CN105170912A - Sand blowing method for complex sand cores - Google Patents
Sand blowing method for complex sand cores Download PDFInfo
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- CN105170912A CN105170912A CN201510682679.1A CN201510682679A CN105170912A CN 105170912 A CN105170912 A CN 105170912A CN 201510682679 A CN201510682679 A CN 201510682679A CN 105170912 A CN105170912 A CN 105170912A
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- sand
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- shooting head
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- core box
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Abstract
The invention discloses a sand blowing method for complex sand cores. The core sand amount in a sand blowing head is 1 to 2 times that of a one-time sand blowing amount, and an aeration mode of the sand blowing method comprises the following steps: S1, a temperature rising and mould filling stage: introducing first-time compressed air with the intensity of pressure of 1-4 BAR into the sand blowing head, and filling a core box with a part of the core sand in the sand blowing head so as to fundamentally fill up the core box; S2, a first-time compaction stage: stopping introducing the first-time compressed air into the sand blowing head so as to compact the core sand in the core box; S3, a second-time compaction stage: introducing second-time compressed air with the intensity of pressure of P2 into the sand blowing head so as to enable the core sand in the core box to further fill the tail end of the core box and compact, wherein the core sand amount in the sand blowing head is one time to two times that of the one-time sand blowing amount, and the compressed air can directly act on the core sand which is about to be subjected to sand blowing, so that the waste of the intensity of pressure is reduced; through introducing the second-time compressed air, the sand blowing is carried out further, and the core sand in the core box is further compacted and enabled to fill up the tail end and corners of the core box; the sand blowing method is suitable for mould filling of the complex sand cores.
Description
Technical field
The present invention relates to casting and molding field, be specifically related to a kind of formative technology in casting and molding field.
Background technology
The sand molding principle of penetrating of core shooter by compressed air, core sand is penetrated plate through mould from sand-shooting head device to be packed into core box moulding, general She Sha mechanism is primarily of gas storage bag, intake valve, Sand jet valve composition at present, intake valve controls outside factory building air inlet in the inner constant voltage of gas bag (i.e. core shooter penetrate sand pressure), Sand jet valve controls gas bag gas outlet and opens and close, and completes core-shooting process.
The core shooter of existing routine, core sand sand amount in sand-shooting head is 3-5 times that once penetrates sand amount, and only include a gas storage bag, Sand jet valve is opened and is penetrated sand and start, when reaching the shooting time of setting, Sand jet valve is closed, complete and penetrate sand, when producing complicated core, when occurring penetrating unreal problem, just be merely able to improve and penetrate sand pressure and obtain qualified core, but penetrate sand pressure and strengthen the wearing and tearing that rear first easily causes mould, long-time use needs manual repair mould, second easily makes Mold air vent plug block up, make to penetrate next time sand effect poorer, and increase the cleaning venting plug frequency, affect coremaking efficiency.3rd easily makes mold cavity surface scab, increases labor cleaning's workload.
Summary of the invention
What goal of the invention of the present invention was to provide a kind of complicated core penetrates sand method, adopts to add second time compressed air and carry out penetrating the large method of sand for twice, makes core sand fill up core box completely, and makes core sand consolidation.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of complicated sand mold penetrate sand method, the core sand sand amount in sand-shooting head is 1 ~ 2 times that once penetrates sand amount, described in penetrate sand method ventilating mode comprise the steps:
The type stage is filled in S1, boosting, the first time compressed air that pressure is 1-4bar is passed in sand-shooting head, rapid pressure in described sand-shooting head, under the compressed-air actuated promotion of described first time, a part of core sand in described sand-shooting head is filled in core box, described a part of core sand fills up described core box substantially, this phase duration 0.1S ~ 5S;
S2, consolidation stage first time, stop in described sand-shooting head, pass into first time compressed air, under the promotion of sand-shooting head internal gas pressure and core box top draught head, a part of core sand in described sand-shooting head continues to be filled in core box, the core sand in core box is made to fill end and the consolidation of core box further, this phase duration 0.5S ~ 5S;
S3, second time consolidation stage, the second time compressed air that pressure is 3-6bar is passed in sand-shooting head, rapid pressure in described sand-shooting head, under the compressed-air actuated promotion of described second time, a part of core sand in described sand-shooting head continues to be filled in core box, the core sand in core box is made to fill end and the consolidation of core box further, this phase duration 0.5S ~ 5S.
In technique scheme, described sand method of penetrating adopts and penetrates sand device and carry out, described sand device of penetrating comprises compression gas bag and sand-shooting head, described compression gas bag connects compressed gas source through intake valve, described compression gas bag connects described sand-shooting head through Sand jet valve, the volume of described sand-shooting head is 1 ~ 2 times that once penetrates sand amount, in S1, open described Sand jet valve, the first time compressed air that pressure is 1-4bar is passed in described sand-shooting head, in S2, close described Sand jet valve, stop in described sand-shooting head, pass into first time compressed air, also comprise in S2 and open described intake valve, the second compressed air that pressure is 3-6bar is passed in described compression gas bag, in S3, open described Sand jet valve, described second time compressed air is passed in described sand-shooting head.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. the core sand amount in the present invention in sand-shooting head is once penetrate one times of sand amount to twice, and compressed air does not need after entering sand-shooting head through a large amount of core sands, just can act directly on and be about to carry out penetrating on the core sand of sand, decrease the waste of pressure;
2. in the present invention by pass into first time compressed air, to realize in sand-shooting head rapid pressure and core sand filled the object of type to core box, stop passing into first time compressed air, make the further consolidation of the core sand in core box, by passing into second time compressed air, carry out further penetrating sand, make the core sand in core box fill up end and the corner of core box, what be applicable to complicated core fills type;
3. the first time in the present invention, compressed-air actuated pressure was less; core sand fills type with slower speed and covers most core box inwall; damage can not be caused to core box; play the object of protection mould; the compressed-air actuated pressure of second time is larger; core sand carries out consolidation with speed faster, plays the object of consolidation sand mold, and the time interval and the pressure difference of penetrating sand for twice can make core sand reach the object of quick consolidation when second time penetrates sand.
Accompanying drawing explanation
Fig. 1 is the front view penetrating sand device disclosed by the invention;
Fig. 2 is the top view penetrating sand device disclosed by the invention; .
Wherein: 1, compress gas bag; 2, inlet channel; 3, outlet passageway; 4, intake valve; 5, Sand jet valve, 6. blasting unit; 7, sand-shooting head.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment one
See Fig. 1 and Fig. 2, as shown in legend wherein, penetrate sand device and comprise compression gas bag 1 and sand-shooting head 7, compression gas bag 1 is provided with the inlet channel 2 being communicated with compressed gas source is communicated with sand-shooting head 7 outlet passageway 3 with by blasting unit 6, inlet channel 2 is provided with intake valve 4, outlet passageway 3 is provided with Sand jet valve 5, and the volume of sand-shooting head 7 is 1.5 times that once penetrate sand amount, and the core sand sand amount in sand-shooting head 7 is 1.5 times that once penetrate sand amount.
Be below adopt the above-mentioned ventilating mode penetrating sand method penetrating sand device: described in penetrate sand method ventilating mode comprise the steps:
The type stage is filled in S1, boosting, open Sand jet valve 5, the first time compressed air that pressure is 2.5bar is passed in sand-shooting head 7, rapid pressure in sand-shooting head 7, under first time compressed-air actuated promotion, most of core sand (about 90%) in sand-shooting head 7 is filled in core box, and a part of core sand fills up core box substantially, this phase duration 3S;
S2, consolidation stage first time, close Sand jet valve 5, stop in institute's sand-shooting head 7, pass into first time compressed air, open intake valve 4 simultaneously, in compression gas bag 1, pass into the second time compressed air that pressure is 4.5bar, under the promotion of sand-shooting head 7 internal gas pressure and core box top draught head, remainder core sand in sand-shooting head 7 continues to be filled in core box, the core sand in core box is made to fill end and the consolidation of core box, close to the 100% consolidation limit, this phase duration 3.5S;
S3, second time consolidation stage, open Sand jet valve 5, second time compressed air is passed in sand-shooting head 7, rapid pressure in sand-shooting head 7, under the compressed-air actuated promotion of second time, remainder core sand in sand-shooting head 7 continues to be filled in core box, makes core sand 100% consolidation in core box, this phase duration 3.5S.
Embodiment two
All the other are identical with embodiment one, and difference is, the volume of sand-shooting head is 1.8 times that once penetrate sand amount, and the core sand sand amount in sand-shooting head is 1.8 times that once penetrate sand amount.
Embodiment three
All the other are identical with embodiment one, and difference is, the volume of sand-shooting head is 1.2 times that once penetrate sand amount, and the core sand sand amount in sand-shooting head is 1.2 times that once penetrate sand amount.
Embodiment four
All the other are identical with embodiment one, and difference is, S1 phase lasts 2S, S2 phase lasts 2S, S3 phase lasts 2S, and first time, compressed-air actuated pressure was 4bar, and the compressed-air actuated pressure of second time is 6bar.
Embodiment five
All the other are identical with embodiment one, and difference is, S1 phase lasts 5S, S2 phase lasts 5S, S3 phase lasts 5S, and first time, compressed-air actuated pressure was 2bar, and the compressed-air actuated pressure of second time is 3.5bar.
Claims (2)
1. complicated sand mold penetrate a sand method, it is characterized in that, the core sand sand amount in sand-shooting head is 1 ~ 2 times that once penetrates sand amount, described in penetrate sand method ventilating mode comprise the steps:
The type stage is filled in S1, boosting, the first time compressed air that pressure is 1-4bar is passed in sand-shooting head, rapid pressure in described sand-shooting head, under the compressed-air actuated promotion of described first time, a part of core sand in described sand-shooting head is filled in core box, described a part of core sand fills up described core box substantially, this phase duration 0.1S ~ 5S;
S2, consolidation stage first time, stop in described sand-shooting head, pass into first time compressed air, under the promotion of sand-shooting head internal gas pressure and core box top draught head, a part of core sand in described sand-shooting head continues to be filled in core box, the core sand in core box is made to fill end and the consolidation of core box further, this phase duration 0.5S ~ 5S;
S3, second time consolidation stage, the second time compressed air that pressure is 3-6bar is passed in sand-shooting head, rapid pressure in described sand-shooting head, under the compressed-air actuated promotion of described second time, a part of core sand in described sand-shooting head continues to be filled in core box, the core sand in core box is made to fill end and the consolidation of core box further, this phase duration 0.5S ~ 5S.
2. according to claim 1ly penetrate sand method, it is characterized in that, described sand method of penetrating adopts and penetrates sand device and carry out, described sand device of penetrating comprises compression gas bag and sand-shooting head, described compression gas bag connects compressed gas source through intake valve, described compression gas bag connects described sand-shooting head through Sand jet valve, the volume of described sand-shooting head is 1 ~ 2 times that once penetrates sand amount, in S1, open described Sand jet valve, the first time compressed air that pressure is 1-4bar is passed in described sand-shooting head, in S2, close described Sand jet valve, stop in described sand-shooting head, pass into first time compressed air, also comprise in S2 and open described intake valve, the second compressed air that pressure is 3-6bar is passed in described compression gas bag, in S3, open described Sand jet valve, described second time compressed air is passed in described sand-shooting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682679.1A CN105170912B (en) | 2015-10-21 | 2015-10-21 | A kind of complicated core penetrates sand method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682679.1A CN105170912B (en) | 2015-10-21 | 2015-10-21 | A kind of complicated core penetrates sand method |
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| Publication Number | Publication Date |
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| CN105170912A true CN105170912A (en) | 2015-12-23 |
| CN105170912B CN105170912B (en) | 2017-07-11 |
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| CN201510682679.1A Active CN105170912B (en) | 2015-10-21 | 2015-10-21 | A kind of complicated core penetrates sand method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333687A (en) * | 2021-05-18 | 2021-09-03 | 苏州明志科技股份有限公司 | Core making method and device of large sand core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19737716C1 (en) * | 1997-08-29 | 1999-03-04 | Joachim Laempe | Procedure for cleaning a shooting head |
| DE19642499B4 (en) * | 1996-10-15 | 2005-07-14 | Vaw Alucast Gmbh | Device for producing casting molds or molded parts |
| CN201091905Y (en) * | 2007-09-26 | 2008-07-30 | 苏州工业园区明志铸造装备有限公司 | Sand spraying mechanism for making complex core |
| CN104399904A (en) * | 2014-12-18 | 2015-03-11 | 苏州明志科技有限公司 | Controllable sand shooting mechanism and controllable sand shooting method of core shooter |
| CN204430214U (en) * | 2014-12-18 | 2015-07-01 | 苏州明志科技有限公司 | A kind of controlled She Sha mechanism of core shooter |
-
2015
- 2015-10-21 CN CN201510682679.1A patent/CN105170912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19642499B4 (en) * | 1996-10-15 | 2005-07-14 | Vaw Alucast Gmbh | Device for producing casting molds or molded parts |
| DE19737716C1 (en) * | 1997-08-29 | 1999-03-04 | Joachim Laempe | Procedure for cleaning a shooting head |
| CN201091905Y (en) * | 2007-09-26 | 2008-07-30 | 苏州工业园区明志铸造装备有限公司 | Sand spraying mechanism for making complex core |
| CN104399904A (en) * | 2014-12-18 | 2015-03-11 | 苏州明志科技有限公司 | Controllable sand shooting mechanism and controllable sand shooting method of core shooter |
| CN204430214U (en) * | 2014-12-18 | 2015-07-01 | 苏州明志科技有限公司 | A kind of controlled She Sha mechanism of core shooter |
Non-Patent Citations (1)
| Title |
|---|
| 阎荫槐: "《高等学校教材 铸造机械基础》", 31 August 1990 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333687A (en) * | 2021-05-18 | 2021-09-03 | 苏州明志科技股份有限公司 | Core making method and device of large sand core |
| CN113333687B (en) * | 2021-05-18 | 2022-08-09 | 苏州明志科技股份有限公司 | Core making method and device of large sand core |
| WO2022242183A1 (en) * | 2021-05-18 | 2022-11-24 | 苏州明志科技股份有限公司 | Core-making method and apparatus for large sand core |
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| Publication number | Publication date |
|---|---|
| CN105170912B (en) | 2017-07-11 |
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Address after: 215217, No. 1, No. 2 highway, Tongli Town, Wujiang District, Jiangsu, Suzhou Patentee after: Suzhou Mingzhi Technology Co., Ltd Address before: 215217, No. 1, No. 2 highway, Tongli Town, Wujiang District, Jiangsu, Suzhou Patentee before: SUZHOU MINGZHI TECHNOLOGY Co.,Ltd. |