An appearance inspection device

Abstract

This invention relates to the field of appearance inspection technology, and in particular to an appearance inspection device. An appearance inspection device includes a frame; a conveying mechanism mounted on the frame for conveying canned beverage bottles; and an inspection mechanism mounted on the frame for inspecting the appearance and markings of the canned beverage bottles conveyed by the conveying mechanism. The inspection mechanism includes a lightbox mounted above the conveying mechanism, a light source assembly disposed inside the lightbox and emitting light into the lightbox, and multiple image acquisition components mounted on the lightbox. The lightbox has a first opening and a second opening on its two side walls, respectively, arranged along the direction in which the canned beverage bottles are conveyed by the conveying mechanism. The image acquisition components are positioned at different locations within the lightbox for photographing the canned beverage bottles from different angles. A control mechanism is also mounted on the frame and electrically connected to the conveying mechanism and the inspection mechanism. The appearance inspection device provided by this invention is beneficial for improving production efficiency and reducing equipment costs.

Description

Technical Field

[0001] This invention relates to the field of appearance inspection technology, and in particular to an appearance inspection device. Background Technology

[0002] In beverage production, the inspection of the appearance and markings on canned beverage bottles is an essential step in controlling product quality, ensuring compliance with standards, and preventing substandard products from entering the market. Currently, the industry generally integrates vision inspection mechanisms into automated production equipment; however, setting up multiple vision inspection stations within a single automated production line increases the need for mechanical hardware and other components, thus raising the cost of manufacturing such automated equipment.

[0003] Furthermore, defective products detected during beverage production and those generated during factory turnover require rework. Reworked products then undergo a second inspection for appearance and markings. Currently, this inspection can only be conducted manually or using automated production equipment. However, manual inspection is only feasible when the number of reworked products is small and cannot guarantee accuracy. When the number of reworked products is large, the automated production equipment must be paused, and visual inspection stations must be used instead. This disrupts the normal production flow and reduces efficiency. These shortcomings are what those skilled in the art hope to overcome. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art. This invention provides an appearance inspection device that improves production efficiency and reduces equipment costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An appearance inspection device for inspecting the appearance and markings of canned beverage bottles, comprising:

[0007] frame;

[0008] A conveyor mechanism, mounted on a frame, is used to transport canned beverage bottles;

[0009] An inspection mechanism, mounted on a frame, is used to inspect the appearance and markings of canned beverage bottles transported by a conveyor mechanism. The inspection mechanism includes a lightbox mounted above the conveyor mechanism, a light source assembly inside the lightbox that emits light into the lightbox, and multiple image acquisition components mounted on the lightbox. The lightbox has a first opening and a second opening on its two side walls, respectively. The first and second openings are positioned along the direction in which the canned beverage bottles are transported by the conveyor mechanism. The image acquisition components are positioned at different locations within the lightbox to capture images of the canned beverage bottles from different angles.

[0010] The control mechanism is mounted on the frame and is electrically connected to the conveying mechanism and the detection mechanism, respectively.

[0011] A conveying mechanism is used to transport canned beverage bottles. The detection mechanism includes a light box, a light source assembly, and multiple image acquisition components. The light box is positioned above the conveying mechanism, with a first opening and a second opening on each side wall. These openings are aligned with the conveying direction of the mechanism, allowing the conveying mechanism to transport the canned beverage bottles through the first opening into the light box for detection. After detection, the conveying mechanism outputs the canned beverage bottles through the second opening. The light source assembly illuminates the canned beverage bottles. Multiple image acquisition components positioned at different locations within the light box allow for simultaneous image capture and detection of the canned beverage bottles from various angles, improving work efficiency.

[0012] Furthermore, the top surface of the frame is provided with an installation area; the conveying mechanism includes a conveyor belt disposed in the installation area and a conveyor belt fixing member disposed in the frame and used to fix the conveyor belt in the installation area.

[0013] Preferably, the conveyor belt is adapted to the installation area; the upper surface of the conveyor belt is higher than the top surface of the frame. This avoids the top surface of the frame blocking light, which could lead to poor imaging results.

[0014] Furthermore, the detection mechanism also includes a sensor assembly disposed at a predetermined position within the lightbox and electrically connected to the control mechanism; the sensor assembly is used to detect the canned beverage bottle and transmit a signal to the control mechanism; when the sensor assembly detects the canned beverage bottle, the control mechanism controls the conveying mechanism to stop operating and positions the canned beverage bottle at the predetermined position. Preferably, the image acquisition assembly includes a bracket disposed within the lightbox and a camera disposed on the bracket; the camera passes through the lightbox and faces the predetermined position. By setting the sensor assembly, the canned beverage bottle on the conveying mechanism stops after being transported to the predetermined position, and the canned beverage bottle is positioned at the predetermined position, facilitating subsequent photographic detection.

[0015] Furthermore, the inner wall of the light box is provided with a first diffuse reflection layer for diffuse reflection of light; the light source assembly includes a first light source element and a second light source element respectively disposed on both sides of the conveying mechanism; the first light source element and the second light source element are disposed opposite each other and located at the bottom of the light box; both the first light source element and the second light source element are U-shaped and adapted to the shape of the bottom of the light box. By setting the light source assembly at the bottom of the light box and emitting light towards the inside of the light box, the first diffuse reflection layer on the inner wall of the light box diffuses the light, making the light inside the light box uniform and forming a high shadowless light effect, which is beneficial to improving the lighting effect on canned beverage bottles, thereby improving the image quality.

[0016] Furthermore, the detection mechanism also includes a first lifting door assembly disposed at the first opening and a second lifting door assembly disposed at the second opening;

[0017] The first lifting door assembly includes a first door panel slidably disposed outside the light box and used to cover the first opening, and a first drive unit electrically connected to the control mechanism and used to drive the first door panel to move up and down; the second lifting door assembly includes a second door panel slidably disposed outside the light box and used to cover the second opening, and a second drive unit electrically connected to the control mechanism and used to drive the second door panel to move up and down.

[0018] Preferably, the first lifting door assembly further includes a third sensor disposed at the bottom of both sides of the first opening and electrically connected to the control mechanism, for detecting canned beverage bottles and transmitting signals to the control mechanism; the control mechanism controls the first drive unit to drive the first door panel to perform lifting and lowering movements;

[0019] The second lifting door assembly also includes a fourth sensor, which is respectively disposed at the bottom of both sides of the second opening and electrically connected to the control mechanism, for detecting canned beverage bottles and transmitting signals to the control mechanism; the control mechanism controls the second drive unit to drive the second door panel to move up and down. By setting the third and fourth sensors, it is confirmed whether there are any objects interfering at the first and second openings. Subsequently, the control mechanism controls the first drive unit to drive the first door panel to move up and down, and the control mechanism controls the second drive unit to drive the second door panel to move up and down, thereby improving the automation level of the appearance detection device.

[0020] Preferably, both the side of the first door panel facing the interior of the light box and the side of the second door panel facing the interior of the light box are provided with a second diffuse reflection layer for diffuse reflection of light. When the first drive unit moves the first door panel downwards to cover the first opening, and the second drive unit moves the second door panel downwards to cover the second opening, the first door panel, the second door panel, and the light box form a sealed space. The second diffuse reflection layer provided on the side of the first door panel facing the interior of the light box and the side of the second door panel facing the interior of the light box makes the light inside the light box more uniform, further improving the lighting effect on the canned beverage bottle, thereby improving the image quality.

[0021] Furthermore, the appearance inspection device also includes a display mechanism mounted on the frame for displaying inspection results; the display mechanism includes a mounting bracket mounted on the frame and a display mounted on the mounting bracket; the display is electrically connected to the control mechanism. By setting up a display mechanism, the inspection results of the product can be displayed intuitively, which is beneficial for staff to make timely adjustments to deficiencies in the production process.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. An appearance inspection device of the present invention includes a conveying mechanism for transporting canned beverage bottles. The inspection mechanism includes a light box, a light source assembly, and multiple image acquisition components. The light box is positioned above the conveying mechanism, with a first opening and a second opening on each of its two side walls, arranged along the conveying direction of the mechanism. This allows the conveying mechanism to transport the canned beverage bottles from the first opening into the light box for inspection. After inspection, the conveying mechanism outputs the canned beverage bottles from the second opening. By using multiple image acquisition components positioned at different locations within the light box, the canned beverage bottles can be photographed from various angles. Simultaneous image acquisition by multiple image acquisition devices improves work efficiency. The appearance inspection device is suitable for inspecting reworked products with appearance defects. Reworked products do not need to be inspected in automated production equipment, thus avoiding disruption to the normal production process and improving production efficiency.

[0024] 2. The appearance inspection device is an independent module that can be used in conjunction with existing automated equipment, solving the problem of high costs associated with setting up multiple vision inspection stations in existing automated production equipment.

[0025] 3. By setting a first diffuse reflection layer on the inner wall of the light box, the light source component is located at the bottom of the light box and emits light towards the inside of the light box. The first diffuse reflection layer diffuses the light, making the light inside the light box uniform and forming a high shadowless light effect, which is beneficial to improving the lighting effect and imaging quality of canned beverage bottles, thereby improving the detection accuracy. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an appearance inspection device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the appearance inspection device according to an embodiment of the present invention from another angle;

[0028] Figure 3 This is a partial structural schematic diagram of an appearance inspection device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the light box in an appearance inspection device according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the light source assembly in an appearance inspection device according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the first lifting door assembly and the second lifting door assembly in an appearance inspection device according to an embodiment of the present invention.

[0032] [Explanation of reference numerals in the attached drawings] 1. Frame; 11. Installation area; 2. Conveying mechanism; 21. Conveyor belt; 3. Detection mechanism; 31. Light box; 311. First opening; 312. Second opening; 32. Light source assembly; 321. First light source element; 3211. First substrate; 3212. First light strip; 322. Second light source element; 3221. Second substrate; 3222. Second light strip; 33. First image acquisition assembly; 34. Second image acquisition assembly; 35. Third image acquisition assembly; 36. Sensor assembly; 37. First lifting door assembly; 37 1. First door panel; 372. First drive unit; 3721. First linear slider; 3722. First connecting frame; 3723. First mounting frame; 3724. First cylinder; 375. Third sensor; 38. Second lifting door assembly; 381. Second door panel; 382. Second drive unit; 3821. Second linear slider; 3822. Second connecting frame; 3823. Second mounting frame; 3824. Second cylinder; 385. Fourth sensor; 4. Control mechanism; 41. Industrial computer; 5. Display mechanism; 51. Mounting bracket; 52. Display. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 2 This invention provides an appearance inspection device for inspecting the appearance and markings of canned beverage bottles. The appearance inspection device includes a frame 1, a conveying mechanism 2, an inspection mechanism 3, a control mechanism 4, and a display mechanism 5. The conveying mechanism 2 is mounted on the frame 1 and is used to transport canned beverage bottles. The inspection mechanism 3 is mounted on the frame 1 and is used to inspect the appearance and markings of the canned beverage bottles transported by the conveying mechanism 2. The control mechanism 4 includes an industrial computer 41, which is mounted on the frame 1 and electrically connected to both the conveying mechanism 2 and the inspection mechanism 3. The display mechanism 5 is mounted on the frame 1 and electrically connected to the control mechanism 4, and is used to display the inspection results.

[0035] The top surface of the frame 1 has an installation area 11 for mounting the conveying mechanism 2 on the frame 1. The conveying mechanism 2 includes a conveyor belt 21 and at least two conveyor belt fixing members (not shown); the conveyor belt 21 is disposed within the installation area 11; the conveyor belt fixing members are disposed on the frame 1 and are used to fix the conveyor belt 21 within the installation area 11. Preferably, the conveyor belt 21 is adapted to the installation area 11; the upper surface of the conveyor belt 21 is higher than the top surface of the frame 1. In this embodiment, the upper surface of the conveyor belt 21 is 1 mm higher than the top surface of the frame 1 to avoid the top surface of the frame 1 blocking light and resulting in poor imaging effect.

[0036] Please refer to the following: Figure 3The detection mechanism 3 includes a light box 31, a light source assembly 32, multiple image acquisition components, a sensor assembly 36, a first lifting door assembly 37, and a second lifting door assembly 38. The light box 31 is mounted above the conveyor mechanism 2. The light source assembly 32 is located inside the light box 31 and emits light into the light box 31 to illuminate the canned beverage bottles. The sensor assembly 36 is located inside the light box 31 and at a set position. The sensor assembly 36 includes a first sensor and a second sensor respectively located on both sides of the conveyor belt 21. The sensor assembly 36 is electrically connected to the control mechanism 4 and is used to detect the canned beverage bottles and transmit signals to the control mechanism 4. When the sensor assembly 36 detects a canned beverage bottle, the control mechanism 4 controls the conveyor mechanism 2 to stop running and positions the canned beverage bottle at the set position for subsequent photographic detection. Multiple image acquisition components are mounted on the light box 31 and positioned at different locations within the light box 31 to photograph the canned beverage bottles from different angles. Specifically, the image acquisition component includes a bracket and a camera; the bracket is mounted on the outer wall of the light box 31; the camera is mounted on the bracket and passes through the light box 31, with the camera facing a set position.

[0037] In this embodiment, the detection mechanism 3 includes a first image acquisition component 33, a second image acquisition component 34, and a third image acquisition component 35. The first image acquisition component 33 is disposed on the top of the lightbox 31 and is used to photograph the top surface of the canned beverage bottle. The second image acquisition component 34 is disposed on one side of the lightbox 31 and is used to photograph one side of the canned beverage bottle. The third image acquisition component 35 is disposed on the other side of the lightbox 31 and is opposite to the second image acquisition component 34, and is used to photograph the other side of the canned beverage bottle. The appearance detection device can simultaneously photograph the appearance and characters of the canned beverage bottle from three different directions, greatly improving the working efficiency of the appearance detection device. In other embodiments, the detection mechanism 3 can also reduce or add image acquisition components according to actual needs, and is not limited thereto.

[0038] Please refer to the following: Figure 4 The lightbox 31 has a first opening 311 and a second opening 312 on its two side walls, respectively. The first opening 311 and the second opening 312 are arranged along the direction in which the conveying mechanism 2 transports the canned beverage bottles, allowing the conveying mechanism 2 to transport the canned beverage bottles from the first opening 311 into the lightbox 31 for photographic inspection. After the photographic inspection is completed, the conveying mechanism 2 outputs the canned beverage bottles from the second opening 312. Preferably, the inner wall of the lightbox 31 is provided with a first diffuse reflection layer for diffuse reflection of light. In this embodiment, the first diffuse reflection layer is a white diffuse reflection paint layer coated on the inner wall of the lightbox 31.

[0039] Please refer to the following: Figure 5The light source assembly 32 includes a first light source element 321 and a second light source element 322. The first light source element 321 and the second light source element 322 are respectively disposed on both sides of the conveying mechanism 2. The first light source element 321 and the second light source element 322 are arranged opposite each other and located at the bottom of the light box 31. Preferably, the first light source element 321 and the second light source element 322 are both in the shape of a "U" and are adapted to the shape of the bottom of the light box 31. The light source assembly 32 emits light towards the interior of the light box 31. The first diffuse reflection layer on the inner wall of the light box 31 diffuses the light, making the light inside the light box 31 uniform and forming a high shadowless light effect, which is beneficial to improving the lighting effect on the canned beverage bottle, thereby improving the imaging quality.

[0040] Specifically, the first light source 321 is composed of a plurality of first light-emitting strips; in this embodiment, the first light source 321 is composed of three first light-emitting strips; the first light-emitting strip includes a first substrate 3211 and a first light strip 3212; the three first substrates 3211 are disposed on the top surface of the frame 1 and form a "U" shape; the first light strips 3212 are respectively disposed on the first substrate 3211. The second light source 322 is composed of a plurality of second light-emitting strips; in this embodiment, the second light source 322 is composed of three second light-emitting strips; the second light-emitting strip includes a second substrate 3221 and a second light strip 3222; the three second substrates 3221 are disposed on the top surface of the frame 1 and form a "U" shape; the second light strips 3222 are respectively disposed on the second substrate 3221.

[0041] Please refer to the following: Figure 6 The first lifting door assembly 37 is disposed at the first opening 311. The first lifting door assembly 37 includes a first door panel 371, a first drive unit 372, and a third sensor 375. The first door panel 371 is slidably disposed outside the light box 31 to cover the first opening 311. The first drive unit 372 is electrically connected to the control mechanism 4 and is used to drive the first door panel 371 to move up and down. The third sensor 375 is disposed at the bottom of both sides of the first opening 311 and is electrically connected to the control mechanism 4. It is used to detect canned beverage bottles and transmit signals to the control mechanism 4. The third sensor 375 detects whether there are canned beverage bottles at the first opening 311, and the control mechanism 4 controls the first drive unit 372 to drive the first door panel 371 to move up and down.

[0042] Specifically, the first drive unit 372 includes two first linear sliders 3721, a first connecting frame 3722, a first mounting frame 3723, and a first cylinder 3724; the first linear sliders 3721 are respectively disposed on both sides of the first opening 311; the two sides of the first connecting frame 3722 are respectively connected to the sliders on the first linear sliders 3721; the first mounting frame 3723 is disposed on the top of the light box 31 and located above the first opening 311; the first cylinder 3724 is disposed on the first mounting frame 3723, and the output end of the first cylinder 3724 is connected to the top of the first connecting frame 3722; the first cylinder 3724 is electrically connected to the control mechanism 4.

[0043] The second lifting door assembly 38 is disposed at the second opening 312; the second lifting door assembly 38 includes a second door panel 381, a second drive unit 382, ​​and a fourth sensor 385; the second door panel 381 is slidably disposed outside the light box 31 to cover the second opening 312; the second drive unit 382 is electrically connected to the control mechanism 4 to drive the second door panel 381 to move up and down; the fourth sensor 385 is disposed at the bottom of both sides of the second opening 312 and is electrically connected to the control mechanism 4 to detect canned beverage bottles and transmit signals to the control mechanism 4; the fourth sensor 385 detects whether there are canned beverage bottles at the second opening 312, and the control mechanism 4 controls the second drive unit 382 to drive the second door panel 381 to move up and down.

[0044] Specifically, the second drive unit 382 includes two second linear sliders 3821, a second connecting frame 3822, a second mounting frame 3823, and a second cylinder 3824; the second linear sliders 3821 are respectively disposed on both sides of the second opening 312; the two sides of the second connecting frame 3822 are respectively connected to the sliders on the second linear sliders 3821; the second mounting frame 3823 is disposed on the top of the light box 31 and located above the second opening 312; the second cylinder 3824 is disposed on the second mounting frame 3823, and the output end of the second cylinder 3824 is connected to the top of the second connecting frame 3822; the second cylinder 3824 is electrically connected to the control mechanism 4.

[0045] Preferably, both the side of the first door panel 371 facing the interior of the light box 31 and the side of the second door panel 381 facing the interior of the light box 31 are provided with a second diffuse reflection layer for diffuse reflection of light. In this embodiment, the second diffuse reflection layer is a white diffuse reflection paint layer coated on the side of the first door panel 371 facing the interior of the light box 31 and the side of the second door panel 381 facing the interior of the light box 31. When the first driving unit 372 moves the first door panel 371 downward to cover the first opening 311, and the second driving unit 382 moves the second door panel 381 downward to cover the second opening 312, the second diffuse reflection layers on the side of the first door panel 371 facing the interior of the light box 31 and the side of the second door panel 381 facing the interior of the light box 31 make the light inside the light box 31 more uniform, further improving the lighting effect on the canned beverage bottle, improving the imaging quality, and thus improving the detection accuracy.

[0046] The display mechanism 5 includes a mounting bracket 51 and a display 52. ​​The mounting bracket 51 is mounted on the frame 1. The display 52 is mounted on the mounting bracket 51 and is electrically connected to the control mechanism 4 to display the test results. Operators can visually see the product's testing structure through the display 52, which helps them to promptly address any deficiencies in the production process.

[0047] In use, staff place canned beverage bottles onto conveyor belt 21, which transports the bottles through the first opening 311 into the lightbox 31. When the bottles reach the set position, sensor assembly 36 detects them and transmits a signal to control mechanism 4. Control mechanism 4 then stops conveyor belt 21, positioning the bottles at the set location. Subsequently, third sensor 375 and fourth sensor 385 detect whether there are any objects interfering with the first opening 311 and the second opening 312, respectively. If there are no objects interfering with the first opening 311 and the second opening 312, the first drive unit 372 moves the first door panel 371 downwards to cover the first opening 311, and the second drive unit 382 moves... The second door panel 381 moves downwards and covers the second opening 312. At this time, under the illumination of the light source assembly 32, the first image acquisition assembly 33, the second image acquisition assembly 34, and the third image acquisition assembly 35 respectively capture images of the canned beverage bottle located at the set position from different angles. The images captured by the first image acquisition assembly 33, the second image acquisition assembly 34, and the third image acquisition assembly 35 are detected and processed by the industrial control computer 41 of the control mechanism 4. Finally, after the inspection is completed, the first drive unit 372 drives the first door panel 371 to move upwards, the second drive unit 382 drives the second door panel 381 to move upwards, the conveyor belt 21 continues to run, and the inspected canned beverage bottle is output through the second opening 312. The display 52 shows the inspection results. The appearance inspection device is small in size and easy to transport; it is also suitable for inspecting reworked products with defective appearances. Reworked products do not need to be inspected in automated production equipment, which can avoid affecting the normal production process and improve production efficiency.

[0048] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. An appearance inspection device for inspecting the appearance and characters on canned beverage bottles, characterized in that, Including: Frame (1); Transfer mechanism (2), arranged on the frame (1) for conveying canned beverage bottles; Detection mechanism (3), arranged on the frame (1) for detecting the appearance and characters of the canned beverage bottles conveyed by the transfer mechanism (2); the detection mechanism (3) includes a light box (31) covering the transfer mechanism (2) above, a light source component (32) arranged in the light box (31) and emitting light towards the inside of the light box (31), and a plurality of image acquisition components installed on the light box (31); first openings (311) and second openings (312) are respectively formed on two side walls of the light box (31); the first openings (311) and the second openings (312) are arranged along the direction of the transfer mechanism (2) for conveying canned beverage bottles; the image acquisition components are arranged at different positions of the light box (31) for photographing the canned beverage bottles from different positions; And Control mechanism (4), arranged on the frame (1), electrically connected to the transfer mechanism (2) and the detection mechanism (3) respectively; The inner wall of the light box (31) is provided with a first diffuse reflection layer for diffuse reflection of light; the light source component (32) includes a first light source part (321) and a second light source part (322) respectively arranged on two sides of the transfer mechanism (2); the first light source part (321) and the second light source part (322) are arranged oppositely and located at the bottom of the light box (31); both the first light source part (321) and the second light source part (322) are in a "U" shape and are adapted to the shape of the bottom of the light box (31); The detection mechanism (3) further includes a first lifting door component (37) arranged at the first opening (311) and a second lifting door component (38) arranged at the second opening (312); The first lifting door component (37) includes a first door panel (371) slidably arranged outside the light box (31) and used for covering the first opening (311), and a first driving unit (372) electrically connected to the control mechanism (4) and used for driving the first door panel (371) to perform lifting motion; the second lifting door component (38) includes a second door panel (381) slidably arranged outside the light box (31) and used for covering the second opening (312), and a second driving unit (382) electrically connected to the control mechanism (4) and used for driving the second door panel (381) to perform lifting motion; The first lifting door component (37) further includes third sensors (375) respectively arranged at the bottoms on two sides of the first opening (311) and electrically connected to the control mechanism (4) for detecting the canned beverage bottles and transmitting signals to the control mechanism (); the control mechanism (4) controls the first driving unit (372) to drive the first door panel (371) to perform lifting motion; Specifically, the first drive unit (372) includes two first linear sliders (3721), a first connecting frame (3722), a first mounting frame (3723), and a first cylinder (3724); the first linear sliders (3721) are respectively disposed on both sides of the first opening (311); the two sides of the first connecting frame (3722) are respectively connected to the sliders on the first linear sliders (3721); the first mounting frame (3723) is disposed on the top of the light box (31) and located above the first opening (311); the first cylinder (3724) is disposed on the first mounting frame (3723), and the output end of the first cylinder (3724) is connected to the top of the first connecting frame (3722); the first cylinder (3724) is electrically connected to the control mechanism (4); The second lifting door assembly (38) also includes a fourth sensor (385) which is respectively disposed at the bottom of both sides of the second opening (312) and electrically connected to the control mechanism (4), for detecting canned beverage bottles and transmitting signals to the control mechanism (4); the control mechanism (4) controls the second drive unit (382) to drive the second door panel (381) to move up and down; Specifically, the second drive unit (382) includes two second linear sliders (3821), a second connecting frame (3822), a second mounting frame (3823), and a second cylinder (3824); the second linear sliders (3821) are respectively disposed on both sides of the second opening (312); the two sides of the second connecting frame (3822) are respectively connected to the sliders on the second linear sliders (3821); the second mounting frame (3823) is disposed on the top of the light box (31) and located above the second opening (312); the second cylinder (3824) is disposed on the second mounting frame (3823), and the output end of the second cylinder (3824) is connected to the top of the second connecting frame (3822); the second cylinder (3824) is electrically connected to the control mechanism (4).

2. The appearance inspection device according to claim 1, characterized in that, The top surface of the frame (1) is provided with an installation area (11); the conveying mechanism (2) includes a conveyor belt (21) disposed in the installation area (11) and a conveyor belt fixing member disposed in the frame (1) for fixing the conveyor belt (21) in the installation area (11).

3. The appearance inspection device according to claim 2, characterized in that, The conveyor belt (21) is adapted to the installation area (11); the upper surface of the conveyor belt (21) is higher than the top surface of the frame (1).

4. The appearance inspection device according to claim 1, characterized in that, The detection mechanism (3) further includes a sensor assembly (36) set in a predetermined position inside the light box (31) and electrically connected to the control mechanism (4); the sensor assembly (36) is used to detect the canned beverage bottle and transmit the signal to the control mechanism (4); when the sensor assembly (36) detects the canned beverage bottle, the control mechanism (4) controls the conveying mechanism (2) to stop running and positions the canned beverage bottle at the predetermined position.

5. The appearance inspection device according to claim 4, characterized in that, The image acquisition component includes a bracket set on the light box (31) and a camera set on the bracket; the camera passes through the light box (31) and faces the set position.

6. The appearance inspection device according to claim 1, characterized in that, The first door panel (371) facing the inside of the light box (31) and the second door panel (381) facing the inside of the light box (31) are both provided with a second diffuse reflection layer for diffuse reflection of light.

7. The appearance inspection device according to claim 1, characterized in that, The appearance inspection device also includes a display mechanism (5) mounted on the frame (1) for displaying the inspection results; the display mechanism (5) includes a mounting bracket (51) mounted on the frame (1) and a display (52) mounted on the mounting bracket (51); the display (52) is electrically connected to the control mechanism (4).

Images