A high-efficiency stacking device for packaging cartons

Abstract

The application discloses a kind of high-efficiency stacking device for packing carton, belong to carton stacking technical field, including stacker, the inner wall of stacker is provided with grabbing arm, the inner wall of stacker is bolted with fixed plate, and the inner wall of stacker is provided with electric telescopic rod, the output end of electric telescopic rod is fixedly connected with working rod, while the end of external conveying belt is arranged in the inside of stacker;Blowing plate is movably arranged on the inner wall of the fixed plate, and the inside of the fixed plate is rotatably connected with inner shaft.The high-efficiency stacking device for packing carton, in the working process, the blowing plate is supplied with gas by equipment box, the blowing plate blows out airflow in the direction of stacking, carries away moisture, while the air guide plate is in the state of swing, can scatter the airflow blown by blowing plate, make the airflow work range wide, better carry away moisture, in addition, blowing plate side auxiliary blowing is also arranged on the inner wall of the other side of stacker, optimize the effect of dehumidification.

Description

Technical Field

[0001] This invention relates to the field of carton palletizing technology, specifically to a high-efficiency palletizing device for packaging cartons. Background Technology

[0002] Packaging cartons provide physical protection, preventing collisions and blocking moisture and dust. Their regular shape is suitable for storage, transportation, and palletizing. They can carry product markings, are low-cost, easily recyclable, and can be combined with auxiliary materials to enhance cushioning. They are suitable for various warehousing and logistics scenarios and convenient for temporary storage. During the production and processing of packaging cartons, they need to be palletized to ensure neat stacking, save storage space, and facilitate mechanized transportation, ensuring the bulk flow of subsequent processing and delivery. This also prevents cartons from deforming or breaking due to loose handling, improving overall operational efficiency. Therefore, palletizing devices are necessary. Carton palletizing devices are an important component of specialized intelligent packaging equipment. As the core execution equipment at the end of the packaging process, they directly serve the standardized stacking and neat arrangement of finished cartons, adapting to the automation and intelligentization needs of the entire packaging process. They are crucial for achieving a closed-loop packaging process. Key supporting equipment, belonging to the category of specialized intelligent packaging equipment, such as the Chinese utility model patent application with application number 202122210316.1 and application date of 2021-09-13, a carton palletizer, in which the conveying device transports cartons one by one to the stacking device, and the stacking plate in the stacking device pushes the cartons to be stacked neatly on the stacking top plate, thus achieving continuous carton stacking action and improving the production efficiency of stacking. At the same time, the cooperation between the stacking plate and the stacking top plate can neatly stack the cartons; and the Chinese invention patent application with application number 202210763214.9 and application date of 2022-07-01, a carton palletizer, which can improve the stability and reliability of the carton stacking process during operation; Moisture protection is absolutely essential during the cardboard box palletizing process, especially in rainy weather. Moisture protection during cardboard box palletizing can prevent cardboard boxes from absorbing moisture and becoming soft, delaminated, and deformed, prevent the stack from collapsing, protect the contents from moisture damage, and ensure the stability of stacking and handling during warehousing and circulation, reducing losses. If the palletizer does not have a reasonable moisture protection structure, the cardboard boxes will absorb moisture, become soft and delaminated, the stack will be prone to collapse, the contents will be damaged by moisture, and the boxes will be easily damaged during warehousing and handling, increasing losses and affecting circulation efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a high-efficiency palletizing device for packaging cartons, in order to solve the problems mentioned in the background art, such as the lack of a reasonable moisture-proof structure, which leads to cartons absorbing moisture, softening and delaminating, easy collapse of the stack, damage to the contents due to moisture, easy breakage during storage and handling, increased losses and reduced circulation efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency palletizing device for packaging cartons, comprising a palletizer, a gripping arm provided on the inner wall of the palletizer, a fixing plate bolted to the inner wall of the palletizer, and an electric telescopic rod provided on the inner wall of the palletizer, the output end of the electric telescopic rod being fixedly connected to a working rod, and the end of an external conveyor belt being located inside the palletizer; an air blowing plate movably disposed on the inner wall of the fixing plate, and an inner shaft rotatably connected inside the fixing plate, and a rotating shaft movably connected inside the inner shaft; an air guide plate movably connected to the inner shaft via a reciprocating assembly, and an air guide groove formed on the surface of the air guide plate; a blower plate fixedly connected to the inner wall of the palletizer, and an auxiliary plate also connected to the inner wall of the palletizer, an airbag being bonded to the upper surface of the auxiliary plate, and a nozzle being provided on the surface of the blower plate, with a cleaning ring movably disposed inside the nozzle; a lower pressure plate fixedly connected to the side of the working rod, and the cleaning ring being connected to the lower pressure plate via a reversing assembly.

[0005] Preferably, the inner wall of the fixing plate is convex, and a connecting shaft is rotatably arranged inside the convex position. An air blowing plate is fixedly connected to the surface of the connecting shaft, and a first gear is fixedly connected to the surface of the connecting shaft.

[0006] Preferably, an equipment box is provided on the inner wall of the fixed plate. When the equipment box is working, it supplies air to the connecting shaft. At the same time, the connecting shaft is symmetrically distributed on both sides of the fixed plate. A first rack is fixedly connected to the lower surface of the working rod, and the first rack is meshed with the first gear.

[0007] Preferably, a second gear is fixedly connected to the surface of the rotating shaft, and a second rack is fixedly connected to the lower surface of the working rod, and the second rack and the second gear are meshed together.

[0008] Preferably, a force-bearing plate is fixedly connected to the surface of the rotating shaft, and the force-bearing plate is inclined. An inner connecting rod is fixedly connected to the inner wall of the fixed plate, and the end of the inner connecting rod is in contact with the surface of the force-bearing plate.

[0009] Preferably, the reciprocating assembly includes a protrusion fixedly connected to the surface of the rotating shaft, a groove is provided inside the inner shaft, and a first spring is fixedly connected to the surface of the inner shaft, with the other side of the first spring fixedly connected to the surface of the rotating shaft.

[0010] Preferably, the air guide grooves are inclined on the surface of the air guide plate, and the air guide grooves are evenly distributed on the surface of the air guide plate. The surface of the air guide plate itself is inclined, and the air guide plates are symmetrically distributed on both sides of the fixed plate.

[0011] Preferably, the lower surface of the pressure plate is in contact with the upper surface of the airbag, and an air inlet pipe is fixedly connected to the side of the airbag, and the other side of the airbag is connected to the blower plate through a delivery pipe.

[0012] Preferably, the reversing assembly includes a long pin fixedly connected to the outer wall of the lower pressure plate, and a push roller is movably provided at the end of the long pin. A connecting rod is fixedly connected between adjacent cleaning rings, and a vertical plate is fixedly connected to the upper surface of the connecting rod. At the same time, a force-bearing block is fixedly connected to the surface of the vertical plate, and both the upper and lower sides of the force-bearing block are inclined.

[0013] Preferably, the force-bearing blocks are evenly distributed on the surface of the vertical plate. In addition, a guide rod is fixedly connected to the surface of the blower plate, and a connecting rod is sleeved on the surface of the guide rod. The connecting rod is connected to the blower plate by a second spring.

[0014] Compared with the prior art, the beneficial effects of this invention are as follows: Adopting a novel structural design, during operation, air is supplied to the air-blowing plate through the equipment box. The air-blowing plate blows airflow in the direction of palletizing, carrying away moisture. Simultaneously, the air guide plate is in a swinging state, which can disperse the airflow blown by the air-blowing plate, making the airflow's working range wider and better removing moisture. Furthermore, a side air-blowing plate is also installed on the inner wall of the other side of the palletizer to assist in air blowing, optimizing the dehumidification effect. The specific details are as follows: (1) The packaging carton uses a high-efficiency palletizing device. The palletizer is equipped with a tray inside. When working, the palletizer is fed by an external conveyor belt, and then the gripping arm grabs the carton and places it on the tray. During this process, the equipment box is preset with temperature and supplies air to the connecting shaft and the air blowing plate. At the same time, the electric telescopic rod works to make the air blowing plate swing. Thus, the air blowing plate can blow out airflow of appropriate temperature from multiple angles, which plays the role of efficiently removing moisture.

[0015] Furthermore, during the operation of the air blowing plate, the inner shaft, the rotating shaft, and the air guide plate are also rotating. As a result, the air guide plate can disperse the airflow blown out by the air blowing plate, making the working range of the airflow wider, and thus achieving better dehumidification.

[0016] (2) The packaging carton uses a high-efficiency palletizing device. When the air guide plate is working, the air guide plate and the rotating shaft will reciprocate linearly in the horizontal direction under the action of the inner connecting rod, the force plate and the first spring. At this time, the working range of the air guide plate is further increased, which can better disperse the airflow and thus make the moisture better carried away.

[0017] Furthermore, the air guide grooves are evenly spaced and inclined on the surface of the air guide plate, which makes the airflow more dispersed.

[0018] (3) The packaging carton uses a high-efficiency palletizing device. During the process of the electric telescopic rod driving the working rod, the lower pressure plate and the long pin to move, the lower pressure plate will intermittently squeeze the air bag, and then the air bag will supply air to the blower plate through the conveying pipe, so that the blower plate plays the role of blowing air and dehumidifying on the side, which improves the work efficiency.

[0019] Furthermore, the surface of the cleaning ring is equipped with a soft brush. During the movement of the long pin, the long pin will push the force block through the push roller, so that the force block and the connecting rod, under the action of the thrust, the second spring and the guide rod, drive the cleaning ring to make reciprocating linear motion in the horizontal direction. In this way, the cleaning ring cleans the inner wall of the nozzle through the soft brush, so that no large particulate impurities remain on the inner wall of the nozzle, thereby ensuring the working efficiency of the blower plate and the nozzle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the palletizer and the gripping arm of the present invention; Figure 2 This is a schematic diagram of the palletizer in the cutting state of the present invention; Figure 3 This is a schematic diagram of the connection structure between the palletizer and the electric telescopic pole of the present invention; Figure 4 This is a schematic diagram of the connection structure between the fixing plate and the air blowing plate of the present invention; Figure 5 This is a schematic diagram of the connection structure between the connecting shaft and the first gear of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the connection structure between the rotating shaft and the force-bearing plate of the present invention; Figure 8 This is a schematic diagram of the internal shaft section structure of the present invention; Figure 9 This is a schematic diagram of the connection structure between the working rod and the lower pressure plate of the present invention; Figure 10 This is a schematic diagram of the connection structure between the cleaning ring and the connecting rod of the present invention.

[0021] In the diagram: 1. Palletizer; 2. Gripping arm; 3. Fixed plate; 4. Electric telescopic rod; 5. Working rod; 6. First rack; 7. Connecting shaft; 8. Air blowing plate; 9. First gear; 10. Inner shaft; 11. Rotating shaft; 12. Air guide plate; 13. Second rack; 14. Second gear; 15. Air guide groove; 16. Inner connecting rod; 17. Force plate; 18. Protrusion; 19. Groove; 20. First spring; 21. Lower pressure plate; 22. Air blowing plate; 23. Auxiliary plate; 24. Airbag; 25. Conveying pipe; 26. Long pin; 27. Push roller; 28. Cleaning ring; 29. ​​Connecting rod; 30. Vertical plate; 31. Force block; 32. Guide rod; 33. Second spring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0023] Please see Figures 1-10 The present invention provides the following technical solution: a high-efficiency palletizing device for packaging cartons.

[0024] Example 1: By using the air blowing plate 8 and the air guide plate 12, the airflow blown out by the air blowing plate 8 can be dispersed, which can better remove moisture and thus better prevent dampness. Figures 1-6 As shown, the system includes a palletizer 1, a gripping arm 2 on the inner wall of the palletizer 1, a fixing plate 3 bolted to the inner wall of the palletizer 1, an electric telescopic rod 4 on the inner wall of the palletizer 1, a working rod 5 fixedly connected to the output end of the electric telescopic rod 4, and the end of the external conveyor belt located inside the palletizer 1; an air blowing plate 8, which is movably mounted on the inner wall of the fixing plate 3, and an inner shaft 10 is rotatably connected inside the fixing plate 3, and a rotating shaft 11 is movably connected inside the inner shaft 10; an air guide plate 12, which is movably connected to the inner shaft 10 through a reciprocating assembly, and an air guide groove 15 is opened on the surface of the air guide plate 12; a lower pressure plate 21 is fixedly connected to the side of the working rod 5, and a cleaning ring 28 is connected to the lower pressure plate 21 through a reversing assembly.

[0025] The inner wall of the fixed plate 3 is raised, and a connecting shaft 7 is rotatably installed inside the raised position. An air blowing plate 8 is fixedly connected to the surface of the connecting shaft 7, and a first gear 9 is fixedly connected to the surface of the connecting shaft 7. An equipment box is installed on the inner wall of the fixed plate 3. When the equipment box is working, it supplies air to the connecting shaft 7. The connecting shaft 7 is symmetrically distributed on both sides of the fixed plate 3. A first rack 6 is fixedly connected to the lower surface of the working rod 5, and the first rack 6 and the first gear 9 are meshed.

[0026] The palletizer 1 has an internal pallet. During operation, the palletizer 1 is fed by an external conveyor belt, and then the gripper arm 2 picks up the cartons and places them on the pallet. When placing materials, the gripper arm 2 places them from right to left on the pallet. (The gripper arm 2 is articulated and uses positioning sensors and a vision system to identify the position of the cartons. It is driven by a drive system and uses the gripper to pick up the cartons and move according to a preset stacking pattern, number of layers, and spacing program trajectory to accurately stack the cartons layer by layer on the pallet. After completion, the linked conveyor mechanism removes the stack. The entire process is automated and can adapt to the palletizing needs of different carton sizes.) During this process, the equipment box is preset with a temperature. Simultaneously, air is supplied to the connecting shaft 7 and the air blowing plate 8. At the same time, the electric telescopic rod 4 works, driving the working rod 5, the first rack 6, and the second rack 13 to work. At this time, the connecting shaft 7 drives the air blowing plate 8 to swing under the action of the first rack 6 and the first gear 9. Thus, the air blowing plate 8 can blow out airflow of appropriate temperature from multiple angles, which plays a role in efficiently removing moisture. At the same time, the air guide plate 12 and the air guide groove 15 can disperse the airflow of the air blowing plate 8 and expand the working range of the airflow. After stacking the cardboard boxes on the pallet, the pallet is removed, and then the cardboard boxes are packed and stored. Packaging further optimizes the moisture resistance of the cardboard boxes.

[0027] Example 2: Unlike Example 1, by using a reciprocating component, the air guide plate 12 can perform reciprocating linear motion in the horizontal direction, thereby further expanding the working range of the air guide plate 12, such as... Figures 6-8 As shown, a second gear 14 is fixedly connected to the surface of the rotating shaft 11, a second rack 13 is fixedly connected to the lower surface of the working rod 5, and the second rack 13 and the second gear 14 are meshed together. A force-bearing plate 17 is fixedly connected to the surface of the rotating shaft 11, and the force-bearing plate 17 is inclined. An inner connecting rod 16 is fixedly connected to the inner wall of the fixing plate 3, and the end of the inner connecting rod 16 is in contact with the surface of the force-bearing plate 17. The reciprocating assembly includes a protrusion 18 fixedly connected to the surface of the rotating shaft 11, a groove 19 is provided inside the inner shaft 10, and a first spring 20 is fixedly connected to the surface of the inner shaft 10. The other side of the first spring 20 is fixedly connected to the surface of the rotating shaft 11. The air guide groove 15 is inclined on the surface of the air guide plate 12 and is evenly distributed on the surface of the air guide plate 12. The surface of the air guide plate 12 itself is inclined, and the air guide plate 12 is symmetrically distributed on both sides of the fixed plate 3.

[0028] When the second rack 13 is working, it cooperates with the second gear 14 to make the inner shaft 10 reciprocate. At this time, the inner shaft 10 drives the rotating shaft 11 to rotate synchronously through the protrusion 18 and the groove 19. When the rotating shaft 11 rotates, it drives the force plate 17 to rotate synchronously. At this time, the force plate 17 will be pushed intermittently by the inner connecting rod 16. When the force plate 17 is pushed, the force plate 17 and the rotating shaft 11 slide inside the inner shaft 10. At this time, the first spring 20 is squeezed. When the force plate 17 is not pushed, the force plate 17 moves back under the action of the first spring 20. Then the rotating shaft 11 drives the air guide plate 12 to move in the horizontal direction. At this time, the air guide plate 12 will better disperse the airflow and improve the working efficiency.

[0029] Example 3: Unlike Example 2, the reversing component allows the cleaning ring 28 to clean the inside of the nozzle, preventing large particles from remaining. Figure 9 and Figure 10 As shown, a blower plate 22 is fixedly connected to the inner wall of the palletizer 1, and an auxiliary plate 23 is also connected to the inner wall of the palletizer 1. An air bag 24 is bonded to the upper surface of the auxiliary plate 23. At the same time, a nozzle is provided on the surface of the blower plate 22, and a cleaning ring 28 is movably arranged inside the nozzle. The lower surface of the lower pressure plate 21 is attached to the upper surface of the air bag 24, and an air inlet pipe is fixedly connected to the side of the air bag 24. The other side of the air bag 24 is connected to the blower plate 22 through a conveying pipe 25.

[0030] The reversing assembly includes a long pin 26 fixedly connected to the outer wall of the lower pressure plate 21, and a push roller 27 movably disposed at the end of the long pin 26. A connecting rod 29 is fixedly connected between adjacent cleaning rings 28, and a vertical plate 30 is fixedly connected to the upper surface of the connecting rod 29. At the same time, a force-bearing block 31 is fixedly connected to the surface of the vertical plate 30, and the upper and lower sides of the force-bearing block 31 are inclined. The force-bearing blocks 31 are evenly distributed on the surface of the vertical plate 30. In addition, a guide rod 32 is fixedly connected to the surface of the blower plate 22, and the connecting rod 29 is sleeved on the surface of the guide rod 32. The connecting rod 29 and the blower plate 22 are connected by a second spring 33.

[0031] During the process of the electric telescopic rod 4 driving the working rod 5, the lower pressure plate 21, and the long pin 26 to move, the lower pressure plate 21 will intermittently squeeze the air bag 24. When the air bag 24 is squeezed, the air bag 24 supplies air to the blower plate 22 through the delivery pipe 25. When the air bag 24 is not squeezed, the air bag 24 inhales air and expands through the air inlet pipe. That is, the air bag 24 supplies air to the blower plate 22 through the delivery pipe 25, so that the blower plate 22 plays the role of blowing air and dehumidifying on the side, thus improving work efficiency. The surface of the cleaning ring 28 is equipped with a soft brush. During the movement of the long pin 26, the long pin 26 will intermittently push the force block 31 through the push roller 27. When the force block 31 is pushed, the force block 31, the vertical plate 30, the connecting rod 29, and the cleaning ring 28 will move in the horizontal direction. At this time, the second spring 33 is squeezed. When the force block 31 is not pushed, the force block 31, the vertical plate 30, the connecting rod 29, and the cleaning ring 28 will reset under the action of the second spring 33. Then the cleaning ring 28 will make reciprocating linear motion in the horizontal direction. The cleaning ring 28 will clean the inner wall of the nozzle through the soft brush, so that no large particulate impurities remain on the inner wall of the nozzle, thereby ensuring the working efficiency of the blower plate 22 and the nozzle.

[0032] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency palletizing device for packaging cartons, comprising a palletizer (1), wherein a gripping arm (2) is provided on the inner wall of the palletizer (1), a fixing plate (3) is bolted to the inner wall of the palletizer (1), and an electric telescopic rod (4) is provided on the inner wall of the palletizer (1), wherein a working rod (5) is fixedly connected to the output end of the electric telescopic rod (4), and the end of an external conveyor belt is provided inside the palletizer (1); Its features are: An air blowing plate (8) is movably disposed on the inner wall of the fixed plate (3), and the fixed plate (3) is rotatably connected to an inner shaft (10), and the inner shaft (10) is movably connected to a rotating shaft (11). An air guide plate (12) is movably connected to the inner shaft (10) via a reciprocating assembly, and an air guide groove (15) is provided on the surface of the air guide plate (12). A blower plate (22) is fixedly connected to the inner wall of the palletizer (1). An auxiliary plate (23) is also connected to the inner wall of the palletizer (1). An air bag (24) is bonded to the upper surface of the auxiliary plate (23). At the same time, a nozzle is provided on the surface of the blower plate (22), and a cleaning ring (28) is movably provided inside the nozzle. The working rod (5) is fixedly connected to a lower pressure plate (21) on its side, and the cleaning ring (28) is connected to the lower pressure plate (21) through a reversing assembly.

2. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The inner wall of the fixing plate (3) is raised, and a connecting shaft (7) is rotatably arranged inside the raised position. An air blowing plate (8) is fixedly connected to the surface of the connecting shaft (7), and a first gear (9) is fixedly connected to the surface of the connecting shaft (7).

3. The high-efficiency palletizing device for packaging cartons according to claim 2, characterized in that: The inner wall of the fixed plate (3) is provided with an equipment box. When the equipment box is working, it supplies air to the connecting shaft (7). At the same time, the connecting shaft (7) is symmetrically distributed on both sides of the fixed plate (3). The lower surface of the working rod (5) is fixedly connected with a first rack (6), and the first rack (6) is meshed with the first gear (9).

4. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The surface of the rotating shaft (11) is fixedly connected to a second gear (14), and the lower surface of the working rod (5) is fixedly connected to a second rack (13), and the second rack (13) and the second gear (14) are meshed.

5. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: A force-bearing plate (17) is fixedly connected to the surface of the rotating shaft (11), and the force-bearing plate (17) is inclined. An inner connecting rod (16) is fixedly connected to the inner wall of the fixing plate (3), and the end of the inner connecting rod (16) is in contact with the surface of the force-bearing plate (17).

6. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The reciprocating assembly includes a protrusion (18) fixedly connected to the surface of the rotating shaft (11), a groove (19) is provided inside the inner shaft (10), and a first spring (20) is fixedly connected to the surface of the inner shaft (10), and the other side of the first spring (20) is fixedly connected to the surface of the rotating shaft (11).

7. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The air guide groove (15) is inclined on the surface of the air guide plate (12), and the air guide groove (15) is evenly distributed on the surface of the air guide plate (12). The surface of the air guide plate (12) itself is inclined, and the air guide plate (12) is symmetrically distributed on both sides of the fixed plate (3).

8. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The lower surface of the pressure plate (21) is in contact with the upper surface of the airbag (24), and an air inlet pipe is fixedly connected to the side of the airbag (24), and the other side of the airbag (24) is connected to the blower plate (22) through the delivery pipe (25).

9. The high-efficiency palletizing device for packaging cartons according to claim 1, characterized in that: The reversing assembly includes a long pin (26) fixedly connected to the outer wall of the lower pressure plate (21), and a push roller (27) is movably provided at the end of the long pin (26). A connecting rod (29) is fixedly connected between adjacent cleaning rings (28), and a vertical plate (30) is fixedly connected to the upper surface of the connecting rod (29). At the same time, a force-bearing block (31) is fixedly connected to the surface of the vertical plate (30), and the upper and lower sides of the force-bearing block (31) are inclined.

10. The high-efficiency palletizing device for packaging cartons according to claim 9, characterized in that: The force-bearing blocks (31) are evenly distributed on the surface of the vertical plate (30). In addition, a guide rod (32) is fixedly connected to the surface of the blower plate (22), and a connecting rod (29) is sleeved on the surface of the guide rod (32). At the same time, the connecting rod (29) and the blower plate (22) are connected by a second spring (33).

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