CN111633782A - High-pressure slip casting production method for sanitary ware and sanitary ware - Google Patents
High-pressure slip casting production method for sanitary ware and sanitary ware Download PDFInfo
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- CN111633782A CN111633782A CN202010437612.2A CN202010437612A CN111633782A CN 111633782 A CN111633782 A CN 111633782A CN 202010437612 A CN202010437612 A CN 202010437612A CN 111633782 A CN111633782 A CN 111633782A
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- die
- shell
- seat ring
- blank
- sanitary ware
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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
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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
- B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
-
- 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
- B28B7/12—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article by fluid pressure, e.g. acting through flexible wall parts or linings of the moulds
Abstract
The invention discloses a sanitary ware high-pressure slip casting production method and a sanitary ware, comprising the following steps: forming a blank body: starting a locking oil cylinder, enabling a lower shell die to be matched with the die upwards through an L-shaped support at the bottom end of the lower shell die, enabling the locking oil cylinder to drive an upper shell die, a left shell die and a right shell die of a shell forming die and an upper seat ring die, a left seat ring die and a right seat ring die of the seat ring forming die to be matched with the middle of a rack and locked, then respectively injecting slurry into a cavity of the shell forming die and a cavity of the seat ring forming die to form a shell green body and a seat ring green body, and opening the die to take out the; and bonding the upper surface of the shell blank with the lower surface of the seat ring blank to obtain the sanitary ware. Through the bonding surface that the slope set up between shell body and seat circle body, adopt the chamfer design when observing from the outside that the bonding seam of sanitary wares is not obvious, both bond the seam and be close to the outside at bonding surface top more when carrying out the bonding, avoided the bonding seam to appear uneven phenomenon after firing.
Description
Technical Field
The invention relates to the technical field of sanitary ware forming, in particular to a sanitary ware high-pressure slip casting production method and a sanitary ware.
Background
The current market mainstream toilet bowl is divided into sitting type and squatting type, the squatting type toilet bowl occupies a small area, but experience during use is not good, the phenomenon that two legs are tingled easily appears when the toilet time is longer, and the old and the disabled who are inconvenient to both feet use also very inconveniently, and sitting type sanitary ware is owing to can directly sit on sanitary ware, liberates two legs, and the use feels the preferred, by extensive use in the house life, and most public places also have more the adoption. The ceramic material has the advantages of easy cleaning, larger hardness and difficult water seepage, the ceramic sanitary ware is most used in the preparation material of the sanitary ware, and the existing ceramic sanitary ware generally adopts a through-grouting forming process for manufacturing the sanitary ware with a complex structure, and redundant water is discharged after slurry is injected into a mould to obtain a formed sanitary ware blank; the molding technology is easy to master and the production cost is low.
The bonding surfaces of a shell blank and a seat ring blank which are usually prepared in the existing sanitary ware production are planes, the splicing traces are very obvious after bonding, and uneven bonding seams are formed on the surface of the sanitary ware after sintering, so that the quality of products is reduced. Because the moisture in the thick liquids need to be injected into compressed air and extruded when current sanitary wares shaping, there is the backpressure in the inside compressed gas of mould when directly pulling the mould open, and the backpressure process can cause certain degree of damage to the sanitary wares body that has already been shaped, destroys the integrality of sanitary wares body.
Disclosure of Invention
The invention mainly aims to provide a sanitary ware high-pressure slip casting production method and the sanitary ware, and aims to solve the technical problems that a blank is easy to damage in the process of opening a die and an uneven bonding seam exists on the surface of the prepared sanitary ware in the existing sanitary ware production method.
In order to achieve the purpose, the invention provides a high-pressure slip casting production method of sanitary ware, which comprises the following steps:
forming a blank body: starting a locking oil cylinder, enabling a lower shell die to be matched with the die upwards through an L-shaped support at the bottom end of the lower shell die, enabling the locking oil cylinder to drive an upper shell die, a left shell die and a right shell die of a shell forming die and an upper seat ring die, a left seat ring die and a right seat ring die of the seat ring forming die to be matched with the middle of a rack and locked, then respectively injecting slurry into a cavity of the shell forming die and a cavity of the seat ring forming die to form a shell blank body and a seat ring blank body, and opening the die to take out the shell blank body and the;
bonding: bonding the upper surface of the shell blank body and the lower surface of the seat ring blank body to obtain the sanitary ware;
the bonding surface of the shell blank and the seat ring blank is an inclined plane, and the included angle alpha between the inclined plane and the horizontal plane is 15-30 degrees.
Preferably, the step of opening the mold comprises an initial mold opening and a complete mold opening, and the initial mold opening comprises the following steps: the shell upper die ejects the shell left die and the shell right die out through a first air cylinder to realize initial die opening, and the intervals between the shell left die, the shell right die and the shell upper die are all 3-5 cm; and the seat ring upper die ejects the seat ring left die and the seat ring right die out through a second air cylinder to realize preliminary die sinking, and the space between the seat ring left die and the seat ring right die and the space between the seat ring upper die and the seat ring right die are all 3-5 cm.
Preferably, the fully opening the mold comprises the following steps: the frame drives the shell left die to continuously move through a trailer, the shell left die drives the shell upper die to continuously move through a connecting rod, the shell lower die downwards moves along the shell upper die through a first driving piece, and finally compressed gas is introduced into the shell upper die to realize complete die opening with a shell green body; the frame drives the seat ring left die to continuously move through the trailer, the seat ring left die drives the seat ring upper die to continuously move through the connecting rod, and finally compressed gas is introduced into the seat ring upper die to realize complete die opening with the seat ring green body.
Preferably, the step of injecting the slurry into the housing-forming mold cavity and the seat-forming mold cavity respectively to form the housing blank and the seat blank includes: and slurry is injected into the shell forming die cavity and the seat ring forming die cavity and is also injected into the pressure cylinder, a slurry valve of the pressure cylinder is closed when the liquid level of the slurry in the pressure cylinder reaches a liquid level detector, the slurry injection is stopped when the shell forming die cavity and the seat ring forming die cavity are full, the slurry valve of the pressure cylinder is opened, and 0.9-1.5MPa of compressed air is introduced into the pressure cylinder to extrude and form the moisture of the slurry in the shell forming die cavity and the seat ring forming die cavity.
Preferably, the step of "green body forming" further comprises the step of slurry discharging: and opening a slurry return port at the bottom end of the pressure cylinder after the pressure of the pressure cylinder is released, and discharging the residual slurry in the shell forming die cavity and the seat ring forming die cavity through the slurry return port.
Preferably, the time for introducing the compressed air into the pressure cylinder is 15-25 min.
Preferably, the step of "blank forming" further comprises a blank consolidation step: and closing the grout return port, and introducing 0.1-0.4Mpa of compressed air into the shell forming die cavity and the seat ring forming die cavity.
Preferably, the time for introducing the compressed air into the pressure cylinder is 3-6 min.
In addition, the invention also provides the sanitary ware prepared by the high-pressure slip casting production method of the sanitary ware, which comprises the shell blank and the seat ring blank, wherein the upper surface of the shell blank is adhered to the lower surface of the seat ring blank.
The sanitary ware high-pressure slip casting production method and the sanitary ware have the following beneficial effects:
1. through the bonding surface that the slope set up between shell body and seat circle body, sanitary wares's bonding seam is not obvious when adopting the chamfer design to follow outside observation, and both bonding seams are close to the outside at bonding surface top more when bonding, have avoided bonding seam uneven phenomenon to appear in subsequent sanitary wares firing process.
2. The shell forming die and the seat ring forming die are fixed to the frame in a hoisting mode, the upper die does not need to be provided with a matched lifting device to be matched with the lower die to be matched, the overall structure is simpler, and the die filling is more convenient.
3. The die sinking is realized by sequentially carrying out preliminary die sinking and complete die sinking, and the compressed gas in the shell forming die and the seat ring forming die is discharged, so that the formed shell green body and the seat ring green body are prevented from being damaged by back pressure generated by the compressed gas, and the product quality is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic front view of an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a schematic side view of an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a housing forming mold according to the present invention;
FIG. 7 is a schematic view of the seat ring forming mold of the present invention;
FIG. 8 is a schematic view of the sanitary ware of the present invention before it is bonded;
FIG. 9 is a schematic view of the bonded sanitary ware of the present invention;
FIG. 10 is a half-sectional view of the housing blank of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 at C;
FIG. 12 is a schematic structural view of a seat ring blank of the present invention;
fig. 13 is a partial enlarged view of fig. 12 at D.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Shell blank | 11 | Shell forming die |
| 111 | Shell upper die | 1111 | |
| 112 | Lower die of shell | 1121 | L- |
| 1122 | |
113 | Shell |
| 114 | Shell |
2 | Seat ring blank |
| 21 | Seat ring forming die | 211 | Seat ring upper die |
| 2111 | The |
212 | Seat ring left die |
| 213 | Seat ring right die | 3 | |
| 4 | |
41 | |
| 42 | |
5 | |
| 51 | |
52 | Pressure |
| 53 | Slurry return port | 6 | |
| 7 | Limiting |
8 | Limiting groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications such as up, down, left, right, front, and rear … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, motion, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a high-pressure slip casting production method for sanitary ware. The sanitary ware high-pressure slip casting production method is used for production and manufacturing of sanitary ware, compared with the common slip casting, the hardness of a blank manufactured is higher, the production efficiency is improved, the shell forming die 11 and the seat ring forming die 21 are arranged in a hoisting mode, the automation degree of the dies is higher, the structure is simpler, no obvious uneven connecting seam exists at the bonding position of the finally manufactured sanitary ware seat ring and the blank, and the quality is better.
In an embodiment of the present invention, as shown in fig. 1 to 13, the method for producing sanitary ware by high-pressure slip casting includes the following steps:
forming a blank body: starting a locking oil cylinder 3, enabling a lower shell die 112 to be matched with the die upwards through an L-shaped support 1121 at the bottom end of the lower shell die, enabling the locking oil cylinder 3 to drive an upper shell die 111, a left shell die 113 and a right shell die 114 of a shell forming die 11 and an upper seat ring die 211, a left seat ring die 212 and a right seat ring die 213 of the seat ring forming die 21 to be matched with the middle of a frame 4 and locked, then respectively injecting slurry into a cavity of the shell forming die 11 and a cavity of the seat ring forming die 21 to form a shell blank 1 and a seat ring blank 2, and opening the die to take out the shell blank 1 and the seat ring blank 2;
bonding: bonding the upper surface of the shell blank 1 and the lower surface of the seat ring blank 2 to obtain the sanitary ware;
the bonding surface of the shell blank body 1 and the seat ring blank body 2 is an inclined plane, and the included angle alpha between the inclined plane and the horizontal plane is 15-30 degrees.
Specifically, the production of the sanitary ware comprises the manufacture of a shell and a seat ring, when a shell blank body 1 is formed in a shell forming die 11, a seat ring blank body 2 is also fixedly formed in the seat ring forming die 21, the shell blank body 1 and the seat ring blank body 2 after die sinking forming are transmitted together mechanically or manually, the upper surface of the shell blank body 1 and the lower surface of the seat ring blank body 2 are bonded and fixed by slurry to obtain the final sanitary ware blank body, the operation steps are simpler, wherein the bonding surfaces of the shell blank body 1 and the seat ring blank body 2 are inclined planes, the bonding seam of the sanitary ware is not obvious when the design of chamfering is observed from the outside, the bonding seam is closer to the outermost side of the top of the bonding surface when the bonding seam is bonded, the phenomenon that the bonding seam is uneven in the subsequent firing process of the sanitary ware is avoided, the angle alpha is not too large, and when the alpha is larger than 30 degrees, the bonding effect of the seat ring blank 2 and the shell blank 1 can cause the phenomenon of unstable bonding due to overlarge inclined plane, thereby reducing the product quality of the sanitary ware.
The shell forming die 11 and the seat ring forming die 21 are fixed with the frame 4 in a hoisting mode, a matched lifting device for the upper die is not needed for die assembly, the whole structure is simpler, and the die assembly is more convenient during die assembly, because the shell upper die 111, the shell left die 113, the shell right die 114, the seat ring upper die 211, the seat ring left die 212 and the seat ring right die 213 are all connected with the frame 4 in a sliding way, the shell upper die 111, the shell lower die 112 and the seat ring upper die 211 are all provided with limiting parts 7 for limiting and fixing, correspondingly, the shell left die 113, the shell right die 114, the seat ring left die 212 and the seat ring right die 213 are provided with limiting grooves 8 fixed with the limiting parts 7, the shell upper die 111 and the shell lower die 112 only need to be moved to be fixed with the shell left die 113 and the shell right die 114 during die assembly, the upper die seat ring 211 only needs to be moved to be fixed with the seat ring left die 112 and, the L-shaped support 1121 can slide up and down along the upper shell mold 111 to drive the lower shell mold 112 to move up and down to realize mold opening and mold closing, the structure is very simple, the locking cylinder 3 is not needed to lock the mold up and down, each mold only needs to slide horizontally on the rack 4 to realize mold opening during mold opening, only the lower shell mold 112 needs to move up and down to open the mold, the mold opening process of the lower shell mold 112 is realized through the L-shaped support 1121 at the bottom end, the mold is locked by the locking cylinder 3 after mold closing, and the mold locking force is 80-100T. In actual production, the shell forming die 11 and the seat ring forming die 21 are arranged on the frame 4 at intervals, and are produced in a matched mode, so that the efficiency is improved.
Specifically, the die sinking step comprises primary die sinking and complete die sinking, and the primary die sinking comprises the following steps:
the first air cylinder 1111 on the upper shell die 111 ejects the left shell die 113 and the right shell die 114 out to realize initial die opening, and the intervals between the left shell die 113 and the right shell die 114 and the upper shell die 111 are both 3-5 cm;
and a second air cylinder 2111 on the seat ring upper die 211 ejects the seat ring left die 212 and the seat ring right die 213 out to realize initial die opening, and the space between the seat ring left die 212 and the seat ring right die 213 and the seat ring upper die 211 is 3-5 cm.
Thus, the first cylinder 1111 and the second cylinder 2111 are both mold opening cylinders with the stroke of about 40mm, and are used for performing initial mold opening on the shell forming mold 11 and the seat ring forming mold 21 after the shell green body 1 and the seat ring green body 2 are formed, and in the initial mold opening process, the first cylinder 1111 and the second cylinder 2111 respectively eject the left shell mold 113, the right shell mold 114, the left seat ring mold 212 and the right seat ring mold 213 on the left and right sides, so that the upper shell mold 111, the lower shell mold 112, the left shell mold 113 and the right shell mold 114 are separated by 3-5cm, and similarly, the upper seat ring mold 211, the left seat ring mold 212 and the right seat ring mold 213 are also separated by 3-5cm, so that the formed shell green body 1 and the seat ring green body 2 are both at a distance of 3-5cm from the left and right side molds, compressed gas in the shell forming mold 11 and the forming mold 21 is discharged, and the formed shell green body 1 and seat ring green body 2 are prevented from being damaged by back, at the moment, the shell upper die 111, the shell lower die 112 and the shell blank 1 are integrated, the shell left die 113 and the shell right die 114 are separated from the shell blank 1, similarly, the seat ring upper die 211 is integrated with the seat ring blank 2, and the seat ring left die 212 and the seat ring right die 213 are separated from the seat ring blank.
Further, the complete mold opening comprises the following steps:
the rack 4 drives the left shell mold 113 to move continuously through the trailer 41, the left shell mold 113 drives the upper shell mold 111 to move continuously through the connecting rod 42, the lower shell mold 112 moves downwards along the upper shell mold 111 through the first driving part 1122, and finally compressed gas is introduced into the upper shell mold 111 to realize complete mold opening with the shell blank 1;
the frame 4 drives the seat ring left die 212 to continuously move through the trailer 41, the seat ring left die 212 drives the seat ring upper die 211 to continuously move through the connecting rod 42, and finally compressed gas is introduced into the seat ring upper die 211 to realize complete die opening with the seat ring blank body 2.
That is, in the present embodiment, the housing right mold 114 and the seat right mold 213 are both in a stationary state, the complete mold opening process is first the movement of the housing upper mold 111 and the seat upper mold 211, because the frame 4 is provided with the trailer 41 which can drag the upper shell mould 111 and the upper seat ring mould 211, the connecting rod 42 passes through the upper shell mould 111, the left shell mould 113, the right shell mould 114, the upper seat ring mould 211, the left seat ring mould 212 and the right seat ring mould 213, therefore, under the action of the trailer 41, the shell left die 113 can drive the shell upper die 111 to move forward through the connecting rod 42, at this time, the distance between the shell left die 113 and the shell right die 114 and the shell upper die 111 and the shell lower die 112 is large, the shell lower die 112 is driven by the first driving piece 1122 to slide downwards along the rack 4 until the shell lower die is completely separated from the shell green body 1, so that the complete demoulding of the shell green body 1 is realized, and at this time, the shell green body 1 and the shell upper die 111 are integrated; similarly, the seat ring left die 212 drives the seat ring upper die 211 to move continuously through the connecting rod 42, at this time, the seat ring blank 2 and the seat ring upper die 211 are integrated, and a large distance exists between the seat ring left die 212 and the seat ring right die 213, the shell forming die 11 and the seat ring forming die 21 are both composed of an internal porous resin layer and an external sealing layer, compressed air enables water in the porous resin to be discharged to a position between the seat ring blank 2, the shell blank 1 and the die, so that the seat ring blank 2 and the shell blank 1 are smoothly demoulded, water in the die is discharged continuously, next grouting is prepared, introduced compressed air is 0.1-0.2MPa, then the shell blank 1 and the seat ring blank 2 can be collected by the blank support frame 6, besides a mechanical collection mode, manual receiving can be adopted to realize separation, and the next die opening step is continued after the shell blank 1 and the seat ring blank 2 are received.
Further, the step of forming the blank also comprises the steps of grouting and slurry discharging, and the step of respectively injecting slurry into the cavity of the shell forming die 11 and the cavity of the seat ring forming die 21 to form the shell blank 1 and the seat ring blank 2 comprises the following steps of: and slurry is injected into the 11-type cavity of the shell forming die and the 21-type cavity of the seat ring forming die and is also injected into the pressure cylinder 5, the slurry valve 52 of the pressure cylinder is closed when the liquid level of the slurry in the pressure cylinder 5 reaches the liquid level detector 51, the slurry injection is stopped when the 11-type cavity of the shell forming die and the 21-type cavity of the seat ring forming die are full, the slurry valve 52 of the pressure cylinder is opened, and 0.9-1.5MPa of compressed air is introduced into the pressure cylinder 5 to extrude and form the moisture of the slurry in the 11-type cavity of the shell forming die and the 21-type cavity of the seat ring forming die.
It can be understood that the slurry is injected into the pressure cylinder 5, the housing forming mold 11 and the seat ring forming mold 21 at the same time, the main function of the pressure cylinder 5 is to extrude the moisture in the slurry after the compressed gas is introduced, and the slurry in the pressure cylinder 5 can be timely supplemented into the housing forming mold 11 and the seat ring forming mold 21, so as to prevent the housing blank 1 and the seat ring blank 2 from being partially vacant due to the excessive pressure, in the actual production, the slurry is controlled to be filled in the housing forming mold 11 and the seat ring forming mold 21 through the injection time, the pressure cylinder 5 is provided with the liquid level detector 51 and the pressure cylinder slurry valve 52, because the slurry which can be accommodated in the pressure cylinder 5 and the forming mold 1 is limited, when the slurry in the pressure cylinder 5 is excessive, the water in the slurry is extruded into the mold pores with very large pressure, the final forming effect of the slurry is not good, and when the liquid level detector 51 detects that the slurry is at the critical height, the pressure cylinder slurry valve 52 is closed, at this time, less compressed air of 0.9-1.5Mpa is introduced to extrude the water in the slurry into the pores of the die, and the slurry forming effect is better.
Further, the step of forming the blank also comprises the step of discharging slurry: and the pressure cylinder 5 opens the slurry return port 53 at the bottom end after pressure relief, and residual slurry in the cavity of the shell forming die 11 and the cavity of the seat ring forming die 21 is discharged through the slurry return port 53. So, shell forming die 11 and seat circle forming die 21 directly carry out the grout discharging through the thick liquid mouth 53 that returns of pressure cylinder 5, convenient and fast.
Further, the time for introducing the compressed air into the pressure cylinder 5 is 15-25 min. Therefore, along with the continuous injection of compressed air, the pressure cylinder 5 also continuously replenishes slurry into the die, the shell blank body 1 and the seat ring blank body 2 are thicker and thicker, the thicknesses of the shell blank body 1 and the seat ring blank body 2 are particularly 8-12cm, the introduction time of the compressed air is controlled within 15-25min, the phenomenon that the blank bodies are too thick or too thin is avoided, and the quality of finished sanitary ware products is not facilitated.
Further, the step of forming the blank also comprises a step of consolidating the blank: and closing the grout return port 53, and introducing compressed air of 0.1-0.4Mpa into the shell forming die 11 cavity and the seat ring forming die 21 cavity. Thus, after the slurry return port 53 is closed, the cavity of the shell forming die 11 and the cavity of the seat ring forming die 21 are both in a closed state, at this time, 0.1-0.4Mpa of compressed air is injected into the shell forming die 11 and the seat ring forming die 21, and the formed blank body is subjected to the pressure of the compressed air again to extrude the moisture in the blank body again, so that the blank body is further hardened.
Further, the time for introducing the compressed air into the pressure cylinder 5 is 3-6 min. The main purpose of controlling the consolidation time of the blank body is to avoid excessive extrusion of water in the blank body, over-drying of the shell blank body 1 and the seat ring blank body 2 to cause cracking, and easy continuous development of cracks in the subsequent firing process, thereby reducing the quality of sanitary ware.
In addition, the invention also provides the sanitary ware prepared by the high-pressure slip casting production method of the sanitary ware, which comprises the shell blank body 1 and the seat ring blank body 2, wherein the upper surface of the shell blank body 1 is adhered to the lower surface of the seat ring blank body 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The high-pressure slip casting production method of the sanitary ware is characterized by comprising the following steps of:
forming a blank body: starting a locking oil cylinder, enabling a lower shell die to be matched with the die upwards through an L-shaped support at the bottom end of the lower shell die, enabling the locking oil cylinder to drive an upper shell die, a left shell die and a right shell die of a shell forming die and an upper seat ring die, a left seat ring die and a right seat ring die of the seat ring forming die to be matched with the middle of a rack and locked, then respectively injecting slurry into a cavity of the shell forming die and a cavity of the seat ring forming die to form a shell blank body and a seat ring blank body, and opening the die to take out the shell blank body and the;
bonding: bonding the upper surface of the shell blank body and the lower surface of the seat ring blank body to obtain the sanitary ware;
the bonding surface of the shell blank and the seat ring blank is an inclined plane, and the included angle alpha between the inclined plane and the horizontal plane is 15-30 degrees.
2. The sanitary ware high-pressure slip casting production method according to claim 1, wherein the mold opening step comprises an initial mold opening and a complete mold opening, and the initial mold opening comprises the following steps:
the shell upper die ejects the shell left die and the shell right die out through a first air cylinder to realize initial die opening, and the intervals between the shell left die, the shell right die and the shell upper die are all 3-5 cm;
and the seat ring upper die ejects the seat ring left die and the seat ring right die out through a second air cylinder to realize preliminary die sinking, and the space between the seat ring left die and the seat ring right die and the seat ring upper die is 3-5 cm.
3. The sanitary ware high-pressure slip casting production method according to claim 2, wherein the complete mold opening comprises the following steps:
the frame drives the shell left die to continuously move through a trailer, the shell left die drives the shell upper die to continuously move through a connecting rod, the shell lower die downwards moves along the shell upper die through a first driving piece, and finally compressed gas is introduced into the shell upper die to realize complete die opening with a shell green body;
the frame drives the seat ring left die to continuously move through the trailer, the seat ring left die drives the seat ring upper die to continuously move through the connecting rod, and finally compressed gas is introduced into the seat ring upper die to realize complete die opening with the seat ring green body.
4. The sanitary ware high-pressure slip casting production method according to claim 1, wherein the step of injecting slurry into the shell forming mold cavity and the seat ring forming mold cavity respectively to form a shell blank and a seat ring blank comprises the steps of: and slurry is injected into the shell forming die cavity and the seat ring forming die cavity and is also injected into the pressure cylinder, a slurry valve of the pressure cylinder is closed when the liquid level of the slurry in the pressure cylinder reaches a liquid level detector, the slurry injection is stopped when the shell forming die cavity and the seat ring forming die cavity are full, the slurry valve of the pressure cylinder is opened, and 0.9-1.5MPa of compressed air is introduced into the pressure cylinder to extrude and form the moisture of the slurry in the shell forming die cavity and the seat ring forming die cavity.
5. The sanitary ware high-pressure slip casting production method according to claim 4, wherein the step of "blank forming" further comprises the step of discharging the slip: and opening a slurry return port at the bottom end of the pressure cylinder after the pressure of the pressure cylinder is released, and discharging the residual slurry in the shell forming die cavity and the seat ring forming die cavity through the slurry return port.
6. The sanitary ware high-pressure slip casting production method according to claim 4, wherein the time for introducing compressed air into the pressure cylinder is 15-25 min.
7. The sanitary ware high-pressure slip casting production method according to claim 5, wherein the step of "blank forming" further comprises a blank consolidation step: and closing the grout return port, and introducing 0.1-0.4Mpa of compressed air into the shell forming die cavity and the seat ring forming die cavity.
8. The sanitary ware high-pressure slip casting production method according to claim 7, wherein the time for introducing compressed air into the pressure cylinder is 3-6 min.
9. The sanitary ware manufactured by the sanitary ware high-pressure slip casting production method according to any one of claims 1 to 8, characterized by comprising the shell blank and the seat ring blank, wherein the upper surface of the shell blank is bonded with the lower surface of the seat ring blank.
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