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

A technology of appearance defects and machine vision, which is applied in the direction of measuring devices, optical devices, and optical testing of defects/defects, can solve problems such as difficulty in adapting to detection speed, poor objectivity of quality standards, and slow detection methods, so as to improve detection accuracy. and anti-interference ability, improve efficiency and reduce production cost

Inactive Publication Date: 2011-10-19
CHINA JILIANG UNIV
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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

Method used

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

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Embodiment Construction

[0031] Such as figure 1 As shown, the machine vision-based online detection device for small connector appearance defects of the present invention mainly includes a red LED backlight 1, an industrial camera 2, a PC 3 containing an image acquisition card 7, a proximity switch 4, a PLC controller 5 and a bracket 6 . Among them, the red LED backlight 1 is fixedly installed on the bracket 6, and the industrial camera 2 is installed on the bracket 6 and can move up and down, so as to adjust the distance between the industrial camera 2 and the detected small fine blanking connector 12 so that it can be The detected small fine blanking connector 12 is in a suitable position in the field of view of the industrial camera 2, and the suitable position means that the detected small fine blanking connector 12 occupies about 3 / 4~4 / 5 of the field of view of the industrial camera 2 . The red LED backlight 1 is located directly below the lens of the industrial camera 2 . The bracket 6 is pr...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/89G01B11/00
Inventor 孙坚付民陈乐钟绍俊徐红伟
Owner CHINA JILIANG UNIV
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