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User manual SIPLACE X-Series 3 Technical data and assemblies From software version 710.0 Edition 12/2016 3.6 G antry syst em 163 3.6.9 T ech nical dat a for Y axis SIPL ACE X2 S / X3 S / X4 S / X4i S 3 3.6.10 T echnical …
3 Technical data and assemblies User manual SIPLACE X-Series
3.6 Gantry system From software version 710.0 Edition 12/2016
162
3.6.8 Y axis structure
3
Fig. 3.6 - 6 Y-axis structure (example of SIPLACE X2 S / X3 S / X4 S shown)
The Y axis essentially consists of the following main modules:
(1) Y linear motors (primary part) on the X axis with fixed and loose bearing mounted
(2) Permanent magnet (secondary part of the X-axis linear motor)
(3) Linear distance measuring system
(4) Guidance system
(1)
(4)
(2)
(3)
(4)
User manual SIPLACE X-Series 3 Technical data and assemblies
From software version 710.0 Edition 12/2016 3.6 Gantry system
163
3.6.9 Technical data for Y axis SIPLACE X2 S / X3 S / X4 S / X4i S
3
3.6.10 Technical data for Y axis SIPLACE X4 S micron / X4i S micron
3
Drive Linear motor (primary drive)
Max. speed 2.5 m/s
Distance measuring system Linear metal scale
Resolution 1 µm
Drive Linear motor (primary drive)
Max. speed 2.5 m/s
Distance measuring system Linear metal scale
Resolution 0.5 µm
3 Technical data and assemblies User manual SIPLACE X-Series
3.7 PCB conveyor system From software version 710.0 Edition 12/2016
164
3.7 PCB conveyor system
3.7.1 Description
The PCB conveyors have a five-part design, comprising input conveyor, placement area 1, inter-
mediate conveyor, placement area 2 and output conveyor. The three areas input conveyor, inter-
mediate conveyor and output conveyor serve as buffer zones for the printed circuit boards.
The conveyor belts are driven by brushless DC motors. Light barriers monitor and control trans-
portation of the boards. Once the board has reached the placement area and has passed the light
barriers, it is braked. A laser light barrier records 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
below.
The distance between the top of the PCB and the placement head thus remains unchanged for
each PCB, and is not dependent on the thickness of the PCB. The placement rate is thus inde-
pendent of the PCB thickness. The PCB fiducial centering can also be optimized. Since the dis-
tance between the PCB surface and the PCB camera remains the same, the PCB camera is
always focussed on the PCB surface with the same sharpness. The PCB fiducial contours are op-
timally mapped on the CCD chip of the PCB camera.
The width of the circuit board conveyor is set and monitored by an integral control circuit. It can
be selected by calling up the program. The control electronics activate the drive motor until the
required width has been reached. The width adjustment is therefore independent of other machine
components.
The conveyor height can be selected on the machine to allow the machines to be integrated into
lines with a conveyor height of, 900, 930 or 950 mm. The standard height is 930 mm.
The PCB conveyors communicate with the individual machines via the SMEMA interface or the
optional Siemens interface.