D-serie LEVEL II.pdf - 第166页
Component Handling Room for Your Sketches and Notes Empty Ta pe Duct S tuden t Guide Advanced Level 2 SIPLACE D Series Component Ha ndling EN 05/2007 9-16
Component Handling
Empty Tape Duct Room for Your Sketches and Notes
Student Guide Advanced Level 2 SIPLACE D Series
EN 05/2007 Component Handling
9-15
9.5 Room for Your Sketches and Notes
Component Handling
Room for Your Sketches and Notes Empty Tape Duct
Student Guide Advanced Level 2 SIPLACE D Series
Component Handling EN 05/2007
9-16
Modular Conveyor
General Functions
Student Guide Advanced Level 2 SIPLACE D Series
EN 05/2007 Modular Conveyor
10-1
10 Modular Conveyor
10.1 Functions
10.1.1 General
In the Processing Area (PA1 or PA2), the PCB board will be clamped from the bottom side against the
fixed holder on the conveyor system. Therefore, the space between the upper side of the board and the
placement head is independent of the board thickness and remains the same. This has the following
benefits:
The placement performance no longer depends on the board thickness.
Optimization of PCB fiducial centering:
The consistent space between the board upper edge and the PCB camera means that the PCB
camera is always optimally focussed on the upper side of the board. The PCB fiducial shape is
optimally imaged on the CCD chip of the PCB camera.
The PCB transport in the machine is configured so that the C&P12 head can place components up to a
maximum height of 6 mm.
The machine height can be set so that this machine can also be integrated into lines with transport
heights of 830, 900, 930 or 950 mm. Communication between the PCB conveyors of the different
machines is provided with the help of a SIEMENS interface or, as an option, via a SMEMA interface.
The transportation of the boards is monitored and controlled by light barriers, consisting of a transmitter
and a receiver module.
If the board has reached the placement area, the board is recognized by the light barrier and the
speed of the conveyor belt is reduced.
Approx.100ms later, a laser beam is used to recognize the front edge of the slowly moving board,
which is then stopped and clamped into place from below.
10.1.2 Clamping
The PCB is lifted for placement of components and pressed up against the PCB clamping rail. When the
lifting table rises the PCB and the complete conveyor drive unit is lifted up to the clamping position.
Therefore the placement level is constant and independent of the thickness of the PCB.
PCBs up to 368 mm long are clamped in the appropriate placement areas. Clamping does not take place
on the input and output conveyor. Boards with a length over 368 mm (option "long board": to 610 mm)
are kept in a clamped position on the conveyor belt up to a length of 360 mm (D1/D2: 440 mm) and are
then supported in the placement area only by the lifting table.