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Method for detecting bottle opening cracks of liquid-carrying glass bottle

A technology for crack detection and glass bottles, which is applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as eye damage, low detection stability, and ineffective detection of bottle mouth cracks, so as to eliminate interference, The effect of reducing the impact

Active Publication Date: 2021-06-01
CHENGDU HONGRUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the vertical and clamping mechanical structure, the cracks at the bottle mouth caused by the filling and capping process cannot be effectively detected. Therefore, a manual re-inspection station is usually set up at the rear end of the foreign object light inspection machine. The speed and defect detection rate of manual light inspection are greatly affected by the subjective consciousness of light inspectors, resulting in low detection stability; and long-term manual light inspection will cause damage to the eyes of light inspectors

Method used

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  • Method for detecting bottle opening cracks of liquid-carrying glass bottle
  • Method for detecting bottle opening cracks of liquid-carrying glass bottle
  • Method for detecting bottle opening cracks of liquid-carrying glass bottle

Examples

Experimental program
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Effect test

Embodiment 1

[0034] like figure 2 As shown, this embodiment is mainly aimed at transverse cracks, and the transverse crack detection method is:

[0035] Step 1. Turn the bottle to be tested upside down so that the mouth of the bottle is vertically downward;

[0036] Step 2. Use two light sources of complementary colors to irradiate the bottle to be detected at a certain angle for image acquisition; in this embodiment, red and green strip light sources of complementary colors are used to irradiate the bottle to be detected, and the light sources are installed horizontally on The back side of the bottle to be inspected, and the light source angles are 45° and 60° respectively, and the image is collected around the bottle circumference;

[0037] Step 3, extracting the highlighted area in the detection area and the adjacent areas around the highlighted area to form the area to be processed, which can be extracted by using the threshold method, and the specific extraction steps are existing t...

Embodiment 2

[0043] like image 3 As shown, this embodiment is mainly aimed at vertical cracks, and the detection method for transverse cracks is:

[0044] Step 1. Turn the bottle to be tested upside down so that the mouth of the bottle is vertically downward;

[0045] Step 2. Use two light sources of complementary colors to irradiate the bottle to be inspected at a certain angle for image acquisition; in this embodiment, red strip light sources and green strip light sources of complementary colors are used to illuminate the bottle to be inspected, and the light sources are installed vertically On the back side of the bottle to be detected, and the angle between the light-emitting surfaces of the two light sources is 120°, image acquisition is performed around the bottle;

[0046] Step 3, extracting the highlighted area in the detection area and the adjacent areas around the highlighted area to form the area to be processed, which can be extracted by using the threshold method, and the sp...

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Abstract

The invention belongs to the technical field of bottle opening crack detection, and provides a method for detecting bottle opening cracks of a liquid-carrying glass bottle and aims to realize automatic detection of the bottle opening cracks of the liquid-carrying glass bottle. The method comprises the following steps of: 1, inverting a to-be-detected bottle, and enabling the bottle opening of the to-be-detected bottle to be vertically downward; 2, irradiating the to-be-detected bottle at a certain angle by adopting two light sources which are complementary in color, and carrying out image acquisition; 3, extracting a highlight area in a detection area and adjacent areas around the highlight area to form an area to be processed; 4, extracting the to-be-processed area through multiple channels; and 5, judging the bubbles and the cracks according to the imaging effects of the bubbles and the cracks. By adopting the above steps, automatic detection of the bottle opening cracks of the liquid-carrying glass bottle can be realized, and bubble interference can be eliminated.

Description

technical field [0001] The invention relates to the technical field of crack detection at the bottle mouth, in particular to a method for detecting cracks at the mouth of a liquid-filled glass bottle. Background technique [0002] Glass bottles have the advantages of good transparency, excellent thermal stability, pressure resistance, no deformation of the bottle body, and good air tightness. However, during the firing process of glass bottles, cracking due to uneven heating often occurs. In order to ensure the tightness of medicines, companies usually use empty bottle inspection machines to reject unqualified glass bottles. Commonly used bottle inspectors include linear empty bottle inspectors and full servo empty bottle inspectors, which recycle defective glass bottles before filling. In fact, whether it is a linear or full-servo empty bottle inspection machine, it can only guarantee the qualified rate of glass bottles before canning, but in the process of filling and ca...

Claims

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Application Information

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IPC IPC(8): G01N21/958
CPCG01N21/958
Inventor 李明飞王素榕任强李聪任秦
Owner CHENGDU HONGRUI TECH
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