CN111571773A - Non-uniform-thickness green brick press forming equipment and method and non-uniform-thickness green brick - Google Patents

Non-uniform-thickness green brick press forming equipment and method and non-uniform-thickness green brick Download PDF

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Publication number
CN111571773A
CN111571773A CN202010362757.0A CN202010362757A CN111571773A CN 111571773 A CN111571773 A CN 111571773A CN 202010362757 A CN202010362757 A CN 202010362757A CN 111571773 A CN111571773 A CN 111571773A
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thickness
lower die
uniform
green brick
die
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叶松君
张德荣
彭钊明
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Foshan Henglitai Machinery Co Ltd
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Foshan Henglitai Machinery Co Ltd
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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding

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  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
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Abstract

The invention discloses non-uniform-thickness green brick pressing and forming equipment, which comprises a die frame, an upper die and a lower die, wherein the lower die and the die frame form a die cavity for containing green brick powder; the lower die comprises a plurality of groups of lower die cores capable of moving independently, and the plurality of groups of lower die cores divide the green brick powder positioned above the lower die cores into a plurality of groups of powder aggregates; the upper die integrally moves, a plurality of groups of lower die cores independently move, and green brick powder is pressed into non-uniform-thickness green bricks through the relative motion of the upper die and the lower die; the compression ratio of different groups of powder aggregates is kept the same in the pressing process and after the pressing is finished. Correspondingly, the invention also discloses a pressing forming method of the non-uniform-thickness green brick and the non-uniform-thickness green brick formed by the method. The forming equipment and the forming method can effectively improve the internal uniformity of the non-uniform-thickness green bricks and improve the strength of the non-uniform-thickness green bricks.

Description

Non-uniform-thickness green brick press forming equipment and method and non-uniform-thickness green brick
Technical Field
The invention relates to a press and the technical field of press forming, in particular to a non-uniform-thickness green brick press forming device and method and a non-uniform-thickness green brick.
Background
The existing green brick forming methods include an extrusion method and a dry pressing method. The extrusion method is to extrude a slurry through a specific die, and can mold various irregular-shaped pieces with uneven thickness, but the production cycle is long and the requirement for raw materials is high. The dry pressing method is to arrange powder into a die cavity and then to form the powder through the combined action of an upper die core and a lower die core, has high efficiency and low requirement on raw materials, and is adopted in large scale in the production of green bricks at present.
Referring to fig. 1 and 2, when the non-uniform-thickness irregular green bricks are produced by a dry pressing method: the powder is firstly arranged in a cavity formed by the lower die core A and the die frame B, and then the powder is pressed downwards by the upper die core C to obtain a green brick. During pressing, the lower mold core a remains stationary or is lifted upward. The existing lower mold core A is an integrally driven (or static) entity, but is provided with a convex part D for forming irregular green bricks; when distributing, the depth of the convex part of the lower die core is H2The rest is H1(ii) a After pressing, the thickness of the convex part of the lower die core corresponding to the green brick is h2The rest is h1(ii) a The compression ratio of the thick part of the green brick1＝H1/h1And the compression ratio of the thinner part of the green brick2＝H2/h2(ii) a It is obvious that1≠2. The uniformity and density of the dry-pressed green bricks have a great relationship with the compression ratio thereof; the compact with poor density and non-uniformity is easy to break and crack in the later firing (curing) process. Especially for some green bricks with larger thickness, the different compression ratios can cause the compactness difference of different areas in the green bricks to be larger, so that the green bricks have small strength, and are easy to break in later processing, thereby influencing the yield. As in the existing refractory brick production process, the yield is about 80 percent more.
Disclosure of Invention
The invention aims to provide the non-uniform-thickness green brick pressing and forming equipment, which can effectively improve the uniformity of the non-uniform-thickness green bricks and improve the strength of the green bricks.
The invention also aims to provide a pressing and forming method of non-uniform-thickness green bricks, which can effectively improve the uniformity of the non-uniform-thickness green bricks and improve the strength of the green bricks.
The invention also aims to solve the technical problem of providing a non-uniform-thickness green brick.
In order to solve the problems, the invention discloses non-uniform-thickness green brick pressing and forming equipment which is characterized by comprising a die frame, an upper die and a lower die, wherein the lower die and the die frame form a die cavity for containing green brick powder; the lower die comprises a plurality of groups of lower die cores capable of moving independently, and the plurality of groups of lower die cores divide the green brick powder positioned above the lower die cores into a plurality of groups of powder aggregates;
the upper die integrally moves, a plurality of groups of lower die cores independently move, and green brick powder is pressed into non-uniform-thickness green bricks through the relative motion of the upper die and the lower die;
the compression ratio of different groups of powder aggregates is kept the same in the pressing process and after the pressing is finished.
Correspondingly, the invention also discloses a non-uniform-thickness green brick pressing and forming method, which comprises the following steps:
distributing the green brick powder in a die cavity formed by a die frame and a lower die according to a preset height;
the lower die comprises a plurality of groups of lower die cores capable of moving independently, and the plurality of groups of lower die cores divide the green brick powder positioned above the lower die cores into a plurality of groups of powder aggregates;
the upper die integrally moves, a plurality of groups of lower die cores independently move, and green brick powder is pressed into non-uniform-thickness green bricks through the relative motion of the upper die and the lower die;
wherein, the compression ratio of the powder aggregates of different groups is kept the same during the pressing process and after the pressing is finished.
As an improvement of the above technical solution, the press forming method includes:
(1) dividing the unequal-thickness green bricks into a plurality of green brick units according to the target thickness of the unequal-thickness green bricks, and recording the thickness h of each green brick uniti(ii) a The lower die is correspondingly divided into a plurality of groups of lower die cores which can move independently according to the adobe units;
(2) determining a compression ratio;
(3) moving the lower mold core corresponding to each green brick unit to an initial position so that the lower mold core and the mold frame enclose to form a mold cavity;
wherein, when the ith group lower die core is positioned at the initial position, the distance H between the bottom of the ith group lower die core and the top of the die frameiComprises the following steps:
Hi＝hi
wherein, is the compression ratio, HiIs the distance between the tops of the bottom die frames h when the i-th group of lower die cores are in the initial positioniIs the thickness of the ith group of green brick units;
(4) the green brick powder is filled into the die cavity, and the green brick powder above the die cavity is divided into a plurality of groups of powder aggregates by the lower die cores;
(5) moving an upper die and a lower die core, and pressing the green brick powder; the pressing process, the displacement of the upper die core and the lower die core is controlled, so that the compression ratio of different groups of powder aggregates is the same after the pressing process and the pressing are finished;
wherein, when the upper die moves down and shifts for x, the i-th group of lower die cores move down and shift for:
Figure BDA0002475657860000031
wherein, yiIs the downward movement of the i-th group of lower mold cores, hmaxIs the maximum thickness of the non-uniform-thickness green brick, hiThe thickness of the ith green brick unit is shown, and x is the downward movement displacement of the upper die.
As an improvement of the above technical solution, in the step (1), the green brick unit has one or more of a triangular, rectangular, circular, pentagonal, hexagonal or octagonal cross section.
As an improvement of the technical scheme, the maximum thickness of the non-uniform-thickness green bricks is 20-2000 mm.
As an improvement of the technical scheme, the non-uniform-thickness brick blank is a ceramic brick blank, a refractory brick blank, an artificial granite blank or an artificial quartz stone blank.
As an improvement of the technical scheme, the lower die comprises 2-50 groups of lower die cores.
As an improvement of the technical scheme, the lower die comprises 2-4 groups of lower die cores.
As an improvement of the technical scheme, in the step (5), the lower die core corresponding to the brick blank unit with the largest thickness does not move.
Correspondingly, the invention also discloses a non-uniform-thickness green brick which is formed by adopting the forming method.
The implementation of the invention has the following beneficial effects:
1. the lower die is arranged into a plurality of groups of lower die cores which can move independently, the lower die cores move independently under the driving of the driving device in the pressing process, and the movement of the lower die cores is not influenced by each other, so that the consistency of compression ratios of different parts of non-uniform-thickness green bricks is effectively ensured, the uniformity of different positions of the green bricks is enhanced, and the strength of the green bricks is improved.
2. The invention relates to a method for molding unequal-thickness green bricks, which divides unequal-thickness green bricks into green brick units with different thicknesses, and correspondingly divides a lower die into a plurality of groups of lower die cores which can move independently according to the green brick units. During molding, the compression ratio of each part of the green brick obtained by molding is the same by controlling the filling depth and the displacement of different lower mold cores and the displacement of an upper mold, so that the uniformity of different positions of the green brick is enhanced, and the strength of the green brick is improved.
Drawings
FIG. 1 is a schematic view of a prior art non-uniform thickness green brick distribution;
FIG. 2 is a schematic view of a prior art after press forming of a non-uniform thickness green brick;
FIG. 3 is a schematic structural view of a non-uniform-thickness green brick press forming device of the invention;
FIG. 4 is a flow chart of a method for press forming a non-uniform thickness green brick of the present invention;
FIG. 5 is a schematic structural view of a non-uniform-thickness green brick in example 1 of the present invention.
FIG. 6 is a schematic view showing a state of distributing a non-uniform-thickness green brick in example 1 of the present invention;
FIG. 7 is a schematic view showing a non-uniform thickness green brick formed in example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below.
As a first aspect of the invention, the invention discloses a non-uniform-thickness green brick pressing forming device, and referring to FIG. 3, the device comprises a mold frame 1, an upper mold 2 and a lower mold 3, the mold frame 1 and the lower mold 3 enclose to form a mold cavity 4, and the mold cavity 4 is used for containing powder 5. Wherein, the lower die 3 comprises a plurality of groups of lower die cores 31 which can move independently, correspondingly, the green brick powder 5 comprises a plurality of groups of powder aggregates 51 arranged above different lower die cores. During pressing, the upper die 2 moves integrally, the plurality of groups of lower die cores 31 move independently, and green brick powder 5 is pressed into non-uniform-thickness green bricks through the relative motion of the upper die 2 and the lower die 3; also, the compression ratios of the different groups of powder aggregates 41 are kept the same during and after the end of pressing.
Specifically, each lower mold core 31 is driven by a driving device 6 disposed therebelow, which may be, but is not limited to, a driving cylinder, an air cylinder, an electric driving device, or the like.
According to the forming equipment for the non-uniform-thickness green bricks, the lower die is arranged into a plurality of groups of lower die cores which can move independently, the lower die cores move independently under the driving of the power source in the pressing process, and further, the compression ratios of different parts of the non-uniform-thickness green bricks are effectively ensured to be consistent by controlling the displacement of the upper die and the lower die cores, the uniformity of different positions of the green bricks is enhanced, and the strength of the green bricks is improved.
Correspondingly, as a second aspect of the invention, the invention discloses a non-uniform-thickness green brick press forming method based on the non-uniform-thickness green brick press forming equipment, which comprises the following steps: (1) distributing the green brick powder 5 in a die cavity 5 formed by the die frame 1 and the lower die 3 according to a preset height; (2) the lower die 3 comprises a plurality of groups of lower die cores 31 which can move independently, and the plurality of groups of lower die cores 31 divide the green brick powder 5 positioned above the lower die cores into a plurality of groups of powder aggregates 51; (3) the upper die 2 moves integrally, the plurality of groups of lower die cores 31 move independently, and green brick powder 5 is pressed into non-uniform-thickness green bricks through the relative motion of the upper die 2 and the lower die 3; and the compression ratio of the powder aggregates of different groups is kept the same during and after the pressing.
Preferably, referring to fig. 4, the method for press forming non-uniform-thickness green bricks in the invention comprises the following steps:
s1: dividing the unequal-thickness green bricks into a plurality of green brick units according to the target thickness of the unequal-thickness green bricks, and recording the thickness h of each green brick uniti(ii) a The lower die is correspondingly divided into a plurality of groups of lower die cores which can be driven independently according to the adobe units;
specifically, S1 includes:
s11: dividing the non-uniform-thickness green bricks to be formed according to the target thickness, dividing the parts with the same thickness into the same green brick unit, and recording the thickness h of the green bricksi；
Specifically, the shape of the cross section of the green brick unit can be circular, oval, triangular, quadrilateral, pentagonal, hexagonal, octagonal, and the like, but is not limited thereto. Preferably, the sections of the green brick units are regular triangles, squares, rectangles or regular hexagons; these shapes enable the formation of a pattern mosaic.
Specifically, in the invention, the unequal-thickness green bricks comprise 2-50 green brick units, preferably 2-4 green brick units.
Specifically, in the invention, the thickness of the non-uniform-thickness green brick is 8-2000 mm; exemplary may be 8mm, 10mm, 12mm, 15mm, 20mm, 40mm, 80mm, 120mm, 500mm, 1000mm or 2000mm, but is not limited thereto. Preferably, the thickness of the non-uniform-thickness green brick is 20-2000 mm; more preferably 20 to 200 mm. The non-uniform thickness green bricks in the thickness range have larger influence on the strength and the yield of the bricks due to the uniformity.
S12: dividing a lower die of a press into a plurality of groups of lower die cores according to the unit sections of the green bricks;
specifically, dividing a lower die of a press into a plurality of groups of lower die cores according to the position and the shape of a green brick unit; each group of lower mold cores can be driven independently, and the movement of the lower mold cores is not influenced by other lower mold cores.
The cross-sectional shape of the lower core may be, but is not limited to, circular, elliptical, triangular, quadrangular, pentagonal, hexagonal, octagonal, etc. Preferably, the cross section of the lower die core is regular triangle, square, rectangle or regular hexagon; these shapes enable the formation of a pattern inlay, which in turn enables easy sealing between the lower cores. The clearance between the cores can be reduced to 0.1mm or less, and the particles of the pressed powder are larger than 60 mesh (0.25mm), so that the cores do not leak out from the clearance.
Specifically, the lower die comprises 2-50 lower die cores, and when the number of the lower die cores is too large, sealing is difficult, and powder leaks from gaps of the lower die cores. Preferably, the lower die comprises 2-4 lower die cores.
S2: determining a compression ratio;
specifically, the compression ratio is determined according to the type of powder and the type of green brick. For example, for ordinary ceramic tiles, the compression ratio should be controlled to be between 2.5 and 4; for general refractory bricks, the compression ratio should be controlled between 1.5 and 3. The compression ratio may be selected by one skilled in the art based on the particular operating conditions.
In the present invention, the compression ratio is not only the ratio of the initial filler depth before and after molding to the green brick thickness after molding. And also refers to the ratio of the initial filler depth to the powder thickness at any point in the compaction process.
S3: moving the lower mold core corresponding to each green brick unit to an initial position so that the lower mold core and the mold frame enclose to form a mold cavity;
wherein, when the ith group lower die core is positioned at the initial position, the distance H between the bottom of the ith group lower die core and the top of the die frameiComprises the following steps:
Hi＝hi
in particular, HiThe distance between the bottom of the lower mold core and the top of the mold frame (namely the filling depth of the powder aggregate of the ith group) when the lower mold core of the ith group is positioned at the initial position; is a compression ratio; h isiThe thickness of the ith unit of the pressed unequal-thickness green brick is shown.
S4: filling green brick powder into the mold cavity;
specifically, the multiple groups of lower mold cores divide the green brick powder above the lower mold cores into multiple groups of powder aggregates, and the thickness (filling depth) of the powder aggregate of the ith group is the distance between the bottom of the lower mold core of the ith group and the top of the mold frame (when the lower mold core of the ith group is located at the initial position).
S5: and moving the upper die and the lower die core, and pressing the green brick powder to obtain a non-uniform-thickness green brick finished product.
In the pressing process, the displacement of the upper die core and the lower die core is controlled, so that the compression ratio of different groups of powder aggregates is the same in the pressing process and after the pressing is finished.
Specifically, when the displacement of the downward movement of the upper die is x, the displacement of the downward movement of the lower die core of the ith group is as follows:
Figure BDA0002475657860000061
wherein, yiIs the downward movement of the i-th group of lower mold cores, hmaxIs the maximum thickness of the non-uniform-thickness green brick, hiThe thickness of the ith green brick unit is shown, and x is the downward movement displacement of the upper die.
Preferably, for convenience of control, the lower die core corresponding to the green brick unit with the largest thickness does not move in the pressing process; the remaining mold core moves.
Correspondingly, the invention also discloses a non-uniform-thickness green brick which is obtained by molding by adopting the molding method.
Specifically, the non-uniform-thickness brick blank can be a ceramic brick blank, a refractory brick blank, an artificial granite blank or an artificial quartz blank. Preferably a ceramic tile body or a refractory brick body, which are both formed by dry pressing powder. The preferred is a refractory brick green body, the thickness of the refractory brick green body is large, and the uniformity of the refractory brick green body has great influence on the thickness of the refractory brick green body; and the powder particles adopted for forming are larger.
The invention will be further illustrated by the following specific examples
Example 1
Referring to FIG. 5, the present invention provides a non-uniform thickness green brick, which is a refractory brick; the forming method comprises the following steps:
(1) dividing the non-uniform-thickness green bricks into green brick units according to the thicknesses of the non-uniform-thickness green bricks, and correspondingly dividing the lower die into a plurality of groups of lower die cores which can move independently according to the green brick units;
specifically, with reference to fig. 5, the non-uniform-thickness green bricks are divided into a first green brick unit 71 and a second green brick unit 72 according to the thickness; wherein the thickness h of the first green brick unit 711100 mm; thickness h of the second green brick unit 722＝60mm；
Referring to fig. 6, the lower mold is divided into a first lower mold core 31 corresponding to a first green brick unit 71 and a second lower mold core 32 corresponding to a second green brick unit 72 according to the condition of the green brick unit;
(2) determining a compression ratio;
determining the compression ratio to be 2.0 according to the formula type and the strength of the powder;
(3) moving the lower mold core corresponding to each green brick unit to an initial position so that the lower mold core and the mold frame enclose to form a mold cavity;
referring to fig. 6, when the first lower mold core 31 is in the initial position, the distance (filling depth) H between the bottom of the first lower mold core 31 and the top of the mold frame 1 is1＝h1＝2.0×100＝200mm；
When the second lower mold core 32 is in the initial position, the distance (filling depth) H between the bottom of the second lower mold core 31 and the top of the mold frame 12＝h2＝2.0×60＝120mm；
(4) Filling the green brick powder into a die cavity 4 formed by enclosing a die frame with a first lower die core 31 and a second lower die core 32;
(5) moving the upper die and the lower die core, and pressing the green brick powder to obtain a non-uniform-thickness green brick finished product;
wherein, in the pressing process, the first lower mold core 31 is controlled to be still;
when the upper die moves downwards by a distance x, the downward movement of the second lower die core is as follows:
Figure BDA0002475657860000071
and in the pressing process, according to the formula, the displacement of the second lower mold core is controlled according to the displacement of the upper mold.
Referring to fig. 7, when pressing is finished, the total displacement x of the upper diet＝H1-h1＝200-100＝100mm；
And the total displacement y of the second lower core2t＝0.4x＝0.4×100＝40mm。
Then the thickness h of the second green brick unit is calculated according to the displacement2＝H2-xt+y2t120 + 40-60 mm, the same as the actual situation, can be seen in the invention.
Example 2
The embodiment provides an application example of pressing and forming a non-uniform-thickness green brick;
specifically, 100 non-uniform-thickness green bricks prepared in the embodiment 1 of the invention are stacked and fired;
stacking and sintering the non-uniform-thickness green bricks 100 with the same specification prepared in the prior art (figures 1 and 2);
according to statistics, the yield of the non-uniform-thickness green bricks in the embodiment 1 of the invention is 94%; and the yield in the prior art is only 79 percent. Therefore, the non-uniform-thickness green bricks prepared by the forming method can effectively improve the strength and the yield.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A non-uniform-thickness green brick pressing forming device is characterized by comprising a die frame, an upper die and a lower die, wherein the lower die and the die frame form a die cavity for containing green brick powder; the lower die comprises a plurality of groups of lower die cores capable of moving independently, and the plurality of groups of lower die cores divide the green brick powder positioned above the lower die cores into a plurality of groups of powder aggregates;
the upper die integrally moves, a plurality of groups of lower die cores independently move, and green brick powder is pressed into non-uniform-thickness green bricks through the relative motion of the upper die and the lower die;
the compression ratio of different groups of powder aggregates is kept the same in the pressing process and after the pressing is finished.
2. A pressing forming method of non-uniform-thickness green bricks is characterized by comprising the following steps:
distributing the green brick powder in a die cavity formed by a die frame and a lower die according to a preset height;
the lower die comprises a plurality of groups of lower die cores capable of moving independently, and the plurality of groups of lower die cores divide the green brick powder positioned above the lower die cores into a plurality of groups of powder aggregates;
the upper die integrally moves, a plurality of groups of lower die cores independently move, and green brick powder is pressed into non-uniform-thickness green bricks through the relative motion of the upper die and the lower die;
wherein, the compression ratio of the powder aggregates of different groups is kept the same during the pressing process and after the pressing is finished.
3. The method for press forming a non-uniform thickness green brick according to claim 2, comprising:
(1) dividing the unequal-thickness green bricks into a plurality of green brick units according to the target thickness of the unequal-thickness green bricks, and recording the thickness h of each green brick uniti(ii) a The lower die is correspondingly divided into a plurality of groups of lower die cores which can move independently according to the adobe units;
(2) determining a compression ratio;
(3) moving the lower mold core corresponding to each green brick unit to an initial position so that the lower mold core and the mold frame enclose to form a mold cavity;
wherein, when the ith group lower die core is positioned at the initial position, the distance H between the bottom of the ith group lower die core and the top of the die frameiComprises the following steps:
Hi＝hi
wherein, is the compression ratio, HiIs the distance between the tops of the bottom die frames h when the i-th group of lower die cores are in the initial positioniIs the thickness of the ith group of green brick units;
(4) the green brick powder is filled into the die cavity, and the green brick powder above the die cavity is divided into a plurality of groups of powder aggregates by the lower die cores;
(5) moving an upper die and a lower die core, and pressing the green brick powder; the pressing process, the displacement of the upper die core and the lower die core is controlled, so that the compression ratio of different groups of powder aggregates is the same after the pressing process and the pressing are finished;
wherein, when the upper die moves down and shifts for x, the i-th group of lower die cores move down and shift for:
Figure FDA0002475657850000021
wherein, yiIs the downward movement of the i-th group of lower mold cores, hmaxIs the maximum thickness of the non-uniform-thickness green brick, hiThe thickness of the ith green brick unit is shown, and x is the downward movement displacement of the upper die.
4. The method for press forming non-uniform-thickness adobe as claimed in claim 3, wherein in the step (1), the adobe units have one or more of triangular, rectangular, circular, pentagonal, hexagonal or octagonal cross sections.
5. The press-forming method of non-uniform-thickness adobe as claimed in claim 3, wherein the maximum thickness of the non-uniform-thickness adobe is 20 to 2000 mm.
6. The method for press-forming a non-uniform-thickness adobe according to claim 3, wherein the non-uniform-thickness adobe is a ceramic tile body, a refractory brick body, an artificial granite body or an artificial quartz body.
7. The press forming method for non-uniform-thickness green bricks according to claim 3, wherein the lower mold comprises 2-50 sets of lower mold cores.
8. The method for press forming a non-uniform-thickness adobe as claimed in claim 3 or 7, wherein the lower die comprises 2-4 sets of lower die cores.
9. The press-forming method of non-uniform-thickness adobe as claimed in claim 3, wherein in the step (5), the lower mold core corresponding to the adobe unit with the largest thickness does not move.
10. A non-uniform thickness green brick, characterized in that it is formed by the forming method according to any one of claims 2 to 9.
CN202010362757.0A 2020-04-30 2020-04-30 Non-uniform-thickness green brick press forming equipment and method and non-uniform-thickness green brick Pending CN111571773A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112720800A (en) * 2020-12-16 2021-04-30 佛山市恒力泰机械有限公司 Compression molding method and equipment of refractory box and refractory box
CN113172747A (en) * 2021-03-31 2021-07-27 佛山市恒力泰机械有限公司 Method, device and system for correcting and controlling thickness of filler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112720800A (en) * 2020-12-16 2021-04-30 佛山市恒力泰机械有限公司 Compression molding method and equipment of refractory box and refractory box
CN112720800B (en) * 2020-12-16 2022-07-26 佛山市恒力泰机械有限公司 Compression molding method and equipment of refractory box and refractory box
CN113172747A (en) * 2021-03-31 2021-07-27 佛山市恒力泰机械有限公司 Method, device and system for correcting and controlling thickness of filler

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