Cigarette packaging presswork detection device based on machine vision

Abstract

The utility model discloses a cigarette package presswork detection device based on machine vision, which comprises a case, a sample placing platform is arranged on the top surface of the case, and an image acquisition unit is further arranged on the case. The image acquisition unit comprises a first image acquisition assembly located above the sample placing platform, a second image acquisition assembly located behind the sample placing platform and a third image acquisition assembly located on the left side of the sample placing platform, and a machine cover used for covering the image acquisition unit is arranged on the periphery of the top end of the machine box; and the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are all connected with the control unit. According to the utility model, the packaging details of the cigarette packaging presswork can be automatically identified and judged, the detection efficiency and the detection precision are improved, and the high-quality standard of the cigarette packaging presswork is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cigarette packaging printed matter detection technical field, concretely relates to a cigarette packaging printed matter detection device based on machine vision. BACKGROUND

[0002] Current cigarette packaging quality detection mainly adopts traditional manual means, and the detection process follows the established technical standard, and the professional detection tool is used to check the key design elements such as pattern, mark, character, warning on cigarette packaging, and also to identify common printing defects such as color difference, dirt, paste, crease and printing position deviation; The detection method is not only time-consuming and lengthy, but also requires high professional skills and experience of the detection personnel, and can only be qualified after systematic training, and more importantly, manual detection has unavoidable fluctuation, and the accuracy is difficult to maintain for a long time, which is difficult to meet the needs of modern tobacco industry for efficient and accurate quality control. UTILITY MODEL CONTENT

[0003] In view of the defects of the prior art, the utility model provides a cigarette packaging printed matter detection device based on machine vision, which can realize automatic identification and judgment of cigarette packaging printed matter packaging details, improve detection efficiency and detection accuracy, and ensure high quality standard of cigarette packaging printed matter.

[0004] The utility model solves the technical scheme that the technical scheme adopted by the utility model is:

[0005] A cigarette packaging printed matter detection device based on machine vision, including the machine case, the top surface of the machine case is equipped with a sample placing platform, the machine case is also equipped with an image acquisition unit, the image acquisition unit includes a first image acquisition assembly above the sample placing platform, a second image acquisition assembly behind the sample placing platform and a third image acquisition assembly left of the sample placing platform, the top end of the machine case is equipped with a machine cover for covering the image acquisition unit, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are connected with a control unit, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are used for acquiring the image information of the cigarette packaging printed matter placed on the sample placing platform and sending to the control unit, the control unit is used for analyzing and judging the received image information, realizing the detection of the cigarette packaging printed matter.

[0006] Further, the top surface of the sample placing platform and the machine case is horizontally arranged.

[0007] Further, the first image acquisition assembly comprises a first light panel parallel to the sample placement platform, a plurality of first light holes are formed on the first light panel, a first light source and a first camera are arranged at each first light hole, the first camera is bidirectionally connected with the control unit, the signal output end of the control unit is connected with the first light source, and the control unit is configured to control the on-off of the first light source and the first camera; the light emitted by the first light source is used for irradiating the top surface of the cigarette packaging print through the corresponding first light hole, each first camera is configured to acquire image information of the top surface of the cigarette packaging print and send the image information to the control unit, and the control unit is configured to comprehensively analyze and judge the image information of the top surface of the cigarette packaging print sent by each first camera, so as to realize detection of the top surface of the cigarette packaging print.

[0008] Further, the cabinet is provided with a lifting unit, the top end of the lifting unit is fixed with a sample placement platform, a through channel corresponding in position, shape and size to the sample placement platform is formed on the top plate of the cabinet, the signal output end of the control unit is connected with the lifting unit, and the sample placement platform is driven to vertically lift and pass through the through channel by the lifting unit, so that the vertical distance between the top surface of the cigarette packaging print placed on the sample placement platform and the first camera satisfies the focal length of the first camera.

[0009] Further, the second image acquisition assembly comprises a second light panel vertically arranged along the left-right direction, a plurality of second light holes are formed on the second light panel, a second light source and a second camera are arranged at each second light hole, the second camera is bidirectionally connected with the control unit, the signal output end of the control unit is connected with the second light source, and the control unit is configured to control the on-off of the second light source and the second camera; the light emitted by the second light source is used for irradiating the rear side of the cigarette packaging print through the corresponding second light hole, each second camera is configured to acquire image information of the rear side of the cigarette packaging print and send the image information to the control unit, and the control unit is configured to comprehensively analyze and judge the image information of the rear side of the cigarette packaging print sent by each second camera, so as to realize detection of the rear side of the cigarette packaging print.

[0010] Further, a rear limiting strip horizontally arranged along the left-right direction is fixed at the rear edge of the top surface of the sample placement platform, and the rear limiting strip is configured to limit the rear side of the cigarette packaging print, so that the rear side of the cigarette packaging print is parallel to the second light panel.

[0011] Further, the third image acquisition assembly comprises a third light-emitting panel vertically arranged along the front-rear direction, a plurality of third light-emitting holes are formed in the third light-emitting panel, a third light source and a third camera are arranged at each third light-emitting hole, the third camera is bidirectionally connected with the control unit, the signal output end of the control unit is connected with the third light source, and the control unit is used for controlling the on-off of the third light source and the third camera; the light emitted by the third light source is used for irradiating the left side of the cigarette package printing through the corresponding third light-emitting hole, each third camera is used for collecting the image information of the left side of the cigarette package printing and sending the image information to the control unit, the control unit is used for comprehensively analyzing and judging the image information of the left side of the cigarette package printing sent by each third camera, and the detection of the left side of the cigarette package printing is realized.

[0012] Further, a left limiting strip horizontally arranged along the front-rear direction is fixed at the left edge of the top surface of the sample placing platform, the left limiting strip is used for limiting the left side of the cigarette package printing, and the left side of the cigarette package printing is parallel to the third light-emitting panel.

[0013] Further, the signal output end of the control unit is connected with the display unit, and the control unit is used for sending the detected information of the cigarette package printing to the display unit for display.

[0014] Further, the front side plate of the machine cover is provided with an inlet-outlet channel, and the inlet-outlet channel is provided with a sealing door; a safety light grid is arranged on one side of the inlet-outlet channel on the top surface of the machine box in the machine cover, and the safety light grid is connected with the signal input end of the control unit.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model discloses a cigarette packaging printed matter detection device based on machine vision, aims at the three -dimensional cigarette packaging printed matter, for example cigarette strip or cigarette box, first, the cigarette packaging printed matter is placed on the sample placement platform, the first image acquisition subassembly gathers the image information of cigarette packaging printed matter top and sends to the control unit, the second image acquisition subassembly gathers the image information of cigarette packaging printed matter rear side and sends to the control unit, the third image acquisition subassembly gathers the image information of cigarette packaging printed matter left side and sends to the control unit, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter top, realizes the detection to cigarette packaging printed matter top, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter rear side, realizes the detection to cigarette packaging printed matter rear side, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter left side, realizes the detection to cigarette packaging printed matter left side, then, the cigarette packaging printed matter is turned over 180 DEG to one direction, makes cigarette packaging printed matter rear side turn to front side, the first image acquisition subassembly gathers the image information of cigarette packaging printed matter bottom and sends to the control unit, the second image acquisition subassembly gathers the image information of cigarette packaging printed matter front side and sends to the control unit, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter bottom, realizes the detection to cigarette packaging printed matter bottom, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter front side, realizes the detection to cigarette packaging printed matter front side, after that, the cigarette packaging printed matter is turned over 180 DEG to another direction, makes cigarette packaging printed matter left side turn to right side, the third image acquisition subassembly gathers the image information of cigarette packaging printed matter right side and sends to the control unit, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter right side, realizes the detection to cigarette packaging printed matter right side, therefore, aiming at the three -dimensional cigarette packaging printed matter, this cigarette packaging printed matter detection device based on machine vision can realize the comprehensive detection to six surfaces of cigarette packaging printed matter. And aiming at the plane type cigarette packaging printed matter, for example, the cigarette packaging printed matter is placed on the sample placement platform, the first image acquisition subassembly gathers the image information of cigarette packaging printed matter top and sends to the control unit, and the control unit carries out the analysis judgment to the received image information of cigarette packaging printed matter top, realizes the detection to cigarette packaging printed matter top, therefore, aiming at the plane type cigarette packaging printed matter, this cigarette packaging printed matter detection device based on machine vision only needs to detect the top of cigarette packaging printed matter. In conclusion, the cigarette packaging printed matter detection device based on machine vision can realize the automatic identification and determination of the packaging details of the three -dimensional or plane type cigarette packaging printed matter, can improve the detection efficiency and detection precision, and ensure the high quality standard of cigarette packaging printed matter. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the external three-dimensional structure schematic view of the cigarette packaging printed matter detection device based on machine vision in the utility model;

[0018] Figure 2 It is the internal three-dimensional structure schematic view of the cigarette packaging printed matter detection device based on machine vision in the utility model;

[0019] Figure 3 It is Figure 2 The three-dimensional structure schematic view of another direction.

[0020] In the drawing, the reference signs are explained: 1, case, 101, through channel, 102, pulley, 2, sample placement platform, 3, machine cover, 301, blocking door, 401, first light panel, 402, first camera, 501, second light panel, 502, second camera, 601, third light panel, 602, third camera, 7, industrial host, 8, display, 9, safety grating. DETAILED DESCRIPTION

[0021] The specific embodiments of the utility model are further described in detail below in combination with the drawings. These embodiments are only used to illustrate the utility model, and not limit the utility model.

[0022] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] In addition, in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0025] AsFigures 1-3 As shown, a cigarette packaging print detection device based on machine vision comprises a machine box 1, a sample placing platform 2 is arranged at the top surface of the machine box 1, an image acquisition unit is further arranged on the machine box 1, the image acquisition unit comprises a first image acquisition assembly above the sample placing platform 2, a second image acquisition assembly behind the sample placing platform 2 and a third image acquisition assembly left to the sample placing platform 2, a machine cover 3 for covering the image acquisition unit is arranged at the top end of the machine box 1, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are connected with a control unit, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly are used for acquiring image information of the cigarette packaging print placed on the sample placing platform 2 and sending to the control unit, the control unit is used for analyzing and judging the received image information, realizing the detection of the cigarette packaging print.

[0026] For the three-dimensional cigarette packaging print, such as cigarette strip or cigarette box, the cigarette packaging print is placed on the sample placing platform 2, the first image acquisition component acquires the image information of the top surface of the cigarette packaging print and sends it to the control unit, the second image acquisition component acquires the image information of the back surface of the cigarette packaging print and sends it to the control unit, and the third image acquisition component acquires the image information of the left surface of the cigarette packaging print and sends it to the control unit. The control unit analyzes and judges the received image information of the top surface of the cigarette packaging print to realize the detection of the top surface of the cigarette packaging print, and analyzes and judges the received image information of the back surface of the cigarette packaging print to realize the detection of the back surface of the cigarette packaging print, and analyzes and judges the received image information of the left surface of the cigarette packaging print to realize the detection of the left surface of the cigarette packaging print. Then the cigarette packaging print is turned over by 180° in one direction, so that the back surface of the cigarette packaging print is turned to the front surface, the first image acquisition component acquires the image information of the bottom surface of the cigarette packaging print and sends it to the control unit, and the second image acquisition component acquires the image information of the front surface of the cigarette packaging print and sends it to the control unit. The control unit analyzes and judges the received image information of the bottom surface of the cigarette packaging print to realize the detection of the bottom surface of the cigarette packaging print, and analyzes and judges the received image information of the front surface of the cigarette packaging print to realize the detection of the front surface of the cigarette packaging print. Then the cigarette packaging print is turned over by 180° in another direction, so that the left surface of the cigarette packaging print is turned to the right surface, the third image acquisition component acquires the image information of the right surface of the cigarette packaging print and sends it to the control unit, and the control unit analyzes and judges the received image information of the right surface of the cigarette packaging print to realize the detection of the right surface of the cigarette packaging print. Therefore, for the three-dimensional cigarette packaging print, the cigarette packaging print detection device based on machine vision can realize comprehensive detection of the six surfaces of the cigarette packaging print.

[0027] For the planar cigarette packaging print, such as flat paper packaging, the cigarette packaging print is placed on the sample placing platform 2, the first image acquisition component acquires the image information of the top surface of the cigarette packaging print and sends it to the control unit, and the control unit analyzes and judges the received image information of the top surface of the cigarette packaging print to realize the detection of the top surface of the cigarette packaging print. Therefore, for the planar cigarette packaging print, the cigarette packaging print detection device based on machine vision only needs to detect the top surface of the cigarette packaging print.

[0028] In summary, the cigarette packaging print detection device based on machine vision can realize automatic identification and judgment of the packaging details of the three-dimensional or planar cigarette packaging print, can improve the detection efficiency and detection accuracy, and can ensure the high quality standard of the cigarette packaging print.

[0029] The method that the control unit analyzes and judges the received image information belongs to the conventional technology in the prior art, and the present application does not need to involve the improvement of the software method. The control unit is specifically an industrial host 7.

[0030] The sample placement platform 2 and the top surface of the case 1 are both horizontally arranged.

[0031] In one embodiment,

[0032] The first image acquisition assembly includes a first light panel 401 parallel to the sample placement platform 2, the first light panel 401 is fixedly connected to the top plate of the case 1 through a first support, a plurality of first light holes are formed in the first light panel 401, a first light source and a first camera 402 are arranged at each first light hole, the first camera 402 is bidirectionally connected to the control unit, the signal output end of the control unit is connected to the first light source, and the control unit is used for controlling the on-off of the first light source and the first camera 402; the light emitted by the first light source is used for irradiating on the top surface of the cigarette packaging print through the corresponding first light hole, each first camera 402 is used for collecting the image information of the top surface of the cigarette packaging print and sending to the control unit, the control unit is used for comprehensively analyzing and judging the image information of the top surface of the cigarette packaging print sent by each first camera 402, and the detection of the top surface of the cigarette packaging print is realized.

[0033] Preferably, the case 1 is provided with a lifting unit, the lifting unit is fixedly provided with the sample placement platform 2 at the top end, a through channel 101 corresponding to the position of the sample placement platform 2 and matching in shape and size is formed in the top plate of the case 1, the signal output end of the control unit is connected to the lifting unit, and the sample placement platform 2 is driven to vertically lift and pass through the through channel 101 through the lifting unit, so that the vertical distance between the top surface of the cigarette packaging print placed on the sample placement platform 2 and the first camera 402 satisfies the focal length of the first camera 402.

[0034] Thus, for the three-dimensional cigarette packaging print such as a cigarette carton or a cigarette box, the control unit controls the lifting unit to vertically lift the sample placement platform 2, so that the starting position of the top surface of the sample placement platform 2 is below the top surface of the cabinet 1, and the cigarette packaging print is placed on the sample placement platform 2 according to the position of the barcode on the cigarette packaging print, so that the barcode is located close to the first image acquisition assembly or the second image acquisition assembly or the third image acquisition assembly. The control unit controls the lifting unit to lift the sample placement platform 2 and make the top surface of the sample placement platform 2 flush with the top surface of the cabinet 1. If the barcode on the cigarette packaging print is located close to the first image acquisition assembly, each first camera 402 acquires the image information of the top surface of the cigarette packaging print and sends it to the control unit. The control unit comprehensively analyzes and judges the image information of the top surface of the cigarette packaging print sent by each first camera 402 to obtain the barcode information on the cigarette packaging print. If the barcode on the cigarette packaging print is located close to the second image acquisition assembly, the second image acquisition assembly acquires the image information of the back surface of the cigarette packaging print and sends it to the control unit. The control unit analyzes and judges the received image information of the back surface of the cigarette packaging print to obtain the barcode information on the cigarette packaging print. If the barcode on the cigarette packaging print is located close to the third image acquisition assembly, the third image acquisition assembly acquires the image information of the left surface of the cigarette packaging print and sends it to the control unit. The control unit analyzes and judges the received image information of the left surface of the cigarette packaging print to obtain the barcode information on the cigarette packaging print. Then, the control unit obtains the product specification information of the cigarette packaging print according to the barcode information, determines the height of the cigarette packaging print according to the product specification information, and controls the lifting unit to vertically lift the sample placement platform 2 by a certain height according to the height of the cigarette packaging print. The cigarette packaging print vertically lifts the sample placement platform 2 by a certain height, so that the vertical distance between the top surface of the cigarette packaging print and the first camera 402 satisfies the focal length of the first camera 402. Then, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly cooperate to acquire the image information of the cigarette packaging print again and send it to the control unit. The control unit analyzes and judges the received image information to realize the automatic identification and judgment of the packaging details of the cigarette packaging print.

[0035] For the planar cigarette packaging print, such as the flat paper packaging, the control unit controls the lifting unit to vertically lift the sample placement platform 2 by a certain height, so that the vertical distance between the top surface of the sample placement platform 2 and the first camera 402 satisfies the focal length of the first camera 402, and then the cigarette packaging print is placed on the sample placement platform 2. Each first camera 402 collects image information of the top surface of the cigarette packaging print and sends it to the control unit. The control unit comprehensively analyzes and judges the image information of the top surface of the cigarette packaging print sent by each first camera 402, so as to realize automatic identification and judgment of the packaging details on the top surface of the cigarette packaging print.

[0036] The lifting unit is a motor lead screw structure, and the motor of the motor lead screw structure is a servo motor.

[0037] In one embodiment,

[0038] The second image acquisition assembly includes a second light panel 501 vertically arranged along the left-right direction. The second light panel 501 is fixedly connected to the top plate of the cabinet 1 through a second bracket. A plurality of second light holes are formed in the second light panel 501. A second light source and a second camera 502 are arranged at each second light hole. The second camera 502 is bidirectionally connected to the control unit. The signal output end of the control unit is connected to the second light source. The control unit is used to control the on-off of the second light source and the second camera 502. The light emitted by the second light source is used to irradiate the rear side of the cigarette packaging print through the corresponding second light hole. Each second camera 502 is used to collect image information of the rear side of the cigarette packaging print and send it to the control unit. The control unit is used to comprehensively analyze and judge the image information of the rear side of the cigarette packaging print sent by each second camera 502, so as to realize detection of the rear side of the cigarette packaging print.

[0039] Preferably, a rear limiting strip horizontally arranged along the left-right direction is fixed at the rear edge of the top surface of the sample placement platform 2. The rear limiting strip is used to limit the rear side of the cigarette packaging print, so that the rear side of the cigarette packaging print is parallel to the second light panel 501. In this way, through the arrangement of the rear limiting strip, the rear side edge line of the cigarette packaging print can be aligned with the rear limiting strip, so as to relatively improve the image information accuracy of the rear side of the cigarette packaging print collected by each second camera 502.

[0040] In one embodiment,

[0041] The third image acquisition assembly comprises a third light-emitting panel 601 arranged vertically along the front-rear direction, the third light-emitting panel 601 being fixedly connected to the top plate of the cabinet 1 through a third support, and a plurality of third light-emitting holes being formed in the third light-emitting panel 601, a third light source and a third camera 602 being arranged at each third light-emitting hole, the third camera 602 being bidirectionally connected to the control unit, a signal output end of the control unit being connected to the third light source, and the control unit being configured to control the on-off of the third light source and the third camera 602; the light emitted by the third light source is used to irradiate the left side of the cigarette packaging printed matter through the corresponding third light-emitting hole, each third camera 602 is used to acquire the image information of the left side of the cigarette packaging printed matter and send the image information to the control unit, and the control unit is used to comprehensively analyze and judge the image information of the left side of the cigarette packaging printed matter sent by each third camera 602, so as to realize the detection of the left side of the cigarette packaging printed matter.

[0042] Preferably, a left limiting strip arranged horizontally along the front-rear direction is fixed to the left edge of the top surface of the sample placement platform 2, and the left limiting strip is used to limit the left side of the cigarette packaging printed matter, so that the left side of the cigarette packaging printed matter is parallel to the third light-emitting panel 601. In this way, through the arrangement of the left limiting strip, the left side edge line of the cigarette packaging printed matter can be aligned with the left limiting strip, and thus the accuracy of the image information of the left side of the cigarette packaging printed matter acquired by each third camera 602 can be relatively improved.

[0043] In an embodiment, a signal output end of the control unit is connected to a display unit, and the control unit is configured to send the information of the detected cigarette packaging printed matter to the display unit for display. The display unit is specifically a display 8.

[0044] In an embodiment, an access channel is formed in the front side plate of the machine cover 3, and a blocking door 301 is arranged at the access channel; a safety light grid 9 is arranged on the top surface of the cabinet 1 in the machine cover 3 at one side of the access channel, and the safety light grid 9 is connected to a signal input end of the control unit. When the blocking door 301 is opened, the worker places the cigarette packaging printed matter to be detected on the sample placement platform 2 or flips the cigarette packaging printed matter, at which time the safety light grid 9 detects the approach of a person and sends a signal to the control unit, and the control unit controls the lifting unit to stop running to prevent possible safety accidents, and when the blocking door 301 is closed, the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly start running, and the machine cover 3 and the cabinet 1 cooperate to prevent external light from causing interference in the image acquisition process of the first image acquisition assembly, the second image acquisition assembly and the third image acquisition assembly, so that the detection environment of the cigarette packaging printed matter is long-term stable and controllable.

[0045] In conclusion, the cigarette packaging printed matter detection device based on machine vision can realize automatic identification and determination of cigarette packaging printed matter packaging details, wherein the packaging details include design elements, shape defects and the like.

[0046] The machine case 1 and the machine cover 3 form a closed structure to prevent interference from the external environment, and the bottom end of the machine case 1 is provided with a plurality of pulleys 102 to facilitate movement.

[0047] The sample placement platform 2 is black to avoid interference caused by factors such as reflection and transmission of light.

[0048] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A machine vision-based inspection device for cigarette packaging printing, characterized in that: The system includes a chassis (1), a sample placement platform (2) on the top surface of the chassis (1), and an image acquisition unit on the chassis (1). The image acquisition unit includes a first image acquisition component above the sample placement platform (2), a second image acquisition component behind the sample placement platform (2), and a third image acquisition component to the left of the sample placement platform (2). A cover (3) for covering the image acquisition unit is provided around the top of the chassis (1). The first, second, and third image acquisition components are all connected to the control unit. The first, second, and third image acquisition components work together to acquire image information of the cigarette packaging printed materials placed on the sample placement platform (2) and send it to the control unit. The control unit is used to analyze and judge the received image information to realize the detection of the cigarette packaging printed materials.

2. The machine vision-based cigarette packaging printing inspection device according to claim 1, characterized in that: The top surfaces of the sample placement platform (2) and the chassis (1) are both arranged horizontally.

3. The machine vision-based cigarette packaging printing inspection device according to claim 2, characterized in that: The first image acquisition component includes a first lighting panel (401) parallel to the sample placement platform (2). The first lighting panel (401) is fixedly connected to the top plate of the chassis (1) through a first bracket. The first lighting panel (401) has multiple first lighting holes. Each first lighting hole is provided with a first light source and a first camera (402). The first camera (402) is bidirectionally connected to the control unit. The signal output terminal of the control unit is connected to the first light source. The control unit is used to control the power supply of the first light source and the first camera (402). The light emitted by the first light source is used to illuminate the top surface of the cigarette packaging printed material through the corresponding first lighting hole. Each first camera (402) is used to collect image information of the top surface of the cigarette packaging printed material and send it to the control unit. The control unit is used to comprehensively analyze and judge the image information of the top surface of the cigarette packaging printed material sent by each first camera (402) to realize the detection of the top surface of the cigarette packaging printed material.

4. The machine vision-based cigarette packaging printing inspection device according to claim 3, characterized in that: The housing (1) is equipped with a lifting unit, and a sample placement platform (2) is fixed at the top of the lifting unit. A passage (101) is provided on the top plate of the housing (1) that corresponds to the position of the sample placement platform (2) and is adapted in shape and size. The signal output terminal of the control unit is connected to the lifting unit. The sample placement platform (2) is driven to rise and fall vertically through the lifting unit and pass through the passage (101) so that the vertical distance between the top surface of the cigarette packaging printed material placed on the sample placement platform (2) and the first camera (402) meets the focal length of the first camera (402).

5. The machine vision-based cigarette packaging printing inspection device according to claim 2, characterized in that: The second image acquisition component includes a second lighting panel (501) arranged vertically in the left-right direction. The second lighting panel (501) is fixedly connected to the top plate of the chassis (1) through a second bracket. The second lighting panel (501) has multiple second lighting holes. Each second lighting hole is equipped with a second light source and a second camera (502). The second camera (502) is bidirectionally connected to the control unit. The signal output terminal of the control unit is connected to the second light source. The control unit is used to control the power supply of the second light source and the second camera (502). The light emitted by the second light source is used to illuminate the rear side of the cigarette packaging printed material through the corresponding second lighting hole. Each second camera (502) is used to collect image information of the rear side of the cigarette packaging printed material and send it to the control unit. The control unit is used to comprehensively analyze and judge the image information of the rear side of the cigarette packaging printed material sent by each second camera (502) to realize the detection of the rear side of the cigarette packaging printed material.

6. The machine vision-based cigarette packaging printing inspection device according to claim 5, characterized in that: The sample placement platform (2) has a rear limiting strip fixed at the rear edge of its top surface, which is arranged horizontally in the left-right direction. The rear limiting strip is used to limit the rear side of the cigarette packaging print, so that the rear side of the cigarette packaging print is parallel to the second light-shielding panel (501).

7. The machine vision-based cigarette packaging printing inspection device according to claim 2, characterized in that: The third image acquisition component includes a third lighting panel (601) arranged vertically along the front-back direction. The third lighting panel (601) is fixedly connected to the top plate of the chassis (1) through a third bracket. The third lighting panel (601) has multiple third lighting holes. Each third lighting hole is equipped with a third light source and a third camera (602). The third camera (602) is bidirectionally connected to the control unit. The signal output terminal of the control unit is connected to the third light source. The control unit is used to control the power supply of the third light source and the third camera (602). The light emitted by the third light source is used to illuminate the left side of the cigarette packaging printed material through the corresponding third lighting hole. Each third camera (602) is used to collect image information of the left side of the cigarette packaging printed material and send it to the control unit. The control unit is used to comprehensively analyze and judge the image information of the left side of the cigarette packaging printed material sent by each third camera (602) to realize the detection of the left side of the cigarette packaging printed material.

8. The machine vision-based cigarette packaging printing inspection device according to claim 7, characterized in that: A left limiting strip is fixed at the left edge of the top surface of the sample placement platform (2) and arranged horizontally in the front-back direction. The left limiting strip is used to limit the left side of the cigarette packaging print, so that the left side of the cigarette packaging print is parallel to the third light-shielding panel (601).

9. The machine vision-based cigarette packaging printing inspection device according to claim 2, characterized in that: The signal output terminal of the control unit is connected to the display unit, and the control unit is used to send the detected information of the cigarette packaging printing to the display unit for display.

10. The machine vision-based cigarette packaging printing inspection device according to claim 4, characterized in that: The front panel of the machine cover (3) is provided with a material inlet and outlet channel, and a sealing door (301) is provided at the material inlet and outlet channel; a safety light curtain (9) is provided on the top surface of the machine box (1) inside the machine cover (3) on one side of the material inlet and outlet channel, and the safety light curtain (9) is connected to the signal input terminal of the control unit.

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