Pipe rounding device

Abstract

The utility model discloses a pipe rounding device, and belongs to the technical field of pipe production. The trimming device comprises a rounding frame body, an outer trimming assembly and an inner trimming assembly, and the rounding frame body comprises a hole body used for enclosing a pipe body; the outer finishing assembly comprises a plurality of outer finishing units connected with the rounding frame body, each outer finishing unit comprises a rounding roller used for being matched with the outer wall of the pipe body, and the multiple outer finishing units are arranged around the hole body at equal intervals. The inner trimming assembly comprises a self-propelled frame body arranged in the pipe body in a penetrating mode, a magnetic attraction unit and a plurality of inner trimming units, each inner trimming unit comprises a bendable shear type support and a rotating wheel used for being matched with the inner wall of the pipe body, the two ends of each shear type support are connected with the corresponding rotating wheel and the self-propelled frame body respectively, and the rotating wheels are matched with the rounding rollers in a one-to-one correspondence mode; and a gap for shaping the pipe body is formed. The inner wall of the pipe body can be supported, and the pipe body is prevented from being deformed and damaged by an external shaping assembly in the rounding process.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a pipe rounding device. Background Technology

[0002] Reinforced thermoplastic pipes (RTP pipes) are a type of high-pressure plastic composite pipe. They feature excellent flexibility, corrosion resistance, high pressure resistance, impact resistance, wear resistance, light weight, easy connection, coiling capability, and rapid long-distance jointless laying. They can effectively overcome the corrosion problems of steel pipes and the pressure resistance problems of plastic pipes. They can be used in oil and gas extraction, high-pressure long-distance natural gas transportation, and various pipeline applications requiring high-pressure transportation of media.

[0003] RTP tubes typically consist of a plastic interlayer. This interlayer is water-cooled and shaped after injection molding. However, the shaped plastic interlayer may bend or flatten, causing it to lose its roundness, which is detrimental to the formation of subsequent composite layers. Existing rounding devices can only trim the tube from the outside, and are prone to deforming the tube. Utility Model Content

[0004] In view of this, it is necessary to provide a pipe rounding device to solve the problem that the plastic sandwiched pipe of existing RTP pipe is prone to deformation during the rounding process.

[0005] This utility model provides a tube rounding device, comprising:

[0006] A circular frame, the circular frame including a hole for enclosing the tube;

[0007] An external trimming assembly includes multiple external trimming units connected to the circular frame, each external trimming unit including a circular roller for engaging with the outer wall of the tube body, and the multiple external trimming units are equidistantly arranged around the hole body.

[0008] The internal trimming assembly includes a self-propelled frame, a magnetic suction unit, and multiple internal trimming units inserted into the tube. Each internal trimming unit includes a bendable scissor-type support and a rotating wheel for engaging with the inner wall of the tube. The two ends of the scissor-type support are connected to the rotating wheel and the self-propelled frame, respectively. The rotating wheel and the rounding roller are matched one-to-one to form a gap for shaping the tube. The magnetic suction unit is disposed on the self-propelled frame to magnetically attract the rounding frame.

[0009] Furthermore, the scissor-type support includes a main support rod and a secondary support rod. One end of the main support rod is hinged to the self-propelled frame, and the other end of the main support rod is rotatably connected to the rotating wheel. One end of the secondary support rod is hinged to the middle of the main support rod, and the other end of the secondary support rod can move along the axial direction of the hole to adjust the tilt angle of the main support rod relative to the axis of the hole.

[0010] Furthermore, an adjustment unit is provided between the secondary support rod and the self-propelled frame. The adjustment unit includes a rotatable lead screw and a moving part. The lead screw is rotatably connected to the self-propelled frame. The inner side of the moving part is threadedly connected to the lead screw. The other ends of the plurality of secondary support rods are respectively hinged to the outer side of the moving part.

[0011] Furthermore, the magnetic suction unit includes a disk, which is disposed at the end of the self-propelled frame and fixedly connected to the self-propelled frame, and the disk is capable of magnetic attraction with the circular frame.

[0012] Furthermore, the external trimming unit also includes an adjustable rotating bracket, the two ends of which are connected to the rounding roller and the rounding frame respectively, and the rotating bracket can adjust the distance between the rounding roller and the tube body.

[0013] Furthermore, the external trimming assembly also includes a control unit, which includes a threaded rod. The middle part of the threaded rod is threadedly connected to the circular frame, and one end of the threaded rod is movably connected to the circular roller. The relatively telescopic threaded rod can push the circular roller closer to or further away from the tube body.

[0014] Furthermore, the other end of the threaded rod is provided with a handwheel or a rotating rod.

[0015] Furthermore, the circular frame also includes a main support frame and a turntable, the turntable being rotatably connected to the main support frame, the hole being disposed on the turntable, and the outer trimming unit being connected to the turntable.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The present invention provides a pipe rounding device, which includes an external trimming assembly. The external trimming assembly includes multiple external trimming units connected to the rounding frame. Each external trimming unit includes a rounding roller. The rounding roller cooperates with the outer wall of the pipe to adjust the shape of the pipe in real time, ensuring that the outer wall of the pipe reaches an ideal circular state. Multiple external trimming units are equidistantly arranged around the hole. Multiple rounding rollers can apply force evenly through multi-point trimming, making the force on the outer wall of the pipe more uniform, thereby avoiding local deformation caused by excessive force at a single point.

[0018] (2) This utility model provides a pipe rounding device, which includes an internal trimming assembly. The internal trimming assembly comprises a self-propelled frame, a magnetic suction unit, and multiple internal trimming units. The self-propelled frame is inserted into the pipe body. Each internal trimming unit includes a bendable scissor-type support and a rotating wheel for engaging with the inner wall of the pipe. The two ends of the scissor-type support are connected to the rotating wheel and the self-propelled frame, respectively. The rotating wheel on the inner side can engage with the rounding roller on the outer side to form a gap for shaping the pipe body. The scissor-type support has a certain degree of flexibility and can be flexibly adjusted according to the shape changes of the pipe body. By adjusting the gap, the rotating wheel of the internal trimming unit is always engaged with the inner wall of the pipe body, thereby effectively avoiding out-of-roundness caused by deformation of the inner wall of the pipe body. The rounding roller and the rotating wheel ensure that the inner and outer walls of the pipe body maintain roundness synchronously through external and internal trimming actions. Under the coordination of the two, the pipe body is fully trimmed, which not only eliminates deformation but also avoids the imbalance between external and internal pressure, ensuring the high precision and stability of the pipe body. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the circular frame and the outer trimming assembly in this utility model;

[0022] Figure 3 This is a schematic diagram of the internal trimming component in this utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the internal trimming component in this utility model. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the internal trimming component in this utility model. Figure 3 .

[0025] In the diagram, 100 is the circular frame; 110 is the hole; 120 is the main support frame; and 130 is the turntable.

[0026] 200. External trimming assembly; 210. External trimming unit; 211. Rounding roller; 212. Rotating bracket; 220. Adjustment unit; 221. Threaded rod;

[0027] 300. Internal trimming assembly; 310. Self-propelled frame; 320. Magnetic suction unit; 321. Disk; 330. Internal trimming unit; 331. Scissor bracket; 331a. Main support rod; 331b. Secondary support rod; 332. Rotary wheel; 340. Adjustment unit; 341. Lead screw; 342. Moving part;

[0028] 400. Pipe body. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0030] This embodiment of a pipe rounding device relates to the field of pipe production technology. By setting an internal trimming component inside the pipe body 400 to cooperate with the external trimming component, the inner wall of the pipe body 400 can be supported, preventing the external trimming component from causing deformation and damage to the pipe body 400 during the rounding process.

[0031] Please see Figures 1 to 5 This embodiment of a pipe rounding device includes: a rounding frame 100, an outer trimming component 200, and an inner trimming component 300. The rounding frame 100 serves as a supporting foundation, providing a connection base for the outer trimming component 200 and the inner trimming component 300. The outer trimming component 200 can round and shape the pipe 400, restoring its roundness and concentricity. The inner trimming component 300 can cooperate with the outer trimming component 200, supporting the outer trimming component 200 and assisting in the rounding of the pipe 400.

[0032] The circular support 100 provides fixed support for the tube 400, ensuring that the tube 400 maintains a stable position during the circularization process. The circular support 100 has a hole 110 that surrounds the tube 400, ensuring that the tube 400 is always in the correct circular position and preventing external interference from causing displacement or irregular deformation.

[0033] The external trimming assembly 200 includes multiple external trimming units 210 connected to the rounding frame 100. Each external trimming unit 210 includes a rounding roller 211. The rounding roller 211 engages with the outer wall of the tube 400 to adjust the shape of the tube 400 in real time, ensuring that the outer wall of the tube 400 achieves an ideal circular shape. The multiple external trimming units 210 are equidistantly arranged around the hole 110. The multiple rounding rollers 211 can apply force evenly through multi-point trimming, making the force on the outer wall of the tube 400 more uniform, thereby avoiding local deformation caused by excessive force at a single point.

[0034] The inner trimming assembly 300 includes a self-propelled frame 310, a magnetic suction unit 320, and multiple inner trimming units 330. The self-propelled frame 310 is inserted into the tube 400. Each inner trimming unit 330 includes a bendable scissor-type support 331 and a rotating wheel 332 for engaging with the inner wall of the tube 400. The two ends of the scissor-type support 331 are connected to the rotating wheel 332 and the self-propelled frame 310, respectively. The inner rotating wheel 332 can engage with the outer rounding roller 211 to form a gap for shaping the tube 400. The scissor-type support 331 has a certain degree of flexibility and can be flexibly adjusted according to the shape changes of the tube 400. Adjusting the gap ensures that the rotating wheel 332 of the inner trimming unit 330 always engages with the inner wall of the tube 400, thereby effectively preventing out-of-roundness caused by deformation of the inner wall of the tube 400. The rounding roller 211 and the rotating wheel 332 ensure that the inner and outer walls of the tube 400 maintain roundness synchronously through external and internal finishing actions. With their coordination, the tube 400 is fully finished, which not only eliminates deformation but also avoids the imbalance between external and internal pressure, ensuring the high precision and stability of the tube 400.

[0035] The magnetic unit 320 is mounted on the self-propelled frame 310. The magnetic unit 320 uses adsorption to ensure that the inner trimming component 300 is firmly fixed inside the tube body 400 during operation, preventing displacement and ensuring trimming accuracy.

[0036] In some embodiments, please refer to Figures 3 to 5 The scissor-type support 331 includes a main support rod 331a and a secondary support rod 331b. One end of the main support rod 331a is hinged to the self-propelled frame 310, and the other end is rotatably connected to a rotating wheel 332. The rotating wheel 332 can rotate relative to the tube 400 and cooperates with the circular roller 211 to correct the tube 400, ensuring that the inner and outer walls of the tube 400 maintain circularity simultaneously. One end of the secondary support rod 331b is hinged to the middle of the main support rod 331a, and the other end of the secondary support rod 331b can move along the axial direction of the hole 110, thereby adjusting the tilt angle of the main support rod 331a relative to the axis of the hole 110.

[0037] This angle adjustment process allows for precise adjustment of the position of the roller 332 relative to the pipe 400, based on its different dimensions or shapes. The coordinated arrangement of the main support rod 331a and the auxiliary support rod 331b enhances the adaptability to the inner wall shape of the pipe 400 during the trimming process. Especially for pipes of different diameters or shapes, the trimming angle can be easily adjusted to ensure that the roller 332 of the inner trimming unit 330 is always in precise contact with the inner wall of the pipe 400, avoiding uneven or inaccurate trimming results due to improper tilt angles.

[0038] In some embodiments, please continue reading Figures 3 to 5An adjustment unit 340 is provided between the secondary support rod 331b and the self-propelled frame 310. The adjustment unit 340 includes a rotatable lead screw 341 and a moving part 342. The lead screw 341 is rotatably connected to the self-propelled frame 310, and the inner side of the moving part 342 is threadedly connected to the lead screw 341. The other ends of the multiple secondary support rods 331b are respectively hinged to the outer side of the moving part 342. The threaded connection between the lead screw 341 and the moving part 342 allows for precise adjustment of the position of the secondary support rod 331b by rotating the lead screw 341, thereby changing the tilt angle of the main support rod 331a. The other end of the secondary support rod 331b is hinged to the moving part 342, ensuring that the angle adjustment is smooth and controllable. By rotating the lead screw 341, the length or position of the secondary support rod 331b can be precisely adjusted, thereby changing the tilt angle of the main support rod 331a and the axis of the tube body 400 and the hole body 110.

[0039] As a further embodiment, the magnetic suction unit 320 includes a disk 321, which is disposed at the end of the self-propelled frame 310 and fixedly connected to the self-propelled frame 310. The disk 321 is a permanent magnet, and the magnetic attraction between the disk 321 and the rounding frame 100 can firmly lock the relative position of the self-propelled frame 310 and the rounding frame 100, ensuring that the self-propelled frame 310 cannot detach from the rounding frame 100 on its own during the entire pipe rounding process, thus preventing abnormal loosening and displacement.

[0040] This magnetic connection provides a non-mechanical fixing method, avoiding the loosening or mechanical wear problems that may occur with traditional mechanical fixing methods.

[0041] In some embodiments, please refer to Figure 1 and Figure 2 The outer trimming unit 210 also includes an adjustable rotating bracket 212. The two ends of the rotating bracket 212 are connected to the circular roller 211 and the circular frame 100, respectively. By adjusting the rotating bracket 212, the distance between the circular roller 211 and the tube 400 can be adjusted to ensure uniform and precise contact force between the circular roller 211 and the outer wall of the tube 400. The rotating bracket 212 controls the precise distance of the circular roller 211 by adjusting the positions of its two connection points, ensuring that it always maintains optimal contact with the outer wall of the tube 400.

[0042] Since the diameter, shape, or forming process of the pipe may vary slightly, the rotating bracket 212 in the outer trimming unit 210 allows for adjustment of the position of the rounding roller 211. This enables the rounding roller 211 to adapt to pipes of different diameters or shapes, thereby ensuring that the trimming process meets the requirements of different pipe specifications.

[0043] By adjusting the distance between the rounding roller 211 and the outer wall of the tube 400, the rotating bracket 212 ensures that the outer trimming unit 210 can trim the outer wall of the tube 400 evenly. At different trimming stages, the spacing can be adjusted according to the specific needs of the tube material to avoid localized deformation or damage caused by uneven pressure or excessive concentrated force.

[0044] As a further embodiment, the other end of the threaded rod 221 is provided with a handwheel or a rotating rod. The design of the handwheel or rotating rod allows the operator to easily and intuitively control the rotation of the threaded rod 221, thereby adjusting the position or angle of the component connected to it.

[0045] The handwheel or rotating lever provides a large rotational torque, enabling more precise adjustment of the threaded rod 221. This allows for finer adjustments, enabling minute adjustments and ensuring the equipment achieves the required accuracy.

[0046] By using a handwheel or rotary lever, operators can easily perform continuous rotational adjustments, avoiding the fatigue or operational difficulties that may occur when using traditional tools or adjusting directly by hand. The rotary lever and handwheel can be designed ergonomically, making adjustments more comfortable for the operator and reducing fatigue from prolonged operation.

[0047] In some embodiments, please refer to Figure 1 The circular frame 100 also includes a main support frame 120 and a turntable 130. The turntable 130 is rotatably connected to the main support frame 120 via bearings. The turntable 130 can rotate relative to the main support frame 120 to adjust the angle of the outer trimming component 200 relative to the tube body 400.

[0048] The rotatable connection between the turntable 130 and the main support frame 120 allows for more flexible adjustment of the direction or angle of the entire circular frame 100 during pipe trimming. The turntable 130 provides a rotating platform, enabling convenient adjustment of the relative positions of the outer trimming unit 210 and the bore 110, thereby achieving precise trimming of the tank 400.

[0049] The orifice 110 is mounted on the turntable 130, which can rotate, allowing the circular frame 100 to freely adjust the position of the pipe during the trimming process. The rotation of the turntable 130 enables the pipe to be trimmed at multiple angles without the need to reinstall or disassemble the outer trimming unit 210, simplifying the pipe connection and trimming process.

[0050] Workflow: First, place the pipe to be rounded into the rounding frame 100. Ensure the pipe enters the hole 110 of the rounding frame 100 and is aligned with the outer trimming unit 210. Then, insert the inner trimming assembly 300 into the pipe 400, so that the rotating wheel 332 and the rounding roller 211 cooperate with each other. Next, adjust the distance between the rounding roller 211 of the outer trimming unit 210 and the outer wall of the pipe using a handwheel or rotating rod to ensure uniform contact force between the rounding roller 211 and the pipe, ensuring outer wall shaping. Then, adjust the inner trimming unit 330 according to the inner diameter and shape of the pipe. Manually adjust the inner trimming unit 330 to ensure its rotating wheel 332 aligns with the inner wall of the pipe, and adjust the angle of the bracket using the scissor bracket 331 to provide appropriate support and trimming for the inner wall of the pipe 400. Finally, the tube 400 passes through the tube rounding device along the predetermined track. The rounding roller 211 and the rotating wheel 332 ensure that the inner and outer walls of the tube 400 maintain roundness synchronously through external and internal finishing actions.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A pipe rounding device, characterized in that, include: A circular frame, the circular frame including a hole for enclosing the tube; An external trimming assembly includes multiple external trimming units connected to the circular frame, each external trimming unit including a circular roller for engaging with the outer wall of the tube body, and the multiple external trimming units are equidistantly arranged around the hole body. The internal trimming assembly includes a self-propelled frame, a magnetic suction unit, and multiple internal trimming units inserted into the tube. Each internal trimming unit includes a bendable scissor-type support and a rotating wheel for engaging with the inner wall of the tube. The two ends of the scissor-type support are connected to the rotating wheel and the self-propelled frame, respectively. The rotating wheel and the rounding roller are matched one-to-one to form a gap for shaping the tube. The magnetic suction unit is disposed on the self-propelled frame to magnetically attract the rounding frame.

2. The pipe rounding device according to claim 1, characterized in that, The scissor-type support includes a main support rod and a secondary support rod. One end of the main support rod is hinged to the self-propelled frame, and the other end of the main support rod is rotatably connected to the rotating wheel. One end of the secondary support rod is hinged to the middle of the main support rod, and the other end of the secondary support rod can move along the axial direction of the hole to adjust the tilt angle of the main support rod relative to the axis of the hole.

3. The tube rounding device according to claim 2, characterized in that, An adjustment unit is provided between the secondary support rod and the self-propelled frame. The adjustment unit includes a rotatable lead screw and a moving part. The lead screw is rotatably connected to the self-propelled frame. The inner side of the moving part is threadedly connected to the lead screw. The other ends of the multiple secondary support rods are respectively hinged to the outer side of the moving part.

4. The pipe rounding device according to claim 1, characterized in that, The magnetic unit includes a disk, which is disposed at the end of the self-propelled frame and fixedly connected to the self-propelled frame. The disk is capable of magnetic attraction to the circular frame.

5. A pipe rounding device according to claim 1, characterized in that, The external trimming unit also includes an adjustable rotating bracket, the two ends of which are connected to the rounding roller and the rounding frame respectively, and the rotating bracket can adjust the distance between the rounding roller and the tube body.

6. The tube rounding device according to claim 5, characterized in that, The external trimming assembly also includes a control unit, which includes a threaded rod. The middle part of the threaded rod is threadedly connected to the circular frame, and one end of the threaded rod is movably connected to the circular roller. The relatively telescopic threaded rod can push the circular roller closer to or further away from the tube body.

7. A pipe rounding device according to claim 6, characterized in that, The other end of the threaded rod is equipped with a handwheel or a rotating rod.

8. A pipe rounding device according to claim 1, characterized in that, The circular frame also includes a main support frame and a turntable. The turntable is rotatably connected to the main support frame. The hole is set on the turntable, and the outer trimming unit is connected to the turntable.

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