WEBVTT - generated by wenglor-media

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The safe and durable installation of car windows

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requires maximum precision in the pre-treatment
process.

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Before the glass is bonded,

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the edge of the window is coated with a special
polyurethane coating.

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This ensures a secure and durable connection

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to the vehicle frame.

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In order to fully automate this process

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and collect important measurement data,

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the machine manufacturer BBG from Mindelheim
in Germany

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has developed a scientific test facility.

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The entire system relies

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on machine vision products from wenglor.

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The windows are placed in a rotating rack

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and loaded outside the enclosed system.

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A robot then removes a window from the interior

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and begins the finishing process.

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Two B50 vision sensors from wenglor

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are used for high-precision alignment

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and pre-treatment control.

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The first sensor assists the robot

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in precisely centering the glass disk.

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The second sensor uses an

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UV ring light to monitor the seamless application
of the coating,

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which serves as an adhesive between the glass
and polyurethane.

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We were able to integrate the B50 vision sensor

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ourselves easily via the Profinet/Ethernet
interface.

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In addition, data evaluation and operation
were possible in parallel,

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which was very important to us.

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Another key feature was the tabular calculation
function

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in an Excel-like structure in the uniVision
3 software.

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After applying the coating,

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the robot places the glass disk in the curing
tower,

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where the primer dries under controlled conditions.

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At the same time,

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another robot cleans the tool in a mold carrier,

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preparing it for recasting the component.

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To overcome the challenges

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of reflective light and surface conditions,

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the B60 smart camera used is equipped

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with an additional infrared light from wenglor.

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The B60 smart camera mounted on the cobot

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checks whether the mold has been completely
cleaned.

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It is crucial that the tool is 100% clean,

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and thanks to its high resolution,

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the B60 identifies even the smallest particles,

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thus ensuring a stable quality assurance process.

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The captured images are forwarded

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to the higher-level control system

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via the integrated Ethernet interface

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and then evaluated using AI.

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Once the cleaning process is complete,

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a robot retrieves the finished glass disk from
the tower

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and places it in the mold carrier.

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There, it is encased in polyurethane.

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The robot then removes the finished component

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and takes it to the trimming station,

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where excess burrs

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and polyurethane residues are precisely removed.

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Finally, an MLWL 2D/3D profile sensor from
wenglor

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checks whether even the smallest material residues

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remain on the component.

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If corrections are necessary,

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the component is trimmed again

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until a burr-free result is achieved.

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The combination of BBG’s system expertise

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and wenglor’s machine vision products

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enables the production of high-quality finished
glass disks.

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At the same time,

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the entire manufacturing process

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– from glass supply to the finished component
–

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is monitored reliably and transparently.