CN202591548U - Metal gravity casting mold - Google Patents
Metal gravity casting mold Download PDFInfo
- Publication number
- CN202591548U CN202591548U CN 201220187147 CN201220187147U CN202591548U CN 202591548 U CN202591548 U CN 202591548U CN 201220187147 CN201220187147 CN 201220187147 CN 201220187147 U CN201220187147 U CN 201220187147U CN 202591548 U CN202591548 U CN 202591548U
- Authority
- CN
- China
- Prior art keywords
- metal
- exhaust passage
- die
- inner chamber
- gravity casting
- 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
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Abstract
The utility model relates to gravity casting, in particular to a metal gravity casting mold, which comprises a metal mold and an inner cavity sand core, wherein a plurality of positioning heads are arranged on the inner cavity sand core, and an exhaust channel is arranged in the inner cavity sand core; and an outlet of the exhaust channel is positioned in the positioning heads and is communicated with the outside of the metal mold. The utility model aims to provide the metal gravity casting mold and a casting method capable of reducing the production process of castings and having less exhaust emission in the casting process so as to solve the problems that in the traditional metal gravity casting, surplus structures are generated on the castings and the exhaust emission is large.
Description
Technical field
The utility model relates to metal mold gravity casting, relates in particular to metal gravity casting die, belongs to the gravitational casting field.
Background technology
Gravitational casting is meant that molten metal injects the technology of casting mold under the terrestrial gravitation effect, the power of also weighing casting.Gravitational casting comprises sand casting, metal mold casting, model casting, lost foam casting, mud die cast etc.Metal mold weight casting is to make casting with hollow casting mold mould and rely on the terrestrial gravitation effect to make the technology of molten metal injection hollow casting mold mould with heat-resisting alloy steel.Casting mold mould in the metal mold gravity casting can repeated multiple times use, and molten metal of every cast just obtains foundry goods one time, and is highly efficient in productivity.Not only dimensional accuracy is good for the foundry goods of producing through metal mold gravity casting, any surface finish, and also under the situation of cast same metal liquid, casting strength is higher than sand mold, more difficult damage.
When producing the shell of pipe fitting such as tap, also the inner chamber that the inner chamber core forms pipe fitting need be installed in metal die through the metal mold gravity casting method.The inner chamber core is by resin and solidifies adding ingredient (below be called adhesives) molding sand is fixedly formed.When molten metal watered on the inner chamber core, the adhesives in the inner chamber core was heated and burns, and makes molding sand defeated and dispersed, to realize the taking-up of inner chamber core from foundry goods.The method that existing waste gas that is produced when adhesives is burnt and the air in the die cavity are discharged does, design is with the steam vent that die cavity directly is communicated with, and makes gas directly flow to steam vent and discharge from die cavity.
Number be 2006100306135 at Chinese patent, open day be February 27 in 2007 day, be called in the patent documentation of " metal gravity casting die of tin bronze casting and casting method " and disclose a kind of metal gravity casting die and casting method.The method of carrying out exhaust in this patent documentation is above-mentioned method.
It is not enough below existing method for exhausting exists: because molten metal can overflow in the steam vent; Cause cast(ing) surface to be connected with that molten metal solidifies in steam vent and the residual fraction that stays (below be called unnecessary structure); Foundry goods need excise unnecessary structure after taking out in the mould, so manufacturing procedure is many; The exhausted air quantity that produces when the binding material in the inner chamber core burns is big, and is big to the pollution of environment.
The utility model content
The utility model aims to provide the little metal gravity casting die of discharge amount of exhaust gas in a kind of production process that can reduce foundry goods and the casting process, can produce unnecessary structure and the big problem of discharge amount of exhaust gas to solve on the existing foundry goods of existing metal mold gravity casting.
Above technical problem solves through following technical proposal: a kind of metal gravity casting die; Comprise metal die and inner chamber core; Said inner chamber core is provided with some positioning heads; Be provided with the exhaust passage in the said inner chamber core, the outlet of exhaust passage is positioned on the said positioning head, and the outlet of exhaust passage is connected with the metal die outside.One side makes the thickness attenuation of molding sand layer make that again gas can be more prone to see through the inner chamber core and discharge after can causing the gas permeability of core to increase after the binding material burning, in the inner chamber core, the exhaust passage being set on the other hand.Under the situation that does not have other more unobstructed exhaust pathway to walk on the mould, gas can enter in the exhaust passage and from steam vent through core naturally and discharge.Because mould in use positioning head is to be blocked in the corresponding locating hole; The gas outlet of exhaust passage is arranged on the connector; Make the exhaust passage separate with die cavity, molten metal can not enter in the exhaust passage and form unnecessary structure at cast(ing) surface.Owing in the inner chamber core, be provided with the exhaust passage, make that making the used material of inner chamber core reduces, the amount of adhesives also reduces, so the exhausted air quantity reduction that is produced during burning.Die cavity can be set directly on the metal die, also can in metal die, design internal mold according to the needs of the metal material that constitutes foundry goods, and die cavity is arranged on the internal mold.
As preferably, said exhaust passage is a straight channel.Only need on the inner chamber core mold, to install a push rod and can form the exhaust passage.Convenient when making the exhaust passage.
As preferably, said exhaust passage is the big tapered channel in inner little outer end.Make in the process of exhaust passage, push rod is inserted into when forming passing away and extracting push rod on the inner chamber core easily laborsaving, further improve the convenience when making the exhaust passage.
Die cavity as being preferably formed the cast member face shaping is arranged at metal die; Metal die is provided with the locating hole that matches with connector; The locating hole that matches with the positioning head that is provided with the outlet of exhaust passage in the said locating hole is a through hole, and the outlet of exhaust passage is positioned on the end face of connector.Simple and compact for structure, be convenient to manufacture.
As preferably, metal die comprises first half module and second half module, and locating hole is surrounded with half one on second half module of being positioned at by half one on first half module of being positioned at and forms.It is convenient when assembly and disassembly constitute each parts of metal gravity mould.Locating hole is carried out perforate and convenient when safeguarding.
As preferably, said exhaust passage is arranged on the maximum position of gauge of inner chamber core.Good permeability is convenient to gas and is flow to fast in the exhaust passage, is difficult in foundry goods, producing bubble.The volume of inner chamber core residual fraction is little, can reduce the exhaust gas discharging amount more effectively.Can make binding material by fully burning, be convenient to the inner chamber core and in foundry goods, take out.
The utlity model has following advantage; Through in the inner chamber core, designing the exhaust passage and the outlet of exhaust passage being positioned on the connector, on the surface of foundry goods, can not form unnecessary structure, the processing step when foundry goods is made is few; Improved the utilization rate of molten metal; Needed material consumption amount is few when making the inner chamber core, and the exhausted air quantity that produces during casting is few, and the gas in the die cavity is discharged in the exhaust passage through the inner chamber core thoroughly; For the mode of existing direct discharge, the compactness of foundry goods is good.
Description of drawings
Fig. 1 is the split view of the metal gravity casting die among the utility model embodiment one.
Fig. 2 is the fit view of the metal gravity casting die among the utility model embodiment one.
Fig. 3 is the sketch map of the metal gravity casting die among the utility model embodiment two.
Among the figure: metal die 1, the first half module 11, the second half modules 12, die cavity 13, plug hole 14, locating hole 15, air flue 16, inner chamber core 2, connector 21, exhaust passage 22, the outlet 221 of exhaust passage.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment one, and referring to Fig. 1, a kind of metal gravity casting die comprises metal die 1 and inner chamber core 2.
Metal die 1 comprises first half module 11 and second half module 12.Be provided with die cavity 13 in the metal die 1.Metal die 1 is provided with a plug hole 14 and four locating holes 15.There are three to be through hole in four locating holes 15.Plug hole 14 is arranged on the joint face of first half module 11 and second half module 12 with locating hole 15.Tapping hole only is opened on first half module 11.Locating hole 15 is surrounded with half one on second half module of being positioned at by half one on first half module of being positioned at and forms.
Inner chamber core 2 is bonded together through adhesives by molding sand and forms.Inner chamber core 2 is provided with four connectors 21.Inner chamber core 2 is provided with end face on since four connectors one towards inner chamber core 2 inner exhaust passages 22 of extending.Exhaust passage 22 is a conicylindrical passage.Inner chamber core 2 is provided with the thickness maximum at the position of exhaust passage 22.
Referring to Fig. 1 with referring to Fig. 2, the method that the metal gravity casting die through the utility model carries out metal mold gravity casting is: the first step, make first half module 11 and second half module 12 be in the split state.Second step was placed on inner chamber core 2 in the die cavity 13 in the metal die, through four positioning heads 21 being located in correspondingly the relative position of locating inner chamber core 2 and die cavity 13 in four locating holes 15.The 3rd goes on foot, first half module 11 is closed up with second half module 12 be in the same place; When metal die 1 closed up together, the locating hole of the outlet 221 of exhaust passage through correspondence was connected with the space outerpace of metal die 1.All positioning heads 21 do not stretch out locating hole 15.Close up in the process of first half module and second half module, realize the location of first half module and second half module through half one on first half module is alignd with half one on second half module of being positioned at.The 4th step; Molten metal is injected from plug hole 14; Molten metal flow in the die cavity 13 under the effect of gravity; Molten metal floods and makes the adhesives burning that the molding sand that constitutes the inner chamber core bonds together in the process of inner chamber core 2 and cause the inner chamber core defeated and dispersed, waste gas that burning is produced and the air permeation inner chamber core 2 in the die cavity and get into exhaust passage 22 and discharge from the outlet 221 of exhaust passage.The process that molten metal injects from plug hole, plug hole is in the angle that the same level face is 10 ° when just having begun, and in the process of limit cast, rotate on the metal gravity casting die limit, turns to the position that plug hole same level face is 90 ° angle at last.This kind mode is poured into a mould, and molten metal is gently flow in the die cavity, makes that foundry goods can be owing to the mobile drop of liquation produces defectives such as pore, slag inclusion, cold shut, cold shot too greatly.In the 5th step, separately first half module 11 and second half module 12 take out foundry goods with foundry goods through from the locating hole 15 of through-hole structure, going sled to dial locating piece 21 from die cavity 13.The 6th one, the molding sand that will constitute inner chamber core 2 pour out in foundry goods.Promptly accomplished the casting process of foundry goods.
Embodiment two, and referring to Fig. 3, with the difference of embodiment one be: it promptly is not through hole that all locating holes 15 do not run through metal die 1.The outlet 221 of exhaust passage is arranged on the side of positioning head 21.In metal die, be provided with the air flue 16 of the outlet 221 of the outer surface that is communicated with metal die 1 and exhaust passage.In the casting process, the gas in the exhaust hole 22 is discharged the outside of metal die 1 through air flue 16.
Claims (6)
1. metal gravity casting die; Comprise metal die and inner chamber core; Said inner chamber core is provided with some positioning heads, it is characterized in that, is provided with the exhaust passage in the said inner chamber core; The outlet of exhaust passage is positioned on the said positioning head, and the outlet of exhaust passage is connected with the metal die outside.
2. metal gravity casting die according to claim 1 is characterized in that, said exhaust passage is a straight channel.
3. metal gravity casting die according to claim 2 is characterized in that, said exhaust passage is the big tapered channel in inner little outer end.
4. according to claim 1 or 2 or 3 described metal gravity casting dies; It is characterized in that; The die cavity that forms the cast member face shaping is arranged at metal die; Metal die is provided with the locating hole that matches with connector, and the locating hole that matches with the positioning head that is provided with the outlet of exhaust passage in the said locating hole is a through hole, and the outlet of exhaust passage is positioned on the end face of connector.
5. metal gravity casting die according to claim 4 is characterized in that, metal die comprises first half module and second half module, and locating hole is surrounded with half one on second half module of being positioned at by half one on first half module of being positioned at and forms.
6. according to claim 1 or 2 or 3 described metal gravity casting dies, it is characterized in that said exhaust passage is arranged on the maximum position of gauge of inner chamber core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187147 CN202591548U (en) | 2012-04-28 | 2012-04-28 | Metal gravity casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187147 CN202591548U (en) | 2012-04-28 | 2012-04-28 | Metal gravity casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202591548U true CN202591548U (en) | 2012-12-12 |
Family
ID=47309131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220187147 Expired - Fee Related CN202591548U (en) | 2012-04-28 | 2012-04-28 | Metal gravity casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202591548U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699274A (en) * | 2012-04-28 | 2012-10-03 | 宁波敏宝卫浴五金水暖洁具有限公司 | Metal gravity casting mould and method |
| CN103317119A (en) * | 2013-06-05 | 2013-09-25 | 南通爱尔思轻合金精密成型有限公司 | Metal low-pressure casting process |
| CN104014742A (en) * | 2014-05-09 | 2014-09-03 | 大连理工大学 | Casting process and casting mould of large propeller hub body |
| CN111136224A (en) * | 2020-01-19 | 2020-05-12 | 四川省犍为恒益铝业有限公司 | Method for fixing sand core on metal mold |
-
2012
- 2012-04-28 CN CN 201220187147 patent/CN202591548U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699274A (en) * | 2012-04-28 | 2012-10-03 | 宁波敏宝卫浴五金水暖洁具有限公司 | Metal gravity casting mould and method |
| CN102699274B (en) * | 2012-04-28 | 2014-04-23 | 宁波敏宝卫浴五金水暖洁具有限公司 | Metal gravity casting mould and method |
| CN103317119A (en) * | 2013-06-05 | 2013-09-25 | 南通爱尔思轻合金精密成型有限公司 | Metal low-pressure casting process |
| CN103317119B (en) * | 2013-06-05 | 2014-12-24 | 南通爱尔思轻合金精密成型有限公司 | Metal low-pressure casting process |
| CN104014742A (en) * | 2014-05-09 | 2014-09-03 | 大连理工大学 | Casting process and casting mould of large propeller hub body |
| CN111136224A (en) * | 2020-01-19 | 2020-05-12 | 四川省犍为恒益铝业有限公司 | Method for fixing sand core on metal mold |
| CN111136224B (en) * | 2020-01-19 | 2021-11-19 | 四川省犍为恒益铝业有限公司 | Method for fixing sand core on metal mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102699274B (en) | Metal gravity casting mould and method | |
| CN102935491A (en) | Metal section mould with controllable cross section and gravity slantingly-rotated foundry technique of aluminum alloy cylinder cover of metal section mould | |
| CN103736928B (en) | A kind of evaporative pattern running gate system of gear box | |
| CN205904387U (en) | Nickelic magnesium iron blast pipe the gating system | |
| CN202591548U (en) | Metal gravity casting mold | |
| CN101817061B (en) | Sand core structure for precasting high-pressure oil channel of engine cylinder cover and precasting method | |
| CN101537478A (en) | Die-casting die casting system for magnesium alloy automobile engine cylinder head casing | |
| CN111531163B (en) | Casting process of motor shell with spiral cooling water channel | |
| CN110039007B (en) | Cylinder body casting gating system | |
| CN207043278U (en) | The casting system of wind power gear cover plate transparent cover casting | |
| CN103170580B (en) | A kind of casting technique of gas turbine blower bearing block and running gate system thereof | |
| CN109128032B (en) | High-nickel austenitic ductile iron engine exhaust pipe back fire feeding process | |
| CN205096484U (en) | Flywheel mould that type cluster of binding watered | |
| CN201432089Y (en) | Pouring system for magnesium alloy automobile engine cylinder cover die-casting mold | |
| CN110918923B (en) | Casting process of sequential directional solidification double-layer conical shell structure casting | |
| CN111940675A (en) | Novel casting method of steam turbine combined steam valve casing steel casting | |
| CN113828735B (en) | Pouring system and investment casting process of high-temperature alloy elbow | |
| CN102794412A (en) | Water turbine sleeve casting mould assembling box | |
| CN202079258U (en) | Water turbine sleeve moulding assembling box | |
| CN107218426B (en) | Pilot valve casting and casting process thereof | |
| CN204321138U (en) | The quick cooling die of a kind of gravitational casting aluminium recovery | |
| CN203635861U (en) | Running wheel body sand mold with sand core | |
| CN202079246U (en) | Casting head for cast cylinder head | |
| CN203751247U (en) | Casting and pouring device of engine cylinder cover | |
| CN202207772U (en) | Sand mould structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20170428 |