X7056_Operating manual_en.pdf - 第39页
Product description System components 39 Inspection system X7056 | Operating manual | Version 3.1 Rev.006| 2016-01-06 | 30.009.1930a Printed circui t board clamping in the AXI t ransport cradle is accom- plished by a cou…
Product description
System components
38
Inspection system X7056 | Operating manual |
Version 3.1 Rev.006| 2016-01-06 | 30.009.1930a
Transport system
The inspection system has 2 inspection sections, one for the
optical inspection (AOI) and one for the X-ray inspection (AXI).
The transport system automatically feeds the printed circuit boards
in to and out of these sections. In- and outfeed happens before or
after the inspection. Furthermore, the transport raises the PCB to a
specific height and fixes it in place.
The transport system is described in the following sections:
Overview
Configuration of the transport system
Width adjustment
PCB stopper
Overview
In the AOI area a transport cradle moves the PCB in x-direction. In
the AXI section, there is a transport cradle which is moved in the
x- and y-directions.
Transport system, general view
The transport system is designed for PCBs up to 450 mm long, 50
to 350 mm wide, with a thickness between 0.5 and 5 mm.
Legend
No. Name Description
1 Transport cradle AOI Moves the printed circuit board in the
X-direction.
2 Transport cradle AXI Moves the PCB in x- and y-direction.
X
Y
2
1
Product description
System components
39
Inspection system X7056 | Operating manual |
Version 3.1 Rev.006| 2016-01-06 | 30.009.1930a
Printed circuit board clamping in the AXI transport cradle is accom-
plished by a coupled register drive, which allows the clamping
force to be adjusted. The weight of heavy PCBs can be compen-
sated for by increasing the clamping pressure of the integrated
springs.
There are two laser class 1 laser sensors - one in the front part of
the system between the AOI and AXI transport tracks and another
one to the right of the AXI transport track; the sensors trigger
when a PCB passes into a monitored area. This prevents potential
damage to the PCB from movement of the AXI transport track.
Configuration
of the trans-
port system
The inspection system is a single track system. The AOI transport
track passes the PCB to the AXI transport track with the help of a
belt drive.
Width adjust-
ment
The inspection system has an automatic, motor-driven rotational
width adjustment with an absolute measuring system. The trans-
port width is set during inspection plan creation or through the
product designation (barcode, 2-D data matrix code).
PCB stopper
A step motor actuates a latch, which acts as a stopper in its
extended position or is remains its initial position. An ultrasound
sensor queries the presence of a PCB.
AOI section positioning unit
The y-axis holds the image acquisition unit and positions it during
inspection over the various assemblies of the PCB to be inspected.
The AOI transport track moves the printed circuit board in the x-
direction.
AXI section positioning unit
The AXI transport track transports the printed circuit board in the
y-direction in the AXI section, where it is moved in the x- and y-
directions. The Z-axis allows the X-ray tube to be moved up and
down.
Lift gate
The lift gate separates the AOI and AXI sections. It opens so the
PCBs can be exchanged between the two sections. It isolates the
AXI section during inspection so no radiation leaks out.
Product description
System components
40
Inspection system X7056 | Operating manual |
Version 3.1 Rev.006| 2016-01-06 | 30.009.1930a
Image acquisition control
The function of the image acquisition control is to transfers camera
signals to the system computer.
Image acquisition control components:
VEB -102 (Page 40)
VEG-102 (Page 40)
VEB -102
The single camera modules of the image acquisition unit are
connected to the head station VEB-102 which controls the image
acquisition. The head station concentrates the camera signals and
transfers the image data via optical fiber to the frame grabber
(VEG-102).
VEB -102
VEG-102
The optical frame grabber VEG-102 is a PCI express slot card and
transfers the acquired image data to the system computer.