CN203496198U - Vacuum-film casting system - Google Patents
Vacuum-film casting system Download PDFInfo
- Publication number
- CN203496198U CN203496198U CN201320548037.9U CN201320548037U CN203496198U CN 203496198 U CN203496198 U CN 203496198U CN 201320548037 U CN201320548037 U CN 201320548037U CN 203496198 U CN203496198 U CN 203496198U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- mould
- film
- casting
- running gate
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a vacuum-film casting system. The vacuum-film casting system is characterized by comprising a mold, a vacuum film, a vacuum pump and mixing equipment, wherein the vacuum film is coated at the periphery of the mold to form a vacuum space; the vacuum pump is connected with a vacuumizing port of the mold by a vacuum pipeline; and the mixing equipment is connected with a casting port of the mold by a filling pipe. The vacuum-film casting system provided by the utility model has the advantages that when the vacuum-film casting system is adopted for casting, the casting can be carried out in the absence of special vacuum equipment under normal pressure, and is not subjected to the limitation of equipment and space and the operability is flexible; the vacuum film replaces the vacuum casting tank, so the required cost is lower, simple and easy effects are achieved, the application range is wide, and the suitability for on-site casting, small-product production and experimental casting and the like is achieved.
Description
Technical field
The utility model belongs to the vacuum casting method field of resin material, is specifically related to a kind of vacuum diaphragm running gate system, vacuum film is coated on to die surface formation vacuum space and pours into a mould.
Background technology
Due to resin, especially epoxy resin cured product has good electrical insulation properties, moisture-proof and chemical resistance etc., again because it has good processability, when curing, do not produce volatile matter, during moulding, shrinkage factor is little, make it under vacuum condition, can obtain the cast product without air gap, current transformer, cable coupling box and cable termination from small-sized electronic component, precision instrument, military project communication product to large-scale transformer, motor coil and High-Voltage Electrical Appliances.Cast small product size is little, quality is light, has improved reliability and the service life of insulation quality and product, thereby has been widely used in electrical industry.
Since 20 century 70s, various countries' exploratory development the hermetically sealed new technology of a series of epoxy resin, as pressurization gel method, liquid injection molding technique, automatic pressure gelation process, vacuum pressure gelation technique, automatic demoulding gel process etc.Except these new technologies, common method, is also that the method being most widely used has vacuum pouring method, normal pressure casting method etc. at present.The advantage that vacuum pouring method is the most outstanding is exactly to remove cast product inside and surperficial air gap and bubble, reduces internal stress, prevents crackle etc.In order to reach this purpose, must select suitable mould material, use suitable vacuum pouring equipment, strictly control raw-material pretreatment, batch mixing, cast and condition of cure etc.And normal pressure casting method is compared vacuum pouring method, apply more flexibly, can reduce costs, simplify technique, be applicable to small-sized a small amount of cast product, cast-in-site, to less demanding product of insulating properties etc.
But, not yet occur at present a kind of can be by the normal-temperature vacuum casting together with the advantages of vacuum pouring method and normal pressure casting method, in the preparation of naval stores, need be a kind ofly applicable to insulating properties atmospheric pressure environment, that improve cast product, that reduce the bubble that produces in casting process and air gap and simplify the vacuum pouring method that technique reduces costs.
Utility model content
In order to address the above problem, the utility model relates to a kind of vacuum diaphragm running gate system and the pouring procedure based on this system, and the method is coated on die surface formation vacuum space by vacuum film and pours into a mould.The method is by together with the advantages of vacuum pouring method and normal pressure casting method, and the naval stores quality obtaining is high, and process costs is low, wide accommodation.
Vacuum diaphragm running gate system of the present utility model comprises: mould; Vacuum diaphragm, described vacuum diaphragm is coated on surrounding's formation vacuum space of described mould; Vavuum pump, is connected in the vacuum orifice of described mould by vacuum pipe; And mixing equipment, by filling tube, be connected in the sprue gate of described mould.
In vacuum diaphragm running gate system as above, preferably: the junction between described vacuum diaphragm and described filling tube is sealed by sealing joint strip, and the junction between described vacuum diaphragm and described vacuum pipe is sealed by sealing joint strip.
In vacuum diaphragm running gate system as above, preferably: be connected with liquid material collector on the vacuum pipe between described vavuum pump and described mould, be provided with material feeding valve between described filling tube and described mixing equipment.
In vacuum diaphragm running gate system as above, preferably: be provided with vacuum meter between described liquid material collector and described mould, be provided with rising head on described mould.
In vacuum diaphragm running gate system as above, preferably: described vacuum diaphragm running gate system is that electrical power transmission system median generatrix carries out the vacuum diaphragm running gate system that vacuum pouring is used.
The utility model has following beneficial effect compared to existing technology:
(1) because the utility model adopts vacuum film to be coated on die surface, form the method that pour into a mould vacuum space again, so compare normal pressure casting method, can overcome and there is the problem that bubble is more, insulating properties are poor; Compare vacuum pouring method, need not use vacuum pouring tank, both provided cost savings, also saved space.
(2) because the utility model is poured into a mould without special vacuum equipment under normal pressure, so can not be subject to equipment and space constraints, according to field condition, suit measures to local conditions to work out a scheme, there is operability flexibly.
(3) because vacuum space of the present utility model is coated on die surface by vacuum film and produces, replace vacuum pouring tank, so required cost is lower, simple and easy to do, adaptive surface is extensive, except cast-in-site, also be applicable to smallclothes production, the situations such as prototype version cast.
Accompanying drawing explanation
Fig. 1 is the vacuum diaphragm running gate system annexation schematic diagram of applying in the method for vacuum diaphragm cast.
Fig. 2 is the vacuum diaphragm running gate system annexation schematic diagram of a kind of optimization of applying in the method for vacuum diaphragm cast.
Reference numeral:
1: mould, 2: vacuum tube, 3: vacuum film, 4: filling tube,
5: vacuum meter, 6: vavuum pump, 7: mixing equipment, 8: liquid material collector.
The specific embodiment
Vacuum diaphragm running gate system of the present utility model, as shown in Figure 1, comprises mould 1, vacuum tube 2, filling tube 4, vavuum pump 6 etc.In this vacuum diaphragm running gate system, mould 1 outer wrap has vacuum film 3; The cast gate place of mould 1 is connected with one end of mixing tube 4, and the other end of mixing tube 4 is connected with the mixing tank as mixing equipment 7 by sprue valve (not shown); The vacuum orifice of mould 1 is connected with one end of vacuum tube 2, and the other end of vacuum tube 2 is connected with vacuum meter 5; Vacuum meter 5 is connected (being connected and can connecting by a tee pipe fitting between vacuum meter 1 and vacuum tube 1,2) by another vacuum tube 2 again with vavuum pump 6.
In this vacuum diaphragm running gate system, the quantity of vacuum tube 2 is 2, and caliber is 1cm, and length is 2m; The quantity of filling tube 4 is 1, and caliber is 1cm, and length is 3m.
Preferably, realizing vacuum diaphragm pouring procedure of the present utility model vacuum diaphragm running gate system used can also be as shown in Figure 2.In Fig. 2, compared to Figure 1, between vacuum meter 5 and vavuum pump 6, by vacuum tube 2, be connected with liquid material collector 8(and be called again liquid trap).The effect of this liquid material collector is to prevent from while vacuumizing pouring in down a chimney and causing vavuum pump to damage because of the resin mixture that the reasons such as misoperation cause, plays a cushioning effect.For the size of liquid trap, shape, material all without specific (special) requirements, as long as can meet good seal, can bear relevant pressure and have certain volume.
In this vacuum diaphragm running gate system, the quantity of vacuum tube 2 is 3, and caliber is 1cm; The length of the vacuum tube 2 between the vacuum tube 2 between mould 1 and vacuum meter 5, vacuum meter 5 and feed liquid collector 8 is 2m, and the length of the vacuum tube 2 between feed liquid collector 7 and vavuum pump 6 is 5m; The quantity of filling tube is 1, and caliber is 1cm, and length is 3m.
The vacuum tube of system of the vacuum diaphragm cast of the present embodiment and the quantity of filling tube are determine according to mould volume and structure, for common vacuum diaphragm pouring technology, its quantity and position are not had to requirement deliberately.With the structure of the auxiliary pipings such as mozzle, be mainly also for the particularity of mould and fixed, be mostly arranged in by (or in mould) on mould.In addition, although provided the size of each pipeline at this, can adjust according to actual conditions.
The following describes the method that vacuum diaphragm running gate system how to use shown in Fig. 1, Fig. 2 is carried out vacuum diaphragm cast of the present utility model, the main points of the method are that vacuum film is coated on to die surface to be formed vacuum space and pour into a mould.The method comprises the following steps:
Step 1, preparation and installation:
A, after the inwall smearing release agent of mould 1, by this mould 1 assembled formation; By mould itself with the parts such as conductor, coil or inserts by precalculated position, place;
B, one end of filling tube 4 is placed in to the cast gate place of mould 1 and fixes with adhesive tape, the other end of filling tube 4 is drawn, and is connected with the discharging opening of mixing equipment 7;
C, one end of vacuum tube 2 is connected and is fixed with adhesive tape with the vacuum orifice of mould 1, the other end of this vacuum tube 2 is drawn, and is connected with one end of vacuum meter 5;
D, the other end of vacuum meter 5 is connected with one end of another vacuum tube 2, then the other end of this vacuum tube 2 is connected with vavuum pump 6;
In addition, also can, between vacuum meter 5 and vavuum pump 6, by vacuum tube 2, connect a feed liquid collector 8;
E, with vacuum film 3, mould 1 is all coated;
If mould 1 with sharp-pointed corner, vacuumizes the rear vacuum diaphragm 3 that easily punctures, the situation of being stung for preventing vacuum film, applies the soft materials such as cloth by this sharp-pointed corner parcel, guarantees that vacuum film 3 does not have breakage; If mould 1 is own without the sharp-pointed corner that causes vacuum film 3 breakages, without wrapping up in advance corner;
F, the vacuum film 3 that is coated on mould 1 outside is carried out to encapsulation process, form the space of being wrapped up by vacuum film 3; Encapsulation process is realized by commercially available sealing joint strip; Encapsulation process comprises the sealing between sealing, vacuum film and the mould between vacuum film, why the place of vacuum that sealing between the sealing between the sealing between vacuum film and vacuum tube, vacuum film and filling tube, filling tube and mixing equipment etc. are various affects the space of vacuum film 3 parcels (mentions sealing between vacuum film and the sealing between vacuum film and mould, be because the vacuum film that sometimes uses of the utility model be a piece of paper sheet without sealing film, a rather than pocket-like structure.Want to form confined space, be as making pocket, with sealing joint strip, vacuum film is bonding, according to actual conditions, some limits are with sealing joint strip, two vacuum films to be sealed, some limits are that vacuum film and mould are directly sealed.Two sealings here namely two kinds of situations in seal process are enumerated).
This is tested vacuum film used and can be commercially available various vacuum films, there are certain thickness and toughness (such as 30 μ m～70 μ m, regular size is 50 μ m and 65 μ m at present), preferably there is certain transparency (reserving mixed material such as observing rising head described later place).
After A, above-mentioned all devices connect, first close the sprue valve of mixing equipment, and open the valve of vavuum pump, the inside cavity of mould 1 is vacuumized to processing and (in fact namely the space of vacuum film parcel is vacuumized to processing, because the parcel space of vacuum diaphragm is communicated with the space in cavity body of mould, the former is greater than the latter spatial dimension, but the former with the latter space is more approaching, more saves material.In addition, because the size of the cast gate of mould is generally greater than the size of filling tube, so the space of vacuum diaphragm parcel is mainly connected with in cavity body of mould by cast gate, rising head.In addition, mould is all generally knockdown, in the part of splicing, seals poorly, also makes the two space be connected), the time is 10-50s, is preferably 30s, then closes the valve of vavuum pump; Check and whether occur because sealing the improper gas leak phenomenon causing, if any gas leak phenomenon, re-start encapsulation process and vacuumize and process until qualified;
B, open again the valve of vavuum pump, the space of vacuum film parcel is vacuumized to process and vacuumize processing, time is 1～5 minute, be preferably 3 minutes, until reach the vacuum pressure value of regulation, while measuring such as employing vacuum meter 5, vacuum value is 300～1000Pa, be preferably 650Pa and stable (time vacuumizing is determined by mould volume and required force value, the mould small volume of this test, general 2-3min just can meet the requirements of force value; In addition, vacuum pressure value is also to determine according to the technological requirement of different resins system, and such as being also 700Pa, the technological requirement of general electric information resin system is in 2000Pa);
A, until material batch mixing in mixing equipment 7, after completing, obtain compound, can pour into a mould; Open the sprue valve of mixing equipment 7, allow compound along filling tube 4, flow into the cast gate of mould 1, until there is mixture flow to go out the rising head of mould 1; The sprue valve of closing again mixing equipment 7, completes cast;
In casting process, the valve of vavuum pump 6 remains open mode, take and guarantees that the pressure in vacuum film coating space is setting value; If between casting cycle, force value has larger variation, can be that (this setting value is 300～2000Pa to setting value by regulating the valve of vavuum pump 6 to keep force value, such as 500Pa, 700Pa, 900Pa, 1100Pa, 1300Pa, 1500Pa, 1700Pa, preferably below 1000Pa, 650Pa and following more preferably);
After B, casting complete, first close vavuum pump 6, then remove all pipelines and vacuum film 3
, separate except vacuum state;
Step 4, cure and demold:
Mould after casting complete 1 is cured to the demoulding and processes, obtain resin.It can be the normal temperature cure demoulding that cure and demold is processed; Also can be the hot setting demoulding.
The method of the normal temperature cure demoulding is: mould is carried out to the demoulding (can determine the concrete time according to the technological requirement of concrete resin system) after static a period of time, generally after 12-36 hour, get final product the demoulding, after being preferably 24 hours, carry out again the demoulding, according to the requirement of the resin technique of cast, be cured again afterwards, obtain resin; The requirement of this resin technique is provided by concrete resin producer that (technique of every cover resin system is all not quite similar, and the recommendation technique that the general Dou Shi resin of the technique producer adopting now provides is carried out Improvement and perfection to technique again in the process of using.Resin producer, model difference, the process program adopting is all different).
The method of the hot setting demoulding is: mould is put into curing oven, and (conventional high temperature is often referred to 60～120 ℃ by cure profile, to carry out the hot setting demoulding.), obtain resin; Cure profile is also provided by concrete resin producer, and user in use can suitably adjust.
As this pouring procedure material used, can be epoxy resin, this epoxy resin comprises bisphenol A epoxide resin, modified epoxy, novolac epoxy resin, one or more in vinylite, phenolic resins, brominated epoxy resin and aqueous cycloaliphatic epoxy resin etc., can add filler or not add filler; Resin used can also be polyurethane resin, polyimide resin (as BMI (BMI) resin) etc. other can adopt the resin of pouring technology.No matter whether add filler, they are poured in mould 1 as casting material after mixing in mixing equipment 7.
The method of vacuum diaphragm cast of the present utility model is applicable to cast-in-site, is also applicable to the situations such as the cast of smallclothes product, the cast of prototype version product.Existing normal pressure casting can be used for cast-in-site, the cast of smallclothes product and the cast of prototype version product, but shortcoming is there is no vacuum environment, and product easily produces defect.
And existing vacuum pouring needs vacuum tank to realize vacuum environment, equipment volume is huge, and transportation is installed and is all restricted, and causes it almost cannot be applied to cast-in-site, but can be applicable to the cast of smallclothes product and the cast of prototype version product.
In the method for vacuum diaphragm cast of the present utility model, vacuum diaphragm portably uses conveniently, can be according to field condition, realize easily flexibly vacuum environment, overcome the shortcoming of first two pouring procedure, be the optimal selection of cast-in-site, be especially applicable to the intersegmental joint connection in site (so-called bus refers to the conventional bus in electrical power transmission system) of cast bus unit.Cast bus bar products,, is completed and is connected by standard block section cast-in-site according to actual requirement of engineering as elementary cell with each standard block section.Suitable, convenient and cheap vacuum pouring environment is provided when in the case, vacuum diaphragm pouring procedure can be for cast bus standard block section joint connection in site.The utility model is applied to this and has save bulky vacuum tank and make vacuum pouring become possibility, also can take more flexibly the easily mode of row to realize vacuum environment according to the different situations of linkage section mould simultaneously, has operability and application prospect.In addition, existing vacuum pouring equipment investment is high, and vacuum tank volume is huge, conventionally can pour into a mould several even tens products simultaneously, and to save material and the energy, flexibility is also poor, is not suitable for and produces smallclothes product and tentative product.When producing smallclothes product and prototype version product, adopt based on vacuum diaphragm cast of the present utility model, can greatly reduce costs, flexibility also increases greatly.
Claims (5)
1. a vacuum diaphragm running gate system, is characterized in that, comprising:
Mould;
Vacuum diaphragm, described vacuum diaphragm is coated on surrounding's formation vacuum space of described mould;
Vavuum pump, is connected in the vacuum orifice of described mould by vacuum pipe; With
Mixing equipment, is connected in the sprue gate of described mould by filling tube.
2. vacuum diaphragm running gate system according to claim 1, is characterized in that:
Junction between described vacuum diaphragm and described filling tube is sealed by sealing joint strip,
Junction between described vacuum diaphragm and described vacuum pipe is sealed by sealing joint strip.
3. vacuum diaphragm running gate system according to claim 1, is characterized in that:
On the vacuum pipe between described vavuum pump and described mould, be connected with liquid material collector,
Between described filling tube and described mixing equipment, be provided with material feeding valve.
4. vacuum diaphragm running gate system according to claim 3, is characterized in that:
Between described liquid material collector and described mould, be provided with vacuum meter,
On described mould, be provided with rising head.
5. vacuum diaphragm running gate system according to claim 1, is characterized in that:
Described vacuum diaphragm running gate system is that electrical power transmission system median generatrix carries out the vacuum diaphragm running gate system that vacuum pouring is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548037.9U CN203496198U (en) | 2013-09-04 | 2013-09-04 | Vacuum-film casting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548037.9U CN203496198U (en) | 2013-09-04 | 2013-09-04 | Vacuum-film casting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203496198U true CN203496198U (en) | 2014-03-26 |
Family
ID=50327202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548037.9U Expired - Fee Related CN203496198U (en) | 2013-09-04 | 2013-09-04 | Vacuum-film casting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203496198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109892255A (en) * | 2019-04-11 | 2019-06-18 | 叶祎 | Artificial honeycomb and preparation method thereof |
-
2013
- 2013-09-04 CN CN201320548037.9U patent/CN203496198U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109892255A (en) * | 2019-04-11 | 2019-06-18 | 叶祎 | Artificial honeycomb and preparation method thereof |
| CN109892255B (en) * | 2019-04-11 | 2021-12-28 | 叶祎 | Artificial honeycomb and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103465422A (en) | Vacuum film casting system and vacuum film casting method | |
| CN103264513A (en) | Integrated co-curing forming technology method for composite material multi-beam box section | |
| CN105965738A (en) | Pouring method for pouring molding of special-shaped coil former | |
| CN207339590U (en) | A kind of embedding frock of servo motor stator component | |
| CN201796808U (en) | External insulation sealing device of vacuum arc-extinguishing chamber | |
| CN107316743B (en) | A kind of pouring technology of dry-type power electronic capacitor | |
| CN203496198U (en) | Vacuum-film casting system | |
| CN205326306U (en) | A equipment for preparing fibre resin stick | |
| CN101935186B (en) | Special compound insulator composite for petroleum logging instrument and preparation method thereof | |
| CN113593794A (en) | Automatic pressure gel pure dry type capacitance type high-voltage insulation sleeve and manufacturing method thereof | |
| CN108063329B (en) | Severe environment resistant large current line bank and its filling and sealing method | |
| CN204526187U (en) | A kind of hermetically-sealed construction of wind electricity blade pre-embedded bolt cover termination | |
| CN101775229B (en) | High-temperature pressure-bearing composite insulator composition of corrosion-resistant gas and preparation method thereof | |
| CN104766918B (en) | A kind of utilize liquid-state epoxy resin carry out SMD LED mould note encapsulation technique and device | |
| CN102529040A (en) | Vacuum sealing mold of wind turbine nacelle cover | |
| CN108254536A (en) | Bellows encapsulation plug, concrete self-shrinkage test device and method using it | |
| CN202704235U (en) | Automobile tire glue-water bottle | |
| CN101764068A (en) | Method for packaging semiconductor apparatus assembly | |
| CN206657680U (en) | A kind of double jacket insulation | |
| CN103333307B (en) | Packaging material of traveling wave tube and packaging method of traveling wave tube | |
| CN204007911U (en) | Based on the multipoint thermocouple of single thermometric core body | |
| CN2924737Y (en) | Hot-melt-glue coating device | |
| CN207116126U (en) | A kind of Integral hollow extra-high voltage rod-shaped pillar composite insulator | |
| CN105643952A (en) | Core die for forming closed section structure of composite material | |
| CN208052435U (en) | Injecting glue negative pressure surge tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING ELECTRIC POWER EQUIPMENT GENERAL FACTORY C Free format text: FORMER NAME: BEIJING POWER EQUIPMENT GENERAL PLANT |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: BEIJING POWER EQUIPMENT GROUP Co.,Ltd. Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Power Equipment Group Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20210904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |