Rapid stem and leaf separation device for tobacco leaves with stems

Abstract

The utility model belongs to the technical field of tobacco leaf processing, and particularly discloses a stem-leaf rapid separating device for tobacco leaves with stems, which comprises a supporting platform, the center of the supporting platform is connected with a separating cylinder provided with a stem-leaf separating component through a conical cylinder, and the stem-leaf separating component comprises a self-adaptive cutter structure driven by a tension spring; a clamping mechanism driven by double servo motors is arranged on the platform, a first lead screw is in linkage with symmetrical clamping blocks to achieve stem clamping, and a second lead screw drives a clamping frame to ascend and descend along an optical axis. Through cooperative control of the double servo motors, in the stem clamping and lifting process, multiple sets of cutters in a circumferential array cut into the surfaces of stems in a self-adaptive mode under the action of tension springs, and efficient stripping of stems and leaves is achieved. The problem that traditional manual separation is low in efficiency is effectively solved, the device has the advantages of being convenient to operate, thorough in separation and high in automation degree, production efficiency is remarkably improved, labor cost is reduced, and the device is suitable for large-scale tobacco leaf processing and production.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco processing technology, specifically relating to a device for rapid separation of stems and leaves in tobacco leaves with stems. Background Technology

[0002] In tobacco harvesting, the top 4-6 fully mature leaves of the tobacco plant are usually harvested with the stem intact, meaning the connection between the stem and the leaf is retained during harvesting. Compared to the traditional single-leaf harvesting method, harvesting with the stem intact effectively reduces mechanical damage to the leaves and improves the curing quality of the tobacco leaves through the nutrient return mechanism of the stem.

[0003] After curing, tobacco leaves with stems need to be separated from the stems for further grading. Currently, stem and leaf separation mainly relies on manual picking, which consumes a lot of manpower, is inefficient, and cannot meet the needs of large-scale production. Moreover, during frequent operations, the burrs and sharp parts of the stems can easily scratch the hands and faces of operators, posing a significant safety hazard. Utility Model Content

[0004] To address the aforementioned technical problems, this invention designs a rapid stem-leaf separation device for tobacco leaves with stems, enabling rapid separation of stems and leaves from roasted tobacco leaves with stems, thereby improving separation efficiency and reducing labor costs.

[0005] This utility model discloses a rapid stem-leaf separation device for tobacco leaves, comprising a support platform. A conical cylinder is laterally connected to the center of the support platform to the left. A separation cylinder is fixedly connected to the left end of the conical cylinder. Multiple sets of circumferentially arrayed stem-leaf separation components are provided on the inner side of the separation cylinder. Each stem-leaf separation component includes a fixed block fixedly connected to the outside of the separation cylinder. A movable rod is inserted into the fixed block, and a cutter is fixedly connected to one end of the movable rod inserted into the separation cylinder. A clamping frame is provided on the right side of the support platform. A first lead screw is provided on one side of the clamping frame. Two threads with opposite directions are symmetrically arranged on the first lead screw. One end of the first lead screw passes through the clamping frame and is connected to a first servo motor. Two symmetrical clamping blocks are threadedly connected to the first lead screw. A first optical axis is fixedly connected to the other side of the clamping frame. One side of the two clamping blocks is slidably connected to the first optical axis. A second lead screw is threadedly connected to one side of the clamping frame, and the other side is slidably sleeved on the second optical axis. The second lead screw and the second optical axis are mounted on the right side of the support platform through a bracket. The top of the second lead screw passes through the bracket and is connected to the second servo motor.

[0006] The movable rod is fixedly connected to a fixing plate at one end outside the separation cylinder, and a tension spring is provided between the fixing plate and the fixing block.

[0007] The bottom of the support platform is connected to a base plate, and a collection frame is installed on the base plate. The collection frame is located below the separation cylinder.

[0008] Each clamping block has a rubber protective pad on its inner side.

[0009] The beneficial effects of this utility model are:

[0010] Compared with existing technologies, the present invention provides a rapid stem-leaf separation device for tobacco leaves with stems. The device inserts the roasted tobacco stem into the separation cylinder until one end of the stem body is positioned between two clamping blocks. A first servo motor drives a first lead screw to rotate, causing the clamping blocks on both sides to slide along a first optical axis to clamp the stem body. Subsequently, a second servo motor starts, driving a second lead screw to rotate, causing the clamping frame to move smoothly upwards along a second optical axis, pulling the stem out of the separation cylinder. During this process, the stem and leaves are pulled into the working area of ​​multiple stem-leaf separation components. A tension spring drives a moving rod to push the cutter to adaptively adjust the cutting depth, achieving efficient stem-leaf separation. The separated leaves fall to the bottom of the separation cylinder. This device achieves rapid stem-leaf separation of roasted tobacco leaves with stems, improving separation efficiency, meeting the needs of large-scale production, and reducing labor costs. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the overall structure of the separation device in the embodiment. Figure 1 .

[0013] Figure 2 This is a cross-sectional view of the separation device in the embodiment.

[0014] Figure 3 This is a schematic diagram of the stem and leaf separation component of the separation device in the embodiment.

[0015] Figure 4 This is a schematic diagram of the clamping frame structure of the separation device in the embodiment.

[0016] In the attached diagram, the structural names represented by each number are as follows:

[0017] 1-Support platform, 101-Base plate, 2-Conical cylinder, 3-Separation cylinder, 4-Smoking rod, 5-Stem and leaf separation assembly, 501-Fixing block, 502-Moving rod, 503-Cutter, 504-Fixing plate, 505-Tension spring, 6-Clamping frame, 601-First lead screw, 602-Clamping block, 603-Rubber protective pad, 604-First optical axis, 605-First servo motor, 7-Bracket, 8-Second lead screw, 9-Second servo motor, 10-Second optical axis, 11-Collection frame. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1

[0020] To achieve rapid stem-leaf separation of cured tobacco leaves, improve separation efficiency, and reduce labor costs, please refer to... Figures 1 to 4 As shown, the rapid stem-leaf separation device for tobacco leaves in this embodiment includes a rectangular support platform 1. A conical cylinder 2 is horizontally connected to the center of the support platform 1 to the left. A separation cylinder 3 is fixedly connected to the left end of the conical cylinder 2. Multiple sets of circumferentially arrayed stem-leaf separation components 5 are provided on the inner side of the separation cylinder 3. Each set of stem-leaf separation components 5 includes a fixing block 501 fixedly connected to the outside of the separation cylinder 3. A moving rod 502 is inserted into the fixing block 501. A cutter 503 is fixedly connected to one end of the moving rod 502 inserted into the separation cylinder 3. A fixing plate 504 is fixedly connected to the other end of the moving rod 502 located outside the separation cylinder 3. A tension spring 505 is provided between the fixing plate 504 and the fixing block 501. The elastic connection between the fixing plate 504 and the fixing block 501 through the tension spring 505 realizes the adaptive pressing of the cutter 503. Furthermore, to facilitate the insertion of the tobacco rod into the separator 3, the left side of the cutter 503 is designed as an inclined surface, and the tension spring 505 has a high-strength elastic force. At this time, the end of the rod is allowed to pass under the inclined surface of the cutter 503. After the end of the rod passes, the high-strength elastic force of the tension spring 505 pushes the cutter 503 to always fit tightly against the rod and scrape the tobacco leaves off, ensuring that the tobacco leaves cannot continue to pass through with the help of the inclined surface structure, thus achieving efficient separation.

[0021] A rectangular clamping frame 6 is provided on the right side of the support platform 1. A first lead screw 601 is provided on one side of the clamping frame 6. Two threads with opposite directions are symmetrically arranged on the first lead screw 601. One end of the first lead screw 601 passes through the clamping frame 6 and is connected to the first servo motor 605. The other end of the first lead screw 601 is connected to the clamping frame 6 through a bearing. Two symmetrical clamping blocks 602 are threadedly connected to the first lead screw 601. A first optical axis 604 is also fixedly connected to the other side of the clamping frame 6. One side of the two clamping blocks 602 is slidably connected to the first optical axis 604. A second lead screw 8 is threadedly connected to one side of the clamping frame 6, and the other side is slidably sleeved on the second optical axis 10. The second lead screw 8 and the second optical axis 10 are mounted on the support platform 1 through a bracket 7. The top of the second lead screw 8 passes through the bracket 7 and is connected to the second servo motor 9. The bottom of the second lead screw 8 is connected to the support platform 1 through a bearing.

[0022] During the separation of stems and leaves from roasted tobacco leaves, the operator inserts the roasted tobacco stem 4 from the left end of the separation cylinder 3, so that the top of the tobacco stem 4 extends between the two clamping blocks 602. The first servo motor 605 drives the first lead screw 601 to rotate forward, causing the clamping blocks 602 on both sides to move towards each other along the first optical axis 604 to clamp the tobacco stem 4. Subsequently, the second servo motor 9 drives the second lead screw 8 to rotate, causing the clamping frame 6 to rise at a constant speed along the second optical axis 10. During the vertical traction of the tobacco stem 4, the tobacco leaves are pulled into the working area of ​​the cutter 503. The elastically pressed cutter 503 automatically adjusts the cutting depth according to the change in the diameter of the tobacco stem, achieving efficient stem and leaf separation. This enables rapid stem and leaf separation of roasted tobacco leaves, improves separation efficiency, meets the needs of large-scale production, and reduces labor costs.

[0023] The bottom of the support platform 1 is connected to the base plate 101, and a collection frame 11 is set on the base plate 101. The collection frame 11 is located at the bottom of the separation cylinder 3 and collects the separated tobacco leaves.

[0024] To improve the clamping stability of the clamping block 602 on the cigarette rod 4, a wavy rubber protective pad 603 is also provided on the inner side of the clamping block 602.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. A device for rapid separation of stems and leaves from tobacco leaves with stems, characterized in that, The system includes a support platform (1), a conical cylinder (2) connected laterally to the left of the center of the support platform (1), a separation cylinder (3) fixedly connected to the left end of the conical cylinder (2), and multiple sets of circumferentially arrayed stem and leaf separation components (5) provided on the inner side of the separation cylinder (3). The stem and leaf separation components (5) include a fixing block (501) fixedly connected to the outside of the separation cylinder (3), a moving rod (502) inserted into the fixing block (501), and a cutter (503) fixedly connected to one end of the moving rod (502) inserted into the separation cylinder (3). A clamping frame (6) is provided on the right side of the support platform (1), and a first lead screw (601) is provided on one side of the clamping frame (6). The first lead screw (601) is symmetrically arranged with different rotation directions. The two opposite threads are connected as follows: one end of the first lead screw (601) passes through the clamping frame (6) and is connected to the first servo motor (605), and two symmetrical clamping blocks (602) are threaded on the first lead screw (601). The other side of the clamping frame (6) is also fixedly connected to the first optical axis (604). One side of the two clamping blocks (602) is slidably connected to the first optical axis (604). The clamping frame (6) is threaded on one side and connected to the second lead screw (8). The other side is slidably sleeved on the second optical axis (10). The second lead screw (8) and the second optical axis (10) are installed on the right side of the support platform (1) through the bracket (7). The top of the second lead screw (8) passes through the bracket (7) and is connected to the second servo motor (9).

2. The rapid stem-leaf separation device for tobacco leaves with stems according to claim 1, characterized in that, The moving rod (502) is fixedly connected to a fixing plate (504) at one end outside the separating cylinder (3), and a tension spring (505) is provided between the fixing plate (504) and the fixing block (501).

3. The rapid stem-leaf separation device for tobacco leaves with stems according to claim 1, characterized in that, The support platform (1) is connected to the bottom plate (101), and a collection frame (11) is set on the bottom plate (101). The collection frame (11) is located below the separation cylinder (3).

4. The rapid stem-leaf separation device for tobacco leaves with stems according to claim 1, characterized in that, Each clamping block (602) has a rubber protective pad (603) on its inner side.

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