CN219820066U - Isostatic compaction die for U-shaped ceramic blank - Google Patents
Isostatic compaction die for U-shaped ceramic blank Download PDFInfo
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- CN219820066U CN219820066U CN202321267075.7U CN202321267075U CN219820066U CN 219820066 U CN219820066 U CN 219820066U CN 202321267075 U CN202321267075 U CN 202321267075U CN 219820066 U CN219820066 U CN 219820066U
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- 239000000919 ceramic Substances 0.000 title claims abstract description 19
- 238000005056 compaction Methods 0.000 title claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000000462 isostatic pressing Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 238000009694 cold isostatic pressing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The utility model discloses a U-shaped ceramic blank isostatic compaction mould which comprises a mould core, a rubber top mould, a fixed rubber ring, a rubber outer mould and a bottom mould, wherein the mould core is a cylinder with a vertical section in a U shape, a U-shaped opening of the mould core is downward, the bottom mould is in a ring shape, the bottom mould is fixedly arranged at the bottom of the mould core, the fixed rubber ring is fixedly sleeved at the lower end of the outer side wall of the mould core, the bottom of the fixed rubber ring is propped against the top of the bottom mould, the rubber outer mould is sleeved on the outer side wall of the fixed rubber ring, and the rubber top mould is fixedly arranged at the top of the rubber outer mould; the bottom die and the core are made of stainless steel, and N groups of circular perforation groups consisting of a plurality of first circular perforations are formed in the radial direction of the bottom die. The utility model has the advantages of convenient installation, even stress, stressed bottom, convenient suspension and time saving.
Description
Technical Field
The utility model relates to the field of isostatic compaction of ceramic blanks, in particular to an isostatic compaction die for a U-shaped ceramic blank.
Background
Isostatic compaction of ceramic blanks is a shaping method utilizing incompressibility of a liquid medium and uniform pressure transmission, namely, the pressure of a sample in a high-pressure container is the same as that of still water at the same depth, rubber or plastic is generally used as a die sheath material, liquid is used as a pressure transmission medium, the same pressure is applied to a powder blank in all directions, and the powder blank is pressed into a preset shape, so that the blank is provided for the next sintering, forging or hot isostatic pressing process.
At present, chinese patent application with publication number of CN106493834a discloses and a special mould of cold isostatic pressing blank of deep cavity ball top bowl type ceramic parts, including core and rubber external mold, wherein the core is semicircle form, the core outside lower extreme is equipped with outer mold fixation ring all around, the rubber external mold is the circular-arc that corresponds with the core, the inboard lower extreme of rubber external mold sets up on outer ring face of outer mold fixation ring, the mould cavity is constituteed to rubber external mold, outer mold fixation ring and core, the rubber external mold outside is equipped with mode locking throat hoop for locking rubber external mold, rubber external mold upper end is equipped with the feed inlet. The mold core is in interference fit connection with the outer mold fixing ring. The material of the rubber outer mold is rubber, the material of the core and the material of the outer mold fixing ring are not indicated, and in general, the metal materials are connected by interference fit, so that the bottom of the rubber outer mold cannot be subjected to the pressure in the isostatic pressing equipment when the patent is implemented, the bottom of the rubber outer mold cannot be stressed when the ceramic blank is molded, only the top and the side wall of the rubber outer mold are subjected to the pressure, and the ceramic blank is molded for a long time or is not compressed after being molded; the rubber and the metal can be connected by interference fit, if the outer die fixing ring is made of rubber, the clamping hoop is locked because the rubber has elasticity, the clamping hoop does not have deformability, when isostatic pressing is carried out, the isostatic pressing forming equipment can further extrude the outer die fixing ring and the rubber outer die, and if gaps are generated between the outer die fixing ring and the rubber outer die due to the action of elasticity, internal powder can be extruded through the gaps; moreover, the device is not provided with a suspended component which is convenient to lift, and the uniform stress of the device in the isostatic pressing device is difficult to ensure.
Disclosure of Invention
The utility model aims to provide the isostatic pressing mould for the U-shaped ceramic blank, which has the advantages of convenience in installation, uniform stress, bottom stress, convenience in suspension and time saving.
The technical aim of the utility model is realized by the following technical scheme:
the utility model provides a U type pottery blank isostatic compaction mould which characterized in that: the mold comprises a mold core, a rubber top mold, a fixed rubber ring, a rubber outer mold and a bottom mold, wherein the mold core is a cylinder with a vertical section in a U shape, a U-shaped opening of the mold core is downward, the bottom mold is in a circular ring shape, the bottom mold is fixedly arranged at the bottom of the mold core, the fixed rubber ring is fixedly sleeved at the lower end of the outer side wall of the mold core, the bottom of the fixed rubber ring is propped against the top of the bottom mold, the rubber outer mold is sleeved at the outer side wall of the fixed rubber ring, and the rubber top mold is fixedly arranged at the top of the rubber outer mold;
the bottom die and the core are made of stainless steel, and N groups of circular perforation groups consisting of a plurality of first circular perforations are formed in the radial direction of the bottom die.
The preferred scheme is as follows:
preferably: the inner diameter of the U-shaped opening of the core is consistent with the inner diameter of the bottom die, a plurality of threaded holes are formed in the circumferential array at the bottom of the core, second round perforations corresponding to the threaded holes are formed in the bottom of the bottom die, bolts are arranged in the second round perforations, and each bolt is in threaded connection with the corresponding threaded hole.
Preferably: the bottom of core has seted up first ring channel, the internal diameter of first ring channel is unanimous with the internal diameter of fixed rubber ring, fixed rubber ring joint is in first ring channel.
Preferably: the outer diameter of the fixed rubber ring is consistent with that of the rubber outer mold, a second annular groove is formed in the top of the fixed rubber ring, the inner diameter of the second annular groove is consistent with that of the rubber outer mold, and the lower end of the rubber outer mold is inserted into the second annular groove.
Preferably: the outer diameter of the rubber top die is consistent with that of the rubber outer die, a third annular groove is formed in the bottom of the rubber top die, the inner diameter of the third annular groove is consistent with that of the rubber outer die, and the upper end of the rubber outer die is inserted into the third annular groove.
Preferably: the external diameter of the bottom die is 1.2 times of the external diameter of the fixed rubber ring.
In summary, the utility model has the following beneficial effects:
1. through the arrangement of the bottom die and the fixed rubber ring, the fixed rubber ring can be supported, the fixed rubber ring is limited, and the isostatic pressing device can conveniently extrude the fixed rubber ring through a plurality of first round perforations of the bottom die;
2. through the setting of rubber top mould, can play and seal after the powder is poured into in the space that rubber solid fixed ring and rubber external mold formed, through the heavy-calibre, make things convenient for pouring in batches of powder, play save time's effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment;
FIG. 2 is a bottom side view of an embodiment;
fig. 3 is a cross-sectional view of an embodiment.
In the figure, 1, a core; 2. a rubber top mold; 3. fixing a rubber ring; 4. a rubber outer mold; 5. a bottom die; 6. a first circular perforation; 7. and (5) a bolt.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Wherein like parts are designated by like reference numerals.
1-3, the U-shaped ceramic blank isostatic compaction die comprises a core 1, a rubber top die 2, a fixed rubber ring 3, a rubber outer die 4 and a bottom die 5;
the bottom die 5 and the core 1 are made of stainless steel, and the rubber top die 2, the fixed rubber ring 3 and the rubber outer die 4 are made of rubber.
The core 1 is a cylinder with a vertical section in a U shape, the U-shaped opening of the core 1 is downward, the bottom die 5 is in a circular ring shape, the bottom die 5 is fixedly arranged at the bottom of the core 1, the fixed rubber ring 3 is fixedly sleeved at the lower end of the outer side wall of the core 1, the bottom of the fixed rubber ring 3 is propped against the top of the bottom die 5, the rubber outer die 4 is in a circular ring shape, the rubber outer die 4 is sleeved at the outer side wall of the fixed rubber ring 3, and the rubber top die 2 is fixedly arranged at the top of the rubber outer die 4.
The internal diameter of core 1"U ' shape opening part is unanimous with die block 5's internal diameter, and the bottom circumference array of core 1 has a plurality of screw holes, and the corresponding second circular perforation of a plurality of screw holes has been seted up to die block 5's bottom, all is equipped with bolt 7 in every second circular perforation, and every bolt 7 all is rather than the screw hole threaded connection that corresponds, can fix core 1 and die block 5, and then can prevent when pouring the powder, fixed rubber ring 3 drops.
The bottom of core 1 has seted up first ring channel, and the internal diameter of first ring channel is unanimous with the internal diameter of fixed rubber ring 3, and fixed rubber ring 3 joint is in first ring channel. The height of the first annular groove is one third of the height of the core 1, the height of the fixed rubber ring 3 is 1.05 times of the height of the first annular groove, the fixed rubber ring 3 is clamped in the first annular groove, then the bottom die 5 is fixedly connected with the core 1, the fixed rubber ring 3 can be slightly extruded while being clamped, and then the fixed rubber ring 3 is fixed.
The external diameter of die block 5 is 1.2 times of the external diameter of fixed rubber ring 3, and the radial direction of die block 5 has seted up the circular perforation group that N group is constituteed by a plurality of first circular perforation 6 moreover, consequently, be equipped with a plurality of first circular perforation 6 in the part of die block 5 protrusion fixed rubber ring 3, and then can conveniently hang it through a plurality of first circular perforation 6, simultaneously, because the setting of a plurality of bolts 7 for leave the clearance of bolt 7 head thickness between the bottom of die block 5 and the ground, consequently, can conveniently hang die block 5.
The external diameter of the fixed rubber ring 3 is consistent with the external diameter of the rubber outer mold 4, the top of the fixed rubber ring 3 is provided with a second annular groove, the internal diameter of the second annular groove is consistent with the internal diameter of the rubber outer mold 4, the lower end of the rubber outer mold 4 is inserted into the second annular groove, the height of the second annular groove is four fifths of the height of the fixed rubber ring 3, and the second annular groove can ensure that the rubber outer mold 4 is fully contacted with the fixed rubber ring 3.
The outer diameter of the rubber top die 2 is consistent with the outer diameter of the rubber outer die 4, a third annular groove is formed in the bottom of the rubber top die 2, the inner diameter of the third annular groove is consistent with the inner diameter of the rubber outer die 4, and the upper end of the rubber outer die 4 is inserted into the third annular groove. The height of the third annular groove is four fifths of the height of the rubber top die 2, so that the rubber outer die 4 and the rubber top die 2 can be fully contacted.
The Chinese patent application with the application publication number of CN115740448A discloses a cold isostatic pressing preparation method of a metal bar, which comprises the following steps: filling metal powder into a sheath, compacting, then filling the sealing plug into the sheath, and wrapping the joint of the sealing plug and the sheath by using an adhesive tape; sequentially wrapping with a plastic film and an adhesive tape, and then hooping the wrapped position by adopting a fastener to finish the wrapping and sealing; carrying out cold isostatic pressing treatment on the sealed sheath; and then opening the fastener, cutting off the adhesive tape and the plastic film, taking out the sealing plug, and demoulding to obtain the metal bar. Therefore, in the utility model, the rubber top die 2 and the rubber outer die 4 are fixed, the rubber ring 3 and the rubber outer die 4 are fixed, and the sealing method is adopted, namely, firstly, the joint between the rubber top die 2 and the rubber outer die 4 and the joint between the rubber ring 3 and the rubber outer die 4 are wrapped by using adhesive tapes, then, the rubber top die is wrapped by using plastic films and adhesive tapes in sequence, and then, the wrapped positions are hooped by using fasteners, so that the sheath sealing is completed.
The specific implementation process comprises the following steps:
step one: the fixed rubber ring 3 is sleeved in a first annular groove at the lower end of the core 1;
step two: the bottom die 5 is fixed at the bottom of the core 1 through a plurality of bolts 7;
step three: the lower end of the rubber outer die 4 is sleeved in a second annular groove for fixing the rubber ring 3;
step four: pouring a proper amount of powder into a cavity formed by the rubber outer mold 4, the mold core 1 and the fixed rubber ring 3;
step five: fixing the rubber top die 2 at the upper end of the rubber outer die 4 through a third annular groove;
step six: firstly wrapping the joint between the rubber top die 2 and the rubber outer die 4 and the joint between the fixed rubber ring 3 and the rubber outer die 4 by using an adhesive tape, then wrapping the joint by using a plastic film and the adhesive tape in sequence, and then hooping the wrapped position by using a fastener to finish the wrapping sealing;
step seven: the suspension equipment is used for suspending the sealed U-shaped ceramic blank isostatic pressing mould through a plurality of first round perforations 6 of the part of the bottom mould 5 protruding from the fixed rubber ring 3, and placing the sealed U-shaped ceramic blank isostatic pressing mould into the isostatic pressing equipment;
step eight: the isostatic pressing device works to extrude the rubber outer die 4 and the rubber bottom die 5, and extrude the fixed rubber ring 3 through a plurality of first round perforations 6, so that the isostatic pressing of the U-shaped ceramic blank can be completed.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (6)
1. The utility model provides a U type pottery blank isostatic compaction mould which characterized in that: the novel rubber mold comprises a mold core (1), a rubber top mold (2), a fixed rubber ring (3), a rubber outer mold (4) and a bottom mold (5), wherein the mold core (1) is a cylinder with a vertical section in a U shape, the U-shaped opening of the mold core (1) is downward, the bottom mold (5) is in a circular ring shape, the bottom mold (5) is fixedly arranged at the bottom of the mold core (1), the fixed rubber ring (3) is fixedly sleeved at the lower end of the outer side wall of the mold core (1), the bottom of the fixed rubber ring (3) is propped against the top of the bottom mold (5), the rubber outer mold (4) is sleeved at the outer side wall of the fixed rubber ring (3), and the rubber top mold (2) is fixedly arranged at the top of the rubber outer mold (4);
the bottom die (5) and the core (1) are made of stainless steel, and N groups of circular perforation groups consisting of a plurality of first circular perforation holes (6) are formed in the radial direction of the bottom die (5).
2. The isostatic pressing die for a U-shaped ceramic blank as defined in claim 1, wherein: the inner diameter of the U-shaped opening of the core (1) is consistent with the inner diameter of the bottom die (5), a plurality of threaded holes are formed in the bottom circumferential array of the core (1), second round perforations corresponding to the threaded holes are formed in the bottom of the bottom die (5), bolts (7) are arranged in each second round perforation, and each bolt (7) is in threaded connection with the corresponding threaded hole.
3. The isostatic pressing die for a U-shaped ceramic blank as defined in claim 1, wherein: the bottom of the core (1) is provided with a first annular groove, the inner diameter of the first annular groove is consistent with the inner diameter of the fixed rubber ring (3), and the fixed rubber ring (3) is clamped in the first annular groove.
4. The isostatic pressing die for a U-shaped ceramic blank as defined in claim 1, wherein: the outer diameter of the fixed rubber ring (3) is consistent with the outer diameter of the rubber outer die (4), a second annular groove is formed in the top of the fixed rubber ring (3), the inner diameter of the second annular groove is consistent with the inner diameter of the rubber outer die (4), and the lower end of the rubber outer die (4) is inserted into the second annular groove.
5. The isostatic pressing die for a U-shaped ceramic blank as defined in claim 4, wherein: the outer diameter of the rubber top die (2) is consistent with the outer diameter of the rubber outer die (4), a third annular groove is formed in the bottom of the rubber top die (2), the inner diameter of the third annular groove is consistent with the inner diameter of the rubber outer die (4), and the upper end of the rubber outer die (4) is inserted into the third annular groove.
6. The isostatic pressing die for a U-shaped ceramic blank as defined in claim 1, wherein: the outer diameter of the bottom die (5) is 1.2 times of the outer diameter of the fixed rubber ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321267075.7U CN219820066U (en) | 2023-05-23 | 2023-05-23 | Isostatic compaction die for U-shaped ceramic blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321267075.7U CN219820066U (en) | 2023-05-23 | 2023-05-23 | Isostatic compaction die for U-shaped ceramic blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219820066U true CN219820066U (en) | 2023-10-13 |
Family
ID=88279322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321267075.7U Active CN219820066U (en) | 2023-05-23 | 2023-05-23 | Isostatic compaction die for U-shaped ceramic blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219820066U (en) |
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2023
- 2023-05-23 CN CN202321267075.7U patent/CN219820066U/en active Active
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