An automatic stone plate defect filling device

Abstract

The application provides a stone slab defect automatic filling device, and relates to the technical field of stone slab repairing devices. The device comprises a conveying device, a feeding device and a grading device. The grading device comprises a support arranged on a frame, at least a first roller brush, a second roller brush, a first filter screen, a second filter screen and a driving device are arranged on the support. The first filter screen is arranged below the first roller brush and is connected to the feeding device. The second filter screen is arranged below the second roller brush. The filter hole diameter of the first filter screen is smaller than that of the second filter screen. The first roller brush is arranged in front of the second roller brush along the advancing direction of the stone slab. The height distance between the first roller brush and the stone slab is higher than that between the second roller brush and the stone slab. The driving device is drivingly connected to the first roller brush and the second roller brush, and is used for driving the first roller brush and the second roller brush to rotate in the same direction. Through the application, the powder laying efficiency can be improved, and the powder grading automation can be realized.

Description

Technical Field

[0001] This invention relates to the field of stone slab repair device technology, and more specifically, to an automatic stone slab defect filling device. Background Technology

[0002] After stone blocks are cut into slabs, their surfaces are often prone to micro-cracks, sand holes, ant trails, chicken claw patterns, and unevenness, affecting the stone's appearance. To address these issues, a powder is typically applied to the stone surface. During the powdering process, larger voids are filled with coarse stone powder, while smaller voids are filled with fine powder. After applying the powder, adhesive is brushed onto the stone surface. This process improves the stone's strength and extends its lifespan. Traditionally, stone powder is applied manually to fill defects. However, this manual method is inefficient, labor-intensive, requires pre-grading, and necessitates the preparation of various powders, making it difficult to meet the production needs of enterprises. While mechanical powdering methods exist, they can only use the same type of powder. This makes it impossible to grade the powder when applying it to voids of different sizes on the stone slab, resulting in poor powdering quality. Summary of the Invention

[0003] This invention discloses an automatic filling device for stone slab defects. It has a simple structure and is easy to operate, and aims to improve the problem that existing stone powder spreading devices cannot classify the powder.

[0004] The present invention adopts the following solution:

[0005] This application provides an automatic defect filling device for stone slabs, including a frame with a conveying device on the frame, and further including a feeding device and a grading device. The grading device includes a support mounted on the frame, and at least a first roller brush, a second roller brush, a first filter screen, a second filter screen, and a driving device are mounted on the support. The first filter screen is located below the first roller brush and connected to the feeding device, and the second filter screen is located below the second roller brush, with the pore size of the first filter screen being smaller than that of the second filter screen. The first roller brush is positioned in front of the second roller brush along the forward direction of the stone slab, and the height distance between the first roller brush and the stone slab is greater than that of the second roller brush. The driving device drives the first roller brush and the second roller brush to rotate in the same direction, so that the powder is graded at the first filter screen and the second filter screen.

[0006] Furthermore, the bracket is provided with a mounting frame, which includes a first mounting groove and a second mounting groove. The bottom of the first mounting groove and the second mounting groove are hollowed out and are set in an arc shape to place the first filter screen and the second filter screen.

[0007] Furthermore, the height of the first filter screen is higher than that of the second filter screen. Furthermore, a flexible scraper is provided between the first roller brush and the second roller brush.

[0008] Furthermore, the grading device is provided with a brush assembly at the front end along the direction of stone slab movement. The brush assembly includes a motion device, a gantry frame, and a brush. The motion device is mounted on the gantry frame and connected to the brush to drive the brush to move on the stone slab plane in a direction perpendicular to the direction of stone slab movement.

[0009] Furthermore, recycling bins are provided on both sides of the conveying device.

[0010] Furthermore, the conveying device is equipped with a vibrator.

[0011] Furthermore, the first and second roller brushes are provided with sprockets, one of which is driven to the drive device, and the two sprockets are connected by a chain drive.

[0012] Beneficial effects:

[0013] This invention utilizes a grading device above the conveying device to classify the powder entering from the feeding device. When the powder falls into the first filter screen, because the pore size of the first filter screen is smaller than that of the second filter screen, powder particles with a diameter smaller than the pore size of the first filter screen fall directly through the first filter screen. Powder particles with a pore size larger than the pore size are swept to the second filter screen by the rolling action of the first roller brush, and then filtered again by the second filter screen. When multiple filters and roller brushes are used, multiple grading can be achieved, thus covering different powders in the same process. Here, because the second filter screen is located behind the first filter screen along the direction of stone slab movement, when the stone slab enters, coarser powder is first scattered, and then scraped apart by a flexible scraper, allowing the coarse powder to fall into larger cavities in the stone, while removing excess powder. When the stone slab continues to move below the first filter screen, finer powder is scattered, thereby filling smaller cavities in the stone that cannot be filled by the coarse powder, thus comprehensively filling the cavities and making the filling more thorough. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic stone slab defect filling device according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a grading device for an automatic stone slab defect filling device according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the mounting frame and the first and second filters of the grading device of an automatic stone slab defect filling device according to an embodiment of the present invention.

[0017] Icons: 1. Feeding device; 2. First roller brush; 3. Second roller brush; 4. First filter screen; 5. Second filter screen; 6. Sprocket; 7. Chain; 8. Drive device; 9. Support frame; 10. Gantry frame; 11. Motion device; 12. Stepper motor; 13. Plate brush; 15. Vibrator; 20. Flexible scraper; 21. Transmission wheel; 30. Recycling box. Detailed Implementation

[0018] Combination Figures 1 to 3 As shown, this embodiment provides an automatic stone slab defect filling device, including a frame with a conveying device on it, and further including a feeding device 1 and a grading device. The grading device includes a support 9 mounted on the frame, and at least a first roller brush 2, a second roller brush 3, a first filter screen 4, a second filter screen 5, and a driving device 8 are mounted on the support 9. The first filter screen 4 is located below the first roller brush 2 and connected to the feeding device 1, and the second filter screen 5 is located below the second roller brush 3. The pore size of the first filter screen 4 is smaller than that of the second filter screen 5. The first roller brush 2 is located in front of the second roller brush 3 along the forward direction of the stone slab, and the height distance between the first roller brush 2 and the stone slab is greater than that of the second roller brush 3. The driving device 8 drives the first roller brush 2 and the second roller brush 3 to rotate in the same direction, so that the powder is graded at the first filter screen 4 and the second filter screen 5.

[0019] In this embodiment, the conveying device is used to convey stone. It is mounted on a frame and includes a conveying roller with a drive wheel 21. The drive wheel 21 conveys the stone slabs. Furthermore, a lifting device is also provided on the conveying roller to control the height of the drive wheel. When the wheel rises, it supports the stone for conveying; when it descends, the stone falls onto the frame, facilitating processing by the user. In this embodiment, the stone is in motion during powder application; the direction of movement of the stone on the conveying device is defined as the forward direction. In one embodiment, a vibrator 15 is also provided on the conveying device. The vibrator 15 causes the stone slab to vibrate after the powder falls, thereby compacting the powder within the cavities of the stone slab.

[0020] Combination Figures 1 to 3As shown, the grading device is mounted directly above the conveying device via a bracket 9, allowing powder to be applied during stone conveying. Specifically, the grading device includes at least a first roller brush 2, a second roller brush 3, a first filter screen 4, and a second filter screen 5. The first filter screen 4 is positioned below the first roller brush 2, and the second filter screen 5 is positioned below the second roller brush 3, thus achieving two-stage filtration. In other embodiments, more roller brushes and filters can be provided to achieve more stages of filtration. For ease of explanation, this embodiment uses two-stage filtration. The feeding device 1 is configured as a hopper, which is connected to the inside of the first filter screen 4, allowing the powder to enter the first filter screen 4 for initial filtration.

[0021] The support 9 is provided with a mounting frame, which includes a first mounting groove and a second mounting groove. The bottoms of the first and second mounting grooves are hollowed out and are arc-shaped, such as semi-cylindrical, to accommodate the first filter screen 4 and the second filter screen 5. One side of the first and second mounting grooves is connected to each other, so that the first filter screen 4 and the second filter screen 5 are interconnected. Furthermore, the installation height of the first filter screen 4 is higher than that of the second filter screen 5, which facilitates the entry of powder from the first filter screen 4 into the second filter screen 5. In another embodiment, the first filter screen 4 and the second filter screen 5 are inclined on the support 9, and the inclination is downward from the first filter screen 4 to the second filter screen 5, so that the powder falling from the first filter screen 4 can easily enter the second filter screen 5. The first filter screen 4 is positioned at the front end of the second filter screen 5 along the movement direction of the stone, so that when powder is applied, the powder in the second filter screen 5 will fall onto the stone slab first for the initial powder application. The first roller brush 2 and the second roller brush 3 are respectively positioned above the first filter screen 4 and the second filter screen 5, and close to the mesh surfaces of the first filter screen 4 and the second filter screen 5. Each roller brush has protruding brush strips, which drive the powder falling into the filter screen as the first roller brush 2 or the second roller brush 3 rolls. For example, in the first filter screen 4, fine powder falls through the first filter screen 4 after entering, while coarser powder, under the action of the brush strips, climbs along the arc-shaped filter screen and mounting groove to the connection point between the first filter screen 4 and the second filter screen 5, and enters the second filter screen 5 for further grading. The gap between the roller brush and the filter screen can be adjusted according to the required particle size of the powder, thereby meeting different grading needs and improving applicability.

[0022] Combination Figure 1As shown, in this embodiment, the first roller brush 2 and the second roller brush 3 are equipped with sprockets 6. One of the sprockets 6 is driven to the driving device 8, and the two sprockets 6 are driven to each other via a chain 7. Here, the driving device 8 is a drive motor, used to drive one of the roller brushes to rotate, thereby driving the other roller brush to rotate in the same direction via the chain 7. In this embodiment, the roller brushes rotate counterclockwise, thereby driving the powder in the first filter screen 4 into the second filter screen 5.

[0023] Combination Figure 1 As shown, in one embodiment, a flexible scraper 20 is provided between the first roller brush 2 and the second roller brush 3. The flexible scraper 20 extends to the stone slab, so that after the coarser powder from the second filter screen 5 falls, it can scrape off the coarser powder first, so that the powder that cannot enter the cavities of the stone slab is scraped off, thus facilitating the finer powder from the first filter screen 4 to smoothly enter the smaller cavities. Here, the flexible scraper 20 is arranged horizontally in the direction of movement of the stone slab, and it can be a scraper made of rubber or silicone material, used to scrape off the powder that cannot enter the cavities.

[0024] Combination Figure 1 As shown, in this embodiment, a brush 13 assembly is further provided at the front end of the grading device along the movement direction of the stone slab. The brush 13 assembly includes a motion device 11, a gantry frame 10, and a brush 13. The motion device 11 is mounted on the gantry frame 10 and connected to the brush 13 to drive the brush 13 to move on the stone slab plane in a direction perpendicular to the movement direction of the stone slab. Here, the motion device 11 can use a ball screw structure and a stepper motor 12 to fix the brush 13 on the slider of the ball screw structure. Driven by the stepper motor 12, the brush 13 can scrape back and forth above the stone slab. Here, the brush 13 can also be made of a flexible material. The ball screw structure drives the brush 13 to move back and forth on the surface of the stone slab, scraping the powder to both sides. Here, the motion device 11 can also be driven by a linear guide rail and a linear motor. In a preferred embodiment, recycling bins 30 are provided on both sides of the conveying device. The recycling bins 30 can collect the powder scraped off by the brush 13, facilitating the reuse of the powder. Of course, a recycling device can also be provided at the bottom of the conveying device to collect the powder scraped off by the flexible scraper 20, as well as the powder that falls from the first filter screen 4 and the second filter screen 5 but does not fall onto the stone slab.

[0025] During operation, powder enters the first filter screen 4 from the feeding device 1, facing the side of the brush 13. The powder is initially filtered within the first filter screen 4, causing the finer powder to fall onto the stone slab on the conveying device. At this time, the coarser powder, unable to fall, is carried by the first roller brush 2, tumbling over the partition between the first roller brush 2 and the second roller brush 3, and entering the second filter screen 5. It is filtered through the second filter screen 5. Powder that cannot pass through the second filter screen 5 is carried out by the second roller brush 3 and falls directly onto the stone slab. When the stone slab enters, it enters from the edge of the second filter screen 5. The largest particles fall onto the stone slab first, filling the larger holes. As the slab continues to move forward, particles falling through the filters of the second filter 5 are scattered onto the slab and enter suitable holes. During further movement, particles that have fallen but not yet entered holes are scraped away by the flexible scraper 20, exposing smaller holes. When the slab reaches below the first filter 4, finer particles falling from the first filter 4 fill any unfilled holes. Finally, excess particles are scraped away by the brush 13 at the end, achieving waste recovery. Throughout the entire movement of the slab, the vibrator 15 continues to vibrate, compacting the particles within the holes.

[0026] This invention achieves the grading of powder and distributes it onto a stone slab, thereby filling all the voids in the stone slab. It realizes the function of filling large voids with large powder and small voids with small powder. The whole process is simple in structure and easy to operate, and realizes the automation of grading, effectively improving the efficiency of automatic powder spreading.

[0027] It should be understood that the above are merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0028] The accompanying drawings used in the above description of the embodiments only illustrate certain embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. An automatic filling device for defects in stone slabs, comprising a frame, wherein a conveying device is disposed on the frame, characterized in that, Also includes: The device includes a feeding device and a grading device. The grading device comprises a support mounted on a frame, on which at least a first roller brush, a second roller brush, a first filter screen, a second filter screen, and a driving device are mounted. The first filter screen is positioned below the first roller brush and connected to the feeding device. The second filter screen is positioned below the second roller brush, and the pore size of the first filter screen is smaller than that of the second filter screen. The first roller brush is positioned in front of the second roller brush along the forward direction of the stone slab, and the height distance between the first roller brush and the stone slab is greater than that of the second roller brush. The driving device drives the first roller brush and the second roller brush for... The first and second roller brushes are driven to rotate in the same direction, so that the powder is graded at the first and second filter screens. The support is provided with a mounting frame, which includes a first mounting groove and a second mounting groove. The bottom of the first and second mounting grooves is hollowed out and is set in an arc shape to place the first and second filter screens. The front end of the grading device along the movement direction of the stone slab is provided with a brush assembly. The brush assembly includes a motion device, a gantry frame and a brush. The motion device is set on the gantry frame and connected to the brush to drive the brush to move on the stone slab plane in a direction perpendicular to the movement direction of the stone slab.

2. The automatic stone slab defect filling device according to claim 1, characterized in that, The height of the first filter is higher than that of the second filter.

3. The automatic stone slab defect filling device according to claim 1, characterized in that, A flexible scraper is provided between the first roller brush and the second roller brush.

4. The automatic stone slab defect filling device according to claim 1, characterized in that, Recycling bins are installed on both sides of the conveying device.

5. The automatic stone slab defect filling device according to claim 1, characterized in that, The conveying device is equipped with a vibrator.

6. The automatic stone slab defect filling device according to claim 1, characterized in that, The first and second rollers are equipped with sprockets, one of which is driven to the drive device, and the two sprockets are connected by a chain drive.

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