Cut cut tobacco winnowing and separating device based on visual inspection

Abstract

The utility model discloses a cut tobacco winnowing and separating device based on visual inspection. The cut tobacco winnowing and separating device comprises an air inlet, a settling bin, a tobacco collecting box, a material receiving plate and an air return opening. The air inlet is used for conveying chain-shaped particles of cut tobacco shreds to the settling bin by fluidizing air through air supply of the fan; the settling bin comprises an image acquisition area and a defective tobacco shred removing area, the image acquisition area comprises a first camera, a second camera and a backlight plate, the first camera and the second camera are arranged in different directions respectively, the backlight plate is located on the back of the cameras, and the first camera and the second camera acquire images of the fluidized cut tobacco shreds from the longitudinal direction and the transverse direction at the same time; the material receiving plate comprises a plurality of material receiving plates which are arranged in the winnowing separation device and have different heights and different lengths, and the material receiving plates are used for receiving tobacco shreds with different sizes after winnowing separation and layering. According to the device, defective tobacco shreds in the sorting and separating process are positioned through the first camera and the second camera, and the problems of limitation of drawing tobacco shred detection, misrecognition of overlapped tobacco shred detection and the like are effectively solved.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette product testing, specifically relating to a visual inspection-based air separation device for cut tobacco shreds. Background Art

[0002] The shredding process is a crucial step in cigarette manufacturing, and the structure of the shredded tobacco significantly impacts the quality of the cigarette product. Physical properties of cigarettes generally include circumference, draw resistance, and hardness; variations in these properties affect the sensory quality of the cigarette to some extent. Maintaining the uniformity of the tobacco structure is essential for the stability of cigarette product quality.

[0003] Current research on the impact of tobacco structure on cigarette quality shows that appropriately reducing the length ratio of tobacco shreds plays a crucial role in reducing the release of harmful substances in cigarette smoke, and the length-to-width ratio of tobacco shreds is significantly correlated with cigarette quality. In addition, defective tobacco shreds, such as those from bundled strips or loose pieces, are also a significant factor affecting the quality of the cut tobacco. Therefore, there is a need to develop a separation device capable of separating and removing defective tobacco shreds.

[0004] In the prior art, the length-to-width ratio of tobacco shreds and the detection of defective tobacco shreds are usually carried out using machine vision inspection methods. For example, there is a method and system for detecting window-patterned tobacco shreds after shredding with publication number CN118154520A and a method and system for detecting broken tobacco shreds after shredding with publication number CN118032657A. The above patents use machine vision inspection to detect the shredded tobacco shreds in the incoming material to determine the defective tobacco shreds generated after shredding.

[0005] However, the above-mentioned detection methods have certain limitations in detecting rolled tobacco shreds and may misidentify overlapping tobacco shreds. Therefore, this application proposes a visual detection-based air separation device for cut tobacco shreds. Utility Model Content

[0006] To overcome the above problems, this utility model provides a visual detection-based air separation device for cut tobacco shreds, aiming to accurately locate and effectively remove defective tobacco shreds after cutting.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] The vision-based detection-based post-cut tobacco shred air separation device includes an air inlet, a settling chamber, a tobacco shred collection box, a receiving plate, and a return air inlet; wherein...

[0009] The air inlet uses a fan to fluidize and transport the chopped tobacco chain particles to the settling chamber, where they are separated by gravity and air separation speed. The return air inlet is located on the opposite side of the air inlet.

[0010] The settling chamber includes an image acquisition area and a defective tobacco removal area. The image acquisition area includes a first camera and a second camera located at different positions, as well as a backlight panel located behind the cameras. The first camera and the second camera simultaneously acquire images of the fluidized and cut tobacco from both longitudinal and transverse directions. The defective tobacco removal area is equipped with a defective tobacco removal device.

[0011] The tobacco collection box is located below the air separation device and is used to remove chain-like tobacco particles for recycling.

[0012] The receiving plate includes several receiving plates of different heights and lengths set in the air separation device, which are used to receive tobacco shreds of different sizes after air separation and stratification.

[0013] As an improvement to the above technical solution, the fan is located at the front end of the air inlet and is used to discretize the incoming tobacco shreds, so that the tobacco shreds enter the fluidized state and settle in the settling chamber.

[0014] As an improvement to the above technical solution, the air separation device has a receiving port at the bottom, and the tobacco collection box is located below the receiving port.

[0015] As an improvement to the above technical solution, the defective tobacco removal device, the receiving port, and the tobacco collection box are located in the same longitudinal direction.

[0016] As an improvement to the above technical solution, the defective tobacco removal device is a removal cylinder, which controls the outflow of high-pressure air by opening or closing the high-pressure air injection port to remove defective tobacco.

[0017] As an improvement to the above technical solution, the receiving plate is a transmission belt, which can transport tobacco shreds of different sizes while receiving them.

[0018] The beneficial effects of this utility model are:

[0019] This utility model features a simple structure, reasonable layout, and strong practicality. First, the incoming tobacco shreds are discretized through air inlets and fans, allowing them to enter a fluidized state and settle in the sedimentation chamber. This facilitates image acquisition from different angles by the camera and avoids the problems of tobacco shreds clumping and overlapping. Then, the different sizes of the tobacco chain particles during sedimentation generate different drag forces and different gravities, resulting in the separation of the tobacco chain particles. After the tobacco shreds of different sizes are separated and layered by air separation, they are received and transported. During this process, defective tobacco shreds are removed and recycled. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a three-dimensional structural diagram of the vision-based detection-based post-cut tobacco shred air separation device.

[0022] Figure 2 This is a side view of the structure of the vision-based detection-based post-cut tobacco air separation device.

[0023] Numbering on the map:

[0024] Air inlet 1, first camera 21, second camera 22, backlight 23, rejection cylinder 24, material receiving port 25, long filament receiving plate 26, short filament receiving plate 27, return air inlet 3. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1 and Figure 2 This embodiment is a vision-based detection-based air separation device for cut tobacco shreds, including an air inlet 1, a settling chamber, a tobacco shred collection box, a receiving plate, and a return air inlet 3; wherein

[0027] The air inlet 1 uses a fan to fluidize and transport the chopped tobacco chain particles to the settling chamber, where they are separated by gravity and air separation speed. The return air inlet 3 is located on the opposite side of the air inlet 1.

[0028] The settling chamber includes an image acquisition area and a defective tobacco removal area. The image acquisition area includes a first camera 21, a second camera 22 located at different positions, and a backlight panel 23 located behind the cameras. The first camera 21 and the second camera 22 simultaneously acquire images of the fluidized and cut tobacco from both longitudinal and transverse directions. The defective tobacco removal area is equipped with a defective tobacco removal device, which is a removal cylinder 24. It controls the outflow of high-pressure air by opening or closing the high-pressure air jet port to remove defective tobacco.

[0029] The tobacco collection box is located below the air separation device and is used to remove chain-like tobacco particles for recycling.

[0030] The receiving plate includes multiple receiving plates of different heights and lengths set in the air separation device, which are used to receive tobacco shreds of different sizes after air separation and stratification, such as long shred receiving plate 26 and short shred receiving plate 27.

[0031] In this embodiment, the fan is located at the front end of the air inlet 1 and is used to discretize the incoming tobacco shreds, so that the tobacco shreds enter the fluidized state and settle in the settling chamber.

[0032] In this embodiment, the air separation device has a receiving port 25 at its bottom, and the tobacco collection box is located below the receiving port 25. The defective tobacco removal device, the receiving port 25, and the tobacco collection box are located on the same longitudinal direction.

[0033] During implementation, the tobacco shreds are first circulated by a fan and enter the image acquisition area of ​​the settling zone at the air inlet 1 in a fluidized state. The first camera 21 and the second camera 22 are used to acquire and locate the tobacco shreds in different horizontal and vertical directions. When the defective tobacco shreds identified by the image reach the defective tobacco shred removal area, the removal cylinder 24 is activated. The defective tobacco shreds enter the defective tobacco shred removal receiving port 25 below due to the disturbance generated by the high-speed airflow. Normal tobacco shreds, during the air conveying process, generate different drag forces according to the different sizes of tobacco shreds, resulting in a stratification phenomenon. They fall onto tobacco shred receiving plates of different sizes and heights and are sent to the subsequent process.

[0034] In a preferred embodiment, the receiving plate is a transmission belt, which can transport tobacco shreds of different sizes while receiving them.

[0035] It should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vision-based detection-based air-separation device for cut tobacco shreds, characterized in that: Includes air inlet, settling chamber, tobacco collection box, receiving plate, and return air inlet; among which The air inlet uses a fan to fluidize and transport the chopped tobacco chain particles to the settling chamber, where they are separated by gravity and air separation speed. The return air inlet is located on the opposite side of the air inlet. The settling chamber includes an image acquisition area and a defective tobacco removal area. The image acquisition area includes a first camera and a second camera located at different positions, as well as a backlight panel located behind the cameras. The first camera and the second camera simultaneously acquire images of the fluidized and cut tobacco from both longitudinal and transverse directions. The defective tobacco removal area is equipped with a defective tobacco removal device. The tobacco collection box is located below the air separation device and is used to remove chain-like tobacco particles for recycling. The receiving plate includes several receiving plates of different heights and lengths set in the air separation device, which are used to receive tobacco shreds of different sizes after air separation and stratification.

2. The air separation device for cut tobacco shreds according to claim 1, characterized in that: The fan is located at the front end of the air inlet and is used to discretize the incoming tobacco shreds, so that the tobacco shreds enter the fluidized state and settle in the settling chamber.

3. The air-separation device for cut tobacco shreds according to claim 1, characterized in that: The air separation device has a material inlet at the bottom, and the tobacco collection box is located below the material inlet.

4. The air-separation device for cut tobacco shreds according to claim 1, characterized in that: The defective tobacco removal device, the receiving port, and the tobacco collection box are located in the same longitudinal direction.

5. The air-separation device for cut tobacco shreds according to claim 1, characterized in that: The defective tobacco removal device is a removal cylinder, which controls the outflow of high-pressure air by opening or closing the high-pressure air injection port to remove defective tobacco.

6. The air-separation device for cut tobacco shreds according to claim 1, characterized in that: The receiving plate is a transmission belt, which can transport tobacco of different sizes while receiving tobacco of different sizes.

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