CN111842552B

CN111842552B - Pipe fitting shaping device

Info

Publication number: CN111842552B
Application number: CN202010599831.0A
Authority: CN
Inventors: 顿超亚; 薛山; 张志军; 杨刚; 韩九阳
Original assignee: Beijing Jingyi Automation Equipment Co Ltd
Current assignee: Beijing Jingyi Automation Equipment Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2022-10-21
Anticipated expiration: 2040-06-28
Also published as: CN111842552A

Abstract

The invention relates to the technical field of pipe fitting processing, and provides a pipe fitting shaping device which comprises a limiting cylinder, a limiting hole and a shaping cylinder, wherein the limiting cylinder is provided with the limiting hole; the rotary disc is positioned in the limiting cylinder, is suitable for rotating along a set circumference, and is provided with a guide groove; the actuating part is suitable for moving along the extending direction of the guide groove relative to the guide groove and extends out of the limiting cylinder through the limiting hole, and the limiting hole is used for limiting the actuating part to rotate along a set circumference; and the driving part is used for driving the turntable to rotate so that the actuating part moves back to or towards the rotating axis of the turntable along the guide groove. According to the pipe fitting shaping device provided by the embodiment of the invention, the driving part drives the rotary table to rotate. The effect in spacing hole makes the executive component can't follow carousel synchronous rotation. The process of the actuating element moving along the guide groove, that is to say the process of the actuating element moving towards the turntable or moving away from the turntable. Wherein, when the executive component moves towards the carousel dorsad, the executive component can carry out the structural adjustment to the pipe fitting of establishing in spacing section of thick bamboo outside.

Description

Pipe fitting shaping device

Technical Field

The invention relates to the technical field of pipe fitting machining, in particular to a pipe fitting shaping device.

Background

For pipe fittings, deviation of the shape of the pipe fitting can be caused during processing or transportation, and the deviation of the shape of the pipe fitting needs to be controlled within a reasonable range regardless of round pipes or other shapes.

Taking a round tube as an example, the deviation of the out-of-roundness of a round tube is generally not allowed to exceed 1.5% of its diameter. The tolerance deviation of the out-of-roundness of the round pipe can influence the welding quality, and the out-of-roundness can cause the fit welding clearance between the round pipe and the flange to be inconsistent, so that the welding seam is heated unevenly in the welding process, thereby influencing the welding quality. Therefore, in order to improve the welding quality in welding round pipes, the out-of-roundness of the round pipes must be reduced. There are three approaches to solve this problem.

Firstly, improve the production precision of pipe, just can guarantee its circularity value when making it leave the factory. The improvement of the production precision inevitably increases the production cost, the processing technology thereof becomes complicated, and the production efficiency is also reduced.

Secondly, the rounding machine is utilized to round without being influenced by the internal stress, and the ideal effect can be achieved by repeated rolling. Multiple rolling also reduces production efficiency and increases cost, and repeated rolling can affect the physical properties of the welded round tube.

And thirdly, trimming and spot welding are carried out while the workpiece is trimmed through a jack and other equipment, and then welding is carried out after trimming. The mode has complex installation, long time consumption for welding preparation and low production efficiency, and meanwhile, the welding quality can be influenced by multiple times of spot welding.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pipe fitting reshaping device which is convenient to operate and simple in structure.

According to an embodiment of the present invention, there is provided a pipe shaping device including:

the limiting cylinder is provided with a limiting hole;

the rotary disc is positioned in the limiting cylinder, is suitable for rotating along a set circumference, and is provided with a guide groove;

the actuating piece is suitable for moving relative to the guide groove along the extending direction of the guide groove and extends out of the limiting cylinder from the limiting hole, and the limiting hole is used for limiting the actuating piece to rotate along the set circumference;

and the driving part is used for driving the turntable to rotate so that the actuating part moves along the guide groove back to or towards the rotating axis of the turntable.

According to the pipe fitting shaping device provided by the embodiment of the invention, the driving part drives the rotary table to rotate. Due to the action of the limiting hole, the executing piece cannot synchronously rotate along with the turntable but moves relative to the extending direction of the guide groove. The process of the actuating element moving along the guide groove, that is to say the process of the actuating element moving towards the turntable or moving away from the turntable. Wherein, when the executive component moves towards the carousel dorsad, the executive component can carry out the structural adjustment to the pipe fitting of establishing in spacing section of thick bamboo outside.

According to one embodiment of the invention, the pipe reforming device further comprises:

the supporting piece comprises a mounting flat plate, the mounting flat plate comprises a first surface and a second surface which are oppositely arranged, and the limiting cylinder is fixed on the first surface.

According to one embodiment of the invention, the limiting cylinder is provided with a through hole extending along an axial direction parallel to the limiting cylinder, and the first connecting piece penetrates through the through hole and fixes the limiting cylinder on the first surface.

According to one embodiment of the invention, the drive member comprises:

a first end of the transmission shaft is connected with the turntable, and a second end of the transmission shaft extends out of the second surface;

the second transmission shaft is perpendicular to the first transmission shaft, the first end of the second transmission shaft is connected with the second end of the first transmission shaft, and a stressed part is fixed at the second end of the second transmission shaft;

the bearing seat is fixed on the second surface, a mounting hole is formed in the bearing seat, and an internal thread is formed in the mounting hole;

the threaded shaft is arranged in the mounting hole and provided with an external thread matched with the internal thread; the first end of the threaded shaft is connected with the force application rod, and the second end of the threaded shaft is connected with the stressed part, so that the force application rod rotates to drive the second transmission shaft, the first transmission shaft and the rotary table to rotate.

According to one embodiment of the invention, a first end of the first transmission shaft is in limit fit with the first long round hole of the rotary table through a first limit part, a second end of the first transmission shaft is in limit fit with the second long round hole of the second transmission shaft through a second limit part, the first transmission shaft is provided with a shaft shoulder, and the shaft shoulder is in limit fit with the first surface.

According to an embodiment of the invention, the support further comprises:

the limiting plate is connected with the mounting flat plate, and a mounting space of the bearing seat is enclosed between the limiting plate and the second surface;

and the fixing plate is connected with the limiting plate and used for fixing the supporting piece.

According to an embodiment of the present invention, further comprising:

the flange is used for being mounted on the first surface, and the limiting cylinder is used for limiting the flange to be mounted on the first surface.

According to one embodiment of the invention, the limiting cylinder is a cylinder, and the limiting holes are multiple and uniformly distributed along the circumferential direction of the cylinder; the executing piece, the guide groove and the limiting hole are arranged in a one-to-one correspondence mode.

According to one embodiment of the invention, the number of the limiting holes, the number of the executing parts and the number of the guide grooves are six respectively.

According to one embodiment of the invention, the executing piece is a shaping block, the shaping block is of a symmetrical structure, the middle part of the shaping block is provided with an installation groove, and the edge of the turntable is embedded into the installation groove, so that the guide groove corresponds to the installation groove;

the shaping block is further formed with a connection hole such that a third connecting member connects the shaping block and the turntable through the connection hole and a guide groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic partial structural view of a pipe fitting reshaping apparatus provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a turntable according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a support member according to an embodiment of the present invention;

FIG. 4 is a schematic partially exploded view of a pipe fitting reshaping device according to an embodiment of the present invention;

FIG. 5 is a schematic view of an assembly of a support member provided by an embodiment of the present invention;

FIG. 6 is an assembly schematic diagram of a pipe fitting fairing provided in accordance with an embodiment of the invention showing the installation process of pressure horns;

FIG. 7 is an assembled schematic view of a pipe fitting fairing as provided by an embodiment of the invention after the pressure corner piece is installed in place;

FIG. 8 is a schematic structural diagram of a limiting cylinder according to an embodiment of the present invention;

FIG. 9 isbase:Sub>A schematic cross-sectional view taken at A-A in FIG. 8;

reference numerals:

1. a guide groove; 101. a proximal endpoint; 102. a distal point; 2. a turntable; 3. a limiting cylinder; 301. a limiting hole; 302. a through hole; 4. an executive component; 5. installing a flat plate; 501. a first surface; 502. a second surface; 6. a limiting plate; 7. a fixing plate; 8. a stopper; 9. a first transmission shaft; 10. a cushion block; 11. a force-receiving member; 12. a second drive shaft; 13. a bearing seat; 14. a threaded shaft; 15. a force application rod; 16. a second connecting member; 17. a pressure angle sheet; 18. a support ring; 19. a circular tube; 20. a third connecting member; 21. and (4) a flange.

Detailed Description

Embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention may be understood as specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 9, the pipe shaping device according to the embodiment of the present invention includes a limiting cylinder 3, a rotating disc 2, an actuating element 4 and a driving element. Wherein, the limiting cylinder 3 is provided with a limiting hole 301; the rotary table 2 is positioned in the limiting cylinder 3 and is suitable for rotating along a set circumference, and a guide groove 1 is formed on the rotary table 2; the actuating part 4 is suitable for moving relative to the guide groove 1 along the extending direction thereof and extends out of the limiting cylinder 3 through the limiting hole 301, and the limiting hole 301 is used for limiting the actuating part 4 to rotate along the set circumference; the driving component is used for driving the turntable 2 to rotate, so that the actuating part 4 moves along the guide groove 1 back to or towards the rotation axis of the turntable 2.

The limiting hole 301 is used for preventing the actuating member 4 from synchronously rotating with the turntable 2 and moving along the radial direction of the set circumference. And the actuating member 4 moves along the guide groove 1 away from or towards the rotation axis of the turntable 2, i.e. the actuating member 4 moves along the radial direction of the set circumference. According to the pipe fitting shaping device provided by the embodiment of the invention, the rotary table 2 is driven to rotate by the driving part. Due to the action of the limiting hole 301, the actuating member 4 cannot synchronously rotate along with the turntable 2, but moves relative to the extending direction of the guide groove 1. The process of the movement of the actuating element 4 along the guide groove 1, i.e. the process of the movement of the actuating element 4 towards the turntable 2 or away from the turntable 2. Wherein, when executive component 4 moves towards carousel 2 dorsad, executive component 4 can carry out structural adjustment to the pipe fitting of establishing in spacing section of thick bamboo 3 outside.

Preferably, the limiting cylinder 3 and the rotating disc 2 are coaxially arranged. Of course, in some special cases, some deviation between the limiting cylinder 3 and the rotating disc 2 is also allowed.

Referring to fig. 2, in order to ensure the process of moving the actuating member 4 along the guide slot 1, i.e. the process of moving the actuating member 4 towards the turntable 2 or away from the turntable 2, the structure of the guide slot 1 may adopt the structure of fig. 2. The guide groove 1 in fig. 2 has both an extension in the set circumferential direction and the radial direction. The rotation angle of the turntable 2 can be limited through the matching among the guide groove 1, the actuating part 4 and the limiting cylinder 3.

It should be noted that all the guide grooves 1 in fig. 2 have the same shape, so that the actuating member 4 is always located on the same circumference when the actuating member 4 moves along the guide grooves 1. When the number of the guide grooves 1 is multiple, the guide grooves 1 can also be in different shapes, and the executive component 4 can also be used for shaping pipe fittings with cross sections in other shapes, such as pipe fittings with rectangular cross sections, pipe fittings with oval cross sections and the like. Of course, besides different guide grooves 1 arranged on the rotary disc 2, the executive component 4 can also be in various forms, so as to meet the shaping requirements of pipe fittings with different cross sections. For example, when shaping an elliptical tube, two different rules of the effector 4 may be used for shaping based on the ellipse having two parameters, major and minor.

Referring to fig. 3 to 5, the pipe shaping device according to the embodiment of the present invention further includes a support. The supporting member comprises a mounting plate 5, the mounting plate 5 comprises a first surface 501 and a second surface 502 which are oppositely arranged, and the limiting cylinder 3 is fixed on the first surface 501. Wherein, realize spacing fixed of section of thick bamboo 3 through installation flat 5, can guarantee the reliability of spacing section of thick bamboo 3 installation.

According to the pipe fitting shaping device of the embodiment of the invention, in combination with fig. 1, the limiting cylinder 3 is provided with a through hole 302 extending in an axial direction parallel to the limiting cylinder, and a first connecting piece penetrates through the through hole 302 and fixes the limiting cylinder 3 to the first surface 501.

Referring to fig. 1 and 4, in one embodiment, the number of the through holes 302 is six, and the through holes are uniformly distributed along the wall of the limiting cylinder 3, so that the limiting cylinder 3 is uniformly stressed, and the limiting cylinder 3 is reliably fixed on the first surface 501 of the mounting plate 5. It should be noted that, of course, the number and distribution of the through holes 302 are not limited, and the limiting cylinder 3 may also be fixed by adopting a structural form other than the through holes 302 and the first connecting member. The first connecting member may be a screw, and the screw is screwed to the threaded hole of the first surface 501 after passing through the through hole 302.

According to the pipe shaping device of the embodiment of the present invention, referring to fig. 4 and 5, the driving part includes the first transmission shaft 9, the second transmission shaft 12, the bearing seat 13, the threaded shaft 14, the force applying rod 15, the force receiving member 11, and the like. A first end of a first transmission shaft 9 is connected with the turntable 2, and a second end of the transmission shaft extends out of the second surface 502; a second transmission shaft 12 is perpendicular to the first transmission shaft 9, a first end of the second transmission shaft 12 is connected with a second end of the first transmission shaft 9, and a stressed part 11 is fixed at the second end of the second transmission shaft 12; a bearing seat 13 is fixed on the second surface 502, a mounting hole is formed on the bearing seat 13, and an internal thread is formed on the mounting hole; a threaded shaft 14 is mounted in the mounting hole, and the threaded shaft 14 is provided with an external thread matched with the internal thread; the first end of the threaded shaft 14 is connected with a force application rod 15, and the second end is connected with the force receiving member 11, so that the force application rod 15 rotates to drive the second transmission shaft 12, the first transmission shaft 9 and the rotary table 2 to rotate.

The force application rod 15 applies torque by utilizing a lever principle, and the labor intensity of operation can be reduced by increasing the length of the force application rod 15. Further, the form of fitting between the force receiving member 11 and the threaded shaft 14 is not limited. For example, as shown in fig. 5, the threaded shaft 14 is formed with a recess, and the force-receiving member 11 is located in the recess, so that the force-receiving member 11 and the second transmission shaft 12 are rotated when the threaded shaft 14 moves linearly. For another example, the first end of the threaded shaft 14 may be configured like a collar, and the force-receiving member 11 is mounted in the collar, so that the force-receiving member 11 and the second transmission shaft 12 are driven to rotate when the threaded shaft 14 moves linearly.

It should be noted that, according to the pipe shaping device of the embodiment of the present invention, the driving part has self-locking property, and the pipe shaping device can resist the rebound deformation without adding an additional part. For example, when welding pipes, the pipes may generate internal stress during welding, which may cause the pipes to rebound and deform. And because the driving part adopts the mounting hole with the internal thread and the threaded shaft 14 for matching, the threaded shaft 14 can be self-locked at the current position, and the actuating part 4 is positioned at the current position.

According to the embodiment of the present invention, a first end of the first transmission shaft 9 is in limit fit with the first long circular hole of the rotary table 2 through a first limit portion, a second end of the first transmission shaft 9 is in limit fit with the second long circular hole of the second transmission shaft 12 through a second limit portion, and the first transmission shaft 9 is formed with a shaft shoulder which is in limit fit with the first surface 501.

First spacing portion and second spacing portion as long as can respectively with first slotted hole and second slotted hole between form spacing cooperation can, also: when the first transmission shaft 9 rotates, the turntable 2 is driven to rotate through the matching between the first long circular hole and the first limiting part; and when the second transmission shaft 12 rotates, the first rotation shaft is driven to rotate through the matching between the second long circular hole and the second limiting part.

Of course, other configurations may also be used to couple the turntable 2 to the first drive shaft 9, and the first drive shaft 9 to the second drive shaft 12, in order to allow rotation of the second drive shaft 12 to be transmitted to the turntable 2. For example, the cross section of the part where the first transmission shaft 9 and the rotating disc 2 are matched is triangular, oval, rectangular or even irregular; the holes on the rotary disc 2 are matched with the parts with triangular, elliptical, rectangular or even special-shaped cross sections. Similarly, the structure of the part of the second transmission shaft 12 which is matched with the first transmission shaft 9 is not limited by the attached drawings.

According to the pipe fitting shaping device provided by the embodiment of the invention, the first transmission shaft 9 is provided with the shaft shoulder which is in limit fit with the first surface 501, so that the force applied to the first transmission shaft 9 can be transmitted to the first surface 501 of the installation flat plate 5 through the shaft shoulder.

According to the pipe shaping device of the embodiment of the present invention, the driving part includes two stoppers 8 and a pad 10. Wherein, two dog 8 are fixed respectively in the tip of first transmission shaft 9, and the both ends of first transmission shaft 9 are formed with the screw hole respectively, and then the screw passes behind dog 8 and fixes in the middle of the screw hole to first transmission shaft 9. Further, a spacer 10 is installed between the second driving shaft 12 and the second surface 502 of the mounting plate 5 to protect the second driving shaft 12 and the mounting plate 5.

Referring to fig. 3 to 5, according to an embodiment of the present invention, the supporting member further includes a limiting plate 6 and a fixing plate 7. The limiting plate 6 is connected with the mounting flat plate 5, and a mounting space of the bearing seat 13 is enclosed between the limiting plate 6 and the second surface 502; the fixing plate 7 is connected with the limiting plate 6 and used for fixing the supporting piece. In fig. 5, the bearing seat 13 is fixed on the second surface 502 of the mounting plate 5, which not only does not affect the mounting of other components, but also can ensure the aesthetic appearance of the pipe shaping device. In fig. 5, the bearing housing 13 is fixed to the second surface 502 of the mounting plate 5 by four screws. Of course, the bearing block 13 can also be fixed in other ways.

According to an embodiment of the invention, the pipe-shaping device further comprises a support ring 18, the support ring 18 being used to make the flange 21 to be mounted and the restraining cylinder 3 coaxial. Referring to fig. 6 and 7, the inner diameter of the supporting ring 18 and the outer diameter of the limiting cylinder 3 are matched to ensure that the supporting ring 18 and the limiting cylinder 3 are coaxially arranged. Furthermore, the edge of the support ring 18 is formed with an annular flange, the inner diameter of which is adapted to the outer diameter of the flange 21 to be welded, and the flange 21 to be welded is secured coaxially with the spacing cylinder 3 by the support ring provided with the above-mentioned annular flange. That is, the support ring 18 is sleeved on the outer side of the limiting cylinder 3, and the coaxial arrangement of the support ring 18 and the limiting cylinder 3 is ensured through the matching between the inner surface of the support ring 18 and the outer surface of the limiting cylinder 3; thereafter, the flange 21 is mounted inside the annular flange of the support ring 18, ensuring the coaxiality between the annular flange of the support ring 18 and the flange 21 by the cooperation between the outer surface of the flange 21 and the inner surface of the annular flange; finally, the coaxiality of the flange 21 and the limiting cylinder 3 is realized.

According to an embodiment of the invention, the flange 21 is fixed to said first surface 501 by means of a pressure corner piece 17 and a second connection piece 16 arranged along the edge of said flange 21. When the pipe fitting reshaping device is used for reshaping pipe fittings with different sizes, only different support rings 18, correspondingly different flanges 21, need to be used and fixed through the pressure angle piece 17 and the second connecting piece 16. When welding the flange 21 and the pipe, since the flange 21 is fixed to the first surface 501 using the pressure fillet 17 and the second connecting piece 16, the flange 21 can be prevented from being deformed by heat during the welding process.

Wherein, the second connecting member 16 can be a guide screw, so as to facilitate the dismounting and replacing of the flange 21.

According to the embodiment of the invention, the limiting cylinder 3 is a cylinder, and the limiting holes 301 are multiple and uniformly distributed along the circumferential direction of the cylinder; the executing parts 4, the guide grooves 1 and the limiting holes 301 are arranged in a one-to-one correspondence mode.

When the limiting cylinder 3 is a cylinder, the rotating disc 2 can also be in the form of a disc, and the disc and the cylinder are coaxially arranged.

In one embodiment, the number of the limiting holes 301, the actuating members 4 and the guide grooves 1 is six, see fig. 1, 2, 8 and 9. Of course, the number and distribution of the limiting holes 301, the actuators 4 and the guide grooves 1 are not limited by the examples. For example, the number of the limiting holes 301, the number of the executing parts 4 and the number of the guide grooves 1 can be two respectively, so that two-point rounding is realized; or the number of the limiting holes 301, the number of the executing pieces 4 and the number of the guide grooves 1 can be respectively three, so that three-point rounding is realized; further alternatively, it is also possible to realize a full circle of any number of points such as a full circle of four points, a full circle of twelve points, a full circle of twenty-four points, and the like. The higher the precision requirement is, the more points can be adopted for rounding; the lower the precision requirement is, the fewer points can be adopted for rounding, and waste caused by production of low-precision products by high-precision equipment is avoided.

According to the embodiment of the present invention, please refer to fig. 1, the actuating member 4 is a shaping block, the shaping block is a symmetrical structure, and a mounting groove is formed in the middle of the shaping block, and the edge of the turntable 2 is embedded into the mounting groove, so that the guide groove 1 corresponds to the mounting groove; the shaping block is also formed with a coupling hole so that a third coupling member 20 couples the shaping block and the turntable 2 through the coupling hole and the guide groove 1. Of course, it should be noted that the structure of the actuating member 4 is not limited by the examples provided herein, as long as the actuating member 4 can apply a force to the pipe to reshape the pipe as the turntable 2 rotates. Wherein, the shaping block can have a plurality of different sizes, and then under the condition of not changing other parts, through adopting different shaping blocks, can adapt to the pipe fitting shaping of different sizes.

In one embodiment, the third link 20 is in the form of a pin, and the shaping block is mounted to the guide groove 1 by the pin such that the shaping block can move along the guide groove 1.

According to one embodiment of the invention, when a clockwise torque is applied to the disc, the disc rotates around its axis and pushes the pin to move along the guide groove 1 from the proximal point 101 to the distal point 102, the pin moving while pushing the shaping block. Due to the function of the limiting hole 301 on the limiting cylinder 3, the shaping block can only move along the radial direction of the limiting cylinder 3. Because the six near end points 101 of the disc have the same distance from the axis of the disc, the six far end points 102 have the same distance from the axis of the disc, and the six near end points 101 form the same archimedes spiral track in the process of moving to the six far end points 102, when the circle rotates clockwise around the axis of the circle, the six points at the outermost ends of the six shaping blocks are on the same circle, and the center of the circle is on the axis of the disc. Along with the clockwise rotation of the disc, the diameter of a circle where six points at the outermost ends of the six shaping blocks are located is gradually increased; when the disc rotates counterclockwise, the diameter of the circle on which the six points of the outermost ends of the six shaping blocks are located is reduced.

The pipe fitting shaping device provided by the embodiment of the invention is easy to operate, only needs to apply positive and negative torques, and is easy to popularize.

The process of shaping the pipe by adopting the pipe shaping device is roughly as follows:

mounting the flange 21 on a support, tightening a guide screw as the second connecting member 16, and pressing the flange 21 on the support by using the pressure corner piece 17;

the pipe to be reshaped is placed on the flange 21, and the round tube 19 to be welded is placed on the flange 21, taking the welding of the round tube 19 as an example. Of course, it should be noted that the pipe shaping device according to the embodiment of the present invention may be used for shaping the circular pipe 19 in the welding process, and may also be used in any other occasions where shaping is needed.

Apply the moment of torsion to threaded shaft 14 through application of force pole 15, threaded shaft 14 drives second transmission shaft 12 and rotates, and second transmission shaft 12 is through first transmission shaft 9 application moment of torsion to the disc, and the disc rotates drive shaping block and uses spacing section of thick bamboo 3 axis as the axle center and outwards move simultaneously along the radial of spacing section of thick bamboo 3, and shaping block is at the removal in-process and is exerted pressure for pipe 19, realizes the whole circle of pipe 19. When the roundness meets the requirement, the application of the torque is stopped, and at the moment, the shaping block is kept at the position where the application of the torque is stopped due to the self-locking effect of the threads between the threaded shaft 14 and the bearing seat 13, so that the roundness of the circular tube 19 is kept unchanged.

After the welding is started, the welding machine is parked for a period of time, after the round pipe 19 to be welded is stable in structure, reverse torque is applied through the force application rod 15, the shaping block is enabled to contract inwards, the round pipe 19 can be taken down by loosening the guide screw and taking down the pressure angle piece 17, and then the next welding operation can be carried out.

Wherein, for the circular tube 19, after being completely round, the coaxial with the flange 21 can be realized, and no additional axial symmetry adjustment is needed.

The above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. A pipe shaping device, comprising:

the limiting cylinder is provided with a plurality of limiting holes which are uniformly distributed along the circumferential direction of a set circumference;

the rotary disc is positioned in the limiting cylinder, is suitable for rotating along the set circumference, and is provided with a guide groove;

the actuating piece is suitable for moving relative to the guide groove along the extending direction of the guide groove and extends out of the limiting cylinder through the limiting hole, the limiting hole is used for limiting the actuating piece to rotate along the set circumference, the actuating piece, the guide groove and the limiting hole actuating piece are arranged in a one-to-one correspondence mode, the actuating piece is a shaping block, and a connecting hole is formed in the shaping block, so that a third connecting piece is connected with the shaping block and the rotary disc through the connecting hole and the guide groove;

the driving part is used for driving the turntable to rotate so that the actuating part moves along the guide groove back to or towards the rotating axis of the turntable;

the supporting piece comprises a mounting flat plate, the mounting flat plate comprises a first surface and a second surface which are oppositely arranged, and the limiting cylinder is fixed on the first surface;

the driving part comprises a first transmission shaft, the first end of the first transmission shaft is connected with the turntable, and the second end of the first transmission shaft extends out of the second surface.

2. The pipe shaping device according to claim 1, wherein the restraining cylinder is provided with a through hole extending in an axial direction parallel to itself, and a first connecting member passes through the through hole and fixes the restraining cylinder to the first surface.

3. The tubular conforming device of claim 1 wherein the drive member further comprises:

4. A tubular shaping device according to claim 3, wherein the first end of the first drive shaft is in a positive fit with the first oblong hole of the rotary plate via a first positive stop portion, the second end of the first drive shaft is in a positive fit with the second oblong hole of the second drive shaft via a second positive stop portion, and the first drive shaft is formed with a shoulder that is in a positive fit with the first surface.

5. The pipe conforming device of claim 3 wherein the support further comprises:

6. The pipe reforming device of claim 1, further comprising a support ring for coaxially aligning the flange to be installed and the restraining barrel, a pressure horn and a second connector for securing the flange and the support ring to the first surface.

7. The pipe shaping device according to any one of claims 1 to 6, wherein the limiting cylinder is a cylinder, and the limiting holes are distributed uniformly along a circumferential direction of the cylinder.

8. The pipe fitting reshaping device according to claim 7, wherein the number of the limiting hole, the number of the actuating member and the number of the guide groove are six.

9. The pipe fitting reshaping device according to any one of claims 1 to 6, wherein the reshaping block has a symmetrical structure, a mounting groove is formed in the middle of the reshaping block, and the edge of the rotating disc is embedded into the mounting groove, so that the guide groove corresponds to the mounting groove.