Leakage-proof structure of tea leaf packaging machine

Abstract

The utility model discloses a tea packaging machine leak protection material structure, including work table, the work table top is installed with the hopper, the work table top and located the hopper output end below is installed with the discharge cylinder, the work table top one side is fixed with the mounting panel, the outside of discharge cylinder is fixed with a plurality of sets of rings, wherein the top rotary connection of the ring of discharge cylinder output end has the baffle, the mounting panel is rotatively connected with the floating rod, and the transmission mechanism is established between the floating rod and the baffle. The utility model discloses through the structural design of floating rod, baffle and transmission mechanism, makes when a roll of packaging film to break the film when using up, and the floating rod falls, and through transmission mechanism drives the baffle to rotate and closes the output end of discharge cylinder, thereby effectively avoids the situation of the staff to replace the packaging film and occurs the situation of the material leakage, reduces the waste of tea, and the production cost is reduced, on the other hand, through the floating rod and transmission mechanism drive baffle movement's mode does not need electric power, pure mechanical linkage, and simple structure, high reliability.

Description

Technical Field

[0001] This utility model relates to the field of tea packaging technology, and in particular to a leak-proof structure for tea packaging machines. Background Technology

[0002] In the tea production process, tea packaging is an important part. With the development of technology, the degree of automation in tea packaging is getting higher and higher, and it has gradually developed from traditional manual packaging to automated packaging. A large number of automated tea packaging machines have also appeared on the market.

[0003] Most automated packaging systems include a film unwinding structure, a film guiding structure, a tea feeding structure, a film conveying structure, and structures for side heat sealing, top and bottom heat sealing, and cutting during packaging. During packaging, the film is typically unwound by the unwinding structure and then guided by the film guiding structure. The bottom of the film is then heat-sealed by the top and bottom heat sealing structure, and the sides are heat-sealed by the side heat sealing structure. The tea is then fed into the film by the tea feeding structure, and the film containing the tea is conveyed to the area below the top and bottom heat sealing structure by the conveying structure. Finally, the top of the packaged tea is heat-sealed and cut by the top and bottom heat sealing structure to complete the packaging process.

[0004] Traditional automated packaging machines typically consist of a feeding hopper and a discharge cylinder located below the hopper. During operation, loose tea leaves are poured into the hopper, and a conveying structure is installed inside the discharge cylinder. This conveying structure intermittently transports the tea leaves into the packaging film for packaging. However, most traditional tea packaging machines lack a mechanism to close the discharge cylinder. When a roll of packaging film is used up, its end detaches from the unwinding roller, causing the film to lose tension. If the operator does not promptly shut down the machine and replace the film, tea leaves often continue to leak from the discharge cylinder, resulting in waste and increased costs. Furthermore, if the leaked tea leaves fall onto the mechanical structure below, it may affect the machine's normal operation.

[0005] Based on this, those skilled in the art have proposed an anti-backflow device for tea packaging machines, providing a new solution to the aforementioned technical problems. Utility Model Content

[0006] Therefore, it is necessary to provide a leak-proof structure for tea packaging machines to address the problems raised in the background section above.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] The leak-proof structure of the tea packaging machine specifically includes a workbench, a feeding hopper installed on the top of the workbench, a discharge cylinder installed on the top of the workbench and below the output end of the feeding hopper, an mounting plate fixed on one side of the top of the workbench, and several collars fixed on the outer side of the discharge cylinder. A baffle is rotatably connected to the top of the collar located at the output end of the discharge cylinder. A floating rod is rotatably connected to the mounting plate, and a transmission mechanism is provided between the floating rod and the baffle.

[0009] Preferably, pulleys are rotatably connected to the inner side of the top of several of the collars, and a drive belt is connected to the outer side of several of the pulleys.

[0010] Preferably, the transmission mechanism includes a first transmission rod fixed to one end of one of the pulleys, a first support frame fixed to the top of the workbench, the first transmission rod being rotatably connected to the inner side of the first support frame, a second transmission rod fixed to the end of the first transmission rod away from the baffle, and a first guide groove being provided on the inner side of the second transmission rod.

[0011] Preferably, the transmission mechanism further includes a first actuating rod fixed to one end of the floating rod near the second transmission rod. The first actuating rod is adapted to the first guide groove and is inserted into and movably connected to the inner side of the first guide groove.

[0012] Preferably, the transmission mechanism further includes a connecting rod disposed on the top of the floating rod and located at one end of the second transmission rod. An arc-shaped connecting plate is fixed to one end of the connecting rod near the second transmission rod. An arc-shaped guide groove is provided on the inner side of the arc-shaped guide groove and the first guide groove. A second actuating rod adapted to the arc-shaped guide groove and the first guide groove is provided on the inner side of the arc-shaped guide groove and the first guide groove. The second actuating rod is movably connected to the inner side of the arc-shaped guide groove and the first guide groove.

[0013] Preferably, a first groove is formed on the inner side of the top of the floating rod, the connecting rod is slidably connected to the inner side of the first groove, a second groove is formed on the side of the floating rod away from the arc-shaped connecting plate, and a positioning pin is threadedly connected to the inner side of the bottom of the connecting rod. The positioning pin is slidably disposed in the inner side of the second groove and is used to position the connecting rod.

[0014] Preferably, the transmission mechanism includes a fifth transmission rod fixed to one end of one of the pulleys, a first support frame fixed to the top of the worktable, the fifth transmission rod rotatably connected to the inner side of the first support frame, a second bevel gear fixed to the end of the fifth transmission rod away from the pulley, a first bevel gear meshing with one end of the second bevel gear, a fourth transmission rod fixed to the inner side of the first bevel gear, a third support frame fixed to the top of the worktable, the fourth transmission rod rotatably connected to the inner side of the third support frame, a worm gear fixed to the end of the fourth transmission rod away from the first bevel gear, a worm meshing with the bottom of the worm gear, a third transmission rod fixed to the inner side of the worm, a second support frame fixed to the top of the worktable, the third transmission rod rotatably connected to the inner side of the second support frame, a transmission gear fixed to the end of the third transmission rod away from the worm, a drive gear meshing with the top of the transmission gear, the drive gear fixed to the end of the floating rod, and the central axis of the drive gear being collinear with the axis of rotation of the floating rod.

[0015] Preferably, the drive gear is designed to retain only some teeth, and the connection between the drive gear and the transmission gear is a partial meshing connection.

[0016] Preferably, a baffle plate is fixed at the bottom of the side of the baffle near the output end of the discharge cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention utilizes a structural design of a floating rod, a baffle, and a transmission mechanism. When a roll of packaging film is used up and broken, the floating rod falls, and the transmission mechanism drives the baffle to rotate and close the output end of the discharge cylinder. This effectively prevents leakage when workers change the packaging film, reduces tea waste, and lowers production costs. Furthermore, the method of moving the baffle through the floating rod and transmission mechanism requires no electricity, is purely mechanical, and has a simple structure with high reliability. Attached Figure Description

[0019] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a tea packaging machine and a floating rod;

[0021] Figure 2 This is a schematic diagram of the collar and baffle structure;

[0022] Figure 3 This is a schematic diagram showing the state of the floating rod and the baffle when the packaging film is not completely used.

[0023] Figure 4 This is a diagram showing the state of the floating rod when the packaging film is used up;

[0024] Figure 5 This is a structural diagram of the transmission belt, the first transmission rod, and the second transmission rod.

[0025] Figure 6 A schematic diagram of the arc-shaped connecting plate, the arc-shaped guide groove, and the second actuating rod;

[0026] Figure 7 This is a schematic diagram showing the state of the floating rod when it is partially lifted by the packaging film.

[0027] Figure 8 This is a structural schematic diagram of the first slide groove, the second slide groove, and the locating pin;

[0028] Figure 9 This is a schematic diagram of another embodiment of the transmission mechanism of this utility model. Figure 1 ;

[0029] Figure 10 This is a schematic diagram of another embodiment of the transmission mechanism of this utility model. Figure 2 .

[0030] The markings in the diagram are explained as follows:

[0031] 1. Workbench; 2. Feed hopper; 3. Discharge cylinder; 4. Mounting plate; 7. Packaging film; 8. Floating rod; 9. Collar; 10. Baffle; 11. Pulley; 12. Transmission belt; 13. First transmission rod; 14. Second transmission rod; 15. First actuating rod; 16. First guide groove; 17. First support frame; 18. Connecting rod; 19. Arc-shaped connecting plate; 20. Arc-shaped guide groove; 21. Second actuating rod; 22. First slide groove; 23. Second slide groove; 24. Positioning pin; 25. Drive gear; 26. Transmission gear; 27. Third transmission rod; 28. Second support frame; 29. ​​Worm gear; 30. Worm wheel; 31. Fourth transmission rod; 32. Third support frame; 33. First bevel gear; 34. Second bevel gear; 35. Fifth transmission rod; 36. Material stop arc plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] Example 1

[0034] Please refer to Figure 1-10 The leak-proof structure of the tea packaging machine provided by this utility model includes a workbench 1, a feeding hopper 2 installed on the top of the workbench 1, a discharge cylinder 3 installed on the top of the workbench 1 and below the output end of the feeding hopper 2, an mounting plate 4 fixed on one side of the top of the workbench 1, and several collars 9 fixed on the outside of the discharge cylinder 3. A baffle 10 is rotatably connected to the top of the collar 9 located at the output end of the discharge cylinder 3. A floating rod 8 is rotatably connected to the mounting plate 4. A transmission mechanism is provided between the floating rod 8 and the baffle 10. The inside of the feeding hopper 2 is used to place the tea to be packaged. The inside of the discharge cylinder 3 is provided with a conveying auger structure for conveying the tea inside the feeding hopper 2 toward the feeding port at the output end. The conveying auger structure and its conveying principle are existing technologies and will not be described in detail here.

[0035] In use, an unwinding roller is installed on the mounting plate 4 above the floating rod 8, and a power mechanism is provided to drive the unwinding roller to rotate. Several guide rollers are also rotatably installed on the mounting plate 4 between the unwinding roller and the floating rod 8. Unwinding and guiding are existing technologies and will not be described in detail here. It should be noted that the floating rod 8 rotates freely on the mounting plate 4, and the material of the floating rod 8 is usually a metal structure, which has a certain weight. In actual use, the packaging film 7 is unwound by the unwinding roller and passes around the floating rod 8 and several guide rollers in sequence. When the packaging film 7 is not used up, it is in a tense state during the packaging process. At this time, the floating rod 8 is close to a horizontal state. At this time, the packaging film 7 has an upward pulling force on the floating rod 8. When the packaging film 7 is used up, its tension disappears, the force of the packaging film 7 on the floating rod 8 disappears, and the floating rod 8 descends under its own force. It drives the baffle 10 to rotate through the transmission mechanism and closes the output end of the discharge cylinder 3.

[0036] Please refer to Figure 2-5Several collars 9 are rotatably connected to pulleys 11 on their inner top sides, and several pulleys 11 are connected to transmission belts 12 on their outer sides. When one of the pulleys 11 rotates, it will drive all the pulleys 11 to rotate through the transmission belt 12, thereby driving the baffle 10 located at the output end of the discharge cylinder 3 to rotate. It should be noted that, considering that the baffle 10 is close to the packaging film 7 during use, several pulleys 11 are provided in order to prevent the transmission mechanism from interfering with the packaging film 7. The transmission belt 12 is wound around several pulleys 11 for transmission. The installation position of the transmission mechanism is changed in turn so that it drives the baffle 10 to rotate without affecting the normal movement of the packaging film 7. Preferably, in this embodiment, there are two collars 9 and two pulleys 11.

[0037] Please refer to Figure 2-5 The transmission mechanism includes a first transmission rod 13 fixed to one end of one of the pulleys 11. When the first transmission rod 13 rotates, it will drive the pulley 11 connected to it to rotate simultaneously. A first support frame 17 is fixed on the top of the workbench 1. The first transmission rod 13 is rotatably connected to the inner side of the first support frame 17. The first support frame 17 is used to support the first transmission rod 13. A second transmission rod 14 is fixed to the end of the first transmission rod 13 away from the baffle 10. A first guide groove 16 is opened on the inner side of the second transmission rod 14.

[0038] Please refer to Figure 2-5 The transmission mechanism also includes a first actuating rod 15 fixed to one end of the floating rod 8 near the second transmission rod 14. The first actuating rod 15 is adapted to the first guide groove 16. The first actuating rod 15 is inserted into the inner side of the first guide groove 16 and is movably connected to it. When the floating rod 8 is in a nearly horizontal state, that is, when the packaging film 7 is wrapped around the outside of the floating rod 8 and is in a tensioned state, the first actuating rod 15 is located near the middle of the inner side of the first guide groove 16. At this time, the space on both sides of the first actuating rod 15 inside the first guide groove 16 provides the first actuating rod 15 with two directions of movement space.

[0039] In this embodiment, the working principle of preventing leakage is as follows: when the packaging film 7 is used up, the floating rod 8 descends under its own gravity, the first actuating rod 15 moves downward along the first guide groove 16, driving the second transmission rod 14 to rotate counterclockwise, which in turn drives the pulley 11 to rotate counterclockwise, thereby driving the baffle 10 to rotate counterclockwise to close the output end of the discharge cylinder 3, thereby closing the discharge cylinder 3 to prevent leakage.

[0040] Example 2

[0041] In Embodiment 1, during the normal packaging process of the packaging film 7, the packaging film 7 will intermittently move downwards. When the packaging film 7 moves downwards, it will pull the floating rod 8 upwards a short distance. Then the unwinding roller will unwind the packaging film 7 again, and the floating rod 8 will return to its original position. During the continuous rising and falling of the floating rod 8, the first actuating rod 15 will follow the floating rod 8 up and down, thus driving the second transmission rod 14 to intermittently perform small-range reciprocating movements. This will cause the baffle 10 to continuously reciprocate to open outwards and return to its original position, causing the opening size between the baffle 10 and the discharge cylinder 3 to change continuously. This may have a certain impact on the filling and packaging of tea. Therefore, this embodiment is further optimized based on Embodiment 1.

[0042] Please refer to Figure 6-7 The transmission mechanism also includes a connecting rod 18 located at the top of the floating rod 8 and at one end of the second transmission rod 14. An arc-shaped connecting plate 19 is fixed to one end of the connecting rod 18 near the second transmission rod 14. An arc-shaped guide groove 20 is provided on the inner side of the arc-shaped guide groove 20 and the first guide groove 16. A second actuating rod 21 adapted to the arc-shaped guide groove 20 and the first guide groove 16 is provided on the inner side of the arc-shaped guide groove 20 and the first guide groove 16. The second actuating rod 21 is movably connected to the inner side of the arc-shaped guide groove 20 and the first guide groove 16. When the floating rod 8 is in a nearly horizontal state, that is, when the packaging film 7 is wrapped around the outside of the floating rod 8 and is in a tensioned state, the second actuating rod 21 is located near the middle of the inner side of the first guide groove 16 and near the top of the inner side of the arc-shaped guide groove 20.

[0043] It should be noted that the central axis of the arc surface of the two side walls of the arc guide groove 20 is collinear with the central axis of the floating rod 8 when it rotates on the mounting plate 4. This ensures that when the arc connecting plate 19 rotates with the connecting rod 18 and the floating rod 8 and the upper and lower end faces inside the arc guide groove 20 do not contact the second actuating rod 21, it will not drive the second actuating rod 21 to move during the movement. Since the packaging film 7 is wrapped around the outside of the floating rod 8 and is in a taut state, the second actuating rod 21 is located near the middle of the inner side of the first guide groove 16 and near the top of the inner side of the arc guide groove 20. Therefore, when the packaging film 7 moves during the packaging process, causing the floating rod 8 to rise and the bottom end face of the arc guide groove 20 does not contact the second actuating rod 21, its movement does not affect the position of the second actuating rod 21 and will not drive the second actuating rod 21 to move. Therefore, it will not drive the second transmission rod 14 to rotate, that is, it will not affect the position of the baffle 10, thereby avoiding the situation in Embodiment 1 where the opening and closing degree of the baffle 10 changes during the rising process of the floating rod 8.

[0044] It should be noted that in this embodiment, the second lever 21 is made of a lightweight material, so that when it is in a free state, it will not drive the second transmission lever 14 to move due to its own weight.

[0045] In this embodiment, the working principle of preventing leakage is as follows: During the packaging process, when the packaging film 7 moves and drives the floating rod 8 to rise, and the bottom end face of the arc-shaped guide groove 20 does not contact the second actuating rod 21, its movement does not affect the position of the second actuating rod 21, and will not drive the second actuating rod 21 to move. Therefore, it will not drive the second transmission rod 14 to rotate, that is, it will not affect the position of the baffle 10. When the packaging film 7 is used up and the tension disappears, the floating rod 8 descends under its own weight. When the arc-shaped connecting plate 19 follows the floating rod 8 down to the top end face of the arc-shaped guide groove 20 and contacts the second actuating rod 21 and continues to descend, it will drive the second actuating rod 21 to move downward together. At this time, the arc-shaped connecting plate 19 drives the second transmission rod 14 to rotate counterclockwise through the second actuating rod 21, thereby driving the baffle 10 to rotate counterclockwise through the first transmission rod 13, pulley 11 and transmission belt 12 to fit against the output end of the discharge cylinder 3, thereby closing the output end of the discharge cylinder 3 to prevent tea leakage.

[0046] Example 3

[0047] In the above embodiment 2, since the position of the connecting rod 18 remains unchanged, the positions of the arc-shaped connecting plate 19 and the second actuating rod 21 remain unchanged when the floating rod 8 is in a near-horizontal state. Therefore, the position of the second transmission rod 14 remains unchanged, which results in the position of the baffle 10 remaining unchanged. That is, the initial opening and closing degree of the baffle 10 cannot be adjusted, which has certain limitations when used.

[0048] Please refer to Figure 8 The floating rod 8 has a first groove 22 on its top inner side. The connecting rod 18 is slidably connected to the inner side of the first groove 22. The floating rod 8 has a second groove 23 on the side away from the arc-shaped connecting plate 19. The connecting rod 18 has a positioning pin 24 threadedly connected to its bottom inner side. The positioning pin 24 is slidably set inside the second groove 23 and is used to position the connecting rod 18. The position of the connecting rod 18 on the floating rod 8 can be adjusted by setting the first groove 22 and the second groove 23. The positioning pin 24 is used to position the connecting rod 18. When positioning, tighten the positioning pin 24 so that it abuts against the inner wall of the first groove 22. The position of the connecting rod 18 can be adjusted to change the initial position of the second actuating rod 21 when the floating rod 8 is in a near-horizontal state. Therefore, the initial tilt angle of the second transmission rod 14 can be adjusted, thereby adjusting the initial opening angle of the baffle 10, so as to facilitate the feeding of tea leaves according to actual needs.

[0049] Example 4

[0050] This embodiment discloses another implementation of the transmission mechanism.

[0051] Please refer to the details. Figure 9-10The transmission mechanism includes a fifth transmission rod 35 fixed to one end of one of the pulleys 11. A first support frame 17 is fixed to the top of the worktable 1. The fifth transmission rod 35 is rotatably connected to the inner side of the first support frame 17. A second bevel gear 34 is fixed to the end of the fifth transmission rod 35 away from the pulley 11. A first bevel gear 33 is meshed to one end of the second bevel gear 34. A fourth transmission rod 31 is fixed to the inner side of the first bevel gear 33. A third support frame 32 is fixed to the top of the worktable 1. The fourth transmission rod 31 is rotatably connected to the inner side of the third support frame 32. A worm gear 30 is fixed at the end of the first bevel gear 33 away from the first bevel gear 31. A worm 29 is meshed with the bottom of the worm gear 30. A third transmission rod 27 is fixed inside the worm 29. A second support frame 28 is fixed on the top of the workbench 1. The third transmission rod 27 is rotatably connected to the inside of the second support frame 28. A transmission gear 26 is fixed at the end of the third transmission rod 27 away from the worm 29. A drive gear 25 is meshed with the top of the transmission gear 26. The drive gear 25 is fixed at the end of the floating rod 8. The central axis of the drive gear 25 is collinear with the axis of rotation of the floating rod 8.

[0052] Please refer to Figure 9-10 The drive gear 25 is designed to retain only some teeth, and the connection between the drive gear 25 and the transmission gear 26 is a partial meshing connection.

[0053] It should be noted that some teeth of the drive gear 25 are retained on the side near the baffle 10, and the transmission between the drive gear 25 and the transmission gear 26, the worm 29 and the worm wheel 30, the first bevel gear 33 and the second bevel gear 34, the pulley 11 and the transmission belt 12 are configured such that when the drive gear 25 rotates counterclockwise, it drives the baffle 10 to rotate counterclockwise. This allows the drive gear 25 to mesh with the transmission gear 26 when the floating rod 8 rotates counterclockwise downwards. The drive gear 25 follows the rotation of the floating rod 8 and drives the transmission gear 26 to rotate, thereby sequentially driving the third transmission rod 27, the worm 29, the worm wheel 30, the fourth transmission rod 31, the first bevel gear 33, the second bevel gear 34, the fifth transmission rod 35, the pulley 11 and the baffle 10 to rotate, thereby causing the baffle 10 to close. When the floating rod 8 rotates clockwise upwards, the drive gear 25 disengages from the transmission gear 26 and the movement of the drive gear 25 will not drive the movement of the transmission gear 26, thus not causing the baffle 10 to move and affecting its position.

[0054] Furthermore, through the design of the worm 29 and worm wheel 30, the position of the baffle 10 can be self-locked, preventing it from moving under its own gravity when the drive gear 25 and the transmission gear 26 are disengaged.

[0055] When it is necessary to adjust the initial position of the baffle 10, simply rotate the transmission gear 26 or the third transmission rod 27 manually while the drive gear 25 and the transmission gear 26 are not meshed. The adjustment method is convenient and quick.

[0056] Example 5

[0057] In Embodiments 1 to 4, when the baffle 10 is tightly attached to the output port of the discharge cylinder 3, the sealing effect may not be good during long-term use, and a very small amount of tea leaves may still fall out from the gap between the baffle 10 and the output end of the discharge cylinder 3. Therefore, this embodiment further optimizes Embodiments 1 to 4.

[0058] Please refer to Figure 2-10 A baffle 10 is fixed at the bottom of the side of the discharge cylinder 3 near the output end. The baffle 10 is designed to prevent tea leaves from falling and avoid leakage when the baffle 10 is in contact with the output end of the discharge cylinder 3 but there is still a small gap.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A leak-proof structure for a tea packaging machine, comprising a worktable (1), a feeding hopper (2) installed on the top of the worktable (1), a discharge cylinder (3) installed on the top of the worktable (1) and below the output end of the feeding hopper (2), and a mounting plate (4) fixed on one side of the top of the worktable (1), characterized in that, A number of collars (9) are fixed on the outside of the discharge cylinder (3). A baffle (10) is rotatably connected to the top of the collar (9) located at the output end of the discharge cylinder (3). A floating rod (8) is rotatably connected to the mounting plate (4). A transmission mechanism is provided between the floating rod (8) and the baffle (10).

2. The leak-proof structure for a tea packaging machine according to claim 1, characterized in that, A pulley (11) is rotatably connected to the inner side of the top of several of the collars (9), and a transmission belt (12) is connected to the outer side of several of the pulleys (11).

3. The leak-proof structure for a tea packaging machine according to claim 2, characterized in that, The transmission mechanism includes a first transmission rod (13) fixed to one end of one of the pulleys (11), a first support frame (17) fixed to the top of the workbench (1), the first transmission rod (13) being rotatably connected to the inner side of the first support frame (17), and a second transmission rod (14) fixed to the end of the first transmission rod (13) away from the baffle (10), and a first guide groove (16) being provided on the inner side of the second transmission rod (14).

4. The leak-proof structure for a tea packaging machine according to claim 3, characterized in that, The transmission mechanism further includes a first actuating rod (15) fixed to one end of the floating rod (8) near the second transmission rod (14). The first actuating rod (15) is adapted to the first guide groove (16) and is inserted into the inner side of the first guide groove (16) and movably connected thereto.

5. The anti-leakage structure for tea packaging machines according to claim 3, characterized in that, The transmission mechanism further includes a connecting rod (18) disposed on the top of the floating rod (8) and located at one end of the second transmission rod (14). An arc-shaped connecting plate (19) is fixed to one end of the connecting rod (18) near the second transmission rod (14). An arc-shaped guide groove (20) is provided on the inner side of the arc-shaped guide groove (20) and the first guide groove (16). A second actuating rod (21) adapted to the arc-shaped guide groove (20) and the first guide groove (16) is provided on the inner side of the arc-shaped guide groove (20) and the first guide groove (16). The second actuating rod (21) is movably connected to the inner side of the arc-shaped guide groove (20) and the first guide groove (16).

6. The leak-proof structure for a tea packaging machine according to claim 5, characterized in that, The floating rod (8) has a first groove (22) on the inner side of its top. The connecting rod (18) is slidably connected to the inner side of the first groove (22). The floating rod (8) has a second groove (23) on the side away from the arc-shaped connecting plate (19). The connecting rod (18) has a positioning pin (24) threadedly connected to the inner side of its bottom. The positioning pin (24) is slidably disposed in the inner side of the second groove (23) and is used to position the connecting rod (18).

7. The leak-proof structure for a tea packaging machine according to claim 2, characterized in that, The transmission mechanism includes a fifth transmission rod (35) fixed to one end of one of the pulleys (11). A first support frame (17) is fixed to the top of the workbench (1). The fifth transmission rod (35) is rotatably connected to the inner side of the first support frame (17). A second bevel gear (34) is fixed to the end of the fifth transmission rod (35) away from the pulley (11). A first bevel gear (33) is meshed to one end of the second bevel gear (34). A fourth transmission rod (31) is fixed to the inner side of the first bevel gear (33). A third support frame (32) is fixed to the top of the workbench (1). The fourth transmission rod (31) is rotatably connected to the inner side of the third support frame (32). A worm gear (30) is fixed at one end away from the first bevel gear (33). A worm (29) is meshed with the bottom of the worm gear (30). A third transmission rod (27) is fixed inside the worm (29). A second support frame (28) is fixed at the top of the workbench (1). The third transmission rod (27) is rotatably connected to the inside of the second support frame (28). A transmission gear (26) is fixed at one end of the third transmission rod (27) away from the worm (29). A drive gear (25) is meshed with the top of the transmission gear (26). The drive gear (25) is fixed at the end of the floating rod (8). The central axis of the drive gear (25) is collinear with the axis of rotation of the floating rod (8).

8. The anti-leakage structure for a tea packaging machine according to claim 7, characterized in that, The drive gear (25) is designed to retain only some teeth, and the connection between the drive gear (25) and the transmission gear (26) is a partial meshing connection.

9. The anti-leakage structure for a tea packaging machine according to claim 1, characterized in that, A baffle plate (36) is fixed at the bottom of the side of the baffle (10) near the output end of the discharge cylinder (3).

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