00196504-02_UM_X-Serie_SR70X_EN - 第152页
Technical data for the machine User manual SIPLACE X-series PCB conveyor system From software version SR.70x.xx 01/2011 EN edition 152 3 Fig. 3.7 - 4 T ransport modes 3.7.2.3 Synchronous transport mode In synchronous mod…
User manual SIPLACE X-series Technical data for the machine
From software version SR.70x.xx 01/2011 EN edition PCB conveyor system
151
3
Fig. 3.7 - 3 Flexible dual conveyor in Single conveyor mode
3.7.2.2 Asynchronous transport mode
In asynchronous mode, only one PCB in a transport track is processed. At the same time, another
PCB in the second transport track is moved into the placement position. This saves the full con-
veying time of one PCB, thus considerably increasing performance, particularly for PCBs with a
short cycle time.
Once the machine has received the job data (panel, set-up), the PCBs on the feeding belts are
continuously transported to the available processing belt (provided that the processing belt is free)
throughout the placement operation. The placement sequence starts as soon as a PCB has
moved onto the processing belt. The PCBs are processed one after another.
If the placement sequence is interrupted, the conveyor interface will be disabled and the PCBs
currently on the processing belts will be completed.
The conveyor interface is disabled or enabled simultaneously for both transport tracks.
Dual conveyor with widened conveyor track 2
(stationary conveyor side wall on left)
Conveyor track 2
deactivated
Conveyor track 1 Conveyor track 2 Conveyor track 1
deactivated
PCB transport direction PCB transport direction
Stationary conveyor side wall
Dual conveyor with widened conveyor track 1
(stationary conveyor side wall on right)
Movable conveyor side wall
Technical data for the machine User manual SIPLACE X-series
PCB conveyor system From software version SR.70x.xx 01/2011 EN edition
152
3
Fig. 3.7 - 4 Transport modes
3.7.2.3 Synchronous transport mode
In synchronous mode, two PCBs of the same size are moved into the placement position at the
same time. They must be processed as a common panel.
This allows both the top and the underside of a PCB to be processed on the same line. The time
taken to move the PCBs is reduced as there are always two PCBs being transported at the same
time. It also ensures better utilization of the nozzle configuration.
PCBs on conveyor tracks 1 and 2 are moved synchronously onto the conveyor sections (i.e. the
conveyors are controlled synchronously, but independently of one another). The components to
be placed on conveyor tracks 1 and 2 must be organized into a panel via two subpanels. (See the
SIPLACE Pro user manual).
If only one conveyor track is full when the placement sequence starts, the subpanel on this section
will be identified as "not for placement".
If the dual conveyor is operated in synchronous mode, the ‘PCB whispering down the line’ option
is deactivated. The "Global bad fiducial" option cannot be used.
3.7.2.4 I-placement (SIPLACE X4I only)
Another placement concept has now been developed for the SIPLACE X4I in addition to synchro-
nous and asynchronous transport modes. This is known as I-placement. In this mode, the two
placement heads work simultaneously in one placement area and populate a PCB totally indepen-
dently of one another. Normally the placement heads work in alternating placement mode: while
the placement head is placing a PCB in one placement area, the other placement head picks up
Synchronous transport modeAsynchronous transport mode
User manual SIPLACE X-series Technical data for the machine
From software version SR.70x.xx 01/2011 EN edition PCB conveyor system
153
components from the feeder modules. With "I-placement", there are no such waiting times for the
placement heads, which increases the placement rate.
3.7.3 Controlling and width adjustment
3.7.3.1 Controlling using the Single Functions menu
The online help contains information on controlling the PCB conveyor system and on the Single
Functions menu.
3.7.3.2 Automatic width adjustment
When the command is received, the conveyor belts are set to the desired width. Different widths
are possible for a dual conveyor.
*See the Online Help for detailed information about changing the conveyor track width.
3.7.4 Technical data
3.7.4.1 Technical data for the PCB single conveyor - SIPLACE X4I
3
Fixed conveyor side right or left
PCB formats (length x width)
Standard 50 x 50 mm² to 380 x 535 mm²
a
PCB thickness (Standard) 0.3 mm to 4.5 mm (thicker PCBs available on
request)
PCB warpage see Section 3.7.8
, page 159
PCB weight max. 3 kg
Clearance on PCB underside (standard) 25 mm ± 0.2 mm
Component-free PCB handling edge min. 3.1 mm
PCB changeover time < 2.5 s
PCB positioning accuracy ± 0.5 mm
PCB conveyor height 830 mm ± 15 mm (optional)
900 mm ± 15 mm (optional)
930 mm ± 15 mm (standard)
950 mm ± 15 mm (SMEMA: optional)
Type of interface SMEMA / Siemens
b
Bad fiducial detection standard
Automatic width adjustment standard
a) With PCB widths > 450 mm make sure that the peripheral modules are also able to process these widths.
b) Option.