CN108273968A - The method and structure of a kind of casting cold-box nozzle end Sand sticking-resistant - Google Patents
The method and structure of a kind of casting cold-box nozzle end Sand sticking-resistant Download PDFInfo
- Publication number
- CN108273968A CN108273968A CN201810283220.8A CN201810283220A CN108273968A CN 108273968 A CN108273968 A CN 108273968A CN 201810283220 A CN201810283220 A CN 201810283220A CN 108273968 A CN108273968 A CN 108273968A
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- Prior art keywords
- sand
- cold
- nozzle
- box
- casting
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- 239000004576 sand Substances 0.000 title claims abstract description 60
- 238000005266 casting Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 206010039509 Scab Diseases 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a kind of methods of casting cold-box nozzle end Sand sticking-resistant, it is that up-small and down-big coniform horn mouth is opened up in the lower end of nozzle, the problems such as scab of nozzle end can be prevented, sand core defect and casting is avoided to protrude fleshiness by making sand core using this method.The invention also discloses a kind of structures of casting cold-box nozzle end Sand sticking-resistant, including cold-box upper mold, cold-box lower die, cold-box cavity and nozzle, the cold-box upper mold is equipped with sand-spraying hole, the lower end inner cavity of the nozzle is equipped with the horn mouth of up-small and down-big cone shape, the lower end periphery of the nozzle is arranged with the seal rubber sleeve wrapped up, the seal rubber sleeve is adapted with the sand-spraying hole, is mounted with that the casting mould of the structure has the characteristics that be conducive to sand core pressure loophole diverging flow, extends die life, is at low cost.
Description
Technical field
The present invention relates to casting cold box die technical fields, more specifically, it relates to a kind of casting cold-box nozzle
The method and structure of end Sand sticking-resistant.
Background technology
Currently, in the cold box die of foundry enterprise, generally there are the circle wall thickness of 2mm or so, end circle in nozzle end
Cast is small to put down the problem of be easy to causeing scab, is not solved preferably all the time, disadvantage is as follows:Nozzle end circle
Facet is in direct contact with sand core, and the heated scab in production of nozzle end forms ring shape scab, in nozzle end and sand core
When separation, sand core ring shape is caused to lack sand, sand core ring shape recess, casting has the problems such as ring shape protrudes fleshiness.Common processing
Method:One, the scab of nozzle end is often cleared up in production, increased the workload of operative employee, influenced productive temp;Two,
Embedded core manually is glued with oildag, increases the workload of core finishing work;3, blank is polished flat in cleaning, still, is equally existed
There is protrusion fleshiness to influence casting of appearance of cast on casting, the bad polishing of fleshiness is protruded at some positions of blank, increases cleaning work amount, simultaneously
Also increase production cost.
Invention content
The previous method for being designed to provide a kind of casting cold-box nozzle end Sand sticking-resistant of the present invention, utilizes this method
Make the problems such as sand core can prevent the scab of nozzle end, sand core defect and casting is avoided to protrude fleshiness.
The latter purpose of the present invention is to provide a kind of structure of casting cold-box nozzle end Sand sticking-resistant, is mounted with the knot
The casting mould of structure has the characteristics that be conducive to core sand pressure loophole diverging flow, extends die life, is at low cost.
The previous technical solution of the present invention is as follows:
A method of casting cold-box nozzle end Sand sticking-resistant, is that up-small and down-big circle is opened up in the lower end of nozzle
The horn mouth of taper.
Further, a seal rubber sleeve wrapped up is added in the lower periphery of nozzle.
Further, this method comprises the following steps:
S1, before penetrating sand, nozzle is inserted into sand-spraying hole, and the inner wall of seal rubber sleeve and sand-spraying hole is fitted close to form sealing;
S2, when penetrating sand, core sand is under gas pressure power, four circumfluences of the horn mouth to cold-box cavity along nozzle lower end
Dynamic diffusion, forms sand core;
S3, when nozzle is detached with sand core, the lower end of nozzle with detached in the form of circular line contact between sand core,
Sand is penetrated in completion.
The latter technique scheme of the present invention is as follows:
A kind of structure of casting cold-box nozzle end Sand sticking-resistant, including cold-box upper mold, cold-box lower die, cold core cell type
Chamber and nozzle, the cold-box upper mold are equipped with sand-spraying hole, and the lower end inner cavity of the nozzle is equipped with up-small and down-big cone
The horn mouth of shape, the lower end periphery of the nozzle are arranged with the seal rubber sleeve wrapped up, the seal rubber sleeve with it is described
Sand-spraying hole is adapted.
Further, the cold-box cavity is described between the cold-box upper mold and the cold-box lower die
Sand-spraying hole be located in the cold-box upper mold, and the sand-spraying hole is connected with the cold-box cavity.
Further, the sand-spraying hole includes accommodating chamber and conical cavity, correspondingly, the seal rubber sleeve includes and connects
Socket part and tapered portion, between the interconnecting piece and the nozzle by buckle be closely connected, the tapered portion with
It is interference fit between the conical cavity, is clearance fit between the nozzle and the accommodating chamber.
Further, have in the nozzle and penetrate sand channel, described penetrating below sand channel is equipped with radially narrowed
Mutually it is connected at the top of transition passage, the transition passage and the horn mouth.
Further, the bell-mouthed taper is 40 °~60 °.
Further, the bell-mouthed taper is 50 °.
Further, the sand-spraying hole further includes the guiding cavity being located at the top of the cold-box upper mold.
Advantageous effect
Compared with prior art, the present invention the present invention have the advantage that for:
1, a kind of casting cold-box nozzle end provided by the invention Sand sticking-resistant method, by being opened in the lower end of nozzle
If horn mouth, to reduce the contact area of nozzle end and sand core, when nozzle being made to be detached with sand core in the form of circular line contact
Separation, not will produce scab, the abrasive band of sand core will not be walked, and sand, sand core circular ring shape recess, casting are lacked so as to avoid sand core
The problem of protruding fleshiness, improves sand core quality, and reduction repaiies heart workload, reduces labor intensity, saved production cost;
2, a kind of casting cold-box nozzle end provided by the invention Sand sticking-resistant structure, by the way that loudspeaker are arranged in nozzle lower end
Mouthful, the contact area of nozzle end and sand core can be reduced, achievees the purpose that prevent scab, and by the design of seal rubber sleeve, carry
The leakproofness of high nozzle enables the duration for penetrating sand to ensure, therefore, pacifies on casting mould to prevent mold gas leakage from running sand
After the structure for having filled the present invention, has conducive to core sand pressure loophole diverging flow, extends die life, spy at low cost
Point.
Description of the drawings
Fig. 1 is that the present invention penetrates the structural schematic diagram before sand;
Fig. 2 is the structural schematic diagram when present invention penetrates sand.
Wherein:1- nozzles, 2- horn mouths, 3- seal rubber sleeves, 4- sand-spraying holes, 5- core sands, 6- cold-boxs cavity, 7- sand cores,
8- cold-boxs upper mold, 9- cold-boxs lower die, 10- penetrate sand channel, 11- transition passages, 31- interconnecting pieces, 32- tapered portion, 41- receivings
Chamber, 42- conical cavities, 43- are oriented to cavity.
Specific implementation mode
The present invention is described further for specific embodiment in below in conjunction with the accompanying drawings, but does not constitute and appoint to the present invention
What is limited.
A kind of method of casting cold-box nozzle end Sand sticking-resistant of the present invention, is opened up in the lower end of nozzle 1
Small lower big coniform horn mouth 2, it is preferred that also add a seal rubber sleeve wrapped up in the lower periphery of nozzle 1
3.This method comprises the following steps:
S1, before penetrating sand, nozzle 1 be inserted into sand-spraying hole 4 in, the inner wall of seal rubber sleeve 3 and sand-spraying hole 4 be fitted close to be formed it is close
Envelope, prevents deflation sand leakage;
S2, when penetrating sand, core sand 5 is under gas pressure power, and the horn mouth 2 along 1 lower end of nozzle is to the four of cold-box cavity 6
Zhou Liudong is spread, and forms sand core 7;
S3, when nozzle 1 is detached with sand core 7, between the lower end and sand core 7 of nozzle 1 in the form of circular line contact
Separation, to complete to penetrate sand, achievees the purpose that prevent scab to reduce the contact area of nozzle 1 and sand core 7.
A kind of structure of casting cold-box nozzle end Sand sticking-resistant, including cold-box upper mold 8, cold-box lower die 9, cold-box
Cavity 6 and nozzle 1, wherein cold-box cavity 6, for accommodating sand core 7, is penetrated between cold-box upper mold 8 and core box lower die 9
Sand hole 4 is located in cold-box upper mold 8, and sand-spraying hole 4 is connected with cold-box cavity 6, and core sand 5 enters cold-box by nozzle 1
Sand core 7 is formed in cavity 6, sand-spraying hole 4 is equipped in cold-box upper mold 8, and up-small and down-big circle is equipped in the lower end inner cavity of nozzle 1
The horn mouth 2 of cone-shaped is arranged with the seal rubber sleeve 3 wrapped up in the lower end periphery of nozzle 1, wherein seal rubber sleeve 3 with penetrate
Sand hole 4 is adapted, the accommodating chamber 41 and the conical cavity 42 below the accommodating chamber 41 that sand-spraying hole 4 includes receiving nozzle 1, accordingly
, seal rubber sleeve 3 includes the interconnecting piece 31 being connected with nozzle 1 and and is adapted below the interconnecting piece 31 and with conical cavity 42
Tapered portion 32, between interconnecting piece 31 and nozzle 1 by buckle be closely connected, be between tapered portion 32 and conical cavity 42
Interference fit is clearance fit between nozzle 1 and accommodating chamber 41.The present invention in the lower end of nozzle 1 by opening up horn mouth
2, to reduce the contact area of nozzle end and sand core 7, detached in the form of circular line contact when nozzle 1 being made to be detached with sand core 7,
Scab is not will produce, the abrasive band of sand core 7 will not be walked, sand, sand core circular ring shape recess, casting protrusion are lacked so as to avoid sand core
The problem of fleshiness, sand core quality is improved, reduction repaiies heart workload, reduces labor intensity, saved production cost.
Preferably, have in nozzle 1 and penetrate sand channel 10, radially narrowed transition is equipped with below sand channel 10 penetrating
Channel 11, transition passage 11 are mutually connected with 2 top of horn mouth, i.e., the diameter of transition passage 11 is less than the diameter for penetrating sand channel 10,
And the diameter of transition passage 11 is adapted with the minimum diameter of horn mouth 2, is on the one hand easy for the arrangement of horn mouth 2, another party
Face can change the flow velocity of core sand 5, so that it is guaranteed that the quality of sand core 7.The taper of horn mouth 2 is 40 °~60 °, further,
The taper of its horn mouth 2 is 50 °, by the taper of reasonable Arrangement horn mouth 2, can rationally control the flow velocity of core sand 5, and advantageous
In core sand pressure loophole diverging flow, extend die life.Its sand-spraying hole 4 further includes being located at 8 top of cold-box upper mold
It is oriented to cavity 43, the diameter for being oriented to cavity 43 is more than the diameter of accommodating chamber 41, and coaxially arranged with accommodating chamber 41, convenient for nozzle
1 positioning makes in 1 quick insertion sand-spraying hole 4 of nozzle.
What has been described above is only a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,
Without departing from the structure of the invention, several modifications and improvements can also be made, these all do not interfere with implementation of the present invention
Effect and patent practicability.
Claims (10)
1. a kind of method of casting cold-box nozzle end Sand sticking-resistant, which is characterized in that opened up in the lower end of nozzle (1)
Up-small and down-big coniform horn mouth (2).
2. a kind of method of casting cold-box nozzle end Sand sticking-resistant according to claim 1, which is characterized in that in nozzle
(1) lower periphery adds a seal rubber sleeve wrapped up (3).
3. a kind of method of casting cold-box nozzle end Sand sticking-resistant according to claim 2, which is characterized in that this method
Include the following steps:
S1, before penetrating sand, nozzle (1) is inserted into sand-spraying hole (4), and seal rubber sleeve (3) and the inner wall of sand-spraying hole (4) are fitted close shape
At sealing;
S2, when penetrating sand, core sand (5) is under gas pressure power, and the horn mouth (2) along nozzle (1) lower end is to cold-box cavity (6)
Surrounding flowing diffusion, formed sand core (7);
S3, when nozzle (1) is detached with sand core (7), with circular line contact between the lower end and sand core (7) of nozzle (1)
Form detaches, and sand is penetrated in completion.
4. a kind of structure of method that realizing a kind of casting cold-box nozzle end Sand sticking-resistant described in claim 1, including it is cold
Core box upper mold (8), cold-box lower die (9), cold-box cavity (6) and nozzle (1) are it is characterized in that, the cold-box upper mold
(8) it is equipped with sand-spraying hole (4), the lower end inner cavity of the nozzle (1) is equipped with the horn mouth (2) of up-small and down-big cone shape, institute
The lower end periphery for stating nozzle (1) is arranged with the seal rubber sleeve (3) wrapped up, and the seal rubber sleeve (3) penetrates sand with described
Hole (4) is adapted.
5. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to claim 4, which is characterized in that described
Between the cold-box upper mold (8) and the cold-box lower die (9), the sand-spraying hole (4) is located at cold-box cavity (6)
In the cold-box upper mold (8), and the sand-spraying hole (4) is connected with the cold-box cavity (6).
6. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to claim 4, which is characterized in that described
Sand-spraying hole (4) includes accommodating chamber (41) and conical cavity (42), correspondingly, the seal rubber sleeve (3) include interconnecting piece (31) and
Tapered portion (32) is closely connected between the interconnecting piece (31) and the nozzle (1) by buckle, the taper
It is interference fit between portion (32) and the conical cavity (42), is between the nozzle (1) and the accommodating chamber (41)
Clearance fit.
7. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to claim 4, which is characterized in that described to penetrate
Having in mouth (1) and penetrates sand channel (10), described penetrating is equipped with radially narrowed transition passage (11) below sand channel (10),
Mutually it is connected at the top of the transition passage (11) and the horn mouth (2).
8. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to any one of claim 4-7, special
Sign is that the taper of the horn mouth (2) is 40 °~60 °.
9. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to claim 8, which is characterized in that the loudspeaker
The taper of mouth (2) is 50 °.
10. a kind of structure of casting cold-box nozzle end Sand sticking-resistant according to claim 4, which is characterized in that described
Sand-spraying hole (4) further include be located at the cold-box upper mold (8) at the top of guiding cavity (43).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810283220.8A CN108273968A (en) | 2018-04-02 | 2018-04-02 | The method and structure of a kind of casting cold-box nozzle end Sand sticking-resistant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810283220.8A CN108273968A (en) | 2018-04-02 | 2018-04-02 | The method and structure of a kind of casting cold-box nozzle end Sand sticking-resistant |
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CN108273968A true CN108273968A (en) | 2018-07-13 |
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CN201810283220.8A Pending CN108273968A (en) | 2018-04-02 | 2018-04-02 | The method and structure of a kind of casting cold-box nozzle end Sand sticking-resistant |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113084093A (en) * | 2021-04-28 | 2021-07-09 | 广西玉柴机器配件制造有限公司 | Deep hanging core iron mold sand-lined casting process and sand-lined mold thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566614A (en) * | 1982-10-15 | 1986-01-28 | Frykendahl Bjoern | Casting nozzle |
JPH0919741A (en) * | 1995-07-06 | 1997-01-21 | Mitsubishi Automob Eng Co Ltd | Core molding machine |
JP2014161850A (en) * | 2013-02-21 | 2014-09-08 | Aisin Takaoka Ltd | Blow nozzle for molding casting die |
CN104289679A (en) * | 2014-10-02 | 2015-01-21 | 广西玉柴机器股份有限公司 | Sand shooting sealing structure and installation and utilization method thereof |
KR20150061749A (en) * | 2013-11-28 | 2015-06-05 | 최상진 | blowing nozzle for molding sand |
KR20150127355A (en) * | 2014-05-07 | 2015-11-17 | 정원도 | nozzle tip combination structure |
CN208067260U (en) * | 2018-04-02 | 2018-11-09 | 广西玉柴机器股份有限公司 | A kind of structure of casting cold-box nozzle end Sand sticking-resistant |
-
2018
- 2018-04-02 CN CN201810283220.8A patent/CN108273968A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566614A (en) * | 1982-10-15 | 1986-01-28 | Frykendahl Bjoern | Casting nozzle |
JPH0919741A (en) * | 1995-07-06 | 1997-01-21 | Mitsubishi Automob Eng Co Ltd | Core molding machine |
JP2014161850A (en) * | 2013-02-21 | 2014-09-08 | Aisin Takaoka Ltd | Blow nozzle for molding casting die |
KR20150061749A (en) * | 2013-11-28 | 2015-06-05 | 최상진 | blowing nozzle for molding sand |
KR20150127355A (en) * | 2014-05-07 | 2015-11-17 | 정원도 | nozzle tip combination structure |
CN104289679A (en) * | 2014-10-02 | 2015-01-21 | 广西玉柴机器股份有限公司 | Sand shooting sealing structure and installation and utilization method thereof |
CN208067260U (en) * | 2018-04-02 | 2018-11-09 | 广西玉柴机器股份有限公司 | A kind of structure of casting cold-box nozzle end Sand sticking-resistant |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113084093A (en) * | 2021-04-28 | 2021-07-09 | 广西玉柴机器配件制造有限公司 | Deep hanging core iron mold sand-lined casting process and sand-lined mold thereof |
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PB01 | Publication | ||
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Application publication date: 20180713 |