Quality visual inspection device for a packaging box
By rotating and adjusting the optical camera and light source components, combined with a polarizing light source and lens polarizer, the problem of fixed detection angle in traditional detection devices is solved, enabling multi-angle packaging box detection and improving the accuracy and flexibility of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SEEKING INTELLIGENT CONTROL TECH CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional visual inspection devices have a fixed inspection angle, which leads to missed detections, and they cannot be flexibly adjusted to meet the inspection needs of packaging boxes with different shapes and positions.
It employs a rotatable and adjustable optical camera and light source assembly, combined with a polarizing light source and lens polarizer, to achieve multi-angle detection through mechanical transmission, adapting to the detection of packaging boxes of different shapes and positions.
It improves the accuracy and flexibility of inspection, enabling the detection of defects from multiple angles, adapting to packaging boxes of different shapes and sizes, and enhancing the applicability and efficiency of inspection.
Smart Images
Figure CN224365977U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of visual inspection technology, and in particular to a visual inspection device for the quality of packaging boxes. Background Technology
[0002] The quality requirements for high-end product packaging boxes are becoming increasingly stringent, placing higher demands on defect detection during the production process. Machine vision is being used more and more frequently in the production of such products, replacing manual labor to detect defects and improving production efficiency.
[0003] According to patent publication number CN212916636U, a packaging box appearance inspection device for facilitating defective product sorting includes a machine base, a conveyor section, high-speed CCD cameras, and an air-powered defective product sorting section. The machine base includes a base and a protective chamber. The protective chamber is detachably attached to the base to form an inspection cavity. The conveyor section carries the packaging boxes to be inspected across the inspection cavity in a left-right direction. High-speed CCD cameras are evenly distributed around the periphery of the conveyor section to capture images of each side of the packaging boxes in real time. The conveyor section includes a first belt conveyor section and a second belt conveyor section arranged side-by-side. The air-powered defective product sorting section is built into the inspection cavity and includes a mounting base, a blower box, and a pressure air output section. The pressure air output section is detachably fixed to the base. The blower box is detachably fixed to the mounting base, and its front and rear air outlets correspond to the first and second belt conveyor sections, respectively.
[0004] Traditional product packaging inspection devices typically use optical cameras and other components that can only inspect from a fixed angle, making it difficult to comprehensively detect defects in all parts of the product packaging box, which can easily lead to missed inspections. Furthermore, if it is necessary to inspect the product packaging box from different angles, the position of the inspection equipment needs to be adjusted frequently by humans, which is time-consuming and inflexible. Utility Model Content
[0005] The purpose of this invention is to solve the technical problems of fixed detection angles in existing visual inspection components, which easily lead to missed detections and the inability to perform packaging inspection from multiple angles. Therefore, this invention proposes a visual inspection device for packaging box quality.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a visual inspection device for the quality of packaging boxes, comprising an inspection platform, a packaging box body, and defects. The back of the inspection platform is provided with an inspection link, and the front of the inspection link is fitted with an auxiliary link. An optical camera and a light source assembly are respectively threadedly connected to the connection ends of the inspection link and the auxiliary link. A lens polarizer is connected to the lens end of the optical camera, and a polarizing element is connected to the emitting end of the light source assembly. A connecting rod is provided between the connection points of the inspection link and the auxiliary link, and an installation rod is provided in the connection port at the end of the inspection link.
[0007] As can be seen, in the above technical solution, the camera lens and light source assembly can be rotated and adjusted independently to adjust the detection angle, enabling the product packaging box to be inspected from different angles, obtaining more comprehensive information, helping to discover more defects in different locations, improving the accuracy and precision of the inspection, and at the same time, it can be adapted to product packaging boxes of different shapes, sizes and positions, and can better adapt to various inspection needs by flexibly adjusting the angle.
[0008] Preferably, the positions of the detection link and the auxiliary link are staggered, and both the detection link and the auxiliary link are L-shaped.
[0009] As can be seen, in the above technical solution, the detection link and the auxiliary link are roughly L-shaped, so that the optical camera and the light source assembly at the connection position can be rotated and adjusted at the top surface of the detection stage.
[0010] Preferably, the connecting rod is fixed at the end of the auxiliary connecting rod, and the connecting rod is rotatably connected to the detection connecting rod.
[0011] As can be seen, in the above technical solution, the connecting rod can rotate within the interface of the detection link, and the auxiliary link can rotate on the surface of the detection link when the connecting rod rotates.
[0012] Preferably, the mounting rod is movably connected to the connecting end on the back of the testing platform, and the interface between the mounting rod and the end of the testing link is fixed.
[0013] As can be seen, in the above technical solution, the mounting rod can rotate on the back of the testing table, and the fixed testing link can rotate when the mounting rod rotates.
[0014] Preferably, a fixed bracket is welded to the back of the detection link, and a light source adjustment motor is installed inside the fixed bracket. The rotating end of the light source adjustment motor and the surface of the connecting rod are respectively provided with gears, and the two gears mesh with each other.
[0015] As can be seen, in the above technical solution, the connecting rod can rotate under the action of two gear transmissions.
[0016] Preferably, a camera adjustment motor is installed at the bottom of the detection platform, and sprockets are respectively installed on the rotating end of the camera adjustment motor and the surface of the mounting rod, and a chain is sleeved on the surface of the sprocket.
[0017] As can be seen, in the above technical solution, the chain is sleeved on the surface of the sprocket and meshes with the teeth on the surface of the sprocket. The addition of a camera adjustment motor allows the detection linkage to rotate and be adjusted under the transmission action of the sprocket and the chain.
[0018] Preferably, the defect is located on the surface of the packaging box, and the packaging box is placed on the top surface of the testing table.
[0019] As can be seen, in the above technical solution, the testing platform is a transfer component for the product packaging box. The packaging box above the rollers can be transferred to the testing position by rotating the rollers on the testing platform.
[0020] Beneficial effects
[0021] In this invention, the camera lens and light source assembly can be rotated and adjusted independently to change the detection angle, enabling the product packaging box to be inspected from different angles, obtaining more comprehensive information, helping to discover defects from more different locations, and improving the accuracy and precision of the inspection. It can also adapt to product packaging boxes of different shapes, sizes, and positions, and the flexible angle adjustment better suits various inspection needs, expanding the applicability of the inspection device. Furthermore, the use of mechanical transmission allows for single-end rotation control of the camera and light source assembly, helping inspectors quickly adjust the angle for inspection. For product packaging boxes with special requirements, the optimal inspection angle can be selected according to the actual situation, increasing the flexibility and reliability of the inspection. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a perspective view of the present utility model;
[0024] Figure 3 for Figure 3 Enlarged view of point A;
[0025] Figure 4 This is a side view of the present invention.
[0026] Reference numerals: 1. Inspection table; 2. Packaging box; 3. Defect; 4. Inspection link; 5. Optical camera; 6. Lens polarizer; 7. Auxiliary link; 8. Light source assembly; 9. Polarizing element; 10. Connecting rod; 11. Fixing bracket; 12. Gear; 13. Light source adjustment motor; 14. Mounting rod; 15. Sprocket; 16. Chain; 17. Camera adjustment motor. Detailed Implementation
[0027] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.
[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:
[0030] Reference Figure 1-4 A visual inspection device for packaging box quality includes an inspection table 1, a packaging box body 2, and a defect 3. The defect 3 is located on the surface of the packaging box body 2, and the packaging box body 2 is placed on the top surface of the inspection table 1. The inspection table 1 is a transfer component for the product packaging box body 2. By rotating the rollers on the inspection table 1, the packaging box body 2 above the rollers can be transferred until it passes the defect detection position of the inspection table 1. A detection link 4 is provided on the back of the inspection table 1, and an auxiliary link 7 is attached to the front of the detection link 4. The positions of the detection link 4 and the auxiliary link 7 are staggered, and both the detection link 4 and the auxiliary link 7 are L-shaped. An optical camera 5 and a light source assembly 8 are threadedly connected to the connection ends of the detection link 4 and the auxiliary link 7, respectively. The top of the optical camera 5 is connected to the detection link 4. The connection end is threaded. Similarly, the connection end of the light source assembly 8 and the auxiliary connecting rod 7 is threaded, which can help the staff to quickly install or disassemble the optical camera 5 or the light source assembly 8. The inspection table 1 is a transfer component for the product packaging box 2. By rotating the roller on the inspection table 1, the packaging box 2 above the roller can be transferred until it passes through the optical camera 5 and the light source assembly 8 above the inspection table 1. The optical camera 5 uses vision technology and image processing algorithms to realize the automatic detection of defects 3 on the product packaging box. The defects 3 on the packaging box 2 include, but are not limited to, glue, wrinkled protective film, etc. The light source assembly 8 mainly ensures that the packaging box 2 being inspected receives uniform illumination in order to improve the imaging quality and the accuracy of the inspection. The light source assembly 8 is an LED light source emitter.
[0031] A lens polarizer 6 is connected to the lens end of the optical camera 5, and a polarizer 9 is connected to the emitting end of the light source assembly 8. The lens of the optical camera 5 includes the lens polarizer 6, and one end of the light source assembly 8 includes the polarizer 9. The lens polarizer 6 is used to control the light entering the camera, so that only light in a specific path direction can be captured by the camera. It can suppress reflected light and glare on the surface of the packaging box and reduce light interference. When the surface of the packaging box is illuminated by the light source assembly 8, it will generate reflected light, causing light or overexposure. The lens polarizer 6 filters out these useless reflected light and improves the image spot gain. The polarizer 9 is mainly composed of polarizers, filters, and other components. The light source linear polarizer 9 can ensure that the light shines on the packaging box in a specific polarization direction, thereby enhancing the illumination effect and making the defects 3 on the packaging box 2 more prominent. Through the polarizer 9, stray light unrelated to the detection direction can be filtered out, reducing background noise and improving the accuracy and reliability of detection. Combined with the lens polarizer 6 on the camera lens, it can more effectively reduce the interference of glare, reflection and stray light on image quality, making the defects 3 more clearly visible.
[0032] Specifically, the sample is optically illuminated using a polarized light source, and a polarization extinction device is installed at the optical camera 5. By setting different polarization extinction states of the camera, multiple images of the same defect 3 under different light fields can be obtained. Since some defects 3 are more sensitive to the optical characteristics of polarized light sources, the polarization extinction of the camera results in significant differences in the optical characteristics of defects 3 in the final images under different polarization light fields. On the other hand, other types of defects 3 with similar shapes are not sensitive to the optical characteristics of polarized light sources, and the differences in their optical characteristics under different polarization light field images are not obvious. Based on this, defects 3 with similar shapes can be distinguished. Using this detection scheme, defects 3 that are similar in shape can be more accurately identified during the product manufacturing process, improving the accuracy of detection and the production yield, increasing production efficiency and reducing production costs.
[0033] A connecting rod 10 is provided between the connection point of the detection link 4 and the auxiliary link 7. The end of the connecting rod 10 is fixed to the auxiliary link 7, and the connecting rod 10 is rotatably connected to the detection link 4. The optical camera 5 and the light source assembly 8 are both connected and fixed to the detection link 4 and the auxiliary link 7. The auxiliary link 7 is located on the front of the detection link 4, and the two are connected by the connecting rod 10, so that the auxiliary link 7 and the light source assembly 8 can be rotated and adjusted at the front of the detection link 4. A mounting rod 14 is provided in the connection port at the end of the detection link 4. The mounting rod 14 is movably connected to the connection end on the back of the detection table 1, and the interface between the mounting rod 14 and the end of the detection link 4 is fixed. The detection link 4 is directly rotatably connected to the back of the detection table 1 via the mounting rod 14. The rotation of the mounting rod 14 can also independently control the rotation and angle adjustment of the detection link 4 together with the optical camera 5. During the rotation, since the height of the auxiliary link 7 is lower than that of the detection link 4, the auxiliary link 7 can rotate 180 degrees without affecting the function of the detection link 4. The two can be rotated independently to adjust the detection angle, so that they are located at different positions. This allows for the detection of product packaging boxes from different angles, obtaining more comprehensive information, helping to discover more defects in different locations, and improving the accuracy and precision of the detection. At the same time, it can be adapted to product packaging boxes 2 of different shapes, sizes and positions, with high flexibility.
[0034] A fixed bracket 11 is welded to the back of the detection link 4. A light source adjustment motor 13 is installed inside the fixed bracket 11. Gears 12 are respectively provided on the rotating end of the light source adjustment motor 13 and the surface of the connecting rod 10, and the two gears 12 mesh with each other. The fixed bracket 11 is used to install and fix the light source adjustment motor 13. The gear 12 on the rotating end of the light source adjustment motor 13 and the gear 12 on the connecting rod 10 mesh with each other. When the light source adjustment motor 13 is working, it can drive the connecting rod 10 and the auxiliary link 7 to rotate together under the action of the gear 12. When the detection link 4 rotates, it can rotate together with the auxiliary link 7 and other components, so that the two gears 12 always remain in a meshed state. After the detection link 4 is adjusted, the angle of the auxiliary link 7 can be adjusted separately to place the optical camera 5 and the light source assembly 8 in the required position.
[0035] A camera adjustment motor 17 is installed at the bottom of the testing platform 1. A sprocket 15 is installed on the rotating end of the camera adjustment motor 17 and the surface of the mounting rod 14. A chain 16 is sleeved on the surface of the sprocket 15. The camera adjustment motor 17 is fixedly connected to the bottom of the testing platform 1 through a bracket. Both the rotating end of the camera adjustment motor 17 and the mounting rod 14 are equipped with sprockets 15, and the two sprockets 15 are connected by a chain 16. When the camera adjustment motor 17 is working, it can drive the mounting rod 14 and the testing connecting rod 4 to rotate together to complete the adjustment of the optical camera 5.
[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A visual inspection device for the quality of packaging boxes, comprising an inspection table (1), a packaging box body (2), and defects (3), characterized in that: The back of the detection stage (1) is provided with a detection link (4), and the front of the detection link (4) is attached with an auxiliary link (7). The connection ends of the detection link (4) and the auxiliary link (7) are respectively threaded with an optical camera (5) and a light source assembly (8). The lens end of the optical camera (5) is connected with a lens polarizer (6), and the emission end of the light source assembly (8) is connected with a polarizer (9). A connecting rod (10) is provided between the connection of the detection link (4) and the auxiliary link (7), and an installation rod (14) is provided in the connection port at the end of the detection link (4).
2. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: The positions of the detection link (4) and the auxiliary link (7) are staggered, and both the detection link (4) and the auxiliary link (7) are L-shaped.
3. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: The connecting rod (10) is fixed at the end of the auxiliary connecting rod (7), and the connecting rod (10) is rotatably connected to the detection connecting rod (4).
4. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: The mounting rod (14) is movably connected to the connecting end on the back of the testing table (1), and the interface at the end of the mounting rod (14) and the testing connecting rod (4) is fixed.
5. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: A fixed bracket (11) is welded to the back of the detection link (4). A light source adjustment motor (13) is installed inside the fixed bracket (11). Gears (12) are respectively provided on the rotating end of the light source adjustment motor (13) and the surface of the connecting rod (10), and the two gears (12) mesh with each other.
6. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: A camera adjustment motor (17) is installed at the bottom of the detection platform (1). A sprocket (15) is installed on the rotating end of the camera adjustment motor (17) and the surface of the mounting rod (14). A chain (16) is sleeved on the surface of the sprocket (15).
7. The quality visual inspection device for packaging boxes according to claim 1, characterized in that: The defect (3) is located on the surface of the packaging box (2) and the packaging box (2) is placed on the top surface of the inspection table (1).