CN110039001A - A kind of method and structure casting the anti-air inlet of upper core box gas vent - Google Patents

A kind of method and structure casting the anti-air inlet of upper core box gas vent Download PDF

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Publication number
CN110039001A
CN110039001A CN201910460992.9A CN201910460992A CN110039001A CN 110039001 A CN110039001 A CN 110039001A CN 201910460992 A CN201910460992 A CN 201910460992A CN 110039001 A CN110039001 A CN 110039001A
Authority
CN
China
Prior art keywords
gas vent
core box
venting plug
gasket
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910460992.9A
Other languages
Chinese (zh)
Inventor
张学念
刘健
马武彬
蓝振成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yuchai Machinery Co Ltd
Original Assignee
Guangxi Yuchai Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangxi Yuchai Machinery Co Ltd filed Critical Guangxi Yuchai Machinery Co Ltd
Priority to CN201910460992.9A priority Critical patent/CN110039001A/en
Publication of CN110039001A publication Critical patent/CN110039001A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06Core boxes
    • B22C7/062Sealing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06Core boxes
    • B22C7/065Venting means

Abstract

The invention discloses a kind of methods for casting the anti-air inlet of upper core box gas vent, belong to casting cold box die technical field, solve the problems, such as upper core box exhaust gas inlet hole and influence sand core quality.This method is a upper venting plug to be added at the top of each gas vent, and a movable gasket is arranged between gas vent and upper venting plug;When penetrating sand, the type chamber gas in core box die cavity is discharged by gas vent, and gasket is blown afloat, and type chamber gas is passed through from the outer peripheral gap of gasket, and is discharged by upper venting plug, realizes exhaust;When blowing triethylamine solidification sand core, entire air blowing shield covers the upper die face of upper core box, and gasket fits closely with gas vent top surface under the pressure for blowing triethylamine curing agent, gas vent is blocked, and realization prevents air inlet.The invention also discloses a kind of structures of anti-air inlet of casting upper core box gas vent for realizing the above method.The present invention effectively prevent gas to enter in core box die cavity while meeting smooth in exhaust, improves sand core quality.

Description

A kind of method and structure casting the anti-air inlet of upper core box gas vent
Technical field
The present invention relates to casting cold box die technical fields, more specifically, it relates to which a kind of casting upper core box is vented The method and structure of the anti-air inlet in hole.
Background technique
As shown in Figure 1, in the cold box die of foundry enterprise, the gas vent 2 of upper core box 1 can not only be vented but also can air inlet, When penetrating sand, the gas in core box die cavity 3 is discharged upwards from gas vent 2, but is entirely to blow when blowing triethylamine solidification sand core Gas hood covers the upper die face of upper core box 1, and triethylamine curing agent also can enter core box type from gas vent 2 in addition to entering from sand-spraying hole Chamber 3.The lower venting plug 4 for 1 bottom of upper core box that flowing and heat due to triethylamine can make is heated faster than core box die cavity 3, simultaneously Heated time is long, will cause contact lower 4 position of venting plug core sand solidification it is too fast, and leads to the problem of and is layered and scab, when penetrating When core, because of 4 scab of lower venting plug, then the exhaust of gas vent 2 will affect, lead to that sand core part misrun is imperfect, sand core has circle The problem of recess, casting protrudes fleshiness, influence sand core quality.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the prior art above-mentioned deficiency, the purpose of the present invention one there is provided A method of the casting anti-air inlet of upper core box gas vent effectively prevent gas to enter core box type while meeting smooth in exhaust It is intracavitary.
The purpose of the present invention two, can using the structure there is provided a kind of structure for casting the anti-air inlet of upper core box gas vent It prevents gas from entering in core box die cavity, effectively improves sand core quality.
To achieve the goals above one, the present invention provides a kind of method for casting the anti-air inlet of upper core box gas vent, this method It is a upper venting plug to be added at the top of each gas vent, and setting one is movable close between gas vent and upper venting plug Packing;When penetrating sand, the type chamber gas in core box die cavity is discharged by gas vent, gasket is blown afloat, type chamber gas is outside gasket The gap at edge passes through, and is discharged by upper venting plug, realizes exhaust, and after type chamber gas disappears, gasket is fallen after rise gas vent It covers;When blowing triethylamine solidification sand core, entire air blowing shield covers the upper die face of upper core box, and gasket is blowing triethylamine curing agent Pressure under, fitted closely with gas vent top surface, gas vent blocked, realization prevent air inlet.
To achieve the goals above two, the present invention provides a kind of structure for casting the anti-air inlet of upper core box gas vent, including upper Core box, core box die cavity, gas vent and lower venting plug, the upper core box interpolation above the gas vent is equipped with venting plug, described Upper venting plug and gas vent between be equipped with and can slide up and down gasket, the diameter of the gasket is greater than the straight of gas vent Diameter.
As a further improvement, the upper venting plug bottom is equipped with accommodating chamber, the venting plug is movably arranged on In accommodating chamber.
Further, it is all provided in the upper core box in the upper core box above the gas vent, between gas vent and core box die cavity There is inserting groove, grafting is mounted in corresponding inserting groove respectively for the upper venting plug, lower venting plug.
Further, the upper venting plug, lower venting plug are interference fitted and are plugged in inserting groove.
Further, the gasket bottom center is equipped with multiple helicla flutes, and the outer edge of the helicla flute and exhaust The inner wall in hole is corresponding, and the depth of the helicla flute is gradually reduced along the outer edge of gasket.
Further, it is embedded with iron block in the gasket bottom, correspondingly, the upper core of gas vent top outer rim Magnet is embedded in box.
Further, the upper venting plug, gasket, lower venting plug and gas vent are coaxially arranged.
Further, the gasket is rubber pad.
Beneficial effect
Compared with prior art, the present invention having the advantage that are as follows:
1, the present invention can be jacked up realization exhaust, in air inlet, sealing in exhaust by the way that movable gasket is arranged Pad blocks gas vent, and realization prevents air inlet, while meeting smooth in exhaust, gas effectively prevent to enter in core box die cavity.
2, the present invention can switch during exhaust and air inlet by the way that upper venting plug and gasket is arranged, realize gas Body one-way flow, effectively slows down the heated time of lower venting plug, to prevent lower venting plug scab, improves sand core quality.
3, helicla flute is arranged by gasket bottom surface in the present invention, and is further limited by the depth and width to helicla flute It is fixed, facilitate gasket and blow afloat upwards, it is ensured that smooth in exhaust.
4, the present invention on gasket by being arranged iron block and the outer rim setting magnet at the top of gas vent, it can be ensured that sealing It pads accurate return and blocks gas vent.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art;
Fig. 2 is structural schematic diagram of the invention;
Fig. 3 is that gasket looks up structure enlargement diagram in the present invention.
Wherein: venting plug, the upper venting plug of 5-, 6- gasket, 7- hold under 1- upper core box, 2- gas vent, 3- core box die cavity, 4- Receive chamber, 8- helicla flute, 9- iron block, 10- magnet.
Specific embodiment
The present invention is described further for specific embodiment in reference to the accompanying drawing.
Refering to Fig. 2-3, a kind of method of anti-air inlet of casting upper core box gas vent of the invention, this method is in each exhaust A upper venting plug 5 is added at the top of hole 2, and a movable gasket 6 is set between gas vent 2 and upper venting plug 5;? When penetrating sand, type chamber gas in core box die cavity 3 is discharged by gas vent 2, and gasket 6 is blown afloat, and type chamber gas is from 6 outer edge of gasket Gap pass through, and by upper venting plug 5 be discharged, realize exhaust, when type chamber gas disappear after, gasket 6 falling gas vent 2 is covered Firmly;When blowing triethylamine solidification sand core, entire air blowing shield covers the upper die face of upper core box 1, and gasket 6 is blowing triethylamine curing agent Pressure under, fitted closely with 2 top surface of gas vent, gas vent 2 blocked, realization prevent air inlet.The present invention passes through setting activity Gasket 6, realization exhaust can be jacked up in exhaust, in air inlet, gasket 6 can block gas vent 2 again, and realization is prevented Only air inlet effectively prevent gas to enter in core box die cavity while meeting smooth in exhaust.
A kind of structure of anti-air inlet of casting upper core box gas vent of the invention, including upper core box 1, core box die cavity 3, gas vent 2 and lower venting plug 4, wherein core box die cavity 3 is located at 1 bottom of upper core box, and gas vent 2 passes through lower venting plug 4 and connects with core box die cavity 3 Logical, 1 interpolation of upper core box gas vent 2 above is equipped with upper venting plug 5, between upper venting plug 5 and gas vent 2 equipped with can on The gasket 6 of lower slider, and the diameter of gasket 6 is greater than the diameter of gas vent 2, it is ensured that and gasket 6 can cover gas vent 2 It firmly realizes and blocks.The present invention can switch during exhaust and air inlet by the way that upper venting plug and gasket is arranged, realize gas Body one-way flow, effectively slows down the heated time of lower venting plug, to prevent lower venting plug scab, improves sand core quality.
Specifically, being equipped with accommodating chamber 7 in upper 5 bottom of venting plug, venting plug 5 is movably arranged in accommodating chamber 7, upper venting plug 5 one side play the role of outlet when exhaust, after gasket 6 is blown afloat, are played to gasket 6 when exhaust The effect of limit prevents gasket 6 from flying out.In upper core box 1 above gas vent 2, between gas vent 2 and core box die cavity 3 Inserting groove is equipped in upper core box 1, wherein upper venting plug 5, grafting is mounted in corresponding inserting groove lower venting plug 4 respectively, just In the installation of venting plug, avoids prominent 1 upper and lower end face of upper core box of venting plug and influence sand core molding.Also, upper venting plug 5, under Venting plug 4 is interference fitted and is plugged in inserting groove, to prevent venting plug from falling off.
Preferably, multiple helicla flutes 8 are equipped in 6 bottom center of gasket, helicla flute 8 is dissipated to 6 outer edge spiral of gasket Hair, and the outer edge of the helicla flute 8 is corresponding with the inner wall of gas vent 2, to prevent gas leakage, the depth and width of the helicla flute 8 are equal Outer edge along gasket 6 is gradually reduced, convenient for exhaust, when penetrating sand, and while the air-blowing of type chamber is jacked up to gasket 6, Type chamber gas can be forced gasket 6 to rotate, be facilitated gasket 6 and blown afloat upwards by the outside helical flow of helicla flute 8, it is ensured that Smooth in exhaust.
Further, it is embedded with iron block 9 in 6 bottom of gasket, correspondingly, in the upper core box 1 of 2 top outer rim of gas vent It is inside embedded with magnet 10, magnet 10 is weak magnetic, and its magnetic adsorptive power should be less than type chamber gas to the pressure of gasket 6, really Guarantor's type chamber gas can jack up gasket 6, and after penetrating sand, gasket 6 cooperates next time in the absorption of magnet 10 and iron block 9 Position, it can be ensured that the accurate return of gasket and gas vent is blocked.
Upper venting plug 5, gasket 6, lower venting plug 4 and gas vent 2 in the present embodiment is coaxially arranged, keeps type chamber gas positive Gasket is impacted, the balance that gasket 6 rises is improved, helps to be vented.Its gasket 6 is rubber pad, improves gasket 6 Leakproofness.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, is not taking off Under the premise of from structure of the invention, several modifications and improvements can also be made, these all will not influence the effect that the present invention is implemented And patent practicability.

Claims (9)

1. a kind of method for casting the anti-air inlet of upper core box gas vent, it is characterised in that: this method is at the top of each gas vent (2) One upper venting plug (5) are added, and a movable gasket (6) is set between gas vent (2) and upper venting plug (5);
When penetrating sand, type chamber gas in core box die cavity (3) is discharged by gas vent (2), and gasket (6) is blown afloat, type chamber gas from Gasket (6) outer peripheral gap passes through, and is discharged by upper venting plug (5), realizes exhaust, after type chamber gas disappears, sealing Pad (6), which is fallen after rise, covers gas vent (2);
When blowing triethylamine solidification sand core, entire air blowing shield covers the upper die face of upper core box (1), and gasket (6) is blowing triethylamine It under the pressure of curing agent, is fitted closely with gas vent (2) top surface, gas vent (2) is blocked, realization prevents air inlet.
2. realizing a kind of structure of anti-air inlet of casting upper core box gas vent of claim 1, including upper core box (1), core box die cavity (3), gas vent (2) and lower venting plug (4), it is characterised in that: upper core box (1) interpolation above the gas vent (2) is equipped with Upper venting plug (5), being equipped between the upper venting plug (5) and gas vent (2) can slide up and down gasket (6), described close The diameter of packing (6) is greater than the diameter of gas vent (2).
3. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 2, it is characterised in that: described is upper Venting plug (5) bottom is equipped with accommodating chamber (7), and the venting plug (5) is movably arranged in accommodating chamber (7).
4. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 2, it is characterised in that: the exhaust It is equipped with inserting groove in upper core box (1) in upper core box (1) above hole (2), between gas vent (2) and core box die cavity (3), institute Grafting is mounted in corresponding inserting groove upper venting plug (5), the lower venting plug (4) stated respectively.
5. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 4, it is characterised in that: described is upper Venting plug (5), lower venting plug (4) are interference fitted and are plugged in inserting groove.
6. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 2, it is characterised in that: described is close Packing (6) bottom center is equipped with multiple helicla flutes (8), and the outer edge of the helicla flute (8) is opposite with the inner wall of gas vent (2) It answers, outer edge of the depth and width of the helicla flute (8) along gasket (6) is gradually reduced.
7. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 6, it is characterised in that: described is close Iron block (9) are embedded in packing (6) bottom, correspondingly, being embedded with magnetic in the upper core box (1) of outer rim at the top of the gas vent (2) Iron (10).
8. a kind of structure of the anti-air inlet of casting upper core box gas vent, feature according to any one of claim 2-7 Be: the upper venting plug (5), gasket (6), lower venting plug (4) and gas vent (2) are coaxially arranged.
9. a kind of structure for casting the anti-air inlet of upper core box gas vent according to claim 8, it is characterised in that: described is close Packing (6) is rubber pad.
CN201910460992.9A 2019-05-30 2019-05-30 A kind of method and structure casting the anti-air inlet of upper core box gas vent Pending CN110039001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910460992.9A CN110039001A (en) 2019-05-30 2019-05-30 A kind of method and structure casting the anti-air inlet of upper core box gas vent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910460992.9A CN110039001A (en) 2019-05-30 2019-05-30 A kind of method and structure casting the anti-air inlet of upper core box gas vent

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113996754A (en) * 2021-10-22 2022-02-01 共享装备股份有限公司 Casting sand mold and application thereof

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CN207900142U (en) * 2018-03-02 2018-09-25 昆山市昌坚铸造有限公司 The mandril exhaust structure of casting molds core box
CN109622884A (en) * 2019-02-20 2019-04-16 苏州明志科技有限公司 A kind of exhaust structure for core box
CN208764400U (en) * 2018-09-30 2019-04-19 石巍 A kind of safety valve for pressure pipeline
CN210023664U (en) * 2019-05-30 2020-02-07 广西玉柴机器股份有限公司 Structure that core box exhaust hole prevents admitting air on casting

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* Cited by examiner, † Cited by third party
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GB567149A (en) * 1943-11-23 1945-01-30 Darwins Ltd Improvements in or relating to sand-cores or moulds for use in foundries
JPH02211935A (en) * 1988-12-06 1990-08-23 Asahi Tec Corp Metallic mold for molding in cold box method
CN2124357U (en) * 1992-05-12 1992-12-09 周德威 Check valve with release function
DE4410163C1 (en) * 1994-03-24 1995-08-10 G H Zimmermann Gmbh Appts. for production of gas-hardened mould element
JPH0957765A (en) * 1995-08-23 1997-03-04 Bridgestone Corp Automatic opening of gas venting hole and device for automatic opening
JP2003112233A (en) * 2001-10-02 2003-04-15 Mitsubishi Motors Corp Vent plug and metallic mold for molding mold
JP2009255155A (en) * 2008-04-21 2009-11-05 Toyota Motor Corp Die structure for molding core and method for positioning vent plug
CN102476170A (en) * 2010-11-27 2012-05-30 大连远景铸造有限公司 Composite vent needle for sand cores
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CN208764400U (en) * 2018-09-30 2019-04-19 石巍 A kind of safety valve for pressure pipeline
CN109622884A (en) * 2019-02-20 2019-04-16 苏州明志科技有限公司 A kind of exhaust structure for core box
CN210023664U (en) * 2019-05-30 2020-02-07 广西玉柴机器股份有限公司 Structure that core box exhaust hole prevents admitting air on casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113996754A (en) * 2021-10-22 2022-02-01 共享装备股份有限公司 Casting sand mold and application thereof
CN113996754B (en) * 2021-10-22 2023-07-28 共享装备股份有限公司 Sand mould for casting and application thereof

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