CN211708052U - Segmented core taking mold for precoated sand full-twisted blade impeller blade mold - Google Patents
Segmented core taking mold for precoated sand full-twisted blade impeller blade mold Download PDFInfo
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- CN211708052U CN211708052U CN201922250101.5U CN201922250101U CN211708052U CN 211708052 U CN211708052 U CN 211708052U CN 201922250101 U CN201922250101 U CN 201922250101U CN 211708052 U CN211708052 U CN 211708052U
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Abstract
A precoated sand full-distortion blade impeller blade mold subsection molding sand core mold is structurally characterized in that an upper mold heating hole for installing a heating rod is formed in an upper mold, and a sand shooting opening communicated with an inner cavity of the upper mold is formed in the top of the upper mold; the lower die is internally provided with a lower die heating hole for installing a heating rod, bottom holes with the same twisted shape as the impeller blade die are uniformly distributed at the bottom in the cavity of the lower die, and the segmented blade die A and the segmented blade die B are in clearance fit with the bottom hole of the lower die and are positioned in the cavity of the lower die; and ejector rods connected with the cylinder are respectively fixed at the lower parts of the sectional blade die A and the sectional blade die B. The sectional core-taking sand core die is characterized in that a blade die of a twisted blade with a narrow and long shape is vertically divided into a sectional blade A and a sectional blade B, so that each section moves up and down through a mandril under the action of respective cylinders to complete downward die drawing and upward return; compared with the traditional integral shape taking of the impeller blade die, the method has the advantages of time and labor saving when the impeller blade die is taken out, high precision, high yield, high product pump efficiency and the like.
Description
Technical Field
The utility model relates to a water pump impeller makes technical field, especially a type psammitolite mould is got in segmentation of tectorial membrane sand full distortion blade impeller blade mould.
Background
The impeller as the core component of the pump plays a very important role in the overall performance of the pump. The impeller is composed of a front cover plate, a rear cover plate, a hub and blades, the blades of the impeller are complex space twisting bodies, and the water pump impeller is generally formed by casting through sand cores. At present, a sand core of a coated sand used for a casting mold of an impeller is of an integrated structure. When the mold-covered sand core is produced, a processed integral impeller blade mold is required to be arranged in a mold, the impeller blade mold is in a narrow and long twisted shape and is integral, the impeller blade mold can be taken out only by swinging the impeller blade mold left and right when the mold-covered sand core is drawn, and part of molding sand falls off when the impeller blade mold is swung, so that a cavity of the impeller blade formed by the mold-covered sand core and the impeller blade mold have large errors, the actual size and shape of the impeller blade cast out have large errors with the original design size and shape, the precision of the impeller blade is low, the yield is low, and the efficiency of a water pump is reduced; the blade wheel blade mould is time-consuming and labor-consuming to take out, and the casting rejection rate is high.
Disclosure of Invention
In order to solve the not enough of prior art, the utility model aims at providing a tectorial membrane sand full distortion blade impeller blade mould segmentation type psammitolite mould gets, compares with the whole type of getting of traditional impeller blade mould that the cover mould sand psammitolite that obtains has characteristics such as precision height, yield height, product pump efficiency height.
Realize the utility model discloses a technical scheme that the purpose adopted is: a precoated sand full-distortion blade impeller blade mold subsection molding sand core mold comprises an upper mold, a sand shooting port, a heating hole, a lower mold, a subsection blade mold A, a subsection blade mold B and an ejector rod; the upper die is internally provided with an upper die heating hole for installing a heating rod, and the top of the upper die is provided with a sand shooting port communicated with an inner cavity of the upper die; the lower die is internally provided with a lower die heating hole for installing a heating rod, bottom holes with the same twisted shape as the impeller blade die are uniformly distributed at the bottom in the cavity of the lower die, and the segmented blade die A and the segmented blade die B are in clearance fit with the bottom hole of the lower die and are positioned in the cavity of the lower die; and ejector rods connected with the cylinder are respectively fixed at the lower parts of the sectional blade die A and the sectional blade die B.
The upper die is a movable die, and the lower die is a fixed die. When the mold-coated sand core is produced, firstly, a mold is heated, when the temperature of the mold meets the process requirement, the mold is closed, and the mold is heated and cured after the coated sand is injected into the mold from a sand injection port. And when the curing time meets the process requirement, opening the mold, moving the upper mold upwards, respectively pulling out the segmented blade A and the segmented blade B in the lower mold downwards through the ejector rods under the action of respective cylinders, automatically separating the segmented blade A and the segmented blade B from the lower mold, taking out the sand core of the mold covering, respectively pushing the segmented blade A and the segmented blade B back to the original position of the lower mold, and finishing one sand core making action.
The utility model has the advantages that: the sectional core-taking sand core die is characterized in that a blade die of a twisted blade with a narrow and long shape is vertically divided into a sectional blade A and a sectional blade B, so that each section moves up and down through a mandril under the action of respective cylinders to complete downward die drawing and upward return; compared with the traditional integral shape taking of the impeller blade die, the method has the advantages of time and labor saving when the impeller blade die is taken out, high precision, high yield, high product pump efficiency and the like.
Drawings
Fig. 1 is the utility model relates to a tectorial membrane sand full distortion blade impeller blade mould segmentation structure chart after getting type psammitolite mould compound die.
Figure 2 is the utility model relates to a top view of type psammitolite mould lower mould is got in tectorial membrane sand full distortion blade impeller blade mould segmentation.
Figure 3 is the utility model relates to a section of a sand core mould is got to tectorial membrane sand full distortion blade impeller blade mould.
Detailed Description
In the attached drawings, the utility model relates to a precoated sand full-distortion blade impeller blade mould subsection molding sand core mould, which comprises an upper mould, a sand shooting port, a heating hole, a lower mould, a subsection blade mould A, a subsection blade mould B and a mandril; the upper die 1 is internally provided with an upper die heating hole 4 for installing a heating rod, and the top of the upper die 1 is provided with a sand shooting port 3 communicated with an inner cavity of the upper die; a lower die heating hole 5 for installing a heating rod is arranged in the lower die 2, bottom holes 9 (see a sectional view of figure 3) which are consistent with the twisted shape of the impeller blade die are uniformly distributed at the bottom in the cavity of the lower die 2, and a segmented blade die A6 and a segmented blade die B7 are in clearance fit with the bottom holes of the lower die and are positioned in the cavity of the lower die 2 (see a top view 2 of the lower die); and the lower parts of each sectional blade die A6 and B7 are respectively fixed with a mandril 8 connected with a cylinder. And heating rods are respectively arranged in the heating holes 4 and the heating holes 5 and are connected with a heating device.
Claims (1)
1. A precoated sand full-distortion blade impeller blade mold subsection molding sand core mold comprises an upper mold, a sand shooting port, a heating hole, a lower mold, a subsection blade mold A, a subsection blade mold B and an ejector rod; the upper die (1) is internally provided with an upper die heating hole (4) for installing a heating rod, and the top of the upper die (1) is provided with a sand shooting port (3) communicated with the inner cavity of the upper die; a lower die heating hole (5) for installing a heating rod is arranged in the lower die (2); the method is characterized in that: bottom holes (9) with the same shape as the impeller blade mold in a twisted shape are uniformly distributed at the bottom in the cavity of the lower mold (2), and the segmented blade mold A (6) and the segmented blade mold B (7) are in clearance fit with the bottom holes (9) of the lower mold and are positioned in the cavity of the lower mold (2); and ejector rods (8) connected with the cylinder are respectively fixed at the lower parts of the sectional blade die A (6) and the sectional blade die B (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922250101.5U CN211708052U (en) | 2019-12-06 | 2019-12-06 | Segmented core taking mold for precoated sand full-twisted blade impeller blade mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922250101.5U CN211708052U (en) | 2019-12-06 | 2019-12-06 | Segmented core taking mold for precoated sand full-twisted blade impeller blade mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211708052U true CN211708052U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922250101.5U Active CN211708052U (en) | 2019-12-06 | 2019-12-06 | Segmented core taking mold for precoated sand full-twisted blade impeller blade mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN211708052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799049A (en) * | 2022-03-30 | 2022-07-29 | 西安航天发动机有限公司 | Processing die and method of sand core for variable cross-section blade casting of aerospace liquid engine |
-
2019
- 2019-12-06 CN CN201922250101.5U patent/CN211708052U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799049A (en) * | 2022-03-30 | 2022-07-29 | 西安航天发动机有限公司 | Processing die and method of sand core for variable cross-section blade casting of aerospace liquid engine |
| CN114799049B (en) * | 2022-03-30 | 2024-02-09 | 西安航天发动机有限公司 | Processing die and method for sand core for variable-section blade casting of aerospace liquid engine |
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