A polishing device for stone processing and its abrasive tool

Abstract

The present invention specifically relates to a polishing device and its abrasive tool for stone processing, belonging to the technical field of stone processing. It includes a lower grinding table and an upper grinding table with the same structure and arranged oppositely, two mounting brackets respectively used for mounting the lower grinding table and the upper grinding table, and a dust-proof sleeve arranged between the lower grinding table and the upper grinding table. The lower grinding table and the upper grinding table can rotate in opposite directions on the upper and lower sides of the stone plate inside the dust-proof sleeve for grinding, achieving synchronous grinding up and down. This synchronous grinding method can effectively ensure the uniformity of the surface grinding of circular stone plates, improve the appearance quality and grinding efficiency of stone products. The upper grinding table and the lower grinding table can be respectively inserted into the upper and lower pipe orifices of the dust-proof sleeve for adaptation. A dust plug disk that can be flexibly adjusted up and down in position is sleeved outside the fixing blocks of the lower grinding table and the upper grinding table. After the upper and lower dust plug disks are inserted into the dust-proof sleeve, the airbag ring is elastically attached to the inner wall of the dust-proof sleeve, forming a closed grinding space in the middle of the dust-proof sleeve.

Description

Technical Field

[0001] The present invention specifically relates to a polishing device and a grinding tool for stone processing, belonging to the technical field of stone processing. Background Art

[0002] Round stone plates usually include products such as round stone tables, decorative plates, and garden stone piers. In the field of stone processing, especially in the processing of round stone plates, the grinding process is crucial. With the increasing demand for stone products in industries such as architectural decoration and handicraft production, higher requirements are also put forward for the efficiency, quality, and safety of stone grinding. Round stone plates are favored in many application scenarios due to their unique aesthetics. When grinding round stone plates, the existing grinding tools cannot effectively grind synchronously up and down. Not only is the efficiency slow, but it may also over-grind in some areas of the plate, resulting in uneven grinding on the stone surface and affecting the appearance quality of stone products. Moreover, the existing grinding equipment has an open environment during grinding, and a large amount of debris and dust will be generated during the stone grinding process. Due to the lack of effective enclosure or dust suction structure, these debris and dust will pervade the working environment. A large amount of debris and dust will not only pollute the working environment and endanger the physical health of operators, such as causing respiratory diseases if inhaled for a long time, but also affect the service life of the equipment. The dust entering some precision components of the equipment may cause wear or failure. At the same time, during the grinding process of this kind of equipment, the high-speed rotating grinding tool and the flying debris may cause harm to the operator. Without proper protection structure, the operator faces a greater safety risk. Therefore, due to the combined effects of the above problems such as asynchronous grinding tools, open environment, and lack of safety protection, the overall grinding efficiency and stability need to be improved. It is urgent to propose a polishing device and a grinding tool for stone processing to improve the quality, efficiency, and safety of stone processing. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a polishing device and a grinding tool for stone processing to solve the problems mentioned in the above background art.

[0004] To achieve the above purpose, the present invention is realized by the following technical solutions: A grinding tool includes a lower grinding table and an upper grinding table with the same structure and arranged oppositely, two mounting frames respectively used for mounting the lower grinding table and the upper grinding table, and a dust-proof sleeve arranged between the lower grinding table and the upper grinding table. The upper grinding table and the lower grinding table can be respectively inserted into the upper and lower pipe orifices of the dust-proof sleeve to form a closed grinding space.

[0005] The lower grinding table structure includes a fixed block locked and mounted on the mounting frame, a rotating shaft connected by a central shaft of the fixed block, a connecting plate fixed on the top of the rotating shaft, and a grinding plate mounted on the upper side of the connecting plate. The upper side of the fixed block and the lower side of the connecting plate are rotatably fitted and supported. A grinding motor is installed on the mounting frame, and the grinding motor is connected to the rotating shaft through a transmission belt. The grinding plates of the lower grinding table and the upper grinding table rotate in opposite directions to grind the upper and lower sides of the stone slab in a closed grinding space.

[0006] The outer side of the fixed block is provided with a dust plug tray which can be adjusted up and down. The outer diameter of the dust plug tray is larger than the outer diameter of the grinding plate, and the dust plug tray is located directly below the grinding plate to collect dust. A cylinder hole connected to the outside air is provided at the bottom of the dust plug tray. The cylinder hole of the lower grinding table is connected to the air suction end of the external vacuum cleaner through an air pipe, and the cylinder hole of the upper grinding table is connected to the air outlet end of the external vacuum cleaner through an air pipe, so that the air in the closed grinding space can be circulated and filtered, which can effectively remove the dust generated during the grinding process and maintain the reasonable flow of air in the closed space, thereby further improving the dust treatment efficiency. Air bag rings are respectively fixed on the upper and lower edges of the dust plug tray, and are elastically attached to the inner wall of the dustproof sleeve through the air bag rings.

[0007] A further improvement based on the above technical solution is that a V-shaped scraper is installed on one side of the bottom of the connecting plate through a telescopic adjustment rod. The V-shaped scraper can fit closely on the inner bottom of the dust plug pan, and the middle turning point of the V-shaped scraper corresponds to the upper side of the air cylinder hole. The V-shaped scraper rotates with the connecting plate to scrape the dust on the bottom of the dust plug pan into the air cylinder hole.

[0008] The above technical solution is further improved as follows: a cleaning assembly is provided in the dust plug disc, and the cleaning assembly is installed on the other side of the bottom of the connecting plate. The cleaning assembly structure includes a vertical plug rod, a movable sleeve, a rotating gear and a cleaning brush. The top of the vertical plug rod is screwed to one side of the bottom of the connecting plate, and the movable sleeve is movably sleeved on the lower side of the vertical plug rod. The cleaning brush is installed on the lower side of the rotating gear and contacts the inner side of the dust plug disc. A cleaning assembly and a V-shaped scraper are provided in the dust plug disc. The V-shaped scraper can concentrate the dust at the bottom of the dust plug disc into the air cylinder hole. The cleaning assembly The cleaning brush of the component can clean the bottom of the inner plate of the dust plug pan again, and it is helpful to lift the dust in the closed grinding space during cleaning. Combined with the blowing and suction effect of the vacuum cleaner, the dust can be more easily sucked into the air cylinder hole of the lower grinding table, which greatly improves the dust treatment effect and efficiency. Furthermore, the bottom of the movable sleeve is locked and connected with the upper side of the rotating gear, and a return spring is provided on the inner side of the movable sleeve. The upper side of the rotating gear is elastically connected with the bottom of the vertical plug rod through the return spring. The cleaning brush elastically contacts the inner side of the dust plug pan under the action of the return spring, and is more flexible and applicable to use.

[0009] A further improvement based on the above technical solution is as follows: A plurality of mounting holes are provided on the upper side of the fixed block, and the lower side of the dust plug disk is correspondingly locked to the mounting holes by screws. A toothed ring is fixedly provided in the middle of the inner side of the dust plug disk. The V-shaped scraping blades and the toothed ring are distributed at different heights up and down. The toothed ring is in meshing transmission with the rotating gear, so that the cleaning brush rotates along the outer side of the toothed ring while rotating itself, further improving the dust cleaning efficiency and ensuring that the dust in the dust plug disk can be effectively collected and processed.

[0010] A further improvement based on the above technical solution is as follows: A plurality of calibration components for pushing against the outer periphery of the stone slab are annularly and regularly distributed in the middle of the dust-proof sleeve. The calibration component includes a mounting bottom plate, a top-out telescopic rod, and a movable frame. The mounting bottom plate is fixedly provided on the outer periphery of the dust-proof sleeve. The telescopic end of the top-out telescopic rod faces the dust-proof sleeve and is locked and installed on the mounting bottom plate. The movable frame is fixedly installed at the telescopic end of the top-out telescopic rod, and the movable frame can make a linear reciprocating displacement from the outside to the inside of the dust-proof sleeve. A rubber pressing roller is rotatably installed at the front end of the movable frame. After each top-out telescopic rod extends, the rubber pressing roller can push against the outer peripheral surface of the stone slab to ensure the position accuracy of the stone during the grinding process.

[0011] Moreover, a driven gear is fixedly provided at the top shaft end of the rubber pressing roller, and a rotating motor is installed inside the movable frame. A driving gear meshing with the driven gear is installed at the shaft end of the rotating motor. Therefore, the driving gear and the driven gear driven by the rotating motor enable the rubber pressing roller to rotate. When the rubber pressing roller abuts against the side of the stone slab, by accurately controlling the position of the stone, the grinding precision is improved. And the rubber pressing roller can control the rotation speed of the stone slab through the rotation driven by the motor, and the latter limits the stone slab, further improving the grinding control effect, thereby helping to improve the grinding efficiency.

[0012] It also includes a polishing device for stone processing applying the above technical solution. The polishing device includes a machine frame for installing two mounting frames. The dust-proof sleeve is locked and installed in the middle of the machine frame. Driving mechanisms for driving the two mounting frames to move up and down independently are respectively provided on both sides of the machine frame. The driving mechanism includes an outer frame locked to the machine frame and a rotating rod vertically rotatably installed in the middle of the outer frame. The rotating rods of the two driving mechanisms both slide through the two sides of the two mounting frames, and the driving threads of the two rotating rods are arranged at different heights up and down. The driving thread of one rotating rod is in threaded transmission connection with the mounting frame of the lower grinding table, and the driving thread of the other rotating rod is in threaded transmission connection with the mounting frame of the upper grinding table. A lifting motor for driving the rotating rod to rotate is installed at the top of the outer frame. By the lifting motors of the two driving mechanisms, the lower grinding table and the upper grinding table are respectively flexibly and stably controlled to move up and down, improving the flexibility of the equipment operation and facilitating the adjustment of the position of the grinding tool according to different grinding requirements.

[0013] Further: Sliding guide rods are vertically installed on both sides of the outer frame. Both sides of the two mounting frames are slidably connected to the sliding guide rods up and down through sliders, and the rotating rod guides the mounting frame. Combined with the guiding function of the sliding guide rods.

[0014] Further: Two first conveyor belts are oppositely installed on the front and rear sides of the frame. The lower grinding table, the upper grinding table and the dust-proof sleeve are all located between the two first conveyor belts. The horizontal line on the upper side of the dust-proof sleeve is not higher than the horizontal conveying position on the upper side of the first conveyor belt.

[0015] Further: A second conveyor belt and a pushing telescopic rod are respectively installed on the frame below the two first conveyor belts. The telescopic end of the pushing telescopic rod faces the second conveyor belt, and an arc-shaped pushing plate is fixedly installed at the telescopic end of the pushing telescopic rod. The horizontal line on the lower side of the arc-shaped pushing plate is higher than the horizontal conveying position on the upper side of the second conveyor belt, while the horizontal line on the upper side of the arc-shaped pushing plate is lower than the horizontal line on the lower side of the dust-proof sleeve, which improves the automation level of the equipment, makes the whole grinding process more smooth, and further improves the overall processing efficiency.

[0016] By adopting the above technical solutions, the present invention has the following advantages:

[0017] In the present invention, the grinding tools are provided with a lower grinding table and an upper grinding table with the same structure and arranged oppositely. The lower grinding table and the upper grinding table can rotate and grind the upper and lower sides of the stone plate in the dust-proof sleeve in opposite directions, realizing synchronous grinding up and down. This synchronous grinding method can effectively ensure the uniformity of the surface grinding of the circular stone plate, improve the appearance quality and grinding efficiency of the stone products;

[0018] And when the above stone plate is ground on both the upper and lower sides, it also has the function of dust collection. The upper grinding table and the lower grinding table can be respectively inserted into the upper and lower pipe orifices of the dust-proof sleeve by matching. Dust plug disks that can be adjusted up and down flexibly are sleeved on the outer sides of the fixing blocks of the lower grinding table and the upper grinding table. The outer diameter of the dust plug disk is larger than the outer diameter of the grinding plate for collecting dust. After the upper and lower dust plug disks are inserted into the dust-proof sleeve, the airbag ring elastically clings to the inner wall of the dust-proof sleeve. The airbag ring can elastically adapt to different inner diameters of the dust-proof sleeve, forming a closed grinding space in the middle of the dust-proof sleeve, which can effectively prevent debris and dust from spreading outwards, reduce the pollution of the working environment and the harm to the health of the operators, and can also reduce the harm caused by the high-speed rotating grinding tools and flying debris to the operators during the grinding process to a certain extent, improving the safety protection of the equipment; and air cylinder holes are opened at the bottom of the dust plug disk. The air cylinder hole of the lower grinding table is connected to the suction end of an external vacuum cleaner through a trachea, and the air cylinder hole of the upper grinding table is connected to the air outlet end of the external vacuum cleaner through a trachea, enabling the air in the closed grinding space to circulate and be filtered, which can not only effectively remove the dust generated during the grinding process, but also maintain the reasonable flow of the air in the closed space, further improving the dust treatment efficiency;

[0019] Moreover, a cleaning component and a V-shaped scraper are provided inside the dust plug plate. They can cooperate with the rotation of the connecting plate to effectively clean the dust inside the closed grinding space and the inner side of the dust plug plate. The V-shaped scraper is adapted to fit the inner bottom of the dust plug plate, and the middle turning part corresponds to the upper side of the air cylinder hole. As the connecting plate rotates, the V-shaped scraper can scrape the dust at the bottom of the dust plug plate into the air cylinder hole, quickly scraping the deposited dust debris into the air cylinder hole and collecting it in an external vacuum cleaner, avoiding long-term accumulation and overflow. The cleaning brush of the cleaning component can also rotate with the connecting plate to clean the inner bottom of the dust plug plate again after being scraped by the V-shaped scraper. During cleaning, it is also beneficial to raise the dust in the closed grinding space. Combining the blowing and suction effects of the above-mentioned vacuum cleaner, the dust is more easily sucked into the air cylinder hole of the lower grinding table, greatly improving the dust treatment effect and efficiency;

[0020] Furthermore, since the rotating gear of the cleaning component meshes with the toothed ring in the middle of the inner side of the dust plug plate for transmission, the cleaning brush can rotate along the outer side of the toothed ring while rotating itself, which can further improve the dust cleaning efficiency, ensure that the dust inside the dust plug plate can be effectively collected and processed, and the cleaning brush can elastically contact the inner side of the dust plug plate under the action of the return spring, making the use of the entire cleaning brush more flexible and applicable;

[0021] Among them, a plurality of ejecting and correcting components are annularly and regularly distributed in the middle of the dust-proof sleeve, which can push the outer periphery of the stone plate to ensure the position accuracy of the stone during the grinding process. At the same time, the rubber pressing roller of the ejecting and correcting component can press against the side of the stone plate, thereby controlling the rotation state of the stone plate or restricting its rotation, which is beneficial to improving the grinding control effect and grinding efficiency;

[0022] In addition, the rotating rods of the two driving mechanisms of the frame both play a role in guiding the two mounting frames. Moreover, the transmission threads of the two rotating rods staggered up and down can respectively drive the lower grinding table and the upper grinding table to move up and down independently through screw threads. Combining with the guiding effect of the sliding guide rod, the up and down movement of the lower grinding table and the upper grinding table can be flexibly and stably controlled. There are two first conveyor belts on the frame that can respectively convey the stone plate into the lower grinding table, and the two first conveyor belts can be switched for use, which can improve the overall feeding efficiency. There are also a second conveyor belt and a pushing telescopic rod below the two first conveyor belts to facilitate the discharging of the stone plate, improve the automation level of the equipment, make the entire grinding process smoother, and further improve the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 It is a schematic structural diagram of the grinding tool of the present invention;

[0025] Figure 2Schematic diagram of the exploded structure of the abrasive tool of the present invention;

[0026] Figure 3 of the present invention Figure 2 Schematic diagram of the structure from another perspective;

[0027] Figure 4 Schematic diagram of the structure of the dust plug disk of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the cleaning assembly of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the polishing equipment for stone processing of the present invention;

[0030] Figure 7 Schematic diagram of the partial structure of the polishing equipment for stone processing of the present invention;

[0031] Figure 8 Schematic diagram of the structure of the abrasive tool in the polishing state of the present invention;

[0032] Figure 9 Schematic diagram of the connection structure between the driving mechanism and the abrasive tool of the present invention;

[0033] Figure 10 Schematic diagram of the structure of the ejecting and correcting assembly of the present invention;

[0034] In the figure: lower polishing table 1, fixing block 10, rotating shaft 11, connecting plate 12, V-shaped scraper 121, cleaning assembly 122, vertical insertion rod 1221, movable sleeve 1222, rotating gear 1223, cleaning brush 1224, return spring 1225, polishing plate 13, dust plug disk 14, air cylinder hole 141, airbag ring 142, toothed ring 143, mounting hole 15, upper polishing table 2, mounting frame 3, polishing motor 31, transmission belt 32, mounting through hole 33, machine frame 4, dust-proof sleeve 5, ejecting and correcting assembly 51, mounting base plate 511, ejecting telescopic rod 512, movable frame 513, rubber pressing roller 514, driving gear 515, driving mechanism 6, outer frame 61, rotating rod 62, transmission thread 621, sliding guide rod 63, lifting motor 64, first conveyor belt 7, second conveyor belt 8, pushing telescopic rod 9, arc-shaped pushing plate 91. Detailed implementation manners

[0035] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0036] Such as Figures 1-10As shown in the figure, the present invention provides a technical solution for a grinding tool. A grinding tool includes a lower grinding table 1 and an upper grinding table 2 which have the same structure and are arranged oppositely, two mounting brackets 3 respectively used for mounting the lower grinding table 1 and the upper grinding table 2, and a dust-proof sleeve 5 arranged between the lower grinding table 1 and the upper grinding table 2. The upper grinding table 2 and the lower grinding table 1 can be respectively inserted into the upper and lower pipe orifices of the dust-proof sleeve 5 in a matching manner to form a closed grinding space, effectively preventing debris and dust from spreading outwards, reducing the pollution of the working environment, reducing the harm of dust to the health of operators, and at the same time, to a certain extent, reducing the harm caused by the high-speed rotating grinding tool and flying debris to the operators during the grinding process, improving the safety protection of the equipment.

[0037] The structure of the lower grinding table 1 includes a fixing block 10 fixedly installed on the mounting bracket 3, a rotating shaft 11 axially penetrated and connected in the middle of the fixing block 10, a connecting plate 12 fixed on the top of the rotating shaft 11, and a grinding plate 13 installed on the upper side of the connecting plate 12. The upper side of the fixing block 10 is in rotational contact and support with the lower side of the connecting plate 12, strengthening the structural strength, used for rotationally supporting the connecting plate 12 and the weight of the stone plate on the grinding plate 13, avoiding the inclination that is likely to occur when supported by a single rotating shaft 11. A grinding motor 31 is installed on the mounting bracket 3, and the grinding motor 31 is in transmission connection with the rotating shaft 11 through a transmission belt 32. The grinding plates 13 of the lower grinding table 1 and the upper grinding table 2 rotate and grind the upper and lower sides of the stone plate in the opposite direction in the closed grinding space, which can ensure the uniformity of the surface grinding of the circular stone plate, avoid the situation of excessive grinding in some areas of the plate, and improve the appearance quality of the stone product. At the same time, compared with the single grinding method of the existing grinding tool, synchronous grinding greatly improves the grinding efficiency; and after the circular stone plate is placed on the grinding plate 13 of the lower grinding table 1, the grinding plates 13 of the lower grinding table 1 and the upper grinding table 2 can rotate and grind in the opposite direction with different speed differences. This method can remove the surplus on the stone surface more quickly compared with single-direction grinding. For example, when processing garden stone piers, more stone materials need to be removed to achieve the ideal shape and surface quality. Reverse rotational grinding with a speed difference can complete the task of material removal in a shorter time, improving the overall efficiency of grinding; and because the grinding plates 13 of the lower grinding table 1 and the upper grinding table 2 rotate with a reverse speed difference, the forces generated by their rotations can cancel each other out to a certain extent, which helps to reduce the vibration of the equipment during the grinding process. The reduction of equipment vibration can not only improve the grinding accuracy, but also reduce the damage to the equipment itself caused by vibration, extend the service life of the equipment, and at the same time reduce the safety risks that may be brought to the operators due to equipment vibration. And reverse rotational grinding with a speed difference makes the stone plate more stable during the grinding process. Since both the upper and lower sides of the stone are closely attached to the grinding plate, the possibility of stone splashing or accidental movement of the equipment due to instability is reduced.

[0038] A dust plug disc 14 with an adjustable vertical position is sleeved outside the fixed block 10. Specifically, a plurality of mounting holes 15 are formed in the upper side of the fixed block 10, and the lower side of the dust plug disc 14 is locked to the mounting holes 15 by screws correspondingly. In this way, when grinding relatively thick stone plates, the positions of the two dust plug discs 14 can be adjusted closer to each other, so as to match the height of the dust-proof sleeve 5 and prevent the airbag rings 142 of the two dust plug discs 14 from failing to block the upper and lower pipe orifices of the dust-proof sleeve 5. Moreover, the outer diameter of the dust plug disc 14 is larger than the outer diameter of the grinding plate 13, and the dust plug disc 14 is located directly below the grinding plate 13. That is to say, the dust plug disc 14 not only plays a role in blocking but also can be used to collect the dust generated when the grinding plate 13 grinds the stone plate.

[0039] At the same time, an air cylinder hole 141 communicating with the outside air is formed at the bottom of the dust plug disc 14. The air cylinder hole 141 of the lower grinding table 1 is connected to the suction end of an external dust collector through an air pipe, and the air cylinder hole 141 of the upper grinding table 2 is connected to the air outlet end of the external dust collector through an air pipe. This can make the upper dust plug disc 14 have a blowing effect, improving the internal air flow velocity. The lower dust plug disc 14 is mainly used for collecting and absorbing dust and circulating and filtering the air in the closed grinding space, greatly improving the dust removal effect. Among them, airbag rings 142 are respectively fixed on the upper and lower edges of the dust plug disc 14, and are elastically attached to the inner wall of the dust-proof sleeve 5 through the airbag rings 142. The elastic effect of the airbag rings 142 can be adapted to closely adhere to the inner side of different dust-proof sleeves 5, forming a closed grinding space in the middle of the dust-proof sleeve 5 and avoiding hard contact between the dust plug disc 14 and the inner side of the dust-proof sleeve 5, resulting in wear.

[0040] In the above technical solution, a V-shaped scraper 121 is installed at one side of the bottom of the connecting plate 12 through a telescopic adjusting rod. The V-shaped scraper 121 can be adapted to fit on the inner bottom of the dust plug disc 14, and the middle turning point of the V-shaped scraper 121 corresponds to the upper side of the air cylinder hole 141. When the equipment starts the grinding operation, the connecting plate 12 starts to rotate. Due to the connection between the V-shaped scraper 121 and the connecting plate 12, the V-shaped scraper 121 also rotates accordingly. During the rotation process, the edge of the V-shaped scraper 121 fits the inner bottom of the dust plug disc 14, gradually scraping the dust deposited on the bottom towards the middle. Because of its special V-shaped structure, it can effectively concentrate the dust at different positions to the middle. As the V-shaped scraper 121 rotates, the dust is concentrated at its turning point. Since the turning point corresponds to the upper side of the air cylinder hole 141, the dust is easily concentrated and scraped into the air cylinder hole 141 under the push of the V-shaped scraper 121. The air cylinder hole 141 of the lower grinding table 1 is connected to the suction end of the external dust collector, so that the dust scraped into the air cylinder hole 141 is more easily sucked away by the dust collector, thus realizing the effective cleaning of the dust, preventing the dust from accumulating and overflowing in the dust plug disc 14 for a long time, ensuring the cleanliness of the grinding space, and improving the dust treatment efficiency.

[0041] In the above technical solution, a cleaning assembly 122 is provided in the dust plug tray 14 for use in combination with a V-shaped scraper 121. The cleaning assembly 122 is installed on the other side of the bottom of the connecting plate 12, so that the cleaning assembly 122 can rotate with the rotation of the connecting plate 12, thereby providing a power source for the cleaning work. The cleaning assembly 122 structure includes a vertical plug rod 1221, a movable sleeve 1222, a rotating gear 1223 and a cleaning brush 1224. The top of the vertical plug rod 1221 is screwed to one side of the bottom of the connecting plate 12, and the movable sleeve 1222 is movably sleeved up and down under the vertical plug rod 1221. The cleaning brush 1224 is installed on the lower side of the rotating gear 1223, and the bottom of the movable sleeve 1222 is locked and connected with the upper side of the rotating gear 1223, so that the cleaning brush 1224 can rotate with the rotation of the rotating gear 1223 to clean the dust plug tray 14, and a return spring 1225 is provided on the inner side of the movable sleeve 1222, and the upper side of the rotating gear 1223 is elastically connected to the bottom of the vertical plug rod 1221 through the return spring 1225. The return spring 1225 enables the cleaning brush 1224 to maintain a certain elastic contact during the working process to adapt to the surface condition of the dust plug tray 14;

[0042] It is further configured that a gear ring 143 is fixedly provided on the middle part of the inner side of the dust plug tray 14, and the V-shaped scraper 121 and the gear ring 143 are staggered up and down, and the gear ring 143 is meshed with the rotating gear 1223 for transmission, so that the cleaning brush 1224 rotates along the outer side of the gear ring 143. At the same time, the rotating gear 1223 meshes with the gear ring 143 to allow the cleaning brush 1224 to rotate on its own, thereby improving the cleaning effect and efficiency.

[0043] In this embodiment, four calibration components 51 for pushing against the outer periphery of the stone slab are annularly and evenly distributed in the middle of the dust-proof sleeve 5. The calibration component 51 includes a mounting base plate 511, an ejecting telescopic rod 512, and a movable frame 513. The mounting base plate 511 is fixedly arranged on the outer periphery of the dust-proof sleeve 5. The telescopic end of the ejecting telescopic rod 512 faces one side of the dust-proof sleeve 5 and is locked and installed on the mounting base plate 511. The movable frame 513 is fixedly installed at the telescopic end of the ejecting telescopic rod 512, and the movable frame 513 can linearly reciprocate and displace from the outside to the inside of the dust-proof sleeve 5. A rubber pressing roller 514 is rotatably installed at the front end of the movable frame 513 for rotatably pressing against the outer side of the stone slab, which can apply force from multiple points to minimize the position deviation of the stone slab. This multi-directional calibration method can more accurately adjust the central position of the stone slab. At this time, the rubber pressing roller 514 is in a freely rotating state and can rotate when fitting against the outer side of the stone slab, reducing the friction between them and not causing damage to the surface of the stone slab during the pushing and calibration process, ensuring the accuracy of calibration. In addition, a driven gear is fixedly arranged at the top shaft end of the rubber pressing roller 514, and a rotating motor is installed inside the movable frame 513. A driving gear 515 meshing with the driven gear is installed at the shaft end of the rotating motor. The rotating state of the rubber pressing roller 514 can be controlled and then restricted by the rotating motor. When the upper and lower grinding plates 13 grind the stone slab in opposite directions, the rotating motor can accurately control the rotation or non-rotation of the rubber pressing roller 514, thereby applying a certain lateral force to the side of the stone slab. These lateral forces can assist the grinding plates 13 to accurately grind the upper and lower surfaces of the stone slab and improve the grinding effect.

[0044] It also includes a polishing device for stone processing applying the above technical solution. The polishing device includes a machine frame 4 for installing two mounting frames 3. The dust-proof sleeve 5 is locked and installed in the middle of the machine frame 4. Driving mechanisms 6 for driving the two mounting frames 3 to separately move up and down are respectively arranged on both sides of the machine frame 4. The driving mechanism 6 includes an outer frame 61 locked with the machine frame 4 and a rotating rod 62 vertically rotatably installed in the middle of the outer frame 61. The rotating rods 62 of the two driving mechanisms 6 both slide through the two sides of the two mounting frames 3, so that the two mounting frames 3 can both move up and down on the rotating rod 62. A lifting motor 64 for driving the rotating rod 62 to rotate is installed at the top of the outer frame 61, and transmission threads 621 are arranged on the two rotating rods 62 in a vertically staggered manner. The transmission thread 621 of one rotating rod 62 is in threaded transmission connection with the mounting frame 3 of the lower grinding table 1, and the transmission thread 621 of the other rotating rod 62 is in threaded transmission connection with the mounting frame 3 of the upper grinding table 2, so that the two rotating rods 62 can respectively drive the lower grinding table 1 and the upper grinding table 2 to stably move up and down in a threaded manner.

[0045] Wherein, sliding guide rods 63 are vertically installed on both sides of the outer frame 61, and both sides of the two mounting frames 3 are slidably connected to the sliding guide rods 63 through sliders, realizing a double guiding function in cooperation with the rotating rod 62 and improving the stability of the lifting structure.

[0046] Moreover, two first conveyor belts 7 are relatively installed on the front and rear sides of the rack 4 for conveying stone plates to the grinding station. The cooperation of the two first conveyor belts 7 for conveying has higher efficiency. And even if one of the first conveyor belts 7 is damaged, the other first conveyor belt 7 can still continue to be used for conveying. The lower grinding table 1, the upper grinding table 2 and the dust-proof sleeve 5 are all located between the two first conveyor belts 7. The horizontal line on the upper side of the dust-proof sleeve 5 is not higher than the horizontal conveying position on the upper side of the first conveyor belt 7, so that the stone plates conveyed by the first conveyor belt 7 can be received by the rising lower grinding table 1.

[0047] In order to facilitate the quick discharging of the ground plates, a second conveyor belt 8 and a pushing telescopic rod 9 are respectively installed on the rack 4 below the two first conveyor belts 7. The telescopic end of the pushing telescopic rod 9 faces the second conveyor belt 8. And an arc-shaped push plate 91 is fixedly arranged at the telescopic end of the pushing telescopic rod 9. The width of the arc-shaped push plate 91 is greater than the width of the stone plate, and there are no sharp corners to avoid contact wear. The horizontal line on the lower side of the arc-shaped push plate 91 is higher than the horizontal conveying position on the upper side of the second conveyor belt 8, while the horizontal line on the upper side of the arc-shaped push plate 91 is lower than the horizontal line on the lower side of the dust-proof sleeve 5. After the arc-shaped push plate 91 is pushed out by the pushing telescopic rod 9, the ground stone plates on the lower grinding table 1 can be pushed onto the second conveyor belt 8 and sent out by the second conveyor belt 8.

[0048] For a more specific working principle, during use, since the drive mechanisms 6 on both sides of the frame 4 are used to drive the mounting frames 3 of the lower grinding table 1 and the upper grinding table 2 to move up and down independently, it is necessary to first drive the rotating rod 62 through the lifting motor 64 of one of the drive mechanisms 6, so that the transmission thread 621 on the lower side of the rotating rod 62 drives the mounting frame 3 of the lower grinding table 1. The lower grinding table 1 can be stably lifted upward under the double guidance of the sliding guide rod 63 and the other rotating rod 62, so that the grinding plate 13 on the upper side of the lower grinding table 1 passes through the dust-proof sleeve 5 and is flush with the two first conveyor belts 7. The two first conveyor belts 7 can be switched for use, improving the efficiency of feeding the plates. After the circular stone plates are respectively conveyed to the grinding plate 13 on the upper side of the lower grinding table 1 by the two first conveyor belts 7, the lower grinding table 1 moves downward under the action of the other drive mechanism 6. After the circular stone plates are conveyed to the appropriate position in the middle of the dust-proof sleeve 5, the calibration components 51 annularly and evenly distributed in the middle of the dust-proof sleeve 5 start to work. The ejecting telescopic rod 512 in the calibration component 51 extends out, driving the movable frame 513 to move linearly from the outside of the dust-proof sleeve 5 to the inside, so that the rubber pressing roller 514 rotatably installed at the front end of the movable frame 513 rotates and presses tightly against the outer side of the round stone plate, and calibrates it to the center position of the grinding plate 13. At this time, the grinding plate 13 of the upper grinding table 2 is driven by the other drive mechanism 6 to move downward and press tightly against the upper side of the stone plate. That is to say, at this time, the airbag rings 142 on the outer circles of the dust plug disks 14 of the upper grinding table 2 and the lower grinding table 1 are elastically inserted into the dust-proof sleeve 5, further ensuring the sealing property, so as to form a closed grinding space in the dust-proof sleeve 5;

[0049] Then prepare to perform the grinding operation. Since the structures of the lower grinding table 1 and the upper grinding table 2 are similar, the grinding motor 31 is connected to the rotating shaft 11 through the transmission belt 32, so that the grinding plates 13 of the lower grinding table 1 and the upper grinding table 2 rotate in opposite directions to grind the upper and lower sides of the circular stone slab in a closed grinding space. This reverse rotation grinding can grind the stone more comprehensively and evenly, and improve the uniformity and efficiency of grinding. During this period, when the rubber roller 514 of the correction component 51 is in a free rotation state, it can follow the rotation of the stone slab to avoid the deviation of the stone due to the single direction of force. When the rubber roller 514 is in a restricted rotation state, it provides a certain tightening force to tighten the stone slab to restrict its rotation, providing a certain force , so that the upper and lower grinding plates 13 rotate and grind. Of course, the rotating motor can also rotate the rubber roller 514 through the driving gear 515 and the driven gear at one end of the transmission rubber roller 514, thereby assisting the rotation of the circular stone plate. It can be controlled according to the use requirements. The force exerted on the stone plate in each state is different, which can improve its grinding flexibility and grinding effect. During grinding, since the diameter of the dust plug disc 14 is larger than the diameter of the grinding plate 13, the dust plug disc 14 of the lower grinding table 1 can be used to receive dust, and an air cylinder hole 141 is provided at the bottom of the dust plug disc 14. The air cylinder hole 141 of the lower grinding table 1 is connected to the suction end of the external vacuum cleaner through an air pipe, and the air cylinder hole 141 of the upper grinding table 2 is connected to the suction end of the external vacuum cleaner through an air pipe. The air outlet of the external vacuum cleaner is connected. After the vacuum cleaner is working, the dust can be sucked in and filtered through the air cylinder hole 141 of the lower grinding table 1, and then the filtered gas is blown out through the air cylinder hole 141 of the upper grinding table 2, so as to improve the internal air flow effect and realize the air circulation filtration in the closed grinding space. In the grinding process, the V-shaped scraper 121 installed on one side of the bottom of the connecting plate 12 through the telescopic adjustment rod rotates with the connecting plate 12. Since the V-shaped scraper 121 can be adapted to fit the bottom of the inner side of the dust plug tray 14, and the middle turning point corresponds to the upper side of the air cylinder hole 141, the dust and debris deposited on the bottom of the dust plug tray 14 can be scraped into the air cylinder hole 141; at the same time, the cleaning component 122 in the dust plug tray 14 also cooperates The top of the vertical plug rod 1221 in the cleaning component 122 is screwed with one side of the bottom of the connecting plate 12, so that the cleaning brush 1224 can follow the connecting plate 12 to rotate and clean the inner side of the dust plug disc 14, so as to achieve the effect of cleaning the inner bottom of the dust plug disc 14 again after being scraped by the V-shaped scraper 121, and the cleaning brush 1224 can mesh with the toothed ring 143 in the middle of the inner side of the dust plug disc 14 when rotating, so that the cleaning brush 1224 rotates along the outer side of the toothed ring 143 and rotates at the same time, thereby improving its cleaning effect, and also facilitating the dust to be lifted in the closed grinding space during cleaning, and combined with the blowing and suction effect of the vacuum cleaner, the dust can be more easily sucked into the cylinder hole 141 of the lower grinding table 1, thereby once again improving the dust treatment effect and efficiency;

[0050] After the stone grinding is completed, the upper grinding table 2 moves upward, the ejecting telescopic rod 512 of the ejecting correction assembly 51 contracts outward for resetting, and the driving mechanism 6 drives the mounting frame 3 of the lower grinding table 1 to continue to move downward, so that the polished stone plate on its grinding plate 13 is located on one side of the second conveyor belt 8, and the pushing telescopic rod 9 located below the two first conveyor belts 7 on the other side works. Its telescopic end is arranged towards the second conveyor belt 8, and an arc-shaped push plate 91 is fixedly arranged at the telescopic end. Since the horizontal line on the lower side of the arc-shaped push plate 91 is higher than the horizontal conveying position on the upper side of the second conveyor belt 8, and the horizontal line on the upper side of the arc-shaped push plate 91 is lower than the horizontal line on the lower side of the dust-proof sleeve 5, the pushing telescopic rod 9 expands and contracts to drive the arc-shaped push plate 91 to quickly push the stone onto the second conveyor belt 8, and the polished stone is transported out through the second conveyor belt 8, that is, the polishing process of the entire stone processing is completed.

[0051] The above embodiments show and describe the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A polishing device for stone processing, characterized in that: The invention comprises a lower grinding table (1) and an upper grinding table (2) of identical structure and arranged opposite to each other, two mounting frames (3) for mounting the lower grinding table (1) and the upper grinding table (2) respectively, and a dustproof sleeve (5) arranged between the lower grinding table (1) and the upper grinding table (2); the upper grinding table (2) and the lower grinding table (1) can be respectively inserted into the upper and lower pipe openings of the dustproof sleeve (5) to form a closed grinding space; The structure of the lower grinding table (1) comprises a fixed block (10) fixedly mounted on a mounting frame (3), a rotating shaft (11) connected by a central shaft of the fixed block (10), a connecting plate (12) fixed on the top of the rotating shaft (11), and a grinding plate (13) mounted on the upper side of the connecting plate (12); the upper side of the fixed block (10) and the lower side of the connecting plate (12) are rotatably fitted and supported; a grinding motor (31) is mounted on the mounting frame (3), and the grinding motor (31) is connected to the rotating shaft (11) by a transmission belt (32); the grinding plates (13) of the lower grinding table (1) and the upper grinding table (2) rotate in opposite directions to grind the upper and lower sides of the stone slab in a closed grinding space; The fixed block (10) is sleeved with a dust plug disc (14) whose position can be adjusted up and down. The outer diameter of the dust plug disc (14) is larger than the outer diameter of the grinding plate (13). The dust plug disc (14) is located directly below the grinding plate (13) and is used to collect dust. The bottom of the dust plug tray (14) is provided with an air cylinder hole (141) for communicating with the outside air; the air cylinder hole (141) of the lower grinding table (1) is connected to the air suction end of an external vacuum cleaner via an air pipe, while the air cylinder hole (141) of the upper grinding table (2) is connected to the air outlet end of an external vacuum cleaner via an air pipe, so that the air in the closed grinding space is circulated and filtered; The dust plug disc (14) is respectively provided with air bag rings (142) on the upper and lower edges thereof, and is elastically and tightly attached to the inner wall of the dust-proof sleeve (5) through the air bag rings (142); The machine also comprises a frame (4) for mounting two mounting frames (3), the dustproof sleeve (5) being fixedly mounted in the middle of the frame (4), and drive mechanisms (6) for driving the two mounting frames (3) to move up and down independently being respectively arranged on both sides of the frame (4), the drive mechanisms (6) comprising an outer frame (61) locked with the frame (4), and a rotating rod (62) vertically rotatingly mounted in the middle of the outer frame (61), the rotating rods (62) of the two drive mechanisms (6) both slide through both sides of the two mounting frames (3), and the two rotating rods (62) are staggered up and down and provided with transmission threads (621), the transmission thread (621) of one rotating rod (62) being threadedly connected to the mounting frame (3) of the lower grinding table (1), and the transmission thread (621) of the other rotating rod (62) being threadedly connected to the mounting frame (3) of the upper grinding table (2), and a lifting motor (64) for driving the rotating rod (62) to rotate is installed on the top of the outer frame (61); Two first conveyor belts (7) are installed opposite to each other on the front and rear sides of the frame (4); the lower grinding table (1), the upper grinding table (2) and the dust-proof sleeve (5) are all located between the two first conveyor belts (7); and the upper horizontal line of the dust-proof sleeve (5) is not higher than the upper horizontal conveying position of the first conveyor belt (7).

2. The polishing device for stone processing according to claim 1, characterized in that: A V-shaped scraper (121) is mounted on one side of the bottom of the connecting plate (12) via a telescopic adjustment rod. The V-shaped scraper (121) can be fitted and attached to the inner bottom of the dust plug plate (14), and a middle turning point of the V-shaped scraper (121) corresponds to the upper side of the air cylinder hole (141). The V-shaped scraper (121) scrapes dust from the bottom of the dust plug plate (14) into the air cylinder hole (141) as the connecting plate (12) rotates.

3. The polishing device for stone processing according to claim 2, characterized in that: The dust plug tray (14) is provided with a cleaning assembly (122) therein. The cleaning assembly (122) is mounted on the other side of the bottom of the connecting plate (12). The cleaning assembly (122) structure comprises a vertical plug rod (1221), a movable sleeve (1222), a rotating gear (1223) and a cleaning brush (1224). The top end of the vertical plug rod (1221) is screw-locked to one side of the bottom of the connecting plate (12). The movable sleeve (1222) The upper and lower movable sleeves are arranged on the lower side of the vertical insertion rod (1221), the cleaning brush (1224) is installed on the lower side of the rotating gear (1223), the bottom of the movable sleeve (1222) is locked and connected with the upper side of the rotating gear (1223), a return spring (1225) is arranged on the inner side of the movable sleeve (1222), and the upper side of the rotating gear (1223) is elastically connected with the bottom of the vertical insertion rod (1221) via the return spring (1225).

4. The polishing device for stone processing according to claim 3 is characterized in that: A plurality of mounting holes (15) are provided on the upper side of the fixing block (10); the lower side of the dust plug disc (14) is correspondingly locked on the mounting holes (15) by means of screws; a toothed ring (143) is fixedly provided at the middle of the inner side of the dust plug disc (14); the V-shaped scraper (121) and the toothed ring (143) are staggered in the upper and lower parts; and the toothed ring (143) is meshed with the rotating gear (1223) for transmission.

5. The polishing device for stone processing according to claim 1, characterized in that: A plurality of correction components (51) for pushing the outer periphery of the stone plate are arranged in an annular arrangement in the middle of the dustproof sleeve (5). The correction components (51) include a mounting base plate (511), an ejection telescopic rod (512) and a movable frame (513). The mounting base plate (511) is fixedly mounted on the outer periphery of the dustproof sleeve (5). The telescopic end of the ejection telescopic rod (512) faces one side of the dustproof sleeve (5) and is locked and mounted on the mounting base plate (511). The movable frame (513) is fixedly mounted on the telescopic end of the ejection telescopic rod (512). The movable frame (513) can perform linear reciprocating displacement from the outside of the dustproof sleeve (5) to the inside. A rubber roller (514) is rotatably mounted on the front end shaft of the movable frame (513) for rotating and tightening the outer side surface of the stone plate.

6. The polishing device for stone processing according to claim 5, characterized in that: A driven gear is fixedly arranged at the top shaft end of the rubber roller (514), and a rotating motor is installed inside the movable frame (513). A driving gear (515) meshing with the driven gear is installed at the shaft end of the rotating motor.

7. The polishing device for stone processing according to claim 1, characterized in that: Sliding guide rods (63) are vertically mounted on both sides of the outer frame (61), and both sides of the two mounting frames (3) are connected to the sliding guide rods (63) by sliding blocks so as to slide up and down.

8. The polishing device for stone processing according to claim 1, characterized in that: A second conveyor belt (8) and a telescopic push rod (9) are respectively mounted on the frame (4) below the two first conveyor belts (7), the telescopic end of the telescopic push rod (9) is arranged toward the second conveyor belt (8), and an arc-shaped push plate (91) is fixed to the telescopic end of the telescopic push rod (9), the lower horizontal line of the arc-shaped push plate (91) is higher than the upper horizontal conveying position of the second conveyor belt (8), and the upper horizontal line of the arc-shaped push plate (91) is lower than the lower horizontal line of the dust-proof sleeve (5).

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