A method for quality control of cigarette laser coding

Abstract

The invention provides a method for controlling the quality of cigarette laser coding. The method is: real-time detection of whether the communication between the coding machine and the repeater in the laser coding system is normal, whether the laser output signal is normal, the deflection signal of the laser galvanometer, etc. Whether it is normal or not is comprehensively judged. Once there is a missing coding fault, stop the laser coding system immediately and deal with it. At the same time, optimize the problem that the laser is coding when the conveyor line is shut down, and display, store, and analyze the fault through the man-machine interface. In order to ensure the quality of laser marking and prevent uncoded cigarettes from entering the distribution process or entering the market for sale. The invention makes up for the drawbacks of the existing laser marking open-loop mode, increases the system redundancy processing mechanism, and improves the reliability of the laser marking system.

Description

technical field [0001] The invention relates to the technical field of cigarette laser coding, in particular to a method for controlling the quality of cigarette laser coding. Background technique [0002] The laser coder is one of the core terminal equipment for the "No. 1 Project" of the tobacco industry to code to the bar. In the cigarette sorting and coding process of commercial companies, it is the system equipment to realize the bar coding. The laser identification code of cigarettes is an important basis for the authenticity of tobacco and whether tobacco is a monopoly product in the region. [0003] From the perspective of the functional design of the coding to bar system, the laser coding machine may have the following shortcomings: [0004] (1) It only requires software communication and online alarm with Chinasoft Coding Control System to complete the communication of coding data and carry out the work of coding cigarettes; the laser coding machine only requires ...

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Problems solved by technology

[0005] (2) The laser coding machine does not have an online alarm function for misoperation or equipment failure. Once the equipment is in operation, the laser power supply is turned off by worker misoperation, the coding industrial computer is faulty, the coding control system is faulty, or the laser itself is faulty. It will cause the situation of missing coding, and some sorting and coding positions are not equipped with special staff, and the fault of missing coding cannot be discovered in time

[0006] (3) In the actual operation process, due to the frequent start and stop of the conveyor belt, there are problems such as incomplete marking of cigarettes, accumulation of codes, and failure to mark the correct position of cigarettes, which has caused certain problems to the inspection management and monopoly work of the cigarette market. degree of influence

[0007] 1) After the cigarette sorting and packaging were completed, the workers found that the codes were missed and codes were piled up, so they had to rework and re-sort, code and repackage, which consumed a lot of manpower, material resources and time, and not only reduced the quality of the sorting process. Efficiency, also adds extra cost to cigarette sorting work;

[0008] 2) The unmarked or stacked cigarettes were not discovered by the workers, and the unmarked cigarettes were returned or passively flowed into the market during the distribution process

[0017] 2, 1 can only judge whether the laser emits light, or whether the laser marks the physical changes on the surface of the cigarette; but the final effect of the laser marking cannot be judged, such as whether the position of the cigarette marking is correct, etc. judge;

[0018] 2.2 If the thermocouple induction method is used, the thermal radiation detection of laser energy is determined according to the principle of thermocouple action. The thermocouple needs to process and analyze the process from induction to conversion into analog signal, which takes a long time and the detection accuracy cannot be guaranteed.

[0019] The principle of using thermal radiation to detect is determined: it only analyzes the appearance from the end of the system's execution output, and confirms whether the laser marking system is normal from the side of a technical characteristic, but it cannot systematically and root-cause the laser marking system. Carry out comprehensive analysis and judgment, there is a relatively one-sidedness

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