Cigarette decoration visual imaging acquisition system

Abstract

The invention relates to the field of cigarette decoration quality control, in particular to a cigarette decoration visual imaging acquisition system. The automatic collecting device comprises an automatic collecting rack, a moving table, a driving mechanism, a first collecting module, a second collecting module and a third collecting module are arranged on the automatic collecting rack, the moving table can move in the first direction and the second direction under driving of the driving mechanism, and cigarette packaging boxes are placed and fixed to the moving table. The automatic control technology is utilized to enable the moving table to drive the cigarette packaging box to move, meanwhile, color features, printing features and three-dimensional shape features of the cigarette packaging box are comprehensively collected through the first collecting module, the second collecting module and the third collecting module, and whether products are qualified or not is judged through analysis and comparison of a computer system. The automation degree and precision of detection are effectively improved, the detection efficiency on a production line is greatly improved, the labor cost is reduced, and the intelligent development of cigarette decoration quality detection is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cigarette decoration quality control, in particular to a cigarette decoration visual imaging acquisition system. BACKGROUND

[0002] In the tobacco industry, the importance of cigarette decoration appearance cannot be ignored. As the outer packaging of cigarette products, it not only serves as a protective layer for the internal tobacco, but also as a visual medium to convey brand culture and attract consumers. The design and quality of cigarette decoration directly affect the performance of the product in the market, determining whether it can stand out in the competition. It is the core carrier of the brand's external image, affecting the first impression and purchase choice of consumers, and is also one of the key factors to enhance brand loyalty.

[0003] Currently, the quality detection of cigarette decoration appearance still mostly relies on traditional manual detection methods. Specifically, the operator checks by eye to find the printing defects of the packaging box, such as pattern missing or misplacement, unclear pattern, inaccurate two-dimensional code, etc. In addition, the indentation and flatness of the packaging material are also evaluated to check whether there are unevenness or other quality problems. For possible printing color difference, the operator needs to compare under specific lighting conditions with the naked eye. The manual detection method not only consumes time, but also is easily affected by subjective factors, different operators may have different judgments on the same problem, making it difficult to guarantee the stability and reliability of the detection results, at the same time, the efficiency of manual detection is low, which is difficult to meet the needs of large-scale production.

[0004] The information disclosed in the background section of this application is only intended to deepen the understanding of the general background of the application and should not be considered as recognition or implicit suggestion that this information constitutes prior art known to those skilled in the art. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a cigarette decoration visual imaging acquisition system to solve the problems of low detection efficiency and poor detection precision of cigarette decoration.

[0006] The cigarette decoration visual imaging acquisition system of the present application adopts the following technical solution: an automatic acquisition rack is provided, a moving table, a driving mechanism, a first acquisition module, a second acquisition module and a third acquisition module are arranged on the automatic acquisition rack;

[0007] The moving table can move along the first direction and the second direction under the drive of the driving mechanism, the first direction and the second direction are perpendicular, and the cigarette packaging box is placed and fixed on the moving table;

[0008] The first acquisition module, the second acquisition module and the third acquisition module are sequentially and spacedly arranged along the first direction, the first acquisition module is configured to be capable of acquiring color features of the cigarette packaging box, the second acquisition module is configured to be capable of acquiring printing features of the cigarette packaging box, and the third acquisition module is configured to be capable of acquiring three-dimensional topographic features of the cigarette packaging box.

[0009] Optionally, the mobile platform is configured to be capable of adsorbing the cigarette packaging box.

[0010] Optionally, the driving mechanism comprises a Y-axis linear motor and an X-axis linear motor, the X-axis linear motor is vertically arranged on the Y-axis linear motor, the mobile platform is arranged on the X-axis linear motor, the X-axis linear motor drives the mobile platform to move along the second direction, and the Y-axis linear motor drives the X-axis linear motor and the mobile platform to move along the first direction.

[0011] Optionally, the first acquisition module comprises a color camera and a first light source, the color camera is used for image acquisition of the cigarette packaging box, and the first light source is used for supplementing shooting light of the color camera.

[0012] Optionally, the second acquisition module comprises a 2D camera and a second light source, the 2D camera is used for image acquisition of the cigarette packaging box, and the second light source is used for supplementing shooting light of the 2D camera.

[0013] Optionally, the second light source is a strip light source, two second light sources are arranged on both sides of the 2D camera along the second direction and extend along the first direction.

[0014] Optionally, the angle of the second light source is adjustable.

[0015] Optionally, the third acquisition module comprises a line-scan camera, and the line-scan camera is used for three-dimensional scanning of the cigarette packaging box.

[0016] Optionally, the third acquisition module further comprises a fine adjustment platform, the fine adjustment platform is arranged on the automated acquisition rack, the line-scan camera is installed on the fine adjustment platform, and the fine adjustment platform is configured to be capable of adjusting the height of the line-scan camera.

[0017] Optionally, the cigarette decoration visual imaging acquisition system adopts PLC control.

[0018] The cigarette decoration visual imaging acquisition system has the beneficial effects that: the cigarette decoration visual imaging acquisition system utilizes automatic control technology to drive the cigarette packaging box to move by the moving table, simultaneously, the color features, the printing features and the three-dimensional topographic features of the cigarette packaging box are collected by the first acquisition module, the second acquisition module and the third acquisition module, and whether the product is qualified is determined by the analysis and comparison of the computer system, the automation degree and the precision of detection are effectively improved, the detection efficiency on the production line is greatly improved, the labor cost is reduced, the tobacco enterprise is helped to optimize the production process, improve the product quality, and further shorten the product listing cycle, enhance the market competitiveness, and promote the intelligent development of the cigarette decoration quality detection. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Fig. 1 It is a schematic diagram of the overall mechanism of the cigarette decoration visual imaging acquisition system of the present application.

[0021] Fig. 2 It is a front view of the cigarette decoration visual imaging acquisition system of the present application.

[0022] Fig. 3 It is a side view of the cigarette decoration visual imaging acquisition system of the present application.

[0023] Fig. 4 It is a side view of the cigarette decoration visual imaging acquisition system of the present application.

[0024] In the drawings:

[0025] 1, automatic acquisition rack; 2, color camera; 3, first light source; 4, moving table; 5, 2D camera; 6, second light source; 7, line scanning camera; 8, fine adjustment platform; 9, X-axis linear motor; 10, mounting platform; 11, Y-axis linear motor. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] As Figs. 1 to 4As shown, the cigarette decoration visual imaging acquisition system provided by the embodiment of the present application is used for detecting the appearance of a cigarette packaging box, including but not limited to a single-pack cigarette packaging box and a whole-strip cigarette packaging box.

[0028] Specifically, the embodiment of the present application comprises an automatic acquisition rack 1, wherein the automatic acquisition rack 1 is provided with a moving table 4, a driving mechanism, a first acquisition module, a second acquisition module and a third acquisition module.

[0029] The moving table 4 can move along a first direction and a second direction under the driving of the driving mechanism, wherein the first direction and the second direction are perpendicular, and the cigarette packaging box is placed and fixed on the moving table 4.

[0030] The first acquisition module, the second acquisition module and the third acquisition module are sequentially and spacedly arranged along the first direction, wherein the first acquisition module is configured to acquire the color feature of the cigarette packaging box, so as to detect whether the cigarette packaging box has color difference, the position of the color difference and the size of the color difference, etc., the second acquisition module is configured to acquire the printing feature of the cigarette packaging box, so as to detect whether the cigarette packaging box has printing defects such as pattern loss or misplacement, insufficient gold stamping or glazing, inaccurate bar code, etc., and the third acquisition module is configured to acquire the three-dimensional topographic feature of the cigarette packaging box, so as to detect whether the flatness and the indentation position of the cigarette packaging box meet the requirements.

[0031] It should be noted that the moving table 4 has a suction function and can suck the cigarette packaging box, specifically, a plurality of micro-holes arranged in a dot matrix are formed on the moving table 4, a gas cavity communicating with the micro-holes is arranged in the moving table 4, and the gas cavity is connected with a gas pump.

[0032] In use, the cigarette packaging box is placed on the moving table 4 in a flat state (a state after printing and cutting are completed, but before folding and bonding) with the front face upward, the gas pump is controlled to exhaust the gas from the gas cavity, so as to realize the suction of the cigarette packaging box; then, the moving table 4 sequentially passes through the third acquisition module, the second acquisition module and the first acquisition module along the first direction, or sequentially passes through the first acquisition module, the second acquisition module and the third acquisition module, wherein the moving table 4 can move along the second direction during the acquisition process, so as to cooperate with each module to acquire and ensure the comprehensiveness of the acquisition, the acquired information is uploaded to a computer system for analysis and comparison, so as to determine whether the product is qualified; after the detection is completed, the gas cavity is inflated to restore the air pressure, so as to release the cigarette packaging box, the cigarette packaging box is taken down and stored according to the category; then, a new cigarette packaging box is installed, and a new round of detection is started; it should be noted that when a new round of detection is started, the moving table 4 can return to the original point along the original path, and then the detection is performed in the normal order again, or the detection can be performed in the reverse order during the returning process, and both the two methods are feasible.

[0033] The embodiment of the scheme utilizes automatic control technology to drive the cigarette packaging box to move with the mobile platform 4, and simultaneously collects the color features, printing features and three-dimensional topographic features of the cigarette packaging box through the first acquisition module, the second acquisition module and the third acquisition module, and judges whether the product is qualified through analysis and comparison of the computer system, effectively improving the automation degree and precision of detection, greatly improving the detection efficiency on the production line, reducing the labor cost, helping the tobacco enterprises to optimize the production process, improve the product quality, further shorten the product listing cycle, enhance the market competitiveness, and promote the intelligent development of cigarette decoration quality detection.

[0034] In a further embodiment, the driving mechanism includes a Y-axis linear motor 11 and an X-axis linear motor 9, the X-axis linear motor 9 is vertically arranged on the Y-axis linear motor 11, the mobile platform 4 is arranged on the X-axis linear motor 9, the X-axis linear motor 9 drives the mobile platform 4 to move along the second direction, and the Y-axis linear motor 11 drives the X-axis linear motor 9 and the mobile platform 4 to move along the first direction.

[0035] Further, the first acquisition module includes a color camera 2 and a first light source 3, the color camera 2 is used for image acquisition of the cigarette packaging box, and the first light source 3 is used for supplementing the shooting light of the color camera 2. Specifically, the first light source 3 is a dome light source in the shape of a bowl, a hole is formed in the center of the top, and the lens of the color camera 2 is placed in the first light source 3 through the hole. Such arrangement can facilitate the concentration of light and improve the shooting quality. It should be explained that the color camera 2 acquires color information through a special structure (such as prism light splitting or Bayer filter), which can realize high-precision color restoration. The color information collected by the color camera 2 is compared and analyzed with the design information, and ΔE (a standard measurement value for quantifying color difference) can be set to 1.0-2.0 to be qualified. In this way, it can be determined whether the color features of the cigarette packaging box are qualified.

[0036] Further, the second acquisition module includes a 2D camera 5 and a second light source 6, the 2D camera 5 is used for image acquisition of the cigarette packaging box, the 2D camera 5 can acquire two-dimensional planar images of the cigarette packaging box, and can be processed by relying on edge extraction, template matching and other algorithms, which is conducive to accurate judgment of printing defects, and the second light source 6 is used for supplementing the shooting light of the 2D camera 5. Two second light sources 6 are arranged on the left and right sides of the 2D camera 5 along the second direction, the second light source 6 is a strip light source and extends along the first direction to increase the illumination range, and the second light source 6 can rotate around an axis parallel to the first direction to realize angle adjustment and meet different lighting needs; a shell is arranged outside the lens of the 2D camera 5, the shell can optimize the light, block stray light and improve the imaging quality.

[0037] Further, the third acquisition module comprises a line scan camera 7, which is used for three-dimensional scanning of the cigarette packaging box to obtain the three-dimensional topographic features of the cigarette packaging box, so as to facilitate evaluation of the indentation and flatness of the cigarette packaging box and check whether the cigarette packaging box has unevenness or other quality problems. It should be explained that the line scan camera 7 can scan through relative movement of the object and the camera, and during scanning, the moving table 4 can drive the cigarette packaging box to move in the first direction without stopping.

[0038] The third acquisition module further comprises a fine adjustment platform 8, which is arranged on the automatic acquisition rack 1, and the line scan camera 7 is installed on the fine adjustment platform 8. The fine adjustment platform 8 is configured to adjust the height of the line scan camera 7 so that the height difference between the line scan camera 7 and the moving table 4 is within a working interval, thereby ensuring normal operation of the line scan camera 7.

[0039] Further, the automatic acquisition rack 1 in the present application adopts an overall structure design form of two boxes, including a lower rack and an upper rack. The lower rack is a welded frame, has an installation platform 10 at the top, forms an accommodating cavity inside, is provided with cabinet doors around, and an electric control device is placed in the accommodating cavity. The upper rack is an aluminum alloy frame, is surrounded by an acrylic plate around, has a total light source at the top, and the total light source can adopt a three-color lamp to meet different lighting needs. The first acquisition module, the second acquisition module and the third acquisition module are all installed on the upper rack.

[0040] The installation platform 10 of the lower rack serves as a bearing surface and is used for installing an X-axis linear motor 9, a Y-axis linear motor 11 and part of the support columns of the upper rack and the like. The installation platform 10 can adopt a metal material or a marble material. Preferably, the installation platform 10 adopts a marble material with a thickness of 15 cm. The marble material installation platform 10 can not only increase the weight of the entire machine to ensure that the machine does not shake when the X-axis linear motor 9, the Y-axis linear motor 11 and other power equipment are running, but also has a dense structure, uniform texture, extremely low thermal expansion coefficient, no internal stress, almost no deformation after long-term use, high surface hardness, strong wear resistance, high flatness, and can improve the precision of two-dimensional image and three-dimensional point cloud data acquisition.

[0041] Further, the lower rack is provided with traveling wheels at the bottom to facilitate movement of the equipment.

[0042] In further implementation, the cigarette decoration visual imaging acquisition system of the present application adopts PLC control, and through the combination of optical imaging, three-dimensional scanning technology and PLC control technology, the automation degree and precision of the cigarette decoration appearance quality visual imaging system detection can be effectively improved. That is, the color camera 2, the 2D camera 5, the line scanning camera 7, the moving table 4 and the linear motor are combined together, and the whole is controlled by PLC, the linear motor drives the moving table 4 to run, the running speed, distance and other parameters can be adjusted, after running to the specified position, the corresponding camera starts to work, the visual imaging acquisition of the cigarette decoration is carried out, after the acquisition is completed, the linear motor drives the moving table 4 to reach the next acquisition position, the above operation is repeated until the three cameras complete the acquisition operation, the acquired data is automatically stored to the specified position of the computer system and is analyzed and compared to judge whether the product is qualified. The cigarette decoration visual imaging acquisition system of the present application further comprises a visual interactive panel, which is convenient for operating and observing the equipment.

[0043] Hereinafter, the use principle and working process of the present application will be described by taking the moving table 4 starting to acquire from the third acquisition module as an example during detection:

[0044] Firstly, the to-be-acquired cigarette packaging box is placed on the moving table 4 by artificial (or by using a mechanical hand), and is operated and selected through the visual interactive panel to determine the type of the cigarette packaging box and the type of the data to be acquired (during acquisition, the three acquisition modules are acquired, or only the data acquisition of a certain acquisition device is carried out);

[0045] Then, the equipment starts to work according to the predetermined program, the PLC controls the moving table 4 to start the adsorption function, the moving table 4 firmly adsorbs the cigarette packaging box, and the Y-axis linear motor 11 drives the moving table 4 and the cigarette packaging box placed thereon to move along the first direction;

[0046] After the moving table 4 reaches below the line scanning camera 7, the PLC sends a start signal, the line scanning camera 7 starts to work, and at the same time, the Y-axis linear motor 11 drives the moving table 4 to slowly move, so that the line scanning camera 7 slowly scans the area to be acquired, then the PLC sends an end signal, the line scanning camera 7 is closed, the Y-axis linear motor 11 drives the moving table 4 to the next acquisition module, and the three-dimensional scanning data acquired by the line scanning camera 7 is transmitted to the computer through the network cable;

[0047] When the moving table 4 reaches the 2D camera 5, the moving table 4 is paused, the PLC sends a start signal, the two second light sources 6 are turned on, the 2D camera 5 starts to work and takes a photo of the cigarette packaging box, acquires two-dimensional data and transmits the data to the computer, after the acquisition is completed, the PLC sends an end signal, the second light source 6 and the 2D camera 5 are turned off, and the Y-axis linear motor 11 drives the moving table 4 to continue to the next acquisition module;

[0048] When the mobile station 4 reaches the color camera 2, the PLC sends a start signal, the first light source 3 is turned on, and the color camera 2 starts photographing. Since the color camera 2 needs to accurately collect the color of each part, it uses local fine photographing, i.e., a small part of the cigarette packaging box is photographed each time. After each photographing, the X-axis linear motor 9 and the Y-axis linear motor 11 cooperate to drive the mobile station 4 to translate. After a certain distance of translation, the color camera 2 continues photographing until the collected sample data reaches the program setting requirement. The PLC sends an end signal, and the first light source 3 and the color camera 2 are turned off.

[0049] Finally, the Y-axis linear motor 11 drives the mobile station 4 to return to the starting point, and the cigarette packaging box placed on the mobile station 4 is manually (or by using a mechanical hand) taken out, a new cigarette packaging box is placed, and the above steps are repeated. The data stored in the computer can be manually exported for subsequent analysis and comparison. Alternatively, the mobile station 4 takes out the detected cigarette packaging box at the end of a single trip and places a new cigarette packaging box to be detected in reverse order (in the order of the first collection module, the second collection module, and the third collection module). It can be understood that at the second collection module and the first collection module, the X-axis linear motor 9 can also cooperate with the Y-axis linear motor 11 to realize alignment and accurate collection. Meanwhile, the X-axis linear motor 9 and the Y-axis linear motor 11 cooperate to realize accurate arrival of the mobile station 4 at the loading and unloading position, i.e., the X-axis linear motor 9 and the Y-axis linear motor 11 cooperate to control the accurate movement of the mobile station 4, realizing automatic collection.

[0050] A mechanical hand can be arranged on the automatic collection rack 1 to cooperate with the taking and placing of the cigarette packaging box. The automatic collection rack 1 is provided with classification points at one end or both ends in the first direction, and the detected cigarette packaging box can be classified and stored. The acrylic glass plate arranged around the rack is provided with openings at the corresponding positions, facilitating loading and unloading.

[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Cigarette decoration visual imaging acquisition system, characterized by: It includes an automated collection stand, on which a moving platform, a driving mechanism, a first collection module, a second collection module and a third collection module are provided; The movable platform is driven by a driving mechanism and can move along a first direction and a second direction, the first direction and the second direction being perpendicular to each other, and the cigarette package is placed and fixed on the movable platform; The first acquisition module, the second acquisition module and the third acquisition module are arranged in sequence along the first direction. The first acquisition module is configured to collect the color characteristics of the cigarette packaging box, the second acquisition module is configured to collect the printing characteristics of the cigarette packaging box, and the third acquisition module is configured to collect the three-dimensional morphology characteristics of the cigarette packaging box.

2. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The mobile station is configured to be able to absorb the cigarette packaging box.

3. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The driving mechanism includes a Y-axis linear motor and an X-axis linear motor. The X-axis linear motor is arranged perpendicularly to the Y-axis linear motor, and the movable platform is arranged on the X-axis linear motor. The X-axis linear motor drives the movable platform to move along the second direction, and the Y-axis linear motor drives the X-axis linear motor and the movable platform to move along the first direction.

4. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The first acquisition module includes a color camera and a first light source. The color camera is used to acquire images of the cigarette packaging box, and the first light source is used to supplement the shooting illumination of the color camera.

5. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The second acquisition module includes a 2D camera and a second light source. The 2D camera is used to acquire images of the cigarette packaging box, and the second light source is used to supplement the shooting illumination of the 2D camera.

6. The cigarette decoration visual imaging acquisition system according to claim 5, characterized in that: The second light source is a bar-shaped light source. Two second light sources are provided. The two second light sources are arranged on both sides of the 2D camera along the second direction and extend along the first direction.

7. The cigarette decoration visual imaging acquisition system according to claim 6, characterized in that: The angle of the second light source can be adjusted.

8. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The third acquisition module includes a line scan camera, which is used to perform three-dimensional scanning on the cigarette packaging box.

9. The cigarette decoration visual imaging acquisition system according to claim 8, characterized in that: The third acquisition module also includes a fine-tuning platform, which is arranged on the automated acquisition stand, and the line scan camera is installed on the fine-tuning platform. The fine-tuning platform is configured to be able to adjust the height of the line scan camera.

10. The cigarette decoration visual imaging acquisition system according to claim 1, characterized in that: The cigarette decoration visual imaging acquisition system is controlled by PLC.

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