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3 Technical data and assemblies User manual SIPLACE TX V2 3.7 PCB conveyor system From software version 711.1 04/2018 132 3.7.2.4 Synchronous transport mode In synchr onous mode , two PCBs of the same size are transporte…
User manual SIPLACE TX V2 3 Technical data and assemblies
From software version 711.1 04/2018 3.7 PCB conveyor system
131
3.7.2.3 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 placement machine has received the job data (panel, setup), the
boards on the input conveyors are continuously transported to the available processing conveyor
(provided that the processing conveyor is free) throughout the placement operation. The place-
ment process begins as soon as a board is transported into the processing area. 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.
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Fig. 3.7 - 3 Transport modes
Synchronous transport mode
Asynchronous transport mode
3 Technical data and assemblies User manual SIPLACE TX V2
3.7 PCB conveyor system From software version 711.1 04/2018
132
3.7.2.4 Synchronous transport mode
In synchronous mode, two PCBs of the same size are transported into the placement position at
the same time. They are processed as a common panel. When using products with greatly differ-
ing placement content, common optimization increases the performance of the whole content on
both boards.
The time needed to transport the board is reduced as two boards are always 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.
If only one conveyor lane is occupied at the beginning of placement, this single use of the con-
veyor lane will be identified as "not to be placed".
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.
3.7.2.5 I-Placement
In addition to synchronous and asynchronous conveyor modes, I-Placement is also available. In
this mode, the two heads work simultaneously and populate a PCB totally independently of one
another. This further increases the output.
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.
User manual SIPLACE TX V2 3 Technical data and assemblies
From software version 711.1 04/2018 3.7 PCB conveyor system
133
3.7.4 Definition of PCB warpage
3.7.4.1 PCB warpage on the conveyor
PCB warpage across the direction of travel max. 1% of the PCB diagonal, but not exceeding 2
mm.
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PCB warpage in the direction of transport + PCB thickness < 5.5 mm. Bending up of board edge
max. 2.5 mm.
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3
Fixed clamped edge
Movable clamping device
Printed circuit board
Conveyor side wall
Fixed clamped edge
Conveyor belt
PCB transport direction
Front board edge
Front board edge
Right conveyor belt
Left conveyor belt
PCB transport direction