CN101992270A - Exhaust device of casting mould - Google Patents
Exhaust device of casting mould Download PDFInfo
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- CN101992270A CN101992270A CN 200910070176 CN200910070176A CN101992270A CN 101992270 A CN101992270 A CN 101992270A CN 200910070176 CN200910070176 CN 200910070176 CN 200910070176 A CN200910070176 A CN 200910070176A CN 101992270 A CN101992270 A CN 101992270A
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- spring
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Abstract
The invention relates to an exhaust device of a casting mould, which comprises an air needle which is internally provided with a through hole; a top rod is installed in the through hole; a spring is installed on the bottom of the top rod; and a threaded rod is installed under the spring. Since the exhaust device is internally provided with the spring, in a shaping process, when an upper pressure head and a lower pressure head of a shaping machine are simultaneously pressed to a template, the air needle of the spring is compressed within effective spring compression; when the pressure heads are returned, the air needle of the spring is automatically bounced up; and the bounced air needle is higher than an upper sand mold by 10mm so as to introduce an air path to a sand top surface; in a high-temperature casting process of a casting, a large quantity of gas is generated in a sand core and a cavity and is successfully discharged into atmosphere; an air hole defect and a rejection rate of the casting are reduced; and the production efficiency is enhanced.
Description
Technical field
The present invention relates to casting die, relate in particular to a kind of exhaust apparatus of casting die.Belong to the machine casting field.
Background technology
At present, in the wet type casting wasted product, the ratio that pore accounts for is very big, and in the liquid metal solidification process, the bubble of invading in the metal forms hole in foundry goods.Because at tide mould sand, contain moisture in the molding sand, and moisture is one of main root that produces at pore.In addition, in die cavity, the gas that moisture and resin produce in the core also is the main cause that produces gas, if the die cavity exhaust is bad, the core exhaust is not smooth, and sand mold compactability is high excessively, the gas row who produces in the process in cast does not go out, and will invade in the foundry goods, forms pore.Therefore, exhaust apparatus all is installed on the rising head of casting die.
In producing turbine case foundry goods modeling process, template is a concrete mould of implementing the turbine case casting dimension.
Consult Figure 1 and Figure 2, existing template 2 is provided with rising head 5, and rising head 5 is important component parts of template, and its effect is the foundry goods to complex-shaped and wall unevenness, in abundant heart portion---be that feeding is carried out at the position that the thermal center place very easily produces shrinkage cavity or shrinkage porosite, to reduce shrinkage cavity defect.In addition, because rising head 5 is arranged on the highest point of template 2, therefore, accumulates in iron liquid easily and solidify later stage escaping gas from iron liquid.So the air tube 6 that by screw rod 12 some is installed at the top of rising head 5 is as exhaust apparatus, so that allow gas get rid of from the saturating sand mold in air tube 6 tops.
Existing turbine case casting die exhaust apparatus comprises: air tube 6, air tube 6 bottoms are equipped with a screw rod 12.
In process of production, at first, template 2 is installed on the moulding machine.Moulding machine is when moulding, template 5 moves in cope 3 and the drag box 1, seaming chuck 4, push-down head 7 move to template 5 simultaneously, finish penetrate sand after, at this moment moulding machine seaming chuck 4, push-down head 7 are depressed template 5 simultaneously, after the compacting, how much moisture influences in the sand because be subjected to, make down the height of sand mold that the variation of 20 millimeter be arranged, therefore, air tube 6 tops are the 10-30 millimeter to the distance of seaming chuck 4 and push-down head 7, that is: air tube 6 does not push up sand mold fully, gas can not be got rid of fully, and foundry goods still produces a large amount of pores.In order to address the above problem, adopt the artificial saturating method of pricking sometimes, so that allow gas get rid of smoothly, but, can increase operative employee's labour intensity so greatly, reduce production efficiency.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that existing exhaust apparatus exists, and provide a kind of exhaust apparatus of improved casting die, it is provided with a spring in exhaust apparatus, in modeling process, make moulding machine seaming chuck and the push-down head while when the template compacting, the spring air tube is effectively compressing in the amount of spring compression, and the spring air tube ejects automatically when pressure head returns, and the air tube that ejects exceeds goes up sand mold, so gas circuit is guided to the sand end face; Make foundry goods in the high temperature casting process, produce a large amount of gas in core and the die cavity and be discharged to smoothly in the atmosphere, reduce bleb defective and percent defective, improved production efficiency.
The objective of the invention is to realize by following technical scheme.
A kind of exhaust apparatus of casting die comprises air tube, it is characterized in that: the inside of air tube is provided with a through hole, and the inside of this through hole is equipped with a push rod, and the bottom of this push rod is equipped with a spring, a screw rod is installed below this spring.
The upper end of described air tube is provided with a cannelure, and an elastic seal ring is installed in this groove.
One plug is installed between described spring and the screw rod.
Described through hole is a stairstepping.
Described push rod is the T font.
Beneficial effect of the present invention: the present invention is owing to adopt such scheme, one spring is set in exhaust apparatus, in modeling process, make moulding machine seaming chuck and push-down head simultaneously when the template compacting, the spring air tube is effectively compressing in the amount of spring compression, and when pressure head returned, the spring air tube ejected automatically, and the air tube that ejects exceeds last sand mold and reaches 10 millimeters, so gas circuit is guided to the sand end face; Make foundry goods in the high temperature casting process, produce a large amount of gas in core and the die cavity and be discharged to smoothly in the atmosphere, reduce bleb defective and percent defective, improved production efficiency.
Description of drawings:
Fig. 1 is an existing mold overall structure schematic perspective view.
Fig. 2 is existing air tube structural representation.
Fig. 3 is a spring air tube user mode schematic diagram of the present invention.
Fig. 4 is a spring air tube structural representation of the present invention.
Fig. 5 is a spring air tube user mode schematic diagram of the present invention.
Major label description in figure:
1 drag box, 2 templates, 3 copes, 4 seaming chucks, 5 rising heads, 6 air tubes, 7 push-down heads, 8 springs, 9 push rods, 10 sealing rings, 11 plugs, 12 screw rods.
The specific embodiment
Consult Fig. 3-shown in Figure 5, the present invention includes: air tube 6, the inside of air tube 6 is provided with the single order trapezoidal hole, the inside of through hole adopts mode movingly that one T font push rod 9 is installed, the bottom of push rod 9 is equipped with a spring 8, the following employing thread connecting mode of spring 8 is equipped with a screw rod 12, adopts thread connecting mode that one plug 11 is installed between spring 8 and the screw rod 12.
The upper end of air tube 6 is provided with a cannelure, and an elastic seal ring 10 is installed in the groove.Sealing ring 10 adopts rubber seal.
Operation principle of the present invention: in modeling process, make moulding machine seaming chuck 4 and push-down head 7 simultaneously when template 2 compactings, spring air tube 6 is effectively compressing in the amount of spring compression, when pressure head returns, the spring air tube ejects automatically, and the air tube that ejects exceeds last sand mold and reaches 10 millimeters, so gas circuit is guided to the sand mold end face; Make foundry goods in the high temperature casting process, produce a large amount of gas in core and the die cavity and be discharged to smoothly in the atmosphere, reduce bleb defective and percent defective, improved production efficiency.
Spring is a prior art.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. the exhaust apparatus of a casting die comprises air tube, it is characterized in that: the inside of air tube is provided with a through hole, and the inside of this through hole is equipped with a push rod, and the bottom of this push rod is equipped with a spring, a screw rod is installed below this spring.
2. the exhaust apparatus of casting die according to claim 1, it is characterized in that: the upper end of described air tube is provided with a cannelure, and an elastic seal ring is installed in this groove.
3. the exhaust apparatus of casting die according to claim 1 is characterized in that: a plug is installed between described spring and the screw rod.
4. the exhaust apparatus of casting die according to claim 1, it is characterized in that: described through hole is a stairstepping.
5. the exhaust apparatus of casting die according to claim 1, it is characterized in that: described push rod is the T font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910070176 CN101992270B (en) | 2009-08-21 | 2009-08-21 | Exhaust device of casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910070176 CN101992270B (en) | 2009-08-21 | 2009-08-21 | Exhaust device of casting mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101992270A true CN101992270A (en) | 2011-03-30 |
| CN101992270B CN101992270B (en) | 2013-10-02 |
Family
ID=43783293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910070176 Active CN101992270B (en) | 2009-08-21 | 2009-08-21 | Exhaust device of casting mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101992270B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328032A (en) * | 2011-10-08 | 2012-01-25 | 青岛双星铸造机械有限公司 | Novel venting device for molding machine |
| CN107560744A (en) * | 2017-09-26 | 2018-01-09 | 无锡英罗唯森科技有限公司 | Thermometer bushing device |
| CN108057846A (en) * | 2017-12-12 | 2018-05-22 | 重庆乐迪机车车辆配件有限公司 | A kind of high-energy riser sleeve structure |
| CN113843398A (en) * | 2021-08-25 | 2021-12-28 | 东风汽车股份有限公司 | Spring ejector pin applied to exhaust hole of mold sand core |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626706Y (en) * | 2003-06-20 | 2004-07-21 | 顺德市顺达电脑厂有限公司 | Air exhausting device |
| CN2628825Y (en) * | 2003-07-29 | 2004-07-28 | 马文超 | Single-way inflating needle |
| CN201455186U (en) * | 2009-08-21 | 2010-05-12 | 天津新伟祥工业有限公司 | Exhaust device of cast mould |
-
2009
- 2009-08-21 CN CN 200910070176 patent/CN101992270B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328032A (en) * | 2011-10-08 | 2012-01-25 | 青岛双星铸造机械有限公司 | Novel venting device for molding machine |
| CN107560744A (en) * | 2017-09-26 | 2018-01-09 | 无锡英罗唯森科技有限公司 | Thermometer bushing device |
| CN108057846A (en) * | 2017-12-12 | 2018-05-22 | 重庆乐迪机车车辆配件有限公司 | A kind of high-energy riser sleeve structure |
| CN113843398A (en) * | 2021-08-25 | 2021-12-28 | 东风汽车股份有限公司 | Spring ejector pin applied to exhaust hole of mold sand core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101992270B (en) | 2013-10-02 |
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