Device and method for online detection on appearance defect of minitype connecting part based on machine vision

Abstract

The invention discloses a device and a method for online detection on appearance defect of a minitype connecting part based on machine vision. The detecting device comprises a red LED (light-emitting diode) backlight source, an industrial camera, a PC machine containing an image collecting card, a proximity switch, a PLC (programmable logic controller) and a bracket, wherein the red LED (light-emitting diode) backlight source is fixedly arranged on the bracket; the industrial camera is arranged on the bracket and can move up and down so that the detected connecting part is within the visual field of the industrial camera; the red LED (light-emitting diode) backlight source is arranged right below the lens of the industrial camera; the bracket is provided with a detecting worktable that is arranged between the red LED (light-emitting diode) backlight source and the industrial camera; the detecting worktable is provided with a light-permeable hole at the visual capturing field of the industrial camera; the PLC is connected with the red LED (light-emitting diode) backlight source, the industrial camera, the PC machine and the proximity switch respectively; and the proximity switch approaches to the detecting worktable. The device and the method can realize the aim of online detection on the appearance defect of the minitype finely-blanked connecting part inerrably at high speed and high precision.

Description

technical field [0001] The invention is a machine vision-based online detection device for appearance defects of small connectors, and relates to a device for detecting size and shape defects of small connectors using machine vision technology. Background technique [0002] The small fine-blanking connector is a product part of a certain shape, size and performance obtained by means of the power of conventional or special stamping equipment, so that the sheet is directly subjected to deformation force and deformed in the mold. With the rapid development of electronics, clocks, computers and other industries, the consumption of small fine blanking connectors widely used in these industries is also increasing rapidly. [0003] The traditional method of online detection of appearance defects of fine blanking connectors is to rely on specially trained appearance quality inspection workers to inspect the connectors on the production line through hand touch, visual inspection, lig...

AI Technical Summary

Problems solved by technology

Due to factors such as visual fatigue and mood swings of quality inspection workers, the traditional method inevitably has poor quality standards, and the detection method is slow, and it is difficult to adapt to the current detection speed of hundreds or even thousands per minute. In addition, this method For contact measurement, it is easy to cause different degrees of damage to the detected object

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