CN103317091A - Special-purpose film-coating sand shell for manufacturing motor cover in mobile machinery - Google Patents
Special-purpose film-coating sand shell for manufacturing motor cover in mobile machinery Download PDFInfo
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- CN103317091A CN103317091A CN2013100692262A CN201310069226A CN103317091A CN 103317091 A CN103317091 A CN 103317091A CN 2013100692262 A CN2013100692262 A CN 2013100692262A CN 201310069226 A CN201310069226 A CN 201310069226A CN 103317091 A CN103317091 A CN 103317091A
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- motor cover
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Abstract
A special-purpose film-coating sand shell for manufacturing a motor cover in mobile machinery is disclosed by the invention, and is mainly constituted by mold clamping of an upper mold and a lower mold; wherein the upper mold has a structure simulating the motor cover face structure, and is provided with a casting head in the center; and the lower mold has a structure simulating the motor cover bottom structure, and is provided with a window in a large area at the bottom, and a cold iron block is pasted at the window. The upper mold and the lower mold of the film-coating sand shell have structures opposite to the conventional upper mold and lower mold, and the upper mold is provided with the casting head, the structure of the shell is exactly usable in moulding production line because of the structure of the motor cover, and thereby the practicality of the shell is improved; and by providing the cold iron block on the lower mold, a casting can be rapidly cooling after molten iron is casted into the cavity, and therefore sand hole rate of the casting is reduced, quality is improved, and the phenomenon of oil leakage in a casting usage process is avoided.
Description
Technical field
---------overlay film arenaceous shell that the present invention relates to a kind of preparation instrument of iron castings.Specifically a kind of for fixing loam core, mould the precoated sand shell of foundry goods outline.
Background technology
The technique of sand mold iron castings is just popular from B.C. Han dynasty in China, and even to this day, cast member has been improved to by traditional extensive foundry goods has meticulous runner, and casting quality can effectively cooperate the requirement of automation control foundry goods.In the process of whole reform, technical mainly is that the composite of precoated sand researched and developed, and on the shape and structure of precoated sand shell, generally all is the imitative type structure of foundry goods outline of the full precoated sand material of employing.The shortcoming of this structure is: because the precoated sand shell is that what to form behind the matched moulds is the cavity of a sealing, and molten iron is liquid injection the under the high temperature, therefore, its precoated sand cavity preferably heat insulating ability can increase cool time of molten iron, so that foundry goods in forming process in order to sand holes to occur, cause the use oil impregnate.
The existing precoated sand shell mechanism that is exclusively used in motor cover is: patrix is the imitative type of the substructure of motor cover, and counterdie is the imitative type of motor cover superstructure.Dead head is located on the patrix.The shell of this structure has the feature that volume is large, dead head is large, bad counterdie on existing moulding production line, poor practicability.
Summary of the invention
Main task of the present invention is to provide a kind of special-purpose precoated sand shell of making walking machine Ma Fagai, specifically a kind of precoated sand shell that can effectively guarantee casting quality, reduce Shrinkage Porosity.
In order to solve above technical problem, a kind of special-purpose precoated sand shell of making the walking machine motor cover of the present invention, mainly consisted of by the upper die and lower die matched moulds, it is characterized in that: described patrix is the structure of imitative motor cover face structure, patrix is provided with dead head, and the position of described dead head is located at the center of patrix; Described counterdie is the structure of imitative motor cover polycrystalline substance, and large tracts of land has window on the counterdie bottom surface, and frozen iron blocks is posted at the place at described window.
Further, the window of described counterdie is one or more.
The invention has the advantages that: the upper die and lower die of described precoated sand shell are opposite with original upper and lower mould cavity, and establish dead head at patrix, because the structure of motor cover so that this structure just in time is suitable for the use of moulding streamline, improves the practicality of shell; Be provided with frozen iron blocks at counterdie, its effect is to pour into a mould behind die cavity at molten iron, cools off fast foundry goods, in order to reduce the sand holes rate of foundry goods, improves quality, avoids occurring in the foundry goods use procedure phenomenon of leakage of oil.
Description of drawings
Fig. 1 is upper die structure schematic diagram of the present invention.
Fig. 2 is the front schematic view of counterdie of the present invention.
Fig. 3 is the rear view of counterdie of the present invention.
Fig. 4 is the state diagram of the present invention on mo(u)lding line.
The specific embodiment
As shown in Figure 1, described patrix 1 is the structure of imitative motor cover face structure, and the center of patrix 1 has and emits oral pore 2, the described oral pore 2 that emits.Routinely, near emitting the oral pore side face to establish gate orifice 7, described emit oral pore 2 peripheries to be provided with to give vent to anger pin hole 8 several.
As shown in Figure 2, described counterdie 4 is the structure of imitative motor cover polycrystalline substance, and large tracts of land has window 5 on counterdie 4 bottom surfaces, and window 5 is random geometry, and number is one or more.The present embodiment is the window of 2 rectangles.Frozen iron blocks 6 is posted at 5 places at described window, as shown in Figure 3.
During use, as shown in Figure 4, with patrix 1 and counterdie 4 matched moulds, then place in the mo(u)lding line 9, cover moulding cover plate 10, then establish sprue channel 11 at the cover plate plate face at gate orifice 7 places, be communicated with gate orifice 7; Establish rising head 3 at the cover plate plate face that emits oral pore 2 places, be communicated with emitting oral pore 2, the cover plate plate face at pin hole 8 places of giving vent to anger sets out air tube 12, is inserted in the pin hole 8 of giving vent to anger by the plate face.Then routinely technique pouring molten iron, cooling forming.
Claims (2)
1. special-purpose precoated sand shell of making the walking machine motor cover, mainly consisted of by the upper die and lower die matched moulds, it is characterized in that: described patrix is the structure of imitative motor cover face structure, and patrix is provided with dead head, and the position of described dead head is located at the center of patrix; Described counterdie is the structure of imitative motor cover polycrystalline substance, and large tracts of land has window on the counterdie bottom surface, and frozen iron blocks is posted at the place at described window.
2. a kind of special-purpose precoated sand shell of making the walking machine motor cover according to claim 1, it is characterized in that: the window of described counterdie is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100692262A CN103317091A (en) | 2013-03-05 | 2013-03-05 | Special-purpose film-coating sand shell for manufacturing motor cover in mobile machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100692262A CN103317091A (en) | 2013-03-05 | 2013-03-05 | Special-purpose film-coating sand shell for manufacturing motor cover in mobile machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103317091A true CN103317091A (en) | 2013-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100692262A Pending CN103317091A (en) | 2013-03-05 | 2013-03-05 | Special-purpose film-coating sand shell for manufacturing motor cover in mobile machinery |
Country Status (1)
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| CN (1) | CN103317091A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392901A (en) * | 2011-06-27 | 2012-03-28 | 芜湖市金贸流体科技股份有限公司 | Novel gate valve and fabrication process thereof |
| CN102672112A (en) * | 2012-04-28 | 2012-09-19 | 浙江坤博机械制造有限公司 | Casting method of motor casing |
| CN102941333A (en) * | 2012-10-12 | 2013-02-27 | 南阳市汇森精密仪器铸造有限公司 | Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method |
| CN203155952U (en) * | 2013-03-05 | 2013-08-28 | 南通华东油压科技有限公司 | Special precoated sand outer housing for manufacturing walking machinery motor cover |
-
2013
- 2013-03-05 CN CN2013100692262A patent/CN103317091A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392901A (en) * | 2011-06-27 | 2012-03-28 | 芜湖市金贸流体科技股份有限公司 | Novel gate valve and fabrication process thereof |
| CN102672112A (en) * | 2012-04-28 | 2012-09-19 | 浙江坤博机械制造有限公司 | Casting method of motor casing |
| CN102941333A (en) * | 2012-10-12 | 2013-02-27 | 南阳市汇森精密仪器铸造有限公司 | Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method |
| CN203155952U (en) * | 2013-03-05 | 2013-08-28 | 南通华东油压科技有限公司 | Special precoated sand outer housing for manufacturing walking machinery motor cover |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130925 |
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| RJ01 | Rejection of invention patent application after publication |