Building decoration wallboard polishing device with dust removal function

Abstract

The utility model discloses a building decoration wallboard grinding device with a dust removal function. The building decoration wallboard grinding device comprises an operation table, a grinding installation frame, a grinding machine, a movable plate, a fixed cylinder, a corrugated pipe, an exhaust fan, a collecting box and a grinding auxiliary assembly. The movable plate is arranged above the operation table in a lifting mode, a grinding through hole is formed in the middle of the movable plate, and the fixed cylinder is embedded in the grinding through hole; one ends of a plurality of corrugated pipes are communicated with the fixed cylinder, the other ends of the corrugated pipes are communicated with a collecting box through an exhaust fan, and the exhaust fan and the collecting box are arranged below the operation table; the grinding auxiliary assembly is installed on the operation table, clamps the building decoration wallboard and is movably arranged below the grinding through hole. The grinding machine is installed on the operation table in a lifting mode through a grinding installation frame, and a grinding disc of the grinding machine is rotatably arranged in the fixing cylinder and makes friction contact with the surface of the building decoration wallboard. The utility model relates to the technical field of constructional engineering, and can solve the problem of serious dust raising when a grinding device grinds a building decoration wallboard in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a building decorative wallboard grinding device with a dust removal function. Background Art

[0002] The building decorative wall panel grinding device can effectively and efficiently grind the wall surface, remove uneven spots, make the wall surface smoother and brighter, ensure the quality and aesthetics of the decoration project, and the device can also reduce the labor intensity of workers and improve work efficiency, saving time and cost.

[0003] Chinese utility model patent CN112476099B discloses a mechanical polishing device for building decoration, comprising a fixed platform, a protective cover, and a bottom leg. The fixed platform is fixedly mounted on the upper surface of the bottom leg, and the top surface of the fixed platform is provided with a protective cover. While the polishing device is in operation, dust is sucked in by suction nozzles on both sides. However, due to the long distance between the suction nozzles and the polishing position, the dust emission problem is still very serious, affecting the construction environment. Therefore, it is necessary to provide a polishing device for building decorative wall panels with a dust removal function, which can solve the serious dust emission problem caused by polishing building decorative wall panels with polishing devices in the prior art. Summary of the Invention

[0004] The purpose of the utility model is to provide a building decorative wall panel grinding device with a dust removal function, which can solve the problem of serious dust generation when the grinding device in the prior art grinds the building decorative wall panels.

[0005] The utility model is achieved in this way:

[0006] A building decorative wall panel grinding device with a dust removal function comprises an operating table, a grinding mounting frame, a grinder, a movable plate, a fixed cylinder, a bellows, an exhaust fan, a collection box and a grinding auxiliary component; the movable plate is liftably arranged above the operating table, a grinding through hole is formed in the middle of the movable plate, the fixed cylinder is fixedly mounted on the operating table and embedded in the grinding through hole, and the upper end of the fixed cylinder extends upward to the top of the movable plate; one end of a plurality of bellows is connected with the interior of the fixed cylinder, and the other ends of the plurality of bellows are connected with the collection box through the exhaust fan, and the exhaust fan and the collection box are respectively mounted below the top plate of the operating table; the grinding auxiliary component is mounted on the top plate of the operating table and is located below the movable plate, the grinding auxiliary component clamps the building decorative wall panel and makes the building decorative wall panel movably arranged below the grinding through hole; the grinder is liftably mounted above the operating table through the grinding mounting frame, and the grinding disc of the grinder is rotatably arranged in the fixed cylinder and in frictional contact with the surface of the building decorative wall panel.

[0007] The grinding mounting frame includes a fixed column, a fixed plate and a hydraulic rod; several fixed columns are installed at intervals at the edge of the top plate of the operating table, and the fixed plate is fixedly installed on the top of several fixed columns so that the fixed plate is horizontally located above the top plate of the operating table; the fixed end of the hydraulic rod is fixedly installed at the center of the bottom surface of the fixed plate, and the telescopic end of the hydraulic rod extends vertically toward the grinding through hole and is fixedly connected to the grinder.

[0008] The cross-sections of the several fixed columns are all L-shaped, and electric push rods are provided on the inner sides of the several fixed columns; the fixed ends of the several electric push rods are fixedly installed on the edge of the top plate of the operating table, and the telescopic ends of the several electric push rods extend upward and are fixedly connected to the edge of the movable plate, so that the movable plate can be raised and lowered above the operating table.

[0009] The polishing auxiliary component includes a clamping drive mechanism, a sliding plate and a transport wheel; the clamping drive mechanism is arranged on the movable plate and is located next to the fixed cylinder, and a pair of sliding plates are movably arranged under the movable plate through the clamping drive mechanism, and the pair of sliding plates are located on both sides of the polishing through hole and can be clamped on both side edges of the building decorative wall panel; a plurality of transport wheels are respectively rotatably embedded on the inner side surfaces of the pair of sliding plates clamping the building decorative wall panel, so that the building decorative wall panel can be slidably arranged between the pair of sliding plates through a plurality of transport wheels, and the sliding direction of the building decorative wall panel is perpendicular to the moving direction of the pair of sliding plates.

[0010] The clamping drive mechanism includes a fixed frame, a bidirectional motor, a threaded rod and a first slider; the fixed frame is fixedly mounted on the movable plate and is located next to the fixed cylinder, the bidirectional motor is installed in the fixed frame, and a pair of threaded rods are coaxially fixed to the two output shafts of the bidirectional motor; threaded holes are formed in the pair of first sliders, so that the pair of first sliders are respectively matched and screwed on the pair of threaded rods; a pair of limiting grooves are formed on the movable plate directly below the pair of threaded rods, so that the bottoms of the pair of first sliders can respectively slide through the pair of limiting grooves and be correspondingly connected to the pair of sliding plates.

[0011] A pair of slide grooves are formed on the bottom surface of the movable plate, and the slide grooves are arranged along the moving direction of the pair of sliding plates, that is, parallel to the axial direction of the pair of threaded rods. A second slider is fixed on the pair of sliding plates so that the second slider can be slidably embedded in the slide groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model is provided with a fixed cylinder, a bellows, an exhaust fan and a collection box. The fixed cylinder with a certain height surrounds the outside of the grinding area, which can reduce the speed of dust escape to the greatest extent, thereby reducing dust pollution during the grinding process of building decorative wall panels; at the same time, the negative pressure generated by the exhaust fan in the bellows sucks the dust in the fixed cylinder into the collection box, thereby effectively avoiding the escape of dust and realizing dust-free grinding of building decorative wall panels.

[0014] 2. The utility model is provided with a grinding mounting frame and a movable plate. The grinding mounting frame is used to control the lifting of the grinding machine. The movable plate is lifted and lowered by an electric push rod. It can minimize the gap between the movable plate and the building decorative wall panel without affecting the movement of the building decorative wall panel, thereby minimizing the dust pollution during the grinding process of the building decorative wall panel. It can adapt to the grinding of building decorative wall panels of different thicknesses and meet different degrees of grinding requirements.

[0015] 3. Since the utility model is provided with a grinding auxiliary component, under the drive of a bidirectional motor, it can use threaded transmission to drive a pair of sliding plates to move close to and clamp the building decorative wall panels, thereby improving the stability of the building decorative wall panels during grinding. The output of the bidirectional motor in different directions can be used to drive the pair of sliding plates and the building decorative wall panels to move synchronously. The building decorative wall panels can also be moved relative to the pair of sliding plates via transport wheels under the action of push and pull forces to meet the grinding requirements of different positions of the building decorative wall panels, thereby improving the grinding quality and grinding efficiency of the building decorative wall panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the utility model of a building decorative wallboard grinding device with a dust removal function;

[0017] Figure 2 This is a partial structural diagram of a building decorative wallboard grinding device with a dust removal function according to the present invention;

[0018] Figure 3 This is a structural diagram of the grinding auxiliary components and the movable plate in the building decorative wall panel grinding device with dust removal function of the utility model;

[0019] Figure 4 The utility model is a structural schematic diagram of a grinding auxiliary component, a fixing cylinder and a fixing column in a building decorative wall panel grinding device with a dust removal function.

[0020] In the figure, 1. operating table; 2. fixed column; 3. electric push rod; 4. fixed plate; 5. hydraulic rod; 6. grinder; 7. movable plate; 8. fixed cylinder; 9. bellows; 10. exhaust fan; 11. collection box; 12. fixed frame; 13. bidirectional motor; 14. threaded rod; 15. first slider; 16. sliding plate; 17. transport wheel; 18. second slider; 19. slide chute. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Please see the attached Figure 1 To the attached Figure 4 A building decorative wall panel grinding device with a dust removal function includes an operating table 1, a grinding mounting frame, a grinder 6, a movable plate 7, a fixed cylinder 8, a bellows 9, an exhaust fan 10, a collection box 11 and a grinding auxiliary component; the movable plate 7 is arranged above the operating table 1 in a liftable manner, and a grinding through hole (not shown in the figure) is formed in the middle of the movable plate 7. The fixed cylinder 8 is fixedly mounted on the operating table 1 and embedded in the grinding through hole. The upper end of the fixed cylinder 8 extends upward to the top of the movable plate 7; one end of a plurality of bellows 9 is connected to the interior of the fixed cylinder 8. If The other end of the dry root corrugated pipe 9 is connected to the collection box 11 through the exhaust fan 10, and the exhaust fan 10 and the collection box 11 are respectively installed under the top plate of the operating table 1; the grinding auxiliary component is installed on the top plate of the operating table 1 and is located below the movable plate 7, and the grinding auxiliary component clamps the building decorative wall panel and makes the building decorative wall panel movably set below the grinding through hole; the grinder 6 is installed above the operating table 1 in a liftable manner through a grinding mounting frame, and the grinding disc of the grinder 6 is rotatably set in the fixed cylinder 8 and is in friction contact with the surface of the building decorative wall panel.

[0023] When a decorative wall panel is placed on the top plate of workbench 1, the panel can be translated on workbench 1 using the grinding auxiliary assembly, allowing different locations of the panel to contact the grinding disc of grinder 6, achieving the desired grinding of different locations on the panel. The grinding mounting frame can raise and lower grinder 6 to ensure that the grinding disc contacts the surface of decorative wall panels of varying thicknesses with appropriate grinding pressure, thereby ensuring high-quality grinding. The grinder 6 can be selected based on the material of the decorative wall panel being ground and the desired grinding requirements.

[0024] During the grinding process, dust generated by grinding is contained by fixed tube 8, preventing it from escaping and affecting the environment. Preferably, the inner diameter of fixed tube 8 is slightly larger than the diameter of the grinding disc, and the height of fixed tube 8 can be adaptively adjusted according to the dust situation, thereby minimizing dust escape while ensuring safe grinding operation of the grinding disc. Simultaneously, the exhaust fan 10 is activated, generating negative pressure within the bellows 9, which can be drawn from the bellows 9 into the collection box 11 along with the high-speed air flow, further effectively preventing dust escape and achieving a dust-free grinding operation.

[0025] Preferably, a certain amount of water can be stored in the collection box 11, and the end of the bellows 9 can be extended below the water surface, so that the dust mixed in the high-speed flowing air is retained in the water. A pressure relief hole is reserved at the top of the collection box 11, and the air is discharged from the collection box 11 from the pressure relief hole to ensure the pressure balance inside the collection box 11.

[0026] The movable panel 7 is designed to be adjustable, adapting to varying thicknesses of decorative wall panels. This minimizes the gap between the bottom and top of the movable panel, thereby reducing the escape of dust through this gap. The bellows 9 exhibit a certain degree of elastic deformation, adapting to changes in the height of the movable panel 7 without breaking or folding, ensuring the smooth flow of dust-laden air. The number of bellows 9 can be adjusted to meet specific needs, with two bellows 9 symmetrically arranged on either side of the fixed tube 8.

[0027] Please see the attached Figure 1 and attached Figure 2 The grinding mounting frame includes a fixed column 2, a fixed plate 4 and a hydraulic rod 5; several fixed columns 2 are installed at intervals at the edge of the top plate of the operating table 1, and the fixed plate 4 is fixedly installed on the top of several fixed columns 2 so that the fixed plate 4 is horizontally located above the top plate of the operating table 1; the fixed end of the hydraulic rod 5 is fixedly installed at the center of the bottom surface of the fixed plate 4, and the telescopic end of the hydraulic rod 5 extends vertically toward the grinding through hole and is fixedly connected to the grinder 6.

[0028] The height of the fixed column 2 can be adaptively selected according to the lifting height requirement of the grinder 6. The hydraulic rod 5 uses the pressure change of the hydraulic oil to push out or retract the piston rod at the telescopic end to achieve the lifting height adjustment of the grinder 6.

[0029] Please see the attached Figure 4 The cross-sections of the several fixed columns 2 are all L-shaped structures, and the inner sides of the several fixed columns 2 (the side facing the grinder 6 is the inner side) are provided with electric push rods 3; the fixed ends of the several electric push rods 3 are fixedly installed at the edge of the top plate of the operating table 1, and the telescopic ends of the several electric push rods 3 extend upward and are fixedly connected to the edge of the movable plate 7, so that the movable plate 7 can be raised and lowered above the operating table 1.

[0030] Preferably, the fixed column 2 can be made of angle steel, and the four angle steels are vertically connected between the top plate of the operating table 1 and the four corners of the fixed plate 4; the electric push rod 3 is installed in the L-shaped structure of the angle steel, and a hidden installation is adopted. The four electric push rods 3 are respectively connected to the four corners of the movable plate 7. The four corners of the movable plate 7 slide against the inner wall of the L-shaped structure of the angle steel, which can make the lifting and lowering control of the movable plate 7 more stable and smooth.

[0031] Please see the attached Figure 3 and attached Figure 4The polishing auxiliary assembly includes a clamping drive mechanism, a sliding plate 16 and a transport wheel 17; the clamping drive mechanism is arranged on the movable plate 7 and is located next to the fixed cylinder 8, and a pair of sliding plates 16 are movably arranged below the movable plate 7 through the clamping drive mechanism. The pair of sliding plates 16 are located on both sides of the polishing through hole and can be clamped at the two side edges of the building decorative wallboard; a number of transport wheels 17 are respectively rotatably embedded in the inner side surfaces of the pair of sliding plates 16 clamping the building decorative wallboard through wheel axles, so that the building decorative wallboard can be slidably arranged between the pair of sliding plates 16 through a number of transport wheels 17, and the sliding direction of the building decorative wallboard is perpendicular to the moving direction of the pair of sliding plates 16.

[0032] The clamping drive mechanism is used to provide power for the movement of the pair of sliding plates 16, causing the pair of sliding plates 16 to move closer together, thereby clamping the decorative wallboard at the edges of the building, and driving the decorative wallboard to move synchronously. Preferably, the pair of sliding plates 16 are elongated to increase the clamping contact area with the decorative wallboard, ensuring the pair of sliding plates 16's clamping stability and synchronous movement of the decorative wallboard.

[0033] The plurality of transport wheels 17 convert sliding friction into rolling friction, enabling the decorative wallboard to move relative to the pair of sliding plates 16 along their lengths. This allows for both lateral and longitudinal movement of the decorative wallboard relative to the polishing disc, ensuring that the polishing disc fully polishes the entire surface of the decorative wallboard. The number and spacing of the transport wheels 17 can be adjusted to suit actual usage requirements to ensure stable movement of the decorative wallboard.

[0034] Please see the attached Figure 3 The clamping drive mechanism includes a fixed frame 12, a bidirectional motor 13, a threaded rod 14 and a first slider 15; the fixed frame 12 is fixedly mounted on the movable plate 7 and is located next to the fixed cylinder 8, the bidirectional motor 13 is installed in the fixed frame 12, and a pair of threaded rods 14 are coaxially fixedly connected to the two output shafts of the bidirectional motor 13; threaded holes are formed in the pair of first sliders 15, so that the pair of first sliders 15 are respectively matched and screwed on the pair of threaded rods 14; a pair of limiting grooves (not shown in the figure) are formed on the movable plate 7 directly below the pair of threaded rods 14, so that the bottoms of the pair of first sliders 15 can respectively slide through the pair of limiting grooves and be correspondingly connected to the pair of sliding plates 16.

[0035] Preferably, the bidirectional motor 13 can adopt the bidirectional output motor of the existing technology, which has two output shafts. The two output shafts can be driven individually or synchronously, and the rotation directions of the two output shafts can be the same or opposite, thereby satisfying the movement control of a pair of first sliders 15.

[0036] When the bidirectional motor 13 is activated, its two output shafts drive the pair of threaded rods 14 to rotate synchronously in the forward direction. Driven by the threads, the pair of first sliders 15 move toward each other along a pair of limiting grooves. The sliding plates 16 move synchronously with the first sliders 15, thereby clamping the decorative wallboard. Similarly, when the two output shafts drive the pair of threaded rods 14 to rotate synchronously in the reverse direction, the decorative wallboard can be released.

[0037] When the bidirectional motor 13 is activated, its two output shafts drive the pair of threaded rods 14 to rotate synchronously in different directions. Driven by the threads, the pair of first sliders 15 move synchronously in the same direction along a pair of limiting grooves. The sliding plate 16 moves synchronously with the first sliders 15, thereby enabling the pair of sliding plates 16 to drive unidirectional movement of the building decorative wall panels. By using the two output shafts to drive the pair of threaded rods 14 to change their rotational direction, the pair of sliding plates 16 can drive bidirectional movement of the building decorative wall panels.

[0038] Please see the attached Figure 4 A pair of slide grooves 19 are formed on the bottom surface of the movable plate 7. The slide grooves 19 are arranged along the moving direction of the pair of sliding plates 16, that is, parallel to the axial direction of the pair of threaded rods 14. A second slider 18 is fixed on the pair of sliding plates 16, so that the second slider 18 can be slidably embedded in the slide grooves 19.

[0039] One end of the sliding plate 16 is limited by the first slider 15 and the limiting slide groove, and the other end of the sliding plate 16 is limited by the second slider 18 and the slide groove 19, which ensures the stability, linearity and controllability of the movement of the sliding plate 16, thereby ensuring that a pair of sliding plates 16 can clamp and control the movement of the building decorative wall panels.

[0040] Please see the attached Figure 1 To the attached Figure 4 The working process and working principle of the utility model when grinding building decorative wall panels are as follows:

[0041] The construction worker places the building decorative wall panel on the operating table 1 and between a pair of sliding plates 16, starts the electric push rod 3, causes the telescopic end of the electric push rod 3 to descend and drives the movable plate 7 to descend to the top of the building decorative wall panel, and minimizes the gap between the movable plate 7 and the building decorative wall panel to the greatest extent without affecting the movement of the building decorative wall panel, thereby reducing the escape of dust.

[0042] The bidirectional motor 13 is activated, driving the pair of threaded rods 14 to rotate within the fixed frame 12. Because the first slider 15 is restrained by the limiting grooves and cannot rotate, the rotational motion of the pair of threaded rods 14 is converted into linear motion of the pair of first sliders 15 along the pair of limiting grooves through threaded transmission, thereby driving the synchronous movement of the pair of sliding plates 16. The pair of sliding plates 16 slide along the pair of grooves 19 via the pair of second sliders 18, bringing the pair of sliding plates 16 closer together and clamping them at the edges of the decorative wallboard, improving the stability and controllability of the movement of the decorative wallboard.

[0043] The hydraulic rod 5 is activated, and the telescopic end of the hydraulic rod 5 is extended downward, and the grinder 6 is lowered, so that the grinding disc of the grinder 6 is inserted into the fixed cylinder 8 and contacts the surface of the building decorative wallboard with a certain pressure. When the grinder 6 is turned on, the surface of the building decorative wallboard can be polished by the grinding disc.

[0044] During the grinding process, the exhaust fan 10 is turned on, and the exhaust fan 10 forms a negative pressure in the bellows 9, sucking the dust in the fixed cylinder 8 into the collection box 11, thereby achieving the purpose of synchronous dust removal during grinding.

[0045] At the same time, during the process of polishing the building decorative wall panels, the construction workers can push the building decorative wall panels and use several transport wheels 17 to reduce friction, so that the building decorative wall panels can move relative to the pair of sliding plates 16 along the length direction parallel to the sliding plates 16. At the same time, the building decorative wall panels can also be driven by the bidirectional motor 13 through the threaded rod 14, a pair of first sliders 15 and a pair of sliding plates 16 to move along the length direction perpendicular to the sliding plates 16, so that the polishing position of the polishing disc on the surface of the building decorative wall panels can be continuously changed according to the polishing requirements.

[0046] After finishing the grinding of the entire surface of the building decorative wallboard, the bidirectional motor 13 and the grinder 6 are turned off, the telescopic ends of the hydraulic rod 5 and the electric push rod 3 are raised, and the building decorative wallboard is pulled out.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A building decorative wall panel grinding device with dust removal function, characterized by: The invention comprises an operating table (1), a grinding mounting frame, a grinding machine (6), a movable plate (7), a fixed cylinder (8), a bellows (9), an exhaust fan (10), a collecting box (11) and a grinding auxiliary component; the movable plate (7) is arranged above the operating table (1) in a liftable manner, a grinding through hole is formed in the middle of the movable plate (7), the fixed cylinder (8) is fixedly mounted on the operating table (1) and embedded in the grinding through hole, and the upper end of the fixed cylinder (8) extends upward to the upper part of the movable plate (7); one end of a plurality of bellows (9) is communicated with the interior of the fixed cylinder (8), and the other end of the plurality of bellows (9) is connected to the interior of the fixed cylinder (8). One end is connected to a collection box (11) through an exhaust fan (10), and the exhaust fan (10) and the collection box (11) are respectively installed below the top plate of the operating table (1); the grinding auxiliary component is installed on the top plate of the operating table (1) and is located below the movable plate (7), and the grinding auxiliary component clamps the building decorative wall panel and enables the building decorative wall panel to be movably arranged below the grinding through hole; the grinding machine (6) is installed above the operating table (1) in a liftable manner through a grinding mounting frame, and the grinding disc of the grinding machine (6) is rotatably arranged in a fixed cylinder (8) and is in friction contact with the surface of the building decorative wall panel.

2. The building decorative wallboard polishing device with dust removal function according to claim 1 is characterized in that: The grinding mounting frame comprises a fixed column (2), a fixed plate (4) and a hydraulic rod (5); a plurality of fixed columns (2) are respectively installed at intervals on the edge of the top plate of the operating table (1); the fixed plate (4) is fixedly installed on the top of the plurality of fixed columns (2), so that the fixed plate (4) is horizontally located above the top plate of the operating table (1); the fixed end of the hydraulic rod (5) is fixedly installed at the center of the bottom surface of the fixed plate (4), and the telescopic end of the hydraulic rod (5) extends vertically toward the grinding through hole and is fixedly connected to the grinder (6).

3. The building decorative wallboard polishing device with dust removal function according to claim 2 is characterized in that: The cross-sections of the plurality of fixed columns (2) are all L-shaped structures, and the inner sides of the plurality of fixed columns (2) are all provided with electric push rods (3); the fixed ends of the plurality of electric push rods (3) are all fixedly installed at the edge of the top plate of the operating table (1), and the telescopic ends of the plurality of electric push rods (3) extend upward and are fixedly connected to the edge of the movable plate (7), so that the movable plate (7) can be arranged above the operating table (1) in a liftable manner.

4. The building decorative wallboard polishing device with dust removal function according to claim 1 is characterized in that: The polishing auxiliary component includes a clamping drive mechanism, a sliding plate (16) and a transport wheel (17); the clamping drive mechanism is arranged on the movable plate (7) and is located beside the fixed cylinder (8); a pair of sliding plates (16) are movably arranged below the movable plate (7) through the clamping drive mechanism, and the pair of sliding plates (16) are located on both sides of the polishing through hole and can be clamped at the two side edges of the building decorative wall panel; a plurality of transport wheels (17) are respectively rotatably embedded on the inner side surfaces of the pair of sliding plates (16) clamping the building decorative wall panel, so that the building decorative wall panel can be slidably arranged between the pair of sliding plates (16) through the plurality of transport wheels (17), and the sliding direction of the building decorative wall panel is perpendicular to the moving direction of the pair of sliding plates (16).

5. The building decorative wallboard polishing device with dust removal function according to claim 4 is characterized in that: The clamping drive mechanism includes a fixed frame (12), a bidirectional motor (13), a threaded rod (14) and a first slider (15); the fixed frame (12) is fixedly mounted on the movable plate (7) and is located beside the fixed cylinder (8); the bidirectional motor (13) is mounted in the fixed frame (12), and a pair of threaded rods (14) are respectively coaxially fixedly connected to the two output shafts of the bidirectional motor (13); threaded holes are formed in the pair of first sliders (15), so that the pair of first sliders (15) are respectively matched and screwed on the pair of threaded rods (14); a pair of limiting grooves are formed on the movable plate (7) directly below the pair of threaded rods (14), so that the bottoms of the pair of first sliders (15) can slide through the pair of limiting grooves and be correspondingly connected to the pair of sliding plates (16).

6. The building decorative wallboard polishing device with dust removal function according to claim 5 is characterized in that: A pair of slide grooves (19) are formed on the bottom surface of the movable plate (7), and the slide grooves (19) are arranged along the moving direction of the pair of sliding plates (16), that is, parallel to the axial direction of the pair of threaded rods (14). The pair of sliding plates (16) are fixed with a second slider (18) so that the second slider (18) can be slidably embedded in the slide grooves (19).

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