Dustproof grinding machine for marble

Abstract

The invention discloses a dustproof marble grinding machine, belongs to the technical field of marble grinding, and aims to overcome the defects of a manual cleaning mode and the problems that the strength is difficult to control accurately during marble grinding, local over-grinding or under-grinding phenomena occur, the surface of marble is uneven, and the grinding quality is affected. A mounting frame is fixed to the side wall of the grinding machine body, a concentric-square-shaped base is mounted on the mounting frame, a U-shaped sliding base is slidably connected into the concentric-square-shaped base, a second motor is fixedly connected to the top face of the U-shaped sliding base, a rotating rod is fixedly connected to the output end of the second motor, and a grinding assembly is mounted at the bottom of the rotating rod. According to the marble polishing machine, the pressure of the polishing head is accurately controlled, excessive polishing or insufficient polishing is avoided, the surface flatness of marble is improved, the pothole defect is eliminated, the polishing area is completely covered and cleaned, dead corners are eliminated, the hidden danger of scratching of mud blocks and dust is reduced, the rework rate is reduced, and the operation quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of marble grinding, and particularly to a marble dust-proof grinding machine. Background Art

[0002] Marble is a natural stone with a smooth texture and rich colors. It is mainly formed by limestone through long-term geological processes. Marble has high compressive strength and wear resistance, so it is often used in fields such as architecture and sculpture. After laying marble, it is necessary to grind the surface of the marble, so a marble grinding machine is required.

[0003] Currently, during the process of grinding marble with a grinding machine, a large amount of dust is generated. When dealing with the dust, the water grinding process is mostly adopted. However, during the process of grinding with water added, as the water volume in the water tank changes dynamically, the overall gravity of the grinding machine is unbalanced, resulting in uneven pressure of the grinding head on the marble surface, forming local over-grinding or under-grinding, causing quality defects such as pitted and uneven surfaces and poor flatness. In addition, the cleaning of ground impurities before grinding mostly relies on manual operation, with low efficiency and it is difficult to remove hard cement blocks, dirt and other impurities in the dead corners. The residual impurities are extremely easy to scratch the marble surface during the grinding process, increasing the rework rate of subsequent grinding processes and seriously affecting the operation efficiency and the quality of the stone finished products.

[0004] In view of the above problems, a marble dust-proof grinding machine is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a marble dust-proof grinding machine. By using this device for work, it solves the problems in the above background that the manual cleaning method has low efficiency, is also prone to cleaning dead corners due to operation limitations, and it is difficult to accurately control the force during the grinding process, resulting in local over-grinding or under-grinding, causing the marble surface to be pitted and uneven and affecting the grinding quality.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A marble dust-proof grinding machine includes a grinding machine main body, a water tank is installed on the grinding machine main body, a gravity sensor is installed in the water tank, an installation frame is fixed on the side wall of the grinding machine main body, support feet are fixedly connected to both sides of the installation frame, grooves are opened in the support feet, limit sliders are slidably connected in the grooves, and a U-shaped base is fixedly connected to the end side of the limit sliders; A U-shaped slider is slidably connected inside the loop-shaped base. A U-shaped groove is formed on the U-shaped slider. A sheet-type pressure sensor is installed on the surface of the U-shaped groove. The top surface of the U-shaped slider is fixedly connected with a second motor. The output end of the second motor is fixedly connected with a rotating rod. A grinding assembly is installed at the bottom of the rotating rod. The grinding assembly includes a connecting column fixedly connected to the bottom surface of the rotating rod. A concave seat is fixedly installed on the connecting column. A grinding head is rotatably connected inside the concave seat. A cleaning assembly is installed on the U-shaped slider. The cleaning assembly includes a T-shaped circular groove formed on the bottom surface of the U-shaped slider. A limit clamping block is slidably connected inside the T-shaped circular groove. A rotating shaft is rotatably connected inside the limit clamping block. A scraper is slidably connected inside the rotating shaft.

[0007] Further, a vacuum suction cup is fixedly connected to the bottom of the support leg. A vacuum pump is fixedly connected to the side wall of the support leg. A connecting pipe is communicated between the vacuum pump and the vacuum suction cup.

[0008] Further, an L-shaped frame is fixedly connected to the mounting frame. An electric push column is fixedly connected to the L-shaped frame. The output end of the electric push column is fixedly connected with a piston rod. The bottom of the piston rod is fixedly connected with a U-shaped frame. The U-shaped frame is fixedly connected with the loop-shaped base.

[0009] Further, a first motor is fixedly connected to the side wall of the loop-shaped base. The output end of the first motor is fixedly connected with a reciprocating lead screw. The reciprocating lead screw is rotatably connected with the loop-shaped base. The U-shaped slider is threadedly connected with the reciprocating lead screw.

[0010] Further, an electromagnet one is fixedly connected to the bottom surface of the connecting column. The bottom of the electromagnet one is fixedly connected with a telescopic column. A first spring is sleeved on the telescopic column. The bottom surface of the telescopic column is fixedly connected with a permanent magnet one. The bottom surface of the permanent magnet one is fixedly connected with a brake pad one. A concave groove is formed on the top surface of the grinding head. The outer contour of the brake pad one matches the inner contour of the concave groove.

[0011] Further, a first gear is fixedly sleeved on the rotating shaft. A support shaft is fixedly connected to the bottom surface of the U-shaped slider. A toothed ring is fixedly connected to the support shaft. The toothed ring meshes with the first gear.

[0012] Further, a support column is fixedly connected to the bottom surface of the U-shaped slider. A second gear is rotatably connected to the rotating rod. The second gear is rotatably connected with the support column. A notch is formed on the rotating rod. An inner circular groove is formed on the top surface of the second gear. An electromagnet two is fixedly connected to the inner surface of the notch. The bottom of the electromagnet two is fixedly connected with a telescopic rod. A second spring is sleeved on the outer circle of the telescopic rod. The bottom surface of the telescopic rod is fixedly connected with a permanent magnet two. The electromagnet two and the permanent magnet two are elastically connected by the second spring. The bottom surface of the permanent magnet two is fixedly connected with a brake pad two. The brake pad two is in contact with the second gear.

[0013] Further, a cavity is formed inside the rotating shaft. An electromagnet three is fixedly connected to the inner top surface of the cavity. A spring three is fixedly connected to the bottom surface of the electromagnet three. The other end of the spring three is fixedly connected to a permanent magnet three. The bottom surface of the permanent magnet three is fixedly connected to the top surface of the scraping knife.

[0014] Further, a through groove is formed in the inner wall of the rotating shaft. The through groove is communicated with the cavity. An electromagnet four is fixedly connected to the inner wall of the through groove. A spring four is fixedly connected to the side of the electromagnet four. The side of the spring four is fixedly connected to a permanent magnet four. A support block is fixedly connected to the side wall of the permanent magnet four.

[0015] Further, the support blocks are symmetrically arranged about the axis of the scraping knife. Contact blocks are fixedly connected to both sides of the scraping knife. The contact blocks are in contact and fit with the support blocks.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The built-in gravity sensor can monitor the change of the water volume in the water tank in real time, and dynamically calculate the gravity balance value of the whole machine by combining with an intelligent algorithm. When the water volume fluctuation causes pressure imbalance, the system automatically drives the electric push rod to adjust the height of the U-shaped sliding seat, and through the real-time feedback of the chip pressure sensor, the pressure of the grinding head is accurately controlled within the error range, effectively avoiding the problems of local over-grinding or under-grinding caused by uneven gravity, improving the flatness of the surface of the marble after grinding, and eliminating the common pit defects in the traditional water grinding process; through the gear transmission and electromagnetic control structure, the scraping knife is driven to revolve around the grinding head while rotating, and with the horizontal movement of the reciprocating lead screw, the whole grinding area is covered for cleaning, eliminating the dead corners that are difficult to reach by manual cleaning, reducing the hidden danger of the residual mud blocks and dust scratching the surface of the marble during the grinding process, greatly reducing the rework rate of the subsequent grinding process, and improving the overall operation quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of some components of the whole of the present invention; Figure 3 is of the present invention Figure 2 bottom view structural schematic diagram; Figure 4 is the top view structural schematic diagram of the water tank of the present invention; Figure 5 is the structural schematic diagram of the grinding assembly and the cleaning assembly of the present invention; Figure 6 is the structural schematic diagram of the U-shaped sliding seat of the present invention; Figure 7 is of the present invention Figure 6Schematic diagram of the upward view structure; Figure 8 For the present invention Figure 6 Schematic diagram of the partial component structure of the cleaning component in; Figure 9 For the present invention Figure 6 Schematic diagram of the sectional structure; Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at position A in; Figure 11 For the present invention Figure 9 Schematic diagram of the enlarged structure at position B in; Figure 12 Schematic diagram of the sectional structure of the connection between the scraper and the rotating shaft of the present invention; Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged structure at position C in.

[0018] In the figure: 1. Grinding machine main body; 2. Water tank; 3. Gravity sensor; 4. Mounting frame; 5. Support feet; 51. Groove; 6. Vacuum suction cup; 61. Vacuum pump; 62. Connecting pipe; 7. Limit slider; 8. Return-shaped base; 81. L-shaped frame; 82. Electric push column; 83. Piston rod; 84. U-shaped frame; 9. First motor; 10. Reciprocating lead screw; 11. U-shaped sliding seat; 12. U-shaped groove; 13. Sheet-type pressure sensor; 14. Second motor; 15. Rotating rod; 151. Notch; 16. Grinding component; 161. Connecting column; 162. Concave seat; 163. Grinding head; 164. Concave groove; 165. Electromagnet 1; 166. Telescopic column; 167. Spring 1; 168. Permanent magnet 1; 169. Brake pad 1; 17. Cleaning component; 171. T-shaped circular groove; 172. Limit block; 173. Rotating shaft; 031. Support shaft; 032. Gear ring; 174. Gear 1; 175. Gear 2; 051. Support column; 176. Embedded circular groove; 177. Electromagnet 2; 178. Telescopic rod; 179. Spring 2; 091. Permanent magnet 2; 092. Brake pad 2; 18. Scraper; 180. Contact block; 181. Cavity; 182. Electromagnet 3; 183. Spring 3; 184. Permanent magnet 3; 185. Through groove; 186. Electromagnet 4; 187. Spring 4; 188. Permanent magnet 4; 189. Support block. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] To solve the technical problems in the traditional grinding process, such as the increase in the gravity of the grinding machine caused by adding water to prevent dust, the imbalance with the original gravity, and then the uneven pressure of the grinding head 163, the pitted surface of the marble, and the decline in grinding quality, as Figures 1-4 shown, the following preferred technical solutions are provided: A marble dust-proof grinding machine includes a grinding machine main body 1, a water tank 2 is installed on the grinding machine main body 1, a gravity sensor 3 is installed in the water tank 2, an installation frame 4 is fixed on the side wall of the grinding machine main body 1, two sides of the installation frame 4 are fixedly connected with supporting feet 5, a groove 51 is opened in the supporting feet 5, a limiting slider 7 is slidably connected in the groove 51, so that the U-shaped base 8 can stably slide along the direction of the groove 51 to realize displacement adjustment. The end side of the limiting slider 7 is fixedly connected with a U-shaped base 8. An L-shaped frame 81 is fixedly connected to the installation frame 4, and an electric push rod 82 is fixedly connected to the L-shaped frame 81. The L-shaped frame 81 provides a stable installation position for the electric push rod 82. The output end of the electric push rod 82 is fixedly connected with a piston rod 83, and the bottom of the piston rod 83 is fixedly connected with a U-shaped frame 84. The U-shaped frame 84 is fixedly connected with the U-shaped base 8. A U-shaped sliding seat 11 is slidably connected in the U-shaped base 8. A U-shaped groove 12 is opened on the U-shaped sliding seat 11, and a sheet-type pressure sensor 13 is installed on the surface of the U-shaped groove 12. This sensor can real-time sense the magnitude of the pressure applied during the grinding process and provide data support for accurately controlling the grinding force.

[0021] Specifically, in the grinding operation, in order to suppress the generation of dust, the water grinding treatment method of adding water is often adopted. However, as the grinding process continues, the continuous addition of water will increase the overall gravity of the grinding machine. Since the self-gravity of the grinding machine and the force-bearing situation of the grinding head 163 during operation change, the gravity balance between the two is broken, resulting in the pressure exerted by the grinding head 163 on the marble surface during operation unable to remain uniform. This uneven distribution of pressure directly leads to different grinding degrees of each part of the marble surface during the grinding process, and finally causes the surface of the marble to be pitted.

[0022] To solve the above problems, when using this grinding machine, first, the staff injects an appropriate amount of water into the water tank 2 according to the grinding requirements. After injection, the gravity sensor 3 real-time senses and monitors the weight of the water. The control end dynamically calculates the balance value of the self-gravity of the grinding machine and the gravity of the water tank 2 through the built-in calculation algorithm. As the grinding operation continues, the water volume in the water tank 2 gradually decreases, and the gravity sensor 3 synchronously monitors the weight change in real time. When it is detected that the water volume decreases to the critical value affecting the pressure balance of the grinding machine, an electric signal is immediately transmitted to the electric push rod 82.

[0023] After the electric push rod 82 receives the signal, it drives the U-shaped frame 84 below the piston rod 83 to move downward. Since the U-shaped frame 84 is fixedly connected to the loop-shaped base 8, and the limit blocks on both sides of the loop-shaped base 8 are in a sliding connection structure with the grooves 51 in the support feet 5, when the U-shaped frame 84 moves downward, it will drive the loop-shaped base 8 to slide downward synchronously, and the limit blocks slide along the grooves 51 of the support feet 5 for guiding. As the loop-shaped base 8 moves downward, the U-shaped slide seat 11 slidably connected to it moves accordingly. At this time, the sheet pressure sensor 13 in the U-shaped base senses the pressure change in real time and feeds the data back to the control end. The control end adjusts the thrust of the electric push rod 82 in real time according to the feedback information, so as to dynamically adjust the force exerted by the grinding head 163 below the U-shaped slide seat 11 on the marble surface, further ensuring that there will be no phenomenon of over-grinding in some areas and incomplete grinding in some areas during the grinding of the grinding head 163, making the grinding more uniform.

[0024] Through this design, the gravity imbalance caused by the change in the water volume of the water tank 2 can be matched, avoiding the problem of uneven pressure of the grinding head 163 caused by the decrease or increase of the water volume, effectively preventing the situation of local over-grinding or under-grinding on the marble surface, improving the grinding uniformity, reducing quality defects such as pits and protrusions, and finally realizing the improvement of the grinding quality.

[0025] In order to solve the technical problems of low efficiency, easy to leave dead corners, and scratches on the surface caused by impurity residues when manually cleaning hard cement blocks, soil blocks and other impurities on the ground before marble grinding, as Figures 1-3 , Figures 5-13 shown, the following preferred technical solutions are provided: A marble dust-proof grinding machine, the bottom of the support foot 5 is fixedly connected with a vacuum suction cup 6, the side wall of the support foot 5 is fixedly connected with a vacuum pump 61, and a connecting pipe 62 is connected between the vacuum pump 61 and the vacuum suction cup 6. The connecting pipe 62 is made of a pressure-resistant hose to avoid air leakage caused by equipment movement.

[0026] The side wall of the loop-shaped base 8 is fixedly connected with a first motor 9, the output end of the first motor 9 is fixedly connected with a reciprocating lead screw 10, the reciprocating lead screw 10 is rotatably connected with the loop-shaped base 8, and the U-shaped slide seat 11 is threadedly connected with the reciprocating lead screw 10.

[0027] On the top surface of the U-shaped sliding seat 11, a second motor 14 is fixedly connected. The output end of the second motor 14 is fixedly connected with a rotating rod 15. At the bottom of the rotating rod 15, a grinding assembly 16 is installed. The grinding assembly 16 includes a connecting column 161 fixedly connected to the bottom surface of the rotating rod 15. On the connecting column 161, a concave seat 162 is fixedly installed. Inside the concave seat 162, a grinding head 163 is rotatably connected. At the bottom surface of the connecting column 161, an electromagnet 165 is fixedly connected. At the bottom of the electromagnet 165, a telescopic column 166 is fixedly connected. A first spring 167 is sleeved on the telescopic column 166. At the bottom surface of the telescopic column 166, a permanent magnet 168 is fixedly connected. At the bottom surface of the permanent magnet 168, a first brake pad 169 is fixedly connected. The first brake pad 169 is elastically connected to the electromagnet 165 through the first spring 167. A concave groove 164 is formed on the top surface of the grinding head 163. The outer contour of the first brake pad 169 matches the inner contour of the concave groove 164. A first gear 174 is fixedly sleeved on the rotating shaft 173. At the bottom surface of the U-shaped sliding seat 11, a support shaft 031 is fixedly connected. On the support shaft 031, a gear ring 032 is fixedly connected. The gear ring 032 meshes with the first gear 174.

[0028] A cleaning assembly 17 is installed on the U-shaped sliding seat 11. The cleaning assembly 17 includes a T-shaped circular groove 171 formed on the bottom surface of the U-shaped sliding seat 11. Inside the T-shaped circular groove 171, a limit block 172 is slidably connected. Inside the limit block 172, a rotating shaft 173 is rotatably connected. Inside the rotating shaft 173, a scraper 18 is slidably connected.

[0029] At the bottom surface of the U-shaped sliding seat 11, a support column 051 is fixedly connected. A second gear 175 is rotatably connected to the rotating rod 15. The second gear 175 is rotatably connected to the support column 051. A notch 151 is formed on the rotating rod 15. An inner circular groove 176 is formed on the top surface of the second gear 175. An electromagnet 177 is fixedly connected to the inner surface of the notch 151. At the bottom of the electromagnet 177, a telescopic rod 178 is fixedly connected. A second spring 179 is sleeved on the outer circle of the telescopic rod 178. At the bottom of the telescopic rod 178, a permanent magnet 091 is fixedly connected. The electromagnet 177 is elastically connected to the permanent magnet 091 through the second spring 179. At the bottom surface of the permanent magnet 091, a second brake pad 092 is fixedly connected. The second brake pad 092 is in contact with the second gear 175.

[0030] A cavity 181 is provided inside the rotating shaft 173. An electromagnet three 182 is fixedly connected to the inner top surface of the cavity 181. A spring three 183 is fixedly connected to the bottom surface of the electromagnet three 182. The other end of the spring three 183 is fixedly connected to a permanent magnet three 184. The bottom surface of the permanent magnet three 184 is fixedly connected to the top surface of the scraper 18. A through groove 185 is provided on the inner wall of the rotating shaft 173. The through groove 185 communicates with the cavity 181. An electromagnet four 186 is fixedly connected to the inner wall of the through groove 185. A spring four 187 is fixedly connected to the end side of the electromagnet four 186. The end side of the spring four 187 is fixedly connected to a permanent magnet four 188. A support block 189 is fixedly connected to the side wall of the permanent magnet four 188. The support blocks 189 are symmetrically arranged about the axis of the scraper 18. Contact blocks 180 are fixedly connected to both sides of the scraper 18. The contact blocks 180 are in contact and fit with the support blocks 189.

[0031] Specifically, as Figure 9 and Figure 10 shown, in the initial state, the electromagnet two 177 is in the energized state. After the electromagnet two 177 is energized, it will generate a repulsive force on the permanent magnet two 091. Under the action of this repulsive force, the permanent magnet two 091 moves downward. Since the permanent magnet two 091 and another permanent magnet two 091 are elastically connected by a spring two 179 and a telescopic rod 178, during the downward movement of the permanent magnet two 091, the spring two 179 will be stretched, prompting the telescopic rod 178 to extend. At the same time, the brake pad two 092 on the bottom surface of the permanent magnet two 091 moves downward synchronously and enters the embedded circular groove 176. As the electromagnet two 177 continues to be energized, when the brake pad two 092 on the bottom surface of the permanent magnet two 091 moves downward to fit with the surface of the embedded circular groove 176 of the gear two 175, a stop structure is formed between the two, making the gear two 175 and the rotating rod 15 a whole. At this time, the gear two 175 will move with the rotating rod 15.

[0032] As Figure 9 and Figure 11 shown, in the initial state, the electromagnet is in the power-off state, and the spring one 167 is in a telescopic state. At this time, the brake pad one 169 at the bottom of the spring one 167 does not contact the concave groove 164 of the grinding head 163, and the relative restriction between the grinding head 163 and the concave seat 162 is released, and the concave seat 162 can rotate around the grinding head 163.

[0033] As Figure 9 and Figure 12 shown, both the electromagnet three 182 and the electromagnet four 186 are in the power-off state, the spring three 183 is in a stretched state, the scraper 18 at the bottom of the spring three 183 is in contact with the marble surface, and the spring four 187 connected to the electromagnet four 186 drives the support block 189 at the end side to extend outwards. At this time, the contact block 180 is clamped between the two support blocks 189, playing a role of resisting and limiting the scraper 18, effectively preventing the scraper 18 from shaking back and forth during subsequent cleaning, and avoiding affecting the cleaning effect.

[0034] When preparing for the grinding work, the staff first push the grinding machine into the area to be ground, and then start the vacuum pump 61. After the vacuum pump 61 is started, the air in the vacuum chuck 6 will be pumped out, so that the vacuum chuck 6 is tightly adsorbed to the marble surface, thereby firmly fixing the grinding machine on the marble surface.

[0035] Before grinding, it is necessary to clean the dust and mud on the marble surface first. Since the second gear 175 and the rotating rod 15 are locked as a whole in the initial state, and the grinding head 163 and the concave seat 162 are in a state of releasing relative restriction and being rotatable. Therefore, during the cleaning, referring to Figures 5-9 , start the second motor 14 to drive the rotating rod 15 to rotate in the U-shaped sliding seat 11. As the rotating rod 15 rotates, the second gear 175 locked with it as a whole will synchronously rotate around the support column 051. Also, because the first gear 174 and the second gear 175 are meshed with each other, under the action of gear meshing, the first gear 174 will rotate synchronously with the second gear 175. When the first gear 174 rotates, as Figure 9 shown, since the first gear 174 is fixedly connected to the rotating shaft 173, and the rotating shaft 173 is rotatably connected to the limit block 172, when the first gear 174 is subjected to the meshing force, it will rotate self in the limit block 172. At the same time, the limit block 172 is slidably embedded in the T-shaped circular groove 171, the support shaft 031 is fixedly connected to the U-shaped sliding seat 11, the tooth ring 032 is fixedly connected to the support shaft 031, and the tooth ring 032 is also meshed with the first gear 174. Therefore, when the first gear 174 drives the rotating shaft 173 to rotate self, it will also be meshed with the tooth ring 032, thereby driving the rotating shaft 173 and the limit block to move in a circular motion along the T-shaped circular groove 171, so that the rotating shaft 173 revolves around the grinding head 163, enabling the scraper 18 at the bottom of the rotating shaft 173 to clean the marble surface clean.

[0036] Combined with Figures 2-3 and Figure 5 It can be seen that during the cleaning process, start the first motor 9 to drive the reciprocating lead screw 10 to rotate. As the reciprocating lead screw 10 continues to rotate, the U-shaped sliding seat 11 threadedly installed with it will drive the cleaning component 17 and the grinding component 16 at the bottom to move horizontally. The U-shaped sliding seat 11 is pushed forward, thereby driving the scraper to comprehensively clean the fixed grinding area. Moreover, as the scraper continuously moves for cleaning, the rotating rod 15 will also move synchronously, driving the grinding head 163 rotatably installed with it to move horizontally along the marble surface, so that the grinding head 163 can move along the marble surface after being scraped and cleaned by the scraper 18, pushing the scraped and cleaned dust and mud blocks to both sides. The staff can sweep and clean these dust and mud blocks. In this way, it also avoids that during subsequent grinding, the remaining mud blocks are carried by the grinding head 163 and rub against the marble surface, thereby reducing the wear of the marble surface.

[0037] When the cleaning work is completed and preparation for polishing is to be carried out, energize the electromagnet four 186. As Figure 12 shown, after the electromagnet four 186 is energized, it will generate an attractive force on the permanent magnet four 188, causing the permanent magnet four 188 to slide into the through groove 185 and compress the spring four 187, resulting in the support block 189 on the end side of the permanent magnet four 188 sliding into the through groove 185. When the support block 189 is completely slid in, the support restriction on the abutting block 180 is released. Then, energize the electromagnet three 182. When the electromagnet three 182 is energized, it will generate an attractive force on the permanent magnet three 184. The permanent magnet three 184 moves upward under the action of the attractive force. As the permanent magnet three 184 moves upward, the scraper 18 at its bottom also moves upward synchronously and compresses the spring three 183, causing the scraper 18 to be separated from the ground, avoiding damage to the marble surface caused by the scraper 18 always sliding along the marble surface during the subsequent polishing process.

[0038] Subsequently, as Figure 10 shown, de-energize the electromagnet two 177. As the electromagnet two 177 is de-energized, the permanent magnet loses the repulsive force. Under the elastic action of the spring two 179, the telescopic rod 178 is driven to retract. The permanent magnet two 091 and the brake pad two 092 at the bottom of the telescopic rod 178 move upward synchronously and disengage from the gear two 175, releasing the relative restriction between the gear two 175 and the rotating rod 15. At this time, the rotating rod 15 can rotate within the gear two 175.

[0039] Immediately afterwards, as Figure 11 shown, energize the electromagnet one 165. After the electromagnet one 165 is energized, it generates a repulsive force on the permanent magnet one 168. The permanent magnet one 168 drives the brake pad one 169 to move downward under the action of the repulsive force. At the same time, the telescopic column 166 and the spring one 167 are stretched. When the brake pad one 169 moves downward to fit the surface of the concave groove 164 of the grinding head 163, the outer wall of the brake pad one 169 fits the inner wall of the concave groove 164, and the bottom wall of the brake pad two 092 fits the top surface of the concave groove 164 of the grinding head 163, making the grinding head 163 and the concave seat 162 locked as a whole. At this time, the grinding head 163 can rotate synchronously with the concave seat 162, and with the help of the frictional force on both sides of the brake pad two 092, the grinding head 163 is firmly connected to the concave seat 162, avoiding slipping of the grinding head 163 during grinding and affecting the grinding effect of the marble surface.

[0040] As Figure 9As shown in the figure, the second motor 14 is then started to drive the rotary rod 15 to rotate. The connecting column 161 fixedly connected thereto will synchronously drive the concave seat 162 and the grinding head 163 to rotate, so that the grinding head 163 rotates and grinds along the marble surface. During the grinding process, since the first motor 9 drives the reciprocating lead screw 10 to rotate, the U-shaped sliding seat 11 is converted into a horizontal movement under the rotation of the reciprocating lead screw 10, and then the grinding head 163 at the bottom of the U-shaped sliding seat 11 is pushed to move horizontally, so as to comprehensively grind the fixed area of the supporting feet 5. This not only improves the grinding efficiency, but also enhances the uniformity of marble grinding.

[0041] When the grinding of this area is completed, the vacuum pump 61 is turned off to release the suction of the vacuum chuck 6 from the marble surface. Then, the grinding machine is controlled to move to the next area, and the above steps are repeated for grinding again. And so on until all the grinding work is completed.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marble dust-proof grinding machine, comprising a grinding machine main body (1), characterized in that: A water tank (2) is installed on the grinding machine main body (1). A gravity sensor (3) is installed in the water tank (2). A mounting frame (4) is fixed to the side wall of the grinding machine main body (1). Support feet (5) are fixedly connected to both sides of the mounting frame (4). A groove (51) is formed in the support feet (5). A limit slider (7) is slidably connected in the groove (51). A return base (8) is fixedly connected to the end side of the limit slider (7). A U-shaped sliding seat (11) is slidably connected in the return base (8). A U-shaped groove (12) is formed in the U-shaped sliding seat (11). A sheet pressure sensor (13) is installed on the surface of the U-shaped groove (12). A second motor (14) is fixedly connected to the top surface of the U-shaped sliding seat (11). A rotating rod (15) is fixedly connected to the output end of the second motor (14). A grinding assembly (16) is installed at the bottom of the rotating rod (15). The grinding assembly (16) includes a connecting column (161) fixedly connected to the bottom surface of the rotating rod (15). A concave seat (162) is fixedly installed on the connecting column (161). A grinding head (163) is rotatably connected in the concave seat (162). A cleaning assembly (17) is installed on the U-shaped sliding seat (11). The cleaning assembly (17) includes a T-shaped circular groove (171) formed in the bottom surface of the U-shaped sliding seat (11). A limit block (172) is slidably connected in the T-shaped circular groove (171). A rotating shaft (173) is rotatably connected in the limit block (172). A scraping knife (18) is slidably connected in the rotating shaft (173).

2. The marble dust-proof grinding machine according to claim 1, characterized in that: A vacuum chuck (6) is fixedly connected to the bottom of the support feet (5). A vacuum pump (61) is fixedly connected to the side wall of the support feet (5). A connecting pipe (62) is communicated between the vacuum pump (61) and the vacuum chuck (6).

3. The marble dust-proof grinding machine according to claim 1, characterized in that: An L-shaped frame (81) is fixedly connected to the mounting frame (4). An electric push column (82) is fixedly connected to the L-shaped frame (81). A piston rod (83) is fixedly connected to the output end of the electric push column (82). A U-shaped frame (84) is fixedly connected to the bottom of the piston rod (83). The U-shaped frame (84) is fixedly connected to the return base (8).

4. A marble dust-proof grinding machine according to claim 1, characterized in that: A first motor (9) is fixedly connected to the side wall of the return base (8). A reciprocating lead screw (10) is fixedly connected to the output end of the first motor (9). The reciprocating lead screw (10) is rotatably connected to the return base (8). The U-shaped sliding seat (11) is threadedly connected to the reciprocating lead screw (10).

5. A marble dust-proof grinding machine according to claim 1, characterized in that: An electromagnet one (165) is fixedly connected to the bottom surface of the connecting column (161). A telescopic column (166) is fixedly connected to the bottom of the electromagnet one (165). A spring one (167) is sleeved on the telescopic column (166). A permanent magnet one (168) is fixedly connected to the bottom surface of the telescopic column (166). A brake pad one (169) is fixedly connected to the bottom surface of the permanent magnet one (168). A recessed groove (164) is formed in the top surface of the grinding head (163). The outer contour of the brake pad one (169) matches the inner contour of the recessed groove (164).

6. The marble dust-proof grinding machine according to claim 5, characterized in that: A first gear (174) is fixedly sleeved on the rotating shaft (173). A support shaft (031) is fixedly connected to the bottom surface of the U-shaped sliding seat (11). A toothed ring (032) is fixedly connected to the support shaft (031). The toothed ring (032) meshes with the first gear (174).

7. A marble dust-proof grinding machine according to claim 6, characterized in that: A support column (051) is fixedly connected to the bottom surface of the U-shaped sliding seat (11). A second gear (175) is rotatably connected to the rotating rod (15). The second gear (175) is rotatably connected to the support column (051). A notch (151) is formed in the rotating rod (15). An embedded circular groove (176) is formed in the top surface of the second gear (175). An electromagnet two (177) is fixedly connected to the inner surface of the notch (151). A telescopic rod (178) is fixedly connected to the bottom surface of the electromagnet two (177). A second spring (179) is sleeved on the outer ring of the telescopic rod (178). A second permanent magnet (091) is fixedly connected to the bottom surface of the telescopic rod (178). The electromagnet two (177) and the second permanent magnet (091) are elastically connected by the second spring (179). A second brake pad (092) is fixedly connected to the bottom surface of the second permanent magnet (091). The second brake pad (092) is in contact with the second gear (175).

8. The marble dust-proof grinding machine according to claim 1, wherein: A cavity (181) is formed in the rotating shaft (173). An electromagnet three (182) is fixedly connected to the inner top surface of the cavity (181). A third spring (183) is fixedly connected to the bottom surface of the electromagnet three (182). The other end of the third spring (183) is fixedly connected to a third permanent magnet (184). The bottom surface of the third permanent magnet (184) is fixedly connected to the top surface of the scraper (18).

9. The marble dust-proof grinding machine according to claim 8, characterized in that: A through groove (185) is formed in the inner wall of the rotating shaft (173). The through groove (185) communicates with the cavity (181). An electromagnet four (186) is fixedly connected to the inner wall of the through groove (185). A fourth spring (187) is fixedly connected to the end side of the electromagnet four (186). A fourth permanent magnet (188) is fixedly connected to the end side of the fourth spring (187). A support block (189) is fixedly connected to the side wall of the fourth permanent magnet (188).

10. A marble dust-proof grinding machine according to claim 9, characterized in that: The support blocks (189) are symmetrically arranged about the axis of the scraper (18). Contact blocks (180) are fixedly connected to both sides of the scraper (18). The contact blocks (180) are in contact with and fit against the support blocks (189).

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