Cigarette laser marking system and method based on image processing

Abstract

The invention relates to a cigarette laser marking method and system based on image processing. The cigarette laser marking method comprises the following steps: detecting a cigarette image on a conveyor belt to obtain a shape, a position and a movement speed of a cigarette; judging proper marking time and combining corresponding marking content; controlling a plurality of laser marking heads to mark appointed positions of the cigarette at the same time, so as to completely solve the problems of incomplete marking and missed marking. By adopting a multi-laser marking parallel work manner, a marking speed is effectively improved and the problem of the working stability is effectively solved through a redundancy method. A control system provides a complete interface so that data butting is very easy to realize. A ventilation channel design is adopted, and wind is blown from the lower side and is sucked from the upper side, so that the treatment problem of harmful gas generated by laser marking is completely solved.

Description

technical field [0001] The invention relates to the field of tobacco anti-counterfeiting, in particular to a cigarette laser marking system and method based on image processing. Background technique [0002] At present, domestic cigarettes adopt a monopoly system. Tobacco retail stores (hereinafter referred to as "stores") need to apply for tobacco sales qualifications from the local Tobacco Monopoly Bureau. The Tobacco Monopoly Bureau will deliver the ordered tobacco products to the store before the store can sell tobacco. [0003] In recent years, in order to standardize the market, prevent counterfeit cigarettes and facilitate regional sales management, the tobacco industry has basically realized laser marking on cigarettes, that is, using laser marking machines to directly mark on cigarettes directly through the cellophane of cigarettes It can be used to mark the cellophane without damaging the surface of the cigarette, and at the same time meet the requirements of the ...

AI Technical Summary

Problems solved by technology

[0006] 1. Since the laser marking machine starts marking after receiving the feedback information from the detection probe, the control system can only obtain two working modes of marking and non-marking after receiving the signal from the detection probe, and cannot control when to mark , where to mark, and it is impossible to deal with abnormal-shaped cigarettes and skewed cigarettes. If the above-mentioned situation occurs on the cigarettes on the conveyor belt, there will be incomplete marking, missed marking, etc.

Especially for special-shaped cigarettes, it is very easy to miss a strike, so after one cigarette is missed, every subsequent cigarette may have a miss.

At the same time, because the position and shape information of the cigarettes cannot be obtained, the fixed marking format and marking position make the code position on the cigarettes each time different, which not only affects the appearance of the cigarette outer packaging, but also easily causes problems for customers in operation and management. loose impression

[0007] 2. The current tobacco laser marking system cannot be physically separated from the transmission device, that is, the speed of the transmission device in the marking system, the position of the detection probe, and the position of the laser marking head are relatively fixed. If the speed changes, the marking system will not work properly

Due to the seasonal changes in cigarette sales, if the delivery system needs to be speeded up during the sales peak, the tobacco marking system cannot work normally, which has become a difficult problem for the tobacco industry.

[0008] 3. The existing tobacco laser marking system generally uses a single laser head to work, and the redundancy is poor. Once a failure occurs, the entire system will not work normally, delaying normal sorting and delivery tasks

[0009] 4. The problem of dealing with harmful gases generated by laser marking has not been well resolved, which is likely to cause air pollution, damage to the laser head, and endanger the health of staff, etc.

[0010] 5. The speed improvement of the existing system is limited by the marking speed of the laser marking machine, which cannot meet the marking requirements of high-speed cigarette transmission

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