Author: DAHENG IMAGING Date: 2021-11-22
Industry: Automobile Manufacturing
Project: Steering wheel wiper turn signals pull rod screen printing inspection system
Background
The quality of the car does not only rely on the quality of the automobile exterior coating, but also on the quality of the interior trim printing. Traditional steering wheel wiper turn signals pull rod screen printing inspection mostly adopt the manual inspection measures, which not only takes a long time, but also has a high probability of misjudgment or missed judgment due to human subjectivity. So it cannot meet the needs of large-scale assembly production line and inspection of modern vehicles. Machine vision, as a non-contact, high-precision, high-reliability detection method, plays an important role in the detection of printing defects, and can effectively improve the level of intelligence and automation of the factory assembly line.
Requirements
Steering wheel wiper turn signals pull rod
It is necessary to detect and identify various defects of pad printing patterns, such as discoloration, dot lines, lose print, double print, offset, etc. Pad printing pattern's color is uncertain and needs to be compatible with white, metallic or transparent color. And the field of view is approximately 66 mm × 44 mm, accuracy required ±0.02 mm.
Solution
The steering wheel wiper turn signals pull rod screen printing quality inspection system consists of an area scan camera, industrial lens, light source, and algorithm platform, which is installed on the pull rod production line. By pre-training the target images with markers, the system acquires images during the production of pull rods and classify the defects to determine their categories and mark them, thus realizing the quality inspection of steering wheel wiper turn signals pull rod screen printing.
Presentation
Equipment operation picture
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OK image | Lose print | |
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Discoloration | Void | |
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Original image | Offset |
Related products
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Address：12F Daheng Science & Technology Tower, No.3 Suzhou Str., Haidian District, Beijing China
E-mail：isales@daheng-imaging.com
