Seaweed sheet foreign object detection device

Abstract

This utility model discloses a foreign object detection device for seaweed sheets, including a frame, a seaweed sheet detection device, and a seaweed sheet conveying device. The key feature is that the seaweed sheet conveying device includes multiple sets of drive rollers, a floating roller above each set of drive rollers, two trays spaced apart between adjacent sets of drive rollers, a motor driving the drive rollers, and a matching intermediate transmission assembly. Air blowing pipes are provided above the two trays between adjacent sets of drive rollers to blow air onto the trays. The beneficial effects of this utility model are: 1. By setting air blowing pipes in the conveying device, the seaweed sheets are pressed against the trays by air as they pass the detection position, preventing floating and ensuring the image acquisition effect of the detection device; 2. Three types of seaweed sheet detection devices are provided, which can respectively detect defects on the upper surface, lower surface, and interior of the seaweed sheets; 3. A light source air blowing pipe is provided for the light source of the seaweed sheet detection device, avoiding the influence of foreign objects on the light source.

Description

Technical Field

[0001] This utility model relates to the field of sorting equipment technology, specifically to a foreign matter detection device for seaweed sheets. Background Technology

[0002] The main ingredient of seaweed sheets is laver, which is produced through multiple processes such as washing, removing impurities, chopping, adjusting the concentration, making into cakes, drying, and peeling.

[0003] Because laver is cultivated in the ocean, it accumulates various foreign objects during its growth. Furthermore, due to limitations in current processing technology, the production of laver sheets cannot completely remove all impurities. The finished laver sheets still contain varying degrees of impurities, such as small pieces of grass, lighter shells, nylon threads, and floating debris. The presence of these impurities significantly affects the quality of the laver sheets. In addition, the laver sheets require inspection for defects such as shape and holes.

[0004] In existing technologies, the detection of the aforementioned defects is often achieved through a camera. Image data of the seaweed sheet is acquired using a camera, and then image processing is performed to detect the defects.

[0005] Because the seaweed sheets are very thin, they will float up and down in the gaps during horizontal movement, which affects image acquisition and leads to technical problems such as defects being misjudged or not being detected. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a foreign object detection device for seaweed sheets. A blower is set on each side of the defect detection area of ​​the seaweed sheet. Under the action of the blower, the seaweed sheet is pressed onto the support plate, which can enable the seaweed sheet detection device to clearly collect the image information of the seaweed sheet and accurately judge the defect of the seaweed sheet.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a seaweed sheet foreign object detection device, including a frame, a seaweed sheet detection device and a seaweed sheet conveying device mounted on the frame. The key feature is that the seaweed sheet conveying device includes multiple sets of drive rollers, a floating roller located above each set of drive rollers, two trays located between two adjacent sets of drive rollers with a gap, a motor for driving the drive rollers to rotate and a matching intermediate transmission assembly, and an air blowing pipe for blowing air onto the trays is provided above each of the two trays located between two adjacent sets of drive rollers.

[0008] Furthermore, a blower pipe connecting plate is provided on the blower pipe, and the blower pipe connecting plate is inclinedly arranged on the frame.

[0009] Furthermore, the pallet has a downwardly bent receiving part on the feeding side and a toothed part on the discharging side.

[0010] Furthermore, the seaweed sheet conveying device also includes a feeding belt conveyor and guide belt conveyors located on both sides of the belt in the feeding belt conveyor.

[0011] Furthermore, static eliminators are provided on both the feed side and the discharge side of the seaweed sheet conveying device on the frame.

[0012] Furthermore, the seaweed sheet detection device includes a line scan camera located above or below the gap between two trays between two adjacent sets of drive rollers, and a background light source assembly located below or above the gap between two trays between two adjacent sets of drive rollers.

[0013] Furthermore, a tunnel light source assembly is provided below or above the line scan camera.

[0014] Furthermore, the frame is provided with a tunnel light source blowing pipe that blows air onto the top plate and dustproof goggles of the tunnel light source assembly.

[0015] Furthermore, the frame is provided with a background light source blowing pipe that blows air onto the diffuser plate in the background light source assembly.

[0016] Furthermore, the seaweed sheet detection device is arranged in groups along the conveying direction of the seaweed sheet conveying device.

[0017] The beneficial effects of this utility model are: 1. By setting a blower in the conveying device, the seaweed sheet is pressed onto the tray by the wind when it passes the detection position, thus preventing it from floating and ensuring the image acquisition effect of the detection device; 2. Three types of seaweed sheet detection devices are set up, which can detect defects on the upper surface, lower surface and interior of the seaweed sheet respectively; 3. A light source blower is set up to match the light source of the seaweed sheet detection device, avoiding the influence of foreign objects on the light source. Attached Figure Description

[0018] Figure 1 This is a front view of the foreign object detection device for seaweed sheets of this utility model; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure; Figure 3 yes Figure 1 A schematic diagram of the bottom structure; Figure 4 yes Figure 1 A schematic diagram of the structure after removing the line scan camera; Figure 5 yes Figure 4 Internal structure diagram; Figure 6This is a schematic diagram of the structure of the tray in this utility model.

[0019] In the attached diagram, 1 is the frame, 2 is the drive roller, 3 is the floating roller, 4 is the pallet, 4-1 is the receiving part, 4-2 is the toothed part, 5 is the motor, 6 is the intermediate transmission assembly, 7 is the air duct, 8 is the air duct connecting plate, 9 is the feeding belt conveyor, 10 is the guide belt conveyor, 11 is the static eliminator, 12 is the line scan camera, 13 is the background light source assembly, 14 is the tunnel light source assembly, 15 is the tunnel light source air duct, and 16 is the background light source air duct. Detailed Implementation

[0020] See appendix Figure 1-6 This utility model provides a foreign object detection device for seaweed sheets, including a frame 1, a seaweed sheet detection device and a seaweed sheet conveying device mounted on the frame 1.

[0021] See appendix Figure 3-6 The aforementioned seaweed sheet conveying device includes multiple sets of drive rollers 2, floating rollers 3 located above each set of drive rollers 2, two support plates 4 located between two adjacent sets of drive rollers 2 with a gap, a motor 5 that drives all drive rollers 2 to rotate, and a matching intermediate transmission assembly 6. Air blowing pipes 7 are provided above the two support plates 4 located between two adjacent sets of drive rollers 2 to blow air onto the support plates 4.

[0022] The intermediate transmission assembly 6 includes a single-layer synchronous pulley and a matching synchronous belt, or a double-layer synchronous pulley and two matching synchronous belts, thereby enabling the rotation of multiple sets of drive rollers 2 under the drive of a single motor. The two ends of the floating roller 2 are limited in the vertical limiting grooves on the frame 1 by bushings, and can float up and down to allow the seaweed sheets to pass through.

[0023] The gap between the two pallets 4 located between two adjacent sets of drive rollers 2 forms the detection position of the detection device. An air blower 7 is set on each side of the detection position so that the seaweed sheet can stick tightly to the pallet 4 under the action of air pressure when it passes through the detection position, which facilitates the detection device to collect a clear image. The frame 1 is equipped with components such as an air pump, control valve and pipeline matching the air blower 7.

[0024] An air blowing pipe connecting plate 8 is provided on the air blowing pipe 7, and the air blowing pipe connecting plate 8 is inclinedly set on the frame 1. In specific implementation, the air blowing pipe connecting plate 8 is set obliquely upward towards the feeding side, which facilitates the guidance of the seaweed sheets.

[0025] See appendix Figure 6 The pallet 4 has a downwardly bent receiving part 4-1 on the feeding side to receive the head of the seaweed sheet, and a toothed part 4-2 on the discharging side to reduce the friction between the seaweed sheet and the pallet 4 and facilitate backward movement.

[0026] See appendix Figure 2and 4 The seaweed sheet conveying device also includes a feeding belt conveyor 9 and guide belt conveyors 10 located on both sides of the belt in the feeding belt conveyor 9 to facilitate the seaweed sheets entering the roller conveyor.

[0027] See appendix Figure 2 and 4 Static eliminators 11 are installed on both the feed side and the discharge side of the seaweed sheet conveying device on the frame 1. Static electricity is eliminated before the seaweed sheets enter the inspection and after the inspection is completed, so as to facilitate the inspection and subsequent sorting operations.

[0028] See appendix Figure 1-3 The seaweed sheet detection device described above includes a line scan camera 12 located above or below the gap between two trays 4 between two adjacent sets of drive rollers 2, and a background light source assembly 13 located below or above the gap between two trays 4 between two adjacent sets of drive rollers 2. A tunnel light source assembly 14 is provided below the line scan camera 12 and above the tray 4, or above the line scan camera 12 and below the tray 4, to provide a uniform lighting environment for the camera and ensure the accuracy of the detection results. The seaweed sheet detection device has three sets arranged along the conveying direction of the seaweed sheet conveying device, respectively used to detect defects on the upper surface, lower surface, and interior of the seaweed sheet. When the seaweed sheet detection device detects surface defects, the tunnel light source assembly 14 and the background light source assembly 13 are provided. When the seaweed sheet detection device detects internal defects, the background light source assembly 13 is an infrared background light source.

[0029] To prevent foreign objects from adhering to the light source during the testing process, a background light source blowing pipe 16 is provided on the frame 1 to blow air onto the diffuser plate in the background light source assembly 13, and two tunnel light source blowing pipes 15 are provided on the frame 1 to blow air onto the top plate and dustproof mirror in the tunnel light source assembly 14, respectively.

[0030] In practice, the above-mentioned seaweed sheet detection device and seaweed sheet conveying device are arranged in two sets side by side along the width direction of the frame 1, but they share components such as the air blowing pipe 7, the tunnel light source air blowing pipe 15, and the background light source air blowing pipe 16.

[0031] The working process of the sorting system of this utility model is as follows: 1. After being separated, the individual seaweed sheets are destaticated by the static eliminator 11 and then fed into the roller conveyor via the feeding belt conveyor 9 to begin defect detection. During this process, the seaweed sheets are guided into the roller conveyor in a preset direction by the guide belt conveyor 10.

[0032] 2. The seaweed sheet moves under the drive of drive roller 2, and during the movement, it passes sequentially through the seaweed sheet upper surface detection device, the seaweed sheet lower surface detection device, and the seaweed sheet interior detection device. The above three devices respectively collect images of the upper surface, lower surface, and interior of the seaweed sheet, so that the control unit can determine whether there are defects and the type of defects. Then, the seaweed sheet is sorted by the matching sorting device and sent to different collection boxes.

[0033] When the seaweed sheet passes the detection position, the air blower 7 blows air downwards to make the seaweed sheet stably adhere to the tray 4 while it moves, so as to facilitate the detection and defect judgment of the above-mentioned detection device.

[0034] 3. When the seaweed sheets leave the roller conveyor, they will be electrostatically eliminated again by the electrostatic eliminator 11 to facilitate subsequent sorting operations.

[0035] Finally, it is necessary to note that the above content is only used to help understand the technical solution of this utility model and should not be construed as a limitation on the scope of protection of this utility model; any non-essential improvements and adjustments made by those skilled in the art based on the above content of this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A foreign object detection device for seaweed sheets, comprising a frame (1), a seaweed sheet detection device and a seaweed sheet conveying device mounted on the frame (1), characterized in that: The seaweed sheet conveying device includes multiple sets of drive rollers (2), floating rollers (3) located above each set of drive rollers (2), two trays (4) located between two adjacent sets of drive rollers (2) with a gap, a motor (5) for driving the drive rollers (2) to rotate, and a matching intermediate transmission assembly (6). Above each of the two trays (4) located between two adjacent sets of drive rollers (2), there is a blower pipe (7) for blowing air onto the trays (4).

2. The seaweed sheet foreign object detection device according to claim 1, characterized in that: A blower pipe connecting plate (8) is provided on the blower pipe (7), and the blower pipe connecting plate (8) is inclinedly arranged on the frame (1).

3. The foreign object detection device for seaweed sheets according to claim 1, characterized in that: The pallet (4) has a downwardly bent receiving part (4-1) on the feeding side and a toothed part (4-2) on the discharging side.

4. The foreign object detection device for seaweed sheets according to claim 1, characterized in that: The seaweed sheet conveying device also includes a feeding belt conveyor (9) and guide belt conveyors (10) located on both sides of the belt in the feeding belt conveyor (9).

5. The foreign object detection device for seaweed sheets according to claim 1, characterized in that: Static eliminators (11) are provided on the frame (1) and on both the feed side and the discharge side of the seaweed sheet conveying device.

6. The foreign object detection device for seaweed sheets according to any one of claims 1-5, characterized in that: The seaweed sheet detection device includes a line array camera (12) located above or below the gap between two trays (4) between two adjacent sets of drive rollers (2) and a background light source assembly (13) located below or above the gap between two trays (4) between two adjacent sets of drive rollers (2).

7. The seaweed sheet foreign object detection device according to claim 6, characterized in that: A tunnel light source assembly (14) is provided below or above the line scan camera (12).

8. The foreign object detection device for seaweed sheets according to claim 7, characterized in that: The frame (1) is provided with a tunnel light source blowing pipe (15) that blows air to the top plate and dustproof mirror in the tunnel light source assembly (14).

9. The foreign object detection device for seaweed sheets according to claim 6, characterized in that: A background light source blowing pipe (16) is provided on the frame (1) to blow air onto the diffuser plate in the background light source assembly (13).

10. The seaweed sheet foreign object detection device according to claim 6, characterized in that: The seaweed sheet detection device is provided in three sets along the conveying direction of the seaweed sheet conveying device.

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