Sanding machine and green brick conveying device and method

Abstract

The invention discloses a sanding machine and a green brick conveying device and method, and relates to the technical field of green brick firing. Comprising a sand discharging assembly, a uniformizing assembly and a sensing assembly which are arranged on a rack, the uniformizing assembly is arranged below the sand discharging assembly, the sand discharging assembly conveys quartz sand to the uniformizing assembly, and when a base plate passes through the lower portion of the uniformizing assembly, the uniformizing assembly spreads the quartz sand into the surface of a green brick. The method has the advantages that a fired finished product cannot be adhered to the base plate, and the yield is high.

Description

Technical Field

[0001] The invention relates to the technical field of brick blank firing, and in particular to a sand spreader, a brick blank conveying device and a method. Background Art

[0002] Before firing, the brick blanks need to be formed and placed on a high-temperature resistant pad and sent into the kiln for firing. In the actual firing process, it is found that the brick blanks are in direct contact with the pad and are easy to adhere to the pad. After the brick blanks are fired and formed into finished products, the bottom of the finished product adheres to the pad, making it difficult to separate the bricks. In order to complete the separation operation between the bricks, it is usually necessary to clamp the finished product with great force, which can easily cause the bottom of the finished product to fall off, and in severe cases, it can also cause the finished product to break, affecting the yield rate. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a sand spreader, a brick conveying device and a method.

[0004] The sand spreader of the present invention is implemented by the following technical scheme: a sand spreader, comprising a sand lowering component, a uniform component and a sensing component arranged on a frame, wherein the uniform component is placed below the sand lowering component, the sand lowering component transports quartz sand to the uniform component, and when a pad passes under the uniform component, the uniform component sprinkles quartz sand onto the surface of the brick blank.

[0005] The sand discharge assembly includes a hopper and a discharge part, wherein the discharge part is arranged in the hopper and rotates in the hopper, and a sand outlet is provided at the bottom of the hopper, and the sand outlet is located directly above the uniform assembly and is connected to the uniform assembly.

[0006] The material discharge part includes the sand outlet which is connected to the uniform component through a pipeline, and a valve is provided at the end of the pipeline.

[0007] The unloading part comprises a rotating screw, which is arranged at the discharge port, one end of which faces the uniform component, and the rotation of the rotating screw drives the quartz sand to fall toward the uniform component.

[0008] The uniform component comprises a driving roller, a driven roller and a belt, wherein the driving roller and the driven roller are arranged on the frame, the belt is wound between the driving roller and the driven roller, and the lower sand component conveys quartz sand to the belt.

[0009] The belt is provided with a plurality of crisscross grooves, into which the quartz sand falls, and the belt is driven by the active roller to translate. When the belt turns over, the quartz sand falling into the grooves falls on the pad.

[0010] A scraping assembly is provided on the frame, and the scraping assembly includes a scraping plate and a linear drive device. The linear drive device is fixed on the frame, and the scraping plate is fixed on the driving shaft of the linear drive device. The scraping plate is driven by the linear drive device to fit the belt, and a brush is provided on one end of the scraping plate facing the belt.

[0011] The induction component comprises an induction probe, one end of which is fixed on the frame, and the pad passes under the induction probe and the uniform component in sequence.

[0012] The brick conveying device of the present invention is implemented by the following technical scheme: a brick conveying device, using a sand spreader, includes a conveying roller, the conveying roller is arranged on the frame and below the uniform component, the pad is placed on the conveying roller and is conveyed by the conveying roller to pass through the sensing component and the uniform component in sequence.

[0013] The processing method disclosed in the present invention is implemented by the following technical solution: A processing method, which is implemented by using a brick conveying device, comprises the following steps:

[0014] The pad conveying step is to place the pads on the conveying rollers in turn, and the pads are driven by the conveying rollers to move below the uniform component. When the pads pass through the sensing component, the edge of the pads is placed below the uniform component. At this time, the sand lowering component and the uniform component act to perform the sand spreading step;

[0015] Sand supplying step, when the edge of the pad is placed under the uniform component, the quartz sand falls toward the uniform component and falls on the belt;

[0016] In the sand spreading step, the active roller drives the belt to move, and the conveying roller drives the pad to move. When the belt passes under the belt, the quartz sand on the belt falls onto the pad.

[0017] In the step of placing the blank, the conveying roller drives the pad to move continuously, and after moving to the next station, the blank is sucked up by the negative pressure device and placed on the pad;

[0018] In the kiln firing step, the conveyor roller drives the pad with the bricks to move continuously into the kiln for firing and forming.

[0019] Compared with the prior art, the conveying roller of the present invention first needs to drive the pad through the sand spreader to sprinkle a layer of quartz sand on the surface of the pad, and then the pad continues to move driven by the conveying roller until it reaches the next workstation to place the brick blank on the pad, that is, when the brick blank is placed on the pad, there is actually a thin layer of quartz sand between the brick blank and the pad, and after the pad and the brick blank are sent into the kiln for firing and forming, the quartz sand forms an isolation effect between the pad. At this time, the formed brick will basically not stick to the pad due to the isolation effect of the quartz sand, that is, the formed brick can be easily removed from the pad, thereby reducing the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the brick conveying device of the present invention;

[0021] Figure 2 It is a structural diagram of a sand spreader;

[0022] Figure 3 It is a schematic diagram of the belt surface in a sand spreader;

[0023] In the figure: 1. frame; 2. sand discharge component; 21. hopper; 22. discharge part; 221. valve; 222. pipeline; 223. rotating screw; 3. uniform component; 31. active roller; 32. driven roller; 33. belt; 34. groove; 4. induction component; 5. conveying roller; 6. scraping component; 61. scraping plate; 62. linear drive device; 63. brush; 7. recovery bucket. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Reference Figure 1-3 , a brick blank conveying device, which is composed of at least a frame 1 and a conveying roller 5. In the device, the conveying roller 5 is installed on the frame 1, and the pad can be placed on the conveying roller 5 and driven forward by the conveying roller 5. The conveying roller 5 can be driven by a conventional chain sprocket. The conveying roller 5 first needs to drive the pad through a sand spreader to sprinkle a layer of quartz sand on the surface of the pad, and then the pad continues to move under the drive of the conveying roller 5 until it reaches the next station to place the brick blank on the pad, that is, when the brick blank is placed on the pad, there is actually a thin layer of quartz sand between the brick blank and the pad. After the pad is sent into the kiln together with the brick blank for firing and forming, the quartz sand forms an isolation effect between the pad. At this time, the formed brick will basically not adhere to the pad due to the isolation effect of the quartz sand, that is, the formed brick can be easily removed from the pad, thereby reducing the defective rate.

[0026] The sand spreader used in the brick conveying device shares a frame 1 with the brick conveying device, and includes a sand lowering component 2, a uniform component 3 and a sensing component 4. The sand lowering component, the uniform component 3 and the sensing component 4 are all installed on the frame 1. The uniform component 3 is placed below the sand lowering component 2, and the sand lowering component 2 conveys quartz sand to the uniform component 3, and the uniform component 3 is placed directly above the conveying roller 5. When the conveying roller 5 drives the pad to pass under the uniform component 3, the uniform component 3 sprinkles quartz sand on the surface of the brick, so as to form a layer of quartz sand on the surface of the pad.

[0027] Specifically, the sand discharge assembly 2 includes a hopper 21 and a discharge portion 22. The discharge portion 22 is disposed in the hopper 21 and rotates in the hopper 21. A sand outlet is provided at the bottom of the hopper 21. The sand outlet is located directly above the uniform assembly 3 and communicates with the uniform assembly 3. The discharge portion 22 includes a sand outlet that is communicated with the uniform assembly 3 through a pipe 222. A valve 221 is provided at the end of the pipe 222. When in use, the end of the pipe 222 is always attached to the surface of the uniform assembly 3 to ensure that the quartz sand can be delivered to the uniform assembly 3 more accurately. The discharge portion 22 includes a rotating screw 223. The rotating screw 223 can be installed at the discharge port or above the valve 221 built into the pipe 222. One end of the rotating screw 223 faces the uniform assembly 3, that is, the rotating screw 223 rotates to drive the quartz sand to fall toward the uniform assembly 3. The rotating screw 223 is used to achieve the effect of spiral conveying to control the amount and speed of quartz sand output, thereby making the quartz sand output more uniform and reducing the accumulation of quartz sand on the uniform component 3, so that when the uniform component 3 is in action, the quartz sand is driven to be distributed more evenly on the surface of the pad.

[0028] Specifically, the uniform component 3 includes an active roller 31, a driven roller 32 and a belt 33. The active roller 31 and the driven roller 32 are arranged on the frame 1. The belt 33 is wound between the active roller 31 and the driven roller 32. The active roller 31 and the driven roller 32 can tension the belt 33, and then the belt 33 is driven to rotate by the rotation of the active roller 31 and the driven roller 32. The end of the pipe 222 is directly above the belt 33 and there is only a small gap between the belt 33, which can greatly reduce the phenomenon of quartz sand falling randomly, so that the quartz sand can fall on the surface of the belt 33 as much as possible, reducing the waste of quartz sand.

[0029] On the basis of the above scheme, a plurality of crisscross grooves 34 can be provided on the belt 33, that is, a grid-like pattern is formed on the surface of the belt 33, and the quartz sand finally falls into the grooves 34, and the belt 33 is driven by the active roller 31 to translate. When the belt 33 flips, the quartz sand that falls into the grooves 34 falls on the pad. Correspondingly, a scraping assembly 6 is provided on the frame 1, and the scraping assembly 6 includes a scraping plate 61 and a linear drive device 62, the linear drive device 62 is fixed on the frame 1, the scraping plate 61 is fixed on the driving shaft of the linear drive device 62, the scraping plate 61 is driven by the linear drive device 62 to fit the belt 33, and a brush 63 is provided on one end of the scraping plate 61 facing the belt 33. On the one hand, the brush 63 pushes the piled quartz sand to be flattened so that the quartz sand can be placed in the grooves 34, and at the same time, the mutual movement of the brush 63 and the belt 33 can scrape the excess quartz sand on the belt 33 to control the amount of quartz sand. A recovery device needs to be fixed below the conveying roller 5. When the quartz sand falls from the belt 33, the excess quartz sand will pass through the conveying roller 5 and fall into the recovery device, thereby reducing the waste of quartz sand.

[0030] The recovery device can be a recovery bucket 7 fixed on the frame 1. The recovery bucket 7 is placed as a whole below the conveying roller 5. The upper opening of the recovery bucket 7 covers the entire conveying roller 5, and the quartz sand falling from the gap of the conveying roller 5 directly falls into the recovery bucket 7. The inner wall of the recovery bucket 7 is inclined so that the quartz sand gathers at the lowest point of the recovery bucket 7. The bottom of the recovery bucket 7 is provided with a lower opening, and the lower opening is located at the lowest point of the recovery bucket 7. The quartz sand gathered in the recovery bucket 7 can be recycled from the lower opening. Specifically, a recovery pipe can be connected to the lower opening, and the recovery pipe extends obliquely to one side of the frame 1 and is connected to a recovery box or a recovery bucket placed on one side of the frame 1, so that the quartz sand can be recovered and the waste of quartz sand can be reduced.

[0031] The motors and valves 221 used to drive the conveying roller 5, the active roller 31, the rotating screw 223 respectively can realize automatic control. Specifically, the sensing component 4 is fixed on the frame 1. The sensing component 4 includes a sensing probe, one end of which is fixed on the frame 1, and the pad passes under the sensing probe and the uniform component 3 in turn. A controller is also required to match the sensing probe, and the controller is preferably an industrial computer or PLC with good scalability. The sensing probe can be an infrared probe, and the infrared probe, several motors that drive different components respectively, and the valve 221 are respectively connected to the controller by signal to realize coordinated action and automatic control, reduce work intensity and improve work efficiency.

[0032] The specific method of using the above-mentioned brick conveying device to convey bricks to the kiln for firing is shown in the following steps:

[0033] The pad conveying step is to place the pads on the conveying rollers 5 in sequence, and the pads are driven by the conveying rollers 5 to move below the uniform component 3 until they move to the sensing component 4 and are sensed by the sensing probe. At this time, the edge of the pad is placed below the uniform component 3. As the sensing probe senses the pad, the rotating screw 223 is started, and then the belt 33 also moves, that is, the sand supply step is performed;

[0034] In the sand supply step, when the edge of the pad is placed under the uniform component 3, the rotating screw 223 rotates to push the quartz sand to fall toward the uniform component 3, and the quartz sand falls on the belt 33;

[0035] In the sand spreading step, the active roller 31 drives the belt 33 to move, and the conveying roller 5 drives the pad to move, passing under the belt 33, and the quartz sand on the belt 33 falls onto the pad;

[0036] In the step of placing the brick blanks, the conveying roller 5 drives the pad to move continuously, and after moving to the next station, the brick blanks are clamped and placed on the pad;

[0037] In the kiln firing step, the conveying roller 5 drives the pad to move continuously, driving the bricks into the kiln for firing and forming.

[0038] Compared with the prior art, the conveying roller 5 of the present invention first needs to drive the pad through the sand spreader to sprinkle a layer of quartz sand on the surface of the pad, and then the pad continues to move under the drive of the conveying roller 5 until it reaches the next station to place the brick blank on the pad, that is, when the brick blank is placed on the pad, there is actually a thin layer of quartz sand between the brick blank and the pad, and after the pad and the brick blank are sent into the kiln for firing and forming, the quartz sand forms an isolation effect between the pad. At this time, the formed bricks will basically not stick to the pad due to the isolation effect of the quartz sand, that is, the formed bricks can be easily removed from the pad, thereby reducing the defective rate.

[0039] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A sand spreading machine, characterized in that: It includes a sand lowering component, a uniform component and a sensing component which are arranged on a frame. The uniform component is placed below the sand lowering component. The sand lowering component transports quartz sand to the uniform component. When a pad passes under the uniform component, the uniform component sprinkles quartz sand onto the surface of the brick blank.

2. A sand spreading machine according to claim 1, characterized in that: The sand discharge assembly includes a hopper and a discharge part, wherein the discharge part is arranged in the hopper and rotates in the hopper, and a sand outlet is provided at the bottom of the hopper, and the sand outlet is located directly above the uniform assembly and is connected to the uniform assembly.

3. A sand spreading machine according to claim 2, characterized in that: The material discharge part includes the sand outlet which is connected to the uniform component through a pipeline, and a valve is provided at the end of the pipeline.

4. A sand spreading machine according to claim 2 or 3, characterized in that: The unloading part comprises a rotating screw, which is arranged at the discharge port, one end of which faces the uniform component, and the rotation of the rotating screw drives the quartz sand to fall toward the uniform component.

5. A sand spreading machine according to claim 1, characterized in that: The uniform component comprises a driving roller, a driven roller and a belt, wherein the driving roller and the driven roller are arranged on the frame, the belt is wound between the driving roller and the driven roller, and the unloading component transports quartz sand to the surface of the belt.

6. A sand spreading machine according to claim 5, characterized in that: The belt is provided with a plurality of crisscross grooves, into which the quartz sand falls, and the belt is driven by the active roller to translate. When the belt turns over, the quartz sand falling into the grooves falls on the pad.

7. A sand spreading machine according to claim 6, characterized in that: A scraping assembly is provided on the frame, and the scraping assembly includes a scraping plate and a linear drive device. The linear drive device is fixed on the frame, and the scraping plate is fixed on the driving shaft of the linear drive device. The scraping plate is driven by the linear drive device to fit the belt, and a brush is provided on one end of the scraping plate facing the belt.

8. A sand spreading machine according to claim 1, characterized in that: The induction component comprises an induction probe, one end of which is fixed on the frame, and the pad passes under the induction probe and the uniform component in sequence.

9. A brick conveying device, characterized in that: The sand spreader described in any one of claims 1 to 8 comprises a conveying roller, wherein the conveying roller is arranged on the frame and below the uniform component, and the pad is placed on the conveying roller and transported by the conveying roller to pass through the sensing component and the uniform component in sequence.

10. A processing method, characterized in that: The brick conveying device according to claim 9 is implemented by using the following steps: The pad conveying step is to place the pads on the conveying rollers in turn, and the pads are driven by the conveying rollers to move below the uniform component. When the pads pass through the sensing component, the edge of the pads is placed below the uniform component. At this time, the sand lowering component and the uniform component act to perform the sand spreading step; Sand supplying step, when the edge of the pad is placed under the uniform component, the quartz sand falls toward the uniform component and falls on the belt; In the sand spreading step, the active roller drives the belt to move, and the conveying roller drives the pad to move. When the belt passes under the belt, the quartz sand on the belt falls onto the pad. In the step of placing the brick blanks, the conveying roller drives the pad to move continuously, and after moving to the next station, the brick blanks are sucked up by the negative pressure device and placed on the pad; In the kiln firing step, the conveyor roller drives the pad with the bricks to move continuously into the kiln for firing and forming.

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