A three-roll sizing machine for reducing the ovality of steel pipes

Abstract

This utility model discloses a three-roll sizing machine for reducing the ellipticity of steel pipes, relating to the technical field of three-roll sizing machines. The machine includes a connecting shell and a three-roll sizing machine frame, and further includes: a guide assembly disposed on one side of the connecting shell, the guide assembly including a clamping block and a lead screw, with a connecting plate fixedly connected to one side of the clamping block; a conveying assembly disposed on one side of the connecting shell, the conveying assembly including a conveying shaft and a motor, with a connecting rod fixedly connected to one side of the conveying shaft; and a shock-absorbing assembly disposed on one side of the three-roll sizing machine frame, the shock-absorbing assembly including a damping hydraulic rod and a moving arm, with a base fixedly connected to one side of the damping hydraulic rod. This utility model, a three-roll sizing machine for reducing the ellipticity of steel pipes, achieves buffering and shock absorption through the installation of the shock-absorbing assembly, avoiding vibration marks, scratches, or periodic defects on the surface of the steel pipe caused by roller vibration, thus improving the surface quality of the steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of three-roll sizing machine technology, specifically a three-roll sizing machine for reducing the ovality of steel pipes. Background Technology

[0002] In the steel pipe production process, sizing accuracy is one of the key factors in ensuring product quality, especially the ellipticity of the steel pipe. At the beginning of the sizing process, uneven stress on the pipe as it passes through the sizing machine can easily cause shape deviations, particularly elliptical deformation. Traditional sizing machines often experience roller misalignment and unstable pipe shape during the initial sizing stage due to inaccurate roller positioning or vibration, leading to significant ellipticity deviations.

[0003] However, existing three-roll sizing machines are prone to causing vibration marks, scratches, and periodic defects on the surface of steel pipes due to roller vibration, which reduces the quality of the steel pipe surface. Utility Model Content

[0004] This invention provides a three-roll sizing machine for reducing the ellipticity of steel pipes, which solves the problem that existing three-roll sizing machines for reducing the ellipticity of steel pipes are prone to causing vibration marks, scratches and periodic defects on the surface of the steel pipe due to roller vibration during use, thus reducing the quality of the steel pipe surface.

[0005] To facilitate the reduction of roller vibration, this utility model provides the following technical solution: a three-roll sizing mill for reducing the ovality of steel pipes, comprising a connecting shell and a three-roll sizing mill frame, and further comprising: A guide assembly is provided on one side of the connecting shell. The guide assembly includes a clamping block and a lead screw. A connecting plate is fixedly connected to one side of the clamping block. A conveying assembly is disposed on one side of the connecting shell. The conveying assembly includes a conveying shaft and a motor. A connecting rod is fixedly connected to one side of the conveying shaft. A shock-absorbing assembly is installed on one side of the frame of the three-roll sizing mill. The shock-absorbing assembly includes a damping hydraulic rod and a moving arm. A base is fixedly connected to one side of the damping hydraulic rod.

[0006] As a preferred embodiment of the present invention, the guide assembly includes a lead screw fixedly connected to one side of the connecting plate, and a nut is threadedly connected to one side of the lead screw.

[0007] As a preferred embodiment of the present invention, the conveying assembly includes a motor fixedly connected to one side of a connecting rod, and a connecting frame fixedly connected to one side of the motor.

[0008] As a preferred technical solution of this utility model, the shock absorption component includes a movable block slidably connected to one side of the base, a connecting rod two fixedly connected to one side of the movable block, a movable arm slidably connected to one side of the connecting rod two, and a connecting rod three fixedly connected to one side of the movable arm.

[0009] As a preferred embodiment of this utility model, a block is fixedly connected to one side of the connecting rod three, a bottom shell is fixedly connected to one side of the block, a square plate is slidably connected to one side of the bottom shell, and a roller is fixedly connected to one side of the square plate.

[0010] As a preferred embodiment of this utility model, a spring is fixedly connected to one side of the connecting plate one, a connecting plate two is slidably connected to one side of the lead screw, and a hydraulic rod one is fixedly connected to one side of the connecting plate two.

[0011] As a preferred embodiment of this utility model, an input port is fixedly connected to one side of the frame of the three-roll sizing machine, and a water pipe is fixedly connected to one side of the input port.

[0012] As a preferred embodiment of this utility model, a fixed frame is fixedly connected to the top of the three-roll sizing machine frame, and a drive shaft is fixedly connected to one side of the three-roll sizing machine frame.

[0013] Compared with the prior art, this utility model provides a three-roll sizing machine for reducing the ovality of steel pipes, which has the following beneficial effects: This three-roll sizing machine for reducing the ellipticity of steel pipes, through the setting of a shock-absorbing component, causes the square plate to squeeze inward when the roller vibrates left and right during use. This causes the square block to squeeze the moving arm. As the moving arm moves, it drives the connecting rod to push the moving block. As the moving block moves, it squeezes the damping hydraulic rod, thereby achieving a buffering and shock-absorbing effect. This avoids the appearance of vibration marks, scratches, or periodic defects on the surface of the steel pipe caused by roller vibration, thus improving the surface quality of the steel pipe.

[0014] This three-roll sizing machine for reducing the ovality of steel pipes, through the setting of guide components and conveying components, corrects the steel pipe by placing it in the middle of the clamping blocks during use, preventing the steel pipe from tilting and damaging the rollers. By starting the motor, the motor drives the connecting rod to rotate, which in turn drives the conveying shaft to rotate, thereby conveying the steel pipe to the rollers for diameter reduction. This avoids shape deformation caused by the steel pipe deviating from the center line, improving the precision and quality of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the shock absorption component structure of this utility model; Figure 4 This is a schematic diagram of the guiding component and conveying component of this utility model.

[0016] In the diagram: 1. Connecting shell; 2. Three-roll sizing machine frame; 3. Guide assembly; 301. Clamping block; 302. Lead screw; 4. Connecting plate one; 5. Conveying assembly; 501. Conveying shaft; 502. Motor; 6. Connecting rod one; 7. Shock absorption assembly; 701. Damping hydraulic rod; 702. Moving arm; 8. Base; 9. Nut; 10. Connecting frame; 11. Moving block; 12. Connecting rod two; 13. Connecting rod three; 14. Block; 15. Bottom shell; 16. Square plate; 17. Roller shaft; 18. Spring; 19. Connecting plate two; 20. Hydraulic rod one; 21. Input port; 22. Water pipe; 23. Fixing frame; 24. Drive shaft. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model discloses a three-roll sizing machine for reducing the ovality of steel pipes, including a connecting shell 1 and a three-roll sizing machine frame 2, and further including: a guide assembly 3 disposed on one side of the connecting shell 1, the guide assembly 3 including a clamping block 301 and a lead screw 302, and a connecting plate 4 fixedly connected to one side of the clamping block 301; a conveying assembly 5 disposed on one side of the connecting shell 1, the conveying assembly 5 including a conveying shaft 501 and a motor 502, and a connecting rod 6 fixedly connected to one side of the conveying shaft 501; and a shock-absorbing assembly 7 disposed on one side of the three-roll sizing machine frame 2, the shock-absorbing assembly 7 including a damping hydraulic rod 701 and a moving arm 702, and a base 8 fixedly connected to one side of the damping hydraulic rod 701.

[0019] Specifically, the guide assembly 3 includes a lead screw 302 fixedly connected to one side of the connecting plate 4, and a nut 9 is threadedly connected to one side of the lead screw 302.

[0020] In this embodiment, by fixing the nut 9 to the lead screw 302, the spring 18 on the connecting plate 1 4 and the connecting plate 2 19 are connected, thus preventing the clamping block 301 from being damaged due to excessive vibration.

[0021] Specifically, the conveying assembly 5 includes a motor 502 fixedly connected to one side of the connecting rod 6, and a connecting frame 10 fixedly connected to one side of the motor 502.

[0022] In this embodiment, by starting the motor 502, the motor 502 drives the connecting rod 6 to rotate, and the rotation of the connecting rod 6 drives the conveying shaft 501 to rotate, which facilitates the conveying of the steel pipe.

[0023] Specifically, the shock absorption assembly 7 includes a movable block 11 slidably connected to one side of the base 8, a connecting rod 12 fixedly connected to one side of the movable block 11, a movable arm 702 slidably connected to one side of the connecting rod 12, and a connecting rod 13 fixedly connected to one side of the movable arm 702.

[0024] In this embodiment, the moving arm 702 pushes the connecting rod 12 and the moving block 11 to move, so that the moving block 11 squeezes the damping hydraulic rod 701, thereby achieving the function of buffering and shock absorption of the roller shaft 17.

[0025] Specifically, a block 14 is fixedly connected to one side of the connecting rod 13, a bottom shell 15 is fixedly connected to one side of the block 14, a square plate 16 is slidably connected to one side of the bottom shell 15, and a roller 17 is fixedly connected to one side of the square plate 16.

[0026] In this embodiment, the sliding of the square plate 16 causes the block 14 to move the connecting rod 13, and the movement of the connecting rod 13 causes the moving arm 702 to move.

[0027] Specifically, a spring 18 is fixedly connected to one side of the connecting plate 4, a connecting plate 19 is slidably connected to one side of the lead screw 302, and a hydraulic rod 20 is fixedly connected to one side of the connecting plate 19.

[0028] In this embodiment, the hydraulic rod 20 pushes the clamping block 301, which facilitates the adjustment of the distance between the clamping blocks 301.

[0029] Specifically, an inlet 21 is fixedly connected to one side of the frame 2 of the three-roll sizing mill, and a water pipe 22 is fixedly connected to one side of the inlet 21.

[0030] In this embodiment, the inlet 21 and the water pipe 22 facilitate the delivery of coolant to the surface of the roller 17, thus preventing the steel pipe from becoming less smooth due to excessive temperature.

[0031] Specifically, a fixed frame 23 is fixedly connected to the top of the three-roll sizing mill frame 2, and a drive shaft 24 is fixedly connected to one side of the three-roll sizing mill frame 2.

[0032] In this embodiment, the fixing frame 23 facilitates the installation and fixing of the three-roll sizing machine frame 2, and the drive shaft 24 facilitates the rotation of the roller shaft 17.

[0033] The working principle and usage process of this utility model are as follows: During use, when the roller shaft 17 vibrates left and right, the square plate 16 is pressed inward, causing the square block 14 to press the moving arm 702. The moving arm 702 moves, causing the moving arm 702 to drive the connecting rod 12 to push the moving block 11. The moving block 11 moves, causing the moving block 11 to press the damping hydraulic rod 701, thereby achieving the function of buffering and shock absorption. During use, by placing the steel pipe in the middle of the clamping block 301, the steel pipe is straightened to prevent the steel pipe from tilting and causing damage to the roller shaft 17. By starting the motor 502, the motor 502 drives the connecting rod 6 to rotate. The rotation of the connecting rod 6 drives the conveying shaft 501 to rotate, thereby achieving the function of conveying the steel pipe to the roller shaft 17 for diameter reduction.

[0034] In summary, this three-roll sizing machine for reducing the ellipticity of steel pipes achieves buffering and shock absorption through the installation of the shock-absorbing component 7, avoiding vibration marks, scratches, or periodic defects on the surface of the steel pipe caused by the vibration of the roller 17, thus improving the surface quality of the steel pipe. Through the installation of the guide component 3 and the conveying component 5, the steel pipe is conveyed to the roller 17 for diameter reduction, avoiding shape deformation caused by the steel pipe deviating from the centerline, avoiding errors caused by human conveying, and improving the accuracy and quality of the product.

[0035] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-roll sizing mill for reducing the ovality of steel pipes, comprising a connecting shell (1) and a three-roll sizing mill frame (2), characterized in that, Also includes: A guide assembly (3) is provided on one side of the connecting shell (1). The guide assembly (3) includes a clamping block (301) and a lead screw (302). A connecting plate (4) is fixedly connected to one side of the clamping block (301). A conveying assembly (5) is provided on one side of the connecting shell (1). The conveying assembly (5) includes a conveying shaft (501) and a motor (502). A connecting rod (6) is fixedly connected to one side of the conveying shaft (501). A shock-absorbing assembly (7) is set on one side of the frame (2) of the three-roll sizing mill. The shock-absorbing assembly (7) includes a damping hydraulic rod (701) and a moving arm (702). A base (8) is fixedly connected to one side of the damping hydraulic rod (701).

2. The three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: The guide assembly (3) includes a lead screw (302) fixedly connected to one side of the connecting plate (4), and a nut (9) is threadedly connected to one side of the lead screw (302).

3. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: The conveying assembly (5) includes a motor (502) fixedly connected to one side of the connecting rod (6), and a connecting frame (10) is fixedly connected to one side of the motor (502).

4. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: The shock absorption assembly (7) includes a movable block (11) slidably connected to one side of the base (8), a connecting rod two (12) fixedly connected to one side of the movable block (11), a movable arm (702) slidably connected to one side of the connecting rod two (12), and a connecting rod three (13) fixedly connected to one side of the movable arm (702).

5. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 4, characterized in that: A block (14) is fixedly connected to one side of the connecting rod (13), a bottom shell (15) is fixedly connected to one side of the block (14), a square plate (16) is slidably connected to one side of the bottom shell (15), and a roller (17) is fixedly connected to one side of the square plate (16).

6. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: A spring (18) is fixedly connected to one side of the connecting plate 1 (4), a connecting plate 2 (19) is slidably connected to one side of the lead screw (302), and a hydraulic rod 1 (20) is fixedly connected to one side of the connecting plate 2 (19).

7. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: An inlet (21) is fixedly connected to one side of the frame (2) of the three-roll sizing machine, and a water pipe (22) is fixedly connected to one side of the inlet (21).

8. A three-roll sizing mill for reducing the ovality of steel pipes according to claim 1, characterized in that: A fixed frame (23) is fixedly connected to the top of the three-roll sizing mill frame (2), and a drive shaft (24) is fixedly connected to one side of the three-roll sizing mill frame (2).

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