CN204413098U - A kind of vacuum die-casting mould hermetically-sealed construction - Google Patents
A kind of vacuum die-casting mould hermetically-sealed construction Download PDFInfo
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- CN204413098U CN204413098U CN201420871445.2U CN201420871445U CN204413098U CN 204413098 U CN204413098 U CN 204413098U CN 201420871445 U CN201420871445 U CN 201420871445U CN 204413098 U CN204413098 U CN 204413098U
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- die insert
- push rod
- moving die
- sealing
- casting mould
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Abstract
The utility model discloses a kind of vacuum die-casting mould hermetically-sealed construction, comprise dynamic model cage plate, moving die insert, cover half cage plate and fixed die insert, mold cavity is formed between described moving die insert and fixed die insert, the push rod reciprocally moved up and down is provided with in described moving die insert, gap is left between described push rod and moving die insert, the sealing shroud in order to plugging gap is socketed with outside described push rod, on contact surface between described sealing shroud and moving die insert, interval is provided with at least two sealing rings successively, this vacuum die-casting mould hermetically-sealed construction by being socketed with sealing shroud outside push rod, effectively prevent the clearance leakage of ambient atmos through push rod place from entering in mold cavity, meanwhile, the contact surface between sealing shroud and moving die insert also arranges multi-sealed circle, improve the sealing at push rod clearance place further, effectively ensure that the vacuum in mold cavity.
Description
Technical field
the utility model relates to vacuum die-casting mould technical field of sealing technology, particularly a kind of vacuum die-casting mould hermetically-sealed construction.
Background technology
in evacuated die-casting process production process, die casting, after closing and before being filled with molten metal bath, carries out vacuum exhaust in mold cavity, reduces volume gas and the die casting gas content of injection mo(u)lding and pressure maintaining period, thus reduces gas hole defect, lifting casting quality.But, the defect of existing vacuum die-casting mould ubiquity mold cavity sealing effectiveness difference, gas is obviously there is to mold cavity internal leakage when mold cavity vacuum significantly improves, the key place of vacuum die-casting mould sealing is the sealing of mold cavity die joint and the sealing between dynamic model and push rod, move because push rod needs to do periodic reverse in the push-rod hole of dynamic model, in order to avoid push rod is stuck, must leave minim gap between push rod and push-rod hole, this minim gap becomes the position that vacuum die-casting mould the most easily leaks gas under high vacuum state.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of vacuum die-casting mould hermetically-sealed construction that effectively can improve mould sealing property.
For solving the problems of the technologies described above adopted technical scheme: a kind of vacuum die-casting mould hermetically-sealed construction, comprise dynamic model cage plate, moving die insert, cover half cage plate and fixed die insert, mold cavity is formed between described moving die insert and fixed die insert, the push rod reciprocally moved up and down is provided with in described moving die insert, gap is left between described push rod and moving die insert, be socketed with the sealing shroud in order to plugging gap outside described push rod, on the contact surface between described sealing shroud and moving die insert, interval is provided with at least two sealing rings successively.
Further, described sealing shroud is PEEK plastic sealing cover.
Further, between described fixed die insert and moving die insert, periphery has inclined ramp, and the engagement edge place between described fixed die insert and moving die insert is provided with sealing joint strip.
Beneficial effect: this vacuum die-casting mould hermetically-sealed construction, by being socketed with sealing shroud outside push rod, effectively prevents the clearance leakage of ambient atmos through push rod place from entering in mold cavity; Meanwhile, the contact surface between sealing shroud and moving die insert also arranges multi-sealed circle, improve the sealing at push rod clearance place further, effectively ensure that the vacuum in mold cavity.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further;
Fig. 1 is the sectional view of the utility model embodiment;
Fig. 2 is the close-up schematic view at A place in Fig. 1;
Fig. 3 is the structural representation of fixed die insert in the utility model embodiment.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, a kind of vacuum die-casting mould hermetically-sealed construction of the utility model, comprise dynamic model cage plate 1, moving die insert 2, cover half cage plate 3 and fixed die insert 4, mold cavity 5 is formed between moving die insert 2 and fixed die insert 4, the push rod 6 reciprocally moved up and down is provided with in moving die insert 2, leave gap between push rod 6 and moving die insert 2, be socketed with the sealing shroud 7 in order to plugging gap outside push rod 6, on the contact surface between sealing shroud 7 and moving die insert 2, interval is provided with at least two sealing rings 8 successively.
In the present embodiment, the shrinkage pool laying sealing shroud 7 is provided with in moving die insert 2 bottom end, this shrinkage pool is concentric with push-rod hole, and diameter is larger than the diameter of push-rod hole, when dynamic model cage plate 1 is fixedly connected with moving die insert 2, sealing shroud 7 is fixed in this shrinkage pool, sealing cover 7 adopts PEEK plastic sealing cover, sealing shroud 7 and push rod 6 are interference fits, by arranging sealing shroud 7 at gap location, effectively prevent the clearance leakage of ambient atmos through push rod place from entering in mold cavity 5.In order to improve sealing property further, the contact surface between sealing shroud 7 and moving die insert 2 also arranges dual-seal circle 8.
As preferably, the peripheral abutment surface between fixed die insert 4 and moving die insert 2 is inclined ramp 9 engaged with one another, is provided with sealing joint strip 10 at the peripheral edge place of moving die insert 2.Sealing joint strip 10 surrounds mold cavity, reduces gas and enters from die joint gap, improve sealing; Meanwhile, owing to there is inclined ramp 9 between fixed die insert 4 and moving die insert 2, when occurring that mold cavity 5 run out of by molten metal, this inclined ramp 9 can shutoff molten metal, avoids molten metal to be directly washed into the sealing joint strip 10 of peripheral disposition, and then corrosion sealing joint strip.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (3)
1. a vacuum die-casting mould hermetically-sealed construction, it is characterized in that: comprise dynamic model cage plate, moving die insert, cover half cage plate and fixed die insert, mold cavity is formed between described moving die insert and fixed die insert, the push rod reciprocally moved up and down is provided with in described moving die insert, gap is left between described push rod and moving die insert, be socketed with the sealing shroud in order to plugging gap outside described push rod, on the contact surface between described sealing shroud and moving die insert, interval is provided with at least two sealing rings successively.
2. vacuum die-casting mould hermetically-sealed construction according to claim 1, is characterized in that: described sealing shroud is PEEK plastic sealing cover.
3. vacuum die-casting mould hermetically-sealed construction according to claim 1, is characterized in that: the peripheral abutment surface between described fixed die insert and moving die insert is inclined ramp engaged with one another, is provided with sealing joint strip at the peripheral edge place of described moving die insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871445.2U CN204413098U (en) | 2014-12-31 | 2014-12-31 | A kind of vacuum die-casting mould hermetically-sealed construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871445.2U CN204413098U (en) | 2014-12-31 | 2014-12-31 | A kind of vacuum die-casting mould hermetically-sealed construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204413098U true CN204413098U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420871445.2U Active CN204413098U (en) | 2014-12-31 | 2014-12-31 | A kind of vacuum die-casting mould hermetically-sealed construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN204413098U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694845A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院金属研究所 | High-vacuum mold for alloy die-casting formation |
| CN108687326A (en) * | 2018-08-23 | 2018-10-23 | 襄阳美利信科技有限责任公司 | A kind of dynamic model oblique core drawing mechanism |
-
2014
- 2014-12-31 CN CN201420871445.2U patent/CN204413098U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694845A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院金属研究所 | High-vacuum mold for alloy die-casting formation |
| CN108687326A (en) * | 2018-08-23 | 2018-10-23 | 襄阳美利信科技有限责任公司 | A kind of dynamic model oblique core drawing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |