Self-vibration turnover paper tidying machine

Abstract

The invention relates to the technical field of paper processing equipment, in particular to a self-vibration turnover paper tidying machine which comprises a base, a mounting hole is formed in one side of the base in a penetrating mode, a rotating shaft is rotatably connected to the inner wall of the mounting hole, an overturning ring is fixedly connected to the surface of the rotating shaft, and a connecting plate is fixedly connected to the top of the surface of the overturning ring. And a fixing part is arranged at the top of the connecting plate. According to the full-automatic double-sided paper processing device, the self-weight triggering type clamping mechanism adopts a pure mechanical linkage principle, paper of different thicknesses and weights can be automatically adapted, damage to the paper is avoided while reliable clamping is ensured, a unique overturning system is matched with a vibration leveling function, seamless connection of double-sided processing of the paper is achieved, the working efficiency is greatly improved, and the production cost is reduced. The integrated intelligent cleaning system controls the motion trail of the dust removal assembly through a precise cam mechanism, works cooperatively with the airflow system, and effectively keeps the working environment clean.

Description

Technical Field

[0001] The present invention relates to the technical field of paper processing equipment, in particular to a self-vibrating turnover paper finishing machine. Background Art

[0002] In traditional paper processing equipment, manual intervention is usually required to complete the operations of fixing, flipping and flattening paper, which is not only inefficient but also difficult to ensure the consistency of processing quality. Existing equipment often uses simple mechanical clamping or electrostatic adsorption to fix paper, which can easily cause paper damage or loose fixation. When processing on both sides, most equipment lacks automatic flipping function and requires manual operation, which increases work intensity and time cost. In addition, conventional paper flattening devices mostly use a single vibration or flattening method, which is difficult to completely eliminate paper wrinkles, and lack an effective dust removal system. It is easy to produce paper scraps during operation, affecting the service life of the equipment. To address these problems, it is urgently needed to develop a full-process intelligent processing equipment that can automatically complete paper fixing, flipping, flattening and cleaning to improve work efficiency and operation quality. Summary of the Invention

[0003] To this end, the present invention provides a self-vibrating turnover paper finishing machine to solve the above-mentioned problems.

[0004] The present invention provides the following technical solution: a self-vibrating turnover paper finishing machine, comprising a base, a mounting hole being formed through one side of the base, a rotating shaft being rotatably connected to the inner wall of the mounting hole, a flip ring being fixedly connected to the surface of the rotating shaft, a connecting plate being fixedly connected to the top of the flip ring, and a fixing component being provided on the top of the connecting plate; The fixing component includes a first supporting plate, the bottom of the first supporting plate is fixedly connected to the top of the connecting plate, and the fixing component is used for self-fixing of paper.

[0005] As a preferred solution of the present invention, the left and right sides of the front and rear sides of the top of the first support plate are fixedly connected to the first limit frame, the inner wall of the first limit frame is slidably connected to the first slide, the right side of the first support plate on the left and the left side of the first support plate on the right are fixedly connected to the second support plate, the left and right sides of the bottom of the first support plate are fixedly connected to the third support plate, the inner wall of the third support plate is rotatably connected to the bidirectional screw rod, the left side of the bidirectional screw rod is fixedly connected to the first rotating rod, the right side of the bidirectional screw rod is fixedly connected to the second rotating rod, the bottom of the first support plate is fixedly connected to the electric-controlled lock, the inner wall of the electric-controlled lock is electrically connected to the surface of the second rotating rod, the left end of the first rotating rod is fixedly connected to the first synchronous wheel, the bottom of the first support plate is fixedly connected to the fourth support plate, and the bottom of the second support plate is installed with a spring, and the bottom of the spring is fixedly connected to the top of the first support plate.

[0006] As a preferred solution of the present invention, the inner wall of the fourth support plate is rotatably connected to a third rotating rod, the surface of the third rotating rod is fixedly connected to a first gear, the left side of the second support plate is fixedly connected to a first tooth plate, the first tooth plate is meshed with the first gear, the left end of the third rotating rod is fixedly connected to a second synchronous wheel, and the surfaces of the first synchronous wheel and the second synchronous wheel are sleeved with synchronous belts.

[0007] As a preferred solution of the present invention, the left and right sides of the surface of the bidirectional screw are threadedly connected with a movable plate, the surface of the movable plate is slidably connected with a movable sleeve, the inner side of the movable sleeve is fixedly connected with a splint, the surface of the movable sleeve is slidably connected to the inner wall of the second support plate, and the rear side of the top of the second support plate is fixedly connected with a ventilation baffle.

[0008] As a preferred solution of the present invention, the front side of the top of the first support plate is fixedly connected to a vibrator, the front and rear sides of the left and right sides of the vibrator are fixedly connected to a support frame, the bottom of the support frame is fixedly connected to a fan, the left front side of the second support plate is fixedly connected to a first fixing plate, the left side of the first fixing plate is fixedly connected to a second fixing plate, the left side of the second fixing plate is fixedly connected to a second tooth plate, the left side of the back surface of the fan is fixedly connected to a second limit frame, the left side of the fan is fixedly connected to an L-shaped plate, the inner wall of the L-shaped plate is rotatably connected to a fourth rotating rod, the surface of the fourth rotating rod is fixedly connected to a second gear, and the second tooth plate is meshed with the second gear.

[0009] As a preferred solution of the present invention, the surface of the fourth rotating rod is fixedly connected to a cylindrical cam, the inner wall of the second limit frame is slidably connected to a second slide, the right side of the second slide is fixedly connected to a dust grille, the front side of the dust grille is in contact with the back surface of the fan, the bottom of the second slide is fixedly connected to a driven rod, and the surface of the cylindrical cam is provided with a reciprocating groove connected end to end, and the groove wall of the reciprocating groove is slidably connected to the surface of the driven rod.

[0010] As a preferred solution of the present invention, a rotating motor is fixedly connected to the right side of the base, and the output end of the rotating motor is fixedly connected to the right end of the rotating shaft via a coupling.

[0011] As a preferred solution of the present invention, soft bristles are installed at the contact point between the front side of the dust grille and the rear side of the fan, the reciprocating groove includes an inclined ascending section, a horizontal maintaining section and an inclined descending section, the reciprocating groove forms a continuous closed-loop trajectory, the end of the driven rod is provided with a wear-resistant ceramic coating, and the driven rod is clearance-matched with the reciprocating groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the self-weight triggered clamping mechanism adopts a pure mechanical linkage principle, which can automatically adapt to papers of different thicknesses and weights, ensuring reliable clamping while avoiding damage to the paper. The unique flipping system is combined with the vibration leveling function to achieve seamless double-sided processing of the paper, greatly improving work efficiency. The integrated intelligent cleaning system controls the motion trajectory of the dust removal component through a precision cam mechanism, and works in conjunction with the airflow system to effectively keep the working environment clean. The whole machine adopts a modular design concept, and each functional unit is independent of each other and organically coordinated, which is convenient for maintenance and ensures operational reliability. The optimized transmission structure and low noise design make the equipment run more smoothly and quietly. The equipment realizes full process automation from paper fixation, double-sided processing to cleaning and maintenance through ingenious mechanical linkage design, which improves work efficiency while ensuring processing quality, showing good practical value and innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the local structure in; Figure 3 For the present invention Figure 2 Schematic diagram of the local structure in; Figure 4 For the present invention Figure 3 Schematic diagram of the local structure in; Figure 5 For the present invention Figure 3 A magnified view of the cleaning component structure; Figure 6 For the present invention Figure 5 A in the enlarged view.

[0014] In the figure: 1. base; 2. mounting hole; 3. rotating shaft; 4. rotating motor; 5. flip ring; 6. fixing part; 7. connecting plate; 8. ventilation baffle; 9. vibrator; 10. support frame; 11. fan; 12. first fixing plate; 13. second fixing plate; 14. second tooth plate; 15. L-shaped plate; 16. fourth rotating rod; 17. second gear; 18. cylindrical cam; 19. second limiting frame; 20. second slide plate; 21. driven rod; 22. reciprocating groove; 23. dust shield; 601, first A support plate; 602, a first limit frame; 603, a second support plate; 604, a first slide; 605, a spring; 606, a third support plate; 607, an electric lock; 608, a bidirectional screw rod; 609, a movable plate; 610, a second rotating rod; 611, a movable sleeve; 612, a first rotating rod; 613, a first synchronous wheel; 614, a second synchronous wheel; 615, a synchronous belt; 616, a fourth support plate; 617, a third rotating rod; 618, a first gear; 619, a first tooth plate; 620, a splint. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figures 1-6 The technical solution provided by the present invention specifically includes the following embodiments: Embodiment: A self-vibrating turnover paper finishing machine comprises a base 1, a mounting hole 2 is formed through one side of the base 1, a rotating shaft 3 is rotatably connected to the inner wall of the mounting hole 2, a flip ring 5 is fixedly connected to the surface of the rotating shaft 3, a connecting plate 7 is fixedly connected to the top of the flip ring 5, and a fixing component 6 is provided on the top of the connecting plate 7; the fixing component 6 comprises a first support plate 601, the bottom of the first support plate 601 is fixedly connected to the top of the connecting plate 7, and the fixing component 6 is used for self-fixing of paper; the left and right sides of the front and rear sides of the top of the first support plate 601 are fixedly connected to the first limit frame 602, the inner wall of the first limit frame 602 is slidably connected to the first slide plate 604, the right side of the left first support plate 601 and the left side of the right first support plate 601 are fixedly connected to the second support plate 603, the left and right sides of the bottom of the first support plate 601 A third support plate 606 is fixedly connected to both sides, and a bidirectional screw rod 608 is rotatably connected to the inner wall of the third support plate 606. A first rotating rod 612 is fixedly connected to the left side of the bidirectional screw rod 608, and a second rotating rod 610 is fixedly connected to the right side of the bidirectional screw rod 608. The bottom of the first support plate 601 is fixedly connected to an electric lock 607, and the inner wall of the electric lock 607 is electrically connected to the surface of the second rotating rod 610. The left end of the first rotating rod 612 is fixedly connected to a first synchronous wheel 613. The bottom of the first support plate 601 is fixedly connected to a fourth support plate 616. A spring 605 is installed at the bottom of the second support plate 603, and the bottom of the spring 605 is fixedly connected to the top of the first support plate 601. The right side of the base 1 is fixedly connected to a rotating motor 4, and the output end of the rotating motor 4 is fixedly connected to the right end of the rotating shaft 3 through a coupling; By utilizing the weight of the paper itself as a power source and realizing the automatic clamping function through sophisticated mechanical linkage, when the operator places the paper on the first support plate 601, the downward pressure of the paper causes the spring 605 to compress and deform, driving the second support plate 603 to move downward. This action converts the linear motion into rotational motion through the precise engagement of the first tooth plate 619 and the first gear 618, driving the third rotating rod 617 to start rotating. The synchronous belt 615 transmission system ensures that the power is accurately transmitted to the bidirectional screw 608, so that the movable plates 609 on both sides move synchronously toward the center, pushing the clamping plate 620 to complete the closing action. The electric control lock 607 immediately activates the locking function after the clamping is in place, ensuring that the fixed state is stable and reliable. The entire clamping process is completely completed automatically by the mechanical structure, without any external power input or manual intervention, reflecting an excellent degree of automation and ease of use. This design is particularly suitable for work scenarios where paper needs to be frequently replaced, greatly improving work efficiency. The flipping system realizes fully automated operation of double-sided paper processing, significantly improving work efficiency. When single-sided processing is completed, the rotating motor 4 drives the flip ring 5 to start a precise 180-degree rotation through the rotating shaft 3. The connecting plate 7 serves as a key connecting part to ensure that the clamping mechanism remains stable during the flipping process. The ventilation baffle 8 automatically adjusts its angle when the flipping action is started, effectively preventing airflow disturbances from affecting paper positioning. The electric lock 607 remains locked during the entire flipping process, eliminating the risk of paper falling off. It is particularly worth mentioning that the system automatically starts the second round of vibration leveling process after flipping into place to ensure that the other side of the paper can also achieve the same processing effect. The entire flipping process is smooth and the positioning is precise, fully demonstrating the reliability of the mechanical transmission. This design is particularly suitable for application scenarios requiring double-sided scanning or processing, greatly simplifying the operation process. The inner wall of the fourth support plate 616 is rotatably connected to the third rotating rod 617, and the surface of the third rotating rod 617 is fixedly connected to the first gear 618. The left side of the second support plate 603 is fixedly connected to the first tooth plate 619, and the first tooth plate 619 is meshed with the first gear 618. The left end of the third rotating rod 617 is fixedly connected to the second synchronous wheel 614, and the surfaces of the first synchronous wheel 613 and the second synchronous wheel 614 are sleeved with a synchronous belt 615; the left and right sides of the surface of the bidirectional screw rod 608 are threadedly connected to the movable plate 609, and the surface of the movable plate 609 is slidably connected to the movable sleeve 611. The inner side of the movable sleeve 611 is fixedly connected to the clamping plate 620, and the surface of the movable sleeve 611 is slidably connected to the inner wall of the second support plate 603. The top of the second support plate 603 The rear side is fixedly connected to the ventilation baffle 8; the front side of the top of the first support plate 601 is fixedly connected to the vibrator 9, the front and rear sides of the left and right sides of the vibrator 9 are fixedly connected to the support frame 10, the bottom of the support frame 10 is fixedly connected to the fan 11, the left front side of the second support plate 603 is fixedly connected to the first fixing plate 12, the left side of the first fixing plate 12 is fixedly connected to the second fixing plate 13, the left side of the second fixing plate 13 is fixedly connected to the second tooth plate 14, the left side of the back surface of the fan 11 is fixedly connected to the second limiting frame 19, the left side of the fan 11 is fixedly connected to the L-shaped plate 15, the inner wall of the L-shaped plate 15 is rotatably connected to the fourth rotating rod 16, the surface of the fourth rotating rod 16 is fixedly connected to the second gear 17, and the second tooth plate 14 is meshed with the second gear 17; Efficient operation is achieved through intelligent mechanical linkage; after the vibrator 9 is started, it generates mechanical vibrations of a specific frequency, which are transmitted to the paper through the support plate, effectively eliminating tiny wrinkles and unevenness on the surface of the paper; at the same time, the meshing transmission of the second gear 17 and the second tooth plate 14 drives the cylindrical cam 18 to rotate at a constant speed, and the reciprocating groove 22 on its surface accurately controls the movement trajectory of the driven rod 21, so that the dust shield grille 23 performs reciprocating linear motion according to a preset program; the movement of the fan 11 and the dust shield grille 23 is kept in perfect synchronization, and when the soft bristles of the dust shield grille 23 sweep across the fan 11, the optimal airflow generated by the fan 11 immediately removes the dust raised on the surface of the fan 11, and also removes the dust in the paper to avoid clogging of the fan 11; the various components of the entire system work in harmony and operate smoothly, which not only ensures the flatness of the paper, but also achieves an excellent cleaning effect, significantly improving the comfort of subsequent processing or reading; Spring 605 serves as the core sensing element, and its compression automatically changes with the weight of the paper. When handling lighter paper, it produces less deformation, and the bidirectional screw 608, driven by the synchronous belt 615, correspondingly reduces its rotation angle to provide moderate clamping force. When handling heavier paper, the deformation increases, enhancing the clamping force. The precise coordination of the first synchronous wheel 613 and the second synchronous wheel 614 ensures accurate power transmission and avoids asynchrony. The electric lock 607 uses advanced electromagnetic braking technology, locking immediately after clamping in place, providing reliable holding force. Users can also change the spring preload according to special needs through a simple adjustment mechanism, enabling the system to handle a variety of special paper materials. This intelligent clamping method protects the integrity of the paper while ensuring operational reliability. A cylindrical cam 18 is fixedly connected to the surface of the fourth rotating rod 16. A second slide 20 is slidably connected to the inner wall of the second limit frame 19. A dust shield grille 23 is fixedly connected to the right side of the second slide 20. The front side of the dust shield grille 23 contacts the back surface of the fan 11. A driven rod 21 is fixedly connected to the bottom of the second slide 20. A reciprocating groove 22 connected end to end is formed on the surface of the cylindrical cam 18. The groove wall of the reciprocating groove 22 is slidably connected to the surface of the driven rod 21. Intelligent cleaning operations are achieved through precise mechanical transmission; the cylindrical cam 18 is the core component, and the carefully designed reciprocating groove 22 on its surface is divided into three functionally clear movement ranges: the initial acceleration section ensures that the dust screen 23 quickly approaches the working position; the uniform speed section in the middle section maintains a stable cleaning force; and the deceleration section in the final section achieves a smooth reset; the second slide 20, under the precise guidance of the second limit frame 19, drives the dust screen 23 to complete the movement of the predetermined trajectory; the driven rod 21 is made of special wear-resistant material to ensure that the movement accuracy can be maintained after long-term use; the coordination between this mechanism and the fan 11 has been carefully adjusted to obtain the best airflow coordination in each movement phase of the dust screen 23, which not only ensures the dust removal effect, but also avoids the damage to the paper caused by excessive cleaning of the fan 11; the entire system operates smoothly and reliably, and is easy to maintain; Soft bristles are installed at the contact point between the front side of the dust shield grille 23 and the rear side of the fan 11. The reciprocating groove 22 includes an inclined ascending section, a horizontal maintaining section, and an inclined descending section. The reciprocating groove 22 forms a continuous closed loop trajectory. The end of the driven rod 21 is provided with a wear-resistant ceramic coating, and the driven rod 21 and the reciprocating groove 22 are clearance-matched. The fan 11 is driven by an advanced brushless motor and equipped with an optimized impeller design, which keeps the operating noise at the lowest level while maintaining sufficient air volume; the motion trajectory of the cylindrical cam 18 has been optimized through fluid dynamics, effectively reducing the airflow noise during mechanical movement; the soft bristles of the dust screen 23 are made of special composite materials, which minimizes the friction noise with the paper surface while ensuring the cleaning effect; the L-shaped plate 15 and the second fixed plate 13 form a stable support frame, which effectively suppresses vibration transmission; the fourth rotating rod 16 is equipped with precision bearings to ensure smooth operation; the entire system has also been carefully optimized in terms of energy consumption, and uses intelligent power regulation technology to automatically adjust the operating power according to actual cleaning needs, which not only ensures the cleaning effect but also achieves energy saving and environmental protection.

[0017] The self-vibrating turnover paper straightening machine realizes fully automatic paper processing through mechanical linkage: when the paper is placed on the first support plate 601, its own weight compresses the spring 605, driving the second support plate 603 to move downward, and the third rotating rod 617 is driven to rotate through the engagement of the first tooth plate 619 and the first gear 618, and the bidirectional screw rod 608 drives the clamping plate 620 to automatically clamp through the synchronous belt 615, and is locked by the electric control lock 607; the rotating motor 4 drives the rotating shaft 3 to make the flip ring 5 flip 180°, and cooperate with the ventilation baffle 8 to stabilize the airflow; while the vibrator 9 flattens the paper, the fourth rotating rod 16 drives the cylindrical cam 18 to control the reciprocating motion of the dust shield grille 23, and cooperates with the fan 11 to complete the dust removal operation. The whole machine adopts a modular design, and each component realizes intelligent coordination through precision transmission, combining adaptive clamping, double-sided processing, vibration leveling and dynamic cleaning functions, significantly improving the efficiency and quality of paper processing.

[0018] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A self-vibrating turnover paper finishing machine, characterized by: The invention comprises a base (1), a mounting hole (2) is formed through one side of the base (1), a rotating shaft (3) is rotatably connected to the inner wall of the mounting hole (2), a flip ring (5) is fixedly connected to the surface of the rotating shaft (3), a connecting plate (7) is fixedly connected to the top of the surface of the flip ring (5), and a fixing component (6) is provided on the top of the connecting plate (7); The fixing component (6) comprises a first support plate (601), the bottom of the first support plate (601) is fixedly connected to the top of the connecting plate (7), and the fixing component (6) is used for self-fixing of paper.

2. The self-vibrating turnover paper finishing machine according to claim 1, characterized in that: The left and right sides of the front and rear sides of the top of the first support plate (601) are fixedly connected to the first limit frame (602), the inner wall of the first limit frame (602) is slidably connected to the first slide plate (604), the right side of the left first support plate (601) and the left side of the right first support plate (601) are fixedly connected to the second support plate (603), the left and right sides of the bottom of the first support plate (601) are fixedly connected to the third support plate (606), the inner wall of the third support plate (606) is rotatably connected to the bidirectional screw rod (608), and the left side of the bidirectional screw rod (608) is fixedly connected to the first rotating rod (606). 12), the right side of the bidirectional screw rod (608) is fixedly connected to a second rotating rod (610), the bottom of the first support plate (601) is fixedly connected to an electric lock (607), the inner wall of the electric lock (607) is electrically connected to the surface of the second rotating rod (610), the left end of the first rotating rod (612) is fixedly connected to a first synchronous wheel (613), the bottom of the first support plate (601) is fixedly connected to a fourth support plate (616), the bottom of the second support plate (603) is installed with a spring (605), and the bottom of the spring (605) is fixedly connected to the top of the first support plate (601).

3. The self-vibrating turnover paper finishing machine according to claim 2, characterized in that: The inner wall of the fourth support plate (616) is rotatably connected to a third rotating rod (617), the surface of the third rotating rod (617) is fixedly connected to a first gear (618), the left side of the second support plate (603) is fixedly connected to a first tooth plate (619), the first tooth plate (619) is meshed with the first gear (618), the left end of the third rotating rod (617) is fixedly connected to a second synchronous wheel (614), and the surfaces of the first synchronous wheel (613) and the second synchronous wheel (614) are sleeved with a synchronous belt (615).

4. The self-vibrating turnover paper finishing machine according to claim 2, characterized in that: The left and right sides of the surface of the bidirectional screw rod (608) are both threadedly connected to a movable plate (609), the surface of the movable plate (609) is slidably connected to a movable sleeve (611), the inner side of the movable sleeve (611) is fixedly connected to a clamping plate (620), the surface of the movable sleeve (611) is slidably connected to the inner wall of the second support plate (603), and the rear side of the top of the second support plate (603) is fixedly connected to a ventilation baffle (8).

5. The self-vibrating turnover paper finishing machine according to claim 2, characterized in that: The front side of the top of the first support plate (601) is fixedly connected to a vibrator (9), the front and rear sides of the left and right sides of the vibrator (9) are fixedly connected to a support frame (10), the bottom of the support frame (10) is fixedly connected to a fan (11), the left front side of the second support plate (603) is fixedly connected to a first fixed plate (12), the left side of the first fixed plate (12) is fixedly connected to a second fixed plate (13), the left side of the second fixed plate (13) is fixedly connected to a second tooth plate (14), the left side of the back surface of the fan (11) is fixedly connected to a second limit frame (19), the left side of the fan (11) is fixedly connected to an L-shaped plate (15), the inner wall of the L-shaped plate (15) is rotatably connected to a fourth rotating rod (16), the surface of the fourth rotating rod (16) is fixedly connected to a second gear (17), and the second gear plate (14) is meshed with the second gear (17).

6. The self-vibrating turnover paper finishing machine according to claim 5, characterized in that: The surface of the fourth rotating rod (16) is fixedly connected to a cylindrical cam (18), the inner wall of the second limit frame (19) is slidably connected to a second slide plate (20), the right side of the second slide plate (20) is fixedly connected to a dust screen (23), the front side of the dust screen (23) is in contact with the back surface of the fan (11), the bottom of the second slide plate (20) is fixedly connected to a driven rod (21), the surface of the cylindrical cam (18) is provided with a reciprocating groove (22) connected end to end, and the groove wall of the reciprocating groove (22) is slidably connected to the surface of the driven rod (21).

7. The self-vibrating turnover paper finishing machine according to claim 1, characterized in that: A rotating motor (4) is fixedly connected to the right side of the base (1), and the output end of the rotating motor (4) is fixedly connected to the right end of the rotating shaft (3) via a coupling.

8. The self-vibrating turnover paper finishing machine according to claim 6, characterized in that: Soft bristles are installed at the contact point between the front side of the dust shield grille (23) and the rear side of the fan (11); the reciprocating groove (22) includes an inclined ascending section, a horizontal maintaining section, and an inclined descending section; the reciprocating groove (22) forms a continuous closed loop track; the end of the driven rod (21) is provided with a wear-resistant ceramic coating; the driven rod (21) and the reciprocating groove (22) are clearance-matched.

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