Sarantel gets close with Multipix

01 November 2007

Sarantel, manufacturer of miniature filtering antennas, has invested in a new vision sensor to combat problems created when dealing with tiny components.

The Wellingborough headquartered company has installed a Cognex In-Sight 5401 following a Multipix vision seminar.

As mobiles and handheld devices get smaller so do the components, including Sarantel’s antennas. The company found its original vision system lacked flexibility and its ability to identify filters and pattern patches was being compromised.

The Cognex sensor incorporates PatMax, which is designed to match the PCB assembly on the part with an impressive 180° tolerance. The system also recognises the individual part, offers on-site programming and allows remote access of the system.

Each cylindrical antenna is 9mm high and 7.5mm in diameter. They are placed in a tray which is then put under the sensor for reading. The sensors are used specifically to identify four location co-ordinates, or fiducials, on each part. These fiducials are used for part tuning and laser trimming so there can be no room for error. The positions are so small that accurate part location readings are vital, with the added challenge of a part arriving in a slightly different orientation each time.

Ian Green, maintenance manager at Sarantel, praised the sensor, claiming the quick nature of the programming allowed more experimentation.

“Overall, it has given us more flexibility and the ability to find the part more accurately,” he said. “Cognex has allowed us to look into the future without forgetting our past.

“With the proven success of the In-Sight sensor, we intend to replace the existing sensors used on our production lines.”

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