Liquid foreign matter detection device
By using a swing mechanism in the liquid foreign matter detection device to swing the container to be detected back and forth in a vertical plane, the problem of unstable shape and relative position during the movement of the container is solved, and a higher detection accuracy and a simplified detection process are achieved.
Patent Information
- Application Number
- CN202421349134.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In liquid foreign matter detection, the instability of shape and relative position during the movement of the container to be detected affects the accuracy of foreign matter detection.
A liquid foreign matter detection device is designed, including a conveyor belt, a swing mechanism, a camera, a light source and a clamping mechanism. The swing mechanism causes the container to be detected to swing back and forth in a vertical plane to ensure that the relative position of the camera and the container to be detected remains unchanged, and the container is within the illumination range of the light source.
By keeping the relative position of the container to be detected and the camera unchanged, foreign matter in the liquid can be effectively detected, which improves the accuracy of detection and simplifies the detection process.
Smart Images
Figure CN222913516U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of visual inspection, and particularly to a liquid foreign object detection device. Background Art
[0002] There is a risk of foreign objects being mixed into bottled or bagged liquids during production, filling, sealing and other processes. These foreign objects affect the safety of medication and drinking. Therefore, it is necessary to detect foreign objects in liquids. With the development of technology, visual on-line inspection technology has gradually matured. A camera can be used to photograph moving bottled or bagged liquids, and by comparing a series of images taken multiple times, the detection of moving foreign objects in the liquid can be achieved. And how to ensure the stability of the shape and relative position of the container to be detected during the movement process has an important impact on the accuracy of detecting foreign objects in the liquid. Summary of the Utility Model
[0003] To overcome the problems existing in the related art, the utility model provides a liquid foreign object detection device.
[0004] According to an embodiment of the utility model, there is provided a liquid foreign object detection device, which is characterized by comprising: a conveyor belt, a swing mechanism, a camera, a light source and a clamping mechanism, wherein:
[0005] The swing mechanism includes a detection table, and the conveyor belt, the camera and the clamping mechanism are all arranged on the detection table. The swing mechanism is configured such that the container to be detected carried on the detection table can swing back and forth in a vertical plane, and during the swinging process, the relative positions of the container to be detected and the camera always remain unchanged;
[0006] The light source is configured such that it is always within the irradiation range of the light source during the swinging process of the container to be detected;
[0007] The clamping mechanism includes a lifting device and a pressing device connected to the lifting device. The lifting device is used to drive the pressing device to approach or move away from the container to be detected, so as to maintain the container to be detected at a preset position on the detection table.
[0008] Optionally, the light source is arranged on the swing mechanism, and during the swinging process of the swing mechanism, the relative positions of the container to be detected, the camera and the light source always remain unchanged.
[0009] Optionally, the camera and the light source are respectively arranged on both sides of the container to be detected.
[0010] Optionally, a plurality of cameras are arranged at intervals along the transmission direction of the conveyor belt, and each camera is used to detect at least one container to be detected.
[0011] Optionally, the pressing device includes a housing configured in a groove shape and a pressing plate movably covering an opening of the housing. A guide post is disposed in the housing, a spring is sleeved on the guide post, and the spring is connected to the pressing plate.
[0012] Optionally, the number of the pressing plates and the springs is multiple and corresponds to the number of the containers to be detected.
[0013] Optionally, the conveyor belt includes a crawler body surrounded in a ring shape and a plurality of partitions disposed on an outer periphery of the crawler body and arranged at intervals. A space for accommodating the container to be detected is defined between two adjacent partitions.
[0014] Optionally, the liquid foreign object detection device further includes a stop strip, which is disposed on the detection table and outside the conveyor belt, and is used to prevent the container to be detected from laterally slipping out of the conveyor belt.
[0015] Optionally, the swinging mechanism includes a swinging motor and a swing frame connected to the swinging motor. The conveyor belt, the camera and the light source are all disposed on the swing frame.
[0016] The technical solution provided by the embodiment of the present invention may include the following beneficial effects: In the liquid foreign object detection device provided by the present invention, the bottle or bag containing liquid and other containers to be detected are reciprocally swung in a vertical plane through the swinging mechanism. During the swinging process, the relative positions of the container to be detected and the camera always remain unchanged, and the container to be detected is always within the irradiation range of the light source. Specifically, during the swinging process, the container to be detected tilts and the liquid shakes, and the foreign objects originally settled at the bottom or suspended will displace relative to the container to be detected. The camera acquires multiple frames of images under the irradiation of the light source. Since the relative positions of the container to be detected and the camera always remain unchanged, the displaced objects in the multiple frames of images are foreign objects at this time. In this way, through the differential imaging and comparison of the multiple frames of images, it is very easy to detect and track the foreign objects in the liquid, thereby improving the accuracy of foreign object detection.
[0017] The conveyor belt is disposed on the swinging mechanism and can swing along with the swinging mechanism. In this way, after the conveyor belt transports the container to be detected to a preset position on the detection table and the container to be detected is clamped and fixed, it can be directly swung and the foreign objects can be detected without previously detaching the container to be detected from the conveyor belt, which is more convenient in operation and helps to save the detection process. And the container to be detected is maintained on the detection table by the clamping mechanism, which enables the container to be detected to swing in a state where the clamping mechanism provides reliable clamping, ensuring that the container to be detected will not displace and deform during the swinging process. Through the differential imaging and comparison of the multiple frames of images, the interference caused by the container to the detection can be offset, and the accuracy of foreign object detection can be improved.
[0018] Other features and advantages of the present utility model will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model.
[0020] Figure 1 is a schematic structural diagram of a detection device provided by an exemplary embodiment of the present utility model.
[0021] Figure 2 is Figure 1 a schematic structural diagram of the detection device in another perspective.
[0022] Figure 3 is Figure 1 a top view of the detection device in
[0023] Figures 4a to 4e a schematic diagram of the detection device provided by an exemplary embodiment of the present utility model in different working states.
[0024] Figure 5 is a cross-sectional view of a pressing device provided by an exemplary embodiment of the present utility model.
[0025] DESCRIPTION OF THE REFERENCE NUMERALS
[0026] 1 - conveyor belt, 11 - crawler body, 12 - partition, 2 - swing mechanism, 21 - swing motor, 22 - detection table, 23 - swing frame, 3 - camera, 4 - light source, 5 - clamping mechanism, 51 - lifting device, 52 - pressing device, 521 - housing, 522 - pressing plate, 523 - guide post, 524 - spring, 6 - container to be detected, 7 - stop bar. SPECIFIC IMPLEMENTATION
[0027] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present utility model. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present utility model as detailed in the appended claims.
[0028] Unless otherwise specified, the orientation terms such as "upper", "lower", "left", and "right" are defined according to the directions indicated in the corresponding drawings, and "inner" and "outer" refer to the inside and outside of the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present utility model are used to distinguish one element from another and do not have sequentiality and importance.
[0029] As Figures 1 to 5 shown, an embodiment of the present utility model provides a liquid foreign object detection device, which includes a conveyor belt 1, a swing mechanism 2, a camera 3, a light source 4, and a clamping mechanism 5. Among them, the swing mechanism 5 includes a detection table 22, and the conveyor belt 1, the camera 3, and the clamping mechanism 5 are all arranged on the swing mechanism 2. The swing mechanism 2 is configured such that the container 6 to be detected carried on the detection table 22 can swing reciprocally in a vertical plane, and during the swinging process, the relative positions of the container 6 to be detected and the camera 3 always remain unchanged. The light source 4 is configured such that the container 6 to be detected is always within the irradiation range of the light source 4 during the swinging process. The clamping mechanism 5 includes a lifting device 51 and a pressing device 52 connected to the lifting device 51. The lifting device 51 is used to drive the pressing device 52 to approach or move away from the container 6 to be detected, so as to maintain the container 6 to be detected at a preset position on the detection table 22.
[0030] The container 6 to be detected can be, for example, a bottle or a bag filled with liquid. The bottle can be a bottle made of hard material or a bottle made of flexible material. The detection table 22 is arranged on the swing mechanism 2, and the conveyor belt 1 and the camera 3 are arranged on the detection table 1. Therefore, during the process of the swing mechanism 2 driving the detection table 22 to swing, it can simultaneously drive the conveyor belt 1 and the camera 3 thereon to swing.
[0031] It should be noted that the conveyor belt 1 here can be either a part of the entire filling production line or an independently arranged detection production line. For example, when the conveyor belt 1 is a part of the entire filling production line, the conveyor belt 1 can be respectively docked with the bottle loading process and the bottle unloading process. In the present disclosure, the conveyor belt 1 is arranged on the swing mechanism 2. In this way, after the conveyor belt 1 transports the container 6 to be detected to the preset position on the detection table 22 and the container 6 to be detected is clamped and fixed by the clamping mechanism 5, it can directly swing and detect foreign objects. This is mainly different from the solution where the conveyor belt 1 does not swing with the swing mechanism 2. At this time, before the conveyor belt 1 transports the container 6 to be detected to the preset position and before the formal detection, in order to avoid interference of the conveyor belt 1 during the swinging of the container 6 to be detected, it is necessary to disconnect the conveyor belt 1 from the container 6 to be detected in advance. The operation process is relatively complicated, and an additional mechanism for disconnecting the conveyor belt 1 and the container 6 to be detected needs to be set. However, the present disclosure drives the conveyor belt 1 to swing together, which is more convenient in operation and is beneficial to saving the detection process.
[0032] Meanwhile, the clamping mechanism 5 holds the container 6 to be detected at a preset position on the detection table 22. Specifically, the clamping mechanism 5 includes a lifting device 51 and a pressing device 52 connected to the lifting device 51. The lifting device 51 can be, for example, a telescopic cylinder, which is used to drive the pressing device 52 to approach or move away from the container 6 to be detected in the vertical direction, so as to press the container 6 to be detected. This is particularly applicable to the detection device where the container 6 to be detected is a rigid bottle. For example, there are usually words printed on the container 6 to be detected. When the container 6 to be detected swings back and forth in the vertical plane along with the swinging mechanism 2, if it is deformed, the position of the words will change. Similarly, when the container 6 to be detected swings back and forth in the vertical plane along with the swinging mechanism 2, if the container as a whole has an undesired displacement, this undesired displacement will also cause the position of the words to change. According to the principle of differential object analysis, it is precisely because the foreign objects in the liquid are displaced during the swinging process of the container 6 to be detected that the presence of foreign objects can be detected. If the words on the container 6 to be detected are displaced due to deformation, they will easily be misidentified as foreign objects, resulting in a low detection accuracy.
[0033] In the liquid foreign object detection device provided by the present utility model, the clamping mechanism 5 holds the container 6 to be detected on the detection table 22, which enables the container 6 to be detected to swing in a state where the clamping mechanism 5 provides reliable clamping, ensuring that the container 6 to be detected will not be displaced or deformed during the swinging process. By performing differential imaging and comparison on multiple frames of images, the interference caused by the container to the detection can be offset, and the accuracy of foreign object detection can be improved.
[0034] Both the conveyor belt 1 and the camera 3 are arranged on the detection table 22. This is compared with the prior art solution where the container 6 to be detected and the camera 3 are respectively arranged on different moving components. That is, different from the prior art, the camera 3 of the present utility model does not adopt a follow-up detection method, but is arranged on the same moving component, the swinging mechanism 2, so as to enable the camera 3 to always take pictures of the container 6 to be detected throughout the swinging cycle. In this way, the time for taking pictures and detection is greatly extended compared with the prior art, without the need to briefly follow a container 6 to be detected and then return to follow another container 6 to be detected as in the prior art.
[0035] The light source 4 is configured such that it is always within the illumination range of the light source 4 during the swinging process of the container 6 to be detected. Among them, the light source 4 can be configured such that the relative positions of the light source 4, the container 6 to be detected, and the camera 3 always remain unchanged, which will be described in detail later; or the position of the light source 4 can change relative to the container 6 to be detected and the camera 3. Specifically, during the swinging process of the container 6 to be detected and the camera 3, the light source 4 remains stationary. This situation is mainly applicable to the case where the swinging angle of the container 6 to be detected is not large, that is, the swinging angle of the container 6 to be detected does not exceed the illumination range of the light source 4.
[0036] The technical solution provided by the embodiment of the present utility model may include the following beneficial effects: The liquid foreign object detection device provided by the present utility model enables the bottle or bag containing liquid, i.e., the container 6 to be detected, to swing reciprocally in the vertical plane through the swinging mechanism 2. During the swinging process, the relative positions of the container 6 to be detected and the camera 3 always remain unchanged, and the container 6 to be detected is always within the illumination range of the light source 4. Specifically, during the swinging process, the container 6 to be detected tilts and causes the liquid to slosh, and the foreign objects that originally sank to the bottom or were suspended will displace relative to the container 6 to be detected. The camera acquires multiple frames of images under the illumination of the light source 4. Since the relative positions of the container 6 to be detected and the camera 3 always remain unchanged, the displaced objects in the multiple frames of images are the foreign objects at this time. In this way, through the differential imaging and comparison of the multiple frames of images, it is very easy to detect and track the foreign objects in the liquid, thereby improving the accuracy of foreign object detection.
[0037] The conveyor belt 1 is arranged on the swinging mechanism 2 and can swing along with the swinging mechanism 2. In this way, after the conveyor belt 1 transports the container 6 to be detected to the preset position on the detection table 22 and the container 6 to be detected is clamped and fixed, it can directly swing and detect foreign objects without previously detaching the container 6 to be detected from the conveyor belt 1, which is more convenient in operation and helps to save the detection process. And the container 6 to be detected is maintained on the detection table by the clamping mechanism 5, which enables the container 6 to be detected to swing in a state where the clamping mechanism 5 provides reliable clamping, ensuring that the container 6 to be detected will not displace or deform during the swinging process. Through the differential imaging and comparison of the multiple frames of images, the interference caused by the container to the detection can be offset, and the accuracy of foreign object detection can be improved.
[0038] In some embodiments, the light source 4 is arranged on the swinging mechanism 2, and during the swinging process of the swinging mechanism 2, the relative positions of the container 6 to be detected, the camera 3, and the light source 4 always remain unchanged, which is different from the aforementioned embodiment where only the conveyor belt 1 and the camera 3 are arranged on the swinging mechanism 2 and the relative positions of the container 6 to be detected and the camera 3 always remain unchanged. In the embodiment where the relative positions of the container 6 to be detected, the camera 3, and the light source 4 remain unchanged, since the relative position of the light source 4 and the container 6 to be detected remains unchanged, it is not necessary to consider whether the illumination range of the light source 4 will be exceeded when the swinging angle of the container 6 to be detected is too large, and at this time, the illumination intensity of the light source 4 will not change, which will not cause interference to the detection of liquid foreign objects.
[0039] Further, as Figure 3As shown in the figure, the camera 3 and the light source 4 are respectively arranged on both sides of the container 6 to be detected. Specifically, the light source 4 at this time is a backlight source, which can provide good backlight illumination for the container 6 to be detected, which is beneficial to improving the image of foreign objects inside the liquid captured by the camera 3. According to different clamping positions of the container 6 to be detected, the camera 3 and the light source 4 can be respectively arranged on the left and right sides or the upper and lower sides of the container 6 to be detected. Further, a plurality of cameras 3 are arranged at intervals along the transmission direction of the conveyor belt 1, and each camera 3 is used to detect at least one container 6 to be detected. This solution can ensure that during the swinging process of the swinging mechanism, the camera 3 always takes continuous pictures and performs imaging comparison detection on the container 6 to be detected. That is, different from the prior art, the camera 3 takes pictures and detects each container 6 passing through the field of view successively in a snapshot or short-term following manner. The utility model can use a plurality of cameras 3 to detect a plurality of containers 6 to be detected at the same time to improve the detection speed and meet the production demand.
[0040] As Figure 5 shown, the pressing device 52 includes a housing 521 configured in a groove shape and a pressing plate 522 movably covering the opening of the housing 521. A guide post 523 is arranged in the housing 521, and a spring 524 is sleeved on the guide post 523. The spring 524 is connected to the pressing plate 522. Specifically, the lifting device 51 drives the housing 521 to move up and down together with the pressing plate 522 until the pressing plate 522 is in pressing contact with the container 6 to be detected. On the one hand, the spring 524 can buffer the impact on the container 6 to be detected when the pressing device 52 descends, avoiding hard contact damage to the container 6 to be detected. On the other hand, in actual production, for containers of the same specification transported on the same conveyor belt 1 but with some height differences due to manufacturing tolerances, or the same conveyor belt 1 may be used to transport different types of containers. At this time, the existence of the spring 524 can better adapt to this situation. The guide post 523 is used to guide the movement of the spring 524, making the pressing of the pressing plate 522 more reliable.
[0041] The number of the pressing plates 522 and the springs 524 is multiple and corresponds to the number of the containers 6 to be detected. For example, one container 6 to be detected corresponds to one pressing plate 522, or two or more containers 6 to be detected correspond to one pressing plate 522. This is beneficial to avoiding mutual interference between the pressing devices 52. From another perspective, when a whole pressing plate 522 corresponds to a plurality of containers 6 to be detected at the same time, if there are several containers 6 to be detected with a height higher than that of other containers 6 to be detected, since the pressing plate 522 is not flexible, even if some containers 6 to be detected with a higher height can be pressed, other containers 6 to be detected with a lower height may have unexpected displacements during the swinging process because they cannot contact the pressing plate 522.
[0042] AsFigure 3 As shown, in some embodiments, the conveyor belt 1 may include a crawler body 11 that forms a loop and a plurality of partitions 12 disposed on the outer periphery of the crawler body 11 and arranged at intervals. The space for accommodating the container 6 to be detected is defined between two adjacent partitions 12. As the crawler body 11 rotates continuously, the container 6 to be detected thereon is driven to move to a preset position. The bottle loading process upstream of the conveyor belt 1 and the bottle unloading process downstream of the conveyor belt 1 may be configured with similar conveyor structures and docked. Thus, as the conveyor belt 1 rotates, the container 6 to be detected in the bottle loading process is continuously driven onto the conveyor belt 1 on the inspection table 22, and after the inspection is completed, the container 6 to be detected is taken out to the bottle unloading process by rotation.
[0043] Furthermore, the liquid foreign object detection device provided by the present utility model may further include a retaining bar 7. The retaining bar 7 is disposed on the inspection table 22 and outside the conveyor belt 1, and is used to prevent the container 6 to be detected from laterally slipping out of the conveyor belt 1. The number of the retaining bars 7 may be set according to actual needs, as long as the field of view of the camera 3 and the illumination of the light source 4 are not blocked. Alternatively, a transparent baffle may also be used, which can achieve the same purpose.
[0044] In addition, the swing mechanism 2 may further include a swing motor 21 and a swing frame 23 connected to the swing motor 21. The inspection table 22, the conveyor belt 1, the camera 3, and the light source 4 are all disposed on the swing frame 23. The swing motor 21 may be a servo motor, for example, which can precisely control the swing direction, swing angle, and swing speed of the swing frame 23. The inspection table 22, the conveyor belt 1, the camera 3, and the light source 4 are all disposed on the swing frame 23. Thus, when the swing motor 21 drives the swing frame 23 to swing, it can simultaneously drive the inspection table 22, the conveyor belt 1, the camera 3, and the light source 4 disposed on the swing frame 23. Moreover, since the conveyor belt 1, the camera 3, and the light source 4 are all disposed on the swing frame 22, the relative positions of the three during the swing are always kept unchanged. In addition, the light source 4 may be configured as a strip shape. When necessary, multiple cameras may share a strip light source whose length runs through the entire swing mechanism. Since the number of components to be installed is reduced, it is beneficial to improve the assembly efficiency of the detection device.
[0045] The following Figures 4a to 4e exemplarily introduces the process of performing detection using the liquid foreign object detection device of the present utility model. Among them, Figure 4a is shown as the initial state before the container is to be detected. Among them, the pressing device 51 of the clamping mechanism 5 has not yet contacted the container 6 to be detected. In Figure 4b , the lifting device 51 in the clamping mechanism 5 drives the pressing device 52 to press against the top of the container 6 to be detected.
[0046] Figure 4cShown in the clamped state, the swing motor 21 drives the swing frame 22 to drive the container 6 to be detected, the camera 3 and the light source 4 thereon to swing counterclockwise to the first angle. During the swing from the initial position to the first angle position, the camera 3 continuously acquires multiple frames of images of the container 6 to be detected under the illumination of the light source 4. At this time, the bottom sediment foreign objects will move at the bottom of the container 6 to be detected. Specifically, as the container 6 to be detected swings, the foreign objects also move accordingly. And because during the swing, the relative positions among the container 6 to be detected, the camera 3 and the light source 4 always remain unchanged, that is, in the image of the camera 3, the container 6 to be detected itself does not move, while at different swing angles, the foreign objects have all moved relative to the initial position. Based on this principle, by comparing the differential images of multiple frames, it is very easy to detect and track the sediment foreign objects. In addition, by controlling the swing speed or rhythm, the generation of bubbles during the swing can be effectively avoided, thereby improving the detection accuracy.
[0047] When swinging to the first angle, the swing can be stopped briefly. When the swing stops, the liquid level in the container 6 to be detected is stable and does not move. At this time, only the floating and suspended objects in the container move. Therefore, by continuously acquiring multiple frames of images of the container 6 to be detected at the second angle position through the camera 3, it is very easy to detect and track the floating or suspended foreign objects. Compared with the prior art, because the follow-up shooting and detection time is extremely short, and because the moving speed of the container 6 to be detected is relatively fast, it is affected to detect the suspended foreign objects, and it is almost impossible to detect the floating foreign objects. Since the present utility model does not need to consider the problem of follow-up shooting, the container 6 to be detected can swing slowly, and by setting the swing stop point, it is more conducive to improving the detection accuracy.
[0048] The swing frame 22 can continue to swing counterclockwise to other angles, such as swinging to the inverted position of 180°, and can stop swinging at any angle. Then the container 6 to be detected can be swung clockwise back to the initial position. In this way, the foreign objects adhering to the inside of the container 6 to be detected can enter the liquid. In the subsequent detection process, the camera 3 continuously acquires multiple frames of container images of the container 6 to be detected under the illumination of the light source 4, and the foreign objects originally adhering above the liquid level and on the inner side of the container can be compared and detected.
[0049] Figure 4d Shown in the clamped state, the swing motor 21 drives the swing frame 22 to drive the container 6 to be detected, the camera 3 and the light source 4 thereon to swing clockwise to the first angle. Figure 4e Shown as continuing to swing to the second angle, wherein the second angle is greater than the first angle. The principle of detecting foreign objects in the liquid is the same as that during the clockwise swing above, and will not be elaborated here.
[0050] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.
[0051] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.
[0052] Furthermore, any combination can be made between various different embodiments of the present utility model, as long as it does not violate the idea of the present utility model, and it should also be regarded as the content disclosed by the present utility model.
Claims
1. A liquid foreign body detection device, characterized in that: include: A conveyor belt, a swing mechanism, a camera, a light source and a clamping mechanism, wherein: The swing mechanism comprises a detection platform, the conveyor belt, the camera and the clamping mechanism are all arranged on the detection platform, and the swing mechanism is configured to enable the container to be detected carried on the detection platform to swing back and forth in a vertical plane, and during the swinging process, the relative positions of the container to be detected and the camera remain unchanged; The light source is configured so that the container to be inspected is always within the illumination range of the light source during the swinging process; The clamping mechanism includes a lifting device and a pressing device connected to the lifting device, and the lifting device is used to drive the pressing device to approach or move away from the container to be tested, so as to maintain the container to be tested at a preset position on the testing platform.
2. The liquid foreign matter detection device according to claim 1, characterized in that: The light source is arranged on the swing mechanism, and during the swinging of the swing mechanism, the relative positions of the container to be inspected, the camera and the light source remain unchanged.
3. The liquid foreign matter detection device according to claim 2, characterized in that: The camera and the light source are respectively arranged on two sides of the container to be inspected.
4. The liquid foreign matter detection device according to claim 3, characterized in that: A plurality of cameras are arranged at intervals along the conveying direction of the conveyor belt, and each camera is used to inspect at least one container to be inspected.
5. The liquid foreign matter detection device according to claim 1, characterized in that: The clamping device comprises a housing structured in a groove shape and a pressing plate movably covering an opening of the housing. A guide column is arranged in the housing, a spring is sleeved on the guide column, and the spring is connected to the pressing plate.
6. The liquid foreign matter detection device according to claim 5, characterized in that: The number of the pressing plates and the springs is plural and corresponds to the number of the containers to be detected.
7. The liquid foreign matter detection device according to claim 1, characterized in that: The conveyor belt comprises a ring-shaped crawler body and a plurality of partitions arranged at intervals on the periphery of the crawler body, and two adjacent partitions define a space for accommodating the container to be inspected.
8. The liquid foreign matter detection device according to claim 7, characterized in that: It also includes a baffle, which is arranged on the detection platform and located on the outside of the conveyor belt, and is used to prevent the container to be detected from escaping from the conveyor belt laterally.
9. The liquid foreign matter detection device according to claim 1, characterized in that: The swing mechanism comprises a swing motor and a swing frame connected to the swing motor, and the detection platform, the conveyor belt, the camera and the light source are all arranged on the swing frame.