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7 Station extensions User Manual S IPLACE CF 7.3 Coplanarity laser module Software Version SR.408.xx 03/2006 US E dition 184 7.3 Coplanarity lase r module 7.3.1 Description of the functions The coplana rity laser module …
User Manual SIPLACE CF 7 Station extensions
Software Version SR.408.xx 03/2006 US Edition 7.2 Flip-chip vision module for the Pick&Place head
183
7.2.3 Technical data
Flip-chip size
With single measurement
With multiple measurement
1x1 mm
Up to 7 x 9 mm
Up to 20 mm x 20mm
Dimensions < 3mmx6mm Special nozzle, feeding tolerance < 0.2 mm edge length
Min. bump diameter 80µm
Placement cycle minimum 2 sec (depending on the number of bumps)
IC pitch:
Lead pitch
Bump pitch
0.25 mm
0.15 mm
Field of vision 9 mm x 11.5 mm
Method of illumination Front lighting (three levels, programmable as required)
7 Station extensions User Manual SIPLACE CF
7.3 Coplanarity laser module Software Version SR.408.xx 03/2006 US Edition
184
7.3 Coplanarity laser module
7.3.1 Description of the functions
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.
The placement head picks up the component to be checked, centers it optically using the IC
camera 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 position of the lead with respect to the PCB. The position values thus calculated are com-
pared against the limit value specified by the user. If they exceed this value, the component is
disposed of or returned.
Fig. 7.3 - 1 Laser triangulation measurement principle
7
(1) Receiver lens (2) Detector
(3) Measuring signal (4) Time t
(5) Laser (6) Transmitter lens
(7) Travel direction
User Manual SIPLACE CF 7 Station extensions
Software Version SR.408.xx 03/2006 US Edition 7.3 Coplanarity laser module
185
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 neces-
sary.
7.3.2 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 detection system, i.e. max. size 43.0 mm x 43.0 mm 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, 50 µm x 95 µm
Thermal stability: ± 1 μm/K
Wave length: 670 nm
Resolution: 0,25 µm
Scanning frequency: 10 kHz
Weight: 500 g
Operating temperature: 0°C ... 40
Atmospheric humidity: 5 - 95 % non-condensing
Ambient pressure: Atmospheric pressure
Vibration: As per IEC 68-2-6
Mechanical shock: As per IEC 68-2-27
EMC: As per EN 50081-2 emitted interference
As per 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.