A herbicide labeling device

Abstract

The utility model belongs to the technical field of herbicide labelling device, specifically is a kind of herbicide labelling device, including movable plate, the one side of movable plate is fixedly connected with sliding block, the top side of sliding block is equipped with electrode plate, the inside of mounting plate is equipped with sliding slot, sliding block sliding installation is in the bottom of sliding slot, the middle end sliding installation of sliding slot is limited limit slide block, the bottom side of limit slide block is equipped with electrode piece, start cylinder, piston rod of cylinder extends or retracts, drive movable plate to move up and down in recess, when movable plate moves, sliding block slides in the sliding slot of mounting plate, when sliding block moves to appropriate height with movable plate, electrode plate and electrode piece contact, at this moment, electrode plate and electrode piece send signal to cylinder by controller, cylinder stops action, the height position of label paper sticking is determined, the function of labelling according to different height position of herbicide bottle body is realized, and the flexibility and adaptability of labelling are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of herbicide labeling devices, specifically a herbicide labeling device. Background Technology

[0002] Herbicides are chemical agents used to control or eliminate weeds. In the production and processing of liquid herbicides, product information, instructions for use, and installation warnings need to be displayed on the herbicide bottles through labeling. Therefore, a labeling device is required.

[0003] A Chinese patent with authorization announcement number CN219884330U discloses a herbicide labeling device, including a conveyor with guiding mechanisms on both sides. Each guiding mechanism includes a first positioning block fixedly connected to one side of the conveyor. A threaded rod is threadedly connected to the inner wall of the first positioning block, and a threaded hole is formed in the inner wall of the first positioning block. By setting up the guiding mechanisms, the distance between the two guide plates can be adjusted according to the size of the herbicide bottle to be labeled. This adjustment, through the interaction of the threaded rod and the threaded hole, guides the conveying of the bottle to be labeled, effectively reducing the possibility of the herbicide bottle tipping over during transport and improving the efficiency of labeling the herbicide bottle.

[0004] However, the aforementioned labeling device still has some problems. In practical applications, it lacks the function of adjusting the label position height according to needs. When encountering herbicide bottles of different heights, the labeling device can only apply the label at a fixed height, resulting in the label not being able to be completely affixed to the appropriate position on the bottle. Therefore, a herbicide labeling device is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve the problems mentioned in the background art, this utility model proposes a herbicide labeling device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A herbicide labeling device of this utility model includes a workbench. One end of the workbench has an upward-opening groove. A cylinder is installed on the bottom side of the groove. A movable plate is installed on the actuating end of the cylinder. A sliding block is fixed to one side of the movable plate. An electrode plate is installed on the top side of the sliding block. An mounting plate is installed on the top side of the workbench. A sliding groove is formed inside the mounting plate. The sliding block is slidably installed at the bottom end of the sliding groove. A limit slider is slidably installed at the middle end of the sliding groove. A locking screw is rotatably mounted inside one end of the limiting slider, and one end of the locking screw abuts against the mounting plate. An electrode plate is mounted on the bottom side of the limiting slider, and an indicator needle is mounted on the bottom side of the limiting slider. Several scale lines are equidistantly engraved on one side of the mounting plate. The electrode plate, electrode sheet, and cylinder are all electrically connected to the controller in the device. The controller is used for signal transmission to the electrode plate and electrode sheet, as well as for operation control of the cylinder. This enables the labeling function according to different height positions of the herbicide bottle, improving the flexibility and adaptability of labeling.

[0007] Preferably, a rotating shaft and a rotating shaft are rotatably mounted on the top side of the movable plate. A take-up roller and an unwind roller are respectively mounted on the outer side of the rotating shaft and the rotating shaft. A fixed frame is mounted at one end of the top side of the movable plate, and a drive motor is mounted on the top side of the fixed frame. A connecting shaft is mounted on the output end of the drive motor. A leveling roller is mounted at the bottom end of the connecting shaft, a drive wheel is mounted at the top end of the connecting shaft, and a driven wheel is mounted at the top end of the rotating shaft. The drive wheel and the driven wheel are connected by a belt. An inclined plate is mounted on the movable plate on the side of the leveling roller. The movable plate is equipped with a take-up roller and an unwind roller for taking up and unwinding the label paper, respectively. The drive motor is connected to the drive wheel and the driven wheel by a belt, driving the label paper to flow in the device. The leveling roller helps to eliminate wrinkles in the label paper during the conveying process, ensuring labeling quality. The inclined plate design guides the label paper smoothly from unwinding to rewinding.

[0008] Preferably, the top side of the electrode plate is on the same horizontal line as the bottom side of the take-up roller, the bottom side of the electrode sheet is on the same horizontal line as the lowest position where the label paper is pasted, and the bottom side of the label paper is on the same horizontal line as the bottom side of the take-up roller when assembled, which improves the accuracy of the labeling position.

[0009] Preferably, a through groove is provided in the middle of the workbench, and a support shaft is rotatably installed at both ends of the through groove. A rotating roller is installed on the outside of the support shaft, and a conveyor belt is movably assembled between the outer sides of the rotating roller. A support plate is fixed between the two sides of the through groove and between the top and bottom sides of the conveyor belt. A conveyor motor is installed on one side of the workbench, and one end of the support shaft is connected to the output end of the conveyor motor to realize continuous conveying of herbicide bottles, so that the labeling operation can be carried out continuously and the production efficiency is improved.

[0010] Preferably, a fixing plate is installed at the other end of the top side of the workbench, a hydraulic cylinder is installed on one side of the fixing plate, an installation frame is installed at the working end of the hydraulic cylinder, and clamping rollers are installed between both ends of the installation frame. The clamping rollers are symmetrically installed on both sides of the leveling roller. The clamping rollers and the leveling roller are arranged opposite each other. When labeling, the clamping rollers briefly clamp the herbicide bottle to ensure that the label can be accurately and flatly affixed to the bottle, thereby improving the labeling effect.

[0011] Preferably, a fixed limiting plate is installed on the top side of the workbench on one side of the conveyor belt, and a horizontal plate is installed on the top side of the workbench on the other side of the conveyor belt. A threaded rod and a guide rod are movably installed at both ends of the interior of the horizontal plate. A movable limiting plate is installed at one end of the guide rod, and one end of the threaded rod is rotatably installed inside one end of the movable limiting plate. A handle is installed at the other end of the threaded rod. The movable limiting plate can be adjusted in position by the threaded rod and the guide rod, which realizes the adjustment of the position of the limiting plate according to the herbicide bottles of different sizes, ensuring that the bottles will not deviate from the labeling trajectory during transportation, thus improving the accuracy and stability of labeling.

[0012] The advantages of this utility model are: 1. The present invention is a starting cylinder. The piston rod of the cylinder extends or retracts, driving the movable plate to move up and down in the groove. When the movable plate moves, the sliding block slides in the sliding groove of the mounting plate. When the sliding block moves with the movable plate to a suitable height, the electrode plate contacts the electrode sheet. At this time, the electrode plate and the electrode sheet send a signal to the cylinder through the controller, and the cylinder stops moving, thus determining the height position of the label paper. 2. In the process of conveying bottles by the conveyor belt, the fixed limiting plate of this utility model plays a limiting role on one side of the bottle. For herbicide bottles of different sizes, by turning the handle, the threaded rod is driven to rotate, so that the movable limiting plate will move along the guide rod, thereby adjusting the distance between the movable limiting plate and the fixed limiting plate to accommodate bottles of different sizes. The movable limiting plate and the fixed limiting plate work together to ensure that the bottle will not deviate from the labeling trajectory during the conveying process, thus improving the accuracy and stability of labeling. Attached Figure Description

[0013] 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 these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention; Figure 2 This is a cross-sectional view of the main body of the labeling device; Figure 3 Schematic diagram of the component structure for the labeling device height adjustment assembly; Figure 4 This is a schematic diagram of the first partial structure of the labeling device; Figure 5 This is a schematic diagram of the second part of the labeling device.

[0015] In the diagram: 1. Workbench; 2. Groove; 3. Cylinder; 4. Movable plate; 5. Sliding block; 6. Electrode plate; 7. Mounting plate; 8. Slide groove; 9. Limiting slider; 10. Locking screw; 11. Electrode plate; 12. Indicator needle; 13. Scale line; 14. Rotating shaft; 15. Rotating shaft; 16. Take-up roller; 17. Unwind roller; 18. Fixing frame; 19. Drive motor; 20. Connecting shaft; 21. Leveling roller; 22. Drive wheel; 23. Driven wheel; 24. Belt; 25. Inclined plate; 26. Through groove; 27. Support shaft; 28. Rotating roller; 29. ​​Conveyor belt; 30. Support plate; 31. Conveyor motor; 32. Fixed plate; 33. Hydraulic cylinder; 34. Mounting frame; 35. Clamping roller; 36. Fixed limit plate; 37. Horizontal plate; 38. Threaded rod; 39. Guide rod; 40. Movable limit plate; 41. Handle. Detailed Implementation

[0016] 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 scope of protection of the present utility model.

[0017] Please see Figure 1-4As shown, a herbicide labeling device includes a workbench 1. One end of the workbench 1 has an upward-opening groove 2. A cylinder 3 is mounted on the bottom side of the groove 2. A movable plate 4 is mounted on the actuating end of the cylinder 3. A sliding block 5 is fixedly connected to one side of the movable plate 4. An electrode plate 6 is mounted on the top side of the sliding block 5. An mounting plate 7 is mounted on the top side of the workbench 1. The mounting plate 7 has a sliding groove 8 inside. The sliding block 5 is slidably mounted on the bottom end of the sliding groove 8. A limiting slider 9 is slidably mounted on the middle end of the sliding groove 8. A locking screw 10 is rotatably mounted inside one end of the limiting slider 9. One end of the locking screw 10 is connected to the mounting plate. 7. The limit slider 9 is mounted on the bottom side of the limit slider 9 and the bottom side of the limit slider 9 is mounted on the bottom side of the limit slider 9. Several scale lines 13 are equidistantly engraved on one side of the mounting plate 7. The electrode plate 6, the electrode piece 11 and the cylinder 3 are all electrically connected to the controller in the device. The controller is used for signal transmission of the electrode plate 6 and the electrode piece 11 and operation control of the cylinder 3. The top side of the electrode plate 6 is on the same horizontal line as the bottom side of the take-up roller 16. The bottom side of the electrode piece 11 is on the same horizontal line as the lowest position of the label paper. When the bottom side of the label paper is assembled, it is on the same horizontal line as the bottom side of the take-up roller 16. The movable plate 4 has a rotating shaft 14 and a rotating shaft 15 rotatably mounted on its top side. A take-up roller 16 and an unwind roller 17 are respectively mounted on the outer sides of the rotating shaft 14 and rotating shaft 15. A fixed frame 18 is mounted at one end of the top side of the movable plate 4. A drive motor 19 is mounted on the top side of the fixed frame 18. A connecting shaft 20 is mounted at the output end of the drive motor 19. A leveling roller 21 is mounted at the bottom end of the connecting shaft 20. A drive wheel 22 is mounted at the top end of the connecting shaft 20. A driven wheel 23 is mounted at the top end of the rotating shaft 14. The drive wheel 22 and the driven wheel 23 are connected by a belt 24. An inclined plate 25 is mounted on the side of the movable plate 4 near the leveling roller 21. In practical applications, the labeling device lacks the function to adjust the label height according to requirements. When encountering herbicide bottles of different heights, the labeling device... Labels can only be affixed at a fixed height, making it impossible to affix them completely to the appropriate position on the bottle. Based on the scale line 13, the position of the limiting slider 9 in the slide groove 8 is adjusted by rotating the locking screw 10, so that the electrode plate 11 is located at the lowest position for label pasting, i.e., the indicator needle 12 points to the desired scale position. Then, the limiting slider 9 is fixed by the locking screw 10. Then, the cylinder 3 is activated, and the piston rod of the cylinder 3 extends or retracts, driving the movable plate 4 to move up and down in the groove 2. When the movable plate 4 moves, the sliding block 5 slides in the slide groove 8 of the mounting plate 7. When the sliding block 5 moves to the appropriate height with the movable plate 4, the electrode plate 6 contacts the electrode plate 11. At this time, the electrode plate 6 and the electrode plate 11 send a signal to the cylinder 3 through the controller, and the cylinder 3 stops operating, thus determining the height position for label pasting. Label paper is wound on the unwind roller 17, with the bottom side of the label paper and the bottom side of the take-up roller 16 on the same horizontal line. One end of the label paper is output from the unwind roller 17, passes over the outside of the inclined plate 25, and finally winds onto the take-up roller 16. The drive motor 19 is started, and the connecting shaft 20 at the output end of the drive motor 19 rotates, driving the leveling roller 21 to rotate. At the same time, the drive wheel 22 rotates, driving the rotating shaft 14 and the driven wheel 23 to rotate through the belt 24, thereby causing the take-up roller 16 to rotate, realizing the conveying of the label paper from the unwind roller 17 to the take-up roller 16. During the conveying process, the leveling roller 21 flattens the label paper, eliminates wrinkles, and ensures the flatness of the label paper for accurate labeling later. When the label paper passes the inclined plate 25, the inclined plate 25 bends the label paper, causing the label on the label paper to extend outward, making it easier to stick to the herbicide bottle.

[0018] Please see Figure 1 , 2 As shown in Figures 4 and 5, a through groove 26 is provided in the middle of the workbench 1. Support shafts 27 are rotatably installed at both ends of the through groove 26. Rotating rollers 28 are installed on the outer side of the support shafts 27. A conveyor belt 29 is movably assembled between the outer sides of the rotating rollers 28. A support plate 30 is fixed between the two sides of the through groove 26 and between the top and bottom sides of the conveyor belt 29. A conveyor motor 31 is installed on one side of the workbench 1. One end of the support shaft 27 is connected to the output end of the conveyor motor 31. A fixing plate 32 is installed on the other end of the top side of the workbench 1. A hydraulic cylinder 33 is installed on one side of the fixing plate 32. A mounting frame 34 is installed on the working end of the hydraulic cylinder 33. A clamping roller 35 is installed between both ends of the mounting frame 34. The clamping rollers 35 are symmetrically installed on both sides of the leveling roller 21. The clamping rollers 35 and the leveling roller 21 are arranged opposite to each other. A fixed limiting plate 36 is installed on the top side of the workbench 1, located on one side of the conveyor belt 29. A horizontal plate 37 is installed on the top side of the workbench 1, located on the other side of the conveyor belt 29. A threaded rod 38 and a guide rod 39 are movably installed at both ends of the horizontal plate 37. A movable limiting plate 40 is installed at one end of the guide rod 39, and one end of the threaded rod 38 is rotatably installed inside one end of the movable limiting plate 40. A handle 41 is installed at the other end of the threaded rod 38. During operation, herbicides are chemical agents used to control or eliminate weeds. In the production and processing of liquid herbicides, product information needs to be labeled. The labeling information, instructions for use, and installation warnings are displayed on the herbicide bottles, thus requiring a labeling device. During the conveyor belt 29's transport of the bottles, the fixed limiting plate 36 provides a one-sided limit to the bottles. For herbicide bottles of different sizes, rotating the handle 41 causes the threaded rod 38 to rotate, which in turn moves the movable limiting plate 40 along the guide rod 39, thereby adjusting the distance between the movable limiting plate 40 and the fixed limiting plate 36 to accommodate different bottle sizes. The movable limiting plate 40 and the fixed limiting plate 36 work together to ensure that the bottles do not deviate from the labeling trajectory during transport, improving the accuracy and stability of the labeling. Place one side of the herbicide bottle to be labeled on the conveyor belt 29, start the conveyor motor 31, its output end drives the support shaft 27 to rotate, the rotating roller 28 rotates accordingly, and in turn drives the conveyor belt 29 to move, the conveyor belt 29 transports the bottle to the labeling position. When the bottle reaches the labeling position, the hydraulic cylinder 33 operates, its piston rod extends, and pushes the mounting frame 34 towards the bottle. The clamping roller 35 clamps the bottle. At this time, the clamping roller 35 and the leveling roller 21 are set opposite each other, and the bottle is located between the two. As the label paper is conveyed, when the label paper moves to the appropriate position, the clamping roller 35 pushes the bottle body after the label is pasted, so that the bottle is in close contact with the leveling roller 21, ensuring that the label paper can be accurately and flatly pasted on the bottle body. Then, the piston rod of the hydraulic cylinder 33 retracts, the clamping roller 35 releases the bottle, and the bottle continues to be conveyed away from the labeling position by the conveyor belt 29, completing the labeling process of one bottle. This cycle is repeated to realize the continuous conveying and labeling operation of herbicide bottles.

[0019] Working principle: According to the scale line 13, the position of the limiting slider 9 in the slide groove 8 is adjusted by rotating the locking screw 10, so that the electrode plate 11 is located at the lowest position of the label paper, that is, the indicator needle 12 points to the desired scale position. Then, the limiting slider 9 is fixed by the locking screw 10. Then, the cylinder 3 is started. The piston rod of the cylinder 3 extends or retracts, driving the movable plate 4 to move up and down in the groove 2. When the movable plate 4 moves, the sliding block 5 slides in the slide groove 8 of the mounting plate 7. When the sliding block 5 moves to the appropriate height with the movable plate 4, the electrode plate 6 contacts the electrode plate 11. At this time, the electrode plate 6 and the electrode plate 11 send a signal to the cylinder 3 through the controller, and the cylinder 3 stops moving, thus determining the height position of the label paper. Label paper is wound on the unwind roller 17, with the bottom side of the label paper and the bottom side of the take-up roller 16 on the same horizontal line. One end of the label paper is output from the unwind roller 17, passes over the outside of the inclined plate 25, and finally is wound on the take-up roller 16. The drive motor 19 is started, and the connecting shaft 20 at the output end of the drive motor 19 rotates, driving the leveling roller 21 to rotate. At the same time, the drive wheel 22 rotates, driving the rotating shaft 14 and the driven wheel 23 to rotate through the belt 24, thereby causing the take-up roller 16 to rotate, realizing the conveying of the label paper from the unwind roller 17 to the take-up roller 16. During the conveying process, the leveling roller 21 flattens the label paper, eliminates wrinkles, and ensures the flatness of the label paper for accurate labeling later. When the label paper passes the inclined plate 25, the inclined plate 25 bends the label paper, causing the label on the label paper to extend outward, making it easier to stick to the herbicide bottle. During the conveyor belt 29 conveying the bottles, the fixed limiting plate 36 limits the bottles on one side. For herbicide bottles of different sizes, by turning the handle 41, the threaded rod 38 is driven to rotate, so that the movable limiting plate 40 will move along the guide rod 39, thereby adjusting the distance between the movable limiting plate 40 and the fixed limiting plate 36 to accommodate bottles of different sizes. The movable limiting plate 40 and the fixed limiting plate 36 work together to ensure that the bottles do not deviate from the labeling trajectory during the conveying process, thus improving the accuracy and stability of labeling. Place one side of the herbicide bottle to be labeled on the conveyor belt 29, start the conveyor motor 31, its output end drives the support shaft 27 to rotate, the rotating roller 28 rotates accordingly, and in turn drives the conveyor belt 29 to move, the conveyor belt 29 transports the bottle to the labeling position. When the bottle reaches the labeling position, the hydraulic cylinder 33 operates, its piston rod extends, and pushes the mounting frame 34 towards the bottle. The clamping roller 35 clamps the bottle. At this time, the clamping roller 35 and the leveling roller 21 are set opposite each other, and the bottle is located between the two. As the label paper is conveyed, when the label paper moves to the appropriate position, the clamping roller 35 pushes the bottle body after the label is pasted, so that the bottle is in close contact with the leveling roller 21, ensuring that the label paper can be accurately and flatly pasted on the bottle body. Then, the piston rod of the hydraulic cylinder 33 retracts, the clamping roller 35 releases the bottle, and the bottle continues to be conveyed away from the labeling position by the conveyor belt 29, completing the labeling process of one bottle. This cycle is repeated to realize the continuous conveying and labeling operation of herbicide bottles.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A herbicide labeling device, characterized in that: The system includes a workbench (1), one end of which has an upward-opening groove (2). A cylinder (3) is installed on the bottom side of the groove (2). A movable plate (4) is installed on the working end of the cylinder (3). A sliding block (5) is fixedly connected to one side of the movable plate (4). An electrode plate (6) is installed on the top side of the sliding block (5). An mounting plate (7) is installed on the top side of the workbench (1). A sliding groove (8) is opened inside the mounting plate (7). The sliding block (5) is slidably installed at the bottom end of the sliding groove (8). A limit slider (9) is slidably installed at the middle end of the sliding groove (8). A locking screw (10) is rotatably mounted inside one end of the limiting slider (9). One end of the locking screw (10) abuts against the mounting plate (7). An electrode plate (11) is mounted on the bottom side of the limiting slider (9). An indicator needle (12) is mounted on the bottom side of the limiting slider (9). Several scale lines (13) are equidistantly engraved on one side of the mounting plate (7). The electrode plate (6), the electrode plate (11), and the cylinder (3) are all electrically connected to the controller in the device. The controller is used for signal transmission to the electrode plate (6) and the electrode plate (11), as well as for operation control of the cylinder (3).

2. The herbicide labeling device according to claim 1, characterized in that: The top side of the movable plate (4) is rotatably mounted with a rotating shaft (14) and a rotating shaft (15). A take-up roller (16) and an unwind roller (17) are respectively mounted on the outer side of the rotating shaft (14) and the rotating shaft (15). A fixed frame (18) is mounted on one end of the top side of the movable plate (4). A drive motor (19) is mounted on the top side of the fixed frame (18). A connecting shaft (20) is mounted on the output end of the drive motor (19). A leveling roller (21) is mounted on the bottom end of the connecting shaft (20). A drive wheel (22) is mounted on the top end of the connecting shaft (20). A driven wheel (23) is mounted on the top end of the rotating shaft (14). The drive wheel (22) and the driven wheel (23) are connected by a belt (24). An inclined plate (25) is mounted on the side of the movable plate (4) located on the leveling roller (21).

3. The herbicide labeling device according to claim 2, characterized in that: The top side of the electrode plate (6) is on the same horizontal line as the bottom side of the take-up roller (16), the bottom side of the electrode sheet (11) is on the same horizontal line as the lowest position where the label paper is pasted, and the bottom side of the label paper is on the same horizontal line as the bottom side of the take-up roller (16) when assembled.

4. The herbicide labeling device according to claim 3, characterized in that: The workbench (1) has a through groove (26) in the middle. Both ends of the through groove (26) are rotatably mounted with support shafts (27). Rotating rollers (28) are mounted on the outside of the support shafts (27). A conveyor belt (29) is movably assembled between the outside of the rotating rollers (28). A support plate (30) is fixed between the two sides of the through groove (26) and between the top and bottom sides of the conveyor belt (29). A conveyor motor (31) is mounted on one side of the workbench (1). One end of the support shaft (27) is connected to the output end of the conveyor motor (31).

5. A herbicide labeling device according to claim 4, characterized in that: A fixing plate (32) is installed on the other end of the top side of the workbench (1). A hydraulic cylinder (33) is installed on one side of the fixing plate (32). A mounting frame (34) is installed on the working end of the hydraulic cylinder (33). A clamping roller (35) is installed between both ends of the mounting frame (34). The clamping roller (35) is symmetrically installed on both sides of the leveling roller (21). The clamping roller (35) and the leveling roller (21) are arranged opposite to each other.

6. The herbicide labeling device according to claim 5, characterized in that: A fixed limiting plate (36) is installed on the top side of the workbench (1) on one side of the conveyor belt (29). A horizontal plate (37) is installed on the top side of the workbench (1) on the other side of the conveyor belt (29). A threaded rod (38) and a guide rod (39) are movably installed at both ends of the horizontal plate (37). A movable limiting plate (40) is installed at one end of the guide rod (39). One end of the threaded rod (38) is rotatably installed inside one end of the movable limiting plate (40). A handle (41) is installed at the other end of the threaded rod (38).

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