Method and device for detecting wall of cylindrical transparent bottle

Abstract

The invention discloses a method and a device for detecting the wall of a cylindrical transparent bottle. The method comprises image acquisition and image processing. A light source is arranged on one side of the bottle for back lighting, a set of optical acquisition systems are established on the other side of the bottle, the multi-angle one-time imaging of the bottle wall is realized after the multi-stage reflection of reflecting mirrors, a camera takes images through the reflecting mirrors, one optical acquisition system is arranged respectively for the image acquisition of the bottle wall at an entrance and the image acquisition of the bottle wall at an exit, and the bottle is turned for 90 degrees between the optical acquisition system at the entrance and the optical acquisition system at the exit. The invention has the advantages that the demand of high-speed online detection is satisfied, the method substitutes for the traditional manual detection method, the detection standard is more stable and reliable, the structure is compact and the detection efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of automatic detection of production lines, in particular to a detection device for cylindrical transparent bottle walls, which is suitable for on-line inspection of the quality, appearance and cleanliness of various transparent or translucent empty bottles on a high-speed automatic packaging production line. detection. Background technique [0002] At present, beer and beverage production enterprises pay more and more attention to the quality of products. However, the cleanliness of the bottles in the beer and beverage production line is far from the goal that people expect, especially in the current beer industry that repeatedly washes and reuses beer bottles. The recycled bottles are of various shapes and varieties, so after washing in the bottle washing machine and before filling, it is necessary to detect and sort out unqualified bottles. Whether the bottle body and wall are damaged, whether there are ...

AI Technical Summary

Problems solved by technology

This kind of artificial detection standard is fuzzy, affected by human factors to a considerable extent, cannot maintain a constant standard, and the detection accuracy is low and the speed is slow

With the development of modern high-speed filling lines, the disadvantages of the human eye in the detection process are more prominent, such as: due to long-term repetitive work, the eyes are prone to fatigue and errors will occur after long-term work. Even if these gaps are avoided, a very It is impossible for experienced inspection staff to surpass a visual inspection equipment with ordinary performance

If a cylindrical bottle (for example: a beer bottle with a height of 290mm and a diameter of 75mm) is directly photographed, in order to collect all the information on the height and width clearly, there needs to be an appropriate interval between the bottle and the camera installed The space requirements are relatively large, so it is difficult to meet the needs of high-speed online detection

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