CN105499539A - Sand counter-gravity casting exhausting pressure plate - Google Patents
Sand counter-gravity casting exhausting pressure plate Download PDFInfo
- Publication number
- CN105499539A CN105499539A CN201510895715.2A CN201510895715A CN105499539A CN 105499539 A CN105499539 A CN 105499539A CN 201510895715 A CN201510895715 A CN 201510895715A CN 105499539 A CN105499539 A CN 105499539A
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- China
- Prior art keywords
- exhaust
- air discharge
- pressing plate
- pressure plate
- casting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention relates to a sand counter-gravity casting exhausting pressure plate. The sand counter-gravity casting exhausting pressure plate is made of metal, is arranged on a mould and covers an exhaust hole in the mould, a plurality of parallel V-shaped exhaust grooves are formed in the contact region of the bottom surface of the exhausting pressure plate and the exhaust hole, a main exhaust passage is positioned on the outer sides of the V-shaped exhaust grooves and at the bottom of the exhausting pressure plate, a W-shaped exhaust groove is further formed in the outer side of the main exhaust passage and inside the exhausting pressure plate, one end of the W-shaped exhaust groove is communicated with the main exhaust passage, and the other end of the W-shaped exhaust groove extends out of the exhausting pressure plate. The sand counter-gravity casting exhausting pressure plate provided by the invention eliminates defects in the prior art, and is applied to magnesium alloy sand low pressure casting and aluminium alloy sand counter-pressure casting, the sealing effect and the exhausting effect are very good, the exhausting effect in a sand counter-gravity casting sealed mould is effectively improved, and the defect of undercasting caused by air resistance in the mould can be overcome.
Description
Technical field
The present invention relates to a kind of sand mold antigravity casting exhaust pressing plate, the molten metal namely in salable casting mold, avoids molten metal to spray, and the gas in casting mold can be discharged smoothly again, solves the deficient casting defect that sand mold antigravity casting produces because of vapour lock.
Background technology
This invention derives from the method that current sand mold antigravity casting resin sand covers sealing and the exhaust of exhaust rope, although this method seals casting mold, the molten metal in casting mold can be avoided to spray, but the method also encloses the exhaust passage in casting mold, the exhaust of exhaust rope can only be relied on, and exhaust rope is when docking with the steam vent on sand mold, there will be situation about can not dock completely, after resin sand imbedded by exhaust rope simultaneously, the gap of exhaust rope affects by covering resin sand, exhaust effect is caused to occur fluctuation, overall exhaust effect is not fine, the foundry goods deficient casting defect that frequent appearance causes because of vapour lock in casting mold.Therefore need to develop a kind of sealing method for exhausting newly.
Summary of the invention
The object of this invention is to provide a kind of sand mold antigravity casting exhaust pressing plate, effectively can promote the exhaust effect in sand mold antigravity casting sealing casting mold, overcome the deficient casting defect because vapour lock in casting mold causes.
Concrete technical scheme of the present invention is, described sand mold antigravity casting exhaust pressing plate is made of metal, to be arranged on casting mold and to cover on the steam vent of casting mold, the region that the bottom surface of described exhaust pressing plate contacts with steam vent is provided with the parallel V-arrangement air discharge duct of multiple tracks, described parallel V-arrangement air discharge duct is two groups and is staggered to form latticed, outside V-arrangement air discharge duct, be positioned at exhaust pressing plate bottom be provided with main exhaust, described all V-arrangement air discharge ducts are communicated with main exhaust; Outside main exhaust, the inside of exhaust pressing plate is also provided with W shape air discharge duct, and described W air discharge duct one end communicates with main exhaust, and the other end extends to and is vented outside pressing plate, and the W tee section of described W air discharge duct is perpendicular to discharge directions.The angle of two groups of described V-type air discharge ducts is 90 degree, and described W type air discharge duct, for briquetting installed by exhaust pressing plate, exhaust pressing plate and briquetting is provided with W shape surface, and W type air discharge duct is formed by two-part W shape surface gap cooperation.
V-type grid air discharge duct Main Function of the present invention docks completely with the steam vent on casting mold, unimpeded exhaust passage is formed between casting mold steam vent and main exhaust, gas in casting mold smooth and easyly can enter " V " type grid air discharge duct, and molten metal only can enter on a small quantity, namely can play the effect of sealing metal liquid, gas can be allowed again to be discharged in main exhaust; The gas that " V " type grid air discharge duct derives is held in the effect of main exhaust, is also the anti-runout groove of prevention " V " type grid air discharge duct when surprisingly there is excess metal liquid, the second defence line preventing molten metal from spraying; " W " type exhaust duct is gap exhaust duct, and gap is less, and gas can be unblocked, and molten metal cannot enter, the gas held in main exhaust is discharged in effect, and prevent in main exhaust outside the unexpected molten metal spillover-type entered, be last anti-runout defence line together simultaneously.This invention removes the deficiency in existing technology, be applied in magnesium alloy sand mold low pressure casting and aluminium alloy differential pressure founding, sealing effectiveness and exhaust effect are very good, effectively improve the exhaust effect in sand mold antigravity casting sealing casting mold, overcome the deficient casting defect because vapour lock in casting mold causes.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the A-A view of Fig. 1.
Detailed description of the invention
As shown in the figure, sand mold antigravity casting exhaust pressing plate 1 is made of metal, to be arranged on casting mold and to cover on the steam vent of casting mold, the region that the bottom surface of described exhaust pressing plate contacts with steam vent is provided with the parallel V-arrangement air discharge duct 3 of multiple tracks, described parallel V-arrangement air discharge duct 3 is two groups and is staggered to form latticed, outside V-arrangement air discharge duct 3, be positioned at exhaust pressing plate bottom be provided with main exhaust 4, described all V-arrangement air discharge ducts 3 are communicated with main exhaust 4; Outside main exhaust 4, the inside of exhaust pressing plate 1 is also provided with W shape air discharge duct 5, and described W air discharge duct 5 one end communicates with main exhaust 4, and the other end extends to and is vented outside pressing plate 1, and the W tee section of described W air discharge duct 5 is perpendicular to discharge directions.The angle of two groups of described V-type air discharge ducts 3 is 90 degree, and described W type air discharge duct 5 is that briquetting 2 installed by exhaust pressing plate, and exhaust pressing plate 1 and briquetting 2 are provided with W shape surface, and W type air discharge duct 5 is formed by two-part W shape surface gap cooperation.
Claims (3)
1. a sand mold antigravity casting exhaust pressing plate, it is characterized in that, described exhaust pressing plate (1) is made of metal, to be arranged on casting mold and to cover on the steam vent of casting mold, the region that the bottom surface of described exhaust pressing plate contacts with steam vent is provided with the parallel V-arrangement air discharge duct (3) of multiple tracks, described parallel V-arrangement air discharge duct (3) is two groups and is staggered to form latticed, V-arrangement air discharge duct (3) outside, be positioned at exhaust pressing plate bottom be provided with main exhaust (4), described all V-arrangement air discharge ducts (3) are communicated with main exhaust (4); W shape air discharge duct (5) is also provided with in the inside of main exhaust (4) outside, exhaust pressing plate (1), described W air discharge duct (5) one end communicates with main exhaust (4), the other end extends to exhaust pressing plate (1) outward, and the W tee section of described W air discharge duct (5) is perpendicular to discharge directions.
2. sand mold antigravity casting exhaust pressing plate as claimed in claim 1, it is characterized in that, the angle of two groups of described V-type air discharge ducts (3) is 90 degree.
3. sand mold antigravity casting exhaust pressing plate as claimed in claim 1, it is characterized in that, described W type air discharge duct (5) is for briquetting (2) installed by exhaust pressing plate, exhaust pressing plate (1) and briquetting (2) are provided with W shape surface, and W type air discharge duct 5 is formed by two-part W shape surface gap cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895715.2A CN105499539B (en) | 2015-12-08 | 2015-12-08 | Sand mould antigravity casting exhaust pressure plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895715.2A CN105499539B (en) | 2015-12-08 | 2015-12-08 | Sand mould antigravity casting exhaust pressure plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105499539A true CN105499539A (en) | 2016-04-20 |
| CN105499539B CN105499539B (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510895715.2A Active CN105499539B (en) | 2015-12-08 | 2015-12-08 | Sand mould antigravity casting exhaust pressure plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN105499539B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737903A (en) * | 2017-11-28 | 2018-02-27 | 重庆长安工业(集团)有限责任公司 | Large aluminum alloy casting sand mold low pressure casting exhaust apparatus |
| CN114273639A (en) * | 2021-12-17 | 2022-04-05 | 山东豪迈机械科技股份有限公司 | Active exhaust system and exhaust method for low-pressure casting of thin-wall aluminum alloy impeller |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299553A (en) * | 1994-05-09 | 1995-11-14 | Ahresty Corp | Gas venting device for metallic mold |
| JP2004058099A (en) * | 2002-07-29 | 2004-02-26 | Asahi Tec Corp | Metallic mold for casting |
| CN201124227Y (en) * | 2007-11-30 | 2008-10-01 | 宁波鑫达模具制造有限公司 | Vacuum exhausting device for mould |
| CN201644714U (en) * | 2010-01-05 | 2010-11-24 | 长沙市遥疆金属材料科技有限公司 | Venting plug with straight-through gradient pore structure |
| CN201913227U (en) * | 2011-01-11 | 2011-08-03 | 东莞市东升压铸模具有限公司 | Improved casting die exhausting structure |
| KR101105500B1 (en) * | 2010-02-25 | 2012-01-13 | 최진근 | Gas discharge vent for casting mold |
| KR200461523Y1 (en) * | 2011-09-21 | 2012-07-18 | 박대근 | ventilator for molding |
-
2015
- 2015-12-08 CN CN201510895715.2A patent/CN105499539B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299553A (en) * | 1994-05-09 | 1995-11-14 | Ahresty Corp | Gas venting device for metallic mold |
| JP2004058099A (en) * | 2002-07-29 | 2004-02-26 | Asahi Tec Corp | Metallic mold for casting |
| CN201124227Y (en) * | 2007-11-30 | 2008-10-01 | 宁波鑫达模具制造有限公司 | Vacuum exhausting device for mould |
| CN201644714U (en) * | 2010-01-05 | 2010-11-24 | 长沙市遥疆金属材料科技有限公司 | Venting plug with straight-through gradient pore structure |
| KR101105500B1 (en) * | 2010-02-25 | 2012-01-13 | 최진근 | Gas discharge vent for casting mold |
| CN201913227U (en) * | 2011-01-11 | 2011-08-03 | 东莞市东升压铸模具有限公司 | Improved casting die exhausting structure |
| KR200461523Y1 (en) * | 2011-09-21 | 2012-07-18 | 박대근 | ventilator for molding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737903A (en) * | 2017-11-28 | 2018-02-27 | 重庆长安工业(集团)有限责任公司 | Large aluminum alloy casting sand mold low pressure casting exhaust apparatus |
| CN114273639A (en) * | 2021-12-17 | 2022-04-05 | 山东豪迈机械科技股份有限公司 | Active exhaust system and exhaust method for low-pressure casting of thin-wall aluminum alloy impeller |
| CN114273639B (en) * | 2021-12-17 | 2023-10-03 | 山东豪迈机械科技股份有限公司 | Active exhaust system and method for low-pressure casting of thin-wall aluminum alloy impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105499539B (en) | 2020-01-07 |
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