A bottle body detection device and its detection method

Abstract

The present invention relates to the technical field of bottle body detection, and specifically discloses a bottle body detection device, which includes a frame and an image acquisition component for acquiring image data of the bottle mouth, bottleneck, bottle body, and bottle bottom. The image acquisition component further includes an inner mouth image acquisition module, which is used to acquire image data of the inner wall position of the bottle mouth and the inner edge corners of the bottle mouth end face. This solution is used to solve the problem that the image acquisition component in the prior art cannot detect bottle body defects more comprehensively.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle detection, and particularly relates to a bottle detection device and a detection method thereof. Background Art

[0002] After the production of bottles is completed, the quality of the bottles needs to be detected before packaging. The detection of bottles has different detection methods according to different requirements. For example, in the case where the airtightness of the bottle is required to be high while the appearance and size requirements are not high, it is only necessary to focus on detecting defects that affect airtightness such as cracks, breaks, and blowouts in the bottle. When both the airtightness and appearance of the bottle have high requirements, it is necessary to detect not only whether there are defects that affect airtightness in the bottle, but also detect defects such as the shape and size specifications of the bottle, the impurity situation, and the air lines caused by molding. Regardless of the requirements, in the prior art, the defect detection of bottles is mostly achieved by visual detection combined with artificial intelligence deep learning. This detection method is based on the image data of the bottle collected by the image acquisition component of the detection device to perform defect detection. The detection device is externally connected to an industrial control computer with visual detection technology, and the industrial control computer judges the defects of the bottle according to the received image data.

[0003] To ensure the comprehensiveness of image data acquisition, it is necessary to rotate the bottle during the image data acquisition process to ensure that multiple parts of the bottle can be photographed. The specific bottle detection process is as follows: Two guide wheels on the lifting seat push the bottle up from both sides of the bottle body (the two guide wheels are parallel to the bottle body, and there is a clearance space between the two guide wheels to facilitate leaving a rotating space for the subsequent rotation of the bottle while the guide wheels support the bottle. The guide wheels can be bearings or rollers, as long as the guide wheels can rotate by themselves), until the bottle is pushed up to abut against the friction wheel directly above the two guide wheels. Due to the rotation of the friction wheel, a frictional force is generated between the friction wheel and the bottle, and this frictional force causes the bottle to rotate under the combined support of the two self-rotating guide wheels. During the rotation of the bottle, multiple image acquisition modules of the image acquisition component respectively acquire image data of the bottom, body, neck, and mouth of the bottle.

[0004] Currently, for the inspection of the bottle body, when the requirements for the bottle body are not high, the above data collection of the bottle bottom, bottle body, bottle neck and bottle mouth can basically meet the detection requirements. However, for some bottle bodies with high requirements, only the amount of image collection data of the bottle body, bottle bottom, bottle neck or bottle mouth is increased during detection to improve the detection accuracy. However, there will still be situations where the bottle body users think that the bottle body has defects such as cracks, breaks, and blown openings, which will cause problems in use. For example, some medicine bottles (referred to as medicine bottles for short) need to contain solvent-based, powder-based or granular drugs during use, and the preservation of these drugs requires extremely high sealing performance. Once the bottle body has cracks or difficult-to-detect breaks, cracks, etc., it will affect the sealing performance of the bottle body during use and the strength of the bottle body. For example, in the existing market, there has been a situation where vials used to contain vaccines were recalled in batches because cracks were found in the bottle bodies after vaccine production. In addition, some medicine bottles also need to be stored in a freeze-dried state, making the environment where the bottle body is located very harsh. Although the probability of the bottle body cracking during the freeze-drying process is extremely low, once it occurs, it will be a very serious problem because it will cause the loss of the product inside the bottle and even bring problems such as overflowing products and broken glass slag contaminating the inside of the equipment. Summary of the Invention

[0005] The present invention aims to provide a bottle body detection device to solve the problem that the image acquisition component in the prior art cannot detect bottle body defects more comprehensively.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A bottle body detection device includes a frame and an image acquisition component for collecting image data of the bottle mouth, bottle neck, bottle body and bottle bottom. The image acquisition component further includes an inner mouth image acquisition module, and the inner mouth image acquisition module is used to collect image data of the inner wall position of the bottle mouth and the inner edge corners of the bottle mouth end face.

[0008] The principle and advantages of this solution are as follows: In practical applications, by adding an inner-mouth image acquisition module, it is possible to detect both the inner wall position of the bottle mouth and the inner-edge corners of the bottle mouth end face. In the prior art, for the detection of the bottle body, since the bottle mouth is used in combination with the bottle cap during the use of the bottle, the bottle cap strengthens both the sealing performance and the strength of the bottle mouth, so it is often easily overlooked. When detecting the bottle mouth of the bottle body, basically only the defects on the outer surface of the bottle mouth are detected, and the defects on the inner wall position of the bottle mouth are not detected. Moreover, the inner-edge corners of the bottle mouth end face are even more likely to be ignored. However, since the inner-edge corners of the bottle mouth end face are located at the corner between the bottle mouth end face and the inner wall of the bottle mouth, the size here is relatively small compared to the entire bottle mouth size and is easily overlooked. In addition, for medicine bottles, the wall thickness of the bottle mouth is generally relatively thick, which increases the likelihood of the inner-edge corners of the bottle mouth end face being ignored. After research by the inventor, although the inner-edge corners of the bottle mouth end face are small, once cracks appear at the inner-edge corners of the bottle mouth end face, the sealing performance of the bottle mouth will be greatly reduced under harsh environments. And if there is dirt on the bottle mouth, the dirt is likely to enter the bottle body, thereby affecting the quality of the contents in the bottle body. This solution only adds an inner-mouth image acquisition module, which enables the originally overlooked parts to be detected and improves the comprehensiveness of detection.

[0009] Further, as an improvement, a light source is fixed on the frame. The light source is parallel to the bottle body. In the image acquisition component, the part used for image data acquisition of the bottle mouth is called the bottle-mouth image acquisition module, and the bottle-mouth image acquisition module is located in front of the bottle mouth.

[0010] Beneficial effects: Through the setting of the light source in this solution, the bottle-mouth image acquisition module acquires image data of the bottle mouth in a side-light illumination manner, making the acquired bottle-mouth image data show obvious dark areas and bright areas. There are two dark areas, and the connection line of the two dark areas is perpendicular to the connection line between the bright area and the light source. The bright area is close to the light source. Through the position settings of the bottle-mouth image acquisition module, the bottle body, and the light source in this solution, the cracks and ruptures on the surface of the bottle mouth and the bottle-mouth corners can be seen more clearly in the dark areas, and dirt and ruptures on the surface can also be accurately detected in the bright areas, improving the accuracy of detection. Compared with the prior art method of comprehensively illuminating the bottle-mouth camera with a light source placed at the bottom of the bottle body and a light source on the side of the bottle body, in this solution, after removing the bottom light source, the dark areas become darker, making the cracks in the dark areas more obvious, improving the accuracy rate of detection. At the same time, this solution saves the bottom light source and also reduces costs.

[0011] Further, as an improvement, the bottle-mouth image acquisition module includes a camera assembly and a mounting frame. The camera assembly is detachably connected to the mounting frame. The mounting frame is provided with angle adjustment holes, and the camera assembly adjusts the shooting direction through the angle adjustment holes. The mounting frame is detachably connected to the frame.

[0012] Beneficial effects: When adopting this solution, the shooting direction of the camera component can be adjusted by the adjustment and installation of the angle adjustment holes, so that when collecting image data of the bottle mouth, a better reflection effect can be obtained, which is beneficial to improving the accuracy and feasibility of detection.

[0013] Furthermore, as an improvement, the mounting rack can be adjusted in height on the machine frame, and the distance between the mounting rack and the central axis of the bottle body can also be adjusted.

[0014] Beneficial effects: Through the position adjustment function of the mounting rack in this solution, the shooting position of the bottle mouth image acquisition module can also be adjusted, facilitating the adjustment of different bottle bodies to the optimal shooting position.

[0015] Furthermore, as an improvement, it further includes a rotating component installed on the machine frame. The rotating component includes a lifting seat and a friction wheel. Two rotatable guide wheels are connected to the lifting seat. There is a clearance space between the two guide wheels. The rotating component also includes a vertical sliding frame and a driver. The vertical sliding frame is vertically slidably connected to the machine frame. The friction wheel is rotatably connected to the vertical sliding frame. After the friction wheel rises to the designed position, the driver drives the friction wheel to rotate.

[0016] Beneficial effects: In the existing bottle body detection, the bottle bodies to be detected are continuously conveyed forward by a rotary conveyor. During the conveying process of the bottle bodies, they are quickly jacked up by the lifting seat to the position of the friction wheel for rotation detection. If the detection speed of the bottle bodies is too slow, it will cause the detection of the bottle bodies to become the bottleneck of production and affect the production efficiency; and if the detection speed is increased, such as making the bottle body detection only take a few seconds or even about 1 second, although the starting point of this method is to improve the detection speed, in actual verification, it is found that this method is very likely to cause the bottle bodies to fall. Some bottle bodies fall off from the two guide wheels during the rising process before detection, and some bottle bodies will also fall off during the descending process even after the detection is completed, resulting in a sudden increase in the rejection rate of the bottle bodies.

[0017] Through in-depth research by the inventor, it is found that whether the bottle bodies are prone to falling during the rising stage or the falling stage has a great relationship with the rapid lifting and lowering of the lifting seat. The rapid jacking of the bottle bodies by the guide wheels on the lifting seat will cause the smooth bottle bodies to have a tendency to be thrown upward due to the sudden upward supporting force (resulting in overweight). The contact between the guide wheels themselves and the bottle bodies is line contact, and the length of the contact line is much smaller than the height of the bottle, resulting in the bottle bodies not being able to be stably placed on the guide wheels and falling; and when the bottle bodies fall after the detection is completed, the falling speed of the lifting seat is higher than the falling speed of the bottle bodies, and the bottle bodies are prone to being in a weightless state, resulting in the problem that the bottle bodies still cannot be stably placed on the guide wheels and finally are also prone to falling.

[0018] In this solution, before the bottle body is detected, the friction wheel is in the lowest position under its own gravity and the gravity of the vertical sliding frame. When the bottle body needs to be detected, the bottle body is driven by the lifting seat to rise. After the lifting seat rises slightly, the bottle body on the lifting seat abuts against the bottom of the friction wheel until the bottle body pushes the friction wheel up to the designed position. At this time, the driver drives the friction wheel to rotate, and the friction wheel drives the bottle body to rotate. During the rotation process, multiple image data of the bottle body are collected by the image acquisition component. Compared with the prior art, in this solution, the friction wheel can be pressed by the bottle body to rise just after the bottle body is lifted a small distance, ensuring that the bottle body to be detected is restricted within the triangular space enclosed by the friction wheel and the two guide wheels during the vast majority of the lifting stroke, greatly reducing the probability of the bottle body falling during the lifting process. After the image data of the bottle body is collected, the lifting seat descends. At this time, the friction wheel will also descend accordingly. During the descent process, the friction wheel and the bottle body fall together, which is equivalent to pressing the bottle body from the top of the bottle body, alleviating the weightlessness degree of the bottle body and reducing the probability of the bottle body being easily dropped during the falling process.

[0019] Preferably, as an improvement, the driver includes a driving motor and a driving wheel. The output end of the driving motor is fixedly connected to the driving wheel, and the driving wheel can be connected to the friction wheel through friction transmission or meshing transmission.

[0020] Beneficial effects: With the setting of the driving wheel in this solution, the rotation of the friction wheel becomes more convenient. In addition, in this solution, the driving motor is not directly installed on the friction wheel, greatly reducing the overall gravity of the friction wheel and the vertical sliding frame, and further reducing the pressure of the overall formed by the vertical sliding frame and the friction wheel on the bottle body, which is beneficial to reducing the probability of the bottle body being deformed or crushed by the friction wheel.

[0021] Preferably, as an improvement, a top rod is fixedly connected to the lifting seat, and the top rod can abut against the vertical sliding frame.

[0022] Beneficial effects: When adopting this solution, during the process of the lifting seat driving the bottle body to rise, the top rod also rises synchronously with the lifting seat. When the bottle body abuts against the friction wheel, the top rod also abuts against the vertical sliding frame, thus ensuring that the upward force of the vertical sliding frame and the friction wheel mainly comes from the top rod, avoiding the problem that the bottle body is deformed or broken due to excessive pressure from the friction wheel and the vertical sliding frame (for soft and easily deformable bottle bodies, the deformation can be greatly reduced or even avoided, and for very brittle bottle bodies, such as glass bottles, the problem of bottle body breakage can be avoided).

[0023] Preferably, as an improvement, a height adjustment rod is arranged between the vertical sliding frame and the top rod. The height adjustment rod is installed on the vertical sliding frame or on the top rod, and the height adjustment rod can adjust the minimum distance between the top rod and the vertical sliding frame.

[0024] Beneficial effects: When adopting this solution, since the contour surface of the friction wheel in contact with the bottle body is elastic (for example, the friction wheel itself is a rubber wheel, or a rubber ring is sleeved on the outer diameter of the friction wheel), and the height adjustment rod can adjust the minimum distance between the ejector rod and the vertical sliding frame, that is, by adjusting the height adjustment rod, the minimum distance between the friction wheel (the friction wheel moves synchronously with the vertical sliding frame) and the guide wheel (the guide wheel moves synchronously with the lifting seat, and the ejector rod moves synchronously with the lifting seat) can be adjusted. After this minimum distance is adjusted, the pressure of the friction wheel on the bottle body can be adjusted (if the minimum distance is adjusted larger, the support of the bottle body on the friction wheel weakens and the support of the ejector rod on the vertical sliding frame strengthens, reducing the friction between the bottle body and the friction wheel; conversely, the force of the bottle body supporting the friction wheel increases, increasing the friction between the bottle body and the friction wheel), so as to ensure that on the basis of the bottle body not being broken, the friction between the bottle body and the friction wheel is guaranteed.

[0025] In addition, when adopting this solution, after the height adjustment rod adjusts the height, the distance between the guide wheel and the friction wheel on the lifting seat changes due to the adjustment of the height adjustment rod, and thus can adapt to the space placement requirements of new specification bottle bodies during the detection process.

[0026] In addition, due to the setting of the height adjustment rod in this solution, even if the specification of the bottle body becomes larger (that is, the bottle diameter becomes larger), the height adjustment rod can still be adjusted, so that the upward force for lifting the friction wheel still mainly comes from the ejector rod, ensuring that after the bottle body specification changes, the bottle body will not be broken due to excessive pressure.

[0027] Preferably, as an improvement, a first elastic member is provided between the vertical sliding frame and the machine frame, and the first elastic member gives a downward pulling force to the vertical sliding frame.

[0028] Beneficial effects: When adopting this solution, due to the setting of the first elastic member, the vertical sliding frame can have an active downward force to ensure that the friction wheel can be pressed tightly on the bottle body, and ensure that the friction between the friction wheel and the bottle body after rotation is sufficient to make the bottle body rotate itself.

[0029] In addition, even when the bottle body is driven by the lifting seat to descend rapidly after the bottle body detection is completed (when descending too fast, the bottle body is weightless), due to the downward pulling trend of the first elastic member on the vertical sliding frame, the friction wheel will still press on the bottle body during rapid descent, further alleviating the weightlessness degree of the bottle body during the falling process, and ensuring that the bottle body is also restricted within the enclosed space of the friction wheel and the two guide wheels during the descending process, ensuring that the bottle body will not fall from the guide wheel of the lifting seat when the lifting seat descends rapidly.

[0030] Preferably, as an improvement, a vertical buffer is further provided on the machine frame, and the buffer is used to limit the lowest position of the vertical sliding frame.

[0031] Beneficial effect: When this solution is adopted, the first elastic member gives the vertical sliding frame a downward pulling force, so that the vertical sliding frame will actively move downward after losing the resistance of the top rod. On the one hand, the buffer decelerates the downward movement speed of the vertical sliding frame, and on the other hand, it also forms a limit to the lowest position of the vertical moving frame's downward movement, so as to avoid the vertical sliding frame colliding with the bottle body to be inspected.

[0032] Preferably, as an improvement, a spacing adjustment rod is provided between the driving wheel and the frame, and the spacing adjustment rod can adjust the spacing between the driving wheel and the friction wheel.

[0033] Beneficial effect: This solution can adjust the position of the driving wheel according to the height of the friction wheel when the specifications of the bottle being tested change, ensuring that the driving wheel can always drive the friction wheel to rotate, thereby improving the practicality of this solution.

[0034] Preferably, as an improvement, the driving wheel and the friction wheel are connected by friction transmission, the driving wheel is connected to a movable frame, the movable frame is slidably connected to the frame, a second elastic member is provided between the movable frame and the frame, and the second elastic member gives the movable frame a pulling force close to the friction wheel.

[0035] Beneficial effect: When adopting this scheme, the setting of the second elastic member can make the movable frame always tend to approach the friction wheel, thereby ensuring that even if the position of the friction wheel changes slightly (for example, due to changes in the specifications of the bottle body being inspected, such as the outer diameter of the bottle body becomes 2mm larger or smaller by 2mm, the position of the friction wheel will produce a height change of 2mm when the lifting stroke of the lifting seat remains unchanged), the active wheel can always be close to the friction wheel and drive the friction wheel to rotate, thereby ensuring that the smooth progress of the bottle body inspection is not affected by the slight change in the position of the friction wheel, thereby improving the practicality of this scheme and ensuring the long-term reliability of the bottle body inspection.

[0036] In addition, when the second elastic member drives the driving wheel on the movable frame to approach the friction wheel and the driving wheel presses the friction wheel too tightly, the minimum distance between the movable frame and the friction wheel can be adjusted by screwing the distance adjustment rod, thereby adjusting the interaction force between the driving wheel and the friction wheel.

[0037] The detection method of the bottle body detection device includes the detection of the bottle mouth end face, the outer edge corners of the bottle mouth end face, the inner edge corners of the bottle mouth end face, and the inner wall of the bottle mouth; the image data of the bottle mouth is collected using side lighting, and the image data collection of the bottle mouth end face and the outer edge corners of the bottle mouth end face shares a bottle mouth image collection module, and the shooting direction of the bottle mouth image collection module is 3°-5° with the central axis of the bottle body.

[0038] Beneficial effects: In this detection method, the bottle mouth image acquisition module acquires image data in a side light illumination mode with an inclined angle. The acquired image data shows obvious dark areas and bright areas. There are two dark areas, and the line connecting the two dark areas is perpendicular to the line connecting the bright area and the light source. The bright area is close to the light source. The image data acquisition method with an inclined angle enables the cracks and ruptures on the surface of the bottle mouth and the edges of the bottle mouth to be more clearly seen in the dark areas, and dirt and ruptures on the surface can also be accurately detected in the bright areas, improving the detection accuracy.

[0039] Preferably, as an improvement, the installation position of the bottle mouth image acquisition module is offset 5 - 10 mm from the central axis of the bottle body.

[0040] Beneficial effects: This detection method can make the reflection effect better when acquiring image data, and the defects such as cracks, breaks, and scratches in the dark areas of the acquired image data are more clear and obvious, further improving the detection accuracy. Description of the Drawings

[0041] Figure 1 This is the front view of Embodiment 1 of the present invention under the frictional drive of the driving wheel and the friction wheel.

[0042] Figure 2 This is the front view of Embodiment 1 of the present invention under the belt drive of the driving wheel and the friction wheel.

[0043] Figure 3 This is the front view of Embodiment 1 of the present invention under the gear meshing drive of the driving wheel and the friction wheel.

[0044] Figure 4 is Figure 3 the top view schematic diagram of the driving wheel and the friction wheel in

[0045] Figure 5 This is the top view schematic diagram of the image acquisition component relative to the bottle body in Embodiment 1 of the present invention.

[0046] Figure 6 This is the position schematic diagram of each surface of the bottle body in Embodiment 1 of the present invention.

[0047] Figure 7 This is the axonometric drawing of the rotating component in Embodiment 2 of the present invention.

[0048] Figure 8 This is the three-dimensional structure schematic diagram of the rotating component in Embodiment 2 of the present invention from another angle.

[0049] Figure 9 is Figure 8 the structure schematic diagram of the vertical sliding frame in

[0050] Figure 10 is Figure 7Schematic diagram of the structure of the moving frame and the driving wheel in

[0051] Figure 11 This is the schematic diagram of the structure of the third embodiment of the present invention. Detailed implementation manners

[0052] The following is a further detailed description through specific implementation manners:

[0053] The reference numerals in the accompanying drawings of the specification include: frame 1, lifting seat 31, guide wheel 32, friction wheel 33, vertical sliding frame 34, driving wheel 35, ejector rod 36, height adjusting rod 37, first elastic member 38, buffer 39, moving frame 40, second elastic member 41, spacing adjusting rod 42, bottom image acquisition module 51 of the bottle, body image acquisition module 52 of the bottle, inner wall image acquisition module 53 of the bottle, inner wall image acquisition module 54 of the bottle mouth, mouth image acquisition module 55 of the bottle, light source 56, camera assembly 500, fixing frame 502, horizontal adjusting hole 5021, mounting frame 501, arc hole 5011, vertical adjusting hole 5012.

[0054] Embodiment 1

[0055] As shown in the attached Figures 1 to 6 figure, a bottle detection device includes a frame 1 and a rotating component and an image acquisition component installed on the frame 1. The rotating component includes a lifting seat 31, a friction wheel 33, a vertical sliding frame 34 and a driver. The active lifting of the lifting seat 31 can be driven by a driving mechanism for lifting, such as a vertical cylinder, a linear module arranged vertically or a conveyor for vertical transmission, etc. The driving mechanism is fixedly installed on the frame 1.

[0056] Two rotatable guide wheels 32 are connected to the top of the lifting seat 31, and there is a clearance space between the two guide wheels 32. In this embodiment, the guide wheels 32 are made of bearings.

[0057] The vertical sliding frame 34 and the friction wheel 33 are located above the lifting seat 31. The friction wheel 33 is rotatably connected to the vertical sliding frame 34. The vertical sliding frame 34 is vertically slidably connected to the frame 1. After the friction wheel 33 rises to the designed position, the driver drives the friction wheel 33 to rotate.

[0058] Specifically, the driver includes a driving motor and a driving wheel 35. The output end of the driving motor is fixedly connected to the driving wheel 35. The driving wheel 35 can be connected to the friction wheel 33 through friction transmission or meshing transmission.

[0059] In this embodiment of Figure 1 , the driving wheel 35 and the friction wheel 33 are connected through direct friction transmission. After the friction wheel 33 rises to the designed position, the friction wheel 33 abuts against the driving wheel 35, and the driving wheel 35 drives the friction wheel 33 to rotate by relying on friction.

[0060] In this embodiment, Figure 2 the driving connection between the driving wheel 35 and the friction wheel 33 is realized through a belt. After the friction wheel 33 rises to the designed position, the belt is tensioned, and then the driving wheel 35 drives the friction wheel 33 to rotate.

[0061] In this embodiment, Figure 3 the driving wheel 35 and the friction wheel 33 are in meshing transmission, and teeth meshing with the driving wheel 35 are provided on the rotating shaft of the friction wheel 33.

[0062] Combined with Figure 5 and Figure 6 , the image acquisition component includes a bottom image acquisition module 51 of the bottle, a body image acquisition module 52 of the bottle, a mouth image acquisition module 55 of the bottle, an inner wall image acquisition module 53 of the bottle, and an inner wall image acquisition module 54 of the bottle mouth. All the image acquisition modules share a light source 56. The light source 56 is fixed on the frame 1, and the light source 56 is parallel to the bottle body. The positional relationship between all the image acquisition modules and the bottle body and the light source 56 is as Figure 5 shown. Among them, the installation position of the mouth image acquisition module 55 is offset by 5 - 10 mm from the central axis of the bottle body. The shooting direction of the mouth image acquisition module 55 forms an angle of 3° - 5° with the central axis of the bottle body. The shooting direction of the inner wall image acquisition module 54 of the bottle mouth forms an angle of 20° - 40° with the central axis of the bottle body.

[0063] Taking Figure 1 as an example, the method for the detection device to perform bottle body detection is as follows:

[0064] S1. The bottle body and the friction wheel 33 rise: The driving mechanism of the rotating component is started, so that the lifting seat 31 drives the bottle body placed on two guide wheels 32 at the same time to rise. The rising bottle body pushes the friction wheel 33 to rise to the designed position so that the friction wheel 33 forms a connection with the driving wheel 35.

[0065] S2. Image acquisition is carried out while the bottle body rotates: The driving wheel 35 drives the friction wheel 33 to rotate, and the friction wheel 33 drives the bottle body to rotate. During the rotation process, the image acquisition component is started. The bottom image acquisition module 51 of the bottle uses the side light illumination method to collect image data of the bottom of the bottle. The body image acquisition module 52 of the bottle uses the backlight illumination method to collect image data of the bottle body. The mouth image acquisition module 55 of the bottle uses the side light illumination method to collect image data of the end face of the bottle mouth and the outer edge corners of the end face of the bottle mouth. The inner wall image acquisition module 53 of the bottle uses the side light illumination method to collect image data of the bottle body, the bottleneck and the body of the bottle mouth. The inner wall image acquisition module 53 of the bottle is symmetrically installed with the bottom image acquisition module 51 of the bottle. The inner wall image acquisition module 54 of the bottle mouth uses the side light illumination method to collect image data of the inner wall of the bottle mouth and the inner and outer edge corners of the end face of the bottle mouth.

[0066] When adopting this embodiment, the friction wheel 33 can be pressed to rise after the bottle body is lifted by a small distance, ensuring that the bottle body to be detected is restricted within the triangular space enclosed by the friction wheel 33 and the two guide wheels 32 during the vast majority of the lifting stroke and the falling stroke of the detected bottle body, basically avoiding the problem of the bottle body being scrapped due to the rapid lifting and lowering of the lifting seat 31, and ensuring that the increase in the bottle body scrap rate will not be brought about on the basis of the acceleration of the detection beat.

[0067] In terms of image data acquisition, in this embodiment, through the design of five groups of image acquisition modules, the all-round detection of the bottle body is realized, solving the problem of neglecting the detection of the inner edge corners of the bottle mouth end face in the prior art, filling the blank of the detection of the inner edge corners of the bottle mouth end face and the inner wall of the bottle mouth, making the defect detection of the bottle body more comprehensive and accurate; in addition, through the setting of the side light illumination and the inclined angle bottle mouth image acquisition module 55, the defect is more likely to be reflected, improving the detection accuracy.

[0068] Embodiment Two

[0069] Combined with Figures 7 to 10 , Embodiment Two is further improved on the basis of Embodiment One. Taking the improvement in the way of Embodiment Figure 1 as an example: A push rod 36 is fixedly connected to the lifting seat 31. In this embodiment, a bottom cross bar is fixed to the bottom of the vertical sliding frame 34, and a top cross bar is fixed to the top of the vertical sliding frame 34. A height adjusting rod 37 is threadedly connected to the bottom cross bar. In this embodiment, the height adjusting rod 37 is a screw rod, and the bottom of the height adjusting rod 37 can abut against the top end of the push rod 36, and the height adjusting rod 37 can adjust the height difference between the bottom of the height adjusting rod 37 and the friction wheel 33.

[0070] A first elastic member 38 is provided between the top cross bar of the vertical sliding frame 34 and the frame 1. The first elastic member 38 gives a downward pulling force to the vertical sliding frame 34. In this embodiment, the first elastic member 38 is a vertically arranged spring.

[0071] A vertical buffer 39 is further installed on the frame 1. The buffer 39 is used to limit the lowest position of the vertical sliding frame 34, and the buffer 39 is located directly below the top cross bar.

[0072] The driving wheel 35 is connected to a movable frame 40, which is laterally slidably connected to the frame 1. A drive motor that drives the driving wheel 35 is fixed to the movable frame 40. A second elastic member 41 is provided between the movable frame 40 and the frame 1. The second elastic member 41 applies a pulling force to the movable frame 40 toward the friction wheel 33. In this embodiment, the driving wheel 35 is located to the right of the friction wheel 33. The second elastic member 41 tends to move the driving wheel 35 to the left. The second elastic member 41 is also a spring. A spacing adjustment rod 42 is provided between the movable frame 40 and the frame 1. The spacing adjustment rod 42 can adjust the minimum spacing between the driving wheel 35 and the friction wheel 33. In this embodiment, the spacing adjustment rod 42 is threadedly connected to the movable frame 40, and the free left end of the spacing adjustment rod 42 can abut against the frame 1 (or the spacing adjustment rod 42 can be threadedly connected to the frame 1, and the free end of the spacing adjustment rod 42 can abut against the movable frame 40. This method is also feasible and is a conventional solution that can be thought of by those skilled in the art and is not illustrated here).

[0073] Compared with the first embodiment, this embodiment also has the following functions:

[0074] First, when the lifting base 31 drives the bottle body to rise, the push rod 36 also rises synchronously with the lifting base 31. When the bottle body contacts the friction wheel 33, the push rod 36 also supports the height adjustment rod 37 on the vertical sliding frame 34, thereby ensuring that the upward force of the vertical sliding frame 34 and the friction wheel 33 mainly comes from the push rod 36, avoiding the problem of the bottle body being deformed or broken due to excessive pressure from the friction wheel 33 and the vertical sliding frame 34 (for soft and easily deformable bottles, deformation can be greatly reduced or even avoided, and for very fragile bottles, such as glass bottles, the problem of bottle breakage can be avoided).

[0075] Second, due to the arrangement of the height adjustment rod 37 on the vertical sliding frame 34, the minimum distance between the guide wheel 32 and the friction wheel 33 on the lifting seat 31 is adjusted by the height adjustment rod 37. The space created by the distance between the friction wheel 33 and the guide wheel 32 is used to accommodate the bottle body. In other words, the existence of the height adjustment rod 37 enables the present detection device to adapt to the detection requirements of bottles with different outer diameters, thereby improving the practicality of the present device. At the same time, the pressure of the friction wheel 33 on the bottle body can be adjusted by adjusting the height adjustment rod 37, thereby ensuring that the bottle body has sufficient friction with the friction wheel 33 and reducing the probability of deformation or breakage of the bottle body. The first spring 38 is used to move the first spring 33 downwards and the second spring 35 is used to move the first spring 33 upwards and the second spring 35 is used to move the first spring 33 downwards.

[0076] Third: When the outer diameter of the bottle being inspected changes significantly, the maximum lifting stroke of the lifting seat 31 can be adjusted to adapt to the inspection requirements of the new specification of bottles; or when the maximum lifting stroke of the lifting seat 31 remains unchanged (the highest position of the friction wheel 33 is maintained), the minimum distance between the driving wheel 35 and the friction wheel 33 can be adjusted by screwing the spacing adjustment rod 42, or the distance between the guide wheel 32 and the friction wheel 33 can be adjusted by adjusting the height adjustment rod 37, thereby ensuring that the friction wheel 33 can still be pressed against the driving wheel 35 and driven by the driving wheel 35 to rotate, which can also meet the inspection requirements of the new specification of bottles, and this adjustment method is also very simple and convenient.

[0077] Example 3

[0078] Combine Figure 11 The third embodiment is improved on the basis of the second embodiment, specifically as follows: the heights of the bottle bottom image acquisition module 51, the bottle mouth image acquisition module 55, the bottle inner wall image acquisition module 53, and the bottle mouth inner wall image acquisition module 54 are all adjustable, and the distances between the bottle bottom image acquisition module 51, the bottle mouth image acquisition module 55, the bottle inner wall image acquisition module 53, and the bottle mouth inner wall image acquisition module 54 and the bottle body and the angles formed with the bottle body are all adjustable.

[0079] Specifically, in this embodiment: At least two fixing frames 502 are fixed on the frame 1. Each fixing frame 502 is provided with a transverse adjustment hole 5021. All image acquisition modules include a camera assembly 500 and a mounting frame 501. The mounting frame 501 is provided with a vertical adjustment hole 5012 and a horizontal arc-shaped hole 5011. The mounting frame 501 and the fixing frame 502 can form a fixed connection through bolts on the vertical adjustment hole 5012 and the transverse adjustment hole 5021, and the camera assembly 500 can be fixed on the arc-shaped hole 5011 of the mounting frame 501.

[0080] In this embodiment, by adjusting the installation position of the vertical adjustment hole 5012 of the mounting frame 501, the height of the camera assembly 500 is adjusted. By adjusting the installation position of the mounting frame 501 on the transverse adjustment hole 5021, the distance between the camera assembly 500 and the bottle body is adjusted. And by providing the arc-shaped hole 5011 on the mounting frame 501, it is convenient to adjust the shooting direction of the camera assembly 500.

[0081] Compared with the second embodiment, this embodiment enables the acquisition module of the image acquisition component to adjust the shooting position and shooting direction, thereby adapting to the detection requirements of different specifications of bottle bodies and improving the practicability of this solution.

[0082] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A bottle body detection device, comprising a frame and an image acquisition component for acquiring image data of the bottle mouth, bottle neck, bottle body and bottle bottom, characterized in that: The image acquisition component further includes an inner mouth image acquisition module, which is used to collect image data of the inner wall position of the bottle mouth and the inner edge corners of the bottle mouth end face; It further includes a rotating component installed on the frame. The rotating component includes a lifting seat and a friction wheel. Two rotatable guide wheels are connected to the lifting seat. There is a clearance space between the two guide wheels. The rotating component further includes a vertical sliding frame and a driver. The vertical sliding frame is vertically slidably connected to the frame. The friction wheel is rotatably connected to the vertical sliding frame. After the friction wheel rises to the designed position, the driver drives the friction wheel to rotate; The driver includes a driving motor and a driving wheel. The output end of the driving motor is fixedly connected to the driving wheel. The driving wheel can be connected to the friction wheel through friction drive or meshing drive; A spacing adjusting rod is provided between the driving wheel and the frame. The spacing adjusting rod can adjust the spacing between the driving wheel and the friction wheel. The driving wheel and the friction wheel are connected through friction drive. A moving frame is connected to the driving wheel. The moving frame is slidably connected to the frame. A second elastic member is provided between the moving frame and the frame. The second elastic member gives the moving frame a pulling force close to the friction wheel; A top rod is fixedly connected to the lifting seat, and the top rod can abut against the vertical sliding frame; A height adjusting rod is provided between the vertical sliding frame and the top rod. The height adjusting rod is installed on the vertical sliding frame or on the top rod. The height adjusting rod can adjust the minimum spacing between the top rod and the vertical sliding frame; A first elastic member is provided between the vertical sliding frame and the frame. The first elastic member gives the vertical sliding frame a downward pulling force; A vertical buffer is further provided on the frame, and the buffer is used to limit the lowest position of the vertical sliding frame.

2. The bottle body detection device according to claim 1, wherein: A light source is fixed on the frame. The light source is parallel to the bottle body. In the image acquisition component, the one used to collect image data of the bottle mouth is called the bottle mouth image acquisition module, and the bottle mouth image acquisition module is located in front of the bottle mouth.

3. The bottle body detection device according to claim 2, characterized in that: The bottle mouth image acquisition module includes a camera assembly and a mounting bracket. The camera assembly is detachably connected to the mounting bracket. Angle adjustment holes are provided on the mounting bracket. The camera assembly adjusts the shooting direction through the angle adjustment holes. The mounting bracket is detachably connected to the frame.

4. The bottle body detection device according to claim 3, wherein: The mounting bracket can be adjusted in height on the frame, and the distance between the mounting bracket and the central axis of the bottle body can also be adjusted.

5. The detection method of the bottle body detection device according to any one of claims 1-4, characterized in that, The detection of the bottle mouth includes the detection of the bottle mouth end face, the outer edge corners of the bottle mouth end face, the inner edge corners of the bottle mouth end face, and the inner wall of the bottle mouth; For the image data collection of the bottle mouth, the side light illumination method is adopted. The image data collection of the bottle mouth end face and the outer edge corners of the bottle mouth end face share one bottle mouth image acquisition module. The shooting direction of the bottle mouth image acquisition module forms an angle of 3°-5° with the central axis of the bottle body.

6. The detection method according to claim 5, wherein The installation position of the bottle mouth image acquisition module is offset 5-10 mm from the central axis of the bottle body.

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