00198442-01_UM_TX-V2_EN.pdf - 第127页
User manual SIPLACE TX V2 3 Technical data and assemblies From software version 711.1 04/2018 3.6 G antry syst em 127 3.6.4 Y axis structure 3 Fig. 3.6 - 4 Y axis structure The Y axis essentially consists of the followin…
3 Technical data and assemblies User manual SIPLACE TX V2
3.6 Gantry system From software version 711.1 04/2018
126
3.6.3 Gantry structure
3
Fig. 3.6 - 3 Gantry structure - view of head mount
(1) Head boards
(2) Gantry arm
(3) Y linear motor with fixed bearing (primary part)
(4) Mount for conversion board and trailing cable holder
(5) End position bumper (4x)
(6) Guidance system with permanent magnet (secondary part of the X linear motor)
(7) Length measurement system
(8) Head mount with X axis linear motor (primary part)
(4)
(3)
(1)
(5)
(2)
(6)
(7)
(5)
(8)
User manual SIPLACE TX V2 3 Technical data and assemblies
From software version 711.1 04/2018 3.6 Gantry system
127
3.6.4 Y axis structure
3
Fig. 3.6 - 4 Y axis structure
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) Length measurement system
(4) Guidance system
(1)
(4)
(3)
(2)
(4)
3 Technical data and assemblies User manual SIPLACE TX V2
3.7 PCB conveyor system From software version 711.1 04/2018
128
3.7 PCB conveyor system
3.7.1 Description
The PCB conveyors are designed as three-part conveyors with input, processing and output con-
veyor sections. The two areas, input 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 place-
ment machine components.
The conveyor height can be selected on the placement machine to allow them to be integrated
into lines with a conveyor height of, 900, 930 or 950 mm. The standard height is 930 mm.
The communication between the PCB conveyors of the individual placement machines takes
places via the SMEMA interface.