CN101456234A - Method for producing high coherence degree EPS big plate - Google Patents
Method for producing high coherence degree EPS big plate Download PDFInfo
- Publication number
- CN101456234A CN101456234A CNA2009100953088A CN200910095308A CN101456234A CN 101456234 A CN101456234 A CN 101456234A CN A2009100953088 A CNA2009100953088 A CN A2009100953088A CN 200910095308 A CN200910095308 A CN 200910095308A CN 101456234 A CN101456234 A CN 101456234A
- Authority
- CN
- China
- Prior art keywords
- penetrate
- eps
- seconds
- mould
- time
- 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.)
- Pending
Links
Abstract
The invention relates to a method for manufacturing an automobile-manufacturing special mould, namely a foaming material of an expendable pattern (volatile pattern), in particular to a method for manufacturing a high-coherence EPS large panel. The method comprises the following steps: closing the mould; locking the mould; feeding materials; supplying materials in vacuum; recirculating scrap; prevacuumizing; penetrating by vapor repeatedly for 18 to 29 seconds; heating; maintaining pressure; reducing pressure; cooling; unlocking the mould; opening the mould; unloading the mould; pushing out the panel; and resetting. Compared with the prior method for manufacturing the EPS large panel, the manufacture method saves electricity and vapor; the EPS large panel manufactured by the method has the advantages of good coherence, more elastic product, evenly cured panel material, nice appearance and good smoothness; and the large panel is ensured from loosing and other phenomena during the manufacturing, and can completely meet the requirement to be used as the expendable pattern (the volatile pattern), thereby filling up domestic blank of using the large panel as the expendable pattern(the volatile pattern).
Description
Technical field
The present invention relates to a kind of production automobile making particular manufacturing craft, the method for mould (gasified pattern) foamed material that promptly disappears.
Background technology
Continuous development along with foundry industry, the casting quality and the shape need of founding are more and more higher, some interior shape complexity, and the high foundry goods of required precision can not reach requirement with common founding technology, thereby occur making foundry goods with disappearance mould (gasified pattern) method, general small sized product can be made with the foam automatic moulding machine, but large-scale product, and the large-scale foamed plastics of using as the automobile making particular manufacturing craft just can not reach the requirement of disappearance mould (gasified pattern) with automatic moulding machine.And the technical indicator of the big plate of the EPS (polystyrene) that domestic a lot of manufacturers produce does not all reach the requirement of the large-scale foamed plastics that the automobile making particular manufacturing craft uses, mainly be that degree of cohering is not up to standard, degree of cohering main cause not up to standard is because the sheet material volume of the big plate of EPS is big, thickness is big, the slaking of pre-expanded beads is inhomogeneous when penetrating with steam in the production process, cause the surface and the intermediate mass of sheet material inconsistent, big plate has foam beads when being processed into the disappearance mould and is scattered, when influencing the foundry worker and casting quality.
Summary of the invention
For providing a kind of degree of cohering good, the sheet material slaking is even, meets the production method of automobile making particular manufacturing craft with the big plate of EPS of the requirement of large-scale foamed plastics.
A kind of method of producing high coherence degree EPS big plate may further comprise the steps:
A. close mould, locked mode, reinforced,
B. vacuum feed supplement, feed back,
C. forevacuum,
D. many steam penetrate, and penetrate 18～29 seconds total times,
E. heating, pressurize,
F. reduce pressure, cool off,
G. separate mould lock, die sinking, the demoulding, eject, reset.
The technology of vacuum feed supplement makes machine reinforced full, and the EPS that produces is big, and plate density is good, and the forevacuum before the heating makes the cold air in the machine few, when saving steam, makes also that product is easier to penetrate, and the sheet material slaking is even, and the surface of sheet material is consistent with intermediate mass.
The repeatedly steam of preferred steps d penetrates and is divided into three steps, penetrates to " 7 " font penetrates for the first time, penetrates for the second time to falling " 7 " font to penetrate, and penetrates for the third time to remaining two end face is penetrated.
Most preferably the repeatedly steam of steps d penetrates and is divided into four steps, penetrates to " 7 " font penetrates for the first time, penetrates for the second time to falling " 7 " font to penetrate, and penetrates for the third time to remaining two end face is penetrated, and penetrates for the 4th time to be six and to penetrate simultaneously.This penetrating method penetrates effective, and the pre-expanded beads slaking is even, and product degree of cohering is good, and quality is finer and smoother.
Preferred scheme all adopts low pressure, big flow steam to penetrate for repeatedly penetrating.The steam of low pressure, big flow penetrates to make to penetrate and shortens greatly total time, save steam 1/3, in the production method of prior art, the pressure that generally penetrates steam is about 8Kg, after changing low pressure and mass flow steam among the present invention into and penetrating, the pressure that penetrates steam is about 4Kg, reduced drain time, the sheet material slaking is more even, and board quality is better, also because low pressure, therefore steam had both been saved in rare gas leakage in the production process, had also reduced workshop there was dampness in the air degree, also reduce noise, improved the working environment of shop floor worker.
During preferred the cooling, adopt air-cooled and alternately cooling of vacuum cooled.Can make the product cooling faster, more energy-conservation like this, the moisture of product the inside still less.
Compare with the method for producing the big plate of EPS in the past, this production method power saving economizes steam, the big plate of the EPS that produces in this way, degree of cohering is good, and product is more flexible, the sheet material slaking is even, outward appearance is beautiful, and fineness is good, can guarantee phenomenons such as pitching does not appear in process in big plate, satisfy requirement fully, filled up the blank that the big plate of domestic usefulness is done disappearance mould (gasified pattern) as disappearance mould (gasified pattern).
The specific embodiment
Embodiment 1
With the big plate of EPS office mould, locked mode, reinforced, being about to pre-expanded beads adds in the big plate machine die cavity by feeding gun, carry out the vacuum feed supplement after a while, make pre-expanded beads fill up whole big plate machine die cavity, close feeding gun, carry out forevacuum, reach negative pressure 0.2～0.5Kg, steam is carried out the voltage stabilizing first time with high limit relay, adopt pressure control transmitter and proportional control valve that steam is carried out the voltage stabilizing second time, steam inlet latus rectum: DN150mm is that the low pressure and mass flow steam of 4Kg carries out " 7 " font successively and penetrated 12～20 seconds with pressure after the voltage stabilizing, and " 7 " font of falling penetrated 3～5 seconds, penetrating 1～2 second of remaining two end face, carry out six faces again and penetrated simultaneously 1～2 second, heating die cavity to die cavity internal pressure remains on 0.7～1Kg, keeps 1～20 second, be decompressed to normal pressure, adopt air-cooled and vacuum cooled alternately to be cooled to normal temperature.Xie Mo locks, opens die cavity, the demoulding, pushing-off product EPS, die cavity is resetted.The idiographic flow parameter changes as following table:
| Sequence number | Forevacuum | " 7 " font penetrates | " 7 " font of falling penetrates | The residue both ends of the surface penetrate | Six penetrate simultaneously | The heating pressurize | The finished product caking ability |
| 1 | Negative pressure 0.2Kg | 12 seconds | 5 seconds | 1 second | 0.7Kg, 20 seconds | Qualified | |
| 2 | Negative pressure 0.2Kg | 15 seconds | 5 seconds | 2 seconds | 1Kg, 20 seconds | Qualified | |
| 3 | Negative pressure 0.4Kg | 18 seconds | 3 seconds | 1 second | 2 seconds | 0.7Kg, 15 seconds | Qualified |
| 4 | Negative pressure 0.5Kg | 20 seconds | 5 seconds | 2 seconds | 2 seconds | 1Kg, 10 seconds | Qualified |
| 5 | Negative pressure 0.5Kg | 12 seconds | 3 seconds | 2 seconds | 2 seconds | 1Kg, 1 second | Qualified |
| 6 | Negative pressure 0.5Kg | 20 seconds | 3 seconds | 1 second | 0.7Kg, 8 seconds | Qualified | |
| 7 | Negative pressure 0.5Kg | 15 seconds | 3 seconds | 2 seconds | 1 second | 1Kg, 5 seconds | Qualified |
| 8 | Negative pressure 0.2Kg | 20 seconds | 5 seconds | 1 second | 0.7Kg, 10 seconds | Qualified | |
| 9 | Negative pressure 0.4Kg | 12 seconds | 5 seconds | 1 second | 1 second | 0.7Kg, 15 seconds | Qualified |
| 10 | Negative pressure 0.5Kg | 20 seconds | 3 seconds | 2 seconds | 1Kg, 20 seconds | Qualified | |
| 11 | Negative pressure 0.2Kg | 20 seconds | 3 seconds | 2 seconds | 0.7Kg, 20 seconds | Qualified | |
| 12 | Negative pressure 0.2Kg | 12 seconds | 5 seconds | 1 second | 1 second | 1Kg, 10 seconds | Qualified |
| 13 | Negative pressure 0.5Kg | 12 seconds | 5 seconds | 1 second | 1Kg, 20 seconds | Qualified | |
| 14 | Negative pressure 0.5Kg | 20 seconds | 3 seconds | 1 second | 1 second | 0.7Kg, 15 seconds | Qualified |
| 15 | Negative pressure 0.5Kg | 15 seconds | 3 seconds | 2 seconds | 1Kg, 20 seconds | Qualified | |
| 16 | Negative pressure 0.2Kg | 20 seconds | 3 seconds | 1 second | 1 second | 0.7Kg, 5 seconds | Qualified |
The standard that product degree of cohering is qualified is: pull open the big plate of finished product EPS, be not granular foam and come off, degree of cohering is good, and product is more flexible, and the sheet material slaking is even, and outward appearance is beautiful, and fineness is good, can guarantee phenomenons such as pitching does not appear in process in big plate.
Claims (5)
1. method of producing high coherence degree EPS big plate may further comprise the steps:
A. close mould, locked mode, reinforced,
B. vacuum feed supplement, feed back,
C. forevacuum,
D. many steam penetrate, and penetrate 18～29 seconds total times,
E. heating, pressurize,
F. reduce pressure, cool off,
G. separate mould lock, die sinking, the demoulding, eject, reset.
2. a kind of method of producing high coherence degree EPS big plate as claimed in claim 1, the repeatedly steam that it is characterized in that steps d penetrates and is divided into three steps, penetrate for the first time to " 7 " font and penetrate, penetrate for the second time to falling " 7 " font and penetrate, penetrate for the third time to remaining two end face is penetrated.
3. a kind of method of producing high coherence degree EPS big plate as claimed in claim 1, the repeatedly steam that it is characterized in that steps d penetrates and is divided into four steps, penetrate for the first time to " 7 " font and penetrate, penetrate for the second time to falling " 7 " font and penetrate, penetrate for the third time to remaining two end face is penetrated, penetrate for the 4th time and to be six and to penetrate simultaneously.
4. a kind of method of producing high coherence degree EPS big plate as claimed in claim 1 is characterized in that repeatedly penetrating and all adopts low pressure, big flow steam to penetrate.
5. a kind of method of producing high coherence degree EPS big plate as claimed in claim 1 when it is characterized in that cooling off, adopts air-cooled and alternately cooling of vacuum cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100953088A CN101456234A (en) | 2009-01-05 | 2009-01-05 | Method for producing high coherence degree EPS big plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100953088A CN101456234A (en) | 2009-01-05 | 2009-01-05 | Method for producing high coherence degree EPS big plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101456234A true CN101456234A (en) | 2009-06-17 |
Family
ID=40767495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100953088A Pending CN101456234A (en) | 2009-01-05 | 2009-01-05 | Method for producing high coherence degree EPS big plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101456234A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649308A (en) * | 2011-02-23 | 2012-08-29 | Ykk株式会社 | Mold-opening control method of injection molding machine |
| CN106079218A (en) * | 2016-06-08 | 2016-11-09 | 惠州景华包装制品有限公司 | A kind of EPS vacuum forming technique and formation system |
| CN107650395A (en) * | 2017-09-21 | 2018-02-02 | 安徽工程大学 | A kind of FD disappearances template material preparation method and its obtained disappearance template material |
| CN112008040A (en) * | 2020-08-27 | 2020-12-01 | 河南天缘新材料有限公司 | Secondary forming process of lost foam white mold defective products |
| CN112045148A (en) * | 2020-08-27 | 2020-12-08 | 河南天缘新材料有限公司 | Lost foam equidirectional pulse type double-gun or multi-gun automatic feeding process |
| CN114082885A (en) * | 2021-11-22 | 2022-02-25 | 常州钜苓铸造有限公司 | Forming machine process special for vertical lost foam |
-
2009
- 2009-01-05 CN CNA2009100953088A patent/CN101456234A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649308A (en) * | 2011-02-23 | 2012-08-29 | Ykk株式会社 | Mold-opening control method of injection molding machine |
| CN106079218A (en) * | 2016-06-08 | 2016-11-09 | 惠州景华包装制品有限公司 | A kind of EPS vacuum forming technique and formation system |
| CN107650395A (en) * | 2017-09-21 | 2018-02-02 | 安徽工程大学 | A kind of FD disappearances template material preparation method and its obtained disappearance template material |
| CN112008040A (en) * | 2020-08-27 | 2020-12-01 | 河南天缘新材料有限公司 | Secondary forming process of lost foam white mold defective products |
| CN112045148A (en) * | 2020-08-27 | 2020-12-08 | 河南天缘新材料有限公司 | Lost foam equidirectional pulse type double-gun or multi-gun automatic feeding process |
| CN114082885A (en) * | 2021-11-22 | 2022-02-25 | 常州钜苓铸造有限公司 | Forming machine process special for vertical lost foam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101456234A (en) | Method for producing high coherence degree EPS big plate | |
| CN102717031B (en) | Large-scale thin-wall valve body lost foam casting process | |
| CN106238673B (en) | A kind of forming method of the low-density EPS apperance for lost foam casting | |
| CN103372630B (en) | A kind of evaporative pattern production technology of engine cylinder-body | |
| CN105835292B (en) | A kind of expansion ratio is high, the microporous foam Shooting Technique of the still trace in surface | |
| CN114888237B (en) | Preparation method of vanishing model shell and application of vanishing model shell in model casting | |
| CN105835299A (en) | Microcellular foaming injection molding technology capable of realizing high surface glossiness and high bubble density as well as mold | |
| CN104190868A (en) | Lost foam casting process | |
| CN105562600A (en) | White mold production process of evanescent mode | |
| US3378885A (en) | Apparatus for forming thin wall cellular plastic containers | |
| CN110698714A (en) | Heat preservation foaming system based on heat preservation refrigerator | |
| CN110976758B (en) | Lost foam full mold casting process | |
| CN101759867B (en) | Method for pressurizing and ageing expanded bead for lost mold | |
| CN104118087A (en) | Production process and equipment of high-efficiency energy-saving foam plastic | |
| CN209063397U (en) | A kind of die sinking foaming mould | |
| CN107116177A (en) | A kind of white mould foaming forming technique method of evaporative pattern | |
| CN110270676A (en) | A kind of alusil alloy casting technique | |
| CN105904705A (en) | Blow molding process for automobile expansion tank | |
| CN109177025A (en) | It is opened foaming mould and die sinking frothing injection method | |
| CN112936706A (en) | Lost foam plate production process using STMMA material | |
| CN106077482A (en) | A kind of casting method of multi-cylinder diesel engine cylinder body | |
| CN101486074A (en) | Disappearance core production method | |
| US2420815A (en) | Process of producing expanded rubber material | |
| WO2022041933A1 (en) | Preparation method for double-hardness molded foamed sole, and foamed sole thereof | |
| CN113680965A (en) | Preparation method of full mold casting lost foam plate material mixed with STMMA beads and EPS beads |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Yuanchao Inventor before: Xu Yuanchao |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090617 |