A reversible breakdown mill with adjustable bottom roll

Abstract

The utility model discloses a kind of reversible breakdown mill of adjustable lower roll, including breakdown mill main body, breakdown mill main body includes rack and the upper roll and lower roll placed in rack up and down, two ends of upper roll each is equipped with one upper shaft seat, two ends of lower roll each is equipped with one lower shaft seat;Upper roll lifting unit, upper roll lifting unit is installed in the upper of the rack of breakdown mill main body, for adjusting the height of upper roll in vertical direction;Lower roll lifting unit, lower roll lifting unit is installed in the lower of the rack of breakdown mill main body, lower roll lifting unit includes hydraulic motor, with the worm gear of hydraulic motor output end connection and the worm nut connected with worm gear, worm nut is fixedly connected with lower shaft seat, so that lower roll lifting unit can control lower roll lifting.The utility model discloses a kind of reversible breakdown mill of adjustable lower roll, can automatically adjust the height of lower roll, improve the convenience of operation, reduce the error of artificial operation, also improve the degree of automation of breakdown mill.

Description

Technical Field

[0001] This utility model relates to the field of billet mill technology, specifically to a reversible billet mill with adjustable lower rolls. Background Technology

[0002] A billet rolling mill is a key piece of equipment in the steel metallurgical industry, primarily used to press billets or ingots into semi-finished products of desired shapes. In modern steel production, the billet rolling mill is a crucial process, directly impacting subsequent rolling processes and the quality of the final product. However, existing billet rolling mills have some shortcomings in practical applications. Because the height of the lower roll needs to be adjusted during the billet rolling interval, and cooling water needs to be added simultaneously to cool the billet during rolling, this cooling water flows into the lower roll and its components. Therefore, using a motor to adjust the lower roll may pose a safety hazard. Existing traditional billet rolling mills often rely on manual adjustment, such as adjusting the lower roll height using shims. Shim adjustment is one of the traditional manual adjustment methods, with a relatively simple working principle and certain reliability and cost advantages. However, manual shim adjustment lacks flexibility and is prone to errors, leading to inaccurate roll height adjustment and affecting product stability and consistency. Secondly, frequent shim replacements increase equipment wear, which may reduce the billet rolling mill's efficiency and production quality. Utility Model Content

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a reversible billet mill with an adjustable lower roll. The lower roll lifting unit adopts an automated system powered by a hydraulic motor, which can automatically adjust the height of the lower roll, improve the convenience of operation, reduce human error, and improve the automation level of the billet mill.

[0004] Technical solution: This utility model discloses a reversible billet mill with adjustable lower rolls, comprising:

[0005] The main body of the billet mill includes a frame and an upper roll and a lower roll placed vertically within the frame. An upper shaft seat is installed at each end of the upper roll, and a lower shaft seat is installed at each end of the lower roll. The upper shaft seat and the lower shaft seat are connected to the frame through a slide rail.

[0006] An upper roller lifting unit is installed above the frame of the billet mill body and is used to adjust the height of the upper roller in the vertical direction.

[0007] The lower roll lifting unit is installed below the frame of the billet mill body. The lower roll lifting unit includes a hydraulic motor, a worm gear connected to the output end of the hydraulic motor, and a worm nut connected to the worm gear. The worm nut is fixedly connected to the lower shaft seat, thereby enabling the lower roll lifting unit to control the lifting of the lower roll.

[0008] Furthermore, it also includes a moving device, which includes a geared motor, a gear connected to the output end of the geared motor, and a rack that can mesh with the gear. The rack is fixed to the bottom of the billet machine body, thereby allowing the billet machine body to move along the length direction of the rack.

[0009] Furthermore, a first turning machine and a second turning machine are respectively provided on the feeding side and the discharging side of the billet mill body. The first turning machine is provided with a first centering roller conveyor on the side away from the billet mill body, and the second turning machine is provided with a second centering roller conveyor on the side away from the billet mill body.

[0010] Furthermore, an encoder is also installed on the geared motor.

[0011] Furthermore, a steel structure platform is installed on the upper part of the frame, and the upper roller lifting unit is set on the steel structure platform.

[0012] Furthermore, the upper roller lifting unit includes a drive motor, a coupling connected to the output end of the drive motor, and two transmission boxes connected to the coupling. The two transmission boxes are respectively connected to the upper shaft seats at both ends of the upper roller through a screw and nut assembly.

[0013] Furthermore, a pressure measuring unit is installed between the lead screw nut assembly and the upper shaft seat.

[0014] Furthermore, the steel structure platform is also equipped with a hydraulic balance cylinder.

[0015] Furthermore, it also includes a roll extraction device. The main body of the billet mill is provided with a hook that can be connected to the roll extraction device. The roll extraction device moves in the same direction as the moving device and is coaxial with the moving device. The roll extraction device is connected to the hook, thereby pulling out the main body of the billet mill to replace the upper roll and / or lower roll.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The height of the upper and lower rollers can be precisely adjusted by the upper and lower roller lifting unit to adapt to different working conditions and improve the production flexibility and operation convenience of the billet machine;

[0018] (2) By cooperating with the rack and geared motor of the moving device, the main body of the billet mill can be moved smoothly and the position of the billet mill can be adjusted, thereby changing the rolling pass of the upper and lower rolls, saving time and improving production efficiency.

[0019] (3) The pressure measurement unit monitors the pressure change between the upper and lower rolls in real time, which helps operators understand the working status and avoid production problems caused by excessive or insufficient pressure. Through accurate pressure data feedback, the operating parameters in the rolling process are optimized, and the lifting and tension of the upper and lower rolls are adjusted to improve the quality and consistency of the products.

[0020] (4) The steel structure platform installed on the upper part of the frame can provide additional support, enhance the stability of the main body of the billet machine, and ensure that the equipment still runs smoothly under high load. The steel structure platform is also equipped with a hydraulic balance cylinder, which can effectively counteract the unbalanced load caused by the lifting of the rolls and improve the stability and durability of the equipment during operation.

[0021] (5) A first turning machine and a second turning machine are respectively set on the feeding side and the discharging side of the billet machine body, and a first centering roller conveyor and a second centering roller conveyor are configured to guide the billet feeding and discharging, ensure that the billet remains stable during the process of entering and leaving the billet machine, reduce the phenomenon of jamming and blockage, and improve the smoothness of the production process. Attached Figure Description

[0022] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0023] Figure 1 This invention relates to a reversible billet mill with adjustable lower rolls;

[0024] Figure 2 This is a cross-sectional view of the blanking machine described in this utility model;

[0025] Figure 3 This is a side view of the blanking machine described in this utility model;

[0026] Figure 4 This is a top view of the reversible blanking machine described in this utility model.

[0027] In the diagram: 1. Main body of the billet mill; 11. Frame; 12. Upper roll; 121. Upper shaft seat; 13. Lower roll; 131. Lower shaft seat; 14. Steel structure platform; 15. Hydraulic balance cylinder; 16. Hook; 21. Hydraulic motor; 22. Worm gear; 23. Worm nut; 31. Gear motor; 311. Encoder; 32. Gear; 33. Rack; 4. First turning machine; 41. First centering roller conveyor; 5. Second turning machine; 51. Second centering roller conveyor; 61. Drive motor; 62. Coupling; 63. Transmission box; 64. Screw and nut assembly; 7. Pressure measuring unit; 8. Roll extraction device. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0030] like Figures 1 to 4 As shown, this utility model discloses a reversible billet mill with adjustable lower roll 13, comprising:

[0031] The main body 1 of the billet mill includes a frame 11 and an upper roll 12 and a lower roll 13 placed vertically within the frame 11. Each end of the upper roll 12 is equipped with an upper bearing seat 121, and each end of the lower roll 13 is equipped with a lower bearing seat 131. The upper bearing seat 121 and the lower bearing seat 131 are connected to the frame 11 through a slide rail.

[0032] An upper roller lifting unit is installed above the frame 11 of the main body 1 of the billet mill and is used to adjust the height of the upper roller 12 in the vertical direction.

[0033] The lower roller lifting unit is installed below the frame 11 of the billet mill body 1. The lower roller lifting unit includes a hydraulic motor 21, a worm gear 22 connected to the output end of the hydraulic motor 21, and a worm nut 23 connected to the worm gear 22. The worm nut 23 is fixedly connected to the lower shaft seat 131, thereby enabling the lower roller lifting unit to control the lifting of the lower roller 13.

[0034] With the above structure, the main body 1 of the billet mill consists of a frame 11 and an upper roll 12 and a lower roll 13 placed vertically. The upper roll 12 is equipped with upper shaft seats 121 at both ends, and the lower roll 13 is equipped with lower shaft seats 131 at both ends. In order to adjust the height of the upper roll 12 and the lower roll 13, the upper roll lifting unit is installed above the frame 11 to adjust the height of the upper roll 12 in the vertical direction. The lower roll lifting unit is installed below the frame 11. The hydraulic motor 21 is used as the power source to drive the lower roll 13 by means of the worm gear 22 and the worm nut 23.

[0035] The worm gear nut 23 is fixedly connected to the lower shaft seat 131. The hydraulic motor 21 drives the worm gear 22, causing the worm gear nut 23 to move linearly, thereby realizing the lifting and lowering of the lower roll 13. Specifically, the hydraulic motor 21 provides power to rotate the worm gear 22. The worm gear 22 is connected to the worm gear nut 23, and the internal helical structure of the worm gear nut 23 matches that of the worm gear 22. Therefore, when the worm gear 22 rotates, the worm gear nut 23 moves along the direction of the worm gear 22. Since the worm gear nut 23 is fixedly connected to the lower shaft seat 131, the linear movement of the worm gear nut 23 can drive the lower shaft seat 131 to move in the vertical direction, thereby realizing the lifting and lowering of the lower roll 13.

[0036] In this embodiment, the surfaces of the upper roll 12 and the lower roll 13 are provided with grooves for different rolling passes, enabling rolling to meet different processing requirements and product specifications. The grooves for the rolling passes of the upper roll 12 and the lower roll 13 can be adjusted according to the specific rolling process to ensure that the process parameters of each rolling stage are met, thereby improving product quality and production efficiency.

[0037] In this embodiment, the billet mill also includes a moving device. Through the combination of a reduction motor 31, a gear 32, and a rack 33, the main body 1 of the billet mill can move along the length of the rack 33. Specifically, the reduction motor 31 provides power, which is transmitted to the rack 33 meshing with it via the gear 32 connected to the output end of the reduction motor 31. The rack 33 is fixed to the bottom of the main body 1 of the billet mill. Due to the fixed position of the rack 33 at the bottom, the meshing of the rack 33 and the gear 32 allows the main body of the mill to move smoothly along the direction of the rack 33. By adjusting the power of the reduction motor 31, the entire movement process can be controlled more precisely. The combination of the rack 33 and the gear 32 ensures the smoothness and durability of the mechanical transmission. By moving the position of the main body 1 of the billet mill back and forth, the positions of the upper roll 12 and the lower roll 13 rolling the billet are changed. Combined with the different rolling pass patterns on the upper roll 12 and the lower roll 13, the effect of changing the rolling pass is achieved.

[0038] In this embodiment, a first turning machine 4 and a second turning machine 5 are respectively provided on the feed side and discharge side of the billet mill body 1. On the side of the first turning machine 4 and the second turning machine 5 away from the billet mill body 1, a first centering roller conveyor 41 matching the first turning machine 4 and a second centering roller conveyor 51 matching the second turning machine 5 are respectively provided. The first turning machine 4 and the second turning machine 5 are used to transport the billet. After the first turning machine 4 feeds the billet into the billet mill body 1 for rolling, the second turning machine 5 flips the rolled billet and feeds it back into the billet mill body 1 for rolling again. The first turning machine 4 flips the billet after the second rolling and feeds it back into the billet mill body 1 for rolling. The first turning machine 4 and the second turning machine 5 repeatedly flip the billet and feed it back into the billet mill body 1 for rolling multiple times until the complete rolling process is completed. Preferably, the first centering roller conveyor 41 and the second centering roller conveyor 51 can assist in the precise positioning of the billet, aligning it with the upper roll 12 and lower roll 13 of the billet mill, ensuring the smooth progress of the subsequent rolling process. The first turning machine 4 and the second turning machine 5, by turning the billet, cooperate with the first centering roller conveyor 41 and the second centering roller conveyor 51 to ensure that the finished product is smoothly discharged from the main body 1 of the billet mill, avoiding deformation or jamming of the billet during the discharge process.

[0039] In this embodiment, an encoder 311 is also installed on the geared motor 31, which enables more precise control when the blank-making machine body 1 moves. The encoder 311 provides feedback on the speed and position changes of the geared motor 31, allowing the control system to accurately obtain the motor's operating status and adjust it to ensure that the movement of the blank-making machine body 1 along the rack 33 is within a predetermined range, avoiding positioning errors or operational instability caused by over- or under-operation of the geared motor 31.

[0040] In this embodiment, a steel structure platform 14 is installed on the upper part of the frame 11. The upper roller lifting unit is set on the steel structure platform 14. Bolts can be used to fix the upper roller lifting unit to the steel structure platform 14, thereby making the connection between the upper roller lifting unit and the frame 11 more stable and improving the operational stability of the equipment. Specifically, the upper roller lifting unit includes a drive motor 61, a coupling 62, two transmission boxes 63, and screw and nut assemblies 64 connected to them respectively. One transmission box 63 is connected to one screw and nut assembly 64. The drive motor 61 provides power. The coupling 62 is connected to the output end of the drive motor 61. The drive motor 61 transmits power to the two transmission boxes 63. Each transmission box 63 is connected to the screw and nut assembly 64. The screw and nut assembly 64 controls the lifting and lowering of the upper bearing seats 121 at both ends of the upper roller 12 by rotation. The screw and nut assembly 64 converts the rotational motion of the transmission box 63 into the vertical lifting and lowering motion of the upper roller 12, thereby controlling the height adjustment of the upper roller 12 to adapt to different rolling requirements of the billet. Preferably, a pressure measuring unit 7 is provided between the lead screw nut assembly 64 and the upper shaft seat 121, which can monitor the pressure changes during the rolling process of the upper roll 12 in real time, avoid product quality problems caused by uneven pressure, and improve the safety and processing accuracy in the production process.

[0041] In this embodiment, a hydraulic balance cylinder 15 is also installed on the steel structure platform 14, which can effectively improve the balance and stability of the entire billet mill. The hydraulic balance cylinder 15 can maintain the level and stability of the steel structure platform 14, ensuring that the upper roll lifting unit is not affected by changes in external load when controlling the lifting of the upper roll 12, making the lifting force of the upper roll 12 more stable and uniform.

[0042] In this embodiment, a roll extraction device 8 is also included. A hook 16 is provided at the front end of the billet mill body 1. The roll extraction device 8 can connect to the hook 16, thereby pulling the upper roll 12 and / or the lower roll 13 out of the billet mill body 1 for replacement. The roll extraction device 8 moves in the same direction as the moving device and is coaxially aligned with it. The roll extraction device 8 and the moving device can work together to achieve a smooth and efficient roll replacement operation. The moving device moves the billet mill body 1 forward and then connects the hook 16 at the front end of the billet mill body 1 to the roll extraction device 8, thereby pulling out the billet mill body 1. This not only improves the convenience of the replacement operation but also avoids mechanical failures that may be caused by improper human operation.

[0043] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A reversible billet mill with an adjustable lower roll, characterized in that, include: The main body of the billet mill includes a frame and an upper roll and a lower roll placed vertically within the frame. An upper shaft seat is installed at each end of the upper roll, and a lower shaft seat is installed at each end of the lower roll. The upper shaft seat and the lower shaft seat are connected to the frame through a slide rail. An upper roller lifting unit is installed above the frame of the billet mill body and is used to adjust the height of the upper roller in the vertical direction. The lower roll lifting unit is installed below the frame of the billet mill body. The lower roll lifting unit includes a hydraulic motor, a worm gear connected to the output end of the hydraulic motor, and a worm nut connected to the worm gear. The worm nut is fixedly connected to the lower shaft seat, thereby enabling the lower roll lifting unit to control the lifting of the lower roll.

2. The reversible billet mill with adjustable lower rolls according to claim 1, characterized in that, The surfaces of the upper and lower rolls are respectively provided with different rolling passes.

3. The reversible billet mill with adjustable lower rolls according to claim 2, characterized in that, It also includes a moving device, which includes a geared motor, a gear connected to the output end of the geared motor, and a rack that can mesh with the gear. The rack is fixed to the bottom of the billet machine body, so that the billet machine body can move along the length direction of the rack.

4. The reversible billet mill with adjustable lower rolls according to claim 1, characterized in that, A first turning machine and a second turning machine are respectively provided on the feeding side and the discharging side of the billet mill body. The first turning machine is provided with a first centering roller conveyor on the side away from the billet mill body, and the second turning machine is provided with a second centering roller conveyor on the side away from the billet mill body.

5. The reversible billet mill with adjustable lower rolls according to claim 3, characterized in that, An encoder is also installed on the geared motor.

6. The reversible billet mill with adjustable lower rolls according to claim 1, characterized in that, A steel structure platform is also installed on the upper part of the frame, and the upper roller lifting unit is set on the steel structure platform.

7. The reversible billet mill with adjustable lower rolls according to claim 6, characterized in that, The upper roller lifting unit includes a drive motor, a coupling connected to the output end of the drive motor, and two transmission boxes connected to the coupling. The two transmission boxes are respectively connected to the upper shaft seats at both ends of the upper roller through a screw and nut assembly.

8. The reversible billet mill with adjustable lower rolls according to claim 7, characterized in that, A pressure measuring unit is installed between the lead screw and nut assembly and the upper shaft seat.

9. The reversible billet mill with adjustable lower rolls according to claim 6, characterized in that, The steel structure platform is also equipped with a hydraulic balance cylinder.

10. The reversible billet mill with adjustable lower rolls according to claim 3, characterized in that, It also includes a roll extraction device. The main body of the billet mill is provided with a hook that can be connected to the roll extraction device. The roll extraction device moves in the same direction as the moving device and is coaxial with the moving device. The roll extraction device is connected to the hook, thereby pulling out the main body of the billet mill to replace the upper roll and / or the lower roll.

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