CN1030436C - Shaping device for cold bend pipe with small radius of curvature and its shaping process - Google Patents
Shaping device for cold bend pipe with small radius of curvature and its shaping process Download PDFInfo
- Publication number
- CN1030436C CN1030436C CN 92106018 CN92106018A CN1030436C CN 1030436 C CN1030436 C CN 1030436C CN 92106018 CN92106018 CN 92106018 CN 92106018 A CN92106018 A CN 92106018A CN 1030436 C CN1030436 C CN 1030436C
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- China
- Prior art keywords
- push rod
- plug
- hinge
- mandrel bar
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- 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.)
- Expired - Fee Related
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- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The present invention relates to a forming device for a cold-pushed bent pipe with small curvature and small radius and a method thereof. The present invention adopts a processing method that a hinge mandrel bar is put in an original pipe blank, and a push rod is separated with the segments of the hinge mandrel bar. The device of the present invention adopts a pushing head going through the push rod for connecting with one segment of the mandrel bar to be butted with 2 to 4 segments of the hinge mandrel bar in the original pipe blank, so the hinge mandrel bar goes through a guide sleeve and can be bent freely in a curved channel. Compared with the prior art, the present invention has the characteristics of high processing efficiency, little abrasion on the segments of the hinge mandrel bar, and convenient maintenance; in addition, the segments of the hinge mandrel bar are easy to manufacture or change, and an angle fitting less than 1.5 inches can be processed.
Description
The present invention relates to a kind of bending and molding device, particularly a kind of cold bend pipe with small radius of curvature shaped device that is used for.
According to the described content of Chinese patent 87210664.0 utility models:, provide a kind of hinge plug and back-stop mechanism with push rod to the cold bend pipe with small radius of curvature shaped device.
Intercalation in addition Boeing Co. bend pipe handbook is also mentioned the cold type device that pushes into for crooked small curvature radius or little light-wall pipe, is the multi-ball type mandrel that adopts a kind of hinge joint with ball-shaped to be connected, and is connected with push rod.
Above-mentioned two kinds have the hinge plug that push rod connects, and the subproblem of its existence is that working (machining) efficiency is low, can not process elbow below 1.5 inches, and the hinge plug is fragile, and especially at the position of cutting somebody's hair, maintenance is inconvenient again, has only and changes the hinge plug that push rod connected.In order to overcome the problems referred to above, the present invention has designed the processing mode of a kind of push rod and hinge plug butt splice.Solve the small-bore cold method that pushes into the type elbow, promptly improved working (machining) efficiency, made parts not easy to wear, made easy to maintenancely again, made plug joint easily.
It is not easy to wear to have the purpose of this invention is to provide a kind of plug parts that make, and has solved the small-bore cold type elbow that pushes into, and improves the cold bend pipe with small radius of curvature shaped device of working (machining) efficiency.
The present invention adopts such method to realize: the cold bend pipe with small radius of curvature shaped device is to adopt the circulation of hinge plug joint to be placed in the former pipe, the processing pushing processing method of push rod portion and hinge plug joint butt splice.Its device is the whole workpiece butt joint that employing has the inner tube of a tyre and each semicircle of cover tire outside the bend pipe of bend pipe inboard, constitute the bending channel of the required curvature of bend pipe, dock fairlead in outer rim with an end of cover tire simultaneously near the inner tube of a tyre, connect aforesaid bending channel, constitute former pipe introduction channel, on the axial line in bending channel, by hinge plug and push rod is two set of pieces separated from one another, the top connection-core clavus of push rod docks 2 or 4 joint hinge plug effects in the former pipe, make the hinge plug in fairlead by and bending is freely in bending channel.
The inner tube of a tyre is a rotary state when promoting hinge plug and former pipe.
Compared with the prior art the present invention has the working (machining) efficiency height, and the hinge plug is not easy to wear, characteristics easy to maintenance, and change or make the hinge plug easily, can process elbow below 1.5 inches, guarantee the requirement of machining accuracy.
The embodiment of the invention is provided by the following drawings.
Fig. 1 is the general structure sectional structure schematic diagram of cold bend pipe with small radius of curvature shaped device of the present invention.
Fig. 2 is the enforcement state diagram of Fig. 1 bending and molding device of the present invention.
Fig. 3 is that the push rod part of Fig. 1 bending and molding device of the present invention connects top sectional structure schematic diagram.
Fig. 4 is the cross-sectional view of the former pipe of Fig. 1 bending and molding device of the present invention.
Below in conjunction with accompanying drawing embodiments of the invention are done with further instruction:
See shown in Figure 1: the cold bend pipe with small radius of curvature shaped device is to adopt 1 circulation of hinge plug to be placed in the former pipe 14, the top 6 on the push rod 12 and plug save 9 be connected and with the pushing processing method of hinge plug 1 butt splice.Its device be in adopting revolution tire axle 4 fixing in revolution tires 5 and constitute the bending channel of bend pipes with outer fixed mould tire 10, at one of an end of bending channel butt joint fairlead 11 with the bending channel concentric, in fairlead 11, has a push rod 12, fore-end at push rod 12 has by axle 7 tops that connected 6, top, on top 6, has the plug joint 9 that connects by carrier bar 3, carrier bar 3 is to be fixed on the top 6 with 2 on carrier bar axle to save on 9 with plug, be connected to 2 or 4 hinge plugs 1 relatively with plug joint 9, hinge plug 1 is to save the hinged element group that forms by carrier bar 3 by carrier bar axle 2 and a pair of plug; Can make former pipe 14 bend to the elbow of required radius of curvature like this.
See shown in Figure 4: processing cold push away small curvature radius bend pipe before, at first former pipe material is processed into former pipe 14, two base angles and does not wait, front end α is 28 °, rear end α
1It is 41 °.
See shown in Figure 3: the top 13 that connects on the push rod 12.Its front end forms the shape of plug joint 9, and the top of push rod 12 front ends is an overall structure, and column structure top 13 can replace plug joint 9, and top 13 is two kinds of different versions with top 6.Its working (machining) efficiency when push-making angle fitting is improved.
See shown in Figure 2: the duty of cold bend pipe with small radius of curvature shaped device.During pushing, one cover hinge plug 1 is put into former pipe 14, put into the fairlead 11 of mould then together again, start hydraulic mandril 12, promote top 6 and plug joint 9, advance in the former pipe 14, and continuation promotes former pipe 14 and a cover hinge plug 1 together enters in the bend pipe passage of mould, 90 ° of elbows of forced shaping, after this start hydraulic push rod 12 drive tops 6 and plug joint 9 and get back to original position together, again a cover hinge plug 1 that is installed in another former pipe 14 is put into fairlead 11, start hydraulic mandril 12, promote top 6 and plug joint 9 and enter together in the former pipe 14, the front end of this former pipe 14 pushes up the rear end of molded elbow, push rod 12 continues ejections 6 and plug joint 9 advances, end when forcing pushing to be shaped to elbow the 2nd former pipe 14, previous elbow is pushed out the bending channel mould and sends in the complete machine, again 1 release of hinge plug is returned to push machine and puts into former pipe 14, recycle, the rest may be inferred in later pushing processing.
Claims (3)
1, a kind of cold bend pipe with small radius of curvature shaped device, comprise by the common bending channel that constitutes of revolution tire (5) and outer fixed mould tire (10) in being fixed on, dock with it and the fairlead (11) of concentric at bending channel one end, be positioned at the push rod (12) of fairlead (11), push rod can push former pipe (14) with the hinge plug (1) that is arranged in its place ahead, it is characterized in that: hinge plug (1) is two set of pieces separated from one another with push rod 12.
2, by the described bending and molding device of claim 1, it is characterized in that: push rod the place ahead is connected with a top (6), and it links to each other with another plug joint (9) by carrier bar (3), latter the place ahead has and reclines with it but unconnected 1 or 2 group of hinge plug (1), and every group of hinge plug is by forming with carrier bar (3) a pair of plug joint connected to one another (9).
3, by the described bending and molding device of claim 1, it is characterized in that: the push rod front end is connected with a top (13), and its front end forms the shape of plug joint (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106018 CN1030436C (en) | 1992-01-15 | 1992-01-15 | Shaping device for cold bend pipe with small radius of curvature and its shaping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106018 CN1030436C (en) | 1992-01-15 | 1992-01-15 | Shaping device for cold bend pipe with small radius of curvature and its shaping process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1063062A CN1063062A (en) | 1992-07-29 |
| CN1030436C true CN1030436C (en) | 1995-12-06 |
Family
ID=4941718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106018 Expired - Fee Related CN1030436C (en) | 1992-01-15 | 1992-01-15 | Shaping device for cold bend pipe with small radius of curvature and its shaping process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030436C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453875C (en) * | 2004-06-02 | 2009-01-21 | 俞廷标 | Method for processing stainless steel/carbon steel composite pipe |
| CN102039336A (en) * | 2010-11-23 | 2011-05-04 | 凌云工业股份有限公司 | Core for arcing and processing of bumper |
| CN105689477A (en) * | 2016-02-16 | 2016-06-22 | 湖州久立管件有限公司 | Bending process for aluminum alloy elbow |
| CN106734438B (en) * | 2017-01-13 | 2018-05-29 | 南昌航空大学 | A kind of small curvature bending radius L type thin-wall aluminum alloy bend pipe of band pushes away o ing method |
| CN107520299B (en) * | 2017-09-12 | 2019-08-06 | 株洲博雅实业有限公司 | A kind of small curvature bending forming auxiliary machining device and assistance processing method |
| CN110756633B (en) * | 2018-07-25 | 2024-03-29 | 丛华 | Combined mold core structure for cold-pushing forming straight pipe elbow |
| CN110756632B (en) * | 2018-07-25 | 2024-04-12 | 丛华 | Cold forming equipment with combined mold core structure and straight pipe elbow |
| CN110756634B (en) * | 2018-07-25 | 2021-07-27 | 丛华 | Cold-push forming method with straight pipe elbow |
| CN110270612A (en) * | 2019-06-28 | 2019-09-24 | 燕山大学 | A kind of core unit for shape bending |
| JP7036859B2 (en) * | 2020-04-13 | 2022-03-15 | フタバ産業株式会社 | Curved tube manufacturing equipment and curved tube manufacturing method |
| CN113976696B (en) * | 2021-10-21 | 2023-09-12 | 保隆(安徽)汽车配件有限公司 | Pipe bending device |
| CN117644140B (en) * | 2024-01-29 | 2024-04-05 | 沧州恒鑫高压管件有限公司 | High-pressure-resistant elbow forming device and forming process for thermal power station |
-
1992
- 1992-01-15 CN CN 92106018 patent/CN1030436C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1063062A (en) | 1992-07-29 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |