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User Manual SIPLAC E HF Series 3 Technical data Software Vers ion SR.505.xx 05/2004 US Edition 3.6 Placem ent heads 105 3.6.3.1 Descriptio n The 6-segme nt Collec t & Pla ce head also wor ks on the Collect & Plac…
3 Technical data User Manual SIPLACE HF Series
3.6 Placement heads Software Version SR.505.xx 05/2004 US Edition
104
3
Fig. 3.6 - 7 6-segment Collect&Place head - Function groups, part 2
3
(1) Intermediate distributor board, beneath the cover
(2) Star drive - DR motor
(3) Z axis motor
(4) Valve adjustment drive
(5)39 x 39 component vision camera
User Manual SIPLACE HF Series 3 Technical data
Software Version SR.505.xx 05/2004 US Edition 3.6 Placement heads
105
3.6.3.1 Description
The 6-segment Collect&Place head also works on the Collect&Place principle. With the standard
component vision module, the HF machine places components with an edge length of up to 32
mm quickly and very accurately. It is therefore ideal for use with products containing a large pro-
portion of ICs. A considerable increase in output can be achieved even in the main application
range from PLCC 44 to QFP 208.
The 6-segment Collect&Place head can optically center and place components from 0.6 x 0.3
mm² to 13 x 13 mm² using the optional DCA vision module. The DCA vision module optimizes the
speed and accuracy when placing high-speed flip-chips and bare die components The values are
shown in the table on page 107
.
Checking and self-learning functions 3
The checking and self-learning functions described on page 100 for the 12-segment
Collect&Place head also apply to the 6-segment Collect&Place head.
3.6.3.2 Description of the functions
3
Fig. 3.6 - 8 Description of the functions
Component camera
DP axis
Rotate component
into placement position
Remove sleeve
or insert
Z axis
Pick up component
or place it
Star axis
Star rotation
Reject component
3 Technical data User Manual SIPLACE HF Series
3.6 Placement heads Software Version SR.505.xx 05/2004 US Edition
106
Æ The 6-segment Collect&Place head has three axes - the DR or star axis, the Z axis and the DP
axis.
Æ The star rotates about the star axis with its 6 segments. The segments hold the sleeves. There
is a nozzle seated on every sleeve, which sucks up the components, and transports them from
the pick-up/placement position (1) to the reject position (2), to the optical centering position (4)
or to the turning position (5).
Æ The Z axis performs a vertical movement. Every sleeve that is in the bottom star position (1)
is raised or lowered by this axis, thus picking up the components from the conveyors and set-
ting them down on the PCB. The Z axis is an "intelligent axis". It "notes" the pick-up height of
each conveyor track and the placement height for each component. This can speed up the
placement process. The programmed placement force remains constant.
Æ The DP axis rotates the optically centered component to the desired placement angle. The se-
quences of movements of the rotation and translation axes are controlled by control circuits.
Position and speed sensors send the actual values for the axis movement to the axis control.
The setpoint and actual values are compared and used to determine the force and speed pa-
rameters for the servo amplifier, and thus the axis movement to be performed. The vacuum
values at the nozzle are constantly checked throughout the entire pick-up and placement pro-
cess in order to keep the placement error rate as low as possible.