A method and device for online near-infrared advance modeling of leaf threshing and re-drying

Abstract

The present invention discloses an online near-infrared advance modeling method and device for leaf threshing and redrying, wherein tobacco leaves are placed flatly in a tray, the tray is smoothly fed from the feed port of the tray bin lifting mechanism, and the gantry module places the tray in different tray positions according to the setting. When collecting online spectra, the mechanical arm of the gantry module takes out the tray in the tray bin as required and transports it to the tray bin lifting mechanism. The tray bin lifting mechanism lifts the tray out of the upper end of the frame to the grabbing station of the three-axis mechanical arm; after the three-axis mechanical arm grabs and transfers the tray and places it on the rotating table mechanism, the controller of the rotating table mechanism is turned on, the motor drives the tray on the rotating table to rotate, and the online near-infrared spectrometer starts to collect the online spectrum of the tobacco leaves. After the tobacco leaf spectrum is collected, the tray on the rotating table is taken out and returned along the original route, and the mechanical arm of the gantry module puts the tray back to the original position of the tray in the tray bin. The present invention realizes standardized sampling modeling operations and further improves the homogenization processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of leaf threshing and redrying processing technology, and in particular to an online near-infrared advance modeling method and device for leaf threshing and redrying. Background Art

[0002] With the continuous development of tobacco leaf production and processing technology, tobacco industry enterprises have put forward higher and higher technical requirements for leaf threshing and redrying enterprises. Among them, homogenization processing has become a new technical requirement put forward by the industry for leaf threshing and redrying enterprises in recent years. In the homogenization process, the establishment of an online near-infrared chemical composition prediction model has an important impact on homogenization regulation. The traditional method for establishing an online near-infrared chemical composition model is: online manual sampling-obtaining online spectrum-detecting sample chemical composition-establishing an online near-infrared model with one-to-one correspondence between spectral chemical values. This method has a serious hysteresis problem. After manual sampling, laboratory testing still takes 2-3 days, and the tobacco leaves at the time of sampling have entered the production link. The re-established online near-infrared model cannot be applied to the materials at the time of sampling, resulting in the difficulty in improving the accuracy of the online chemical composition prediction model. Moreover, in the manual sampling method, each leaf laying line must be sampled, the sampling volume is large, and the samples selected between different lines are very different, resulting in large differences in modeling between different lines, which buries quality risks for homogenization processing. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an online near-infrared advance modeling method and device for leaf threshing and re-drying, solve the problems of model differences and modeling lag between lines, compress the modeling process, realize standardized sampling and modeling operations, and further improve the homogenization processing efficiency.

[0004] The technical solution adopted by the present invention is:

[0005] An online near infrared advance modeling method for leaf threshing and redrying comprises the following steps:

[0006] Step 1: Analyze the processing batches of different industrial enterprises over the years, and list the modeling needs to form a sampling table according to the requirements of different industrial enterprises or the needs of the leaf threshing and redrying enterprises themselves;

[0007] Step 2: Take samples in advance in the original tobacco warehouse according to the sampling table, and label each sample individually;

[0008] Step 3: Send the selected samples to the laboratory for sample preparation and store them separately with the labels;

[0009] Step 4: Place the processed tobacco leaf samples in different tray positions according to the sample order;

[0010] Step 5, smoothly transport the sample to the online near-infrared light source, and rotate the sampling tray to collect the online spectrum of the tobacco leaf sample online;

[0011] Step 6, recovering the collected tobacco leaf samples;

[0012] Step 7, preparing the recovered sample into tobacco leaf powder;

[0013] Step 8, sending the sample powder to the laboratory and using laboratory instruments and equipment to detect its chemical composition value;

[0014] Step 9, the online spectrum of the sample is matched one by one with the laboratory chemical composition value detected, and the online near-infrared model is established using the partial least squares method;

[0015] Step 10, finally, the established chemical composition model is transferred to the online near-infrared spectrometer for online application of the model.

[0016] Furthermore, as a preferred implementation, the modeling in step 1 needs to include information on tobacco grade, variety, and origin.

[0017] Furthermore, as a preferred embodiment, each sample is processed by two cuts and three sections during sample preparation in step 3.

[0018] Furthermore, as a preferred embodiment, the sample recovered in step 7 is separated from the stems and leaves, dried, and crushed to prepare 40-mesh tobacco powder.

[0019] An online near-infrared advance modeling device for leaf threshing and redrying comprises a pallet bin lifting mechanism, a three-axis robotic arm, a rotating table mechanism and an infrared spectroscopy mechanism. The pallet bin lifting mechanism comprises a frame, in which a pallet bin, a three-axis gantry module and a lifting device are arranged. The pallet bin and the lifting device are arranged on the same side of the three-axis gantry module. The pallet bin has a plurality of different pallet bins separated in a vertical direction. The three-axis gantry module is used to take out pallets from various bins of the pallet bin and place them on a pallet seat at the top of the lifting device. The lifting device has a lifting electric cylinder and the pallet seat is lifted and lowered by the lifting electric cylinder. A discharge port is arranged at the upper end of the frame corresponding to the lifting device. The three-axis robotic arm is installed on the pallet bin lifting mechanism and Between the rotating table mechanisms, a three-axis robotic arm grabs the tray extending out of the discharge port and transfers it to the rotating table mechanism. The rotating table mechanism includes a workbench, a motor is provided on the bottom surface of the workbench, and the output shaft of the motor extends out of the upper surface of the workbench and is arranged. A rotating table base is sleeved on the output shaft and rotates with the output shaft. A latch protrudes from the rotating table base and is fixed with a convenient bayonet at the bottom of the tray through the latch. The infrared spectrum mechanism includes a lens holder and an infrared spectrometer lens. The lens holder is arranged next to the rotating table mechanism. The infrared spectrometer lens is fixedly mounted on the lens holder and the infrared spectrometer lens is aligned with the tray placed on the rotating table base. The infrared spectrometer lens collects online spectra of tobacco leaf samples online.

[0020] Further, as a preferred embodiment, the three-axis gantry module includes an H-axis, X-axis, and Y-axis three-axis slide assembly, the H-axis slide assembly is connected by an H-axis servo motor connected to a dual-output reduction box, connected to the output shaft through a coupling, and then connected to two sets of H-axis sliders through a coupling; the H-axis servo motor drives the H-axis slider to move up and down, and the H-axis servo motor uses a dual-output reduction box to drive the two H-axis sliders to move synchronously; an L-shaped bracket is installed on each of the two H-axis sliders, the L-shaped bracket is installed with an X-axis slide, and the X-axis slide assembly includes an X-axis slide, an X-axis slider group and an X-axis Servo motor, X-axis servo motor drives X-axis slider group to move left and right. X-axis slider group is L-shaped. Side sliders are installed on the L-shaped side. Side sliders are used in conjunction with side guide rails. X-axis slide is installed on the L-shaped. X-axis slider group ensures that X-axis can bear increased weight and torque; Y-axis slide is installed on X-axis slider group and moves left and right with X-axis slide; Y-axis slide assembly includes servo motor, reduction gearbox, Y-axis slider and tray removal tray installed on Y-axis slider; Y-axis servo motor drives Y-axis slider to move forward and backward, and Y-axis slider drives tray removal tray to move forward and backward. The three axes can be used together to remove the tray from the tray bin.

[0021] Furthermore, as a preferred embodiment, the jacking device includes a jacking electric cylinder, a jacking servo motor, a reduction gear box, a jacking guide rail, a jacking guide rail sleeve and a pallet seat. The jacking servo motor drives the jacking electric cylinder to move up and down, the pallet seat is installed on the end of the piston rod of the jacking electric cylinder, and the jacking guide rails are installed on both sides of the pallet seat. The jacking guide rails slide in the guide rail sleeve; when the jacking electric cylinder lifts to work, the piston rod rises, the pallet seat rises, the jacking pallet installed on the pallet seat rises, and the jacking guide rail serves to prevent lateral torsion.

[0022] Furthermore, as a preferred embodiment, the frame is provided with a feed port corresponding to the pallet bin, feed tracks are provided on both sides of the feed port, a position sensor is provided at the output end of the feed track, and when the pallet is in place, the position sensor sends a trigger signal to the three-axis gantry module.

[0023] Furthermore, as a preferred embodiment, a pressure sensor is provided on each pallet storage position of the pallet storage, and the placement status of the pallet on each pallet storage position is detected by the pressure sensor.

[0024] Further, as a preferred embodiment, the auxiliary device is arranged on the side of the horizontal belt, and the output end of the horizontal belt is connected to the lifting belt.

[0025] Further, as a preferred embodiment, a crushing assembly is provided in the tray, and a pressing ring assembly is pressed on the tobacco leaf sample to fix the tobacco leaf sample.

[0026] Furthermore, as a preferred embodiment, the pallet is made of aluminum and has a diameter of 45 cm. The crushing assembly includes an inner pressure ring and an outer pressure ring, and the inner pressure ring and the outer pressure ring are coaxially arranged.

[0027] Furthermore, as a preferred embodiment, a rotating shaft is installed on the output shaft of the motor, and a slot hole is provided on the rotating shaft, and a positioning pin is provided in the slot hole, and the positioning pin cooperates with two slots of the rotating table base; when the motor rotates, it drives the rotating shaft to rotate, and the positioning pin on the rotating shaft drives the rotating table base to rotate, the rotating table base and the tray are connected with bolts, and the tray rotates accordingly; the rotating shaft passes through the center hole of the rotating table base, and the rotating shaft has an inclination to facilitate the rotating shaft to pass through the rotating table base; a turntable bracket is installed under the workbench, so that the workbench can be stably placed in the working position; a speed regulator connected to the motor is provided on the workbench, and the motor speed is adjusted by the speed regulator.

[0028] Furthermore, as a preferred embodiment, it also includes a controller, which is respectively connected to and controls the pallet bin lifting mechanism, the three-axis robotic arm, the rotating table mechanism and the infrared spectrum mechanism.

[0029] The present invention adopts the above technical scheme. When the sampling modeling auxiliary device is used, the tobacco leaves are placed flat in the tray, the tobacco leaves are fixed by the inner pressure ring and the large pressure ring, the tray is smoothly fed from the feeding port of the tray warehouse lifting mechanism, and the gantry module puts the tray into different tray positions according to the setting. When collecting the online spectrum, the electric window opener automatically opens the cover plate, and the mechanical arm of the gantry module takes out the tray in the tray warehouse as required and transports it to the tray warehouse lifting mechanism. The tray warehouse lifting mechanism lifts the tray out of the upper end of the frame to the grabbing station of the three-axis mechanical arm; after the three-axis mechanical arm grabs and transfers the tray and places it on the rotating table mechanism, the controller of the rotating table mechanism is turned on, and the motor drives the tray on the rotating table to rotate, and the online near-infrared spectrometer starts to collect the online spectrum of the tobacco leaves. After the tobacco leaf spectrum is collected, the tray on the rotating table is taken out and returned along the original route, and the mechanical arm of the gantry module puts the tray back to the original position of the tray in the tray warehouse. In this way, the online spectrum collection of tobacco leaves in all trays in the entire tray warehouse is completed. The present invention solves the problems of model differences between lines and modeling lag, compresses the modeling process, realizes standardized sampling and modeling operations, and further improves the homogenization processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments;

[0031] Figure 1 It is a schematic diagram of a process of an online near-infrared advance modeling method for leaf threshing and redrying of the present invention;

[0032] Figure 2 It is a schematic diagram of the installation state of an online near-infrared advance modeling device for leaf threshing and redrying of the present invention;

[0033] Figure 3This is one of the structural schematic diagrams of the pallet warehouse lifting mechanism of the present invention;

[0034] Figure 4 This is the second structural schematic diagram of the pallet warehouse lifting mechanism of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the gantry module of the present invention;

[0036] Figure 6 This is one of the structural schematic diagrams of the rotary table mechanism of the present invention;

[0037] Figure 7 This is the second structural schematic diagram of the rotating table mechanism of the present invention.

[0038] The following are marked in the figure: lifting belt 1, pallet 2, infrared spectrometer lens 3, lens bracket 4, rotating table mechanism 5, three-axis robot arm 6, horizontal belt 7, pallet warehouse lifting mechanism 8, infrared spectrometer mechanism 9, H-axis slider 10; cover plate 11, electric window opener 12, three-axis gantry module 14, pallet warehouse 15, feed port 16, frame 17, Foma wheel 18; control panel 21, feed port door panel 22, lifting pallet 23, feed guide rail 25, top Lifting cylinder 26; sampling tray 31, Y-axis servo + reducer 32, Y-axis slide 33, guide rail 34, X-coupling 35, output shaft 36, H-axis servo motor + dual output reducer 37, X-axis slide 38, X-axis servo motor + reducer 39, H-axis slide 10; handle 41, inner pressure ring 42, large pressure ring 43, workbench 44, controller 46; positioning pin 51, rotating shaft 52, center seat 53, turntable bracket 54, motor 55. DETAILED DESCRIPTION

[0039] like Figure 1 As shown, the present invention discloses an online near-infrared advance modeling method for leaf threshing and redrying, comprising the following steps:

[0040] Step 1: Analyze the processing batches of different industrial enterprises over the years, and list the modeling needs to form a sampling table according to the requirements of different industrial enterprises or the needs of the leaf threshing and redrying enterprises themselves;

[0041] Step 2: Take samples in advance in the original tobacco warehouse according to the sampling table, and label each sample individually;

[0042] Step 3: Send the selected samples to the laboratory for sample preparation and store them separately with the labels;

[0043] Step 4: Place the processed tobacco leaf samples in different tray positions according to the sample order;

[0044] Step 5, smoothly transport the sample to the online near-infrared light source, and rotate the sampling tray to collect the online spectrum of the tobacco leaf sample online;

[0045] Step 6, recovering the collected tobacco leaf samples;

[0046] Step 7, preparing the recovered sample into tobacco leaf powder;

[0047] Step 8, sending the sample powder to the laboratory and using laboratory instruments and equipment to detect its chemical composition value;

[0048] Step 9, the online spectrum of the sample is matched one by one with the laboratory chemical composition value detected, and the online near-infrared model is established using the partial least squares method;

[0049] Step 10, finally, the established chemical composition model is transferred to the online near-infrared spectrometer for online application of the model.

[0050] Furthermore, as a preferred implementation, the modeling in step 1 needs to include information on tobacco grade, variety, and origin.

[0051] Furthermore, as a preferred embodiment, each sample is processed by two cuts and three sections during sample preparation in step 3.

[0052] Furthermore, as a preferred embodiment, the sample recovered in step 7 is separated from the stems and leaves, dried, and crushed to prepare 40-mesh tobacco powder.

[0053] like Figures 2 to 7 As shown in one, an online near-infrared advance modeling device for threshing and re-drying leaves comprises a pallet bin lifting mechanism 8, a three-axis robotic arm 6, a rotating table mechanism 5 and an infrared spectrometer mechanism 9. The pallet bin lifting mechanism 8 comprises a frame 17, in which a pallet bin 15, a three-axis gantry module 14 and a lifting device 20 are arranged. The pallet bin 15 and the lifting device 20 are arranged on the same side of the three-axis gantry module 14. The pallet bin 15 has a plurality of different pallet bins separated in a vertical direction. The three-axis gantry module 14 is provided with a plurality of different pallet bins. The module 14 is used to take out pallets from various positions of the pallet warehouse 15 and place them on the pallet seat 23 on the top of the jacking device 20. The jacking device 20 has a jacking electric cylinder 26 and the pallet seat 23 is driven to rise and fall by the jacking electric cylinder 26. The frame 17 is provided with a discharge port at the upper end corresponding to the jacking device 20. The discharge port is provided with a cover plate 11. The cover plate 11 is rotatably connected to one side of the discharge port. The bottom surface of the cover plate 11 is provided with an electric window opener 12, and the electric window opener 12 drives the cover plate 11 to open or close.

[0054] The four corners of the bottom plate of the frame 17 are provided with Forma wheels 18, and the Forma wheels 18 are provided to facilitate the movement of the tray warehouse lifting mechanism 8, so as to facilitate the transfer and transportation of tobacco leaf samples. The three-axis mechanical arm 6 is installed between the tray warehouse lifting mechanism 8 and the rotating platform mechanism 5, and the three-axis mechanical arm 6 grabs the tray extending out of the discharge port and transfers it to the rotating platform mechanism 5, and the rotating platform mechanism 5 includes a workbench 44, and the bottom surface of the workbench 44 is provided with a motor 55, and the output shaft of the motor 55 extends out of the upper surface of the workbench 44, and a rotating platform base 53 is sleeved on the output shaft and rotates with the output shaft 52, and a latch 51 protrudes from the rotating platform base 53 and is fixed with the convenient bayonet at the bottom of the tray 2 through the latch 51, and the infrared spectrometer mechanism 9 includes a lens bracket 4 and an infrared spectrometer lens 3, and the lens bracket 4 is arranged beside the rotating platform mechanism 5, and the infrared spectrometer lens 3 is fixedly installed on the lens bracket 4 and the infrared spectrometer lens 3 is aligned with the tray 2 placed on the rotating platform base 53, and the infrared spectrometer lens 3 collects the online spectrum of the tobacco leaf sample online.

[0055] Further, as a preferred embodiment, the three-axis gantry module 14 includes an H-axis, X-axis, and Y-axis three-axis slide assembly, the H-axis slide assembly is connected by an H-axis servo motor 37 to a dual-output reduction gearbox, connected to an output shaft 52 through a coupling, and then connected to two sets of H-axis sliders 10 through a coupling; the H-axis servo motor 37 drives the H-axis slider 10 to move up and down, and the H-axis servo motor 37 uses a dual-output reduction gearbox to drive the two H-axis sliders 10 to move synchronously; an L-shaped bracket is installed on each of the two H-axis sliders 10, and the L-shaped bracket is installed with an X-axis slide 38, and the X-axis slide 38 assembly includes an X-axis slide 38, an X-axis slider group and an X-axis servo Servo motor 39, X-axis servo motor 39 drives X-axis slider group to move left and right, X-axis slider group is L-shaped, side sliders are installed on the L-shaped side, side sliders are used in conjunction with side guide rails, X-axis slide 38 is installed on the L-shaped, X-axis slider group ensures that X-axis can bear increased weight and torque; Y-axis slide assembly is installed on X-axis slider group and moves left and right with X-axis slide 38; Y-axis slide assembly includes servo motor 32, reduction box, Y-axis slider 33 and tray removal tray 31 installed on Y-axis slider 33; Y-axis servo motor 32 drives Y-axis slider 33 to move forward and backward, and Y-axis slider 33 drives tray removal tray 31 to move forward and backward. The three axes are used in conjunction, and the tray can be taken out from the tray warehouse 15.

[0056] Furthermore, as a preferred embodiment, the jacking device 20 includes a jacking electric cylinder 26, a jacking servo motor (not shown in the figure), a reduction gear box, a jacking guide rail, a jacking guide rail sleeve and a pallet seat 23. The jacking servo motor (not shown in the figure) drives the jacking electric cylinder 26 to move up and down. The pallet seat 23 is installed on the end of the piston rod of the jacking electric cylinder 26. The jacking guide rails are installed on both sides of the pallet seat 23, and the jacking guide rails slide in the guide rail sleeve; when the jacking electric cylinder 26 is lifted to work, the piston rod is lifted, the pallet seat 23 is lifted, and the jacking pallet installed on the pallet seat 23 is lifted, and the jacking guide rail serves to prevent lateral torsion.

[0057] Further, as a preferred embodiment, the frame 17 is provided with a feed port 16 corresponding to the pallet bin 15, and feed rails 25 are provided on both sides of the feed port 16. A position sensor is provided at the output end of the feed rail 25, and when the pallet is in place, the position sensor sends a trigger signal to the three-axis gantry module 14. A feed port door panel 22 is provided at the feed port corresponding to the feed rail 25. A control panel 21 is provided above the frame 17 corresponding to the feed port door panel 22.

[0058] Furthermore, as a preferred embodiment, a pressure sensor is provided on each pallet position of the pallet warehouse 15, and the placement status of the pallet on each pallet position is detected by the pressure sensor.

[0059] Further, as a preferred embodiment, the auxiliary device is arranged on the side of the horizontal belt 7, and the output end of the horizontal belt 7 is connected to the lifting belt 1.

[0060] Further, as a preferred embodiment, a crushing assembly is provided in the tray 2, and a pressing ring assembly is pressed on the tobacco leaf sample to fix the tobacco leaf sample.

[0061] Further, as a preferred embodiment, the tray 2 is made of aluminum and has a diameter of 45 cm. The crushing assembly includes an inner pressure ring 42 and an outer pressure ring 43, and the inner pressure ring 42 and the outer pressure ring 43 are coaxially arranged.

[0062] Furthermore, as a preferred embodiment, a rotating shaft is installed on the output shaft 52 of the motor, and a slot hole is provided on the rotating shaft, and a positioning pin is provided in the slot hole, and the positioning pin cooperates with two slots of the rotating table base 53; when the motor rotates, it drives the rotating shaft to rotate, and the positioning pin on the rotating shaft drives the rotating table base 53 to rotate, and the rotating table base 53 is connected to the tray 2 by bolts, and the tray 2 rotates accordingly; the rotating shaft passes through the center hole of the rotating table base 53, and the rotating shaft has an inclination to facilitate the rotating shaft to pass through the rotating table base 53; a turntable bracket 54 is installed under the workbench 44, so that the workbench 44 can be stably placed in the working position; a speed regulator connected to the motor 55 is provided on the workbench 44, and the speed of the motor 55 is adjusted by the speed regulator.

[0063] Furthermore, as a preferred embodiment, it also includes a controller 46, which is respectively connected to and controls the pallet bin lifting mechanism 8, the three-axis robotic arm 6, the rotating table mechanism 5 and the infrared spectrum mechanism 9.

[0064] The present invention adopts the above technical scheme. When the sampling modeling auxiliary device is used, the tobacco leaves are placed flat in the tray, the inner pressure ring 42 and the large pressure ring are used to fix the tobacco leaves, and the tray is smoothly fed from the feed port 16 of the tray warehouse lifting mechanism 8, and the gantry module puts the tray into different tray positions according to the setting. When collecting the online spectrum, the electric window opener 12 automatically opens the cover plate 11, and the mechanical arm of the gantry module takes out the tray in the tray warehouse 15 as required and transports it to the tray warehouse lifting mechanism 8. The tray warehouse lifting mechanism 8 lifts the tray out of the upper end of the frame 17 to the grabbing station of the three-axis mechanical arm 6; after the three-axis mechanical arm 6 grabs and transfers the tray and places it on the rotating table mechanism 5, the controller of the rotating table mechanism 5 is turned on, and the motor 55 drives the tray on the rotating table to rotate, and the online near-infrared spectrometer starts to collect the online spectrum of the tobacco leaves. After the tobacco leaf spectrum is collected, the tray on the rotating table is taken out and returned along the original route, and the mechanical arm of the gantry module puts the tray back to the original position of the tray in the tray warehouse 15. This cycle completes the online spectrum collection of tobacco leaves in all trays in the entire tray bin 15. The present invention solves the problems of model differences between lines and modeling lag, compresses the modeling process, realizes standardized sampling modeling operations, and further improves the homogenization processing efficiency.

Claims

1. An online near-infrared advance modeling device for leaf threshing and re-drying, characterized by: It includes a pallet warehouse lifting mechanism, a three-axis robotic arm, a rotating table mechanism and an infrared spectrum mechanism. The pallet warehouse lifting mechanism includes a frame, in which a pallet warehouse, a three-axis gantry module and a lifting device are arranged. The pallet warehouse and the lifting device are arranged on the same side of the three-axis gantry module. The pallet warehouse has a plurality of different pallet positions separated in the vertical direction. The three-axis gantry module is used to take out pallets from various positions of the pallet warehouse and place them on the pallet seat on the top of the lifting device. The lifting device has a lifting electric cylinder and the pallet seat is lifted and lowered by the lifting electric cylinder. A discharge port is arranged at the upper end of the frame corresponding to the lifting device. The three-axis robotic arm is installed on the pallet warehouse lifting mechanism and the rotating table mechanism. The three-axis robot grabs the pallet extending out of the discharge port and transfers it to the rotating table mechanism. The rotating table mechanism includes a workbench. A motor is provided on the bottom of the workbench. The output shaft of the motor extends out of the upper surface of the workbench. A rotating table base is sleeved on the output shaft and rotates with the output shaft. A latch protrudes from the rotating table base and is fixed by the latch to the convenient bayonet at the bottom of the pallet. The infrared spectrometer mechanism includes a lens holder and an infrared spectrometer lens. The lens holder is arranged beside the rotating table mechanism. The infrared spectrometer lens is fixedly mounted on the lens holder and the infrared spectrometer lens is aligned with the pallet placed on the rotating table base. The infrared spectrometer lens is The online spectrum of tobacco leaf samples is collected online; the three-axis gantry module includes an H-axis, X-axis, and Y-axis three-axis slide assembly. The H-axis slide assembly is connected to a double-output reduction box by an H-axis servo motor, and the output shaft is connected through a coupling, and then connected to two sets of H-axis sliders through a coupling; the H-axis servo motor drives the H-axis slider to move up and down, and the H-axis servo motor uses a double-output reduction box to drive the two H-axis sliders to move synchronously; an L-shaped bracket is installed on each of the two H-axis sliders, and the L-shaped bracket is installed with an X-axis slide assembly. The X-axis slide assembly includes an X-axis slide, an X-axis slider group and an X-axis servo motor. The X-axis servo motor drives the X-axis slider group to move left and right. The shape of the X-axis slider group is L-shaped, and the side slider is installed on the L-shaped side of the X-axis slider group. The side slider is used in conjunction with the side guide rail, and the X-axis slide is installed on the L-shaped X-axis slider group. The X-axis slider group ensures that the X-axis can bear the increased weight and torque; the Y-axis slide is installed on the X-axis slider group and moves left and right with the X-axis slide; the Y-axis slide assembly includes a servo motor, a reduction gearbox, a Y-axis slider and a tray removal pallet installed on the Y-axis slider; the Y-axis servo motor drives the Y-axis slider to move back and forth, and the Y-axis slider drives the tray removal pallet to move back and forth. The coordinated use of the three axes can remove the pallet from the pallet bin; the frame is provided with a feeding port corresponding to the pallet bin.

2. The on-line near-infrared advance modeling device for leaf threshing and redrying according to claim 1 is characterized by: The jacking device includes a jacking electric cylinder, a jacking servo motor, a reduction gear box, a jacking guide rail, a jacking guide rail sleeve and a pallet seat. The jacking servo motor drives the jacking electric cylinder to move up and down. The pallet seat is installed on the end of the piston rod of the jacking electric cylinder. Lifting guide rails are installed on both sides of the pallet seat. The jacking guide rails slide in the guide rail sleeve. When the jacking electric cylinder lifts to work, the piston rod rises, the pallet seat rises, the jacking pallet installed on the pallet seat rises, and the jacking guide rail prevents lateral torsion.

3. The on-line near-infrared advance modeling device for leaf threshing and redrying according to claim 1 is characterized in that: The tray is made of aluminum with a diameter of 45 cm. A crushing assembly is provided inside the tray. The pressing ring assembly is pressed on the tobacco leaf sample to fix the tobacco leaf sample. The crushing assembly includes an inner pressing ring and an outer pressing ring, and the inner pressing ring and the outer pressing ring are coaxially placed.

4. The on-line near-infrared advance modeling device for leaf threshing and redrying according to claim 1 is characterized in that: A rotating shaft is installed on the output shaft of the motor, and there is a slotted hole on the rotating shaft, and a positioning pin is arranged in the slotted hole, and the positioning pin cooperates with the two slots of the rotating table base; when the motor rotates, it drives the rotating shaft to rotate, and the positioning pin on the rotating shaft drives the rotating table base to rotate, and the rotating table base is connected to the tray by bolts, and the tray rotates accordingly; the rotating shaft passes through the center hole of the rotating table base, and the rotating shaft has an inclination to facilitate the rotating shaft to pass through the rotating table base; a turntable bracket is installed under the workbench, so that the workbench can be stably placed in the working position; a speed regulator connected to the motor is provided on the workbench, and the motor speed is adjusted by the speed regulator.

5. The on-line near-infrared advance modeling device for leaf threshing and redrying according to claim 1 is characterized in that: It also includes a controller, which is respectively connected to and controls the tray warehouse lifting mechanism, the three-axis mechanical arm, the rotating table mechanism and the infrared spectrum mechanism.

6. A near-infrared advance modeling method for threshing and redrying, using the near-infrared advance modeling device for threshing and redrying as claimed in claim 1, characterized in that: The method comprises the following steps: Step 1: Analyze the processing batches of different industrial enterprises over the years, and list the modeling needs to form a sampling table according to the requirements of different industrial enterprises or the needs of the leaf threshing and redrying enterprises themselves; Step 2: Take samples in advance in the original tobacco warehouse according to the sampling table, and label each sample individually; Step 3: Send the selected samples to the laboratory for sample preparation and store them separately with the labels; Step 4: Place the processed tobacco leaf samples in different tray positions according to the sample order; Step 5, smoothly transport the sample to the online near-infrared light source, and rotate the sampling tray to collect the online spectrum of the tobacco leaf sample online; Step 6, recovering the collected tobacco leaf samples; Step 7, preparing the recovered sample into tobacco leaf powder; Step 8, sending the sample powder to the laboratory and using laboratory instruments and equipment to detect its chemical composition value; Step 9, the online spectrum of the sample is matched one by one with the laboratory chemical composition value detected, and the online near-infrared model is established using the partial least squares method; Step 10, finally, the established chemical composition model is transferred to the online near-infrared spectrometer for online application of the model.

7. The method for online near infrared advance modeling of leaf threshing and redrying according to claim 6, characterized in that: When preparing the sample in step 3, each sample is processed with two cuts and three sections.

8. The method for online near infrared advance modeling of leaf threshing and redrying according to claim 6, characterized in that: The sample recovered in step 7 is separated from the stem and leaf, dried, and crushed to prepare a 40-mesh tobacco leaf powder.

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