CN108655367A - A kind of vacuum casting process of the PU foaming moulds with air discharge duct - Google Patents
A kind of vacuum casting process of the PU foaming moulds with air discharge duct Download PDFInfo
- Publication number
- CN108655367A CN108655367A CN201810579554.XA CN201810579554A CN108655367A CN 108655367 A CN108655367 A CN 108655367A CN 201810579554 A CN201810579554 A CN 201810579554A CN 108655367 A CN108655367 A CN 108655367A
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- China
- Prior art keywords
- air discharge
- discharge duct
- vacuum
- casting
- casting process
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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
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to foaming mould technical fields, specifically disclose a kind of vacuum casting process of the PU foaming moulds with air discharge duct, are as follows：S1, air discharge duct is processed on model, process draw taper；S2, vacuum hole is processed in the bottom of model air discharge duct；S3, by air discharge duct with mold casting and forming；S4, Qi Mo obtain the foaming mould with air discharge duct.The mold with air discharge duct that casting technique of the present invention is cast out effectively has stayed in the air for failing discharge in air discharge duct, it ensure that the foamed shape of product, by processing the air discharge duct with draw taper on model, then by air discharge duct and mold moulding by casting together by the way of vacuum pouring, it is time-consuming and the phenomenon that be susceptible to sand hole to avoid Mechanical processing of casting, has saved manufacturing time and cost；It is conveniently stripped it to be provided with draw taper in processing.
Description
Technical field
Foaming mould technical field of the present invention, the vacuum pressing and casting work of specifically a kind of PU foaming moulds with air discharge duct
Skill.
Background technology
Consumption with market after Chinese automobile articles for use is persistently increased, and PU foaming moulds have pole in automotive trim product field
It is widely applied, so higher and higher to the quality requirement of PU foaming moulds, existing PU foaming moulds are in type cavity mould
Air discharge duct, the gas for being discharged in type cavity mould, in the prior art air discharge duct on mold parting surface can be equipped on die joint
Manufacture be all made of and be processed to obtain on PU foaming moulds, it is relatively time-consuming, laborious to process air discharge duct on mold parting surface,
And also there is prodigious loss to process equipment.So we need to be improved the manufacturing method of air discharge duct, the row of reduction
Air drain problem time-consuming and laborious when processing.
Invention content
The object of the present invention is to provide a kind of vacuum casting process of the PU foaming moulds with air discharge duct, will add on model
Work air discharge duct improves procedure of processing then by air discharge duct and mold together casting and forming, is easy out when reducing casting die processing
The phenomenon that existing sand hole.
In order to solve the above technical problems, the present invention provides a kind of vacuum pressing and casting works of the PU foaming moulds with air discharge duct
Skill is as follows：
S1, air discharge duct is processed on model, process draw taper；
S2, vacuum hole is processed in the bottom of model air discharge duct；
S3, by air discharge duct with mold casting and forming；
S4, Qi Mo obtain the foaming mould with air discharge duct.
Further, air discharge duct described in S1 is U-shaped air discharge duct, and when processing is processed into using one knife of numerically controlled processing equipment
Type.
Specifically, the U-shaped exhaust groove depth is 3-4mm, and bottom roundings R3, draw taper is 2-5 °.
Further, the numerically controlled processing equipment is the ball knife of numerically-controlled machine tool and diameter 3mm.
Further, the size of vacuum hole described in S2 be φ 0.8- φ 1mm, quantity be several, each two vacuum hole
Between spacing be 10-15mm.
Specifically, the casting of slot and mold is exhausted in S3 using vacuum casting process.
The beneficial effects of the invention are as follows：The mold with air discharge duct that casting technique of the present invention is cast out will effectively fail
The air of discharge has stayed in air discharge duct, ensure that the foamed shape of product, by being processed with draw taper on model
Air discharge duct, then by the way of vacuum pouring by air discharge duct and mold moulding by casting together, avoid Mechanical processing of casting it is time-consuming and
The phenomenon that being susceptible to sand hole has saved manufacturing time and cost；It is conveniently stripped it to be provided with draw taper in processing.
Description of the drawings
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical scheme of the present invention
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is technical process for casting figure of the present invention；
Fig. 2 is the structural schematic diagram of U-shaped air discharge duct of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of not making creative work it is all its
His embodiment, shall fall within the protection scope of the present invention.
In one particular embodiment of the present invention, as shown in Figure 1 to Figure 2, it specifically discloses a kind of with air discharge duct
The vacuum casting process of PU foaming moulds, is as follows：
S1, air discharge duct is processed on model, process draw taper；The air discharge duct is U-shaped air discharge duct, and number is used when processing
One knife processing and forming of ball knife of lathe and diameter 3mm is controlled, the U-shaped exhaust groove depth is 3-4mm, bottom roundings R3, demoulding
Gradient is 2-5 °.
S2, vacuum hole is processed in the bottom of model air discharge duct, by plastic film when the vacuum hole is vacuumized for founding
It is adsorbed onto on model, the size of the vacuum hole is φ 0.8- φ 1mm, and quantity is several, is determined according to the length of air discharge duct
The quantity of vacuum hole, the spacing between each two vacuum hole are 10-15mm；
S3, the cast that air discharge duct is used together to vacuum pressing and casting with mold are molded, and put model into sandbox when casting
And fix, the plastic film after last layer preheating is put, model vacuumizes, the bottom of air discharge duct has vacuum hole, modeling on model
Material film is adsorbed on model, is poured into molding sand and is shaken sandbox, sandbox is vacuumized, and air discharge duct founding is molded；
S4, Qi Mo obtain the foaming mould with air discharge duct.
The beneficial effects of the invention are as follows：The mold with air discharge duct that casting technique of the present invention is cast out will effectively fail
The air of discharge has stayed in air discharge duct, ensure that the foamed shape of product, by being processed with draw taper on model
Air discharge duct, then by the way of vacuum pouring by air discharge duct and mold moulding by casting together, avoid Mechanical processing of casting it is time-consuming and
The phenomenon that being susceptible to sand hole has saved manufacturing time and cost；It is conveniently stripped it to be provided with draw taper in processing.
Above disclosed is only a kind of preferred embodiment of the present invention, cannot limit the present invention's with this certainly
Interest field, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (6)
1. a kind of vacuum casting process of the PU foaming moulds with air discharge duct, which is characterized in that be as follows：
S1, air discharge duct is processed on model, process draw taper；
S2, vacuum hole is processed in the bottom of model air discharge duct；
S3, by air discharge duct with mold casting and forming；
S4, Qi Mo obtain the foaming mould with air discharge duct.
2. a kind of vacuum casting process of PU foaming moulds with air discharge duct according to claim 1, which is characterized in that
Air discharge duct described in S1 is U-shaped air discharge duct, and one knife processing and forming of numerically controlled processing equipment is used when processing.
3. a kind of vacuum casting process of PU foaming moulds with air discharge duct according to claim 2, which is characterized in that
The U-shaped exhaust groove depth is 3-4mm, and bottom roundings R3, draw taper is 2-5 °.
4. a kind of vacuum casting process of PU foaming moulds with air discharge duct according to claim 2, which is characterized in that
The numerically controlled processing equipment is the ball knife of numerically-controlled machine tool and diameter 3mm.
5. a kind of vacuum casting process of PU foaming moulds with air discharge duct according to claim 1, which is characterized in that
The size of vacuum hole described in S2 is φ 0.8- φ 1mm, and quantity is several, and the spacing between each two vacuum hole is 10-
15mm。
6. a kind of vacuum casting process of PU foaming moulds with air discharge duct according to claim 1, which is characterized in that
It is cast using vacuum casting process in S3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579554.XA CN108655367B (en) | 2018-06-07 | 2018-06-07 | Vacuum casting process of PU (polyurethane) foaming mold with exhaust groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579554.XA CN108655367B (en) | 2018-06-07 | 2018-06-07 | Vacuum casting process of PU (polyurethane) foaming mold with exhaust groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108655367A true CN108655367A (en) | 2018-10-16 |
| CN108655367B CN108655367B (en) | 2021-07-23 |
Family
ID=63775586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810579554.XA Active CN108655367B (en) | 2018-06-07 | 2018-06-07 | Vacuum casting process of PU (polyurethane) foaming mold with exhaust groove |
Country Status (1)
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| CN (1) | CN108655367B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201921976U (en) * | 2010-12-16 | 2011-08-10 | 山东蒙凌工程机械股份有限公司 | Special template for vacuum casting |
| CN102527935A (en) * | 2012-03-19 | 2012-07-04 | 南通超达机械科技有限公司 | Precision vacuum-casting method for foaming-mould aluminum casting |
| CN103586412A (en) * | 2013-11-11 | 2014-02-19 | 冀中能源邯郸矿业集团通方煤矿机械有限公司 | Method for casting ledges of middle troughs of scraper conveyer by V (vacuum) method |
| CN204194714U (en) * | 2014-08-18 | 2015-03-11 | 成都新同高复合器材有限公司 | V method casting molds |
| CN204997002U (en) * | 2015-08-12 | 2016-01-27 | 江苏双星特钢有限公司 | V method casting device of welt |
-
2018
- 2018-06-07 CN CN201810579554.XA patent/CN108655367B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201921976U (en) * | 2010-12-16 | 2011-08-10 | 山东蒙凌工程机械股份有限公司 | Special template for vacuum casting |
| CN102527935A (en) * | 2012-03-19 | 2012-07-04 | 南通超达机械科技有限公司 | Precision vacuum-casting method for foaming-mould aluminum casting |
| CN103586412A (en) * | 2013-11-11 | 2014-02-19 | 冀中能源邯郸矿业集团通方煤矿机械有限公司 | Method for casting ledges of middle troughs of scraper conveyer by V (vacuum) method |
| CN204194714U (en) * | 2014-08-18 | 2015-03-11 | 成都新同高复合器材有限公司 | V method casting molds |
| CN204997002U (en) * | 2015-08-12 | 2016-01-27 | 江苏双星特钢有限公司 | V method casting device of welt |
Non-Patent Citations (3)
| Title |
|---|
| 上海市机械工程学会铸造学组: "《特种铸造 国外现代铸造》", 30 April 1982, 上海科学技术文献出版社 * |
| 周平安: "《水泥工业耐磨材料与技术手册》", 30 August 2007, 中国建材工业出版社 * |
| 杜磊: "《钢铁耐磨铸件铸造技术》", 30 August 2006, 广东科技出版社 * |
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| CN108655367B (en) | 2021-07-23 |
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