Completed product packaging box short piece detecting apparatus and detecting method

Abstract

The invention discloses a detection device used for detecting short parts in finished packages, which is installed on a conveyor for the finished packages, including at least one detection module, each of which consists of at least one X-ray light source and at least one X-ray detector; at least one position detector that is arranged at sides of a belt of the conveyor and used for monitoring enter / leave testing area and outputting signals to a data acquisition and control system; the data acquisition and control system is connected with connecting X-ray detectors and the position detectors to receive and process data from connecting X-ray detectors and the position detectors as well as provide control signals. The device is characterized by being nondestructive and speedy detection and the invention can check whether finished packages are short of parts and remove unqualified packages on line.

Description

technical field [0001] The invention relates to radiation on-line detection technology, in particular to the on-line detection of missing parts of finished product packaging boxes (such as missing bars in cigarette boxes and missing packages of cigarette sticks). Background technique [0002] Chinese application number 02100306.8, titled "on-line detection device for lack of regular packaged items" and Chinese application number 200410073695.2, titled "on-line detection device for missing packs of cigarettes and its detection method", both of which use gamma-ray sources and gamma-rays Detectors to detect missing parts in finished cartons and missing packs of cigarettes. The existing detection device still has the following defects due to the use of gamma rays for detection: [0003] (1) The gamma rays emitted by the gamma ray detection device are produced by the decay of radioactive nuclei, and the nuclei decay according to their own laws. Regardless of whether the device i...

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Problems solved by technology

[0003] (1) The gamma rays emitted by the gamma ray detection device are produced by the decay of radioactive nuclei, and the nuclei decay according to their own laws. Regardless of whether the device is working or not, gamma rays are continuously generated. Once the management is not good, the radioactive source loss or loss of control may result in serious liability accidents or personal injury

[0004] (2) The energy of gamma rays is relatively high, and it is not easy to protect (shield);

[0005] (3) The energy of gamma rays is higher than that of rays with lower energy. The gamma rays absorbed by the same substance with the same weight are less than those with lower energy. The detection accuracy is lower

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