CN102581092A - Inner core die for bent pipe - Google Patents
Inner core die for bent pipe Download PDFInfo
- Publication number
- CN102581092A CN102581092A CN2012100471674A CN201210047167A CN102581092A CN 102581092 A CN102581092 A CN 102581092A CN 2012100471674 A CN2012100471674 A CN 2012100471674A CN 201210047167 A CN201210047167 A CN 201210047167A CN 102581092 A CN102581092 A CN 102581092A
- Authority
- CN
- China
- Prior art keywords
- ball
- supporting disk
- spring
- core
- hole
- 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.)
- Granted
Links
- 210000001513 Elbow Anatomy 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Abstract
The invention relates to an inner core die for a bent pipe. The inner core die is characterized by comprising a supporting disk, a ball arc disk, a pull ball, rotation columns, an upper pin shaft, lower pin shafts, an upper spring and a lower spring, wherein a cambered groove is formed on each of two sides of the supporting disk; a plurality of grooves are formed on the circumferential surface of the supporting disk at equal intervals; the pull ball comprises a ball core and a connecting rod; one end of the connecting rod is connected with the ball core; the ball core of the pull ball is arranged in the cambered grooves on the supporting disk; the ball arc disk is covered on the outer sides of the cambered grooves on the supporting disk; each rotation column is arranged in each of the grooves on the circumferential surface of the supporting disk; a concave hole is formed above the rotation columns; the upper spring is arranged in the concave hole; the upper pin shaft is arranged in the concave hole on the outer side of the upper spring; a through hole vertical to the concave hole is formed below the rotation column; the lower spring is arranged in the through hole; and each lower pin shaft is arranged in each of through holes at two ends of the lower spring. The inner core die has the advantages of uniform supporting force, simple and quick demolding procedure and short demolding time, and the labor intensity of workers can be reduced.
Description
Technical field
The present invention relates to a kind of interior core, relate in particular to a kind of bend pipe and use interior core.
Background technology
At present domestic when producing bend pipe, the general core that adopts comprises core print and core bar, and when producing bend pipe, the blank pipe is under the promotion of hydraulic jack, and the blank pipe is along the core thick stick, and the angle of bend of core print carries out hole enlargement, and bending forms the blank of elbow gradually; But (for example: DN800-1400 wall thickness S >=70mm) is difficulty just when heavy construction needs the elbow of high temperature resistant, high pressure of heavy caliber, heavy wall; Because need to enlarge the blank caliber, the control temperature is 880 ℃～1020 ℃, under this temperature; The tensile strength of core print material descends rapidly; When pushing wall thickness＞70mm elbow, the phenomenon that the place of link of core print and core thick stick is torn often takes place, cause stop production to overhaul; Need another kind of method production, promptly the hot blank pipe of elder generation is heated to 900～1000 ℃ when producing bend pipe for this reason; Take out then in the mould that is placed on the head that bends, blank is pressed into elbow by the Pneumatic hydraulic oil cylinder; For avoiding tube wall to subside, blank pipe domestic demand is placed heavy supporting mould.Because supporting mould will be passed out while hot, therefore, " demoulding program " relies on the operator to beat, vibrate with iron rod, wooden stick fully, the some minutes time, inner mold and elbow thrown off; Its support force is inhomogeneous, and demoulding program is loaded down with trivial details, and labor strength is high, and demould time is long, and production efficiency is low, and the elbow inner surface is often wounded, and influences product quality.
Summary of the invention
To above-mentioned shortcoming, the object of the invention be to provide a kind of support force evenly, demoulding program simple and clear quick, can alleviate labor strength, the short bend pipe of demould time is used interior core.
Technology contents of the present invention is: a kind of bend pipe is used interior core, it is characterized in that it comprises supporting disk, ball arc dish, pulling force ball, Rotational Cylindrical, upper pin, lower bearing pin, upper spring and lower spring; Its both sides at supporting disk respectively are provided with an arc groove, and equidistance is provided with some grooves on the periphery of supporting disk; Top at ball arc dish is provided with a perforation; The pulling force bag is drawn together ball core and connecting rod, and connecting rod one end is connected with the ball core; The ball core of pulling force ball is installed in the arc groove of supporting disk, and ball arc disk cover is contained in the arc groove outside of supporting disk, and the connecting rod of pulling force ball passes from the perforation of ball arc dish; Respectively be provided with a Rotational Cylindrical in the groove on the periphery of supporting disk; Above Rotational Cylindrical, be provided with a shrinkage pool; In shrinkage pool, be provided with upper spring, upper pin is located in the shrinkage pool of upper spring outboard end, below Rotational Cylindrical, is provided with a through hole vertical with shrinkage pool; In through hole, be provided with lower spring, in the through hole at lower spring two ends, respectively be provided with a lower bearing pin.
The advantage that is compared with prior art had of the present invention is: after being placed on the present invention in the elbow material after the heating, when by the Pneumatic hydraulic oil cylinder blank being pressed into elbow, the support force of supporting disk is even; When taking out this bend pipe with interior core, only need that it is pulled out elbow and get final product, convenient and swift; Can alleviate the labor strength height thus, demould time is short, and the production efficiency of bend pipe is improved; Since need not be to beaing, the elbow inner surface is difficult for wounding, and product quality is improved.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is a use sketch map of the present invention.
Specific embodiment
A kind of bend pipe as depicted in figs. 1 and 2 is used interior core, it is characterized in that it comprises supporting disk 1, ball arc dish 2, pulling force ball 3, Rotational Cylindrical 4, upper pin 5, lower bearing pin 6, upper spring 7 and lower spring 8; Its both sides at supporting disk 1 respectively are provided with an arc groove 1.1, and equidistance is provided with some grooves 1.2 on the periphery of supporting disk; Be provided with a perforation 2.1 at the top of ball arc dish 2; Pulling force ball 3 comprises ball core 3.1 and connecting rod 3.2, and connecting rod 3.2 1 ends are connected with ball core 3.1; The ball core 3.1 of pulling force ball 3 is installed in the arc groove 1.1 of supporting disk 1, and ball arc disk cover 2 is contained in arc groove 1.1 outsides of supporting disk 1, and the connecting rod 3.2 of pulling force ball 3 passes from the perforation 2.1 of ball arc dish 2; Respectively be provided with a Rotational Cylindrical 4 in the groove 1.2 on the periphery of supporting disk 1; Above Rotational Cylindrical 4, be provided with a shrinkage pool 4.1; In shrinkage pool 4.1, be provided with upper spring 7; Upper pin 8 is located in the shrinkage pool 4.1 of upper spring 7 outboard ends; Below Rotational Cylindrical 4, be provided with a through hole 4.2 vertical, in through hole 4.2, be provided with lower spring 8, in the through hole 4.2 at lower spring 8 two ends, respectively be provided with a lower bearing pin 6 with shrinkage pool 4.1.
Operation principle of the present invention does; As shown in Figure 3ly after being interconnected by connecting rod 3.2 through attaching nut 10 with interior core 9, several bend pipes put into elbow material; After treating elbow material is pressed into bend pipe 11, should go out bend pipe with the inner core mode pulling by some bend pipes through traction.
Claims (1)
1. a bend pipe is used interior core, it is characterized in that it comprises supporting disk (1), ball arc dish (2), pulling force ball (3), Rotational Cylindrical (4), upper pin (5), lower bearing pin (6), upper spring (7) and lower spring (8); Its both sides at supporting disk (1) respectively are provided with an arc groove (1.1), and equidistance is provided with some grooves (1.2) on the periphery of supporting disk; Be provided with a perforation (2.1) at the top of ball arc dish (2); Pulling force ball (3) comprises ball core (3.1) and connecting rod (3.2), and connecting rod (3.2) one ends are connected with ball core (3.1); The ball core (3.1) of pulling force ball (3) is installed in the arc groove (1.1) of supporting disk (1), and ball arc disk cover (2) is contained in arc groove (1.1) outside of supporting disk (1), and the connecting rod (3.2) of pulling force ball (3) passes from the perforation (2.1) of ball arc dish (2); Respectively be provided with a Rotational Cylindrical (4) in the groove on the periphery of supporting disk (1) (1.2); Be provided with a shrinkage pool (4.1) in Rotational Cylindrical (4) top; In shrinkage pool (4.1), be provided with upper spring (7); Upper pin (8) is located in the shrinkage pool (4.1) of upper spring (7) outboard end; Be provided with a through hole (4.2) vertical in Rotational Cylindrical (4) below, in through hole (4.2), be provided with lower spring (8), in the through hole (4.2) at lower spring (8) two ends, respectively be provided with a lower bearing pin (6) with shrinkage pool (4.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100471674A CN102581092B (en) | 2012-02-28 | 2012-02-28 | Inner core die for bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100471674A CN102581092B (en) | 2012-02-28 | 2012-02-28 | Inner core die for bent pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102581092A true CN102581092A (en) | 2012-07-18 |
| CN102581092B CN102581092B (en) | 2013-12-04 |
Family
ID=46470637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100471674A Active CN102581092B (en) | 2012-02-28 | 2012-02-28 | Inner core die for bent pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102581092B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553397A (en) * | 2014-11-28 | 2015-04-29 | 芜湖贝斯特新能源开发有限公司 | Stamping mold and stamping device |
| CN110560530A (en) * | 2019-10-12 | 2019-12-13 | 合肥工业大学 | Variable-diameter crease-resistant core rod for bent pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2778402A (en) * | 1951-12-18 | 1957-01-22 | Western Electric Co | Flexible mandrels for bending wave guides |
| US4123930A (en) * | 1977-03-29 | 1978-11-07 | Teledyne Industries, Inc. | Mandrel for bending tubes |
| CN101367099A (en) * | 2007-08-14 | 2009-02-18 | 西北工业大学 | Flexible bend pipe core mould |
| JP2009113098A (en) * | 2007-11-08 | 2009-05-28 | Comco Corp | Mandrel for bending |
| CN202021249U (en) * | 2010-12-19 | 2011-11-02 | 富奥汽车零部件股份有限公司 | Hydraulically-driven core-pulling punch-forming device for pipes |
| CN202539305U (en) * | 2012-02-28 | 2012-11-21 | 江阴中南重工股份有限公司 | Internal mandrel for bent pipe |
-
2012
- 2012-02-28 CN CN2012100471674A patent/CN102581092B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2778402A (en) * | 1951-12-18 | 1957-01-22 | Western Electric Co | Flexible mandrels for bending wave guides |
| US4123930A (en) * | 1977-03-29 | 1978-11-07 | Teledyne Industries, Inc. | Mandrel for bending tubes |
| CN101367099A (en) * | 2007-08-14 | 2009-02-18 | 西北工业大学 | Flexible bend pipe core mould |
| JP2009113098A (en) * | 2007-11-08 | 2009-05-28 | Comco Corp | Mandrel for bending |
| CN202021249U (en) * | 2010-12-19 | 2011-11-02 | 富奥汽车零部件股份有限公司 | Hydraulically-driven core-pulling punch-forming device for pipes |
| CN202539305U (en) * | 2012-02-28 | 2012-11-21 | 江阴中南重工股份有限公司 | Internal mandrel for bent pipe |
Non-Patent Citations (1)
| Title |
|---|
| 申世军等: "铝合金大口径薄壁管数控弯曲实验研究", 《塑性工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553397A (en) * | 2014-11-28 | 2015-04-29 | 芜湖贝斯特新能源开发有限公司 | Stamping mold and stamping device |
| CN110560530A (en) * | 2019-10-12 | 2019-12-13 | 合肥工业大学 | Variable-diameter crease-resistant core rod for bent pipe |
| CN110560530B (en) * | 2019-10-12 | 2020-12-22 | 合肥工业大学 | Variable-diameter crease-resistant core rod for bent pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102581092B (en) | 2013-12-04 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160826 Address after: Changshan town 214429 high tech Industrial Development Zone, Jiangsu city of Jiangyin Province as Bridge No. 3 in the South South Group Patentee after: The Central-South heavy industry Co., Ltd in Jiangyin Address before: 214437 No. 788 Jin Shan Road, Binjiang Development Zone, Wuxi, Jiangsu, Jiangyin Patentee before: Jiangyin Zhongnan Heavy Industry Furnishment Co., Ltd. |