CN201751050U - Cast forming lower die of gate valve cover - Google Patents
Cast forming lower die of gate valve cover Download PDFInfo
- Publication number
- CN201751050U CN201751050U CN2010201665527U CN201020166552U CN201751050U CN 201751050 U CN201751050 U CN 201751050U CN 2010201665527 U CN2010201665527 U CN 2010201665527U CN 201020166552 U CN201020166552 U CN 201020166552U CN 201751050 U CN201751050 U CN 201751050U
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- CN
- China
- Prior art keywords
- sand
- valve cover
- main part
- valve gap
- lower die
- 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 cast forming lower die of a gate valve cover. The cast forming lower die comprises a sand box and green sand, and is characterized by also comprising a valve cover dry sand mold die, wherein the valve cover dry sand die is placed in the green sand of the sand box; the valve cover dry sand die comprises an appearance main part, one large sand core and six small sand cores; the appearance main part is provided with an annular pouring runner; and the center of the appearance main part is provided with the large sand core, and the upper side end surface of the appearance main part are symmetrically provided with the six small sand cores. The cast forming lower die solves the problems that the dimension accuracy of castings is poor and a bolt hole is not available during production of gate valve cover castings by use of green sand mold dry sand cores in the prior art. The utility model provides a coated sand cast dry sand mold, and the valve cover cast, formed and produced with the sand mold used as the lower die is high in dimension accuracy, smooth and attractive in surface, ensures the accuracy of the bolt hole and improves the production efficiency.
Description
Technical field
The utility model relates to the sand casting built-up pattern, particularly relates to a kind of casting counterdie of gate valve valve gap.
Background technology
At present, green-sand is to use the most widely, the formative method of most convenient, account for 60～70% of all sand mold use amounts greatly, in gate valve valve gap castings production is to adopt the casting of greensand mold dry sand core mostly, but this method is not suitable for very big or very abundant castings production, and the rigidity of casting mold is not high, and the dimensional accuracy of foundry goods is relatively poor, and foundry goods is easy to produce defectives such as sand washing, burning into sand, pore.The casting finished products of making does not so simultaneously have bolt hole, these bolts hole need be got out, surface roughness poor (the difficult processing of valve cover surfaces curved surface) is not attractive in appearance.
The utility model content
Gate valve valve gap foundry goods adopts the production of greensand mold dry sand core in the prior art in order to solve, the dimensional accuracy of foundry goods is relatively poor, the problem that does not have bolt hole, a kind of precoated sand casting dry sand mold is provided, use this sand mold valve gap that cast form is produced as counterdie, the dimensional accuracy height, any surface finish is attractive in appearance, and the precision of bolt hole is guaranteed, has improved production efficiency.
In order to achieve the above object, the technical scheme that the utility model adopted is:
A kind of casting counterdie of gate valve valve gap, comprise sandbox and green-sand, it is characterized in that: also comprise valve gap dry sand mold mould, valve gap dry sand mold mould is positioned in the green-sand of sandbox, described valve gap dry sand mold mould comprises profile main part, a big core, six little cores, described profile main part is provided with ring gate, is provided with big core in profile main part center, is provided with six little cores at the upside end face of profile main part.
The casting counterdie of aforesaid a kind of gate valve valve gap is characterized in that: described valve gap dry sand mold mould is once made with the core shooter hot box.
The casting counterdie of aforesaid a kind of gate valve valve gap is characterized in that: described valve gap dry sand mold mould material is No. 45 steel.
The beneficial effects of the utility model are: it is an integral body that the cast form mould of the utility model valve gap adopts sand mold and core, once make with the core shooter hot box, not only improve mould strength and gas permeability, reduce the gas forming amount of sand mold and core, can also improve the surface quality of foundry goods and reduce casting defect.The finished product that casts out like this, not only precision is guaranteed, profile is bright and clean attractive in appearance, has exempted outside the boring manufacturing procedure, has also improved production efficiency.
Description of drawings
Fig. 1 is the front view of the utility model dry sand core;
Fig. 2 is the vertical view of the utility model dry sand core.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described
As illustrated in fig. 1 and 2, a kind of casting counterdie of gate valve valve gap, comprise sandbox, green-sand and valve gap dry sand mold mould, valve gap dry sand mold mould is positioned in the green-sand of sandbox, described valve gap dry sand mold mould comprises the big core of profile main part 4,2, six little cores 3, described profile main part is provided with ring gate 1, is provided with big core 2 in profile main part 4 centers, is provided with six little cores in the upside of profile main part 4 in the face of title.Described valve gap dry sand mold mould is once made with the core shooter hot box, and its material is No. 45 steel, and the gate valve valve gap of producing directly has six bolts hole, need not to hole manufacturing procedure again, has improved production efficiency.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the casting counterdie of a gate valve valve gap, comprise sandbox and green-sand, it is characterized in that: also comprise valve gap dry sand mold mould, valve gap dry sand mold mould is positioned in the green-sand of sandbox, described valve gap dry sand mold mould comprises profile main part, a big core, six little cores, described profile main part is provided with ring gate, is provided with big core in profile main part center, is provided with six little cores in the upside of profile main part in the face of title.
2. the casting counterdie of a kind of gate valve valve gap according to claim 1 is characterized in that: described valve gap dry sand mold mould is once made with the core shooter hot box.
3. according to the casting counterdie of the described a kind of gate valve valve gap of claim 2, it is characterized in that: described valve gap dry sand mold mould material is No. 45 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201665527U CN201751050U (en) | 2010-04-20 | 2010-04-20 | Cast forming lower die of gate valve cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201665527U CN201751050U (en) | 2010-04-20 | 2010-04-20 | Cast forming lower die of gate valve cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751050U true CN201751050U (en) | 2011-02-23 |
Family
ID=43601454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201665527U Expired - Fee Related CN201751050U (en) | 2010-04-20 | 2010-04-20 | Cast forming lower die of gate valve cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784881A (en) * | 2012-08-24 | 2012-11-21 | 洛阳刘氏模具有限公司 | Lost-foam mold for gate valve bodies |
| CN104226918A (en) * | 2014-09-30 | 2014-12-24 | 成都市翻鑫家科技有限公司 | Valve sand casting mold |
-
2010
- 2010-04-20 CN CN2010201665527U patent/CN201751050U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784881A (en) * | 2012-08-24 | 2012-11-21 | 洛阳刘氏模具有限公司 | Lost-foam mold for gate valve bodies |
| CN102784881B (en) * | 2012-08-24 | 2014-05-07 | 洛阳刘氏模具有限公司 | Lost-foam mold for gate valve bodies |
| CN104226918A (en) * | 2014-09-30 | 2014-12-24 | 成都市翻鑫家科技有限公司 | Valve sand casting mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20130420 |