CN115366227A - Green brick forming process - Google Patents
Green brick forming process Download PDFInfo
- Publication number
- CN115366227A CN115366227A CN202210947120.7A CN202210947120A CN115366227A CN 115366227 A CN115366227 A CN 115366227A CN 202210947120 A CN202210947120 A CN 202210947120A CN 115366227 A CN115366227 A CN 115366227A
- Authority
- CN
- China
- Prior art keywords
- hopper
- floating frame
- die
- material distribution
- floating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011449 brick Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000008569 process Effects 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 312
- 238000007667 floating Methods 0.000 claims abstract description 113
- 238000009826 distribution Methods 0.000 claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 230000005484 gravity Effects 0.000 claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 230000006835 compression Effects 0.000 description 21
- 238000007906 compression Methods 0.000 description 21
- 239000000047 product Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000011452 unfired brick Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- 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
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
-
- 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
- B28B13/026—Feeding the moulding material in measured quantities from a container or silo by using a movable hopper transferring the moulding material to the moulding cavities
-
- 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
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
Abstract
The invention discloses a green brick forming process, which comprises the following steps: material distribution: the material distributing mechanism puts the material in a material receiving space formed between the upper part of the lower die and the die cavity; initial pressing: the upper die moves downwards to contact the material, and the upper die and the lower die approach to each other simultaneously to compress the material; the floating oil cylinder cancels the locking action on the floating frame, and the material is compressed in the vertical direction in the process of compressing the material by the upper die and the lower die, so that horizontal pressure is generated on the die cavity, the horizontal pressure is converted into acting force in the vertical direction on the floating frame, and the floating frame moves downwards under the action of gravity when the acting force in the vertical direction is smaller than the gravity of the floating frame; when the acting force in the vertical direction is equal to or greater than the gravity of the floating frame, the floating frame moves together with the material in a free floating state; secondary pressurization; and (6) opening the mold. The process can effectively discharge bubbles in time in the green brick pressing and forming process, thereby improving the green brick forming quality; and the energy consumption is lower in the pressing process.
Description
Technical Field
The invention relates to the technical field of green brick forming equipment, in particular to a green brick forming process.
Background
The green brick is also called green body or green body, which means that the pug is processed and formed into an intermediate product which has a certain shape, size and strength and can be used for firing by means of external force and a model, the green brick is called wet brick without being dried, the dried green brick is called dry brick, and the product which can be directly used without being fired after being formed is called unfired brick. In the process of producing the green bricks, a special forming press is needed to extrude the green bricks.
The forming press in the prior art generally adopts a hydraulic press, and all the forming presses are pressed from top to bottom when in use, and belong to a one-way pressing mode, for example, the invention patent application with the application publication number of CN109795155A discloses a hydraulic press for forming a rapid powder product, and the powder in a die cavity is pressed and formed from top to bottom by a main pressure rod driving a mould pressing plate. Such a press forming method is suitable for powder materials or pressing thin products, such as ceramic tiles, etc., and products with a thickness of more than 20mm can easily cause the density of the surface of the product to be inconsistent with that of the bottom surface. Therefore, utility model patent that grant publication number is CN209599947U discloses a press forming device, through last press operation chamber and the lower press operation chamber that sets up at this internal symmetry of press, can carry out two-way pressor pressing mode from top to bottom to the product that surpasss 20mm thickness, causes the product of thickening to receive the same pressure from top to bottom simultaneously to make the upper and lower density of product completely unanimous. However, the above molding apparatus has the following disadvantages:
pressurize from top to bottom through drive top board and lower clamp plate, carry out two-way pressurization simultaneously to the loose material in the moulding-die, because the moulding-die is in fixed state and loose material and has a large amount of air, because of the structural layer in the material combines from top to bottom fast in the pressing process, a large amount of bubbles can't in time be discharged from the moulding-die, form the gas trapping phenomenon, lead to the material to arouse inside intermediate layer defect after the shaping, lead to the product quality after the shaping step-down.
In order to solve the technical problem, the prior application CN112895549a of the applicant discloses a double-pressurization type powerful press with a lifting platform, wherein the press not only adopts a double-pressure mechanism of an upper press and a lower press, but also is additionally provided with the lifting platform, and a die cavity is arranged on the lifting platform; please refer to paragraph 0021 of the specification of the application, during operation, the upper main oil cylinder 11 and the lower main oil cylinder 21 pressurize and compact the material, after compacting the material, the lower main oil cylinder 21 retracts to move downwards, the upper main oil cylinder 11 continues to move downwards and pressurize, the lifting platform 4 accelerates to move downwards, at this time, the buffer oil cylinder 5 exerts upward force to play a role in buffering the descending of the lifting platform 4, the product forming and stamping time is prolonged, enough time is provided for releasing and discharging bubbles in the product, and the defect of an internal interlayer of the product caused by the fact that small parts of residual bubbles cannot be released and discharged in time in the upper and lower structural layers in the product formed by the upper and lower pressing machines is effectively reduced. However, the following problems still exist in the working process:
1. after the upper main oil cylinder 11 and the lower main oil cylinder 21 press and compact the material in the up-down direction, the material expands in the horizontal direction, and extrusion sealing is formed between the material and the inner wall of the die cavity on the lifting platform, so that gas in the material is difficult to escape from the connecting surface between the material and the inner wall of the die cavity, and the gas is difficult to escape along with the increase of the compaction degree, and at the moment, the upper and lower directions of the material are respectively extruded by the upper die 100 and the force-bearing fixed die 7, and the gas is difficult to exhaust in the up-down direction, so that the gas trapping phenomenon still exists in the product;
2. in order to prolong the pressing time and obtain more exhaust time, the material is pressed and compacted by the upper main oil cylinder 11 and the lower main oil cylinder 21, after the material is compacted, the lower main oil cylinder 21 retracts to move downwards, the upper main oil cylinder 11 continues to move downwards for pressurization, the lifting platform 4 accelerates to move downwards, and at the moment, the buffer oil cylinder 5 exerts force upwards to play a role in buffering the descending of the lifting platform 4; therefore, the buffer cylinder 5 needs to exert force to buffer, and the upper main cylinder 11 continues to move and pressurize, so that additional energy consumption is generated in the buffer cylinder 5, and meanwhile, the energy consumption of the upper main cylinder is also consumed, and the overall energy consumption is increased.
Disclosure of Invention
The invention aims to overcome the existing problems and provide a green brick forming process, which can effectively discharge bubbles in time in the green brick pressing forming process, avoid the defect of an internal interlayer caused by the formed materials and improve the green brick forming quality; and the energy consumption is lower during the pressing process.
The purpose of the invention is realized by the following technical scheme:
a green brick forming process comprises the following steps:
(1) Material distribution: the floating frame is controlled by a floating oil cylinder and is fixed at the cloth plane; the lower die moves into the die cavity of the floating frame, the space between the upper part of the lower die and the die cavity is a material receiving space, and the material is put into the material receiving space by the material distributing mechanism;
(2) Initial pressing: the upper die moves downwards to contact the material, and the upper die and the lower die move close to each other at the same time to compress the material; when the upper die and the lower die begin to compress materials, the floating oil cylinder cancels the locking action on the floating frame, the materials are compressed in the vertical direction and expand outwards in the horizontal direction in the process of compressing the materials by the upper die and the lower die, so that horizontal pressure is generated on a die cavity and is converted into acting force in the vertical direction of the floating frame, when the acting force in the vertical direction is smaller than the gravity of the floating frame, the floating frame moves downwards under the action of the gravity, namely, the floating frame and the materials move in a staggered manner, and gas quickly escapes from the inner wall of the die cavity of the floating frame at the stage; when the acting force in the vertical direction is equal to or greater than the gravity of the floating frame, the floating frame moves along with the material in a free floating state;
(3) After initial pressing, the upper die is slightly lifted upwards, a gap is directly formed between the upper die and the upper surface of the material, and gas in the material is quickly discharged from the gap; at the moment, the floating frame is kept in a stationary state due to the extrusion of the materials; then the upper die moves downwards to contact the materials again, and the materials are pressurized for the second time until the materials form green brick products;
(4) Opening the mold: the upper die is lifted and reset, the floating oil cylinder drives the floating frame to move downwards, so that the green bricks are exposed, and the green bricks are moved away through the manipulator.
The working principle of the green brick forming process is as follows:
during initial pressing, when the upper die and the lower die compress materials, the floating oil cylinder cancels the locking effect on the floating frame, and the die cavity is subjected to horizontal pressure generated when the materials are compressed, so that the materials and the die cavity have friction force, the friction force gradually increases along with the compression, and the friction force can be converted into acting force in the vertical direction of the floating frame to offset the self gravity of the floating frame; after the locking effect to the floating frame is cancelled at the floating oil cylinder, when the effort to vertical direction equals the gravity of floating frame, can produce a relative motion between the die cavity of material and floating frame, make the area of trapping gas destroyed and expose, thereby can let gas discharge fast from the contact surface between material and the die cavity, because at the initial compression stage, the compression ratio is big, gaseous effluvium is the biggest, consequently at this stage through letting produce mutual dislocation motion between material and the floating frame, be favorable to gaseous quick discharge. In addition, after the first compression is completed, the upper die slightly lifts up quickly, an exhaust gap is formed above the material, and gas in the material can be quickly exhausted.
In a preferred embodiment of the present invention, the upper mold and the lower mold move close to each other at the same time, and when compressing the material, the acting force of the upper mold on the material is smaller than that of the lower mold on the material, and the material moves upward relative to the floating frame. The device is characterized in that dislocation can occur under the gravity of a floating frame in the process of compressing the material, so that a gas trapping area is damaged and exposed, and gas can be discharged from a contact surface between the material and a mold cavity; furthermore, the acting force of the upper die to the material is smaller than that of the lower die to the material, so that the material has the tendency of moving upwards, the dislocation distance between the material and the floating frame is further increased, the exhaust of the material is accelerated, and the forming quality of a green brick product is improved.
Preferably, in the step (3), after the material is pressurized for the second time, the upper die is slightly lifted upwards to perform secondary exhaust; then, the pressurization is carried out three times or more, and the above-mentioned exhausting action is carried out before a new pressurization. The method aims to ensure the compactness of the green brick, improve the quality of the green brick, increase the air displacement and reduce the air trapping phenomenon in the green brick as much as possible.
Preferably, the upper end of the mould cavity has a taper. Its aim at, the inclination can guarantee to have certain small distance between mould and the die cavity, at the in-process of compression material, is convenient for gaseous from small distance quick discharge.
Preferably, in the step (1), the cloth is a secondary cloth, a cloth platform is arranged on the cloth plane, and the cloth platform and the cloth plane are on the same horizontal plane; wherein the content of the first and second substances,
in the die cavity of lower mould motion to floating frame, the space between lower mould top and the die cavity is for connecing the material space, and the concrete step that the cloth mechanism was put in the material and is connecing the material space is:
(A1) The material distribution mechanism comprises two hoppers which are arranged on the material distribution platform and used for placing different materials, namely a first hopper and a second hopper; the charging bucket puts different materials into the first hopper and the second hopper, and the positions of the first hopper and the second hopper are the material adding positions;
(A2) The lower die moves upwards and extends into the die cavity of the floating frame until the lower die moves to be aligned with the cloth plane;
(A3) The first hopper and the second hopper move on the material distribution platform simultaneously and reach the material distribution position through the floating frame;
(A4) The first hopper and the second hopper move towards the direction of the material adding position on the material distributing platform until the first hopper is positioned at a position corresponding to the die cavity of the floating frame, the lower die moves downwards to a set height, and the material on the first hopper falls into the material receiving space until the material receiving space is filled;
(A5) The first hopper and the second hopper continue to move towards the direction of the material adding position on the material distribution platform until the second hopper is positioned at a position corresponding to the die cavity of the floating frame, the lower die moves downwards to a set height, and the material on the second hopper falls into the material receiving space until the material receiving space is filled;
(A6) The first hopper and the second hopper move to the material adding position to prepare for next material distribution.
Preferably, in the step (A1), the material tank puts the material into the hopper through a material distribution hopper, the material distribution hopper is provided with a plurality of channels, and the plurality of channels are uniformly distributed in the hopper. Because the materials are crushed aggregates with different shapes, weights and sizes, if the crushed aggregates are directly put into the hopper through the charging bucket, the shapes are round, the crushed aggregates with larger particles roll around, the particles of the materials around the hopper are larger, the particles of the middle particles are smaller, and the crushed aggregates of the whole hopper are unevenly distributed, so that the strength is reduced and the quality is poor when the crushed aggregates are pressed into green bricks; according to the invention, the material is put into the hopper through the material distribution hopper, and the material can be conveyed into the hopper along the channel, so that the phenomenon that the shape is round, and the crushed aggregates with larger particles roll around is avoided, and the material can be evenly put into all places of the hopper; the strength and the quality of green brick forming are improved.
Preferably, when the material is put in, the material distribution hopper is positioned in the hopper and is in contact with the material distribution platform; before step (A3) is performed, the material distribution hopper is moved upwards so that the material distribution hopper is separated from the hopper. The material distribution hopper is positioned in the hopper and is in contact with the material distribution platform, so that when the materials are put in, the materials are put in the hopper to be smoother; on the other hand, the material is guaranteed to be mixed more evenly in the hopper. Before step (A3) is performed, the material distribution hopper moves upwards so that the material distribution hopper is separated from the hopper; therefore, materials in the hopper can be fully and uniformly mixed before being distributed, so that the materials can more uniformly fall into the material receiving space.
Preferably, each channel is also provided with a plurality of small channels, and the small channels are uniformly distributed in the channel. By adopting the structure, the uniformity of material feeding can be further improved.
Compared with the prior art, the invention has the following beneficial effects:
1. in the green brick forming process, in the process of compressing the material, the material and the floating frame generate relative movement, so that the gas trapping area is damaged and exposed, and gas can be discharged from the contact surface between the material and the die cavity; because the compression ratio is large in the initial compression stage, the gas escape amount is maximum, and therefore mutual dislocation motion is generated between the material and the floating frame in the initial compression stage, and rapid gas discharge is facilitated. In addition, after the first compression is completed, the upper die slightly lifts up quickly, an exhaust gap is formed above the material, and gas in the material can be quickly exhausted. Compared with the air exhaust in the prior art, the air exhaust device has the advantages that the material compression time is short, the air exhaust is realized during one-side compression, and the air is quickly exhausted by manufacturing the space which is favorable for the air exhaust, so that air bubbles can be effectively and fully exhausted in time, the defect of an inner interlayer caused by the material after molding is avoided, and the molding quality of a green brick is improved; the prior art improves the new exhaust effect by prolonging the exhaust time, but the exhaust effect of the invention is very obvious compared with the prior art because the exhaust channel is obstructed.
2. According to the green brick forming process, in the process of compacting materials, the floating oil cylinder can cancel the locking effect on the floating frame, so that the energy consumption of the floating oil cylinder is reduced, and meanwhile, the energy consumption of other oil cylinders is not consumed, so that the overall energy consumption is reduced, the resources are saved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a forming mechanism in a green brick forming process in the invention.
Fig. 2 is a schematic structural view of a green brick molding apparatus in the green brick molding process of the present invention.
Fig. 3 is a schematic structural diagram of the material distribution hopper in different positions.
FIGS. 4-9 are schematic views of each step of distributing material in a green brick forming process according to the present invention, wherein FIG. 4 is a schematic view of the step (A1); FIG. 5 is a schematic view of the structure in the step (A2); FIG. 6 is a schematic view of the structure in the step (A3); FIG. 7 is a schematic view of the structure in the step (A4); FIG. 8 is a schematic view of the structure in the step (A5); fig. 9 is a schematic structural view in the step (A6).
FIG. 10 is a schematic structural diagram of step (2) in the green brick forming process of the present invention.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the present invention will be further described below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1 and 10, the present embodiment discloses a green brick molding process, which includes the following steps:
(1) Material distribution: the floating frame 1 is controlled by a floating oil cylinder 2, and the floating frame 1 is fixed on the cloth plane; the lower die 4 moves into the die cavity 5 of the floating frame 1, the space between the upper part of the lower die 4 and the die cavity 5 is a material receiving space, and the material is put into the material receiving space by the material distributing mechanism;
(2) Initial pressing: the upper die 3 moves downwards to contact the material, and the upper die 3 and the lower die 4 move close to each other at the same time to compress the material; when the upper die 3 and the lower die 4 begin to compress materials, the floating oil cylinder 2 cancels the locking effect on the floating frame 1, the materials are compressed in the vertical direction and expand outwards in the horizontal direction in the process of compressing the materials by the upper die 3 and the lower die 4, so that horizontal pressure is generated on the die cavity 5, the horizontal pressure is converted into acting force in the vertical direction of the floating frame 1, when the acting force in the vertical direction is smaller than the gravity of the floating frame 1, the floating frame 1 can move downwards under the action of gravity, namely, dislocation motion is generated between the floating frame 1 and the materials, and gas rapidly escapes from the space between the materials and the inner wall of the die cavity 5 of the floating frame 1 at the stage; when the acting force in the vertical direction is equal to or greater than the gravity of the floating frame 1, the floating frame 1 moves along with the materials in a free floating state;
(3) After initial pressing, the upper die 3 is slightly lifted upwards, a gap is directly formed between the upper die 3 and the upper surface of the material, and gas in the material is quickly discharged from the gap; at this time, the floating frame 1 is kept in a stationary state due to the extrusion of the materials; then the upper die 3 moves downwards to contact the materials again, and the materials are pressurized for the second time until the materials form green brick products;
(4) Opening the mold: the upper die 3 is lifted and reset, the floating oil cylinder 2 drives the floating frame 1 to move downwards, so that the green bricks are exposed, and the green bricks are moved away through the manipulator.
Referring to fig. 1 and 10, in the green brick molding process of the present embodiment, during the process of compressing the material, the material and the floating frame 1 are moved relatively, so that the gas trapping area is destroyed and exposed, thereby allowing gas to escape from the interface between the material and the mold cavity 5; because the compression ratio is large in the initial compression stage, the gas escape amount is maximum, and therefore mutual dislocation motion is generated between the material and the floating frame in the initial compression stage, and rapid gas discharge is facilitated. In addition, after the first compression is completed, the upper die slightly lifts up quickly, an exhaust gap is formed above the material, and gas in the material can be quickly exhausted. Compared with the air exhaust in the prior art, the air exhaust device has the advantages that the material compression time is short, the air exhaust is realized during one-side compression, and the air is quickly exhausted by manufacturing the space which is favorable for the air exhaust, so that air bubbles can be effectively and fully exhausted in time, the defect of an inner interlayer caused by the material after molding is avoided, and the molding quality of a green brick is improved; the prior art improves the new exhaust effect by prolonging the exhaust time, but the exhaust effect of the invention is very obvious compared with the prior art because the exhaust channel is obstructed.
Referring to fig. 1 and 10, in the green brick molding process in the embodiment, in the process of compacting materials, the floating oil cylinder 2 cancels the locking effect on the floating frame 1, so that the energy consumption of the floating oil cylinder 2 is reduced, and the energy consumption of other oil cylinders is not consumed, so that the overall energy consumption is reduced, the resources are saved, and the production cost is reduced.
Referring to fig. 1 and 10, the upper die 3 and the lower die 4 move close to each other at the same time, when compressing the material, the acting force of the upper die 3 on the material is smaller than that of the lower die 4 on the material, and the material moves upward relative to the floating frame 1. The purpose is that dislocation can occur under the gravity of the floating frame 1 in the process of compressing the material, so that the gas trapping area is damaged and exposed, and gas can be discharged from the contact surface between the material and the die cavity 5; further, the acting force of the upper die 3 on the material is smaller than that of the lower die 4 on the material, so that the material has the tendency of moving upwards, the dislocation distance between the material and the floating frame 1 is further increased, the exhaust of the material is accelerated, and the forming quality of a green brick product is improved.
Specifically, in the step (3), after the material is pressurized for the second time, the upper die 3 is slightly lifted upwards to perform secondary exhaust; then, the pressurization is carried out three times or more, and the above-mentioned exhausting action is carried out before a new pressurization. The method aims to ensure the compactness of the green brick, improve the quality of the green brick, increase the air displacement and reduce the air trapping phenomenon in the green brick as much as possible.
Specifically, the upper end of the cavity 5 has a slight slope in the direction of outward inclination, i.e., the opening of the upper end of the cavity 5 becomes gradually smaller along the lower direction. Its aim at, the inclination can guarantee to go up to have certain small distance between mould 3 and the die cavity 5, and at the in-process of compressed materials, the gas of being convenient for is discharged from small distance fast.
Referring to fig. 2 and fig. 4 to 9, in the step (1), the cloth is a secondary cloth, a cloth platform 6 is arranged on the cloth plane, and the cloth platform 6 and the cloth plane are on the same horizontal plane; wherein, in lower mould 4 moved to the die cavity 5 of floating frame 1, the space between 4 tops of lower mould and the die cavity 5 was for connecing the material space, and the concrete step that the cloth mechanism put in the material in connecing the material space is:
(A1) The material distribution mechanism comprises two hoppers 7 which are arranged on the material distribution platform 6 and used for placing different materials, namely a first hopper 7-1 and a second hopper 7-2; the charging bucket 8 puts different materials into the first hopper 7-1 and the second hopper 7-2, and the position of the first hopper 7-1 and the second hopper 7-2 is a charging position 9;
(A2) The lower die 4 moves upwards and extends into the die cavity 5 of the floating frame 1 until the lower die moves to be aligned with the cloth plane;
(A3) The first hopper 7-1 and the second hopper 7-2 move on the material distribution platform 6 simultaneously and reach a material distribution position 10 through the floating frame 1 and the upper die 3;
(A4) The first hopper 7-1 and the second hopper 7-2 move towards the direction of the feeding position 9 on the material distributing platform 6 until the first hopper 7-1 is positioned at a position corresponding to the die cavity 5 of the floating frame 1, the lower die 4 moves downwards to a set height, and the material on the first hopper 7-1 falls into the material receiving space until the material receiving space is filled;
(A5) The first hopper 7-1 and the second hopper 7-2 continue to move towards the direction of the material adding position 9 on the material distributing platform 6 until the second hopper 7-2 is positioned at a position corresponding to the mold cavity 5 of the floating frame 1, the lower mold 4 moves downwards to a set height, and the material on the second hopper 7-2 falls into the material receiving space until the material receiving space is filled;
(A6) The first hopper 7-1 and the second hopper 7-2 move to the charging position 9 in preparation for the next distribution.
Referring to fig. 4 and 9, the green brick generally comprises two layers, namely a bottom layer and a surface layer, wherein the bottom layer is made of a bottom material, the surface layer is made of a surface material, the material stored in the first hopper 7-1 is a bottom material, and the material stored in the second hopper 7-2 is a surface material; by arranging the first hopper 7-1 and the second hopper 7-2, on one hand, secondary material distribution of green brick molding is realized, and the amount of required bottom materials and surface materials is accurately controlled by controlling the position of the lower die 4 during material distribution; on the other hand, the materials of the hopper 7 directly fall into the material receiving space, so that the sufficient materials can be filled in the die cavity 5, when the first hopper 7-1 or the second hopper 7-2 is filled, the materials move on the material distributing platform 6, the bottom materials or the surface materials can be scraped smoothly, and the sizes are more uniform when the materials are compressed.
Referring to fig. 2 and 3, in the step (A1), the charging bucket 8 puts the material into the hopper 7 through the material distribution hopper 11, the material distribution hopper 11 is provided with a plurality of channels 11-1, the plurality of channels 11-1 are uniformly distributed, and the positions of the plurality of channels 11-1 correspond to the positions of the hopper 7. Because the materials are crushed aggregates with different shapes, weights and sizes, if the crushed aggregates are directly put into the hopper 7 through the charging bucket 8, the shapes are round, the crushed aggregates with larger particles roll around, so that the material particles around the hopper 7 are larger, the middle particles are smaller, and the crushed aggregates of the whole hopper 7 are unevenly distributed, so that the strength is reduced and the quality is poor when the crushed aggregates are pressed into green bricks; according to the invention, the material is put into the hopper 7 through the material distribution hopper 11, and the material can be conveyed into the hopper 7 along the channel 11-1, so that the phenomenon that the shape is round, and the crushed aggregates with larger particles roll around is avoided, and the material can be evenly put into all places of the hopper 7; the strength and the quality of green brick forming are improved.
Referring to fig. 3, a plurality of said channels 11-1 may be arranged in a matrix, each channel 11-1 being located close together, so that substantially uniform distribution of material into the hopper 7 is obtained.
Referring to fig. 2 and 3, when the material is put in, the material distribution hopper 11 is positioned inside the hopper 7, and the material distribution hopper 11 is in contact with the material distribution platform 6; before step (A3) is performed, the material distribution hopper 11 is moved upward, so that the material distribution hopper 11 is separated from the hopper 7. The aim is that on one hand, the material distribution hopper 11 is positioned inside the hopper 7, and the material distribution hopper 11 is in contact with the distribution platform 6, so that when the material is put in, the material is put in the hopper 7 to be smoother; on the other hand, the material is guaranteed to be mixed more uniformly in the hopper 7. Before step (A3) is performed, the material distribution hopper 11 is moved upward, so that the material distribution hopper 11 is separated from the hopper 7; therefore, materials in the hopper 7 can be fully and uniformly mixed before being distributed, and the materials can more uniformly fall into the material receiving space.
Referring to fig. 3, the material distribution hopper 11 may be disposed on the hopper 7, and may be moved on the hopper 7 along a vertical direction by a way of combining a spring and a guide rail (not shown in the figure), so that when the material is put in, the material distribution hopper 11 is located inside the hopper 7, and the material distribution hopper 11 is in contact with the material distribution platform 6, specifically, the material distribution hopper 11 may be in a fixed state by a locking structure or a limiting mechanism (not shown in the figure), and when the material is put in, the material distribution hopper 11 is kept in contact with the material distribution platform 6; before step (A3) is performed, the locking structure or the limiting mechanism is released, and the material distribution hopper 11 is moved upwards by the elastic force of the spring, so that the material distribution hopper 11 is separated from the hopper 7.
Referring to fig. 3, a plurality of small channels 11-11 are further disposed in each channel 11-1, and the plurality of small channels 11-11 are uniformly distributed in the channel 11-1. By adopting the structure, the uniformity of material feeding can be further improved.
Referring to fig. 3, a plurality of said small channels 11-11 may be arranged in a matrix, each small channel 11-11 being arranged close together, so that the material is thrown substantially evenly into the hopper 7.
Referring to fig. 1 and 10, the working principle of the green brick forming process is as follows:
during initial pressing, when the upper die 3 and the lower die 4 compress materials, the floating oil cylinder 2 cancels the locking effect on the floating frame 1, the die cavity 5 is subjected to horizontal pressure generated when the materials are compressed, so that the materials and the die cavity 5 have friction force, the friction force is gradually increased along with the compression, and the friction force can be converted into acting force in the vertical direction of the floating frame 1 to counteract the gravity of the floating frame 1; after the locking effect of floating oil cylinder 2 to floating frame 1 is cancelled, when vertical direction's effort equals the gravity of floating frame 1, can produce a relative motion between material and the die cavity 5 of floating frame 1, make the area of trapping gas destroyed and expose, thereby can let gas discharge from the contact surface between material and the die cavity 5, because at the initial compression stage, compression ratio is big, and gaseous effluvium is the biggest, consequently through producing the dislocation motion each other between material and the floating frame 1 at this stage, be favorable to gaseous quick discharge. In addition, after the first compression is completed, the upper die 3 is lifted up slightly quickly, an exhaust gap is formed above the material, and the gas in the material can be exhausted quickly.
Referring to fig. 1 and fig. 2, the embodiment further discloses a green brick molding device, which comprises a feeding mechanism, a distributing mechanism and a molding mechanism; the material distribution mechanism comprises a material distribution platform 6, a hopper 7 arranged on the material distribution platform 6 and a material distribution driving mechanism for driving the hopper 7 to move on the material distribution platform 6; the forming mechanism comprises a floating frame 1, a floating oil cylinder 2, an upper die 3, a lower die 4, an upper driving mechanism and a lower driving mechanism; the floating frame 1 is internally provided with a die cavity 5, the upper die 3 and the lower die 4 are matched with the die cavity 5, and the floating oil cylinder 2 is used for controlling the floating frame 1 to be in a fixed, moving or free floating state; the upper driving mechanism is used for driving the upper die 3 to move along the up-down direction, and the lower driving mechanism is used for controlling the lower die 4 to move along the up-down direction; the feeding mechanism comprises a charging bucket 8 and a material distribution hopper 11 arranged on the hopper 7, and the material distribution hopper 11 can move along the up-down direction.
The upper driving mechanism and the lower driving mechanism are both oil cylinders.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (8)
1. A green brick forming process is characterized by comprising the following steps:
(1) Material distribution: the floating frame is controlled by a floating oil cylinder and is fixed at the cloth plane; the lower die moves into the die cavity of the floating frame, the space between the upper part of the lower die and the die cavity is a material receiving space, and the material is put into the material receiving space by the material distributing mechanism;
(2) Initial pressing: the upper die moves downwards to contact the material, and the upper die and the lower die move close to each other at the same time to compress the material; when the upper die and the lower die begin to compress materials, the floating oil cylinder cancels the locking action on the floating frame, the materials are compressed in the vertical direction and expand outwards in the horizontal direction in the process of compressing the materials by the upper die and the lower die, so that horizontal pressure is generated on a die cavity and is converted into acting force in the vertical direction of the floating frame, when the acting force in the vertical direction is smaller than the gravity of the floating frame, the floating frame moves downwards under the action of the gravity, namely, the floating frame and the materials move in a staggered manner, and gas quickly escapes from the inner wall of the die cavity of the floating frame at the stage; when the acting force in the vertical direction is equal to or greater than the gravity of the floating frame, the floating frame moves along with the material in a free floating state;
(3) Secondary pressurization: the upper die is slightly lifted upwards, a gap is directly formed between the upper die and the upper surface of the material, and gas in the material is quickly discharged from the gap; at the moment, the floating frame is kept in a stationary state due to the extrusion of the materials; then the upper die moves downwards to contact the materials again, and the materials are pressurized for the second time until the materials form green brick products;
(4) Opening the die: the upper die is lifted and reset, the floating oil cylinder drives the floating frame to move downwards, so that the green bricks are exposed, and the green bricks are moved away through the manipulator.
2. The green brick forming process according to claim 1, wherein in the step (2), the upper die and the lower die are moved close to each other at the same time, when the material is compressed, the acting force of the upper die on the material is smaller than that of the lower die, and the material moves upward relative to the floating frame.
3. The green brick molding process according to claim 1, wherein in the step (3), after the material is pressurized for the second time, the upper mold is slightly lifted upwards to perform secondary exhaust; then, the pressurization is carried out three times or more, and the above-mentioned exhausting action is carried out before a new pressurization.
4. A green brick forming process according to claim 1 wherein the upper end of the cavity is tapered.
5. The adobe forming process according to claim 1, wherein in the step (1), the material distribution is a secondary material distribution, a material distribution platform is arranged on the material distribution plane, and the material distribution platform and the material distribution plane are on the same horizontal plane;
in the die cavity of lower mould motion to floating frame, the space between lower mould top and the die cavity is for connecing the material space, and the concrete step that the cloth mechanism was put in the material and is connecing the material space is:
(A1) The material distribution mechanism comprises two hoppers which are arranged on the material distribution platform and used for placing different materials, namely a first hopper and a second hopper; the charging bucket puts different materials into the first hopper and the second hopper, and the positions of the first hopper and the second hopper are the material adding positions;
(A2) The lower die moves upwards and extends into the die cavity of the floating frame until the lower die moves to be aligned with the cloth plane;
(A3) The first hopper and the second hopper move on the material distribution platform at the same time and reach the material distribution position through the floating frame;
(A4) The first hopper and the second hopper move on the material distribution platform towards the direction of the material adding position until the first hopper is positioned at a position corresponding to the die cavity of the floating frame, the lower die moves downwards to a set height, and the material on the first hopper falls into the material receiving space until the material receiving space is filled;
(A5) The first hopper and the second hopper continue to move towards the direction of the material adding position on the material distribution platform until the second hopper is positioned at a position corresponding to the die cavity of the floating frame, the lower die moves downwards to a set height, and the material on the second hopper falls into the material receiving space until the material receiving space is filled;
(A6) The first hopper and the second hopper move to the material adding position to prepare for next material distribution.
6. A green brick forming process according to claim 5, wherein in step (A1), the charging bucket delivers the material into the charging bucket through a material distribution hopper, the material distribution hopper is provided with a plurality of channels, and the plurality of channels are uniformly distributed in the charging bucket.
7. A green brick molding process according to claim 6, wherein in the step (A1), when the material is put in, the material distribution hopper is positioned inside the hopper and is in contact with the material distribution platform; before step (A3) is performed, the material distribution hopper is moved upwards so that the material distribution hopper is separated from the hopper.
8. A green brick forming process according to claim 6, wherein each channel is further provided with a plurality of small channels, and the small channels are uniformly distributed in the channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947120.7A CN115366227B (en) | 2022-08-08 | 2022-08-08 | Green brick forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947120.7A CN115366227B (en) | 2022-08-08 | 2022-08-08 | Green brick forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115366227A true CN115366227A (en) | 2022-11-22 |
| CN115366227B CN115366227B (en) | 2024-04-09 |
Family
ID=84064406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210947120.7A Active CN115366227B (en) | 2022-08-08 | 2022-08-08 | Green brick forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115366227B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117069426A (en) * | 2023-08-09 | 2023-11-17 | 浙江嘉吉石化工程有限公司 | Nanometer microporous heat-insulating plate and preparation method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB705377A (en) * | 1950-02-07 | 1954-03-10 | Morgan Crucible Co | Improvements in or relating to the manufacture of brick |
| FR2431361A1 (en) * | 1978-07-19 | 1980-02-15 | Demler Sa Ets | Concrete distributing drawer for precasting machine - contains floating frame seal which moves between overhead feed and mould below |
| CN1099711A (en) * | 1993-02-17 | 1995-03-08 | E.卡休基工业公司 | Methods and systems for manufacturing packaging materials, containers, and other articles of manufacture from hydraulically settable mixtures and highly inorganically filled compositions |
| EP0642918A1 (en) * | 1993-09-13 | 1995-03-15 | LANGENSTEIN & SCHEMANN GMBH | Device for controlling a press for making green bricks |
| EP0659527A1 (en) * | 1993-12-21 | 1995-06-28 | MASS S.p.A. | Method and plant for forming tiles of uniform compaction and thickness, and tiles obtained thereby |
| JPH09300333A (en) * | 1996-05-15 | 1997-11-25 | Inax Corp | Dry molding method for laminated tile and molding apparatus used therefor |
| US20030098137A1 (en) * | 2000-04-21 | 2003-05-29 | Kimikazu Kaneto | Die molding machine and pattern carrier |
| US20030194559A1 (en) * | 2002-04-12 | 2003-10-16 | Ding Gen Ming | Composition for construction material and its method of making and using the same |
| US20040045488A1 (en) * | 2002-06-18 | 2004-03-11 | Danzik Dennis M. | Molded table and its method of manufacture |
| CN203665674U (en) * | 2013-11-19 | 2014-06-25 | 河南海格尔高温材料有限公司 | Floating platform type die for refractory brick forming |
| CN205466663U (en) * | 2016-03-23 | 2016-08-17 | 淄博元和机电工程有限公司 | Cylindric is able to bear or endure firebrick hydraulic automatic tile press |
| CN106042165A (en) * | 2016-07-26 | 2016-10-26 | 福建海源自动化机械股份有限公司 | Manufacturing device for bricks permeable to water |
-
2022
- 2022-08-08 CN CN202210947120.7A patent/CN115366227B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB705377A (en) * | 1950-02-07 | 1954-03-10 | Morgan Crucible Co | Improvements in or relating to the manufacture of brick |
| FR2431361A1 (en) * | 1978-07-19 | 1980-02-15 | Demler Sa Ets | Concrete distributing drawer for precasting machine - contains floating frame seal which moves between overhead feed and mould below |
| CN1099711A (en) * | 1993-02-17 | 1995-03-08 | E.卡休基工业公司 | Methods and systems for manufacturing packaging materials, containers, and other articles of manufacture from hydraulically settable mixtures and highly inorganically filled compositions |
| EP0642918A1 (en) * | 1993-09-13 | 1995-03-15 | LANGENSTEIN & SCHEMANN GMBH | Device for controlling a press for making green bricks |
| EP0659527A1 (en) * | 1993-12-21 | 1995-06-28 | MASS S.p.A. | Method and plant for forming tiles of uniform compaction and thickness, and tiles obtained thereby |
| JPH09300333A (en) * | 1996-05-15 | 1997-11-25 | Inax Corp | Dry molding method for laminated tile and molding apparatus used therefor |
| US20030098137A1 (en) * | 2000-04-21 | 2003-05-29 | Kimikazu Kaneto | Die molding machine and pattern carrier |
| US20030194559A1 (en) * | 2002-04-12 | 2003-10-16 | Ding Gen Ming | Composition for construction material and its method of making and using the same |
| US20040045488A1 (en) * | 2002-06-18 | 2004-03-11 | Danzik Dennis M. | Molded table and its method of manufacture |
| CN203665674U (en) * | 2013-11-19 | 2014-06-25 | 河南海格尔高温材料有限公司 | Floating platform type die for refractory brick forming |
| CN205466663U (en) * | 2016-03-23 | 2016-08-17 | 淄博元和机电工程有限公司 | Cylindric is able to bear or endure firebrick hydraulic automatic tile press |
| CN106042165A (en) * | 2016-07-26 | 2016-10-26 | 福建海源自动化机械股份有限公司 | Manufacturing device for bricks permeable to water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117069426A (en) * | 2023-08-09 | 2023-11-17 | 浙江嘉吉石化工程有限公司 | Nanometer microporous heat-insulating plate and preparation method thereof |
| CN117069426B (en) * | 2023-08-09 | 2024-04-16 | 浙江嘉吉石化工程有限公司 | Nanometer microporous heat-insulating plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115366227B (en) | 2024-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011366131B2 (en) | Apparatuses, system and methods for forming pressed articles and pressed articles formed thereby | |
| CN115366227A (en) | Green brick forming process | |
| US3127459A (en) | Process and apparatus for making perforated bricks | |
| CN106378858A (en) | Equipment for pressing ceramic green bricks | |
| CN110091416A (en) | A kind of big specification brick compacting mold and pressure brick method | |
| CN213382092U (en) | Green brick forming machine for producing magnesia carbon bricks | |
| CN215038524U (en) | Quick forming die of ceramic tile secondary cloth secondary application of pressure | |
| CN102285138A (en) | Bidirectional pressure forming machine | |
| US3210450A (en) | Machine and method for making perforated brick | |
| CN201579861U (en) | Forming device of porcelain plate brick | |
| CN212312299U (en) | Mould is used in production of magnesium aluminate spinel brick | |
| CN112720798B (en) | Sagger dry-method pressing forming method and equipment and sagger | |
| CN109551612B (en) | Isostatic pressing forming method and mould for refractory sagger | |
| CN219006473U (en) | Cloth machine is used in production of foaming pottery | |
| CN113997386A (en) | Green brick forming equipment for environment-friendly bricks | |
| CN112743662A (en) | Compression molding method and equipment for burning-bearing sagger and burning-bearing sagger | |
| CN207310184U (en) | Refractory brick forming die | |
| CN213499920U (en) | Forming system for compacting solid loose materials | |
| CN104924443B (en) | Brick machine feeds and discharging structure | |
| CN2080450U (en) | Hydraulic moulding machine for making hollow brick by semidry method | |
| CN214491708U (en) | Double-pressurization type powerful press with lifting platform | |
| CN219855116U (en) | Forming device for activated alumina micropowder green bricks | |
| CN216782191U (en) | Steel die for pressing lithium battery cathode material saggar by secondary pressing forming process | |
| CN218255732U (en) | Sagger forming equipment | |
| CN220807905U (en) | Automatic brick press convenient for discharging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |