CN102248131B - Sand core rod pre-tightening device - Google Patents
Sand core rod pre-tightening device Download PDFInfo
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- CN102248131B CN102248131B CN 201110177325 CN201110177325A CN102248131B CN 102248131 B CN102248131 B CN 102248131B CN 201110177325 CN201110177325 CN 201110177325 CN 201110177325 A CN201110177325 A CN 201110177325A CN 102248131 B CN102248131 B CN 102248131B
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- China
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- sand core
- core rod
- pressing spring
- force bearing
- axle
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Abstract
The invention relates to a sand core rod pre-tightening device which comprises a shaft, a coupling, two load-bearing plates, a pre-tightening pressure spring and a nut, wherein the coupling is arranged at one end of the shaft, the coupling is connected with a core rod, the two load-bearing plates are arranged on the shaft and face each other, the pre-tightening pressure spring is arranged between the two load-bearing plates, the nut is arranged at the other end of the shaft and positioned on the outer side of either load-bearing plate to allow the pre-tightening pressure spring to generate a pre-tightening force, and the other load-bearing plate leans against the outer surface of a sand box. The sand core rod pre-tightening device provided by the invention is applied to slim and long cast products or sand core rods with slim and long holes. Different pre-tightening forces are generated by adjusting the degree of deformation of the pressure spring and continuously applied to a sand core rod, so as to continuously increase the rigidity of the sand core rod during the use process.
Description
Technical field
The present invention relates to the metallurgical casting industry, particularly a kind of sand core rod pre-tightening device.
Background technology
In the Foundry Production, leptosomatic foundry goods or elongate slot often cause defective because sand core rod insufficient rigidity in casting process causes bending, and foundry goods inwall or hole are not straight or scrap at present.
How to improve this situation, seeking a kind of sand core rod pre-tightening device becomes pursuing a goal of these those skilled in the art.
Summary of the invention
Task of the present invention provides a kind of sand core rod pre-tightening device, and it has solved the existing problem of above-mentioned prior art, utilizes sand core rod pre-tightening device to strengthen rigidity of sand core bar, reaches the in use purpose of strengthen continuously rigidity of sand core bar.
Technical solution of the present invention is as follows:
A kind of sand core rod pre-tightening device comprises: axle, hookup, two force bearing plates, pretension pressing spring and nuts;
Hookup is settled in one end of described axle, and hookup is connected with arbor;
Two force bearing plates of relatively putting are installed on the described axle, the pretension pressing spring is set between two force bearing plates;
The other end of described axle and be positioned at wherein the outer sidespin of a force bearing plate and put a nut, so that the distortion of pretension pressing spring produces pretightning force, another piece force bearing plate rests on the sandbox outside.
Described pretension pressing spring arranges heat-insulating material on the axle surface that is connected with axle.
Described pretension pressing spring arranges heat-insulating material in the force bearing plate contact site that contacts with force bearing plate.
Described pretension pressing spring arranges heat-insulating material in the force bearing plate contact site that contacts with force bearing plate.
Described pretension pressing spring is single spring.
Described pretension pressing spring is several not isometrical spring housing groups.
Described pretension pressing spring consists of many groups of arrangements around axle.
The present invention is owing to adopted above technical scheme, make it compared with prior art, sand core rod pre-tightening device of the present invention be a kind of economy, effectively, strengthen the preferably pre-tightening apparatus of rigidity of sand core bar, can produce sand core rod and continue prefastening force, have comparatively desirable practical function.
Sand core rod pre-tightening device of the present invention is used for leptosomatic foundry goods or elongate slot sand core rod, produces different prefastening forces and continuous action on sand core rod by regulating the pressing spring deformation extent, in use the strengthen continuously rigidity of sand core bar.
Description of drawings
Fig. 1 is the structural representation of a kind of sand core rod pre-tightening device of the present invention.
Reference numeral:
1 is axle, and 2 is nut, and 3 is force bearing plate, and 4 is the pretension pressing spring, and 5 is force bearing plate, and 6 is hookup, and 7,8,9 is heat-insulating material.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is elaborated.
Referring to Fig. 1, the invention provides a kind of sand core rod pre-tightening device, it mainly is comprised of axle 1, hookup 6, two force bearing plates 3,5, pretension pressing spring 4 and nut 2.
Hookup 6 is settled in a end at axle 1, and hookup 6 is connected with arbor.At axle 1 two force bearing plates 3,5 of relatively putting are installed, between two force bearing plates 3,5, pretension pressing spring 4 are set.
In the other end of axle 1 and be positioned at wherein the outer sidespin of a force bearing plate 3 and put a nut 2, so that 4 distortion of pretension pressing spring produce pretightning forces, another piece force bearing plate 5 rests on the sandbox outside.
Sand core rod pre-tightening device of the present invention is for leptosomatic foundry goods or elongate slot sand core rod in actual use, strengthen continuously rigidity of sand core bar in use, and its concrete formation can be made following layout:
Are connected with hookup by axle 1 and are connected with arbor, sand core rod pre-tightening device is external in the sandbox outside. Force bearing plate 3,5 is arranged on the axle 1, pretension pressing spring 4 is set between force bearing plate 3,5, force bearing plate 3 external nuts 2, force bearing plate 5 can rest on the sandbox outside.Turn nut 2 and make 4 distortion of pretension pressing spring produce pretightning force, produce lasting prefastening force at the arbor two ends by axle 1 and hookup 6.
The position that contacts with pretension pressing spring 4 arranges heat-insulating material 7,8,9, prevents that heat is conducted the function that affects pretension pressing spring 4 in the use procedure.
The arbor two ends can be installed device as shown in Figure 1 simultaneously in use; Also can be at arbor one end installation device as shown in Figure 1, at the arbor other end installation device that removes force bearing plate 5, pretension pressing spring 4 as shown in Figure 1.
In sum, sand core rod pre-tightening device of the present invention is used for leptosomatic foundry goods or elongate slot sand core rod, produce different prefastening forces and continuous action on sand core rod by regulating the pressing spring deformation extent, in use the strengthen continuously rigidity of sand core bar.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment only is that the present invention is described, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of above-described embodiment, modification etc.
Claims (4)
1. a sand core rod pre-tightening device is characterized in that, comprising: axle (1), hookup (6), two force bearing plates (3,5), pretension pressing spring (4) and nut (2);
Hookup (6) is settled in one end of described axle (1), and hookup (6) is connected with arbor;
Two force bearing plates (3,5) of relatively putting of the upper installation of described axle (1) arrange pretension pressing spring (4) between two force bearing plates (3,5);
The other end of described axle (1) and be positioned at wherein the outer sidespin of a force bearing plate (3) and put a nut (2), so that pretension pressing spring (4) distortion produces pretightning force, another piece force bearing plate (5) rests on the sandbox outside;
Described pretension pressing spring (4) arranges heat-insulating material (8) on axle (1) surface that is connected with axle (1);
Described pretension pressing spring (4) all arranges heat-insulating material in the force bearing plate contact site that contacts with two force bearing plates.
2. sand core rod pre-tightening device according to claim 1, it is characterized in that: described pretension pressing spring (4) is single spring.
3. sand core rod pre-tightening device according to claim 1 is characterized in that: described pretension pressing spring (4) is several not isometrical spring housing groups.
4. sand core rod pre-tightening device according to claim 1 is characterized in that: described pretension pressing spring (4) consists of many groups of arrangements around axle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177325 CN102248131B (en) | 2011-06-28 | 2011-06-28 | Sand core rod pre-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177325 CN102248131B (en) | 2011-06-28 | 2011-06-28 | Sand core rod pre-tightening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248131A CN102248131A (en) | 2011-11-23 |
| CN102248131B true CN102248131B (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110177325 Active CN102248131B (en) | 2011-06-28 | 2011-06-28 | Sand core rod pre-tightening device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102248131B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584080A (en) * | 2017-09-22 | 2018-01-16 | 芜湖火龙动力科技有限公司 | A kind of sand core rod pre-tightening device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1759526A1 (en) * | 1989-07-11 | 1992-09-07 | Институт проблем литья АН УССР | Casting box for vacuum molding |
| CN101758166A (en) * | 2009-11-12 | 2010-06-30 | 无锡锡南铸造机械有限公司 | Large drawing and overturning molding box closer |
| CN101920321A (en) * | 2010-08-13 | 2010-12-22 | 安徽恒兴镀锌有限公司 | Cooling device of pneumatic springs of side-mounted continuous casting molten steel valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589759A (en) * | 1981-07-10 | 1983-01-20 | 有限会社 山崎工作所 | Venting device for die |
| JPH08168863A (en) * | 1994-12-16 | 1996-07-02 | Kubota Corp | Device for fitting core holding frame |
-
2011
- 2011-06-28 CN CN 201110177325 patent/CN102248131B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1759526A1 (en) * | 1989-07-11 | 1992-09-07 | Институт проблем литья АН УССР | Casting box for vacuum molding |
| CN101758166A (en) * | 2009-11-12 | 2010-06-30 | 无锡锡南铸造机械有限公司 | Large drawing and overturning molding box closer |
| CN101920321A (en) * | 2010-08-13 | 2010-12-22 | 安徽恒兴镀锌有限公司 | Cooling device of pneumatic springs of side-mounted continuous casting molten steel valve |
Non-Patent Citations (1)
| Title |
|---|
| 技工学校机械类通用教材编审委员会.铸工工艺学.《铸工工艺学》.机械工业出版社,1980,(第1版),59. * |
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|---|---|
| CN102248131A (en) | 2011-11-23 |
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