A paperboard surface automatic cleaning device for carton production

Abstract

The application discloses a kind of paperboard surface automatic cleaning device for carton production, belong to carton cleaning technical field.The device is mainly by conveying frame, cleaning part, connecting piece, cleaning piece and lifting piece is formed, cleaning part uses the fixed plate of carrying carbon fiber brush strip and carbon fiber ball head as cleaning main body, rely on conveying belt to realize continuous paperboard conveying.Cleaning piece is equipped with conical sleeve, hollow cavity, elastic diaphragm, elastic cleaning cloth and elastic reset air bag, utilize air pressure linkage and magnetic attraction structure, so that elastic cleaning cloth can wrap brush strip and complete scale removal.The device solves the problem of traditional paperboard cleaning equipment, such as easy scale accumulation of brush, low cleaning efficiency and poor cleaning effect, carbon fiber brush is wear-resistant and durable, the overall structure linkage is stable, and paperboard cleaning and brush automatic maintenance can be realized synchronously, without manual intervention, with high cleaning efficiency and low operating cost.

Description

Technical Field

[0001] This invention relates to the field of cardboard cleaning technology, and more specifically, to an automatic cleaning device for the surface of cardboard used in cardboard box production. Background Technology

[0002] In the industrial production of cardboard boxes, raw paper is processed into cardboard and finished cardboard boxes through multiple processes such as cutting, creasing, die-cutting, and gluing. The entire production process generates impurities such as paper scraps, fine fibers, and glue residue. A large number of impurities adhere to the surface of the cardboard, which not only affects the processing quality of subsequent printing, lamination, and gluing processes, but also reduces the appearance of the finished cardboard boxes.

[0003] Currently, most cardboard cleaning equipment used in the industry employs ordinary brushes for single-sweep cleaning. However, with prolonged use, ordinary nylon and plastic hard brushes are prone to problems such as bristle bending, wear, and dirt buildup, making it impossible for them to clean the impurities attached to the brush surface on their own, resulting in a continuous decline in cleaning ability.

[0004] In addition, most existing cleaning equipment can only complete single-wheel cardboard cleaning and cannot perform synchronous self-cleaning of cleaning components. It requires manual periodic shutdown to disassemble and clean the brushes, which is cumbersome and incomplete. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an automatic cleaning device for the surface of cardboard used in carton production. This device solves the problems of easy dirt accumulation on brushes, low cleaning efficiency, and poor cleaning effect in traditional cardboard cleaning equipment. The carbon fiber brush is wear-resistant and durable, and the overall structure is stable and interconnected. It can simultaneously achieve cardboard cleaning and automatic brush maintenance without manual intervention, resulting in high cleaning efficiency and low operating costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic cleaning device for the surface of cardboard used in carton production includes a conveyor frame and a cleaning section rotatably mounted on the conveyor frame; the cleaning section includes a fixing plate; a plurality of carbon fiber brush strips are uniformly arranged through the surface of the fixing plate; and carbon fiber ball heads are provided at both ends of the carbon fiber brush strips.

[0007] The upper and lower surfaces of the fixed plate are symmetrically equipped with connectors; the connectors include two U-shaped plates; cleaning components are slidably arranged between the two U-shaped plates; the cleaning components include a lifting plate; several conical sleeves are uniformly fixed through the surface of the lifting plate; a hollow cavity is opened in the inner wall of the top of the conical sleeve; an elastic diaphragm is arranged in the inner wall of the hollow cavity; an elastic cleaning cloth is bonded to the elastic diaphragm.

[0008] The bottom surface of the lifting plate has a storage cavity; an elastic reset airbag is installed inside the storage cavity; a flexible hose is installed between the elastic reset airbag and the hollow cavity; a magnet is installed on the bottom surface of the lifting plate; and a lifting component is installed on the conveyor frame to pull up the corresponding connecting parts.

[0009] The invention is further configured such that: both ends of the fixed plate are fixed with rotating shafts that are rotatably engaged with the conveyor frame; a servo motor that is fixedly connected to the end of a rotating shaft is fixed on the side of the conveyor frame; a number of guide tubes that are adapted to the inner wall of the conical sleeve are uniformly fixed through the surface of the fixed plate; and baffles that are slidably engaged with the lifting plate are symmetrically fixed on the opposite sides of the fixed plate.

[0010] The invention is further configured such that: a connecting shaft is symmetrically arranged through the inner walls of the conveyor frame; a plurality of pulleys are uniformly fixed on the circumferential side of the connecting shaft; a conveyor belt is provided for transmission between two pulleys; and a drive motor is fixedly connected to the end of a connecting shaft on the side of the conveyor frame.

[0011] The invention is further configured as follows: a bidirectional lead screw is rotatably disposed between the inner walls of one U-shaped plate; a limit nut is screwed onto the bidirectional lead screw; a guide rod is fixed between the inner walls of the other U-shaped plate; the sides of the lifting plate are respectively provided with screw holes for screwing onto the bidirectional lead screw and sliding holes for sliding cooperation with the guide rod; a slide rail is fixed to the inner wall of the U-shaped plate; and sliding grooves are provided at both ends of the lifting plate for sliding cooperation with the slide rail.

[0012] The invention is further configured such that: the lifting component includes vertical rods symmetrically fixed to the top of the conveyor frame; a lifting seat is slidably disposed between the two vertical rods; a top plate is fixed between the tops of the two vertical rods; a lifting motor is fixedly installed on the top of the conveyor frame; a screw that rotates with the top plate is fixed at the output end of the lifting motor; and the lifting seat and the screw are screwed together for rotational engagement.

[0013] The invention is further configured such that: a sleeve is symmetrically fixed to the bottom surface of the lifting seat; a plurality of guide square tubes are uniformly and slidably arranged through the inner wall of the sleeve; a stop block and a triangular guide plate are respectively fixed at both ends of the guide square tubes; and a reset spring sleeved on the guide square tube is connected between the stop block and the sleeve.

[0014] The invention is further configured such that: a support platform is fixed to the side of the U-shaped plate; a limit rod is fixed to the top of the support platform; a first conical platform is fixed to the top of the limit rod; and a second conical platform is slidably arranged coaxially on the limit rod.

[0015] The advantages of this invention are: 1. This invention uses carbon fiber brush strips as the core cleaning component, paired with carbon fiber ball heads at both ends. The carbon fiber material is tough, wear-resistant, not easy to bend, and does not shed. It has anti-static properties, which can reduce the static adhesion of paper scraps and fibers. Compared with traditional plastic and nylon brushes, it can clean paper scraps, sticky fibers and slight glue residue on the surface of cardboard at the same time, and clean thoroughly.

[0016] 2. This invention integrates a dedicated self-cleaning structure for the brush. Relying on the air pressure linkage structure of the elastic reset airbag, hollow cavity, elastic diaphragm and elastic cleaning cloth, combined with the lifting component and conical platform guide mechanism, the air pressure wrapped elastic cleaning cloth can closely adhere to the surface of the carbon fiber brush strip, cleaning without dead corners. It can automatically wipe and clean the dirt and residual impurities on the outer wall of the carbon fiber brush strip. The whole process is automated, without the need to stop the machine to disassemble or manually clean the brush, reducing manual labor and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic cleaning device for the surface of cardboard used in carton production according to the present invention.

[0018] Figure 2 This is a schematic diagram of the carbon fiber brush strip of the present invention in a cleaning state.

[0019] Figure 3 For the present invention Figure 2 A structural diagram from a frontal viewpoint.

[0020] Figure 4 For the present invention Figure 3 Enlarged view of region A.

[0021] Figure 5 This is a schematic diagram of the cleaning part of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged view of region B.

[0023] Figure 7 This is a structural schematic diagram of the cleaning unit of the present invention from a frontal view.

[0024] Figure 8 This is a schematic diagram of the structure of the fixing plate of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the carbon fiber brush strip of the present invention.

[0026] Figure 10 This is a schematic diagram of the cleaning component of the present invention.

[0027] Figure 11 This is a structural schematic diagram of the cleaning component of the present invention from a frontal view.

[0028] Figure 12 This is a structural schematic diagram of the cleaning component of the present invention from a bottom-view perspective.

[0029] Figure 13 For the present invention Figure 11 Enlarged view of region C.

[0030] Figure 14This is a schematic diagram of the connector of the present invention.

[0031] In the diagram: 1. Conveyor frame; 2. Cleaning section; 3. Fixing plate; 4. Carbon fiber brush strip; 5. Carbon fiber ball head; 6. Connector; 7. U-shaped plate; 8. Cleaning component; 9. Lifting plate; 10. Conical sleeve; 11. Hollow cavity; 12. Elastic diaphragm; 13. Elastic cleaning cloth; 14. Storage cavity; 15. Elastic reset airbag; 16. Hoses; 17. Rotating shaft; 18. Servo motor; 19. Guide tube; 20. Baffle; 21. Connecting shaft; 22. Pulley; 23. 24. Conveyor belt; 25. Drive motor; 26. Double-acting lead screw; 27. Limit nut; 28. Guide rod; 29. ​​Screw hole; 30. Slide hole; 31. Slide rail; 32. Slide groove; 33. Vertical rod; 34. Lifting seat; 35. Top plate; 36. Lifting motor; 37. Screw; 38. Guide square tube; 39. Stop block; 40. Triangular guide plate; 41. Return spring; 42. Support platform; 43. Limit rod; 44. First conical platform; 45. Second conical platform. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0035] Example 1, please refer to Figure 1-14 The present invention provides the following technical solutions: An automatic cleaning device for the surface of cardboard used in carton production, specifically, includes a conveyor frame 1 and a cleaning part 2 rotatably mounted on the conveyor frame 1; the cleaning part 2 includes a fixing plate 3, on which multiple carbon fiber brush strips 4 are evenly installed, and carbon fiber ball heads 5 are integrally set at both ends of the carbon fiber brush strips 4. The carbon fiber material combines flexibility and wear resistance, ensuring cleaning effect while not easily damaging the surface of the cardboard.

[0036] Connectors 6 are symmetrically installed on the upper and lower ends of the fixed plate 3. The connector 6 consists of two U-shaped plates 7 arranged opposite each other. Cleaning components 8 that can be spliced ​​together are slidably assembled between the two sets of U-shaped plates 7. The main body of the cleaning component 8 is a lifting plate 9. Several conical sleeves 10 are evenly fixed on the lifting plate 9. A hollow cavity 11 is opened inside the top of the conical sleeve 10. An elastic diaphragm 12 is bonded to the inner wall of the hollow cavity 11. An elastic cleaning cloth 13 is fixed to the outer side of the elastic diaphragm 12. Specifically, a hook surface layer is provided on the outer wall of the elastic diaphragm 12, and a rough surface layer is provided on one side of the elastic cleaning cloth 13 to facilitate the subsequent replacement of the elastic cleaning cloth 13.

[0037] The bottom surface of the lifting plate 9 has a storage cavity 14, inside which an elastic reset airbag 15 is installed. The elastic reset airbag 15 is connected to the interior of the hollow cavity 11 via a hose 16. The bottom surface of the lifting plate 9 is equipped with a magnet, which can magnetically attach to the fixed plate 3. The top of the conveyor frame 1 is equipped with a lifting component for pulling and lifting the connecting component 6 and the cleaning component 8 to achieve the self-cleaning action of the brush.

[0038] Working principle of this embodiment: In the initial state of the equipment, the lifting plate 9 is attached to the surface of the fixed plate 3 by the bottom magnet. At this time, the elastic reset airbag 15 is squeezed and stored in the storage cavity 14. The elastic reset airbag 15 is filled with air. After being squeezed, the air is pressed into the hollow cavity 11 through the hose 16. The air pressure pushes the elastic diaphragm 12 to expand outward, so that the elastic cleaning cloth 13 tightly wraps the outside of the carbon fiber brush strip 4. When the squeezing force disappears, the elastic reset airbag 15 rebounds due to its own elasticity, the air inside the hollow cavity 11 flows back, and the elastic diaphragm 12 contracts synchronously.

[0039] Once the production line starts, the conveyor frame 1 carries the cardboard forward, and the carbon fiber brush strips 4 contact the surface of the cardboard to clean up paper scraps, fibers, and other impurities. As the carbon fiber brush strips 4 continue to be used, a large amount of impurities will adhere to their surface. At this time, the lifting component on the conveyor frame 1 is activated, which pulls the connecting component 6 and the cleaning component 8 upward, causing the lifting plate 9 to gradually separate from the fixed plate 3.

[0040] After the lifting plate 9 is disengaged from the magnetic attraction, the elastic reset airbag 15 loses its compressive force and begins to rebound. The gas in the hollow cavity 11 flows back into the elastic reset airbag 15, the elastic diaphragm 12 contracts, and the elastic cleaning cloth 13 loosens its wrapping around the brush. During the overall upward movement of the cleaning component 8, the elastic cleaning cloth 13 rubs against the outer wall of the carbon fiber brush strip 4, thoroughly wiping away the impurities and grime attached to the surface of the carbon fiber brush strip 4.

[0041] After cleaning on one side is completed, the lifting component is reset, the lifting plate 9 is magnetically attached to the fixing plate 3 again, the elastic reset airbag 15 is pressurized and inflated again, and the elastic cleaning cloth 13 is re-wrapped in the carbon fiber brush strip 4, waiting for the next round of self-cleaning operation.

[0042] Example 2, please refer to Figure 1-14 This second embodiment improves upon the first embodiment as follows: Specifically, rotating shafts 17 are fixed at both ends of the fixed plate 3. The rotating shafts 17 are rotatably inserted into the side wall of the conveyor frame 1. A servo motor 18 is installed on the outside of the conveyor frame 1. The output end of the servo motor 18 is fixedly connected to one of the rotating shafts 17, which can drive the fixed plate 3 to rotate as a whole, adjusting the tilt angle of the carbon fiber brush strip 4. A guide tube 19 is fixed on the fixed plate 3 at the position corresponding to the carbon fiber brush strip 4. The guide tube 19 matches the inner wall of the conical sleeve 10 and is used to position the cleaning part 8. Baffles 20 are fixed on both sides of the fixed plate 3 to limit the sliding trajectory of the lifting plate 9 and prevent deviation.

[0043] Two sets of connecting shafts 21 are installed horizontally inside the conveyor frame 1. Several pulleys 22 are fixed on the circumference of the connecting shafts 21. A conveyor belt 23 is sleeved between the pulleys 22 on the same side. A drive motor 24 is installed on the outside of the conveyor frame 1. The drive motor 24 drives the connecting shafts 21 and the conveyor belt 23 to rotate, so as to realize the automated continuous conveying of paperboard.

[0044] One of the U-shaped plates 7 has a bidirectional lead screw 25 rotatably mounted inside, and a limit nut 26 is fitted on the bidirectional lead screw 25. The limit nut 26 is used to limit and lock the position of the lifting plate 9. The bidirectional lead screw 25 drives the two sets of lifting plates 9 to slide synchronously towards each other / backwards. The other U-shaped plate 7 has a guide rod 27 fixed inside. The lifting plates 9 have screw holes 28 and sliding holes 29 on their sides. The screw holes 28 are threaded with the bidirectional lead screw 25, and the sliding holes 29 are slidably engaged with the guide rod 27. The inner wall of the U-shaped plate 7 has a slide rail 30 fixed inside. The lifting plates 9 have grooves 31 at both ends. The grooves 31 are slidably engaged with the slide rail 30 to further improve the stability of the sliding of the cleaning part 8. Rotating the bidirectional lead screw 25 adjusts the distance between the two sets of lifting plates 9, which facilitates the replacement of the elastic cleaning cloth 13.

[0045] The lifting component consists of vertical rods 32, lifting seat 33, top plate 34, lifting motor 35, and screw 36: two vertical rods 32 are symmetrically fixed to the top of the conveyor frame 1, the lifting seat 33 is slidably sleeved on the outside of the vertical rods 32, and the top plate 34 is mounted on the top of the vertical rods 32; the lifting motor 35 is fixed to the top of the conveyor frame 1, and its output end is connected to the screw 36. The top of the screw 36 is rotatably connected to the top plate 34. The lifting seat 33 is threadedly engaged with the screw 36. The lifting motor 35 can drive the lifting seat 33 to move up and down by rotating forward and reverse.

[0046] The bottom of the lifting seat 33 is fixed with a sleeve 37, and multiple guide square tubes 38 are inserted inside the sleeve 37. One end of the guide square tube 38 is fixed with a stop block 39 and the other end is fixed with a triangular guide plate 40. A return spring 41 is installed between the stop block 39 and the sleeve 37, and the return spring 41 can provide a return force for the guide square tube 38. A support platform 42 is fixed to the outside of the U-shaped plate 7. A limiting rod 43 is erected on the support platform 42. A first conical platform 44 is fixed to the top of the limiting rod 43. A second conical platform 45 is slidably fitted on the limiting rod 43. The two conical platforms, together with the triangular guide plate 40, realize the precise alignment, guidance and step-by-step movement of the cleaning part 8.

[0047] Working principle of this embodiment two: Assembly stage: Insert the carbon fiber brush strips 4 into the guide tube 19 in sequence, splice the two sets of cleaning parts 8, so that the carbon fiber ball head 5 is inserted into the inner side of the port of the conical sleeve 10; the lifting plate 9 is attracted to the surface of the fixed plate 3 by the magnet, the elastic reset airbag 15 is compressed and compressed, the gas is filled into the hollow cavity 11, and the elastic cleaning cloth 13 completely wraps the carbon fiber brush strips 4, completing the pre-assembly of the equipment.

[0048] Brush self-cleaning process: The lifting motor 35 is started, driving the screw 36 to rotate and causing the lifting seat 33 to slide downwards along the vertical rod 32. The sleeve 37 and the triangular guide plate 40 descend synchronously. After the triangular guide plate 40 contacts the first conical platform 44, it is laterally squeezed, pushing the guide square tube 38 to slide, and the return spring 41 is compressed. When the triangular guide plate 40 disengages from the curved surface of the first conical platform 44, the return spring 41 rebounds, and the triangular guide plate 40 is precisely aligned directly below the first conical platform 44. Then the lifting motor 35 is paused.

[0049] Restart the lifting motor 35 to raise the lifting seat 33. The triangular guide plate 40 pushes the first conical platform 44 upward, thereby raising the entire cleaning component 8 synchronously. The conical sleeve 10 moves the carbon fiber ball head 5 upward. When the lifting plate 9 is disengaged from the fixed plate 3, the elastic reset airbag 15 rebounds and de-airs. The elastic cleaning cloth 13 releases the carbon fiber brush strip 4. As the carbon fiber brush strip 4 rises with the cleaning component 8, the elastic cleaning cloth 13 below continuously rubs the outer wall of the carbon fiber brush strip 4, thoroughly cleaning the accumulated dirt and impurities.

[0050] When the lower carbon fiber ball head 5 moves to the lower conical sleeve 10 port, the lifting motor 35 is paused; the lifting motor 35 is controlled to reverse, the lifting seat 33 descends, the triangular guide plate 40 disengages from the first conical platform 44, and instead contacts and guides the second conical platform 45, compressing the reset spring 41 again to complete the secondary alignment.

[0051] The lifting motor 35 rotates forward again, the lifting seat 33 rises and drives the second conical platform 45 to move upward along the limit rod 43 until the second conical platform 45 is in contact with the first conical platform 44, the triangular guide plate 40 completes the final reset, and the single carbon fiber brush strip 4 self-cleaning process ends.

[0052] Cardboard cleaning process: After the carbon fiber brush strip 4 completes self-cleaning, the servo motor 18 is started, which drives the fixed plate 3 to rotate through the rotating shaft 17, so that the carbon fiber brush strip 4 and the conveyor belt 23 form an inclined angle; the drive motor 24 is started, and the conveyor belt 23 drives the cardboard to be cleaned to be conveyed forward at a uniform speed. The cardboard passes through the area of ​​the carbon fiber brush strip 4 in sequence, and the carbon fiber brush strip 4 thoroughly cleans the surface of the cardboard to remove paper scraps, fibers and other impurities.

[0053] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0057] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic cleaning device for the surface of cardboard used in carton production, comprising a conveyor frame (1) and a cleaning unit (2) rotatably mounted on the conveyor frame (1); characterized in that: The cleaning unit (2) includes a fixing plate (3); a number of carbon fiber brush strips (4) are evenly distributed throughout the surface of the fixing plate (3); carbon fiber brush strips (4) are provided with carbon fiber ball heads (5) at both ends; The fixed plate (3) has connectors (6) symmetrically arranged on its upper and lower surfaces; the connectors (6) include two U-shaped plates (7); cleaning components (8) are slidably arranged between the two U-shaped plates (7); the cleaning components (8) include a lifting plate (9); several conical sleeves (10) are uniformly fixed through the surface of the lifting plate (9); a hollow cavity (11) is opened on the inner wall of the top of the conical sleeve (10); an elastic diaphragm (12) is arranged on the inner wall of the hollow cavity (11); an elastic cleaning cloth (13) is bonded to the elastic diaphragm (12); The bottom surface of the lifting plate (9) is provided with a storage cavity (14); the storage cavity (14) is provided with an elastic reset airbag (15); a flexible hose (16) is provided between the elastic reset airbag (15) and the hollow cavity (11); a magnet is provided on the bottom surface of the lifting plate (9); a lifting component is provided on the conveyor frame (1) for pulling up the corresponding connecting piece (6).

2. The automatic cleaning device for cardboard surface in carton production according to claim 1, characterized in that: Both ends of the fixed plate (3) are fixed with rotating shafts (17) that are rotatably connected to the conveyor frame (1); the side of the conveyor frame (1) is fixed with a servo motor (18) that is fixedly connected to the end of a rotating shaft (17); a number of guide tubes (19) that are adapted to the inner wall of the conical sleeve (10) are uniformly fixed through the surface of the fixed plate (3); baffles (20) that are slidably connected to the lifting plate (9) are symmetrically fixed on opposite sides of the fixed plate (3).

3. The automatic cleaning device for the surface of cardboard used in carton production according to claim 1, characterized in that: A connecting shaft (21) is symmetrically arranged through the inner walls of the conveyor frame (1); several pulleys (22) are evenly fixed on the circumference of the connecting shaft (21); a conveyor belt (23) is arranged between the two pulleys (22) for transmission; a drive motor (24) is fixed on the side of the conveyor frame (1) and fixedly connected to the end of a connecting shaft (21).

4. The automatic cleaning device for cardboard surface in carton production according to claim 1, characterized in that: A two-way screw rod (25) is rotatably installed between the inner walls of one U-shaped plate (7); a limit nut (26) is screwed onto the two-way screw rod (25); a guide rod (27) is fixed between the inner walls of the other U-shaped plate (7); a screw hole (28) for screwing onto the two-way screw rod (25) and a sliding hole (29) for sliding cooperation with the guide rod (27) are respectively opened on the side of the lifting plate (9); a slide rail (30) is fixed on the inner wall of the U-shaped plate (7); a slide groove (31) for sliding cooperation with the slide rail (30) is opened at both ends of the lifting plate (9).

5. The automatic cleaning device for the surface of cardboard used in carton production according to claim 1, characterized in that: The lifting component includes vertical rods (32) symmetrically fixed to the top of the conveyor frame (1); a lifting seat (33) is slidably arranged between the two vertical rods (32); a top plate (34) is fixed between the tops of the two vertical rods (32); a lifting motor (35) is fixedly installed on the top of the conveyor frame (1); a screw (36) that rotates with the top plate (34) is fixed at the output end of the lifting motor (35); the lifting seat (33) and the screw (36) are screwed together for rotation.

6. The automatic cleaning device for the surface of cardboard used in carton production according to claim 5, characterized in that: The bottom surface of the lifting seat (33) is symmetrically fixed with a sleeve (37); a number of guide square tubes (38) are evenly slidably arranged through the inner wall of the sleeve (37); a stop block (39) and a triangular guide plate (40) are fixed at both ends of the guide square tube (38); a reset spring (41) sleeved on the guide square tube (38) is connected between the stop block (39) and the sleeve (37).

7. The automatic cleaning device for the surface of cardboard used in carton production according to claim 6, characterized in that: A support platform (42) is fixed on the side of the U-shaped plate (7); a limit rod (43) is fixed on the top of the support platform (42); a first conical platform (44) is fixed on the top of the limit rod (43); a second conical platform (45) is coaxially slidably arranged on the limit rod (43).

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