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 The strength and flexibility of our G2 modular design
Optical Lens Printer With Visual Inspection
CONSUMER PRODUCT INDUSTRY
This lens marking system is based on our G2-150 modular pad printing system. The purpose of the system is to print registration marks on lenses prior to the grind process. For this application, the G2-150 was outfitted with two independently-actuated print heads and a two-up 115mm inking kit.
The print cycle is triggered automatically by the on board intelligent visual inspection system. This system senses the presence of the lenses in the fixture tooling, and in response it activates a vacuum retention device and backlighting for each lens. The print cycle is executed, and then the results are automatically registered by the visual inspection system.
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The two-up fixture tooling is mounted on a two-position shuttle for conveying the lenses between the load and print stations. An automatic pad tape-off unit is also installed on the system. In production, the lenses to be marked vary greatly in diameter and thickness; the engineering of this system enabled it to accommodate the variations without operator intervention.
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This image shows detail of the visual inspection system's input camera, focused over a just-printed lens. Note the back-lighting being applied through the fixture nest.
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This image shows the display output of the visual inspection system. The 10-inch LCD panel is mounted on the front of the G2-150.
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