Bottle opening defect detection device and method thereof

Abstract

The invention discloses a bottle opening defect detection device and a method thereof. The device and method are used to detect the planarity of the end face of the bottle opening of a plurality of glass bottles. The device comprises a video and image processing unit, a video and image obtaining unit, and a glass bottle delivering unit. The method comprises the following steps: at first, delivering glass bottles to the video and image obtaining unit by the glass bottle delivering unit, obtaining the images of the end face of the bottle opening of the glass bottles by the video and image obtaining unit, performing Blob calculation by the video and image processing unit to obtain the number of spots in the images of the end face of the bottle opening, and judging whether the bottle opening end face is intact or not based on the number of spots. According to the method, an imaging technology of Blob calculation method is utilized, the calculation is simple, thus the integrity of the bottle opening end face of the glass bottles can be judged quickly, the production requirement can be met, the bottle opening end faces can be all inspected, and the problem of gas leakage caused by bad bottle opening end face is solved radically.

Description

technical field [0001] The invention relates to a bottle mouth, in particular to a detection device and a method for the end face of the bottle mouth. Background technique [0002] Glass bottles can be filled with liquids. They are one of the most common beverage containers for commercially available beverages. Glass bottles are more airtight than aluminum foil. They are often used in beauty or health drinks that are more perishable. They are widely used beverage containers. [0003] Due to the unevenness of the bottle mouth, gaps, scratches, etc., it will cause leakage after sealing the bottle. It is known that there are multiple technologies for checking the mouth of the bottle. For example, Taiwan New Announcement No. 191541 "A device for inspecting bottle mouths or similar objects" patent, which mainly adopts the method of gray value evaluation and comparison. When the difference in gray value between two adjacent areas is greater than the set A certain maximum limit (...

AI Technical Summary

Problems solved by technology

This image processing method needs to repeatedly compare the gray value of each adjacent area, especially when the resolution increases, the number of each adjacent area will increase rapidly, that is, the number of comparisons will increase rapidly, resulting in a large amount of calculation. Huge, it is impossible to judge whether it is a defective product in a short time, and it cannot keep up with the output of the existing production line, so it can only be carried out by random inspection

[0004] And China Taiwan Patent No. 592295 "Bottle Mouth Tooth Area Inspection Equipment", which also uses grayscale comparison to judge whether there is a defect, and in order to speed up the image processing speed, its image processing technology uses a one-dimensional curve approximation To replace the two-dimensional surface approximation, the complexity of the calculation is greatly reduced, so as to achieve a balance between speed and precision. However, the speed of this technology still cannot keep up with the needs of the current production line.

[0005] In addition, Taiwan, China announced the patent No. 371745 "Bottle mouth thread inspection system and its operation method", which converts the image into a black and white image, and then compares the area of ​​the white image in a specific area to determine whether there is a defect, but it is the total area When different defects are mixed, the white image area may still meet the specification. In order to increase the accuracy, the area of ​​a specific area must be reduced. production line requirements

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