Tobacco leaf grading device and grading system thereof

Abstract

The invention relates to the field of tobacco leaf grading, in particular to a tobacco leaf grading device which comprises a tobacco leaf grading box, a high-definition industrial camera and a plurality of near-infrared spectrometers, the tobacco leaf grading box is provided with a partition plate, and the partition plate divides the tobacco leaf grading box into an image shooting area and a near-infrared spectrum recognition area; the high-definition industrial camera is arranged in the image shooting area, and the plurality of near-infrared spectrometers are movably arranged in the near-infrared spectrum identification area in a surrounding manner through a displacement adjusting device; the tobacco grading device comprises a tobacco grading box, a plurality of near-infrared spectrometers are movably arranged in a near-infrared spectrum recognition area in a surrounding mode through a displacement adjusting device, an inlet end and an outlet end are arranged on the two sides of the tobacco grading box respectively, and liftable shielding blocks are arranged at the inlet end and the outlet end respectively. Therefore, the plurality of near-infrared spectrometers can perform near-infrared detection on the tobacco leaves from multiple directions and multiple angles by combining the plurality of near-infrared spectrometers into a matrix, and the spectral information of the tobacco leaves can be more comprehensively acquired.

Description

Technical Field

[0001] This invention relates to the field of tobacco leaf grading, and more specifically, to a tobacco leaf grading device and a grading system thereof. Background Technology

[0002] In the tobacco industry, accurate grading of tobacco leaves is a crucial step in ensuring product quality and processing efficiency. Currently, tobacco leaf grading systems typically employ automation technology, using grading boxes on tobacco leaf conveyors combined with optical detection methods to grade the leaves. For example, Chinese invention patent CN2023231586574, entitled "A Tobacco Leaf Grading Device Based on Near-Infrared Technology," discloses a tobacco leaf grading scheme that utilizes a high-definition industrial camera for imaging and a near-infrared spectrometer for scanning. This scheme, through image acquisition and spectral analysis, can achieve a certain degree of automated grading of tobacco leaves.

[0003] However, the existing tobacco grading system still has the following technical shortcomings:

[0004] 1. Limitations of single-point detection: Existing devices typically only have a single near-infrared spectrometer in the grading chamber, resulting in tobacco leaves being scanned only from a fixed angle. Since the shape, thickness, and surface characteristics of tobacco leaves can vary significantly, single-point detection cannot comprehensively capture the spectral information of the tobacco leaves, thus affecting the accuracy and consistency of grading.

[0005] 2. External light interference: The tobacco grading box needs to have openings at the input and output ends for tobacco leaves to pass through. However, the openings will allow external ambient light (such as natural light or artificial lighting) to enter the box. This stray light will interfere with the detection signal of the near-infrared spectrometer, especially for tobacco grading tasks that are sensitive to color and spectral reflectance, which may cause data deviation or misjudgment. Therefore, it is necessary to propose a tobacco grading device and its grading system to solve the above problems. Summary of the Invention

[0006] To overcome at least one of the defects (deficiencies) of the prior art described above, the present invention provides a tobacco leaf grading device and a grading system thereof.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a tobacco leaf grading device, comprising a tobacco leaf grading box, a high-definition industrial camera and multiple near-infrared spectrometers;

[0008] The tobacco grading box is equipped with a partition plate, which divides the tobacco grading box into an image capturing area and a near-infrared spectral recognition area. The high-definition industrial camera is set in the image capturing area, and multiple near-infrared spectrometers are movable and arranged around the near-infrared spectral recognition area through a displacement adjustment device.

[0009] The tobacco grading box has an inlet and an outlet on each side, with liftable blocking blocks on each end. A partition divides the box into an image capture area and a near-infrared spectral recognition area. Therefore, during the grading process, the high-definition industrial camera and the near-infrared spectrometer do not interfere with each other. Multiple near-infrared spectrometers are movable and arranged around the near-infrared spectral recognition area via a displacement adjustment device. These spectrometers can be combined into a matrix to perform near-infrared detection of the tobacco leaves from multiple angles and directions, facilitating more comprehensive acquisition of spectral information. Furthermore, the liftable blocking blocks at the inlet and outlet ensure complete darkness during grading, preventing external light interference and resulting in more accurate test results.

[0010] Furthermore, the displacement adjustment device includes a displacement mounting bracket, a horizontal rotation drive motor, multiple horizontal rotation rods, a horizontal moving guide rail, a horizontal moving clamping block, a connecting drive belt, a vertical mounting bracket, and a front and rear control mounting bracket.

[0011] The displacement mounting bracket is installed on the inner wall of the tobacco grading box, and multiple horizontal rotating rods are respectively installed at the junction of adjacent displacement mounting brackets;

[0012] The plurality of horizontal rotating rods are provided with a first rotating connecting seat and a second rotating connecting seat that rotate synchronously with the horizontal rotating rods. The horizontal rotating drive motor is provided with a third rotating connecting seat. The third rotating connecting seat is connected to the first rotating connecting seat through a transmission belt. The connecting drive belt is arranged around the second rotating connecting seat of the plurality of horizontal rotating rods.

[0013] The horizontal moving guide rail is set inside the displacement mounting bracket, and one end of the horizontal moving clamping block is sleeved on the horizontal moving guide rail, while the other end is clamped on the connecting drive belt.

[0014] The vertical mounting bracket is mounted on the horizontal moving clamping block, and the vertical mounting bracket is equipped with a vertical height adjuster. The front and rear control mounting bracket is mounted on the vertical mounting bracket with an adjustable height via the vertical height adjuster.

[0015] The front and rear control mounting brackets are equipped with front and rear control adjusters. The near-infrared spectrometer, whose front and rear distance can be adjusted via the front and rear control adjusters, is mounted on the front and rear control mounting brackets. Displacement mounting brackets are installed on the four inner walls of the tobacco grading box, and four horizontal rotating rods are positioned at the junctions between adjacent displacement mounting brackets. The connecting drive belt is mounted on the second rotating connecting seat of the four horizontal rotating rods. Furthermore, the horizontal rotation drive motor is connected to the horizontal rotating rods via a transmission belt. Therefore, when the horizontal rotation drive motor is driven, the four horizontal rotating rods rotate synchronously with the connecting drive belt. Since the vertical mounting bracket is interconnected with the connecting drive belt, the vertical mounting bracket can rotate synchronously with the connecting drive belt. The drive belt moves along one of the inner walls of the tobacco grading box. When it is necessary to perform all-round near-infrared detection on the tobacco leaves, displacement mounting brackets, vertical mounting brackets, front and rear control mounting brackets, and near-infrared spectrometers can be installed on the four inner walls of the tobacco grading box, except for the top and bottom. During near-infrared detection, multiple near-infrared spectrometers can be moved horizontally by a single horizontal rotation drive motor. The vertical height adjuster on the vertical mounting bracket and the front and rear control adjuster on the front and rear control mounting bracket can move the near-infrared spectrometers in the vertical height and front and rear directions, so that multiple near-infrared spectrometers can perform all-round detection on the tobacco leaves.

[0016] Furthermore, the horizontally moving clamping block includes a first clamping block, a first sleeve block, a second clamping block, a second sleeve block, a first limiting rod, a second limiting rod, and a linkage locking block;

[0017] Both the first sleeve block and the second sleeve block are provided with limiting inner grooves, and the first sleeve block and the second sleeve block are sleeved on the horizontal moving guide rail through the limiting inner grooves.

[0018] The first clamping block is installed on the first sleeve block, the second clamping block is installed on the second sleeve block, and the first clamping block and the second clamping block are respectively clamped on the connecting drive belt;

[0019] The first limiting rod is disposed on the first sleeve block, and the second limiting rod is disposed on the second sleeve block. The first limiting rod and the second limiting rod are connected to each other by a linkage locking block.

[0020] The vertical mounting bracket is connected to the first and second sets of clamping blocks on both sides. The first and second clamping blocks can be used to clamp the connecting drive belt and move it left and right along with the connecting drive belt. The first and second sets of clamping blocks are fitted onto the horizontal moving guide rail through the limiting inner groove, which facilitates the limiting of the left and right movement of the vertical mounting bracket. The first limiting rod, the second limiting rod and the linkage locking block can facilitate the connection and installation of the vertical mounting bracket, and also make the force on both sides of the vertical mounting bracket more even during installation.

[0021] Furthermore, the vertical height adjuster includes a height adjustment motor, a height adjustment drive wheel, a height adjustment driven wheel, a height adjustment belt, and a height adjustment slide rail;

[0022] Both the height adjustment drive wheel and the height adjustment driven wheel are located inside the vertical mounting bracket;

[0023] The height adjustment motor is connected to the height adjustment drive wheel, and the height adjustment drive wheel and the height adjustment driven wheel are connected by a height adjustment belt;

[0024] The height adjustment slide rail is set on the back side of the vertical mounting bracket. One end of the front and rear control mounting bracket is clamped to the height adjustment belt, and the other end is sleeved on the outside of the height adjustment slide rail. Since the height adjustment drive wheel and the height adjustment driven wheel are connected by the height adjustment belt, the height adjustment drive wheel is driven to rotate by the height adjustment motor, and the height adjustment driven wheel and the height adjustment belt will rotate synchronously. Therefore, the front and rear control mounting bracket can move up and down in the vertical mounting bracket.

[0025] Furthermore, the front and rear control adjuster includes a front and rear movement main gear, a front and rear movement driven gear, a front and rear movement drive belt, a front and rear movement motor, and a limiting aluminum profile;

[0026] The forward and backward moving main gear and the forward and backward moving driven gear are respectively installed in the forward and backward control mounting brackets, and the forward and backward moving motor is connected to the forward and backward moving main gear;

[0027] The forward and backward movement drive belt is sleeved on the outside of the forward and backward movement main gear and the forward and backward movement driven gear;

[0028] The limiting aluminum profile is mounted on the front and rear control mounting brackets. The limiting aluminum profile is provided with a limiting groove. The front and rear moving drive belt passes through the limiting groove of the limiting aluminum profile.

[0029] The limiting aluminum profile is provided with a front-to-back movement limiting protrusion. One end of the near-infrared spectrometer is clamped to the front-to-back movement drive belt, and the other end is movably sleeved on the front-to-back movement limiting protrusion. Through the setting of the front-to-back movement main gear, the front-to-back movement driven gear and the front-to-back movement drive belt, the near-infrared spectrometer can move back and forth on the front-to-back control mounting bracket. Since the limiting aluminum profile is set on the front-to-back control mounting bracket, the limiting aluminum profile can protect the front-to-back movement drive belt and limit the movement of the near-infrared spectrometer, and can facilitate the addition of the front-to-back movement limiting protrusion.

[0030] Furthermore, the blocking block includes an inlet blocking block, an outlet blocking block, a connecting cloth, a rotating pipe, a first steering shaft, a second steering shaft, and a rotation control motor;

[0031] The top of the tobacco grading box is provided with a receiving box with openings on both sides, and the top of the partition plate is set on the receiving box;

[0032] The rotary control motor is mounted on the housing, and the rotating tube is connected to the rotary control motor;

[0033] The connecting cloth is wound around the rotating tube in the middle. One side of the connecting cloth passes through an opening on one side of the receiving box, then passes around the first steering shaft and connects to the inlet end shielding block. The other side of the connecting cloth passes through an opening on the other side of the receiving box, then passes around the second steering shaft and connects to the outlet end shielding block. Since the receiving box, rotating tube, and rotary control motor are set on top of the tobacco grading box, after the tobacco leaves are moved into place, the rotary control motor drives the rotating tube to rotate. Driven by the inlet end shielding block and the outlet end shielding block, both sides of the connecting cloth pass around the first and second steering shafts respectively and then descend, so that the inlet end shielding block and the outlet end shielding block can block light at the inlet and outlet ends of the tobacco grading box, making the grading test of the tobacco leaves more accurate.

[0034] Furthermore, both the inlet and outlet blocking blocks are provided with inner grooves and movable limiting blocks. The tobacco grading box is provided with sensing probes and limiting grooves for matching the movable limiting blocks on the inner walls of the inlet and outlet ends. The sensing probes are connected to the rotary control motor. The inner grooves facilitate better connection between the inlet and outlet blocking blocks and the separating protrusions. The movable limiting blocks limit the movement of the inlet and outlet blocking blocks, ensuring that they can accurately connect with the separating protrusions after movement.

[0035] Furthermore, it also includes a fill light. The high-definition industrial camera is set in the center of the image shooting area, and the fill light is arranged around the high-definition industrial camera. By arranging the fill light around the outside of the high-definition industrial camera, it can play a role in supplementing light when the high-definition industrial camera shoots tobacco leaves.

[0036] In this invention, a tobacco grading system using a tobacco grading device is also disclosed, including a tobacco grading conveyor, an electrical control cabinet, a material distribution conveyor, a feeding conveyor, and a material return conveyor;

[0037] The tobacco grading device is installed on the tobacco grading conveyor, and the material distribution conveyor is installed below the discharge end of the tobacco grading conveyor.

[0038] The feeding conveyor and the unloading conveyor are respectively located on the front and rear sides of the distributing conveyor;

[0039] The electrical control cabinet is connected to the tobacco grading conveyor, the tobacco grading device, the sorting conveyor, the feeding conveyor, and the return conveyor. When tobacco farmers deliver tobacco leaves, they enter information into the electrical control cabinet, select the grade of the tobacco leaves to be delivered, and then place the tobacco leaves to be delivered on the tobacco grading conveyor and start the tobacco grading system. After the tobacco leaves are tested by the tobacco grading device, the tobacco leaves that meet the acceptance requirements are transported to the feeding conveyor via the sorting conveyor, and then to the logistics cart or subsequent equipment via the feeding conveyor. The tobacco leaves that fail the test are transported in the reverse direction via the sorting conveyor and then sent to the return conveyor for return.

[0040] Furthermore, the tobacco leaf grading conveyor includes a tobacco leaf sorting table, a tobacco leaf conveyor frame, a conveyor belt, a drive shaft, a driven shaft, and a conveyor motor connected to the drive shaft;

[0041] The tobacco sorting station is detachably connected to the tobacco conveyor frame;

[0042] The conveying motor is mounted on the frame of the tobacco conveyor, and the driving shaft and the driven shaft are respectively mounted on both sides of the frame of the tobacco conveyor.

[0043] One end of the conveyor belt is sleeved on the drive shaft, and the other end is set on the driven shaft. The conveyor belt is provided with a dividing protrusion, the size of which matches the inner groove on the inlet end blocking block and the outlet end blocking block.

[0044] Sensors are installed on the dividing ridges, and these sensors interact with induction probes on the inner walls of the tobacco grading box at the inlet and outlet ends. When tobacco farmers deliver tobacco leaves, they can first place the leaves on the tobacco sorting table, and then feed them in batches onto the conveyor belt with the dividing ridges. The distance between adjacent dividing ridges is the same as the distance between the front and rear ends of the image capturing area and the front and rear ends of the near-infrared spectral recognition area. Because sensors are installed on the dividing ridges, and induction probes are installed on the inner walls of the inlet and outlet ends of the tobacco grading box, when the tobacco leaves are moved into position, the induction probes at the inlet and outlet ends of the tobacco grading box interact with the sensors on the dividing ridges. At this time, the induction probes send signals to the rotary control motor, which rotates. The inlet end blocking block descends and presses against the dividing ridge at the inlet end of the tobacco grading box, and the outlet end blocking block descends and presses against the dividing ridge at the outlet end of the tobacco grading box, so that the tobacco grading box is in a dark environment during tobacco grading.

[0045] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0046] The tobacco grading device disclosed in this invention divides the tobacco grading box into an image capturing area and a near-infrared spectral recognition area using a partition plate. Therefore, during the tobacco grading process, the high-definition industrial camera and the near-infrared spectrometer do not interfere with each other. Since multiple near-infrared spectrometers are movable and arranged around the near-infrared spectral recognition area via a displacement adjustment device, they can be combined into a matrix to perform near-infrared detection on the tobacco leaves from multiple directions and angles, facilitating more comprehensive acquisition of the spectral information of the tobacco leaves. Furthermore, since there are liftable blocking blocks at the inlet and outlet of the tobacco grading box, after the tobacco leaves enter the grading box, the blocking blocks can be lowered to block the inlet and outlet of the tobacco grading box. Therefore, the tobacco grading box is in a completely dark environment during grading and detection, and is not affected by external light, resulting in more accurate detection results. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the tobacco grading box in this invention.

[0048] Figure 2 This is a schematic diagram of the cross-sectional structure of the tobacco grading box in this invention.

[0049] Figure 3 This is a cross-sectional structural diagram of the tobacco grading box from another angle in this invention.

[0050] Figure 4 This is a schematic diagram of the displacement adjustment device in this invention.

[0051] Figure 5 This is a structural schematic diagram of the displacement adjustment device in this invention from another angle.

[0052] Figure 6 This is a schematic diagram of the structure of the horizontally moving clamping block in this invention.

[0053] Figure 7 This is a schematic diagram of the vertical mounting bracket in this invention.

[0054] Figure 8 This is a schematic diagram of the vertical mounting bracket in this invention from another angle.

[0055] Figure 9 This is a schematic diagram of the front and rear control mounting bracket in this invention.

[0056] Figure 10 This is a schematic diagram of the front and rear control mounting bracket from another angle in this invention.

[0057] Figure 11 This is a schematic diagram of the structure in this invention where the shielding block is installed inside the tobacco grading box.

[0058] Figure 12 This is a schematic diagram of the tobacco grading system in this invention.

[0059] In the diagram, 1 is the tobacco grading box, 2 is the high-definition industrial camera, 3 is the near-infrared spectrometer, 4 is the partition plate, 5 is the image capturing area, 6 is the near-infrared spectral recognition area, 7 is the displacement adjustment device, 8 is the inlet end, 9 is the outlet end, 10 is the shielding block, 11 is the displacement mounting bracket, 12 is the horizontal rotation drive motor, 13 is the horizontal rotation rod, 14 is the horizontal moving guide rail, 15 is the horizontal moving clamping block, 16 is the connecting drive belt, 17 is the vertical mounting bracket, and 18 is the front and rear... 19 is the control mounting bracket; 20 is the first rotating connecting seat; 21 is the second rotating connecting seat; 22 is the third rotating connecting seat; 23 is the transmission belt; 24 is the vertical height adjuster; 25 is the front and rear control adjuster; 26 is the first clamping block; 27 is the first set-top block; 28 is the second clamping block; 29 is the first limit rod; 30 is the second limit rod; 31 is the linkage locking block; 32 is the limit inner groove; 33 is the height adjustment motor; 34 is the height adjustment drive wheel. 35 is the height adjustment driven wheel; 36 is the height adjustment belt; 37 is the height adjustment slide rail; 38 is the main gear for forward and backward movement; 39 is the driven gear for forward and backward movement; 40 is the drive belt for forward and backward movement; 41 is the motor for forward and backward movement; 42 is the limiting aluminum profile; 43 is the limiting groove; 44 is the limiting protrusion for forward and backward movement; 45 is the inlet end blocking block; 46 is the outlet end blocking block; 47 is the connecting cloth; 48 is the rotating tube; 49 is the first steering shaft; 50 is the second steering shaft; 51 is the rotation control motor. 52 is the receiving box, 53 is the inner groove, 54 is the moving limit block, 55 is the sensing probe, 56 is the limit groove, 57 is the supplementary light, 58 is the tobacco leaf grading conveyor, 59 is the electrical control cabinet, 60 is the material distribution conveyor, 61 is the feeding conveyor, 62 is the unloading conveyor, 63 is the tobacco leaf sorting table, 64 is the tobacco leaf conveyor frame, 65 is the conveyor belt, 66 is the drive shaft, 67 is the driven shaft, 68 is the conveyor motor, 69 is the dividing ridge, and 70 is the sensor. Detailed Implementation

[0060] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0061] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The technical solution of this invention will be further described below with reference to the accompanying drawings and embodiments.

[0062] like Figure 1-3 As shown, a tobacco grading device includes a tobacco grading box 1, a high-definition industrial camera 2, and multiple near-infrared spectrometers 3. The tobacco grading box 1 is equipped with a partition plate 4, which divides the tobacco grading box 1 into an image capturing area 5 and a near-infrared spectral recognition area 6. The high-definition industrial camera 2 is located in the image capturing area 5, and the multiple near-infrared spectrometers 3 are movably arranged around the near-infrared spectral recognition area 6 via a displacement adjustment device 7. The tobacco grading box 1 has an inlet end 8 and an outlet end 9 on both sides, and each inlet end 8 and outlet end 9 is equipped with a liftable shielding block 10. The partition plate 4 divides the tobacco grading box 1 into the image capturing area 5 and the near-infrared spectral recognition area 6. Therefore, during the tobacco grading process, the high-definition industrial camera 2 and the near-infrared spectrometers 3 work in parallel. They will not interfere with each other. Since multiple near-infrared spectrometers 3 are movable and arranged around the near-infrared spectral recognition area 6 through the displacement adjustment device 7, multiple near-infrared spectrometers 3 can be combined into a matrix to perform near-infrared detection on tobacco leaves from multiple directions and angles, which facilitates more comprehensive collection of spectral information of tobacco leaves. Since there are liftable blocking blocks 10 on the inlet end 8 and outlet end 9 of the tobacco grading box 1, after the tobacco leaves enter the tobacco grading box 1, the blocking blocks 10 can be lowered so that the blocking blocks 10 can block the inlet end 8 and outlet end 9 of the tobacco grading box 1. Therefore, the tobacco grading box 1 is in a completely dark environment during grading and detection, and will not be affected by external light, making the detection results more accurate.

[0063] like Figure 4-5As shown, the displacement adjustment device 7 includes a displacement mounting bracket 11, a horizontal rotation drive motor 12, multiple horizontal rotation rods 13, a horizontal moving guide rail 14, a horizontal moving clamping block 15, a connecting drive belt 16, a vertical mounting bracket 17, and a front and rear control mounting bracket 18. The displacement mounting bracket 11 is installed on the inner wall of the tobacco grading box 1, and the multiple horizontal rotation rods 13 are respectively installed at the junction of adjacent displacement mounting brackets 11. The multiple horizontal rotation rods 13 are provided with a first rotating connecting seat 19 and a second rotating connecting seat 20 that rotate synchronously with the horizontal rotation rods 13. The horizontal rotation drive motor 12 is provided with a third rotating connecting seat 21, and the third rotating connecting seat 21 is connected to the first rotating connecting seat 19 through a transmission belt 22. A drive belt 16 is wound around a second rotating connecting seat 20 of multiple horizontal rotating rods 13; a horizontal moving guide rail 14 is set inside the displacement mounting bracket 11; one end of a horizontal moving clamping block 15 is sleeved on the horizontal moving guide rail 14, and the other end is clamped on the drive belt 16; a vertical mounting bracket 17 is set on the horizontal moving clamping block 15; a vertical height adjuster 23 is provided inside the vertical mounting bracket 17; a front and rear control mounting bracket 18 is set on the vertical mounting bracket 17 with adjustable height via the vertical height adjuster 23; a front and rear control adjuster 24 is provided inside the front and rear control mounting bracket 18; the front and rear distance of the near-infrared spectrometer 3 can be adjusted via the front and rear control adjuster 24. On the front and rear control mounting brackets 18, displacement mounting brackets 11 are installed on the four inner walls of the tobacco grading box 1, and four horizontal rotating rods 13 are installed at the junctions between adjacent displacement mounting brackets 11. The connecting drive belt 16 is installed on the second rotating connecting seat 20 of the four horizontal rotating rods 13. Furthermore, the horizontal rotation drive motor 12 is connected to the horizontal rotating rods 13 via a transmission belt 22. Therefore, when the horizontal rotation drive motor 12 is driven, the four horizontal rotating rods 13 rotate synchronously with the connecting drive belt 16. Since the vertical mounting bracket 17 is interconnected with the connecting drive belt 16, the vertical mounting bracket 17 can move along with the connecting drive belt 16 in one of the tobacco grading boxes 1. When near-infrared detection of tobacco leaves is required, displacement mounting brackets 11, vertical mounting brackets 17, front and rear control mounting brackets 18, and near-infrared spectrometers 3 can be installed on the four inner walls of the tobacco grading box 1, excluding the top and bottom. During near-infrared detection, multiple near-infrared spectrometers 3 can be moved horizontally by a single horizontal rotation drive motor 12. The vertical height adjuster 23 on the vertical mounting bracket 17 and the front and rear control adjuster 24 on the front and rear control mounting bracket 18 can move the near-infrared spectrometers 3 in the vertical height and front and rear directions, facilitating comprehensive detection of tobacco leaves by multiple near-infrared spectrometers 3.

[0064] like Figure 6 As shown, the horizontal moving clamping block 15 includes a first clamping block 25, a first sleeve block 26, a second clamping block 27, a second sleeve block 28, a first limiting rod 29, a second limiting rod 30, and a linkage locking block 31. Both the first sleeve block 26 and the second sleeve block 28 are provided with limiting inner grooves 32, which are sleeved onto the horizontal moving guide rail 14. The first clamping block 25 is mounted on the first sleeve block 26, and the second clamping block 27 is mounted on the second sleeve block 28. The first clamping block 25 and the second clamping block 27 are respectively locked onto the connecting drive belt 16. The first limiting rod 29 is disposed on the first sleeve block 26, and the second limiting rod 30 is disposed on the second sleeve block 28. The first limiting rod 29 and the second limiting rod 30 are linked and locked together. The rods 30 are interconnected by a linkage locking block 31. The two sides of the vertical mounting bracket 17 are connected to the first set block 26 and the second set block 28 respectively. The first clamping block 25 and the second clamping block 27 can be used to clamp the connecting drive belt 16 and move it left and right. The first set block 26 and the second set block 28 are fitted onto the horizontal moving guide rail 14 through the limiting inner groove 32, which facilitates the limiting of the left and right movement of the vertical mounting bracket 17. The first limiting rod 29, the second limiting rod 30 and the linkage locking block 31 can facilitate the connection and installation of the vertical mounting bracket 17, and also make the force on both sides of the vertical mounting bracket 17 more even during installation.

[0065] like Figure 7-8 As shown, the vertical height adjuster 23 includes a height adjusting motor 33, a height adjusting drive wheel 34, a height adjusting driven wheel 35, a height adjusting belt 36, and a height adjusting slide rail 37. The height adjusting drive wheel 34 and the height adjusting driven wheel 35 are both located inside the vertical mounting bracket 17. The height adjusting motor 33 is connected to the height adjusting drive wheel 34, and the height adjusting drive wheel 34 and the height adjusting driven wheel 35 are connected by the height adjusting belt 36. The height adjusting slide rail 37 is located on the back side of the vertical mounting bracket 17. One end of the front and rear control mounting bracket 18 is clamped to the height adjusting belt 36, and the other end is sleeved on the outside of the height adjusting slide rail 37. Since the height adjusting drive wheel 34 and the height adjusting driven wheel 35 are connected by the height adjusting belt 36, the height adjusting drive wheel 34 is driven to rotate by the height adjusting motor 33, and the height adjusting driven wheel 35 and the height adjusting belt 36 rotate synchronously. Therefore, the front and rear control mounting bracket 18 can move up and down within the vertical mounting bracket 17.

[0066] like Figure 9-10As shown, the front and rear control regulator 24 includes a front and rear moving main gear 38, a front and rear moving driven gear 39, a front and rear moving drive belt 40, a front and rear moving motor 41, and a limiting aluminum profile 42. The front and rear moving main gear 38 and the front and rear moving driven gear 39 are respectively disposed within the front and rear control mounting bracket 18, and the front and rear moving motor 41 is connected to the front and rear moving main gear 38. The front and rear moving drive belt 40 is sleeved on the outside of the front and rear moving main gear 38 and the front and rear moving driven gear 39. The limiting aluminum profile 42 is disposed on the front and rear control mounting bracket 18, and the limiting aluminum profile 42 is provided with a limiting groove 43, through which the front and rear moving drive belt 40 passes. The aluminum profile is provided with a front-to-back movement limiting protrusion 44. One end of the near-infrared spectrometer 3 is clamped to the front-to-back movement drive belt 40, and the other end is movably sleeved on the front-to-back movement limiting protrusion 44. Through the setting of the front-to-back movement main gear 38, the front-to-back movement driven gear 39 and the front-to-back movement drive belt 40, the near-infrared spectrometer 3 can move back and forth on the front-to-back control mounting bracket 18. Since the limiting aluminum profile 42 is set on the front-to-back control mounting bracket 18, the limiting aluminum profile 42 can protect the front-to-back movement drive belt 40 and limit the movement of the near-infrared spectrometer 3, and facilitates the addition of the front-to-back movement limiting protrusion 44.

[0067] like Figure 11As shown, the shielding block 10 includes an inlet shielding block 45, an outlet shielding block 46, a connecting cloth 47, a rotating pipe 48, a first steering shaft 49, a second steering shaft 50, and a rotary control motor 51. The top of the tobacco grading box 1 is provided with a receiving box 52 with openings on both sides, and the top of the partition plate 4 is set on the receiving box 52. The rotary control motor 51 is set on the receiving box 52, and the rotating pipe 48 is connected to the rotary control motor 51. The middle part of the connecting cloth 47 is wrapped around the rotating pipe 48, and one side of the connecting cloth 47 passes through the opening on one side of the receiving box 52 and then wraps around the first steering shaft. After 49, it connects to the inlet end blocking block 45. The other side of the connecting cloth 47 passes through the opening on the other side of the receiving box 52, then goes around the second steering shaft 50 and connects to the outlet end blocking block 46. Since the receiving box 52, the rotating tube 48 and the rotary control motor 51 are set on the top of the tobacco grading box 1, after the tobacco leaves are moved into place, the rotary control motor 51 drives the rotating tube 48 to rotate. Driven by the inlet end blocking block 45 and the outlet end blocking block 46, the two sides of the connecting cloth 47 go around the first steering shaft 49 and the second steering shaft 50 respectively and then descend, so that the inlet end blocking block 47 is blocked. Block 45 and outlet end shielding block 46 can block light at the inlet end 8 and outlet end 9 of the tobacco grading box 1, making the grading test of tobacco leaves more accurate. Both inlet end shielding block 45 and outlet end shielding block 46 are provided with an inner groove 53 and a moving limit block 54. The inner wall of the tobacco grading box 1 at the inlet end 8 and outlet end 9 is provided with a sensor 55 and a limiting groove 56 for matching the moving limit block 54. The sensor 55 is connected to a rotary control motor 51. The inner groove 53 facilitates the movement of the inlet end shielding block 45 and outlet end shielding block 46. The 6 can better connect with the dividing ridge, while the setting of the moving limit block 54 can limit the movement of the inlet end blocking block 45 and the outlet end blocking block 46, ensuring that the inlet end blocking block 45 and the outlet end blocking block 46 can accurately connect with the dividing ridge after movement. In addition, it also includes a supplementary light 57. The high-definition industrial camera 2 is set in the center of the image shooting area 5, and the supplementary light 57 is set around the high-definition industrial camera 2. By setting the supplementary light 57 around the outside of the high-definition industrial camera 2, it can play a supplementary lighting role when the high-definition industrial camera 2 shoots tobacco leaves.

[0068] like Figure 12As shown, this invention also discloses a tobacco grading system using a tobacco grading device, comprising a tobacco grading conveyor 58, an electrical control cabinet 59, a material distribution conveyor 60, a feeding conveyor 61, and a return conveyor 62; the tobacco grading device is mounted on the tobacco grading conveyor 58, and the material distribution conveyor 60 is positioned below the discharge end of the tobacco grading conveyor 58; the feeding conveyor 61 and the return conveyor 62 are respectively positioned on the front and rear sides of the material distribution conveyor 60; the electrical control cabinet... Control cabinet 59 is connected to tobacco leaf grading conveyor 58, tobacco leaf grading device, material distribution conveyor 60, feeding conveyor 61, and unloading conveyor 62. When tobacco farmers deliver tobacco leaves, they enter information into control cabinet 59, select the grade of the tobacco leaves to be delivered, and then place the tobacco leaves to be delivered on tobacco leaf grading conveyor 58 and start the tobacco leaf grading system. After the tobacco leaves are tested by the tobacco leaf grading device, the tobacco leaves that meet the acceptance requirements are transported through material distribution conveyor 60. The tobacco leaves are fed into the feeding conveyor 61, and then transported by the feeding conveyor 61 to the logistics cart or subsequent equipment. Tobacco leaves that fail the inspection are reverse-transported by the sorting conveyor 60 and then sent to the return conveyor 62 for return. The tobacco leaf grading conveyor 58 includes a tobacco leaf sorting table 63, a tobacco leaf conveyor frame 64, a conveyor belt 65, a drive shaft 66, a driven shaft 67, and a conveyor motor 68 connected to the drive shaft 66. The tobacco leaf sorting table 63 and the tobacco... The tobacco leaf conveyor frame 64 is detachably connected; the conveyor motor 68 is mounted on the tobacco leaf conveyor frame 64, and the drive shaft 66 and the driven shaft 67 are respectively mounted on both sides of the tobacco leaf conveyor frame 64; one end of the conveyor belt 65 is sleeved on the drive shaft 66, and the other end is mounted on the driven shaft 67. The conveyor belt 65 is provided with a separating protrusion 69, and the size of the separating protrusion 69 matches the inner groove 53 on the inlet end blocking block 45 and the outlet end blocking block 46.Sensors 70 are installed on the dividing ridges 69. These sensors 70 interact with induction probes 55 located on the inner walls of the tobacco grading box 1 at the inlet end 8 and outlet end 9. When tobacco farmers deliver their tobacco leaves, they can first place the leaves on the tobacco sorting table 63, and then feed them in batches onto the conveyor belt 65 equipped with the dividing ridges 69. The distance between adjacent dividing ridges 69 is the same as the distance between the front and rear ends of the image capturing area 5 and the front and rear ends of the near-infrared spectral recognition area 6. Because sensors 70 are installed on the dividing ridges 69, the sensors 70 at the inlet end 8 and outlet end 9 of the tobacco grading box 1 interact with the induction probes 55 located on the inner walls of the tobacco grading box 1. A sensor 55 is installed on the inner wall of the outlet end 9. Therefore, when the tobacco leaves are moved into place, the sensor 55 on the inlet end 8 and the outlet end 9 of the tobacco grading box 1 senses each other with the sensor 70 on the separating ridge 69. At this time, the sensor 55 sends a signal to the rotary control motor 51, which rotates. The inlet end blocking block 45 then descends and presses against the separating ridge 69 on the inlet end 8 of the tobacco grading box 1, and the outlet end blocking block 46 descends and presses against the separating ridge 69 on the outlet end 9 of the tobacco grading box 1, thus placing the tobacco grading box 1 in a dark environment during tobacco grading.

[0069] Example

[0070] In this embodiment, when tobacco farmers deliver tobacco leaves, they can first place the leaves on the tobacco leaf sorting table, enter information in the electrical control cabinet, select the grade of the tobacco leaves to be delivered, and then place the tobacco leaves to be delivered on the tobacco leaf grading conveyor and start the tobacco leaf grading system. After the tobacco leaves are tested by the tobacco leaf grading device, the tobacco leaves that meet the acceptance requirements are transported to the feeding conveyor via the sorting conveyor, and then to the logistics cart or subsequent equipment via the feeding conveyor. The tobacco leaves that fail the test are transported in the reverse direction via the sorting conveyor and then sent to the return conveyor for return. The distance between adjacent separating convex strips is relative to the front and rear ends of the image capturing area. The distances at both ends of the near-infrared spectral recognition area are the same. Since sensors are installed on the dividing ridges and induction probes are installed on the inner walls of the inlet and outlet ends of the tobacco grading box, when the tobacco leaves are moved into place, the induction probes on the inlet and outlet ends of the tobacco grading box sense each other with the sensors on the dividing ridges. At this time, the induction probes send signals to the rotary control motor, and the rotary control motor rotates. At this time, the inlet end blocking block presses against the dividing ridge at the inlet end of the tobacco grading box after descending, and the outlet end blocking block presses against the dividing ridge at the outlet end of the tobacco grading box after descending, so that the tobacco grading box is in a dark environment when the tobacco leaves are graded.

[0071] In the tobacco grading device, displacement mounting brackets are installed on the four inner walls of the tobacco grading box, and four horizontal rotating rods are positioned at the junctions between adjacent displacement mounting brackets. The connecting drive belt is mounted on the second rotating connecting seat of each of the four horizontal rotating rods. Furthermore, the horizontal rotation drive motor is connected to the horizontal rotating rods via a transmission belt. Therefore, when the horizontal rotation drive motor is activated, the four horizontal rotating rods rotate synchronously with the connecting drive belt. Since the vertical mounting bracket is interconnected with the connecting drive belt, the vertical mounting bracket can move along one of the inner walls of the tobacco grading box along with the connecting drive belt. When conducting comprehensive near-infrared testing of tobacco leaves, displacement mounting brackets, vertical mounting brackets, front and rear control mounting brackets, and near-infrared spectrometers can be installed on all four inner walls of the tobacco grading box, except for the top and bottom. During near-infrared testing, multiple near-infrared spectrometers can be moved horizontally using only a single horizontal rotation drive motor. The vertical height adjuster on the vertical mounting bracket and the front and rear control adjuster on the front and rear control mounting bracket allow the near-infrared spectrometers to be moved vertically and horizontally, facilitating comprehensive testing of the tobacco leaves by multiple near-infrared spectrometers.

[0072] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of the present invention are merely examples to clearly illustrate the invention and are not intended to limit the implementation of the invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of this invention.

Claims

1. A tobacco leaf grading device, comprising a tobacco leaf grading box, a high-definition industrial camera, and multiple near-infrared spectrometers, characterized in that: The tobacco grading box is equipped with a partition plate, which divides the tobacco grading box into an image capturing area and a near-infrared spectral recognition area. The high-definition industrial camera is set in the image capturing area, and multiple near-infrared spectrometers are movable and arranged around the near-infrared spectral recognition area through a displacement adjustment device. The tobacco grading box has an inlet and an outlet on both sides, and each inlet and outlet is equipped with a liftable shield.

2. The tobacco leaf grading device according to claim 1, characterized in that: The displacement adjustment device includes a displacement mounting bracket, a horizontal rotation drive motor, multiple horizontal rotation rods, a horizontal moving guide rail, a horizontal moving clamping block, a connecting drive belt, a vertical mounting bracket, and a front and rear control mounting bracket. The displacement mounting bracket is installed on the inner wall of the tobacco grading box, and multiple horizontal rotating rods are respectively installed at the junction of adjacent displacement mounting brackets; The plurality of horizontal rotating rods are provided with a first rotating connecting seat and a second rotating connecting seat that rotate synchronously with the horizontal rotating rods. The horizontal rotating drive motor is provided with a third rotating connecting seat. The third rotating connecting seat is connected to the first rotating connecting seat through a transmission belt. The connecting drive belt is arranged around the second rotating connecting seat of the plurality of horizontal rotating rods. The horizontal moving guide rail is set inside the displacement mounting bracket, and one end of the horizontal moving clamping block is sleeved on the horizontal moving guide rail, while the other end is clamped on the connecting drive belt. The vertical mounting bracket is mounted on the horizontal moving clamping block, and the vertical mounting bracket is equipped with a vertical height adjuster. The front and rear control mounting bracket is mounted on the vertical mounting bracket with an adjustable height via the vertical height adjuster. The front and rear control mounting bracket is equipped with a front and rear control adjuster, and the near-infrared spectrometer is mounted on the front and rear control mounting bracket with adjustable front and rear distance via the front and rear control adjuster.

3. The tobacco leaf grading device according to claim 2, characterized in that: The horizontally moving clamping block includes a first clamping block, a first sleeve block, a second clamping block, a second sleeve block, a first limiting rod, a second limiting rod, and a linkage locking block; Both the first sleeve block and the second sleeve block are provided with limiting inner grooves, and the first sleeve block and the second sleeve block are sleeved on the horizontal moving guide rail through the limiting inner grooves. The first clamping block is installed on the first sleeve block, the second clamping block is installed on the second sleeve block, and the first clamping block and the second clamping block are respectively clamped on the connecting drive belt; The first limiting rod is disposed on the first sleeve block, and the second limiting rod is disposed on the second sleeve block. The first limiting rod and the second limiting rod are connected to each other by a linkage locking block. The two sides of the vertical mounting bracket are respectively connected to the first and second mounting blocks.

4. The tobacco leaf grading device according to claim 2, characterized in that: The vertical height adjuster includes a height adjustment motor, a height adjustment drive wheel, a height adjustment driven wheel, a height adjustment belt, and a height adjustment slide rail; Both the height adjustment drive wheel and the height adjustment driven wheel are located inside the vertical mounting bracket; The height adjustment motor is connected to the height adjustment drive wheel, and the height adjustment drive wheel and the height adjustment driven wheel are connected by a height adjustment belt; The height adjustment slide rail is set on the back side of the vertical mounting bracket. One end of the front and rear control mounting bracket is clamped to the height adjustment belt, and the other end is sleeved on the outside of the height adjustment slide rail.

5. The tobacco leaf grading device according to claim 2, characterized in that: The front and rear control regulator includes a front and rear movement main gear, a front and rear movement driven gear, a front and rear movement drive belt, a front and rear movement motor, and a limiting aluminum profile. The forward and backward moving main gear and the forward and backward moving driven gear are respectively installed in the forward and backward control mounting brackets, and the forward and backward moving motor is connected to the forward and backward moving main gear; The forward and backward movement drive belt is sleeved on the outside of the forward and backward movement main gear and the forward and backward movement driven gear; The limiting aluminum profile is mounted on the front and rear control mounting brackets. The limiting aluminum profile is provided with a limiting groove. The front and rear moving drive belt passes through the limiting groove of the limiting aluminum profile. The limiting aluminum profile is provided with a front-to-back movement limiting protrusion. One end of the near-infrared spectrometer is clamped to the front-to-back movement driving belt, and the other end is movably sleeved on the front-to-back movement limiting protrusion.

6. The tobacco leaf grading device according to claim 1, characterized in that: The shielding block includes an inlet shielding block, an outlet shielding block, a connecting cloth, a rotating pipe, a first steering shaft, a second steering shaft, and a rotation control motor; The top of the tobacco grading box is provided with a receiving box with openings on both sides, and the top of the partition plate is set on the receiving box; The rotary control motor is mounted on the housing, and the rotating tube is connected to the rotary control motor; The middle part of the connecting cloth is wrapped around the rotating tube. One side of the connecting cloth passes through the opening on one side of the receiving box, then passes through the first steering shaft and connects to the inlet end blocking block. The other side of the connecting cloth passes through the opening on the other side of the receiving box, then passes through the second steering shaft and connects to the outlet end blocking block.

7. The tobacco leaf grading device according to claim 6, characterized in that: Both the inlet end blocking block and the outlet end blocking block are provided with inner grooves and movable limiting blocks. The tobacco grading box is provided with sensing probes and limiting grooves for matching the movable limiting blocks on the inner walls of the inlet end and the outlet end. The sensing probes are connected to the rotary control motor.

8. The tobacco leaf grading device according to claim 1, characterized in that: It also includes a fill light, with the high-definition industrial camera positioned in the center of the image capture area and the fill light arranged around the high-definition industrial camera.

9. A tobacco grading system using the tobacco grading device according to any one of claims 1-8, comprising a tobacco grading conveyor, an electrical control cabinet, a material distribution conveyor, a feeding conveyor, and a return conveyor, characterized in that: The tobacco grading device is installed on the tobacco grading conveyor, and the material distribution conveyor is installed below the discharge end of the tobacco grading conveyor. The feeding conveyor and the unloading conveyor are respectively located on the front and rear sides of the distributing conveyor; The electrical control cabinet is connected to the tobacco grading conveyor, the tobacco grading device, the material distribution conveyor, the feeding conveyor, and the unloading conveyor.

10. The tobacco grading system according to claim 9, characterized in that: The tobacco leaf grading conveyor includes a tobacco leaf sorting table, a tobacco leaf conveyor frame, a conveyor belt, a drive shaft, a driven shaft, and a conveyor motor connected to the drive shaft. The tobacco sorting station is detachably connected to the tobacco conveyor frame; The conveying motor is mounted on the frame of the tobacco conveyor, and the driving shaft and the driven shaft are respectively mounted on both sides of the frame of the tobacco conveyor. One end of the conveyor belt is sleeved on the drive shaft, and the other end is set on the driven shaft. The conveyor belt is provided with a dividing protrusion, the size of which matches the inner groove on the inlet end blocking block and the outlet end blocking block. The dividing ridge is equipped with a sensor, which interacts with the sensing probes on the inner walls of the tobacco grading box at the inlet and outlet ends.

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