WEB INSPECTION
‘Glass producers are developing the high- scale industrialisation of new ultra-thin glasses for foldable applications or wafer applications’
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use, cost-effective line scan imaging solution to meet the requirements of space-limited systems, such as print, printed circuit board, and web inspection,” explains Xing-Fei. Te new systems are powered by Teledyne’s new quadrilinear CMOS image sensor technology, which delivers up to 120kHz line rates for mono and 60kHz x 3 for colour, at 900 dpi resolution. Tis enables errors to be detected with exceptional precision, contributing towards the zero-defect manufacturing strategy. Xing-Fei says AxCIS is targeting the
increasing demands being placed on vision technology for automatic inspection with improved detectability, particularly in battery manufacturing. Trough its 900 dpi high-resolution and HDR mode, the system is well positioned to deliver high-accuracy inspection of anode and cathode coatings.
Powering up paper production Also striving for a future of automated, zero-defect manufacturing are vision firms Matrox Imaging and Active Inspection (AI), which through a case study share how one of AI’s web inspection systems can enable 100% inspection of surfaces, printing, and labels. Te system includes, among other components, multiple Piranha
Imaging solutions are increasingly being used to inspect thin glass materials for defects, which are used in the manufacture of automotive and smartphone displays
monochrome line-scan cameras from Teledyne Dalsa, Lotus LED line lights from Prophotonix, and Matrox’s Imaging Library (MIL) and Camera Link frame grabbers. Te study covers paper mill Knowlton
Technologies’ instalment of the AI Surface system, and how this enabled it to improve its product quality while significantly reducing labour costs. “AI Surface let us remove three workers from a 100% manual inspection procedure and place them in higher, value-added positions as soon as the system was installed, which allowed us to realise a quick return on our investment,” says Richard Barlow, Advanced Materials Engineer at Knowlton Technologies. “Also,
the user interface is set up so that it is simple to create multiple custom classifiers for various customer needs and link to their specific grades. And our machine operators are very pleased with how easy it is to operate the inspection system.” Te images are processed using MIL’s
image processing, blob analysis and calibration modules. Processing operations used include convolution, binarisation, morphology (dilate and erode), flat-field correction and projection. Te overall system inspects a web that is 330cm wide at a rate of 204m/min, detecting defects as small as 0.2mm x 0.2mm. It includes access to a built-in classifier complete with a decision matrix, with no limit to the number of recipes that can be stored – specialised quality settings may be applied according to product, job, order or substrate. AI plans to develop inspection systems
using CMOS cameras that support higher line speeds, with the firm looking to offer support for up to 16 cameras – twice the amount that can currently be supported.
Capitalising on carbon fibre inspection Te quality of aerospace-grade carbon fibre is still, in many cases, assessed manually, leading to a process that shows an abundance of human errors. Tis leaves potential for the process to become one of the many currently being optimised via automated web inspection systems. Imaging firm Chromasens and its
Imaging systems are being developed for detecting transverse filaments and fibre bundles (lint) during carbon fibre manufacturing
26 IMAGING AND MACHINE VISION EUROPE APRIL/MAY 2023
partners capitalised on this opportunity with the development of the AirCarbon II automatic inspection system in 2016.
@imveurope |
www.imveurope.com
Fraunhofer IGCV
Isra Vision
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