CN107972162B - Ceramic tile forming die with stable structure - Google Patents
Ceramic tile forming die with stable structure Download PDFInfo
- Publication number
- CN107972162B CN107972162B CN201810034423.3A CN201810034423A CN107972162B CN 107972162 B CN107972162 B CN 107972162B CN 201810034423 A CN201810034423 A CN 201810034423A CN 107972162 B CN107972162 B CN 107972162B
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- air
- channel
- mold core
- colloid
- supporting plate
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- 239000000919 ceramic Substances 0.000 title claims abstract description 38
- 239000000084 colloidal system Substances 0.000 claims abstract description 104
- 239000011148 porous material Substances 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 description 47
- 238000003825 pressing Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 238000000462 isostatic pressing Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0008—Venting channels, e.g. to avoid vacuum during demoulding or allowing air to escape during feeding, pressing or moulding
-
- 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
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The ceramic tile forming mold with stable structure includes bottom board, mold core, upper colloid, lower colloid, support board and air tap; the bottom plate is fixedly connected with the mold core, and an air inlet and outlet channel is arranged at the joint of the bottom plate and the mold core; the mold core is provided with a plurality of pore channels and a plurality of mounting holes, and each pore channel is communicated with each mounting hole; the mounting hole is a counter bore and is arranged on the upper surface of the mold core; the supporting plate is arranged above the mold core and is fixedly connected with the mold core; the lower colloid wraps the supporting plate, and a plurality of oil layers are arranged at the joint of the lower colloid and the supporting plate; the surfaces of the lower colloid except the upper surface are connected with the mold core; the upper colloid is arranged on the upper surface of the lower colloid and the upper surface of the mold core. The lower colloid is not only stuck on the supporting plate, but also goes deep into the through hole, so that the connection between the supporting plate and the colloid is firmer, the colloid is not easy to damage or loose, and the die structure is stable.
Description
Technical Field
The invention relates to the technical field of ceramic molds, in particular to a ceramic tile forming mold with a stable structure.
Background
The ceramic tile is formed by pressing powder with water content through a die. However, as the powder contains a large amount of air, the powder is not easy to discharge, layering is extremely easy to occur, a certain number of air vents are formed in the air discharge mold core at present, the powder is discharged through the air vents, meanwhile, the pressing speed is reduced, and the corresponding air discharge time is increased.
The isostatic pressing die is a commonly used die for pressing ceramic bricks, and realizes uniform pressing of ceramic products and uniform density of the ceramic products by utilizing the characteristic that oil liquid uniformly transmits pressure in all directions. However, when the pressure of the injected pressure oil is high or the pressure in the brick making process is high, the glue layer is easy to damage or loosen after repeated use for a plurality of times, so that the structure of the mould is unstable, oil is easy to leak, even the glue surface bulges, and the brick pressing effect is poor.
Disclosure of Invention
The invention aims to provide a ceramic forming die with stable colloid structure and stable oil layer aiming at the defects in the prior art.
To achieve the purpose, the invention adopts the following technical scheme: the ceramic tile forming mold with stable structure includes bottom board, mold core, upper colloid, lower colloid, support board and air tap;
the bottom plate is fixedly connected with the mold core, and an air inlet and outlet channel is arranged at the joint of the bottom plate and the mold core;
The mold core is provided with a plurality of pore channels and a plurality of mounting holes, and each pore channel is communicated with each mounting hole; the mounting hole is a counter bore and is arranged on the upper surface of the mold core;
the supporting plate is arranged above the mold core and is fixedly connected with the mold core; the lower colloid wraps the supporting plate, and a plurality of oil layers are arranged at the joint of the lower colloid and the supporting plate; the surfaces of the lower colloid except the upper surface are connected with the mold core;
The upper colloid is arranged on the upper surface of the lower colloid and the upper surface of the mold core;
an oil inlet and outlet channel is also arranged in the mold core, and the oil inlet and outlet channel is communicated with the oil layer;
The air tap passes through the supporting plate and is arranged in the mounting hole, and an air suction and exhaust channel is arranged in the air tap;
The support plate is provided with a plurality of through holes, and the lower colloid is adhered to the upper surface of the mold core after passing through the through holes.
Preferably, the through holes comprise needle sleeve holes and glue fixing long holes;
the needle sleeve hole comprises a sleeve hole part and a rubber fixing fin hole part; the lower colloid is adhered to the upper surface of the mold core after passing through the hole parts of the fixed colloid wings;
the fixed rubber wing hole parts are arranged on two sides of the trepanning part and are communicated with the trepanning part;
the air tap is arranged in the trepanning part;
The needle sleeve hole parts are distributed on the mold core in a mode of being arranged in a plurality of rows and columns at equal intervals;
The glue fixing long hole is also a through hole; the glue fixing long holes are arranged between two adjacent needle sleeve hole parts in each row and each column.
Preferably, the hardness of the upper colloid is greater than the hardness of the lower colloid;
The supporting plate is fixedly connected with the mold core through a plurality of positioning screws and/or a plurality of magnet blocks;
The positioning screw penetrates through the supporting plate and then is locked to the mold core; the top of the magnet block attracts the bottom of the supporting plate, and the bottom of the magnet block attracts the top of the mold core.
Preferably, the upper surface of the air tap is level with the upper surface of the upper colloid;
the diameter of the mounting hole is larger than that of the pore canal.
Preferably, the air tap comprises an air outlet end and a connecting end, and the bottom surface of the air outlet end is connected with the top surface of the connecting end;
The cross-sectional area of the air outlet end is smaller than that of the connecting end;
The top surface of the air outlet end and the top surface of the upper colloid are mutually flush, and the upper colloid is arranged between the top surface of the air outlet end and the top surface of the connecting end;
The air suction and exhaust channel comprises a micro channel and a wide channel; the micro-channel is arranged in the air outlet end, the wide channel is arranged in the connecting end, the micro-channel and the wide channel are mutually communicated, and the wide channel is communicated with the pore canal.
Preferably, the air outlet end and the connecting end are cylinders with the same outer diameter up and down;
the outer diameter of the air outlet end is smaller than that of the connecting end;
the wide channel is a cylindrical cavity with the same upper and lower diameters, and the micro channel is also a cylindrical cavity with the same upper and lower diameters; the diameter range of the micro-channel is 1-2mm, and the diameter range of the wide channel is 10-20mm;
The micro-channels and the wide channels are connected through the transition of the round table-shaped through holes.
Preferably, the air outlet end and the connecting end are square columns;
the length of the section of the air outlet end is smaller than that of the section of the connecting end; the width of the cross section of the air outlet end is smaller than that of the cross section of the connecting end;
The wide channel is a square column cavity with the same upper and lower sections; the micro-channel is a square column cavity with the same upper and lower sections, and the section area of the micro-channel is smaller than that of the wide channel;
The micro-channels and the wide channels are connected through the transition of the round-table-shaped through holes.
Preferably, the air suction and exhaust channel is internally provided with an air column, the air column is a cylinder or a square column, the lower end of the air column is connected to the lower end of the air suction and exhaust channel, the top surface of the air column is flush with the top surface of the air outlet end, the air column is not in contact with the inner wall of the air suction and exhaust channel, and an annular air circulation channel is formed between the air column and the air suction and exhaust channel.
Preferably, the air inlet and outlet channel is a square groove formed on the bottom surface of the mold core and/or the top surface of the bottom plate, and the mold core and the bottom plate are mutually stuck tightly to form the air inlet and outlet channel;
the pore canal is communicated with the air inlet and outlet channels.
Preferably, the mold core is fixed with the bottom plate by bolts; the mold core and the outer frame of the bottom plate are provided with sealing rings; the outer edge of the bolt is also sleeved with a sealing ring;
an upper chamfer is arranged at the joint of the air outlet end and the outer contour of the connecting end and used for transition;
the lowest end of the outer contour of the connecting end is provided with a lower chamfer.
The invention has the beneficial effects that: the ceramic tile forming die is also an isostatic pressing die, and has various excellent characteristics of the isostatic pressing die, so that the ceramic powder has good pressing effect. And the backup pad that sets up can strengthen the rigidity of lower colloid, guarantees that the oil reservoir is stable. When in pressing, the pressure of oil is directly acted on the lower colloid instead of directly acting on the upper colloid, namely, the oil passes through the transition of the lower colloid and then is conducted to the upper colloid, so that the pressure of the oil layer acts on the lower colloid, the upper surface and the lower surface of the upper colloid are prevented from being impacted by high pressure at the same time, the upper colloid is not easy to damage, and the structure is stable. Moreover, the lower colloid is not only stuck on the upper surface of the supporting plate, but also can penetrate into the through holes, so that the connection between the supporting plate and the lower colloid is firmer, and the ceramic forming die is stable in structure when being pressed, even if the lower colloid is impacted by the oil layer, the lower colloid is not easy to damage or loose.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic illustration of a semi-sectional structure of one embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a support plate according to one embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the A-direction structure of FIG. 2;
FIG. 4 is a schematic illustration of a mold core structure according to one embodiment of the present invention;
FIG. 5 is a schematic view in partial section in the direction B-B of FIG. 4;
FIG. 6 is a schematic view in partial cross-section taken along the direction C-C of FIG. 4;
FIG. 7 is a schematic diagram of the floor construction of one embodiment of the invention;
FIG. 8 is a schematic view in partial cross-section in the direction D-D of FIG. 7;
FIG. 9 is a schematic perspective view of an air cap according to one embodiment of the present invention;
FIG. 10 is a schematic perspective view of an air faucet according to one embodiment of the present invention;
FIG. 11 is a schematic illustration of a full section of an air cap according to one embodiment of the present invention;
FIG. 12 is a schematic illustration of a full section of an air cap according to one embodiment of the present invention.
Wherein: the mold comprises a bottom plate 1, a mold core 2, a pore canal 21, a mounting hole 22, an oil inlet and outlet channel 23, an upper colloid 31, a lower colloid 32, a positioning screw 33, a magnet 34, a supporting plate 4, a needle sleeve hole 41, a glue fixing long hole 42, a sleeve hole part 411, a glue fixing wing hole part 412, an air tap 5, an air suction and exhaust channel 51, an air outlet end 52, a connecting end 53, an air column 54, an upper chamfer 55, a lower chamfer 56, a micro channel 511, a wide channel 512, an air inlet and outlet channel 6, a square groove 61, an oil layer 7, a bolt 8 and a sealing ring 9.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The ceramic tile forming mold with stable structure comprises a bottom plate 1, a mold core 2, an upper colloid 31, a lower colloid 32, a supporting plate 4 and an air tap 5;
the bottom plate 1 is fixedly connected with the mold core 2, and an air inlet and outlet channel 6 is arranged at the joint of the bottom plate 1 and the mold core 2;
The mold core 2 is provided with a plurality of pore passages 21 and a plurality of mounting holes 22, and each pore passage 21 is communicated with each mounting hole 22; the mounting hole 22 is a counter bore and is arranged on the upper surface of the mold core 2;
The supporting plate 4 is arranged above the mold core 2 and is fixedly connected with the mold core 2; the lower colloid 32 wraps the supporting plate 4, and a plurality of oil layers 7 are arranged at the joint of the lower colloid 32 and the supporting plate 4; the other surfaces of the lower colloid 32 except the upper surface are connected with the mold core 2;
The upper colloid 31 is arranged on the upper surface of the lower colloid 32 and the upper surface of the mold core 2;
An oil inlet and outlet channel 23 is also arranged in the mold core 2, and the oil inlet and outlet channel 23 is communicated with the oil layer 7;
The air tap 5 passes through the supporting plate 4 and is arranged in the mounting hole 22, and an air suction and exhaust channel 51 is arranged in the air tap 5;
The support plate 4 is provided with a plurality of through holes, and the lower colloid 32 is adhered to the upper surface of the mold core 2 after passing through the through holes.
During processing, the upper colloid 31 is pressed on ceramic powder, gas in the powder is discharged through the air suction and exhaust channel 51, the pore canal 21 and the air inlet and outlet channel 6 of the air tap 5, so that the powder is convenient to press, and after the ceramic powder is pressed, the air is blown into the air inlet and outlet channel 6 through external blowing equipment, and is blown out from the air suction and exhaust channel 51, so that the powder adsorbed in or near the air suction and exhaust channel 51 can be blown out, and the next pressing is convenient.
The ceramic tile forming die is also an isostatic pressing die, and has various excellent characteristics of the isostatic pressing die, so that the ceramic powder has good pressing effect. The rigidity of the lower colloid 32 can be enhanced by the support plate 4, and the stability of the oil layer 7 is ensured. During pressing, the pressure of the oil directly acts on the lower colloid 32, but not directly acts on the upper colloid 31, namely, the oil passes through the transition of the lower colloid 32 and then is conducted to the upper colloid 31, so that the pressure of the oil layer 7 acts on the lower colloid 32, the upper surface and the lower surface of the upper colloid 6 are prevented from being impacted by high pressure at the same time, the upper colloid 31 is not easy to damage, and the structure is stable.
Moreover, the lower colloid 32 is not only adhered to the upper surface of the supporting plate 4, but also can penetrate into the through holes, so that the connection between the supporting plate 4 and the lower colloid 32 is firmer, and the ceramic forming die is stable in structure even if the lower colloid 32 is impacted by the oil layer 7 during pressing.
The lower colloid 32 surrounds the support plate 4, meaning that five sides of the support plate 4 are covered by the lower colloid 32. During assembly, the supporting plate 4 can be locked above the mold core 2, an oil layer is required to be arranged, anti-sticking oil is brushed on the surface of the supporting plate 4, then molten lower colloid 32 is injected, after cooling, the supporting plate 4 can be ensured to be fully covered, and then an oil layer is formed.
The connection between the lower colloid 32 and the supporting plate 4 is provided with a plurality of oil layers 7, which means that the upper surface and/or the lower surface of the supporting plate 4 is provided with an oil layer, so as to be convenient for pressing different powders.
Further, the through holes comprise two kinds of needle sleeve holes 41 and glue fixing long holes 42;
The needle sleeve hole 41 comprises a sleeve hole part 411 and a glue fixing wing hole part 412; the lower colloid 32 is adhered to the upper surface of the mold core 2 after passing through the colloid fixing wing hole part 412;
the glue fixing fin hole parts 412 are arranged at two sides of the sleeve hole part 411 and are communicated with the sleeve hole part 411;
The air tap 5 is disposed in the trepanning 411;
The needle sleeve holes 41 are distributed on the mold core 2 in a mode of being arranged in a plurality of rows and columns at equal intervals;
the glue fixing long hole 42 is also a through hole; the long fixing holes 42 are provided between the adjacent two needle sheath holes 41 in each row and each column.
From the schematic view of the mold core 2, the hole portions 412 correspond to two wings of the hole portion 411, and since the hole portion 411 is provided with the air tap 5, if the hole portions 412 are not provided, the air tap 5 is only sleeved in the hole portion 411 of the mold core 2 plate, the connection is not firm, and the oil layer 7 is easy to be filled into the upper colloid 31 when being impacted. The lower colloid 32 can be disposed in the hole 412 of the fixed colloid wing, which is equivalent to the connection between the reinforcing support plate 4 and the lower colloid 32, so that the oil is difficult to pass through the support plate 4.
The glue fixing long holes 42 further strengthen the connection between the support plate 4 and the upper glue 31, so that the lower glue 32 is less likely to separate from and support. In the joint of the air tap 5 and the support plate 4, besides the reinforced joint support of the glue fixing fin hole 412, the reinforced support function of the glue fixing long hole 42 is also provided, so that the periphery of the sleeve hole 411 is well supported, and the oil is less prone to leakage.
Further, the hardness of the upper colloid 31 is greater than that of the lower colloid 32;
The supporting plate 4 is fixedly connected with the mold core 2 through a plurality of positioning screws 33 and/or a plurality of magnet blocks 34;
The positioning screw 33 passes through the supporting plate 4 and then is locked to the mold core 2; the top of the magnet block 34 attracts the bottom of the support plate 4, and the bottom of the magnet block 34 attracts the top of the mold core 2.
Since the upper colloid 31 directly acts on the powder, the hardness of the upper colloid must be sufficiently great, and otherwise, the upper colloid 31 is easily deformed to make the surface of the powder uneven when the powder is pressed. The lower colloid 32 contains the oil layer 7, the oil layer 7 must be fluctuated during pressing, and in order to balance the fluctuation, the hardness of the lower colloid 32 is set lower than that of the upper colloid 31.
In addition, when the mold presses the powder, the pressing force is large, and in order to prevent the oil layer 7 from being stabilized, the movement of the support plate 4 is restricted, and the positioning screw 33 and the magnet block 34 can lock the support plate 4. Although both of the above-mentioned locking methods can lock the support plate 4, the locking of the positioning screw 33 is to destroy the support plate 4 (such as drilling), if the sealing is not good, oil leakage is easy to occur, so the support plate 4 is not destroyed by the magnet block 34, but the locking effect of the magnet block 34 is not necessarily good by the positioning screw 33, so the locking method can be selected according to the practical situation, for example, a large mold can be considered, the two can be used in combination, or the positioning screw 33 is used in multiple, and a small mold can be considered, and the above-mentioned method is not limited to the locking method of the support plate 4, of course, the above-mentioned method is only considered.
Further, the upper surface of the air tap 5 is level with the upper surface of the upper colloid 31;
The diameter of the mounting hole 22 is larger than the diameter of the duct 21.
Because the upper surface of the air tap 5 and the upper surface of the upper colloid 31 are mutually flush, when ceramic powder is pressed, the air tap 5 and the upper colloid 31 are simultaneously pressed on the powder, even if the ceramic molding grinding tool is continuously pressed down at this time, the air tap 5 and the upper colloid 31 are synchronously operated to continuously press down, so that the possibility of mutual movement of the air tap 5 and the upper colloid 31 is avoided, and the die is not easy to damage. In addition, since the upper surface of the air tap 5 and the upper surface of the upper colloid 31 are flush with each other, the powder is not contained in the joint therebetween, so that the surface of the pressed ceramic powder is flat. Therefore, when the die is used for pressing powder, the die is not easy to damage, the service life of the die can be prolonged, the production cost can be reduced, and the surface flatness of the pressed powder is good.
When the ceramic powder is pressed, the air tap 5 acts together with the mold core 2, the pressing force is large, so that the diameter of the air tap 5 is as large as possible in order to ensure the strength of the air tap 5, the pore canal 21 is used for ventilation, the air path diameter has no great influence on the ventilation effect, and the diameter of the mounting hole 22 is larger than the diameter of the pore canal 21. In addition, the diameter of the air nozzle 5 is larger than that of the pore canal 21, so that the air nozzle 5 cannot sink into the pore canal 21, and the air nozzle 5 is stably positioned in the mounting hole 22.
Further, the air tap 5 includes an air outlet end 52 and a connection end 53, wherein the bottom surface of the air outlet end 52 is connected to the top surface of the connection end 53;
The cross-sectional area of the outlet end 52 is smaller than the cross-sectional area of the connection end 53;
the top surface of the air outlet end 52 and the top surface of the upper colloid 31 are flush with each other, and the upper colloid 31 is disposed between the top surface of the air outlet end 52 and the top surface of the connection end 53;
The suction and exhaust passage 51 includes a micro passage 511 and a wide passage 512; the micro-channel 511 is disposed in the air outlet end 52, the wide channel 512 is disposed in the connection end 53, the micro-channel 511 and the wide channel 512 are mutually communicated, and the wide channel 512 is communicated with the duct 21.
Because the upper colloid 31 is PU glue for preventing powder sticking, and when metal presses down on ceramic powder, powder sticking is generally caused, so in order to ensure good powder pressing effect of the mold, the contact area between the metal air nozzle 5 and powder is required to be reduced as much as possible, the area of the top surface of the air outlet end 52 of the air nozzle 5 is required to be as small as possible, less powder sticking is ensured, and the connection area between the upper colloid 31 and the air nozzle 5 is also more, so that the connection between the air nozzle 5 and the upper colloid 31 is firmer.
Further, the air outlet end 52 and the connecting end 53 are cylinders with the same outer diameter;
the outer diameter of the air outlet end 52 is smaller than the outer diameter of the connecting end 53;
the wide channel 512 is a cylindrical cavity with the same upper and lower diameters, and the micro channel 511 is also a cylindrical cavity with the same upper and lower diameters; the diameter of the micro channel 511 ranges from 1 to 2mm, and the diameter of the wide channel 512 ranges from 10 to 20mm;
The micro-channels 511 and the wide channels 512 are connected through a truncated cone-shaped through hole transition.
The diameter of the powder is 0.1mm, and the diameter of the powder agglomeration is more than 10mm. During pressing, air in the ceramic powder can be discharged into the wide channel 512 through the micro-channel 511 and then discharged, and the powder can be agglomerated after being pressed, so that the powder is not easy to enter the micro-channel 511, and the method is equivalent to only being capable of exhausting air and not discharging powder. After pressing, air is blown into the air inlet and outlet channel 6, the air is easy to enter the wide channel 512 and then is blown out through the micro channel 511, and powder near the top surfaces of the micro channel 511 and the air tap 5 is blown out, because the diameter of the micro channel 511 is smaller than that of the wide channel 512, the flow rate and the pressure of the air discharged from the micro channel 511 are increased, and the powder can be blown out in an accelerating way. The circular truncated cone-shaped through hole is used as a gas transition area, so that the impact of the gas in the wide channel 512 on the gas nozzle 5 can be slowed down, and the gas outflow speed can be increased.
Further, the air outlet end 52 and the connecting end 53 are square columns;
The length of the cross section of the air outlet end 52 is smaller than the length of the cross section of the connecting end 53; the width of the cross section of the air outlet end 52 is smaller than the width of the cross section of the connecting end 53;
the wide channel 512 is a square column cavity with the same upper and lower sections; the micro-channel 511 is a square column cavity with the same upper and lower sections, and the cross-sectional area of the micro-channel 511 is smaller than that of the wide channel 512;
the micro-channels 511 and the wide channels are connected through a truncated cone-shaped through hole transition.
The air in the ceramic powder can be discharged into the wide channel 512 through the micro-channel 511 and then discharged, and the powder can be agglomerated after being pressed, so that the powder is not easy to enter the micro-channel 511, and the method is equivalent to only being capable of exhausting air and not discharging powder. After pressing, air is blown into the air inlet and outlet channel 6, the air is easy to enter the wide channel 512 and then is blown out through the micro channel 511, and powder near the top surfaces of the micro channel 511 and the air tap 5 is blown out, because the cross-sectional area of the micro channel 511 is smaller than that of the wide channel 512, the flow rate and the air pressure of the air discharged from the micro channel 511 are increased, and the powder can be blown out in an accelerating way. The circular truncated cone-shaped through hole is used as a gas transition area, so that the impact of the gas in the wide channel 512 on the gas nozzle 5 can be slowed down, and the gas outflow speed can be increased.
Still further, an air column 54 is further disposed in the air suction and exhaust channel 51, the air column 54 is a cylinder or a square column, the lower end of the air column 54 is connected to the lower end of the air suction and exhaust channel 51, the top surface of the air column 54 is flush with the top surface of the air outlet end 52, the air column 54 is not in contact with the inner wall of the air suction and exhaust channel 51, and an annular air circulation channel is formed between the air column 54 and the air suction and exhaust channel 51.
The air column 54 divides the air outlet of the air suction and exhaust passage 51 into annular air outlets. Because the area of the exhaust port directly influences the effect of air outlet, and the diameter of the exhaust port directly influences whether the powder can enter and exit. The air outlet of the air tap 5 is annular, and the width of the annular diameter is small, so that the powder can be blocked from being discharged, and only the powder can be discharged.
Further, the air inlet and outlet channel 6 is a square groove 61 formed on the bottom surface of the mold core 2 and/or the top surface of the bottom plate 1, and the mold core 2 and the bottom plate 1 are tightly adhered to each other to form the air inlet and outlet channel 6;
the duct 21 communicates with the air inlet and outlet passage 6.
Because the difficulty of directly processing a long hole in the bottom plate 1 is very big, so here divide into two parts with business turn over gas and process, only need process square groove 61 in the bottom surface of mold core 2 and the top surface of bottom plate 1, so the processing degree of difficulty can greatly reduced, the processing of being convenient for.
Further, the mold core 2 is fixed with the bottom plate 1 by using bolts 8; the outer frames of the mold core 2 and the bottom plate 1 are provided with sealing rings 9; the outer edge of the bolt 8 is also sleeved with a sealing ring 9;
An upper chamfer 55 is arranged at the joint of the air outlet end 52 and the outer contour of the connecting end 53 for transition;
The lowermost end of the outer contour of the connecting end 53 is provided with a lower chamfer 56.
The upper chamfer 55 is used for ensuring that the thickness of the wall of the air tap 5 does not have great change, so that the structural strength of the air tap 5 is avoided, and meanwhile, the contact area between the adhesive surface and the upper chamfer 55 is also increased, so that the adhesive surface can be stably adhered to the air tap 5, and the damage of the adhesive surface can be avoided.
The purpose of the sealing ring 9 is to prevent the ceramic forming die from leaking gas or powder.
Because the air tap 5 is in interference connection with the mounting hole 22, when the mounting is performed, scrap iron must fall down, and the lower chamfer 56 is arranged for preventing burrs, and the other purpose is that large friction can not occur with the mounting hole 22 when the mounting is performed, so that the mounting hole 22 can not be scratched, and the mounting is convenient.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (10)
1. The ceramic tile forming mold with stable structure includes bottom board, mold core, upper colloid, lower colloid, support board and air tap;
the method is characterized in that: the bottom plate is fixedly connected with the mold core, and an air inlet and outlet channel is arranged at the joint of the bottom plate and the mold core;
The mold core is provided with a plurality of pore channels and a plurality of mounting holes, and each pore channel is communicated with each mounting hole; the mounting hole is a counter bore and is arranged on the upper surface of the mold core;
the supporting plate is arranged above the mold core and is fixedly connected with the mold core; the lower colloid wraps the supporting plate, and a plurality of oil layers are arranged at the joint of the lower colloid and the supporting plate; the surfaces of the lower colloid except the upper surface are connected with the mold core;
The upper colloid is arranged on the upper surface of the lower colloid and the upper surface of the mold core;
an oil inlet and outlet channel is also arranged in the mold core, and the oil inlet and outlet channel is communicated with the oil layer;
The air tap passes through the supporting plate and is arranged in the mounting hole, and an air suction and exhaust channel is arranged in the air tap;
The support plate is provided with a plurality of through holes, and the lower colloid is adhered to the upper surface of the mold core after passing through the through holes.
2. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the through holes comprise needle sleeve holes and glue fixing long holes;
the needle sleeve hole comprises a sleeve hole part and a rubber fixing fin hole part; the lower colloid is adhered to the upper surface of the mold core after passing through the hole parts of the fixed colloid wings;
the fixed rubber wing hole parts are arranged on two sides of the trepanning part and are communicated with the trepanning part;
the air tap is arranged in the trepanning part;
The needle sleeve hole parts are distributed on the mold core in a mode of being arranged in a plurality of rows and columns at equal intervals;
The glue fixing long hole is also a through hole; the glue fixing long holes are arranged between two adjacent needle sleeve hole parts in each row and each column.
3. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the hardness of the upper colloid is greater than that of the lower colloid;
The supporting plate is fixedly connected with the mold core through a plurality of positioning screws and/or a plurality of magnet blocks;
The positioning screw penetrates through the supporting plate and then is locked to the mold core; the top of the magnet block attracts the bottom of the supporting plate, and the bottom of the magnet block attracts the top of the mold core.
4. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the upper surface of the air tap is level with the upper surface of the upper colloid;
the diameter of the mounting hole is larger than that of the pore canal.
5. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the air tap comprises an air outlet end and a connecting end, and the bottom surface of the air outlet end is connected with the top surface of the connecting end;
The cross-sectional area of the air outlet end is smaller than that of the connecting end;
The top surface of the air outlet end and the top surface of the upper colloid are mutually flush, and the upper colloid is arranged between the top surface of the air outlet end and the top surface of the connecting end;
The air suction and exhaust channel comprises a micro channel and a wide channel; the micro-channel is arranged in the air outlet end, the wide channel is arranged in the connecting end, the micro-channel and the wide channel are mutually communicated, and the wide channel is communicated with the pore canal.
6. The ceramic tile forming mold with stable structure according to claim 5, wherein: the air outlet end and the connecting end are cylinders with the same outer diameter up and down;
the outer diameter of the air outlet end is smaller than that of the connecting end;
the wide channel is a cylindrical cavity with the same upper and lower diameters, and the micro channel is also a cylindrical cavity with the same upper and lower diameters; the diameter range of the micro-channel is 1-2mm, and the diameter range of the wide channel is 10-20mm;
The micro-channels and the wide channels are connected through the transition of the round table-shaped through holes.
7. The ceramic tile forming mold with stable structure according to claim 5, wherein: the air outlet end and the connecting end are square columns;
the length of the section of the air outlet end is smaller than that of the section of the connecting end; the width of the cross section of the air outlet end is smaller than that of the cross section of the connecting end;
The wide channel is a square column cavity with the same upper and lower sections; the micro-channel is a square column cavity with the same upper and lower sections, and the section area of the micro-channel is smaller than that of the wide channel;
The micro-channels and the wide channels are connected through the transition of the round-table-shaped through holes.
8. A structurally stable ceramic tile forming die according to claim 6 or 7, wherein: the air suction and exhaust channel is internally provided with an air column which is a cylinder or a square column, the lower end of the air column is connected with the lower end of the air suction and exhaust channel, the top surface of the air column is flush with the top surface of the air outlet end, the air column is not contacted with the inner wall of the air suction and exhaust channel, and an annular air circulation channel is formed between the air column and the air suction and exhaust channel.
9. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the air inlet and outlet channel is a square groove formed in the bottom surface of the mold core and/or the top surface of the bottom plate, and the mold core and the bottom plate are mutually stuck to form the air inlet and outlet channel;
the pore canal is communicated with the air inlet and outlet channels.
10. The structurally stable ceramic tile forming die set forth in claim 1, wherein: the mold core is fixed with the bottom plate by bolts; the mold core and the outer frame of the bottom plate are provided with sealing rings; the outer edge of the bolt is also sleeved with a sealing ring;
an upper chamfer is arranged at the joint of the air outlet end and the outer contour of the connecting end and used for transition;
the lowest end of the outer contour of the connecting end is provided with a lower chamfer.
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| CN201810034423.3A CN107972162B (en) | 2018-01-15 | 2018-01-15 | Ceramic tile forming die with stable structure |
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| CN201810034423.3A CN107972162B (en) | 2018-01-15 | 2018-01-15 | Ceramic tile forming die with stable structure |
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| CN107972162B true CN107972162B (en) | 2024-04-19 |
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| CN109397484B (en) * | 2018-10-31 | 2024-05-14 | 苏州达力客自动化科技有限公司 | High-voltage insulator rubbing head forming die |
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