CN85104769A - The production method of parts of mould for foundry - Google Patents
The production method of parts of mould for foundry Download PDFInfo
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- CN85104769A CN85104769A CN85104769.6A CN85104769A CN85104769A CN 85104769 A CN85104769 A CN 85104769A CN 85104769 A CN85104769 A CN 85104769A CN 85104769 A CN85104769 A CN 85104769A
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- pressure
- molding sand
- mould
- chamber
- sand material
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Abstract
Make with automatic parts of mould for foundry process units in the method for parts of mould for foundry, automatics comprises the moldings formed therefrom chamber that is equipped with the moulded board that can move relative to each other, and by the forming panel of moulded board locking, the shaping mould chamber is through one or more little hole paths, communicate with belt-press type sand material, also can communicate with vacuum source and compressed air source respectively.The feature of this method is: a. pressure is injected into the funnel type import department in the feed bin, with filling and the fluid boiling that causes molding sand.B. the pressure on the feed bin is in order to inject molding sand material by import.C. control fluid boiling pressure and injection pressure separately.Can obtain even packed density like this, fast the parts of mould for foundry of producing.
Description
The present invention has narrated and has used the automatic mold method of other part of part process units manufacturing mold in addition, and this automatic manufacturing device includes the moldings formed therefrom chamber, and forming room forms by one group of pressing plate that can move relative to each other and by the forming panel of pressing plate locking.In addition, the mold molding sand material can be accepted by a funnel type import under the feed bin of import top in the shaping mould chamber, and molding sand material then is to be injected into the moldings formed therefrom chamber under the pressure.
When using other part production method of known mold, run into the problem on a kind of the production always, promptly to carry out the compression of height, otherwise not guarantee the stability of whole mold, also require to have fully high speed of production in addition the used molding sand material of the whole die body of mold.Particularly for the complicated mold that has similar structures such as fin part in addition, if molding sand material is imported by high pressure, the part of some in die cavity has the air-flow of stirring to produce so when producing.This stirring air-flow causes uneven molding sand to fill when moldings formed therefrom, and forms uneven mold density subsequently.
When importing molding sand material with lower pressure, the whole production time increases too much, and closely knit packed density also can not realize in the mold die body.
The objective of the invention is to show a kind of mold part production method in addition, this method is with short production cycle, and mold part in addition has stable solid packed density.
Target of the present invention is embodied by following production method, and it specifically is characterized as:
A) pressure is injected into the funnel type charging aperture place in the feed bin, and this locates above-mentioned injection pressure can cause the filling of molding sand material and the fluid boiling state of molding sand material,
B) set up certain pressure in feed bin, this pressure causes molding sand material to inject by charging aperture,
C) the fluid boiling pressure of molding sand material and the injection pressure of molding sand material are controlled respectively.
Production method with above-mentioned feature can shorten the whole production cycle, because pressure distributes automatically in import department, thus, from beginning just to have the operation of higher stuffing pressure, so can take place at the funnel inlet place to inject and interrupt.The fluidization of hopper zone can guarantee that last filling part has uniform laminar condition, and have lower relative friction between molding sand material this moment.The control respectively of boiling pressure and stuffing pressure provides the possibility of regulating degree of pressure, and this can guarantee, when given certain mold shape, chooses best briquetting pressure by adjusting test.
In hitherto known various process units, injection pressure and boiling pressure are to carry out Instantaneous Control by the pressure to above the feed bin and funnel inlet place respectively always.And do not remove to seek the continuous regulative mode of locating the relevant pressure value in the relevant range, therefore more there is not possibility to go to carry out the developmental research of relevant pressure in other the part production process of mold.
According to the possible embodiment of the method for the invention, can be by on the certain position of template, vacuum source being communicated in the mold chamber " shadow region ".
Like this, this method can reduce the production time, and also there is molding sand filling preferably " shadow region " that in general relatively is difficult to handle simultaneously in die cavity, and molding sand filling is preferably also promptly also arranged in the zone of the isostructural back of fin.
West Germany's prospectus was announced a kind of method in N.1941736.According to this method, the mold chamber is in vacuum when molding sand injects, but the vacuum that is provided is just in order to increase die cavity and feed bin superjacent air space effective pressure between the two is poor.Its vacuum is to have opened a comparatively wide notch at the bottom of the mold chamber, and vacuum source is linked to each other with die cavity.There is not the relevant narration that connects vacuum source by mold chamber surface aperture in the above-mentioned West Germany prospectus.
According to the present invention, when mold divided film, gas circuit conversion made compressed air replace vacuum source, and at this moment compressed air can feed and import in the little hole path or nozzle that vacuum uses, effectively clear up, equally also can clear up the vacuum or the pressure pipeline that connect the mold chamber.When compressed air is used in the gas circuit conversion, import vacuum and injecting compressed air source and still use above-mentioned little hole path and pressure pipeline.And then pressure injects for minute mould especially for " shadow region " advantageous particularly of key.
Below, coming with reference to the accompanying drawings that the present invention is further illustrated, a unique figure only schematically expresses process units used when implementing method of the present invention.
In the present invention's device shown in the drawings, container 1 is the feed bin that is used to store molding sand material 2, and molding sand material is normally used sand, but also can use other suitable moldings formed therefrom material.Air duct 3 is arranged on the two side walls of feed bin 1, and compressed air is injected in the space above the molding sand material 2.Funnel type charging aperture 4 places of feed bin 1 in the embodiment shown in the figures, molding sand material is the fluid boiling state.This moment, compressed air was under high pressure confessed by conduit 5, because the jet-action of conduit 5,4 places form fluidized state at once at charging aperture, and formed air bag, and air bag is shown in arrow in the accompanying drawing and dotted line.
In this illustrated embodiment, forced air is stored in the accumulator 6.This air tank compressed air is infeeded through valve 7 by air compressor.
Be moldings formed therefrom chamber 8 below the feed bin 1, this forming room is spacing by two templates 9,10 at transverse direction.Above-mentioned two templates are close to by pressing plate 11,12 supports of both sides respectively again.The pressing plate of both sides then is connected with and only shows a piston in the piston apparatus 13(accompanying drawing), under the high pressure effect, two side guides can close to each otherly move with separating.Design has aperture paths 14 in template, and like this, air then can be connected with vacuum source 16 or compressed gas source 17 respectively with triple valve 15 by supply air line.
Position shown in the accompanying drawing is just to have begun injection molding, and molding sand 2 under high pressure is injected in the moldings formed therefrom chamber 8, as shown by arrows through pressure injection by the funnel bottom porous plate through funnel type charging aperture 4.In moldings formed therefrom chamber 8 injection of molding sand and in mould chamber 8 compression all be to provide under the condition of vacuum by vavuum pump 16 to carry out.In the final stage that molding sand injects, set up a kind of controllable pressure to molding sand, the injection of lower pressure is to make the funnel type charging aperture present the liquefaction fluidized state.Meanwhile, the injection of molding sand will last till that always template 9,10 moves forward toward each other under piston action, do not show the action of piston cylinder in the attached example, and it is to be moved forward each other by piston rod 13 driving moulded boards 11,12 to promote swooping template action.
Moving at molding sand of moulded board finishes behind the enough suitable quantities of the indoor injection of mould immediately, and at this moment the mold for molding process finishes.
The mobile of template 10 is by carrying out in the certain procedure mode from mold driven plunger (not shown) and moulded board 12, simultaneously, provide compressed air by compressed air source 17 through small holes path 14, on the defining surface of template, acting on normal pressure like this.Mold 8 is to push forward together with the original mold of producing by piston among the figure 13 and moulded board 11 by mobile in the mould chamber, and specifically moving method is decided mode and carried out by giving as previously mentioned.Last template 9 can be left from last moulding mold by piston 13 and moulded board 11 follow procedure modes, meanwhile, passes through aperture 14 injection pressure air from compressed air source 17.Piston 13 and moulded board 11 turn back on their home positions in the moldings formed therefrom chamber then.Subsequently, moulded board 12 turns back to its original position by piston, does not give demonstration among the figure, so far, can begin to carry out new injection molding operation again.
Claims (3)
1, by using automatic casting mold making system to produce the mold method of part in addition, include moldings formed therefrom chamber (8) in this automatics, this mould chamber is furnished with the moulded board (11) that can move relative to each other, with template (9) by moulded board (11) locking, in addition, can be injected into lining, mould chamber (8) to molding sand material feed bin above the charging aperture through funnel type charging aperture (4) by pressure in that mold is indoor, it is characterized in that
A. the funnel type charging aperture (4) that is injected in the feed bin (2) of pressure is located, and at this, above-mentioned injection pressure can cause the filling of molding sand material and the fluid boiling of molding sand material,
B. set up certain pressure in feed bin, this pressure causes molding sand material to inject by charging aperture,
C. fluid boiling pressure and injection pressure are controlled separately.
According to claim 1 described method, it is characterized in that 2, moldings formed therefrom chamber (8) are connected with vacuum source in some position of its " shadow region ".
According to claim 2 described methods, it is characterized in that 3, the switching to pressure source is to replace vacuum source when mold divides mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104769 CN1007792B (en) | 1985-06-20 | 1985-06-20 | Method of producing parts of mould for foundry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104769 CN1007792B (en) | 1985-06-20 | 1985-06-20 | Method of producing parts of mould for foundry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104769A true CN85104769A (en) | 1986-12-24 |
| CN1007792B CN1007792B (en) | 1990-05-02 |
Family
ID=4794048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85104769 Expired CN1007792B (en) | 1985-06-20 | 1985-06-20 | Method of producing parts of mould for foundry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007792B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189229A (en) * | 2011-03-23 | 2011-09-21 | 苏州明志科技有限公司 | Method and device for manufacturing cold core by using pressure difference |
| CN102834200A (en) * | 2010-08-09 | 2012-12-19 | 新东工业株式会社 | Mold molding device and mold molding method |
| CN104368766A (en) * | 2014-10-24 | 2015-02-25 | 山东时风（集团）有限责任公司 | Top-bottom bidirectional uniform sand ejection casting and modeling device and method for manufacturing sand mold by device |
| CN107846984A (en) * | 2015-09-11 | 2018-03-27 | 菲利普莫里斯生产公司 | Method for manufacturing thermal source |
| CN109622898A (en) * | 2019-02-01 | 2019-04-16 | 石家庄铁道大学 | Horizontal sand casting machine |
| CN110039011A (en) * | 2019-06-05 | 2019-07-23 | 含山县富瑞机械厂 | A kind of packaged type Double-station core shooter |
| CN110090930A (en) * | 2019-06-05 | 2019-08-06 | 含山县富瑞机械厂 | A kind of core shooter sand hopper that flow velocity can be improved |
| CN110102720A (en) * | 2019-06-05 | 2019-08-09 | 含山县富瑞机械厂 | A kind of oblique booster-type core shooter of duplex bit-type |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100837464B1 (en) * | 2000-02-17 | 2008-06-12 | 신토고교 가부시키가이샤 | An apparatus for introducing and compacting molding sand, and a method for blowing and introducing molding sand |
-
1985
- 1985-06-20 CN CN 85104769 patent/CN1007792B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834200A (en) * | 2010-08-09 | 2012-12-19 | 新东工业株式会社 | Mold molding device and mold molding method |
| CN102834200B (en) * | 2010-08-09 | 2014-12-03 | 新东工业株式会社 | Mold molding device and mold molding method |
| CN102189229A (en) * | 2011-03-23 | 2011-09-21 | 苏州明志科技有限公司 | Method and device for manufacturing cold core by using pressure difference |
| CN102189229B (en) * | 2011-03-23 | 2012-10-31 | 苏州明志科技有限公司 | Method and device for manufacturing cold core by using pressure difference |
| CN104368766A (en) * | 2014-10-24 | 2015-02-25 | 山东时风（集团）有限责任公司 | Top-bottom bidirectional uniform sand ejection casting and modeling device and method for manufacturing sand mold by device |
| CN107846984A (en) * | 2015-09-11 | 2018-03-27 | 菲利普莫里斯生产公司 | Method for manufacturing thermal source |
| CN109622898A (en) * | 2019-02-01 | 2019-04-16 | 石家庄铁道大学 | Horizontal sand casting machine |
| CN110039011A (en) * | 2019-06-05 | 2019-07-23 | 含山县富瑞机械厂 | A kind of packaged type Double-station core shooter |
| CN110090930A (en) * | 2019-06-05 | 2019-08-06 | 含山县富瑞机械厂 | A kind of core shooter sand hopper that flow velocity can be improved |
| CN110102720A (en) * | 2019-06-05 | 2019-08-09 | 含山县富瑞机械厂 | A kind of oblique booster-type core shooter of duplex bit-type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1007792B (en) | 1990-05-02 |
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