A seamless steel pipe end flattening device

Abstract

This application relates to the field of seamless steel pipe technology and discloses a seamless steel pipe end flattening device, including an upper pressure plate and a bearing plate disposed below the upper pressure plate. The upper pressure plate and the bearing plate each have a receiving groove inside. Mounting plates are fixedly installed on the outer walls of the upper pressure plate and the bearing plate on one side of the receiving groove. Multiple sets of heating tubes are fixedly installed on the inner wall of each mounting plate, with each set of heating tubes located inside a corresponding receiving groove. A temperature sensor is installed on the outer wall of each mounting plate. A vertical moving mechanism is disposed above the upper pressure plate. The heating tubes can heat the upper pressure plate and the bearing plate respectively. A steel pipe positioning mechanism can position the steel pipe. Then, the vertical moving mechanism drives the upper pressure plate to move vertically, thereby flattening the end of the steel pipe with the upper pressure plate and the bearing plate. Flattening under heating conditions makes the steel pipe end more prone to deformation and reduces elasticity, maintaining the flattened state of the steel pipe.

Description

Technical Field

[0001] This application relates to the field of seamless steel pipe technology, specifically to a seamless steel pipe end flattening device. Background Technology

[0002] Seamless steel pipes are steel pipes without any gaps on their surface. They are made by piercing a whole round steel bar. They are mainly used as oil and geological drilling pipes, degraded pipes for petrochemicals, boiler tubes, bearing tubes, and high-precision structural steel pipes for automobiles, tractors, and aviation. During the production and processing of seamless steel pipes, the ends need to be flattened according to the intended use. A special flattening device is used for this process.

[0003] Currently, after the ends of steel pipes are flattened, the ends of the steel pipes may spring back, resulting in the flattened parts of the steel pipe ends not fitting properly. Utility Model Content

[0004] The purpose of this application is to provide a seamless steel pipe end flattening device, which solves the problem mentioned in the background art that the end of the steel pipe may spring back after flattening, resulting in insufficient fit of the flattened part of the steel pipe end.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This application provides a seamless steel pipe end flattening device, including an upper pressure plate and a bearing plate disposed below the upper pressure plate. The upper pressure plate and the bearing plate are respectively provided with a receiving groove inside. An mounting plate is fixedly installed on the outer wall of the upper pressure plate and the bearing plate on one side of the receiving groove. Multiple sets of heating tubes are fixedly installed on the inner wall of each mounting plate. Each set of heating tubes is located inside the corresponding receiving groove. A temperature sensor is installed on the outer wall of each mounting plate. A vertical moving mechanism is provided above the upper pressure plate, and a steel pipe positioning mechanism is provided on one side of the bearing plate.

[0007] By adopting the above technical solution, the heating tube can heat the upper pressure plate and the bearing plate respectively. The steel pipe positioning mechanism can position the steel pipe. Then, the vertical moving mechanism drives the upper pressure plate to move vertically. Subsequently, the upper pressure plate and the bearing plate can flatten the end of the steel pipe. When the steel pipe is flattened under the heating of the heating tube, the end of the steel pipe is more likely to deform and the elasticity is reduced, thus maintaining the flattened state of the steel pipe.

[0008] Optionally, the steel pipe positioning mechanism includes a rotating plate, with two sets of L-shaped blocks fixedly installed on the upper end of the rotating plate. Electric push rods are fixedly installed on the upper ends of the two sets of L-shaped blocks respectively, and the telescopic end of each electric push rod slides through the L-shaped block.

[0009] By adopting the above technical solution, the rotating plate can fix the L-shaped plate, and the L-shaped plate can fix the electric push rod.

[0010] Optionally, a limiting plate is fixedly installed on the telescopic end of each set of electric push rods, and a limiting groove is opened on the lower side of the limiting plate, the limiting groove being arranged in an inverted V shape.

[0011] By adopting the above technical solution, the limit plate can be moved vertically by an electric push rod, and the V-shaped limit groove on the limit plate limits the steel pipes of different diameters.

[0012] Optionally, a base plate is fixedly installed at the lower end of the pressure plate, and a backing plate is fixedly installed at the upper end of the base plate. An arc-shaped movable groove is provided on one side of the backing plate.

[0013] By adopting the above technical solution, the base plate can fix the pressure plate and the abutment plate, and the arc-shaped movable groove on the abutment plate can limit one end of the steel pipe. The arc-shaped movable groove can facilitate the rotation of the steel pipe when it rotates.

[0014] Optionally, the vertical moving mechanism includes an L-shaped frame fixedly installed on the upper part of the base plate, a hydraulic rod fixedly installed on the upper end of the L-shaped frame, the telescopic end of the hydraulic rod slidingly passing through the L-shaped frame, and the telescopic end of the hydraulic rod being fixedly installed with the upper pressure plate.

[0015] By adopting the above technical solution, the base plate can fix the L-shaped frame, the L-shaped frame can fix the hydraulic rod, and the hydraulic rod can drive the upper pressure plate to move vertically.

[0016] Optionally, a stepper motor is installed at the lower end of the base plate, and the output shaft of the stepper motor is fixedly installed with the rotating plate.

[0017] By adopting the above technical solution, the base plate can fix the stepper motor, and the stepper motor can drive the rotating plate to rotate, which facilitates the flattening of both ends of the steel pipe and reduces the workload of workers to handle the steel pipe and change sides.

[0018] Optionally, the upper and lower pressure plates are made of tungsten metal.

[0019] By adopting the above technical solution, and using tungsten metal for the upper and lower pressure plates, not only are the hardness requirements for flattening steel pipes met, but the thermal conductivity is also good.

[0020] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0021] The technical solution of this application uses heating pipes to heat the upper pressure plate and the bearing plate respectively. The steel pipe positioning mechanism can position the steel pipe, and then the vertical moving mechanism drives the upper pressure plate to move vertically. Then the upper pressure plate and the bearing plate can flatten the end of the steel pipe. When the steel pipe is flattened under the heating of the heating pipe, the end of the steel pipe is more likely to deform and the elasticity is reduced, thus maintaining the flattened state of the steel pipe. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is an axial view schematic diagram of a seamless steel pipe end flattening device according to this application;

[0024] Figure 2 This is a right-side schematic diagram of a seamless steel pipe end flattening device according to this application;

[0025] Figure 3 This is a front sectional view of the upper pressure plate of a seamless steel pipe end flattening device according to this application;

[0026] Figure 4 This is a top sectional view of the backing plate of a seamless steel pipe end flattening device according to this application.

[0027] In the diagram: 1. Upper pressure plate; 2. Pressure plate; 3. Storage slot; 4. Mounting plate; 5. Heating tube; 6. Temperature sensor; 7. Base plate; 8. L-shaped frame; 9. Hydraulic rod; 10. Stepper motor; 11. Rotating plate; 12. L-shaped block; 13. Electric push rod; 14. Limiting plate; 15. Support plate; 16. Arc-shaped movable groove; 17. Limiting groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4This application provides a technical solution: a seamless steel pipe end flattening device, including an upper pressure plate 1 and a bearing plate 2 disposed below the upper pressure plate 1. The upper pressure plate 1 and the bearing plate 2 are respectively provided with a receiving groove 3. The outer walls of the upper pressure plate 1 and the bearing plate 2 located on one side of the receiving groove 3 are respectively fixedly installed with mounting plates 4. Multiple sets of heating tubes 5 are respectively fixedly installed on the inner wall of each mounting plate 4. Each set of heating tubes 5 is located inside the corresponding receiving groove 3. Temperature sensors 6 are respectively installed on the outer wall of each mounting plate 4. A vertical moving mechanism is provided above the upper pressure plate 1. A steel pipe positioning mechanism is provided on one side of the bearing plate 2. The upper pressure plate 1 and the lower pressure plate are made of tungsten metal.

[0030] In the technical solution of this application, the heating tube 5 can heat the upper pressure plate 1 and the bearing plate 2 respectively. The steel pipe positioning mechanism can position the steel pipe, and then the vertical moving mechanism drives the upper pressure plate 1 to move vertically. Then the upper pressure plate 1 and the bearing plate 2 can flatten the end of the steel pipe. When the steel pipe is flattened under the heating of the heating tube 5, the end of the steel pipe is more likely to deform and the elasticity is reduced, thus maintaining the flattened state of the steel pipe. The upper pressure plate 1 and the lower pressure plate are made of tungsten metal, which not only meets the hardness requirements for flattening the steel pipe, but also has good thermal conductivity.

[0031] In the technical solution of this application, such as Figure 1 and Figure 4 As shown, a base plate 7 is fixedly installed at the lower end of the pressure plate 2, and a support plate 15 is fixedly installed at the upper end of the base plate 7. An arc-shaped movable groove 16 is provided on one side of the support plate 15. The base plate 7 can fix the pressure plate 2 and the support plate 15, and the arc-shaped movable groove 16 on the support plate 15 can limit one end of the steel pipe. The arc-shaped movable groove 16 can facilitate the rotation of the steel pipe when it rotates.

[0032] In the technical solution of this application, such as Figure 1 and Figure 2 As shown, the vertical moving mechanism includes an L-shaped frame 8 fixedly installed on the upper end of the base plate 7. A hydraulic rod 9 is fixedly installed on the upper end of the L-shaped frame 8. The telescopic end of the hydraulic rod 9 slides through the L-shaped frame 8. The telescopic end of the hydraulic rod 9 is fixedly installed with the upper pressure plate 1. The base plate 7 can fix the L-shaped frame 8, and the L-shaped frame 8 can fix the hydraulic rod 9. The hydraulic rod 9 can drive the upper pressure plate 1 to move vertically.

[0033] In the technical solution of this application, such as Figure 1 and Figure 2As shown, the steel pipe positioning mechanism includes a rotating plate 11. Two sets of L-shaped blocks 12 are fixedly installed on the upper end of the rotating plate 11. Electric push rods 13 are fixedly installed on the upper ends of the two sets of L-shaped blocks 12 respectively. The telescopic end of each electric push rod 13 slides through the L-shaped block 12. The rotating plate 11 can fix the L-shaped block 12, and the L-shaped block 13 can fix the electric push rod 13. A limit plate 14 is fixedly installed on the telescopic end of each set of electric push rods 13. A limit groove 17 is formed on the lower side of the limit plate 14. The limiting groove 17 is set in an inverted V shape. The limiting plate 14 can be moved vertically by the electric push rod 13. The V-shaped limiting groove 17 on the limiting plate 14 limits the steel pipes of different diameters. A stepper motor 10 is installed at the lower end of the base plate 7. The output shaft of the stepper motor 10 is fixedly installed with the rotating plate 11. The base plate 7 can fix the stepper motor 10. The stepper motor 10 can drive the rotating plate 11 to rotate, which facilitates the flattening operation of both ends of the steel pipe and reduces the workload of workers to pick up and change the sides of the steel pipe.

[0034] During use, the heating tube 5 preheats the storage slot 3 of the upper pressure plate 1 and the bearing plate 2, and the heating temperature is monitored in real time by the temperature sensor 6 to ensure that the upper pressure plate 1 and the bearing plate 2 reach the preset working temperature.

[0035] The seamless steel pipe to be flattened is placed horizontally in the arc-shaped movable groove 16 of the abutment plate 15 on one side of the pressure plate 2, with one end of the steel pipe in contact with the arc-shaped movable groove 16, ensuring that the axis of the steel pipe is consistent with the flattening direction.

[0036] The telescopic end of the electric push rod 13 drives the limiting plate 14 to descend. The inverted V-shaped limiting groove 17 on the lower side of the limiting plate 14 contacts the outer wall of the steel pipe, which centers and fixes the steel pipe axially to prevent the steel pipe from shifting during the flattening process.

[0037] If it is necessary to flatten both ends of the steel pipe, the stepper motor 10 drives the rotating plate 11 to rotate 180°, rotating the other end of the steel pipe to the flattening station, and repeating the above positioning steps.

[0038] The extension end of the hydraulic rod 9 pushes the upper pressure plate 1 downward. Under the dual action of pressure and heating, the metal at the end of the steel pipe undergoes plastic deformation and is gradually flattened into the target shape. Heating reduces the yield strength of the steel pipe material, reduces elastic recovery, and improves the flattening and forming accuracy.

[0039] During the flattening process, temperature sensor 6 continuously monitors the temperature of upper pressure plate 1 and bearing plate 2, and automatically adjusts the power of heating tube 5 through the control system to ensure that the temperature is stable within the process requirements.

[0040] After reaching the set flattening depth, the hydraulic rod 9 maintains pressure for a period of time, allowing the end of the steel pipe to undergo full plastic deformation under high temperature and high pressure, further reducing the risk of springback. In addition, heating reduces the rigidity of the steel pipe, preventing cracking during flattening.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An apparatus for flattening the end of a seamless steel tube, characterized by: The device includes an upper pressure plate (1) and a bearing plate (2) located below the upper pressure plate (1). The upper pressure plate (1) and the bearing plate (2) are respectively provided with a storage groove (3). The outer walls of the upper pressure plate (1) and the bearing plate (2) located on one side of the storage groove (3) are respectively fixedly installed with mounting plates (4). Multiple sets of heating tubes (5) are fixedly installed on the inner wall of each mounting plate (4). Each set of heating tubes (5) is located inside the corresponding storage groove (3). A temperature sensor (6) is installed on the outer wall of each mounting plate (4). A vertical moving mechanism is provided above the upper pressure plate (1), and a steel pipe positioning mechanism is provided on one side of the bearing plate (2).

2. An apparatus for flattening the end of a seamless steel tube according to claim 1, wherein The steel pipe positioning mechanism includes a rotating plate (11), and two sets of L-shaped blocks (12) are fixedly installed on the upper end of the rotating plate (11). Electric push rods (13) are fixedly installed on the upper ends of the two sets of L-shaped blocks (12), and the telescopic end of each electric push rod (13) slides through the L-shaped block (12).

3. An apparatus for flattening the end of a seamless steel tube according to claim 2, wherein Each set of electric push rods (13) has a limiting plate (14) fixedly installed at its telescopic end. The lower side of the limiting plate (14) has a limiting groove (17) which is in the shape of an inverted V.

4. A seamless tube end flattening apparatus according to claim 3, wherein The lower end of the pressure plate (2) is fixedly installed with a base plate (7), and the upper end of the base plate (7) is fixedly installed with a stop plate (15). An arc-shaped movable groove (16) is provided on one side of the stop plate (15).

5. An apparatus for flattening the end of a seamless steel tube according to claim 4, wherein The vertical moving mechanism includes an L-shaped frame (8) fixedly installed on the upper end of the base plate (7). A hydraulic rod (9) is fixedly installed on the upper end of the L-shaped frame (8). The telescopic end of the hydraulic rod (9) slides through the L-shaped frame (8). The telescopic end of the hydraulic rod (9) is fixedly installed with the upper pressure plate (1).

6. A seamless tube end flattening apparatus according to claim 5 wherein, A stepper motor (10) is installed at the lower end of the base plate (7), and the output shaft of the stepper motor (10) is fixedly installed with the rotating plate (11).

7. The apparatus according to claim 1, wherein The upper pressure plate (1) and the lower pressure plate are made of tungsten metal.

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