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SIPLACE 80S/F/G User’s Manual 8 Component Supply Edition 07/97 from S oftware Version SR.010.xx 8.6 Wafflepack Changer 8 - 21 8.6.3 Principle of t he Wafflepack Changer With the wa fflepack c hanger on the S IPLACE 8 0 F…
8 Component Supply SIPLACE 80S/F/G User’s Manual
8.6 Wafflepack Changer Edition 07/97 from Software Version SR.010.xx
8 - 20
8.6.2 General
The use of flatpack ICs is gaining more and more importance in the manufacture of printed circuit boards.
These components have now reached the point where they are almost always delivered on magazine trays
(wafflepack magazines).
The space taken up by magazine trays is however relatively high when compared with the components den-
sity. In addition, due to their low holding capacity, the wafflepack magazines must frequently be changed and if
this has to be done by hand this necessarily involves interrupting the placement process.
But when a wafflepack changer is used there is no time lost unnecessarily in the storing and automatic chang-
ing of the wafflepack magazines. Programmed access to up to 28 freely selectable wafflepack magazines also
increases the range of available components.
NOTE
The wafflepack changer is located on the lefthand side of the SIPLACE 80 F table.
The wafflepack changer does not require the entire width of the components table. On this side of the table 10
locations remain free which can be used for the 20 x 8 mm tape module, for example.
SIPLACE 80S/F/G User’s Manual 8 Component Supply
Edition 07/97 from Software Version SR.010.xx 8.6 Wafflepack Changer
8 - 21
8.6.3 Principle of the Wafflepack Changer
With the wafflepack changer on the SIPLACE 80 F it is possible to hold up to 28 wafflepack magazines and to
change these fully automatically. The magazine carriers (level) for the wafflepack magazines are numbered in
sequence from bottom to top, with the lowest number at the bottom (1 - 28).
The magazine storage unit travels vertically until the level selected lies with in the travel range of the horizontal
axis. The horizontal axis then removes the magazine carriers from the level and transports them into the
access area of the placement head.
The following Figure 8.6.2 shows the basic principle behind the wafflepack changer.
Fig. 8.6.2 Principle of the waffle-pack changer
- Key to Fig. 8.6.2
➀
Magazine storage unit
➁
Lift
➂
Horizontal axis
8.6.3.1 Sequence of Functions
●
Requirements:
Flatpack magazines with the corresponding components are defined in the set-up.
After set-up conversion the magazine storage unit will make a reference run.
The board camera approaches the fiducials which are marked on a strip (see Fig. 9.7.3).
8 Component Supply SIPLACE 80S/F/G User’s Manual
8.6 Wafflepack Changer Edition 07/97 from Software Version SR.010.xx
8 - 22
Fig. 8.6.3 Functional sequence
- Key to Fig. 8.6.3
➀
The selected level of the magazine storage unit is positioned on the feeder axis (horizontal).
➁
The tray is transferred to the access area of the placement head.
➂
The components are removed.
➃
The tray is returned again.
-
The lift in the magazine storage unit brings the magazine carrier from the selected level into position on the
horizontal feeder axis.
-
The magazine carrier with the flatpack magazine is brought into the placement head's access area.
-
Once the requisite components have been removed by the placement head, the magazine is returned in
the reverse sequence of operations.
NOTE
If the placement sequence is interrupted with the wafflepack changer being switched off, the set-up and the
current fill level will remain saved in memory.
-
If the placement sequence is restarted using the set-up which was being used when the sequence was
aborted, the placement machine will be able to pick up the next component from the point where it picked
up the previous one.
-
The position of the magazine carriers in the flatpack magazine storage unit and the components they are