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JLI vision a/sJLI vision a/s

Inspection systems

Novel illumination methods

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JLI vision a/s

• Founded in 1985• 1.000 + systems in operation• High end advanced turnkey systems• System integrators• No other business than vision systems

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JLI vision a/s

Main business areas:

• Medical device inspection• Glass• Steel• Special applications

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Glass systemsGlass systems

Falls into two main categories:• Precise dimensional measurements

Self calibrating dimensions down to m

• Inspection systemsFault detection

• Statistical production control• Validated systems up to FDA standard

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Glass systemsGlass systems

• Container• Tableware• Tube• Tube ends• Chips & cracks• Preforms

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MeasurementsMeasurements

• Dimensions• Wall thickness• Lengths• Shapes

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Defect detectionDefect detection

• Cracks• Chips• Mould rings• Birdswings• Inclusions• Blisters• Airlines• Cord

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• Scene – how to get images with high contrasts

• Illumination – how to enhance the defects you want to find, or obtain sharp images for reliable measurements

Key challengesKey challenges

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• If you get a good image the programming is easy

• If you have been working with inspection for more than 30 years you will have a solid base of programmes for all applications.

ProgrammingProgramming

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• Vision systems are optical measurement devices

• Statistical data is collected and displayed – trend graphs and measurements

• Image storage of faults• Internet connection for remote data

processing and presentation

StatisticsStatistics

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Tableware inspection

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Lump edge - good

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Good edge

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Rim inspection DEMA

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Three different illumination patterns are necessary to find all defects

The dynamic light box is programmed by the vision system

Up to 25 patterns and analysis can be performed pr. second.

Dynamic Light Box

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Checks

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Dynamic Light Box

• Flexible and remote controlled structured lighting

• Excellent for fine tuning inspection • Fine tuning can be done remotely• When new models are introduced the

engineers can help the operators adjusting the system

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NIR or backlighting

• Examples of where Near Infra Red can be used

• Drawbacks and inherent problems• NIR images are blurred and noisy• NIR technology is not cheap

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NIR Tableware inspection

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NIR images 1991

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NIR and backlighting

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Hot conveyor

Line scan CCD matrix camera

Linescan generates the image Matrix camera takes a snapshot

by moving the object past the camera

Light box

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Line scan NIR CCD matrix camera backlighting

NIR is reflected from neighbouring Background lighting generates

containers, generating false signals no false reflections

Light box

Hot conveyor

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Signal

400 C 600 C Temp. X Mass

Radiation related to temperature times mass on a middleweight container.

Low temperature and thin wall gives a very small signal.High temperature and thick wall drives the CCD chip into saturation.

It is difficult to obtain a good dynamic range.

NIR signal response

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Problems with light weight containers

• NIR relies on radiation from the container

• The radiation is a function of wall thickness and temperature

• Temperature depends on cooling in the cavities and transport time on the hot conveyor

• The NIR signal from lightweight containers is poor.

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Backlighting

• Using backlighting, the glass distribution can be assessed with a resolution better than 0.1 mm on green and amber glass

• And it works equally well on hot and cold containers – this makes testing easy

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Glass distribution by backlighting

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Special features

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Bird swing classification

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Phone: +46 42 38 66 70Phone: +46 42 38 66 70

Fax: +46 42 20 16 86Fax: +46 42 20 16 86

info@gedevelop.com

www.gedevelop.comwww.gedevelop.com

Gedevelop ABGedevelop AB

Florettgatan 27Florettgatan 27

SE-254 67 HelsingborgSE-254 67 Helsingborg

SwedenSweden

The tolerances are set to:1 mm2 for the largest defectlargest defect.5 mm2 for the sum of defectssum of defects.5 for numbers of defectsnumbers of defects.

Two blisters

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Pharmaceutical glass

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Pharmaceutical glass

• Glass is used extensively for medicine• FDA has recently focused on the quality

of the glass tubing used for pharmaceutical products

• To make fault free glass containers you need high quality tubing

• No airlines and no stone and knots

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PDA Technical Report 43Parenteral Drug Association

Identification and Classification of Nonconformities in Molded and Tubular Glass Containers for Pharmaceutical Manufacturing

The purpose of this technical report is to provide consistent, standardized quality criteria that can be used by pharmaceutical companies for the visual inspection of incoming glass containers.

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SK 3000

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SK 3010 specifications

• Tube diameter: 1.0 - 50 mm.• Max wall thickness: 15% of tube diameter.• Line speed: 0 - 10 Metres / sec.• Smallest detectable stone/knot: 0.05 mm. • Shortest detectable airline length: 2 mm. • Smallest airline width detected: 0.02 mm.• Durable sodium street lighting with a service life of

more than 5 years.• Internet connection for remote servicing

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Defect / reject relations

• 4 airlines max 25 mm in length within one length is acceptable AND• 2 airlines max 50 mm in length within one length is acceptable AND• 1 airline max 100 mm in length within one length is acceptable.

Stone & knot inspection is set in a similar way. An example:

• 4 stones/knots above 0.1 mm in diameter is acceptable AND• 1 stone/knot above 0.3 mm in diameter is acceptable AND• 0 stones/knots above 1 mm in diameter is acceptable

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Defect detection

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End formed tubes

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Summery

• JLI makes the high end vision systems• The tailor made systems that needs

engineering and adaptations• The “impossible” jobs• All systems are delivered with a

functional guarantee and a

“no cure no pay” clause

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