CN203900398U - Spiral rotor sand mould - Google Patents
Spiral rotor sand mould Download PDFInfo
- Publication number
- CN203900398U CN203900398U CN201420365293.9U CN201420365293U CN203900398U CN 203900398 U CN203900398 U CN 203900398U CN 201420365293 U CN201420365293 U CN 201420365293U CN 203900398 U CN203900398 U CN 203900398U
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- China
- Prior art keywords
- helical
- rotor
- sand
- spiral
- sand mould
- Prior art date
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- Withdrawn - After Issue
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Abstract
The utility model discloses a spiral rotor sand mould, which relates to the field of casting and solves the technical problem that a spiral rotor processed by using an existing spiral rotor sand mould is easily rejected due to the defects of fine sand holes and the like. A through hole is formed in the spiral rotor sand mould, a plurality of spiral grooves corresponding to a spiral rotor are formed in the inner wall of the through hole, the sand mould is divided into an upper sand mould and a lower sand mould through a parting surface, the clearance between the spiral rotor and the inner wall of each spiral groove is 3.5-4.5mm, and the spiral angle of the spiral grooves is 37-38 degrees.
Description
[technical field]
The utility model relates to casting field.
[background technology]
Casting process injects the shape that molten iron forms feature in sand mold, die cavity in helical rotor sand mold is corresponding with the shape of helical rotor, because helical rotor structure is complicated and exist with dead angle, during coated sand shooting moulding there is the hidden danger of local strength's deficiency in die cavity, there is the floating sand of part in mold cavity surface, when molten iron is poured into a mould, easily form mechanical sand washing, thereby at cast(ing) surface, form the defects such as fine sand hole.If fine sand hole phenomenon is serious in helical rotor finished product, directly cause Mechanical processing of casting to scrap.
[summary of the invention]
The technical problem that the utility model solves is to provide a kind of helical rotor sand mold, improves the quality of helical rotor finished product.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of helical rotor sand mold, in described sand mold, be provided with through hole, the inwall of described through hole is provided with some helical grooves corresponding with helical rotor, described sand mold is divided into upper sand mold and lower sand mold by die joint, gap between described helical rotor and helical groove inwall is 3.5mm～4.5mm, and the helical angle of described helical groove is 37 degree～38 degree.
Further, the gap between described helical rotor and helical groove inwall is 4mm, and described helical angle is 37.5 degree.
Further, the inwall along described helical groove is provided with sand catcher.
The beneficial effects of the utility model:
Helical rotor sand mold of the present utility model, reasonably select gap size reserved between helical rotor and helical groove inwall and the helical angle of helical groove, avoiding processing the residual foundry goods that causes in fine sand hole on rear foundry goods scraps, because original increase is compared in reserved gap, within effectively fine sand hole being controlled to foundry goods smear metal scope, thus the surface quality of assurance foundry goods.And on the inwall of helical groove, sand catcher is set, can improves well the upper i of free sand, can be effectively by the sand centralized Control of dissociating.
These features of the present utility model and advantage will be below the specific embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is front view of the present utility model;
Fig. 2 is the structural representation of helical rotor.
[specific embodiment]
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the technical scheme of the utility model embodiment, but following embodiment is only preferred embodiment of the present utility model, not all.Embodiment based in embodiment, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection domain of the present utility model.
With reference to figure 1 and Fig. 2, shown in a kind of helical rotor sand mold, in sand mold 1, be provided with through hole, the inwall of through hole is provided with some helical grooves corresponding with helical rotor 11, sand mold 1 is divided into upper sand mold and lower sand mold by die joint, gap between helical rotor 2 and helical groove 11 inwalls is 3.5mm～4.5mm, and the helical angle 4 of helical groove is 37 degree～38 degree.Gap in prior art between helical rotor and helical groove inwall is generally less, helical rotor needs after forming fine sand hole, and helical rotor is carried out to smear metal, but while needing the part of smear metal excessive, helical rotor will be scrapped, therefore this programme test of many times, increases the gap between helical rotor and helical groove, can greatly reduce scrappage, and when the gap between helical rotor and helical groove changes, helical angle also increases, and sand mold internal intensity increases, and is difficult for producing sand washing.
Preferably, the gap between helical rotor 2 and helical groove 11 inwalls is 4mm.Helical angle is 37.5 degree.Under this gap, the quality of finished product is high, and helical rotor needs the degree of depth of smear metal little.
And the inwall along helical groove 11 is provided with sand catcher 12.Can effectively the sand that dissociates be concentrated in sand catcher 12, form the projection 21 of corresponding sand catcher on moulding helical rotor 2, free sand is gathered in this projection mostly, therefore by this projection of smear metal just can, can reduce and in main body, form fine sand hole.
By above-described embodiment, the purpose of this utility model is by fully effective having reached.The personage who is familiar with this technology should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in the specific embodiment above.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (3)
1. a helical rotor sand mold, in described sand mold, be provided with through hole, the inwall of described through hole is provided with some helical grooves corresponding with helical rotor, described sand mold is divided into upper sand mold and lower sand mold by die joint, it is characterized in that: the gap between described helical rotor and helical groove inwall is 3.5mm～4.5mm, the helical angle of described helical groove is 37 degree～38 degree.
2. a kind of helical rotor sand mold according to claim 1, is characterized in that: the gap between described helical rotor and helical groove inwall is 4mm, and described helical angle is 37.5 degree.
3. a kind of helical rotor sand mold according to claim 1 and 2, is characterized in that: the inwall along described helical groove is provided with sand catcher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365293.9U CN203900398U (en) | 2014-07-03 | 2014-07-03 | Spiral rotor sand mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365293.9U CN203900398U (en) | 2014-07-03 | 2014-07-03 | Spiral rotor sand mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203900398U true CN203900398U (en) | 2014-10-29 |
Family
ID=51774689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420365293.9U Withdrawn - After Issue CN203900398U (en) | 2014-07-03 | 2014-07-03 | Spiral rotor sand mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203900398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096806A (en) * | 2014-07-03 | 2014-10-15 | 浙江汉声精密机械有限公司 | Spiral rotor sand mold |
| CN106734892A (en) * | 2016-11-28 | 2017-05-31 | 中船重工西安东仪科工集团有限公司 | A kind of equidistant inducer of three leaves spiral casts the simple method for preparing of stripping pattern mould |
-
2014
- 2014-07-03 CN CN201420365293.9U patent/CN203900398U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096806A (en) * | 2014-07-03 | 2014-10-15 | 浙江汉声精密机械有限公司 | Spiral rotor sand mold |
| CN104096806B (en) * | 2014-07-03 | 2016-08-24 | 浙江汉声精密机械有限公司 | A kind of helical rotor sand mold |
| CN106734892A (en) * | 2016-11-28 | 2017-05-31 | 中船重工西安东仪科工集团有限公司 | A kind of equidistant inducer of three leaves spiral casts the simple method for preparing of stripping pattern mould |
| CN106734892B (en) * | 2016-11-28 | 2018-12-25 | 中船重工西安东仪科工集团有限公司 | A kind of simple preparation method of the equidistant inducer casting stripping pattern mold of three leaves spiral |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |