SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第324页

1 - 12 S tudent Guide SIPLACE HF/HF3 7 TWIN-Head Edition 09/2005 12 7.3.2 Placement principle T win-head During PCB-tra nsport time wait th e gantry at t heoretical fiducial position to execute PCB-position recognition (…

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Student Guide SIPLACE HF/HF3

Edition 09/2005 7 TWIN-Head

7.3 Pick up and Placement Cycle of the Twin Head

7.3.1 General

Fig. 7.3 - 1 Twin head overview

The module 2 of the TWIN Head is 180 degree mounted to module 1.

The distance between the nozzles is approximately 71 mm in X - direction.

The maximum component height is 25 mm.

Programmable placement force 0.5N – 15N,

Rotational accuracy of 0.07°, 4sigma / X- and Y- axis 35µm 4 sigma.

Improved Odd Shape Component-capabilities (components up to 200x125mm, weight of 100g)

3700 cph for large components

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Student Guide SIPLACE HF/HF3

7 TWIN-Head Edition 09/2005

7.3.2 Placement principle Twin-head

During PCB-transport time wait the gantry at theoretical fiducial position to execute PCB-position

recognition (and bad mark recognition) after clamping. With " Whispering down the machine"

gantry 3 (at PA2) center only 2 fiducials of PCB recognition.

Than the TWIN-head start to collect one component with module 1 and one component with mod-

ule 2. Than follows a centering sequence for this two components.

7.3.3 Prepare pick up process module 1

Please Note:

For more accuracy the first five components centered above the IC camera in 0° and 180° at each

PCB board (SW 504). With the SW 505 we will check the offset between nozzle and IC/ FC cam-

era via a fiducial near the IC/FC camera after a defined time of 3 min.

Z-

D-Motor

– PCB-position recognition and Ink dot recogni-

tion.

– Start X / Y Axis to Pick up position at feeder

track.

– Start D Axis to set the Pick up angle during

X / Y positioning.

– communication to comp. table ‘Feeder ready’

opens component flap.

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Student Guide SIPLACE HF/HF3

Edition 09/2005 7 TWIN-Head

7.3.3.1 Pick up component module 1

– Z-Axis position downwards with Standard Pick up

mode at 2 N Pick up force.

– At contact with the component the force increase up

to the programmed value.

– At this force level the End signal is triggered and the

Vacuum controlling is activated.

– When Vacuum threshold ‘Pick up’ is measured the Z-

Axis movement upwards start with Standard-position-

ing mode.

– communication to comp. table ‘index Feeder’ when

the Z-Axis reached the "safety height position.

– At end signal Z-Axis top -> Vacuum check ‘comp. on

nozzle’

– Turn with D-Axis the component to the placement an-

gle.

– Prepare pick up with module 2