Punching deformation compensation type steel pipe rolling machine
By designing a piercing deformation compensation steel pipe rolling mill, the problem of uneven deformation during the steel pipe rolling process is solved by using the rotational clamping of a tapered rod and an arc-shaped plate, thus achieving a smooth surface and improved dimensional accuracy of the steel pipe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG PLECO MASCH CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-15
AI Technical Summary
During the piercing and rolling process of steel pipes, there are problems such as uneven deformation, uneven wall thickness, and ellipticity deviation, and existing technologies are difficult to effectively compensate for deformation.
A piercing deformation compensation steel pipe rolling mill is adopted, which performs piercing operation through a tapered rod, and uses the rotation clamping and adjustment of the arc-shaped plate, combined with the cylinder control and motor-driven gear rotation, to achieve deformation compensation of the steel pipe surface.
It effectively reduces deformation during steel pipe rolling, improves product dimensional accuracy and internal quality, and ensures a smooth steel pipe surface.
Smart Images
Figure CN224237882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rolling mills, and in particular to a piercing deformation compensation type steel pipe rolling mill. Background Technology
[0002] In seamless steel pipe production, the piercing process is used to pierce a solid billet into a hollow tube. The entire production process generally includes piercing, rolling, and sizing / reducing processes. As the first step in metal deformation, piercing produces a tube with relatively thick walls, short length, and poor inner and outer surface quality; hence, it is called a "blank tube."
[0003] In the steel pipe rolling process, piercing deformation compensation is a key technical link to ensure the dimensional accuracy and internal quality of the product, especially in the production of hot-rolled seamless steel pipes. During the processing, the material will undergo complex deformation, including axial extension, circumferential expansion and radial compression. Uneven deformation may occur during the deformation process, resulting in problems such as uneven wall thickness and ellipticity deviation. Therefore, compensation measures are required. Utility Model Content
[0004] In view of this, the present invention provides a piercing deformation compensation type steel pipe rolling mill, the main technical problem to be solved is: to compensate for the deformation of the steel pipe during piercing rolling, so as to reduce the deformation of the steel pipe during rolling.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a piercing deformation compensation type steel pipe rolling mill, comprising a base plate, a fixing plate fixedly connected to the upper surface of the base plate, a toothed ring movably connected to the surface of the fixing plate, a fixing block fixedly connected to the inner surface of the toothed ring, three fixing blocks, a movable plate installed inside the fixing block, an arc-shaped piece fixedly connected to the end of the movable plate away from the fixing block, a column fixedly connected to the upper surface of the base plate, the column being located to the left of the fixing plate, a connecting rod fixedly connected to the surface of the column, and a tapered rod fixedly connected to the end of the connecting rod away from the column.
[0006] By adopting the above technical solution, a conical rod can be used to pierce a solid steel pipe. After piercing, the steel pipe will be positioned between multiple arc-shaped pieces. Adjusting the position of the moving plate inside the fixed block can change the position of the arc-shaped pieces, allowing them to fit against the surface of the steel pipe and clamp it. Then, the gear ring rotates, and the multiple arc-shaped pieces will rotate and clamp the pierced steel pipe, which can smooth out the deformation on the surface of the steel pipe caused by piercing and compensate for the deformation.
[0007] As a further description of the above technical solution:
[0008] A side plate is fixedly connected to the right side end of the base plate, and a cylinder is fixedly connected to the surface of the side plate. A push block is fixedly connected to the end of the cylinder away from the side plate.
[0009] By adopting the above technical solution, the movement of the push block can be controlled by the cylinder on the side plate. When in use, the steel pipe to be processed is placed in the push block, and the movement of the push block is controlled by the operation of the cylinder, thereby controlling the movement of the steel pipe to be processed towards the tapered rod.
[0010] As a further description of the above technical solution:
[0011] A limiting ring is fixedly connected to the surface of the fixing plate, and a limiting groove is formed on the side of the gear ring, with the limiting ring located inside the limiting groove.
[0012] By adopting the above technical solution, the gear ring can rotate on the fixed plate, which facilitates the rotational clamping of the steel pipe by the arc-shaped plate.
[0013] As a further description of the above technical solution:
[0014] The surface of the fixed block has a first through hole, and the surface of the movable plate has a second through hole, with the positions of the first through hole and the second through hole corresponding to each other.
[0015] By adopting the above technical solution, it is easy to adjust the distance between the fixed block and the moving plate, thereby changing the position of the arc-shaped piece.
[0016] As a further description of the above technical solution:
[0017] A screw is installed inside the first through hole, and the screw is located inside the second through hole.
[0018] By adopting the above technical solution, the position of the fixing block and the moving plate can be fixed by screws, which makes it easy to adjust the position of the arc-shaped piece.
[0019] As a further description of the above technical solution:
[0020] A motor is fixedly connected to the upper surface of the base plate, a rotating shaft is fixedly connected to the output end of the motor, and a gear is fixedly connected to the end of the rotating shaft away from the motor.
[0021] By adopting the above technical solution, the motor can drive the shaft to rotate, which in turn drives the gear to rotate.
[0022] As a further description of the above technical solution:
[0023] The gear is located below the gear ring, and the side of the gear meshes with the side of the gear ring.
[0024] By adopting the above technical solution, when the gear rotates, it can drive the gear ring to rotate, which in turn drives the arc-shaped piece to rotate, so that multiple arc-shaped pieces can rotate and clamp the surface of the steel pipe, making it easier to smooth out the deformed area on the surface of the steel pipe.
[0025] By employing the above technical solution, the piercing deformation compensation type steel pipe rolling mill of this utility model has at least the following beneficial effects:
[0026] 1. Compared with the existing technology, this piercing deformation compensation steel pipe rolling mill can pierce solid steel pipes through a tapered rod. After piercing, the steel pipe reaches between multiple arc-shaped plates. Adjusting the position of the moving plate inside the fixed block can change the position of the arc-shaped plates, so that the arc-shaped plates can fit against the surface of the steel pipe and clamp the steel pipe. Then, the gear ring rotates, and at this time, the multiple arc-shaped plates will rotate and clamp the pierced steel pipe, which can flatten the deformation of the steel pipe surface caused by piercing and compensate for the deformation.
[0027] 2. Compared with the existing technology, this piercing deformation compensation steel pipe rolling mill can control the movement of the push block through the cylinder on the side plate. When in use, the steel pipe to be processed is placed in the push block, and the cylinder controls the movement of the push block, thereby controlling the steel pipe to be processed to move towards the tapered rod. Attached Figure Description
[0028] Figure 1 This is a first-view overall structural diagram of a perforation deformation compensation type steel pipe rolling mill proposed in this utility model;
[0029] Figure 2 This is a second-view overall structural diagram of a perforation deformation compensation type steel pipe rolling mill proposed in this utility model;
[0030] Figure 3 This is a cross-sectional view of the internal structure of a perforation deformation compensation type steel pipe rolling mill proposed in this utility model;
[0031] Figure 4 This utility model proposes a piercing deformation compensation type steel pipe rolling mill. Figure 3 Enlarged view of the structure at point A in the middle.
[0032] Legend:
[0033] 1. Base plate; 2. Fixing plate; 3. Gear ring; 4. Limiting ring; 5. Limiting groove; 6. Fixing block; 7. Moving plate; 8. First through hole; 9. Second through hole; 10. Screw; 11. Arc-shaped piece; 12. Motor; 13. Rotating shaft; 14. Gear; 15. Column; 16. Connecting rod; 17. Tapered rod; 18. Side plate; 19. Cylinder; 20. Push block. Detailed Implementation
[0034] Reference Figure 1-4 This utility model provides a perforation deformation compensation type steel pipe rolling mill: It includes a base plate 1, a fixed plate 2 fixedly connected to the upper surface of the base plate 1, a gear ring 3 movably connected to the surface of the fixed plate 2, and three fixed blocks 6 fixedly connected to the inner surface of the gear ring 3. A movable plate 7 is installed inside each fixed block 6, and an arc-shaped piece 11 is fixedly connected to the end of the movable plate 7 away from the fixed block 6. When the gear ring 3 rotates, it drives the arc-shaped piece 11 to rotate. A column 15 is fixedly connected to the upper surface of the base plate 1, located to the left of the fixed plate 2. A connecting rod 16 is fixedly connected to the surface of the column 15, and a tapered rod 17 is fixedly connected to the end of the connecting rod 16 away from the column 15. A side plate 18 is fixedly connected to the right side of the base plate 1, and a cylinder 19 is fixedly connected to the surface of the side plate 18. The cylinder 19 is fixedly connected to the end of the side plate 18 away from the side plate 18. A push block 20 is fixedly connected. The movement of the push block 20 can be controlled by the cylinder 19 on the side plate 18. When in use, the steel pipe to be processed is placed in the push block 20. The cylinder 19 controls the movement of the push block 20, thereby controlling the steel pipe to be processed to move towards the tapered rod 17. With the help of the tapered rod 17, the steel pipe can be pierced. When in use, the solid steel pipe can be pierced by the tapered rod 17. The pierced part of the steel pipe will reach between multiple arc-shaped pieces 11. Adjusting the position of the moving plate 7 inside the fixed block 6 can change the position of the arc-shaped pieces 11, so that the arc-shaped pieces 11 can fit against the surface of the steel pipe and clamp the steel pipe. Then the gear ring 3 rotates. At this time, the multiple arc-shaped pieces 11 will rotate and clamp the pierced steel pipe, which can flatten the deformation of the steel pipe surface caused by piercing and compensate for the deformation.
[0035] A limiting ring 4 is fixedly connected to the surface of the fixed plate 2, and a limiting groove 5 is opened on the side of the toothed ring 3. The limiting ring 4 is located inside the limiting groove 5, so that the toothed ring 3 can rotate on the fixed plate 2, which facilitates the rotation clamping of the steel pipe by the arc-shaped plate 11.
[0036] The surface of the fixed block 6 is provided with a first through hole 8, and the surface of the movable plate 7 is provided with a second through hole 9. The positions of the first through hole 8 and the second through hole 9 are corresponding to each other, so as to facilitate the adjustment of the distance between the fixed block 6 and the movable plate 7, thereby changing the position of the arc-shaped piece 11. A screw 10 is installed inside the first through hole 8, and the screw 10 is located inside the second through hole 9. The positions of the fixed block 6 and the movable plate 7 can be fixed by the screw 10.
[0037] A motor 12 is fixedly connected to the upper surface of the base plate 1. A rotating shaft 13 is fixedly connected to the output end of the motor 12. A gear 14 is fixedly connected to the end of the rotating shaft 13 away from the motor 12. The operation of the motor 12 can drive the rotating shaft 13 to rotate, which in turn drives the gear 14 to rotate. The gear 14 is located below the gear ring 3. The side of the gear 14 meshes with the side of the gear ring 3. When the gear 14 rotates, it can drive the gear ring 3 to rotate, which in turn drives the arc-shaped pieces 11 to rotate, so that multiple arc-shaped pieces 11 can rotate and clamp the surface of the steel pipe, which is convenient for smoothing the deformed area on the surface of the steel pipe.
[0038] Working principle: During use, the tapered rod 17 can be used to pierce the solid steel pipe. After piercing, the steel pipe will be between multiple arc-shaped pieces 11. Adjusting the position of the moving plate 7 inside the fixed block 6 can change the position of the arc-shaped pieces 11, so that the arc-shaped pieces 11 can fit against the surface of the steel pipe and clamp the steel pipe. Then the gear ring 3 rotates, and at this time, the multiple arc-shaped pieces 11 will rotate and clamp the pierced steel pipe, which can flatten the deformation of the steel pipe surface caused by piercing and compensate for the deformation.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A piercing deformation compensation type steel pipe rolling mill, comprising a base plate (1), characterized in that: A fixing plate (2) is fixedly connected to the upper surface of the base plate (1). A toothed ring (3) is movably connected to the surface of the fixing plate (2). A fixing block (6) is fixedly connected to the inner surface of the toothed ring (3). There are three fixing blocks (6). A movable plate (7) is installed inside the fixing block (6). An arc-shaped piece (11) is fixedly connected to the end of the movable plate (7) away from the fixing block (6). A column (15) is fixedly connected to the upper surface of the base plate (1). The column (15) is located on the left side of the fixing plate (2). A connecting rod (16) is fixedly connected to the surface of the column (15). A tapered rod (17) is fixedly connected to the end of the connecting rod (16) away from the column (15).
2. The piercing deformation compensation type steel pipe rolling mill according to claim 1, characterized in that: A side plate (18) is fixedly connected to the right side end of the base plate (1), and a cylinder (19) is fixedly connected to the surface of the side plate (18). A push block (20) is fixedly connected to the end of the cylinder (19) away from the side plate (18).
3. The piercing deformation compensation type steel pipe rolling mill according to claim 1, characterized in that: A limiting ring (4) is fixedly connected to the surface of the fixing plate (2), and a limiting groove (5) is opened on the side of the toothed ring (3), with the limiting ring (4) located inside the limiting groove (5).
4. A piercing deformation compensation type steel pipe rolling mill according to claim 1, characterized in that: The surface of the fixed block (6) is provided with a first through hole (8), and the surface of the movable plate (7) is provided with a second through hole (9). The position of the first through hole (8) corresponds to the position of the second through hole (9).
5. A piercing deformation compensation type steel pipe rolling mill according to claim 4, characterized in that: A screw (10) is installed inside the first through hole (8), and the screw (10) is located inside the second through hole (9).
6. A piercing deformation compensation type steel pipe rolling mill according to claim 1, characterized in that: A motor (12) is fixedly connected to the upper surface of the base plate (1), and a rotating shaft (13) is fixedly connected to the output end of the motor (12). A gear (14) is fixedly connected to the end of the rotating shaft (13) away from the motor (12).
7. A piercing deformation compensation type steel pipe rolling mill according to claim 6, characterized in that: The gear (14) is located below the gear ring (3), and the side of the gear (14) meshes with the side of the gear ring (3).