CN203804195U - Negative pressure exhausting structure of die - Google Patents
Negative pressure exhausting structure of die Download PDFInfo
- Publication number
- CN203804195U CN203804195U CN201420081928.2U CN201420081928U CN203804195U CN 203804195 U CN203804195 U CN 203804195U CN 201420081928 U CN201420081928 U CN 201420081928U CN 203804195 U CN203804195 U CN 203804195U
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- China
- Prior art keywords
- negative pressure
- exhaust
- main pipeline
- exhaust main
- die
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- Expired - Fee Related
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Abstract
The utility model provides a negative pressure exhausting structure of a die. The negative pressure exhausting structure is used for quickly exhausting air from a die cavity during casting. The negative pressure exhausting structure comprises a die body; an air channel in which an exhaust plug is equipped is arranged in the die body. The negative pressure exhausting structure is characterized by further comprising a main exhaust pipeline and a negative pressure exhaust pipe; the air inlet end of the main exhaust pipeline is connected with an outlet of the air channel; one end of the negative pressure exhaust pipe is inserted into the main exhaust pipeline; an inlet of the negative pressure exhaust pipe is connected with a compressed air source; the outlet of the negative pressure exhaust pipe is positioned in the main exhaust pipeline. The negative pressure exhausting structure of the die is applicable to gravity casting or low-pressure casting of the die and has the characteristics of being simple in structure, easy to be operated, low in manufacturing cost, and no influence on the inner structure of the die cavity; the design is applied to manufacturing of a new die and can also be used for transforming the existing die. With the adoption of the negative pressure exhausting structure of the die, the exhausting efficiency can be obviously raised, the exhaust resistance can be reduced, and the yield and quality of a casting product can be improved.
Description
Technical field
The utility model relates to a kind of casting mould exhaust structure, especially for the negative pressure exhaust structure of gravitational casting or low pressure casting die.
Background technology
Casting is that liquid metals is poured into casting mould die cavity, a kind of processing method of cooling rear formation foundry goods.According to different casting techniques, casting is divided into gravitational casting and compression casting.Gravitational casting relies on gravity that liquid metals is poured in casting mould die cavity, and compression casting relies on pressurization that liquid metals is pressed into casting mould die cavity.Be divided into again high-pressure casting and low pressure casting according to the high-low pressure casting of pressure.In casting cycle, need gas in die cavity to discharge, with the foundry goods shrinkage cavity that prevents from producing because of gas effect, the casting flaw such as loose.At present, more high-pressure casting adopts and in chamber, vacuumizes or the mode exhaust of chamber inner high voltage; The exhaust of low pressure casting and gravitational casting is is mostly to adopt venting plug exhaust.In chamber, vacuumize or the exhaust mode exhaust efficiency of chamber inner high voltage is high but Mold Making cost is also higher, and easily damage sand mold; Venting plug exhaust has the problem that exhaust efficiency is low, exhaust has some setbacks.
Utility model content
The purpose of this utility model is the drawback for prior art, and a kind of simple in structure, exhaust efficiency is high, cost of manufacture is low mould negative pressure exhaust structure is provided
Problem described in the utility model realizes with following technical proposals:
A kind of mould negative pressure exhaust structure, it comprises die ontology, die ontology is provided with air flue, in air flue, be provided with venting plug, special feature is that described exhaust gear is also provided with exhaust main pipeline and negative pressure exhaust pipe, the inlet end of exhaust main pipeline connects air flue outlet, exhaust main pipeline is inserted in negative pressure exhaust pipe one end, and negative pressure exhaust tube inlet connects compressed air source, and the outlet of negative pressure exhaust pipe is positioned at exhaust main pipeline.
Above-mentioned mould negative pressure exhaust structure, described exhaust main pipeline forms L shaped by horizontal segment and vertical section, described negative pressure exhaust pipe is by vertical section of insertion of exhaust main pipeline, negative pressure exhaust pipe is positioned at the inserting paragraph of exhaust main pipeline in vertical section of extension of exhaust main pipeline, and its bearing of trend is consistent with the discharge directions of exhaust main pipeline.
Above-mentioned mould negative pressure exhaust structure, the outlet of described negative pressure exhaust pipe and exhaust main pipe outlet distance be 1.5-3 times of exhaust main internal diameter of the pipeline, the inserting paragraph length of described negative pressure exhaust pipe be not less than exhaust main pipeline vertical segment length 1/3rd.
Above-mentioned mould negative pressure exhaust structure, described exhaust main pipeline is provided with bulb valve, and bulb valve is positioned at the horizontal segment of exhaust main pipeline.
Above-mentioned mould negative pressure exhaust structure, described exhaust main install pipeline installing rack, the horizontal segment of installing rack and exhaust main pipeline is affixed, and installing rack is provided with installing hole.
The utility model designs for solving casting mould exhausting problem, the exhaust main pipeline that this structure is communicated with mould air flue in mould outer setting, and negative pressure exhaust pipe is inserted at exhaust main pipeline middle part.In the time that casting cycle needs to discharge the gas in die cavity fast, in negative pressure exhaust pipe, pass into compressed air, compressed air enters exhaust main pipeline through negative pressure exhaust pipe, in exhaust main pipeline, form a region of no pressure, make gas pressure in the mold cavity air pressure higher than exhaust main pipeline, thereby reach the object of smooth and easy discharge type intracavity gas.The utility model is applicable to gravitational casting or low pressure casting die, have simple in structure, be easy to realize, cost of manufacture is low, does not affect the features such as mold cavity internal structure, its design both can be used for new die make, also can be for the transformation to existing mold.Adopt the utility model can obviously improve exhaust efficiency, reduce exhaust resistance, be conducive to improve cast product qualification rate and quality.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is exhaust main pipeline and negative pressure exhaust tubular construction schematic diagram.
In figure, each list of reference numerals is: 1, die ontology, 2, exhaust main pipeline, 2-1, horizontal segment, 2-2, vertical section, 3, bulb valve, 4, installing rack, 4-1, installing hole, 5, negative pressure exhaust pipe, 5-1, inserting paragraph, 6, venting plug, 7, air flue.
Detailed description of the invention
Referring to Fig. 1, Fig. 2, the utility model comprises die ontology 1, and the die cavity of die ontology is provided with the air flue 7 that supplied gas is discharged, and is provided with venting plug 6 in air flue, and venting plug is provided with only can be for the gap of circulation of air.Exhaust efficiency while casting for improving, the utility model is provided with exhaust main pipeline 2 and negative pressure exhaust pipe 5.Exhaust main pipeline 2 is made up of L shaped horizontal segment 2-1 and a vertical section 2-2, the inlet end of exhaust main pipeline is arranged on horizontal segment, and exhaust main pipeline outlet side is arranged on vertical section, and the inlet end of exhaust main pipeline connects the outlet of air flue.Insert in vertical section of 2-2 of exhaust main pipeline one end of negative pressure exhaust pipe 5, the part that negative pressure exhaust pipe is positioned at exhaust main pipeline is referred to as inserting paragraph 5-1, inserting paragraph is in vertical section of extension of exhaust main pipeline, and its bearing of trend is identical with the discharge directions of exhaust main pipeline.The other end of negative pressure exhaust pipe connects compressed air source (attached not shown in FIG.).The operation principle of said structure is as follows: when casting cycle need to be discharged the gas in mold cavity, in negative pressure exhaust pipe, pass into compressed air, compressed air enters exhaust main pipeline by negative pressure exhaust pipe 5, in exhaust main pipeline, the exit region of negative pressure exhaust pipe forms parital vacuum, thereby make air pressure in mold cavity higher than the air pressure in exhaust main pipeline, under the effect of pressure differential, the gas in mold cavity is quickly discharged.
Still, referring to figure, Fig. 2, for the exit region that guarantees the negative pressure exhaust pipe in exhaust main pipeline forms parital vacuum, the outlet of negative pressure exhaust pipe and exhaust main pipe outlet distance are 1.5-3 times of exhaust main internal diameter of the pipeline.For preventing forming back draught by the compressed air of discharging in negative pressure exhaust pipe in exhaust main pipeline, the inserting paragraph 5-1 length of negative pressure exhaust pipe be not less than exhaust main pipeline vertical section of 2-2 length 1/3rd.
Still, referring to figure, Fig. 2, exhaust main pipeline is provided with bulb valve 3, and bulb valve is positioned at the horizontal segment 2-1 of exhaust main pipeline.Bulb valve is set can be at mould packing state by exhaust main pipe sealing.On exhaust main pipeline, be also provided with installing rack 4, the horizontal segment of installing rack and exhaust main pipeline is affixed, and installing rack is provided with installing hole 4-1.Utilize installing rack or to support fixing by exhaust main pipeline suspension.
Claims (5)
1. a mould negative pressure exhaust structure, it comprises die ontology (1), die ontology is provided with air flue (7), in air flue, be provided with venting plug (6), it is characterized in that, described exhaust gear is also provided with exhaust main pipeline (2) and negative pressure exhaust pipe (5), the inlet end of exhaust main pipeline connects air flue outlet, exhaust main pipeline is inserted in negative pressure exhaust pipe one end, and negative pressure exhaust tube inlet connects compressed air source, and the outlet of negative pressure exhaust pipe is positioned at exhaust main pipeline.
2. mould negative pressure exhaust structure according to claim 1, it is characterized in that, described exhaust main pipeline (2) forms L shaped by horizontal segment (2-1) and vertical section (2-2), described negative pressure exhaust pipe is by vertical section of insertion of exhaust main pipeline, negative pressure exhaust pipe is positioned at the inserting paragraph (5-1) of exhaust main pipeline in vertical section of extension of exhaust main pipeline, and its bearing of trend is consistent with the discharge directions of exhaust main pipeline.
3. mould negative pressure exhaust structure according to claim 2, it is characterized in that, the outlet of described negative pressure exhaust pipe and exhaust main pipe outlet distance be 1.5-3 times of exhaust main internal diameter of the pipeline, the inserting paragraph length of described negative pressure exhaust pipe be not less than exhaust main pipeline vertical segment length 1/3rd.
4. mould negative pressure exhaust structure according to claim 3, is characterized in that, described exhaust main pipeline is provided with bulb valve (3), and bulb valve is positioned at the horizontal segment (2-1) of exhaust main pipeline.
5. mould negative pressure exhaust structure according to claim 4, is characterized in that, described exhaust main install pipeline installing rack (4), and the horizontal segment of installing rack and exhaust main pipeline is affixed, and installing rack is provided with installing hole (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081928.2U CN203804195U (en) | 2014-02-26 | 2014-02-26 | Negative pressure exhausting structure of die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081928.2U CN203804195U (en) | 2014-02-26 | 2014-02-26 | Negative pressure exhausting structure of die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804195U true CN203804195U (en) | 2014-09-03 |
Family
ID=51443006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420081928.2U Expired - Fee Related CN203804195U (en) | 2014-02-26 | 2014-02-26 | Negative pressure exhausting structure of die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804195U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149512A (en) * | 2015-09-27 | 2015-12-16 | 共享装备股份有限公司 | Cavity for small casting overlapping modeling and sand blank for manufacturing cavity for small casting overlapping modeling |
| CN105458179A (en) * | 2016-01-15 | 2016-04-06 | 无锡蠡湖增压技术股份有限公司 | Metal mold with ventilation equipment |
| CN107838379A (en) * | 2017-12-05 | 2018-03-27 | 李理 | A kind of Casting Equipment of automobile engine cylinder-body for automobile making |
| CN110947907A (en) * | 2019-12-22 | 2020-04-03 | 宁波百宏模具有限公司 | Automobile cylinder cover die |
| CN111578146A (en) * | 2020-05-26 | 2020-08-25 | 万若（北京）环境工程技术有限公司 | Negative pressure pipe network monitoring station of negative pressure conveying system and water column plug eliminating method |
-
2014
- 2014-02-26 CN CN201420081928.2U patent/CN203804195U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149512A (en) * | 2015-09-27 | 2015-12-16 | 共享装备股份有限公司 | Cavity for small casting overlapping modeling and sand blank for manufacturing cavity for small casting overlapping modeling |
| CN105458179A (en) * | 2016-01-15 | 2016-04-06 | 无锡蠡湖增压技术股份有限公司 | Metal mold with ventilation equipment |
| CN107838379A (en) * | 2017-12-05 | 2018-03-27 | 李理 | A kind of Casting Equipment of automobile engine cylinder-body for automobile making |
| CN110947907A (en) * | 2019-12-22 | 2020-04-03 | 宁波百宏模具有限公司 | Automobile cylinder cover die |
| CN110947907B (en) * | 2019-12-22 | 2021-11-19 | 宁波百宏模具有限公司 | Automobile cylinder cover die |
| CN111578146A (en) * | 2020-05-26 | 2020-08-25 | 万若（北京）环境工程技术有限公司 | Negative pressure pipe network monitoring station of negative pressure conveying system and water column plug eliminating method |
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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: 20140903 |