Automated Adhesion Production Line for Semi-Dry Processing of Permeable Concrete Imitation Stone Bricks

Abstract

This invention discloses an automated coating production line for semi-dry concrete imitation stone permeable bricks, ensuring the permeability after coating; it includes a first chain conveyor (1), a destacking platform mechanism (2), a first conveying drive device (3), a permeable brick laser cleaning chain conveyor line (4), a laser emitter mounting gantry (5), a continuous laser generator (6), a second conveying drive device (7), a permeable brick conveying trolley (8), a polyurethane resin spraying gantry (9), a polyurethane resin spraying nozzle (10), an ultraviolet emitter mounting gantry (11), an ultraviolet emitter (12), a permeable brick conveying and drying chain conveyor (13), a stacking platform mechanism (14), and a permeable brick stacking conveyor; this invention either constructs a porous mesh cover on the top surface of the permeable brick, or forms a mesh organic resin coating layer that retains the entrance to the existing pores on the top surface of the permeable brick.

Description

Technical Field

[0001] This invention relates to a semi-dry method for producing concrete imitation stone permeable bricks, and particularly to an automatic attachment line and method for the permeable surface of semi-dry method produced concrete imitation stone permeable bricks. Background Technology

[0002] With the advancement of sponge cities, permeable bricks have been widely used in public places such as pedestrian walkways and open-air plazas in parks. In order to create a beautiful ground environment, imitation stone permeable bricks or slabs have emerged. Imitation stone permeable bricks include ceramic, resin and concrete types. Among them, concrete permeable bricks stand out due to their low price and cost, becoming the main product in the market. The production of concrete imitation stone permeable bricks generally adopts a semi-dry non-fired pressing molding process, which is completed by a vibratory press. The specific production process is as follows: (1) First, mix the main materials of the brick body, including stones, etc. Cement and water are mixed into a semi-dry material, and then the mixed semi-dry material is placed into the brick forming mold in the vibratory press. It is pre-pressed by the pre-press plate on the vibratory press to form the surface layer material space on the top of the brick; (2) White quartz stone (black quartz stone or natural colored stone), cement (white cement) and reinforcing additives are added to mix into a surface layer semi-dry material, and the surface layer semi-dry material is added into the surface layer material space on the top of the mold; (3) The pre-press plate on the vibratory press is pressed down to the design pressure for the second time. At the same time, the overall vibration of the brick mold is controlled so that the mold The sand and gravel inside the brick are tightly bound together with cement to form a brick with a certain strength. In the above semi-dry process of making concrete imitation stone bricks, the overall vibration of the brick mold is a very critical step. The main purpose of vibration is to make the sand and gravel particles in the concrete inside the mold more compact, thereby improving the density and strength of the concrete. The vibration time of the mold is generally about 20-30 seconds, and it is judged when the surface of the brick inside the mold no longer sinks significantly, no more air bubbles appear, and mortar appears on the surface layer. The above three characteristics are necessary process requirements for the vibratory press when making permeable imitation stone bricks. Because the stone particles selected in the main material of the brick are relatively large, large permeable pores will be formed during the above pressing process. However, the thickness of the top layer of the brick is relatively thin, generally about 6 mm thick. Therefore, the stone particles selected in the surface layer are relatively small, generally 20-40 mesh. During the above vibration pressing process, the contact points of adjacent stones in the surface layer are bonded together by cement through compression. The density of this cement paste that plays a role in bonding adjacent stones is relatively high, generally between 2.4 g / cm³ and 2.6 The density is between g / cm³; where adjacent stones cannot touch, small-diameter permeable pores are formed. The pressing and molding of the entire permeable brick must ensure that the brick's strength meets design requirements and that the molded brick is permeable. Therefore, the aforementioned mortar on the surface of the brick is a manifestation of achieving these effects. Existing technology does not have a good method for dealing with the mortar attached after the brick is pressed and vibrated. During the subsequent brick drying process, this surface mortar forms solidified mortar spots on the top of the brick surface, with a thickness of about 100 micrometers. This directly affects the anti-stone effect of the surface layer and reduces the appearance quality of the imitation stone brick. At the same time, some surface mortar flows into the small-diameter permeable pores on the surface layer and blocks the permeable pores after drying. Although the density of this solidified mortar is much lower than that of the cement that binds the adjacent stones, it directly causes a significant decrease in the permeability of the permeable brick surface layer. How to scientifically deal with the solidified mortar formed on the surface due to the vibration during brick molding has become a problem that needs to be solved on site. .

[0003] Laser welding is a high-efficiency and precision welding method that uses a high-energy-density laser beam as a heat source. The principle of laser welding is as follows: (1) Laser generation: The laser generator generates a high-energy laser beam; (2) Laser beam transmission: The laser beam is transmitted to the working area through transmission elements such as optical fiber or reflector; (3) Focusing: The laser beam is focused by the focusing lens to form a spot with high energy density; (4) Welding process: When the spot irradiates the surface of the material to be welded, the material melts rapidly and forms a weld; (5) At the same time, the laser welding machine is also equipped with a corresponding control system to ensure the precise control and stable output of the laser beam; The principle of laser welding can be divided into laser heat conduction welding and laser deep penetration welding; The principle of heat conduction laser welding is: the laser radiation heats the surface to be processed, and the surface heat diffuses into the interior through heat conduction. The laser itself is a high-frequency energy output, and it can generate extremely high temperatures (at the focal point) through focusing; If the laser directly irradiates the object, the most direct change is that the object's temperature rises. Over a long period of time, objects of different materials will deform, melt, burn, etc.; If the laser is irradiated through the focal point, the object at the focal point will have a temperature rise in a short time. The energy level is very high; most substances will vaporize or carbonize directly at the focal point. Most metals will vaporize at the focal point, creating a molten pit. A small number of metals with high laser reflectivity, such as copper and aluminum, will vaporize very little, leaving only a small spot. Therefore, many laser heads are protected with copper nozzles. If the energy is high enough, the laser at the focal point can vaporize all substances. If the irradiation point is not at the focal point, the only changes in the state of matter caused by the laser are temperature increases and heating. Whether a laser can penetrate an object depends on the object's absorption of the laser. Furthermore, if an object has high transmittance to laser light, then the energy absorbed by the laser when passing through the object will be small enough to allow it to penetrate. For example, glass does not absorb in the visible light band, so lasers can penetrate glass. Similarly, silicon is considered to have no absorption in the communication band (around 1550nm), so lasers can penetrate stone. How to combine the principle of laser heat conduction welding to deal with the solidified mortar formed on the surface of permeable bricks during molding vibration, and to open up the small permeable pores in the permeable brick surface layer that are blocked in this process, has become a new topic worthy of in-depth research.

[0004] Permeable bricks, made of inorganic materials, used for paving various types of ground surfaces, require anti-slip, wear-resistant, and durable properties during use. However, due to prolonged exposure to rain, sun, freeze-thaw cycles, and carbonization, their surface structure is prone to becoming porous and shedding sand, shortening their lifespan. To overcome these defects, technicians in the field typically spray a weather-resistant organic resin material onto the surface of the permeable bricks, forming a protective coating to achieve anti-slip, wear-resistant, and weather-resistant properties. While this existing coating technology significantly enhances the weather resistance of the brick surface, it also leads to a substantial decrease in the permeability of the surface layer. Solving this problem remains a challenge for technicians in the field.

[0005] Stone-like permeable bricks belong to a traditional industry. Green, environmental protection and energy conservation are principles that need to be followed in the production of permeable bricks. Low-cost and high-efficiency production is also a primary issue that enterprises need to consider for survival. The mass production of stone-like permeable bricks used for paving is large and the on-site operation is labor-intensive. When covering stone-like permeable bricks, how to design an automated production line to achieve the goal of low cost and high efficiency has become a problem that needs to be considered in production practice. Summary of the Invention

[0006] This invention provides an automated coating production line for semi-dry concrete permeable bricks made with imitation stone, which achieves low-cost and high-efficiency weather-resistant organic resin coating of imitation stone permeable bricks and ensures the permeability after coating.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] An automated production line for attaching semi-dry permeable concrete bricks to resemble stone surfaces includes a first chain conveyor on which stacks of raw permeable bricks are conveyed. A destacking platform mechanism is located to the right of the first chain conveyor. Below the destacking platform mechanism is a first conveying drive device for the destacking permeable bricks. To the right of the first conveying drive device is a permeable brick laser cleaning chain conveyor line. A laser emitter mounting gantry is installed on the permeable brick laser cleaning chain conveyor line, and a continuous laser generator is mounted on the laser emitter mounting gantry. Further details are provided on the right side of the permeable brick laser cleaning chain conveyor line. A second conveying drive device is provided on the side. A permeable brick conveying trolley is provided on the right side of the second conveying drive device. A polyurethane resin spraying gantry and an ultraviolet emitter mounting gantry are respectively provided on the travel route of the permeable brick conveying trolley. A polyurethane resin spraying nozzle is provided on the polyurethane resin spraying gantry, and an ultraviolet emitter is provided on the ultraviolet emitter mounting gantry. A permeable brick conveying and drying chain conveyor is provided on the right side of the ultraviolet emitter mounting gantry. A palletizing platform mechanism is provided on the right side of the permeable brick conveying and drying chain conveyor. A permeable brick post-palletizing conveyor is provided below the palletizing platform mechanism.

[0009] When the concrete imitation stone permeable brick passes directly under the continuous laser generator, it is irradiated by the continuous laser emitted by the continuous laser generator.

[0010] The focal point of the laser beam emitted by the continuous laser generator is set in the solidified mortar spot on the surface of the concrete imitation stone permeable brick that passes directly below the continuous laser generator; or, the focal point of the laser beam emitted by the continuous laser generator is set on the solidified mortar in the permeable pores of the concrete imitation stone permeable brick that passes directly below the continuous laser generator.

[0011] A pulsed high-pressure impact air pump is installed on the laser emitter mounting gantry. The high-pressure impact airflow emitted by the pulsed high-pressure impact air pump has an angle of 60 degrees with the surface of the imitation stone permeable brick.

[0012] The second conveying drive device controls the permeable brick conveying trolley to move from left to right through the polyurethane resin spraying gantry. At the same time, the polyurethane spraying equipment sprays weather-resistant polyurethane through polyurethane resin spray nozzles onto the surface of the stone-like permeable bricks, thereby achieving an adhesion coating on the surface of the stone-like permeable bricks.

[0013] The polyurethane spraying equipment is a polyurethane spraying equipment that can input two-component materials. The two-component polyurethane spraying equipment is equipped with polyether polyol at a temperature of 60℃-70℃ and aliphatic polyisocyanate at a temperature of 60℃-70℃. The viscosity of the polyether polyol is 3500mPa.s. Furthermore, the polyether polyol and aliphatic polyisocyanate are mixed in a 1:1 weight ratio in the polyurethane resin spray nozzle and then sprayed out.

[0014] The spray pressure after mixing polyether polyol and aliphatic polyisocyanate is 25 MPa; the time for polyether polyol and aliphatic polyisocyanate to leave the polyurethane resin spray nozzle and reach the top surface of the permeable brick is 0.8-1.5 seconds; the weight of the weather-resistant polyurethane resin mixture uniformly sprayed on the surface of each square meter of stone-like permeable brick is 80-110 grams.

[0015] When the covered stone-like permeable bricks are conveyed to the bottom of the stacking platform mechanism, the weather-resistant polyurethane resin of the cover is already dry.

[0016] An automated method for attaching a surface coating to semi-dry permeable concrete bricks (simulated stone), comprising a first chain conveyor, a destacking platform mechanism, a first conveying drive device, a permeable brick laser cleaning chain conveyor line, a laser emitter mounting gantry, a continuous laser generator, a second conveying drive device, a permeable brick conveying trolley, a polyurethane resin spraying gantry, a polyurethane resin spraying nozzle, an ultraviolet emitter mounting gantry, an ultraviolet emitter, a permeable brick conveying and drying chain conveyor, a stacking platform mechanism, and a permeable brick post-stacking conveyor; characterized by the following steps:

[0017] The first step involves placing the concrete imitation stone permeable bricks, which are produced using a semi-dry, non-fired pressing process, in a stack on the first chain conveyor. Then, they are transported to the destacking platform mechanism to be destacking. After destacking, the imitation stone permeable bricks are placed with the imitation stone surface facing up and are conveyed by the first conveying drive device and laid flat on the permeable brick laser cleaning chain conveyor line.

[0018] The second step involves laying the permeable stone bricks, with the surface facing upwards, on the laser cleaning chain conveyor line. As the laser emitter is installed on the gantry frame, the continuous laser emitted by the continuous laser generator scans and irradiates the surface of the permeable stone bricks. Furthermore, the focal point of the laser beam emitted by the continuous laser generator is set on the solidified mortar in the permeable pores of the concrete permeable stone brick surface that passes directly below the continuous laser generator.

[0019] The third step is to install a pulsed high-pressure impact air pump on the laser generator mounting gantry. After the laser scanning of the imitation stone permeable brick is completed, it is cleaned by high-pressure impact airflow. The angle between the high-pressure impact airflow emitted by the pulsed high-pressure impact air pump and the surface of the imitation stone permeable brick is 60 degrees.

[0020] Step 4: The cleaned permeable bricks are transported to the permeable brick conveying trolley by the second conveying drive device. The permeable brick conveying trolley is started and moves from left to right.

[0021] Step 5: When the permeable brick conveyor trolley travels directly under the polyurethane resin spraying gantry, the polyurethane resin spray nozzles, under the control of the polyurethane resin spraying device, spray weather-resistant polyurethane resin onto the surface of the stone-like permeable bricks. The weight of the weather-resistant polyurethane resin evenly sprayed on the surface of each square meter of stone-like permeable brick is 80-110 grams, thus completing the surface coating of the permeable bricks.

[0022] Step 6: After the stone-like permeable bricks are covered, they are conveyed to the permeable brick conveying and drying chain conveyor, where they are dried while being conveyed. When the stone-like permeable bricks are conveyed to the bottom of the stacking platform mechanism, the weather-resistant polyurethane resin cover is completely dry.

[0023] Step 7: The palletizing platform stacks the dried permeable stone bricks into a pile and transfers them to the permeable brick stacking conveyor. Finally, the bricks are packaged and shipped.

[0024] The polyurethane spraying equipment is a polyurethane spraying equipment that can accept two-component materials. The equipment contains polyether polyol at a temperature of 60℃-70℃ and aliphatic polyisocyanate at a temperature of 60℃-70℃. The viscosity of the polyether polyol is 3500 mPa·s. The polyether polyol and aliphatic polyisocyanate are mixed in a 1:1 weight ratio in the polyurethane resin spray nozzle before being sprayed. The spraying pressure of the polyurethane spraying equipment nozzle is 25 MPa.

[0025] Another technical solution is: the polyurethane spraying equipment is a polyurethane spraying equipment that can input single-component materials, and selects UV polyurethane resin with a viscosity of 300-500 mPa.s as the adhesion material on the surface of the permeable brick; when the sprayed stone-like permeable brick is conveyed to the gantry frame under the ultraviolet emitter, the ultraviolet rays emitted by the ultraviolet emitter irradiate the surface of the stone-like permeable brick on the permeable brick conveyor trolley, causing the UV polyurethane resin on the surface of the stone-like permeable brick to solidify.

[0026] The time it takes for the weather-resistant polyurethane resin to leave the nozzle and reach the surface of the permeable brick is 0.8-1.5 seconds.

[0027] This invention leverages the low density of the solidified mortar in the stone-like surface layer of permeable concrete bricks produced using the semi-dry method, and cleverly combines these two principles with the thermal conductivity characteristics of a continuous laser beam's focal point. While ensuring the strength of the permeable brick's stone-like surface layer, it scientifically and precisely adjusts the laser beam's focus and calculates the laser power required to break down the solidified mortar. The laser breaks down the solidified mortar, and a pulsed air jet cleans it, thus opening up the surface pores blocked by the solidified mortar and removing the surface solidified mortar. This allows for better exposure of the top of the surface stones, achieving a realistic stone-like effect on the permeable brick surface. Furthermore, this invention utilizes a unique weather-resistant polyurethane resin mixture formulation, supplemented by specific spraying temperatures and pressures of this resin mixture. By scientifically controlling the force, spray distance, and spray volume, a porous mesh cover is constructed on the top surface of the permeable brick. This invention, through the selection of a UV polyurethane resin with low viscosity, allows resin sprayed onto the permeable brick surface that has entered the existing pores to be channeled away. Ultraviolet light is then applied to the top surface of the permeable brick, forming a mesh-like organic resin cover layer that retains the entrances to the existing pores on the top surface. This achieves permeability of the attached cover, ensuring the weather resistance and anti-slip properties of the permeable brick surface. This invention enables automated attachment of the stone-like permeable brick cover, improving production efficiency, reducing production costs, significantly enhancing the stone-like realism of the surface layer, and ensuring that the permeability does not decrease after the cover is applied. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings:

[0030] An automated production line for attaching semi-dry permeable concrete bricks to resemble stone surfaces includes a first chain conveyor 1, on which stacks of raw permeable bricks are conveyed. A destacking platform mechanism 2 is located to the right of the first chain conveyor 1. Below the destacking platform mechanism 2 is a first conveying drive device 3 for the destacking permeable bricks. To the right of the first conveying drive device 3 is a permeable brick laser cleaning chain conveyor 4. A laser emitter mounting gantry 5 is installed on the permeable brick laser cleaning chain conveyor 4. A continuous laser generator 6 is installed on the laser emitter mounting gantry 5. To the right of the permeable brick laser cleaning chain conveyor 4 is a second conveying drive device 7. A permeable brick conveying trolley 8 is set on the right side. A polyurethane resin spraying gantry 9 and an ultraviolet emitter mounting gantry 11 are respectively set on the travel route of the permeable brick conveying trolley 8. A polyurethane resin spraying nozzle 10 is set on the polyurethane resin spraying gantry 9, and an ultraviolet emitter 12 is set on the ultraviolet emitter mounting gantry 11. A permeable brick conveying and drying chain conveyor 13 is set on the right side of the ultraviolet emitter mounting gantry 11. A palletizing platform mechanism 14 is set on the right side of the permeable brick conveying and drying chain conveyor 13. A permeable brick palletizing conveyor 15 is set below the palletizing platform mechanism 14. The various links of the present invention work together to continuously transfer production, realizing the full automation of the application of the imitation stone permeable brick cover.

[0031] When the concrete imitation stone permeable brick passes directly under the continuous laser generator 6, it is irradiated by the continuous laser emitted by the continuous laser generator 6. The continuous laser irradiation causes the solidified mortar attached to the surface of the imitation stone layer to pyrolyze and break down, so that the surface stone is completely exposed, thereby enhancing the imitation stone effect.

[0032] The focal point of the laser beam emitted by the continuous laser generator 6 is set in the solidified mortar spot on the surface of the concrete imitation stone permeable brick that passes directly below the continuous laser generator 6; or, the focal point of the laser beam emitted by the continuous laser generator 6 is set on the solidified mortar block in the permeable pores of the concrete imitation stone permeable brick that passes directly below the continuous laser generator 6. The imitation stone permeable brick can be controlled to pass through the laser scanning area multiple times to achieve better cleaning effect. The focal point of the laser beam can also be determined through repeated experiments, so that the solidified mortar layer on the surface and the solidified mortar in the permeable pores can be broken down at one time, thereby improving production efficiency.

[0033] A pulsed high-pressure impact air pump is installed on the laser emitter mounting gantry 5. The high-pressure impact airflow emitted by the pulsed high-pressure impact air pump has an angle of 60 degrees with the surface of the imitation stone permeable brick. The intermittent pulsed high-pressure airflow is more conducive to the peeling of the cracked solidified mortar from the imitation stone layer.

[0034] The second conveying drive device 7 controls the permeable brick conveying trolley 8 to move from left to right through the polyurethane resin spraying gantry 9. At the same time, the polyurethane spraying equipment sprays weather-resistant polyurethane through the polyurethane resin spray nozzle 10 onto the surface of the stone-like permeable brick, thereby achieving an adhesion coating on the surface of the stone-like permeable brick. This step is the specific operation step of coating the cleaned stone-like surface. Through this step, a weather-resistant resin coating layer with permeable pores can be constructed on the stone-like surface of the permeable brick.

[0035] The polyurethane spraying equipment is a polyurethane spraying equipment that can input two-component materials. The two-component polyurethane spraying equipment is equipped with polyether polyol at a temperature of 60℃-70℃ and aliphatic polyisocyanate at a temperature of 60℃-70℃. The viscosity of the polyether polyol is 3500 mPa·s. The polyether polyol and aliphatic polyisocyanate are mixed in a 1:1 weight ratio in the polyurethane resin spray nozzle 10 and then sprayed. Polyether polyol is a resin that can solidify quickly. Heating it and mixing it with the high-temperature diluent aliphatic polyisocyanate makes it easier to spray and solidify rapidly on the permeable brick imitation stone surface at room temperature, thereby constructing a porous cover mesh.

[0036] The spray pressure after mixing polyether polyol and aliphatic polyisocyanate is 25 MPa; the time it takes for the polyether polyol and aliphatic polyisocyanate to leave the polyurethane resin spray nozzle 10 and reach the top surface of the permeable brick is 0.8-1.5 seconds; the weight of the weather-resistant polyurethane resin mixture uniformly sprayed on the surface of each square meter of stone-like permeable brick is 80-110 grams. This spray amount and the conveying speed of the stone-like permeable brick together ensure the construction of the cover pores.

[0037] When the covered stone-like permeable bricks are conveyed to the bottom of the stacking platform mechanism 14, the weather-resistant polyurethane resin of the cover is already dry; the conveying time of the stone-like permeable bricks on the permeable brick conveying and drying chain conveyor 13 is about 15-20 seconds.

[0038] An automated coating method for semi-dry permeable concrete bricks made using a stone-like process includes a first chain conveyor 1, a destacking platform mechanism 2, a first conveying drive device 3, a permeable brick laser cleaning chain conveyor line 4, a laser emitter mounting gantry 5, a continuous laser generator 6, a second conveying drive device 7, a permeable brick conveying trolley 8, a polyurethane resin spraying gantry 9, a polyurethane resin spraying nozzle 10, an ultraviolet emitter mounting gantry 11, an ultraviolet emitter 12, a permeable brick conveying and drying chain conveyor 13, a stacking platform mechanism 14, and a permeable brick stacking post-conveying conveyor 15. These units are combined to form a complete coating production line; specifically, it includes the following steps:

[0039] The first step is to place the concrete imitation stone permeable bricks, which are made by the semi-dry non-fired pressing process, on the first chain conveyor 1 in a whole stack; then, they are conveyed to the destacking platform mechanism 2 to be destacking. After destacking, the imitation stone permeable bricks are placed with the imitation stone surface facing up, and are conveyed by the first conveying drive device 3 and laid flat on the permeable brick laser cleaning chain conveyor line 4.

[0040] The second step involves laying the permeable stone bricks, with the surface facing upwards, on the laser cleaning chain conveyor line 4. As the permeable stone bricks pass through the gantry frame 5 installed by the laser emitter, the continuous laser emitted by the continuous laser generator 6 scans and irradiates the surface of the permeable stone bricks. Furthermore, the focal point of the laser beam emitted by the continuous laser generator 6 is set on the solidified mortar in the permeable pores of the concrete permeable stone brick surface that passes directly below the continuous laser generator 6.

[0041] The third step is to install a pulsed high-pressure impact air pump on the laser generator mounting gantry 3. After the laser scanning of the imitation stone permeable brick is completed, it is cleaned by high-pressure impact airflow. The angle between the high-pressure impact airflow emitted by the pulsed high-pressure impact air pump and the surface of the imitation stone permeable brick is 60 degrees.

[0042] Step 4: The cleaned stone-like permeable bricks are conveyed to the permeable brick conveying trolley 8 by the second conveying drive device 7. The permeable brick conveying trolley 8 is started and moves from left to right.

[0043] Step 5: When the permeable brick conveyor trolley 8 travels directly under the polyurethane resin spraying gantry 9, the polyurethane resin spray nozzle 10, under the control of the polyurethane resin spraying device, sprays weather-resistant polyurethane resin onto the surface of the stone-like permeable brick. The weight of the weather-resistant polyurethane resin evenly sprayed on the surface of each square meter of stone-like permeable brick is 80-110 grams, thus completing the surface coating of the permeable brick.

[0044] Step 6: After the stone-like permeable bricks are covered, they are conveyed to the permeable brick conveying and drying chain conveyor 13 and dried while being conveyed. When the stone-like permeable bricks are conveyed to the stacking platform mechanism 14, the weather-resistant polyurethane resin cover is completely dry.

[0045] Step 7: The palletizing platform mechanism 14 stacks the dried permeable stone bricks into a pile and conveys them to the permeable brick stacking conveyor 15. Finally, the bricks are packaged and shipped.

[0046] The polyurethane spraying equipment is a polyurethane spraying equipment that can input two-component materials. The two-component polyurethane spraying equipment contains polyether polyol at a temperature of 60℃-70℃ and aliphatic polyisocyanate at a temperature of 60℃-70℃. The viscosity of the polyether polyol is 3500 mPa·s. Furthermore, the polyether polyol and aliphatic polyisocyanate are mixed in a 1:1 weight ratio in the polyurethane resin spray nozzle 10 and then sprayed out. The spraying pressure of the polyurethane spraying equipment nozzle is 25 MPa.

[0047] The polyurethane spraying equipment is a polyurethane spraying equipment that can input single-component materials. UV polyurethane resin with a viscosity of 300-500 mPa.s is selected as the adhesion material on the surface of the permeable brick 4. When the sprayed stone-like permeable brick is conveyed to the gantry frame 11 under the ultraviolet emitter, the ultraviolet rays emitted by the ultraviolet emitter 12 irradiate the surface of the stone-like permeable brick on the permeable brick conveying trolley 8, causing the UV polyurethane resin on the surface of the stone-like permeable brick to solidify.

[0048] The time for the weather-resistant polyurethane resin to leave the nozzle and reach the surface of the permeable brick is 0.8 seconds; the overall concept of the present invention when completing the cover is either to construct a porous mesh cover on the top surface of the permeable brick, or to form a mesh organic resin cover layer that retains the entrance to the existing pores on the top surface of the permeable brick.

Claims

1. An automated production line for attaching semi-dry permeable concrete bricks to a surface, comprising a first chain conveyor (1) on which stacks of raw permeable bricks are conveyed, characterized in that, A destacking platform mechanism (2) is provided on the right side of the first chain conveyor (1). A first conveying drive device (3) for the destacking permeable bricks is provided below the destacking platform mechanism (2). A permeable brick laser cleaning chain conveyor line (4) is provided on the right side of the first conveying drive device (3). A laser emitter mounting gantry (5) is provided on the permeable brick laser cleaning chain conveyor line (4). A continuous laser generator (6) is provided on the laser emitter mounting gantry (5). A second conveying drive device (7) is provided on the right side of the permeable brick laser cleaning chain conveyor line (4). A permeable brick conveying trolley is provided on the right side of the second conveying drive device (7). 8) A polyurethane resin spraying gantry (9) and an ultraviolet emitter mounting gantry (11) are respectively set on the travel route of the permeable brick conveying trolley (8). A polyurethane resin spraying nozzle (10) is set on the polyurethane resin spraying gantry (9). An ultraviolet emitter (12) is set on the ultraviolet emitter mounting gantry (11). A permeable brick conveying and drying chain conveyor (13) is set on the right side of the ultraviolet emitter mounting gantry (11). A palletizing platform mechanism (14) is set on the right side of the permeable brick conveying and drying chain conveyor (13). A permeable brick palletizing conveyor (15) is set below the palletizing platform mechanism (14).

2. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 1, characterized in that, When the concrete imitation stone permeable brick passes directly under the continuous laser generator (6), it is irradiated by the continuous laser emitted by the continuous laser generator (6).

3. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 2, characterized in that, The focal point of the laser beam emitted by the continuous laser generator (6) is set in the solidified mortar layer of the concrete imitation stone permeable brick surface that passes directly below the continuous laser generator (6); or, the focal point of the laser beam emitted by the continuous laser generator (6) is set on the solidified mortar in the permeable pores of the concrete imitation stone permeable brick surface that passes directly below the continuous laser generator (6).

4. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 3, characterized in that, A pulsed high-pressure impact air pump is installed on the laser emitter mounting gantry (5). The high-pressure impact airflow emitted by the pulsed high-pressure impact air pump has an angle of 60 degrees with the surface of the imitation stone permeable brick.

5. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 4, characterized in that, The second conveying drive device (7) controls the permeable brick conveying trolley (8) to move along the direction from left to right through the polyurethane resin spraying gantry (9). At the same time, the polyurethane spraying equipment sprays weather-resistant polyurethane through the polyurethane resin spray nozzle (10) onto the surface of the imitation stone permeable brick, thereby achieving an adhesion coating on the surface of the imitation stone permeable brick.

6. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 5, characterized in that, The polyurethane spraying equipment is a polyurethane spraying equipment that can input two-component materials. In the polyurethane spraying equipment containing two-component materials, polyether polyol with a temperature of 60℃-70℃ and aliphatic polyisocyanate with a temperature of 60℃-70℃ are respectively set. The viscosity of the polyether polyol is 3500mPa.s. Furthermore, the polyether polyol and aliphatic polyisocyanate are mixed in a weight ratio of 1:1 in the polyurethane resin spray nozzle (10) and then sprayed out.

7. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 6, characterized in that, The spray pressure after mixing polyether polyol and aliphatic polyisocyanate is 25 MPa; the time for polyether polyol and aliphatic polyisocyanate to leave the polyurethane resin spray nozzle (10) and reach the top surface of the permeable brick is 0.8-1.5 seconds; the weight of the weather-resistant polyurethane resin mixture uniformly sprayed on the surface of the stone-like permeable brick per square meter is 80-110 grams.

8. The automated coating production line for semi-dry concrete imitation stone permeable bricks according to claim 7, characterized in that, When the covered stone permeable bricks are conveyed to the bottom of the stacking platform mechanism (14), the weather-resistant polyurethane resin of the cover is already dry.

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