Novel automatic food screening equipment

Abstract

Novel automatic food screening equipment solves the problems of insufficient detection precision and poor interference resistance in the prior art by utilizing the combination of a line scanning image sensor and a backlight light supplementing lamp, and realizes efficient and automatic detection and sorting of food appearance quality. When semi-finished products are evenly scattered on the conveying belt through the vibrating screen, the conveying belt drives the semi-finished products to move forwards at a constant speed, when the semi-finished products move into the visual field of the line scanning image sensor, clear images of the products are obtained under light supplementing of the backlight light supplementing lamp, image information is collected and then transmitted to the image processor, and geometric dimensions and colors are analyzed and processed. And when the product does not accord with the set value domain, information is transmitted to the central processing unit to calculate the moving track and the rejecting time of the product, an instruction is sent out to open the high-pressure gas nozzle at the appointed position to spray gas, semi-finished products which do not accord with requirements are rejected, and qualified products continue to move forwards and are transferred to the next process.

Description

Technical Field

[0001] This utility model pertains to a novel automatic food sorting device. Background Technology

[0002] In the food processing industry, fried foods such as crispy pork and meatballs require screening to remove products that are irregularly shaped, undersized, have abnormal colors, or surface defects during production. Traditional screening relies on manual visual inspection, which has the following drawbacks: 1. It increases the chance of human contact with food, leading to increased contamination; 2. It results in low labor efficiency and high costs; 3. It is susceptible to subjective factors, leading to inconsistent product quality standards. Existing automated equipment mostly uses ordinary cameras or photoelectric sensors, resulting in insufficient detection accuracy and difficulty in capturing subtle defects; reflections or shadows from complex surfaces can cause misjudgments, affecting detection stability. Therefore, we have developed a new type of automatic food screening equipment based on market demand. Summary of the Invention

[0003] To overcome the above-mentioned defects, this utility model proposes a novel automatic food sorting device that uses a combination of line scan image sensor and backlight to solve the problems of insufficient detection accuracy and poor anti-interference ability in the existing technology, and to achieve rapid and accurate sorting of the shape, size, color and surface defects of fried foods such as crispy pork.

[0004] The technical solution adopted by this utility model to solve its technical problem is a novel automatic food screening device, characterized in that its structure includes a vibrating screen, a conveyor belt, a line scan image sensor, a backlight supplementary light, a high-pressure gas nozzle, a reject product collection line, a qualified product collection line, an image processor, and a central controller; the vibrating screen is adjacent to the conveyor belt, uniformly conveying the products onto the conveyor belt; a line scan image sensor is arranged below the conveyor belt; the backlight supplementary light is arranged in front of the conveyor belt to provide a clear and bright field of view for the line scan image sensor; the line scan image sensor is connected to the image processor; the image processor is connected to the central controller; the central controller is connected to the high-pressure gas nozzle; the high-pressure gas nozzle is arranged above the end of the conveyor belt; and a reject product collection line and a qualified product collection line are arranged at the end of the conveyor belt. Beneficial effects

[0005] A novel automatic food sorting device utilizes a combination of line scan image sensors and backlight supplementary lighting to solve the problems of insufficient detection accuracy and poor anti-interference ability in existing technologies, thereby achieving efficient and automated detection and sorting of food appearance quality. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a three-dimensional view of the utility model.

[0008] In the diagram, 1. Vibrating screen, 2. Conveyor belt, 3. Line scan image sensor, 4. Backlight supplement light, 5. High-pressure gas nozzle, 6. Rejected product collection line, 7. Qualified product collection line, 8. Image processor, 9. Central controller. Detailed Implementation

[0009] When the machine is started, the semi-finished products fried in the previous process are conveyed to the vibrating screen 1. Under the action of mechanical vibration, the vibrating screen 1 evenly scatters the semi-finished products onto the conveyor belt 2. The conveyor belt 2 drives the semi-finished products at a constant speed towards the qualified product collection line 7. When the semi-finished products run into the field of view of the line scan image sensor 3, the line scan image sensor 3 obtains a clear image of the product under the supplementary light of the backlight lamp 4. After collecting the image information, it transmits it to the image processor 8 for analysis and processing of geometric size and color. When the geometric size or color of the semi-finished product does not match the set value range, the image processor 8 transmits the information to the central processor 9. The central processor 9 calculates the product running trajectory and rejection time. When the product runs to the nozzle position, it issues a command to open the high-pressure gas nozzle 5 at the designated position. Under the action of the gas sprayed from the high-pressure gas nozzle 5, the semi-finished products that do not meet the requirements change their original running trajectory and fall into the rejection product collection line 6 in advance. The qualified products run to the end of the conveyor belt 2 and fall into the qualified product collection line 7 with a parabolic trajectory, and are transferred to the next process. In this way, the food sorting equipment completes the sorting of semi-finished products.

Claims

1. A novel automatic food sorting device, characterized in that, The structure includes a vibrating screen, a conveyor belt, a line scan image sensor, a backlight supplement light, a high-pressure gas nozzle, a reject product collection line, a qualified product collection line, an image processor, and a central controller. The vibrating screen is adjacent to the conveyor belt, uniformly conveying the products onto it. The line scan image sensor is located below the conveyor belt. The backlight supplement light is positioned in front of the conveyor belt to provide a clear and bright field of view for the line scan image sensor. The line scan image sensor is connected to the image processor. The image processor is connected to the central controller. The central controller is connected to the high-pressure gas nozzle. The high-pressure gas nozzle is located above the end of the conveyor belt. The end of the conveyor belt has a reject product collection line and a qualified product collection line.

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