00195941-03-UM SiplaceCA-EN - 第234页
3 Technical Data User Manual SIPLACE CA 3.14 PCB Single Conveyor Edition 0 8/2011 EN 234 3.14.2 T echnical Dat a 3 3 Fixed conv eyor side Right or left PCB dimensions Standard (len gth x width) Configuration "Width …
User Manual SIPLACE CA 3 Technical Data
Edition 08/2011 EN 3.14 PCB Single Conveyor
233
3.14 PCB Single Conveyor
[00119625-xx] Modular single conveyor II, 2380 mm
[00119626-xx] Fixed conveyor side right, HF/X/CA/D series
[00119628-xx] Fixed conveyor side left, HF/X/CA/D series
[00119629-xx] Conveyor width 250/508 mm, HF/X/CA series
In its standard version, the placement machine is equipped with a PCB single conveyor. The PCB
dual conveyor is available as an option ex factory (see section 3.15
, page 238). The left or the
right side of the PCB conveyor can be used as the stationary side, as required.
The conveyor belts are driven by DC motors. There is a lifting table for clamping the PCBs in each
processing area. The PCB conveyor width can either be set from the user interface or preset in
the placement program.
3.14.1 Structure
3
Fig. 3.14 - 1 Structure of the PCB single conveyor
(1) Input conveyor (2) Processing conveyor 1
(3) Intermediate conveyor (4) Processing conveyor 2
(5) Output conveyor (6) Lifting table 1
(7) Lifting table 2 (8) Assembly tub
3 Technical Data User Manual SIPLACE CA
3.14 PCB Single Conveyor Edition 08/2011 EN
234
3.14.2 Technical Data
3
3
Fixed conveyor side Right or left
PCB dimensions
Standard (length x width)
Configuration "Width PCB"
Configuration "Conveyor width 21"
Long board option
a
Long board option and Wide board
configuration
50 mm x 50 mm to 450 mm x 460 mm
b
50 mm x 50 mm to 450 mm x 508 mm
b
50 mm x 50 mm to 450 mm x 533 mm
b
50 mm x 80 mm to 610 mm x 460 mm
b
50 mm x 80 mm to 610 mm x 508 mm
b
PCB thickness
Standard 0.3 mm to 4.5 mm ± 0.2 mm
(thicker PCBs on request)
Vacuum tooling on request
Thin PCBs on a carrier
PCB warpage see section 3.14.4
, page 235
PCB weight Up to 3 kg
Clearance on PCB underside
Standard
Option
25 mm ± 0.2 mm
max. 40 mm ± 0.2 mm
Component-free PCB handling edge 3 mm
PCB changeover time < 2.5 s
PCB positioning accuracy ± 0.5 mm
PCB transport height 830mm ± 15mm (standard)
900mm ± 15mm (optional)
930mm ± 15mm (optional)
950mm ± 15mm (SMEMA: optional)
Type of interface SMEMA / Siemens
Bad fiducial detection possible
Automatic width adjustment possible
a) See option "Long board", section 7.9, page 473
b) With PCB widths > 450 mm make sure that the peripheral modules are also able to process these widths.
User Manual SIPLACE CA 3 Technical Data
Edition 08/2011 EN 3.14 PCB Single Conveyor
235
3.14.3 Functional Description
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 not dependent on the thickness of
the PCB. The placement rate is thus independent of the PCB thickness. The PCB fiducial center-
ing can also be optimized. By the constant space between PCB-surface and PCB-camera the fo-
cus of the PCB-camera is constantly adjusted sharp on the PCB-surface. The PCB fiducial
contours are optimally 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 circuit then actuates the stepping motors until
the desired width is reached. The width adjustment is therefore independent of other machine
components.
The conveyor height can be selected on the placement machine, so that this can be integrated
into lines supporting conveyor heights of 830, 900, 930 or 950 mm.
The communication between the PCB conveyors and the individual placement machines is via a
SMEMA interface or an optional Siemens interface.
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 and vice versa
using the station software.
The circuit board conveyor is monitored and controlled with optical sensors. If the PCB reaches
the placement area and passes the light barrier, it is slowed down. 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 below.
3.14.4 PCB Warpage
NOTE 3
In order to adhere to the set board curvature, use the vacuum tool for thin substrates (less than
0.7 mm) .
NOTE 3
The vacuum tool is not always essential. However, it is needed for use with thin substrates, to
ensure placement accuracy and error-free handling.