CN1119140A - Method and device for potting parts in a vaccum and device for evacuating chambers, vessels or the like - Google Patents
Method and device for potting parts in a vaccum and device for evacuating chambers, vessels or the like Download PDFInfo
- Publication number
- CN1119140A CN1119140A CN95109528.5A CN95109528A CN1119140A CN 1119140 A CN1119140 A CN 1119140A CN 95109528 A CN95109528 A CN 95109528A CN 1119140 A CN1119140 A CN 1119140A
- Authority
- CN
- China
- Prior art keywords
- closed chamber
- gas container
- vacuum
- volume
- chamber
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004382 potting Methods 0.000 title 1
- 238000005266 casting Methods 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 238000005538 encapsulation Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/42—Casting under special conditions, e.g. vacuum
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Vacuum Packaging (AREA)
Abstract
The invention provides a method used for encapsulating parts by solidified mediums in the vacuum and the devices thereof, in particular to encapsulate an ignition coil by casting resin. The part is proposed to be inserted into a sealing chamber 10; the vacuum is generated by communicating the sealing chamber with a gas storage device 18 which is evacuated; the encapsulation operation is carried out and then the sealing chamber is ventilated. A corresponding device is provided with the sealing chamber 10 and the gas storage device 18 which can be evacuated to vacuum and connected with the sealing chamber. The device can be also used for evacuating chambers, tanks, etc. The space to be evacuated is connected with the gas storage device 18; the gas storage device is provided with a vacuum which is generated in advance and the volume of the gas storage device is much larger than that of the space to be evacuated.
Description
The present invention relates to a kind of the most handy curing medium package parts that are used in vacuo, especially for the method that ignition coil is lived with casting resin encapsulation and device thereof and a kind of device of being found time in chamber, jar etc. of being used for.
When the parts described in the explanation of the example that uses ignition coil below being encapsulated in, require usually medium to be packaged, in this example, be casting resin, as much as possible bubble-freely be combined into one with coil case.The gas bag stays phenomenon especially at ignition coil or other electronic units, for example transformer or diode circuit, situation under can adverse influence be arranged to high voltage intensity.
Carrying out this class packaging operation in a vacuum has been well-known.For this purpose, a corresponding device thereof has three chambers, will find time near the ignition coil therein in one first Room, one second casting chamber, this chamber is separated by a lock uint and first Room, and finds time, and casting process just carries out within it, with one the 3rd breather chamber, this chamber is separated by a lock uint and second Room equally, and within it, ignition coil is adapted to ambient pressure once more.In venting process, casting resin is subjected to unexpected leaked-in air extrusion and is stressed to enter in the coil case.In such cases, it is to be compressed with the ratio of vacuum pressure with the ratio of ambient pressure that bag stays gas.
Described equipment has very complicated structure, and it has three vacuum chambers, a transfer system and a plurality of lock uint between these three chambers.
Advantage with method of the present invention of independent claims feature is: only need a chamber and a gas container, its work period is then the same with three Room equipment.Closed chamber just can save two lock uints in this way, because can or be closed by a simple opening of valves with being communicated with of rarefied gas container.The gas container of having found time in advance can be guaranteed finding time fast of closed chamber.Because ignition coil processing time or the residence time in a vacuum shortened, just reduced to be still the outgas tendency of liquid casting resin.Therefore, just can obtain high-quality encapsulation and reduce to wrap the size of staying gas and reduce the chance of its appearance.In addition, the lower gas release tendency of mix ingredients allows to operate under the higher temperature carries out, thereby allows casting resin to pour into a mould under lower viscosity.Though the increase of casting resin temperature can increase the gas release tendency, it also can reduce viscosity, and therefore feasible even narrower gap also can be filled with reliably.
The feature of enumerating in the dependent claims allows the method for independent claims is done more favourable improvement.When closed chamber when for example the vacuum pump of a special use is further found time, encapsulation can further be improved.
Gas container can be found time continuously in a kind of more favourable mode, forms vacuum in the closed chamber so that can promptly be engraved in.
If owing to one independently vacuum pump be connected to and make the operation vacuum compare with the vacuum of gas container and have higher quality on the closed chamber, then preferably can when making the closed chamber ventilation, at first open the connection between gas container and the closed chamber, so that can utilize the energy of importing in the vacuum in the mode of the best.
The device of realizing the inventive method preferably has a closed chamber and a gas container, and this gas container can be evacuated and be connected to described closed chamber.Closed chamber can be connected in this case on the conveying of entire equipment or the handling system and need not complicated vacuum lock technology.Except vacuum degree, what requirement gas container is not had, and particularly this space does not need to be connected on a conveying or the handling system.Method is preferably, and the volume of gas container is greater than the volume of closed chamber, and is specifically big 50 times.This just guarantees even connects the vacuum that also can obtain enough quality after the pressure balance when being opened.
According to the present invention, this device also can be used not evacuated chamber, jar etc., thereby can produce predetermined vacuum in predetermined space fast.
Two example embodiment of apparatus of the present invention illustrate in the accompanying drawings and declaratives below in made detailed description.Fig. 1 and Fig. 2 are respectively the schematic diagrames according to apparatus of the present invention of first and second example embodiment.
Fig. 1 shows a closed chamber 10, and sealing chamber 10 has a schematically illustrated closable opening 12 and a cast part 14.Closed chamber 10 is connected on the gas container 18 through one first pipeline 16.First pipeline 16 is by valve 20 controls of an electrically actuated.A vacuum pump 22 is connected on the gas container 18.
In addition, closed chamber 10 is connected on another vacuum pump 26 through one second pipeline 24.Second pipeline 24 is controlled by the valve 28 of an electrically actuated equally.
Has same label according to parts identical in the example embodiment of Fig. 2 with parts in first example embodiment.Be outside this embodiment and first example embodiment different: only be provided with a vacuum pump 30, but it is connected to the triple valve 34 of an electrical control through a pipeline 32.34 on this triple valve further is connected to closed chamber 10 and is connected on the gas container 18 through a pipeline 38 through a pipeline 36.Triple valve 34 can be used to randomly gas container 18 is connected to vacuum pump 30 or closed chamber 12 is connected to vacuum pump 30, and perhaps, if necessary, both are connected on the vacuum pump 30 with gas container 18 and closed chamber 12.
The course of work of apparatus of the present invention is as follows:
Unshowned bobbin frame passes opening 12 by a same unshowned conveying system and inserts in the closed chamber 10.After opening 12 vacuum seals were lived, closed chamber 10 and the gas container 18 of having been found time by vacuum pump 22 coupled together by making valve 20 opening ways.So just cause pressure balance fast.The blend pressure that is occurred is respectively by in the closed chamber 10 and the initial pressure in the gas container 18, and determined by their volume.Approximately be under 50 times the situation of volume of closed chamber 10 at the gas container volume, the total pressure that is occurred roughly is 1/50th of the pressure of the gas container pressure that adds closed chamber.This obtainable pressure has been enough big concerning many application.
In order to obtain further reducing of pressure, valve 20 cuts out and valve 28 is opened, thereby vacuum pump 26 is connected to closed chamber 10.As a result, further pressure reduces and will take place.
Encapsulation operation can now carried out in the closed chamber 10 of axle sky.Be right after after encapsulation, closed chamber 10 is ventilation once more just.For this purpose, at first valve 28 or 34 cuts out respectively, open valve 20 then.The result is, can be used for the gas container 18 of finding time by vacuum pump 26 or 30 stress levels that reduce respectively.After pressure balance is finished, just valve 20 cuts out and opens an air-breather 40.
Suddenly leaked-in air can apply a pressure on casting resin, thereby casting resin is pressed in the crack and gap in the ignition coil.Presumable bag stays gas to be compressed with the ratio of vacuum pressure with the ratio of ambient pressure.
In a preferred embodiment, vacuum pump 22 or 30 gas container 18 of finding time continuously respectively.According to the size and the rated power of these pumps 22,30, also a plurality of closed chambers 10 might be connected on the air storage chamber 18.
Use above-mentioned device, not only can the encapsulation point fire coil, and can encapsulate employing and under vacuum state, encapsulate so that produce any other parts of still as far as possible packaging body.When closed chamber is replaced by another container, can also obtain the fast axis sky of any chamber, jar etc.
Under the situation of the corresponding design form of triple valve 34, can also save connecting pipe 16 and electromagnetically operated valve 20.
Claims (8)
1. use preferably curing medium package parts in a vacuum for one kind, particularly use the method for casting resin encapsulation point fire coil, this method comprises the following steps:
A) parts are inserted in the closed chamber (10);
B) produce a vacuum by the mode that closed chamber (10) is communicated to a gas container of having found time (18);
C) close connectedness (16,38);
D) medium of packing into;
E) make sealing chamber (10) ventilation.
2. the method for claim 1 is characterized in that: the closed chamber (10) of further finding time after connectedness (16,38) is closed.
3. method as claimed in claim 1 or 2 is characterized in that: gas container (18) is found time continuously.
4. as claim 2 or 3 described methods, it is characterized in that: in order to make closed chamber (10) ventilation, at first gas container (18) is communicated to closed chamber (10), is allowing ambient pressure close connectedness (16) once more before entering then.
5. be used for realizing the device of aforementioned each described method of claim, it is characterized in that: this device is to realize said method with a closed chamber (10) and the gas container (18) that can be evacuated and be communicated on the described closed chamber (10).
6. device as claimed in claim 5 is characterized in that: closed chamber (10) and gas container (18) can be connected on the vacuum pump separately.
7. as claim 5 or 6 described devices, it is characterized in that: the volume of gas container (18) is widely greater than the volume of closed chamber (10), specifically greater than 50 times of closed chamber volume.
8. the device that is used for evacuated chamber, jar etc., it is characterized in that: the rarefied space of desire (10) can be connected on the gas container (18), this gas container (18) has the vacuum that produces in advance, and its volume is widely greater than the volume in the rarefied space of desire (10), specifically greater than 50 times of the volume of this space (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4430762.4 | 1994-08-30 | ||
| DE4430762A DE4430762A1 (en) | 1994-08-30 | 1994-08-30 | Vacuum impregnation with synthetic resin, partic. ignition coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1119140A true CN1119140A (en) | 1996-03-27 |
Family
ID=6526921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95109528.5A Pending CN1119140A (en) | 1994-08-30 | 1995-08-30 | Method and device for potting parts in a vaccum and device for evacuating chambers, vessels or the like |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1119140A (en) |
| DE (1) | DE4430762A1 (en) |
| FR (1) | FR2723879B1 (en) |
| IT (1) | IT1277485B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927510A (en) * | 2016-06-30 | 2016-09-07 | 苏州新智机电工业有限公司 | Online efficient vacuum operation system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006011757A1 (en) † | 2006-02-24 | 2007-09-06 | Hilmar Kraus | Method for casting electrical and / or electronic components in a housing |
| DE102006017116B4 (en) | 2006-04-10 | 2013-11-28 | Infineon Technologies Ag | Device and method for producing an article by means of molding technique, in particular by means of a transfer molding process |
| DE102008043211A1 (en) | 2008-10-28 | 2010-04-29 | Zf Friedrichshafen Ag | Torsionsschwingungsdämpferanordnung, in particular for the drive train of a vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169112B (en) * | 1964-04-30 | Friedrich Schmidt Dipl Ing | Process for the production of molded articles from addition products of polyester isocyanate | |
| DE1281673B (en) * | 1966-03-24 | 1968-10-31 | Calor Emag Elektrizitaets Ag | Plastic casting plant |
| US3853976A (en) * | 1970-06-23 | 1974-12-10 | Brick K Co Inc | Method for casting slabfaced panels |
| DE3307396A1 (en) * | 1983-03-02 | 1984-09-06 | Volta-Werke Elektricitäts-Gesellschaft mbH, 1000 Berlin | METHOD FOR CASTING METAL BODIES, IN PARTICULAR WINDINGS OF TRANSFORMERS |
| DE4210241A1 (en) * | 1992-03-28 | 1993-09-30 | Huebers Verfahrenstech | Process for casting components with an impregnating compound |
-
1994
- 1994-08-30 DE DE4430762A patent/DE4430762A1/en not_active Withdrawn
-
1995
- 1995-07-31 FR FR9509301A patent/FR2723879B1/en not_active Expired - Fee Related
- 1995-08-22 IT IT95MI001792A patent/IT1277485B1/en active IP Right Grant
- 1995-08-30 CN CN95109528.5A patent/CN1119140A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927510A (en) * | 2016-06-30 | 2016-09-07 | 苏州新智机电工业有限公司 | Online efficient vacuum operation system |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI951792A1 (en) | 1997-02-22 |
| ITMI951792A0 (en) | 1995-08-22 |
| IT1277485B1 (en) | 1997-11-10 |
| DE4430762A1 (en) | 1996-03-07 |
| FR2723879A1 (en) | 1996-03-01 |
| FR2723879B1 (en) | 1997-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |