CN202539305U - Internal mandrel for bent pipe - Google Patents
Internal mandrel for bent pipe Download PDFInfo
- Publication number
- CN202539305U CN202539305U CN201220067642XU CN201220067642U CN202539305U CN 202539305 U CN202539305 U CN 202539305U CN 201220067642X U CN201220067642X U CN 201220067642XU CN 201220067642 U CN201220067642 U CN 201220067642U CN 202539305 U CN202539305 U CN 202539305U
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- Prior art keywords
- ball
- arc
- support disk
- core
- disk
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Abstract
The utility model relates to an internal mandrel for a bent pipe. The internal mandrel for the bent pipe is characterized by comprising a support disk, a spherical arc disk, a tension ball, rotating columns, upper pin shafts, lower pin shafts, upper springs and lower springs, wherein two sides of the support disk are respectively provided with an arc-shaped groove; a plurality of grooves are arranged equidistantly on the circumference of the support disk; the tension 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 tension ball is installed in the arc-shaped grooves of the support disk; the spherical arc disk covers the outside of the arc-shaped grooves of the support disk; the grooves on the circumference of the support disk are respectively provided with one rotating column; a concave hole is arranged above each rotating column; the upper springs are arranged in the concave holes; the upper pin shafts are arranged in the concave hole at the outside ends of the upper springs; one through hole vertical to the concave hole is arranged below each rotating column; the lower springs are arranged in the through holes; and the lower pin shafts are arranged in the through holes on two ends of the lower springs. The internal mandrel for the bent pipe has the advantages of uniform supporting force, simple and rapid de-moulding program, capability of reducing labor intensity of workers and short de-moulding time.
Description
Technical field
The utility model relates to a kind of interior core, relates in particular to a kind of bend pipe and uses 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 utility model purpose 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.
The technology contents of the utility model 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 utility model is: after being placed on the utility model 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 the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model.
Fig. 3 is the use sketch map of the utility model.
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.
The operation principle of the utility model 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 |
|---|---|---|---|
| CN201220067642XU CN202539305U (en) | 2012-02-28 | 2012-02-28 | Internal mandrel for bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220067642XU CN202539305U (en) | 2012-02-28 | 2012-02-28 | Internal mandrel for bent pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202539305U true CN202539305U (en) | 2012-11-21 |
Family
ID=47159996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220067642XU Withdrawn - After Issue CN202539305U (en) | 2012-02-28 | 2012-02-28 | Internal mandrel for bent pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202539305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581092A (en) * | 2012-02-28 | 2012-07-18 | 江阴中南重工股份有限公司 | Inner core die for bent pipe |
| CN108296330A (en) * | 2018-01-18 | 2018-07-20 | 浙江大学 | A kind of diameter adjustable core clavus and mandrel structure for thin-wall pipe bending forming |
-
2012
- 2012-02-28 CN CN201220067642XU patent/CN202539305U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581092A (en) * | 2012-02-28 | 2012-07-18 | 江阴中南重工股份有限公司 | Inner core die for bent pipe |
| CN102581092B (en) * | 2012-02-28 | 2013-12-04 | 江阴中南重工股份有限公司 | Inner core die for bent pipe |
| CN108296330A (en) * | 2018-01-18 | 2018-07-20 | 浙江大学 | A kind of diameter adjustable core clavus and mandrel structure for thin-wall pipe bending forming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |