CN102784821B - Coreless pipe-bending machine - Google Patents
Coreless pipe-bending machine Download PDFInfo
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- CN102784821B CN102784821B CN201210276646.3A CN201210276646A CN102784821B CN 102784821 B CN102784821 B CN 102784821B CN 201210276646 A CN201210276646 A CN 201210276646A CN 102784821 B CN102784821 B CN 102784821B
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- pipe
- rotary arm
- induction heating
- bending machine
- force arm
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Abstract
The invention discloses a coreless pipe-blending machine in the field of pipe processing equipment. The coreless pipe-blending machine is provided with a hydraulic push plate, a pipe bending device and an inductive heating ring, wherein the hydraulic push plate is fixedly arranged on a base and is fixedly provided with a rear clamp; a pipe blank guide holder is further arranged on the base; the pipe blank guide holder is provided with at least one pair of guide rolls; the pipe bending device comprises a rotary force arm shaft arranged on a rotary force arm base; a rotary force arm clamp is sleeved on the rotary force arm shaft; a rotary force arm pull rod is clamped on the rotary force arm clamp; a front clamp is fixedly arranged at the end part of the rotary force arm pull rod; and the inside angle, which is back on to the rack, of the inductive heating ring is provided with a plurality of water spray holes. According to the coreless pipe-bending machine, water spray cooling and sizing are carried out on a bent pipe which is heated to be bent, and the bent section of a pipe blank is controlled at a position through which the pipe blank gets out of the inductive heating ring, the stress concentration of the bent section is ensured, the processing precision of the bent pipe is improved, the percent of pass of the bent pipe is improved, and the coreless pipe-bending machine can be used for precision machining of the bent pipes.
Description
Technical field
The present invention relates to a kind of pipe fitting process equipment, particularly a kind of bending machine.
Background technology
Bend pipe is one of important composition component of pipe-line, and long-distance transmission pipeline needs a large amount of bend pipes.Bend pipe is also carry one of comparatively harsh structural member in pipeline.In the pipeline of built operation, the Pipeline Failure accident relevant with bend pipe occupies quite high ratio in whole pipeline accident, and the comprehensive quality of bend pipe is one of bottleneck of restriction pipeline safety even running.
Induction heating syphon production technology fully use eddy-current heating have heating rapidly, narrow, the fast cooling feature in heating tape, compared with other method, induction heating syphon method has that ovality is little, wall thickness reduction is minimum and the plurality of advantages such as bending radius is easy to adjust, intermediate frequency hot pushing bent tubes technique is the most cost-effective one in existing various bent tube technique.Adopt Frequency Induction Heating, avoid the even phenomenon of bend pipe wall unevenness that bend pipe chimb tube wall tension when traditional bent tube technique is shaped is thinning, concave edge wall compression thickens and causes.
Disclose a kind of medium-frequency pipe bender realizing complex bend in prior art, its notification number: CN202114111, the patent No.: 201120182352.5, comprising: a, a pivoted arm rotated with main shaft, and this main shaft is perpendicular to XY plane; B, the chuck be arranged on described pivoted arm; C, be positioned at the Frequency Induction Heating circle of main shaft sidepiece; D, be positioned at this Frequency Induction Heating circle front end for making pipe to be parallel to the guider of direction by Frequency Induction Heating circle of XY plane; The drive unit of e, the motion of promotion pipe; F, make described pivoted arm while rotating along the drive mechanism of main shaft axially-movable.
Its weak point is: the pipe after induction heating circle heating is in the process of being out of shape around main axis, because the pipe after heating can not be cooled in time, and stress distribution is uneven in BENDING PROCESS, thus the evenly bending of pipe fitting can not be ensured, larger flexural deformation is locally there is once have, the intensity of this position will decline fast, cause this local, position crumple distortion in BENDING PROCESS, thus have a strong impact on the qualification rate of pipe fitting, and this device is fixed due to the distance of rotating shaft to chuck, this just makes when producing bend pipe, bending radian is relatively fixing, if when needing the bend pipe processing different radian, then need the pivoted arm changing different size, thus add production cost.
Summary of the invention
The object of this invention is to provide a kind of Pipe Bending Machine with Non-core, ensure that sweep is evenly bending, improve product percent of pass, increase the scope of this device processing bend pipe.
The object of the present invention is achieved like this: a kind of Pipe Bending Machine with Non-core, comprise the hydraulic pressure push pedal be fixedly mounted on support, swan neck system, induction heating circle, described hydraulic pressure push pedal is installed with rear jig, described support is also provided with pipe guide holder, described pipe guide holder is provided with at least one pair of guide roller, described swan neck system comprises the revolving force arm axle be arranged on rotary arm base, described rotary arm axle sleeve is equipped with rotary arm fixture, described rotary arm fixture has clamped rotary arm pull bar, the end winding support of rotary arm pull bar is provided with front jig, described front jig, induction heating circle, rear jig is coaxially arranged, the medial angle of described induction heating circle board dorsad offers some hole for water sprayings.
Before work of the present invention, first pipe to be processed is arranged on support, one end of pipe is fixed on rear jig, the middle part of pipe is arranged between guide roller, the other end of pipe is fixed on front jig through induction heating circle, now rotary arm pull bar is in 0 ° of position, during work, start induction heating circle and hydraulic pressure push pedal, hydraulic pressure push pedal promotes pipe and slowly moves forward, the pipe of induction heating circle to process heats, be fixed on the rotation of the pipe on front jig along with revolving force arm axle, drive just heated after pipe section bend in induction heating circle exit, pipe after bending carries out water-spraying control under the slow promotion of hydraulic pressure push pedal, the local strength of water-spraying control back elbow strengthens, this local is finalized, along with the slow promotion of hydraulic pressure push pedal, all the time be bent distortion near the position of induction coil, finally realize the evenly shaping of bend pipe, when bending reach corresponding specification after, shutdown system, take off the bend pipe machined, rotary arm pull bar is forwarded to 0 ° of position, carry out the processing of next pipe again, whole bend fixing process can be divided into following three steps: eddy-current heating → thermal flexure → cooling and shaping.Compared with prior art, beneficial effect of the present invention is, the present invention is by carrying out the sizing of water-spraying control local in time to the bend pipe after thermal bending, eliminate pipe causes elbow curvature uneven because stress distribution is uneven in thermal bending process, easily there is the problem that crumple is out of shape, pipe bending section to be controlled at pipe, just from induction heating circle position out, to ensure that the stress of bending section is concentrated, improve the machining accuracy of bend pipe, and improve the qualification rate of bend pipe.The present invention can be used in the Precision Machining of bend pipe.
In order to ensure that water-spraying control is more even, ensure fixed effect, described hole for water spraying is distributed on induction heating circle medial angle ringwise, and offer the annular cooling water road being communicated with hole for water spraying in described induction heating circle, the top of described cooling water channel is provided with water inlet pipe.
In order to improve the machining accuracy of bend pipe further, bending section and cooling section are independent of each other, on described pipe, water-spraying control section is arranged on distance induction heating circle on pipe face and has within the scope of hole for water spraying end face 20cm ~ 50cm.Bending section length needed for the pipe of different size is different, and cause bending section to be vulnerable to cold water impact due to the heat transfer of tube surfaces, if water-spraying control segment distance induction heating circle is excessively near, then bending section is subject to cold water impact, then bending section can be shaped too early, and pipe bending deformation quantity is inadequate, thus cause bend pipe defective, cooled region from heating region too away from, then can affect the distribution of stress, thus cause Tube Bending Deformation uncontrollable.
In order to increase this device scope of application further, the pipe of processing different size flexibility, described rotary arm base is slidably arranged on rotary arm guide rail, and the end of rotary arm guide rail is provided with rotary arm governor motor, and described revolving force arm axle is also provided with angle scale.The position on rotary arm pull bar is clipped in by adjustment rotary arm fixture, regulate the position of rotary arm base on rotary arm guide rail simultaneously, regulate bending radius, thus realize the processing of the pipe of different size, and in the course of work, by the flexibility of the angle display bend pipe of angle scale.
In order to increase the scope of application of this device, the pipe of processing different tube diameters, described guide holder is provided with the adjusting rod regulating guide roller spacing.The spacing of guide roller is regulated to compress different tube diameters pipe by adjusting rod.
In order to strengthen the stability of guide roller guiding further, it is two right that described guide roller is provided with.
The stability of pipe process is promoted in order to strengthen hydraulic pressure push pedal, described hydraulic pressure push pedal comprises propelling cylinder, the end of described propelling cylinder piston rod is connected with cuts somebody's hair, described support is also provided with the guide rail slided for hydraulic pressure push pedal, described propelling cylinder is provided with two, on cutting somebody's hair described in described two propelling cylinder piston rods are all connected to, described in the center of cutting somebody's hair be provided with rear jig.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is induction heating circle structural representation of the present invention.
Fig. 5 is that the A-A of Fig. 4 is to sectional view.
Fig. 6 is elbow curvature area schematic in the present invention.
Fig. 7 is working state schematic representation of the present invention.
Wherein, 1 support, 2 propelling cylinders, 3 cut somebody's hair, 4 rear jigs, 5 frame guide rails, 6 guide holders, 6a guide roller, 6b adjusting rod, 7 pipes, 8 induction heating circles, 8a hole for water spraying, 8b cooling water channel, 8c water inlet pipe, 9 front jigs, 10 rotary arm governor motors, 11 rotary arm guide rails, 12 rotary arm bases, 13 revolving force arm axles, 14 angle scales, 15 rotary arm fixtures, 16 rotary arm pull bars.
Detailed description of the invention
A kind of Pipe Bending Machine with Non-core as shown in figs. 1-7, comprise the hydraulic pressure push pedal be fixedly mounted on support 1, swan neck system, induction heating circle 8, hydraulic pressure push pedal comprises two propelling cylinders 2, the end of propelling cylinder 2 piston rod is connected with cuts somebody's hair 3, 3 centers of cutting somebody's hair are installed with rear jig 4, support 1 is also provided with the frame guide rail 5 for 3 slips of cutting somebody's hair and pipe guide holder 6, guide holder 6 is provided with two couples of guide roller 6a and regulates the adjusting rod 6b of guide roller 6a spacing, swan neck system comprises the revolving force arm axle 13 be arranged on rotary arm base 12, revolving force arm axle 13 is set with rotary arm fixture 15 and angle scale 14, rotary arm fixture 15 clamps rotary arm pull bar 16, the end winding support of rotary arm pull bar 16 is provided with front jig 9, rotary arm base 12 is slidably arranged on rotary arm guide rail 11, the end of rotary arm guide rail 11 is provided with rotary arm governor motor 10, front jig 9, induction heating circle 8, rear jig 4 is coaxially arranged, the medial angle of induction heating circle 8 board dorsad evenly offers some hole for water spraying 8a, the annular cooling water road 8b being communicated with hole for water spraying 8a is offered in induction heating circle 8, the top of cooling water channel 8b is provided with water inlet pipe 8c, on pipe 7, water-spraying control section is arranged on the upper distance induction heating circle 8 of pipe 7 and has within the scope of hole for water spraying 8a end face 20cm ~ 50cm.
Before work of the present invention, first pipe 7 to be processed is arranged on support 1, one end of pipe 7 is fixed on rear jig 4, the middle part of pipe 7 is arranged between guide roller 6a, the other end of pipe 7 is fixed on front jig 9 through induction heating circle 8, now rotary arm pull bar 16 is in 0 ° of position, during work, start induction heating circle 8 and propelling cylinder 2, propelling cylinder 2 promotes pipe 7 and slowly moves forward, the pipe 7 of induction heating circle 8 to process heats, be fixed on the rotation of the pipe 7 on front jig 9 along with revolving force arm axle 13, drive just heated after pipe 7 sections bend in induction heating circle 8 exit, pipe 7 after bending carries out water-spraying control under the slow promotion of propelling cylinder 2, the intensity enhancing of pipe 7 after water-spraying control, along with the slow promotion of propelling cylinder 2, realize the slowly shaping of pipe 7, when bending reach corresponding specification after, shutdown system, take off the bend pipe machined, rotary arm pull bar 16 is forwarded to 0 ° of position, carry out the processing of next pipe 7 again, whole bend fixing process can be divided into following three steps: eddy-current heating → thermal flexure → cooling and shaping, in process, the angle that the angle scale 14 Real-Time Monitoring pipe 7 by being sleeved on revolving force arm axle 13 bends, realizes the precise hard_drawn tuhes of angle of bend, when if desired processing the pipe 7 of different size, the position on rotary arm pull bar 16 is clipped in by adjustment rotary arm fixture 15, regulate the position of rotary arm base 12 on rotary arm guide rail 11 simultaneously, regulate bending radius, thus realize the processing of the pipe 7 of obstructed specification.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (6)
1. a Pipe Bending Machine with Non-core, comprise the hydraulic pressure push pedal be fixedly mounted on support, swan neck system, induction heating circle, described hydraulic pressure push pedal is installed with rear jig, described support is also provided with pipe guide holder, described pipe guide holder is provided with at least one pair of guide roller, described swan neck system comprises the revolving force arm axle be arranged on rotary arm base, described rotary arm axle sleeve is equipped with rotary arm fixture, described rotary arm fixture has clamped rotary arm pull bar, the end winding support of rotary arm pull bar is provided with front jig, described front jig, induction heating circle, rear jig is coaxially arranged, it is characterized in that, the medial angle of described induction heating circle board dorsad offers some hole for water sprayings, described hole for water spraying is distributed on induction heating circle medial angle ringwise, the annular cooling water road being communicated with hole for water spraying is offered in described induction heating circle, the top of described cooling water channel is provided with water inlet pipe, on described pipe, water-spraying control section is arranged on distance induction heating circle on pipe face and has within the scope of hole for water spraying end face 20cm ~ 50cm.
2. a kind of Pipe Bending Machine with Non-core according to claim 1, it is characterized in that, described rotary arm base is slidably arranged on rotary arm guide rail, and the end of rotary arm guide rail is provided with rotary arm governor motor, and described revolving force arm axle is also provided with angle scale.
3. a kind of Pipe Bending Machine with Non-core according to claim 1, is characterized in that, described guide holder is provided with the adjusting rod regulating guide roller spacing.
4. a kind of Pipe Bending Machine with Non-core according to claim 1, is characterized in that, it is two right that described guide roller is provided with.
5. a kind of Pipe Bending Machine with Non-core according to claim 1, is characterized in that, described hydraulic pressure push pedal comprises propelling cylinder, and the end of described propelling cylinder piston rod is connected with cuts somebody's hair, and described support is also provided with the guide rail slided for hydraulic pressure push pedal.
6. a kind of Pipe Bending Machine with Non-core according to claim 5, is characterized in that, described propelling cylinder is provided with two, on cutting somebody's hair described in described two propelling cylinder piston rods are all connected to, described in the center of cutting somebody's hair be provided with rear jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276646.3A CN102784821B (en) | 2012-08-06 | 2012-08-06 | Coreless pipe-bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276646.3A CN102784821B (en) | 2012-08-06 | 2012-08-06 | Coreless pipe-bending machine |
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| CN102784821A CN102784821A (en) | 2012-11-21 |
| CN102784821B true CN102784821B (en) | 2015-03-25 |
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| CN103447360A (en) * | 2013-08-26 | 2013-12-18 | 河南省驰源石油化工机械有限公司 | Device for producing arc-shaped steel pipes |
| CN104438495A (en) * | 2013-09-24 | 2015-03-25 | 中石化胜利油建工程有限公司 | One-step method hot-bending bend device and process |
| CN103801600A (en) * | 2014-02-18 | 2014-05-21 | 常熟市高压容器制造有限公司 | Continuous push type medium frequency heating bent pipe machining device and machining method |
| CN104259272B (en) * | 2014-08-11 | 2016-04-27 | 西北工业大学 | A kind of eddy-current heating stretch wrap forming device for aircraft section bar |
| CN104324992B (en) * | 2014-10-21 | 2016-07-27 | 广西来宾东糖迁江有限公司 | A kind of multiplex pipe bender |
| CN104527039A (en) * | 2014-11-28 | 2015-04-22 | 安徽雄峰实业有限公司 | Plastic section bar folding apparatus |
| CN104441596A (en) * | 2014-11-28 | 2015-03-25 | 安徽雄峰实业有限公司 | Electromagnetic heating plastic profile bending device |
| CN106391786B (en) * | 2016-11-08 | 2018-09-25 | 中国能源建设集团天津电力建设有限公司 | A kind of sliding desk type bending machine swan neck system and its application method |
| CN106734421B (en) * | 2016-12-13 | 2018-03-23 | 重庆博钻太阳能灯具有限公司 | Lamp stand processing unit (plant) |
| CN107617692A (en) * | 2017-06-09 | 2018-01-23 | 安徽宏远机械制造有限公司 | A kind of auxiliary positioning device for machining |
| CN107983808A (en) * | 2017-11-29 | 2018-05-04 | 无锡市汇鼎金属制管有限公司 | A kind of metal tube processing molding machine |
| CN109396231A (en) * | 2018-11-15 | 2019-03-01 | 太原科技大学 | A kind of deep camber centreless magnesium alloy pipe bending forming technique |
| CN110586716B (en) * | 2019-10-10 | 2021-04-23 | 山东建筑大学 | Telescopic rocker arm for multi-arc pipe hot bending forming, pipe bending equipment and pipe bending process |
| CN110695160A (en) * | 2019-11-11 | 2020-01-17 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Small-curvature-radius induction heating pipe bender |
| CN110947807A (en) * | 2019-12-19 | 2020-04-03 | 马鞍山市兴隆铸造有限公司 | Elbow pipe machining device convenient to use |
| CN111167898A (en) * | 2020-01-17 | 2020-05-19 | 南昌航空大学 | Pipe numerical control winding and pushing forming method and device |
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| US6192728B1 (en) * | 2000-05-30 | 2001-02-27 | Yin Lin Machine Industrial Co., Ltd | Pipe bending machine accurately controlling bent angles of pipes |
| CN202725720U (en) * | 2012-08-06 | 2013-02-13 | 江苏兴洋管业股份有限公司 | Coreless pipe bending machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01154825A (en) * | 1987-12-14 | 1989-06-16 | Ishikawajima Harima Heavy Ind Co Ltd | Bending method for stainless steel pipe |
| JP5521144B2 (en) * | 2008-12-05 | 2014-06-11 | 学校法人 工学院大学 | Steel pipe bending apparatus and steel pipe bending method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6192728B1 (en) * | 2000-05-30 | 2001-02-27 | Yin Lin Machine Industrial Co., Ltd | Pipe bending machine accurately controlling bent angles of pipes |
| CN202725720U (en) * | 2012-08-06 | 2013-02-13 | 江苏兴洋管业股份有限公司 | Coreless pipe bending machine |
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| CN102784821A (en) | 2012-11-21 |
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