CN113083961B - Extrusion-free bending equipment for right-angle elbow of thin-wall steel pipe - Google Patents
Extrusion-free bending equipment for right-angle elbow of thin-wall steel pipe Download PDFInfo
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- CN113083961B CN113083961B CN202110375084.7A CN202110375084A CN113083961B CN 113083961 B CN113083961 B CN 113083961B CN 202110375084 A CN202110375084 A CN 202110375084A CN 113083961 B CN113083961 B CN 113083961B
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- steel pipe
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- sliding block
- bending
- arc
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- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
Abstract
The invention discloses extrusion-free bending equipment for a thin-wall steel pipe right-angle elbow, and belongs to the technical field of thin-wall steel pipe bending. The device comprises an equipment bottom plate, a motor, a driving gear and a driven gear which are in meshed transmission with each other, wherein a steel pipe shallow groove and a slider deep groove are formed in the equipment bottom plate, the steel pipe shallow groove consists of a linear steel pipe shallow groove and a fan-shaped steel pipe shallow groove, and the slider deep groove consists of a 90-degree arc slider deep groove and a linear slider deep groove; and a positioning action rod and a rotary force application rod are further arranged inside the thin-wall steel pipe, the first station for bending is arranged when the arc sliding block is positioned at the initial end position of the arc sliding block deep groove, the second station for bending is arranged when the arc sliding block is positioned at the intersection point position of the arc sliding block deep groove and the linear sliding block deep groove, and the third station for bending is arranged when the arc sliding block is positioned at the tail end position of the linear sliding block deep groove. The extrusion-free bending equipment has a simple and reasonable structure, applies bending force from the interior of the steel pipe, and can obviously reduce the bending extrusion deformation of the thin-wall steel pipe.
Description
Technical Field
The invention mainly relates to the technical field of thin-wall steel pipe bending, in particular to extrusion-free bending equipment for a right-angle elbow of a thin-wall steel pipe.
Background
The bending of metal workpieces, particularly hollow steel pipes, has wide application prospects in the engineering field, in the prior art, acting force is usually applied to the bending of the hollow steel pipes from the outside of the steel pipes, so that the hollow steel pipes can be bent, but the outer walls of the steel pipes are extruded and deformed due to the external force application to the bending of the thin-wall steel pipes; moreover, the thin-walled steel pipe is likely to be subjected to stress concentration at the right-angle bending position, thereby causing bending failure. Therefore, the bending equipment capable of bending the thin-walled steel pipe at right angles is designed, and the bending equipment has important application value.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the technical problems in the prior art, the extrusion-free bending equipment for the right-angle elbow of the thin-wall steel pipe, which is provided by the invention, has a simple and reasonable structure, can obviously reduce the bending extrusion deformation of the thin-wall steel pipe by applying bending force from the inside of the steel pipe, and has a better bending effect.
In order to solve the problems, the solution proposed by the invention is as follows: the utility model provides an extrusion-free bending equipment for thin-walled steel pipe elbow bend, includes the equipment bottom plate, install in motor, driven driving gear and driven gear of intermeshing on the equipment bottom plate.
The equipment bottom plate is provided with a steel pipe shallow slot and a slide block deep slotThe steel pipe shallow groove comprises a linear steel pipe shallow groove for accommodating the thin-wall steel pipe to be bent along the transverse direction and a groove for allowing the thin-wall steel pipe to be bent
The rotary fan-shaped steel pipe shallow groove is formed by
The arc-shaped arc slide block deep groove and the longitudinal linear slide block deep groove.
The driving gear install in on the output shaft of motor, driven gear rotate install in on the equipment bottom plate, rocker one end is fixed install in on the driven gear, the slip sleeve has been installed to the slip on the rocker.
The positioning device is characterized by also comprising a positioning action rod and a rotating force application rod which are sleeved in the thin-wall steel pipe, wherein the left end of the positioning action rod extends to the outside of the thin-wall steel pipe, and the right end of the rotating force application rod extends to the outside of the thin-wall steel pipe and is fixedly connected with an arc sliding block; the arc sliding block can only slide in the sliding block deep groove; the sliding sleeve is hinged with the arc sliding block.
The positioning action rod and the equipment bottom plate are provided with coaxial pin holes along the vertical direction, and pins are arranged in the pin holes.
The arc slider is located for bending the first station when the top position of arc slider deep groove, the arc slider is located the arc slider deep groove with for bending the second station when the nodical position of sharp slider deep groove, state the arc slider and be located for bending the third station when sharp slider deep groove end position.
Furthermore, an arc chamfer is arranged at the intersection of the straight-line-shaped steel pipe shallow groove and the fan-shaped steel pipe shallow groove.
Furthermore, the positioning action rod and the rotating force application rod are both solid cylinders, and the outer diameter of each solid cylinder is equal to the inner diameter of the thin-wall steel pipe.
Furthermore, when the arc slide block is positioned at a first bending station, the right end of the positioning action rod is connected with the arc slide blockThe distance between the left ends of the rotary force application rods is equal to the inner radius of the thin-wall steel pipe
。
Further, when the arc sliding block is positioned at a second bending station, the thin-wall steel pipe is just bent
。
Further, when the arc sliding block is located at a third bending station, the rotary force application rod just leaves the thin-wall steel pipe.
Furthermore, the driven gear is a semi-arc gear, and the rocker is fixedly arranged on a toothless smooth disk part of the driven gear.
Further, the radial length of the arc sliding block is equal to the width of the deep groove of the arc sliding block; the circumferential length of the arc sliding block is equal to the width of the deep groove of the linear sliding block.
Compared with the prior art, the invention has the following advantages and beneficial effects: the extrusion-free bending equipment for the right-angle elbow of the thin-wall steel pipe is provided with the positioning action rod, and can extrude the thin-wall steel pipe from the inside in the bending process, so that the thin-wall steel pipe does not slide relatively in the bending process, and the precision of the bending position is improved; in addition, the invention is also provided with a rotary force application rod which can apply bending moment to the thin-wall steel pipe from the inside, thereby eliminating the possibility of extrusion deformation of the thin-wall steel pipe due to external applied force in the bending process. Therefore, the extrusion-free bending equipment for the thin-wall steel pipe right-angle elbow has a simple and reasonable structure, can apply bending force from the interior of the steel pipe, can obviously reduce the bending extrusion deformation of the thin-wall steel pipe, and has a better bending effect.
Drawings
Fig. 1 is a schematic structural diagram of the extrusion-free bending equipment for the thin-walled steel pipe elbow bend of the invention.
Fig. 2 is a schematic diagram of the thin-wall steel pipe placed in the extrusion-free bending equipment for the right-angle bend of the thin-wall steel pipe of the invention.
Fig. 3 is a schematic diagram of the relative positions of the rotary force application rod and the arc slider in the thickness direction.
In the figure, 1 — equipment backplane; 10-pin holes; 11-straight steel pipe shallow slot; 12-fan-shaped steel tube shallow grooves; 13-arc slide block deep groove; 14-linear slider deep groove; 15-arc chamfering; 21-positioning action rod; 22-rotating the force application rod; 23-arc slide block; 3, a motor; 31-a drive gear; 32-a driven gear; 33-a rocker; 34-a sliding sleeve; 4-thin-wall steel pipe; i, bending a first station; II, bending a second station; III-bending a third station.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and fig. 2, the extrusion-free bending device for the thin-walled steel pipe elbow bend of the present invention comprises a device base plate 1, a motor 3 installed on the device base plate 1, a driving gear 31 and a driven gear 32 which are engaged with each other for transmission.
As shown in fig. 1 and 2, a steel pipe shallow groove and a slider deep groove are formed on an equipment bottom plate 1, and the steel pipe shallow groove comprises a straight line-shaped steel pipe shallow groove 11 for accommodating the thin-walled steel pipe 4 to be bent along the transverse direction and a groove for allowing the thin-walled steel pipe 4 to be bent
A rotary fan-shaped steel pipe shallow slot 12, a slide block deep slot is concentrically arranged with the fan-shaped steel pipe shallow slot 12 and is positioned at the outer side of the fan-shaped steel pipe shallow slot 12
The arc slider deep groove 13 and a straight slider deep groove 14 which is radially communicated with one end of the arc slider deep groove 13 and is longitudinally arranged. The depth of the slider deep groove is larger than that of the steel pipe shallow groove, so that the arc slider 23 can be positioned in two directions when sliding in the slider deep groove. The width of the straight steel pipe shallow groove 11 is equal to the outer diameter of the thin-wall steel pipe 4, and the straight steel pipe shallow groove and the thin-wall steel pipe 4 can be in clearance fit.
As shown in fig. 1, the driving gear 31 is mounted on the output shaft of the motor 3, the driven gear 32 is rotatably mounted on the device base plate 1, one end of the rocker 33 is fixedly mounted on the driven gear 32, the sliding sleeve 34 is slidably mounted on the rocker 33, and the sliding sleeve 34 can slide relative to the rocker 33.
As shown in fig. 1 and 3, the device further comprises a positioning action rod 21 and a rotary force application rod 22 which are sleeved inside the thin-wall steel tube 4, wherein the left end of the positioning action rod 21 extends to the outside of the thin-wall steel tube 4, and the right end of the rotary force application rod 22 extends to the outside of the thin-wall steel tube 4 and is fixedly connected with an arc slide block 23; the arc sliding block 23 can only slide in the sliding block deep groove; the sliding sleeve 34 is connected with the arc sliding block 23 in an articulated way. In the process of bending the thin-wall steel pipe 4 in the anticlockwise direction, the positioning action rod 21 applies pressure in the thin-wall steel pipe 4, so that the thin-wall steel pipe 4 is kept not to slide relatively in the bending process, and the accuracy of the bending position is improved.
As shown in fig. 1, the positioning operation rod 21 and the equipment base plate 1 are provided with pin holes 10 in the vertical direction, and pins are installed in the pin holes 10. After the pins are installed in the pin holes 10, the positioning action rod 21 is kept still relative to the equipment bottom plate 1.
As shown in fig. 1, when the arc slider 23 is located at the start end position of the arc slider deep groove 13, a first bending station I is provided, when the arc slider 23 is located at the intersection point position of the arc slider deep groove 13 and the linear slider deep groove 14, a second bending station II is provided, and when the arc slider 23 is located at the end position of the linear slider deep groove 14, a third bending station III is provided. The included angle between the first bending station I and the third bending station III of the rocker 33 is smaller than a right angle, so that the sliding dead point of the arc sliding block 23 is avoided, and the energy consumption of the motor 3 is reduced; when the rocker 33 is bent at the first station I, the sliding sleeve 34 is positioned on the left side of the driven gear 32.
Preferably, the straight steel pipe shallow grooves 11 and the fan-shaped steel pipe shallow grooves 12 are provided with arc chamfers 15 at the intersections, and the arc chamfers 15 can reduce stress concentration at the bending positions of the thin-walled steel pipes 4 and prevent extrusion deformation at the bending positions.
Preferably, the positioning action rod 21 and the rotating force application rod 22 are both solid cylinders, the outer diameter of the solid cylinders is equal to the inner diameter of the thin-walled steel tube 4, and the rotating force application rod 22 and the thin-walled steel tube 4 are in clearance fit.
Preferably, when the arc slide block 23 is at the first bending station I, the end surface of the left end of the force application rod 22 is flush with the central line of the linear slide block deep groove 14, and the distance between the right end of the positioning action rod 21 and the left end of the rotary force application rod 22 is equal to the inner radius of the thin-walled steel tube 4
And the thin-wall steel pipe 4 is prevented from being broken when being bent at a right angle.
Preferably, when the arc slide block 23 is at the second bending station II, the thin-walled steel tube 4 is just bent
。
Preferably, when the circular arc slide block 23 is in the third bending station III, the force application rod 22 is rotated to just leave the thin-walled steel tube 4.
Preferably, the driven gear 32 is a semi-circular gear, and the rocker 33 is fixedly mounted on a gearless smooth disk portion of the driven gear 32.
Preferably, the radial length of the circular arc slider 23 is equal to the width of the circular arc slider deep groove 13; the circumferential length of the circular arc slider 23 is equal to the width of the linear slider deep groove 14.
The working process of the invention is as follows:
firstly, placing a thin-wall steel pipe 4 in a linear steel pipe shallow groove 11 of an equipment bottom plate 1, and aligning the position to be bent to an arc chamfer 15;
then, the positioning action rod 21 and the rotary force application rod 22 are placed in the thin-wall steel tube 4 from two ends, and the positioning action rod 21 and the equipment bottom plate 1 are fixed by pins;
then, the motor 3 is started to rotate in the forward direction to drive the driving gear 31 and the driven gear 32 to rotate, and further drive the rocker 33 to rotate in the clockwise direction until the arc slide block 23 enters the second bending station II, and the thin-walled steel tube 4 is bent in a right angle;
then, the motor 3 continues to rotate in the forward direction, the force application rod 22 rotates to gradually slide out of the thin-wall steel pipe 4 until the arc sliding block 23 enters the third bending station III;
and finally, taking out the pin and the bent thin-wall steel tube 4, and reversely rotating the motor 3 until the arc sliding block 23 returns to the initial first bending station I so as to bend the next thin-wall steel tube 4.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through creative efforts should fall within the scope of the present invention.
Claims (8)
1. The extrusion-free bending equipment for the thin-wall steel pipe elbow bend comprises an equipment bottom plate (1), a motor (3) arranged on the equipment bottom plate (1), a driving gear (31) and a driven gear (32) which are in meshed transmission with each other; the method is characterized in that:
the device bottom plate (1) is provided with a steel pipe shallow groove and a sliding block deep groove, and the steel pipe shallow groove comprises a linear steel pipe shallow groove (11) for transversely accommodating the thin-wall steel pipe (4) to be bent and a straight line steel pipe shallow groove (11) for allowing the thin-wall steel pipe (4) to be bent
The rotary fan-shaped steel pipe shallow groove (12) is formed, and the slide block deep groove is formed by
The arc-shaped arc sliding block deep groove (13) and the longitudinal linear sliding block deep groove (14);
the driving gear (31) is arranged on an output shaft of the motor (3), the driven gear (32) is rotatably arranged on the equipment bottom plate (1), one end of a rocker (33) is fixedly arranged on the driven gear (32), and a sliding sleeve (34) is slidably arranged on the rocker (33);
the device is characterized by also comprising a positioning action rod (21) and a rotating force application rod (22) which are sleeved in the thin-wall steel pipe (4), wherein the left end of the positioning action rod (21) extends to the outside of the thin-wall steel pipe (4), and the right end of the rotating force application rod (22) extends to the outside of the thin-wall steel pipe (4) and is fixedly connected with an arc sliding block (23); the arc sliding block (23) can only slide in the sliding block deep groove; the sliding sleeve (34) is hinged with the arc sliding block (23);
the positioning action rod (21) and the equipment bottom plate (1) are provided with coaxial pin holes (10) along the vertical direction, and pins are arranged in the pin holes (10);
circular arc slider (23) are located for bending first station (I) during the top position of circular arc slider deep trouth (13), circular arc slider (23) are located circular arc slider deep trouth (13) with for bending second station (II) during straight line slider deep trouth (14) intersect position, circular arc slider (23) are located for bending third station (III) during straight line slider deep trouth (14) end position.
2. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: and an arc chamfer (15) is arranged at the intersection of the linear steel pipe shallow slot (11) and the fan-shaped steel pipe shallow slot (12).
3. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: the positioning action rod (21) and the rotating force application rod (22) are solid cylinders, and the outer diameter of the positioning action rod and the rotating force application rod is equal to the inner diameter of the thin-wall steel pipe (4).
4. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: when the arc sliding block (23) is positioned at the first bending station (I), the distance between the right end of the positioning action rod (21) and the left end of the rotary force application rod (22) is equal to the inner radius of the thin-walled steel pipe (4)
。
5. A sheet as claimed in claim 1Extrusion-free bending equipment for wall steel pipe elbow bends is characterized in that: when the arc sliding block (23) is positioned at the second bending station (II), the thin-wall steel pipe (4) is just bent
。
6. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: when the arc sliding block (23) is positioned at the third bending station (III), the rotary force application rod (22) just leaves the thin-wall steel pipe (4).
7. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: the driven gear (32) is a semi-circular gear, and the rocker (33) is fixedly arranged on a toothless smooth disk part of the driven gear (32).
8. The extrusion-free bending equipment for the right-angle elbow of the thin-walled steel pipe as claimed in claim 1, wherein: the radial length of the arc sliding block (23) is equal to the width of the arc sliding block deep groove (13); the circumferential length of the arc sliding block (23) is equal to the width of the straight sliding block deep groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375084.7A CN113083961B (en) | 2021-04-08 | 2021-04-08 | Extrusion-free bending equipment for right-angle elbow of thin-wall steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375084.7A CN113083961B (en) | 2021-04-08 | 2021-04-08 | Extrusion-free bending equipment for right-angle elbow of thin-wall steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113083961A CN113083961A (en) | 2021-07-09 |
| CN113083961B true CN113083961B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110375084.7A Active CN113083961B (en) | 2021-04-08 | 2021-04-08 | Extrusion-free bending equipment for right-angle elbow of thin-wall steel pipe |
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Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778842A (en) * | 1951-08-23 | 1957-07-10 | Green & Son Ltd | Improvements in or connected with tube bending |
| US4732025A (en) * | 1987-05-22 | 1988-03-22 | Ap Industries, Inc. | Precision bending apparatus and process |
| DE4423487C2 (en) * | 1994-07-05 | 1998-01-15 | Koenig & Bauer Albert Ag | Device for bending hollow profiles with cross sections not closed on all sides |
| JP2005014060A (en) * | 2003-06-27 | 2005-01-20 | Sanoh Industrial Co Ltd | Mandrel and method for bending tube |
| WO2008102477A1 (en) * | 2007-02-21 | 2008-08-28 | Nippon Steel Corporation | Apparatus and method for press-bending tube material |
| US7360385B1 (en) * | 2007-04-17 | 2008-04-22 | Gm Global Technology Operations, Inc. | Quick change bend tooling bolster |
| CN203197056U (en) * | 2013-03-19 | 2013-09-18 | 青岛造船厂有限公司 | Portable manual pipe bender |
| CN104056884A (en) * | 2014-06-20 | 2014-09-24 | 山东电力建设第一工程公司 | Small-caliber pipeline bending tool |
| CN204564853U (en) * | 2015-04-02 | 2015-08-19 | 河北华特汽车部件有限公司 | The quick bending press of a kind of thin-walled minor radius steel pipe |
| CN206550177U (en) * | 2017-03-20 | 2017-10-13 | 东莞市力铖机械设备有限公司 | A kind of efficient bend forming machine |
| CN108772449A (en) * | 2018-08-29 | 2018-11-09 | 潍坊市华玉塑料机械有限公司 | Swan neck system for thin-wall circular tube |
| CN208592266U (en) * | 2018-08-29 | 2019-03-12 | 潍坊市华玉塑料机械有限公司 | Swan neck system for thin-wall circular tube |
| CN108971282B (en) * | 2018-08-30 | 2019-10-11 | 常州大学 | A kind of universal metal bending robot of 90 degree of bendings |
| CN211915108U (en) * | 2019-12-29 | 2020-11-13 | 苏州韩工机械科技有限公司 | Pipe bending module of stainless steel pipe bending machine |
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2021
- 2021-04-08 CN CN202110375084.7A patent/CN113083961B/en active Active
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