CN106142641A - Isostatic pressed bag film is unstressed mould - Google Patents
Isostatic pressed bag film is unstressed mould Download PDFInfo
- Publication number
- CN106142641A CN106142641A CN201610543338.0A CN201610543338A CN106142641A CN 106142641 A CN106142641 A CN 106142641A CN 201610543338 A CN201610543338 A CN 201610543338A CN 106142641 A CN106142641 A CN 106142641A
- Authority
- CN
- China
- Prior art keywords
- pattern
- bag film
- mould
- die cavity
- unstressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 claims abstract description 22
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 239000010408 film Substances 0.000 claims description 74
- 239000010409 thin film Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000000462 isostatic pressing Methods 0.000 abstract description 19
- 230000003068 static effect Effects 0.000 abstract description 12
- 206010008469 Chest discomfort Diseases 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002939 deleterious effect Effects 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B12/00—Presses not provided for in groups B30B1/00 - B30B11/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/022—Moulds for compacting material in powder, granular of pasta form
- B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The present invention relates to the frock isostatic tooling supporting with isostatic pressing machine, the specially unstressed mould of isostatic pressed bag film.The thickness solving existing isostatic tooling cannot take into account its problem keeping certain rigidity and uniformly transferring static pressure.By porous rigidity pattern and small pieces of cloth used for patches, the bag film in the die cavity of pattern is constituted this mould；Also include the bottom vacuum tank with exhaustor, vacuum tank is furnished with on it and drives ring porous sealing gland, the pattern being evenly equipped with through hole on it is positioned at vacuum tank, sealing gland seals and is pressed on the die cavity port of pattern and makes the annular distance on sealing gland be directed at the die cavity of pattern, and the pattern die cavity outer portion of bag film annular distance in the middle part of gland is drawn.The present invention solves the problem that existing isostatic tooling exists；Its novel in structural design, uniqueness.Use mould of the present invention can save preforming operation, thus simplify the isostatic pressing operation of non-garden workpiece powder body, round piece also can be obtained more preferable shape density evenly.
Description
Technical field
The present invention relates to the frock isostatic tooling supporting with isostatic pressing machine；Powder body puts into mould, and mould is put again
Enter isostatic pressing machine and realize the isostatic pressing of powder body, specially the unstressed mould of isostatic pressed bag film.
Background technology
Be also required to the same with other powder body forming technique of isostatic pressing uses mould.Powder body is contained in mould by shake
Real or suitably extruding reaches certain first dress density so that it is has fixing shape and seals, being then placed on isostatic pressing machine
High pressure chest in, the static pressure of high pressure chest liquid pressure medium passes to powder body through mould and realizes isostatic pressing.Isostatic tooling
Displacement transfer static pressure to be passed through realizes the isostatic pressing of powder body, so generally with elastic elastomeric material or engineering plastics
Make.
Powder body material has following condition to require through isostatic pressing:
1) fill density at the beginning of powder body uniform as far as possible, be typically passed through ram-jolt or tamping.
2) shape after filling ram-jolt or tamping at the beginning of powder body to reach predetermined dimensional requirement.
3) static pressure passed over through mould is uniform, the requirement of the size pressing process to be met of static pressure.
Meet requirements above and just powder body material can be pressed into the workpiece that density shape is the most qualified.
Condition 1) and 2) require rubber pattern to have certain rigidity thus to keep certain hardness and thickness, condition 3) want
It is good that modulus tool elasticity is tried one's best, thin as far as possible.In the face of this conflicting requirement, we can only be according to the concrete shape of workpiece
Require to do the selection of formula of compromising or attend to one thing and lose sight of another with technology.
For longer cylindrical work, we select the thicker rubber mold with certain degree of hardness first to meet condition 1)
With 2), the static pressure of pressure medium is delivered to workpiece through thick mould, owing to it is circular, so it is gone back in a circumferential direction
It is uniform.But it is the most uneven to two Hydrostatic Transfer Device, it is possible to form error occurs, if error is less big or workpiece basis
Body just can proceed to sintering to form error is less demanding, the most also needs to do blank outer processed.
Isostatic pressing technology existing to non-circular workpiece cannot at present may be used with existing rubber mold direct pressing molding
The way of row is to increase one dry powder press preforming operation, and workpiece meets condition 1 through preforming) and 2), i.e. have big
The uniform density of body and fixing shape, then complete to seal by plastic sheeting Vacuum Package and to meet condition 3 uniform
Transmission static pressure, puts it into the existing isostatic pressing of liquid pressure medium interior-excess of isostatic pressing machine high pressure chest.
Summary of the invention
The present invention solves the thickness of existing isostatic tooling and cannot take into account its certain rigidity of holding and uniformly transfer static pressure
Problem, it is provided that a kind of unstressed mould of isostatic pressed bag film.
The present invention adopts the following technical scheme that realization: isostatic pressed bag film is unstressed mould, by porous just
Property pattern and small pieces of cloth used for patches bag film in the die cavity of pattern constitute；Bag film be divided into pattern mold cavity divide with pattern die cavity outside
Point；Shape, volume size that the pattern mold cavity of bag film divides match with the die cavity of pattern so that powder body adds bag film
And ram-jolt or tamping after shape consistent with the mold cavity shapes of pattern, divide and pattern without the pattern mold cavity by bag film
Inwall laminating deleterious effect；The length of the pattern die cavity outer portion of bag film meets the demand of bag film bag mouth Vacuum Package.
During work, in bag film, add quantitative powder ram-jolt or tamping, in the weight of powder body self makes the pattern die cavity of bag film
Part overlays the mould intracavity wall in pattern.After charging ram-jolt or tamping complete, bag film bag mouth carries out Vacuum Package to be completed to seal,
The high pressure chest that mould is put into isostatic pressing machine carries out isostatic pressing.Owing to bag film the most soft the thinnest natural energy meets bar
Part 3), the static pressure of liquid pressure medium can be uniformly transferred；Owing to there being porous rigidity pattern to have good outside bag film
Good rigidity and intensity, make powder body also can keep fixing shape during charging ram-jolt or tamping, meet condition 1)
With 2), thus solve the insurmountable problem of existing isostatic tooling.Implement isostatic pressed whole during, isostatic pressed
Pressure medium in high pressure chest is applied to static pressure on bag film through pattern, and is realized powder body by the deformation of bag film
Isostatic pressing.During whole, pattern does not stresses indeformable, therefore the most unstressed mould.
In order to improve efficiency and Forming Quality, the described unstressed mould of isostatic pressed bag film also includes that bottom is with aerofluxus
The vacuum tank of pipe, vacuum tank is furnished with on it and drives ring porous sealing gland, and porous rigidity pattern is positioned at vacuum tank, close
Sealed cover seals and is pressed on the die cavity port of pattern and makes the annular distance on sealing gland be directed at the die cavity of pattern, the pattern of bag film
Die cavity outer portion annular distance in the middle part of gland is drawn.During use, by the exhaustor evacuation of vacuum tank, bag film is vacuum tank
Inner chamber and isolated from atmosphere, bag film is close to the mould intracavity wall of pattern under atmospheric pressure, reduces the pattern of bag film with this
Mold cavity divides the impact on the shape after dress ram-jolt at the beginning of powder body.
The unstressed mould of isostatic pressed bag film of the present invention, owing to bag film is the thinnest, natural energy meets condition 3), i.e.
Uniform and undamped transmission static pressure；Owing to being provided with porous rigidity pattern outside bag film, in ram-jolt or tamping and
Under condition of negative pressure, bag film can be adjacent to the mould intracavity wall of pattern, even if also can keep fixing shape during ram-jolt or tamping
Shape, meets condition 1) and 2), thus solve the problem that existing isostatic tooling exists；Its novel in structural design, uniqueness.Adopt
Suppress non-circular workpiece with mould of the present invention and can save preforming operation, thus simplify the isostatic pressing work of powder body
Sequence.Compacting round piece also can obtain more preferable shape density evenly.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention, and in figure, bag film has fed bag mouth Vacuum Package, can put into
The high pressure chest of isostatic pressing machine carries out isostatic pressed；
Fig. 2 is another kind structural representation of the present invention；
Fig. 3 is the structural representation after the bag film charging bag mouth Vacuum Package of Fig. 2.
In figure: 1-pattern, 2-bag film, 3-vacuum tank, 4-cushion block, 5-sealing gland, 6-snap ring, 7-aerofluxus
Pipe, 8-bulge loop.
Detailed description of the invention
Isostatic pressed bag film is unstressed mould, the thin film in the die cavity of pattern by porous breathable rigidity pattern 1 and small pieces of cloth used for patches
Bag 2 is constituted；Bag film 2 is divided into pattern mold cavity and divides and pattern die cavity outer portion；The shape that the pattern mold cavity of bag film divides
Shape, volume size match with the die cavity of pattern 1 so that powder body add bag film and ram-jolt or tamping after powder body shape with lean on
The mold cavity shapes of mould is consistent, without being divided and pattern inwall laminating deleterious effect by the pattern mold cavity of bag film；Thin film
The length of the die cavity outer portion of bag meets the demand of bag film bag mouth Vacuum Package.The described unstressed mould of isostatic pressed bag film
Also include bottom with the vacuum tank 3 of exhaustor 7, vacuum tank 3 is furnished with on it and drives ring porous sealing gland 5, how empty ventilative
Rigidity pattern 1 is positioned at vacuum tank, and sealing gland 5 seals and is pressed on the die cavity port of pattern 1 and makes the annular distance on sealing gland
The die cavity of alignment pattern, the pattern die cavity outer portion of bag film 2 annular distance in the middle part of sealing gland 5 is drawn.
When being embodied as, under having suction function, shape that the pattern mold cavity of bag film 2 divides, volume size with lean on
The die cavity of mould is consistent, make the pattern mold cavity of bag film 2 divide under the effect of negative pressure along pattern mould intracavity wall tensioning spread
Exhibition (does not the most produce folding or fold), and the pattern mold cavity reducing bag film 2 further divides filling ram-jolt or tamping at the beginning of powder body
After the impact of shape.The implication of the thin film making bag film 2 refers to that its thickness compares existing isostatic tooling much thinner.From all
The angle of even transmission static pressure, thin film gets over Bao Yuehao.In view of strength problem, the selection of its thin and thick is relevant with the size of workpiece,
Big workpiece thin film will be thick.Its thickness can select in 0.1-0.5mm scope.Bag film can be selected for existing isostatic tooling
Elastomeric material or engineering plastics manufacture, but desired strength is some higher, Vacuum Package to be easy to, and such as selects the height of softness
The plastic sheeting of intensity, is also contemplated that more preferable new material occurs.The content of above about bag film belongs to those skilled in the art
Common knowledge or conventional select, so the concept of the application " thin film " is clearly to those skilled in the art.Specifically
During enforcement, pattern 1 is made up of porous breathable metal material.
When being embodied as, the thin film making bag film 2 is elastic film.So, the pattern die cavity to bag film can be reduced
The harsh size of interior part, shape need, under ram-jolt or tamping and suction function by elastic deformation die cavity along pattern
Inwall tensioning is sprawled, thus the tensioning by film film intracavity part being easier to realize bag film is sprawled.Such as select to produce contraception
It is exactly a good option that the material of set or balloon makes bag film.
When being embodied as, the annular distance in the middle part of sealing gland 5 is formed around being positioned at the bulge loop 8 of sealing gland upper surface, bulge loop 8
Upper ring cap has snap ring 6, during use, walks around bulge loop 8 from the pattern die cavity outer portion of the bag film 2 of annular distance extraction and is pushed down by snap ring 6,
Realize the location of the pattern die cavity outer portion of bag film 2, its effect one be convenient charging two be more fully vacuum tank with big
Air bound is exhausted.Cushion block 4 is further supported, it is therefore an objective to can reliably position for pattern, in shake bottom vacuum tank 3 and between bottom film 1
In fact or will not move during tamping.
Whole work process:
1, by Fig. 2, pattern 1, bag film 2 and vacuum tank each several part are assembled complete evacuation；
2, quantitative charging, ram-jolt or tamping, Vacuum Package such as Fig. 3；
3, open vacuum tank and take out pattern such as Fig. 1；
4, put isostatic pressing machine high pressure chest into and impose isostatic pressed；
5, cleaning liquid pressure medium is cut off bag film and is taken out the workpiece of compacting completion.
Claims (7)
1. the unstressed mould of isostatic pressed bag film, it is characterised in that by porous rigidity pattern (1) and small pieces of cloth used for patches in leaning on
Bag film (2) in the die cavity of mould is constituted；Bag film (2) is divided into pattern mold cavity and divides and pattern die cavity outer portion；Bag film
The shape divided of pattern mold cavity, volume size matches with the die cavity of pattern (1) so that powder body adds bag film and ram-jolt
Or tamping after shape consistent with the mold cavity shapes of pattern；The length of the pattern die cavity outer portion of bag film meets bag film bag mouth
The demand of Vacuum Package.
The unstressed mould of isostatic pressed bag film the most according to claim 1, it is characterised in that also include that bottom is with aerofluxus
The vacuum tank (3) of pipe (7), vacuum tank (3) is furnished with on it and drives ring porous sealing gland (5), and pattern (1) is positioned at vacuum tank,
Sealing gland (5) seals and is pressed on the die cavity port of pattern (1) and makes the annular distance on sealing gland be directed at the die cavity of pattern, thin film
The pattern die cavity outer portion of bag (2) annular distance from sealing gland (5) middle part is drawn.
The unstressed mould of isostatic pressed bag film the most according to claim 2, it is characterised in that the pattern mould of bag film (2)
The shape of intracavity part, volume size are consistent with the die cavity of pattern, make the pattern mold cavity of bag film (2) divide in negative pressure
Under effect, the mould intracavity wall tensioning along pattern is sprawled.
The unstressed mould of isostatic pressed bag film the most according to claim 1 and 2, it is characterised in that make bag film (2)
Thin film is elastic film.
5. according to the unstressed mould of isostatic pressed bag film described in Claims 2 or 3, it is characterised in that sealing gland (5) middle part
Annular distance be formed around being positioned at the bulge loop (8) of sealing gland upper surface, bulge loop (8) upper ring cap has snap ring (6).
The unstressed mould of isostatic pressed bag film the most according to claim 5, it is characterised in that vacuum tank (3) bottom with
By further supporting cushion block (4) between film (1) bottom.
7. according to the unstressed mould of isostatic pressed bag film described in claim 1 or 2 or 3, it is characterised in that pattern (1) is by many
Hole Vented metal material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543338.0A CN106142641B (en) | 2016-07-12 | 2016-07-12 | Isostatic pressed bag film is unstressed mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543338.0A CN106142641B (en) | 2016-07-12 | 2016-07-12 | Isostatic pressed bag film is unstressed mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106142641A true CN106142641A (en) | 2016-11-23 |
| CN106142641B CN106142641B (en) | 2017-12-19 |
Family
ID=58061701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610543338.0A Active CN106142641B (en) | 2016-07-12 | 2016-07-12 | Isostatic pressed bag film is unstressed mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106142641B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814337A (en) * | 2019-12-10 | 2020-02-21 | 横店集团东磁股份有限公司 | Simple low-cost cold isostatic pressing die and implementation method thereof |
| CN110935043A (en) * | 2019-12-19 | 2020-03-31 | 浙江相伴乳胶制品有限公司 | Sterilization method of latex product |
| CN110936654A (en) * | 2019-12-04 | 2020-03-31 | 中国工程物理研究院化工材料研究所 | Split type rubber mold sealing device and sealing method |
| CN113146804A (en) * | 2021-04-20 | 2021-07-23 | 江苏泰州麦迪医疗科技有限公司 | Ceramic femoral stem prosthesis manufacturing method and forming tool |
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| US4325183A (en) * | 1976-09-07 | 1982-04-20 | Welwyn Electric Limited | Process for producing an electrical resistor having a metal foil bonded to a ceramic or glass-ceramic substrate |
| CN1104409A (en) * | 1993-04-08 | 1995-06-28 | 埃里希内奇控股公司 | Tool for the isostatic pressing of handled containers |
| JP2004058349A (en) * | 2002-07-26 | 2004-02-26 | Meiki Co Ltd | Laminating apparatus and method |
| CN101112770A (en) * | 2006-07-26 | 2008-01-30 | 塔利亚蒂·鲁道夫方案合伙及两合公司 | An isostatic die for tile forming |
| CN103240413A (en) * | 2013-05-13 | 2013-08-14 | 宁海县大雅精密机械有限公司 | Method for preparing sheath for cold isostatic pressing |
| CN103753844A (en) * | 2013-12-21 | 2014-04-30 | 湖北鄂信钻石材料有限责任公司 | Vacuum pressing method for superfine carbon green body |
-
2016
- 2016-07-12 CN CN201610543338.0A patent/CN106142641B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325183A (en) * | 1976-09-07 | 1982-04-20 | Welwyn Electric Limited | Process for producing an electrical resistor having a metal foil bonded to a ceramic or glass-ceramic substrate |
| CN1104409A (en) * | 1993-04-08 | 1995-06-28 | 埃里希内奇控股公司 | Tool for the isostatic pressing of handled containers |
| JP2004058349A (en) * | 2002-07-26 | 2004-02-26 | Meiki Co Ltd | Laminating apparatus and method |
| CN101112770A (en) * | 2006-07-26 | 2008-01-30 | 塔利亚蒂·鲁道夫方案合伙及两合公司 | An isostatic die for tile forming |
| CN103240413A (en) * | 2013-05-13 | 2013-08-14 | 宁海县大雅精密机械有限公司 | Method for preparing sheath for cold isostatic pressing |
| CN103753844A (en) * | 2013-12-21 | 2014-04-30 | 湖北鄂信钻石材料有限责任公司 | Vacuum pressing method for superfine carbon green body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110936654A (en) * | 2019-12-04 | 2020-03-31 | 中国工程物理研究院化工材料研究所 | Split type rubber mold sealing device and sealing method |
| CN110814337A (en) * | 2019-12-10 | 2020-02-21 | 横店集团东磁股份有限公司 | Simple low-cost cold isostatic pressing die and implementation method thereof |
| CN110935043A (en) * | 2019-12-19 | 2020-03-31 | 浙江相伴乳胶制品有限公司 | Sterilization method of latex product |
| CN113146804A (en) * | 2021-04-20 | 2021-07-23 | 江苏泰州麦迪医疗科技有限公司 | Ceramic femoral stem prosthesis manufacturing method and forming tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106142641B (en) | 2017-12-19 |
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Effective date of registration: 20190202 Address after: 030008 No. 11 North of Shanxi Guangli Machinery Processing Industrial Park, Jiancao District, Taiyuan City, Shanxi Province Patentee after: Shanxi Jinkaiyuan Industry Co., Ltd Address before: 030008 No. 11, North District, Guangli Industrial Park, Yangqu Town, Jiancao District, Taiyuan City, Shanxi Province Patentee before: Dong Zhongtian |