Automatic detection device for surface cake of multi-camera visual detection system

Abstract

The utility model discloses a kind of automatic detection devices of multi-camera visual inspection system's face cake, including main cabinet, transmission support is provided on main cabinet, gantry support and top camera, left camera and right camera are respectively provided in the horizontal direction of top camera, left camera can photograph the left side of face cake, rear camera can photograph the back side of face cake, front camera and rear camera are respectively provided in the longitudinal direction of top camera, front camera can photograph the front side of face cake, rear camera can photograph the back side of face cake;Side light source is respectively provided in the front and back side edge of face cake, backlight is provided in the bottom surface of face cake.This new structure, it is detected by five cameras around top, and bowl light source, backlight and side light source are provided to face cake, detection effect is better, higher precision, more accurately detect the defects such as face cake surface oil stain, burnt black dot, underdone face, serious defect face cake.

Description

Technical Field

[0001] This utility model relates to the field of food inspection manufacturing technology, and in particular to an automatic dough inspection device for a multi-camera vision inspection system. Background Technology

[0002] Instant noodles are a type of ready-to-eat convenience food. During the production process, they are deep-fried, inevitably leading to blackening and charring. This affects the taste and appearance of the noodles and does not meet food safety requirements. Therefore, noodles with blackening or charring defects are considered substandard and are discarded on the instant noodle production line. Traditional inspection methods rely on manual observation on the production line, which is not only inefficient but also prone to overlooking small areas of blackening or charring, thus affecting the overall pass rate of the finished instant noodles.

[0003] Currently, there are also some detection devices on the market that use visual inspection technology to detect defects on the surface of instant noodles. For example, CN211505260U describes that "

[0066] After the instant noodle cake is formed, it is conveyed to the system by a conveyor belt. The noodle cake is conveyed to the camera detection component 8 on the detection section 7 by the conveyor section 6 and the left and right guide plates of the conveyor mechanism. The camera detection component 8 is illuminated by the lower backlight 808 and the upper ring surface light source 807 at the same time. Before the noodle cake enters the center of the light source, the industrial camera 804 is triggered by the sensor to take a picture and collect the image. The image is analyzed and processed by the software system to determine whether the noodle cake is qualified. Unqualified products are removed after taking the picture, and qualified products are conveyed to the noodle cake packaging area of ​​the next process." It uses a single camera to collect images from the top of the noodle cake and compare them. It can only detect stains suspended in the center area of ​​the noodle cake surface and cannot detect the noodle cake from multiple angles.

[0004] Therefore, the market urgently needs a device that can detect multiple other properties of the dough. Utility Model Content

[0005] The purpose of this invention is to provide an automatic dough detection device for a multi-camera vision inspection system to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: an automatic dough detection device for a multi-camera visual inspection system, comprising a main cabinet as the supporting unit, characterized in that: a transmission bracket for supporting the operation of a conveyor belt is provided on the main cabinet; a gantry bracket for mounting a bowl light source is provided above the conveyor belt; a top camera is provided in the top center area of ​​the bowl light source; a left camera and a right camera are respectively provided in the horizontal direction of the top camera; the left camera can capture the left side of the dough, and the rear camera can capture the rear side of the dough; a front camera and a rear camera are respectively provided in the vertical direction of the top camera; the front camera can capture the front side of the dough, and the rear camera can capture the rear side of the dough; side light sources are respectively provided on the front and rear sides of the dough, and a backlight source is provided on the bottom surface of the dough.

[0007] Compared with the existing technology, the advantages of this utility model are: This new structure uses five cameras (front, back, left, right, and top) to detect the dough from multiple angles, and uses bowl light source, back light source and side light source to provide light to the dough, resulting in better detection effect, higher accuracy, and more accurate detection of defects such as oil stains, burnt black spots, undercooked dough, and severely damaged dough on the surface of the dough.

[0008] As an improvement to this utility model, the left and right cameras are fixed to the main cabinet via a large rotating bracket. The purpose of this design is that the large rotating bracket can be adjusted to hold the cameras horizontally and vertically, thus optimizing the shooting angle of the pancake.

[0009] As an improvement to this utility model, the front camera and the rear camera are fixed to the main cabinet via a gantry bracket. The purpose of this design is to photograph the front and rear sides of the pancake.

[0010] As an improvement to this utility model, the large steering bracket includes a longitudinal support rod and a transverse support rod, which are fixed together by clamping blocks. The purpose of this design is that the longitudinal and transverse support rods can be positioned differently by using the clamping positions of the clamping blocks to control the position of the camera they hold.

[0011] As an improvement of this utility model, a first rejection module for removing defective dough sheets is provided in the rear half of the transmission bracket. The first rejection module includes an air nozzle, and a waste box for placing defective dough sheets is provided opposite the air nozzle. The purpose of this design is that, unlike other products, dough sheets are fragile and can easily break or crumble if not handled carefully. Therefore, the air blowing method is used to ensure the integrity of the dough sheets.

[0012] As an improvement of this utility model, a guide component to prevent the conveyor belt from deviating is installed on the transmission bracket. The guide component includes a small steering bracket, on which a guide block is installed. The purpose of this design is to first ensure the consistency of the conveyor belt, and then to ensure the consistency of the movement of the dough pieces on the conveyor belt, so that each dough piece is always illuminated by the light source and the shooting position is always in the same position, thus improving the comparison accuracy.

[0013] As an improvement of this utility model, the guide block is provided with a protruding eave to limit the conveyor belt from running off-center. The purpose of this design is that the protruding eave is an L-shaped step, and its protrusion can prevent the conveyor belt from running off-center. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0015] In the attached diagram: Figure 1 This is a perspective view of the multi-camera vision inspection system described in this utility model.

[0016] Figure 2 This is a perspective view of the automatic dough detection device described in this utility model.

[0017] Figure 3 This is a top view schematic diagram of the multi-camera vision inspection system described in this utility model.

[0018] Figure 4 This is an enlarged view of the first rejection module described in this utility model.

[0019] Figure 5 This is a three-dimensional schematic diagram of the air-blowing nozzle described in this utility model.

[0020] Figure 6 is a perspective view of the anti-deviation conveyor belt and the first rejection module described in this utility model.

[0021] Figure 7 is a perspective view of the guide component described in this utility model.

[0022] Figure 8 This is a perspective view of the large steering bracket described in this utility model.

[0023] Labeling Descriptions: 1. Main Cabinet; 2. Conveyor Belt; 3. Conveyor Bracket; 4. Bowl Light Source; 5. Gantry Bracket; 6. Top Camera; 7. Left Camera; 8. Right Camera; 9. Dough Plate; 10. Front Camera; 11. Rear Camera; 12. Side Light Source; 13. Backlight; 14. Large Steering Bracket; 15. Longitudinal Support Rod; 16. Horizontal Support Rod; 17. Clamping Block; 18. First Rejection Module; 19. Air Nozzle; 20. Waste Box; 21. Guide Assembly; 22. Small Steering Bracket; 23. Guide Block; 24. Protrusion; 25. Air Tank; 26. Oil-Gas Separator; 27. Control Panel; 28. Bottom Surface Detection Module; 29. ​​Second Rejection Module; 30. Through-beam Sensor; 31. Air Inlet; 32. Flat Air Outlet. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] Example 1 Please refer to Figure 1 -8.

[0026] This embodiment provides an automatic dough disc detection device for a multi-camera vision inspection system. It includes a main cabinet 1 supporting the entire device. The main cabinet 1 includes a support frame and a panel mounted on the support frame. A human-machine interface control panel 27 is installed on the main cabinet 1. The automatic dough disc detection device includes a multi-camera vision inspection system, a first rejection module 18 located behind it, and a bottom surface detection module 28 and a second rejection module 29. The air supply for the entire device consists of total exhaust air from an air compressor, filtered by an oil-gas separator 26, and then distributed to an air storage tank 25 before being distributed to each air-consuming unit.

[0027] In the embodiments of this utility model application, please refer to Figure 1 A transmission bracket 3 is installed on the main cabinet 1 to support the operation of the transmission belt 2. A gantry bracket 5 is installed above the transmission belt 2, on which a bowl light source 4 is mounted. A top camera 6 is installed in the center of the top of the bowl light source 4. A left camera 7 and a right camera 8 are respectively installed in the horizontal direction of the top camera 6. The left camera 7 can capture the left side of the dough 9, and the rear camera 11 can capture the rear side of the dough 9. A front camera 10 and a rear camera 11 are respectively installed in the vertical direction of the top camera 6. The front camera 10 can capture the front side of the dough 9, and the rear camera 11 can capture the rear side of the dough 9. Side light sources 12 are respectively installed on the front and rear sides of the dough 9, and a back light source 13 is installed on the bottom surface of the dough 9. By using the bowl light source 4, the side light source 12, and the back light source 13, multi-angle light sources can be provided to the dough 9, resulting in better detection effect and higher accuracy.

[0028] Furthermore, the left camera 7 and the right camera 8 are fixed to the main cabinet 1 by a large rotating bracket 14. Since the large rotating bracket 14 can adjust the left-right and high-low positions of the cameras it holds, the shooting angle of the pancake 9 can be optimized.

[0029] Furthermore, the front camera 10 and the rear camera 11 are fixed to the main cabinet 1 via the gantry bracket 5. They are used to photograph the front and rear sides of the pancake 9.

[0030] In the embodiments of this utility model application, please refer to Figure 8 The large steering bracket 14 includes a longitudinal support rod 15 and a transverse support rod 16, which are fixed together by a clamping block 17. The position of the camera clamped by the longitudinal support rod 15 and the transverse support rod 16 can be adjusted by the different clamping positions of the clamping block 17.

[0031] In the embodiments of this utility model application, please refer to Figure 4 A first rejection module 18 for rejecting defective dough cakes 9 is provided in the rear half of the transmission bracket 3. The first rejection module 18 includes an air blowing nozzle 19, and a through-beam sensor 30 is provided in front of the air blowing nozzle 19. When the sensor detects the defective dough cake 9, it controls the solenoid valve to change the air supply. The compressed air in the air blowing nozzle 19 blows the defective dough cake 9 into the waste box 20 on the opposite side for storing the defective dough cake 9. One end of the air blowing nozzle 19 is an air inlet 31, and the other end is a flat air outlet 32, which makes it easier for the compressed air to blow the dough cake 9 into the waste box 20. In the prior art, most methods use a cylinder to push the defective dough cake 9 into the waste box 20. Since the dough cake 9 is different from other products and is fragile, it is easy to break or crumble if it is not turned over properly. Therefore, the air blowing method is used to ensure the integrity of the dough cake 9.

[0032] In the embodiments of this utility model application, please refer to Figure 6 and Figure 7 The transmission support 3 is equipped with a guide component 21 to prevent the transmission belt 2 from deviating. The guide component 21 includes a small steering bracket 22, on which a guide block 23 is installed. Ensuring the consistency of the transmission belt 2 first ensures the consistent movement of the dough pieces 9 on the transmission belt 2, ensuring that each dough piece 9 is always illuminated by the light source and that its shooting position is always the same, thus improving the accuracy of comparison.

[0033] Furthermore, the guide block 23 is provided with a protruding part 24 to limit the deviation of the conveyor belt 2. The protruding part 24 is an L-shaped step, and its protrusion can prevent the conveyor belt 2 from running off course.

[0034] This embodiment provides an automatic detection device for dough cake 9 in a multi-camera vision inspection system. In normal use, when the dough cake 9 is formed and conveyed to the detection position by the conveyor belt 2, it is simultaneously illuminated by the bowl light source 4 on the top, the side light sources 12 on both sides and the back light source 13 on the bottom. The multi-camera vision inspection system, consisting of the top camera 6, the front camera 10, the rear camera 11, the left camera 7 and the right camera 8, collects images. The software system analyzes and processes the images to determine whether the dough cake 9 is qualified. Unqualified products are rejected after being photographed, and qualified products are conveyed to the packaging area of ​​the dough cake 9 in the next process.

[0035] The beneficial effects of this utility model are as follows: This new structure uses five cameras—front, back, left, right, and top—to form a multi-camera visual inspection system, which can inspect the dough 9 from multiple angles. It also uses a bowl light source 4, a back light source 13, and a side light source 12 to provide light to the dough 9, resulting in better detection effect, higher accuracy, and more accurate detection of defects such as oil stains, burnt black spots, undercooked dough, and severely damaged dough 9 on the surface of the dough 9.

[0036] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic dough inspection device for a multi-camera vision inspection system, comprising a main cabinet (1) supporting the entire device, characterized in that: The main cabinet (1) is provided with a transmission bracket (3) to support the operation of the transmission belt (2). Above the transmission belt (2) is a gantry bracket (5) on which a bowl light source (4) is installed. A top camera (6) is provided in the top center area of ​​the bowl light source (4). A left camera (7) and a right camera (8) are respectively provided in the horizontal direction of the top camera (6). The left camera (7) can photograph the left side of the dough (9), and the right camera (8) can photograph the right side of the dough (9). A front camera (10) and a rear camera (11) are respectively provided in the vertical direction of the top camera (6). The front camera (10) can photograph the front side of the dough (9), and the rear camera (11) can photograph the rear side of the dough (9). Side light sources (12) are respectively provided on the front and rear sides of the dough (9), and a backlight source (13) is provided on the bottom surface of the dough (9).

2. The automatic dough detection device of the multi-camera vision inspection system according to claim 1, characterized in that: The left camera (7) and the right camera (8) are fixed to the main cabinet (1) by a large steering bracket (14).

3. The automatic dough detection device of the multi-camera vision inspection system according to claim 1, characterized in that: The front camera (10) and the rear camera (11) are fixed to the main cabinet (1) by the gantry bracket (5).

4. The automatic dough detection device of the multi-camera vision inspection system according to claim 2, characterized in that: The large steering bracket (14) includes a longitudinal support rod (15) and a transverse support rod (16), which are fixed by a clamping block (17).

5. The automatic dough detection device of the multi-camera vision inspection system according to claim 1, characterized in that: in The rear half of the transmission bracket (3) is provided with a first rejection module (18) for rejecting defective dough pieces (9). The first rejection module (18) includes an air blowing nozzle (19), and a waste box (20) for placing defective dough pieces (9) is provided opposite the air blowing nozzle (19).

6. The automatic dough detection device of the multi-camera vision inspection system according to claim 1, characterized in that: The transmission support (3) is equipped with a guide assembly (21) to prevent the transmission belt (2) from deviating. The guide assembly (21) includes a small steering bracket (22) and a guide block (23) is installed on the small steering bracket (22).

7. The automatic dough detection device of the multi-camera vision inspection system according to claim 6, characterized in that: The guide block (23) is provided with an overhang (24) to limit the deviation of the conveyor belt (2).

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