CN201357213Y - Sand core for casting under negative pressure - Google Patents
Sand core for casting under negative pressure Download PDFInfo
- Publication number
- CN201357213Y CN201357213Y CNU2009200361339U CN200920036133U CN201357213Y CN 201357213 Y CN201357213 Y CN 201357213Y CN U2009200361339 U CNU2009200361339 U CN U2009200361339U CN 200920036133 U CN200920036133 U CN 200920036133U CN 201357213 Y CN201357213 Y CN 201357213Y
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- CN
- China
- Prior art keywords
- sand box
- metal hose
- negative pressure
- sandbox
- stainless steel
- 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
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Abstract
The utility model discloses a sand box for casting blind hole castings under negative pressure. The sand box comprises a sand box body; and an interface of an extraction pipe is arranged at the bottom of the sand box body. The sand box is characterized in that a metal hose with a sealed end is mounted in the sand box body on the interface of the extraction pipe. By replacing stainless steel mesh fabric with the metal hose, the utility model has the advantages that air suction is realized through the gap of the metal hose, and the security of the operation of a vacuum pump, the service life of the sand box, and the finished product ratio of the castings are greatly improved because the gap of the metal hose is small, the effect thereof is better than that of the stainless steel mesh fabric, and the metal hose has less possibility of being burned out.
Description
Technical field:
The utility model relates to a kind of foundry engieering, relates in particular to a kind of negative pressure casting technology of blind hole foundry goods.
Technical background:
In order to improve surface quality of continuous castings and casting accuracy, now a lot of products all adopt the technology of negative pressure casting to cast.Owing in casting process, will vacuumize, the employed sandbox of present most manufacturer all adopts spacer structure, sandbox is divided into double-layer structure up and down with dividing plate, sand is stacked on the upper strata, and lower floor is a bleed-off passage, and several holes has evenly distributed on the dividing plate, in order to prevent that sand from sucking from the hole, influence the safe handling of vavuum pump, one deck stainless steel mesh cloth is arranged on dividing plate, be fixed on the dividing plate with press strip all around.There is following shortcoming in actual use in the sandbox of this structure: 1. because the not anti-burning of stainless steel mesh cloth, scalded into big hole easily,, will be caused collapse phenomenon as untimely discovery, cause the generation of substandard products and influence the safe operation of vavuum pump, so must often change stainless steel mesh cloth; 2. the sandbox of this structure is more loaded down with trivial details in manufacturing and use, will push down with press strip all around when changing screen cloth, will guarantee that simultaneously screen cloth itself is not by scratch; 3. higher to the quality requirement of stainless steel mesh cloth itself.
The utility model content:
The utility model purpose is to provide a kind of negative pressure casting sandbox of new structure, adopt metal hose to replace original dividing plate and stainless steel mesh cloth structure, guarantee that sand can not enter into vavuum pump on the one hand, cancelled the dividing plate on the sandbox on the other hand, reduced the manufacturing cost of product.
The utility model is achieved in that a kind of negative pressure casting sandbox, comprise the sandbox body, be provided with the exhaust tube interface in described sandbox body bottom, it is characterized in that: the metal hose that end sealing is installed on described sandbox body interior, exhaust tube interface.
The utility model compared with prior art has following advantage:
1. adopt metal hose to replace stainless steel mesh cloth, utilize the space of metal hose to realize air-breathing, because its space is little, its effect is better than stainless steel mesh cloth, be difficult to burn out owing to metal hose simultaneously, improved the security of vavuum pump operation and the service life of sandbox so greatly, and finished casting rate.
2. adopt the sandbox of this structure, in manufacturing and use, easily, need not dividing plate and stainless steel mesh cloth, reduced the production cost of foundry goods.
Description of drawings:
Fig. 1 is the structural representation of sandbox described in the utility model
1. sandbox body 2. metal hoses 3. exhaust tube interfaces
The specific embodiment:
As can be seen from Figure 1, a kind of negative pressure casting sandbox, comprise sandbox body 1, be provided with exhaust tube interface 3, it is characterized in that: the metal hose 2 that end sealing is installed on described sandbox body 1 inside, exhaust tube interface 3 in described sandbox body 1 bottom.
Claims (1)
1. negative pressure casting sandbox, comprise sandbox body (1), be provided with exhaust tube interface (3) in described sandbox body (1) bottom, it is characterized in that: the metal hose (2) that end sealing is installed on described sandbox body (1) inside, exhaust tube interface (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200361339U CN201357213Y (en) | 2009-03-10 | 2009-03-10 | Sand core for casting under negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200361339U CN201357213Y (en) | 2009-03-10 | 2009-03-10 | Sand core for casting under negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201357213Y true CN201357213Y (en) | 2009-12-09 |
Family
ID=41422971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200361339U Expired - Fee Related CN201357213Y (en) | 2009-03-10 | 2009-03-10 | Sand core for casting under negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201357213Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954461A (en) * | 2010-11-12 | 2011-01-26 | 侯松发 | Drag box for vacuum molding process |
| CN102581235A (en) * | 2012-03-28 | 2012-07-18 | 湖南省津市市嘉城汽车部件制造有限公司 | Multifunctional sand box for casting |
| CN102581222A (en) * | 2012-03-06 | 2012-07-18 | 江苏坤鸿机械制造有限公司 | Shell, sand box and preparation method of shell |
| CN103203435A (en) * | 2013-05-07 | 2013-07-17 | 泊头市青峰机械有限公司 | Casting sand box |
| CN106734983A (en) * | 2016-12-28 | 2017-05-31 | 重庆市九明机械制造有限公司 | Negative pressure evanescent mold sand box |
-
2009
- 2009-03-10 CN CNU2009200361339U patent/CN201357213Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954461A (en) * | 2010-11-12 | 2011-01-26 | 侯松发 | Drag box for vacuum molding process |
| CN102581222A (en) * | 2012-03-06 | 2012-07-18 | 江苏坤鸿机械制造有限公司 | Shell, sand box and preparation method of shell |
| CN102581235A (en) * | 2012-03-28 | 2012-07-18 | 湖南省津市市嘉城汽车部件制造有限公司 | Multifunctional sand box for casting |
| CN103203435A (en) * | 2013-05-07 | 2013-07-17 | 泊头市青峰机械有限公司 | Casting sand box |
| CN103203435B (en) * | 2013-05-07 | 2015-05-20 | 泊头市青峰机械有限公司 | Casting sand box |
| CN106734983A (en) * | 2016-12-28 | 2017-05-31 | 重庆市九明机械制造有限公司 | Negative pressure evanescent mold sand box |
| CN106734983B (en) * | 2016-12-28 | 2018-06-01 | 重庆市九明机械制造有限公司 | Negative pressure evanescent mold sand box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20120310 |