A straightening and finishing device for producing high-strength corrosion-resistant cold-rolled seamless steel pipes

Abstract

The application discloses a straightening and finishing device for high-strength corrosion-resistant cold-rolled seamless steel pipe production and relates to the technical field of steel pipe straightening, which comprises a bottom plate, first and second fixed plates vertically arranged and fixedly connected with the bottom plate, a mounting seat fixedly arranged on the inner side surface of the first fixed plate, a mounting plate provided with a first through hole corresponding to the mounting seat and penetrating through the front and back surfaces, a straightening assembly arranged on the mounting plate and capable of rotating with the first through hole as the center, one end of a steel pipe to be straightened capable of being fixed in the mounting seat and the other end capable of extending out of the first through hole, and the straightening assembly capable of generating a load towards the steel pipe to be straightened; and a driving mechanism, the mounting plate being slidably connected with the bottom plate, the driving mechanism being arranged on the bottom plate and capable of driving the mounting plate to slide towards the first fixed plate. The application can rotate and round the curved part with small curvature for straightening and straighten the steel pipe from the inside, and can effectively improve the straightening and finishing effect of the steel pipe.

Description

Technical Field

[0001] This invention relates to the field of steel pipe straightening technology, and in particular to a straightening and finishing device for the production of high-strength corrosion-resistant cold-rolled seamless steel pipes. Background Technology

[0002] Cold-rolled seamless steel pipes are steel pipe structures made by piercing steel ingots or solid tube blanks to form a rough tube, and then hot-rolling, cold-rolling or cold-drawing. Because radial and axial pressures are generated during the manufacturing process, the steel pipe will bend and deform after forming, and straightening treatment is required.

[0003] Patent application CN116393550A discloses a straightening and finishing device for cold-rolled seamless steel pipe production. By setting an adaptive size straightening component, it can straighten cold-rolled seamless steel pipes of different diameters. The straightening component uses symmetrically arranged straightening rollers, which has the advantage of ensuring that the two ends of the straightened steel pipe are on the same axis. However, the straightening effect of the straightening rollers is generally limited, and concave areas or slightly curved sections inside the steel pipe cannot be precisely straightened, which is a common problem with traditional steel pipe straightening equipment.

[0004] Therefore, how to provide a device that has a good straightening effect and can straighten the inside of steel pipes or parts with small curvature is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a straightening and finishing device for the production of high-strength, corrosion-resistant cold-rolled seamless steel pipes, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a straightening and finishing device for the production of high-strength corrosion-resistant cold-rolled seamless steel pipes, used to straighten the steel pipes to be straightened after straightening by straightening rollers, comprising:

[0007] Base plate;

[0008] The fixing plate includes a first fixing plate and a second fixing plate, which are respectively located near the two ends of the base plate. The first fixing plate and the second fixing plate are vertically arranged and fixedly connected to the base plate.

[0009] Mounting base, the mounting base is fixedly disposed on the inner side of the first fixing plate;

[0010] The mounting plate is located between the first fixing plate and the second fixing plate. The mounting plate has a first through hole corresponding to the mounting seat through its front and rear surfaces. The mounting plate is provided with a straightening component that can rotate around the first through hole. One end of the steel pipe to be straightened can be fixed in the mounting seat, and the other end can extend out from the first through hole. The straightening component can generate a load toward the steel pipe to be straightened.

[0011] A driving mechanism is provided, wherein the mounting plate is slidably connected to the base plate, and the driving mechanism is disposed on the base plate and is capable of driving the mounting plate to slide towards the first fixed plate;

[0012] A positioning rod, one end of which is fixedly connected to the first fixing plate, and the other end of which passes through the mounting plate and is fixedly connected to the second fixing plate. The positioning rod is set in the same direction as the sliding direction of the mounting plate.

[0013] Furthermore, the mounting base includes:

[0014] The mounting cylinder is a cylindrical structure with an open top and a closed bottom, and the bottom of the mounting cylinder is fixedly connected to the inner side of the first fixing plate.

[0015] A support column is fixedly installed inside the mounting cylinder, and a tubular cavity is formed between the support column and the inner wall of the mounting cylinder, allowing one end of the steel pipe to be straightened to be inserted into the tubular cavity.

[0016] Furthermore, it also includes:

[0017] An adjustable connector, one end of which is tubular and the other end is cylindrical. One end of the adjustable connector is adapted to the shape of the tubular cavity and can be inserted into the tubular cavity. The connecting part can be inserted into one end of the steel pipe to be straightened.

[0018] Furthermore, the straightening component includes:

[0019] A first turntable is rotatably mounted on the mounting plate with the first through hole as its center. A first rotary motor for driving the first turntable to rotate is provided on the mounting plate. The output end of the first rotary motor is connected to the first turntable in a transmission manner. A second through hole concentric with the first through hole is opened at the center of the first turntable.

[0020] A telescopic motor, wherein multiple telescopic motors are fixedly arranged on the first turntable at uniform intervals along the circumference, and a straightening pressure block is provided on the output end of the telescopic motor, and the output end of the telescopic motor faces the second through hole.

[0021] Furthermore, the driving mechanism is a cylinder, which is located near the first fixing plate and fixedly mounted on the base plate, and the output end of the cylinder is fixedly connected to the mounting plate.

[0022] Furthermore, it also includes: an internal straightening assembly for steel pipes, which is disposed between the mounting plate and the second fixing plate. The internal straightening assembly for steel pipes is fixedly connected to the second fixing plate. The internal straightening assembly for steel pipes has a mandrel. When the driving mechanism drives the mounting plate to slide towards the first fixing plate, the mandrel enters the interior of the steel pipe to be straightened. The mandrel is adapted to the shape of the inner surface of the steel pipe.

[0023] Furthermore, the internal straightening assembly of the steel pipe includes:

[0024] The top plate is fixedly connected to the mounting plate via a connecting rod, and its bottom is slidably connected to the bottom plate; one end of the positioning rod is fixedly connected to the first fixing plate, and the other end passes through the mounting plate and the top plate in sequence and is fixedly connected to the second fixing plate; the core mold is fixedly disposed on the side of the top plate near the mounting plate, and the core mold corresponds to the first through hole.

[0025] Furthermore, it also includes:

[0026] The second turntable is rotatably mounted on the top plate, and its rotation center is coaxial with the first through hole. The top plate is provided with a second rotary motor for driving the second turntable to rotate. The output end of the second rotary motor is connected to the second turntable for transmission. The core mold is fixedly mounted on the second turntable.

[0027] Furthermore, the first fixing plate and the second fixing plate are fixedly connected to the base plate through a fixed support seat, the base plate is provided with a slide rail, and the mounting plate and the top plate are slidably connected to the slide rail through a sliding support seat.

[0028] The present invention discloses the following technical effects:

[0029] 1. After the steel pipe to be straightened is straightened by the straightening rollers, its two ends are located on the same axis. Based on this, this application provides an installation plate on the base plate that can move towards the first fixed plate. At the same time, a straightening component that can rotate and apply load to the steel pipe to be straightened is provided on the installation plate. This can realize the rotational rolling straightening of the steel pipe to be straightened. Even the curved parts with small curvature can be finely straightened, which can effectively improve the straightening and finishing effect of the steel pipe.

[0030] 2. The steel pipe to be straightened is connected and fixed to the mounting base on the first fixed plate through an adjustable connector. The size of the end of the adjustable connector connected to the mounting base is fixed, and the end connected to the steel pipe to be straightened can be selected with different connection parts according to the size of various steel pipes to be straightened. When the steel pipe to be straightened changes, only the adjustable connector needs to be replaced, and other structures do not need to be adjusted, which has a wide range of applications.

[0031] 3. The straightening assembly adopts a structure of multiple telescopic motors combined with straightening pressure blocks. The telescopic motors can adjust their output distance according to the steel pipes to be straightened of different sizes, so as to rotate and squeeze the steel pipes to be straightened from multiple directions with the most suitable straightening pressure. On the one hand, this further expands the applicability of the equipment, and on the other hand, it can provide the best straightening pressure.

[0032] 4. This application also includes an internal straightening assembly for steel pipes. The internal straightening assembly for steel pipes has a mandrel. When the drive mechanism drives the mounting plate to slide towards the first fixed plate, the mandrel can simultaneously enter the interior of the steel pipe to be straightened, and squeeze the area that is concave into the interior of the steel pipe outward, thereby achieving straightening and finishing of the steel pipe from the inside.

[0033] 5. In order to improve the straightening effect inside the steel pipe, the mandrel needs to be adapted to the inner surface shape of the steel pipe to be straightened, which makes it difficult for it to enter the steel pipe. This application uses a second turntable to insert the mandrel into the steel pipe to be straightened by rotation, which can effectively reduce the difficulty of its entry into the steel pipe. At the same time, the rotation of the mandrel can also improve the straightening effect inside the steel pipe. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the first fixed plate structure;

[0037] Figure 3 This is a schematic diagram of the mounting plate structure;

[0038] Figure 4 This is a schematic diagram of the second fixed plate structure;

[0039] Figure 5 This is a schematic diagram of the adjustable connector structure;

[0040] Figure 6 This is a schematic diagram of the steel pipe structure to be straightened;

[0041] Figure 7 This is a schematic diagram showing the fit between the adjustable connector and the steel pipe to be straightened.

[0042] Figure 8 This is a schematic diagram of the top slab structure;

[0043] Figure 9 This is a schematic diagram of the second turntable structure;

[0044] The components include: 1. Steel pipe to be straightened; 2. Base plate; 3. First fixing plate; 4. Second fixing plate; 5. Mounting plate; 501. First through hole; 6. Positioning rod; 7. Mounting cylinder; 8. Support column; 9. Adjustable connecting piece; 901. Connecting part; 10. First turntable; 11. Telescopic motor; 12. Straightening pressure block; 13. Cylinder; 14. Core mold; 15. Top plate; 16. Second turntable; 17. Fixed support seat; 18. Sliding support seat; 19. Connecting rod. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] Reference Figure 1 This invention provides a straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes, used to straighten the steel pipe 1 to be straightened after being straightened by straightening rollers. The device includes: a base plate 2; a fixing plate, comprising a first fixing plate 3 and a second fixing plate 4, the first fixing plate 3 and the second fixing plate 4 being circular plates with identical structures, respectively located near both ends of the base plate 2, the first fixing plate 3 and the second fixing plate 4 being vertically arranged and fixedly connected to the base plate 2; and a mounting base, fixedly disposed on the inner side of the first fixing plate 3. Figure 1(Right side); Mounting plate 5, located between the first fixing plate 3 and the second fixing plate 4, with a first through hole 501 corresponding to the mounting base on the front and rear surfaces of the mounting plate 5, and a straightening component that can rotate around the first through hole 501 on the mounting plate 5. One end of the steel pipe 1 to be straightened can be fixed in the mounting base, and the other end can extend out from the first through hole 501. The straightening component can generate a load toward the steel pipe 1 to be straightened; Drive mechanism, the mounting plate 5 is slidably connected to the base plate 2, and the drive mechanism is set on the base plate 2 and can drive the mounting plate 5 to slide toward the first fixing plate 3; Positioning rod 6, one end of the positioning rod 6 is fixedly connected to the first fixing plate 3, and the other end passes through the mounting plate 5 and is fixedly connected to the second fixing plate 4. The setting direction of the positioning rod 6 is the same as the sliding direction of the mounting plate 5.

[0049] like Figure 2 As shown, the mounting base includes: a mounting cylinder 7, which is a cylindrical structure with an open top and a closed bottom, and the bottom of the mounting cylinder 7 is fixedly connected to the inner side of the first fixing plate 3; and a support column 8, which is fixedly installed inside the mounting cylinder 7, and a tubular cavity is formed between the support column 8 and the inner wall of the mounting cylinder 7, so that one end of the steel pipe 1 to be straightened can be inserted into the tubular cavity.

[0050] like Figures 5-7 This embodiment also includes: an adjustable connector 9, one end of which is tubular and the other end is cylindrical connecting part 901. One end of the adjustable connector 9 is adapted to the shape of the tubular cavity and can be inserted into the tubular cavity. The connecting part 901 can be inserted into one end of the steel pipe 1 to be straightened.

[0051] like Figure 3 As shown, the straightening assembly includes: a first turntable 10, which is rotatably mounted on a mounting plate 5 with a first through hole 501 as its center. A first rotary motor for driving the first turntable 10 to rotate is mounted on the mounting plate 5. The output end of the first rotary motor is connected to the first turntable 10 in a transmission connection. A second through hole concentric with the first through hole 501 is opened at the center of the first turntable 10; and a telescopic motor 11, which is a plurality of telescopic motors and is fixedly mounted on the first turntable 10 at uniform intervals along the circumference. A straightening pressure block 12 is provided on the output end of the telescopic motor 11, and the output end of the telescopic motor 11 faces the second through hole.

[0052] like Figure 1 As shown, the first fixed plate 3 and the second fixed plate 4 are fixedly connected to the base plate 2 via a fixed support 17. A slide rail is provided on the base plate 2, and the mounting plate 5 and the top plate 15 are slidably connected to the slide rail via a sliding support 18. The driving mechanism is a cylinder 13, which is located near the first fixed plate 3 and fixedly mounted on the base plate 2. The output end of the cylinder 13 is fixedly connected to the sliding support 18 below the mounting plate 5.

[0053] like Figure 1and Figure 8 As shown, it also includes: a steel pipe internal straightening component, which is disposed between the mounting plate 5 and the second fixed plate 4. The steel pipe internal straightening component is fixedly connected to the second fixed plate 4. The steel pipe internal straightening component has a mandrel 14. When the driving mechanism drives the mounting plate 5 to slide towards the first fixed plate 3, the mandrel 14 enters the interior of the steel pipe 1 to be straightened. The mandrel 14 is adapted to the shape of the inner surface of the steel pipe.

[0054] The internal straightening assembly of the steel pipe includes: a top plate 15, which is fixedly connected to the mounting plate 5 via a connecting rod 19, and its bottom is slidably connected to the bottom plate 2; a positioning rod 6, one end of which is fixedly connected to the first fixing plate 3, and the other end of which passes through the mounting plate 5 and the top plate 15 in sequence and is fixedly connected to the second fixing plate 4. In this embodiment, a total of four positioning rods 6 are provided, which are located in the upper, lower, left and right directions of the top plate 15 respectively. The mounting plate 5 and the top plate 15 are respectively provided with sliding connection holes for the positioning rods 6 to pass through; and a core mold 14 is fixedly provided on the side of the top plate 15 near the mounting plate 5, and the core mold 14 corresponds to the first through hole 501.

[0055] Example 2

[0056] like Figure 9 As shown, the difference between this embodiment and embodiment 1 is that it also includes: a second turntable 16, which is rotatably mounted on the top plate 15, with its rotation center coaxial with the first through hole 501. A second rotary motor for driving the second turntable 16 to rotate is provided on the top plate 15, and the output end of the second rotary motor is connected to the second turntable 16 for transmission. The core mold 14 is fixedly mounted on the second turntable 16.

[0057] The working process is described in detail below with reference to Example 2:

[0058] 1. Select the appropriate model of adjustable connector 9 based on the model of the steel pipe 1 to be straightened, and connect and fix the adjustable connector 9 to the steel pipe 1 to be straightened as follows: Figure 9 As shown.

[0059] 2. Using cylinder 13, push the mounting plate 5 to the right to a position away from the first fixed plate 3, leaving sufficient installation space between the first fixed plate 3 and the mounting plate 5. Use a robotic arm to insert the adjustable connector 9 and the steel pipe 1 to be straightened into the mounting seat of the first fixed plate 3, so that the steel pipe 1 to be straightened remains horizontal.

[0060] 3. Start cylinder 13. Cylinder 13 drives mounting plate 5 to move towards first fixed plate 3 until multiple telescopic motors 11 correspond to the ends of the steel pipe 1 to be straightened. Start telescopic motors 11. Determine the output distance of telescopic motors 11 according to the model of the steel pipe 1 to be straightened, so that the straightening pressure block 12 on the output end of telescopic motor 11 is in close contact with the steel pipe 1 to be straightened. There is a gap between the mandrel 14 and the telescopic motor 11. At this time, the mandrel 14 is close to the steel pipe 1 to be straightened, but the mandrel 14 is not inserted into the steel pipe 1 to be straightened.

[0061] 4. Start the first rotary motor and simultaneously start the cylinder 13. The cylinder 13 drives the mounting plate 5 to move slowly and uniformly towards the first fixed plate 3. During this process, the first rotary motor drives the first turntable 10 to rotate. The straightening pressure block 12 rotates while squeezing the outer surface of the steel pipe 1 to be straightened, rotating and rolling the steel pipe 1 to be straightened from right to left. After the mounting plate 5 has moved a certain distance to the left, since the mounting plate 5 and the top plate 15 are fixed together by the connecting rod 19, the movement states of the mounting plate 5 and the top plate 15 are the same. At this time, start the second rotary motor. The mandrel 14 starts to rotate and is driven by the top plate 15 to move to the left and enter the steel pipe 1 to be straightened. The mandrel 14 squeezes the concave area inside the steel pipe 1 to be straightened outward and can finally shape the steel pipe 1 to be straightened, thus realizing the straightening function from the inside.

[0062] 5. When the mounting plate 5 moves to a position close to the mounting base, the first rotary motor is turned off, and the telescopic motor 11 is started simultaneously. This causes the telescopic motor 11 to drive the straightening pressure block 12 to move rapidly outward. The inner diameters of the first through hole 501 and the second through hole are much larger than the outer diameter of the mounting base. When the cylinder 13 continues to drive the mounting plate 5 to move to the left, the mounting base enters the first through hole 501 and the second through hole, and the mounting plate 5 can move to a position very close to the first fixed plate 3. (It should be noted that...) Figure 1 The size of the cylinder 13 is only for illustration purposes; the stroke of cylinder 13 is sufficient to support the complete fit between the mounting plate 5 and the first fixed plate 3. The depth of the mounting base is greater than the lateral distance between the telescopic motor 11 and the core mold 14. Therefore, when the mounting plate 5 approaches the first fixed plate 3, the core mold 14 can contact the adjustable connector 9. When the core mold 14 is about to contact the adjustable connector 9, the second rotary motor is turned off to prevent the rotation of the core mold 14 from damaging the connection part 901 of the adjustable connector 9. When the core mold 14 contacts the adjustable connector 9, the steel pipe straightening work is completed, the mounting plate 5 and the top plate 15 move to the right together, the core mold 14 retracts, and the robot arm removes the straightened steel pipe.

[0063] One hundred high-strength corrosion-resistant cold-rolled seamless steel pipes were straightened and finished using the straightening device disclosed in this embodiment. As a result, after all the steel pipes on the surface were straightened and finished, the concave parts and slightly curved parts inside the steel pipes were effectively straightened, and the overall straightness of the steel pipes met the industry standards.

[0064] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0065] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes, used to straighten the steel pipe (1) to be straightened after being straightened by straightening rollers, characterized in that, include: Base plate (2); The fixing plate includes a first fixing plate (3) and a second fixing plate (4). The first fixing plate (3) and the second fixing plate (4) are respectively close to the two ends of the base plate (2). The first fixing plate (3) and the second fixing plate (4) are vertically arranged and fixedly connected to the base plate (2). Mounting base, the mounting base is fixedly disposed on the inner side of the first fixing plate (3); Mounting plate (5), the mounting plate (5) is located between the first fixing plate (3) and the second fixing plate (4), the mounting plate (5) has a first through hole (501) corresponding to the mounting seat through the front and rear surfaces, the mounting plate (5) is provided with a straightening component that can rotate around the first through hole (501) as the center, one end of the steel pipe (1) to be straightened can be fixed in the mounting seat, and the other end can extend out from the first through hole (501), the straightening component can generate a load toward the steel pipe (1) to be straightened; The driving mechanism is slidably connected to the base plate (2), and is disposed on the base plate (2) and can drive the mounting plate (5) to slide towards the first fixed plate (3); Positioning rod (6), one end of which is fixedly connected to the first fixing plate (3), and the other end passes through the mounting plate (5) and is fixedly connected to the second fixing plate (4). The setting direction of the positioning rod (6) is the same as the sliding direction of the mounting plate (5). It also includes: a steel pipe internal straightening component, which is disposed between the mounting plate (5) and the second fixing plate (4). The steel pipe internal straightening component is fixedly connected to the second fixing plate (4). The steel pipe internal straightening component has a mandrel (14). When the driving mechanism drives the mounting plate (5) to slide towards the first fixing plate (3), the mandrel (14) enters the interior of the steel pipe (1) to be straightened. The mandrel (14) is adapted to the inner surface shape of the steel pipe. The internal straightening assembly of the steel pipe includes: The top plate (15) is fixedly connected to the mounting plate (5) via a connecting rod (19), and its bottom is slidably connected to the bottom plate (2); one end of the positioning rod (6) is fixedly connected to the first fixing plate (3), and the other end passes through the mounting plate (5) and the top plate (15) in sequence and is fixedly connected to the second fixing plate (4); the core mold (14) is fixedly set on the side of the top plate (15) near the mounting plate (5), and the core mold (14) corresponds to the first through hole (501).

2. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 1, characterized in that, The mounting base includes: Mounting cylinder (7), which is a cylindrical structure with an open top and a closed bottom, and the bottom of the mounting cylinder (7) is fixedly connected to the inner side of the first fixing plate (3); The support column (8) is fixedly installed inside the mounting cylinder (7). A tubular cavity is formed between the support column (8) and the inner wall of the mounting cylinder (7). One end of the steel pipe (1) to be straightened can be inserted into the tubular cavity.

3. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 2, characterized in that, Also includes: Adjustable connector (9), one end of the adjustable connector (9) is tubular and the other end is cylindrical connecting part (901). One end of the adjustable connector (9) is adapted to the shape of the tubular cavity and can be inserted into the tubular cavity. The connecting part (901) can be inserted into one end of the steel pipe (1) to be straightened.

4. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 1, characterized in that, The straightening component includes: The first turntable (10) is rotatably mounted on the mounting plate (5) with the first through hole (501) as its center. The mounting plate (5) is provided with a first rotary motor for driving the first turntable (10) to rotate. The output end of the first rotary motor is connected to the first turntable (10) in a transmission. The center of the first turntable (10) is provided with a second through hole concentric with the first through hole (501). Telescopic motor (11), there are multiple telescopic motors (11) and they are fixedly arranged on the first turntable (10) at uniform intervals along the circumference. A straightening pressure block (12) is provided on the output end of the telescopic motor (11) and the output end of the telescopic motor (11) faces the second through hole.

5. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 1, characterized in that, The driving mechanism is a cylinder (13), which is located near the first fixing plate (3) and fixedly mounted on the base plate (2). The output end of the cylinder (13) is fixedly connected to the mounting plate (5).

6. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 1, characterized in that, Also includes: The second turntable (16) is rotatably mounted on the top plate (15), and its rotation center is coaxial with the first through hole (501). The top plate (15) is provided with a second rotary motor for driving the second turntable (16) to rotate. The output end of the second rotary motor is connected to the second turntable (16) in a transmission connection. The core mold (14) is fixedly mounted on the second turntable (16).

7. The straightening and finishing device for producing high-strength, corrosion-resistant cold-rolled seamless steel pipes according to claim 1, characterized in that, The first fixing plate (3) and the second fixing plate (4) are fixedly connected to the base plate (2) through a fixed support (17). The base plate (2) is provided with a slide rail. The mounting plate (5) and the top plate (15) are slidably connected to the slide rail through a sliding support (18).

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