotate component into placement angle

1. Vacuum measurement pick up/ place

circuit

2. Optical centering (SIPLACE Vision)

3. Vacuum measurement holding circuit

If a component fails the optical centering (identity error), then this component remains on the

nozzle. After all other components have been placed, the failed component will go to the reject

cycle.

5 Placement Heads

5.1 CPP Head

62 Technical Training SIPLACE TX-Series 10/2016

Pick Up Workflow detailed

Holding circuit of each segment is switched on via the valve board, just before pickup is performed.

Since the travel paths for each axis can be calculated, the next action (e.g. starting the Z Axis) is

started via position flags.

For example: The Z Axis to start moving down 10ms earlier before end signals from Star Axis.

5 Placement Heads

5.1 CPP Head

Technical Training SIPLACE TX-Series 10/2016 63

Automatic head offset correction (TX micron only)

●

The PCB camera centers the fiducial after

clamping to determine the exact position of

the board.

●

Max. 12 components will be picked up.

Components are then centered under the

component camera.

●

Automatic head offset correction:

– 25µm @ 3σ:

Every 60 min. 3 fiducial marks on the

Xfiducial bar are checked.

– 20µm @ 3σ:

Every 60 min. all fiducial marks on the

Xfiducial bar are checked.

– 15µm @ 3σ: Every 40 min. :

- The head offset is checked using the

calibration tool on the Xfiducial bar.

- All fiducial marks on the Xfiducial bar

are checked.

- All fiducial marks on the Yfiducial bar

on the vacuum tooling are checked.

– 25/20/15µm @ 3σ:

Every 5 min. the head offsets are

calculated using the components of the

current job.

●

Place components on PCB according to

the program.

NOTICE

Calibration nozzles

For TX micron machines in every nozzle changer at least 1 calibration nozzle (2057) has to

be setup.

In both calibration pockets a calibration tool must be available.

This is necessary to ensure that the automatic head offset correction can take place.