Method and device for detecting quality of cigarette filter stick end face shape

Abstract

The invention discloses a method and device for detecting the quality of cigarette filter stick end face shapes. At the tail end of the filter stick production, two high-speed cameras on which high-precision calibration is carried out in advance are used for sequentially imaging the end faces of filter sticks in turn, and the images are analyzed and measured through a computer and the software of the computer; the concentricity of the center of filter stick cavity patterns and the center of the outer circles of the filter sticks, the similarity of the filter stick cavity patterns and a standard pattern, the circular degree of the outer circles of the filter sticks and broken filaments and notches of the filter stick cavity patterns and the outer circles of the filter sticks are measured; whether the filter sticks are qualified or not is judged according to the measurement result and the detection standard; the inferior-quality filter sticks are removed on line. The method and device for detecting the quality of the cigarette filter stick end face shapes have the advantages that the degree of automation is high; on-line detection is carried out in a real-time and high-speed mode, and the inferior-quality filter sticks are removed on line; the precision is high, and the repeated measuring precision reaches to 0.01mm; no damage or stain is caused to the filter sticks due to non-contact; all measuring data of parameters of the cigarette filter stick end face shapes are obtained, and the data can be rechecked; the method and the device are also suitable for detecting the appearance shapes of other filter stick end faces and the appearances of the end face of cigarettes.

Description

technical field [0001] The invention relates to the field of inspection of the appearance quality of the end surface of cigarette filter rods and machine vision measurement, specifically in the production link of cigarette filter rods, at the end of the production, an optical-mechanical-electrical integration device is adopted, and a non-contact measurement method of machine vision is adopted for online real-time detection Appearance parameters of filter rod end face, and reject defective filter rods online. Background technique [0002] The composite filter rod with visual function is a binary composite filter rod. On the one hand, it provides consumers with sensory enjoyment (vision, taste) enjoyment, and at the same time provides consumers with low-tar and low-hazard safety guarantee. It can be expressed in a variety of forms, such as a filter section with a visual novelty at the inlet lip, such as a cylindrical empty tube, a cavity with a pattern and text, a groove, a fr...

AI Technical Summary

Problems solved by technology

But there is no method or equipment for visual inspection of the end face

[0008] Manual screening mainly relies on naked eye observation, which has disadvantages such as unclear standards, easy misjudgment, low efficiency, high labor intensity, and easy to produce secondary pollution and damage

However, the existing automated detection methods are difficult to detect the filter rod cavity pattern, and the traditional contact measurement method is difficult to achieve online high-speed detection

Images