CN202291304U - Vacuum sand box for lost foam casting - Google Patents
Vacuum sand box for lost foam casting Download PDFInfo
- Publication number
- CN202291304U CN202291304U CN201120359990XU CN201120359990U CN202291304U CN 202291304 U CN202291304 U CN 202291304U CN 201120359990X U CN201120359990X U CN 201120359990XU CN 201120359990 U CN201120359990 U CN 201120359990U CN 202291304 U CN202291304 U CN 202291304U
- Authority
- CN
- China
- Prior art keywords
- pressing
- pressing plate
- sandbox
- sand box
- lost foam
- 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 vacuum sand box for lost foam casting, which is provided with a sand box body, filter screens and pressing boards. The pressing boards are of hollow frame structures, a plurality of pressing noses are fixed at a position of the sand box body corresponding to the pressing boards, the pressing boards are inserted into the pressing noses for pressing the filtering screens, and wedges are clamped between the pressing boards and the pressing noses. Compared with the prior art, the vacuum sand box for lost foam casting has the advantages of being compact in structure, convenient to overhaul and operate, low in cost and capable of being used in vacuum sand boxes for lost foam casting.
Description
Technical field
The utility model belongs to casting technology field, is specifically related to a kind of dispellable mould casting vacuum sandbox.
Background technology
The vacuum sandbox inwall aspirating hole device that lost foam casting uses is traditional approach; Concrete structure is: being drilled with diameter on the inwall is the aperture about 6mm; Getting steel plate then in addition processes with the hole of size and compresses the lattice plate boring same quantity on the co-located; Screen pack is pressed between the sandbox wall dative plate, fixes with screw on every side, a common sandbox will be used the screw of cover more than 300.There is following problem in said structure:
1, use in bubble moulding model gasification output oil smoke in addition dust be bonded in very soon on the filter screen, influence gas permeability, airtight in the time of seriously; The practical vacuum degree is very low or do not have vacuum in the sandbox, causes the foundry goods swell and scraps, and is difficult for usually coming to light; Inspection is difficulty again, can't clear up again.2, this sandbox uses a period of time, need to change screen pack, and this device dismounting is very difficult; Mainly be that peripheral screws is too many; Single air extractor just reaches more than 20, and this sandbox adds up to the screw of cover more than 300, changes once each sandbox and drops into 2 man-hours at least; Trouble again too much consuming time, influence is produced.3, not only consume material is too much to make this air extractor, mainly is to compress the lattice plate to want monoblock to use, and compresses lattice twist drill hole in addition and aims at the sandbox cinclides again, and technology is very loaded down with trivial details during making, and is consuming time too many.
The utility model content
For solving the above-mentioned defective that prior art exists, the purpose of the utility model is to provide a kind of compact conformation, and inspection operation is convenient, the dispellable mould casting vacuum sandbox that cost is low.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts: this dispellable mould casting vacuum sandbox; Have sandbox body, screen pack and pressing plate, it is characterized in that: said pressing plate is the frame structure of hollow, and corresponding pressing plate fixed-site is provided with a plurality of pressure noses on the said sandbox body; Pressing plate inserts to press in the nose pushes down screen pack, between pressing plate and pressure nose, is connected with voussoir.
Adopt the beneficial effect of technique scheme: the screen pack of this dispellable mould casting vacuum sandbox is compressed by the frame structure pressing plate of hollow, and screen pack is exposed to outside the pressing plate, and screen pack is checked through after being stained with the oil smoke dust easily, and cleaning easily.If screen pack is damaged, change convenient and time-savingly, only need voussoir is unclamped, the pressing plate taking-up is loaded onto again after the replacing soon very much, and the every cover sandbox of this process only needs half an hour, and is time saving and energy saving.This device saves and compresses lattice plate and peripheral screws, obviously saves manufacturing materials and time.So compared with prior art, have compact conformation, inspection operation is convenient, and is with low cost, can on the vacuum sandbox of various lost foam castings, use.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation.
Fig. 1 is the utility model overall structure sketch map;
Fig. 2 is the pressure plate structure sketch map.
The specific embodiment
Like Fig. 1, the dispellable mould casting vacuum sandbox shown in 2, constitute by sandbox body 1, screen pack 5, pressing plate 4, pressure nose 2 and voussoir 3, the tank wall of sandbox body 1 is provided with aspirating hole; Screen pack 5 directly overlays on the aspirating hole, is compressed by pressing plate 4, and said pressing plate 4 is the frame structure of hollow; See through pressing plate 4 and can directly see screen pack 5, corresponding pressing plate position is welded with a plurality of square pressure noses 2 on the said sandbox body, preferably presses 4～6 in nose; Pressing plate 4 inserts to press in the nose 2 pushes down screen pack 5; Between pressing plate and pressure nose, be connected with voussoir 3, voussoir 3 is pushed down screen pack 5 through pressing plate 4, and screen pack 5 is fitted on the vacuum sandbox wall closely.
Claims (1)
1. dispellable mould casting vacuum sandbox; Have sandbox body, screen pack and pressing plate; It is characterized in that: said pressing plate is the frame structure of hollow; Corresponding pressing plate fixed-site is provided with a plurality of pressure noses on the said sandbox body, and pressing plate inserts to press in the nose pushes down screen pack, between pressing plate and pressure nose, is connected with voussoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120359990XU CN202291304U (en) | 2011-09-23 | 2011-09-23 | Vacuum sand box for lost foam casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120359990XU CN202291304U (en) | 2011-09-23 | 2011-09-23 | Vacuum sand box for lost foam casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202291304U true CN202291304U (en) | 2012-07-04 |
Family
ID=46360284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120359990XU Expired - Fee Related CN202291304U (en) | 2011-09-23 | 2011-09-23 | Vacuum sand box for lost foam casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202291304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736944A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Negative-pressure evanescent mold sand box pressing plate |
| CN103736943A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Pressure plate of negative pressure lost foam sand box |
-
2011
- 2011-09-23 CN CN201120359990XU patent/CN202291304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736944A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Negative-pressure evanescent mold sand box pressing plate |
| CN103736943A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Pressure plate of negative pressure lost foam sand box |
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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 |
Granted publication date: 20120704 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |