CN108789774B - Die assembly for stamping and forming sanitary ceramics and stamping system using die assembly - Google Patents

Die assembly for stamping and forming sanitary ceramics and stamping system using die assembly Download PDF

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Publication number
CN108789774B
CN108789774B CN201810612058.XA CN201810612058A CN108789774B CN 108789774 B CN108789774 B CN 108789774B CN 201810612058 A CN201810612058 A CN 201810612058A CN 108789774 B CN108789774 B CN 108789774B
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die
stamping
ceramic
cavity
blank
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CN108789774A (en
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霍富华
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Jiangxi Dongpeng Sanitary Ware Co Ltd
Foshan Peng Sanitary Ware Co Ltd
Guangdong Dongpeng Holdings Co Ltd
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Jiangxi Dongpeng Sanitary Ware Co Ltd
Foshan Peng Sanitary Ware Co Ltd
Guangdong Dongpeng Holdings 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/261—Moulds therefor
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

The invention discloses a die assembly for stamping and forming sanitary ceramics and a stamping system using the die assembly, comprising a middle die, a bottom die, a left die, a right die and a top die, wherein the middle die is provided with a die cavity, the bottom of the die cavity is covered with an elastic plastic part, and the die cavity of the middle die is used for bearing ceramic powder; the bottom die is provided with a lower stamping part, the left die is provided with a left stamping part, the right die is provided with a right stamping part, and the left die and the right die stamp; the top die is provided with an upper punch part, and the top die and the bottom die are punched. The stamping die assembly is used for stamping and forming the blank, and the density of the blank is much higher than that of the blank formed by grouting due to the increase of pressure, so that the deformation rate of the prepared finished product is reduced, and the compression resistance is improved.

Description

Die assembly for stamping and forming sanitary ceramics and stamping system using die assembly
Technical Field
The invention relates to the field of sanitary ceramic production, in particular to a die assembly for sanitary ceramic punch forming and a punching system using the die assembly.
Background
Sanitary ceramics refer to ceramic appliances for hygiene and cleaning of the toilet. At present, the sanitary ceramics are manufactured by adopting a slip casting process, namely ceramic slurry is injected into a prefabricated porous mould, the ceramic slurry is dehydrated and hardened by means of the water absorption capacity or external pressure action of the mould to prepare a blank, and then the blank is subjected to a glaze spraying and drying production process. In the grouting production process, the mold needs to be positioned and closed, conveyed to a grouting station and injected with ceramic slurry, after a blank body is formed, the mold needs to be conveyed to a mold opening station to open the mold to take out the blank body, and after the blank body is taken out, the mold needs to be cleaned and dried and the blank body needs to be subjected to glaze spraying and drying. Therefore, the existing sanitary ceramic production line has large occupied space, low production efficiency, large consumption of water and electricity, long time consumption in the grouting and drainage processes, and also generates a large amount of waste water and waste residues, thereby polluting the environment.
Disclosure of Invention
The invention aims to provide the die assembly for stamping and forming the sanitary ceramics and the stamping system using the die assembly, wherein the processes of grouting, draining, blank drying and the like are omitted, the production line is shortened, the deformation rate of a finished product is reduced, the compression resistance is improved, a large amount of water and electricity are avoided being consumed, and the die assembly is environment-friendly and energy-saving.
In order to achieve the purpose, the invention adopts the following technical scheme:
a die assembly for stamping and forming sanitary ceramics comprises a middle die, a bottom die, a left die, a right die and a top die, wherein the middle die is provided with a die cavity, the bottom of the die cavity is covered with an elastic plastic part, and the die cavity of the middle die is used for bearing ceramic powder;
the bottom die is provided with a lower stamping part, and the bottom die is used for aligning the lower stamping part to the position right below the die cavity of the middle die and then moves upwards until the lower stamping part is completely attached to the elastic molding part of the middle die, so that the ceramic powder is molded into a blank;
the left die is provided with a left stamping part, the right die is provided with a right stamping part, the left stamping part and the right stamping part are used for covering the left die on the left side of the middle die, and simultaneously covering the right die on the right side of the middle die, so that the left die and the right die are completely attached to the blank, and then the left die and the right die are stamped;
the top die is provided with an upper stamping part, the upper stamping part is used for completely attaching the upper stamping part and the blank body, so that the blank body is clamped between the middle die and the top die, and then the top die and the bottom die are stamped.
Preferably, the horizontal projected area of the lower punch is not larger than the horizontal projected area of the die cavity;
the shape of the left punching part is the same as that of the left half part of the upper punching part, and the shape of the right punching part is the same as that of the right half part of the upper punching part.
Preferably, the plastic molding piece further comprises a shaping column fixed on the upper surface of the elastic molding piece.
Preferably, the upper surface of the upper stamping part is provided with a shaping cover, and the shaping cover wraps the shaping column during stamping.
Preferably, the upper surface of the left punching part is provided with a first sizing semi-ring, the upper surface of the right punching part is provided with a second sizing semi-ring, and the first sizing semi-ring and the second sizing semi-ring are relatively attached to surround the sizing column during punching.
Preferably, the elastic plastic part is a silicon film, and the thickness of the mold cavity is 20-60 mm;
the middle die, the shaping column, the bottom die, the left die, the right die and the top die are all made of steel.
Preferably, the stamping pressure of the left part die and the right part die is 1-7 tons, and the stamping pressure of the top die and the bottom die is 5-15 tons.
Preferably, the stamping system of the die assembly for ceramic sanitary ware stamping forming is used, the bottom die is arranged below the middle die, the lower stamping part of the bottom die is aligned with the die cavity of the middle die, and the bottom die is driven by the bottom punch to move up and down;
the top die is arranged above the middle die, an upper punch part of the top die is aligned with the die cavity, and the top die is driven by a top punch to move up and down;
the left part die and the right part die are oppositely arranged on two sides of the middle part die, the left part die is driven by the left part punch to move left and right, and the right part die is driven by the right part punch to move left and right.
Preferably, the powder pushing device further comprises a powder pushing member, the powder pushing member is provided with a powder containing through hole, and the shape and the thickness of the powder containing through hole and the shape and the thickness of the die cavity are the same;
during pushing, the powder pushing part is borne on the pushing power part and is driven by the pushing power part to move to the middle die until the powder containing through hole is overlapped with the die cavity.
The die assembly for sanitary ceramic punch forming is used for manufacturing a ceramic wash basin and a bathtub, is different from the existing grouting die assembly for sanitary ceramic grouting forming, and bears ceramic powder and non-ceramic slurry in the stamping die assembly. The blank is punched and formed by the punching die assembly, and the density of the blank is much higher than that of the blank formed by grouting due to the increased pressure, so that the deformation rate of the finished product is reduced, the compression resistance is improved, the deformation rate of the finished product is less than or equal to 5 percent, and the compression resistance is more than or equal to 45 Mpa.
The stamping forming system realizes the automation of sanitary ceramic stamping forming, each die is respectively provided with a stamping device to be independently driven, the control is flexible, and each die is aligned to the blank body in four directions, namely the upper direction, the lower direction, the left direction and the right direction, so that the blank body cannot be formed due to offset dislocation. Compared with the existing grouting forming system, the process steps of grouting, draining, blank drying and the like are omitted, the production line is reduced, the occupied space for producing sanitary ceramics with the same scale is greatly reduced, the production efficiency is improved by dozens of or hundreds of times, the consumption of a large amount of water and electricity is avoided, waste water and waste residues are not generated, and the environment is protected and energy is saved.
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 schematic diagram of a stamping die assembly according to one embodiment of the invention;
FIG. 2 is a schematic view of a powder pusher according to one embodiment of the present invention;
FIG. 3 is an illustration of the bottom mold position for one embodiment of the present invention;
FIG. 4 is a bottom mold operating condition diagram of one embodiment of the present invention;
FIG. 5 is a side-to-side mold clamping illustration of one embodiment of the present invention;
FIG. 6 is a left and right press illustration of one embodiment of the present invention;
FIG. 7 is an illustration of upper and lower clamp configurations in accordance with one embodiment of the present invention;
FIG. 8 is a top and bottom punch illustration of one embodiment of the present invention;
fig. 9 is a schematic view of a structure of a press-formed green body according to one embodiment of the present invention.
Wherein: a middle mold 1; a mold cavity 11; an elastic profile 12; a bottom mold 2; a lower punch 21; a left part mold 3; a right mold 4; a top mold 5; a left punch portion 31; a right punched portion 41; an upper punch 51; a blank 7; a sizing column 13; a mold cover 511; a first sizing half ring 311; a second sizing half-ring 411; a water outlet pipe port 71; a powder pushing member 6; a powder receiving through hole 61.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The die assembly for stamping and forming sanitary ceramics of the embodiment comprises a middle die 1, a bottom die 2, a left die 3, a right die 4 and a top die 5, as shown in fig. 1, wherein the middle die 1 is provided with a die cavity 11, the bottom of the die cavity 11 is covered with an elastic molding part 12, and the die cavity 11 of the middle die 1 is used for bearing ceramic powder as shown in fig. 2;
the bottom die 2 is provided with a lower punch 21, the bottom die 2 is used for aligning the lower punch 21 to the right lower part of the die cavity 11 of the middle die 1 as shown in figure 3, and then moves upwards until the lower punch 21 and the elastic molded part 12 of the middle die 1 are completely attached, so that the ceramic powder is molded into a green body 7 as shown in figure 4;
the left die 3 is provided with a left stamping part 31, the right die 4 is provided with a right stamping part 41, the left stamping part 31 and the right stamping part 41 are used for covering the left die 3 on the left side of the middle die 1 and simultaneously covering the right die 4 on the right side of the middle die 1, as shown in fig. 5, so that the left die 3 and the right die 4 are completely attached to the blank 7, and then the left die 3 and the right die 4 are stamped, as shown in fig. 6;
the top die 5 is provided with an upper punch 51, the upper punch 51 is used for completely attaching the upper punch 51 and the blank 7, so that the blank 7 is clamped between the middle die 1 and the top die 5, and then the top die 5 and the bottom die 2 perform stamping, as shown in fig. 7 and 8.
The die assembly for sanitary ceramic punch forming is used for manufacturing a ceramic wash basin and a bathtub, is different from the existing grouting die assembly for sanitary ceramic grouting forming, and bears ceramic powder and non-ceramic slurry in the stamping die assembly. The ceramic powder is spread over the whole die cavity 11, the bottom of the die cavity 11 is covered with an elastic molded part 12, when the bottom die 2 moves upwards, the elastic molded part 12 is upwards protruded under the supporting action of the lower punching part 21, the elastic molded part 12 can be elastically deformed into the shape of the lower punching part 21, so that the ceramic powder covered on the elastic molded part 12 is molded into a blank 7, and the blank 7 is the same as the lower punching part 21 in shape.
Because the blank 7 is three-dimensional, 5 faces still need to be shaped. The blank 7 is still piled up by ceramic powder, which is different from slurry or mud block, the ceramic powder is loose, if only the upper and lower directions are punched, or only the left and right directions are punched, the thickness of the prepared finished product in all directions is uneven, namely, the powder is less in some places and more in some places, the punched finished product is too thin in some places and too thick in some places, and the finished product can not be completely attached to a punching die during punching. Therefore, two sets of stamping dies are needed to be arranged, namely the left die 3 and the right die 4 form a set, and the blank 7 is stamped in the left-right direction; the bottom die 2 and the top die 5 form a group, and the blank 7 is punched in the vertical direction.
The blank body 7 is punched and formed, and the density of the blank body 7 is much larger than that of the blank body 7 formed by grouting due to the increased pressure, so that the deformation rate of the finished product prepared by the process is reduced, the compression resistance is improved, the deformation rate of the finished product is less than or equal to 5 percent, and the compression resistance is more than or equal to 45 Mpa. Compared with the existing grouting forming process, the process for producing sanitary ceramics saves the processes of grouting, draining, blank drying and the like, reduces the production line, greatly reduces the occupied space for producing sanitary ceramics with the same scale, improves the production efficiency by dozens of or hundreds of times, avoids consuming a large amount of water and electricity, does not produce waste water and waste residue, and is environment-friendly and energy-saving.
It should be noted that in the first step, the ceramic powder is powder and is not pre-pressed into blocks, the ceramic powder is loaded on the powder containing through hole 61 of the powder pushing member 6, a movable bottom plate is arranged at the bottom of the powder containing through hole 61, when the ceramic powder is pushed to the middle mold 1, the powder pushing member 6 moves forwards while pulling the movable bottom plate open, the ceramic powder naturally falls into the mold cavity 11, and after the ceramic powder is fully spread, the redundant ceramic powder is taken away when the powder pushing member 6 moves backwards; in the second step, the middle die 1 is only provided with the elastic plastic part 12 protruding upwards to change the shape of the lower punch part 21, and the other parts of the middle die 1 are not changed, so that the ceramic powder is not scattered much.
Preferably, the left mold 3 and the right mold 4 are used for stamping, so that the shape and thickness of 4 surfaces of the blank 7, namely the front surface, the rear surface, the left surface and the right surface, can be fixed by using less pressure, and then the top mold 5 and the bottom mold 2 are used for stamping, so that greater pressure is applied to the blank 7 from top to bottom, and the thickness of the whole blank is uniform. Stamping in the left-right direction and then stamping in the up-down direction are carried out, so that energy consumption is saved, for example, the stamping pressure in the left-right direction is 4 tons, and the stamping pressure in the up-down direction is 9 tons; on the contrary, the pressing force in the up-down direction is large, and the pressing force in the left-right direction is larger, for example, the pressing force in the up-down direction is 9 tons, and the pressing force in the left-right direction is 13 tons, which results in large energy consumption.
The upward moving speed of the bottom die is 1-6 m/s, the speed is moderate, and the situation that ceramic powder is scattered when the speed is too high is avoided.
The ceramic powder is a raw material formula of the existing sanitary ceramics, for example, according to the mass parts, the formula of the ceramic powder comprises 60-85 parts of SiO 212 to 27 parts of Al2O30.1 to 1 part of Fe2O30.3-1.5 parts of CaO and 0.5-3 parts of K2O/Na2O; the ceramic powder does not need to be poured into water to form slurry, but the water content of the ceramic powder is controlled to be 1% -5%, so that the ceramic powder is prevented from being too much scattered when the ceramic powder is molded into a blank body 7; the ceramic powder can also be added with 0.1-0.4 part of binder to achieve the effect, wherein the binder only needs to be added in a small amount, the binder can be dextrin, polyvinyl alcohol, water-soluble binder polyvinyl alcohol, carboxymethyl cellulose, polystyrene and the like, and the ceramic powder is barren material, so that the addition of a proper amount of binder can improve the forming performance of a blank and the strength of the blank, but the addition of too much binder can improve the forming performance of the blank and the strength of the blankThe spray granulation powder is formed into hard dry powder particles to prevent the ceramic particles from deforming in the pressing process, and the ceramic powder added with the binder is still powdery and cannot be bonded into blocks. In the slip casting process, the water content of the ceramic slurry is over 50 percent in general, and the water content of the ceramic slurry is 30 to 50 percent when a water reducing agent is added.
The ceramic powder is prepared by a spray drying method, the fluidity and the bulk density of the ceramic powder are generally better than those of the ceramic powder prepared by the conventional process method, and the bulk density and the fluidity of the ceramic powder obtained by the spray drying method under the conditions of different water contents are determined by referring to the detection standard of American ASTM (American society for testing and materials) on the fluidity and the bulk density of the metal powder as shown in the following table 1. The water content of the ceramic powder prepared by the spray drying method is generally controlled to be 1-5%, the fluidity of the ceramic powder meets the requirement of punch forming, and the sprinkling of the ceramic powder when a mould moves can be reduced by properly increasing the water content of the ceramic powder.
Figure GDA0002214512210000071
TABLE 1
Preferably, the horizontal projected area of the lower punch 21 is not larger than the horizontal projected area of the die cavity 11;
the left punched part 31 has the same shape as the left half of the upper punch 51, and the right punched part 41 has the same shape as the right half of the upper punch 51. The horizontal projection area of the lower punch 21 is not larger than that of the die cavity 11, so that the lower punch 21 can be completely covered by the elastic molding piece 12, and the ceramic powder is molded into the blank 7 with the same shape as the lower punch 21. The left and right molds 3 and 4 have the same shape as the upper punch 51 in the clamped state, and punch the shape and thickness of 4 surfaces of the fixed blank 7, i.e., the front, rear, left, and right surfaces.
Preferably, as shown in fig. 1, it also comprises a shaped post 13, said shaped post 13 being fixed to the upper surface of the elastic profile 12. The shaping column 13 is used for molding the water outlet opening 71 on the blank 7, and as shown in fig. 4 and 9, the shaping column 13 protrudes upwards along with the elastic molding piece 12, so that the blank 7 forms an embryonic shape of the water outlet opening 71.
Preferably, as shown in fig. 1, the upper punch 51 is provided with a shape cover 511 on the upper surface, and the shape cover 511 wraps the shape post 13 during punching, as shown in fig. 8. When the upper punch part 51 of the top die 5 is completely attached to the blank 7, the shaping cover 511 wraps the shaping column 13, the water pipe opening 71 is clamped in the annular sealing cavity formed by the shaping column 13 and the shaping cover 511, and the water pipe opening 71 is clamped in the annular sealing cavity formed by the shaping column 13 and the shaping cover 511, so as to fix the shape and thickness of the water pipe opening 71.
Preferably, as shown in fig. 1, the upper surface of the left punched part 31 is provided with a first shaped half ring 311, the upper surface of the right punched part 41 is provided with a second shaped half ring 411, and the first shaped half ring 311 and the second shaped half ring 411 are oppositely attached to surround the shaped column 13 during punching, as shown in fig. 6.
When the left mold 3 and the right mold 4 are completely attached to the blank 7, the first sizing half ring 311 and the second sizing half ring 411 are attached oppositely to surround the sizing column 13, and the water pipe opening 71 is clamped in the annular open cavity formed by the sizing column 13, the first sizing half ring 311 and the second sizing half ring 411 to fix the shape and the thickness of the water pipe opening 71. The water pipe mouth 71 formed by twice punching is greatly higher in density than the water pipe mouth 71 formed by grouting due to the increased pressure, so that the water pipe mouth 71 prepared by the process is uniform in thickness, the deformation rate is reduced, the compression resistance is improved, the deformation rate of the water pipe mouth 71 is less than or equal to 5%, and the compression resistance is more than or equal to 45 Mpa.
Preferably, the elastic plastic part 12 is a silicone film, and the thickness of the mold cavity 11 is 20-60 mm;
the middle die 1, the shaping column 13, the bottom die 2, the left die 3, the right die 4 and the top die 5 are all made of steel. The elastic plastic part 12 adopts a silicone film with a smooth surface, has high elasticity, good stretching and tearing resistance and good resilience, does not deform and age after long-term use, has a trace electrostatic adsorption condition, and is very suitable for molding ceramic powder. The thickness of the die cavity 11 is 20-60 mm, so that the thickness of the ceramic powder is 20-60 mm when the ceramic powder is placed in the die cavity 11 of the middle die 1; the thickness of the punch forming finished product is 3-18 mm, namely, the ceramic powder with the thickness of 20-60 mm is punched into the finished product with the thickness of 3-18 mm, so that the density of the finished product is high, the deformation rate of the finished product is reduced (the deformation rate of the finished product in the slip casting process is more than 5%), and the compression resistance is improved (the compression resistance of the slip casting process is less than 45 Mpa). The middle die 1, the bottom die 2, the left die 3, the right die 4 and the top die 5 are all made of steel, so that the die has high strength, can bear huge stamping pressure and has long service life.
Preferably, the stamping pressure of the left die 3 and the right die 4 is 1-7 tons, and the stamping pressure of the top die 5 and the bottom die 2 is 5-15 tons. The left part die 3 and the right part die 4 are firstly used for stamping, so that the shape and the thickness of 4 surfaces of the blank 7, namely the front surface, the rear surface, the left surface and the right surface, can be fixed by less pressure, then the top die 5 and the bottom die 2 are used for stamping, and larger pressure is applied to the blank 7 from top to bottom, so that the uniform thickness of the whole blank is ensured. Stamping in the left-right direction is firstly carried out, and then stamping in the up-down direction is carried out, so that energy consumption is saved.
The left-right direction punching and the up-down direction punching adopt a three-stage punching method of light pressing, double pressing and three pressing, the green body 7 is pre-shaped during light pressing, the green body 7 is completely shaped during heavy pressing, and the green body 7 is reinforced and formed during pressing, so that the density of the green body 7 is greatly improved; because the ceramic powder is loose, the ceramic powder is not easy to form if the ceramic powder is directly pressed, and the density of a finished product is not uniform. For example, the left mold 3 and the right mold 4 are first stamped for 1 to 10 seconds at a stamping pressure of 1 to 2.5 tons, then stamped for 1 to 10 seconds at a stamping pressure of 2.6 to 4.5 tons, and finally stamped for 1 to 10 seconds at a stamping pressure of 4.6 to 7 tons; the top die 5 and the bottom die 2 are firstly stamped for 1-10 seconds at a stamping pressure of 5-9 tons, then stamped for 1-10 seconds at a stamping pressure of 9.1-12 tons, and finally stamped for 1-10 seconds at a stamping pressure of 12.1-15 tons.
Preferably, with the punching system of the die assembly for ceramic sanitary ware punch forming, the bottom die 2 is arranged below the middle die 1, the lower punch 21 of the bottom die 2 is aligned with the die cavity 11 of the middle die 1, and the bottom die 2 is driven by the bottom punch to move up and down, as shown in fig. 3;
the top die 5 is arranged above the middle die 1, as shown in fig. 7, the upper punch 51 of the top die 5 is aligned with the die cavity 11, and the top die 5 is driven by the top punch to move up and down;
the left mold 3 and the right mold 4 are oppositely arranged on two sides of the middle mold 1, as shown in fig. 5, the left mold 3 is driven by the left punch to move left and right, and the right mold 4 is driven by the right punch to move left and right.
The stamping forming system realizes the automation of sanitary ceramic stamping forming, each die is respectively provided with a stamping device to be independently driven, the control is flexible, and each die is aligned to the blank 7 in four directions, namely the upper direction, the lower direction, the left direction and the right direction, so that the blank 7 cannot be formed due to offset dislocation.
The bottom punch drives the bottom die 2 to move upwards until the lower punch 21 of the bottom die 2 and the elastic plastic part 12 of the middle die 1 are completely attached;
the left punch drives the left die 3 to move towards the middle die 1, meanwhile, the right punch drives the right die 4 to move towards the middle die 1 until the left die 3 and the right die 4 are tightly attached, and then stamping in the left-right direction is carried out;
the left part punch drives the left part die 3 to be far away from the middle die 1, and the right part punch drives the right part die 4 to be far away from the middle die 1, so that the die separation of the left part die 3 and the right part die 4 is realized;
and then the top punch drives the top die 5 to move downwards until the top die 5 and the middle die 1 are completely attached, then the top die 5 and the bottom die 2 perform stamping, and finally the top punch drives the top die 5 to move upwards, so that the top die 5 and the bottom die 2 are separated, and a finished product is prepared.
Preferably, as shown in fig. 2, the powder pushing device further comprises a powder pushing member 6, wherein the powder pushing member 6 is provided with a powder containing through hole 61, and the powder containing through hole 61 and the mold cavity 11 have the same shape and thickness;
during pushing, the powder pushing member 6 is supported on the pushing power member, and the powder pushing member 6 is driven by the pushing power member to move onto the middle mold 1 until the powder containing through hole 61 and the mold cavity 11 are overlapped.
The automatic ceramic powder pushing device is characterized in that the ceramic powder pushing part 6 achieves automatic ceramic powder pushing, ceramic powder is borne on the powder containing through hole 61 of the ceramic powder pushing part 6, a movable bottom plate is arranged at the bottom of the powder containing through hole 61 and driven by a pushing power part, the ceramic powder pushing part 6 moves to the middle die 1, then the powder pushing part 6 moves forwards and pulls open the movable bottom plate, the ceramic powder naturally falls into the die cavity 11, and redundant ceramic powder after being fully paved is taken away when the powder pushing part 6 moves backwards.
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 (9)

1. The utility model provides a mould subassembly for sanitary ceramic stamping forming which characterized in that: the ceramic powder forming die comprises a middle die, a bottom die, a left die, a right die and a top die, wherein the middle die is provided with a die cavity, the bottom of the die cavity is covered with an elastic plastic part, and the die cavity of the middle die is used for bearing ceramic powder;
the bottom die is provided with a lower stamping part, and the bottom die is used for aligning the lower stamping part to the position right below the die cavity of the middle die and then moves upwards until the lower stamping part is completely attached to the elastic molding part of the middle die, so that the ceramic powder is molded into a blank;
the left die is provided with a left stamping part, the right die is provided with a right stamping part, the left stamping part and the right stamping part are used for covering the left die on the left side of the middle die, and simultaneously covering the right die on the right side of the middle die, so that the left die and the right die are completely attached to the blank, and then the left die and the right die are stamped;
the top die is provided with an upper stamping part which is completely attached to the blank body, so that the blank body is clamped between the middle die and the top die, and then the top die and the bottom die are stamped.
2. The die assembly for ceramic sanitary ware stamping forming according to claim 1, wherein: the horizontal projection area of the lower stamping part is not larger than that of the die cavity;
the shape of the left punching part is the same as that of the left half part of the upper punching part, and the shape of the right punching part is the same as that of the right half part of the upper punching part.
3. The die assembly for ceramic sanitary ware stamping forming according to claim 1, wherein: the plastic part fixing device further comprises a shaping column, and the shaping column is fixed on the upper surface of the elastic plastic part.
4. The die assembly for ceramic sanitary ware stamping forming according to claim 3, wherein: and the upper surface of the upper stamping part is provided with a shaping cover, and the shaping cover wraps the shaping column during stamping.
5. The die assembly for ceramic sanitary ware stamping forming according to claim 3, wherein: the upper surface of left side punching press portion is equipped with first design semi-ring, the upper surface of right side punching press portion is equipped with second design semi-ring, during the punching press first design semi-ring and the laminating of second design semi-ring relatively will the design post surrounds.
6. The die assembly for ceramic sanitary ware stamping forming according to claim 3, wherein:
the elastic plastic piece is a silicon film, and the thickness of the mold cavity is 20-60 mm;
the middle die, the shaping column, the bottom die, the left die, the right die and the top die are all made of steel.
7. The die assembly for ceramic sanitary ware stamping forming according to claim 1, wherein: stamping pressure of the left part die and the right part die is 1-7 tons, and stamping pressure of the top die and the bottom die is 5-15 tons.
8. The punching system using the die assembly for ceramic sanitary ware press molding according to claim 1, characterized in that: the bottom die is arranged below the middle die, a lower stamping part of the bottom die is aligned with a die cavity of the middle die, and the bottom die is driven by a bottom punch to move up and down;
the top die is arranged above the middle die, an upper punch part of the top die is aligned with the die cavity, and the top die is driven by a top punch to move up and down;
the left part die and the right part die are oppositely arranged on two sides of the middle part die, the left part die is driven by the left part punch to move left and right, and the right part die is driven by the right part punch to move left and right.
9. The stamping system for sanitary ceramic stamping forming die assemblies as defined in claim 8, wherein:
the powder pushing part is provided with a powder containing through hole, and the shape and the thickness of the powder containing through hole and the shape and the thickness of the die cavity are the same;
during pushing, the powder pushing part is borne on the pushing power part and is driven by the pushing power part to move to the middle die until the powder containing through hole is overlapped with the die cavity.
CN201810612058.XA 2018-06-14 2018-06-14 Die assembly for stamping and forming sanitary ceramics and stamping system using die assembly Active CN108789774B (en)

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DE102006021194A1 (en) * 2006-05-06 2007-11-08 Dorst Technologies Gmbh & Co. Kg Die casting arrangement for casting ceramic toilets and toilet attachments comprises a molded part arranged vertically to the casting chamber
CN202378152U (en) * 2011-11-29 2012-08-15 重庆四维卫浴(集团)有限公司 Special mould for molding ceramic sanitary ware blank by vertical compression
CN103963138A (en) * 2013-01-31 2014-08-06 咸阳陶瓷研究设计院 Method for forming sanitary ceramics by three-dimensional printing
CN105777133B (en) * 2016-04-29 2018-12-14 浙江东新新材料科技有限公司 The preparation method and particular manufacturing craft of the whole shellproof plate of the more curved surfaces of disposal molding
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