Method for omnibearing detection of defect of PET bottle cap antitheft ring

Abstract

The invention discloses a method for omnibearing detection of the defect of a PET bottle cap antitheft ring. The method comprises a PET bottle to be detected goes through the front light detection station I and the front light detection station II of a first detection cabinet and the back light detection station I and the back light detection station II of a second detection cabinet, a bottle cap top positioning, equalization processing, defect feature extraction and defect judging technology is adopted to realize prepositioned light image processing, an adaption ring positioning, defect feature extraction and defect judging technology is adopted to realize back light image processing, and non-blind area detection of defects in different positions of the bottle cap antitheft ring is carried out. The method has the advantages of low cost and high detection precision.

Description

technical field [0001] The invention belongs to the technical field of industrial automatic detection, and in particular relates to a detection method for the defect of an all-round anti-theft ring of a PET bottle cap. Background technique [0002] At present, food safety issues are getting more and more attention from the government and the people. In the existing production process of beer, beverages and pharmaceuticals, the filling containers are required to meet the corresponding quality standards, and strict inspections must be carried out in every link of production. Once an unqualified bottle mouth appears, it will not only affect the production The reputation of the manufacturer, and due to the close contact between the bottle mouth and the consumer, may cause the user to be injured, resulting in the loss of the vital interests of the consumer. Among them, whether the sealing is intact is one of the very important indicators in PET bottle packaging, which not only d...

AI Technical Summary

Problems solved by technology

The defect of the anti-theft ring is mainly caused by the inappropriate torque or filling pressure during the capping process, and the defects mainly include disconnection of the bridging point, breakage of the anti-theft ring, loss of the anti-theft ring, and inward rolling of the anti-theft ring. The difficulty of detection lies in the uncertain location and form of defect occurrence

The current method of detecting anti-theft ring defects based on front light requires many stations or complex mirror imaging to achieve all-round detection. The structure is complex and the stability is poor, which greatly increases the complexity and cost of hardware. In the detection system There is a problem of blind spots in the viewing angle, which affects the detection accuracy

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