A pulp feeding device for a conveyor belt

Abstract

The present invention relates to the technical field of surface decoration of ceramic tiles, and discloses a slurry spreading device for a conveyor belt, comprising: a slurry conveyor belt; a slurry spreading system arranged above the slurry conveyor belt; a ceramic green body conveyor belt arranged below the slurry conveyor belt; a slurry spreading roller and a buffer slurry tank located below the discharging end of the slurry conveyor belt and above the ceramic green body conveyor belt; openings are provided above and below the buffer slurry tank, the upper opening faces the discharging end of the slurry conveyor belt, and the lower opening faces the top of the slurry spreading roller. The slurry spreading device of the present invention has flexible switch control, can timely stop the application of slurry on the surface of the ceramic green body, and moreover, the slurry layer formed on the surface of the ceramic green body is thicker and the thickness is more uniform, thus it can avoid the pattern texture being damaged during the polishing process and avoid unnatural concavities and convexities in the formed pattern texture.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic tile surface decoration, and particularly relates to a conveyor belt pulp spreading device. Background Art

[0002] By forming a decorative layer on the surface of a ceramic tile, its surface can have pattern textures, imitate natural stone textures, and improve the decoration of the ceramic tile. Currently, the main methods for forming a decorative layer on the surface of a ceramic tile are printing patterns (including inkjet printing, roller printing, screen printing, etc.) and applying fabrics (including dry fabric spreading and wet pulp spreading). Among them, wet pulp spreading is to apply ceramic slurry to the ceramic blank and use the ceramic slurry to form pattern textures. Compared with dry fabric spreading, it is easier to form natural and three-dimensional layered textures.

[0003] The traditional pulp spreading method is to spray through multiple pulp spreading pipes on the surface of the ceramic blank, which can only form linear flow patterns, and the blending and mixing degree between slurries with different compositions and / or colors is relatively low. The formed pattern textures have poor transitional properties, the layering effect is not obvious, and the decoration effect is not good.

[0004] Patent CN202111082069.X discloses a digital spray-pulping decorative ceramic tile, its production device, and production method. The production device uses a basic pulp application mechanism and a movable digital spray-pulping mechanism to respectively pour the basic pulp and decorative pulp onto the upper surface of a pouring bell. Then the slurry flows along the pouring bell and is poured onto the surface of the ceramic blank from the edge of the pouring bell. The movable digital spray-pulping mechanism can position and distribute the decorative pulp according to the signal input from the controller, so that the slurry layer formed on the pouring bell has the set pattern textures, thereby making the pattern textures formed on the surface of the ceramic blank more diverse. Moreover, during the flow of the slurry on the pouring bell, the blending and mixing occur at the interface of slurries with different compositions and / or colors, making the transition between different types or different color pattern textures more natural. Therefore, it can overcome the defects of the traditional pulp spreading method to a certain extent. However, this device has the following problems: when it is necessary to stop applying slurry to the surface of the ceramic blank, only by closing the basic pulp application mechanism and the movable digital spray-pulping mechanism, the slurry that has been sprayed onto the pouring bell cannot stop flowing, so it is impossible to stop applying slurry to the surface of the ceramic blank in a timely manner, and the control is not flexible; in addition, it is difficult to control the thickness of the slurry layer applied to the ceramic blank uniformly, which will affect the formed pattern textures; furthermore, there is also the problem that the slurry layer applied to the ceramic blank is too thin, and it is easily over-worn during subsequent polishing, resulting in the destruction of the pattern textures. Summary of the Invention

[0005] To solve the technical problems that the existing pulp distribution devices cannot stop applying pulp to the surface of the ceramic green body in a timely manner, and the thickness of the pulp layer formed on the surface of the ceramic green body is low and uneven, the present invention provides a conveyor belt pulp distribution device. The on-off control of this pulp distribution device is relatively flexible, which can stop applying pulp to the surface of the ceramic green body in a timely manner. Moreover, the pulp layer formed on the surface of the ceramic green body is thicker and more uniform in thickness, so that the pattern texture can be prevented from being damaged during the polishing process, and the formed pattern texture can be prevented from having unnatural concavities and convexities.

[0006] The specific technical solution of the present invention is as follows:

[0007] A conveyor belt pulp distribution device, comprising:

[0008] A pulp conveyor belt;

[0009] A pulp distribution system provided above the pulp conveyor belt;

[0010] A ceramic green body conveyor belt provided below the pulp conveyor belt;

[0011] A pulp distribution roller and a buffer pulp tank located below the discharge end of the pulp conveyor belt and above the ceramic green body conveyor belt; openings are provided above and below the buffer pulp tank, the upper opening faces the discharge end of the pulp conveyor belt, and the lower opening faces the top of the pulp distribution roller.

[0012] The working process of the conveyor belt pulp distribution device of the present invention is as follows: the pulp distribution system applies pulp to the pulp conveyor belt to form a pulp layer with a required pattern on the surface of the pulp conveyor belt; after the pulp is conveyed to the discharge end of the pulp conveyor belt, it flows into the buffer pulp tank and then flows onto the pulp distribution roller, and is then led out to the ceramic green body by the pulp distribution roller; the ceramic green body moves under the action of the ceramic green body conveyor belt, so that pulp is applied to different positions on the surface of the ceramic green body and the required pattern is formed.

[0013] Compared with the prior art method of using a slope structure (such as a pouring bell) to make the pulp flow naturally onto the ceramic green body, the present invention uses a pulp conveyor belt to convey the pulp. When it is not necessary to apply pulp to the surface of the ceramic green body, the application of pulp to the surface of the ceramic green body can be stopped in a timely manner by turning off the pulp conveyor belt, and the control is more flexible.

[0014] The present invention provides a pulp distribution roller and a buffer pulp tank between the discharge end of the pulp conveyor belt and the ceramic green body conveyor belt, which have the following functions:

[0015] (1) When using the pulp distribution system to apply pulp to the surface of the conveyor belt, it is difficult to control the thickness of the pulp layer to be uniform. By using the buffer pulp tank to buffer the pulp and then conveying it to the ceramic green body through the pulp distribution roller, the thickness of the pulp layer can be made more uniform, thus preventing the formed pattern texture from having unnatural concavities and convexities;

[0016] (2)During the process of being conveyed on the slurry conveyor belt, the slurry will undergo a certain degree of blending and mixing. However, compared with the natural flow on the pouring bell, the degree of blending and mixing of the slurry on the conveyor belt is relatively low. By setting up the pulp distributing roller and the buffer slurry tank, this defect can be overcome - when the slurry is cached in the buffer slurry tank, further blending and mixing will occur, causing the pattern of the slurry to change, making the transition between different types or colors of pattern textures more natural, and making the pattern textures formed on the ceramic blank more rich and diverse;

[0017] (3)The slurry can be accumulated in the buffer slurry tank, increasing the thickness of the slurry reaching the pulp distributing roller, and then forming a thicker slurry layer on the surface of the ceramic blank, which can prevent the slurry layer from being excessively worn and damaging the pattern textures during the subsequent polishing process;

[0018] (4)In cooperation with the slurry conveyor belt, by controlling the running speeds of the slurry conveyor belt and the pulp distributing roller, the speed at which the slurry is applied to the ceramic blank and the thickness of the slurry accumulated in the buffer slurry tank can be flexibly controlled, thereby controlling the mixing degree of the slurry in the buffer slurry tank, which helps to achieve more rich and diverse pattern textures.

[0019] Preferably, the buffer slurry tank is surrounded by a front baffle near the discharging end of the pulp distributing roller, a rear baffle far from the discharging end of the pulp distributing roller, and two side baffles located between the front baffle and the rear baffle; the lower ends of the rear baffle and the side baffles are in contact with the surface of the pulp distributing roller; there is a slurry discharging gap between the lower end of the front baffle and the pulp distributing roller.

[0020] When the above-mentioned buffer slurry tank structure design is adopted, after the slurry enters the buffer slurry tank, it can accumulate a certain thickness under the blockage of the surrounding baffles (front baffle, rear baffle, and side baffles), so that the thickness of the slurry layer formed on the ceramic blank is more uniform, and the slurry undergoes a certain degree of mixing; the slurry accumulated in the buffer slurry tank flows out through the slurry discharging gap and is then conveyed to the ceramic blank by the pulp distributing roller. By controlling the width of the slurry discharging gap, the thickness of the slurry layer formed on the ceramic blank can be controlled, so as to adapt to different degrees of subsequent polishing and avoid damage to the pattern textures during the polishing process.

[0021] Preferably, the front baffle is a liftable baffle.

[0022] The front baffle adopts a liftable design, which can make the width of the slurry discharging gap adjustable, and then control the thickness of the slurry layer formed on the ceramic blank to meet the needs of different degrees of polishing.

[0023] Preferably, the width of the slurry discharging gap (i.e., the vertical distance between the lower end of the front baffle and the surface of the pulp distributing roller) is 2 - 20 mm.

[0024] Preferably, the distance between the two side baffles is adjustable.

[0025] By adjusting the distance between the two side baffles, the width of the slurry layer applied to the surface of the ceramic green body can be changed, so that patterns and textures with different widths can be formed on the ceramic green body.

[0026] Preferably, a conveyor belt scraper is provided at the discharging end of the slurry conveyor belt; the upper end of the conveyor belt scraper is in contact with the surface of the slurry conveyor belt, and the lower end faces the buffer slurry tank.

[0027] Preferably, a sizing roll scraper is provided at the discharging end of the sizing roll; the upper end of the sizing roll scraper is in contact with the surface of the sizing roll, and the lower end faces the ceramic green body conveyor belt.

[0028] The conveyor belt scraper and the sizing roll scraper can play a role in guiding the flow of the slurry. The slurry flows from the slurry conveyor belt into the buffer slurry tank via the slurry conveyor belt, and flows from the sizing roll onto the ceramic green body via the sizing roll scraper, which can reduce uncontrollable changes in the pattern and thickness of the slurry during movement, so as to better control the pattern and texture formed on the surface of the ceramic green body, and make the slurry layer formed on the surface of the ceramic green body have a large and uniform thickness.

[0029] Preferably, the sizing system includes at least one movable digital sizing mechanism, at least one movable digital paintbrush and at least one fixed digital sizing mechanism.

[0030] The present invention uses a fixed digital sizing mechanism for printing, combines the engraving of a movable digital paintbrush and the spraying of a movable digital sizing mechanism, can achieve an organic combination of points, lines and surfaces, make the pattern and texture formed by sizing more rich and diverse, clear and vivid, three-dimensional and delicate, and have a good gradual transition effect.

[0031] Preferably, the structure of the movable digital sizing mechanism and / or the fixed digital sizing mechanism is as follows: it includes a housing; a slurry inlet and a spray hole are provided on the housing; a plug adapted to the spray hole and an extrusion mechanism for controlling the up and down movement of the plug are provided in the housing; the plug is located above the spray hole.

[0032] After the slurry enters the sizing mechanism from the slurry inlet, it flows out through the gap between the plug and the spray hole. By moving the plug up and down to adjust the size of the gap between the plug and the spray hole, the flow rate of the slurry can be controlled, and thus the pattern formed on the surface of the slurry conveyor belt can be changed.

[0033] Preferably, the lower surface of the plug is an inwardly concave structure.

[0034] Adopting the above-mentioned inwardly concave design is beneficial to improving the slurry discharging stability of the nozzle and preventing the slurry droplets from deflecting and tearing.

[0035] Preferably, a filtering mechanism is provided at the slurry inlet.

[0036] The slurry is filtered by a filtering mechanism to remove granular aggregates therein, which can avoid clogging the spray holes.

[0037] Preferably, the filtering mechanism is at least one layer of sieve mesh.

[0038] Preferably, the mesh number of the sieve mesh is 50 - 600 meshes.

[0039] Preferably, a slurry distribution signal input end is provided on the housing; the slurry distribution signal input end is connected to a controller.

[0040] Preferably, a hydrophobic film is provided on the inner surface of the buffer slurry tank.

[0041] Preferably, hard particles are discretely distributed in the hydrophobic film.

[0042] By adding hard particles to the water - repellent film, the wear resistance of the film can be enhanced.

[0043] Preferably, the hard particles are emery.

[0044] Preferably, the transmission direction of the slurry on the slurry conveyor belt is the same as the transmission direction of the ceramic green body on the ceramic green body conveyor belt.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] (1) The present invention uses a cooperative structure of a slurry conveyor belt, a buffer slurry tank and a slurry distribution roller to convey the slurry, which can timely stop the application of the slurry on the surface of the ceramic green body; at the same time, it can also make a better blend and mixing occur at the interface of different slurries, making the transition in the formed pattern texture more natural; in addition, it can also make the thickness of the slurry layer applied to the ceramic green body larger and uniform, so as to avoid the damage of the pattern texture during the polishing process and avoid unnatural unevenness in the formed pattern texture.

[0047] (2) By setting a scraper at the discharging section of the slurry conveyor belt and the slurry distribution roller, and using its drainage function, the present invention can reduce the uncontrollable changes in the pattern and thickness of the slurry layer during its movement, thereby better controlling the pattern texture formed on the surface of the ceramic green body, making it natural and vivid, with good layering and transition effects.

[0048] (3) The present invention uses a combination of a mobile digital slurry distribution mechanism, a mobile digital paintbrush and a fixed digital slurry distribution mechanism as the slurry distribution system, which can realize various ways of printing, engraving and spraying, achieve an organic combination of points, lines and surfaces, make the pattern texture formed by slurry distribution more rich and diverse, clear and vivid, three - dimensional and delicate, and have a good progressive transition effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1It is a schematic structural diagram of a pulp spreading device for a transmission belt of the present invention;

[0050] Figure 2 It is a schematic structural diagram of a mobile digital pulp spreading mechanism and a fixed digital pulp spreading mechanism in the present invention.

[0051] The reference numerals are: ceramic blank 1, pulp spreading roller scraper 2, pulp spreading roller 3, buffer pulp tank 4, front baffle 4-1, rear baffle 4-2, transmission belt scraper 5, mobile digital pulp spreading mechanism 6, housing 6-1, pulp inlet 6-2, spray hole 6-3, plug 6-4, extrusion mechanism 6-5, filtering mechanism 6-6, pulp spreading signal input end 6-7, mobile digital paintbrush 7, pulp transmission belt 8, fixed digital pulp spreading mechanism 9, ceramic blank conveyor belt 10, pulp outlet gap 11. Specific embodiments

[0052] The present invention will be further described below in conjunction with embodiments.

[0053] General embodiment

[0054] A transmission belt pulp spreading device includes:

[0055] Pulp transmission belt 8;

[0056] A pulp spreading system arranged above the pulp transmission belt 8;

[0057] A ceramic blank conveyor belt 10 arranged below the pulp transmission belt 8;

[0058] A pulp spreading roller 3 and a buffer pulp tank 4 located below the discharging end of the pulp transmission belt 8 and above the ceramic blank conveyor belt 10; both the upper and lower parts of the buffer pulp tank 4 are provided with openings, the upper opening faces the discharging end of the pulp transmission belt 8, and the lower opening faces the top of the pulp spreading roller 3.

[0059] As a specific embodiment, the buffer pulp tank 4 is surrounded by a front baffle 4-1 close to the discharging end of the pulp spreading roller 3, a rear baffle 4-2 far from the discharging end of the pulp spreading roller 3, and two side baffles located between the front baffle 4-1 and the rear baffle 4-2; the lower end of the rear baffle 4-2 is attached to the surface of the pulp spreading roller 3; a pulp outlet gap 11 with a width of 2-20 mm is provided between the lower ends of the front baffle 4-1 and the side baffles and the pulp spreading roller 3; the front baffle 4-1 is a lifting baffle; the distance between the two side baffles is adjustable.

[0060] As a specific embodiment, a transmission belt scraper 5 is provided at the discharging end of the pulp transmission belt 8; the upper end of the transmission belt scraper 5 is attached to the surface of the pulp transmission belt 8, and the lower end faces the inside of the buffer pulp tank 4.

[0061] As a specific embodiment, a sizing roll blade 2 is provided at the discharging end of the sizing roll 3; the upper end of the sizing roll blade 2 is in contact with the surface of the sizing roll 3, and the lower end faces the ceramic green conveyor belt 10.

[0062] As a specific embodiment, the sizing system includes at least one movable digital sizing mechanism 6, at least one movable digital painting brush 7, and at least one fixed digital sizing mechanism 9.

[0063] As a specific embodiment, the structure of the movable digital sizing mechanism 6 and / or the fixed digital sizing mechanism 9 is as follows: it includes a housing 6-1; a slurry inlet 6-2, a spray hole 6-3, and a sizing signal input terminal 6-7 are provided on the housing 6-1; a plug 6-4 adapted to the spray hole 6-3 and an extrusion mechanism 6-5 for controlling the up and down movement of the plug 6-4 are provided inside the housing 6-1; the plug 6-4 is located above the spray hole 6-3; the lower surface of the plug 6-4 is a concave structure; a filtering mechanism 6-6 is provided at the slurry inlet 6-2, and the filtering mechanism 6-6 can adopt at least one layer of sieve mesh with a mesh number of 50 to 600; the sizing signal input terminal 6-7 is connected to the controller.

[0064] As a specific embodiment, a hydrophobic film is provided on the inner surface of the buffer slurry tank 4; hard particles are discretely distributed in the hydrophobic film, and the hard particles can adopt emery.

[0065] As a specific embodiment, the transmission direction of the slurry on the slurry conveyor belt 8 is the same as the transmission direction of the ceramic green on the ceramic green conveyor belt 10.

[0066] Embodiment 1

[0067] A conveyor belt sizing device has a structure as Figure 1 shown, and is composed of a sizing system, a slurry conveyor belt 8, a buffer slurry tank 4, a sizing roll 3, and a ceramic green conveyor belt 10. The specific structure is as follows:

[0068] The slurry conveyor belt 8 is located above the ceramic green conveyor belt 10, and the two are arranged in parallel. The transmission direction of the slurry on the slurry conveyor belt 8 is the same as the transmission direction of the ceramic green on the ceramic green conveyor belt 10 (both are transmitted from right to left in Figure 1 this case). The surface of the slurry conveyor belt 8 is made of silicone rubber.

[0069] The sizing system is located above the slurry conveyor belt 8, and is composed of four fixed digital sizing mechanisms 9, one movable digital painting brush 7, and one movable digital sizing mechanism 6. The four fixed digital sizing mechanisms 9, one movable digital painting brush 7, and one movable digital sizing mechanism 6 are arranged side by side in sequence along the transmission direction of the slurry conveyor belt 8. The structure of the movable digital sizing mechanism 6 is as Figure 2As shown in the figure, it is composed of a housing 6-1, a slurry inlet 6-2, a spray hole 6-3, a plug 6-4, an extrusion mechanism 6-5, a filtering mechanism 6-6, and a pulp distribution signal input terminal 6-7. The slurry inlet 6-2 is provided on the side of the housing 6-1, and a filtering mechanism 6-6 composed of a 5-layer stainless steel screen with a mesh number of 300 is provided at the slurry inlet 6-2. The spray hole 6-3 is provided on the lower surface of the housing 6-1. The plug 6-4 is adapted to the spray hole 6-3 and is located directly above the spray hole 6-3. The plug 6-4 is made of rubber, and the lower surface is a concave structure. The extrusion mechanism 6-5 and the plug 6-4 are provided inside the housing 6-1, and the plug 6-4 is connected to the lower end of the extrusion mechanism 6-5. The extrusion mechanism 6-5 drives the plug 6-4 to move up and down. When the plug 6-4 moves to the lowest position, it can block the spray hole 6-3. When the plug 6-4 moves upward, an opening and closing gap is formed between the plug 6-4 and the spray hole 6-3, and the slurry can flow out from the opening and closing gap and the spray hole 6-3. The opening and closing gap adopts a 0~100% continuous control. The pulp distribution signal input terminal 6-7 is provided on the top of the housing 6-1 and is connected to the controller. The structure of the fixed digital pulp distribution mechanism 9 is the same as that of the mobile digital pulp distribution mechanism 6. The mobile digital painting brush 7 is a cylindrical structure, and the surface layer is made of silicone rubber, and is also connected to the controller. The controller can control the fixed digital pulp distribution mechanism 9, the mobile digital painting brush 7, and the mobile digital pulp distribution mechanism 6 to distribute pulp on the pulp conveyor belt 8 according to the set pulp distribution pattern, so that the pulp layer formed on the pulp conveyor belt 8 has the set pattern.

[0070] The buffer slurry tank 4 is made of stainless steel, located below the discharging end of the pulp conveyor belt 8, and above the ceramic green body conveyor belt 10. The pulp distribution roller 3 is a cylindrical silicone rubber roller, the surface layer is made of silicone rubber, and the Shore hardness is 46. It is located below the buffer slurry tank 4 and above the ceramic green body conveyor belt 10. Both the top and bottom of the buffer slurry tank 4 are provided with openings. The top opening faces the discharging end of the pulp conveyor belt 8, and the bottom opening faces the top of the pulp distribution roller 3. The buffer slurry tank 4 is surrounded by a front baffle 4-1, a rear baffle 4-2, and two side baffles. Among them: the front baffle 4-1 is located near the discharging end of the pulp distribution roller 3 and adopts a fixed design. A pulp discharging gap 11 with a width of 2 mm is formed between the lower end of the front baffle 4-1 and the surface of the pulp distribution roller 3, which can allow the slurry in the buffer slurry tank 4 to flow out; the rear baffle 4-2 is located far from the discharging end of the pulp distribution roller 3 and adopts a fixed design, and its lower end fits with the surface of the pulp distribution roller 3 to prevent the slurry from flowing out from here; the two side baffles are located between the front baffle 4-1 and the rear baffle 4-2 and adopt a fixed design, and their lower ends fit with the surface of the pulp distribution roller 3. A hydrophobic film is provided on the inner surface of the slurry storage tank 4, and discrete diamond abrasives are provided in the hydrophobic film.

[0071] At the discharging end of the slurry conveyor belt 8, there is a triangular conveyor belt scraper 5 made of rigid plastic. The upper end of the conveyor belt scraper 5 (i.e., the base of the triangle) is in contact with the surface of the slurry conveyor belt 8, and the lower end (i.e., the tip of the triangle) faces the top opening of the buffer slurry tank 4, so that the slurry flowing out from the discharging end of the slurry conveyor belt 8 can flow into the buffer slurry tank 4 via the conveyor belt scraper 5. At the discharging end of the slurry distributing roller 3, there is a rectangular slurry distributing roller scraper 2 made of stainless steel. The upper end of the slurry distributing roller scraper 2 is in contact with the surface of the slurry distributing roller 3, and the lower end faces the ceramic green body conveyor belt 10, so that the slurry flowing out from the discharging end of the slurry distributing roller 3 can be dripped onto the ceramic green body 1 via the slurry distributing roller scraper 2.

[0072] The working process of the conveyor belt slurry distributing device in this embodiment is as follows:

[0073] (1) According to the set slurry distribution drawing, the controller drives the fixed digital slurry distribution mechanism 9, the moving digital paintbrush 7, and the moving digital slurry distribution mechanism 6 to perform slurry distribution and engraving on the slurry conveyor belt 8 to form a slurry layer. Among them, in the fixed digital slurry distribution mechanism 9 and the moving digital slurry distribution mechanism 6, the slurry is filtered by the filtering mechanism 6-6 at the slurry inlet 6-2 to remove the granular aggregates therein to prevent clogging of the spray holes 6-3, and then enters the interior of the housing 6-1, and then flows out from the opening and closing gap between the plug 6-4 and the spray hole 6-3 and the spray hole 6-3. By driving the plug 6-4 to move up and down through the extrusion mechanism 6-5, the size of the opening and closing gap can be controlled, thereby changing the texture shape formed by the slurry on the conveyor belt.

[0074] (2) During the process of the slurry layer being conveyed on the slurry conveyor belt 8, a certain degree of blending and mixing will occur at the interfaces of different slurries. After the slurry layer is conveyed to the discharging end of the slurry conveyor belt 8, it is collected and diverted by the conveyor belt scraper 5 and flows into the buffer slurry tank 4, where it accumulates. This process can make the thickness of the slurry layer more uniform to avoid unnatural concavities and convexities in the finally formed pattern texture, and can further promote the blending and mixing at the interfaces of different slurries. This blending and mixing can cause changes in the slurry pattern, making the transition between different types or different color pattern textures more natural and making the pattern texture formed on the ceramic green body more rich and diverse.

[0075] (3) The slurry in the buffer slurry tank 4 is led out through the slurry outlet gap 11 between the lower end of the front baffle 4-1 of the buffer slurry tank 4 and the surface of the slurry distributing roller 3 via the slurry distributing roller 3, and then is conveyed to the discharging end of the slurry distributing roller 3 on the surface of the slurry distributing roller 3. Through the above-mentioned links of the buffer slurry tank 4 and the slurry distributing roller 3, the thickness of the slurry layer formed on the surface of the ceramic green body 1 can be increased, which helps to avoid damage to the pattern texture due to excessive wear of the slurry layer during the subsequent polishing process.

[0076] (4) The ceramic blank conveyor belt 10 conveys the ceramic blank 1 to the lower part of the discharging end of the pulp spreading roller 3. At this time, the pulp layer conveyed to the discharging end of the pulp spreading roller 3 is collected and diverted by the pulp spreading roller scraper 2, and then dripped onto the surface of the ceramic blank 1 to form a pulp layer with certain pattern textures, thus completing the pulp spreading on the surface of the ceramic blank 1. After subsequent drying, firing, and polishing, a decorative layer can be formed on the surface of the ceramic blank 1.

[0077] Example 2

[0078] A conveyor belt pulp spreading device has a structure as Figure 1 shown, and is composed of a pulp spreading system, a pulp conveyor belt 8, a buffer pulp tank 4, a pulp spreading roller 3, and a ceramic blank conveyor belt 10. The specific structure is as follows:

[0079] The pulp conveyor belt 8 is located above the ceramic blank conveyor belt 10, and the two are arranged in parallel. The conveying direction of the pulp on the pulp conveyor belt 8 is the same as the conveying direction of the ceramic blank on the ceramic blank conveyor belt 10 (both are conveyed from right to left in Figure 1 ). The surface of the pulp conveyor belt 8 is made of silicone rubber.

[0080] The pulp spreading system is located above the pulp conveyor belt 8 and is composed of four fixed digital pulp spreading mechanisms 9, a mobile digital paintbrush 7, and a mobile digital pulp spreading mechanism 6. The four fixed digital pulp spreading mechanisms 9, a mobile digital paintbrush 7, and a mobile digital pulp spreading mechanism 6 are arranged side by side in sequence along the conveying direction of the pulp conveyor belt 8. The structure of the mobile digital pulp spreading mechanism 6 is as Figure 2As shown in the figure, it is composed of a housing 6-1, a slurry inlet 6-2, a spray hole 6-3, a plug 6-4, an extrusion mechanism 6-5, a filtering mechanism 6-6, and a pulp distribution signal input terminal 6-7; the slurry inlet 6-2 is arranged on the side of the housing 6-1, and a filtering mechanism 6-6 composed of a 5-layer stainless steel screen with a mesh number of 300 is provided at the slurry inlet 6-2; the spray hole 6-3 is arranged on the lower surface of the housing 6-1; the plug 6-4 is adapted to the spray hole 6-3 and is located directly above the spray hole 6-3. The plug 6-4 is made of rubber, and its lower surface is an inwardly concave structure; the extrusion mechanism 6-5 and the plug 6-4 are arranged inside the housing 6-1, and the plug 6-4 is connected to the lower end of the extrusion mechanism 6-5. The extrusion mechanism 6-5 drives the plug 6-4 to move up and down. When the plug 6-4 moves to the lowest position, it can block the spray hole 6-3. When the plug 6-4 moves upward, an opening and closing gap is formed between the plug 6-4 and the spray hole 6-3, and the slurry can flow out from the opening and closing gap and the spray hole 6-3. The opening and closing gap adopts a 0-100% continuous control; the pulp distribution signal input terminal 6-7 is arranged on the top of the housing 6-1 and is connected to the controller. The structure of the fixed digital pulp distribution mechanism 9 is the same as that of the mobile digital pulp distribution mechanism 6. The mobile digital painting brush 7 is a cylindrical structure, and the surface layer is made of silicone rubber, and it is also connected to the controller. The controller can control the fixed digital pulp distribution mechanism 9, the mobile digital painting brush 7, and the mobile digital pulp distribution mechanism 6 to distribute pulp on the pulp conveyor belt 8 according to the set pulp distribution pattern, so that the pulp layer formed on the pulp conveyor belt 8 has the set pattern.

[0081] The buffer pulp tank 4 is made of stainless steel, located below the discharging end of the pulp conveyor belt 8, and above the ceramic green body conveyor belt 10. The pulp distribution roller 3 is a cylindrical silicone rubber roller, the surface layer is made of silicone rubber, and the Shore hardness is 46. It is located below the buffer pulp tank 4 and above the ceramic green body conveyor belt 10. Both the top and bottom of the buffer pulp tank 4 are provided with openings. The top opening faces the discharging end of the pulp conveyor belt 8, and the bottom opening faces the top of the pulp distribution roller 3. The buffer pulp tank 4 is surrounded by a front baffle 4-1, a rear baffle 4-2, and two side baffles. Among them: the front baffle 4-1 is located near the discharging end of the pulp distribution roller 3 and adopts a liftable design. By lifting the front baffle 4-1, the vertical distance between its lower end and the surface of the pulp distribution roller 3 can be changed within the range of 0-20 mm. And when the front baffle 4-1 rises, a pulp discharging gap 11 is formed between its lower end and the surface of the pulp distribution roller 3, which can supply the pulp in the buffer pulp tank 4 to flow out; the rear baffle 4-2 is located far from the discharging end of the pulp distribution roller 3 and adopts a fixed design, and its lower end fits with the surface of the pulp distribution roller 3 to prevent the pulp from flowing out from here; the two side baffles are located between the front baffle 4-1 and the rear baffle 4-2, and their lower ends fit with the surface of the pulp distribution roller 3, and the two side baffles adopt a movable design, so that the distance between them is adjustable. A water-repellent film is provided on the inner surface of the pulp storage tank 4, and discrete diamond abrasives are provided in the water-repellent film.

[0082] The discharging end of the slurry conveyor belt 8 is provided with a triangular conveyor belt scraper 5 made of hard plastic. The upper end of the conveyor belt scraper 5 (i.e., the bottom side of the triangle) is attached to the surface of the slurry conveyor belt 8, and the lower end (i.e., the tip of the triangle) faces the top opening of the buffer slurry tank 4, so that the slurry flowing out from the discharging end of the slurry conveyor belt 8 can flow into the buffer slurry tank 4 via the conveyor belt scraper 5. The discharging end of the slurry distributing roller 3 is provided with a rectangular slurry distributing roller scraper 2 made of stainless steel. The upper end of the slurry distributing roller scraper 2 is attached to the surface of the slurry distributing roller 3, and the lower end faces the ceramic green body conveyor belt 10, so that the slurry flowing out from the discharging end of the slurry distributing roller 3 can be dripped onto the ceramic green body 1 via the slurry distributing roller scraper 2.

[0083] The working process of the conveyor belt slurry distributing device in this embodiment is as follows:

[0084] (1) The controller drives the fixed digital slurry distributing mechanism 9, the moving digital paintbrush 7 and the moving digital slurry distributing mechanism 6 to perform slurry distribution and engraving on the slurry conveyor belt 8 according to the set slurry distribution drawing, forming a slurry layer.

[0085] (2) During the process of the slurry layer being conveyed on the slurry conveyor belt 8, a certain degree of blending and mixing occurs at the interfaces of different slurries. After the slurry layer is conveyed to the discharging end of the slurry conveyor belt 8, it is collected and diverted by the conveyor belt scraper 5 and flows into the buffer slurry tank 4, where it accumulates.

[0086] (3) The slurry in the buffer slurry tank 4 is discharged through the slurry distributing roller 3 from the slurry discharging gap 11 between the lower end of the front baffle 4-1 of the buffer slurry tank 4 and the surface of the slurry distributing roller 3, and then is conveyed to the discharging end of the slurry distributing roller 3 on the surface of the slurry distributing roller 3. During this process, by raising and lowering the front baffle 4-1 in the buffer slurry tank 4, the width of the slurry discharging gap 11 can be changed, thereby controlling the thickness of the slurry layer formed on the ceramic green body 1 to meet different polishing requirements; by adjusting the distance between the two side baffles in the buffer slurry tank 4, the width of the slurry layer applied to the surface of the ceramic green body can be changed, so that different-width pattern textures can be formed on the ceramic green body.

[0087] (4) The ceramic green body conveyor belt 10 conveys the ceramic green body 1 to the lower part of the discharging end of the slurry distributing roller 3. At this time, the slurry layer conveyed to the discharging end of the slurry distributing roller 3 is collected and diverted by the slurry distributing roller scraper 2 and dripped onto the surface of the ceramic green body 1, forming a slurry layer with a certain pattern texture, and thus the slurry distribution on the surface of the ceramic green body 1 can be completed. After subsequent drying, firing and polishing, a decorative layer can be formed on the surface of the ceramic green body 1.

[0088] Embodiment 3

[0089] A conveyor belt slurry distributing device has a structure as Figure 1 shown, and is composed of a slurry distributing system, a slurry conveyor belt 8, a buffer slurry tank 4, a slurry distributing roller 3 and a ceramic green body conveyor belt 10. The specific structure is as follows:

[0090] The slurry conveyor belt 8 is located above the ceramic green body conveyor belt 10, and the two are arranged in parallel. The conveying direction of the slurry on the slurry conveyor belt 8 is the same as that of the ceramic green body on the ceramic green body conveyor belt 10 (both are conveyed from right to left in Figure 1 . The surface of the slurry conveyor belt 8 is made of silicone rubber.

[0091] The slurry distributing system is located above the slurry conveyor belt 8 and is composed of four fixed digital slurry distributing mechanisms 9, a moving digital paintbrush 7 and a moving digital slurry distributing mechanism 6. The four fixed digital slurry distributing mechanisms 9, a moving digital paintbrush 7 and a moving digital slurry distributing mechanism 6 are arranged side by side in sequence along the conveying direction of the slurry conveyor belt 8. The structure of the moving digital slurry distributing mechanism 6 is as Figure 2 shown, and it is composed of a housing 6-1, a slurry inlet 6-2, a spray hole 6-3, a plug 6-4, an extrusion mechanism 6-5, a filtering mechanism 6-6 and a slurry distribution signal input end 6-7; the slurry inlet 6-2 is arranged on the side surface of the housing 6-1, and a filtering mechanism 6-6 composed of 5 layers of stainless steel screens with a mesh number of 50 is arranged at the slurry inlet 6-2; the spray hole 6-3 is arranged on the lower surface of the housing 6-1; the plug 6-4 is adapted to the spray hole 6-3 and is located directly above the spray hole 6-3. The plug 6-4 is made of rubber and has an inwardly concave structure on its lower surface; the extrusion mechanism 6-5 and the plug 6-4 are arranged inside the housing 6-1, and the plug 6-4 is connected to the lower end of the extrusion mechanism 6-5. The plug 6-4 is driven to move up and down by the extrusion mechanism 6-5. When the plug 6-4 moves to the lowest position, it can block the spray hole 6-3. When the plug 6-4 moves upward, an opening and closing gap is formed between the plug 6-4 and the spray hole 6-3, and the slurry can flow out from the opening and closing gap and the spray hole 6-3. The opening and closing gap adopts 0-100% continuous control; the slurry distribution signal input end 6-7 is arranged on the top of the housing 6-1 and is connected to the controller. The structure of the fixed digital slurry distributing mechanism 9 is the same as that of the moving digital slurry distributing mechanism 6. The moving digital paintbrush 7 is of a cylindrical structure, and the surface layer is made of silicone rubber and is also connected to the controller. The controller can control the fixed digital slurry distributing mechanism 9, the moving digital paintbrush 7 and the moving digital slurry distributing mechanism 6 to distribute slurry on the slurry conveyor belt 8 according to the set slurry distribution pattern, so that the slurry layer formed on the slurry conveyor belt 8 has the set pattern.

[0092] The buffer slurry tank 4 is made of stainless steel, located below the discharging end of the slurry conveyor belt 8 and above the ceramic green body conveyor belt 10. The slurry spreading roller 3 is a cylindrical silicone rubber roller with a silicone rubber surface and a Shore hardness of 20. It is located below the buffer slurry tank 4 and above the ceramic green body conveyor belt 10. Both the top and bottom of the buffer slurry tank 4 are provided with openings. The top opening faces the discharging end of the slurry conveyor belt 8, and the bottom opening faces the top of the slurry spreading roller 3. The buffer slurry tank 4 is surrounded by a front baffle 4-1, a rear baffle 4-2, and two side baffles. Among them: The front baffle 4-1 is located near the discharging end of the slurry spreading roller 3 and adopts a fixed design. A slurry discharging gap 11 with a width of 5 mm is formed between the lower end of the front baffle 4-1 and the surface of the slurry spreading roller 3, allowing the slurry in the buffer slurry tank 4 to flow out; The rear baffle 4-2 is located away from the discharging end of the slurry spreading roller 3 and adopts a fixed design. Its lower end fits with the surface of the slurry spreading roller 3 to prevent the slurry from flowing out from here; The two side baffles are located between the front baffle 4-1 and the rear baffle 4-2 and adopt a fixed design. Their lower ends fit with the surface of the slurry spreading roller 3. A hydrophobic film is provided on the inner surface of the slurry storage tank 4, and silicon carbide grains are discretely distributed in the hydrophobic film.

[0093] A rectangular conveyor belt scraper 5 made of rigid plastic is provided at the discharging end of the slurry conveyor belt 8. The upper end of the conveyor belt scraper 5 fits with the surface of the slurry conveyor belt 8, and the lower end faces the top opening of the buffer slurry tank 4, enabling the slurry flowing out from the discharging end of the slurry conveyor belt 8 to flow into the buffer slurry tank 4 via the conveyor belt scraper 5. A rectangular slurry spreading roller scraper 2 made of stainless steel is provided at the discharging end of the slurry spreading roller 3. The upper end of the slurry spreading roller scraper 2 fits with the surface of the slurry spreading roller 3, and the lower end faces the ceramic green body conveyor belt 10, enabling the slurry flowing out from the discharging end of the slurry spreading roller 3 to be dripped onto the ceramic green body 1 via the slurry spreading roller scraper 2.

[0094] Example 4

[0095] A conveyor belt slurry spreading device has a structure as Figure 1 shown, and is composed of a slurry spreading system, a slurry conveyor belt 8, a buffer slurry tank 4, a slurry spreading roller 3, and a ceramic green body conveyor belt 10. The specific structure is as follows:

[0096] The slurry conveyor belt 8 is located above the ceramic green body conveyor belt 10, and the two are arranged in parallel. The transmission direction of the slurry on the slurry conveyor belt 8 is the same as the transmission direction of the ceramic green body on the ceramic green body conveyor belt 10 (both are transmitted from right to left in Figure 1 ). The surface of the slurry conveyor belt 8 is made of silicone rubber.

[0097] The pulp distribution system is located above the pulp conveyor belt 8 and consists of a fixed digital pulp distribution mechanism 9, a movable digital paintbrush 7, and a movable digital pulp distribution mechanism 6. The fixed digital pulp distribution mechanism 9, the movable digital paintbrush 7, and the movable digital pulp distribution mechanism 6 are arranged side by side in sequence along the conveying direction of the pulp conveyor belt 8. The structure of the movable digital pulp distribution mechanism 6 is as shown in Figure 2 shown, which is composed of a housing 6-1, a pulp inlet 6-2, a spray hole 6-3, a plug 6-4, an extrusion mechanism 6-5, a filtering mechanism 6-6, and a pulp distribution signal input terminal 6-7. The pulp inlet 6-2 is arranged on the side surface of the housing 6-1, and a filtering mechanism 6-6 composed of 5 layers of stainless steel screens with a mesh number of 600 meshes is provided at the pulp inlet 6-2. The spray hole 6-3 is arranged on the lower surface of the housing 6-1. The plug 6-4 is adapted to the spray hole 6-3 and is located directly above the spray hole 6-3. The plug 6-4 is made of rubber, and the lower surface is a concave structure. The extrusion mechanism 6-5 and the plug 6-4 are arranged inside the housing 6-1, and the plug 6-4 is connected to the lower end of the extrusion mechanism 6-5. The plug 6-4 is driven to move up and down by the extrusion mechanism 6-5. When the plug 6-4 moves to the lowest position, it can block the spray hole 6-3. When the plug 6-4 moves upward, an opening and closing gap is formed between the plug 6-4 and the spray hole 6-3, and the pulp can flow out from the opening and closing gap and the spray hole 6-3. The opening and closing gap adopts a 0~100% continuous control. The pulp distribution signal input terminal 6-7 is arranged on the top of the housing 6-1 and is connected to the controller. The structure of the fixed digital pulp distribution mechanism 9 is the same as that of the movable digital pulp distribution mechanism 6. The movable digital paintbrush 7 is a cylindrical structure, and the surface layer is made of silicone rubber, which is also connected to the controller. The controller can control the fixed digital pulp distribution mechanism 9, the movable digital paintbrush 7, and the movable digital pulp distribution mechanism 6 to distribute pulp on the pulp conveyor belt 8 according to the set pulp distribution drawing, so that the pulp layer formed on the pulp conveyor belt 8 has the set pattern.

[0098] The buffer slurry tank 4 is made of stainless steel, located below the discharging end of the slurry conveyor belt 8 and above the ceramic green body conveyor belt 10. The slurry distributing roller 3 is a cylindrical silicone rubber roller with a silicone rubber surface and a Shore hardness of 80. It is located below the buffer slurry tank 4 and above the ceramic green body conveyor belt 10. Both the top and bottom of the buffer slurry tank 4 are provided with openings. The top opening faces the discharging end of the slurry conveyor belt 8, and the bottom opening faces the top of the slurry distributing roller 3. The buffer slurry tank 4 is surrounded by a front baffle 4-1, a rear baffle 4-2 and two side baffles. Among them: The front baffle 4-1 is located near the discharging end of the slurry distributing roller 3 and is designed in a fixed manner. A slurry discharging gap 11 with a width of 20 mm is formed between the lower end of the front baffle 4-1 and the surface of the slurry distributing roller 3, allowing the slurry in the buffer slurry tank 4 to flow out; The rear baffle 4-2 is located away from the discharging end of the slurry distributing roller 3 and is designed in a fixed manner. Its lower end is in contact with the surface of the slurry distributing roller 3 to prevent the slurry from flowing out from here; The two side baffles are located between the front baffle 4-1 and the rear baffle 4-2 and are designed in a fixed manner. Their lower ends are in contact with the surface of the slurry distributing roller 3. A hydrophobic film is provided on the inner surface of the slurry storage tank 4, and diamond abrasives are discretely distributed in the hydrophobic film.

[0099] A triangular conveyor belt scraper 5 made of rigid plastic is provided at the discharging end of the slurry conveyor belt 8. The upper end of the conveyor belt scraper 5 (i.e., the bottom edge of the triangle) is in contact with the surface of the slurry conveyor belt 8, and the lower end (i.e., the tip of the triangle) faces the top opening of the buffer slurry tank 4, so that the slurry flowing out from the discharging end of the slurry conveyor belt 8 can flow into the buffer slurry tank 4 via the conveyor belt scraper 5. A rectangular slurry distributing roller scraper 2 made of stainless steel is provided at the discharging end of the slurry distributing roller 3. The upper end of the slurry distributing roller scraper 2 is in contact with the surface of the slurry distributing roller 3, and the lower end faces the ceramic green body conveyor belt 10, so that the slurry flowing out from the discharging end of the slurry distributing roller 3 can be showered onto the ceramic green body 1 via the slurry distributing roller scraper 2.

[0100] For the devices, connection structures and methods involved in the present invention, unless otherwise specified, they are all well-known devices, connection structures and methods in the art. The controller involved in the present invention is a conventional controller in the prior art and is not the technical key point of the present invention.

[0101] The above description is only a preferred embodiment of the present invention and does not impose any limitation on the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A conveyor belt pulp distributing device, characterized in that: include: Slurry conveyor belt; A slurry distribution system disposed above the slurry conveyor belt; A ceramic body conveyor belt disposed below the slurry conveyor belt; A slurry distribution roller and a buffer slurry tank are located below the unloading end of the slurry conveyor belt and above the ceramic body conveyor belt; openings are provided above and below the buffer slurry tank, the upper opening faces the unloading end of the slurry conveyor belt, and the lower opening faces the top of the slurry distribution roller; the buffer slurry tank is surrounded by a front baffle plate close to the unloading end of the slurry distribution roller, a rear baffle plate away from the unloading end of the slurry distribution roller, and two side baffle plates located between the front baffle plate and the rear baffle plate, the lower end of the rear baffle plate is in contact with the surface of the slurry distribution roller, and a slurry outlet gap is provided between the lower end of the front baffle plate and the slurry distribution roller.

2. The conveyor belt pulp dispensing device according to claim 1, characterized in that: The front baffle is a lifting baffle.

3. The conveyor belt pulp distributing device according to claim 1 or 2, characterized in that: The width of the slurry discharge gap is 2-20 mm.

4. The conveyor belt pulp dispensing device according to claim 1, characterized in that: A conveyor belt scraper is provided at the unloading end of the slurry conveyor belt; the upper end of the conveyor belt scraper is in contact with the surface of the slurry conveyor belt, and the lower end faces the buffer slurry tank.

5. The conveyor belt pulp distributing device according to claim 1, characterized in that: A slurry roller scraper is provided at the unloading end of the slurry roller; the upper end of the slurry roller scraper is in contact with the surface of the slurry roller, and the lower end faces the ceramic body conveyor belt.

6. The conveyor belt pulp distributing device according to claim 1, characterized in that: The pulping system comprises at least one mobile digital pulping mechanism, at least one mobile digital paintbrush and at least one fixed digital pulping mechanism.

7. The conveyor belt pulp distributing device according to claim 6, characterized in that: The structure of the mobile digital pulp spreading mechanism and / or the fixed digital pulp spreading mechanism is as follows: it includes a shell; the shell is provided with a pulp inlet and a spray hole; the shell is provided with a plug adapted to the spray hole and a squeezing mechanism for controlling the up and down movement of the plug; the plug is located above the spray hole.

8. The conveyor belt pulp distributing device according to claim 7, characterized in that: The lower surface of the plug is a concave structure.

9. The conveyor belt pulp dispensing device according to claim 1, characterized in that: A hydrophobic film is provided on the inner surface of the buffer slurry tank.

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