Machine for picking and baking upper tobacco leaves with stems

Abstract

The utility model discloses an upper portion tobacco leaf picking and baking machine with stems, and relates to the technical field of tobacco leaf harvesting, the upper portion tobacco leaf picking and baking machine with stems comprises a mounting base, a collecting box, a cutting device and a collecting structure, a walking device is arranged at the lower end of the mounting base, the collecting box is arranged at the upper end of the mounting base, and the cutting device is arranged at the lower end of the collecting box. A collecting box is arranged on the mounting base and forms a collecting cavity, an opening is formed in the top of the collecting cavity and used for loading cut tobacco leaves, and the cutting device is located on the rear side of the collecting box and comprises a cutting rotary disc rotationally mounted on the mounting base along the axis extending in the vertical direction and a main stem used for cutting the tobacco leaves. And the collecting structure is arranged on the mounting base and comprises a rotating device and a clamping assembly, the clamping assembly is located on the rear side of the collecting box, and the rotating device is arranged at the top of the cutting device. And the inclined plane on the rear side of the collecting box cooperates with the overturning action, so that the tobacco leaf sliding track is further optimized, and the collecting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tobacco harvesting technology, and in particular to a harvesting and curing machine for tobacco leaves with stems attached. Background Technology

[0002] A tobacco harvester is a tool used in tobacco agriculture. It harvests and transports tobacco leaves under mature or suitable conditions. Tobacco harvesters are divided into fully automatic, semi-automatic, and manual types, and the type of tobacco harvesting method used depends on the scale of tobacco harvesting.

[0003] Most commonly used tobacco harvesters are fully automatic, such as Chinese Patent CN115316121B, which provides a fully automatic tobacco harvesting device, relating to the field of tobacco production technology. The device includes a base, a gathering section, a first transmission section, a second transmission section, and a gathering section. The gathering section includes a gathering wheel with a gathering bend. The first transmission section has a single transmission belt, and the second transmission section has a double transmission belt. An adjustment section is located between the first and second transmission sections, including a first adjustment wheel, a second adjustment wheel, a first drive motor, and a second drive motor. Both the first and second adjustment wheels are frustum-shaped components. A camera is located above the first transmission section, and both the first and second drive motors are electrically connected to the camera. The gathering section includes a gathering wheel and a gathering column. This invention has a simple structure, is easy to use, and can perform fully automatic tobacco harvesting. It harvests the entire tobacco plant and then strings them together, preventing cutting and damage to the leaves during the harvesting process. Furthermore, the whole-plant harvesting process provides excellent transport efficiency for the tobacco leaves, ensuring the quality of tobacco production. The patent also has some problems. For example, while harvesting tobacco leaves with a rotary harvester, it can also collect them. The rotary harvester cuts the tobacco stalks and collects them while rotating, and then transports them to the collection device. However, some longer tobacco stalks may fall outside the equipment due to excessive tilt angle. The tobacco leaves that fall outside the equipment will be crushed and damaged during the equipment's operation, resulting in certain economic losses. Utility Model Content

[0004] The main purpose of this invention is to provide a tobacco leaf harvesting and curing machine with stems attached to the upper part, which aims to prevent partially cut tobacco leaves from falling onto the equipment's travel path and being crushed.

[0005] To achieve the above objectives, this utility model proposes a harvesting and curing machine for upper tobacco leaves with stems, comprising:

[0006] Mounting base, the lower end of which is provided with a walking device;

[0007] A collection box is disposed on the upper end of the mounting base and has a collection cavity. The top of the collection cavity has an opening for loading the cut tobacco leaves.

[0008] A cutting device is located at the rear of the collection box. The cutting device includes a cutting turntable rotatably mounted on the mounting base along an axis extending in the vertical direction, for cutting the main stem of tobacco leaves.

[0009] The collection structure, mounted on a mounting base, includes a rotating device and a clamping assembly. The clamping assembly is located at the rear of the collection box and is used to clamp the main stem of the tobacco leaf. The rotating device is located on top of the cutting device and can drive the clamping assembly to rotate, so that the main stem of the tobacco leaf cut by the cutting device on the clamping assembly can rotate back and forth, so that it can be transferred to the opening above the collection box and fall into the collection cavity when the clamping assembly is released.

[0010] Preferably, the rotating device includes:

[0011] Two fixing seats are installed on the mounting base and located on top of the cutting device;

[0012] The rotating shaft is rotatably mounted between the two fixed seats;

[0013] A first motor is mounted on one of the fixed bases and drives one end of the rotating shaft to rotate the shaft.

[0014] The clamping assembly has a rotating seat and a clamping part disposed on the rotating seat. The rotating seat is fixed to the outside of the rotating shaft so that it can rotate synchronously with the rotating shaft.

[0015] Preferably, the clamping assembly includes:

[0016] A rotating base is installed on the circumference of the rotating shaft;

[0017] The clamping part includes two clamping members, which are movably mounted on the rotating seat and have a travel distance that allows them to move closer to or further away from each other.

[0018] A driving device is installed in the inner cavity of the rotating seat and drives the two clamping members to move.

[0019] Preferably, each of the clamping components has a rubber pad on its outer surface.

[0020] Preferably, the driving device includes;

[0021] A threaded rod, the outer surface of which has two threaded segments spaced apart, the two threaded segments having opposite directions of rotation, the threaded rod being rotatably mounted on the rotating seat;

[0022] Two threaded sleeves are respectively disposed on the two threaded sections and move along the length direction of the threaded rod;

[0023] Two connecting blocks are respectively installed on the outer ends of the two threaded sleeves and for the installation of the two clamping components;

[0024] A second motor drives one end of the threaded rod to rotate the threaded rod.

[0025] Preferably, the rear side of the collection box is inclined downwards.

[0026] Preferably, the upper tobacco leaf harvesting and curing machinery further includes a pusher plate, at least a portion of which extends into the collection chamber and is movable in the front-back direction to push the cut tobacco leaf main stem from the rear to the front.

[0027] Preferably, the pusher includes two sorting sections arranged sequentially in the vertical direction, one of which is located inside the collection cavity and the other is exposed outside the collection cavity.

[0028] Preferably, the two sorting sections are hinged to each other so that the angle of the sorting section located in the collection cavity is adjustable.

[0029] Preferably, the end of the lower sorting section is provided with a plurality of flexible hooks, which are used to hook together the tobacco leaves.

[0030] In the technical solution provided by this utility model, the collection structure is mounted on a mounting base and includes a rotating device and a clamping assembly. The clamping assembly is located on the rear side of the collection box and is used to clamp the main stem of the tobacco leaves. The rotating device is located on top of the cutting device and can drive the clamping assembly to rotate, so that the main stem of the tobacco leaves cut by the cutting device can rotate back and forth on the clamping assembly, so that it can be transferred to the opening of the collection box and fall into the collection cavity when the clamping assembly is released. The stable clamping and directional rotation of the main stem of the tobacco leaves after cutting prevents the tobacco leaves from leaving the collection area due to inertial displacement or gravity. The rotation action of the clamping assembly is precisely matched with the position of the opening of the collection box, ensuring that the tobacco leaves fall accurately into the collection cavity and reducing the loss caused by the falling tobacco leaves. The inclined surface on the rear side of the collection box works in conjunction with the rotation action to further optimize the trajectory of the tobacco leaves and improve the collection efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 A perspective view of an embodiment of a tobacco leaf harvesting and curing machine with stems attached, provided by this utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the data acquisition structure.

[0034] Explanation of icon numbers:

[0035] 1. Cutting device; 2. Mounting base; 3. Walking device; 4. Collection box; 5. Push plate; 6. Collection structure; 601. Rotating device; 6011. First motor; 6012. Rotating shaft; 6013. Fixed base; 602. Clamping assembly; 6021. Second motor; 6022. Connecting block; 6023. Clamping part; 6024. Threaded sleeve; 6025. Threaded rod; 6026. Rotating seat.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] This utility model provides a machine for harvesting and curing tobacco leaves with stems attached. Figures 1 to 2 This invention provides an embodiment of a harvesting and curing machine for tobacco leaves with stems attached.

[0041] Please refer to the following: Figures 1 to 2 The upper tobacco leaf harvesting and curing machinery includes a mounting base 2, a collection box 4, a cutting device 1, and a collection structure 6. The mounting base 2 has a walking device 3 at its lower end. The collection box 4 is located at the upper end of the mounting base 2 and forms a collection cavity. The top of the collection cavity has an opening for loading the cut tobacco leaves. The cutting device 1 is located behind the collection box 4 and includes a cutting turntable rotatably mounted on the mounting base 2 along an axis extending vertically, used to cut the main stem of the tobacco leaves. The collection structure 6 is mounted on the mounting base 2 and includes a rotating device 601 and a clamping assembly 602. The clamping assembly 602 is located on the rear side of the collection box 4 and is used to clamp the main stem of the tobacco leaf. The rotating device 601 is located on the top of the cutting device 1 and can drive the clamping assembly 602 to rotate, so that the main stem of the tobacco leaf cut by the cutting device 1 on the clamping assembly 602 can rotate back and forth, so that it can be transferred to the opening above the collection box 4 and fall into the collection cavity when the clamping assembly 602 is released.

[0042] The walking device 3 refers to the component that supports the movement of the entire machine. It can be a tracked or wheeled structure, such as rubber tires combined with a drive motor, to ensure stable movement of the equipment in the tobacco field. The collection box 4 has an open top design, such as a rectangular opening, to allow the tobacco leaves to fall naturally under gravity. The cutting turntable cuts the tobacco stems through a rotating cutting action. Specifically, it can use a disc blade combined with a drive shaft, with serrated edges on the blade to enhance cutting efficiency. The clamping assembly 602 mechanically clamps and fixes the main stem of the tobacco leaves, for example, by setting adjustable-gap grippers to prevent the tobacco leaves from falling off after cutting. The rotating device 601 drives the clamping assembly 602 to rotate, achieving directional transfer of the tobacco leaves. For example, a servo motor drives the rotating shaft 6012 to rotate, controlling the rotation angle from 90 degrees to 180 degrees.

[0043] Specifically, during operation, the traveling device 3 drives the entire machine along the tobacco ridge, and the cutting turntable rotates to cut the main stem of the tobacco leaf. The clamping assembly 602 clamps the main stem at the moment of cutting, and the rotating device 601 drives the clamping assembly 602 to flip forward, changing the overall position of the tobacco leaf from vertical to horizontal. When the clamping assembly 602 reaches directly above the opening of the collection box 4, the grippers release, and the tobacco leaf falls into the collection chamber due to gravity. The inclined design of the rear side of the collection box 4 assists in the tobacco leaf sliding into the chamber, preventing it from accumulating at the edge of the opening.

[0044] Therefore, in the technical solution provided by this utility model, the collection structure 6 is mounted on the mounting base 2, including a rotating device 601 and a clamping assembly 602. The clamping assembly 602 is located on the rear side of the collection box 4 and is used to clamp the main stem of the tobacco leaf. The rotating device 601 is located on the top of the cutting device 1 and can drive the clamping assembly 602 to rotate, so that the main stem of the tobacco leaf cut by the cutting device 1 on the clamping assembly 602 can rotate back and forth, so that it can be transferred to the opening of the collection box 4 and fall into the collection cavity when the clamping assembly 602 is released. The stable clamping and directional rotation of the main stem of the tobacco leaf after cutting prevents the tobacco leaf from leaving the collection area due to inertial displacement or gravity. The rotation action of the clamping assembly 602 is precisely matched with the opening position of the collection box 4 to ensure that the tobacco leaf falls accurately into the collection cavity and reduce the loss caused by the falling tobacco leaf. The inclined surface on the rear side of the collection box 4 works in conjunction with the rotation action to further optimize the trajectory of the tobacco leaf and improve the collection efficiency.

[0045] Traditional tobacco harvesting devices with a single swing arm structure are prone to swaying, causing tobacco leaves to fall. This solution, however, uses double fixed seats 6013 to support the rotating shaft 6012 to form a stable rotating shaft 6012 line. Combined with motor drive, it achieves precise angle control and eliminates the shaking phenomenon during the turning process. Specifically, in an embodiment of this utility model, the rotating device 601 includes two fixed seats 6013, a rotating shaft 6012, and a first motor 6011. The two fixed seats 6013 are mounted on the mounting base 2 and located on top of the cutting device 1. The rotating shaft 6012 is rotatably mounted between the two fixed seats 6013. The first motor 6011 is mounted on one of the fixed seats 6013 and drives one end of the rotating shaft 6012 to rotate the rotating shaft 6012. The clamping assembly 602 has a rotating seat 6026 and a clamping part 6023 provided on the rotating seat 6026. The rotating seat 6026 is fixed to the outside of the rotating shaft 6012 so that it can rotate synchronously with the rotating shaft 6012.

[0046] The fixed base 6013 is a support structure that supports the rotation of the rotating shaft 6012. It can be installed on the mounting base 2 by welding or bolting, stabilizing the operation of the rotating shaft 6012. The rotating shaft 6012 is a rigid rod that transmits rotational motion. It can be a hollow steel tube with rolling bearings for rotatable installation, connecting the drive device and the clamping assembly 602. The first motor 6011 is the power source that drives the rotating shaft 6012. It can be a servo motor with a reducer, coaxially connected to the rotating shaft 6012 via a coupling to form a drive relationship. The rotating base 6026 is a connecting component that supports the clamping part 6023. It can be manufactured into a U-shaped bracket structure using casting technology and fixedly connected to the rotating shaft 6012 via a keyway, synchronously transmitting rotational torque.

[0047] Specifically, two fixed seats 6013 are vertically fixed to the surface of the mounting base 2 by welding, and their spacing can be adjusted according to the length of the rotating shaft 6012. The two ends of the rotating shaft 6012 are respectively mounted on the fixed seats 6013 via deep groove ball bearings, and the bearing seats are fixed with flanges. The first motor 6011 is fixed to the outside of the right fixed seat 6013 by bolts, and its output shaft is connected to the right end of the rotating shaft 6012 via a flexible coupling. The rotating seat 6026 is made of bent steel plate, sleeved in the middle of the rotating shaft 6012 and fixed with a flat key, and the clamping part 6023 is bolted to the top of the rotating seat 6026. When the first motor 6011 starts, the rotating shaft 6012 drives the rotating seat 6026 and the clamping part 6023 to rotate 180 degrees reciprocally, causing the clamped tobacco stem to flip from the vertical cutting position to the horizontal placement position. This system effectively solves the problem of tobacco leaves slipping due to mechanical vibration during transport. The rigid rotating shaft 6012 and synchronous flipping structure ensure smooth transfer of the main stem of the tobacco leaves, preventing damage from crushing during equipment operation and improving the integrity of the collected leaves. Simultaneously, the double fixed base 6013 support structure enhances the stability of the equipment, allowing for precise coordination between the flipping action and the cutting process, ensuring reliable continuous operation.

[0048] By combining the bidirectional adjustable clamping components with the built-in drive device, a symmetrical clamping force field is formed during the clamping stage, clamping stability is maintained during the transfer stage, and precise feeding control is achieved during the release stage, effectively preventing the accidental detachment of the tobacco main stem during the transfer process. Specifically, in the embodiment of this utility model, the clamping assembly 602 includes a rotating seat 6026, a clamping part 6023, and a drive device. The rotating seat 6026 is installed on the periphery of the rotating shaft 6012. The clamping part 6023 includes two clamping components, which are movably installed on the rotating seat 6026 and have a movement stroke that moves closer to or further away from each other. The drive device is installed in the inner cavity of the rotating seat 6026 and drives the two clamping components to move.

[0049] The rotating base 6026 refers to the rotating base that supports the clamping part 6023. It can be made of cast metal and is connected to the rotating arm via a shaft 6012. This structure allows the clamping part 6023 to rotate as a whole under the drive of the rotating device 601, achieving spatial transfer of the main stem of the tobacco leaf. The clamping element refers to the end effector that performs the clamping action. It can be implemented using L-shaped metal grippers, and the relative travel of the two clamping elements can be limited by a guide rail mechanism. The driving device refers to the power unit that controls the opening and closing of the clamping elements. It can be implemented using a linear motor or cylinder, and transmits power to the clamping elements through a built-in transmission mechanism.

[0050] Specifically, when the main stem of the tobacco leaf is guided to the clamping area, the drive device drives the two clamping members to move towards each other along the guide rail, completing the clamping and fixing of the main stem of the tobacco leaf. After the cutting device 1 completes the stem cutting, the rotating device 601 drives the rotating seat 6026 to rotate as a whole, so that the clamping part 6023 carries the main stem of the tobacco leaf to the opening above the collection box 4. At this time, the drive device reverses its action to separate the clamping members, and the cut main stem of the tobacco leaf can fall accurately into the collection chamber. The symmetrical arrangement of the clamping members can form a uniform clamping force, preventing the tobacco stem from slipping off due to unilateral force during the rotation process.

[0051] Furthermore, each of the clamping components has a rubber pad on its outer surface.

[0052] The rubber pad refers to the elastic material layer covering the surface of the clamping component that contacts the main stem of the tobacco leaf. Specifically, it can be made of vulcanized rubber material and fixed to the surface of the clamping component through bonding or in-mold molding. This increases the friction between the clamping component and the main stem of the tobacco leaf, while preventing damage to the stem surface caused by rigid clamping. Specifically, when the clamping assembly 602 performs the clamping action, the two clamping components contact the main stem of the tobacco leaf through their approaching stroke. At this time, the rubber pad on the outer surface increases the contact area and buffers the clamping pressure through elastic deformation. During clamping, the coefficient of friction of the rubber pad can inhibit the sliding of the main stem of the tobacco leaf under clamping conditions, while the elasticity of the material can prevent rigid clamping from causing indentations or tears to the stem surface. When the rotating device 601 drives the clamping assembly 602 to rotate above the opening of the collection box 4, the elastic recovery characteristics of the rubber pad after the clamping component is released can reduce the adhesion between the main stem of the tobacco leaf and the clamping component, ensuring that the tobacco leaves fall smoothly into the collection chamber. It effectively improves the gripping reliability of the clamping component 602 on the main stem of tobacco leaves, prevents the tobacco leaves from falling off due to insufficient gripping force during the turning and transfer process, and reduces mechanical damage to the stem epidermis through the buffering effect, thereby ensuring the integrity of the tobacco leaves and improving the collection efficiency.

[0053] Furthermore, the driving device includes a threaded rod 6025, two threaded sleeves 6024, two connecting blocks 6022, and a second motor 6021. The outer surface of the threaded rod 6025 has two threaded segments spaced apart, with the two threaded segments rotating in opposite directions. The threaded rod 6025 is rotatably mounted on the rotating seat 6026. The two threaded sleeves 6024 are respectively disposed on the two threaded segments and move along the length direction of the threaded rod 6025. The two connecting blocks 6022 are respectively installed on the outer ends of the two threaded sleeves 6024 and are used for the installation of the two clamping components. The second motor 6021 is driven and connected to one end of the threaded rod 6025 to drive the threaded rod 6025 to rotate.

[0054] The threaded rod 6025 refers to a transmission component with oppositely helical threaded sections, specifically a bidirectional lead screw, which drives two threaded sleeves 6024 to move towards or away from each other through forward and reverse rotation. The threaded sleeve 6024 refers to a sleeve component with an internal threaded hole that mates with the threaded section, specifically made of copper or steel, used to convert the rotational motion of the threaded rod 6025 into linear motion. The connecting block 6022 is a transition component connecting the threaded sleeve 6024 and the clamping member, specifically implemented by welding or bolting, used to transmit motion and maintain the synchronization of the clamping member. The second motor 6021 is a drive element that provides rotational power, specifically a stepper motor or servo motor, used to precisely control the rotation angle of the threaded rod 6025. When the second motor 6021 starts, the threaded rod 6025 begins to rotate, and the two threaded sleeves 6024 move synchronously in opposite directions along the length of the threaded rod 6025 under the action of the oppositely helical threaded sections. The connecting block 6022 transmits the linear motion of the threaded sleeve 6024 to the clamping members, causing the two clamping members to move closer or further apart, thereby clamping or releasing the main stem of the tobacco leaf. Through the self-locking characteristic of the threaded drive, the clamping members can maintain a stable state after clamping, avoiding loosening due to vibration or external force.

[0055] In order to facilitate the collection of cut tobacco stems, the shape of the collection box 4 needs to be changed to facilitate the stacking of cut tobacco stems. Specifically, in the embodiment of this utility model, the rear side of the collection box 4 is inclined downward.

[0056] The downward-sloping rear side of the collection box 4 means that the rear wall of the collection box 4 is inclined downward at a certain angle relative to the horizontal plane. Specifically, this can be achieved by designing the rear wall of the collection box 4 as an inclined plate forming an acute angle with the horizontal plane, which is connected to the bottom of the collection box 4. By setting the rear side downward, the cut tobacco stems can be guided to slide naturally into the collection chamber under the action of gravity, avoiding the tobacco stems from rebounding or getting stuck at the opening edge due to contact with the vertical wall of the rear side of the collection box 4. When the clamping assembly 602 transfers the cut tobacco stems to above the opening of the collection box 4 and releases them, the tobacco stems fall under the action of gravity. Because the rear side of the collection box 4 is inclined downward, the tobacco stems slide down the inclined surface after contacting the rear side and directly enter the collection chamber, instead of accumulating near the opening or sliding to the outside of the collection box 4 due to the vertical rear side. For example, the tilt angle of the rear side can be adjusted according to the length and weight of the tobacco main stem, so that it can provide sufficient guidance and adapt to tobacco main stems of different sizes.

[0057] Furthermore, the upper tobacco leaf harvesting and curing machinery also includes a pusher plate 5, at least a portion of which extends into the collection chamber and is movable in the front-back direction to push the cut tobacco leaf main stem from the rear to the front.

[0058] The pusher plate 5 is a plate-like structure that can move longitudinally along the collecting chamber. It can be made of metal or high-strength plastic. Through reciprocating motion in the front-back direction, it pushes the main stem of the tobacco leaves from the rear to the front of the collecting chamber, preventing the leaves from accumulating near the opening and slipping. The collecting chamber is a box-like space used to hold the tobacco leaves. Its top opening is used to receive the turned tobacco leaves. It can be designed as a cuboid or trapezoidal cavity. The part of the pusher plate 5 extending into the cavity maintains a gap with the bottom surface of the cavity to prevent jamming. The front-back movement refers to the horizontal movement of the pusher plate 5 along the mechanical direction under the control of the drive device. This can be achieved using a hydraulic cylinder, electric push rod, or lead screw mechanism. A linear motion trajectory ensures the main stem of the tobacco leaves is stably pushed. Initially, the pusher plate 5 is located at the rear of the collecting chamber. When the clamping assembly 602 flips and throws the cut main stem of the tobacco leaves above the opening, the tobacco leaves may accumulate in the rear area of ​​the collecting chamber due to inertia. At this time, the pusher plate 5 is driven to move backward to the position where the tobacco leaves accumulate, and then forward, forcing the main stem of the tobacco leaves to move forward as a whole, moving it away from the edge of the collecting chamber opening. The pusher plate 5 can cover more than half of the length of the collection chamber, such as the rear 1 / 3 to the front 2 / 3 of the chamber, ensuring that the tobacco leaves are always in the center of the chamber during the transfer process.

[0059] Furthermore, the push plate 5 includes two sorting sections arranged sequentially in the vertical direction, one of which is located inside the collection cavity and the other of which is exposed outside the collection cavity.

[0060] The two sorting sections arranged sequentially in the vertical direction refer to the pusher plate 5 being divided into upper and lower functional areas, which can be connected by welding or integral molding to form a segmented structure with upper and lower sections. Specifically, it can be made of metal plates or engineering plastics. The sorting section located inside the collection chamber directly contacts and pushes the main stem of the tobacco leaf, while the sorting section exposed outside the collection chamber serves as an external support and adjustment component. For example, it is connected to the drive mechanism through its exposed portion to achieve overall motion control of the pusher plate 5. When the pusher plate 5 moves in the back-and-forth direction, the sorting section inside the collection chamber extends into the tobacco leaf accumulation area and pushes the cut main stem of the tobacco leaf forward through reciprocating motion. The sorting section exposed outside the collection chamber is fixed to the external drive mechanism, for example, connected to the hydraulic cylinder through a connecting rod or slide rail, thereby transmitting power and maintaining the stability of the pusher plate 5's movement. During the pushing process, the two sorting sections form a continuous force application surface, preventing the tobacco leaves from getting stuck or scattering due to uneven force.

[0061] The two sorting sections are hinged together, allowing the angle of the sorting section located within the collection chamber to be adjustable. The hinge means that the two structures are connected by a hinge or pivot 6012, allowing one structure to rotate around the connection point. Specifically, a hinge connection with a pin can be used, limiting the hinge's rotation range to a specific angle, thereby adjusting the angle of the sorting section within the collection chamber. Angle adjustment means that by changing the rotation angle of the hinge structure, the sorting section can present different tilt states relative to the push plate 5 body. This can be achieved using a manual adjustment knob or an electric drive device. For example, an adjustment mechanism with a locking function can be installed at the hinge, allowing the operator to manually adjust and fix the angle. The flexible hook refers to a hook-shaped component made of elastic material. Specifically, it can be molded from rubber or silicone material, with the hook end designed in an arc or wave shape to increase the contact area with the tobacco leaves and avoid damage to the leaves. This effectively solves the problem of reduced conveying efficiency caused by uneven accumulation of tobacco leaves during collection, while also preventing loose leaves from being scratched by equipment components during pushing. The adjustable sorting section can adapt to the needs of different operating scenarios. The flexible hook can maintain the integrity of the tobacco leaves while improving the space utilization of the collection box 4 when collecting the leaves.

[0062] The lower end of the sorting section is equipped with multiple flexible hooks for collectively gathering tobacco leaves. These flexible hooks are hook-shaped structures made of elastic and flexible materials, such as silicone or rubber, that do not damage the leaf surface upon contact and can accommodate tobacco leaves of different sizes and shapes. At least three flexible hooks are arranged at intervals at the end of the sorting section, using a linear array or staggered layout. Increasing the number of contact points improves the gripping coverage of the tobacco leaves. This effectively solves the problem of loosely distributed tobacco leaves falling during collection, reduces the risk of leaves being crushed and damaged outside the equipment, and protects the integrity of the leaves through the flexible material, preventing mechanical damage from affecting the quality of the tobacco.

[0063] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A machine for harvesting and curing tobacco leaves with stems attached, characterized in that, include: Mounting base, the lower end of which is provided with a walking device; A collection box is disposed on the upper end of the mounting base and has a collection cavity. The top of the collection cavity has an opening for loading the cut tobacco leaves. A cutting device is located at the rear of the collection box. The cutting device includes a cutting turntable rotatably mounted on the mounting base along an axis extending in the vertical direction, for cutting the main stem of tobacco leaves. The collection structure, mounted on a mounting base, includes a rotating device and a clamping assembly. The clamping assembly is located at the rear of the collection box and is used to clamp the main stem of the tobacco leaf. The rotating device is located on top of the cutting device and can drive the clamping assembly to rotate, so that the main stem of the tobacco leaf cut by the cutting device on the clamping assembly can rotate back and forth, so that it can be transferred to the opening above the collection box and fall into the collection cavity when the clamping assembly is released.

2. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 1, characterized in that, The rotating device includes: Two fixing seats are installed on the mounting base and located on top of the cutting device; The rotating shaft is rotatably mounted between the two fixed seats; A first motor is mounted on one of the fixed bases and drives one end of the rotating shaft to rotate the shaft. The clamping assembly has a rotating seat and a clamping part disposed on the rotating seat. The rotating seat is fixed to the outside of the rotating shaft so that it can rotate synchronously with the rotating shaft.

3. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 1, characterized in that, The clamping assembly includes: A rotating seat is mounted on the circumference of the rotating shaft; The clamping part includes two clamping members, which are movably mounted on the rotating seat and have a travel distance that allows them to move closer to or further away from each other. A driving device is installed in the inner cavity of the rotating seat and drives the two clamping members to move.

4. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 3, characterized in that, Each of the clamping components has a rubber pad on its outer surface.

5. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 4, characterized in that, The driving device includes; A threaded rod, the outer surface of which has two threaded segments spaced apart, the two threaded segments having opposite directions of rotation, the threaded rod being rotatably mounted on the rotating seat; Two threaded sleeves are respectively disposed on the two threaded sections and move along the length direction of the threaded rod; Two connecting blocks are respectively installed on the outer ends of the two threaded sleeves and for the installation of the two clamping components; A second motor drives one end of the threaded rod to rotate the threaded rod.

6. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 1, characterized in that, The rear side of the collection box is inclined downwards.

7. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 1, characterized in that, The upper tobacco leaf harvesting and curing machinery also includes a pusher plate, at least a portion of which extends into the collection chamber and is movable in the front-back direction to push the cut tobacco leaf main stem from the rear to the front.

8. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 7, characterized in that, The pusher plate includes two sorting sections arranged sequentially in the vertical direction, one of which is located inside the collection cavity and the other is exposed outside the collection cavity.

9. The tobacco leaf harvesting and curing machinery as described in claim 8, characterized in that, The two sorting sections are hinged to each other so that the angle of the sorting section located in the collection cavity is adjustable.

10. The harvesting and curing machinery for upper tobacco leaves with stems as described in claim 8, characterized in that, The lower end of the sorting section is provided with multiple flexible hooks, which are used to hook together the tobacco leaves.

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