PVC plate surface finishing equipment

Abstract

The application relates to the technical field of PVC plate surface processing, and discloses PVC plate surface finishing equipment, which comprises a polishing main body, a polishing shaft and a polishing head used in cooperation with the polishing main body, a telescopic part is arranged at the top of the polishing main body, a supporting plate is arranged at the side of the polishing main body, a dust collecting assembly is arranged at the lower end of the supporting plate, the dust collecting assembly comprises a through-arranged centrifugal circulation collecting cover and a cleaning cavity, the polishing shaft is movably penetrated into the centrifugal circulation collecting cover, is used for multi-process processing of the polishing head in the centrifugal circulation collecting cover, and is used for collecting and cleaning dust, the supporting plate comprises a horizontal plate which is vertically connected with the polishing main body and a vertical plate which is vertically connected with the dust collecting assembly, and the horizontal plate is vertically and slidably connected with the vertical plate; the surface finishing equipment can collect and treat dust, multi-process process plate materials, and improve overall processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of PVC board surface processing technology, specifically to a PVC board surface finishing equipment. Background Technology

[0002] PVC sheets are sheet products made from polyvinyl chloride resin (PVC) as the main base material, with the addition of heat stabilizers, lubricants, fillers, and other auxiliary materials, through extrusion or calendering processes. Based on differences in structure and performance, they are mainly divided into two categories: solid rigid PVC sheets and foamed PVC sheets. Solid sheets have high density and good mechanical strength, suitable for applications requiring durability and load-bearing capacity; foamed sheets, on the other hand, are lightweight, easy to process, and offer sound and heat insulation, making them widely used in decoration, advertising displays, model making, and other fields.

[0003] In the production of PVC sheets, surface polishing is often performed to enhance their aesthetics. Clamping and static electricity discharge functions are integrated into a single side clamping rod assembly. The physical contact between the side clamping rod and the PVC sheet simultaneously achieves clamping, positioning, and static electricity conduction. This static electricity conduction mitigates the problem of static electricity generated during PVC sheet processing, which attracts dust and affects surface quality. However, existing devices still have issues with dust handling. For example, CN121245665A, entitled "A PVC Sheet Surface Finishing Equipment," only uses a clamping rod assembly and its sliding contact rod and spring to contact the PVC sheet surface to eliminate static electricity. This method only addresses clamping and static electricity discharge, failing to address the core processes of PVC sheet surface finishing and lacking dust collection and treatment, making it unsuitable for subsequent surface processing of PVC sheets. Therefore, it is necessary to design a PVC sheet surface finishing equipment capable of collecting and treating dust and performing multi-stage processing on the sheet. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a PVC board surface finishing equipment with the advantages of processing dust removal function and multi-process processing of boards, thus solving the problem of dust retention on the board surface.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A PVC board surface finishing equipment includes a grinding body, a grinding shaft and a grinding head used in conjunction with the grinding body. The top of the grinding body is provided with a telescopic component, and a support plate is provided on the side of the grinding body. A dust collection assembly is provided at the lower end of the support plate. The dust collection assembly includes a centrifugal circulation collection hood and a cleaning chamber that are arranged through it. The grinding shaft is movably connected to the centrifugal circulation collection hood. It is used for multi-process processing of the grinding head in the centrifugal circulation collection hood, as well as for the collection and cleaning of equipment dust.

[0006] Preferably, the support plate includes a horizontal plate vertically connected to the grinding body and a vertical plate vertically connected to the dust collection assembly. The horizontal plate slides vertically onto the vertical plate to support the positions of the grinding body and the dust collection assembly.

[0007] Preferably, the centrifugal circulation collection hood and the cleaning chamber are internally equipped with the same dust-adhesive belt, the cleaning chamber is equipped with a rotating roller, and the dust-adhesive belt is sleeved on the outside of the rotating roller. The cleaning chamber is equipped with a cleaning scraper for cleaning the surface of the dust-adhesive belt, which is used for centrifugal collection and circulation cleaning of dust in the dust collection assembly.

[0008] Preferably, a motor is provided at one end of the rotating roller, a water outlet cover is provided at the top of the rotating roller, a water supply component for supplying water to the water outlet cover is provided at the top of the cleaning chamber, and a suction push component is provided on the water supply component for rotating cleaning of the surface of the dusty belt.

[0009] Preferably, the inner side of the centrifugal circulation collection hood is rotatably provided with two rows of rollers, and the ash-adhesive belt is limited between the two rows of rollers. Each row of rollers includes several positioning rollers, and the ash-adhesive belt is rotated and used by the several positioning rollers for the recycling of the ash-adhesive belt.

[0010] Preferably, the outer surface of the dust-adhesive belt is covered with a magnetic layer, and the cleaning chamber has two through-holes on the side near the centrifugal circulation collection hood for the dust-adhesive belt to pass through. The lower end of the cleaning chamber is detachably equipped with a collection hopper, and a drainage end is provided on one side of the collection hopper, which can realize solid-liquid separation and facilitate the classified collection and treatment of dust and sewage.

[0011] Preferably, the dust collection assembly is fitted with an overflow prevention collection pipe on its outer side, and a spiral pipe is provided through the outer side of the overflow prevention collection pipe. An exhaust fan is provided at the end of the spiral pipe for collecting overflowing dust.

[0012] Preferably, a bearing slide is provided at the top center of the centrifugal circulation collection hood, and a positioning block is provided on the outer side of the grinding shaft. The positioning block is connected to the bearing slide for limiting and passing through, and is used for the rotation and sliding of the grinding shaft in the centrifugal circulation collection hood.

[0013] Preferably, a replacement assembly is provided between the grinding head and the grinding shaft. The replacement assembly includes a fitting seat fixed on the grinding shaft and the grinding head. The end of the fitting seat is provided with a plurality of locking teeth in a ring. A through-hole locking seat is provided through the middle of two fitting seats. The same screw-fit seat is sleeved on the outside of the two fitting seats for quick replacement of grinding heads of different specifications.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a PVC board surface finishing equipment, which has the following beneficial effects: 1. This PVC board surface finishing equipment uses the centrifugal circulation collection hood and cleaning chamber in the dust collection component to collect and clean the centrifugally collected dust in a cyclical manner. At the same time, it uses negative pressure air extraction through the anti-overflow collection pipe to collect dust, effectively preventing dust from adhering to the PVC board surface and affecting the processing quality. It also prevents dust from spreading and polluting the working environment, thus balancing environmental protection and processing stability. 2. This PVC board surface finishing equipment, through the cooperation of support plate, telescopic parts and dust collection components, realizes flexible adjustment of grinding head height, effectively adapts to the processing needs of PVC boards of different thicknesses, and fully processes the PVC boards. At the same time, through the limiting cooperation of bearing slide and positioning block, it reduces the shaking and friction when the grinding shaft rotates, ensures the smooth grinding process, improves the surface finishing accuracy of PVC boards, and reduces processing errors. 3. This PVC board surface finishing equipment allows for easy and quick replacement of grinding heads of different specifications through the setting of interchangeable components, enabling fine processing of PVC boards of different specifications. It simplifies operation steps, saves replacement time, allows for continuous processing of multiple processes, expands the scope of application, and significantly improves overall processing efficiency and flexibility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the grinding body, telescopic component, support plate, and dust collection assembly in this invention.

[0017] Figure 3 This is a schematic diagram of the dust collection component and the exhaust fan in this invention.

[0018] Figure 4 This is an exploded view of the internal structure of the dust collection component in this invention.

[0019] Figure 5 This is a schematic diagram of the dust collection component in the present invention.

[0020] Figure 6 This is an exploded view of the internal structure of the cleaning cavity in this invention.

[0021] Figure 7 This is a cross-sectional view of the structure of the grinding shaft and the centrifugal circulation collection cover in this invention.

[0022] Figure 8 This is an exploded view of the structure of the grinding shaft and grinding head in this invention.

[0023] In the diagram: 1. Grinding body; 2. Grinding shaft; 3. Grinding head; 4. Dust collection assembly; 5. Centrifugal circulation collection hood; 6. Cleaning chamber; 7. Rotating roller; 8. Dust-adhesive belt; 9. Dust-cleaning scraper; 10. Water outlet hood; 11. Water delivery component; 12. Suction pusher component; 13. Collection hopper; 14. Positioning roller; 15. Magnetic suction layer; 16. Through-entry point; 17. Overflow prevention collection pipe; 18. Exhaust fan; 19. Replacement component; 20. Telescopic component; 21. Support plate; 22. Bearing slide; 23. Positioning block; 24. Fitting seat; 25. Clamping tooth; 26. Through-clamping seat; 27. Rotary joint seat. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] This embodiment provides a PVC board surface finishing equipment, which has the following technical features.

[0029] Please see Figure 1-8 Currently, when processing PVC surfaces, a grinding body 1 drives the grinding shaft 2 and grinding head 3 to rotate, polishing the surface of the PVC sheet below. The grinding work is performed by moving the grinding body 1 through the processing equipment. To facilitate multi-stage processing of the sheet surface and to collect dust during processing, the finishing equipment can have a telescopic component 20 (electric actuator, cylinder, or other linear telescopic device) installed on the top of the grinding body 1. A support plate 21 is installed on the side of the grinding body 1. This support plate 21 consists of a horizontal plate and a vertical plate. A dust collection component 4 is installed at the lower end of the support plate 21. This dust collection component 4 includes a through-type... The centrifugal circulation collection hood 5 and the cleaning chamber 6 are set up. When the grinding body 1 is set up, the support plate 21 will vertically connect the horizontal plate to the grinding body 1 and the vertical plate to the dust collection component 4. At the same time, the horizontal plate slides vertically on the vertical plate. The grinding shaft 2 of the grinding body 1 and the centrifugal circulation collection hood 5 are connected through each other. The height of the grinding body 1 can be adjusted by the extension and retraction of the telescopic component 20, so that the grinding shaft 2 can slide up and down in the centrifugal circulation collection hood 5. The height of the grinding head 3 can be adjusted in the centrifugal circulation collection hood 5, and it can extend out of the hood to perform multi-process processing on the PVC board below. The dust collection component 4 collects and cleans the dust during the equipment processing.

[0030] The equipment, through the above-mentioned settings, solves the problem that existing PVC board surface finishing equipment can only achieve clamping and static electricity discharge, without involving dust collection and treatment, and cannot perform multi-process processing. It can meet the aesthetic processing requirements of PVC board surface polishing. During the use of the processing equipment, the PVC board to be processed is placed in the designated processing position. After the grinding body 1 is started, the telescopic component 20 can drive the grinding shaft 2 and the grinding head 3 to adjust their up and down positions, so that the grinding head 3 can be adapted to the processing height of the PVC board and the processing requirements of PVC boards of different thicknesses. The grinding shaft 2 drives the grinding head 3 to rotate, and performs multi-process fine processing on the surface of the PVC board. The dust generated during the grinding process will be concentrated in the centrifugal circulation collection hood 5. The centrifugal circulation collection hood 5 is connected to the cleaning chamber 6, which can initially collect the dust generated during grinding. At the same time, the cleaning chamber 6 can further clean the collected dust, so as to avoid the dust adhering to the surface of the PVC board and affecting the processing quality. It also reduces the pollution of the working environment caused by dust diffusion, improves the practicality and environmental protection of the equipment. The support plate 21 provides stable support for the grinding body 1 and the dust collection component 4, ensuring that the grinding and dust collection processes are carried out stably.

[0031] In order to collect and transfer dust during equipment processing and facilitate continuous processing, a rotating roller 7 can be rotatably installed in the cleaning chamber 6. The same dust-adhesive belt 8 is rotatably installed inside the centrifugal circulation collection hood 5 and the cleaning chamber 6. The dust-adhesive belt 8 is then sleeved on the outside of the rotating roller 7. Next, a dust-removing scraper 9 that is in contact with the surface of the dust-adhesive belt 8 is installed in the cleaning chamber 6. When the dust collection component 4 is in use, the dust generated during the grinding process is thrown towards the surface of the dust-adhesive belt 8 by centrifugal force in the centrifugal circulation collection hood 5. Driven by the motor at the end of the rotating roller 7, the dust-adhesive belt 8 can be rotated in a cycle. The dust-adhesive belt 8 carries the dust from the centrifugal circulation collection hood 5 to the cleaning chamber 6. The cleaning scraper 9 set in the cleaning chamber 6 is in close contact with the surface of the dust-adhesive belt 8. When the dust-adhesive belt 8 passes the cleaning scraper 9, the cleaning scraper 9 can scrape off the dust attached to the surface of the dust-adhesive belt 8. The dust falls into the cleaning chamber 6 by gravity, realizing the centrifugal collection and circulation cleaning of dust, ensuring that the dust-adhesive belt 8 always maintains a good dust-adhesive effect and continuously collects dust. Through the cooperation of the dust-collecting belt 8, the rotating roller 7, and the dust-cleaning scraper 9, the centrifugal collection and cyclic cleaning of dust in the dust collection assembly 4 are realized. The dust-collecting belt 8 can fully collect the dust in the centrifugal circulation collection hood 5. The rotating roller 7 drives the dust-collecting belt 8 to rotate cyclically, which facilitates the continuous operation of the dust-collecting belt 8 and cleans the dust on the surface of the dust-collecting belt 8 in a timely manner, reducing dust residue, ensuring processing quality, reducing manual intervention in dust cleaning, and improving the automation level of the equipment.

[0032] Furthermore, a water outlet cover 10 can be installed on the top of the rotating roller 7. A water supply component 11 is used to supply water to the water outlet cover 10 from the top of the cleaning chamber 6. The water supply component 11 includes a water storage tank and a suction pusher 12 (the suction pusher 12 includes an electric push rod installed in the water storage tank and a piston slidably installed inside the water storage tank. The electric push rod is connected to the piston. By pushing the piston with the electric push rod, the water supply component 11 can continuously supply water to the water outlet cover 10. Water can also be added to the tank from the outside at regular intervals). The water outlet cover 10 sprays water evenly on the surface of the dust-adhesive belt 8 to wet and wash the dust adhering to the surface of the dust-adhesive belt 8, preventing the accumulation of sewage and dust mixture in the cleaning chamber 6, preventing bacterial growth and equipment damage, while maintaining the cleanliness of the dust-adhesive belt 8, ensuring that it always has good dust-adhesive performance, and further improving the dust collection effect and the service life of the equipment.

[0033] When setting the position of the dust-collecting belt 8, in order to facilitate the rotation of the dust-collecting belt 8 in the centrifugal collection hood 5, two rows of rollers need to be rotated inside the centrifugal circulation collection hood 5. Each row of rollers contains several positioning rollers 14. The dust-collecting belt 8 is limited between the two rows of positioning rollers 14. When the rotating roller 7 drives the dust-collecting belt 8 to rotate, the positioning rollers 14 can limit and guide the dust-collecting belt 8, so that the dust-collecting belt 8 always maintains a stable rotation trajectory, avoiding the dust-collecting belt 8 from deviating, wrinkling or loosening during rotation, ensuring that the dust-collecting belt 8 is in close contact with the inner wall of the centrifugal circulation collection hood 5, and fully contacting the dust generated by grinding. The rotation setting of the positioning rollers 14 can also reduce the friction of the dust-collecting belt 8 during rotation, reduce the wear of the dust-collecting belt 8, and extend its service life.

[0034] Furthermore, a magnetic layer 15 can be applied to the outer surface of the dust-collecting belt 8 to adsorb the metal dust generated during the grinding process, thereby improving the comprehensiveness of dust collection. Then, two through-holes 16 are opened on the side of the cleaning chamber 6 near the centrifugal circulation collection hood 5 to allow the dust-collecting belt 8 to pass smoothly through the cleaning chamber 6, ensuring that the dust-collecting belt 8 rotates smoothly between the centrifugal circulation collection hood 5 and the cleaning chamber 6. A collection hopper 13 can be detachably installed at the lower end of the cleaning chamber 6 to collect the dust and wastewater separated by scraping. At the same time, a drain end can be set on one side of the collection hopper 13 to facilitate the discharge of wastewater, thereby achieving the separation of dust and wastewater and facilitating the classified collection and treatment of dust.

[0035] While the dust is collected by centrifugation, an overflow prevention collection pipe 17 can also be installed on the outside of the dust collection component 4. A spiral pipe is installed through the outside of the overflow prevention collection pipe 17, and an exhaust fan 18 is installed at the end of the spiral pipe. A filter box can be installed at the air inlet of the exhaust fan 18 to intercept dust. After the exhaust fan 18 is started, a negative pressure is generated, and the dust intercepted in the overflow prevention collection pipe 17 is sucked through the spiral pipe to the designated collection device, effectively intercepting the dust that overflows from the gaps of the dust collection component 4 and preventing the dust from spreading to the working environment.

[0036] When the grinding shaft 2 is connected to the centrifugal circulation collection hood 5, a bearing slide 22 can be installed in the middle of the top of the centrifugal circulation collection hood 5, and a positioning block 23 can be installed on the outside of the grinding shaft 2. The positioning block 23 and the bearing slide 22 are mutually limiting and connected, which facilitates the rotation and sliding of the grinding shaft 2 in the centrifugal circulation collection hood 5. When the grinding shaft 2 drives the grinding head 3 to rotate for processing, the bearing slide 22 can reduce the friction force when the grinding shaft 2 rotates, ensuring the smoothness of the rotation of the grinding shaft 2. At the same time, the limiting cooperation between the positioning block 23 and the bearing slide 22 can limit the radial sway of the grinding shaft 2. When the telescopic component 20 drives the grinding shaft 2 to slide up and down to adjust the height, the positioning block 23 can slide up and down along the bearing slide 22 to ensure the smoothness of the sliding process of the grinding shaft 2 and avoid the grinding shaft 2 from shifting, which would cause the grinding head 3 to deviate from the contact with the PVC board and affect the processing accuracy.

[0037] To facilitate multi-process machining on sheet metal, a replacement assembly 19 can be installed between the grinding head 3 and the grinding shaft 2. The replacement assembly 19, through the cooperation of a fitting seat 24, locking teeth 25, a through-hole locking seat 26, and a screw-on seat 27, enables rapid replacement of grinding heads 3 of different specifications without the need for special tools. This convenient operation saves time on grinding head 3 replacement and improves processing efficiency. The fitting seat 24 is fixed to the grinding shaft 2 and the grinding head 3. Several locking teeth 25 are arranged in a ring at the ends of the fitting seat 24. A through-hole locking seat 26 is installed through the middle of two fitting seats 24 for limiting and locking. The same screw-on seat 27 is fitted onto the outside of the two fitting seats 24 and screwed tightly for quick replacement of grinding heads 3 of different specifications. When it is necessary to change to a different specification of grinding head 3, rotate the screw-fit seat 27 to separate the screw-fit seat 27 from the two fitting seats 24, then move the grinding head 3 away, pull out the through-hold seat 26, and separate the grinding head 3 from the fitting seats 24 on the grinding shaft 2. Replace with a new specification of grinding head 3, align the locking teeth 25 of the two fitting seats 24, insert the through-hold seat 26 for positioning, and then rotate the screw-fit seat 27 to lock and fix the two fitting seats 24. This allows for quick replacement of grinding heads 3 of different specifications, saving time. The locking teeth 25 on the fitting seats 24 can increase the firmness of the connection between the grinding head 3 and the grinding shaft 2, preventing the grinding head 3 from loosening or shifting during grinding. The through-hold seat 26 further enhances the stability of the connection. The locking function of the screw-fit seat 27 is used to prevent the connection from loosening, ensuring the stability and accuracy of the processing process, while expanding the applicability of the equipment to process the surface of the board with different precision.

[0038] Working principle: This equipment achieves multi-stage precision processing and efficient dust removal on the surface of PVC boards through the coordinated operation of a grinding mechanism, a dust collection and cleaning mechanism, and a quick tool change mechanism.

[0039] While the grinding body 1 performs grinding work by driving the grinding shaft 2 and the grinding head 3 to rotate, the telescopic component 20 can be used to drive the grinding body 1 to rise and fall. With the limiting effect of the bearing slide 22 and the positioning block 23, the height of the grinding head 3 can be adjusted to adapt to plates of different thicknesses. Alternatively, the replacement component 19 can be used to replace the grinding head 3 of different specifications to complete multiple processing steps.

[0040] Dust generated during the grinding process is quickly cleaned and collected through a combination of centrifugal circulation and negative pressure adsorption. The dust is adsorbed onto the dust-adhesive belt 8 by centrifugal force in the centrifugal circulation collection hood. The rotating roller 7 drives the dust-adhesive belt 8 to circulate and transport the dust to the cleaning chamber 6. The dust removal scraper 9 scrapes the dust to the collection hopper 13. The water outlet hood 10 sprays water to rinse the dust-adhesive belt 8 to ensure the dust-adhesive effect. At the same time, the magnetic layer 15 on the inner side of the dust-adhesive belt 8 adsorbs metal dust. The overflow collection pipe 17, together with the exhaust fan 18, uses negative pressure suction to intercept dust overflowing from the equipment gaps, avoids pollution, and improves the collection effect.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface finishing equipment for PVC boards, comprising a grinding body (1) and a grinding shaft (2) and a grinding head (3) used in conjunction with the grinding body (1), characterized in that: The top of the grinding body (1) is provided with a telescopic component (20), the side of the grinding body (1) is provided with a support plate (21), and the lower end of the support plate (21) is provided with a dust collection component (4). The dust collection assembly (4) includes a centrifugal circulation collection hood (5) and a cleaning chamber (6) that are arranged in a through manner, and the grinding shaft (2) is movably connected to the centrifugal circulation collection hood (5) for the grinding head (3) to perform multi-process processing in the centrifugal circulation collection hood (5), as well as for the collection and cleaning of equipment dust.

2. The PVC board surface finishing equipment according to claim 1, characterized in that, The support plate (21) includes a horizontal plate that is vertically connected to the grinding body (1) and a vertical plate that is vertically connected to the dust collection assembly (4). The horizontal plate slides vertically on the vertical plate to support the position of the grinding body (1) and the dust collection assembly (4).

3. The PVC board surface finishing equipment according to claim 1, characterized in that, The centrifugal circulation collection hood (5) and the cleaning chamber (6) are equipped with the same dust-adhesive belt (8) for rotation. A rotating roller (7) is rotatably arranged in the cleaning chamber (6), and the dust-adhesive belt (8) is sleeved on the outside of the rotating roller (7). A dust-cleaning scraper (9) for cleaning the surface of the dust-adhesive belt (8) is provided in the cleaning chamber (6) for centrifugal collection and circulation cleaning of dust in the dust collection assembly (4).

4. The PVC board surface finishing equipment according to claim 3, characterized in that, One end of the rotating roller (7) is equipped with a motor, and the top of the rotating roller (7) is equipped with a water outlet cover (10). The top of the cleaning chamber (6) is equipped with a water supply component (11) for supplying water to the water outlet cover (10). The water supply component (11) is equipped with a suction push component (12) for rotating cleaning of the surface of the dust-adhesive belt (8).

5. The PVC board surface finishing equipment according to claim 4, characterized in that, The centrifugal circulation collection cover (5) has two rows of rollers rotatably arranged on its inner side, and the ash-adhesive belt (8) is limited between the two rows of rollers. Each row of rollers includes several positioning rollers (14). The ash-adhesive belt (8) is rotated and used by several positioning rollers (14) for the recycling of the ash-adhesive belt (8).

6. The PVC board surface finishing equipment according to claim 5, characterized in that, The outer surface of the dust-adhesive strip (8) is covered with a magnetic layer (15). The cleaning chamber (6) has two inlets (16) on the side near the centrifugal circulation collection hood (5) for the dust-adhesive strip (8) to pass through. The lower end of the cleaning chamber (6) is detachably equipped with a collection hopper (13). A drainage end is provided on one side of the collection hopper (13), which can realize solid-liquid separation and facilitate the classification, collection and treatment of dust and sewage.

7. The PVC board surface finishing equipment according to claim 1, characterized in that, The dust collection assembly (4) is fitted with an overflow prevention collection pipe (17) on its outer side. A spiral pipe is provided through the outer side of the overflow prevention collection pipe (17). A fan (18) is provided at the end of the spiral pipe for collecting overflowing dust.

8. The PVC board surface finishing equipment according to claim 1, characterized in that, A bearing slide (22) is provided at the top center of the centrifugal circulation collection hood (5), and a positioning block (23) is provided on the outside of the grinding shaft (2). The positioning block (23) is connected to the bearing slide (22) for limiting and passing through, and is used for the rotation and sliding of the grinding shaft (2) in the centrifugal circulation collection hood (5).

9. The PVC board surface finishing equipment according to claim 1, characterized in that, A replacement assembly (19) is provided between the grinding head (3) and the grinding shaft (2). The replacement assembly (19) includes a fitting seat (24) fixed on the grinding shaft (2) and the grinding head (3). The end of the fitting seat (24) is provided with a number of locking teeth (25) in a ring. A through-hole seat (26) is provided through the middle of the two fitting seats (24). The two fitting seats (24) are fitted with the same screw seat (27) for quick replacement of grinding heads (3) of different specifications.

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