Printing color defect detection device

Abstract

The utility model belongs to the technical field of printing color defect detection, and particularly relates to a printing color defect detection device which comprises a rack, a fixing plate is connected to the back end of the top surface of the rack, a storage box is installed on the side wall of the rack, a fixing block is installed at the top end of the rack, and a workbench is further arranged at the top end of the rack. A control assembly of the workbench is arranged in the fixing block, a display screen is installed on one side of the front end of the fixing plate, and a sliding rail is connected to the front end of the fixing plate. The height of the visual camera can be controlled through the electric rod, and therefore the capturing range can be enlarged and reduced through the change of the height position of the visual camera; the position of the visual camera can be conveniently adjusted according to printed commodities of different sizes, the situation that images captured by the visual camera are not clear and not complete is avoided, meanwhile, some defective products with printing color defects can be stored in the storage box, and in conclusion, the practicability of the color defect detection device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing color defect detection, and particularly relates to a printing color defect detection device. Background Art

[0002] Printing is the process of transferring text, images or other information to paper or other media through printing plates or other means. The basic principle of printing is to use the principle that oil and water are immiscible, and to achieve the reproduction of images and texts in printed materials by taking advantage of the different adsorption capacities of the image and non-image parts on the printing plate to absorb ink.

[0003] During the printing production process, it is necessary to detect the color of the printed products to avoid the quality degradation of the products caused by color loss. Therefore, a color defect detection device is used. The existing color defect detection device is based on a visual camera to capture the image of the detected object, and applies image processing technology and color space conversion (such as from RGB to HSV) to analyze and identify color defects. The image captured by the visual camera is particularly critical, but the visual camera is basically fixed in one position, which limits the capture range of the visual camera. This will cause the following problems: 1. If the size of the detected object is larger than the capture range, the capture will be incomplete; 2. If the size of the detected object is smaller than the capture range, the capture will be unclear, which will affect the normal use of the color defect detection device. Utility Model Content

[0004] The purpose of the present utility model is to provide a printing color defect detection device, which aims to solve the problems in the existing technology. The existing color defect detection device is based on a visual camera to capture the image of the detection object, and applies image processing technology and color space conversion (such as from RGB to HSV) to analyze and identify color defects. The image captured by the visual camera is particularly critical, but the visual camera is basically fixed in one position, which limits the capture range of the visual camera. This will cause the following problems: 1. If the size of the detection object is larger than the capture range, it will cause incomplete capture; 2. If the size of the detection object is smaller than the capture range, it will cause unclear capture, which will affect the normal use of the color defect detection device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printing color defect detection device, comprising a frame, a fixed plate connected to the back end of the top surface of the frame, a storage box installed on the side wall of the frame, a fixed block installed on the top of the frame, a workbench also provided on the top of the frame, a workbench control component provided inside the fixed block, a display screen installed on one side of the front end of the fixed plate, a slide rail connected to the front end of the fixed plate, a support plate connected to the top end of the fixed plate, an electric rod installed on the top end of the support plate, the telescopic end of the electric rod connected to the mounting plate, and a visual camera installed on the front end of the mounting plate.

[0006] As a preferred embodiment of the printing color defect detection device of the present invention, the mounting plate is connected to the fixing plate by an electric rod to form a lifting connection.

[0007] As a preferred printing color defect detection device of the present invention, the back end of the mounting plate is connected to the slide rail, and the mounting plate is slidably connected to the fixed plate through the slide rail.

[0008] As a preferred embodiment of the printing color defect detection device of the present invention, an industrial computer is further connected to the interior of the frame, and the industrial computer is electrically connected to the visual camera and the display screen.

[0009] As a preferred printing color defect detection device of the present invention, the control component includes a screw, a bearing, a threaded sleeve and a servo motor, the screw is assembled inside the fixed block, the bearing is installed at one end of the screw, the threaded sleeve is threadedly connected to the surface of the screw, the servo motor is installed at one end of the fixed block, and the output shaft of the servo motor is connected to the other end of the screw.

[0010] As a preferred printing color defect detection device of the present invention, the screw rod is rotatably connected to the fixed block through a bearing, and the top end of the threaded sleeve is connected to the bottom end of the workbench.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model utilizes an electric rod to control the height of the visual camera, and the height change of the visual camera can increase or decrease the capture range, thereby facilitating the adjustment of the position of the visual camera according to printed products of different sizes, thereby avoiding the occurrence of unclear or incomplete captured images by the visual camera. At the same time, the storage box can store some defective products with printed color defects. In summary, the practicality of the color defect detection device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main body and frame of the utility model;

[0016] Figure 3 For this utility model Figure 1 A in the figure shows the enlarged structural diagram;

[0017] Figure 4 This is a schematic diagram of the control component structure of the utility model.

[0018] In the figure: 1. Rack; 2. Fixing plate; 3. Storage box; 4. Fixing block; 5. Workbench; 6. Display screen; 7. Support plate; 8. Electric rod; 9. Slide rail; 10. Mounting plate; 11. Vision camera; 12. Industrial computer; 13. Screw; 14. Bearing; 15. Threaded sleeve; 16. Servo motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a printing color defect detection device, comprising a frame 1, a fixed plate 2 is connected to the back end of the top surface of the frame 1, a storage box 3 is installed on the side wall of the frame 1, a fixed block 4 is installed on the top of the frame 1, a workbench 5 is also provided on the top of the frame 1, a control component of the workbench 5 is provided inside the fixed block 4, a display screen 6 is installed on one side of the front end of the fixed plate 2, a slide rail 9 is connected to the front end of the fixed plate 2, a support plate 7 is connected to the top of the fixed plate 2, an electric rod 8 is installed on the top of the support plate 7, the telescopic end of the electric rod 8 is connected to the mounting plate 10, and a visual camera 11 is installed on the front end of the mounting plate 10.

[0021] In the preferred embodiment, the mounting plate 10 is connected to the fixing plate 2 in a lifting manner via the electric rod 8 .

[0022] In the preferred embodiment, the back end of the mounting plate 10 is connected to the slide rail 9 , and the mounting plate 10 is slidably connected to the fixed plate 2 via the slide rail 9 .

[0023] In the preferred embodiment, an industrial computer 12 is further connected to the interior of the rack 1 , and the industrial computer 12 is electrically connected to the visual camera 11 and the display screen 6 .

[0024] In the embodiment, a visual camera 11 is used to capture the printed items placed on the workbench 5, and then the visual camera 11 transmits the captured image to the industrial computer 12. The industrial computer 12 then applies image processing technology and color space conversion, such as from RGB to HSV, to analyze and identify color defects, and then feeds back the color defects of the printed items to the display screen 6. If the position of the visual camera 11 is adjusted, the power is connected to start the electric rod 8, and then the telescopic end of the electric rod 8 will drive the mounting plate 10 to rise and fall. At the same time, the lifting of the mounting plate 10 will slide along the slide rail 9, and then the lifting of the mounting plate 10 will drive the visual camera 11 installed at the front end to rise and fall. The height change of the visual camera 11 can increase the capture range and reduce the capture range, and then it is convenient to adjust the position of the visual camera 11 according to printed products of different sizes, avoiding the occurrence of unclear and incomplete captured images by the visual camera 11.

[0025] It should be noted that the visual camera 11 and the industrial computer 12 are both existing mature technologies. The model of the industrial computer 12 is rpc-610 b20, and the model of the visual camera 11 is aca3800-2. Therefore, the working principles of the visual camera 11 and the industrial computer 12 will not be described in detail in this article. Example

[0026] See also Figure 1-4 The control component includes a screw rod 13, a bearing 14, a threaded sleeve 15 and a servo motor 16. The screw rod 13 is assembled inside the fixed block 4, the bearing 14 is installed at one end of the screw rod 13, the threaded sleeve 15 is threadedly connected to the surface of the screw rod 13, the servo motor 16 is installed at one end of the fixed block 4, and the output shaft of the servo motor 16 is connected to the other end of the screw rod 13.

[0027] In the preferred embodiment, the screw rod 13 is rotatably connected to the fixed block 4 via the bearing 14 , and the top end of the threaded sleeve 15 is connected to the bottom end of the workbench 5 .

[0028] In the embodiment, according to the description of the above embodiment 1, when the visual camera 11 is working, it is necessary to adjust the position of the workbench 5 so that the workbench 5 is at the bottom end of the visual camera 11. At this time, the servo motor 16 is started, and then the output shaft of the servo motor 16 drives the screw 13 to rotate along the inner ring of the bearing 14 inside the fixed block 4. At the same time, the threaded sleeve 15 starts to move along the thread on the surface of the screw 13, and the movement of the threaded sleeve 15 will drive the workbench 5 to move, thereby sending the workbench 5 to the bottom end of the visual camera 11.

[0029] In summary, the working principle of the color defect detection device is as follows: first, the printed product is placed on the workbench 5 for leveling to prevent wrinkles from affecting the image capture of the visual camera 11, and then the workbench 5 is sent to the bottom of the visual camera 11 using the control component, referring to Example 2, and then the visual camera 11 captures the image and feeds it back to the industrial computer 12, and then the industrial computer 12 applies image processing technology and color space conversion (such as from RGB to HSV) to the image to analyze and identify color defects, and then feeds back the color defects of the printed item to the display screen 6. If the height position of the visual camera 11 needs to be adjusted, refer to Example 1, thereby improving the practicality of the color defect detection device.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A printing color defect detection device, comprising a frame (1), characterized in that: A fixing plate (2) is connected to the back end of the top surface of the frame (1), a storage box (3) is installed on the side wall of the frame (1), a fixing block (4) is installed on the top of the frame (1), a workbench (5) is also provided on the top of the frame (1), and a control component of the workbench (5) is provided inside the fixing block (4); A display screen (6) is installed on one side of the front end of the fixed plate (2), a slide rail (9) is connected to the front end of the fixed plate (2), a top end of the fixed plate (2) is connected to a support plate (7), an electric rod (8) is installed on the top end of the support plate (7), a telescopic end of the electric rod (8) is connected to a mounting plate (10), and a visual camera (11) is installed on the front end of the mounting plate (10).

2. The printing color defect detection device according to claim 1, characterized in that: The mounting plate (10) is connected to the fixing plate (2) in a lifting manner via the electric rod (8).

3. The printing color defect detection device according to claim 1, characterized in that: The back end of the mounting plate (10) is connected to the slide rail (9), and the mounting plate (10) is slidably connected to the fixed plate (2) via the slide rail (9).

4. The printing color defect detection device according to claim 1, characterized in that: An industrial computer (12) is also connected to the interior of the frame (1), and the industrial computer (12) is electrically connected to the visual camera (11) and the display screen (6).

5. The printing color defect detection device according to claim 1, characterized in that: The control assembly includes a screw (13), a bearing (14), a threaded sleeve (15) and a servo motor (16), wherein the screw (13) is assembled inside the fixed block (4), the bearing (14) is mounted on one end of the screw (13), the threaded sleeve (15) is threadedly connected to the surface of the screw (13), the servo motor (16) is mounted on one end of the fixed block (4), and the output shaft of the servo motor (16) is connected to the other end of the screw (13).

6. The printing color defect detection device according to claim 5, characterized in that: The screw rod (13) is rotatably connected to the fixed block (4) via a bearing (14), and the top end of the threaded sleeve (15) is connected to the bottom end of the workbench (5).

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