西门子SIPLACE S-27 HM用户手册.pdf - 第100页
3 Technical data User Manual SIPLACE S-27 HM 3.10 PCB conveyor Software version SR.503.xx07/2003 US Edition 100 3.10 PCB conveyor 3.10.1 Description The plac ement sy stem is supplie d with a s ingle co nveyo r as standa…
User Manual SIPLACE S-27 HM 3 Technical data
Software version SR.503.xx 07/2003 US Edition 3.9 Vision modules
99
3.9.4 Standard PCB camera (type 5) 27
3.9.4.1 Structure
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Fig. 3.9 - 3 Standard PCB camera (type 5) 27
(1) PCB camera, lens and illumination
(2) Camera amplifier
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3.9.4.2 Technical data - PCB camera, standard (type 5) 27
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Fiducials Up to 3 per placement program
Library size Up to 255 fiducial types - system fiducials ≥ 249
Image processing Geometric alignment
Method of illumination Front-lighting
Recognition time per fiducial/bad fiducial 0.4 s
Field of vision 5.7 mm x 5.7 mm
3 Technical data User Manual SIPLACE S-27 HM
3.10 PCB conveyor Software version SR.503.xx07/2003 US Edition
100
3.10 PCB conveyor
3.10.1 Description
The placement system is supplied with a single conveyor as standard. A dual conveyor is avail-
able as an option. The left or the right side of the PCB conveyor can be used as the stationary
side, as required.
For placement, the PCB is clamped from below. The distance between the top of the PCB and the
placement head thus remains unchanged for each PCB, and is no longer dependent on the thick-
ness of the PCB. The placement rate is thus also independent of the PCB thickness. In addition,
the PCB fiducial centering can be optimized. Since the distance between the PCB surface and the
PCB camera remains the same, the PCB camera is always focussed on the PCB surface with the
same level of sharpness. The PCB fiducial contours are optimally mapped on the CCD chip of the
PCB camera. 3
The width of the circuit board conveyor is set and monitored by an integral control circuit. It can
be selected for each program call. The control electronics then actuate the stepping motors until
the desired width is reached. The width adjustment is therefor independent of other machine com-
ponents. 3
The transport height can be modified, thus allowing the machines to be integrated into lines with
a transport height of 830, 900, 930 or 950 mm. Communication between the PCB conveyors of
the individual systems is via the SIEMENS or SMEMA interface, as desired. The fixed transport
side can be located on the left or right for both the dual conveyor and the single conveyor. With
this conveyor, the fixed side can be easily switched from right to left or vice versa. 3
The circuit board conveyor is monitored and controlled with optical sensors. If the board has
reached placement area and passed the light barrier, it is braked. A laser light barrier determines
the position of the board. As soon as the circuit board has reached its target position, the conveyor
belt is stopped and the board is clamped from the underside. 3
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User Manual SIPLACE S-27 HM 3 Technical data
Software version SR.503.xx 07/2003 US Edition 3.10 PCB conveyor
101
3.10.2 Single conveyor
3.10.2.1 Structure
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Fig. 3.10 - 1 PCB single conveyor
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(1) Input conveyor
(2) Center conveyor
(3) Output conveyor
(4) Lifting table
(5) Width adjustment
T Direction of PCB transport