80S-20用户手册.pdf - 第497页
SIPLACE 80S-20/F4 User Manual 11 Station extensions /Hardware Software version SR.407.xx 01/2001 US Edition 11.8 Coplanarity laser module (80F4) 497 1 1 .8 Coplanarity laser module (80F 4 ) 1 1 .8.1 Functional descriptio…
11 Station extensions /Hardware SIPLACE 80S-20/F4 User Manual
11.7 Flip-chip vision module for the Pick & Place head Software version SR.407.xx 01/2001 US Edition
496
11.7.3 Technical data
11
Flip-chip size
with single measurement
with multiple measurement
1x1mm
up to 7x9mm
up to 20mmx20mm
Dimension < 3mmx6mm Special nozzle, feeding tolerance < 0.2 mm edge length
Minimum bump diameter 80µm
Placement cycle minimum 2sec (depending on the number of bumps)
IC grid:
Lead pitch
Bump pitch
0.25mm
0.15mm
Field of view 9mmx11.5mm
Method of illumination Front lighting (3 levels programmable as required)
SIPLACE 80S-20/F4 User Manual 11 Station extensions /Hardware
Software version SR.407.xx 01/2001 US Edition 11.8 Coplanarity laser module (80F4)
497
11.8 Coplanarity laser module (80F
4
)
11.8.1 Functional description
The coplanarity laser module is used to measure vertical bending of the leads. The lead length is
measured without contact using the laser triangulation principle. 11
The placement head picks up the component to be checked, centers it optically using the IC cam-
era, and moves all four sides one after another over the fixed laser beam of the coplanarity laser
module. In this way, every lead is scanned from below by the laser beam. The laser light scattered
by the underside of the lead is recorded by a sensor, and is then used to calculate the exact po-
sition of the lead with respect to the PCB. The position values thus calculated are compared
against the limit value specified by the user. If they exceed this value, the component is disposed
of or reworked. 11
Fig. 11.8 - 1 Principle of laser triangulation
(1) Receiver lens (2) Detector
(3) Measuring signal (4) Time t
(5) Laser (6) Transmitter lens
(7) Travel direction 11
11 Station extensions /Hardware SIPLACE 80S-20/F4 User Manual
11.8 Coplanarity laser module (80F4) Software version SR.407.xx 01/2001 US Edition
498
The coplanarity laser module is combined with optical component centering, and is used in a
vision module. Components with bent or missing leads are detected and disposed of, if necessary.11
11.8.2 Technical data
Component range: Can be used for gull wing components, pitch 0.3
The component size and lead pitch are limited by the
component position recognition system,
i.e. max. size 43.0 mm x 43.0mm x 11.0 mm.
Measuring principle:
Contact-free measurement by laser triangulation
Algorithm functions: JEDEC standard calculation of the placement plane, all
deviations are determined in relation to this plane. If the
component is angled with respect to the vacuum nozzle, as can
happen if an adapter is used, then it will have no influence over
the choice between ‘good’ and ‘bad’.
Output: < 5 mW
Measuring range: ± 2.5 mm
Laser focus: elliptical, 50µm x 95µm
Thermal stability: ± 1µm/K
Wavelength: 670 nm
Resolution: 0.25µm
Scanning frequency: 10 kHz
Weight: 500 g
Operating temperature: 0°C ... 40
Humidity: 5 - 95% non-condensing
Ambient pressure: Atmospheric pressure
Vibration: to IEC 68-2-6
Mechanical shock: to IEC 68-2-27
EMC: to EN 50081-2 emitted interference
to EN 50082-2 immunity to interference
Degree of protection: IP 64
Mech. dimensions: 118 mm x 30 mm x 125.5 mm
Permissible ambient light: 30,000 lx
Safety: The coplanarity laser module conforms to laser class 1
when installed in the machine. The module will not work when
off the machine unless further devices are installed or
the protective functions are modified. If the protective functions
on the device are bypassed, the machine automatically conforms
to laser class 3B – Risk of injury to eyes and skin
-
and thus requires protective measures to VBG 93.