A kind of grinding brush specially used for quartz stone and its manufacturing process

Abstract

The invention discloses a special grinding brush for quartz stone and a manufacturing process thereof, comprising a base, wherein a bristle group is arranged on the bottom surface of the base, and the bristles in the bristle group have at least two different diameters; the bristle group comprises a plurality of first bristle groups and a plurality of second bristle groups, and there is a height difference between the bristles of the first bristle group and the bristles of the adjacent second bristle groups. The invention provides a special grinding brush for quartz stone which has a concave-convex effect after polishing, high clarity and an antique effect, and a manufacturing process thereof.

Description

Technical Field

[0001] The invention relates to the technical field of grinding brushes, in particular to a special grinding brush for quartz stone and a manufacturing process thereof. Background Art

[0002] In the decoration industry, various glazed tiles, antique tiles, stones and other materials with concave and convex effects are often used, and the quality requirements for their surfaces are usually to be as smooth as possible while maintaining the concave and convex properties, so as to meet the user's requirements for easy cleaning, silky surface, texture, soft touch, and beautiful decorative effects. This surface effect is usually achieved by polishing with an integral grinding block. According to the prior art, there is an artificial quartz slab grinder, a grinding head and a grinding brush. A plurality of bristles are arranged on the bottom surface of the grinding brush, and the lower end of the bristles is lower than the bottom of the grinding disc. There is a height difference between these bristles. Due to the height difference between the bristles of the grinding brush, the surface of the artificial quartz slab can be polished into an uneven hemp surface, but the clarity is low and it does not have an antique effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above prior art and provide a special grinding brush for quartz stone which has a concave-convex effect and high clarity after polishing and has an antique effect, and a manufacturing process thereof.

[0004] In order to achieve the above object, the technical solution of the present invention is: a quartz stone special grinding brush, comprising a base, the bottom surface of the base is provided with a bristle group, the bristles in the bristle group have at least two different diameters;

[0005] The bristle group comprises a plurality of first bristle groups and a plurality of second bristle groups, and there is a height difference between the bristles of the first bristle group and the bristles of the adjacent second bristle group.

[0006] After adopting the above structure, the present invention has the following advantages compared with the prior art: a bristle group is arranged on the bottom surface of the base, and the bristle group includes at least two bristles of different diameters, so that clear patterns are formed on the quartz stone plate after polishing, and the clarity is high, which can clearly show the antique effect of the crystallization of quartz particles. Specifically, the bristle group includes multiple rows of first bristle groups and multiple rows of second bristle groups, and there is a height difference between the bristles of the first bristle group and the bristles of the adjacent second bristle group, so that after polishing, there is a concave-convex effect, and the glossiness can reach about 15 degrees, the antique effect is good, and the visual effect is soft.

[0007] Preferably, the bristles of the first bristle group are distributed in rows along the length direction of the base, and the bristles of the second bristle group are distributed in rows along the length direction of the base, with orderly arrangement and clear texture.

[0008] Preferably, the first bristle group and the second bristle group are alternately distributed and parallel to each other, arranged in an orderly manner, and have a compact texture.

[0009] Preferably, the bristles of the first bristle group are staggered with the bristles of the adjacent second bristle group to ensure that clear lines are formed on the quartz stone plate after polishing.

[0010] Preferably, the line connecting the projections of the lower ends of the bristles of the bristle group in the width direction of the base is an arc with an opening upward, which can fit the rotation and swing of the grinding disc of the grinder and achieve a good polishing effect.

[0011] Preferably, the bristle particle size of the bristle group is 24#-1500#, ensuring the concave-convex effect and antique effect.

[0012] Preferably, the first bristle group includes a plurality of coarse bristles and a plurality of medium bristles, and the plurality of coarse bristles and the plurality of medium bristles are alternately distributed with clear textures.

[0013] Preferably, the second bristle group includes a plurality of fine bristles, which can clearly display the antique effect of crystallized quartz particles.

[0014] Preferably, it further comprises a base, the first bristle group and the second bristle group are both fixed on the bottom surface of the base, and the upper end of the base is clamped on the bottom of the base for easy installation and removal.

[0015] Preferably, the upper surface of the base is provided with a groove, and the inner side walls of the groove are provided with clamping grooves;

[0016] The bottom surface of the base is provided with a protrusion, and the side surface of the protrusion is provided with a clamping block;

[0017] When the base body is clamped with the base, the protrusion is clamped in the groove and the clamping block is clamped in the clamping slot, and the structure is simple.

[0018] A manufacturing process of a special grinding brush for quartz stone, comprising any one of the special grinding brushes for quartz stone described above, and comprising the following components by weight:

[0019] Silicon carbide: 20% to 30%;

[0020] Diamond: 15% to 25%;

[0021] Alumina: 5% to 8%;

[0022] Nylon compound: 10% to 20%;

[0023] Nylon: 20%~30%;

[0024] Additives: 0.5%~2%;

[0025] Toughening agent: 15% to 25%;

[0026] The manufacturing process includes the following steps:

[0027] Step 1: Dehydrating nylon, additives and toughening agents respectively;

[0028] Step 2: Weigh the nylon, additives and toughening agents in step 1 according to the formula, and perform modification and granulation by mixing;

[0029] Step 3: dehydrating and crushing the modified mixture in step 2 to obtain particles;

[0030] Step 4: Drying the silicon carbide, diamond, aluminum oxide and nylon composite respectively;

[0031] Step 5: Weigh the silicon carbide, diamond, aluminum oxide and nylon compound in step 4 according to the formula, and place them in a mixer with the particles obtained in step 3 to mix evenly;

[0032] Step 6: Screen the mixed materials to prevent agglomeration;

[0033] Step 7: The material screened in step 6 is subjected to fusion modification and granulation by mixing;

[0034] Step 8: Put the material obtained in step 7 into the mold and form it under high temperature and high pressure;

[0035] Step 9: Remove the bristles from the mold and stabilize them;

[0036] Step 10: Trim the appearance of the processed bristles and glue them to the corresponding base.

[0037] Preferably, in step 2, the modification and granulation process is as follows: nylon, additives and toughening agents are put into a reactor for mixing and heating to 240°C to 260°C, heating and heat preservation are stopped, and the mixture is stirred evenly for 2h to 3h, and finally extruded, cooled and granulated.

[0038] Preferably, the particle size of the particles obtained in step three is 80# to 120#.

[0039] Preferably, in step seven, the modification and granulation process is as follows: the material screened in step six is ​​added to the twin-screw extruder through the main feed port at a constant speed and a quantitative manner, the heating temperature is controlled at 230-250° C., the screw speed is controlled at 500-590 rpm, and after melting, the mixture is extruded and granulated to obtain mixture particles.

[0040] Preferably, the stabilization treatment refers to storing it in a constant temperature environment of 75°C to 85°C for at least 48 hours, and using it only after its performance is stabilized, so as to stabilize its performance.

[0041] Compared with the prior art, the present invention has the following advantages: nylon, additives and toughening agents are added to silicon carbide, diamond, aluminum oxide and nylon composites, so that the produced bristles have good strength and durability; the components are dehydrated to facilitate subsequent modification and granulation; nylon, additives and toughening agents are first mixed together for modification and granulation to form particles, and then silicon carbide, diamond and nylon composites are mixed with these particles for modification and granulation, so that the silicon carbide, diamond and nylon composites are mixed with these particles more evenly. When the bristles produced by this process are used to polish quartz slabs, the glossiness can reach about 15°, which is soft but not shiny, has texture and three-dimensional sense, and can better reflect the original texture and color of the material. The prior art cannot meet this requirement. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The present invention is a bottom view of a first embodiment of a special grinding brush for quartz stone.

[0043] Figure 2 The utility model is a stereoscopic diagram of a special grinding brush for quartz stone of the present invention.

[0044] Figure 3 It is a left sectional view of a special grinding brush for quartz stone of the present invention.

[0045] Figure 4 The utility model is a stereoscopic diagram of a special grinding brush base for quartz stone of the present invention.

[0046] Figure 5 The utility model is a left side cross-sectional view of a quartz stone special grinding brush base body of the present invention.

[0047] Figure 6 The utility model is a stereoscopic diagram of a quartz stone special grinding brush base of the present invention.

[0048] Figure 7 The utility model is a left sectional view of a quartz stone special grinding brush base of the present invention.

[0049] Figure 8 The present invention is a bottom view of a second embodiment of a special grinding brush for quartz stone.

[0050] Fig. 9 This is a rendering of polishing a quartz stone slab using an existing grinding brush.

[0051] Fig.10 The present invention is a diagram showing the effect of a quartz stone plate being polished by a special quartz stone grinding brush.

[0052] Among them, 1. base, 2. coarse bristles, 3. fine bristles, 4. base, 5. groove, 6. slot, 7. protrusion, 8. block, 9. first bristle group, 10. second bristle group, 11. stopper, 12. reinforcement block, 13. limiting groove, 14. partition block, 15. protrusion, 16. medium bristles. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] like Figure 1 and 2 As shown, the present invention provides a special grinding brush for quartz stone, including a base 1, a bristle group is arranged on the bottom surface of the base 1, and in order to form lines on the quartz stone plate, the bristle group includes bristles of various diameters. Specifically, the bristle group includes multiple rows of first bristle groups 9 and multiple rows of second bristle groups 10. In order to ensure clarity and glossiness, the bristles of the first bristle group 9 are distributed along the length direction of the base 1 to form rows, and the bristles of the second bristle group 10 are distributed along the length direction of the base 1 to form rows. In order to make the lines of the quartz stone plate clearer, the first bristle group 9 and the second bristle group 10 are alternately distributed and parallel to each other. In order to make the quartz stone plate have a concave-convex effect, there is a height difference between the bristles of the first bristle group 9 and the bristles of the second bristle group 9 adjacent thereto. Specifically, the heights of the bristles of the first bristle group 9 in the same row are consistent, and the heights of the bristles of the second bristle group 10 in the same row are consistent.

[0055] As an example, Figure 1 In order to ensure that the lines are clearer, tighter and more delicate, the bristles of the first bristle group 9 and the bristles of the adjacent second bristle group 10 are staggered with each other.

[0056] As an example, Figure 3 and 5 The line between the projections of the ends of the bristles of the bristle group in the width direction of the base 1 is an arc, and the arc opening is upward. Specifically, the base 1 with bristles is installed on the swing rod of the grinder, and the swing trajectory of the swing rod fits the arc, so the grinding is clearer.

[0057] As an embodiment, in order to ensure the polishing effect, the bristle particle sizes of the bristle group are all 24# to 1500#, preferably 24#, 7000# and 1500#.

[0058] Embodiment 1, as Figure 1 The first bristle group 9 includes a plurality of thick bristles 2 and a plurality of medium bristles 16, and the plurality of thick bristles 2 and the plurality of medium bristles 16 are alternately distributed. Correspondingly, the second bristle group 10 includes a plurality of thin bristles 3. The diameter of the medium bristles 16 is smaller than the diameter of the thick bristles 2 and the diameter of the medium bristles 16 is larger than the diameter of the thin bristles 3.

[0059] Embodiment 2, as Figure 8 The first bristle group 9 includes a plurality of coarse bristles 2 and a plurality of thin bristles 3 , and correspondingly, the second bristle group 10 includes a plurality of thin bristles 3 .

[0060] Specifically, the diameter of the thick bristles 2 is 3.5-4.5 mm, preferably 3.5, 4 and 4.5 mm; the diameter of the medium bristles 16 is 1.5-2.5 mm, preferably 1.5, 2 and 2.5 mm; the diameter of the thin bristles 3 is 1-2 mm, preferably 1, 1.5 and 2 mm. In order to extend the service life of the bristles and reduce the impact of the bristles on the base 1, the diameter of the bristles decreases from the end close to the base 1 to the end away from the base 1. The diameter of the bristles is the diameter of the end of the bristles away from the base 1. Specifically, when the diameter of the coarse bristles 2 at one end away from the base 1 is 4 mm, the diameter of the coarse bristles 2 at one end close to the base 1 is 5 mm; when the diameter of the medium bristles 16 at one end away from the base 1 is 2 mm, the diameter of the medium bristles 16 at one end close to the base 1 is 3 mm; when the diameter of the thin bristles 3 at one end away from the base 1 is 1.5 mm, the diameter of the thin bristles 3 at one end close to the base 1 is 2.5 mm.

[0061] As an example, Figure 3 , 4 , 5, 6 and 7, in order to facilitate installation and disassembly, a base 4 is provided, the bristle group is provided on the bottom surface of the base 4, and the upper surface of the base 4 is clamped with the base 1. Specifically, a groove 5 is provided on the upper surface of the base 4, and both inner side walls of the groove 5 are provided with a clamping groove 6. Correspondingly, a protrusion 7 is provided on the bottom surface of the base 1, and a clamping block 8 is provided on the side of the protrusion 7. When the protrusion 7 is clamped in the groove 5, the clamping block 8 is clamped in the clamping groove 6. Specifically, the protrusion 7 and the clamping block 8 are integrally formed and are integrated. Specifically, the clamping block 8 is provided on the side of the lower end of the protrusion 7 so that the cross-sectional shape between the protrusion 7 and the clamping block 8 is L-shaped. Specifically, in order to increase the connection strength between the base 4 and the base 1, two blocks 11 are provided in the groove 5, and the blocks 11 are provided along the length direction of the groove 5. The blocks 11 are provided near the slot 6. Accordingly, the number of the protrusions 7 is two, and the blocks 8 correspond to the protrusions 7 one by one. The protrusions 7 are stuck between the baffle 11 and the inner side wall of the groove 5, and the blocks 8 are stuck in the slot 6. Specifically, in order to prevent the blocks 8 from falling off from the slot 6, a reinforcing block 12 is provided between the block 11 and the inner side wall of the groove 5 near the block 11. Accordingly, a limiting groove 13 corresponding to the reinforcing block 12 is provided on the protrusion 7, and the reinforcing block 12 is stuck in the limiting groove 13 when the protrusion 7 is stuck in the groove 5. Specifically, the number of the reinforcing blocks 12 is three. Specifically, in order to strengthen the strength of the base 4, a partition block 14 is provided in the groove 5, and the partition block 14 is arranged between the two stoppers 11. Correspondingly, a protrusion 15 is also provided on the bottom surface of the base 1, and the protrusion 15 is located between the two protrusions 7. The protrusion 15 is respectively stuck between the partition block and the stopper 11.

[0062] Specifically, the principle of the present invention is to arrange a bristle group on the bottom surface of the base 1, and the bristle group includes bristles of various diameters, so that clear patterns are formed on the quartz stone plate after polishing, and the clarity is high, which can clearly show the antique effect of the crystallization of quartz particles. Specifically, the bristle group includes multiple rows of first bristle groups 9 and multiple rows of second bristle groups 10. At the same time, the first bristle groups 9 and the second bristle groups 10 are alternately distributed and parallel to each other, and there is a height difference between the bristles of the first bristle group 9 and the bristles of the adjacent second bristle group 10. In this way, after polishing, there is a concave-convex effect, the glossiness can reach about 15 degrees, and the antique effect is good.

[0063] The upper surface of the base 1 is provided with a wedge-shaped boss for easy installation on a grinding machine.

[0064] The coarse bristles 2, the fine bristles 3 and the medium bristles 16 are rotated and pressurized to contact the surface of the quartz stone for grinding and polishing. Due to the hardness and different particle sizes of the synthetic stone slab, the soft and small parts become concave and the hard and coarse parts become convex after grinding. The coarse bristles 2, the fine bristles 3 and the medium bristles 16 are arranged in an orderly manner and the length of the first bristle group 9 and the second bristle group 10 are orderly changed. After grinding and polishing, the artificial synthetic quartz stone can reach a glossiness of about 15 degrees, with a concave-convex effect, soft visual effect, and can clearly show the antique effect of quartz particle crystallization.

[0065] A special grinding brush for quartz stone includes the following components by weight: 20% to 30% silicon carbide, 15% to 25% diamond, 5% to 8% aluminum oxide, 10% to 20% nylon compound, 20% to 30% nylon, 0.5% to 2% auxiliary agent, and 15% to 25% toughening agent. The nylon compound is a glass fiber reinforced nylon compound, nylon is polyamide, and the auxiliary agent is composed of PA auxiliary agent, antioxidant and coupling agent, wherein the mass fraction of PA auxiliary agent is 1% to 1.5%, antioxidant is 0.3% to 0.5% and coupling agent is 0.3% to 0.5%. Specifically, the antioxidant is zinc dialkyl dithiophosphate or zinc dialkyl dithiocarbamate, the coupling agent is silane coupling agent or titanate coupling agent, and the toughening agent is styrene-butadiene thermoplastic elastomer, acrylonitrile-butadiene-styrene copolymer or ethylene-vinyl acetate copolymer. Silicon carbide and diamond are abrasives, and aluminum oxide and nylon composites are auxiliary materials.

[0066] Embodiment 1

[0067] A manufacturing process of a special grinding brush for quartz stone, including the special grinding brush for quartz stone described above, and comprising the following components by weight:

[0068] Silicon carbide: 20%;

[0069] Diamond: 15%;

[0070] Alumina: 5%;

[0071] Glass fiber reinforced nylon composite: 10%;

[0072] Nylon: 20%;

[0073] Additives: 0.5%, including PA additive: 1%, zinc dialkyl dithiophosphate: 0.3%, silane coupling agent: 0.3%;

[0074] Styrene-butadiene thermoplastic elastomer: 15%;

[0075] The manufacturing process includes the following steps:

[0076] Step 1: Dehydrating nylon, additives and toughening agents respectively;

[0077] Step 2: Weigh the nylon, additives and toughening agent in step 1 according to the formula, put the nylon, additives and toughening agent into the reactor for mixing and heating, heat the temperature to 240°C, stop heating and keep warm, stir evenly at the same time, stir for 2 hours, and finally extrude, cool and granulate;

[0078] Step 3: Dehydrate the modified mixture in step 2 and crush it to obtain particles, the particle size of the particles is 80#;

[0079] Step 4: Drying the silicon carbide, diamond, aluminum oxide and nylon composite respectively;

[0080] Step 5: Weigh the silicon carbide, diamond, aluminum oxide and nylon compound in step 4 according to the formula, and place them in a mixer with the particles obtained in step 3 to mix evenly;

[0081] Step 6: Screen the mixed materials to prevent agglomeration;

[0082] Step 7: The material screened in step 6 is added to the twin-screw extruder through the main feeding port at a constant speed and a quantitative manner, the heating temperature is controlled at 230° C., the screw speed is controlled at 500 rpm, and after being melted, it is extruded and granulated to obtain mixed granules;

[0083] Step 8: Put the material obtained in step 7 into the mold and form it under high temperature and high pressure;

[0084] Step 9: Remove the bristles from the mold and store them in a constant temperature environment of 75°C for 48 hours. Use them only after their performance stabilizes.

[0085] Step 10: Trim the appearance of the processed bristles and glue them to the corresponding base.

[0086] Embodiment 2

[0087] A manufacturing process of a special grinding brush for quartz stone, including the special grinding brush for quartz stone described above, and comprising the following components by weight:

[0088] Silicon carbide: 25%;

[0089] Diamond: 20%;

[0090] Alumina: 6%;

[0091] Glass fiber reinforced nylon composite: 15%;

[0092] Nylon: 25%;

[0093] Additives: 1%, including PA additive: 1.2%, zinc dialkyl dithiophosphate: 0.4%, silane coupling agent: 0.4%;

[0094] Styrene-butadiene thermoplastic elastomer: 20%;

[0095] The manufacturing process includes the following steps:

[0096] Step 1: Dehydrating nylon, additives and toughening agents respectively;

[0097] Step 2: Weigh the nylon, additives and toughening agent in step 1 according to the formula, put the nylon, additives and toughening agent into the reactor for mixing and heating, heat the temperature to 250°C, stop heating and keep warm, stir evenly at the same time, stir for 2.5 hours, and finally extrude, cool and granulate;

[0098] Step 3: Dehydrate the modified mixture in step 2 and crush it to obtain particles, the particle size of the particles is 100#;

[0099] Step 4: Drying the silicon carbide, diamond, aluminum oxide and nylon composite respectively;

[0100] Step 5: Weigh the silicon carbide, diamond, aluminum oxide and nylon compound in step 4 according to the formula, and place them in a mixer with the particles obtained in step 3 to mix evenly;

[0101] Step 6: Screen the mixed materials to prevent agglomeration;

[0102] Step 7: Add the material screened in step 6 to the twin-screw extruder through the main feeding port at a constant speed and in a quantitative manner, control the heating temperature at 240° C., control the screw speed at 550 rpm, and extrude and granulate after melting to obtain mixture particles;

[0103] Step 8: Put the material obtained in step 7 into the mold and form it under high temperature and high pressure;

[0104] Step 9: Remove the bristles from the mold and store them in a constant temperature environment of 80℃ for 48 hours. Use them only after their performance stabilizes.

[0105] Step 10: Trim the appearance of the processed bristles and glue them to the corresponding base.

[0106] Embodiment 3

[0107] A manufacturing process of a special grinding brush for quartz stone, including the special grinding brush for quartz stone described above, and comprising the following components by weight:

[0108] Silicon carbide: 30%;

[0109] Diamond: 25%;

[0110] Alumina: 8%;

[0111] Glass fiber reinforced nylon composite: 20%;

[0112] Nylon: 30%;

[0113] Additives: 2%, including PA additive: 1.5%, zinc dialkyl dithiophosphate: 0.5%, silane coupling agent: 0.5%;

[0114] Styrene-butadiene thermoplastic elastomer: 25%;

[0115] The manufacturing process includes the following steps:

[0116] Step 1: Dehydrating nylon, additives and toughening agents respectively;

[0117] Step 2: Weigh the nylon, additives and toughening agent in step 1 according to the formula, put the nylon, additives and toughening agent into the reactor for mixing and heating, heat the temperature to 260°C, stop heating and keep warm, stir evenly at the same time, stir for 3 hours, and finally extrude, cool and granulate;

[0118] Step 3: Dehydrate the modified mixture in step 2 and crush it to obtain particles, the particle size of the particles is 120#;

[0119] Step 4: Drying the silicon carbide, diamond, aluminum oxide and nylon composite respectively;

[0120] Step 5: Weigh the silicon carbide, diamond, aluminum oxide and nylon compound in step 4 according to the formula, and place them in a mixer with the particles obtained in step 3 to mix evenly;

[0121] Step 6: Screen the mixed materials to prevent agglomeration;

[0122] Step 7: quantitatively and uniformly add the material screened in step 6 to a twin-screw extruder through a main feeding port, control the heating temperature at 250° C., control the screw speed at 590 rpm, and extrude and granulate after melting to obtain mixture particles;

[0123] Step 8: Put the material obtained in step 7 into the mold and form it under high temperature and high pressure;

[0124] Step 9: Remove the bristles from the mold and store them in a constant temperature environment of 85℃ for 48 hours. Use them only after their performance stabilizes.

[0125] Step 10: Trim the appearance of the processed bristles and glue them to the corresponding base.

[0126] The following table shows the test results of grinding quartz stone plates using Example 1, Example 2, Example 3 and existing common grinding brushes. The particle size of the bristles is 24#. Figure 1 The durability refers to the time it takes for the bristles to be worn to a distance of only 3mm from the base when the abrasive brush is working continuously, and the glossiness refers to the glossiness of the quartz stone after polishing.

[0127] project Prior art Embodiment 1 Embodiment 2 Embodiment 3 Glossiness 25 15 16 14 Durability (h) 6 10 11 12

[0128] From the above table and Fig. 9 , Fig.10 It can be seen that the polishing brush of the present invention can achieve a glossiness of about 15 degrees after polishing the quartz stone plate, with a good antique effect, clear texture, three-dimensional sense, and high durability. Fig. 9 It can be seen that the polishing effect of the grinding brush in the prior art is poor.

[0129] Based on the above scheme, if various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A manufacturing process for a special grinding brush for quartz stone, calculated by weight, including the following components: Silicon carbide: 20%~30%; Diamond: 15%~25%; Alumina: 5%~8%; Nylon: 20%~30%; Nylon compound: 10%~20%; Additives: 0.5%~2%; Toughening agent: 15%~25%; The manufacturing process includes the following steps: Step 1: Dehydrating nylon, additives and toughening agents respectively; Step 2: Weigh the nylon, additives and toughening agents in step 1 according to the formula, and perform modification and granulation by mixing; Step 3: dehydrating and crushing the modified mixture in step 2 to obtain particles; Step 4: Drying the silicon carbide, diamond, aluminum oxide and nylon composite respectively; Step 5: Weigh the silicon carbide, diamond, aluminum oxide and nylon compound in step 4 according to the formula, and place them in a mixer with the particles obtained in step 3 to mix evenly; Step 6: Screen the mixed materials to prevent agglomeration; Step 7: The materials in step 6 are mixed, modified and granulated; Step 8: Put the material obtained in step 7 into the mold and form it under high temperature and high pressure; Step 9: Remove the bristles from the mold and stabilize them; Step 10: trim the treated bristles and glue them to the corresponding base; The structure of the quartz stone special grinding brush comprises a base (1), the bottom surface of the base (1) is provided with a bristle group, characterized in that the bristles in the bristle group have at least two different diameters; The bristle group comprises a plurality of first bristle groups (9) and a plurality of second bristle groups (10), and there is a height difference between the bristles of the first bristle group (9) and the bristles of the adjacent second bristle group (10).

2. The manufacturing process of a quartz stone special grinding brush according to claim 1, characterized in that: The bristles of the first bristle group (9) are distributed in rows along the length direction of the base (1), and the bristles of the second bristle group (10) are distributed in rows along the length direction of the base (1).

3. The manufacturing process of a special grinding brush for quartz stone according to claim 2, characterized in that: The first bristle group (9) and the second bristle group (10) are arranged alternately and parallel to each other.

4. The manufacturing process of a special grinding brush for quartz stone according to claim 3 is characterized in that: The bristles of the first bristle group (9) and the bristles of the adjacent second bristle group (10) are staggered with each other.

5. The manufacturing process of a special grinding brush for quartz stone according to claim 3, characterized in that: The line connecting the projections of the lower ends of the bristles of the bristle group in the width direction of the base (1) is an arc shape with an opening upward.

6. The manufacturing process of a special grinding brush for quartz stone according to claim 1, characterized in that: The bristle particle sizes of the bristle group are all 24#~1500#.

7. The manufacturing process of a quartz stone special grinding brush according to claim 1, characterized in that: The first bristle group (9) comprises a plurality of coarse bristles (2) and a plurality of medium bristles (16), and the plurality of coarse bristles (2) and the plurality of medium bristles (16) are distributed alternately.

8. The manufacturing process of a special grinding brush for quartz stone according to claim 7, characterized in that: The second bristle group (10) comprises a plurality of thin bristles (3).

9. The manufacturing process of a special grinding brush for quartz stone according to claim 1, characterized in that: It also comprises a base (4), the first bristle group (9) and the second bristle group (10) are both fixed on the bottom surface of the base (4), and the upper end of the base (4) is clamped on the bottom of the base (1).

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