A sand spreader, a brick conveying device and method

Abstract

The application discloses a sand spreading machine, a green brick conveying device and a method, and relates to the technical field of green brick firing. The device comprises a sand dropping assembly, a uniform assembly and an induction assembly arranged on a rack. The uniform assembly is arranged below the sand dropping assembly. The sand dropping assembly conveys quartz sand to the uniform assembly. The uniform assembly spreads the quartz sand onto the surface of the green brick when the green brick passes below the uniform assembly. The application has the advantages that the finished product after firing is not bonded with the cushion plate, and the yield is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of brick firing, in particular to a sanding machine, a brick conveying device and a method. BACKGROUND

[0002] Before the brick firing, a forming process is needed and the formed bricks are placed on the high-temperature-resistant pad and sent into the kiln for firing and forming. It is found in the actual firing process that the bricks are in direct contact with the pad and are easy to adhere to the pad. After the bricks are fired and formed into finished products, the bottom of the finished product is adhered to the pad, and it is difficult to separate the bricks. In order to complete the separation operation between the bricks, the finished product usually needs to be clamped with great force, which is easy to cause the bottom of the finished product to fall off, and even cause the finished product to break, affecting the yield. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a sanding machine, a brick conveying device and a method.

[0004] The sanding machine of the present application adopts the following technical scheme: a sanding machine, comprising a sanding assembly, a uniform assembly and a sensing assembly arranged on a rack, the uniform assembly is arranged below the sanding assembly, the sanding assembly sends quartz sand to the uniform assembly, the bricks are placed on the pad, the pad is driven by the conveying roller, and the pad passes below the uniform assembly, and the uniform assembly pours quartz sand into the surface of the bricks.

[0005] The sanding assembly comprises a hopper and a discharging part, the discharging part is arranged in the hopper and rotates in the hopper, the bottom of the hopper is provided with a sand outlet, and the sand outlet is arranged above the uniform assembly and communicates with the uniform assembly.

[0006] The sand outlet and the uniform assembly are communicated through a pipeline, and the end of the pipeline is provided with a valve.

[0007] The discharging part comprises a rotating screw, the rotating screw is arranged at the sand outlet, one end of the rotating screw faces the uniform assembly, and the rotating screw rotates to drive the quartz sand to fall to the uniform assembly.

[0008] The uniform assembly comprises a driving roller, a driven roller and a belt, the driving roller and the driven roller are arranged on the rack, the belt is wound between the driving roller and the driven roller, and the sanding assembly sends quartz sand to the belt.

[0009] A plurality of longitudinal and transverse intersecting grooves are arranged on the belt, the quartz sand falls into the grooves, the belt is driven to translate by the driving roller, and when the belt is turned over, the quartz sand falling into the grooves falls on the pad.

[0010] The rack is provided with a scraping assembly, the scraping assembly comprises a scraping plate and a linear driving device, the linear driving device is fixed on the rack, the scraping plate is fixed on a driving shaft of the linear driving device, the scraping plate is driven to be attached to the belt by the linear driving device, and the scraping plate is provided with a brush at one end facing the belt.

[0011] The induction assembly comprises an induction probe, one end of the induction probe is fixed on the rack, and the cushion plate sequentially passes below the induction probe and the uniform assembly.

[0012] The brick blank conveying device adopts the technical scheme as follows: a brick blank conveying device is applied to a sanding machine, and comprises a conveying roller, the conveying roller is arranged on the rack and below the uniform assembly, and the cushion plate is placed on the conveying roller and conveyed by the conveying roller to sequentially pass through the induction assembly and the uniform assembly.

[0013] The processing method disclosed in the application adopts the technical scheme as follows: a processing method is applied to a brick blank conveying device, and comprises the following steps:

[0014] The cushion plate conveying step is to sequentially place the cushion plate on the conveying roller, move the cushion plate below the uniform assembly by the conveying roller, and place the edge of the cushion plate below the uniform assembly when the cushion plate passes through the induction assembly, so that the sanding step is performed by the action of the sanding assembly and the uniform assembly;

[0015] The sand supplying step is that when the edge of the cushion plate is placed below the uniform assembly, the quartz sand falls below the uniform assembly, and the quartz sand falls on the belt;

[0016] The sanding step is that the driving roller drives the belt to move, and the conveying roller drives the cushion plate to move, pass below the belt, and the quartz sand on the belt falls on the cushion plate;

[0017] The blank placing step is that the conveying roller continuously drives the cushion plate to move, and after the cushion plate moves to the next station, the brick blank is placed on the cushion plate by the negative pressure device;

[0018] The kiln firing step is that the conveying roller continuously drives the cushion plate with the brick blank to move into the kiln for firing and forming.

[0019] Compared with the prior art, the conveying roller of the present application first needs to drive the cushion plate to pass through the sanding machine to sprinkle a layer of quartz sand on the surface of the cushion plate, and then the cushion plate continues to move under the driving of the conveying roller until it reaches the next station to place the brick blank on the cushion plate, that is, when the brick blank is placed on the cushion plate, there is actually a thin layer of quartz sand between the brick blank and the cushion plate. After the cushion plate is sent into the kiln together with the brick blank for burning and forming, the quartz sand forms an isolation effect between the cushion plate. At this time, the formed brick basically will not be bonded with the cushion plate due to the isolation effect of the quartz sand, that is, the formed brick can be conveniently taken off from the cushion plate, thereby reducing the rate of defective products. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a structural schematic diagram of a brick blank conveying device in the present application;

[0021] Fig. 2 is a structural schematic diagram of a sanding machine;

[0022] Fig. 3 is a schematic diagram of the surface of the belt in the sanding machine;

[0023] In the figure: 1, frame; 2, sanding assembly; 21, hopper; 22, discharging part; 221, valve; 222, pipeline; 223, rotating screw; 3, uniformizing assembly; 31, driving roller; 32, driven roller; 33, belt; 34, groove; 4, induction assembly; 5, conveying roller; 6, flattening assembly; 61, flattening plate; 62, linear drive device; 63, brush; 7, recovery hopper. DETAILED DESCRIPTION

[0024] In the following, the present application will be further described in conjunction with the drawings and specific embodiments. It should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0025] REFERENCE Figs. 1-3 A kind of brick blank conveying device, which is at least composed of frame 1 and conveying roller 5. In the device, conveying roller 5 is installed on frame 1, and cushion plate can be placed on conveying roller 5 and moved forward by conveying roller 5. Conveying roller 5 can be driven by conventional chain and sprocket. Conveying roller 5 first needs to drive the cushion plate to pass through the sanding machine to sprinkle a layer of quartz sand on the surface of the cushion plate, and then the cushion plate continues to move under the driving of conveying roller 5 until it reaches the next station to place the brick blank on the cushion plate, that is, when the brick blank is placed on the cushion plate, there is actually a thin layer of quartz sand between the brick blank and the cushion plate. After the cushion plate is sent into the kiln together with the brick blank for burning and forming, the quartz sand forms an isolation effect between the cushion plate. At this time, the formed brick basically will not be bonded with the cushion plate due to the isolation effect of the quartz sand, that is, the formed brick can be conveniently taken off from the cushion plate, thereby reducing the rate of defective products.

[0026] The sanding machine used in the brick conveying device shares a frame 1 with the brick conveying device, and comprises a sanding assembly 2, a uniform assembly 3 and a sensing assembly 4. The sanding assembly, the uniform assembly 3 and the sensing assembly 4 are all installed on the frame 1. The uniform assembly 3 is arranged below the sanding assembly 2, the sanding assembly 2 delivers quartz sand to the uniform assembly 3, and the uniform assembly 3 is arranged directly above the conveying roller 5. When the pallet passes below the uniform assembly 3, the uniform assembly 3 sands quartz sand onto the surface of the brick, so as to form a layer of quartz sand on the surface of the pallet.

[0027] Specifically, the sanding assembly 2 comprises a hopper 21 and a discharging part 22, the discharging part 22 is arranged in the hopper 21 and rotates in the hopper 21, the bottom of the hopper 21 is provided with a sand outlet, and the sand outlet is arranged above the uniform assembly 3 and communicates with the uniform assembly 3. The discharging part 22 comprises a pipeline 222 which communicates between the sand outlet and the uniform assembly 3, and the end of the pipeline 222 is provided with a valve 221. During use, the end of the pipeline 222 is always attached to the surface of the uniform assembly 3, so as to ensure that the quartz sand can be accurately delivered to the uniform assembly 3. The discharging part 22 comprises a rotating screw 223, which can be installed at the discharging outlet or in the pipeline 222 above the valve 221. 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 to the uniform assembly 3. The rotating screw 223 is used to control the amount and speed of the quartz sand discharged by the effect of spiral conveying, so as to make the quartz sand more uniform, reduce the accumulation of the quartz sand on the uniform assembly 3, and make the distribution of the quartz sand on the surface of the pallet more balanced when the uniform assembly 3 operates.

[0028] Specifically, the uniform assembly 3 comprises a driving roller 31, a driven roller 32 and a belt 33, the driving roller 31 and the driven roller 32 are arranged on the frame 1, the belt 33 is arranged between the driving roller 31 and the driven roller 32, the driving roller 31 and the driven roller 32 can tension the belt 33, and then drive the belt 33 to rotate through the rotation of the driving roller 31 and the driven roller 32. The end of the pipeline 222 is directly above the belt 33 and only has a small gap between the belt 33, so as to greatly reduce the phenomenon of random falling of the quartz sand, so that the quartz sand can fall on the surface of the belt 33 as much as possible, and the waste of the quartz sand is reduced.

[0029] On the basis of the above scheme, a plurality of longitudinal and transverse intersecting grooves 34 can be provided on the belt 33, i.e. the surface of the belt 33 forms a grid-shaped pattern, and the quartz sand finally falls into the grooves 34, and the belt 33 is driven to translate by the driving roller 31. When the belt 33 is turned over, the quartz sand falling into the grooves 34 falls on the base plate. Correspondingly, the scraping assembly 6 is provided on the rack 1, the scraping assembly 6 includes a scraping plate 61 and a linear drive device 62, the linear drive device 62 is fixed on the rack 1, the scraping plate 61 is fixed on the driving shaft of the linear drive device 62, the scraping plate 61 is driven to be attached to the belt 33 by the linear drive device 62, and the end of the scraping plate 61 facing the belt 33 is provided with a brush 63. On the one hand, the brush 63 pushes the piled-up 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, thereby controlling the amount of quartz sand. A recycling device needs to be fixed below the conveying roller 5, and when the quartz sand falls from the belt 33, the excess quartz sand will fall through the conveying roller 5 and fall into the recycling device, thereby reducing the waste of quartz sand.

[0030] The recycling device can be a recycling hopper 7 fixed on the rack 1, the recycling hopper 7 is integrally arranged below the conveying roller 5, the upper opening of the recycling hopper 7 covers the entire conveying roller 5, and the quartz sand falling through the gap of the conveying roller 5 directly falls into the recycling hopper 7. The inner wall of the recycling hopper 7 is inclined so that the quartz sand is gathered to the lowest point of the recycling hopper 7. The bottom of the recycling hopper 7 is provided with a lower opening, and the lower opening is located at the lowest point of the recycling hopper 7. The quartz sand gathered in the recycling hopper 7 can be recycled from the lower opening. Specifically, the lower opening can be connected to a recycling pipe, the recycling pipe extends obliquely to one side of the rack 1 and is in communication with a recycling box or a recycling barrel placed on one side of the rack 1, thereby recycling the quartz sand and reducing the waste of the quartz sand.

[0031] The motors for driving the conveying roller 5, the driving roller 31 and the rotating screw 223 respectively and the valve 221 can be automatically controlled. Specifically, the sensing assembly 4 is fixed on the rack 1. The sensing assembly 4 includes an infrared probe, one end of the infrared probe is fixed on the rack 1, and the base plate passes below the sensing probe and the uniform assembly 3 in turn. A controller is also needed to match the infrared probe, and the controller is preferably an industrial computer or a PLC, which has good expansibility. The infrared probe can be used, and the infrared probe, several motors respectively driving different components and the valve 221 are respectively signal-connected to the controller to realize coordinated action and automatic control, thereby reducing the working intensity and improving the working efficiency.

[0032] The specific method for applying the above green brick conveying device to convey green bricks into a kiln for firing is shown in the following steps:

[0033] In the pad conveying step, the pads are placed on the conveying roller 5 in sequence and moved below the uniform component 3 by the conveying roller 5 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 the belt 33 also moves, which is to execute the sand supply step.

[0034] In the sand supply step, when the edge of the pad is placed below the uniform component 3, the screw 223 is rotated to push the quartz sand down to the uniform component 3, and the quartz sand falls onto the belt 33.

[0035] In the sand spreading step, the drive roller 31 drives the belt 33 to move, and at the same time the conveyor roller 5 drives the pad to move. As the belt 33 passes under the belt, the quartz sand on the belt 33 falls onto the pad.

[0036] In the brick blank placement step, the conveyor roller 5 drives the pad plate to move continuously. After moving to the next station, the brick blank is clamped and placed on the pad plate.

[0037] In the kiln firing process, the conveyor roller 5 drives the pad plate to move continuously, bringing the brick blanks into the kiln for firing and shaping.

[0038] Compared to existing technologies, the conveyor roller 5 of this invention first drives the pad plate through a sand spreader to spread a layer of quartz sand on the surface of the pad plate. Then, the pad plate continues to move under the drive of the conveyor roller 5 until it reaches the next station where the brick blank is placed on the pad plate. That is, when the brick blank is placed on the pad plate, there is actually a thin layer of quartz sand between the brick blank and the pad plate. After the pad plate and the brick blank are sent into the kiln for firing and forming, the quartz sand forms an isolation effect between the brick blank and the pad plate. At this time, due to the isolation effect of the quartz sand, the formed brick will not stick to the pad plate, so the formed brick can be easily removed from the pad plate, thereby reducing the defect rate.

[0039] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A sand spreader characterized by: The sanding machine comprises a sanding assembly, a uniform assembly and an induction assembly arranged on a rack, the uniform assembly is arranged below the sanding assembly, the sanding assembly delivers quartz sand to the uniform assembly, and the uniform assembly delivers quartz sand to the surface of the cushion plate when the cushion plate passes below the uniform assembly; The sanding assembly comprises a hopper and a discharging part, the discharging part is arranged in the hopper and rotates in the hopper, the bottom of the hopper is provided with a sand outlet, and the sand outlet is arranged above the uniform assembly and communicates with the uniform assembly; The sand outlet and the uniform assembly are communicated through a pipeline, and the end of the pipeline is provided with a valve; The discharging part comprises a rotating screw, one end of the rotating screw is directed to the uniform assembly, and the rotating screw rotates to drive the quartz sand to fall to the uniform assembly; The uniform assembly comprises a driving roller, a driven roller and a belt, the driving roller and the driven roller are arranged on the rack, the belt is arranged between the driving roller and the driven roller, and the sanding assembly delivers quartz sand to the surface of the belt; The belt is provided with a plurality of longitudinal and transverse intersecting grooves, the quartz sand falls into the grooves, and the belt is driven to translate by the driving roller, and the quartz sand falling into the grooves falls on the cushion plate when the belt is turned over; The rack is provided with a scraping assembly, the scraping assembly comprises a scraping plate and a linear driving device, the linear driving device is fixed on the rack, the scraping plate is fixed on the driving shaft of the linear driving device, the scraping plate is driven to be attached to the belt by the linear driving device, and one end of the scraping plate directed to the belt is provided with a brush.

2. A spreader as claimed in claim 1, characterised in that: The induction assembly comprises an induction probe, one end of the induction probe is fixed on the rack, and the cushion plate sequentially passes below the induction probe and the uniform assembly.

3. A green brick conveying device, characterized by: The sanding machine of any one of claims 1-2 comprises a conveying roller, the conveying roller is arranged on the rack and below the uniform assembly, and the cushion plate is placed on the conveying roller and is conveyed by the conveying roller to sequentially pass below the induction assembly and the uniform assembly.

4. A method of processing characterized by: The brick conveying device of claim 3 is implemented, and the method comprises the following steps: A cushion plate conveying step, the cushion plate is sequentially placed on the conveying roller and is moved below the uniform assembly by the conveying roller, the edge of the cushion plate is placed below the uniform assembly when the cushion plate passes below the induction assembly, at this time, the sanding assembly and the uniform assembly are actuated to perform a sanding step; A sand supplying step, when the edge of the cushion plate is placed below the uniform assembly, the quartz sand falls to the uniform assembly, and the quartz sand falls on the belt; A sanding step, the driving roller drives the belt to move, and the conveying roller drives the cushion plate to move below the belt, and the quartz sand on the belt falls on the cushion plate; A brick placing step, the conveying roller continuously drives the cushion plate to move, and the brick is placed on the cushion plate after the cushion plate is moved to the next station and is sucked by the negative pressure device; An in-kiln firing step, the conveying roller continuously drives the cushion plate with the brick to move into the kiln for firing.

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