00900002-01_UM_ASM-ProcessLens_EN - 第48页
3 Machine description 3.1 Overview of the modules 48 Instruction Guide ASM ProcessLens 02/2017 3.1.4 Definition of PCB warpage This is the maximum allowable PCB warpage for the SPI to be able to measure accurately. 3.1.4…
3 Machine description
3.1 Overview of the modules
Instruction Guide ASM ProcessLens 02/2017 47
3.1.3 PCB conveyor assembly
Fig.31: PCB Conveyor
A Front side of the machine B Rear side of the machine
1 Rear conveyor rail 2 Conveyor control unit
3 Fixed front rail 4 Lifting table
5 Stopper and sensors rail
3.1.3.1 Description
The PCB conveyor is a single lane conveyor. The machine requires a length of 1100 mm. Both
sides have a 15 mm extension to the upstream or downstream conveyor. The total length of the
conveyor is 1130 mm. The standard conveyor is a front fixed rail and it only has one lifting table
without input/output buffer. A conveyor extension option exists to increase the length of the single
stage conveyor to allow for a barcode capability to be attached where no upstream conveyor ex-
ists.
3 Machine description
3.1 Overview of the modules
48 Instruction Guide ASM ProcessLens 02/2017
3.1.4 Definition of PCB warpage
This is the maximum allowable PCB warpage for the SPI to be able to measure accurately.
3.1.4.1 PCB warpage on the conveyor
PCB warpage across the direction of travel max. 1% of the PCB diagonal, but not exceeding
±5mm.
1 Fixed clamped edge 2 Printed circuit board
3 Movable clamping device 4 Conveyor rail
5 +/- 4.5 mm
PCB warpage in the direction of transport + PCB thickness < 5.5 mm. Bending up of board edge
max. 2.5 mm.
1 Fixed clamped edge 2 Front board edge
3 Max. 2.5 mm 4 Conveyor belt
5 PCB transport direction 6 5.5 mm
3 Machine description
3.1 Overview of the modules
Instruction Guide ASM ProcessLens 02/2017 49
1 Front board edge 2 Max. 2.5 mm
3 Conveyor rail 4 PCB transport direction
5 Max. 2.5 mm 6 Max. 3 mm
3.1.4.2 Maximum PCB warpage allowed during processing of the board by ASM
ProcessLens
There is active PCB warpage measurement and tracking during the inspection so that images re-
main in sharp focus, ensuring best height measurement accuracy on the market.
1 Fixed clamped edge 2 Printed circuit board
3 ≤ 2 mm 4 Movable clamping device
5 Conveyor rail
PCB warpage down, max. 4.5 mm