CN212191115U - Die for eliminating shrinkage porosity of outlet hole on top cover of sewage pump - Google Patents
Die for eliminating shrinkage porosity of outlet hole on top cover of sewage pump Download PDFInfo
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- CN212191115U CN212191115U CN202020563021.5U CN202020563021U CN212191115U CN 212191115 U CN212191115 U CN 212191115U CN 202020563021 U CN202020563021 U CN 202020563021U CN 212191115 U CN212191115 U CN 212191115U
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Abstract
The utility model provides an eliminate mould of sewage pump top cap wire hole shrinkage porosity, including last molding box, lower molding box, template, top cap mould, go up molding box molding sand, lower molding box molding sand, loam core head. A template is arranged between the upper molding box and the lower molding box, the top cover mold is arranged in the upper molding box, a concave wire outlet hole is formed in the top of the top cover mold, and the core print is arranged in the wire outlet hole. The upper molding box molding sand and the lower molding box molding sand are filled into the upper molding box and the lower molding box respectively during molding, and are simultaneously contacted with the outer surface and the inner cavity of the top cover mold. The utility model discloses convenient lower core, the drawing of patterns is easy, utilizes the loam core head to put into top cap mould's outlet port before the molding, forms false mould, then fills into the molding box molding sand, makes the loam core head dissolve as an organic wholely with last molding box molding sand, and the drawing of patterns time takes out to the cavity all edge wall that makes top cap mould form is even, and top cap blank wall thickness is even after pouring molten iron like this, does not have the shrinkage porosity phenomenon, and the cavity and the theoretical center coincidence of outlet port department do not let the sword during processing blank.
Description
Technical Field
The utility model relates to a casting field, concretely relates to eliminate mould of sewage pump top cap wire hole shrinkage porosity.
Background
The sewage pump top cover casting is generally provided with an outlet through hole for leading out a cable, the leakage is not generated when the water pump works after the assembly is required, the hole is formed by processing, the wall thickness of a blank before the processing is much thicker than that of other parts, the blank belongs to a common hot spot part in the casting, the shrinkage and loosening phenomenon is easily generated at the position after the processing, the tissue of the casting is not compact, the air leakage is generated when the air tightness experiment is performed in a key-making process, and the workpiece is scrapped.
At present, the common method is to adopt a sand core to be placed in the middle of a wire outlet hole, so that the wall thickness of the formed blank is consistent with that of the periphery wall thickness, and a hot spot position is eliminated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of above-mentioned prior art, provide a location accurate, the drawing of patterns is convenient, and the wall thickness is even behind the blank shaping, eliminates the mould of shrinkage porosity.
The utility model adopts the technical proposal that:
a mold for eliminating shrinkage porosity of a wire outlet hole on a top cover of a sewage pump comprises an upper molding box, a lower molding box, a molding plate, a top cover mold, upper molding box molding sand, lower molding box molding sand and a mud core head. A template is arranged between the upper molding box and the lower molding box, the top cover mold is arranged in the upper molding box, a concave wire outlet hole is formed in the top of the top cover mold, and the core print is arranged in the wire outlet hole. Go up the molding sand of molding box, the molding sand of moulding box is filled respectively when moulding in last molding box, the molding box down, simultaneously with top cap mould's surface and inner chamber contact, wait to form the cavity after the top cap mould takes out, wait to become the top cap blank after the molten iron pouring.
Further preferably, the cope, the drag, the profile and the cap mold are assembled into a whole before molding.
Further preferably, the cope and the drag are matched with the positioning pin holes of the template through pins.
The utility model has the advantages that: the utility model discloses convenient lower core, the drawing of patterns is easy, utilizes the loam core head to put into top cap mould's outlet port before the molding, forms false mould, then fills into the molding box molding sand, makes the loam core head dissolve as an organic wholely with last molding box molding sand, and the drawing of patterns time takes out to the cavity all edge wall that makes top cap mould form is even, and top cap blank wall thickness is even after pouring molten iron like this, does not have the shrinkage porosity phenomenon, and the cavity and the theoretical center coincidence of outlet port department do not let the sword during processing blank.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Illustration of the drawings: 1-upper molding box, 2-lower molding box, 3-template, 4-top cover mold, 5-upper molding box molding sand, 6-lower molding box molding sand and 7-loam core head.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A mould for eliminating shrinkage porosity of a wire outlet hole on a top cover of a sewage pump comprises an upper moulding box 1, a lower moulding box 2, a mould plate 3, a top cover mould 4, upper moulding box moulding sand 5, lower moulding box moulding sand 6 and a core print 7. A template 3 is arranged between the upper molding box 1 and the lower molding box 2, a top cover mold 4 is arranged in the upper molding box 1, a concave wire outlet hole is formed in the top of the top cover mold 4, and a sand core head 7 is arranged in the wire outlet hole. Go up molding sand 5, lower molding sand 6 and be filled respectively when moulding in last molding box 1, lower molding box 2, simultaneously with top cap mould 4's surface and inner chamber contact, wait to form the cavity after top cap mould 4 takes out, wait to the shaping of molten iron pouring back for the top cap blank.
The upper molding box 1, the lower molding box 2, the template 3 and the top cover mold 4 are assembled into a whole before molding.
The upper molding box 1 and the lower molding box 5 are matched with the positioning pin holes of the template 3 through pins.
The utility model discloses a theory of operation: utilize the loam core head 7 to put into the outlet wire hole of top cap mould 4 before the molding, form false mould, then fill into cope flask molding sand 5, make loam core head 7 and cope flask molding sand 5 dissolve as an organic wholely, the tape-out during the drawing of patterns, thereby make the cavity all peripheral wall that top cap mould 4 formed even, top cap blank wall thickness is even after pouring molten iron like this, there is not the shrinkage porosity phenomenon, the cavity and the coincidence of theoretical center of outlet wire hole department, do not let the sword during processing blank, can solve the problem that proposes among the above-mentioned background art, concrete exposition is as follows:
1. and assembling the upper molding box 1, the lower molding box 2, the template 3 and the top cover mold 4.
2. Cope 1 is facing downward and drag 2 is facing upward.
3. The cope flask 2 is filled with cope molding sand 6 and tightened.
4. The upper molding box 1, the lower molding box 2, the template 3 and the top cover mold 4 are turned over, the lower molding box 2 faces downwards, and the upper molding box 1 faces upwards.
5. And putting the loam core print 7 into the wire outlet hole of the top cover mould 4.
6. The cope 1 is filled with cope molding sand 5 and tightened. At this time, the core print 7 and the cope molding sand 5 are integrated.
7. And (4) knocking the periphery of the template 3 by a wooden hammer so as to facilitate stripping.
8. The cope 1, cope molding sand 5, and core print 7 are stripped upward together.
9. The integrally connected pattern plate 3 and the top cover mold 4 are lifted up and taken out of the drag 2 and drag molding sand 6.
10. And finally, placing the upper molding box 1, the upper molding box molding sand 5 and the core print 7 on the lower molding box 2 and the lower molding box molding sand 6, wherein the positioning pin of the upper molding box 1 is matched with the positioning hole of the lower molding box 2. And the top cover mold 4 is taken out to form a cavity, and the top cover blank is formed after molten iron is poured.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. A mould for eliminating shrinkage porosity of a wire outlet hole on a top cover of a sewage pump is characterized by comprising an upper molding box, a lower molding box, a template, a top cover mould, upper molding box molding sand, lower molding box molding sand and a mud core head; a template is arranged between the upper molding box and the lower molding box, the top cover mold is arranged in the upper molding box, a concave wire outlet hole is formed in the top of the top cover mold, and the loam core head is arranged in the wire outlet hole; the upper molding box molding sand and the lower molding box molding sand are filled into the upper molding box and the lower molding box respectively during molding, and are simultaneously contacted with the outer surface and the inner cavity of the top cover mold.
2. The mold of claim 1, wherein the cope, drag, form, and head molds are assembled together prior to molding.
3. The mold of claim 1, wherein the cope and the drag are engaged with the locating pin holes of the form by pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563021.5U CN212191115U (en) | 2020-04-15 | 2020-04-15 | Die for eliminating shrinkage porosity of outlet hole on top cover of sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563021.5U CN212191115U (en) | 2020-04-15 | 2020-04-15 | Die for eliminating shrinkage porosity of outlet hole on top cover of sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212191115U true CN212191115U (en) | 2020-12-22 |
Family
ID=73833717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020563021.5U Active CN212191115U (en) | 2020-04-15 | 2020-04-15 | Die for eliminating shrinkage porosity of outlet hole on top cover of sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212191115U (en) |
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2020
- 2020-04-15 CN CN202020563021.5U patent/CN212191115U/en active Active
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