Packing defect detecting device and detecting method for boxed cigarettes

Abstract

The invention discloses a packing defect detecting device and a packing defect detecting method for boxed cigarettes. The device comprises two photoelectric switches (3) and a gate-type coil (1), wherein the two photoelectric switches (3) are arranged on a conveyor belt (2) for conveying the boxed cigarettes and are respectively used as a detector starting switch and a conveyor belt speed sensing device, and the gate-type coil (1) is arranged on the conveyor belt, positioned in back of the photoelectric switches and used as an inductance-capacitance-resistance (LCR) series resonance circuit inductor (L); the inductor (L) is connected in series with a capacitor (C) and a resistor (R) to form an LCR resonance circuit, the inductor is used as a detector, and the voltage drop of the resistor is detected and linearly amplified to form a signal pickup circuit (4); the signal pickup circuit is electrically connected with a signal processing system (5); and the signal processing system is electrically connected with a conveyor belt switch (6). According to the device and the method, advantages of various detection technologies are integrated, so that accuracy and applicability of packing defect detection of finished cigarette boxes.

Description

technical field [0001] The invention belongs to the technical field of non-destructive detection of cigarettes, and is mainly used for detecting, in a non-destructive state, whether a case of cigarettes on a conveyor belt is missing a strip, missing a package, damp, severely squeezed and deformed, and whether there are missing or multiple layers of metal wrapping paper. It can also be used to detect whether there is a shortage of sticks in a cigarette. Background technique [0002] Existing carton-package defect detection technologies mainly include the following two types, one is to detect by weighing, and the other is to detect by imaging technology such as X-ray perspective technology. Weighing methods are generally divided into electronic weighing and nuclear weighing. Although they have high weight accuracy when weighing objects, the weight of finished cigarettes is easily affected by fluctuations in the weight of raw materials and auxiliary materials. For example, as ...

AI Technical Summary

Problems solved by technology

However, due to the inability to perform refined data processing, two coils need to be used at the same time during detection, the detection structure is complex, the sensitivity is not high, and it is susceptible to interference and false alarms. Therefore, even if it is applied to the nondestructive testing of cigarettes, there are still question

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