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SIPLACE 80S/F/G Service Manual 9 Revolver Head Edition 04/97 9 - 19 9.4.2 Fu nctional Sequence "Forced Air" during Placement of a Co m- ponent The sz ax is si nks. On ce the sz axis has rea ched i ts botto m po…

9 Revolver Head SIPLACE 80S/F/G Service Manual

Edition 04/97

9 - 18

Fig. 9.4.1 Valve block, complete, for the “Forced air“ function

SIPLACE 80S/F/G Service Manual 9 Revolver Head

Edition 04/97

9 - 19

9.4.2 Functional Sequence "Forced Air" during Placement of a Com-

ponent

The sz axis sinks. Once the sz axis has reached its bottom position, with the end signal the forced air valve is

opened for about 30 - 40 msec and the component set down on the PCB. Following this period of time the sz

axis begins moving back upwards. While it is so moving, screwdriver 1 is activated in order to close the seg-

ment vacuum duct with the sealing piston. With the end signal from screwdriver 1 the forced air valve is closed

again. As as the "sz axis in top end position" bero has responded the revolver head can cycle on.

9.4.3 Functional Sequence "Forced Air" during Ejection of a Compo-

nent

The forced air valve for the ejection circuit opens for about 60 msec in order to eject the component. The valve

then closes. The vacuum test is used to check whether the component has been ejected - in other words, the

vacuum value is measured while the segment is open. Following this test, screwdriver 2 closes the nozzle by

moving the sealing piston forwards into the segment. Once the bero of screwdriver 2 has finally given the end

signal the revolver head can cycle on.

9 Revolver Head SIPLACE 80S/F/G Service Manual

Edition 04/97

9 - 20