CN1326832A - Vacuum casting device - Google Patents
Vacuum casting device Download PDFInfo
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- CN1326832A CN1326832A CN 00109044 CN00109044A CN1326832A CN 1326832 A CN1326832 A CN 1326832A CN 00109044 CN00109044 CN 00109044 CN 00109044 A CN00109044 A CN 00109044A CN 1326832 A CN1326832 A CN 1326832A
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- mould
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- flexible
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- fixed mould
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Abstract
The vacuum casting device includes one fixed mold and one movable mold, and between the fixed mold and the movable mold there are one female mold and one male mold to form one hollow mold cavity in between. After the fixed mold and the movable mold are closed, the mold cavity is vacuum pumped, so that the melt can be sucked into the mold cavity to form fast. The present invention has decreased power consumption, reduced production cost and no air bubble in cast product.
Description
The present invention relates to a kind of casting device, relate in particular to and a kind ofly can will extract into the vacuum shape in the mould, make the vacuum casting device of motlten metal or plastic cement material casting.
At present, the die casting mode of existing conventional metals product, general similar to plastic cement finished product molding mode, please consult Figure 1 and Figure 2 respectively, it mainly utilizes a fixed mould 10 ' and a flexible mould 20 ' to carry out the moulding manufacturing, then be formed with a cavity groove 30 ' between this fixed mould 10 ' and flexible mould 20 ', after flexible mould 20 ' is by a motion bar 24 ' drive and fixed mould 10 ' closing, motlten metal material 52 ' in one feeding machine 5 ' is then gone up set passage 50 ' via fixed mould 10 ', the motlten metal material 52 ' extruding of an amount of high temperature is injected in this chamber groove 30 ', after the typing to be cooled, this flexible mould 20 ' is then by the drive of this motion bar 24 ', and separate with this fixed mould 10 ', to form finished product 7 '.
But traditional pressure casting method or plastic rubber shaping mode have following shortcoming:
1. when material feeding, owing to must melt metal or plastic cement material 52 ' be injected in the chamber groove 30 ' in the mode of high pressure, and need expend the great energy and cost.
2. this fixed mould 10 ' and flexible mould 20 ' are when carrying out closing, also must impose very big thrust in this flexible mould 20 ', produce with the situation that reduces to produce the slit between fixed mould 10 ' and flexible mould 20 ' abutted surface A ', reduce flash 72 ' as far as possible.
3. this melt metal or plastic cement material 52 ' then are to inject in this chamber groove 30 ' in the high pressure mode, and in the flow process of motlten metal or plastic cement material 52 ', because the difference of flow rate, very easily go up and produce bag wind phenomenon at finished product 7 ', and in chamber groove 30 ', then have an air, so when carrying out material feeding, very easily form bubble in this motlten metal or the plastic cement material 52 ', and the probability that makes finished product 7 ' behind the die cast produce flaw improves.
4. owing to there is air during the inherent material feeding of this chamber groove 30 ', so make in the process of material feeding, often make melt metal material 52 ' when moulding, very easily on finished surface, produce the phenomenon of oxidation, and then cause the metal finished product of being produced 7 ' to have the flaw phenomenon to take place, even can influence the intensity of finished product 7 '.
Main purpose of the present invention is to provide a kind of vacuum casting device that overcomes the prior art deficiency, and this device can be in mould finishes quick injection mo(u)lding under the vacuum state, avoids forming in the metalliferous material bubble and produces flaws such as wrapping the wind phenomenon, boosts productivity.
For this reason, the invention provides a kind of vacuum casting device, mainly comprise a fixed mould and flexible mould, described flexible mould rear end then is connected with a motion bar, and motion bar drives this flexible mould and moves with respect to this fixed mould and be separated from each other closing with this fixed mould; One cavity groove is located between two moulds, and described cavity groove shape is the finished form of desire moulding, and this cavity groove periphery appropriate location is provided with the flash district; Fixed mould is provided with one and wears that described fixed mould is connected with the flash district of this chamber groove and for the passage of material flow in wherein injecting this chamber groove of fusion, described passage is connected with a feeding machine outside fixed mould; Be embedded with a former on the described fixed mould, be embedded with a formpiston on the described flexible mould, and behind formpiston, be provided with an accommodation space, then be arranged with a plurality of fixed slip bars between this fixed mould and flexible mould in parallel, this flexible mould is along vertically moving on this fixed slip bar, wherein this fixed slip bar one end is fixedly arranged on this fixed mould, and the other end then extends in the accommodation space of this flexible mould, and is installed with a panel at this fixed slip bar end; Described passage further wears former; Described cavity groove is located between formpiston and the former; Other is provided with an ejecting mechanism that casting roof fall and formpiston can be separated; Also be provided with the air flue that at least one is arranged in this fixed mould and former and is connected with the flash district of this chamber groove, described air flue is connected with a vavuum pump in the fixed mould outside.
Among the present invention, be provided with in the described ejecting mechanism one be parallel to fixed slip bar and be provided with eject shank, the described shank that ejects is arranged in this formpiston, and be fixed in the fixedly slotted eye of this flexible mould, eject at this in addition and be provided with a cylinder on the shank, and be engaged in this formpiston rear end and be provided with a holddown groove, be provided with a compression spring in it, make this cylinder rear end can be subjected to the support of this compression spring and reveal and set out suitable length outside this holddown groove.
Among the present invention, described fixed mould and flexible mould phase-contact surface respectively are equipped with a conduit, and a flexible gas-tight ring is set within it.
Among the present invention, described air flue is provided with a valve body.
Major advantage of the present invention and effect: this device can be in mould finishes quick injection mo(u)lding under the vacuum state, because inner vacuum, true and the tight closing of flexible mould of fixed die, quantitative motlten metal or plastic cement material can be pulled in the mould apace automatically, avoid in metalliferous material, forming bubble and produce bag wind phenomenon, and avoid the metal finished surface to have the situation of generation oxidation to take place, boost productivity, save the energy.
Fig. 1 is the cross-sectional view of existing metal casting device.
Fig. 2 is the mould die sinking schematic diagram of existing metal casting.
Fig. 3 is the cross-sectional view of metal casting device of the present invention.
Fig. 4 is the vacuum state schematic diagram for the present invention with bleeding in the groove of chamber.
Fig. 5 carries out the schematic diagram of material feeding for the present invention.
Fig. 6 destroys the interior vacuum state schematic diagram of this chamber groove for the present invention.
Action schematic diagram when Fig. 7 carries out die sinking for the present invention.
Another action schematic diagram when Fig. 8 carries out die sinking for the present invention.
Now in conjunction with the accompanying drawings the present invention is described in detail as follows:
See also shown in Figure 3ly, be the structure chart of vacuum casting device of the present invention.It mainly has a fixed mould 10 and a flexible mould 20,20 of this fixed mould 10 of face and flexible moulds then respectively are embedded with a former 12 and a formpiston 22, these flexible mould 20 rear ends are connected with a motion bar 24, drive moving of this flexible mould 20 according to this, make this flexible mould 20 to move with respect to this fixed mould 10, and make this flexible mould 20 and these fixed mould 10 mutual closings, and be embedded at the former 12 and also closely closing mutually of formpiston 22 of 20 of this fixed mould 10 and flexible moulds, and two intermodes then constitute a cavity groove 30, for desiring the finished form of moulding, wherein this fixed mould 10 respectively is equipped with a conduit 16 with flexible mould 20 phase-contact surfaces, 26, and a rubber-like gas-tight ring is set within it; In the flexible mould 20 of these formpiston 22 rear sides, constitute an accommodation space 28 in addition, 20 of this fixed mould 10 and flexible moulds then are arranged with a plurality of fixed slip bars 50 in parallel, make this flexible mould 20 can on this fixed slip bar 50, carry out mobile longitudinally person, wherein these fixed slip bar 50 1 ends are fixedly arranged on this fixed mould 10, the face other end then extends in the accommodation space 28 of this flexible mould 20, and be installed with a panel 52 at these fixed slip bar 50 ends, 52 of this panels can moving with person's flexible mould 20, and in the accommodation space 28 of 20 of this formpiston 22 and flexible moulds, do a longitudinally-moving that limits distance, to limit the distance of this flexible mould 20 and 10 foldings of fixed mould; Other is provided with a passage 60 and is arranged in this fixed mould 10 respectively and is connected with the flash district 32 of this chamber groove 30 with former 12, and outside fixed mould 10, be connected with a feeding machine 6, material for fusion injects in this chamber groove 30 via this passage 60, wherein can to include with magnesium alloy or aluminium alloy be the metal melting material of primary raw material to this fused materials, or the plastic cement fused materials of being formed with plastic cement; Other is provided with at least one air flue 70, be arranged in this fixed mould 10 respectively and be connected with the flash district 32 of this chamber groove 30 with former 12, and this air flue 70 is connected with a vavuum pump 7 in fixed mould 10 outsides, and be provided with a valve body 72 thereon; Moreover, the present invention is provided with an ejecting mechanism 80 in addition, this ejecting mechanism 80 has one and ejects shank 82 and be parallel to this fixed slip bar 50 and be provided with, and eject shank 82 and be arranged in this formpiston 22, and be fixed in the fixedly slotted eye 23 of this flexible mould 20, eject at this in addition and be provided with a cylinder 84 on the shank 82, and be engaged in these formpiston 22 rear end and be provided with a holddown groove 224, be provided with a compression spring 86 in it, make these cylinder 84 rear ends showed by the support of this compression spring 86 and set out suitable length outside this holddown groove 224.
See also Fig. 4 to shown in Figure 8, casting of the present invention and vacuum forming mode, main earlier with of the promotion of this flexible mould 20 by this motion bar 24, and with this fixed mould 10 closing mutually; Moreover, after this valve body 72 opened, and start this vavuum pump 7 and bleed, force the air in this chamber groove 30 to be discharged via this air flue 70, make to level off in the chamber groove 30 and be vacuum state, so, 20 of this fixed mould 10 and flexible moulds, because of almost being in the chamber groove 30 under the situation of vacuum state, make the pressure in the chamber groove 30 approach zero, and the phase-contact surface A of 20 of this former 10 and formpistons can be subjected under the physical action of external atmospheric pressure, and reach closing state quite closely, to prevent to produce the possibility in gap, 20 gas-tight ring 40 between between this fixed mould 10 and flexible mould then can further make the purpose that reaches better sealing in the chamber groove 30 in addition, avoid the infiltration of external air, as shown in Figure 4.
See also shown in Figure 5, after treating this valve body 72 closed, promptly by an amount of fused materials 62 of these feeding machine 6 outputs, flow in this chamber groove 30 via this passage, owing to be vacuum state in this chamber groove 30, so can produce a negative pressure, can at a terrific speed this material 62 be sucked in this chamber groove 30 automatically, and release utilized the high pressure mode in the past, material 62 is forced the energy of clamp-oning institute's additive decrementation in the chamber groove 30, and because the pressure of every bit is all identical in this chamber groove 30, so can make this material 62 can inject every bit in this chamber groove 30 fifty-fifty, and can avoid producing the possibility of bubble and bag wind phenomenon, and can exempt the possibility of metalliferous material and air generation oxidation.
See also shown in Figure 6, after material feeding finishes, valve body 72 is opened, make this air flue 70 be in communication with the outside, to destroy the vacuum state in this chamber groove 30, with in this chamber groove of balance 30 and the pressure between the external world, the strength that it mainly uses when reducing die sinking, cancel the closing strength that 20 of this fixed mould 10 and flexible moulds are produced because of chamber groove 30 inside and outside differential pressures, lean on this flexible mould 20 with this motion bar 24 again and separate a distance with this fixed mould 10, these panel 52 surfaces are just touched in these cylinder 84 rear ends, as shown in Figure 7.
See also shown in Figure 8, when this motion bar 24 continues to pull back this flexible mould 20 and separates with this fixed mould 10, this panel 52 can promote this cylinder 84 in holddown groove 224 and move simultaneously, make this eject the direction that shank 82 moves in contrast to this formpiston 22 and move, to provide the finished product that to be attached on the formpiston 22 to give roof fall separately, to take out finished product 90; So, when motion bar 24 these flexible moulds 20 of pulling, can impose less strength, with flexible mould 20 separately with respect to this fixed mould 10, and the consume and the cost of minimizing energy and cost.
Certainly, the present invention not only can use aspect the metal casting moulding, still can be used in the plastic rubber ejaculate molding mode, not only can save process time, and can save processing cost.
But the above person, it only is a preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, all equivalent variations and modifications of doing according to the described shape of the present patent application claim, structure, feature and spirit all should be included in the claim of the present invention.
Claims (4)
1, a kind of vacuum casting device mainly comprises a fixed mould and flexible mould, and described flexible mould rear end then is connected with a motion bar, and motion bar drives this flexible mould and moves with respect to this fixed mould and be separated from each other closing with this fixed mould; One cavity groove is located between two moulds, and described cavity groove shape is the finished form of desire moulding, and this cavity groove periphery appropriate location is provided with the flash district; Fixed mould is provided with one and wears that described fixed mould is connected with the flash district of this chamber groove and for the passage of material flow in wherein injecting this chamber groove of fusion, described passage is connected with a feeding machine outside fixed mould, it is characterized in that: be embedded with a former on the described fixed mould, be embedded with a formpiston on the described flexible mould, and behind formpiston, be provided with an accommodation space, then be arranged with a plurality of fixed slip bars between this fixed mould and flexible mould in parallel, this flexible mould is along vertically moving on this fixed slip bar, wherein this fixed slip bar one end is fixedly arranged on this fixed mould, the other end then extends in the accommodation space of this flexible mould, and is installed with a panel at this fixed slip bar end; Described passage further wears former; Described cavity groove is located between formpiston and the former; Other is provided with an ejecting mechanism that casting roof fall and formpiston can be separated; Also be provided with the air flue that at least one is arranged in this fixed mould and former and is connected with the flash district of this chamber groove, described air flue is connected with a vavuum pump in the fixed mould outside.
2, vacuum casting device as claimed in claim 1, it is characterized in that: be provided with in the described ejecting mechanism one be parallel to fixed slip bar and be provided with eject shank, the described shank that ejects is arranged in this formpiston, and be fixed in the fixedly slotted eye of this flexible mould, eject at this in addition and be provided with a cylinder on the shank, and be engaged in this formpiston rear end and be provided with a holddown groove, be provided with a compression spring in it, make this cylinder rear end can be subjected to the support of this compression spring and reveal and set out suitable length outside this holddown groove.
3, vacuum casting device as claimed in claim 1 or 2 is characterized in that: described fixed mould and flexible mould phase-contact surface respectively are equipped with a conduit, and a flexible gas-tight ring is set within it.
4, vacuum casting device as claimed in claim 1 or 2 is characterized in that: described air flue is provided with a valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109044 CN1326832A (en) | 2000-06-07 | 2000-06-07 | Vacuum casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109044 CN1326832A (en) | 2000-06-07 | 2000-06-07 | Vacuum casting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1326832A true CN1326832A (en) | 2001-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00109044 Pending CN1326832A (en) | 2000-06-07 | 2000-06-07 | Vacuum casting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1326832A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418668C (en) * | 2006-08-30 | 2008-09-17 | 谢克非 | Air pressure type rapid mould shaper |
| CN102294460A (en) * | 2011-08-12 | 2011-12-28 | 增城市运豪五金塑料有限公司 | Vacuum casting method for obstructing molten liquid from entering vacuum pipeline by adopting resin-sand microporous sieve |
| CN101722295B (en) * | 2008-11-01 | 2012-01-18 | 吴为国 | Method of vacuum pressure casting machine and device thereof |
| CN102529046A (en) * | 2011-12-26 | 2012-07-04 | 杭州兴源过滤科技股份有限公司 | Polymer plastic diaphragm pressurizing vacuum injection molding system and forming method |
| CN108407212A (en) * | 2018-05-15 | 2018-08-17 | 德清新亚塑业有限公司 | A kind of New Type of Injection Machine |
| CN109926556A (en) * | 2017-12-15 | 2019-06-25 | 现代自动车株式会社 | Vacuum centrifugal casting device |
| CN111299545A (en) * | 2020-04-10 | 2020-06-19 | 台州巨东精密铸造有限公司 | Negative-pressure resin sand casting mold and casting process thereof |
-
2000
- 2000-06-07 CN CN 00109044 patent/CN1326832A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418668C (en) * | 2006-08-30 | 2008-09-17 | 谢克非 | Air pressure type rapid mould shaper |
| CN101722295B (en) * | 2008-11-01 | 2012-01-18 | 吴为国 | Method of vacuum pressure casting machine and device thereof |
| CN102294460A (en) * | 2011-08-12 | 2011-12-28 | 增城市运豪五金塑料有限公司 | Vacuum casting method for obstructing molten liquid from entering vacuum pipeline by adopting resin-sand microporous sieve |
| CN102294460B (en) * | 2011-08-12 | 2013-08-14 | 增城市运豪五金塑料有限公司 | Vacuum casting method for obstructing molten liquid from entering vacuum pipeline by adopting resin-sand microporous sieve |
| CN102529046A (en) * | 2011-12-26 | 2012-07-04 | 杭州兴源过滤科技股份有限公司 | Polymer plastic diaphragm pressurizing vacuum injection molding system and forming method |
| CN102529046B (en) * | 2011-12-26 | 2015-08-05 | 兴源环境科技股份有限公司 | Macromolecule plastic membrane pressure process injection molding system and the method for forming |
| CN109926556A (en) * | 2017-12-15 | 2019-06-25 | 现代自动车株式会社 | Vacuum centrifugal casting device |
| CN108407212A (en) * | 2018-05-15 | 2018-08-17 | 德清新亚塑业有限公司 | A kind of New Type of Injection Machine |
| CN111299545A (en) * | 2020-04-10 | 2020-06-19 | 台州巨东精密铸造有限公司 | Negative-pressure resin sand casting mold and casting process thereof |
| CN111299545B (en) * | 2020-04-10 | 2021-09-03 | 台州巨东精密铸造有限公司 | Negative pressure resin sand casting mold |
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