CN110202680B - Preparation method of whole body green brick and polished brick prepared by using method - Google Patents
Preparation method of whole body green brick and polished brick prepared by using method Download PDFInfo
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- CN110202680B CN110202680B CN201910522076.3A CN201910522076A CN110202680B CN 110202680 B CN110202680 B CN 110202680B CN 201910522076 A CN201910522076 A CN 201910522076A CN 110202680 B CN110202680 B CN 110202680B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/022—Feeding several successive layers, optionally of different materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/08—Flooring or floor layers composed of a number of similar elements only of stone or stone-like material, e.g. ceramics, concrete; of glass or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass
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Abstract
The invention discloses a preparation method of a whole-body green brick and a polished brick prepared by using the same, wherein the preparation method comprises the following steps: A. preparing green body powder; B. the blanking control device independently controls the opening of the plurality of blanking holes according to a set program, and drives the blank powder in the step A to be blanked through a blanking roller or a blanking belt, so that the blank powder is blanked from different blanking holes at an initial speed, and a texture material layer with controllable area and controllable line thickness is formed on the auxiliary belt; C. transferring the texture material layer in the step B to a main belt to form a brick blank layer; D. and D, transferring the green brick layer obtained in the step C into a green brick device, and pressing to form a green brick. The cloth of different textures can be realized according to the design pattern, the diversified production requirement is satisfied, smooth unloading of powder is guaranteed simultaneously, the texture pattern distortion degree on the surface of the whole brick blank formed by pressing is large, the pattern is incomplete, and the appearance of bottom penetration and ash penetration phenomena between texture material layers of the whole brick blank is avoided.
Description
Technical Field
The invention relates to the technical field of building ceramics, in particular to a preparation method of a whole body green brick and a polished brick prepared by the method.
Background
Along with the improvement of aesthetic level of people, the requirement on the decoration effect of the ceramic tile is continuously improved, and the more abundant and competitive brick surface decoration patterns of the ceramic tile are, the more certain position can be occupied in the market. In the current production means of the brick surface decorative patterns of the ceramic bricks, the ceramic brick blanks with random textures are produced by adopting the cloth modes of screen cloth, grid cloth, a carving roller, a carving belt and the like, so that the ceramic brick blanks after the cloth is finished form certain textures.
In the existing material distribution mode, no matter a screen plate, a grid, a carving roller or a carving belt, the ceramic green brick distributed by one of the screen plate, the grid, the carving roller or the carving belt only has one type of pattern or design, once powder is distributed, the size of a texture area cannot be changed, the thickness of lines inside the texture cannot be controlled, and the thickness of the distributed whole green brick cannot be changed at will. When ceramic green bricks with other patterns or designs need to be applied, the screen printing plate, the grating, the carving roller or the carving belt with other patterns or designs needs to be replaced, the production replacement is troublesome, the production replacement speed of the ceramic green bricks is greatly reduced, and the production cost is increased. And when the area size and the line thickness of the texture of the ceramic tile and the thickness of the green ceramic tile are required to be changed according to requirements, the production loss is caused by both the modification period and the debugging cost, and the production progress is slowed down while the development efficiency of the product is reduced.
At present, the ceramic green bricks with random textures are produced in the market in a pixel distribution mode, wherein pixel distribution specifically means that a plurality of blanking pipes are arranged on a blanking device, each blanking pipe is provided with a corresponding blanking hole, and the discharging of each blanking hole is controlled by different blanking hole control devices, so that different patterns or patterns can be applied according to requirements in the distribution process. In general, the material distribution mode generally utilizes the self weight of powder in the blanking device to carry out blanking, and the blanking speed is low; if the powder to be distributed in the blanking device is powder with poor fluidity or large moisture content, such as micropowder or submicron powder, the powder is easy to block at a blanking hole, the powder cannot be normally blanked or the blanking amount is insufficient, finally, the distortion degree of texture patterns on the surface of the press-formed whole brick blank is large, the patterns are incomplete, and the phenomena of bottom penetration and ash penetration among texture material layers of the whole brick blank are easy to occur.
Disclosure of Invention
The invention aims to provide a preparation method of a full-body green brick, which can realize distribution of different textures according to design patterns, meet various production requirements, ensure smooth powder blanking, and avoid the phenomena of large distortion degree of the texture patterns and incomplete patterns on the surface of the full-body green brick formed by pressing, bottom penetration and ash penetration among texture material layers of the full-body green brick so as to overcome the defects in the prior art.
The invention also aims to provide the polished brick prepared by the preparation method of the whole body green brick, which has the advantages of rapid texture change, high controllability, complete correspondence of textures among texture layers, high fineness and no bottom penetration and ash penetration.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a whole-body green brick comprises the following steps:
A. preparing green body powder;
B. the blanking control device independently controls the opening of the plurality of blanking holes according to a set program, and drives the blank powder in the step A to be blanked through a blanking roller or a blanking belt, so that the blank powder is blanked from different blanking holes at an initial speed, and a texture material layer with controllable area and controllable line thickness is formed on the auxiliary belt;
C. transferring the texture material layer in the step B to a main belt to form a brick blank layer;
D. and D, transferring the green brick layer obtained in the step C into a green brick device, and pressing to form a green brick.
Preferably, the step B is at least divided into a fabric layer distribution process and a base material layer distribution process, the fabric layer distribution process is a process in which the opening degree of a plurality of blanking holes is independently controlled by the blanking control device according to a set program, the fabric in the micro powder or sub-micro powder state is blanked from the blanking holes, and the texture fabric layer is distributed on the auxiliary belt, the base material layer distribution process is a process in which the opening degree of the plurality of blanking holes is independently controlled by the blanking control device according to the set program, the base material in the spray particle state is blanked from the blanking holes, and the texture base material layer is distributed on the auxiliary belt;
and step C, superposing the texture material layers obtained in the step B.
Preferably, in step C, the texture fabric layer on the secondary belt is transferred to the primary belt first, and the texture primer layer on the secondary belt is transferred to the texture fabric layer on the primary belt for superposition.
Preferably, step B comprises the following steps:
b1, controlling the opening of a blanking hole for distributing the texture of the large area by a blanking control device according to a set program, blanking the blank powder in the blanking hole for controlling the texture of the large area, and distributing the texture of the large area on a secondary belt;
b2, controlling the opening of a discharging hole for applying the line texture by a discharging control device according to a set program, discharging the blank powder in the discharging hole for controlling applying the line texture, and applying the line texture on the auxiliary belt;
wherein, the step B1 and the step B2 can be repeated for multiple times to form multi-region textures respectively, and then the step C is carried out.
Preferably, in the step B2, the blanking control device controls the opening of the blanking hole for applying the line texture according to a set program, the green body powder is blanked in the blanking hole for controlling applying the line texture, and the line texture is applied on the secondary belt after the green body powder is vibrated by the vibrating screen arranged below the blanking hole.
Preferably, the speed of the auxiliary belt is greater than that of the main belt, and the speed of the auxiliary belt is 1-5 times that of the main belt.
Preferably, step D is preceded by a pre-pressing step of pre-pressing the grain material layer on the main belt.
Preferably, the step D further includes a leveling process of leveling the grain material layer after the transfer into the pressing device.
Preferably, the green brick obtained in the step D is subjected to green brick brushing, drying, then is placed into a kiln for firing, and then is subjected to polishing treatment, wherein the polishing treatment is any one of full polishing, half polishing or soft polishing.
A polished brick prepared by the preparation method of the whole body green brick.
The invention has the beneficial effects that: the method can quickly and controllably realize the distribution of different textures according to the difference of design patterns, can meet the production requirement of product pattern diversification by using the same distribution equipment, is suitable for smooth feeding of powder with different granularity, different moisture and fluidity, and avoids the conditions of large distortion degree of texture patterns and incomplete patterns on the surface of the press-formed through body green brick, discontinuous and inconsistent textures between texture material layers of the through body green brick, and the occurrence of bottom penetration and ash penetration phenomena.
Drawings
The drawings are further illustrative of the invention and the content of the drawings does not constitute any limitation of the invention.
FIG. 1 is a cross-sectional view of a powder distribution structure in one embodiment of the invention.
FIG. 2 is a cross-sectional view of a powder distribution structure in another embodiment of the invention.
Wherein: a distributing hopper 10; a blanking hole 101; a first side wall 11; a second side wall 12; a blanking device 13; a drive assembly 131; a shutter 132; a blanking drum 201; blanking belt 202.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
A preparation method of a whole-body green brick comprises the following steps:
A. preparing green body powder;
B. the blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the blank powder in the step A to be blanked through the blanking roller 201 or the blanking belt 202, so that the blank powder is blanked from different blanking holes 101 at an initial speed, and a texture material layer with controllable area and controllable line thickness is formed on the auxiliary belt;
C. transferring the texture material layer in the step B to a main belt to form a brick blank layer;
D. and D, transferring the green brick layer obtained in the step C into a green brick device, and pressing to form a green brick.
The pixel cloth specifically means that a plurality of blanking pipes are arranged on the blanking device, each blanking pipe is provided with a corresponding blanking hole 101, and the control device of different blanking holes 101 controls the discharging of each blanking hole 101, so that different patterns or patterns can be applied according to requirements in the cloth process. In general, the material distribution mode generally utilizes the self weight of powder in the blanking device to carry out blanking, and the blanking speed is low; if the powder to be distributed in the blanking device is powder with poor fluidity or large moisture content, such as micropowder or submicron powder, the powder is easily blocked at the blanking hole 101, the powder cannot be normally blanked or the blanking amount is insufficient, and finally the distortion degree of the texture pattern on the surface of the press-formed whole brick blank is large, the pattern is incomplete, and the phenomena of bottom penetration and ash penetration between texture material layers of the whole brick blank are easy to occur.
In order to solve the problems, the technical scheme of the invention provides a preparation method of a whole body green brick, which comprises the following steps:
in step B, a blanking control device (not shown) independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the blank powder to be blanked through a blanking roller 201 or a blanking belt 202, so that the blank powder is blanked from different blanking holes 101 at an initial speed, and a texture material layer with controllable area and controllable thickness of lines is formed on the secondary belt.
Specifically, the opening degree of a plurality of unloading hole 101 of unloading controlling means according to setting for the procedure independent control, can execute different decorative pattern or pattern according to the demand at the cloth in-process, satisfy the basic requirement of pixel cloth, in the actual operation, only need turn into the coded information with the design pattern, the opening degree of unloading hole 101 of difference through unloading controlling means control, just can form regional area controllable, the controllable texture of thickness or pattern on the cloth region of sub-belt, make the cloth of the whole body adobe that has the pattern texture have clear directionality, different textures only need set for different codes, just can realize the seamless connection of the ceramic adobe production of different textures on the same production line, the preparation technology is nimble, the efficiency of the transformation of production has been promoted. The aperture of control unloading hole 101 can also improve the abundance of ceramic adobe brick face pattern, and the difference of aperture makes the unloading volume of powder different in the unloading hole 101, and the thickness of powder ejection of compact is also different, through the powder ejection of compact of controlling different thickness, can be used for richening the texture pattern on the adobe vertical direction, also can be the cloth that is used for local thin line for the position of thin line has accurate controllability.
Further, in the step, the blank powder is driven to be discharged through the discharging roller 201 or the discharging belt 202, even if the powder is powder with poor fluidity or large moisture content, the powder can be discharged from the discharging hole 101 under the driving of the discharging roller 201 or the discharging belt 202 with a certain rotating speed, the possibility of powder blockage at the discharging hole 101 is avoided, the smooth discharging of the powder with poor fluidity or large moisture content and the like is ensured, and the problems of large distortion degree of texture patterns on the surface of the through brick blank after the material distribution, incomplete patterns, bottom penetration and ash penetration among texture material layers of the through brick blank easily caused by the abnormal discharging or insufficient discharging amount of the powder are avoided;
in the step C, a material distribution process combining a main belt and an auxiliary belt is adopted, powder is distributed on the auxiliary belt and is transferred through the main belt, specifically, the speed of distributing the powder is relatively slow, so that the speed of the main belt can be set to be higher than that of the auxiliary belt, the powder is distributed on the slow auxiliary belt and is rapidly transferred through the main belt, the smoothness of the material distribution process is favorably improved, and the production efficiency of ceramic green bricks is improved.
Preferably, step B can be achieved by, but is not limited to, the following powder distribution structure.
In one embodiment of the present invention, as shown in fig. 1, the powder distributing structure includes a distributing hopper 10 and a discharging roller 201, wherein the discharging roller 201 is disposed below the distributing hopper 10;
the material distribution hopper 10 comprises a first side wall 11 and a second side wall 12, a feed opening is reserved between the first side wall 11 and the circumferential surface of the blanking roller 201, the blanking roller 201 rotates along the direction of the feed opening, a blanking device 13 is arranged outside the feed opening, and the second side wall 12 is abutted against the edge of the blanking roller 201;
In the powder distributing structure in the above embodiment, the discharging roller 201 rotates along the direction of the discharging opening, and the powder in the distributing hopper 10 is passively discharged from the discharging hole 101 under the rotation of the discharging roller 201, so that the powder has a certain initial speed along the tangential direction of the discharging roller 201 during discharging, and the discharging speed of the powder can be increased by combining the gravity of the powder distributing structure and the distributing efficiency can be improved; and because the powder is driven by the discharging roller 201 to be discharged, even if the powder in the distributing hopper 10 is the powder with poor fluidity or large moisture content, the powder can be discharged from the discharging hole 101 under the driving of the discharging roller 201 with certain rotating speed, so that the possibility of powder blockage at the discharging hole 101 is avoided.
In another embodiment of the present invention, as shown in fig. 2, the powder distribution structure comprises a distribution hopper 10 and a feeding belt 202, wherein the feeding belt 202 is arranged below the distribution hopper 10;
the material distribution hopper 10 comprises a first side wall 11 and a second side wall 12, a feed opening is reserved between the first side wall 11 and the upper surface of the feeding belt 202, the feeding belt 202 rotates along the direction of the feed opening, a feeding device 13 is arranged on the outer side of the feed opening, and the second side wall 12 is abutted against the upper surface of the feeding belt 202;
In the powder distributing structure in the above embodiment, the discharging belt 202 rotates along the direction of the discharging opening, and the powder in the distributing hopper 10 is passively discharged from the discharging opening 101 under the rotation of the discharging belt 202, even if the powder in the distributing hopper 1 is the powder with poor fluidity or large moisture content, the powder can be discharged from the discharging opening 101 under the driving of the discharging belt 202 with a certain rotation speed, so that the possibility of powder blockage at the discharging opening 101 is avoided, and the powder with poor fluidity or large moisture content can be ensured to be normally discharged.
Further, the step B is at least divided into a fabric layer distributing step and a primer layer distributing step, the fabric layer distributing step is that the opening degree of the plurality of blanking holes 101 is independently controlled by the blanking control device according to a set program, the fabric is blanked from the blanking holes 101, and the texture fabric layer is distributed on the sub-belt, the primer layer distributing step is that the opening degree of the plurality of blanking holes 101 is independently controlled by the blanking control device according to the set program, the primer is blanked from the blanking holes 101, and the texture primer layer is distributed on the sub-belt;
and step C, superposing the texture material layers obtained in the step B.
Step B is at least divided into a fabric layer distribution process and a primer layer distribution process, wherein the texture material layer in the step B is superposed on the main belt to form a green brick layer with a certain thickness and then the step D is carried out, the auxiliary belt is used for distributing powder, and after the powder is discharged through the powder discharging hole 101, the powder is distributed on the auxiliary belt to form the texture of the whole green brick; the main belt is used for stacking the material layers.
Further, the technical problem that powder cannot be smoothly discharged is solved in the material distribution process, so that the material distribution process disclosed by the invention can be suitable for distributing the bottom material with good fluidity and can also be suitable for the fabric of the fabric with poor fluidity, the discharge control device can simultaneously control the discharge of the fabric and the bottom material, the control process is simplified, accurate correspondence can be realized between material layers after material distribution, and the pattern fineness of the whole brick blank is improved. And step B is at least divided into a fabric layer distribution process and a primer layer distribution process. Specifically, the texture material layer obtained in the step B is superposed in the step C, and the material layer superposition can be the superposition of a surface material layer and a bottom material layer, so that the cost is reduced while the texture of the whole brick blank is ensured; and the backing material layers can be stacked in multiple layers behind the fabric layer, so that the problem that the backing material layer with better fluidity is too thick in cloth, the edges of the backing material layers form slopes, and the green brick forming effect is poor is solved. The material layer after the material distribution is transferred to the main belt from the auxiliary belt, and the material layer is superposed on the main belt to form a whole brick blank with ideal thickness, so that the thickness of the whole brick blank is controllable, the production applicability of the material distribution process is improved, and the pattern texture is kept unchanged.
Preferably, the fabric is ground micro powder or submicron powder, the water content of the fabric is controlled to be 6.0-7.5%, the particle size of the fabric is controlled to be less than 0-5% of 40-mesh sieve residue, 30-50% of 60-mesh sieve residue and 80-92% of 100-mesh sieve residue, and the sieve residue of each mesh number is an accumulated value. The ground micro powder or submicron powder is adopted in the fabric, the particles are small, and the cloth definition is improved.
Preferably, the bottom material is a spray particle material, the moisture content of the spray particle material is controlled to be 6.0-7.5%, the particle size of the spray particle material is controlled to be less than 30-50% of 40-mesh screen residue, 60-90% of 60-mesh screen residue and 90-100% of 100-mesh screen residue, and the screen residue of each mesh number is an accumulated value. The bottom material particles are large, the blanking speed is high, the fluidity is good, the bottom material of the sprayed particle powder is favorable for exhausting, and the green brick is convenient to press.
Preferably, the thickness of the texture material layer for stacking is 1-5 mm, the texture material layer within the thickness range is thin, the edge of the material layer is not prone to collapse during forming, the texture pattern effect is affected, and when the texture material layer with a certain thickness is stacked, the thickness controllability of the brick blank layer is high. Wherein, the thickness of texture bed of material is preferred 2 ~ 3 mm.
Further explaining, in the step C, the texture fabric layer on the auxiliary belt is firstly transferred to the main belt, and the texture primer layer on the auxiliary belt is then transferred to the texture fabric layer on the main belt for superposition.
And step C, a reverse beating procedure in the ceramic tile material distribution technology is adopted, namely a material distribution procedure of firstly distributing the material and then distributing the backing material, specifically, a texture fabric layer on the auxiliary belt is firstly transferred onto the main belt, and a texture backing material layer on the auxiliary belt is then transferred onto the texture fabric layer on the main belt.
Preferably, the thickness of the primer layer is 2-3 times of that of the fabric layer, and the weight of the primer layer can bring a good prepressing effect to the fabric layer.
Further, step B includes the following steps:
b1, controlling the opening of the blanking hole 101 for distributing the large-area texture by the blanking control device according to a set program, blanking the blank powder in the blanking hole 101 for controlling the large-area texture, and distributing the large-area texture on the secondary belt;
b2, controlling the opening of the blanking hole 101 for applying the line texture by a blanking control device according to a set program, blanking the green body powder in the blanking hole 101 for controlling the line texture, and applying the line texture on the secondary belt;
wherein, the step B1 and the step B2 can be repeated for multiple times to form multi-region textures respectively, and then the step C is carried out.
The step B comprises the following steps:
b1, controlling the opening of the blanking hole 101 for distributing the large-area texture by the blanking control device according to a set program, blanking the blank powder in the blanking hole 101 for controlling the large-area texture, and distributing the large-area texture on the secondary belt; b2, controlling the opening of the blanking hole 101 for applying the line texture by a blanking control device according to a set program, blanking the green body powder in the blanking hole 101 for controlling the line texture, and applying the line texture on the secondary belt; when the texture is distributed, large-area textures are firstly distributed, the blanking control device controls the opening of the blanking hole 101 to be large, the blanking amount of powder is large, and the edge of the powder can form a tiny slope due to certain fluidity of the powder; the line texture is applied later, because the large-area texture has a slope, when powder material of the line texture is applied to blanking, the line texture can be attached to the slope to cause line texture in the vertical direction of the material layer, the section area of the line close to one end of the blanking hole 101 in the vertical direction is larger, namely, the line texture is represented as a thick line, the section area of the line far away from one end of the blanking hole 101 in the vertical direction is smaller, namely, the line texture is represented as a thin line, the finer line texture can be achieved by utilizing the material distribution sequence, and the definition of the texture pattern is improved.
Preferably, step B1 and step B2 are repeated a plurality of times before entering step C. Powder with different characteristics or colors can be distributed through the step B1 and the step B2, so that textures in different areas can be formed, and the texture richness is further improved.
Specifically, in the step B2, the blanking control device controls the opening of the blanking hole 101 for applying the line texture according to the set program, and the green body powder is blanked in the blanking hole 101 for controlling applying the line texture, and after vibrating through the vibrating screen arranged below the blanking hole 101, the line texture is applied on the secondary belt.
In the step B2, the green body powder can be vibrated by the vibrating screen arranged below the blanking hole 101, and then line textures are distributed on the auxiliary belt, when the powder is blanked, the fine slope surface formed after the large-area texture distribution on the auxiliary belt is uniformly distributed in a thin manner after the vibration of the vibrating screen is dispersed, and lines which are finer than those formed in the blanking process of a single blanking hole 101 can be formed, so that the fineness of the surface patterns of the whole brick blank is further increased, and the line definition is improved. Specifically, the mesh number of the vibrating screen is preferably 10-20 meshes.
Further, the speed of the auxiliary belt is greater than that of the main belt, and the speed of the auxiliary belt is 1-5 times that of the main belt.
Because the speed difference exists between the auxiliary belt and the main belt and the speed of the auxiliary belt is higher than that of the main belt, the powder after being distributed can shrink in the process of converting from the auxiliary belt to the main belt, and the powder is extruded and accumulated, so that the patterns in the material layer are contracted, on one hand, the thickness of the material layer is increased to achieve the purpose of controlling the thickness of the whole green brick, on the other hand, the thickness of the whole green brick is more prominently expressed as the line change on the surface of the whole green brick, specifically, because the difference of the opening setting can present the condition of material layer thickness difference on the secondary belt when the blanking hole 101 runs, this difference is greater in the degree of shrinkage of the region having a smaller thickness (region having a smaller opening degree) than the region having a larger thickness (region having a larger opening degree) due to the transfer operation of the primary and secondary belts, and the line thickness of the whole green brick can be controlled by this characteristic. Therefore, the degree of fineness of the pattern of the whole green brick can be further improved by the speed difference between the main and sub belts.
The speed of the auxiliary belt is 1-5 times of that of the main belt. If the speed of the auxiliary belt is too high, the contraction degree of patterns is large, and lines are incomplete; the speed of the auxiliary belt is too low, a gap is easily formed in a material layer, the compactness is insufficient, the phenomena of bottom penetration and ash penetration are easily caused in the whole brick after the material distribution, the contraction degree of the texture is small, and the fineness is insufficient. When powder applied to the auxiliary belt is used as a base material, the speed of the auxiliary belt is preferably 2-3 times that of the main belt; when the powder applied to the auxiliary belt is the fabric, the speed of the auxiliary belt is preferably 1-2 times that of the main belt.
Further explaining, the step D also comprises a prepressing procedure before, and the prepressing procedure is carried out on the texture material layer on the main belt.
And D, a pre-pressing process is further included before the step D, the texture material layer on the main belt is pre-pressed, so that the texture material layer has certain compactness, the texture of the material layer is not easy to scatter and deform in the transferring process, and the completeness of the texture is guaranteed.
Further, the step D includes a leveling step of leveling the grain material layer after the grain material layer is transferred into the green compact device.
Because the unloading hole 101 moves, the difference that the aperture set up can present the inhomogeneous condition of discharging layer thickness on the auxiliary belt, the difference of bed of material thickness can be through the mobility of powder self on the one hand, the transfer between the main and auxiliary belt obtains the compensation, on the other hand in step D, strickle off the processing to the texture bed of material after transferring to the compact device inside, can guarantee the planarization on adobe surface, the adobe surface receives the pressure of compact device uniformly, make the inside compactness of full-body adobe even, be favorable to increasing the bulk strength of full-body brick.
And further explaining, brushing the green brick obtained in the step D, drying, then firing in a kiln, and then polishing, wherein the polishing is any one of full polishing, half polishing or soft polishing.
A polished brick prepared by the preparation method of the whole body green brick.
Example 1-a method of making a single facer layer full body tile, comprising the steps of:
A. preparing green body powder; the blank powder is a fabric, the fabric is ground micro powder or submicron powder, the water content of the fabric is controlled to be 6.0-7.5%, the particle size of the fabric is controlled to be less than 0-5% of the residue of a 40-mesh sieve, 30-50% of the residue of a 60-mesh sieve and 80-92% of the residue of a 100-mesh sieve, and the residue of each mesh is an accumulated value.
B. The blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the fabric blanking in the step A through the blanking roller 201, so that the fabric is blanked from different blanking holes 101 at an initial speed, and a texture fabric layer is formed on the auxiliary belt;
C. transferring the texture fabric layer in the step B to a main belt to form a whole brick blank layer with a single fabric layer; wherein the speed of the secondary belt is 2 times the speed of the primary belt.
D. And C, transferring the whole body green brick layer of the single-face material layer in the step C into a green pressing device, pressing to form a whole body green brick 1, brushing the green brick, drying, and then putting into a kiln for firing.
The whole body green brick 1 prepared by the preparation method is observed to have complete texture surface patterns, clear line textures and the minimum width of surface lines smaller than 1 mm.
Embodiment 2-a method for preparing a full body brick of a double-layer structure, comprising the steps of:
A. preparing green body powder; the blank powder is a plus material and a backing material, the plus material is ground micro powder or submicron powder, the water content is controlled to be 6.0-7.5%, the particle size is controlled to be less than 0-5% of the residue of a 40-mesh sieve, 30-50% of the residue of a 60-mesh sieve and 80-92% of the residue of a 100-mesh sieve, and the residue of each mesh is an accumulated value. The bottom material is a spray particle material, the moisture content of the bottom material is controlled to be 6.0-7.5%, the particle size of the bottom material is controlled to be less than 30-50% of 40-mesh screen residue, 60-90% of 60-mesh screen residue and 90-100% of 100-mesh screen residue, and the screen residue of each mesh is an accumulated value.
Repeating the step B and the step C twice, wherein the cloth fabric for the first time:
B. the blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the fabric blanking in the step A through the blanking belt 202, so that the fabric is blanked from different blanking holes 101 at an initial speed, and a texture fabric layer is formed on the fabric auxiliary belt, wherein the thickness of the texture fabric layer is 2 mm;
C. transferring the texture fabric layer in the step B to a main belt; wherein the speed of the fabric auxiliary belt is 3 times of that of the main belt.
Laying a bottom material for the second time:
B. the blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the backing material blanking in the step A through the blanking belt 202, so that the backing material is blanked from different blanking holes 101 at an initial speed, and a texture backing material layer is formed on the backing material auxiliary belt, wherein the thickness of the texture backing material layer is 3 mm;
C. transferring the texture primer layer to a texture fabric layer firstly transferred to the main belt to form a whole brick blank layer with a double-layer structure; wherein the speed of the auxiliary belt for the base material is 2 times of that of the main belt.
D. And transferring the obtained whole body green brick layer with the double-layer structure into a green pressing device, pressing to form a whole body green brick 2, brushing the green brick, drying, and then firing in a kiln.
The whole body green brick 2 prepared by the preparation method is observed, the texture surface pattern is complete, the bottom penetration and ash penetration phenomena are avoided, the side patterns of the green brick correspond to each other, the texture surface line texture is clearer, and the minimum width of the surface line is smaller than 1 mm.
Example 3-a method for making a full body tile of a multilayer structure comprising the steps of:
A. preparing green body powder; the blank powder is a plus material and a backing material, the plus material is ground micro powder or submicron powder, the water content is controlled to be 6.0-7.5%, the particle size is controlled to be less than 0-5% of the residue of a 40-mesh sieve, 30-50% of the residue of a 60-mesh sieve and 80-92% of the residue of a 100-mesh sieve, and the residue of each mesh is an accumulated value. The bottom material is a spray particle material, the moisture content of the bottom material is controlled to be 6.0-7.5%, the particle size of the bottom material is controlled to be less than 30-50% of 40-mesh screen residue, 60-90% of 60-mesh screen residue and 90-100% of 100-mesh screen residue, and the screen residue of each mesh is an accumulated value.
And B, repeating the step B and the step C for five times, wherein cloth of the interlayer powder for the first time, cloth of the interlayer powder for the second time and cloth of the bottom material for the rest times.
First-time cloth fabric:
B. the blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, the blanking belt 202 drives the fabric in the step A to be blanked, the fabric is blanked from different blanking holes 101 at an initial speed after being vibrated by the vibrating screen arranged below the blanking holes 101, and a texture fabric layer is formed on the fabric secondary belt, wherein the thickness of the texture fabric layer is 2 mm;
C. transferring the texture fabric layer in the step B to a main belt; wherein the speed of the fabric auxiliary belt is 3 times of that of the main belt.
Laying interlayer powder for the second time:
uniformly distributing interlayer powder on the texture fabric layer of the main belt; wherein the powder material is white spray particle material.
Distributing bed charge for three times:
B. the blanking control device independently controls the opening of the plurality of blanking holes 101 according to a set program, and drives the backing material blanking in the step A through the blanking belt 202, so that the backing material is blanked from different blanking holes 101 at an initial speed, and a texture backing material base layer is formed on the backing material auxiliary belt, wherein the thickness of the texture backing material base layer is 1 mm;
C. sequentially transferring the texture base material basic layer of the three-time cloth to an interlayer firstly transferred to the main belt to form a whole brick blank layer with a multi-layer structure; wherein the speed of the auxiliary belt for the base material is 2 times of that of the main belt.
D. And transferring the obtained whole body green brick layer with the multilayer structure into a green pressing device, pressing to form a whole body green brick 3, brushing the green brick, drying, and then firing in a kiln.
Observing the whole body green brick 3 prepared by the preparation method, the texture surface pattern is complete, the bottom penetration and ash penetration phenomenon is avoided, the side patterns of the green brick continuously correspond, the line texture of the texture surface is clear, and the minimum width of the surface line is less than 0.5 mm.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The preparation method of the whole-body green brick is characterized by comprising the following steps of:
A. preparing green body powder;
B. the blanking control device independently controls the opening of the plurality of blanking holes according to a set program, and drives the blank powder in the step A to be blanked through a blanking roller or a blanking belt, so that the blank powder is blanked from different blanking holes at an initial speed, and a texture material layer with controllable area and controllable line thickness is formed on the auxiliary belt;
C. transferring the texture material layer in the step B onto a main belt to form a brick blank layer, wherein the speed of the auxiliary belt is greater than that of the main belt, and the speed of the auxiliary belt is 1-5 times that of the main belt;
D. and D, pre-pressing the texture material layer on the main belt, transferring the green brick layer obtained in the step C into a green pressing device, and pressing to form a green brick.
2. The method for preparing a full body green brick according to claim 1, characterized in that: step B is at least divided into a fabric layer distributing process and a base material layer distributing process, wherein the fabric layer distributing process is a process that a blanking control device independently controls the opening of a plurality of blanking holes according to a set program, fabric is blanked from the blanking holes, and texture fabric layers are distributed on an auxiliary belt, the base material layer distributing process is a process that the blanking control device independently controls the opening of the plurality of blanking holes according to the set program, base materials are blanked from the blanking holes, and texture base material layers are distributed on the auxiliary belt;
and step C, superposing the texture material layers obtained in the step B.
3. The method for preparing a full body green brick according to claim 2, characterized in that: in the step C, the texture fabric layer on the auxiliary belt is firstly transferred to the main belt, and the texture primer layer on the auxiliary belt is then transferred to the texture fabric layer on the main belt for superposition.
4. The method for preparing a full body green brick according to claim 1, characterized in that: the step B comprises the following steps:
b1, controlling the opening of a blanking hole for distributing the texture of the large area by a blanking control device according to a set program, blanking the blank powder in the blanking hole for controlling the texture of the large area, and distributing the texture of the large area on a secondary belt;
b2, controlling the opening of a discharging hole for applying the line texture by a discharging control device according to a set program, discharging the blank powder in the discharging hole for controlling applying the line texture, and applying the line texture on the auxiliary belt;
wherein, the step B1 and the step B2 can be repeated for multiple times to form multi-region textures respectively, and then the step C is carried out.
5. The method for preparing a full body green brick according to claim 4, characterized in that: and step B2, specifically, the blanking control device controls the opening of the blanking hole for applying the line texture according to a set program, the blank powder is blanked in the blanking hole for controlling the line texture, and the line texture is applied on the secondary belt after the vibration of the vibrating screen arranged below the blanking hole.
6. The method for preparing a full body green brick according to claim 1, characterized in that: and step D, a strickling process is further included, and the strickling material layer after being transferred into the green pressing device is strickled.
7. The method for preparing a full body green brick according to claim 1, characterized in that: c, brushing the green brick obtained in the step D, drying, then firing in a kiln, and then polishing, wherein the polishing is any one of full polishing, half polishing or soft polishing.
8. A polished tile produced by the method for producing a full body green tile as claimed in claim 7.
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