Detection system and method for evaluating trademark die cutting quality

Abstract

The invention discloses a detection system and method for evaluating trademark die cutting quality. The detection system comprises a mechanical arm, a vacuum chuck, an image acquisition device and a grating ruler, the image acquisition device, the mechanical arm and the grating ruler are arranged on the sample detection platform; the mechanical arm is provided with a vacuum chuck, performs fixed-point continuous sampling on label paper through the vacuum chuck, places a label paper sample adsorbed by the vacuum chuck in a detection area of the sample detection platform according to a positioning signal of the grating ruler, and adsorbs the label paper sample to a sample placement position after detection is completed; the image acquisition device is used for carrying out photographing and surface scanning on the label paper sample in the detection area and forming a point cloud data file according to the obtained sample image and sample surface scanning data so as to carry out label die cutting quality evaluation. The trademark die cutting device can improve the trademark die cutting quality and the cigarette packaging forming quality.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette packaging detection, and more specifically, to a detection system and method for evaluating trademark die-cutting quality. Background Art

[0002] The quality of trademark die-cutting directly affects its adaptability to the machine and the packaging quality of cigarette products. For example, if the trademark die-cutting size is not appropriate, it will directly lead to low machine efficiency and high trademark consumption; if the indentation is heavy, the indentation line is easy to burst; if the indentation is light, the indentation stiffness is large, the trademark is not easy to fold, and it is not flat after forming or it is easy to be glued loose and debond; if the indentation is wide, it is easy to be skewed after packaging. At present, the only common die-cutting effect detection has a dedicated detection equipment for the indentation stiffness detection. The detection process requires fixed-point sampling of the trademark paper, and the indentation line of the trademark paper is damaged and cannot be measured repeatedly. There is no dedicated detection equipment for the die-cutting size, indentation width, depth, and parallelism of the indentation line of the trademark paper, and there are no relevant regulations in the industry standard / enterprise standard for indicators such as indentation width, depth, and parallelism of the indentation line. Therefore, how to detect the quality of trademark die-cutting to improve the die-cutting quality of the trademark, thereby improving the adaptability of the trademark to the machine and the packaging quality, is of great significance. Summary of the invention

[0003] The present invention provides a detection system and method for evaluating trademark die-cutting quality, which solves the problems of inaccuracy and inconvenience in existing trademark die-cutting quality detection, can improve the trademark die-cutting quality, and improve the cigarette packaging molding quality.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A detection system for evaluating the quality of trademark die-cutting, comprising: a mechanical arm, a vacuum suction cup, an image acquisition device and a grating ruler;

[0006] The image acquisition device, the mechanical arm and the grating ruler are arranged on a sample detection platform;

[0007] The mechanical arm is provided with a vacuum suction cup, and the mechanical arm continuously samples the trademark paper at a fixed point through the vacuum suction cup, and places the trademark paper sample adsorbed by the vacuum suction cup in the detection area of ​​the sample detection platform according to the positioning signal of the grating ruler, and adsorbs the trademark paper sample to the sample placement position after the detection is completed;

[0008] The image acquisition device takes a photo and scans the surface of the trademark paper sample in the detection area, and forms a point cloud data file based on the acquired sample image and sample surface scanning data to evaluate the trademark die-cutting quality.

[0009] Preferably, the sample detection platform is provided with a mechanical servo control system, a data transmission system and a data processing system;

[0010] The mechanical servo control system is connected to the mechanical arm signal to control the mechanical arm to run according to a set trajectory;

[0011] The data transmission system is connected to the image acquisition device through a communication port, and transmits the sample image and the point cloud data file obtained by detection to the data processing system;

[0012] The data processing system processes and analyzes the point cloud data file to obtain indentation information of the trademark paper sample, and determines the trademark printing error according to the indentation information.

[0013] Preferably, a seismic stabilization platform is provided at the bottom of the sample detection platform to reduce equipment vibration.

[0014] Preferably, it also includes: a display screen;

[0015] The display screen is respectively connected to the data processing system and the image acquisition device by signals, and is used for displaying the detection results in real time.

[0016] Preferably, the image acquisition device comprises: an industrial CCD camera;

[0017] The industrial CCD camera is arranged just above the detection area and is used to take a picture of the trademark paper sample laid on the detection area to obtain a sample image;

[0018] The industrial CCD camera is respectively connected to the data transmission system and the data processing system by signals;

[0019] The data processing system obtains the appearance size, printing error and indentation position of the trademark paper according to the sample image.

[0020] Preferably, the image acquisition device further comprises: a line laser scanning head and a three-axis controller;

[0021] The line laser scanning head is arranged above the detection area, and obtains the data of the measured points on the surface to be detected by emitting laser and receiving the laser signal reflected by the surface of the trademark paper sample, so as to form a point cloud data file;

[0022] The line laser scanning head is connected to the three axes and the controller by signal, and the three axes and the controller are used to control the movement of the line laser scanning head in three-dimensional directions.

[0023] The present invention also provides a detection method for evaluating the quality of trademark die-cutting, using the above-mentioned detection system, comprising:

[0024] The robotic arm uses the vacuum suction cup to completely flatten the trademark paper sample on the testing area of ​​the sample testing platform;

[0025] The trademark paper sample is photographed and surface scanned by an image acquisition device, and a point cloud data file is formed according to the acquired sample image and sample surface scanning data;

[0026] The sample image is transmitted to the data processing system through the data transmission system to obtain the appearance size and indentation position information of the trademark paper sample, and compared with the standard image library to obtain the detection result of the trademark paper printing error.

[0027] Preferably, it also includes:

[0028] The mechanical servo control system of the sample testing platform accurately controls the line laser scanning head in the image acquisition device according to the indentation position information fed back by the data processing system, and emits laser longitudinally to the indentation area. The laser is received after being reflected by the trademark paper to be tested, and a series of measured point data on the surface of the trademark paper to be tested is obtained;

[0029] The data transmission system transmits the point data to the data processing system through the communication port, and the data processing system processes the point data to obtain the indentation parameter information.

[0030] Preferably, the data processing system performs data processing on the point data, including:

[0031] The data processing system organizes, reduces noise, intercepts and calculates edges of the point data to accurately measure the width and depth of each section of the indentation on the trademark paper. At the same time, based on the point data splicing and detection table position mapping, it obtains the relative position information between different sections of the indentation and accurately measures the parallelism between the indentations.

[0032] Preferably, it also includes:

[0033] A test report is formed based on the detected appearance size, printing error, indentation position information and indentation parameter information of the trademark paper sample to evaluate the trademark die-cutting quality.

[0034] The present invention provides a detection system and method for evaluating trademark die-cutting quality. A trademark paper sample is placed in a detection area by a mechanical arm, and an image acquisition device is used to photograph and scan the surface of the trademark paper sample to obtain a sample image and sample surface scanning data, thereby solving the problems of inaccuracy and inconvenience in existing trademark die-cutting quality detection, improving the die-cutting quality of the trademark, and improving the cigarette packaging molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0036] Figure 1It is a structural schematic diagram of a detection system for evaluating trademark die-cutting quality provided by the present invention.

[0037] Figure 2 It is a schematic diagram of a detection method for evaluating trademark die-cutting quality provided by the present invention.

[0038] Figure 3 The present invention provides a flow chart for evaluating the quality of trademark die-cutting. DETAILED DESCRIPTION

[0039] In order to enable persons skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0040] In view of the problems of inaccuracy and inconvenience in the current detection of trademark paper die-cutting quality, the present invention provides a detection system and method for evaluating trademark die-cutting quality, which solves the problems of inaccuracy and inconvenience in the existing trademark die-cutting quality detection, can improve the die-cutting quality of trademarks, and improve the molding quality of cigarette packaging.

[0041] like Figure 1 As shown, a detection system for evaluating the quality of trademark die-cutting includes: a mechanical arm 1, a vacuum suction cup 3, an image acquisition device 2 and a grating ruler. The image acquisition device 2, the mechanical arm 1 and the grating ruler are arranged on a sample detection platform 5; the mechanical arm 1 is provided with a vacuum suction cup 3, and the mechanical arm 1 performs fixed-point continuous sampling of trademark paper through the vacuum suction cup 3, and places the trademark paper sample 4 adsorbed by the vacuum suction cup in the detection area of ​​the sample detection platform 5 according to the positioning signal of the grating ruler, and after the detection is completed, the trademark paper sample is adsorbed to the sample placement position; the image acquisition device takes a photo and scans the surface of the trademark paper sample in the detection area, and forms a point cloud data file according to the acquired sample image and sample surface scanning data to evaluate the trademark die-cutting quality.

[0042] Specifically, the trademark paper sample 4 is placed on the sample detection platform 5. Through the mechanical arm 1 and the vacuum suction cup 3, the trademark paper sample can be completely flattened and tightly attached to the suction cup surface, and placed in the detection area of ​​the sample detection platform. The trademark paper sample is photographed by the image acquisition device 2 to obtain the sample image. At the same time, the surface of the trademark paper sample is scanned to obtain the detection data, and then the indentation position information and indentation parameter information are obtained according to the detection data to form a point cloud data file, and then the die cutting quality of the trademark paper sample is evaluated through the sample image and the point cloud data file. The system can improve the die cutting quality of the trademark and improve the cigarette packaging molding quality.

[0043] Furthermore, the sample detection platform is provided with a mechanical servo control system, a data transmission system and a data processing system; the mechanical servo control system is connected to the mechanical arm signal to control the mechanical arm to run according to a set trajectory; the data transmission system is connected to the image acquisition device signal through a communication port to transmit the detected sample image and the point cloud data file to the data processing system; the data processing system processes and analyzes the point cloud data file to obtain the indentation information of the trademark paper sample, and determines the trademark printing error based on the indentation information.

[0044] In practical applications, the mechanical servo control system includes an industrial control servo unit and a data storage unit, which can accurately control the movement of each mechanical component, complete the detection action and store the detection data. The data transmission system can complete the acquisition and transmission of the original detection data, and is electrically connected to the image acquisition device through the communication port. The data processing system can process and analyze the point cloud data file collected by the acquisition and transmission system to obtain the indentation parameter information of the paper. The detection of trademark printing errors includes establishing a trademark printing standard image library, and completing the detection of trademark printing errors by comparing the relative positions of the image feature points with the standard image.

[0045] Furthermore, an anti-vibration stabilization platform is provided at the bottom of the sample detection platform to reduce equipment vibration to ensure detection accuracy.

[0046] The system also includes: a display screen; the display screen is respectively connected to the data processing system and the image acquisition device by signals, and is used to display the detection results in real time.

[0047] Furthermore, the image acquisition device includes: an industrial CCD camera; the industrial CCD camera is arranged directly above the detection area, and is used to take pictures of the trademark paper sample spread on the detection area to obtain a sample image; the industrial CCD camera is signal-connected to the data transmission system and the data processing system respectively; the data processing system obtains the appearance size, printing error and indentation position of the trademark paper according to the sample image.

[0048] Furthermore, the image acquisition device also includes: a line laser scanning head and three axes and a controller; the line laser scanning head is arranged above the detection area, and obtains the measured point data on the surface to be inspected by emitting laser and receiving the laser signal reflected by the surface of the trademark paper sample to form a point cloud data file; the line laser scanning head is connected to the three axes and the controller by signal, and the three axes and the controller are used to control the movement of the line laser scanning head in three-dimensional directions.

[0049] Specifically, the image acquisition device includes an industrial CCD camera, a linear laser scanning head, three axes and a controller. The industrial CCD camera is used to take a picture of the sample, and the size of the trademark, printing error, and the indentation position can be obtained through the data transmission system and the data processing system; the linear laser scanning head obtains data of several measured points on the surface to be inspected by emitting laser and receiving laser signals reflected by the trademark, and the indentation parameter information of the paper can be obtained through the data transmission system and the data processing system. After the industrial CCD camera takes a picture of the sample, the grating ruler can locate the sample information, and the linear laser scanning head scans the indentation according to the indentation position information. The grating ruler is used in conjunction with the sample placement to improve the position accuracy of the sample placement and the laser head scanning, and ensure the accuracy of the precision measurement and the repeatability of the sample detection. The linear laser scanning head is 8mm wide, which can cover the indentation width of the trademark paper, and scan one by one according to the indentation line position information.

[0050] It can be seen that the present invention provides a detection system for evaluating the trademark die-cutting quality. The trademark paper sample is placed in the detection area by a mechanical arm, and the trademark paper sample is photographed and surface scanned by an image acquisition device to obtain the sample image and sample surface scanning data, thereby solving the problems of inaccuracy and inconvenience in the existing trademark die-cutting quality detection, and can improve the die-cutting quality of the trademark and the molding quality of cigarette packaging.

[0051] Accordingly, if Figure 2 and Figure 3 As shown, the present invention also provides a detection method for evaluating the quality of trademark die-cutting, using the above-mentioned detection system, including:

[0052] S1: The robotic arm uses the vacuum suction cup to completely and flatten the trademark paper sample on the detection area of ​​the sample detection platform.

[0053] S2: photographing and scanning the surface of the trademark paper sample through an image acquisition device, and forming a point cloud data file according to the acquired sample image and sample surface scanning data.

[0054] S3: The sample image is transmitted to the data processing system through the data transmission system to obtain the appearance size and indentation position information of the trademark paper sample, and compared with the standard image library to obtain the detection result of the trademark paper printing error.

[0055] The method further includes:

[0056] S4: The mechanical servo control system of the sample testing platform accurately controls the line laser scanning head in the image acquisition device according to the indentation position information fed back by the data processing system, and emits laser longitudinally to the indentation area. The laser is received after being reflected by the trademark paper to be tested, and a series of measured point data on the surface of the trademark paper to be tested is obtained.

[0057] S5: The data transmission system transmits the point data to the data processing system through the communication port, and the data processing system processes the point data to obtain indentation parameter information.

[0058] Furthermore, the data processing system performs data processing on the point data, including:

[0059] The data processing system organizes, reduces noise, intercepts and calculates edges of the point data to accurately measure the width and depth of each section of the indentation on the trademark paper. At the same time, based on the point data splicing and detection table position mapping, it obtains the relative position information between different sections of the indentation and accurately measures the parallelism between the indentations.

[0060] The method further includes:

[0061] S6: A test report is formed based on the detected appearance size, printing error, indentation position information and indentation parameter information of the trademark paper sample to evaluate the trademark die-cutting quality.

[0062] It can be seen that the present invention provides a detection method for evaluating the die-cutting quality of a trademark. The trademark paper sample is placed in a detection area by a mechanical arm, and the trademark paper sample is photographed and surface scanned by an image acquisition device to obtain a sample image and sample surface scanning data, thereby solving the problems of inaccuracy and inconvenience in existing trademark die-cutting quality detection, improving the die-cutting quality of the trademark, and improving the molding quality of cigarette packaging.

[0063] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A detection system for evaluating the quality of trademark die-cutting, characterized in that: include: Robotic arm, vacuum suction cup, image acquisition device and grating ruler; The image acquisition device, the mechanical arm and the grating ruler are arranged on a sample detection platform; The mechanical arm is provided with a vacuum suction cup, and the mechanical arm continuously samples the trademark paper at a fixed point through the vacuum suction cup, and places the trademark paper sample adsorbed by the vacuum suction cup in the detection area of ​​the sample detection platform according to the positioning signal of the grating ruler, and adsorbs the trademark paper sample to the sample placement position after the detection is completed; The image acquisition device takes a photo and scans the surface of the trademark paper sample in the detection area, and forms a point cloud data file based on the acquired sample image and sample surface scanning data to evaluate the trademark die-cutting quality.

2. The detection system for evaluating trademark die-cutting quality according to claim 1, characterized in that: The sample detection platform is provided with a mechanical servo control system, a data transmission system and a data processing system; The mechanical servo control system is connected to the mechanical arm signal to control the mechanical arm to run according to a set trajectory; The data transmission system is connected to the image acquisition device through a communication port, and transmits the sample image and the point cloud data file obtained by detection to the data processing system; The data processing system processes and analyzes the point cloud data file to obtain indentation information of the trademark paper sample, and determines the trademark printing error according to the indentation information.

3. The detection system for evaluating trademark die-cutting quality according to claim 2, characterized in that: An anti-vibration stabilization platform is provided at the bottom of the sample detection platform to reduce equipment vibration.

4. The detection system for evaluating trademark die-cutting quality according to claim 3, characterized in that: Also includes: Display screen; The display screen is respectively connected to the data processing system and the image acquisition device by signals, and is used for displaying the detection results in real time.

5. The detection system for evaluating trademark die-cutting quality according to claim 4, characterized in that: The image acquisition device comprises: an industrial CCD camera; The industrial CCD camera is arranged just above the detection area and is used to take a picture of the trademark paper sample laid on the detection area to obtain a sample image; The industrial CCD camera is respectively connected to the data transmission system and the data processing system by signals; The data processing system obtains the appearance size, printing error and indentation position of the trademark paper according to the sample image.

6. The detection system for evaluating trademark die-cutting quality according to claim 5, characterized in that: The image acquisition device also includes: a line laser scanning head and three axes and a controller; The line laser scanning head is arranged above the detection area, and obtains the data of the measured points on the surface to be detected by emitting laser and receiving the laser signal reflected by the surface of the trademark paper sample, so as to form a point cloud data file; The line laser scanning head is connected to the three axes and the controller by signal, and the three axes and the controller are used to control the movement of the line laser scanning head in three-dimensional directions.

7. A detection method for evaluating the quality of trademark die-cutting, using the detection system according to any one of claims 1 to 6, characterized in that: include: The robotic arm uses the vacuum suction cup to completely flatten the trademark paper sample on the testing area of ​​the sample testing platform; The trademark paper sample is photographed and surface scanned by an image acquisition device, and a point cloud data file is formed according to the acquired sample image and sample surface scanning data; The sample image is transmitted to the data processing system through the data transmission system to obtain the appearance size and indentation position information of the trademark paper sample, and compared with the standard image library to obtain the detection result of the trademark paper printing error.

8. The detection method for evaluating trademark die-cutting quality according to claim 7, characterized in that: Also includes: The mechanical servo control system of the sample testing platform accurately controls the line laser scanning head in the image acquisition device according to the indentation position information fed back by the data processing system, and emits laser longitudinally to the indentation area. The laser is received after being reflected by the trademark paper to be tested, and a series of measured point data on the surface of the trademark paper to be tested is obtained; The data transmission system transmits the point data to the data processing system through the communication port, and the data processing system processes the point data to obtain the indentation parameter information.

9. The detection method for evaluating trademark die-cutting quality according to claim 8, characterized in that: The data processing system performs data processing on the point data, including: The data processing system organizes, reduces noise, intercepts and calculates edges of the point data to accurately measure the width and depth of each section of the indentation on the trademark paper. At the same time, based on the point data splicing and detection table position mapping, it obtains the relative position information between different sections of the indentation and accurately measures the parallelism between the indentations.

10. The detection method for evaluating trademark die-cutting quality according to claim 9, characterized in that: Also includes: A test report is formed based on the detected appearance size, printing error, indentation position information and indentation parameter information of the trademark paper sample to evaluate the trademark die-cutting quality.

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