Stone-like PC brick and preparation method thereof

Abstract

The invention discloses a stone-like PC brick and a preparation method thereof. The preparation method comprises the following steps: S1, intelligent material preparation: respectively preparing a base layer mixture and a surface layer mixture; s2, multi-layer cloth and intelligent random coloring: S21, laying a base layer; s22, a transition layer is prepared and laid, specifically, the base layer mixture and the surface layer mixture are put into a treatment device in proportion and stirred for 10-15 seconds at the rotating speed of 50-100 rpm for incomplete mixing, and then the obtained fuzzy interface mixture is laid on the base layer; and S23, paving a surface layer and synchronously, intelligently and randomly coloring, namely spraying colored slurry into an aggregate layer in a random pulse mode through a coloring agent nozzle array controlled by an industrial PC (Personal Computer) according to a pre-stored texture algorithm model while paving the aggregate of the surface layer. By creating a heterogeneous structure of the fuzzy interface transition layer and combining the random discontinuous textures intelligently generated in the surface layer, the whole-body stone imitation effect from the surface to the interior of the brick body is achieved.

Description

Technical Field

[0001] This invention relates to the field of imitation stone PC brick technology, and in particular to an imitation stone PC brick and its preparation method. Background Technology

[0002] Imitation stone PC bricks are a type of paving material widely used in outdoor areas such as squares, sidewalks, and garden landscapes. They imitate the color and texture of natural stone by using raw materials such as cement and aggregates. They have advantages such as low cost and short production cycle, making them a good substitute for natural stone. Currently, the main types of imitation stone PC bricks on the market are through-body bricks. They typically employ a layered material application process, where a layer of colored surface material and a layer of base material are laid before pressing. This method improves wear resistance to some extent. However, existing through-body bricks still have shortcomings: the surface layer and base layer are usually made of two different materials in terms of texture and color, with clear boundaries between layers. When the brick needs to be laterally cut or when the edges wear down during use, unnatural and harsh horizontal layering lines are exposed, severely affecting the overall aesthetics and sense of sophistication, making it difficult to achieve the natural effect of "through-body." The color effect of the surface layer largely relies on the use of premixed colored aggregates or uniformly mixed colored cement, resulting in a relatively homogeneous color effect that cannot effectively imitate the random, three-dimensional texture of natural stone's internal crystal penetration and color halos. Therefore, there is an urgent need in this field for a new technical solution that can fundamentally solve the problem of stiff interlayer bonding and generate realistic, random natural stone textures inside the brick, achieving a high degree of simulation from the surface to the inside. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stone-like PC brick and its preparation method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A method for preparing imitation stone PC bricks includes the following steps: S1: Intelligent batching: Separately prepare the base layer mixture and the surface layer mixture; S2: Multi-layered fabric with intelligent random coloring: S21: Laying the base layer; S22: Preparation and laying of transition layer: The base layer mixture and the surface layer mixture are added into the processing device in proportion and stirred at a speed of 50-100 rpm for 10-15 seconds for incomplete mixing. The resulting fuzzy interface mixture is then laid on the base layer. S23: Laying the surface layer and simultaneously applying intelligent random coloring: While laying the surface layer aggregate, the colored paste is sprayed into the aggregate layer in a random pulse manner through a colorant nozzle array controlled by an industrial PC, based on a pre-stored texture algorithm model. S3: High-frequency micro-amplitude vibration: The blank after the fabric is laid is vibrated at high frequency and low amplitude to make the color paste blend naturally and the aggregate compacted; S4: Pressure molding, curing, and demolding.

[0005] As a further aspect of the present invention: the specific process of intelligent random coloring in step S23 is as follows: the industrial PC controls multiple colorant nozzles to independently spray different colors of pigment at random spatial positions and time sequences in a short pulse manner at the level of 0.01 seconds, according to the selected natural stone texture algorithm model.

[0006] As a further embodiment of the present invention: the processing device in step S includes a mixing tank, a cover plate fixed to the top outer wall of the mixing tank, a lifting mechanism installed on the top outer wall of the cover plate, a servo motor installed on the lifting mechanism, a stirring rod connected to the output end of the servo motor, blades welded to the outer wall of the stirring rod, a feeding pipe welded to the top outer wall of the cover plate, a funnel welded to the top of the feeding pipe, a guide post and a transverse plate welded to the circumferential outer wall of the feeding pipe, an intermediate ring movably connected to the circumferential outer wall of the feeding pipe, a lifting plate movably connected to the guide post and the outer wall of the feeding pipe, a retaining ring welded to the bottom of the lifting plate, a coil spring installed between the circumferential outer wall of the retaining ring and the top of the intermediate ring, a roller component installed on the side of the intermediate ring, a cam fixed to the circumferential outer wall of the stirring rod, a screening component connected to the side of the intermediate ring via a pipe, and a material hole opened on the side of the feeding pipe.

[0007] As a further embodiment of the present invention: the screening assembly includes a screening box, a filling pipe welded to the top of the screening box, a screen movably connected in the mounting hole opened on the side of the screening box, support plates fixed on the inner walls of both sides of the screening box, a limiting plate fixed on the side of the screening box to block the mounting hole, and a baffle inserted into the outlet hole opened on the other side of the screening box, the baffle and the screening box being fixed by a snap fastener.

[0008] As a further embodiment of the present invention: the lifting mechanism includes an electric telescopic rod and a mounting plate. The electric telescopic rod is fixed to the top outer wall of the cover plate, and the mounting plate and the output end of the electric telescopic rod are fixedly connected. A servo motor is fixed to the top outer wall of the mounting plate.

[0009] As a further embodiment of the present invention: the pipe fitting includes a connecting pipe and a first connecting pipe. The first connecting pipe is welded to the side wall of the screening box, and the connecting pipe is welded to the side wall of the intermediate ring. The connecting pipe and the first connecting pipe are movably connected by a rotary joint. A bevel gear is fixed on the outer circumference of the first connecting pipe. An electric telescopic rod is fixed on the top outer wall of the cover plate. An arc-shaped gear plate that cooperates with the bevel gear is fixed at the output end of the electric telescopic rod.

[0010] As a further embodiment of the present invention: the roller component includes a roller body, a U-shaped frame and an intermediate column, the intermediate column is fixed to the side wall of the intermediate ring, the U-shaped frame is welded to one end of the intermediate column, and the roller body and the U-shaped frame are movably connected.

[0011] As a further embodiment of the present invention: a feed pipe is welded to the outer wall of the bottom of the mixing tank, a solenoid valve is fixed at the bottom of the feed pipe, and a controller is installed on the side of the mixing tank.

[0012] A stone-like PC brick includes a base layer mixture for forming the product, a surface layer mixture, and a transition layer mixture for forming a transition layer between the base layer and the surface layer. The base mixture includes high-strength cement, coarse aggregate with a particle size of 3-8mm, water, and high-efficiency water-reducing agent; The surface layer mixture includes high-strength cement, colored aggregate with a particle size of less than 3 mm, pigments, and additives; The transition layer mixture is composed of 60% base layer mixture and 40% surface layer mixture through incomplete mixing.

[0013] As a further aspect of the present invention: the surface mixture is pre-loaded with a random texture carrier, which is a high-concentration colored cement slurry or an inorganic oxide pigment.

[0014] Compared with the prior art, the present invention provides a stone-like PC brick and its preparation method, which has the following beneficial effects: 1. The servo motor and stirring components can be lifted as a whole through the lifting mechanism, so that the stirring blades can cover areas of different depths inside the mixing tank. This dynamic stirring method eliminates the dead corners that may be generated by fixed-depth stirring, ensuring that the materials in the upper and lower layers of the tank can be fully mixed. At the same time, the lifting mechanism can also indirectly lift the pipe after the screening component has completed screening, so that the screened material enters the feeding pipe through the pipe and the material hole for feeding.

[0015] 2. The cam rotation drives the screening box to swing horizontally, and combined with the bevel gear and arc-shaped gear disk transmission, it simultaneously produces up-and-down swinging, forming a unique composite vibration mode that combines horizontal and vertical directions. This multidimensional vibration greatly promotes the tumbling and movement of materials on the screen, effectively prevents screen hole clogging, and significantly improves screening efficiency and cleanliness.

[0016] 3. By integrating the screening components with the mixing tank, solid materials can be screened immediately after being added, effectively removing impurities and ensuring the purity of PC brick raw materials. The screened materials can be directly fed into the mixing tank without transfer, simplifying the process and reducing dust pollution and material loss.

[0017] 4. By creating a heterogeneous structure with a blurred interface transition layer, combined with the random discontinuous texture intelligently generated inside the surface layer, a full-body imitation stone effect is achieved from the surface of the brick to its interior. The blurred interface transition layer effectively eliminates the hard dividing line on the side of the traditional layered brick, so that the exposed cross-section of the brick after cutting, abrasion or breakage still presents the grainy texture and color transition of natural stone, thus improving the authenticity of the imitation stone.

[0018] 5. By using a preparation method that combines controlled incomplete mixing with intelligent random pulse coloring, the generation of stone-like textures is upgraded from traditional surface printing or artificial fabric to an intelligent and intrinsic process. This not only accurately and efficiently reproduces the vein characteristics of various natural stones and avoids pattern repetition, but also enables the color paste and aggregate to be microscopically fused through high-frequency micro-vibration. This enhances the naturalness of the texture while significantly improving the overall density, mechanical strength, and stain resistance and wear resistance of the brick.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the processing device for the preparation method of imitation stone PC bricks proposed in this invention. Figure 2 This is a cross-sectional schematic diagram of the processing device for a method of preparing imitation stone PC bricks proposed in this invention. Figure 3 This is a schematic diagram of the bottom structure of the processing device for a method of preparing imitation stone PC bricks proposed in this invention. Figure 4 This is a schematic diagram of the overall structure of the screening component of the processing device for the preparation method of imitation stone PC bricks proposed in this invention. Figure 5 This is a schematic diagram of the side-direction structure of the screening component of the processing device for the preparation method of imitation stone PC bricks proposed in this invention. Figure 6This is a schematic diagram of the main structure of the screening component of the processing device for the preparation method of imitation stone PC bricks proposed in this invention. Figure 7 This is a schematic diagram of the feeding mechanism installation structure of the processing device for the preparation method of imitation stone PC bricks proposed in this invention. Figure 8 This is an exploded view of the feeding mechanism of the processing device for the preparation method of imitation stone PC bricks proposed in this invention.

[0021] In the diagram: 1. Mixing tank; 2. Controller; 3. Cover plate; 4. Servo motor; 5. Funnel; 6. Screening box; 7. Electric telescopic rod one; 8. Mounting plate; 9. Coil spring; 10. Filling pipe; 11. Limiting plate; 12. Blade; 13. Discharge pipe; 14. Solenoid valve; 15. Feeding pipe; 16. Connecting pipe; 17. Bevel gear; 18. Rotary joint; 19. Arc-shaped gear disc; 20. Electric telescopic rod two; 21. Mixing rod; 22. Connecting pipe one; 23. Cam; 24. Screen; 25. Support plate; 26. Intermediate ring; 27. Baffle; 28. Roller body; 29. ​​U-shaped frame; 30. Intermediate column; 31. Horizontal plate; 32. Material hole; 33. Clamping ring; 34. Lifting plate; 35. Guide column. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Example 1 A type of imitation stone PC brick, comprising, from bottom to top: Base layer: includes high-strength cement, coarse aggregate (such as stone chips or manufactured sand with a particle size of 3-5mm or 5-8mm), water, and high-efficiency water-reducing agent; Surface layer: Includes cementitious materials: high-strength cement; Special aggregates: colored quartz sand, crushed glass particles, mine tailings, etc. (particle size is usually less than 3mm), used to provide basic color and texture; Additives: water-reducing agents, reinforcing agents, pigments; Random texture carrier: During the fabric application process, high-concentration colored cement slurry or inorganic oxide pigments are sprayed into the gaps between this layer of aggregates in a random pulse manner; Transition layer: It is physically combined with the base layer mixture mentioned above and the surface layer mixture mentioned below in a specific ratio (such as 70% base layer material and 40% surface layer material); The transition layer is a "fuzzy interface" with color and aggregate gradient changes formed by two materials under controlled incomplete mixing, mimicking the grain penetration effect of natural stone.

[0024] Example 2: A method for preparing imitation stone PC bricks includes the following steps: S1: Ingredients: According to the product design, the various raw materials required for the base layer and surface layer are accurately weighed through a computer control system; S2: Multi-layered fabric with intelligent random coloring: S21: Base layer laying After the pre-prepared base material is mixed by the processing device, it is evenly spread on the bottom of the mold to ensure a consistent thickness. A scraper or vibrator is used to initially level the base material, remove air bubbles, and form a stable base. S22: Transition Layer Preparation and Laying Add the base material to the processing device according to the predetermined ratio (e.g., base material: surface material = 3:1) and stir at low speed (e.g., 50-100 rpm, 10-15 seconds) to form a "fuzzy interface" mixture (the color / material boundary is clear but not completely uniform). After the treatment is completed, the mixture is laid on the base layer with a thickness of 3-5mm, and lightly compacted with a light compactor. S23: Surface Layer Lamination and Intelligent Random Coloring The pre-configured surface material is mixed using a processing device and then laid. The designed thickness of the layer (e.g., 8-12mm) forms a loose, unvibrated layer. The aggregate particle size must match the color paste spraying precision (e.g., 0.5-2mm particles are suitable for micro-spraying). The intelligent coloring system starts the industrial PC to run natural stone texture algorithms (such as random fractal models of sesame black and golden sesame); each nozzle is connected to different color pastes (such as black, gray, gold, and white), supporting independent control. The PC generates random coordinates according to the algorithm and controls the nozzles to spray between the aggregates. The start time of each nozzle is staggered (such as 0.1-0.5 seconds interval) to simulate the unpredictability of natural textures. The color paste is sprayed with short pulses (such as 0.01 seconds) to ensure uniform penetration depth (about 1-3mm). After coloring, use a vibrating table or plate vibrator to lightly compact the surface layer so that the color paste and aggregate are fully combined. Enhance the naturalness of the texture through polishing or sandblasting. If necessary, perform secondary coloring repair. S3: High-frequency micro-amplitude vibration: Transfer the mold with the completed material to the high-frequency low-amplitude vibration table for vibration, so that the aggregate is tightly arranged and large air bubbles are expelled. This allows the color paste randomly sprayed in step S23 to flow, penetrate and fuse at the micro level in a limited and natural way, forming a "color halo" and "crystal vein" effect similar to natural stone, thereby improving the density and strength of the brick. S4: Pressure molding: After vibration, the blank in the mold is pressed under high pressure by a large press to achieve the predetermined thickness and initial strength. S5: Curing: Standard curing (such as film covering for heat preservation and moisture retention curing, steam curing, etc.) is carried out on the molded brick blanks. S6: Demolding, Inspection and Packaging: After curing, demold and package the product after passing quality inspection.

[0025] Example 3 A method for preparing imitation stone PC bricks, such as Figures 1 to 8 As shown, the processing device in step S2 includes a mixing tank 1. A cover plate 3 is fixed to the top outer wall of the mixing tank 1 by screws. A lifting mechanism is installed on the top outer wall of the cover plate 3. A servo motor 4 is installed on the lifting mechanism. The output end of the servo motor 4 is connected to a stirring rod 21 via a coupling. Blades 12 are welded to the outer wall of the stirring rod 21. A feeding pipe 15 is welded to the top outer wall of the cover plate 3. A funnel 5 is welded to the top of the feeding pipe 15. Guide posts 35 and a transverse plate 31 are welded to the outer circumference of the feeding pipe 15. A middle ring 26 is slidably connected to the outer circumference of the feed pipe 15. A lifting plate 34 is slidably connected to the guide column 35 and the outer wall of the feed pipe 15. A retaining ring 33 is welded to the bottom of the lifting plate 34. A coil spring 9 is installed between the outer circumference of the retaining ring 33 and the top of the middle ring 26. A roller is installed on the side of the middle ring 26. A cam 23 that works with the roller is fixed to the outer circumference of the stirring rod 21 by screws. A screening component is connected to the side of the middle ring 26 by a pipe. A feed hole 32 that works with the pipe is opened on the side of the feed pipe 15. When materials need to be mixed and stirred, liquid materials can be fed into the mixing tank 1 through the feeding pipe 15 using the funnel 5. When solid materials need to be fed, the materials are introduced into the screening component for screening. The purpose of screening is to remove impurities from the materials, ensure the purity of the materials, and improve the mixing and stirring effect. In order to improve screening efficiency during the screening process, the height of cam 23 is dynamically adjusted within a certain range using a lifting mechanism. When the height of cam 23 is adjusted to be flush with the height of the roller, the servo motor 4 drives cam 23 to rotate. When cam 23 rotates to the roller, it squeezes the roller. After the roller is compressed, the intermediate ring 26 rotates relative to the transverse plate 31 and the feed pipe 15, which in turn causes the screening assembly connected by the pipe to swing. During the swing, the guide column 35 clamps the retaining ring 33 and the lifting plate 34 in the circumferential direction. The limiting mechanism prevents the retaining ring 33 and the lifting plate 34 from rotating relative to the feeding pipe 15, while the intermediate ring 26 rotates relative to the feeding pipe 15 and the transverse plate 31. This causes the coil spring 9 to undergo elastic deformation. After the coil spring 9 undergoes elastic deformation, it stores potential energy. When the cam 23 and the roller part disengage, the coil spring 9 converts the potential energy into kinetic energy, ensuring that the intermediate ring 26 is reset relative to the feeding pipe 15 and the transverse plate 31. In this embodiment, the number of coil springs 9 is not specifically limited. In actual operation, multiple sets of coil springs 9 can be stacked to ensure that their kinetic energy is sufficient for the screening component to reset. The coil spring 9 is used to make the cam 23 reciprocate to squeeze the roller, which makes the material inside the screening component shake faster during the left and right swinging process, thereby improving the screening efficiency. When the screening component completes screening and needs to be loaded, the height of cam 23 is adjusted using a lifting mechanism. The lifting mechanism drives cam 23 to move down to a height that intersects with the roller. Then, the servo motor 4 drives cam 23 to rotate directly below the roller. Specifically, a rotary encoder or position sensor can be used in conjunction with the servo motor 4 to monitor the rotation phase of cam 23 in real time. When the long diameter end of cam 23 is detected to be directly below the roller 28, the lifting mechanism drives cam 23 to move up, thus ensuring accurate positioning each time. The roller is lifted, and the cam 23 is driven to move upward by the lifting mechanism. During the upward movement of the cam 23, the roller is lifted. After the roller is lifted, the middle ring 26 moves upward along the feeding pipe 15. During this process, the lifting plate 34 and the retaining ring 33 move upward synchronously under the guidance of the guide column 35. When the end of the pipe that is away from the screening component moves to a relative opening between it and the material hole 32, the material in the screening component enters the feeding pipe 15 through the pipe and the material hole 32 for feeding, so that the material enters the mixing tank 1 through the feeding pipe 15. After the material enters the mixing tank 1, the servo motor 4 drives the blades 12 and the stirring rod 21 to stir and mix the material. During the mixing process, the height of the servo motor 4 is adjusted by the lifting mechanism, which in turn adjusts the height of the blades 12, so that the blades 12 can evenly stir the material at different depths inside the mixing tank 1, ensuring the uniformity of the stirring.

[0026] The screening assembly includes a screening box 6, with a filling pipe 10 welded to the top of the screening box 6. A screen 24 is slidably connected in the mounting hole on the side of the screening box 6. Support plates 25 for supporting the screen 24 are fixed to the inner walls of both sides of the screening box 6 by screws. Limiting plates 11 for sealing the mounting hole are fixed to the side of the screening box 6 by screws. The bottom inner wall of the screening box 6 is provided with an inclined surface. A baffle 27 is inserted into the outlet hole on the other side of the screening box 6. The baffle 27 and the screening box 6 are fixed by a buckle. When materials need to be screened, first select a screen 24 with a suitable aperture and slide it along the mounting hole on the side of the screening box 6. Use the support plate 25 to support the screen 24. Then insert the baffle 27 into the mounting hole and fix it between it and the screening box 6 to achieve lateral limiting of the screen 24. The screen 24 screens the materials. The screened materials fall through the screen 24 to the bottom slope of the screening box 6. Use the slope to guide the materials to enter the feeding pipe 15 through the pipe fitting for feeding. When it is necessary to clean the material filtered and trapped by the screen 24, the baffle 27 is removed from the side of the screening box 6 using the buckle. The buckle can be spring-type or hook-type, so that the material filtered and trapped by the screen 24 slides down the inclined screen 24 and is finally discharged through the outlet hole.

[0027] The lifting mechanism includes an electric telescopic rod 7 and a mounting plate 8. The electric telescopic rod 7 is fixed to the top outer wall of the cover plate 3 by bolts. The mounting plate 8 and the output end of the electric telescopic rod 7 are fixedly connected. The servo motor 4 is fixed to the top outer wall of the mounting plate 8 by screws. The height of the mounting plate 8 and the servo motor 4 can be dynamically adjusted using the electric telescopic rod 7.

[0028] The pipe fitting includes a connecting pipe 16 and a connecting pipe 22. The connecting pipe 22 is welded to the side wall of the screening box 6, and the connecting pipe 16 is welded to the side wall of the intermediate ring 26. The connecting pipe 16 and the connecting pipe 22 are rotatably connected by a rotary joint 18. A bevel gear 17 is fixed to the outer circumference of the connecting pipe 22. An electric telescopic rod 20 is fixed to the top outer wall of the cover plate 3 by screws. An arc-shaped toothed disc 19 that cooperates with the bevel gear 17 is fixed to the output end of the electric telescopic rod 20. In the initial state, the electric telescopic rod 20 adjusts the height of the arc-shaped toothed disc 19 so that the arc-shaped toothed disc 19 and the bevel gear 17 remain engaged. Therefore, when the screening component swings left and right, the bevel gear 17 and the arc-shaped toothed disc 19 cause the connecting pipe 22 to rotate relative to the connecting pipe 16 through the rotary joint 18. Thus, the screening component not only swings left and right but also swings up and down during this process, thereby further improving the screening efficiency of materials. When the height of the screening component needs to be adjusted, during the process of the cam 23 lifting the roller, the electric telescopic rod 20 simultaneously lifts the arc-shaped toothed disc 19. The moving speed of the arc-shaped toothed disc 19 and the roller remains the same, so that the arc-shaped toothed disc 19 and the bevel gear 17 remain meshed during this process.

[0029] The roller assembly includes a roller body 28, a U-shaped frame 29, and an intermediate column 30. The intermediate column 30 is fixed to the side wall of the intermediate ring 26 by screws, and the U-shaped frame 29 is welded to one end of the intermediate column 30. The roller body 28 and the U-shaped frame 29 are rotatably connected. When the cam 23 rotates, it touches the roller body 28 and squeezes the roller body 28, causing the intermediate ring 26 to swing along the feed tube 15.

[0030] The bottom outer wall of the mixing tank 1 is welded with a feeding pipe 13, and a solenoid valve 14 is fixed to the bottom of the feeding pipe 13 by bolts; After the materials are mixed and stirred, the solenoid valve 14 is opened, allowing the mixed materials to be discharged through the feed pipe 13 and the solenoid valve 14.

[0031] A controller 2 is installed on the side of the mixing tank 1; The controller 2 is used to control the start and stop of the servo motor 4, the electric telescopic rod 7, the electric telescopic rod 20 and the solenoid valve 14 and their operating parameters, so as to realize the automated operation of the feeding, screening, mixing and unloading process.

[0032] Working principle: First, solid materials are added to the screening box 6 via controller 2. The screening components are driven to swing left and right and up and down by the lifting and rotating cam 23 for efficient screening. The screened pure materials are lifted by cam 23 and fall into the mixing tank 15 through the connecting pipe 16 and material hole 32 under the action of the lifting cam 23, where they are mixed with the liquid materials. Then, the servo motor 4 drives the stirring rod 21 and blade 12 to rotate, while the lifting mechanism moves them up and down to achieve uniform mixing of materials at different depths in the tank. After mixing is completed, controller 2 opens the solenoid valve 14 to discharge the material through the discharge pipe 13.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing imitation stone PC bricks, characterized in that, Includes the following steps: S1: Intelligent batching: Separately prepare the base layer mixture and the surface layer mixture; S2: Multi-layered fabric with intelligent random coloring: S21: Laying the base layer; S22: Preparation and laying of transition layer: The base layer mixture and the surface layer mixture are added into the processing device in proportion and stirred at a speed of 50-100 rpm for 10-15 seconds for incomplete mixing. The resulting fuzzy interface mixture is then laid on the base layer. S23: Laying the surface layer and simultaneously applying intelligent random coloring: While laying the surface layer aggregate, the colored paste is sprayed into the aggregate layer in a random pulse manner through a colorant nozzle array controlled by an industrial PC, based on a pre-stored texture algorithm model. S3: High-frequency micro-amplitude vibration: The blank after the fabric is laid is vibrated at high frequency and low amplitude to make the color paste blend naturally and the aggregate compacted; S4: Pressure molding, curing, and demolding.

2. The method for preparing a stone-like PC brick according to claim 1, characterized in that, The specific process of intelligent random coloring in step S23 is as follows: the industrial PC controls multiple colorant nozzles to independently spray different colors of pigment at random spatial positions and time sequences in a short pulse mode at the level of 0.01 seconds, according to the selected natural stone texture algorithm model.

3. The method for preparing a stone-like PC brick according to claim 2, characterized in that, The processing device in step S2 includes a mixing tank (1), a cover plate (3) fixed to the top outer wall of the mixing tank (1), a lifting mechanism installed on the top outer wall of the cover plate (3), a servo motor (4) installed on the lifting mechanism, a stirring rod (21) connected to the output end of the servo motor (4), blades (12) welded to the outer wall of the stirring rod (21), a feeding pipe (15) welded to the top outer wall of the cover plate (3), a funnel (5) welded to the top of the feeding pipe (15), and guide posts (35) and transverse plates (31) welded to the circumferential outer wall of the feeding pipe (15). The outer circumference of the feeding pipe (15) is movably connected to an intermediate ring (26). The guide column (35) and the outer wall of the feeding pipe (15) are movably connected to a lifting plate (34). A retaining ring (33) is welded to the bottom of the lifting plate (34). A coil spring (9) is installed between the outer circumference of the retaining ring (33) and the top of the intermediate ring (26). A roller is installed on the side of the intermediate ring (26). A cam (23) is fixed on the outer circumference of the stirring rod (21). A screening component is connected to the side of the intermediate ring (26) through a pipe. A material hole (32) is opened on the side of the feeding pipe (15).

4. The method for preparing a stone-like PC brick according to claim 3, characterized in that, The screening assembly includes a screening box (6), a filling pipe (10) welded to the top of the screening box (6), a screen (24) movably connected in the mounting hole opened on the side of the screening box (6), a support plate (25) fixed on the inner walls of both sides of the screening box (6), a limiting plate (11) for sealing the mounting hole fixed on the side of the screening box (6), and a baffle (27) inserted into the outlet hole opened on the other side of the screening box (6). The baffle (27) and the screening box (6) are fixed together by a snap fastener.

5. The method for preparing a stone-like PC brick according to claim 3, characterized in that, The lifting mechanism includes an electric telescopic rod (7) and a mounting plate (8). The electric telescopic rod (7) is fixed to the top outer wall of the cover plate (3). The mounting plate (8) and the output end of the electric telescopic rod (7) are fixedly connected. The servo motor (4) is fixed to the top outer wall of the mounting plate (8).

6. The method for preparing a stone-like PC brick according to claim 5, characterized in that, The pipe fittings include a connecting pipe (16) and a connecting pipe one (22). The connecting pipe one (22) is welded to the side wall of the screening box (6), and the connecting pipe (16) is welded to the side wall of the intermediate ring (26). The connecting pipe (16) and the connecting pipe one (22) are movably connected by a rotary joint (18). A bevel gear (17) is fixed on the outer circumference of the connecting pipe one (22). An electric telescopic rod two (20) is fixed on the top outer wall of the cover plate (3). An arc-shaped gear disc (19) that cooperates with the bevel gear (17) is fixed at the output end of the electric telescopic rod two (20).

7. The method for preparing a stone-like PC brick according to claim 6, characterized in that, The roller assembly includes a roller body (28), a U-shaped frame (29), and an intermediate column (30). The intermediate column (30) is fixed to the side wall of the intermediate ring (26), and the U-shaped frame (29) is welded to one end of the intermediate column (30). The roller body (28) and the U-shaped frame (29) are movably connected.

8. The method for preparing a stone-like PC brick according to claim 7, characterized in that, The bottom outer wall of the mixing tank (1) is welded with a feeding pipe (13), and a solenoid valve (14) is fixed at the bottom of the feeding pipe (13). A controller (2) is installed on the side of the mixing tank (1).

9. A stone-like PC brick, prepared using the preparation method according to any one of claims 1-8, characterized in that, This includes a base layer mixture for forming an article, a top layer mixture, and a transition layer mixture for forming a transition layer between the base layer and the top layer; The base mixture includes high-strength cement, coarse aggregate with a particle size of 3-8mm, water, and high-efficiency water-reducing agent; The surface layer mixture includes high-strength cement, colored aggregate with a particle size of less than 3 mm, pigments, and additives; The transition layer mixture is composed of 60% base layer mixture and 40% surface layer mixture through incomplete mixing.

10. A stone-like PC brick according to claim 9, characterized in that, The surface layer mixture contains a pre-placed random texture carrier, which is a high-concentration colored cement slurry or inorganic oxide pigment.

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