Visual detection system for bottle body

Abstract

The utility model provides a visual inspection system for bottle bodies, which comprises a transmission belt, a visual inspection device and a visual inspection device, the multiple sets of shooting assemblies are arranged at different positions of the conveying belt in the conveying direction of the conveying belt, the distances between at least three sets of shooting assemblies and the surface of the conveying belt are different, and the shooting angles of one or more than two sets of shooting assemblies directly face the surface of the conveying belt; the shooting angles of one or more than two groups of shooting components directly face the bottle bodies on the conveying belt; the designated positions of the bottle body are shot through the multiple sets of shooting assemblies, and the designated positions comprise the bottle bottom position, the bottle cap position, the bottle opening position and the bottle body position. According to the utility model, different positions of the bottle body can be shot, and photos obtained by multi-angle shooting can be used for detecting three / four bodies such as the direction of the bottle cap, whether the bottle cap is screwed, a third-stage label, a bottle body label and the like, so that the detection efficiency and the detection quality of the bottle body are improved.

Description

Technical Field

[0001] The utility model relates to the field of bottle body detection equipment, in particular to a visual inspection of bottle bodies. Background Art

[0002] In the production process of bottled products, there are process requirements such as whether the three-phase (production date / expiry date / batch number) identification information required by regulations or labels with the same content on the packaging bottles are clear and correct, whether the bottle caps are properly screwed on, and whether the product bottle labels are properly pasted. By detecting these three production processes, it is determined whether the products can meet the quality requirement standards. However, the existing detection method is manual sampling inspection, but there are problems of missed inspection and inconsistent standards in manual sampling inspection, so that the quality effect cannot be stably guaranteed, and the detection efficiency cannot be improved either. Content of the Utility Model

[0003] An embodiment of the utility model provides a visual inspection system for bottle bodies to solve the problems existing in the related art. The technical solution is as follows:

[0004] An embodiment of the utility model provides a visual inspection system for bottle bodies, including:

[0005] A conveyor belt for transporting bottle bodies;

[0006] Multiple groups of shooting components are respectively arranged at different positions of the conveyor belt along the transportation direction of the conveyor belt. There are at least three groups of shooting components with different heights from the surface of the conveyor belt, and the shooting angles of one group or more than two groups of shooting components are directly facing the surface of the conveyor belt, and the shooting angles of one group or more than two groups of shooting components are directly facing the bottle bodies on the conveyor belt; the specified positions of the bottle bodies are photographed by multiple groups of shooting components, and the specified positions include the bottle bottom position, the bottle cap position, the bottle mouth position, and the bottle body position.

[0007] In one embodiment, the shooting component includes:

[0008] A camera;

[0009] A movable bracket, one end of the movable bracket is fixed at a specified position of the conveyor belt, and the other end is connected to the camera. The movable bracket is used to adjust the position of the camera on the XYZ axes.

[0010] In one embodiment, the movable bracket includes an integrally formed vertical connecting piece and a horizontal connecting piece. The vertical connecting piece is provided with mounting holes, and the vertical connecting piece is connected to the specified position of the conveyor belt through the mounting holes. The horizontal connecting piece is perpendicular to the vertical connecting piece. A linear driving device is installed on the horizontal connecting piece, and the camera is connected to the linear driving device, and the camera is driven to move horizontally by the linear driving device.

[0011] In one embodiment, it further includes:

[0012] A light source, the position of the light source on the conveyor belt corresponding to the position of the camera on the conveyor belt.

[0013] In one embodiment, the light source located directly above the conveyor belt is an annular structured light source, and the annular structured light source irradiates the surface of the conveyor belt.

[0014] In one embodiment, a shielding box body is covered on the conveyor belt. A channel is opened at the position of the shielding box body facing the conveyor belt. The size of the channel is larger than the size of the bottle body, and the channel is used for the bottle body to pass through.

[0015] In one embodiment, a bottle clamping device is provided at the entrance of the conveyor belt. The bottle clamping device is used to clamp the body position of the bottle body and transport the bottle body to the entrance of the conveyor belt.

[0016] In one embodiment, one set or two or more sets of shooting components are provided directly below the bottle clamping device for shooting at the bottom position of the bottle body.

[0017] In one embodiment, a waste discharging device is provided on one side edge of the conveyor belt. The bottle body after being shot by the shooting component is transported to the position where the waste discharging device is located through the conveyor belt, and the waste discharging device is used to remove the bottle bodies with inspection abnormalities.

[0018] In one embodiment, it further includes:

[0019] A central controller, connected to each set of shooting components, for collecting the pictures taken by each set of shooting components; the central controller is also connected to the waste discharging device for sending an execution instruction to the waste discharging device.

[0020] The advantages or beneficial effects in the above technical solutions at least include:

[0021] In the present utility model, there are at least three sets of shooting components with different vertical heights between the shooting components and the surface of the conveyor belt. And the shooting angles of one set or two or more sets of shooting components are facing the surface of the conveyor belt, and the shooting angles of one set or two or more sets of shooting components are facing the bottle bodies on the conveyor belt; the designated positions of the bottle bodies are shot by multiple sets of shooting components, and the designated positions include the bottom position, the cap position, the mouth position and the body position of the bottle. The pictures obtained by multi-angle shooting can be used for detecting the bottom, the cap and the label on the body of the bottle, and can also be used for detecting the direction of the mouth of the bottle and whether the mouth of the bottle is screwed tightly, so as to improve the detection efficiency and detection quality of the bottle body.

[0022] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the drawings, unless otherwise specified, the same reference numerals in multiple drawings denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed according to the present utility model and should not be regarded as limiting the scope of the present utility model.

[0024] Figure 1 It is a schematic diagram of the overall structure of the bottle body vision detection system of the present utility model;

[0025] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the bottle body vision detection system of the present utility model (hiding the partially blocking box);

[0026] Figure 3 It is a front view of the internal structure of the bottle body vision detection system of the present utility model (hiding the partially blocking box);

[0027] Figure 4 It is a three-dimensional schematic diagram of the structure of the shooting component of the present utility model.

[0028] In the figure: 1. The first conveyor belt; 2. The bottle clamping device; 3. The waste discharging device; 4. The shooting component; 41. The camera; 42. The vertical connecting piece; 43. The horizontal connecting piece; 44. The linear driving device; 5. The square light source; 6. The circular ring structure light source; 7. The blocking box; 8. The outer shell. Specific embodiments

[0029] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the production process of bottled products, there are process requirements such as whether the three-phase (production date / expiry date / batch number) identification information required by regulations or labels with the same content on the packaging bottles are clear and correct, whether the bottle caps are properly screwed on, and whether the product bottle labels are properly pasted. Whether these three production processes can meet the quality requirement standards is usually judged by manual sampling inspection or partially by adding vision recognition equipment online. The current methods have the following problems;

[0031] 1. Manual sampling inspection has problems of missed inspection and inconsistent standards, thus unable to stably ensure the quality effect.

[0032] 2. Installing vision inspection equipment online has problems such as cumbersome debugging, high requirements for on-site technology, serious interference of the light field by the outside world, and inability to automatically adapt to the fast and convenient switching of various commodity inspection requirements, etc., resulting in great limitations and uncertainties in the application of technology, and the quality effect is also unsatisfactory.

[0033] 3. Installing vision inspection equipment online has limitations due to the inability of existing vision inspection algorithms to be compatible and the limitations of online installation. Only three workstations can be independently installed (the third-phase inspection workstation, the capping inspection workstation, and the label inspection workstation) with equipment of different functions, resulting in extremely complex debugging every time different products are replaced, seriously affecting efficiency and accuracy, and at the same time increasing equipment investment.

[0034] 4. Multiple inspection devices bring relatively great trouble to the installation in the limited production line space, and some even require the transformation of the production line, and the increase in cost and time reduces efficiency.

[0035] To solve the above problems, this embodiment provides a bottle body vision inspection system, as Figure 1 shown, the system includes:

[0036] A conveyor belt for transporting the bottle body;

[0037] Multiple groups of shooting components 4. In this embodiment, at least three groups of shooting components 4 are arranged on the inspection system. The multiple groups of shooting components 4 are arranged in sequence along the transportation direction of the conveyor belt at different positions on the conveyor belt. Among them, there are at least three groups of shooting components 4 with different vertical distances between the surfaces of the shooting components 4 and the conveyor belt, that is, the heights of at least three groups of shooting components 4 are different, and the shooting angles of one group or more than two groups of shooting components 4 are directly facing the surface of the conveyor belt, that is, the shooting components 4 shoot the cap position of the bottle body on the conveyor belt from top to bottom, the shooting angles of one group or more than two groups of shooting components 4 shoot the body position of the bottle body on the conveyor belt from the side, and the shooting angles of one group or more than two groups of shooting components 4 shoot the bottom position of the bottle body from bottom to top. The multiple groups of shooting components 4 are used to shoot the specified positions of the bottle body, and the specified positions include the bottom position, the cap position, the mouth position, and the body position of the bottle.

[0038] Among them, since the positions of the third-phase labels on the bottle body may be at the bottom of the bottle body, the bottle cap position, or the body position of the bottle, the visual inspection system of this embodiment can take pictures and detect the third-phase labels at any position. At the same time, pictures of the bottle cap can be obtained by taking pictures of the bottle cap position, and the direction of the bottle mouth of the bottle cap can be judged by analyzing the bottle cap pictures through the system software. Pictures of the bottle mouth can also be obtained by taking pictures of the bottle mouth position, and whether the bottle mouth is tightened can be judged by the system software to improve the detection efficiency and quality. The analysis algorithms for pictures in the system software have been disclosed in the prior art. The recognition of label content can be achieved through picture text recognition technology, and the direction of the bottle cap and the judgment of whether the bottle mouth is tightened can be realized through technologies such as picture feature extraction, feature analysis, and feature comparison. Details are not described here.

[0039] The conveyor belt of this embodiment includes a first conveyor belt 1. The first conveyor belt 1 can be set as a belt conveyor. The bottle body is placed on the first conveyor belt 1 and transported by the first conveyor belt 1. During the transportation process, the bottle body at different positions is photographed by multiple groups of photographing components 4 to achieve three / four detections such as the direction of the bottle cap, the tightening of the bottle cap, the third-phase marking, and the body label. In this embodiment, the bottle body on the first conveyor belt 1 is transported with the bottle cap facing up and the bottle bottom facing down.

[0040] The conveyor belt also includes a second conveyor belt. The second conveyor belt is provided at both the entrance and the exit of the first conveyor belt 1. In this embodiment, the second conveyor belt can be set as a bottle clamping device 2. The bottle clamping device 2 clamps the bottle body through two side belts. While the side belts are driven by a motor to operate, the clamped bottle body can be transported towards the entrance of the first conveyor belt 1. At the same time, one or more than two groups of photographing components 4 can be provided at the bottom of the bottle clamping device 2. The photographing angle of the photographing components 4 at this position can photograph the exposed bottle bottom from bottom to top, so as to photograph the markings on the bottle bottom.

[0041] At the same time, the bottle clamping device 2 can be fixed by a lifting platform. Manually adjusting the lifting platform can adjust the height of the bottle clamping device 2 so that the bottle clamping device 2 can be connected to the first conveyor belt 1. In addition, the distance between the two side belts can be manually adjusted to adapt to different bottle bodies and clamp bottle bodies of different sizes.

[0042] The bottle body carried by the bottle clamping device 2 is transported on the first conveyor belt 1 starting from the entrance. During this process, it passes through multiple groups of shooting components 4. The number of shooting components 4 can be adjusted according to the actual situation, but at least three groups of shooting components 4 are required. The heights of at least three groups of shooting components 4 from the first conveyor belt 1 are different. The shooting components 4 with different heights are used to shoot the cap position, the bottle mouth position, and the bottle body position of the bottle body respectively. Among them, one group or more than two groups of shooting components have shooting angles facing the surface of the conveyor belt, and one group or more than two groups of shooting components have shooting angles facing the bottle body on the conveyor belt. Different positions of the bottle body are shot by different shooting angles.

[0043] In this embodiment, three groups of shooting components 4 are provided on the first conveyor belt 1, and the heights of the three groups of shooting components 4 are different. One group of shooting components is located directly above the first conveyor belt 1 and shoots the cap of the bottle body on the first conveyor belt 1 downward; one group of shooting components is located on the side of the first conveyor belt 1, facing the bottle mouth position, and shoots the bottle mouth position of the bottle body from the side of the first conveyor belt 1; the other group of shooting components is located on the side of the first conveyor belt 1, facing the bottle body position, and shoots the bottle body position of the bottle body from the side of the first conveyor belt 1.

[0044] In some embodiments, in order to detect the quality of the specified position on the bottle body as comprehensively as possible, shooting components 4 for shooting the same bottle body position can be provided on both the left and right sides of the first conveyor belt 1. For example, shooting components 4 facing the bottle body position are provided on both the left and right sides of the first conveyor belt 1, and the same specified position of the bottle body can be shot from the left and right sides of the bottle body, avoiding the situation that the shooting picture is incomplete due to single-sided shooting.

[0045] Each group of shooting components 4 includes a camera 41 and a movable bracket. The camera 41 can adjust its position on the first conveyor belt 1 through its corresponding movable bracket. The movable bracket in this embodiment has adjustable angles on the X, Y, and Z axes.

[0046] In this embodiment, as Figure 4 shown, the movable bracket includes a vertically connected member 42 and a horizontally connected member 43 formed integrally. The vertically connected member 42 is provided with mounting holes. The mounting holes can extend along the vertical direction to form long strip-shaped holes, or multiple heights of mounting holes can be provided on the vertically connected member 42. The vertically connected member 42 can be fixed on the first conveyor belt 1 through bolts, so that the vertically connected member 42 can adjust its different positions on the first conveyor belt 1 according to actual needs, and adjust the height of the vertically connected member 42 on the first conveyor belt 1 to achieve adjustments on the Y axis and the Z axis.

[0047] The vertical connecting member 42 is connected to a specified position on the conveyor belt through mounting holes. The horizontal connecting member 43 is perpendicular to the vertical connecting member 42. A linear driving device 44, such as a linear motor, is installed on the horizontal connecting member 43. The camera 41 is connected to the linear driving device 44. The linear driving device 44 drives the camera 41 to move horizontally, realizing the movement on the X-axis, thereby adjusting the horizontal distance between the camera 41 and the bottle body on the first conveyor belt 1.

[0048] The adjustment of the position of the camera 41 can be determined according to the size of the bottle body to be detected, so that each shooting component 4 can face the specified position of the bottle body for shooting, facilitating subsequent detection.

[0049] During actual use, the on / off state of each shooting component 4 can be controlled according to actual needs, and one or more local positions on the bottle body can be shot according to requirements to be applicable to different detection needs.

[0050] In some embodiments, the specifications of the bottle body can be pre-entered, or the bottle bodies on the conveyor belt can be photographed by an additional camera. The size of the bottle body to be detected can be obtained through software processing. The height of the specified position on the bottle body can be determined according to the specifications / size of the bottle body, thereby automatically adjusting the position and height of each group of shooting components 4 to achieve the purpose of automatic adjustment. The software analysis process is disclosed in the prior art and will not be described in detail here.

[0051] To improve the shooting quality of the shooting component 4, a corresponding light source is matched for each group of shooting components 4. The position and irradiation angle of the light source can be determined manually in advance; in addition, the light source can also be fixed on a movable bracket and move synchronously with the movement of the shooting component 4.

[0052] The light source can be set as a square light source 5. The square light source 5 can be arranged on the side of the first conveyor belt 1 to irradiate the bottle body or the bottle mouth from the side; in addition, the light source can also be set as an annular structure light source 6. The annular structure light source 6 can be arranged directly above the first conveyor belt 1 to irradiate the surface of the first conveyor belt 1 from top to bottom to supplement light for the bottle cap position.

[0053] At the same time, as shown in Figure 2 、 Figure 3 A shielding box body 7 can also be sleeved on the first conveyor belt 1. The shielding box body 7 can be set as a black box body to avoid the influence of external light on the shooting quality. And a channel is opened at the position of each shielding box body 7 facing the first conveyor belt 1. The size of the channel is larger than the size of the bottle body. Even when the shielding box body 7 is covered on the first conveyor belt 1, the bottle body can still pass through the channel, and the normal transportation of the bottle body is not affected.

[0054] After all the photographing components 4 have completed the photographing work on the designated positions of the bottle body, the taken pictures are transmitted to the central controller of the system. The central controller is connected to each group of photographing components 4 and is used to collect the pictures taken by each group of photographing components 4. The central controller performs feature analysis on the photos of the designated positions of the bottle body based on the taken pictures, and finally obtains the bottle body quality result. The central controller is also connected to the waste discharging device 3 and is used to send execution instructions to the waste discharging device 3 to remove abnormal bottle bodies. The central controller can also be connected to an external display screen, which is used to display the taken pictures, display the results, and customize settings for parameters such as the transportation speed of the conveyor belt.

[0055] The waste discharging device 3 can be arranged behind each group of photographing components 4. After each group of photographing components 4 takes pictures and analyzes the taken photos to obtain results, the corresponding waste discharging device 3 can immediately remove the abnormal bottle bodies. It is also possible to have only one waste discharging device 3 on the entire conveyor belt. After all the photographing components 4 have finished taking pictures and combined all the taken photos to obtain the final result, the waste discharging device 3 removes the abnormal bottle bodies, and a guide rail is provided at the removal position. After the abnormal bottle bodies are removed, they are transported to a designated location for recycling through the guide rail. The waste discharging device 3 can be composed of a linear motor and a push head. The linear motor drives the push head to move, and when an abnormal bottle body is located, the bottle body can be pushed out of the first conveyor belt 1 from the side, thus achieving the removal effect. The waste discharging device 34 can calculate the time when the abnormal bottle body reaches the waste discharging device 3 based on the position of the photographing component 4 that takes pictures of the abnormal bottle body and the transportation speed of the bottle body on the first conveyor belt 1. The waste discharging device 3 can then perform the removal operation according to the calculated time. The time calculation method has been disclosed in the prior art and will not be described in detail here.

[0056] There is an outer shell 8 outside the entire system, which protects various components on the conveyor belt through the outer shell 8.

[0057] In this embodiment, there are at least three groups of photographing components 4 with different heights. One group of photographing components faces the position of the bottle cap and takes pictures of the bottle cap information on the bottle cap; one group of photographing components faces the position of the bottle mouth and takes pictures of the bottle mouth position; another group of photographing components faces the position of the bottle body and is used to take pictures of the bottle body label, so as to realize the photographing and detection of the label information on the bottle cap, whether the bottle mouth is tightened, the direction of the bottle cap and bottle mouth, the bottle body label, etc., and improve the detection efficiency and detection quality.

[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means three or more, unless otherwise specifically defined.

[0060] As described above, the above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A bottle visual inspection system, characterized in that: include: Conveyor belt, used for conveying bottles; A plurality of groups of shooting components are arranged at different positions of the conveyor belt along the transport direction of the conveyor belt, at least three groups of the shooting components have different heights from the surface of the conveyor belt, and the shooting angles of one or more groups of the shooting components face the surface of the conveyor belt, and the shooting angles of one or more groups of the shooting components face the bottle body on the conveyor belt; designated positions of the bottle body are photographed by the plurality of groups of the shooting components, and the designated positions include the bottom position, the bottle cap position, the bottle mouth position and the bottle body position.

2. The bottle visual inspection system according to claim 1, characterized in that: The shooting component comprises: camera; A movable bracket, one end of which is fixed on a designated position of the conveyor belt, and the other end of which is connected to the camera, and the movable bracket is used to adjust the position of the camera on the XYZ axis.

3. The bottle visual inspection system according to claim 2, characterized in that: The movable bracket includes an integrally formed vertical connecting member and a transverse connecting member. The vertical connecting member is provided with an installation hole. The vertical connecting member is connected to a specified position of the conveyor belt through the installation hole. The transverse connecting member is perpendicular to the vertical connecting member. A linear drive device is installed on the transverse connecting member. The camera is connected to the linear drive device, and the camera is driven to move laterally by the linear drive device.

4. The bottle visual inspection system according to claim 2, characterized in that: Also includes: A light source, wherein a position of the light source on the conveyor belt corresponds to a position of the camera on the conveyor belt.

5. The bottle visual inspection system according to claim 4, characterized in that: The light source located directly above the conveyor belt is a circular ring structure light source, and the circular ring structure light source illuminates the surface of the conveyor belt.

6. The bottle visual inspection system according to claim 1, characterized in that: The conveyor belt is covered with a shielding box, and a channel is opened in the shielding box at a position facing the conveyor belt. The size of the channel is larger than the size of the bottle body, and the channel is used for the bottle body to pass through.

7. The bottle visual inspection system according to claim 1, characterized in that: A bottle clamping device is provided at the entrance of the conveyor belt, and the bottle clamping device is used to clamp the bottle body position of the bottle body and transport the bottle body to the entrance of the conveyor belt.

8. The bottle visual inspection system according to claim 7, characterized in that: One or more than two groups of the shooting components are arranged directly below the bottle clamping device for shooting at the bottle bottom position of the bottle body.

9. The bottle visual inspection system according to claim 1, characterized in that: A waste discharge device is provided on one side of the conveyor belt. The bottles photographed by the photographing assembly are transported to the location of the waste discharge device via the conveyor belt. The waste discharge device is used to remove bottles with abnormalities in inspection.

10. The bottle visual inspection system according to claim 9, characterized in that: Also includes: The central controller is connected to each group of the shooting components and is used to collect pictures taken by each group of the shooting components; the central controller is also connected to the waste discharge device and is used to send execution instructions to the waste discharge device.

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