CN113102579A - Small-radius bent pipe manufacturing device and using method thereof - Google Patents
Small-radius bent pipe manufacturing device and using method thereof Download PDFInfo
- Publication number
- CN113102579A CN113102579A CN202110380206.1A CN202110380206A CN113102579A CN 113102579 A CN113102579 A CN 113102579A CN 202110380206 A CN202110380206 A CN 202110380206A CN 113102579 A CN113102579 A CN 113102579A
- Authority
- CN
- China
- Prior art keywords
- movable
- pull rod
- steel pipe
- small
- mold
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
- B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a small-radius bent pipe manufacturing device which comprises a movable outer die, a movable inner core die, a pressure ejector rod, a wheel band and a shaping die, wherein the movable outer die is sleeved outside a steel pipe to be bent and is connected with an outer die guide sleeve to be fixed on a workbench with a pulley clamp; the movable inner core mold is plugged into the steel pipe; the pressure ejector rod is sleeved outside the steel pipe, and an inner push-pull rod arranged inside the pressure ejector rod props against a movable inner core mold inside the steel pipe; one end of the wheel band is electrically connected with the arranged speed reducer, and the other end of the wheel band moves along with the steel pipe and is in close fit with the movable outer die and the movable inner core die; the shaping die is assembled on the workbench and is positioned at the rear process position of the tire. The manufacturing device for the small-radius bent pipe can be formed at one time, particularly, for the sharp bent pipe for the heating furnace, the defects of thinning of the outer arc and thickening of the inner arc of the bent pipe are overcome, the thickness of the wall of the bent raw material does not need to be increased, and the welding, shooting and mounting difficulties are greatly reduced.
Description
Technical Field
The invention relates to the technical field of small-radius elbow pipe manufacturing, in particular to a small-radius elbow pipe manufacturing device and a using method thereof.
Background
Extensive research has been conducted on forming methods for bending small radius elbows into small radius elbows, wherein small radius elbows refer to elbows having a relatively small bending radius that is close to or less than 1D.
At present, in large-scale petroleum and chemical engineering projects in China, national standard elbows and American standard elbows reach 90% (1.5D, 1D), large-radius elbows can be formed and bent in China in a cold forming mode, the wall thickness is common and thick, the traditional elbows cannot be processed with straight pipes, the straight pipes are respectively welded at two ends of the 90-degree elbow after the 90-degree elbow is only subjected to hot pushing, and the hot pushing elbow can be finished only by using a steel pipe with a small caliber to enlarge the caliber. The process has high cost and large energy consumption for plastic forming, the used lubricant pollutes the combustion environment, meanwhile, a large workload is added for engineering installation, and the shooting and the heat treatment are carried out after welding, which has influence on the performance, especially for the sharp-bent elbow of the hot-push stainless steel heating furnace, the labor intensity is very high, the danger is very high, the installation and shooting are very difficult due to the small radius, and the cold machining has the defects of the thinning of the outer arc and the thickening of the inner arc of the elbow.
Disclosure of Invention
The invention aims to solve the technical problems to a certain extent, and provides a small-radius bent pipe manufacturing device which can be formed at one time, particularly, for a sharp bent pipe for a heating furnace, the defects of thinning of an outer arc and thickening of an inner arc of the bent pipe are overcome, the wall thickness of a bent raw material is not required to be increased, and the welding, shooting and mounting difficulties are greatly reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: the small-radius bent pipe manufacturing device comprises a movable outer die, a movable inner core die, a pressure ejector rod, a wheel band and a shaping die, wherein the movable outer die is sleeved outside a steel pipe to be bent and is connected with an outer die guide sleeve to be fixed on a workbench with a pulley clamp; the movable inner core mold is plugged into the steel pipe and connected with the main oil cylinder; the pressure ejector rod is sleeved outside the steel pipe and moves along with the bent pipe to abut against an outer mold guide sleeve linked with the movable outer mold, and an inner push-pull rod arranged inside the pressure ejector rod abuts against a movable inner core mold inside the steel pipe; one end of the wheel band is electrically connected with the arranged speed reducer, and the other end of the wheel band moves along with the steel pipe and is in close fit with the movable outer die and the movable inner core die; the shaping die is assembled on the workbench and is positioned at the rear process position of the tire.
Preferably, the movable outer die consists of a plurality of outer die movable sections which are connected and equally divide the outer arc expansion arc length of the bent pipe part of the steel pipe.
Preferably, the movable outer die is provided with five outer die movable sections, each outer die movable section is provided with a semicircular arc, and the expansion arc length of the outer arc of the bent pipe is divided into five equal parts.
Preferably, the movable inner core mold consists of a plurality of inner mold movable sections which are connected and equally divide the inner arc expansion arc length of the bent pipe part of the steel pipe.
Preferably, one end of the movable inner core mold is connected with a first pull rod through a universal joint, the rear end of the first pull rod is connected with a second pull rod, the second pull rod is connected with an inner push-pull rod through the second pull rod, and the inner push-pull rod is connected with a main oil cylinder.
Preferably, the shaping mold consists of an upper shaping mold and a lower shaping mold, and a cavity matched with the small-radius bent pipe is formed between the upper shaping mold and the lower shaping mold.
Preferably, the movable outer die is connected with a dovetail groove arranged on the outer die guide sleeve through a T-shaped groove.
A method for using a small-radius elbow manufacturing device comprises the small-radius elbow manufacturing device, and specifically comprises the following steps:
s1, assembling a movable outer die with an outer die guide sleeve on a workbench, and assembling a wheel rim on a speed reducer;
s2, assembling the raw materials on a movable external mold, testing the inner diameter of the steel pipe, adjusting the gap between the inner wall of the steel pipe and a movable internal core mold, simultaneously connecting the movable internal core mold with a first pull rod, then assembling the movable internal core mold into the steel pipe, and adjusting the bending distance between the movable internal core mold and the steel pipe;
s3, calculating the length of the material for the bent pipe, accurately calculating the shortened increased thickness of the inner arc, and polishing the inner arc from the radius of 180 degrees of the inner arc of the central line of the bent pipe to the bent length;
s4, moving the front straight section of the steel pipe to the position of a bending starting point to enable the first outer mold movable section of the movable outer mold to be clamped with a wheel rim below the speed reducer;
s5, connecting the movable inner core mold with a first pull rod, connecting the first pull rod with a second pull rod, connecting the second pull rod with an inner push-pull rod, and connecting the inner push-pull rod with a main oil cylinder, so as to adjust the distance from the movable inner core mold to a bending starting point of the bent pipe;
s6, the propulsion speed of the bent pipe is adjusted, the speed reducer is kept consistent with the propulsion speed, and the bent pipe is bent.
A method for manufacturing a small-radius bent pipe comprises a method for using the small-radius bent pipe manufacturing device, and the manufacturing method comprises the following steps:
s100, enabling a pressure ejector rod to push against an outer mold guide sleeve when a pushing machine works, enabling an inner push-pull rod to push against a movable inner core mold through matching with a first pull rod and a second pull rod, and simultaneously ensuring that the inner push-pull rod simultaneously moves at a speed of 5-6mm per minute;
s200, when the angle is 45 degrees, the speed reducer working wheel rim starts to bend the bent pipe;
s300, when the bending is finished to 90 degrees, stopping the second pull rod to run, and completing the bending;
s400, opening the front clamping device, enabling the speed reducer to rotate reversely, and enabling the outer die guide sleeve to return to a parallel position;
s500, the first pull rod moves forwards simultaneously, the shaping die automatically extends upwards, and the bent part of the bent pipe is shaped;
s600, drawing the first pull rod back in a return stroke, and drawing out the movable inner core mold;
and S700, bending the small-radius bent pipe by the shaping die through the return stroke of the press.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the mode that can take the straight tube is bent the system processing to the steel pipe of any material, 0.75D can be accomplished to return bend minimum radius, wherein the small radius includes (1.5D, 1D, 0.75D), and the manufacturing of small radius return bend can one shot forming, especially to the sharp bend elbow of heating furnace, the defect of return bend outer arc attenuate, inner arc bodiness has been solved, welding has been reduced, the piece is clapped, the installation degree of difficulty, and process the return bend through making the modular mode, manufacturing cost practices thrift 40%, engineering installation cost practices thrift 30%, the progress is 40% in advance, the usability of small radius return bend has been improved greatly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
In the drawings:
FIG. 1 is an assembly view of a small radius elbow manufacturing apparatus according to the present invention;
FIG. 2 is an assembly view of the movable core mold of the present invention;
FIG. 3 is an assembly view of the pressure ram of the present invention;
FIG. 4 is a view of the configuration of the reforming mold according to the present invention;
FIG. 5 is a structural view of a movable external mold according to the present invention;
FIG. 6 is a view showing the construction of the tire of the present invention;
FIG. 7 is a flow chart of a method for manufacturing a small-radius elbow according to the present invention.
Reference numerals: 1-moving an external mold; 2-moving the inner core mould; 3-pressure ejector rod; 4-a wheel band; 5-external mold clamping head; 6-steel pipe; 7-outer mold guide sleeve; 8-inner push-pull rod; 9-a first pull rod; 10-a second pull rod; 11-cavity.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 1-6, the invention provides a small-radius elbow manufacturing device and a use method thereof, the small-radius elbow manufacturing device comprises a movable external mold 1, a movable internal core mold 2, a pressure ejector rod 3, a wheel hoop 4 and a shaping mold, wherein an external mold chuck 5 with a fixed position is further arranged outside the movable external mold 1, is sleeved outside a steel pipe 6 to be bent, and is connected with an external mold guide sleeve 7 and fixed on a workbench with a pulley clamp; the movable inner core mold 2 is plugged into the steel pipe 6 and is connected with the main oil cylinder; the pressure ejector rod is sleeved outside the steel pipe 6 and moves along with the steel pipe 6 to abut against an outer mold guide sleeve 7 linked with the movable outer mold 1, and an inner push-pull rod 8 arranged inside the pressure ejector rod 3 abuts against the movable inner core mold 2 inside the steel pipe 6; one end of the tire 4 is electrically connected with a speed reducer, the other end of the tire moves along with the steel pipe 6 to be in press fit with the movable outer mold 1 and the movable inner core mold 2, and a tire chuck at a fixed position is arranged outside the tire 4; the shaping die is assembled on a workbench and is positioned at a process position behind the tire 4.
This embodiment can take the mode of straight tube to bend the system processing to the steel pipe of any material, 0.75D can be accomplished to return bend minimum radius, wherein the small radius includes (1.5D, 1D, 0.75D), and the manufacturing of small radius return bend can one shot forming, especially to the sharp bend elbow of heating furnace, the defect of return bend outer arc attenuate, inner arc bodiness has been solved, welding has been reduced, the piece is clapped, the installation degree of difficulty, and process the return bend through making the modular mode, manufacturing cost practices thrift 40%, engineering installation cost practices thrift 30%, the progress is 40% in advance, the usability of small radius return bend has been improved greatly.
The movable external mold 1 consists of a plurality of external mold movable sections which are connected and equally divide the outer arc expansion arc length of the bent pipe part of the steel pipe; specifically, the movable outer die 1 is provided with five outer die movable sections, each outer die movable section is provided with a semicircular arc, and the arc length of the outer arc of the bent pipe part of the steel pipe 6 is divided into five equal parts.
Further, the movable inner core mold 2 is composed of a plurality of inner mold movable sections which are connected and equally divide the inner arc expansion arc length of the bent pipe part of the steel pipe 6.
The movable outer die 1 and the movable inner core die 2 are both composed of a plurality of connected movable sections, and can achieve better bending effect when being assembled on a steel pipe and interacted with the wheel rim 4, so that the bending strength is ensured.
As shown in fig. 2, one end of the movable inner core mold 2 is connected to a first pull rod 9 through a universal joint, a second pull rod 10 is connected to the rear end of the first pull rod 9 and is connected to an inner push-pull rod 8 through the second pull rod 10, and the inner push-pull rod 8 is connected to a main oil cylinder.
The shaping mold comprises an upper shaping mold and a lower shaping mold, and a cavity 11 matched with the small-radius bent pipe is formed between the inner parts of the upper shaping mold and the lower shaping mold.
The movable outer die 1 is connected with a dovetail groove arranged on the outer die guide sleeve 7 through a T-shaped groove.
A method for using a small-radius elbow manufacturing device comprises the small-radius elbow manufacturing device, and specifically comprises the following steps:
s1, assembling a movable outer die 1 with an outer die guide sleeve 7 on a workbench, and assembling a wheel rim 4 on a speed reducer;
s2, assembling the raw materials on the movable external mold 1, testing the inner diameter of the steel pipe, and adjusting the gap between the inner wall of the steel pipe 6 and the movable internal core mold 2, wherein the gap is not more than 1.5mm, and meanwhile, connecting the movable internal core mold 2 with a first pull rod 9, then assembling the movable internal core mold 2 into the steel pipe 6 and adjusting the bending distance between the movable internal core mold 2 and the steel pipe 6;
s3, calculating the length of the material for the bent pipe, accurately calculating the shortened increased thickness of the inner arc, and polishing the inner arc from the radius of 180 degrees of the inner arc of the central line of the bent pipe to the bent length;
s4, moving the front straight section of the steel pipe 6 to the position of a bending starting point to enable the first outer mold movable section of the movable outer mold 1 to be clamped with a wheel rim 4 below the speed reducer;
s5, connecting the movable inner core mold 2 with a first pull rod 9, connecting the first pull rod 9 with a second pull rod 10, connecting the second pull rod 10 with an inner push-pull rod 8, and connecting the inner push-pull rod 8 with a main oil cylinder, so that the distance from the movable inner core mold 2 to a bending starting point of the bent pipe is adjusted;
s6, the propulsion speed of the bent pipe is adjusted, the speed reducer is kept consistent with the propulsion speed, and the bent pipe is bent.
A method for manufacturing a small-radius bent pipe comprises a method for using the small-radius bent pipe manufacturing device, and the manufacturing method comprises the following steps:
s100, the pushing machine works to enable the pressure ejector rod 3 to push against the outer mold guide sleeve 7, the inner push-pull rod 8 pushes against the movable inner core mold 2 through matching with the first pull rod 9 and the second pull rod 10, and meanwhile, the simultaneous advancing is ensured, and the advancing speed is 5-6mm per minute;
s200, when the angle is 45 degrees, the speed reducer working wheel rim 4 starts to bend the bent pipe;
s300, when the bending is finished to 90 degrees, the second pull rod 10 stops running and bending is finished;
s400, opening the front clamping device, enabling the speed reducer to rotate reversely, and enabling the outer die guide sleeve 7 to return to a parallel position;
s500, the first pull rod 9 moves forwards simultaneously, the shaping die automatically extends upwards, and the bent part of the bent pipe is shaped;
s600, drawing the movable inner core mold 2 out by backward drawing of the first pull rod 9;
and S700, bending the small-radius bent pipe by the shaping die through the return stroke of the press.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (9)
1. A small-radius elbow manufacturing device is characterized by comprising:
the movable outer die is sleeved outside the steel pipe to be bent and is connected with an outer die guide sleeve to be fixed on a workbench with a pulley clamp;
the movable inner core mold is plugged into the steel pipe;
the pressure ejector rod is sleeved outside the steel pipe, and an inner push-pull rod arranged inside the pressure ejector rod butts against a movable inner core mold inside the steel pipe;
one end of the wheel band is electrically connected with the speed reducer, and the other end of the wheel band moves along with the steel pipe and is in close fit with the movable outer die and the movable inner core die;
and the shaping mold is assembled on the workbench and is positioned at the rear process position of the tire.
2. The small-radius elbow manufacturing apparatus according to claim 1, wherein: the movable outer die consists of a plurality of outer die movable sections which are connected and equally divide the outer arc expansion arc length of the bent pipe part of the steel pipe.
3. The small-radius elbow manufacturing apparatus according to claim 2, wherein: the movable outer die is provided with five outer die movable sections, each outer die movable section is provided with a semicircular arc, and the expansion arc length of the outer arc of the bent pipe is divided into five equal parts.
4. The small-radius elbow manufacturing apparatus according to claim 1, wherein: the movable inner core mold consists of a plurality of inner mold movable sections which are connected and equally divide the inner arc expansion arc length of the bent pipe part of the steel pipe.
5. The small-radius elbow manufacturing apparatus according to claim 4, wherein: one end of the movable inner core die is connected with a first pull rod through a universal joint, the rear end of the first pull rod is connected with a second pull rod, the second pull rod is connected with an inner push-pull rod through the second pull rod, and the inner push-pull rod is connected with a main oil cylinder.
6. The small-radius elbow manufacturing apparatus according to claim 1, wherein: the shaping mold consists of an upper shaping mold and a lower shaping mold, and a cavity matched with the small-radius bent pipe is formed between the inner parts of the upper shaping mold and the lower shaping mold.
7. The small-radius elbow manufacturing apparatus according to claim 1, wherein: the movable outer die is connected with a dovetail groove arranged on the outer die guide sleeve through a T-shaped groove.
8. A method for using a small-radius elbow manufacturing device, which is characterized by comprising the small-radius elbow manufacturing device of claims 1-7, and the method specifically comprises the following steps:
s1, assembling a movable outer die with an outer die guide sleeve on a workbench, and assembling a wheel rim on a speed reducer;
s2, assembling the raw materials on a movable external mold, testing the inner diameter of the steel pipe, adjusting the gap between the inner wall of the steel pipe and a movable internal core mold, simultaneously connecting the movable internal core mold with a first pull rod, then assembling the movable internal core mold into the steel pipe, and adjusting the bending distance between the movable internal core mold and the steel pipe;
s3, calculating the length of the material for the bent pipe, accurately calculating the shortened increased thickness of the inner arc, and polishing the inner arc from the radius of 180 degrees of the inner arc of the central line of the bent pipe to the bent length;
s4, moving the front straight section of the steel pipe to the position of a bending starting point to enable the first outer mold movable section of the movable outer mold to be clamped with a wheel rim below the speed reducer;
s5, connecting the movable inner core mold with a first pull rod, connecting the first pull rod with a second pull rod, connecting the second pull rod with an inner push-pull rod, and connecting the inner push-pull rod with a main oil cylinder, so as to adjust the distance from the movable inner core mold to a bending starting point of the bent pipe;
s6, the propulsion speed of the bent pipe is adjusted, the speed reducer is kept consistent with the propulsion speed, and the bent pipe is bent.
9. A method for manufacturing a small-radius bent pipe, comprising the method for using the small-radius bent pipe manufacturing apparatus according to claim 8, the method comprising the steps of:
s100, enabling a pressure ejector rod to push against an outer mold guide sleeve when a pushing machine works, enabling an inner push-pull rod to push against a movable inner core mold through matching with a first pull rod and a second pull rod, and simultaneously ensuring that the inner push-pull rod simultaneously moves at a speed of 5-6mm per minute;
s200, when the angle is 45 degrees, the speed reducer working wheel rim starts to bend the bent pipe;
s300, when the bending is finished to 90 degrees, stopping the second pull rod to run, and completing the bending;
s400, opening the front clamping device, enabling the speed reducer to rotate reversely, and enabling the outer die guide sleeve to return to a parallel position;
s500, the first pull rod moves forwards simultaneously, the shaping die automatically extends upwards, and the bent part of the bent pipe is shaped;
s600, drawing the first pull rod back in a return stroke, and drawing out the movable inner core mold;
and S700, bending the small-radius bent pipe by the shaping die through the return stroke of the press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380206.1A CN113102579B (en) | 2021-04-09 | 2021-04-09 | Small-radius bent pipe manufacturing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380206.1A CN113102579B (en) | 2021-04-09 | 2021-04-09 | Small-radius bent pipe manufacturing device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113102579A true CN113102579A (en) | 2021-07-13 |
| CN113102579B CN113102579B (en) | 2022-11-22 |
Family
ID=76714721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110380206.1A Active CN113102579B (en) | 2021-04-09 | 2021-04-09 | Small-radius bent pipe manufacturing device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113102579B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6189354B1 (en) * | 1997-04-25 | 2001-02-20 | Suban Ag | Method and modular-multistation device for folding profiles |
| JP2006326637A (en) * | 2005-05-26 | 2006-12-07 | Jfe Steel Kk | Pipe bending machine and pipe bending method |
| WO2014108589A1 (en) * | 2013-01-10 | 2014-07-17 | Universidad De La Rioja - Otri | Device for improving the bending of tubes |
| WO2015190465A1 (en) * | 2014-06-10 | 2015-12-17 | 株式会社 三五 | Pipe-bending mold unit and pipe-bending machining device comprising said unit |
| CN105537342A (en) * | 2016-01-19 | 2016-05-04 | 西北工业大学 | Numerical control differential heating bending forming mould for titanium tube and method |
| CN205393257U (en) * | 2016-03-03 | 2016-07-27 | 河北亚都管道装备集团有限公司 | Elbow hot briquetting mould |
| JP2016182615A (en) * | 2015-03-25 | 2016-10-20 | 日新製鋼株式会社 | Rotational bending method and rotational bending device |
| CN207823651U (en) * | 2018-02-01 | 2018-09-07 | 开平力蒲卫浴有限公司 | A kind of core pulling tube bending jig mechanism |
| CN208555580U (en) * | 2018-07-25 | 2019-03-01 | 丛华 | Band straight tube elbow cold forming equipment with combined type mold core structure |
| CN110788179A (en) * | 2019-11-22 | 2020-02-14 | 保隆(安徽)汽车配件有限公司 | Forming method of oval bent pipe with complicated cross-section circumference change and pipe bending device |
-
2021
- 2021-04-09 CN CN202110380206.1A patent/CN113102579B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6189354B1 (en) * | 1997-04-25 | 2001-02-20 | Suban Ag | Method and modular-multistation device for folding profiles |
| JP2006326637A (en) * | 2005-05-26 | 2006-12-07 | Jfe Steel Kk | Pipe bending machine and pipe bending method |
| WO2014108589A1 (en) * | 2013-01-10 | 2014-07-17 | Universidad De La Rioja - Otri | Device for improving the bending of tubes |
| WO2015190465A1 (en) * | 2014-06-10 | 2015-12-17 | 株式会社 三五 | Pipe-bending mold unit and pipe-bending machining device comprising said unit |
| JP2016182615A (en) * | 2015-03-25 | 2016-10-20 | 日新製鋼株式会社 | Rotational bending method and rotational bending device |
| CN105537342A (en) * | 2016-01-19 | 2016-05-04 | 西北工业大学 | Numerical control differential heating bending forming mould for titanium tube and method |
| CN205393257U (en) * | 2016-03-03 | 2016-07-27 | 河北亚都管道装备集团有限公司 | Elbow hot briquetting mould |
| CN207823651U (en) * | 2018-02-01 | 2018-09-07 | 开平力蒲卫浴有限公司 | A kind of core pulling tube bending jig mechanism |
| CN208555580U (en) * | 2018-07-25 | 2019-03-01 | 丛华 | Band straight tube elbow cold forming equipment with combined type mold core structure |
| CN110788179A (en) * | 2019-11-22 | 2020-02-14 | 保隆(安徽)汽车配件有限公司 | Forming method of oval bent pipe with complicated cross-section circumference change and pipe bending device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113102579B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106270052B (en) | Long radius thin-wallconduit pushes away o ing method and device | |
| CN103722346A (en) | Corrosion-resistant metallurgical composite bimetal longitudinal submerged-arc welded steel pipe and method for manufacturing same | |
| CN102527848A (en) | Numerical-control heating bending die and forming method for large-diameter thin-wall pure titanium tube | |
| CN103658225B (en) | A kind of non-ferrous metal has seam elbow cooling formation technic | |
| CN101422860A (en) | Welded flange hot-rolling technique | |
| CN101234406A (en) | Method for manufacturing multiunit tube | |
| CN105583271A (en) | Solid solution-bending-aging forming device and method for vehicle body aluminum alloy pipe | |
| CN103769451A (en) | Minor radius bend forming method of ultrathin tubular product | |
| CN104607512A (en) | Bend forming method of large-angle pipeline with high precision, large pipe diameter and small bending diameter ratio | |
| CN103084427A (en) | Manufacturing method of hardenability steel tube | |
| CN113102579B (en) | Small-radius bent pipe manufacturing device and using method thereof | |
| CN105032980A (en) | Thin-wall titanium alloy complex variable-cross-section pipe forming method and application | |
| CN106583493B (en) | A kind of manufacturing method of large diameter steel pipe spigot-and-socket joint | |
| CN108758142B (en) | Main pipe reducing tee joint and production process thereof | |
| CN114309127B (en) | Inner wall surfacing small bending radius bent pipe and forming method thereof | |
| CN103604014A (en) | Reducing pipe fitting and manufacturing method thereof | |
| CN101767131A (en) | Hot-press molding method for thick-walled elbow without inner core | |
| CN102641917A (en) | Round setting technique for pipe end of large-size pipe fitting | |
| CN110405023A (en) | A kind of pipeline heat treatment process | |
| CN103753161B (en) | A kind of processing technology for the cooling heat(ing) coil on main equipment | |
| CN213495833U (en) | Pipe bending machine for cold-bending and forming of bent pipe with straight pipe sections at two ends | |
| CN214184664U (en) | Shaping tool for cold-bending forming of bent pipe with straight pipe sections at two ends | |
| CN104128404A (en) | Thin walled pipe bending technology and device | |
| CN101844290A (en) | Manufacturing process of close-wound wall sticking coil tubes for large-scale equipment | |
| CN210566912U (en) | Butt welding eccentric reducing elbow used at industrial pipeline turning position and production device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |