CN101412074B - Self-floating type upper push rod structure in cold box - Google Patents
Self-floating type upper push rod structure in cold box Download PDFInfo
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- CN101412074B CN101412074B CN 200810136356 CN200810136356A CN101412074B CN 101412074 B CN101412074 B CN 101412074B CN 200810136356 CN200810136356 CN 200810136356 CN 200810136356 A CN200810136356 A CN 200810136356A CN 101412074 B CN101412074 B CN 101412074B
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Abstract
The invention discloses a self-floating type upper pushing rod structure in a cold core box. One end head, corresponding to a die cavity, of the upper pushing wall of the cold core box is provided with a nozzle hole, an upper pushing core plate of the cold core box is provided with an upper pushing core rod which is inserted in the nozzle hole to push a sand core out of the die cavity, the other end head, corresponding to a die cavity, of the upper pushing wall of the cold core box is provided with a through hole in which a pushing rod is movably inserted, an elastic piece used to supply the pushing rod with the elastic restoring force is arranged between the pushing rod and the upper pushing wall, and the upper pushing core plate of the cold core box is provided with a pushing core press rod used to be tightly pressed against the pushing rod to push the sand core out. When the core is pushed, the upper pushing core rod of the upper pushing core plate is inserted in the nozzle hole to push the sand core; at the same time, the pushing core press rod of the upper pushing core plate pushes the pushing rod to push the core and the elastic piece is tightly pressed and simultaneously pushes the two end heads of the sand core, so that the pushing core action is smooth, and the sand core can be pushed out without damage, the sand core is high in yield and completely formed, and after the pushing core, the pushing rod is repositioned due to the elastic restoring force of the elastic piece.
Description
Technical field
The present invention relates to self-floating type upper push rod structure in a kind of cold-box.
Background technology
In the prior art, cold-box generally adopts triethylamine cold core technology, is to inject in the core box die cavity with the mixed silica sand of resin, to be blown into the triethylamine gas of heating again, chemical reaction takes place, to solidify to form core, to be used for casting pouring.Last plunger tip bar is usually placed in the nozzle position, when the coremaking of strip core, generally needs one and penetrates sand two plunger tip, in the other end of nozzle position the plunger tip problem can take place like this; If when adopting two to penetrate sand, really can two plunger tip, but this moment core yield rate low.
Summary of the invention
The object of the present invention is to provide one of a kind of need to penetrate the self-floating type upper push rod structure that uses in the cold-box of sand two plunger tip.
In order to reach above purpose, the technical solution used in the present invention is: self-floating type upper push rod structure in a kind of cold-box, the last roof of cold-box offers the nozzle hole on the position corresponding to die cavity one termination, have on the last plunger tip plate of cold-box and stretch into the last plunger tip bar that described nozzle hole ejects the core in the die cavity, the last roof of cold-box offers through hole on the position corresponding to another termination of die cavity, be inserted with push rod in the described through hole slidably, described push rod and described on be provided with the elastic component that is used to provide an elastic-restoring force of described push rod between the roof, be useful on the last plunger tip plate of cold-box and push against the plunger tip depression bar that described push rod ejects core.
Because the present invention has adopted above technical scheme, its advantage is: during plunger tip, under the impetus of last plunger tip plate, last plunger tip bar on the last plunger tip plate can stretch into the nozzle hole, core in the die cavity of top, simultaneously, promote the push rod plunger tip by the plunger tip depression bar on the last plunger tip plate, this moment, elastic component was compacted, pushed up simultaneously in the two ends of core, and the plunger tip action is relatively more steady and can eject core in good condition, the yield rate height of core, moulding is complete, and by the elastic-restoring force of elastic component, push rod resetted after the plunger tip action was finished.
Description of drawings
Accompanying drawing 1 is that the master with cold-box of the present invention looks cutaway view;
Accompanying drawing 2 is that master of the present invention looks cutaway view.
The specific embodiment
Further set forth concrete structure of the present invention and operation principle below in conjunction with accompanying drawing.
Shown in accompanying drawing 1-2, self-floating type upper push rod structure in a kind of cold-box, be applied in the cold-box of penetrating sand two plunger tip, the die cavity system strip core 1 of cold-box, the last roof 2 of cold-box offers nozzle hole 3 on the position corresponding to die cavity one termination, the nozzle of penetrating on the sand plate 10 11 inserts in the nozzle hole 3, and loose sand is injected in the die cavity, solidify to form core sand.On the last plunger tip plate 4 of cold-box last plunger tip bar 5 is arranged, after being solidified into core sand, last plunger tip bar 5 can stretch into described nozzle hole 3, core 1 in the die cavity of top, because the special shape of core 1, generally need push up simultaneously and could eject core 1 in good condition in the two ends of core 1, for achieving the above object, the last roof 2 of cold-box offers through hole 6 on the position corresponding to another termination of die cavity, be inserted with push rod 7 slidably in the described through hole 6, described push rod 7 and described on be provided with the elastic component 8 that is used to provide 7 one elastic-restoring forces of described push rod between the roof 2, be useful on the last plunger tip plate 4 of cold-box and push against the plunger tip depression bar 9 that described push rod 7 ejects core 1.
In Fig. 2, it is little broad in the middle that through hole 6 is two, be formed by connecting by three sections cylindrical portion, the diameter at the two ends of push rod 7 is slightly less than the two ends diameter of through hole 6, and flexible 8 of the interlude of through hole 6, elastic component 8 are enclosed within on the push rod 7, during plunger tip, under the impetus of last plunger tip plate 4, the plunger tip bar 5 on the last plunger tip plate 4 can stretch into nozzle hole 3, the core 1 in the die cavity of top, simultaneously, promote push rod 7 plunger tips by the plunger tip depression bar on the last plunger tip plate 49, this moment, elastic component 8 was compacted, for strip core 1, two ends at core 1 is pushed up simultaneously, the plunger tip action is relatively more steady and can eject core 1 in good condition, and by the elastic-restoring force of elastic component 8, push rod 7 resetted after the plunger tip action was finished.To sum up, use this self-floating type upper push rod, it is complete to realize penetrating the sand moulding smoothly, and plunger tip is steady, and guarantees the integrality of core.
Claims (1)
1. self-floating type upper push rod structure in the cold-box, the last roof of cold-box offers the nozzle hole on the position corresponding to die cavity one termination, have on the last plunger tip plate of cold-box and stretch into the last plunger tip bar that described nozzle hole ejects the core in the die cavity, it is characterized in that: the last roof of cold-box offers through hole on the position corresponding to another termination of die cavity, be inserted with push rod in the described through hole slidably, described push rod and described on be provided with the elastic component that is used to provide an elastic-restoring force of described push rod between the roof, be useful on the last plunger tip plate of cold-box and push against the plunger tip depression bar that described push rod ejects core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810136356 CN101412074B (en) | 2008-11-28 | 2008-11-28 | Self-floating type upper push rod structure in cold box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810136356 CN101412074B (en) | 2008-11-28 | 2008-11-28 | Self-floating type upper push rod structure in cold box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101412074A CN101412074A (en) | 2009-04-22 |
| CN101412074B true CN101412074B (en) | 2010-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810136356 Active CN101412074B (en) | 2008-11-28 | 2008-11-28 | Self-floating type upper push rod structure in cold box |
Country Status (1)
| Country | Link |
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| CN (1) | CN101412074B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451888A (en) * | 2011-11-14 | 2012-05-16 | 山西省高平市泫氏铸业有限公司 | Novel core hanging mechanism |
| CN103317088B (en) * | 2013-05-28 | 2015-06-03 | 宁波全力机械模具有限公司 | Synchronous push rod automatic compensation structure of core box |
| CN104722707B (en) * | 2015-03-20 | 2016-10-26 | 重庆长安汽车股份有限公司 | A kind of die for making core |
| CN106392021B (en) * | 2016-10-17 | 2018-10-26 | 株洲中航动力精密铸造有限公司 | Mold pushing mechanism and mold equipped with the mold pushing mechanism |
| CN106623815B (en) * | 2017-02-07 | 2018-07-06 | 佛山市恒学科技服务有限公司 | A kind of adjustable backform device of core shooter |
-
2008
- 2008-11-28 CN CN 200810136356 patent/CN101412074B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101412074A (en) | 2009-04-22 |
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Address after: 215217, No. 1999, Xiao Xi Road, Tongli Town, Wujiang District, Jiangsu, Suzhou Patentee after: Suzhou Mingzhi Technology Co., Ltd Address before: 215217, No. 1, same highway, Tongli Town, Jiangsu, Wujiang Patentee before: SUZHOU MINGZHI TECHNOLOGY Co.,Ltd. |