Tank Inspection Device

Abstract

This utility model provides a tank inspection device, relating to the technical field of machine vision. The tank inspection device provided by this utility model includes: an inspection frame, a first linear drive mechanism, and a vision inspection component. The number of the first linear drive mechanism and the vision inspection component are both multiple and correspond one-to-one. The first linear drive mechanism is connected to the inspection frame and the vision inspection component respectively. The first linear drive mechanism is used to drive the vision inspection component to move in a straight line relative to the inspection frame, and the direction of the movement of the vision inspection component driven by the first linear drive mechanism is set at an angle with the vertical direction, so as to simultaneously adjust the vision inspection component in both horizontal and vertical directions.

Description

Technical Field

[0001] This utility model relates to the field of machine vision technology, and in particular to a tank inspection device. Background Technology

[0002] With the rapid development of industrial automation and intelligent manufacturing technologies, visual inspection technology is being used more and more widely in the quality inspection of cylindrical tanks. Cylindrical tanks, as common industrial containers, are widely used in food, chemical, and pharmaceutical industries, and their surface quality directly affects product safety and performance. Traditional tank inspection typically relies on manual visual inspection, which suffers from low efficiency, high subjectivity, and a high rate of missed inspections.

[0003] In modern industrial inspection systems, automated inspection technology based on machine vision has become the mainstream solution. In existing technologies, visual inspection of cylindrical tanks mainly employs a multi-camera collaborative shooting method. This involves arranging multiple fixed industrial cameras in a ring around the tank's axis to achieve 360-degree image acquisition of the tank's surface without blind spots. These cameras are typically mounted on rigid supports and fixed at preset angles and heights, achieving simultaneous multi-angle shooting through synchronous triggering.

[0004] In practical applications, cylindrical tanks of different models often have different heights. However, the camera position of existing detection devices is usually fixed and cannot be adapted to the specific tank height. While this fixed camera layout can meet the detection requirements of tanks of specific heights, when encountering tanks of different heights, it either fails to completely cover the entire tank surface or causes significant changes in the shooting angle and image quality, leading to decreased detection accuracy or failure to complete effective detection. Utility Model Content

[0005] The purpose of this invention is to provide a tank detection device to alleviate the technical problem of poor adaptability in existing tank detection systems.

[0006] This utility model provides a tank inspection device, comprising: an inspection frame, a first linear drive mechanism, and a vision inspection component, wherein the number of the first linear drive mechanism and the vision inspection component are multiple and correspond one-to-one; The first linear drive mechanism is connected to the detection frame and the visual inspection component respectively. The first linear drive mechanism is used to drive the visual inspection component to move in a straight line relative to the detection frame. The direction of the movement of the visual inspection component driven by the first linear drive mechanism is set at an angle with the vertical direction, so as to adjust the visual inspection component in both horizontal and vertical directions at the same time.

[0007] Furthermore, the angle between the direction in which the first linear drive mechanism drives the visual detection component to move and the vertical direction is 20°-40°.

[0008] Furthermore, the tank detection device also includes a second linear drive mechanism, which is disposed between the first linear drive mechanism and the vision detection component, so that the first linear drive mechanism drives the second linear drive mechanism and the vision detection component to move together. The second linear drive mechanism is used to drive the vision detection component to move in a straight line relative to the first linear drive mechanism, and the direction of the movement of the vision detection component driven by the second linear drive mechanism is set at an angle to the direction of the movement of the vision detection component driven by the first linear drive mechanism.

[0009] Furthermore, the angle between the direction in which the second linear drive mechanism drives the visual detection component to move and the direction in which the first linear drive mechanism drives the visual detection component to move is 30°-60°.

[0010] Furthermore, the tank detection device also includes an angle adjustment component, which is connected between the second linear drive mechanism and the vision detection component, so as to drive the vision detection component to rotate relative to the second linear drive mechanism.

[0011] Furthermore, the second linear drive mechanism includes a manual slide rail, a manual slider, and a locking screw; The manual slide rail is connected to the first linear drive mechanism; the manual slider is connected to the angle adjustment component. The manual slider is slidably mounted on the manual slide rail, and the locking screw is mounted on the manual slider to lock the manual slide rail and the manual slider.

[0012] Furthermore, the angle adjustment component includes an adjustment base, an adjustment disc, and an adjustment screw; The adjustment base is connected to the manual slide rail; The adjusting disc is rotatably mounted on the adjusting base. An adjusting head is provided on the side wall of the adjusting disc. The adjusting screw is mounted on the adjusting base, and one end of the adjusting screw abuts against the adjusting head so as to push the adjusting disc to rotate in the vertical plane.

[0013] Furthermore, the detection frame is also equipped with a vertically arranged tank bottom detection component, which includes a vertical adjustment component and a vertical detection light source and a vertical camera respectively installed on the vertical adjustment component, so as to detect the bottom of the tank through the cooperation of the vertical detection light source and the vertical camera.

[0014] Furthermore, the inspection frame is also equipped with a tank guide frame, which is adapted to the visual inspection component to guide the tank to a position below the visual inspection component.

[0015] Furthermore, the testing frame is also equipped with a movable light source assembly, which includes a light source adjustment component, a light source bracket mounted on the light source adjustment component, and a movable light source mounted on the light source bracket. The light source bracket is provided with an avoidance hole adapted to the tank body, and the movable light source is coaxially arranged with the through hole.

[0016] This utility model has at least the following advantages or beneficial effects: The tank inspection device provided by this utility model includes: an inspection frame, a first linear drive mechanism, and a vision inspection component. The number of the first linear drive mechanism and the vision inspection component are both multiple and correspond one-to-one. The first linear drive mechanism is connected to the inspection frame and the vision inspection component respectively. The first linear drive mechanism is used to drive the vision inspection component to move in a straight line relative to the inspection frame, and the direction of the movement of the vision inspection component driven by the first linear drive mechanism is set at an angle with the vertical direction, so as to simultaneously adjust the vision inspection component in both horizontal and vertical directions.

[0017] Since the first linear drive mechanism can drive the visual inspection component to move in a straight line relative to the inspection frame, and the direction of movement is set at an angle with the vertical direction, when the visual inspection component is driven by the first linear drive mechanism, the visual inspection component can be adjusted in both horizontal and vertical directions at the same time, which improves the adjustment convenience of the visual inspection component. After the position of the visual inspection component changes, the viewing angle also changes accordingly, thereby adapting to tanks of different heights. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the tank detection device provided in an embodiment of this utility model; Figure 2 A schematic diagram of the tank bottom detection component of the tank detection device provided in this embodiment of the utility model; Figure 3 A schematic diagram showing the combination of the first linear drive module, the second linear drive module, the angle adjustment component, and the vision inspection component of the tank detection device provided in this embodiment of the utility model; Figure 4 A schematic diagram of the movable light source assembly of the tank detection device provided in this embodiment of the utility model; Figure 5 yes Figure 3 A magnified view of a section at point A.

[0020] Icons: 1-Detection frame; 22-Angle adjustment component; 23-First linear drive mechanism; 24-Second linear drive mechanism; 25-Manual slide rail; 26-Manual slider; 27-Locking screw; 28-Adjustment base; 29-Adjustment disc; 210-Adjustment screw; 211-Adjustment head; 3-Vision inspection component; 4-Tank bottom inspection component; 41-Vertical adjustment component; 42-Vertical inspection light source; 43-Vertical camera; 44-Tank guide frame; 5-Moving light source assembly; 51-Light source adjustment component; 52-Light source bracket; 53-Moving light source; 54-Through hole; 6-Conveyor belt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1-5 As shown, the tank inspection device provided by this utility model includes: an inspection frame 1, a first linear drive mechanism 23, and a vision inspection component 3.

[0028] like Figure 2 As shown, in this embodiment, there are four of each of the first linear drive mechanism 23 and the visual inspection element 3, and they correspond one-to-one. The four first linear drive mechanisms 23 are respectively arranged on the four sides of the inspection frame 1. The four first linear drive mechanisms 23 are completely identical, but their tilting directions are slightly different. From top to bottom, the first linear drive mechanism 23 located on the east side tilts to the east, the first linear drive mechanism 23 located on the south side tilts to the south, the first linear drive mechanism 23 located on the west side tilts to the west, and the first linear drive mechanism 23 located on the north side tilts to the north.

[0029] like Figure 3 As shown, the following text will take the first linear drive mechanism 23 on the east side as an example to describe the structure in detail. The first linear drive mechanism 23 in other directions is similar and will not be described again.

[0030] The first linear drive mechanism 23 is connected to both the detection frame 1 and the visual inspection component 3. The first linear drive mechanism 23 drives the visual inspection component 3 to move linearly relative to the detection frame 1 along a first direction, which forms an angle with the vertical direction, to simultaneously adjust the visual inspection component 3 in both horizontal and vertical directions. The angle between the first direction and the vertical direction is 20°-40°.

[0031] Since the first linear drive mechanism 23 can drive the visual inspection component 3 to move linearly relative to the inspection frame 1 along the first direction, and the first direction is set at an angle to the vertical direction, when the visual inspection component 3 slides on the first linear drive mechanism 23, the visual inspection component 3 can be adjusted in both the horizontal and vertical directions at the same time, which improves the adjustment convenience of the visual inspection component 3 and thus adapts to tanks of different heights.

[0032] like Figure 3 As shown, the first linear drive mechanism 23 is an electric module, such as a lead screw motor module, including an automatic linear guide rail and an automatic slider. Driven by the motor, the automatic slider moves along the automatic linear guide rail in a first direction. The tank detection device has pre-stored model-motion position comparison data in its storage. Before detecting different models of tanks, the user can input the model of the tank into the detection device. Then, the PLC controller selects the motion position data corresponding to the tank model according to the model-motion position comparison data and sends it to the first linear drive mechanism 23. The first linear drive mechanism 23 drives the vision inspection component 3 to move to the corresponding position according to the motion position data, thereby realizing the automatic alignment of the vision inspection component 3.

[0033] Of course, in other feasible solutions, the first linear drive mechanism 23 can also be driven by manual adjustment.

[0034] The tank detection device also includes a second linear drive mechanism 24, which may or may not have the same structure as the first linear drive mechanism 23.

[0035] like Figure 5 As shown, in this embodiment, the adjustment method of the second linear drive mechanism 24 is manual. The second linear drive mechanism 24 is disposed between the first linear drive mechanism 23 and the vision detection element 3, so that the first linear drive mechanism 23 drives the second linear drive mechanism 24 and the vision detection element 3 to move together. The second linear drive mechanism 24 is used to drive the vision detection element 3 to move in a straight line (second direction) relative to the first linear drive mechanism 23, and the first direction and the second direction are set at an angle, which can be 30°-60°. Figure 2 and Figure 3As shown. The visual inspection element 3 can be adapted to tanks of different heights by adjusting the first linear drive mechanism 23, and can be adapted to tanks of different outer diameters by adjusting the second linear drive mechanism 24.

[0036] The first linear drive mechanism 23 further includes an angle adjustment member 22, which is connected between the second moving part and the vision detection member 3, so as to drive the vision detection member 3 to rotate relative to the second fixed part.

[0037] Specifically, such as Figure 5 As shown, the second linear drive mechanism 24 includes a manual slide rail 25, a manual slider 26, and a locking screw 27; the manual slide rail 25 is connected to the automatic slider. The manual slider 26 is fixedly connected to the adjustment base 28 of the angle adjustment component 22. The manual slider 26 is slidably mounted on the manual slide rail 25 and slides along the second direction. The locking screw 27 can be installed on the manual slider 26 by a threaded connection. By rotating the locking screw 27, the locking screw 27 abuts against the manual slider 26, locking the manual slide rail 25 and the manual slider 26.

[0038] The angle adjustment component 22 includes an adjustment base 28, an adjustment disc 29, and an adjustment screw 210. The adjustment base 28 is fixedly connected to the manual slide rail 25. The adjustment disc 29 is rotatably mounted on the adjustment base 28, with its rotating shaft extending horizontally. An adjustment head 211 is provided on the side wall of the adjustment disc 29. The adjustment screw 210 is mounted on the adjustment base 28, and the two can be connected by threads. One end of the adjustment screw 210 abuts against the adjustment head 211. By rotating the adjustment screw 210, the adjustment disc 29 is pushed to rotate in the vertical plane to change the shooting angle.

[0039] like Figure 2 As shown, a vertically arranged tank bottom detection component 4 is also installed on the detection frame 1. The tank bottom detection component 4 includes a vertical adjustment component 41 and a vertical detection light source 42 and a vertical camera 43 respectively installed on the vertical adjustment component 41. The vertical adjustment component 41 is used to adjust the height of the vertical detection light source 42 and the vertical camera 43. The vertical adjustment component 41 can be an electric translation stage. The vertical detection light source 42 and the vertical camera 43 are installed on the slider of the translation stage. The vertical detection light source 42 and the vertical camera 43 work together to detect the bottom surface of the open tank.

[0040] like Figure 1As shown, a conveyor belt 6 is located below the inspection device. The conveyor belt 6 is used to transport the can to the position for visual inspection. To ensure that the can can move accurately to the visual inspection position, a can guide frame 44 is also installed on the inspection frame 1. The can guide frame 44 is adapted to the shooting position of the visual inspection component 3, that is, the can guide the can to be below the visual inspection component 3 through the can guide frame 44. Specifically, the can guide frame 44 includes two guide rods spaced apart in the horizontal direction. Along the conveying direction of the conveyor belt 6 from back to front, the distance between the two guide rods gradually decreases, thereby guiding the can to the middle position of the two guide rods.

[0041] like Figure 4 As shown, the testing frame 1 is also equipped with a movable light source assembly 5. The movable light source assembly 5 includes a light source adjustment component 51, a light source bracket 52 mounted on the light source adjustment component 51, and a movable light source 53 mounted on the light source bracket 52. The light source adjustment component 51 is an electric translation stage. The light source bracket 52 is provided with a through hole 54 adapted to the tank body, thereby avoiding obstruction of the tank body. The movable light source 53 is a ring light source, located below the light source bracket 52, and is coaxially arranged with the through hole 54.

[0042] The working principle of this detection device is as follows: (1) When installing this detection device, the position of the visual detection element 3 in the initial state is manually adjusted by the second linear drive mechanism 24 and the angle adjustment component 22; (2) Different types of cans are placed at the visual inspection position. The position of the visual inspection component 3 is electrically adjusted by the first linear drive mechanism 23 to ensure that the visual inspection component 3 can acquire the image information of the can. The detection device has a memory that can record the number of rotations of the motor of the first linear drive mechanism 23 when the visual inspection component 3 moves from the starting position to the current position (the number of rotations can be obtained by the photoelectric sensor set inside the motor). The controller makes a table (model-movement position comparison data) to match the number of rotations with the can type and stores it in the memory. In other feasible solutions, the existing intelligent first linear drive mechanism 23 can directly output displacement information. The detection device has a memory. After the first linear drive mechanism 23 drives the visual inspection component 3 to the position, it can directly send the displacement output to the memory. The controller makes a table (model-movement position comparison data) to match the displacement data with the can type and stores it in the memory.

[0043] (3) When using this detection device, the user inputs the type of the tank into the detection device. The controller retrieves the model-movement position comparison data in the memory, calls the number of rotations of the motor of the first linear drive mechanism 23 according to the tank type, and controls the motor of the first linear drive mechanism 23 to perform the corresponding movement, driving the vision detection component 3 to run to the position corresponding to the tank type, so that the vision detection component 3 can detect the shape of the tank. During the detection process, the light source adjustment component 51 moves the light source bracket 52, thereby driving the moving light source 53 to illuminate the tank from top to bottom, so that the vision detection component 3 and the vertical camera 43 can detect the surface of the tank.

[0044] After completing the inspection of one type of tank, the automatic slider returns to its initial position to prepare for the next inspection. The initial position can be the lowest point of the automatic slide rail, and each movement involves the automatic slider moving upwards.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tank inspection device, characterized in that, include: The test frame (1), the first linear drive mechanism (23) and the vision inspection component (3) are all multiple and correspond one-to-one; The first linear drive mechanism (23) is connected to the detection frame (1) and the visual inspection component (3) respectively. The first linear drive mechanism (23) is used to drive the visual inspection component (3) to move in a straight line relative to the detection frame (1). The direction of the movement of the visual inspection component (3) driven by the first linear drive mechanism (23) is set at an angle with the vertical direction, so as to adjust the visual inspection component (3) in both horizontal and vertical directions at the same time.

2. The can body detection apparatus according to claim 1, characterized by The angle between the direction of the first linear drive mechanism (23) driving the visual detection component (3) to move and the vertical direction is 20°-40°.

3. The can body detection apparatus according to claim 1, characterized by The tank detection device further includes a second linear drive mechanism (24), which is disposed between the first linear drive mechanism (23) and the vision detection component (3) so that the first linear drive mechanism (23) drives the second linear drive mechanism (24) and the vision detection component (3) to move together; The second linear drive mechanism (24) is used to drive the visual detection element (3) to move in a straight line relative to the first linear drive mechanism (23), and the direction of the movement of the visual detection element (3) driven by the second linear drive mechanism (24) is set at an angle to the direction of the movement of the visual detection element (3) driven by the first linear drive mechanism (23).

4. The can body detection apparatus according to claim 3, characterized by The angle between the direction in which the second linear drive mechanism (24) drives the visual detection element (3) to move and the direction in which the first linear drive mechanism (23) drives the visual detection element (3) to move is 30°-60°.

5. The can body detection apparatus according to claim 3, characterized by The tank detection device further includes an angle adjustment component (22), which is connected between the second linear drive mechanism (24) and the visual detection component (3) to drive the visual detection component (3) to rotate relative to the second linear drive mechanism (24) through the angle adjustment component (22).

6. The can body detection apparatus according to claim 5, characterized by The second linear drive mechanism (24) includes a manual slide rail (25), a manual slider (26), and a locking screw (27). The manual slide rail (25) is connected to the first linear drive mechanism (23); the manual slider (26) is connected to the angle adjustment component (22); The manual slider (26) is slidably mounted on the manual slide rail (25), and the locking screw (27) is mounted on the manual slider (26) to lock the manual slide rail (25) and the manual slider (26).

7. The can body detection apparatus according to claim 6, characterized by The angle adjustment component (22) includes an adjustment base (28), an adjustment disc (29), and an adjustment screw (210); The adjusting base (28) is connected to the manual slide rail (25); The adjusting disc (29) is rotatably mounted on the adjusting base (28). An adjusting head (211) is provided on the side wall of the adjusting disc (29). The adjusting screw (210) is mounted on the adjusting base (28), and one end of the adjusting screw (210) abuts against the adjusting head (211) so that the adjusting disc (29) can be pushed to rotate in the vertical plane by the adjusting screw (210).

8. The can body detection apparatus of claim 1 wherein, The detection frame (1) is also equipped with a vertically arranged tank bottom detection component (4). The tank bottom detection component (4) includes a vertical adjustment component (41) and a vertical detection light source (42) and a vertical camera (43) respectively installed on the vertical adjustment component (41) to detect the bottom of the tank through the cooperation of the vertical detection light source (42) and the vertical camera (43).

9. The can body detection apparatus of claim 1 wherein, The inspection frame (1) is also equipped with a tank guide frame (44), which is adapted to the visual inspection component (3) to guide the tank to the underside of the visual inspection component (3) via the tank guide frame (44).

10. The can body detection apparatus of claim 1 wherein, The testing frame (1) is also equipped with a movable light source assembly (5). The movable light source assembly (5) includes a light source adjustment component (51), a light source bracket (52) mounted on the light source adjustment component (51), and a movable light source (53) mounted on the light source bracket (52). The light source bracket (52) is provided with an avoidance hole adapted to the tank body. The movable light source (53) is coaxially arranged with the through hole (54).

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