Finished egg defect detection apparatus

Abstract

This utility model discloses a defect detection device for finished eggs, including a frame on which a vision inspection system is mounted. The vision inspection system includes a tunnel light source assembly that provides illumination. A left camera, a right camera, a front camera, and a rear camera are mounted on the tunnel light source assembly via a combined bracket to photograph and image the finished eggs to be inspected. A regional sensor is mounted on the tunnel light source assembly to identify the position of the finished eggs. Behind the vision inspection system is a multi-channel rejection system consisting of a good-quality channel, a small-defect channel, and a large-defect channel. A belt conveyor device carrying the finished eggs to be inspected is mounted on the frame. This novel structure uses a vision inspection system to photograph and image the shape of the finished eggs, comparing the images with standard qualified finished product images to screen for defective eggs, thus improving efficiency and meeting the needs of modern production.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing technology of intelligent detection equipment, and in particular to a defect detection device for finished eggs. Background Technology

[0002] Finished eggs refer to spiced tea eggs, sauce eggs, red-glazed eggs, and preserved eggs, etc. The production methods of these finished eggs are mostly traditional processes of soaking and heating hard-boiled eggs with broken shells or peeled hard-boiled eggs in juice. Since some damage may occur during the production process, the finished eggs need to be screened to check for abnormalities such as cracks and shapes. Eggs of different grades are then graded and packaged.

[0003] Traditional manual visual inspection methods are inefficient and rely heavily on operator experience, making them unsuitable for modern high-speed production lines and prone to missing minor defects. Therefore, defective products still end up in the finished product mix, and the high labor intensity makes them unsuitable for large-scale inspection.

[0004] Chinese Patent Publication (Announcement) No.: CN220983164U, Patent Title: A Non-destructive Testing Device for the Quality of Preserved Eggs. It discloses the technical solution of "

[0006] A non-destructive testing device for the quality of preserved eggs, including a mounting frame, one end of which is provided with a feeding platform, and the other end is an inclined surface, on which a sorting plate is rotatably mounted. At the same time, a notch is opened in the middle of the mounting frame, a conveyor belt is installed in the notch, and a testing device is installed above the conveyor belt. The testing device is mounted on the mounting frame." It achieves the technical effect of "

[0012] The beneficial effect of this utility model is... to ensure that the quality of preserved eggs can be screened without damaging them, which greatly improves the production efficiency."

[0005] However, it uses a low-field nuclear magnetic resonance imaging module to create an image of the internal structure of finished eggs and compares it with the image of a standard qualified finished egg to screen for substandard eggs. It cannot screen for abnormalities such as the shape of the finished eggs. The market demands a new type of equipment capable of screening finished eggs for their shape. Utility Model Content

[0006] The purpose of this invention is to provide a defect detection device for finished eggs to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a finished egg defect detection device, comprising a frame as the basic support of the device, characterized in that: a vision detection system is provided on the frame, the vision detection system includes a tunnel light source assembly that provides a light source for illumination, a left camera, a right camera, a front camera and a rear camera are mounted on the tunnel light source assembly via a combined bracket to take pictures of the finished eggs to be inspected, a regional sensor is installed on the tunnel light source assembly to identify the position of the finished eggs, a multi-channel rejection system consisting of a good product channel, a small defect channel and a large defect channel is provided behind the vision detection system; and a belt conveyor device for carrying the finished eggs to be inspected is installed on the frame.

[0008] Compared with the existing technology, the advantages of this utility model are: this new structure uses a visual inspection system to photograph and image the shape of the finished eggs, and compares them with the images of standard qualified finished products to screen out substandard eggs, thereby improving efficiency and meeting the needs of modern production.

[0009] As an improvement of this utility model, the tunnel light source assembly is provided with a flip-up operating window for maintenance and repair. The purpose of this design is that this flip-up operating window can be flexibly opened according to different scenarios such as installation and debugging, daily maintenance, and component inspection. It allows for convenient access to internal components without disassembling the overall structure, significantly reducing the difficulty of initial equipment installation and debugging, while also improving the efficiency of later maintenance and reducing downtime caused by inconvenient operation.

[0010] As an improvement of this utility model, the belt conveyor device includes a stepper motor as a power source and a conveyor belt for directly placing the finished eggs to be inspected. The purpose of this design is to use a closed-loop stepper motor to track the product position in real time.

[0011] As an improvement of this utility model, the bottom surface of the conveyor belt is provided with a pressure roller to press the conveyor belt tight. The purpose of this design is to prevent the conveyor belt from slipping and spinning idly.

[0012] As an improvement of this utility model, the multi-channel rejection system uses air nozzles to blow finished eggs into various channels. The purpose of this design is to create a multi-channel rejection system comprising a good product channel, a small defect channel, and a large defect channel, which are then blown into their respective channels by the designated air nozzles.

[0013] As an improvement of this utility model, the air outlet of the jet nozzle is a flat air outlet, the air inlet of the jet nozzle is a circular air inlet, and the body of the jet nozzle is an arc-shaped curve that gradually transitions from a circular to a flat shape. The purpose of this design is that conventional nozzles have significant performance shortcomings in practical applications: on the one hand, due to structural design limitations, their airflow channels are prone to local throttling, resulting in insufficient blowing volume and difficulty in meeting the equipment's airflow intensity requirements, affecting the accuracy of product rejection; on the other hand, conventional nozzles are mostly made of ordinary plastic, and the stress-bearing parts are weakly designed. Under high-frequency blowing operations and the vibration environment of the production line, they are prone to structural wear, cracking, or even breakage, resulting in a short service life and requiring frequent downtime for replacement, increasing equipment maintenance costs and the risk of production interruption. The jet nozzle provided by this invention, by optimizing the airflow channel structure and gradually transitioning from a circular to a flat shape, effectively improves airflow output efficiency, significantly increases blowing volume, and can stably provide a strong airflow, ensuring that products are quickly and accurately blown off the production line. Furthermore, its arc-shaped curve design prevents cracking or breakage, reducing long-term usage costs. 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 finished egg defect detection equipment described in this utility model.

[0016] Figure 2 The three-dimensional vision inspection system described in this utility model Figure 1 .

[0017] Figure 3 The three-dimensional vision inspection system described in this utility model Figure 2 .

[0018] Figure 4 This is a perspective view of the multi-channel rejection system described in this utility model.

[0019] Figure 5 This is a perspective view of the jet nozzle described in this utility model.

[0020] Figure 6 is a perspective view of the belt conveyor device of this utility model.

[0021] Figure 7 is a perspective view of the finished egg defect detection equipment (with outer casing) described in this utility model.

[0022] Explanation of reference numerals in the attached diagram: 1. Frame; 2. Vision inspection system; 3. Tunnel light source assembly; 4. Combined support; 5. Left camera; 6. Right camera; 7. Front camera; 8. Area sensor; 9. Good product channel; 10. Small defect channel; 11. Large defect channel; 12. Belt conveyor; 13. Flip-out operation window; 14. Stepper motor; 15. Conveyor belt; 16. Pressure roller; 17. Air nozzle; 18. Flat air outlet; 19. Circular air inlet; 20. Arc curve; 21. Display screen; 22. Re-inspection channel; 23. Air tank; 25. Outer casing. Detailed Implementation

[0023] 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.

[0024] Example 1 Please refer to Figure 1 -7.

[0025] This embodiment provides a defect detection device for finished eggs, including a frame 1 that serves as the basic support for the device. A vision inspection system 2 is installed on the frame 1. The vision inspection system 2 includes a tunnel light source assembly 3 that provides a light source for illumination. The tunnel light source assembly 3 includes a tunnel-shaped cover and multiple strip light sources (not shown in the figure due to the angle) installed on the inner wall of the tunnel-shaped cover. The light from the light source can form a uniform and soft lighting environment through the diffuse reflection effect of the inner wall of the tunnel, ensuring that the light can cover the surface of the product during transportation, avoiding uneven local brightness that affects the accuracy of subsequent defect detection, and providing a stable lighting foundation for the industrial camera to capture clear product images.

[0026] In the embodiments of this utility model application, please refer to Figure 2 and Figure 3 A left camera 5, a right camera 6, a front camera 7, and a rear camera (the rear camera is not shown in the figure due to its angle, but its position is symmetrical to the front camera 7) are mounted on the tunnel light source assembly 3 via a combination bracket 4 to photograph and image the finished eggs to be inspected. This multi-camera visual inspection system 2 and tunnel light source assembly 3 can make the lighting on the product surface more uniform, and product defects can be displayed more clearly, which is beneficial for subsequent image processing.

[0027] Furthermore, the tunnel light source assembly 3 is equipped with a flip-up operation window 13 for maintenance and repair. In this embodiment, there are two sets on the left and two sets on the right, for a total of four sets. This flip-up operation window 13 can be flexibly opened according to different scenarios such as installation and debugging, daily maintenance, and component inspection. It allows for convenient access to internal components without disassembling the overall structure, greatly reducing the difficulty of debugging in the initial stage of equipment installation, while improving the efficiency of later maintenance and reducing downtime caused by inconvenient operation.

[0028] In the embodiments of this utility model application, please refer to Figure 3 A regional sensor 8 is installed on the tunnel light source assembly 3 to identify the position of the finished egg. The regional sensor 8, compared to traditional point sensors, can identify a certain detection area rather than a single contact point. This design effectively avoids sensor trigger failure caused by variations in the height and shape of the incoming product, ensuring stable detection and triggering of subsequent detection processes regardless of product position changes, thus guaranteeing the continuous and stable operation of the automated production line.

[0029] In the embodiments of this utility model application, please refer to Figure 1 and Figure 4 Following the visual inspection system 2, a multi-channel rejection system consisting of a good product channel 9, a small defect channel 10, and a large defect channel 11 is provided, along with a re-inspection channel 22. The re-inspection channel 22 is used to collect products that have not been rejected, and then re-inspect them. This multi-channel output simplifies the software algorithm, accurately rejects defective products, and reduces false rejections.

[0030] In the embodiments of this utility model application, please refer to Figure 6 A belt conveyor 12 for carrying finished eggs to be inspected is installed on the frame 1. The belt conveyor 12 includes a stepper motor 14 as a power source and a conveyor belt 15 for directly placing the finished eggs to be inspected. The stepper motor 14, which is a closed loop, can track the product position in real time.

[0031] Furthermore, the bottom surface of the conveyor belt 15 is provided with a pressing roller 16 to press the conveyor belt 15 tightly, preventing the conveyor belt 15 from slipping or spinning freely.

[0032] Furthermore, the multi-channel rejection system blows finished eggs into various channels via nozzles 17. The good product channel 9, the minor defect channel 10, and the major defect channel 11 constitute the multi-channel rejection system, which blows the eggs into their respective channels via nozzles 17.

[0033] In the embodiments of this utility model application, please refer to Figure 5The nozzle 17 has a flat outlet 18, a circular inlet 19, and an arc-shaped body 20 that gradually transitions from circular to flat. Conventional nozzles have significant performance limitations in practical applications: firstly, due to structural design constraints, their airflow channels are prone to localized throttling, resulting in insufficient blowing volume and difficulty meeting the equipment's airflow intensity requirements, thus affecting the efficiency of product removal; secondly, conventional nozzles are mostly made of ordinary plastic, and their stress-bearing parts are weakly designed, making them prone to structural wear, cracking, and even breakage under high-frequency blowing operations and assembly line vibration environments, resulting in short service life and frequent downtime for replacement, increasing equipment maintenance costs and the risk of production interruption. The nozzle 17 provided by this invention, by optimizing the airflow channel structure and gradually transitioning from circular to flat, effectively improves airflow output efficiency, significantly increases blowing volume, and stably provides a strong airflow, ensuring that products are quickly and accurately blown off the production line. In addition, its curved 20 design will not crack or even break, reducing long-term usage costs.

[0034] This utility model has the following advantages: First, it can perform visual inspection, replacing manual inspection one by one and improving inspection efficiency.

[0035] Second: It can solve the problems of limited product testing, poor testing effect, and low testing efficiency of equipment on the market.

[0036] Third: Using multi-channel air blowing rejection can accurately remove defective products and reduce false rejections.

[0037] Fourth: It enables non-destructive testing of products, with no contact during the testing process, resulting in better product quality.

[0038] 5. The self-developed belt conveyor can prevent deviation.

[0039] Sixth: It adopts a closed-loop stepper motor 14, which can track the product position in real time.

[0040] 7. The equipment is highly adaptable and easy to operate. Different types of products can be tested simply by entering a template.

[0041] 8. The use of special-type area sensors can effectively avoid sensor trigger failure caused by the varying heights and slight differences in shape of incoming products.

[0042] It should be noted that, Figure 2 and Figure 3 Two stereoscopic images are displayed from different angles for the visual inspection system 2 described in this utility model. Figure 1 and Figure 7 The difference, Figure 1The outer casing 25 and other accessories have been removed for better visibility. The gas tank 23 is responsible for supplying gas to each gas-using unit. The display screen 21 and the control system used for identification and judgment, etc., are existing technologies and will not be described in detail here.

[0043] The beneficial effects of this utility model are as follows: This novel structure uses a visual inspection system 2 to photograph and image the shape of the finished eggs, and compares them with the images of standard qualified finished products to screen out substandard eggs, thereby improving efficiency and meeting the needs of modern production.

[0044] 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.

[0045] 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.

[0046] 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. A defect detection device for finished eggs, comprising a frame (1) serving as the basic support for the device, characterized in that: A visual inspection system (2) is provided on the frame (1). The visual inspection system (2) includes a tunnel light source assembly (3) that provides a light source for illumination. A left camera (5), a right camera (6), a front camera (7), and a rear camera are mounted on the tunnel light source assembly (3) via a combined bracket (4) to take pictures of the finished eggs to be inspected. A regional sensor (8) is installed on the tunnel light source assembly (3) to identify the position of the finished eggs. A multi-channel rejection system consisting of a good product channel (9), a small defect channel (10), and a large defect channel (11) is provided behind the visual inspection system (2). A belt conveyor device (12) that carries the finished eggs to be inspected is installed on the frame (1).

2. The finished egg defect detection equipment according to claim 1, characterized in that: The tunnel light source assembly (3) is provided with a flip-out operation window (13) for maintenance and repair.

3. The defect detection equipment for finished eggs according to claim 1, characterized in that: The belt conveyor (12) includes a stepper motor (14) as a power source and a conveyor belt (15) for directly placing the finished eggs to be inspected.

4. The defect detection equipment for finished eggs according to claim 3, characterized in that: The bottom surface of the conveyor belt (15) is provided with a pressing roller (16) to press the conveyor belt (15) tightly.

5. The defect detection equipment for finished eggs according to claim 1, characterized in that: The multi-channel rejection system blows finished eggs into each channel through the nozzle (17).

6. The finished egg defect detection apparatus of claim 5, wherein: The exhaust port of the jet nozzle (17) is a flat exhaust port (18), the air inlet of the jet nozzle (17) is a circular air inlet (19), and the body of the jet nozzle (17) is an arc curve (20), gradually transitioning from a circle to a flat shape.

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