80S-15贴片机.pdf - 第376页
9 Revolver Head SIPLACE 80S/F/G Service M anual Edition 04/97 9 - 92
SIPLACE 80S/F/G Service Manual 9 Revolver Head
Edition 04/97
9 - 91
9.10.2.1 Functional Description
A segment of the placement head picks up a component at revolver head station 1. The revolver head cycles
on, further components are picked up. Revolver head station 8 accommodates the optical unit of the compo-
nent vision system. Upon arrival of the component, it is evenly illuminated with red light by staggered rows of
LEDs. The lens can reproduce with sharp focussing components up to 5 mm tall in the camera's CCD chip.
The digital image of the components created by the components camera is transmitted to the vision evalua-
tion unit. With the aid of digital image processing (the HALE technique) the evaluation unit compares the com-
ponent image with a synthetic model previously created in the GF editor (GF = package form). The
parameters so obtained provide information on positional deviations, angle of rotation, leads condition and
components re-identification. The HALE technique has proved to be very resistant to interference, such as
reflection and dazzle, different reflectivity of leads, dispersed light, and so on. It is quicker and more precise
than the matching technique. After successful measurement the segment rotates the component in revolver
head station 9 into the correct placement orientation. In revolver head station 1 the component is than
inserted onto the PCB with the correct orientation.
9 Revolver Head SIPLACE 80S/F/G Service Manual
Edition 04/97
9 - 92
SIPLACE 80S/F/G Service Manual 9 Revolver Head
Edition 04/97
9 - 93
9.11 Option CRDL Testing
If the option "CRDL testing" is installed, the components are checked at the mechanical centering station to
ensure that their electrical properties correspond to the specified values.
Fig. 9.11.1 CRDL testing board, connector on the conversion board “Small axis“ Y0005
Connector X1 for connection of
the CRDL testing board
Distance bolts with M3 threads
for fastening the CRDL testing board
Conversion board
'small axis' Y0005