Defect detection device for glass bottle production line
By setting up an image acquisition mechanism, a supplementary lighting mechanism, and a light shield on the glass bottle production line, combined with a cleaning component and a camera cleaning component, the problems of missed detection and false judgment of dust caused by unstable lighting are solved, and efficient and accurate defect detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PUTIAN RIJING GLASS PROD CO LTD
- Filing Date
- 2025-01-15
- Publication Date
- 2026-04-14
AI Technical Summary
In environments with unstable lighting conditions, machine vision inspection systems struggle to maintain stable inspection performance, leading to frequent missed detections in glass bottle defect inspection.
The design incorporates an image acquisition mechanism, a supplementary lighting mechanism, and a light shield to ensure that the glass bottles are illuminated under the same lighting conditions. Combined with the cleaning components and camera cleaning components, it improves the clarity and accuracy of image acquisition.
It reduces missed detections due to insufficient light and misjudgments due to dust, thus improving the accuracy and efficiency of glass bottle defect detection.
Smart Images
Figure CN224122500U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of glass bottle processing, and in particular to a defect detection device for a glass bottle production line. Background Technology
[0002] With the development of technology, machine vision-based automatic inspection systems have gradually become the mainstream choice. These systems capture product images with high-speed cameras and use image processing software to identify product defects, achieving fast and efficient quality inspection.
[0003] However, when faced with complex and ever-changing production environments, especially under unstable lighting conditions, it is difficult to maintain stable detection performance, which may lead to missed detection of some defects during the detection process, resulting in poor detection results. Therefore, further improvements are needed. Utility Model Content
[0004] To reduce the possibility of missed detections and improve the inspection effect of glass bottles, this application provides a defect detection device for glass bottle production lines.
[0005] This application provides a defect detection device for a glass bottle production line, which adopts the following technical solution:
[0006] A defect detection device for a glass bottle production line includes an image acquisition mechanism mounted on a conveyor belt for transporting glass bottles, a supplementary lighting mechanism disposed on one side of the image acquisition mechanism, and a light shield covering the image acquisition mechanism and the supplementary lighting mechanism. The image acquisition mechanism is used to acquire images of passing glass bottles, and the supplementary lighting mechanism is used to provide supplementary lighting to the outside of the glass bottles passing through the image acquisition mechanism. The image acquisition mechanism is electrically connected to a host computer, the host computer is electrically connected to a controller, and the controller is electrically connected to the supplementary lighting mechanism. The light shield has an inlet and an outlet on opposite side walls for the conveyor belt to pass through.
[0007] By adopting the above technical solution and setting up a light shield, the glass bottles are positioned within a certain space. When the supplementary lighting mechanism provides supplementary lighting, the glass bottles passing through are placed under the same lighting environment as much as possible. This also increases the brightness when passing through the image acquisition mechanism, thereby improving the clarity of the images that the image acquisition mechanism can acquire. This reduces the possibility of missed detections due to insufficient light and improves the detection effect of defects on glass bottles.
[0008] Preferably, the image acquisition mechanism includes a first camera and a second camera. The first camera is disposed on one side of the conveyor belt for capturing images of the body of the glass bottle, and the second camera is disposed on the top of the conveyor belt for capturing images of the bottle opening from above. The supplementary lighting mechanism includes a first flash lamp disposed on one side of the first camera and a second flash lamp disposed on one side of the second camera for supplementary lighting of the bottle body and bottle opening, respectively. Two light shields are provided and are respectively covering the first camera and the second camera.
[0009] By employing the above technical solution, the first camera, in conjunction with a first flash, photographs the bottle body. The captured data is then transmitted to a host computer for comparison with the expected width to determine if the bottle has defects such as insufficient inflation. The second camera, in conjunction with a second flash, photographs the bottle opening. By analyzing the luminescence of the inner ring, defects at the bottle opening are determined, thus improving the defect detection effect on glass bottles. The two light shields are designed to reduce interference between the first and second flashes when they are positioned within the same shield, thereby minimizing the possibility of false detections during subsequent inspections.
[0010] Preferably, the two light shields are a first light shield and a second light shield. The first light shield is provided with a first cleaning component at the inlet, which is used to clean dust and other foreign objects from the outer surface of the glass bottle. The second light shield is provided with a second cleaning component at the inlet, which is used to clean dust and other foreign objects from the mouth of the glass bottle.
[0011] By adopting the above technical solution, since the first and second flash lamps sometimes mistakenly identify dust and other foreign objects as defects on the glass bottle when shining light on it, there is a possibility of misjudgment. Therefore, before inspecting the bottle body and bottle mouth, the dust on the bottle body and bottle mouth are cleaned by the first cleaning component and the second cleaning component respectively, thereby reducing the possibility of misjudgment during subsequent inspection.
[0012] Preferably, the first cleaning component includes a mounting plate disposed on the first light shield and flexible bristles disposed on the mounting plate. There are two mounting plates, which are respectively disposed on opposite sides of the inlet. The flexible bristles are disposed on the sidewalls of the two mounting plates that are close to each other, so as to abut against the body of the glass bottle. A channel for the glass bottle to pass through is formed between the two flexible bristles.
[0013] By adopting the above technical solution, as the glass bottle is conveyed by the conveyor belt, it passes through the inlet, where flexible bristles brush off the dust adhering to the glass bottle, thereby reducing the accumulation of dust and other foreign objects on the glass bottle.
[0014] Preferably, the mounting plate is detachably connected to the first light shield, and the first light shield is provided with an adjusting member for adjusting the distance between the two mounting plates.
[0015] By adopting the above technical solution, the channel size will be different for different glass bottle sizes. To address this, an adjusting component is provided to adjust the distance between the two mounting plates, thereby adapting to the groove size required for different sized glass bottles, thus improving the adaptability of the first cleaning component and improving the cleaning effect on the glass bottles.
[0016] Preferably, the second cleaning component includes a suction nozzle disposed at the inlet, an air extraction pipe connected to the suction nozzle, and an air pump connected to the air extraction pipe. The suction nozzle is disposed on the top wall of the inlet and faces the mouth of the glass bottle, and the air pump is externally disposed on the light shield.
[0017] By adopting the above technical solution, the cleaning of the bottle mouth of a glass bottle, which is relatively difficult to do with a brush, can be addressed by setting up a suction nozzle and using an air pump to suck up the air at the bottle mouth to remove dust, thereby reducing the accumulation of dust and other foreign objects at the bottle mouth.
[0018] Preferably, the light shield is provided with two third cleaning components for cleaning the first camera and the second camera respectively. The third cleaning component includes a scraper that abuts against the first camera or the second camera and a drive component that drives the scraper to scrape the dust.
[0019] By adopting the above technical solution, in addition to the dust adhering to the glass bottle itself affecting the defect detection effect, dust on the camera lens itself can also affect the imaging effect of the glass bottle, thus leading to the possibility of misjudgment. To address this, a third cleaning component is set up, which specifically activates the drive unit to scrape the surface of the camera lens with a scraper to maintain the clarity of the lens and reduce the misjudgment phenomenon during glass bottle inspection.
[0020] Preferably, the outer surfaces of both the first and second cameras are coaxially fitted with transparent sleeves.
[0021] By adopting the above technical solution, the camera lens is relatively expensive. If the scraper is scratched during scraping, the repair cost is relatively high. To address this, a transparent sleeve is provided to reduce the damage caused by the scraper when cleaning dust from the lens, and the cost is relatively low.
[0022] In summary, this utility model has the following beneficial effects:
[0023] 1. By setting up a light shield, the glass bottles are placed within a certain space. When the supplementary lighting mechanism provides supplementary lighting, the glass bottles passing by are placed under the same lighting environment as much as possible. This also increases the brightness when passing through the image acquisition mechanism, thereby improving the image clarity that the image acquisition mechanism can acquire. This reduces the possibility of missed detection due to insufficient light and improves the detection effect of defects on glass bottles.
[0024] 2. The first and second cleaning components are used to clean the dust on the bottle body and bottle mouth, thereby reducing the possibility of misjudgment during subsequent testing.
[0025] 3. By setting a third cleaning component, the driving mechanism is activated to scrape the surface of the camera lens with a scraper to maintain the clarity of the lens and reduce misjudgment when inspecting glass bottles. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;
[0027] Figure 2 This is a schematic diagram of the outlet structure in Embodiment 1 of this application;
[0028] Figure 3 This is a schematic diagram of the structure of the first camera in Embodiment 1 of this application;
[0029] Figure 4 This is a schematic diagram of the structure of the second camera in Embodiment 1 of this application;
[0030] Figure 5 This is a schematic diagram of the structure of the first cleaning component in Embodiment 2 of this application;
[0031] Figure 6 This is a schematic diagram of the structure of the second cleaning component in Embodiment 2 of this application;
[0032] Figure 7 This is a schematic diagram of the structure of the third cleaning component in Embodiment 2 of this application;
[0033] Figure 8 This is a schematic diagram of the internal structure of the second light shield in Embodiment 2 of this application.
[0034] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 11. Glass bottle; 111. Bottle body; 112. Bottle mouth; 2. Image acquisition mechanism; 21. First camera; 22. Second camera; 23. Transparent sleeve; 3. Lighting mechanism; 31. First flash; 32. Second flash; 4. Light shield; 41. First light shield; 411. Connecting plate; 412. First fixing plate; 42. Second light shield; 5. Inlet; 6. Outlet; 7. Bracket; 8. First cleaning assembly; 81. Mounting plate; 811. Bolt; 82. Flexible bristles; 83. Adjusting component; 831. Sliding plate; 832. Lead screw; 833. Drive motor; 9. Second cleaning assembly; 91. Suction nozzle; 92. Air extraction pipe; 93. Air pump; 10. Third cleaning assembly; 101. Scraper; 102. Drive component; 103. Receiving trough; 104. Second fixing plate. Detailed Implementation
[0035] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail below.
[0036] This application discloses a defect detection device for a glass bottle production line.
[0037] Example 1:
[0038] A defect detection device for a glass bottle production line, referring to... Figure 1 , Figure 2 and Figure 3 It includes an image acquisition mechanism 2 mounted on a conveyor belt 1 for transporting glass bottles 11, a supplementary lighting mechanism 3 located on one side of the image acquisition mechanism 2, and a light shield 4 covering the image acquisition mechanism 2 and the supplementary lighting mechanism 3. The opposite side walls of the light shield 4 are respectively provided with an inlet 5 and an outlet 6 for the conveyor belt 1 to pass through.
[0039] The image acquisition mechanism 2 is used to acquire images of the passing glass bottle 11, and the supplementary lighting mechanism 3 is used to provide supplementary lighting to the outside of the glass bottle 11 after passing the image acquisition mechanism 2. The image acquisition mechanism 2 is electrically connected to the host computer (not shown in the figure), the host computer is electrically connected to the controller (not shown in the figure), and the controller is electrically connected to the supplementary lighting mechanism 3.
[0040] Reference Figure 3 , Figure 4 The image acquisition mechanism 2, following the conveying direction of the conveyor belt, specifically includes a first camera 21 and a second camera 22. The first camera 21 is located on one side of the conveyor belt 1, specifically mounted on the side of the conveyor belt 1 via a bracket 7, for taking pictures of the body 111 of the glass bottle 11. The second camera 22 is located on the top of the conveyor belt 1, also mounted on the top of the conveyor belt 1 via a bracket 7, for taking pictures of the mouth 112 of the glass bottle 11 from above.
[0041] The supplementary lighting mechanism 3 specifically includes a first flash 31 mounted on one side of the first camera 21 and a second flash 32 mounted on one side of the second camera 22. Both the first flash 31 and the second flash are mounted on corresponding brackets 7 to provide supplementary lighting to the body 111 and mouth 112 of the glass bottle 11, respectively. To reduce the possibility of interference between the first flash 31 and the second flash 32 during supplementary lighting, two light shields 4 are provided: a first light shield 41 covering the first camera 21 and a second light shield 42 covering the second camera 22.
[0042] The implementation principle of a defect detection device for a glass bottle 11 production line according to an embodiment of this application is as follows: A first camera 21, in conjunction with a first flash 31, photographs the bottle body 111. The photographed data is then transmitted to a host computer for comparison with the expected width to determine if the bottle body 111 has defects such as insufficient air blowing. A second camera 22, in conjunction with a second flash 32, photographs the bottle mouth 112. By analyzing the luminous phenomenon of the inner ring, it is determined whether there are defects at the bottle mouth 112, thereby improving the defect detection effect on the glass bottle 11. The two light shields 4 are provided to reduce the possibility of interference between the first flash 31 and the second flash 32 when they are located within the same light shield 4, thus reducing the possibility of false detections during subsequent inspections.
[0043] Example 2:
[0044] Reference Figure 5 , Figure 6 The difference from the embodiment is that, for the inlet 5 and outlet 6 provided on the light shield 4, in this embodiment, the inlet 5 and outlet 6 provided on the first light shield 41 are respectively the first inlet 5 and the first outlet 6, and the outlet 6 provided on the second light shield 42 are respectively the second inlet 5 and the second outlet 6.
[0045] In this embodiment, in order to reduce the impact of dust adhering to the glass bottle 11 on the subsequent defect detection effect of the glass bottle 11, the first light shield 41 is provided with a first cleaning component 8 at the first inlet 5. The first cleaning component 8 is used to clean dust and other foreign objects on the outer surface of the glass bottle 11 body 111. The second light shield 42 is provided with a second cleaning component 9 at the second inlet 5. The second cleaning component 9 is used to clean dust and other foreign objects at the bottle mouth 112 of the glass bottle 11.
[0046] The first cleaning component 8 includes a mounting plate 81 detachably connected to the first light shield 41 and flexible bristles 82 fixedly connected to the mounting plate 81. There are two mounting plates 81, which are respectively located on opposite sides of the inlet 5. Correspondingly, there are also two flexible bristles 82, which are respectively located on the side walls of the two mounting plates 81 that are close to each other, so as to abut against the body 111 of the glass bottle 11. A channel for the glass bottle 11 to pass through is formed between the two flexible bristles 82.
[0047] Specifically, for the installation of the mounting plate 81, the outer surface of the first light shield 41 is provided with a connecting plate 411. There are two connecting plates 411. The two mounting plates 81 respectively abut against the surfaces of the two connecting plates 411 away from the first light shield 41. The mounting plate 81 is provided with bolts 811 for threaded connection with the connecting plate 411.
[0048] Furthermore, the first light shield 41 is provided with an adjusting member 83 for adjusting the distance between the two mounting plates 81. The adjusting member 83 specifically includes a sliding plate 831 fixedly connected to the connecting plate 411, a lead screw 832 threaded through the sliding plate 831, and a drive motor 833 for driving the lead screw 832 to rotate. In this embodiment, the lead screw 832 is a double-threaded lead screw 832. A first fixing plate 412 for the lead screw 832 to rotate is fixedly connected to the outer surface of the first light shield 41. The drive motor 833 is fixedly connected to one of the first fixing plates 412. The output shaft of the drive motor 833 rotates through the first fixing plate 412 and is fixedly connected to the lead screw 832.
[0049] The second cleaning component 9 specifically includes a suction nozzle 91 located at the second inlet 5, an air extraction pipe 92 connected to the suction nozzle 91, and an air pump 93 connected to the air extraction pipe 92. The suction nozzle 91 is located on the top wall of the second inlet 5 and faces the bottle opening 112 of the glass bottle 11. The air pump 93 is externally mounted on the light shield 4. The height of the suction nozzle 91 can also be adjusted by the adjusting component 83 or by other means, such as by a snap-fit mechanism. Different positions of the air extraction pipe 92 can be snapped into the snap-fit mechanism to change the height position of the suction nozzle 91, depending on the specific requirements.
[0050] Reference Figure 7 , Figure 8 Furthermore, in order to reduce the dust adhering to the camera lens and thus affecting the shooting effect on the glass bottle 11, thereby potentially causing misjudgment, in this embodiment, the outer surfaces of the first camera 21 and the second camera 22 are both coaxially fitted with transparent sleeves 23, and the first light shield 41 and the second light shield 42 are respectively provided with third cleaning components 10 for cleaning the transparent sleeves 23.
[0051] The third cleaning component 10 specifically includes a scraper 101 that abuts against the first camera 21 or the second camera 22, and a drive unit 102 that drives the scraper 101 to scrape dust. In this embodiment, the scraper 101 has a guide surface at one end near the first camera 21 or the second camera 22, and a receiving groove 103 is fixedly connected to the other end to receive the scraped dust. The drive unit 102 is specifically a cylinder or an electric push rod, depending on the requirements. A second fixing plate 104 for mounting the drive unit 102 is fixedly connected to the bracket 7.
[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A defect detection device for a glass bottle production line, characterized in that: The system includes an image acquisition mechanism (2) mounted on a conveyor belt (1) for transporting glass bottles (11), a supplementary lighting mechanism (3) located on one side of the image acquisition mechanism (2), and a light shield (4) covering the image acquisition mechanism (2) and the supplementary lighting mechanism (3). The image acquisition mechanism (2) is used to acquire images of the passing glass bottles (11), and the supplementary lighting mechanism (3) is used to provide supplementary lighting to the outside of the glass bottles (11) that have passed through the image acquisition mechanism (2). The image acquisition mechanism (2) is electrically connected to a host computer, and the host computer is electrically connected to a controller. The controller is electrically connected to the supplementary lighting mechanism (3). The light shield (4) has an inlet (5) and an outlet (6) on its opposite side walls for the conveyor belt (1) to pass through.
2. The defect detection device for a glass bottle production line according to claim 1, characterized in that: The image acquisition mechanism (2) includes a first camera (21) and a second camera (22). The first camera (21) is located on one side of the conveyor belt (1) to capture images of the body (111) of the glass bottle (11). The second camera (22) is located on the top of the conveyor belt (1) to capture images of the mouth (112) of the glass bottle (11) from above. The supplementary lighting mechanism (3) includes a first flash (31) located on one side of the first camera (21) and a second flash (32) located on one side of the second camera (22) to provide supplementary lighting to the body (111) and mouth (112) of the glass bottle (11) respectively. The light shield (4) has two parts and covers the first camera (21) and the second camera (22) respectively.
3. A defect detection device for a glass bottle production line according to claim 2, characterized in that: The two light shields (4) are a first light shield (41) and a second light shield (42). The first light shield (41) is provided with a first cleaning component (8) at the inlet (5). The first cleaning component (8) is used to clean dust and other foreign objects on the outer surface of the glass bottle (111). The second light shield (42) is provided with a second cleaning component (9) at the inlet (5). The second cleaning component (9) is used to clean dust and other foreign objects at the bottle mouth (112) of the glass bottle (11).
4. A defect detection device for a glass bottle production line according to claim 3, characterized in that: The first cleaning component (8) includes a mounting plate (81) disposed on the first light shield (41) and flexible bristles (82) disposed on the mounting plate (81). There are two mounting plates (81) respectively disposed on opposite sides of the inlet (5). The flexible bristles (82) are disposed on the side walls of the two mounting plates (81) that are close to each other, so as to abut against the body (111) of the glass bottle (11). A channel for the glass bottle (11) to pass through is formed between the two flexible bristles (82).
5. A defect detection device for a glass bottle production line according to claim 4, characterized in that: The mounting plate (81) is detachably connected to the first light shield (41), and the first light shield (41) is provided with an adjusting member (83) for adjusting the distance between the two mounting plates (81).
6. A defect detection device for a glass bottle production line according to claim 3, characterized in that: The second cleaning component (9) includes a suction nozzle (91) disposed at the inlet (5), an air extraction pipe (92) connected to the suction nozzle (91), and an air pump (93) connected to the air extraction pipe (92). The suction nozzle (91) is disposed on the top wall of the inlet (5) and faces the bottle mouth (112) of the glass bottle (11). The air pump (93) is externally placed on the light shield (4).
7. A defect detection device for a glass bottle production line according to claim 2, characterized in that: The light shield (4) is provided with two third cleaning components (10) for cleaning the first camera (21) and the second camera (22) respectively. The third cleaning component (10) includes a scraper (101) that abuts against the first camera (21) or against the second camera (22) and a drive (102) that drives the scraper (101) to scrape the dust.
8. A defect detection device for a glass bottle production line according to claim 7, characterized in that: The outer surfaces of the first camera (21) and the second camera (22) are both coaxially fitted with transparent sleeves (23).