Rib scraping machine for yellow sun-cured tobacco shreds

Abstract

The rib scraping machine comprises a rib scraping mechanism, the rib scraping mechanism comprises a roller, a roller supporting rod, a scraper module and a first air spring, the center of the roller supporting rod is fixedly connected with a telescopic rod of the first air spring, and the first air spring is connected with a lifting mechanism; the two sides of the roller supporting rod are rotationally connected with the multiple rollers correspondingly, and the scraper module is arranged at one end of the roller supporting rod. The scraper module comprises a second gas spring, an electric push rod support and a rib scraping knife, the electric push rod support is fixed to one end of the roller supporting rod, the second gas spring is fixed to the electric push rod support, and a telescopic rod of the second gas spring is fixedly connected with the rib scraping knife. In particular to a rib scraping machine for yellow sun-cured tobacco shreds to solve the problems that in the prior art, efficiency is low, rib scraping is not in place or rib scraping is not conducted due to the fact that a peeling knife or a sugarcane knife needs to be manually used for rib scraping.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf processing equipment, and in particular to a tendon scraping machine for sun-cured tobacco shreds. Background Art

[0002] Currently, after the tobacco leaves for sun-cured tobacco shreds are picked, tobacco farmers use sugarcane knives or peeling knives to scrape off the main veins of the tobacco leaves, and then pile them up, cover them, cut them into shreds and sun-dry them. According to the production technical requirements, 2 / 3 of the middle tobacco leaves should be scraped off, and 1 / 3 of the upper and lower tobacco leaves should be scraped off. However, in actual operation, due to the large investment in labor cost for tendon scraping (6 - 8 tendon scraping workers are required per mu), there are phenomena that tobacco farmers do not scrape the tendons in place or do not scrape the tendons at all. The inspection of the contained-stem rate of the sun-cured tobacco shreds purchased in the 2024 production season is as high as 12%, which greatly increases the picking cost in the later processing link and reduces the finished product rate and customer satisfaction.

[0003] After retrieval, the tobacco leaf stalk removing device with the publication number of CN220274867U discloses a tobacco leaf stalk removing device, which includes a collection box. The interior of the collection box is divided into a tobacco leaf collection cavity and a tobacco stalk collection cavity. A separation device for removing the stalks of tobacco leaves is arranged on the collection box. The separation device includes a mounting plate arranged on the collection box, and two cutting knives and two rotating wheels driven by a motor are respectively arranged on the mounting plate in a shape of an eight. In the present invention: place the stalk head part of the tobacco leaf between the two cutting knives, and then start the rotating wheels. The rotating wheels are in the shape of an eight, and the inner side spikes fix and drag the tobacco stalks, so that the bottom tobacco leaves move. During the movement, the cutting knives separate the tobacco leaves from the tobacco stalks, realizing automatic stalk removal of the tobacco leaves. And because the rotating wheels are arranged in the shape of an eight, after reaching a certain position, the spikes are separated from the tobacco stalks, and the tobacco stalks automatically fall into the tobacco stalk collection cavity. The tobacco leaves can be continuously placed between the two vertical rods by manual, which is convenient for removing the stalks of tobacco leaves.

[0004] Although the above device can separate the tobacco leaves and the tobacco stalks, it cannot separate the main veins of the tobacco leaves from the tobacco leaves. It can only cut the whole tobacco leaves and the tobacco stalks, but the main veins still need to be scraped manually. Therefore, there is an urgent need to design a tendon scraping machine that can solve the problems of incomplete tendon scraping and high contained-stem rate of the sun-cured tobacco shreds after sun-drying. Summary of the Invention

[0005] The main purpose of the present invention is to provide a tendon scraping machine for sun-cured tobacco shreds to solve the problems of low efficiency, incomplete tendon scraping or no tendon scraping caused by manually using peeling knives or sugarcane knives for tendon scraping in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A rib scraping machine for sun-cured tobacco shreds, comprising a rib scraping mechanism. The rib scraping mechanism includes rollers, roller support rods, a cutter module and a first air spring. The center of the roller support rod is fixedly connected to the telescopic rod of the first air spring. The first air spring is connected to a lifting mechanism. A plurality of the rollers are respectively rotatably connected to both sides of the roller support rod. One end of the roller support rod is provided with the cutter module;

[0008] The cutter module includes a second air spring, an electric push rod bracket and a rib scraping knife. One end of the roller support rod fixes the electric push rod bracket. The electric push rod bracket fixes the second air spring. The telescopic rod of the second air spring is fixedly connected to the rib scraping knife;

[0009] The rib scraping knife is of an inverted U-shaped structure with sharp lower ends on both sides.

[0010] As a further limitation of the present invention, the lifting mechanism includes a cross beam, a screw rod, a support frame, a slider and a stepping motor. The housing of the first air spring fixes one end of the cross beam. The other end of the cross beam is fixedly connected to the middle of one side of the slider. The slider is slidably arranged in a chute opened in the middle of the support frame. The screw rod is arranged in the chute of the support frame. Both ends of the screw rod are respectively rotatably connected to the support frame. The screw rod is in threaded fit with the slider. The upper end of the support frame fixes the stepping motor. The output shaft of the stepping motor is fixedly connected to the upper end of the screw rod.

[0011] As a further limitation of the present invention, the support frame is fixed to one end of the upper side of the operating table. Symmetrical conveyor belt assemblies are arranged on the operating table. Each conveyor belt assembly is driven by a servo motor. The servo motor is fixed to one side of the operating table. The two conveyor belt assemblies are driven synchronously.

[0012] As a further limitation of the present invention, a monitoring module is arranged on the upper side of the operating table. The monitoring module includes a vision sensor and a vision sensor bracket. The vision sensor is fixed to the lower side of the upper end of the vision sensor bracket. The lower end of the vision sensor is fixedly connected to the operating table. It also includes a controller. The controller and the vision sensor perform data transmission.

[0013] As a further limitation of the present invention, a tobacco leaf alignment mechanism is provided at one end of the operating table. The tobacco leaf alignment mechanism includes an alignment plate, a sliding rod, and a limiting groove. There are two sets of the tobacco leaf alignment mechanisms. The center of the lower side of the alignment plate is fixedly connected to the sliding rod. The sliding rod is slidably arranged in the limiting groove opened in the middle of one end of the operating table. The lower end of the sliding rod is fixedly connected to the telescopic rod of a third electric push rod. The housing of the third electric push rod is fixed to the lower side of the operating table. The controller is electrically connected to the third electric push rod, and the controller controls the start and stop of the third electric push rod. The tobacco leaf alignment mechanism is arranged between the symmetric conveyor belt assemblies, and a visual sensor is arranged above the tobacco leaf alignment mechanism.

[0014] As a further limitation of the present invention, the support frame is connected to a tobacco leaf flattening mechanism. The tobacco leaf flattening mechanism includes a swing rod, a connecting rod, a nut, a spring, a pressing rod, a threaded column, a limiting plate, a flattening roller, and a roller support seat. The two cross bars on both sides of the support frame are respectively rotatably connected to one end of a pair of connecting rods. The other end of each pair of connecting rods is respectively rotatably connected to both sides of one end of the pressing rod. Both ends of the pressing rod are respectively penetrated by the threaded column. Each threaded column respectively penetrates through the spring and the limiting plate. The spring is fixed on the upper side of the pressing rod, and the upper end of the spring is fixed to the limiting plate. The screw rod is in threaded cooperation with the nut. The lower ends of each pair of threaded columns are respectively fixedly connected to both ends of the upper cross plate of the roller support seat. The roller support seat is bent. The vertical plates of the roller support seat are respectively rotatably connected to a plurality of evenly arranged flattening rollers. One end of each of the two ends on one side of the slider is rotatably connected to one end of the swing rod, and the other end of each swing rod is respectively rotatably connected to the middle of the corresponding connecting rod.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] Through the coordinated work of the rib scraping mechanism, the lifting mechanism, the conveyor belt assembly, the monitoring module, and the tobacco leaf alignment mechanism, the automatic removal of the main veins of the tobacco leaves is realized, greatly improving the processing efficiency and the convenience of operation;

[0017] By controlling the position of the rib scraping knife and using the gas spring to control the position of the rib scraping knife, as well as the limiting of the tobacco leaf by the roller, by setting components such as the gas spring and the limiting plate, while removing the main vein, it can effectively protect the tobacco leaf from being over-compressed or damaged, ensuring the integrity of the tobacco leaf, being able to effectively remove the main vein of the tobacco leaf, while reducing the damage to the tobacco leaf and improving the quality of the cut tobacco;

[0018] Through the cooperation of the controller and the visual sensor, the real-time monitoring and automatic correction of the posture of the tobacco leaf are realized. The rib scraping mechanism and the lifting mechanism are used in combination, and can adapt to tobacco leaves of different sizes and shapes;

[0019] By adjusting the position of the nut, the flattening force can be adjusted to adapt to tobacco leaves of different thicknesses and hardnesses, improving the adaptability and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic three-dimensional structure of the present invention Figure 1 ;

[0021] Figure 2 of the present invention Figure 1 Partial enlarged view of area A;

[0022] Figure 3 Schematic three-dimensional structure of the present invention Figure 2 ;

[0023] Figure 4 of the present invention Figure 3 Partial enlarged view of area B;

[0024] Figure 5 Schematic three-dimensional structure of the present invention.

[0025] In the figure: 1, conveyor belt assembly; 101, steering gear; 2, monitoring module; 201, vision sensor; 202, vision sensor bracket; 3, operating table; 4, rib scraping mechanism; 401, roller; 402, roller support rod; 403, rib scraping knife module; 4031, second air spring; 4032, electric push rod bracket; 4033, rib scraping knife; 404, first air spring; 5, lifting mechanism; 501, cross beam; 502, screw; 503, support frame; 504, slider; 505, stepping motor; 6, tobacco leaf flattening mechanism; 601, swing rod; 602, connecting rod; 603, nut; 604, spring; 605, pressing rod; 606, threaded column; 607, limit plate; 608, paving roller; 609, roller support seat; 7, tobacco leaf alignment mechanism; 701, alignment plate; 702, sliding rod; 703, limit groove; 8, third electric push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0027] As Figures 1 - 5 shown, this embodiment provides an embodiment of a rib scraping machine for sun-cured tobacco shreds. In this embodiment, refer to Figures 1 - 4, A rib scraping machine for sun-cured tobacco shreds, comprising a rib scraping mechanism 4. The rib scraping mechanism 4 includes a roller 401, a roller support rod 402, a scraping knife module 403 and a first air spring 404. The center of the roller support rod 402 is fixedly connected to the telescopic rod of the first air spring 404. The first air spring 404 is connected to a lifting mechanism 5. A plurality of the rollers 401 are respectively rotatably connected to both sides of the roller support rod 402. A scraping knife module 403 is provided at one end of the roller support rod 402;

[0028] The scraping knife module 403 includes a second air spring 4031, an electric push rod bracket 4032 and a rib scraping knife 4033. The electric push rod bracket 4032 is fixed at one end of the roller support rod 402. The electric push rod bracket 4032 fixes the second air spring 4031. The telescopic rod of the second air spring 4031 is fixedly connected to the rib scraping knife 4033;

[0029] The rib scraping knife 4033 is of an inverted U-shaped structure, with sharp lower ends on both sides, which can conveniently and quickly separate the tobacco leaves from the main veins.

[0030] In this embodiment, the rib scraping mechanism 4 is provided to scrape the main veins in the middle of the tobacco leaves. The lifting mechanism 5 can drive the first air spring 404, the roller support rod 402 and the roller 401 to lift and lower. When the roller 401 descends, the roller 401 presses on both sides of the main vein in the middle of the tobacco leaves. The roller support rod 402 also drives the scraping knife module 403 to move downwards to contact the tobacco leaves. Since the rib scraping knife 4033 is fixed to the second air spring 4031, the height of the rib scraping knife 4033 is lower than that of the roller 401. When the rib scraping knife 4033 first contacts the tobacco leaves, after the two sides of the rib scraping knife 4033 cut off the tobacco leaves and the main veins, it reaches the conveyor belt position. Under the action of the second air spring 4031, the rib scraping knife 4033 receives a reaction force, and the second air spring 4031 undergoes elastic deformation. The roller support rod 402 can also continue to move downwards following the lifting mechanism 5 until the roller 401 contacts the tobacco leaves and presses on both sides of the main vein of the tobacco leaves. During the movement of the tobacco leaves, the roller 401 rotates, the tobacco leaves move, the scraping knife module 403 does not move, the rib scraping knife 4033 does not move, the tobacco leaves move, and the main vein of the tobacco leaves is separated from the tobacco leaves under the action of the rib scraping knife 4033.

[0031] The lifting mechanism 5 includes a cross beam 501, a screw rod 502, a support frame 503, a slider 504 and a stepper motor 505. The housing of the first air spring 404 is fixed to one end of the cross beam 501, and the other end of the cross beam 501 is fixedly connected to the middle of one side of the slider 504. The slider 504 is slidably arranged in a chute opened in the middle of the support frame 503. The screw rod 502 is arranged in the chute of the support frame 503. Both ends of the screw rod 502 are respectively rotatably connected to the support frame 503. The screw rod 502 is in threaded engagement with the slider 504. The upper end of the support frame 503 is fixed with the stepper motor 505, and the output shaft of the stepper motor 505 is fixedly connected to the upper end of the screw rod 502.

[0032] In this embodiment, the stepper motor 505 can drive the screw rod 502 to rotate. The screw rod 502 can drive the slider 504 to move in the chute opened in the support frame 503. The slider 504 can drive the cross beam 501 and the rib scraping mechanism 4 to move, realizing the lifting of the rib scraping mechanism 4.

[0033] The support frame 503 is fixed to one end of the upper side of the operating table 3. Symmetrical conveyor belt assemblies 1 are arranged on the operating table 3. Each conveyor belt assembly 1 is driven by a servo motor 101. The servo motor 101 is fixed to one side of the operating table 3. The two conveyor belt assemblies 1 are driven synchronously.

[0034] In this embodiment, the servo motor 101 can drive the conveyor belt of the conveyor belt assembly 1 to convey, and then convey the tobacco leaves to move.

[0035] A monitoring module 2 is arranged on the upper side of the operating table 3. The monitoring module 2 includes a vision sensor 201 and a vision sensor bracket 202. The vision sensor 201 is fixed to the lower side of the upper end of the vision sensor bracket 202. The lower end of the vision sensor 201 is fixedly connected to the operating table 3. It further includes a controller, and data transmission is carried out between the controller and the vision sensor 201.

[0036] In this embodiment, the vision sensor 201 is set. The vision sensor 201 can monitor the posture of the tobacco leaves in real time to ensure that the head and tail of the tobacco leaves are basically consistent with the conveying direction of the conveyor belt assembly 1.

[0037] One end of the operation table 3 is provided with a tobacco leaf alignment mechanism 7. The tobacco leaf alignment mechanism 7 includes an alignment plate 701, a sliding rod 702, and a limiting groove 703. There are two sets of the tobacco leaf alignment mechanisms 7. The center of the lower side of the alignment plate 701 is fixedly connected to the sliding rod 702. The sliding rod 702 is slidably arranged in the limiting groove 703 opened in the middle of one end of the operation table 3. The lower end of the sliding rod 702 is fixedly connected to the telescopic rod of a third electric push rod 8. The housing of the third electric push rod 8 is fixed to the lower side of the operation table 3. The controller is electrically connected to the third electric push rod 8 and controls the start and stop of the third electric push rod 8. The tobacco leaf alignment mechanism 7 is arranged between the symmetric conveyor belt assemblies 1, and a visual sensor 201 is arranged above the tobacco leaf alignment mechanism 7.

[0038] Further, the upper side of the alignment plate 701 and the upper side of the conveyor belt of the conveyor belt assembly 1 are on the same horizontal plane.

[0039] In this embodiment, when the visual sensor 201 monitors that the tobacco leaf is not properly aligned, it feeds back to the controller. The controller controls the third electric push rod 8 to drive the sliding rod 702 and the alignment plate 701 to move. The alignment plate 701 at the corresponding position drives the tobacco leaf to displace until the head and tail of the tobacco leaf are basically consistent with the conveying direction of the conveyor belt assembly 1, and then the controller controls the third electric push rod 8 to stop working.

[0040] The support frame 503 is connected to a tobacco leaf flattening mechanism 6. The tobacco leaf flattening mechanism 6 includes a swing rod 601, a connecting rod 602, a nut 603, a spring 604, a pressing rod 605, a threaded column 606, a limiting plate 607, a flattening roller 608, and a roller support seat 609. The two cross bars on both sides of the support frame 503 are respectively rotatably connected to one end of a pair of the connecting rods 602. The other end of each pair of the connecting rods 602 is respectively rotatably connected to both sides of one end of the pressing rod 605. The two ends of the pressing rod 605 are respectively penetrated by the threaded columns 606. Each threaded column 606 respectively penetrates through the spring 604 and the limiting plate 607. The spring 604 is fixed above the pressing rod 605, and the upper end of the spring 604 is fixed to the limiting plate 607. The screw rod 502 is in threaded fit with the nut 603. The lower ends of each pair of the threaded columns 606 are respectively fixedly connected to both ends of the upper cross plate of the roller support seat 609. The roller support seat 609 is in a bent shape, and the vertical plates of the roller support seat 609 are respectively rotatably connected to a plurality of evenly arranged flattening rollers 608. One end of each of the swing rods 601 is rotatably connected to both ends of one side of the slider 504, and the other end of each swing rod 601 is rotatably connected to the middle of the corresponding connecting rod 602.

[0041] In this embodiment, the tobacco leaf flattening mechanism 6 can assist in flattening both sides of the tobacco leaf. During the downward movement of the slider 504, the slider 504 can drive the swing rod 601 to swing. The swing rod 601 drives the connecting rod 602 to swing, and the connecting rod 602 drives the pressing rod 605 to move downward and outward. The two pressing rods 605 move away from each other while moving downward. The pressing rod 605 drives the roller support seat 609 to move downward and outward, and the roller follows to move downward and outward. During the process of the roller moving downward and outward, the tobacco leaf is flattened and pressed. Due to the provision of the spring 604 and the limiting plate 607, after the roller contacts the tobacco leaf and presses it, under the reaction force, the roller will not continue to press the tobacco leaf down and damage it, but will move upward to drive the roller support seat 609 and the threaded rod 606 to move upward, and the spring 604 undergoes elastic deformation to protect the tobacco leaf from being damaged;

[0042] Rotating the nut 603 to adjust its position on the threaded rod 606 can adjust the tightness of the spring 604 and achieve the adjustment of the tightness of the roller support seat 609.

[0043] In the present invention, the conveying direction of the conveyor belt assembly 1 is from the monitoring module 2 towards the rib scraping mechanism 4.

[0044] During use, a staff member is assigned to each end of the operating table 3. One staff member places the tobacco leaf on the conveyor belt assembly 1 to ensure that the tobacco leaf is on the tobacco leaf aligning mechanism 7 below the monitoring module 2. The monitoring module 2 monitors the posture of the tobacco leaf in real time to ensure that the head and tail of the tobacco leaf are basically consistent with the conveying direction of the conveyor belt. When the posture of the tobacco leaf is incorrect, the controller controls the tobacco leaf aligning mechanism 7 to work to align the tobacco leaf. The conveyor belt assembly 1 drives the tobacco leaf to move. When the tobacco leaf moves to the lower side of the rib scraping mechanism 4, the lifting mechanism 5 drives the rib scraping mechanism 4 to move downward so that the rib scraping knife 4033 cuts the two sides of the main vein of the tobacco leaf. At the same time, the conveyor belt assembly 1 continues to drive the tobacco leaf to move, and the rib scraping knife 4033 remains stationary. The main vein in the middle of the tobacco leaf is cut by the rib scraping knife 4033 to achieve rib scraping treatment. At the same time, the roller 401 of the rib scraping mechanism 4 can also press the two sides of the main vein of the tobacco leaf to limit it and assist in rib scraping. Due to the provision of the first air spring 404, the roller 401 will not press the tobacco leaf tightly so that it cannot move with the conveyor belt assembly 1. The movement of the tobacco leaf will drive the roller 401 to roll to assist the movement of the tobacco leaf. And during the process of the rib scraping mechanism 4 moving downward following the lifting mechanism 5, the tobacco leaf flattening mechanism 6 can assist in flattening both sides of the tobacco leaf to achieve the proper unfolding of the leaf, facilitate the smooth movement of the leaf and the limitation of the leaf, and prevent the rib scraping effect from being poor due to the possible curling problem of the tobacco leaf during the movement with the conveyor belt assembly 1. After the tobacco leaf is conveyed out by the conveyor belt assembly 1, the staff member at the other end sorts out the scraped tobacco leaf, and at the same time clears the tobacco veins on the operating table 3 and classifies and stacks the tobacco leaves after rib scraping.

[0045] In summary, through the coordinated operation of the rib scraping mechanism, lifting mechanism, conveyor belt assembly, monitoring module, and tobacco leaf alignment mechanism, the present invention realizes the automatic removal of the main veins of tobacco leaves. By controlling the position of the rib scraping knife and using gas springs to control the position of the rib scraping knife, as well as the limiting of the tobacco leaves by rollers, and by setting components such as gas springs and limiting plates, while removing the main veins, it can effectively protect the tobacco leaves from being overcompressed or damaged, ensuring the integrity of the tobacco leaves, effectively removing the main veins of the tobacco leaves, reducing the damage to the tobacco leaves at the same time, and improving the quality of cut tobacco.

[0046] The specific embodiments of the invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the present invention. Therefore, all equivalent transformations, modifications, improvements, etc. made without departing from the spirit and principles of the present invention should be covered by the scope of the present invention.

Claims

1. A scraping machine for sun-dried yellow tobacco, comprising a scraping mechanism (4), the scraping mechanism (4) comprising a roller (401), a roller support rod (402), a scraper module (403) and a first gas spring (404), the center of the roller support rod (402) being fixedly connected to a telescopic rod of the first gas spring (404), the first gas spring (404) being connected to a lifting mechanism (5), the two sides of the roller support rod (402) being rotatably connected to a plurality of the rollers (401), and one end of the roller support rod (402) being provided with the scraper module (403); The scraper module (403) comprises a second gas spring (4031), an electric push rod bracket (4032) and a scraper (4033); one end of the roller support rod (402) is fixed to the electric push rod bracket (4032); the electric push rod bracket (4032) is fixed to the second gas spring (4031); and the telescopic rod of the second gas spring (4031) is fixedly connected to the scraper (4033); The scraper (4033) is an inverted U-shaped structure, with sharp lower ends on both sides.

2. The scraper for sun-cured tobacco according to claim 1, characterized in that: The lifting mechanism (5) comprises a crossbeam (501), a screw rod (502), a support frame (503), a slider (504) and a stepper motor (505); the housing of the first gas spring (404) fixes one end of the crossbeam (501); the other end of the crossbeam (501) is fixedly connected to the middle part of one side of the slider (504); the slider (504) is slidably arranged in a slide groove opened in the middle part of the support frame (503); the screw rod (502) is arranged in the slide groove of the support frame (503); the two ends of the screw rod (502) are respectively rotatably connected to the support frame (503); the screw rod (502) is threadedly connected to the slider (504); the upper end of the support frame (503) is fixed with the stepper motor (505); the output shaft of the stepper motor (505) is fixedly connected to the upper end of the screw rod (502).

3. The scraper for sun-cured tobacco according to claim 2, characterized in that: The support frame (503) is fixed to one end of the upper side of the operating platform (3); symmetrical conveyor belt assemblies (1) are arranged on the operating platform (3); each conveyor belt assembly (1) is driven by a steering gear (101); the steering gear (101) is fixed to one side of the operating platform (3); and the two conveyor belt assemblies (1) are driven synchronously.

4. The scraper for sun-cured tobacco according to claim 3, characterized in that: A monitoring module (2) is arranged on the upper side of the operating table (3), and the monitoring module (2) comprises a visual sensor (201) and a visual sensor bracket (202), the visual sensor (201) is fixed to the lower side of the upper end of the visual sensor bracket (202), the lower end of the visual sensor (201) is fixedly connected to the operating table (3), and also comprises a controller, and the controller and the visual sensor (201) perform data transmission.

5. The scraper for sun-cured tobacco according to claim 4, characterized in that: A tobacco leaf straightening mechanism (7) is arranged at one end of the operating platform (3), and the tobacco leaf straightening mechanism (7) comprises a straightening plate (701), a sliding rod (702) and a limiting groove (703). The tobacco leaf straightening mechanism (7) is composed of two groups. The lower center of the straightening plate (701) is fixedly connected to the sliding rod (702), and the sliding rod (702) is slidably arranged in the limiting groove (703) opened in the middle of one end of the operating platform (3). The lower end of the sliding rod (702) is fixedly connected to the telescopic rod of the third electric push rod (8), and the shell of the third electric push rod (8) is fixed to the lower side of the operating platform (3). The controller is electrically connected to the third electric push rod (8), and the controller controls the start and stop of the third electric push rod (8). The tobacco leaf straightening mechanism (7) is arranged between the symmetrical conveyor belt assemblies (1), and the visual sensor (201) is arranged on the upper side of the tobacco leaf straightening mechanism (7).

6. The scraper for sun-cured tobacco according to claim 3, characterized in that: The support frame (503) is connected to a tobacco leaf flattening mechanism (6), and the tobacco leaf flattening mechanism (6) includes a swing rod (601), a connecting rod (602), a nut (603), a spring (604), a pressure rod (605), a threaded column (606), a limit plate (607), a flattening roller (608) and a roller support seat (609). The cross bars on both sides of the support frame (503) are respectively rotatably connected to one end of a pair of connecting rods (602), and the other end of each pair of connecting rods (602) is respectively rotatably connected to the two sides of one end of the pressure rod (605). The two ends of the pressure rod (605) are respectively passed through by the threaded column (606), and each threaded column (606) passes through the spring (604) and the limit plate (607). ), the spring (604) is fixed on the upper side of the pressure rod (605), the upper end of the spring (604) is fixed to the limit plate (607), the screw rod (502) is threadedly connected to the nut (603), the lower ends of each pair of threaded columns (606) are respectively fixedly connected to the two ends of the upper horizontal plate of the roller support seat (609), the roller support seat (609) is bent, and the vertical plates of the roller support seat (609) are respectively rotatably connected to a number of evenly arranged flattening rollers (608), the two ends of one side of the slider (504) are respectively rotatably connected to one end of the swing rod (601), and the other end of each swing rod (601) is respectively rotatably connected to the middle part of the corresponding connecting rod (602).

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