A tobacco leaf grading flexible bundling mechanism and method

Abstract

The present invention discloses a tobacco grading flexible bundling mechanism and method, which relate to the technical field of tobacco processing. The bundling mechanism includes a base, two binding rings are symmetrically provided on the upper end of the base, and a first sliding base plate and a second sliding base plate are respectively provided at the bottom positions of the two binding rings. The first sliding base plate and the second sliding base plate are slidingly arranged between the first sliding base plate and the second sliding base plate. The thickness of the second sliding base plate and the first sliding base plate does not exceed three millimeters. The second sliding base plate and the second sliding base plate constitute a supporting surface for supporting tobacco leaves. The present application can be graded and adjusted according to the length of the tobacco leaves so as to better bundle the tobacco leaves, and the groove structure of the tobacco leaf supporting surface is eliminated here, which will not cause the problem of the bottom tobacco leaves breaking. The lower pressing surface here is a split design, which will not interfere with the binding structure, and can also tighten the binding strips, thereby improving the binding effect.

Description

Technical Field

[0001] The invention relates to the technical field of flue-cured tobacco leaf processing, in particular to a tobacco leaf grading flexible bundling mechanism and method. Background Art

[0002] Flue-cured tobacco is an annual or limited perennial herbaceous plant of the genus Nicotiana in the Solanaceae family. Harvested tobacco leaves are cleaned, dried, and then graded. During the grading process, leaves of consistent location, color, and length are grouped together. After grading, these leaves are bundled, compressed to create a tighter bundle and reduce the space they occupy. The leaves are then transported and stored together.

[0003] In current production practices, tobacco leaves are manually pre-set on ropes in a hydraulic device, compressed on the ropes, and then bundled manually. However, this is labor-intensive, labor-intensive, and inefficient. With the increasing labor shortage in the tobacco industry, industry insiders are actively developing equipment to automate tobacco bundling. For example, Chinese invention patent application publication number CN114766699A discloses a "tobacco bundling and forming device," which automatically compresses and bundles tobacco leaves.

[0004] However, the main disadvantages of the existing device are that the bundling spacing cannot be adjusted. Regardless of whether the long tobacco leaves or the short tobacco leaves are graded, the bundling spacing is the same, which causes the bundling position of the long tobacco leaves to be too biased towards the middle. The long tobacco leaves lack bundling at both ends, which makes them loose and difficult to stack during transportation; the bundling position of the short tobacco leaves is too biased towards the edge, and the bundling rope may be detached during transportation and lifting, resulting in poor bundling effect. The same device cannot achieve graded bundling according to the grading situation; multiple devices with different bundling spacings must be purchased to meet actual production needs, which increases the cost of fixed asset investment.

[0005] Based on this, a tobacco grading flexible bundling mechanism and method are now provided, which can eliminate the disadvantages of existing devices. Summary of the Invention

[0006] The object of the present invention is to provide a tobacco grading flexible bundling mechanism and method to solve the problems in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A tobacco grading flexible bundling mechanism includes a base, two binding rings are symmetrically provided on the upper end of the base, a first sliding base plate and a second sliding base plate are respectively provided at the bottom of the two binding rings, the first sliding base plate and the second sliding base plate are slidingly arranged between the first sliding base plate, the thickness of the second sliding base plate and the first sliding base plate does not exceed three millimeters, the first sliding base plate and the second sliding base plate constitute a supporting surface for supporting tobacco leaves, a grading adjustment component for adjusting the relative distance between the two binding rings is connected, a binding strip module for bundling tobacco leaves is provided inside each binding ring, and a pressing component for pressing down the tobacco leaves is also provided on the base.

[0009] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0010] In an optional scheme: the downward pressing component includes a mounting bracket connected to the base, the upper end of the mounting bracket is provided with a downward pressing push rod, the output end of the downward pressing push rod is provided with a downward pressing vertical rod, the lower end of the downward pressing vertical rod is provided with a fixed pressure plate, the outer side of the downward pressing vertical rod is symmetrically provided with two transverse telescopic sleeves corresponding to the binding ring, the outer end of the transverse telescopic sleeve is slidably provided with a transverse telescopic rod, the outer end of the transverse telescopic sleeve is rotated with a locking knob, the transverse telescopic rod is locked by the locking knob, so as to adjust the initial length of the transverse telescopic rod, the outer end of the transverse telescopic rod is slid with a connecting vertical rod, the lower end of the connecting vertical rod is provided with a movable pressure plate, the connecting vertical rod is connected to the reset end block at the outer end of the transverse telescopic rod by a reset spring, and the connecting vertical rod is connected to a traction member for driving it to move toward the downward pressing push rod.

[0011] In an optional solution: the traction member includes a fulcrum rod arranged at the upper end of the binding ring, a fixed pulley is rotatably provided at the upper end of the fulcrum rod, the upper end of the connecting vertical rod is connected to the elastic rope, and the other end of the elastic rope is connected to the positioning vertical rod at the upper end of the binding ring.

[0012] In an optional scheme: the binding strip module includes an extension channel arranged inside the binding ring, the extension channel is used to convey the binding strip, the binding strip here is made of flexible plastic material, and its cross-section is rectangular and the width is not less than two centimeters, so that the damage to the tobacco leaves caused by binding can be reduced, and a blocking ring plate is provided inside the binding ring for slidingly blocking the extension channel, and an extension plate is provided at the outer end of the blocking ring plate, and the extension plate and the first sliding bottom plate form a complete support surface, the blocking ring plate is connected to the first telescopic rod for driving it away from the extension channel, the output end of the first telescopic rod is connected to the blocking ring plate by a first telescopic connecting rod, and the blocking ring plate cooperates with the extension channel to form a sealed channel, a notch is provided on one side of the binding ring, and a feeding component is provided at the end of the binding ring where the notch is located, and a cutting component for conveying and cutting the binding strip is provided between the feeding component and the binding ring, and a welding component for welding the ends of the binding strip is provided inside the extension channel, and the ends of the binding strip can be welded by the welding component to complete the binding of the tobacco leaves.

[0013] In an optional solution: the welding assembly includes a hot melt pressure plate inside the binding ring, the hot melt pressure plate is connected to a third telescopic rod for driving it to move upward, a side opening is provided on the side of the binding ring close to the hot melt pressure plate, and a protective partition is provided at the sliding position of the side opening, the protective partition is connected to a second telescopic rod for driving it to be inserted into the binding ring, and the protective partition is driven to be inserted into the binding ring through the second telescopic rod.

[0014] In an optional solution: the feeding component includes a feeding side plate connected to the binding ring, a feeding motor is fixedly provided at the end of the feeding side plate, and a feeding roller for winding the binding strip is provided at the output end of the feeding motor.

[0015] In an optional scheme: the cutting component includes a docking tube connected to the binding ring, a feed channel is provided inside the docking tube, a cutting notch is provided at the upper end of the feed channel, a cutting knife is provided at the cutting notch position, the cutting knife is connected to a cutting push rod for driving it to cut downward, an observation port is provided at the upper end of the docking tube, and the transportation of the binding strip can be clearly observed, which is convenient for later maintenance, a first conveying roller and a second conveying roller are provided for rotation at the outer port position of the docking tube, an elastic layer is provided on the outside of the second conveying roller and the first conveying roller, one end of the first conveying roller is connected to a conveying motor for driving it to rotate, the other ends of the first conveying roller and the second conveying roller are respectively provided with a first gear and a second gear, the second gear and the first gear are meshed with each other, and the side of the binding ring is provided with an end fixing component for positioning the end of the binding strip.

[0016] In an optional solution: the end fixing assembly includes a positioning notch arranged on the side of the binding ring, and the side of the binding ring is provided with a positioning pressure rod for squeezing the end of the binding strip upward, the positioning pressure rod is connected to a positioning push rod for pushing it to move upward, and the positioning push rod is connected to a positioning transverse push rod for driving it to move toward the inside of the binding ring.

[0017] In an optional solution: the graded adjustment component includes a sliding base connected to the binding ring, the upper end of the sliding base is slidably arranged on the base surface, the sliding base is provided with an adjustment screw hole, and an adjustment screw is matched with the adjustment screw hole. One end of the adjustment screw is rotatably connected to the fixed block at the upper end of the base, and the other end of the adjustment screw is connected to an adjustment motor for driving it to rotate, and two threaded areas with opposite thread rotation directions are symmetrically provided on the adjustment screw.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can be graded and adjusted according to the length of tobacco leaves so as to better bind the tobacco leaves; the lower pressure surface is split and will not interfere with the binding structure; the binding strips can also be tightened; the openable sealing channel design on the binding ring is conducive to improving the working reliability of the equipment; therefore, the present invention effectively improves the binding effect;

[0020] The pressing surface in the present invention is designed to be separable and mergeable. After the pressing is completed, the pressing surface is reset and separated, thereby avoiding the problem of interference with the binding and helping to improve the binding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the other side of the present invention.

[0023] Figure 3 It is a schematic diagram of the lower structure of the present invention.

[0024] Figure 4 It is a structural schematic diagram of one side of the binding ring of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the other side of the binding ring of the present invention.

[0026] Figure 6 It is a schematic diagram of the sealing ring plate structure of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the cutting component of the present invention.

[0028] Figure 8It is a schematic diagram of the inner side structure of the binding ring of the present invention.

[0029] Figure 9 It is a schematic structural diagram of the end fixing assembly of the present invention.

[0030] Reference numerals: downward pressing component 100, downward pressing push rod 101, transverse telescopic sleeve 102, elastic rope 103, return spring 104, return end block 105, locking knob 106, connecting vertical rod 107, fulcrum rod 108, movable pressing plate 109, fixed pressing plate 110, mounting bracket 111, transverse telescopic rod 112;

[0031] Binding ring 200, first sliding base plate 201, second sliding base plate 202, extension plate 203, blocking ring plate 204, first telescopic rod 205, first telescopic connecting rod 206, protective baffle 207, second telescopic rod 208, hot melt pressing plate 209, third telescopic rod 210, extension channel 211;

[0032] Base 300;

[0033] Gradual adjustment component 400, sliding base 401, adjustment screw 402;

[0034] Feeding component 500, feeding motor 501, feeding side plate 502, feeding roller 503;

[0035] Cutting component 600, conveying motor 601, docking cylinder 602, first conveying roller 603, second conveying roller 604, first gear 605, feeding channel 606, cutting notch 607, second gear 608, cutting blade 609;

[0036] End fixing assembly 700 , positioning pressure rod 701 , positioning push rod 702 , positioning transverse push rod 703 , and positioning notch 704 . DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0038] In one embodiment, Figures 1-9As shown, a tobacco grading flexible bundling mechanism includes a base 300, two binding rings 200 are symmetrically provided on the upper end of the base 300, and a first sliding bottom plate 201 and a second sliding bottom plate 202 are respectively provided at the bottom of the two binding rings 200, the first sliding bottom plate 201 and the second sliding bottom plate 202 are slidingly arranged between the first sliding bottom plate 201 and the second sliding bottom plate 201, and the thickness of the second sliding bottom plate 202 and the first sliding bottom plate 201 does not exceed three millimeters. The staggered manner of the plates of such thickness causes little damage to the tobacco leaves, the second sliding bottom plate 202 and the second sliding bottom plate 202 constitute a supporting surface for supporting the tobacco leaves, a grading adjustment component 400 for adjusting the relative distance between the two binding rings 200 is connected, and a binding strip module for bundling the tobacco leaves is provided inside each binding ring 200, and a pressing component for pressing down the tobacco leaves is further provided on the base 300, which can cooperate with the supporting surface to complete the squeezing of the tobacco leaves;

[0039] The pressing component 100 includes a mounting frame 111 connected to the base 300, a pressing push rod 101 is provided at the upper end of the mounting frame 111, a pressing vertical rod is provided at the output end of the pressing push rod 101, a fixed pressing plate 110 is provided at the lower end of the pressing vertical rod, two transverse telescopic sleeves 102 corresponding to the binding ring 200 are symmetrically provided on the outer side of the pressing vertical rod, a transverse telescopic rod 112 is provided on the outer end of the transverse telescopic sleeve 102, a locking knob 106 is rotated on the outer side of the transverse telescopic sleeve 102, and the transverse telescopic rod 112 is locked by the locking knob 106, thereby adjusting the transverse The initial length of the telescopic rod 112, the outer end of the transverse telescopic rod 112 is slidably provided with a connecting vertical rod 107, and the lower end of the connecting vertical rod 107 is provided with a movable pressure plate 109, the connecting vertical rod 107 is connected to the reset end block 105 at the outer end of the transverse telescopic rod 112 through a reset spring 104, under the action of the reset end block 105, the connecting vertical rod 107 is connected to the traction member used to drive it to move toward the downward push rod 101, and the movable pressure plate 109 is driven by the traction member to approach the fixed pressure plate 110, so that they can be combined into a downward pressure surface, which can be separated when resetting without affecting the binding;

[0040] The traction member includes a fulcrum rod 108 provided at the upper end of the binding ring 200, and a fixed pulley is rotatably provided at the upper end of the fulcrum rod 108. The upper end of the connecting vertical rod 107 is connected to the elastic rope 103, and the other end of the elastic rope 103 is connected to the positioning vertical rod at the upper end of the binding ring 200. When the connecting vertical rod 107 drives the movable pressure plate 109 to squeeze downward, the elastic rope 103 will pull the movable pressure plate 109 toward the fixed pressure plate 110, thereby completing the merging of the lower pressure surface;

[0041] The binding strip module includes an extension channel 211 arranged inside the binding ring 200, and the extension channel 211 is used to transport the binding strip. The binding strip here is made of flexible plastic material, and its cross-section is rectangular and the width is not less than two centimeters, so that the damage to the tobacco leaves caused by the binding can be reduced. A blocking ring plate 204 is provided inside the binding ring 200 for blocking the extension channel 211. An extension plate 203 is provided at the outer end of the blocking ring plate 204. The extension plate 203 and the first sliding bottom plate 201 and the second sliding bottom plate 202 form a complete supporting surface. The blocking ring plate 204 is connected to the first telescopic rod 205 for driving it away from the extension channel 211. There is a gap between the output end of the first telescopic rod 205 and the blocking ring plate 204. Connected by a first telescopic link 206, the blocking ring plate 204 here cooperates with the extension channel 211 to form a sealed channel that can guide the passage of the binding strip. A notch is provided on one side of the binding ring 200. A feeding component 500 is provided at the end of the binding ring 200 where the notch is located. A cutting component 600 for conveying and cutting the binding strip is provided between the feeding component 500 and the binding ring 200. The cutting component 600 can convey the binding strip provided by the feeding component 500 to the inside of the binding ring 200 and cut the binding strip as needed. A welding component for welding the ends of the binding strip is provided inside the extension channel 211. The ends of the binding strip can be welded by the welding component, thereby completing the binding of tobacco leaves.

[0042] The welding assembly includes a hot melt pressure plate 209 inside the binding ring 200, and the hot melt pressure plate 209 is connected to a third telescopic rod 210 for driving it to move upward. A side opening is provided on the side of the binding ring 200 near the hot melt pressure plate 209, and a protective partition 207 is slidably provided at the side opening. The protective partition 207 is connected to a second telescopic rod 208 for driving it to be inserted into the binding ring 200. The protective partition 207 is driven by the second telescopic rod 208 to be inserted into the binding ring 200, thereby separating the binding strips from the tobacco leaves. Then, the hot melt pressure plate 209 is driven to move upward by the third telescopic rod 210, and then cooperates with the protective partition 207 to complete the welding of the binding strips.

[0043] The feeding component 500 includes a feeding side plate 502 connected to the binding ring 200. A feeding motor 501 is fixedly provided at the end of the feeding side plate 502. A feeding roller 503 for winding the binding strips is provided at the output end of the feeding motor 501. The feeding roller 503 is driven to rotate by the feeding motor 501 to provide sufficient binding strips. The binding strips can also be tightened by reversing the feeding motor 501.

[0044] The cutting component 600 includes a docking tube 602 connected to the binding ring 200, and a feed channel 606 is provided inside the docking tube 602. A cutting notch 607 is provided at the upper end of the feed channel 606, and a cutting knife 609 is provided at the position of the cutting notch 607. The cutting knife 609 is connected to a cutting push rod for driving it to cut downward. An observation port is provided at the upper end of the docking tube 602, and the transportation of the binding strip can be clearly observed, which is convenient for later maintenance. A first conveying roller 603 and a second conveying roller 604 are provided at the outer port position of the docking tube 602. An elastic layer is provided on the outer side of the second conveying roller 604 and the first conveying roller 603, which can maintain tight pressure and friction on the outer side of the binding strip. One end of the first conveying roller 603 is connected to drive The conveying motor 601 rotates, and the other ends of the first conveying roller 603 and the second conveying roller 604 are respectively provided with a first gear 605 and a second gear 608, and the second gear 608 and the first gear 605 are meshed with each other. The side of the binding ring 200 is provided with an end fixing component 700 for positioning the end of the binding strip, so as to facilitate later tightening. The first conveying roller 603 is driven to rotate by the conveying motor 601. Under the transmission of the gears, the first conveying roller 603 and the second conveying roller 604 can smoothly convey the binding strip, and then the end fixing component 700 is used to squeeze the end of the binding strip upward to lock the end of the binding strip, and then the second conveying roller 604 and the first conveying roller 603 are used to reel the binding strip, shortening the length of the binding strip, so that the binding strip can better fit the tobacco leaves.

[0045] The end fixing assembly 700 includes a positioning notch 704 provided on the side of the binding ring 200, and a positioning pressure rod 701 is provided on the side of the binding ring 200 to squeeze the end of the binding strip upward. The positioning pressure rod 701 is connected to the positioning push rod 702 for pushing it upward, and the positioning push rod 702 is connected to the positioning transverse push rod 703 for driving it to move toward the inside of the binding ring 200. The positioning pressure rod 701 is driven by the positioning transverse push rod 703 to extend into the binding ring 200, and then the positioning push rod 702 drives the positioning pressure rod 701 upward to squeeze the end of the binding strip to complete the positioning. The other end of the binding strip is in a free state and can be rolled up. Here, the height of the positioning push rod 702 can be adjusted, and it can pass between the upper and lower binding strips without pressing the lower side binding strip, so that it can be tightened normally;

[0046] The grading adjustment component 400 includes a sliding base 401 connected to the binding ring 200, and the upper end of the sliding base 401 is slidably arranged on the surface of the base 300. The sliding base 401 is provided with an adjusting screw hole, and an adjusting screw 402 is matched with the adjusting screw hole. One end of the adjusting screw 402 is rotatably connected to the fixed block at the upper end of the base 300, and the other end of the adjusting screw 402 is connected to an adjusting motor for driving it to rotate. The adjusting screw 402 is symmetrically provided with two threaded areas with opposite thread rotation directions. The adjusting screw 402 and the sliding base 401 are driven by the adjusting motor to rotate relative to each other. Under the action of the thread, the two sliding bases 401 can approach or move away from the surface of the base 300, thereby meeting the processing of tobacco leaves of different grades. In order to facilitate normal use, the upper end of the base 300 is provided with a scale bar matching the sliding base 401.

[0047] The above embodiment discloses a flexible bundling mechanism for grading tobacco leaves, wherein, in actual use, the tobacco leaves are first placed on the first sliding base plate 201 and the second sliding base plate 202, and the offset degree of the first sliding base plate 201 and the second sliding base plate 202 is adjusted according to the length of the tobacco leaves so as to accommodate tobacco leaves of different grades, and then the push rod 101 is pressed down by the pressing component to squeeze the tobacco leaves. After the squeezing is completed, the squeezing of the tobacco leaves is canceled, and then the feeding component 500 provides the binding strips, and the conveying motor 601 drives the first conveying roller 603 to rotate, and the gear is rotated. Under transmission, the first conveyor roller 603 and the second conveyor roller 604 can convey the binding strip smoothly, and then squeeze the end of the binding strip upward through the end fixing component 700 to lock the end of the binding strip, and then rewind the binding strip through the second conveyor roller 604 and the first conveyor roller 603 to shrink the length of the binding strip, so that the binding strip can better fit the tobacco leaves. After completion, the cutting knife 609 is driven downward by the cutting push rod to complete the cutting of the binding strip, and then the end of the binding strip is welded and fixed by the welding component. The downward pressure here will not interfere with the binding strip.

[0048] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A tobacco leaf grading flexible bundling mechanism, comprising a base (300), wherein the upper end of the base (300) is symmetrically provided with two bundling rings (200); It is characterized by: A first sliding bottom plate (201) and a second sliding bottom plate (202) are respectively provided at the bottom of the two binding rings (200); the first sliding bottom plate (201) and the second sliding bottom plate (202) are arranged to slide with each other; the thickness of the second sliding bottom plate (202) and the first sliding bottom plate (201) does not exceed three millimeters; the first sliding bottom plate (201) and the second sliding bottom plate (202) constitute a support surface for supporting tobacco leaves; A graded adjustment component (400) for adjusting the relative distance between the two binding rings (200) is connected between them. A binding strip module for binding tobacco leaves is provided inside each binding ring (200). A pressing component (100) for pressing down the tobacco leaves is also provided on the base (300). The binding strip module includes an extension channel (211) arranged inside the binding ring (200), the extension channel (211) is used to transport the binding strip, and a blocking ring plate (204) is slidingly provided inside the binding ring (200) for blocking the extension channel (211), and an extension plate (203) is provided at the outer end of the blocking ring plate (204), and the extension plate (203) and the first sliding bottom plate (201) and the second sliding bottom plate (202) form a complete supporting surface, and the blocking ring plate (204) is connected to a first telescopic rod (205) for driving it away from the extension channel (211), and the output end of the first telescopic rod (205) is connected to the blocking ring plate (204) via a first telescopic connecting rod (206), and the blocking ring plate (204) cooperates with the extension channel (211) to form a sealed channel.

2. The tobacco leaf grading flexible bundling mechanism according to claim 1, characterized in that: The pressing component (100) includes a mounting frame (111) connected to the base (300), a pressing push rod (101) is provided at the upper end of the mounting frame (111), a pressing vertical rod is provided at the output end of the pressing push rod (101), a fixed pressing plate (110) is provided at the lower end of the pressing vertical rod, two transverse telescopic sleeves (102) corresponding to the binding ring (200) are symmetrically provided on the outer side of the pressing vertical rod, a transverse telescopic rod (112) is provided on the outer end of the transverse telescopic sleeve (102), and a lock is provided on the outer side of the transverse telescopic sleeve (102). The locking knob (106) is used to lock the transverse telescopic rod (112), thereby adjusting the initial length of the transverse telescopic rod (112). A connecting vertical rod (107) is provided at the outer end of the transverse telescopic rod (112) for sliding. A movable pressing plate (109) is provided at the lower end of the connecting vertical rod (107). The connecting vertical rod (107) is connected to the reset end block (105) at the outer end of the transverse telescopic rod (112) through a reset spring (104). The connecting vertical rod (107) is connected to a traction member for driving it to move toward the downward push rod (101).

3. The tobacco leaf grading flexible bundling mechanism according to claim 2, characterized in that: The traction member comprises a fulcrum rod (108) arranged at the upper end of the binding ring (200), wherein the upper end of the fulcrum rod (108) is rotatably provided with a fixed pulley, the upper end of the connecting vertical rod (107) is connected to the elastic rope (103), and the other end of the elastic rope (103) is connected to the positioning vertical rod at the upper end of the binding ring (200).

4. The tobacco leaf grading flexible bundling mechanism according to claim 1, characterized in that: A notch is provided on one side of the binding ring (200), and a feeding component (500) is provided at the end of the binding ring (200) where the notch is located. A cutting component (600) for conveying and cutting the binding strip is provided between the feeding component (500) and the binding ring (200). A welding component for welding the ends of the binding strip is provided inside the extension channel (211). The ends of the binding strip are welded by the welding component, thereby completing the binding of the tobacco leaves.

5. The tobacco leaf grading flexible bundling mechanism according to claim 4, characterized in that: The welding assembly includes a hot melt pressure plate (209) inside the binding ring (200), the hot melt pressure plate (209) is connected to a third telescopic rod (210) for driving the hot melt pressure plate (209) to move upward, a side opening is provided on the side of the binding ring (200) close to the hot melt pressure plate (209), and a protective partition (207) is provided at the position of the side opening for sliding, the protective partition (207) is connected to a second telescopic rod (208) for driving the hot melt pressure plate (209) to be inserted into the binding ring (200), and the protective partition (207) is driven by the second telescopic rod (208) to be inserted into the binding ring (200).

6. The tobacco leaf grading flexible bundling mechanism according to claim 4, characterized in that: The feeding component (500) comprises a feeding side plate (502) connected to the binding ring (200), a feeding motor (501) is fixedly provided at the end of the feeding side plate (502), and a feeding roller (503) for winding the binding strip is provided at the output end of the feeding motor (501).

7. The tobacco leaf grading flexible bundling mechanism according to claim 5, characterized in that: The cutting component (600) includes a docking tube (602) connected to the binding ring (200), a feeding channel (606) is provided inside the docking tube (602), a cutting notch (607) is provided at the upper end of the feeding channel (606), a cutting knife (609) is provided at the position of the cutting notch (607), and the cutting knife (609) is connected to a cutting push rod for driving it to cut downwards, an observation port is provided at the upper end of the docking tube (602), the transportation of the binding strips is clearly observed, and the later maintenance is convenient, and the outer end position of the docking tube (602) is provided with a rotation port. A first conveying roller (603) and a second conveying roller (604), the second conveying roller (604) and the first conveying roller (603) are provided with an elastic layer on their outer sides, one end of the first conveying roller (603) is connected to a conveying motor (601) for driving the first conveying roller (603) to rotate, the other ends of the first conveying roller (603) and the second conveying roller (604) are respectively provided with a first gear (605) and a second gear (608), the second gear (608) and the first gear (605) are meshed with each other, and the side of the binding ring (200) is provided with an end fixing component (700) for positioning the end of the binding strip.

8. The tobacco leaf grading flexible bundling mechanism according to claim 1, characterized in that: The graded adjustment component (400) includes a sliding base (401) connected to the binding ring (200), the upper end of the sliding base (401) is slidably arranged on the surface of the base (300), the sliding base (401) is provided with an adjustment screw hole, and an adjustment screw (402) is matched in the adjustment screw hole, one end of the adjustment screw (402) is rotatably connected to the fixed block at the upper end of the base (300), and the other end of the adjustment screw (402) is connected to an adjustment motor for driving the adjustment screw (402) to rotate, and two threaded areas with opposite thread rotation directions are symmetrically provided on the adjustment screw (402).

9. A method for using the tobacco grading flexible bundling mechanism according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: adjusting the degree of offset between the first sliding bottom plate (201) and the second sliding bottom plate (202) according to the length of the tobacco leaves so as to accommodate tobacco leaves of different grades, and first placing the tobacco leaves on the first sliding bottom plate (201) and the second sliding bottom plate (202); Step 2: squeezing the tobacco leaves by the pressing component (100), and after the squeezing is completed, canceling the squeezing of the tobacco leaves; Step 3: The binding strip is provided by the feeding component (500), and the first conveying roller (603) is driven to rotate by the conveying motor (601). Under the transmission of the gear, the first conveying roller (603) and the second conveying roller (604) convey the binding strip steadily, and then the end of the binding strip is squeezed upward by the end fixing component (700) to lock the end of the binding strip, and then the binding strip is rolled up by the second conveying roller (604) and the first conveying roller (603), and the length of the binding strip is shortened, so that the binding strip is better fitted with the tobacco leaves. After completion, the cutting knife (609) is driven downward by the cutting push rod to complete the cutting of the binding strip, and then the end of the binding strip is welded and fixed by the welding component; Step 4: Remove the tied tobacco leaves.

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