CN106738560B - Isostatic cool pressing gum cover molding die and its forming method - Google Patents
Isostatic cool pressing gum cover molding die and its forming method Download PDFInfo
- Publication number
- CN106738560B CN106738560B CN201611217918.7A CN201611217918A CN106738560B CN 106738560 B CN106738560 B CN 106738560B CN 201611217918 A CN201611217918 A CN 201611217918A CN 106738560 B CN106738560 B CN 106738560B
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- mold
- internal model
- gum cover
- external mold
- die holder
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/102—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C2043/3205—Particular pressure exerting means for making definite articles
- B29C2043/3222—Particular pressure exerting means for making definite articles pressurized gas, e.g. air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/56—Compression moulding under special conditions, e.g. vacuum
- B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
- B29C2043/562—Compression moulding under special conditions, e.g. vacuum under vacuum conditions combined with isostatic pressure, e.g. pressurising fluids, gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/56—Compression moulding under special conditions, e.g. vacuum
- B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
- B29C2043/563—Compression moulding under special conditions, e.g. vacuum under vacuum conditions combined with mechanical pressure, i.e. mould plates, rams, stampers
Abstract
A kind of isostatic cool pressing gum cover molding die, it is characterised in that including die holder, internal model, external mold and exhaust tube, internal model is set to aforementioned die holder upper surface；External mold is set to aforementioned die holder upper surface and is sheathed on internal model periphery, and the type chamber being adapted to gum cover is formed between the external mold inner sidewall and the lateral wall of internal model；Exhaust tube, which runs through, to be set on external mold above-mentioned, and inner end is connected to type chamber above-mentioned, and outer end can be connect with air extractor, and the inner end of the exhaust tube is arranged by the top surface of plesiotype chamber.The invention also discloses the methods using mold molding gum cover.Compared with the prior art, the advantages of the present invention are as follows: it is easy to manufacture, manufacture the features such as quick, at low cost.
Description
Technical field
The present invention relates to a kind of mold, which can be used to make isostatic cool pressing gum cover, and the invention also discloses logical
The method for crossing mold molding gum cover.
Background technique
Isostatic cool pressing technology refers to the equal pressing forming technology carried out under room temperature environment, is usually wrapped with rubber and plastics
Mold material, using liquid as pressure medium, pressure is 100~630MPa, is mainly used for powder forming.The purpose is to be next
Step sintering, the processes such as forging or hot isostatic pressing provide prefabrication.
Cold isostatic compaction is one of most important prototyping method of powder metallurgy, and when molding, selected sheath material was to pressure
Base yield rate and product quality have a direct impact.Currently, the cold isostatic compaction of field of powder metallurgy uses various rubber materials,
Such as silicon rubber, natural emulsion, polyurethane, nitrile rubber material, by the methods of die casting, brushing, dipping, casting in metal mold
It is process in tool.The base mould material and processing charges of metal material manufacture are higher, and the manufacture of gum cover need to be in special manufacturer
Family carries out, thus the manufacturing cycle is long, at high cost, and especially for Powder Metallurgy Industry, largely existing single-piece, small quantities of product come
It says, die cost and manufacturing cycle seem especially prominent in entire product production flow.In addition metal die is not easy to scarce
It falls into and is adjusted or repairs, the hardness of jacket is also difficult to control, and in isostatic cool pressing processing, is easy to produce dead angle, causes product
Scrappage it is high.
A kind of improved forming method is disclosed in the prior art, sees the middle promulgated by the State Council of Patent No. ZL201310199312.5
A kind of bright patent " preparation method of sheath for cold isostatic pressing " (application publication number CN103240413A), this includes the following steps
It is combined into the shape of product size requirement after cardboard is cut, makes upper shield up and down, the inside and outside of upper shield up and down is covered with
Film；It is covered with after upper shield is completely dried up and down of film after described, one of them set covers loading powder, by powder jolt ramming
After close another upper shield；The upper shield up and down equipped with powder obtained is integrally packaged with vacuum bag, then to vacuum bag
Extraction air simultaneously seals；Using stripped after cold isostatic compaction it is described up and down upper shield.This method have it is at low cost, it is easy to manufacture
Advantage.
Summary of the invention
The technical problem to be solved by the present invention is in addition provided for the above-mentioned state of the art it is a kind of low in cost and
Gum cover manufactures easy isostatic cool pressing gum cover molding die.
Another technical problem to be solved by this invention is in addition to provide a kind of cost for the above-mentioned state of the art
Cheap and gum cover manufactures easy isostatic cool pressing gum cover forming method.
The technical scheme of the invention to solve the technical problem is: a kind of isostatic cool pressing gum cover molding die,
It is characterized by comprising
Die holder；
Internal model is set to aforementioned die holder upper surface；
External mold set on aforementioned die holder upper surface and is sheathed on internal model periphery, the lateral wall of the external mold inner sidewall and internal model it
Between form the type chamber that is adapted to gum cover；And
Exhaust tube, through being set on external mold above-mentioned, inner end is connected to type chamber above-mentioned, and outer end can connect with air extractor
It connects, the inner end of the exhaust tube is arranged by the top surface of plesiotype chamber.
Further, the exhaust tube is externally provided with vacuum pump and the vacuum valve for opening and closing exhaust tube.
A kind of forming method of isostatic cool pressing gum cover, this method use molding die, it is characterised in that the molding
Mold includes
Die holder；
Internal model is set to aforementioned die holder upper surface；
External mold set on aforementioned die holder upper surface and is sheathed on internal model periphery, the lateral wall of the external mold inner sidewall and internal model it
Between form the type chamber that is adapted to gum cover；And
Exhaust tube, through being set on external mold above-mentioned, inner end is connected to type chamber above-mentioned and can take out the intracavitary air of type
Out；
Die holder, internal model and external mold above-mentioned are all made of polystyrene foam production；
Using following steps:
1. mold is uniformly coated with polyvinyl acetate emulsion, the hole of capped polystyrene foam surface；
2. liquid-state silicon gel is poured into container, be added curing agent, the amount that curing agent is added be liquid-state silicon gel weight 1%~
2%, it stirs evenly, then the row of vacuumizing steeps, and obtains glue；
3. it carries out the type chamber of mold to vacuumize operation by exhaust tube,
4. the type of glue injection mold is intracavitary, glue flows to cavity bottom and is gradually filled with type chamber, until glue reaches
When exhaust tube inner end, exhaust tube stopping is vacuumized, and is continued to inject glue and is covered internal model and covering part to being full of entire mold
The thickness divided reaches sets requirement, stops injection glue；
5. standing, solidify, removes external mold, deviate from gum cover after molding from internal model.
Preferably, the liquid-state silicon gel is 8301 liquid-state silicon gels, 8110 liquid-state silicon gels or caoutchouc latex.
Preferably, the die holder, internal model and external mold are all made of hot cut method forming, then gluing is integrated.
Further, 1. middle polyvinyl acetate emulsion uniformly coats mold once step, after then being spontaneously dried under room temperature,
Uniformly coating again, spontaneously dries under room temperature, for use again.
Compared with the prior art, the advantages of the present invention are as follows: gum cover is manufactured with market liquid mold silica gel, foam mould
Instead of metal mold, since market liquid and mold silica gel and polystyrene foam plastics have easy to manufacture, manufacture is fast
The features such as fast, at low cost.Especially mold parts directly can quickly heat cutting manufacture, form complete mould by bonding
Tool；Mold is light to be easily portable, by manual operations can produce satisfied isostatic cool pressing gum cover, greatly reduce gum cover and
Die manufacturing cost shortens manufacturing time.
Detailed description of the invention
Fig. 1 is mold structure diagram in embodiment 1.
State diagram when Fig. 2 is glue addition in embodiment 1.
Fig. 3 is state diagram after solidifying in embodiment 1.
Fig. 4 is the gum cover cross-sectional view obtained.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1, as shown in Figure 1, the isostatic cool pressing gum cover molding die in the present embodiment include die holder 1, internal model 2,
External mold 3 and exhaust tube 5.Internal model 2 is set to 1 upper surface of die holder；External mold 3 is set to 1 upper surface of die holder and is sheathed on 2 periphery of internal model, should
The type chamber 4 being adapted to gum cover is formed between 3 inner sidewall of external mold and the lateral wall of internal model 2.
Exhaust tube 5, which runs through, to be set on external mold, and inner end is connected to type chamber 4, and outer end can be connect with air extractor, in the present embodiment
Air extractor include vacuum pump 6 and the vacuum valve 7 for opening and closing exhaust tube 5, the top surface of plesiotype chamber 4 is leaned in the inner end of exhaust tube 5
Setting.
Die holder 1, internal model 2, external mold 3 all and with fervent method are shaped using polystyrene foam, and then bonding becomes one
A unitary mould type chamber 4 is identical as the gum cover size and shape of required preparation.
Mold is uniformly brushed 1 time with commercially available building white glue with vinyl (polyvinyl acetate emulsion), after being spontaneously dried under room temperature, weight
The multiple process is primary, with the hole on enclosing foam surface.
The mold made is laid flat on the ground, exhaust tube 5 is inserted into external mold 3 from the contour position in side and internal model 2,
Head is concordant with 3 inner wall of external mold.
Commercially available 8310 liquid-state silicon gel is taken out according to the required weight and pours into container 9 (as shown in Figure 2), is added with syringe
1%-2% curing agent, stirs evenly, and is then placed in the row of vacuumizing in vacuum machine and steeps 5 minutes~10 minutes, obtains glue.Specifically
Ground, curing agent use commercially available RTY-2 condensed room temperature vulcanized silicone rubber curing agent, can also oneself according to application No. is
201310489281.7 Chinese invention patent application a kind of " system of bicomponent condensed type room temperature sulfidization silicon rubber curing agent is disclosed
Standby side " it is prepared by (Publication No. CN103554915A).
Start vacuum pump 6, opens vacuum valve 7, type chamber 4 is vacuumized.
As shown in Fig. 2, glue is then injected mold.8310 silica gel flow to mold bottom, are gradually filled with mold cavity 4,
When glue reaches 5 position of exhaust tube, stop vacuum pump 6 and work, to prevent glue from sucking vacuum pump 6.Continue to inject glue extremely
Full of mold.
As shown in connection with fig. 3, the time for 24 hours is placed, after glue is fully cured, external mold 3 is removed, takes off gum cover from internal model 2
Out, satisfactory gum cover finished product (as shown in Figure 4) is obtained.
Embodiment 2, the liquid-state silicon gel in the present embodiment use commercially available 8110 liquid-state silicon gel, mold and other operating procedures ginseng
Examine embodiment 1.
Embodiment 3: the liquid-state silicon gel in the present embodiment uses commercially available caoutchouc latex, mold and other operating procedures ginseng
Examine embodiment 1.
Claims (2)
1. a kind of forming method of isostatic cool pressing gum cover, this method uses molding die, it is characterised in that the shaping mould
Tool includes
Die holder；
Internal model is set to aforementioned die holder upper surface；
External mold set on aforementioned die holder upper surface and is sheathed on internal model periphery, shape between the external mold inner sidewall and the lateral wall of internal model
At the type chamber being adapted to gum cover；And
Exhaust tube, through being set on external mold above-mentioned, inner end is connected to type chamber above-mentioned and can extract the intracavitary air of type out, institute
The inner end for stating exhaust tube is arranged by the top surface of plesiotype chamber；
Die holder, internal model and external mold above-mentioned are all made of polystyrene foam production；
Using following steps:
1. mold is uniformly coated with polyvinyl acetate emulsion, the hole of capped polystyrene foam surface；
2. liquid-state silicon gel is poured into container, curing agent is added, the amount that curing agent is added is the 1%~2% of liquid-state silicon gel weight, is stirred
It mixes uniformly, then the row of vacuumizing steeps, and obtains glue；
3. it carries out the type chamber of mold to vacuumize operation by exhaust tube,
4. the type of glue injection mold is intracavitary, glue flows to cavity bottom and is gradually filled with type chamber, until glue reaches pumping
When pipe inner end, exhaust tube stopping is vacuumized, and is continued to inject glue and is covered internal model and covering part to being full of entire mold
Thickness reaches sets requirement, stops injection glue；
5. standing, solidify, removes external mold, deviate from gum cover after molding from internal model；
Die holder, internal model and the external mold is all made of hot cut method forming, and then gluing is integrated；
1. middle polyvinyl acetate emulsion uniformly coats mold once step, after then spontaneously drying under room temperature, uniformly applies again
It covers, is spontaneously dried under room temperature again, for use.
2. the forming method of isostatic cool pressing gum cover according to claim 1, it is characterised in that the liquid-state silicon gel is
8301 liquid-state silicon gels, 8110 liquid-state silicon gels or caoutchouc latex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217918.7A CN106738560B (en) | 2016-12-26 | 2016-12-26 | Isostatic cool pressing gum cover molding die and its forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217918.7A CN106738560B (en) | 2016-12-26 | 2016-12-26 | Isostatic cool pressing gum cover molding die and its forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106738560A CN106738560A (en) | 2017-05-31 |
| CN106738560B true CN106738560B (en) | 2019-07-19 |
Family
ID=58926012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611217918.7A Active CN106738560B (en) | 2016-12-26 | 2016-12-26 | Isostatic cool pressing gum cover molding die and its forming method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108456337B (en) * | 2018-03-05 | 2020-11-20 | 北京科技大学 | Method for preparing cold isostatic pressing sheath through 3D cold printing |
| CN108380818B (en) * | 2018-04-12 | 2020-01-14 | 北京科技大学 | Method for preparing metal-based SHS (hard wearing layer) wear-resistant coating by combining cold isostatic pressing with vacuum lost foam |
| 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 |
| CN113815232B (en) * | 2021-08-31 | 2022-10-14 | 华中科技大学 | Isostatic pressing sheath and isostatic pressing forming method |
| CN114030217B (en) * | 2021-11-29 | 2023-06-20 | 航天特种材料及工艺技术研究所 | Cylindrical nano heat insulation material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020536Y (en) * | 2007-04-29 | 2008-02-13 | 西北有色金属研究院 | Jacket for cold isostatic moulding in powder metallurgy |
| CN201361937Y (en) * | 2009-03-19 | 2009-12-16 | 宜兴新威利成耐火材料有限公司 | Isostatic-pressing refractory mold |
| CN201629524U (en) * | 2009-12-30 | 2010-11-10 | 浙江金凤凰电气有限公司 | Manufacture equipment for silicon rubber cable accessories without longitudinal joints |
| CN102642314A (en) * | 2011-04-07 | 2012-08-22 | 江苏九鼎新材料股份有限公司 | Method for manufacturing conical composite rod |
| CN105043281A (en) * | 2015-05-12 | 2015-11-11 | 东北电力大学 | Fiber grating strain sensor and manufacturing method and forming die thereof |
-
2016
- 2016-12-26 CN CN201611217918.7A patent/CN106738560B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020536Y (en) * | 2007-04-29 | 2008-02-13 | 西北有色金属研究院 | Jacket for cold isostatic moulding in powder metallurgy |
| CN201361937Y (en) * | 2009-03-19 | 2009-12-16 | 宜兴新威利成耐火材料有限公司 | Isostatic-pressing refractory mold |
| CN201629524U (en) * | 2009-12-30 | 2010-11-10 | 浙江金凤凰电气有限公司 | Manufacture equipment for silicon rubber cable accessories without longitudinal joints |
| CN102642314A (en) * | 2011-04-07 | 2012-08-22 | 江苏九鼎新材料股份有限公司 | Method for manufacturing conical composite rod |
| CN105043281A (en) * | 2015-05-12 | 2015-11-11 | 东北电力大学 | Fiber grating strain sensor and manufacturing method and forming die thereof |
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| CN106738560A (en) | 2017-05-31 |
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