Reducing mill for round steel production
By using the hydraulic system of a reduction sizing mill to adjust the roll position prestress in round steel production, the problem of dimensional fluctuations caused by roll wear and other factors in traditional mills has been solved, achieving high-precision control and stable rolling of round steel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENGANG STEEL PLATES CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional rolling mills are susceptible to factors such as die wear, workpiece temperature fluctuations, material differences, and tension changes during the rolling process, which can cause diameter fluctuations along the length of the workpiece, resulting in product dimensions exceeding tolerance ranges, reducing the yield rate and increasing processing costs.
By dynamically adjusting the roll position using a hydraulic system to apply prestress, nonlinear deformation is eliminated and the stiffness coefficient is improved. High-precision control of round steel dimensions is achieved by using a sizing mill.
It significantly reduces nonlinear deformation, improves mill rigidity, ensures rolling process stability and product consistency, and enables real-time and precise control of round steel dimensions.
Smart Images
Figure CN224586608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of round steel production equipment, and more specifically, to a reducing sizing mill for round steel production. Background Technology
[0002] With increasingly stringent requirements for dimensional accuracy in the steel market, precision control in round steel production has become a prominent issue. Traditional rolling mills are susceptible to factors such as die wear, workpiece temperature fluctuations, material differences, and tension variations during the rolling process, leading to diameter fluctuations along the length of the workpiece and ultimately resulting in product dimensions exceeding tolerance limits. This defect not only reduces product yield but also increases machining costs and material waste for downstream enterprises, weakening their market competitiveness. Although domestic steel mills have introduced advanced processes and equipment to improve precision, existing rolling mills still face two major technical bottlenecks: firstly, the difficulty in effectively eliminating nonlinear elastic deformation caused by gaps between mill base components; and secondly, insufficient stiffness coefficients, resulting in excessive elastic deformation of the mill stand during rolling.
[0003] Therefore, there is an urgent need to develop a new type of sizing mill that can stably apply prestress, enhance rigidity, and precisely control dimensions to solve the above problems. Utility Model Content
[0004] To address the aforementioned technical problems, a reducing sizing mill for round steel production is provided. This invention utilizes a hydraulic system to dynamically adjust the roll position and apply prestress, eliminating nonlinear deformation and improving the stiffness coefficient, thereby achieving high-precision control of the round steel dimensions.
[0005] To achieve the above objectives, this utility model provides a sizing and reducing mill for round steel production, comprising a sizing and reducing frame, a worktable fixedly installed at the top of the sizing and reducing frame, two sizing components fixedly installed on one side of the top of the worktable, and a sizing component fixedly installed on the other side of the top of the worktable. Each of the two sizing components includes a first limiting plate and a sizing block. The top of the first limiting plate is fixedly connected to the bottom of the sizing block. A second limiting plate is fixedly installed at the top of the sizing block. A sizing groove is formed in the middle of the sizing block. Three sizing rollers are rotatably connected inside the sizing groove. The sizing component includes two length plates and a top plate. The tops of the two length plates are fixedly connected to both sides of the bottom of the top plate. A lifting cylinder is fixedly installed in the middle of the top plate. A connecting platform is fixedly installed at the movable end of the lifting cylinder. Several sizing components are fixedly installed at the bottom of the connecting platform. The lifting cylinder performs telescopic movements, pushing the connecting platform from the top to adjust the height of the sizing components.
[0006] Furthermore, each of the sizing components includes a sizing shell and two sizing plates. The bottom end of the sizing shell has a movable groove, and two movable blocks are slidably connected inside the movable groove. The bottom ends of the two movable blocks are respectively fixedly connected to the top ends of the two sizing plates. Miniature cylinders are fixedly installed on both sides of the inner wall of the movable groove. The movable ends of the two miniature cylinders are respectively fixedly connected to the opposite side of the two movable blocks. The top end of the sizing shell is fixedly connected to the connecting platform. The miniature cylinders perform telescopic movements, pushing the movable blocks from one side, causing the movable blocks to slide along the movable groove, adjusting the distance between the two sizing plates, and performing a sizing operation on the round steel.
[0007] Furthermore, the bottom ends of both length plates are fixedly connected to the worktable, and the sizing assembly is mounted on the worktable via the length plates.
[0008] Furthermore, six lifting grooves are respectively opened on both sides of the inner wall of the reducing groove, and lifting blocks are slidably connected inside each of the six lifting grooves. The opposite ends of each pair of lifting blocks are rotatably connected to the two ends of three reducing rollers. The three reducing rollers cooperate with each other to reduce the diameter of the round steel and apply prestress.
[0009] Furthermore, a reducing frame that is slidably connected to the lifting groove is fixedly installed between every two opposing lifting blocks. Three cylinder bases are fixedly installed on the reducing blocks, each located on one side of the reducing groove. A sliding cylinder is fixedly installed on one side of each of the three cylinder bases. The movable ends of the three sliding cylinders are fixedly connected to the opposite side of the three reducing frames. The sliding cylinders extend and retract, pushing the reducing frame from one side. The reducing frame pushes the lifting block to slide along the lifting groove, adjusting the position of the reducing roller relative to the reducing groove.
[0010] Furthermore, the bottom ends of both first limiting plates are fixedly connected to the worktable, and the diameter reduction assembly is installed on the worktable through the first limiting plates.
[0011] Furthermore, a pusher frame is fixedly installed on one side of the sizing and reducing machine frame, and a pusher cylinder is fixedly installed in the middle of the pusher frame. A pusher plate that is slidably connected to the worktable is fixedly installed on the movable end of the pusher cylinder. The pusher cylinder performs telescopic movement and pushes the pusher plate from one side, and the pusher plate conveys and pushes the round steel.
[0012] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: 1. The present invention provides a reducing and sizing mill for round steel production, which applies prestress to the mill stand through reducing rollers, effectively eliminating gaps between the stand components, significantly reducing nonlinear deformation caused by gaps during rolling, and improving dimensional stability.
[0013] 2. The present invention provides a reducing sizing mill for round steel production. The prestressing effect changes the stress state of the mill stand, greatly improves the mill stiffness coefficient, suppresses the elastic deformation of the mill stand during the rolling process, and ensures the stability of the rolling process and the consistency of the products.
[0014] 3. The present invention provides a sizing mill for round steel production, wherein the micro cylinder of the sizing component dynamically adjusts the distance between the two sizing plates, and the lifting cylinder adjusts the height of the sizing component, thereby achieving real-time and precise control of the round steel size and completely solving the problem of diameter fluctuation in the length direction. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a side view of a reducing sizing mill for round steel production according to the present invention; Figure 2 This is a cross-sectional view of a sizing assembly for a round steel production mill, as described in this utility model. Figure 3 This is a perspective view of a sizing assembly for a reducing sizing mill used in round steel production, as described in this utility model. Figure 4 This is a cross-sectional view of a sizing assembly for a reducing sizing mill used in round steel production, as described in this utility model.
[0017] In the diagram: 1. Sizing and reducing frame; 2. Workbench; 3. Sizing assembly; 31. Length plate; 32. Top plate; 33. Lifting cylinder; 34. Connecting platform; 35. Sizing component; 351. Sizing shell; 352. Sizing plate; 353. Movable block; 354. Miniature cylinder; 355. Movable groove; 4. Sizing assembly; 401. First limiting plate; 402. Sizing block; 403. Second limiting plate; 404. Sizing groove; 405. Lifting groove; 406. Sizing roller; 407. Lifting block; 408. Sizing frame; 409. Cylinder base; 410. Sliding cylinder; 5. Push plate; 6. Push cylinder; 7. Push frame. Detailed Implementation
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.
[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0022] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0023] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.
[0025] like Figures 1 to 4 As shown, this utility model provides a sizing and reducing mill for round steel production, including a sizing and reducing frame 1. A worktable 2 is fixedly installed at the top of the sizing and reducing frame 1. Two reducing components 4 are fixedly installed on one side of the top of the worktable 2, and a sizing component 3 is fixedly installed on the other side of the top of the worktable 2. Each reducing component 4 includes a first limiting plate 401 and a reducing block 402. The top of the first limiting plate 401 is fixedly connected to the bottom of the reducing block 402. A second limiting plate 403 is fixedly installed at the top of the reducing block 402, and a section is opened in the middle of the reducing block 402. There is a reducing groove 404, and three reducing rollers 406 are rotatably connected inside the reducing groove 404. The sizing assembly 3 includes two length plates 31 and a top plate 32. The top ends of the two length plates 31 are fixedly connected to the two sides of the bottom end of the top plate 32. A lifting cylinder 33 is fixedly installed in the middle of the top plate 32. A connecting platform 34 is fixedly installed at the movable end of the lifting cylinder 33. Several sizing components 35 are fixedly installed at the bottom end of the connecting platform 34. The lifting cylinder 33 performs telescopic movement and pushes the connecting platform 34 from the top to adjust the height of the sizing components 35.
[0026] Several sizing components 35 each include a sizing shell 351 and two sizing plates 352. The bottom end of the sizing shell 351 has a movable groove 355. Two movable blocks 353 are slidably connected inside the movable groove 355. The bottom ends of the two movable blocks 353 are fixedly connected to the top ends of the two sizing plates 352, respectively. Miniature cylinders 354 are fixedly installed on both sides of the inner wall of the movable groove 355. The movable ends of the two miniature cylinders 354 are fixedly connected to opposite sides of the two movable blocks 353, respectively. The top end of the sizing shell 351 is fixedly connected to a connecting platform 34. The miniature cylinders 354 extend and retract, pushing the movable blocks 353 from one side, causing them to slide along the movable groove 355, adjusting the distance between the two sizing plates 352, and performing a sizing operation on the round steel. The bottom ends of the two length plates 31 are fixedly connected to the worktable 2, and the sizing assembly 3 is mounted on the worktable 2 via the length plates 31. Six lifting grooves 405 are opened on both sides of the inner wall of the reducing groove 404. Lifting blocks 407 are slidably connected inside the six lifting grooves 405. The opposite ends of each pair of lifting blocks 407 are rotatably connected to the two ends of three reducing rollers 406. The three reducing rollers 406 cooperate with each other to reduce the diameter of the round steel and apply prestress.
[0027] Between every two opposing lifting blocks 407, a reducing frame 408 is fixedly installed and slidably connected to the lifting groove 405. Three cylinder bases 409 are fixedly installed on the reducing blocks 402, each located on one side of the reducing groove 404. A sliding cylinder 410 is fixedly installed on one side of each of the three cylinder bases 409. The movable ends of the three sliding cylinders 410 are fixedly connected to the opposite side of the three reducing frames 408. When the sliding cylinders 410 extend or retract, they push the reducing frame 408 from one side, causing the reducing frame 408 to push the lifting blocks 407 to slide along the lifting groove 405, thus adjusting the position of the reducing roller 406 relative to the reducing groove 404. The bottom ends of both first limiting plates 401 are fixedly connected to the worktable 2, and the reducing assembly 4 is mounted on the worktable 2 via the first limiting plates 401.
[0028] A pusher frame 7 is fixedly installed on one side of the sizing and reducing machine frame 1. A pusher cylinder 6 is fixedly installed in the middle of the pusher frame 7. A pusher plate 5 that is slidably connected to the worktable 2 is fixedly installed on the movable end of the pusher cylinder 6. The pusher cylinder 6 performs telescopic movement and pushes the pusher plate 5 from one side. The pusher plate 5 conveys and pushes the round steel.
[0029] In this embodiment, the following actions are taken: The cylinder 6 extends and retracts, pushing the push plate 5 from one side. The push plate 5 conveys and pushes the round steel. The sliding cylinder 410 extends and retracts, pushing the reducing frame 408 from one side. The reducing frame 408 pushes the lifting block 407 to slide along the lifting groove 405, adjusting the position of the reducing roller 406 relative to the reducing groove 404. The three reducing rollers 406 cooperate to reduce the diameter of the round steel and apply prestress. The lifting cylinder 33 extends and retracts, pushing the connecting platform 34 from the top to adjust the height of the sizing component 35. The micro cylinder 354 extends and retracts, pushing the movable block 353 from one side, causing the movable block 353 to slide along the movable groove 355, adjusting the distance between the two sizing plates 352, and performing a sizing operation on the round steel.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A reducing sizing mill for producing round steel bars, characterized in that, The device includes a sizing and reducing frame, with a worktable fixedly mounted at its top. Two sizing components are fixedly mounted on one side of the top of the worktable, and a sizing component is fixedly mounted on the other side. Each sizing component includes a first limiting plate and a sizing block. The top of the first limiting plate is fixedly connected to the bottom of the sizing block. A second limiting plate is fixedly mounted at the top of the sizing block. A sizing groove is formed in the middle of the sizing block, and three sizing rollers are rotatably connected inside the sizing groove. The sizing component includes two length plates and a top plate. The tops of the two length plates are fixedly connected to both sides of the bottom of the top plate. A lifting cylinder is fixedly mounted in the middle of the top plate. A connecting platform is fixedly mounted on the movable end of the lifting cylinder. Several sizing components are fixedly mounted on the bottom of the connecting platform. The lifting cylinder performs telescopic movements, pushing the connecting platform from the top to adjust the height of the sizing components.
2. The reducing sizing mill for round steel production according to claim 1, characterized in that, Each of the aforementioned sizing components includes a sizing shell and two sizing plates. The bottom end of the sizing shell has a movable groove, and two movable blocks are slidably connected inside the movable groove. The bottom ends of the two movable blocks are respectively fixedly connected to the top ends of the two sizing plates. Miniature cylinders are fixedly installed on both sides of the inner wall of the movable groove. The movable ends of the two miniature cylinders are respectively fixedly connected to the opposite side of the two movable blocks. The top end of the sizing shell is fixedly connected to a connecting platform. When the miniature cylinders perform telescopic movements, they push the movable blocks from one side, causing the movable blocks to slide along the movable groove, thereby adjusting the distance between the two sizing plates and performing a sizing operation on the round steel.
3. The reducing sizing mill for round steel production according to claim 1, characterized in that, The bottom ends of both length plates are fixedly connected to the worktable, and the sizing assembly is mounted on the worktable via the length plates.
4. A reducing sizing mill for round steel production according to claim 1, characterized in that, Six lifting grooves are respectively opened on both sides of the inner wall of the reducing groove. Lifting blocks are slidably connected inside each of the six lifting grooves. The opposite ends of each pair of lifting blocks are rotatably connected to the two ends of three reducing rollers. The three reducing rollers cooperate with each other to reduce the diameter of the round steel and apply prestress.
5. A reducing sizing mill for round steel production according to claim 4, characterized in that, Between each pair of lifting blocks, a reducing frame is fixedly installed and slidably connected to the lifting groove. Three cylinder bases are fixedly installed on the reducing blocks, each located on one side of the reducing groove. A sliding cylinder is fixedly installed on one side of each of the three cylinder bases. The movable ends of the three sliding cylinders are fixedly connected to the opposite side of the three reducing frames. The sliding cylinders extend and retract, pushing the reducing frame from one side. The reducing frame pushes the lifting block to slide along the lifting groove, adjusting the position of the reducing roller relative to the reducing groove.
6. A reducing sizing mill for round steel production according to claim 1, characterized in that, The bottom ends of both first limiting plates are fixedly connected to the worktable, and the diameter reduction assembly is installed on the worktable through the first limiting plates.
7. A reducing sizing mill for round steel production according to claim 1, characterized in that, A pusher frame is fixedly installed on one side of the sizing and reducing machine frame, and a pusher cylinder is fixedly installed in the middle of the pusher frame. A pusher plate that is slidably connected to the worktable is fixedly installed on the movable end of the pusher cylinder. The pusher cylinder performs telescopic movement and pushes the pusher plate from one side, and the pusher plate conveys and pushes the round steel.