Hand-held tobacco seedling leaf cutting machine

By introducing an adjustable handle length and a quick-change blade disc structure into a portable tobacco seedling leaf shear, the problems of non-adjustable handle length and inconvenient blade disc replacement are solved, thereby achieving operator comfort and efficient use of the equipment.

CN223349157UActive Publication Date: 2025-09-19HENGYANG COUNTY BRANCH HENGYANG COMPANY OF HUNANTOBACCO
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Patent Information

Application Number
CN202422921264.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-09-19
Estimated Expiration
2034-11-28

AI Technical Summary

Technical Problem

The handle length of the existing portable tobacco seedling leaf shears cannot be adjusted, which causes fatigue to the operator, and the blade disc is inconvenient to replace, which affects the pruning efficiency.

Method used

A locking mechanism with adjustable handle length and a structure for quickly changing the cutter disc are designed, including components such as limit blocks, threaded rods, knobs and rubber pads, so that the handle length can be adjusted according to the operator's height, and the cutter disc can be quickly disassembled and installed through the insertion seat and threaded rod.

Benefits of technology

It effectively avoids operator fatigue caused by bending over, improves pruning efficiency, simplifies the replacement process of the cutter disc, and improves the ease of use and maintenance efficiency of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a handheld tobacco seedling leaf cutting machine which comprises a machine shell, mounting boxes are fixedly connected to the two ends of one side of the top end of the inner wall of the machine shell, driving motors are fixedly installed on the inner walls of the mounting boxes, the output ends of the driving motors penetrate through the bottom ends of the mounting boxes to be provided with locking mechanisms, and cutter heads are installed at the bottoms of the locking mechanisms. Stand columns are fixedly connected to the two sides of the top of the machine shell, U-shaped handles are inserted into the two stand columns, a connecting base is fixedly connected to one side of the bottom end of each U-shaped handle, a spring is fixedly connected to the inner wall of each connecting base, a limiting block is fixedly connected to one end of each spring, and a plurality of limiting openings are evenly formed in the side walls, close to the connecting bases, of the stand columns. According to the portable tobacco seedling leaf cutting machine, the length of the lifting handle can be adjusted according to the height of an operator, the situation that the operator needs to bend down for cutting operation, and fatigue is prone to happening is avoided, the disc is convenient to disassemble, the disc can be rapidly replaced after being damaged, and the maintenance efficiency is high.
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Description

Technical Field

[0001] The utility model relates to the technical field of leaf shears, in particular to a portable tobacco seedling leaf shear. Background Art

[0002] The main purpose of leaf cutting of tobacco seedlings is to promote the healthy growth of tobacco seedlings and improve the quality of later growth.

[0003] The efficiency of pruning tobacco seedlings can be improved by using a tobacco seedling leaf shear, but the existing portable tobacco seedling leaf shear has the following disadvantages:

[0004] (1) The handle length of the existing portable tobacco seedling leaf shears cannot be adjusted according to the operator's height, so the operator often needs to bend over to operate during the leaf shearing process, which easily causes fatigue, and the collection effect of the cut leaves is not good;

[0005] (2) The existing portable tobacco seedling leaf shears lack a quick-replacement structure and are easily damaged during the pruning process. Replacement takes a long time and is inefficient. Summary of the Invention

[0006] The purpose of the present utility model is to provide a portable tobacco seedling leaf shear to solve the problems raised in the above background technology that the handle length of the existing portable tobacco seedling leaf shear cannot be adjusted according to the height of the operator, so the operator often needs to bend over to operate during the leaf shearing process, which easily causes fatigue and poor effect in collecting the cut leaves. The blade of the portable tobacco seedling leaf shear lacks a quick replacement structure, is easily damaged during the pruning of the tobacco seedlings, and replacement takes a long time, resulting in low efficiency.

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a portable tobacco seedling leaf shear, comprising a casing, both ends of one side of the top inner wall of the casing are fixedly connected to an installation box, a driving motor is fixedly installed on the inner wall of the installation box, the output end of the driving motor is passed through the bottom end of the installation box and a locking mechanism is installed, a knife disc is installed at the bottom of the locking mechanism, both sides of the top of the casing are fixedly connected to columns, a U-shaped handle is inserted into the inside of the two columns, one side of the bottom end of the U-shaped handle is fixedly connected to a connecting seat, the inner wall of the connecting seat is fixedly connected to a spring, one end of the spring is fixedly connected to a limiting block, and a number of limiting openings are evenly opened on the side walls of the columns near the connecting seat, a fan is fixedly installed on one end of both sides of the casing, and a blower is fixedly connected on one end of both sides of the inner wall of the casing.

[0008] When using a portable tobacco seedling leaf shearing machine according to the present technical solution, the length of the handle can be adjusted according to the height of the operator, avoiding the need to bend over for pruning operations which can easily cause fatigue. The disc is easy to disassemble and can be quickly replaced after damage, and the maintenance efficiency is high.

[0009] As a preferred technical solution of the present invention, locking grooves are provided on both sides of the top of the cutter head. The locking mechanism includes a plug-in seat, two grooves, two threaded rods, two knobs, and two locking blocks. The plug-in seat is fixedly connected to the output end of the drive motor. Grooves are provided on both sides of the inner wall of the plug-in seat. A threaded rod is threadedly connected to one side of the inner wall of the groove. One end of the threaded rod is rotatably connected to the locking block via a bearing. One end of the locking block is engaged with the inner wall of the locking groove. The other end of the threaded rod is fixedly connected to the knob. Turning the knob can ultimately drive the locking block to move linearly.

[0010] As a preferred technical solution of the present invention, the top and bottom of the inner wall of the groove are both provided with a slide groove, and the top and bottom ends of the locking block are respectively slidably connected to the two slide grooves. The slide grooves guide and limit the movement of the locking block to improve stability.

[0011] As a preferred technical solution of the present invention, a rubber pad is fixedly connected to one side of the inner wall of the locking groove. The rubber pad can increase friction and make the locking of the cutter disc more stable.

[0012] As a preferred technical solution of the present invention, one end of the limit block is engaged with the inner wall of one of the limit openings. The end of the limit block is engaged in the limit opening to fix the position of the U-shaped handle.

[0013] As a preferred technical solution of the present invention, a shell cover is engaged at the top of the shell, and a handle is fixedly connected to the middle of the top of the shell cover. After the shell cover is removed, the broken leaves inside the shell can be discharged.

[0014] As a preferred technical solution of the present invention, a mesh plate is fixedly connected to the bottom of one end of the housing, and an inclined plate is fixedly connected to one side of the bottom end of the inner wall of the housing. The inclined plate makes it difficult for the shredded leaves to flow back to the cutting area.

[0015] As a preferred technical solution of the present invention, the middle fixed sleeve at the top of the U-shaped handle is provided with an anti-slip sleeve, which makes the handle more stable and less likely to slide when held in hand.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By pressing the limit block at the rear column into the connecting seat, the lock is released and the position of the U-shaped handle can be adjusted up and down. After completion, the limit block will pop out under the action of the spring and engage with the limit port at the corresponding position to fix it. In this way, the handle length of the portable tobacco seedling leaf shear can be adjusted according to the height of the operator, avoiding the need to bend over for pruning, which is easy to get tired. The two blades rotating in opposite directions can drive the cut leaves into the inside of the casing. The fan is started to introduce air and blow it out from the nozzle, continuing to push the broken leaves inward, so that the broken leaves can be effectively collected deep inside the casing, which is more convenient.

[0018] 2. When the cutter disc is damaged, the cutter disc can be disassembled by turning the knobs on both sides of the insertion seat above it to drive the threaded rod to rotate, so that the locking block moves out of the locking groove. After replacing and installing a new cutter disc, turn the knob to move the locking block so that it is stuck in the locking groove on the top of the cutter disc and tighten it to complete the installation. Therefore, the cutter disc on the tobacco seedling leaf shear is easy to disassemble and can be quickly replaced after damage, which is highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the column of the utility model;

[0022] Figure 4 It is an enlarged view of part A of the present utility model;

[0023] Figure 5 It is a cross-sectional view of the insertion seat of the utility model.

[0024] In the figure: 1. Casing; 2. Mounting box; 3. Drive motor; 4. Cutter head; 5. Column; 6. U-shaped handle; 7. Anti-slip sleeve; 8. Connecting seat; 9. Spring; 10. Limit block; 11. Limit opening; 12. Shell cover; 13. Handle; 14. Inclined plate; 15. Locking mechanism; 151. Insertion seat; 152. Groove; 153. Threaded rod; 154. Knob; 155. Locking block; 16. Locking groove; 17. Slide groove; 18. Rubber pad; 19. Fan; 20. Nozzle; 21. Screen. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a portable tobacco seedling leaf shearing machine, comprising a casing 1, both ends of one side of the top inner wall of the casing 1 are fixedly connected to a mounting box 2, the inner wall of the mounting box 2 is fixedly installed with a driving motor 3, the output end of the driving motor 3 is passed through the bottom end of the mounting box 2 and a locking mechanism 15 is installed, and a knife disc 4 is installed at the bottom of the locking mechanism 15, which plays a shearing role.

[0027] When in use, hold the U-shaped handle 6 to trim the tobacco seedlings, turn on the external power supply and switch, start the two drive motors 3, drive the cutter discs 4 on both sides below to rotate at high speed, and hold the device over the tobacco seedling ground to cut the leaves of the tobacco seedlings. By pressing the limit block 10 at the rear column 5, it returns to the connecting seat 8. At this time, the lock is released and the position of the U-shaped handle 6 can be adjusted up and down. After completion, the limit block 10 will pop out at the action of the spring 9 and engage with the limit port 11 at the corresponding position to fix it. The handle length of the portable tobacco seedling leaf shear can be adjusted according to the height of the operator to avoid the need to bend over for pruning operations, which is easy to get tired.

[0028] The top and bottom ends of the locking block 155 are respectively provided with a sliding groove 17, and the top and bottom ends of the locking block 155 are slidably connected to the two sliding grooves 17 to play a guiding role. A rubber pad 18 is fixedly connected to one side of the inner wall of the locking groove 16 to improve the installation stability.

[0029] During use, when the cutter disc 4 is damaged, the threaded rod 153 is driven to rotate by turning the knobs 154 on both sides of the insertion seat 151 above it. Since one end of the threaded rod 153 is connected to the locking block 155 through a bearing, and under the guidance of the slide groove 17, it can drive the locking block 155 to move in a straight line and disengage it from the locking groove 16, and the cutter disc 4 can be disassembled. After replacing and installing a new cutter disc 4, turn the knob 154 to move the locking block 155 so that it is stuck in the locking groove 16 at the top of the cutter disc 4. Tighten the knob 154, and the setting of the rubber pad 18 can increase the friction force, so that the cutter disc 4 can be tightly installed on the locking mechanism 15.

[0030] One end of the limit block 10 is engaged with the inner wall of one of the limit openings 11 to play a locking role. The top of the casing 1 is engaged with a casing cover 12, and the middle part of the top of the casing cover 12 is fixedly connected with a handle 13 for easy disassembly. The bottom of one end of the casing 1 is fixedly connected with a mesh plate 21 for air circulation. One side of the bottom end of the inner wall of the casing 1 is fixedly connected with an inclined plate 14 to play a blocking role. The middle fixed sleeve at the top of the U-shaped handle 6 is provided with an anti-slip sleeve 7 to increase friction.

[0031] When in use, the position of the U-shaped handle 6 can be adjusted by inserting the limit block 10 into different limit openings 11. The provided silicone anti-slip cover 7 makes it less likely to slide and more stable when the device is held in the hand. The two blade discs 4 rotating in opposite directions can knock the cut leaves into the interior of the casing 1. The fan 19 is started to introduce air and blow it out from the nozzle 20, continuing to push the broken leaves inward, so that the broken leaves can be effectively collected deep inside the casing 1. The provided mesh plate 21 facilitates the discharge of air, and the provided inclined plate 14 prevents the broken leaves from flowing back to the cutting area. After work is completed, the shell cover 12 can be opened with the help of the handle 13 to discharge the broken leaves inside.

[0032] When in use, the utility model is a portable tobacco seedling leaf shearing machine. The user holds the U-shaped handle 6 to perform the tobacco seedling pruning operation. After the external power supply and the switch are turned on, the two drive motors 3 are started to drive the cutter discs 4 on the lower sides to rotate at high speed. The device is passed over the tobacco seedling ground to shear the leaves of the tobacco seedlings. By pressing the limit block 10 at the rear column 5, it returns to the connecting seat 8. At this time, the lock is released and the position of the U-shaped handle 6 can be adjusted up and down. After completion, the limit block 10 will pop out under the action of the spring 9 and engage with the limit opening 11 at the corresponding position to play a fixing role. Therefore, the handle length of the portable tobacco seedling leaf shearing machine can be adjusted according to the height of the operator, avoiding the need to bend over to perform pruning operations that are easy to get tired. The two cutter discs 4 rotating in opposite directions can drive the cut leaves into the casing 1 The fan 19 is started to introduce air and blow it out from the nozzle 20, continuing to push the broken leaves to the inside, so that the broken leaves can be effectively collected deep inside the casing 1, which is more convenient. When the cutter disc 4 is damaged, the threaded rod 153 is driven to rotate by turning the knobs 154 on both sides of the insertion seat 151 above it. Since one end of the threaded rod 153 is connected to the locking block 155 through a bearing, and under the guidance of the slide groove 17, it can drive the locking block 155 to move in a straight line and disengage it from the locking groove 16, and the cutter disc 4 can be disassembled. After replacing and installing a new cutter disc 4, turn the knob 154 to move the locking block 155 so that it is stuck in the locking groove 16 at the top of the cutter disc 4 and tighten it to complete the installation. Therefore, the cutter disc 4 on the tobacco seedling leaf shear is easy to disassemble and can be quickly replaced after damage, with high efficiency.

Claims

1. A portable tobacco seedling leaf shear, comprising a housing (1), characterized in that: Both ends of one side of the top end of the inner wall of the casing (1) are fixedly connected to the installation box (2), the inner wall of the installation box (2) is fixedly installed with a driving motor (3), the output end of the driving motor (3) is installed with a locking mechanism (15) through the bottom end of the installation box (2), and the bottom of the locking mechanism (15) is installed with a knife disc (4), both sides of the top of the casing (1) are fixedly connected to the columns (5), the interiors of the two columns (5) are plugged with U-shaped handles (6), one side of the bottom end of the U-shaped handle (6) is fixedly connected to the connecting seat (8), the inner wall of the connecting seat (8) is fixedly connected to a spring (9), one end of the spring (9) is fixedly connected to a limiting block (10), and a plurality of limiting openings (11) are evenly opened on the side wall of the column (5) near the connecting seat (8), one end of each side of the casing (1) is fixedly installed with a fan (19), and one end of each side of the inner wall of the casing (1) is fixedly connected with a nozzle (20).

2. The portable tobacco seedling leaf shear according to claim 1, characterized in that: Locking grooves (16) are provided on both sides of the top of the cutter disc (4); the locking mechanism (15) comprises a plug-in seat (151), two grooves (152), two threaded rods (153), two knobs (154) and two locking blocks (155); the plug-in seat (151) is fixedly connected to the output end of the drive motor (3); grooves (152) are provided on both sides of the inner wall of the plug-in seat (151); a threaded rod (153) is threadedly connected to one side of the inner wall of the groove (152); one end of the threaded rod (153) is rotatably connected to the locking block (155) through a bearing, and one end of the locking block (155) is engaged with the inner wall of the locking groove (16); the other end of the threaded rod (153) is fixedly connected to the knob (154).

3. The portable tobacco seedling leaf shear according to claim 2, characterized in that: The top end and the bottom end of the inner wall of the groove (152) are both provided with sliding grooves (17), and the top end and the bottom end of the locking block (155) are respectively slidably connected to the two sliding grooves (17).

4. The portable tobacco seedling leaf shear according to claim 2, characterized in that: A rubber pad (18) is fixedly connected to one side of the inner wall of the locking groove (16).

5. The portable tobacco seedling leaf shear according to claim 1, characterized in that: One end of the limiting block (10) is engaged with the inner wall of one of the limiting openings (11).

6. The portable tobacco seedling leaf shear according to claim 1, characterized in that: A housing cover (12) is engaged with the top end of the housing (1), and a handle (13) is fixedly connected to the middle portion of the top end of the housing cover (12).

7. The portable tobacco seedling leaf shear according to claim 1, characterized in that: A mesh plate (21) is fixedly connected to the bottom of one end of the casing (1), and an inclined plate (14) is fixedly connected to one side of the bottom end of the inner wall of the casing (1).

8. The portable tobacco seedling leaf shear according to claim 1, characterized in that: A middle fixed sleeve at the top end of the U-shaped handle (6) is provided with an anti-slip sleeve (7).