Texture Formation Method of Artificial Quartz Slab

Abstract

The present invention relates to a method for forming the texture of an artificial quartz slab, comprising placing a colorant on a first surface; and placing a slightly moist quartz mixture on the colorant on the first surface to form a composition of the colorant and the slightly moist quartz mixture. The colorant is placed on a first conveying device; and the method also comprises using the first conveying device to move the colorant to a position below a hopper containing the slightly moist quartz mixture; wherein, after the colorant is moved to a position below the hopper by the first conveying device, a step occurs in which the slightly moist quartz mixture falls on the colorant on the first surface. Compared with the prior art, the present invention has a simple process, reasonable operation, and is more conducive to realizing automated continuous production. The artificial quartz slab prepared by the method has natural and diverse textures, colors and patterns comparable to those of natural stone, and has the production characteristics of higher quality, higher efficiency and lower cost.

Description

Technical Field

[0001] The invention relates to an improved method for manufacturing artificial stone, and in particular to a method for forming the texture of an artificial quartz stone plate. Background Art

[0002] Artificial quartz stone is usually composed of more than 90% natural quartz and about 10% colorants, resins and other additives for adjusting bonding and curing. It is a plate made by negative pressure vacuum, high-frequency vibration molding, and heating curing. It has a hard texture and dense structure. It has the characteristics of wear resistance, pressure resistance, high temperature resistance, corrosion resistance, and anti-penetration that other decorative materials cannot match. It is widely used in public buildings (hotels, restaurants, banks, hospitals, exhibitions, laboratories, etc.) and home decoration (kitchen countertops, washbasins, kitchen and bathroom walls, dining tables, coffee tables, window sills, door frames, etc.). It is a new type of environmentally friendly and green building interior decoration material that is non-radioactive and reusable.

[0003] However, compared with natural stone, artificial quartz stone has a significant problem, that is, it lacks the natural texture or pattern of natural stone, and thus inevitably lacks natural interest. Summary of the invention

[0004] In view of the increasing demand for artificial quartz in modern building decoration, and in view of modern people's obsession with the texture and color of natural stone, the present invention aims to disclose a method for forming texture in the manufacture of artificial quartz slabs, so as to produce products that better meet the aesthetic taste of modern people and the need to pursue natural products with a reasonable and simple process.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A method for forming a texture of an artificial quartz slab comprises the following steps:

[0007] placing a colorant on the first surface; and placing a slightly moist quartz mixture on the colorant on the first surface to form a composition of the colorant and the slightly moist quartz mixture.

[0008] Wherein, the step of placing the colorant on the first surface includes placing the colorant on a first conveying device;

[0009] The method also includes using a first conveying device to move the colorant to a position below a hopper containing a slightly moist quartz mixture; wherein, after the colorant is moved to the position below the hopper by the first conveying device, a step occurs in which the slightly moist quartz mixture falls onto the colorant on the first surface.

[0010] Wherein, the first conveying device comprises a first conveyor belt, and the first surface is an upper surface of the first conveyor belt;

[0011] The step of moving the colorant to a position below the hopper using the first conveying device includes moving the first conveyor belt with the colorant placed on its upper surface.

[0012] Furthermore, the composition of the colorant and slightly moist quartz mixture moves with the first conveyor belt to the downstream end of the first conveyor belt, and falls from the upper surface of the first conveyor belt to the second conveyor belt located below the first conveyor belt.

[0013] Specifically, the step of placing the colorant on the first surface is controlled by a computer processor to form a predetermined colorant pattern stored in a computer memory.

[0014] Specifically, after the slightly wet quartz mixture falls onto the colorant placed on the first surface to form a composition of the slightly wet quartz mixture and the colorant, the composition of the slightly wet quartz mixture and the colorant falls onto the second surface to mix the slightly wet quartz mixture and the colorant.

[0015] Specifically, the second surface may be a surface of a second conveying device.

[0016] Further, the hopper is responsive to control of the computer processor to control the amount of slightly wet quartz mixture that falls onto the colorant on the first surface.

[0017] Specifically, the hopper includes one or more weight sensors to determine the amount of the slightly moist quartz mixture in the inner cavity of the hopper; the weight sensor is connected to a computer processor to control the amount of the slightly moist quartz mixture falling on the colorant on the first surface.

[0018] The present invention also discloses corresponding equipment:

[0019] A texture forming device for an artificial quartz slab comprises a color material arrangement device, a quartz mixture distribution device, and a material receiving and conveying device; the material receiving and conveying device comprises a first surface;

[0020] The device is in a first state, the first surface passes under the colorant placement device and colorant is placed on the first surface to form a texture or pattern;

[0021] When the device is in a second state, the first surface passes under the quartz mixture dispensing device, and quartz mixture is arranged on the texture or pattern formed on the first surface in the first state to form a combination of colorant and quartz mixture.

[0022] Specifically, the material receiving and conveying device includes a first conveying device and a driving motor thereof, and the first surface is located on the first conveying device and moves with the first conveying device;

[0023] The texture or pattern formed by the colorant in the first state moves along the first surface to below the quartz mixture dispensing device and enters the second state.

[0024] Specifically, the first conveying device includes a first conveyor belt, and the first surface is the first conveyor belt or a surface on the first conveyor belt. Then the color material arrangement device is arranged at a position further upstream of the first conveyor belt along its conveying direction relative to the quartz stone mixture distribution device.

[0025] Further, the material receiving and conveying device includes a second surface, which is located below the first surface;

[0026] When the device is in the third state, the composition of the colorant and the quartz mixture moves along with the first surface to the conveying end of the first conveyor belt; when the device is in the fourth state, the composition falls onto the second surface.

[0027] Furthermore, the material receiving and conveying device includes a second conveying device and a driving motor thereof, the second conveying device includes a second conveyor belt, and the second surface is the second conveyor belt or a surface thereon.

[0028] Furthermore, the second conveying device or the second surface includes tracks arranged on both sides along its length direction; the first conveying device or the first surface includes a rolling device or a sliding device corresponding to the track and a driving motor; the first conveying device or the first surface is seated on the track through the rolling device or the sliding device.

[0029] When the device is in the fourth and fifth states, the first conveying device or the first surface is seated on the track through the rolling device or the sliding device and rolls or slides relative to the second conveying device or the second surface under the drive of its motor.

[0030] Specifically, the first conveying device includes a four-roller structure;

[0031] The four-roller structure includes a driving roller, a first driven roller, a second driven roller and a third driven roller, which are sequentially connected through a first conveyor belt;

[0032] The active roller is located at the upstream starting end of the first conveyor belt and is connected to the driving motor;

[0033] The other three rollers are driven rollers located at or close to the downstream end of the first conveyor belt; the first driven roller is close to the downstream end of the first conveyor belt and has a diameter equivalent to or the same as that of the active roller; the second driven roller is located at the downstream end of the first conveyor belt and has a diameter smaller than that of the other three rollers; the third driven roller is a belt tensioning roller, which is located below the first driven roller and has a diameter equivalent to or the same as that of the first driven roller, and together with the first driven roller, clamps the first conveyor belt and is used to adjust the tension of the first conveyor belt.

[0034] In this way, the first driven roller and the third driven roller (i.e., the belt tensioning roller) can generate sufficient surface friction to facilitate the movement of the first conveyor belt carrying the mixture; the second driven roller with a relatively small diameter placed at the lowest point is conducive to achieving a smaller height difference between the first conveyor belt and the second conveyor belt, thereby reducing the height of the mixture block falling to reduce the damage to the texture or pattern on the composite material.

[0035] The four-roller structure, by specifically setting the roller diameter of the driven roller, the height arrangement and the tension of the first conveyor belt therebetween, on the one hand drives the first conveyor belt to transport the stones and colorants located thereon, and on the other hand is used to adjust the height difference between the first surface and the second surface, so as to affect the final formation of the texture or pattern on the resulting slab or composite material.

[0036] Specifically, the quartz stone mixture dispensing device comprises an open hopper; an opening is arranged at the lower part of the hopper, and a discharger may be arranged inside the opening.

[0037] The discharger may be a rotating blade driven by a motor. For example, in the second state, the motor drives the rotating blade in the hopper to push or deliver the quartz stone mixture out of the outlet of the hopper.

[0038] Furthermore, the quartz stone mixture dispensing device also includes a weight sensor device, which is located at the bottom of the quartz stone mixture dispensing device and is used to feedback the dispensing amount of the stone mixture.

[0039] Preferably, the device further comprises a computer processor and a computer memory and a computer interaction device respectively connected thereto;

[0040] The computer processor is connected to the colorant arrangement device, the quartz mixture dispensing device and the material receiving and conveying device respectively; and is configured to control the corresponding components of the colorant arrangement device, the quartz mixture dispensing device, and the material receiving and conveying device, including, for example, a motor for rotating blades of a hopper, a colorant arrangement device, a first conveying device motor, a second conveying device motor, a motor for driving the first conveying device or the first surface to move relative to the second conveying device or the second surface, and a weight sensor, etc., to perform corresponding control according to the program pre-stored in the computer memory or the instructions input by the user through the computer interactive device.

[0041] Compared with the prior art, the texture forming method of the artificial quartz slab disclosed in the present invention has simple process, reasonable operation, simpler equipment structure, and is more conducive to realizing automated continuous production, greatly improving production efficiency and facilitating effective allocation of production resources, thereby reducing production costs. The artificial quartz slab prepared by the method and equipment has natural and diverse textures, colors and patterns comparable to those of natural stone, and is equipped with the use of automated mechanical equipment under the control of a computer processor, and has the production characteristics of higher quality, higher efficiency and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a simplified structural diagram of a device in a first state according to an embodiment of the present invention;

[0043] Figure 2 yes Figure 1 A simplified structural diagram of the device shown in a second state.

[0044] Figure 3 yes Figure 1 A simplified structural diagram of the device shown in the third state.

[0045] Figure 4 yes Figure 1 A simplified structural diagram of the device shown in a fourth state.

[0046] Figure 5 yes Figure 1 A simplified structural diagram of the device shown in a fifth state.

[0047] Figure 6 yes Figure 1 A simplified structural diagram of the device shown in the sixth state.

[0048] Figure 7 yes Figure 1 A side view of a portion of the apparatus shown.

[0049] Figure 8 A simplified block diagram of a computer processor, computer memory, and computer interaction devices, as well as the Figure 1 Schematic diagram of the various components of the device. DETAILED DESCRIPTION

[0050] Figure 1 is a simplified structural diagram of a device 1 according to an embodiment of the present invention, showing that the device 1 is in a first state.

[0051] The apparatus 1 includes a toner device 2 including a toner arranging device 2a and mounting columns 2b and 2c.

[0052] The apparatus 1 further comprises a hopper 4, which contains a material; in at least one embodiment, the material is a slightly moist quartz mixture 6 of quartz particles, quartz powder, a binder (such as a resin), a colorant and / or other additives. The hopper 4 has a bottom opening serving as a discharge port for the slightly moist quartz mixture 6, and the hopper has a rotating blade driven by a motor 5, which controls the amount, speed and time of discharge of the slightly moist quartz mixture 6 from the hopper 4, and which may be inside the inner cavity 4a of the hopper 4, as is well known in the art and not shown in the figure. The hopper 4 may be similar or identical to the dispensing device 32 in U.S. Patent No. 9,707,698 (Chinese equivalent patent application CN 107696242 A), see the patent specification. Figure 2 ; This patent is incorporated herein by reference. The hopper 4 may also include the same as the aforementioned U.S. Patent No. 9,707,698 (Chinese equivalent patent application CN 107696242 A) Figure 2 The device 32d shown in FIG. 1 is similar or identical to the device 32d shown in FIG. 1 and is also incorporated herein by reference; the device may be a rotating blade for releasing and / or dropping the slightly wet quartz mixture 6 onto the upper surface 10a of the conveyor belt 10. The motor 5 described in the present application may be the same as the motor 5 of U.S. Patent No. 9,707,698 (Chinese equivalent patent application CN 107696242 A). Figure 2 The hopper 4 may also include a weight sensor 28, which may include, for example, a motor 32b similar to or identical to that shown in FIG. Figure 7 The weight sensors 28a, 28b, 28c and 28d shown in the figure are located at the bottom of the legs connected to the hopper to sense the weight of the material located in the hopper cavity 4a. The weight sensors 28a-d are configured to be connected to the computer processor 102, such as Figure 8 As shown, all the materials to be dropped into the inner cavity 4 a of the hopper 4 to form the slab can be controlled by the computer processor 102 .

[0053] The device 1 may further include a first conveying device, which may specifically include a platform 8, a conveyor belt 10 and a four-roller structure, wherein the four-roller structure includes an active roller 17 rotating on shafts 17a, 30a, 15a and 32a, a first driven roller 30, a second driven roller 15, and a third driven roller (i.e., a belt tensioning roller) 32, such as Figure 7 The device 1 may further include: a first conveying device motor 3 for rotating the driving roller 17 on the shaft 17a, so that the conveyor belt 10 rotates above and below the platform 8. The platform 8 may be placed on the wheels 9, 11, 34 and 36, as shown in FIG. Figure 7 Wheels 9 and 11 are seated on track 18, while wheels 34 and 36 are seated on track 38, so that platform 8 moves or slides relative to platform 12 along direction D1 or D2, as shown in FIG. Figure 1 The motor 40 can drive the platform 8 to move relative to the platform 12 under the control of the computer processor 102 .

[0054] The device 1 may further include a platform 12 , a conveyor belt 14 , a driven roller 20 and a driving roller 22 , and a second conveyor motor 13 for rotating the driving roller 22 on an axis, thereby rotating the conveyor belt 14 up and down the platform 12 .

[0055] Figure 2 yes Figure 1 The device 1 is shown in a simplified structural diagram in a second state. Figure 3 yes Figure 1 The device 1 is shown in a simplified structural diagram in a third state. Figure 4 yes Figure 1 The device 1 is shown in a simplified structural diagram in a fourth state. Figure 5 yes Figure 1 The device 1 is shown in a simplified structural diagram in a fifth state. Figure 6 yes Figure 1 The device 1 is shown in a simplified structural diagram in a sixth state. Figure 7 yes Figure 1 A side view of a portion of the device 1 is shown.

[0056] Figure 8 The simplified block diagram 100 is a diagram of the components of the apparatus 1 that respond to the control of the computer processor 102 to execute the program or data in the computer memory 104 or to execute the corresponding instructions according to the user's operation of the computer interaction device 106. The computer processor 102 is configured to be connected to the motor 5 for controlling the hopper, the color material placement device 2a, the first conveyor motor 3, the second conveyor motor 13, the motor 40 for driving the first conveyor platform 8 to move relative to the platform 12, and the weight sensor 28, or the weight sensors 28a-d, respectively, and the computer processor 102 is connected to the computer memory 104 and the computer interaction device 106, respectively.

[0057] In operation, Figure 1 and Figure 4 As shown, the computer processor 102 can control the colorant placement device 2a to make the colorant 22 fall according to a specified programming pattern, such as determined by a computer program and data stored in the computer memory 104 and / or determined by a user issuing instructions through a computer interactive device 106, and the computer interactive device 106 may include, for example, a computer mouse and a computer keyboard. The colorant 22 can fall onto the upper surface 10a of the conveyor belt 10 in a specific pattern, and the upper surface 10a is moved along the conveyor belt 10. Figure 1 The conveyor belt 10 can be driven by the motor 3 , which is configured to execute computer programs and data stored in the computer memory 104 and / or execute instructions issued by the user through the computer interaction device 106 in response to the control of the computer processor 102 .

[0058] like Figure 1 As shown, as the colorant 22 falls, the upper portion or upper surface 10a of the conveyor belt 10 moves so that the pattern displayed by the pattern parts 22a, 22b, 22c and 22d formed by the falling colorant is formed on the upper portion or upper surface 10a of the conveyor belt 10. The colorant device 2 or the colorant arrangement device 2a can be replaced by a conventional industrial robot to transport or distribute the colorant forming a specific pattern or texture on the surface or upper portion or upper surface 10a of the conveyor belt 10.

[0059] Typically, after some or all of the falling colorant 22 has formed a pattern on the upper portion or surface 10a of the conveyor belt, the pattern or texture 22a-d passes under the hopper 4, and the slightly wet quartz mixture 6 falls onto the pattern 22a-d formed by the colorant, and the two combine to form a composite material 24, a portion of which is shown in FIG. Figure 2 , Figure 3 The amount of slightly wet quartz mixture 6 falling from the hopper 4 can be controlled by the motor 5 and the weight sensors 28a-d, such as Figure 1 and can be controlled by the computer processor 102 according to a computer program and / or data stored in the computer memory 104, for example in a predetermined manner, and / or according to instructions from a user operating the computer interactive device 106.

[0060] The composite material 24 moves along the upper portion or upper surface 10a of the conveyor belt 10 to the end 8a of the platform 8 along the direction D1, as shown in FIG. Figure 3 As shown, it then gradually falls from the conveying end of the conveyor belt 10, that is, the end or edge 8a of the platform 8 to the upper surface 14a of the conveyor belt 14, as shown in FIG. Figure 4When the initial portion of the composite material 24 reaches the end or edge 8a of the platform due to the movement of the conveyor belt 10, in at least one embodiment, the platform 8 is driven by the motor 40 to move under the control of the computer processor 102 in response to the computer program in the computer memory 104 and / or the user instruction from the interactive device 106, and the composite material 24 falls and is evenly or according to the design requirements, spread on the entire area of ​​the upper surface 14a of the conveyor belt 14 with a length L1 and a width W1, as shown in FIG. Figure 4 and Figure 5 The width W1 may be the distance between the barrier wall of the track 38 and the barrier wall of the track 18. The track barrier wall may prevent the composite material 24 deposited or arranged on the upper surface 14a of the conveyor belt 14 from falling from the conveyor belt 14 onto the tracks 18 and 38.

[0061] In at least one embodiment, the combination material 24 falling from the conveyor belt 10 (above and below the platform 8) to the conveyor belt 14 (above and below the platform 12) will cause the colorant 22 and the slightly wet quartz mixture 6 or the combination material 24 to mix together, and this mixing will also be affected by the distance between the conveyor belt 10 and the conveyor belt 14. A shorter falling distance will prevent the colorant from being too dispersed, resulting in a slab or material combination 42 with clearer lines and more defined patterns formed on the conveyor belt upper surface 14a on the platform 12. A larger falling distance will cause the colorant to be more dispersed, resulting in a slab or material combination 42 with blurred lines or unclear patterns formed on the conveyor belt upper surface 14a on the platform 12. The moving speeds of the platform 8, conveyor belt 10 and conveyor belt 14 driven by motors 5, 3, 13 respectively can be controlled by the computer processor 102, thereby determining the amount of colorant 22 deposited per unit area, so that after falling from the conveyor belt 10 to the conveyor belt 14, the combination material 42 finally forms different patterns.

[0062] Usually, a smaller drop height is required between the upper portion or upper surface 10a of the conveyor belt 10 and the upper portion or upper surface 14a of the conveyor belt 14, so at least one embodiment configures and uses a four-roller structure (including a driving roller 17 and a first driven roller 30, a second driven roller 15, and a third driven roller (i.e., a belt tensioning roller) 32), such as Figure 7 As shown. Generally, it is preferred that the first driven roller 30 and the third driven roller 32 have a much larger diameter than the second driven roller 15, and the first driven roller 30 and the third driven roller 32 have a cylindrical shape, and the roller side surface thereof has a greater traction and / or friction force to drive the conveyor belt 10; the second driven roller 15 is cylindrical in shape and has a smaller diameter than the first driven roller 30 and the third driven roller 32, so that the falling distance from the upper surface 10a of the conveyor belt 10 (which is inclined toward the end 8a of the platform 8) to the upper surface 14a of the conveyor belt 14 is smaller.

[0063] The color material arrangement device 2a preferably includes a plurality of discharge heads 44, the discharge heads 44 including heads 44a, which respond to the control of the computer processor 102 to arrange color materials, etc. on the upper part or upper surface 10a of the conveyor belt 10 according to the final aesthetic design requirements (similar to dot matrix printing) when the conveyor belt 10 of the first conveyor device moves. The color material device 2 can also be replaced by a conventional industrial robot to transport or print a specific pattern composed of color materials on the upper surface 10a of the conveyor belt 10. When the colorant 22 deposited on the upper portion 10a of the conveyor belt 10 moves downstream along the conveyor belt 10 in the direction D1, the hopper 4 containing the slightly moist quartz mixture 6 is positioned above the conveyor belt 10 to arrange or deposit a controlled amount of the slightly moist quartz mixture 6 on the pattern formed by the colorant 22 on the upper surface 10a of the conveyor belt 10; or, instead of using the hopper 4, another conveying device or belt (not shown) is used above the conveyor belt 10 to transport the slightly moist quartz mixture and evenly distribute it on the pattern 22a-d formed by the colorant. When the composition 24 including the slightly moist quartz mixture 6 and the colorant on the upper portion or upper surface 10a of the conveyor belt 10 reaches the end 8a of the platform 8, as shown in FIG. Figure 3 As shown, it will fall onto the upper portion or upper surface 14a of the conveyor belt 14 below, and in at least one embodiment, it forms a rectangular structure of composite material 24. The platform 8 can move along the tracks 18 and 38 to evenly arrange the composite material 24 on the upper portion or upper surface 14a of the conveyor belt 14. The formed slab or rectangular structure of composite material 24 is usually further formed and transferred to a vacuum press for further processing. The platform 8 can move back along the tracks 38 and 18 so that the edge 8a of the platform 8 returns to Figure 1 The position of the next slab is configured so that the pattern 26 formed by the colorant on the next slab is configured as Figure 3 Alternatively, it can be a continuous operation, and the next batch of colorants forms a pattern 26, such as Figure 3 As shown, there are branching patterns 26a-d.

[0064] In one or more embodiments of the present invention, first, the colorant is deposited or arranged on the upper surface 10a of the conveyor belt 10, usually in a specific predetermined pattern, and then the slightly moist quartz mixture 6 is dropped or arranged from the hopper 4 or other material distribution device such as a conveyor belt located on the top of the colorant; then dropped from the conveyor belt 10 to the conveyor belt 14, so that the colorant 22 and the slightly moist quartz mixture 6 or its combination 24 are mixed together or more thoroughly mixed together to form a material 42, such as Figure 5As shown in FIG. 1 , this depends on the distance between the upper surface 10a of the conveyor belt 10 and the upper surface 14a of the conveyor belt 14. A shorter falling distance prevents the colorant or its pattern from being too dispersed, thereby obtaining a clearer line and a pattern with a more distinct outline. A larger falling distance makes the colorant 22 in the composition 24 more dispersed, resulting in blurred lines and unclear patterns in the final composition 42, such as Figure 5 The moving speeds of the platform 8, the conveyor belt 10 and the conveyor belt 14 can respond to the control of the computer processor 102 to determine the amount of colorant 22 arranged per unit area, so as to finally form different textures or patterns after the composite material 24 descends from the upper surface 10a of the conveyor belt 10 to the upper surface 14a of the conveyor belt 14.

[0065] In at least one embodiment, the drop of the colorant and slightly moist quartz mixture material composition 24 from the conveyor belt 10 to the conveyor belt 14 may cause some tumbling and / or mixing of the colorant and slightly moist quartz mixture material, but should not cause thorough mixing of the colorant and slightly moist quartz mixture material. As opposed to thorough mixing, some tumbling and / or mixing may be beneficial to the final slab texture or pattern aesthetic design.

[0066] Although the present invention has been described with reference to specific illustrative embodiments of the present invention, many changes and modifications of the present invention will become apparent to those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended to include all such changes and modifications that belong to this patent and may reasonably and properly be included within the scope of the present invention's contribution to the art.

Claims

1. A method for forming a texture of an artificial quartz slab, comprising the following steps: Placing a colorant on the first surface to synthesize a specific texture; placing the slightly wet quartz mixture on the specific texture composed of the colorant on the first surface to form a composite material of the colorant and the slightly wet quartz mixture; and The composite material formed by the mixture of the colorant and slightly wet quartz stone falls onto the second surface to form a material mixture. During this process, the height difference between the first surface and the second surface is adjusted according to the material mixture to be formed to control the degree of overturning and mixing of the composite material during the falling process.

2. The method of claim 1, wherein: The step of placing the colorant on the first surface to synthesize a specific texture is executed in response to the control of the computer processor to execute the program and data stored in the computer memory.

3. The method of claim 1, wherein: The step of placing a colorant on the first surface to synthesize a specific texture includes placing the colorant on a first conveying device; The method also includes moving the specific texture of the colorant composition to a position below a hopper containing a slightly moist quartz mixture using a first conveying device; wherein, after the specific texture synthesized by the colorant is moved to a position below the hopper by the first conveying device, the step of causing the slightly wet quartz mixture to fall on the specific texture synthesized by the colorant occurs; The first conveying device includes a first conveyor belt, and the first surface is an upper surface of the first conveyor belt.

4. The method of claim 3, further comprising The composite material of the mixture of the colorant and slightly wet quartz moves along with the first conveyor belt to the downstream end of the first conveyor belt, and the composite material of the mixture of the colorant and slightly wet quartz falls from the upper surface of the first conveyor belt to the upper surface of the second conveyor belt located below the first conveyor belt; The second conveying device includes a second conveyor belt, and the second surface is an upper surface of the second conveyor belt.

5. The method of claim 3, wherein: The computer processor executes the program and data stored in the computer memory to control the amount of slightly wet quartz mixture falling from the hopper onto the specific texture synthesized by the colorant on the first surface.

6. The method of claim 3, wherein: The hopper includes one or more weight sensors for determining the amount of slightly moist quartz mixture in the hopper cavity; the weight sensors respond to the control of the computer processor and execute the program and data stored in the computer memory to control the amount of slightly moist quartz mixture falling on the specific texture synthesized by the colorant on the first surface.

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