Steel plate straightening and leveling machine

Abstract

The utility model discloses a steel plate straightening and leveling machine which comprises an upper machine base and a lower machine base, an upper large leveling roller assembly, an upper middle leveling roller assembly and an upper small leveling roller assembly are arranged in the upper machine base, and a lower large leveling roller assembly, a lower middle leveling roller assembly and a lower small leveling roller assembly are arranged in the lower machine base. A first adjusting mechanism used for adjusting the height of the upper large leveling roller assembly and the height of the upper middle leveling roller assembly is arranged on the upper machine base, and a second adjusting mechanism used for adjusting the height of the upper small leveling roller assembly is further arranged on the upper machine base. The upper large leveling roller assembly, the upper middle leveling roller assembly, the lower large leveling roller assembly and the lower middle leveling roller assembly are driven by a first transmission system to work synchronously, and the upper small leveling roller assembly and the lower small leveling roller assembly are driven by a second transmission system to work synchronously. And the first transmission system and the second transmission system are driven by a driving device to work synchronously. The large, medium and small leveling rollers with different diameters are utilized to correspond to steel plates with different thicknesses, so that the universality is greatly improved.

Description

Technical field:

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a steel plate straightening and leveling machine. Background technology:

[0002] Steel plates are often needed in the industrial manufacturing process, and the raw materials of steel plates are usually coils. In order to ensure smooth production and feeding, it is usually necessary to level and correct the steel plates at the front end of the transmission mechanism to ensure that the steel plates sent to the machine tool are flat materials. Traditional leveling mechanisms usually use leveling rollers of a single size, which are only very effective in leveling coils of appropriate thickness, but cannot achieve a good leveling effect for coils of different thicknesses, and have poor versatility. For example, a leveling mechanism of a leveling machine with Chinese patent application number 201120206549.8, in the technical solution disclosed in the patent, the leveling rollers of the three groups of leveling assemblies are of the same size, only the number is different. For very thin or very thick steel plates, when passing through the same size of leveling rollers, it is impossible to eliminate the internal stress and achieve leveling, resulting in the steel plates after passing through the leveling mechanism still having a certain curvature, resulting in the processed products failing to achieve ideal flatness.

[0003] In view of this, the inventor proposes the following technical solution. Utility model content:

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a steel plate straightening and leveling machine.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a steel plate straightening and leveling machine, comprising: an upper machine base and a lower machine base, characterized in that an upper large leveling roller assembly, an upper middle leveling roller assembly and an upper small leveling roller assembly are arranged in the upper machine base, and a lower large leveling roller assembly, a lower middle leveling roller assembly and a lower small leveling roller assembly are arranged in the lower machine base, wherein a first adjustment mechanism for adjusting the height of the upper large leveling roller assembly and the upper middle leveling roller assembly is arranged on the upper machine base, and a second adjustment mechanism for adjusting the height of the upper small leveling roller assembly is also arranged on the upper machine base; the upper large leveling roller assembly and the upper middle leveling roller assembly are driven to work synchronously with the lower large leveling roller assembly and the lower middle leveling roller assembly through a first transmission system, the upper small leveling roller assembly and the lower small leveling roller assembly are driven to work synchronously through a second transmission system, and the first transmission system and the second transmission system are driven to work synchronously through a driving device.

[0006] Furthermore, in the above technical solution, the upper machine base and the lower machine base are also provided with an upper clamping wheel group and a lower clamping wheel group, which are respectively located at the front end of the upper large leveling roller assembly and the lower large leveling roller assembly and are used to cooperate in flattening the incoming steel plate, and the upper clamping wheel group and the lower clamping wheel group are arranged in two groups in parallel and are linked to the first transmission system.

[0007] Furthermore, in the above technical solution, the lower end of the first adjustment mechanism is provided with a first upper mold base for supporting the upper large leveling roller assembly and the upper middle leveling roller assembly, and the upper machine base is provided with a first elastic component for elastic floating of the first upper mold base; the lower end of the second adjustment mechanism is provided with a second upper mold base for supporting the upper small leveling roller assembly, and the upper machine base is also provided with a second elastic component for elastic floating of the second upper mold base.

[0008] Furthermore, in the above technical solution, four first adjustment mechanisms are provided and distributed in a matrix on the four corners of the first upper mold base, and the first adjustment mechanism includes a lifting vertical rod that vertically penetrates the upper machine base and is connected to the first upper mold base, a horizontal adjustment rod arranged above the upper machine base, a worm gear device arranged at the connection between the lifting vertical rod and the horizontal adjustment rod, and an adjustment wheel arranged at the end of the horizontal adjustment rod; four second adjustment mechanisms are provided and distributed in a matrix on the four corners of the second upper mold base, and the second adjustment mechanism has the same structure as the first adjustment mechanism.

[0009] Furthermore, in the above technical solution, a feed adjusting device and a discharge adjusting device are provided at both ends of the lower machine base, wherein the feed adjusting device is located on one side of the lower large leveling roller assembly, and the discharge adjusting device is located on one side of the lower small leveling roller assembly; the discharge adjusting device is provided with a first limit sleeve and a second limit sleeve for limiting the discharge of the steel plate and capable of laterally adjusting and moving.

[0010] Furthermore, in the above technical scheme, the first transmission system includes a first transmission gear group installed on one end of the lower large smoothing roller assembly and the lower middle smoothing roller assembly and meshing with each other for transmission, a second transmission gear group arranged at one end of the lower large smoothing roller assembly and the lower middle smoothing roller assembly and meshing with each other, a first transmission shaft arranged on the lower machine base and located between the lower large smoothing roller assembly and the lower clamping wheel group, a third transmission gear group arranged on the upper machine base and located between the first transmission gear group and the upper clamping wheel group for transmitting kinetic energy, a first transmission sprocket group arranged between the first transmission shaft and the third transmission gear group, a first driving gear arranged at one end of the first transmission shaft and meshing with the first transmission gear group, and a second transmission sprocket group arranged between the other end of the first transmission shaft and the driving device, the second transmission system has the same structure as the first transmission system, and is symmetrically installed and distributed.

[0011] Furthermore, in the above technical solution, the first transmission gear set includes a driven gear installed on the end of the roller shaft in the lower large leveling roller assembly and the lower middle leveling roller assembly, and a transition gear arranged between the two driven gears, wherein the driven gears in the lower large leveling roller assembly and the lower middle leveling roller assembly are of different sizes.

[0012] Furthermore, in the above technical scheme, the ratio of the diameters of the leveling rollers in the upper large leveling roller assembly, the upper middle leveling roller assembly and the upper small leveling roller assembly is 36:27:20; the diameters of the leveling rollers in the lower large leveling roller assembly are equal to those in the upper large leveling roller assembly, the diameters of the leveling rollers in the lower middle leveling roller assembly are equal to those in the upper middle leveling roller assembly, and the diameters of the leveling rollers in the lower small leveling roller assembly and the upper small leveling roller assembly are equal.

[0013] Furthermore, in the above technical scheme, the ratio of the diameters of the leveling rollers in the upper large leveling roller assembly, the upper middle leveling roller assembly and the upper small leveling roller assembly is 54:29:27; the diameters of the leveling rollers in the lower large leveling roller assembly and the upper large leveling roller assembly are equal, the diameters of the leveling rollers in the lower middle leveling roller assembly and the upper middle leveling roller assembly are equal, and the diameters of the leveling rollers in the lower small leveling roller assembly and the upper small leveling roller assembly are equal.

[0014] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model adopts three groups of large, medium and small leveling rollers arranged and distributed in sequence, and the steel plates are leveled synchronously. The large, medium and small leveling rollers of three different diameters are used to correspond to steel plates of different thicknesses, which can not only greatly improve the versatility and be applicable to a variety of steel plates, but also after passing through three different sizes of leveling rollers, the stress elimination effect is better, which can make the steel plate flatter. Secondly, the three groups of leveling rollers are synchronously connected to the drive device by the first transmission system and the second transmission system, thereby driving the upper large leveling roller assembly, the upper middle leveling roller assembly, the lower large leveling roller assembly, the lower middle leveling roller assembly, the upper small leveling roller assembly and the lower small leveling roller assembly to work synchronously, and can ensure that the linear speed is equal, thereby realizing the synchronous rolling of the steel plate. Description of the drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the transmission system in the utility model. Specific implementation method:

[0019] The utility model is further described below in conjunction with specific embodiments and drawings.

[0020] See Figures 1 to 4 As shown, a steel plate straightening and leveling machine comprises: an upper machine base 1 and a lower machine base 2, wherein the upper machine base 1 is provided with an upper large leveling roller assembly 3, an upper middle leveling roller assembly 4 and an upper small leveling roller assembly 5, and the lower machine base 2 is provided with a lower large leveling roller assembly 6, a lower middle leveling roller assembly 7 and a lower small leveling roller assembly 8, wherein the upper machine base 1 is provided with a first adjustment mechanism 11 for adjusting the height of the upper large leveling roller assembly 3 and the upper middle leveling roller assembly 4, and the upper machine base 1 is also provided with a second adjustment mechanism 12 for adjusting the height of the upper small leveling roller assembly 5; the upper large leveling roller assembly 3 and the upper middle leveling roller assembly 4 are driven to work synchronously with the lower large leveling roller assembly 6 and the lower middle leveling roller assembly 7 through a first transmission system A, and the upper small leveling roller assembly 5 and the lower small leveling roller assembly 8 are driven to work synchronously through a second transmission system B, and the first transmission system A and the second transmission system B are driven to work synchronously through a driving device 9. Three groups of leveling rollers, large, medium and small, are arranged and distributed in sequence, and the steel plates are leveled synchronously. The three different diameters of leveling rollers, large, medium and small, are used to correspond to steel plates of different thicknesses. This can not only greatly improve the versatility and be applicable to a variety of steel plates, but also achieve better stress elimination after passing through three different sizes of leveling rollers, which can make the steel plates more flat. Secondly, the three groups of leveling rollers are synchronously connected to the drive device 9 by the first transmission system A and the second transmission system B, thereby driving the upper large leveling roller assembly 3, the upper middle leveling roller assembly 4, the lower large leveling roller assembly 6, the lower middle leveling roller assembly 7 to work synchronously with the upper small leveling roller assembly 5 and the lower small leveling roller assembly 8, and ensuring that the linear speed is equal, thereby realizing synchronous rolling of the steel plates. In addition, the upper large leveling roller assembly 3 and the upper middle leveling roller assembly 4 are controlled by the first adjustment mechanism 11 to synchronously adjust the height, and the upper small leveling roller assembly 5 is controlled by the second adjustment mechanism 12 to independently adjust the height, thereby realizing the selective use of leveling rollers of different sizes for leveling steel plates of different thicknesses.

[0021] The upper machine base 1 and the lower machine base 2 are also provided with an upper clamping wheel group 13 and a lower clamping wheel group 14, which are respectively located at the front end of the upper large leveling roller assembly 3 and the lower large leveling roller assembly 6 and are used to cooperate with flattening the incoming steel plate, and two groups of the upper clamping wheel group 13 and the lower clamping wheel group 14 are arranged in parallel and linked with the first transmission system A. At least two groups of upper clamping wheel groups 13 and lower clamping wheel groups 14 are added to the front end of the three groups of leveling rollers to perform the feeding positioning of the steel plate, and the two groups of upper clamping wheel groups 13 and lower clamping wheel groups 14 are used to flatten the incoming steel plate to ensure that the steel plate enters the leveling machine horizontally, thereby ensuring that the steel plate is evenly stressed when entering between the upper and lower rollers, and achieving efficient stress elimination.

[0022] The first adjustment mechanism 11 has a first upper die holder 110 at the lower end thereof for supporting the upper large leveling roller assembly 3 and the upper middle leveling roller assembly 4, and the upper machine base 1 has a first elastic component 15 for elastically floating the first upper die holder 110; the second adjustment mechanism 12 has a second upper die holder 120 at the lower end thereof for supporting the upper small leveling roller assembly 5, and the upper machine base 1 has a second elastic component 16 for elastically floating the second upper die holder 120. The first elastic component 15 and the second elastic component 16 are arranged beside the first adjustment mechanism 11 and the second adjustment mechanism 12, and the first elastic component 15 and the second elastic component 16 act on the first upper die holder 110 and the second upper die holder 120 respectively, so that the upper large leveling roller assembly 3, the upper middle leveling roller assembly 4 and the upper small leveling roller assembly 5 can be elastically pressed against the steel plate in a floating manner, so as to avoid scratches on the leveling rollers by burrs on the steel plate, and to improve the service life of the leveling rollers.

[0023] There are four first adjustment mechanisms 11, which are distributed in a matrix at the four corners of the first upper die base 110. The first adjustment mechanism 11 includes a lifting rod 111 that vertically penetrates the upper die base 1 and is connected to the first upper die base 110, a horizontal adjustment rod 112 arranged above the upper die base 1, a worm gear device 113 arranged at the connection between the lifting rod 111 and the horizontal adjustment rod 112, and an adjustment wheel 114 arranged at the end of the horizontal adjustment rod 112; there are four second adjustment mechanisms 12, which are distributed in a matrix at the four corners of the second upper die base 120, and the second adjustment mechanism 12 has the same structure as the first adjustment mechanism 11. The four first adjustment mechanisms 11 are respectively arranged at the corners of the first upper die base 110 and can be adjusted independently, so that when the height of the first upper die base 110 is adjusted in coordination, the height of different corners of the first upper die base 110 can also be fine-tuned independently, so that the first upper die base 110 can be tilted within a certain range to deal with the leveling of slightly curved steel plates.

[0024] The two ends of the lower machine base 2 are provided with a feed adjustment device C and a discharge adjustment device D, wherein the feed adjustment device C is located on one side of the lower large leveling roller assembly 6, and the discharge adjustment device D is located on one side of the lower small leveling roller assembly 8; the discharge adjustment device D is provided with a first limiting sleeve D1 and a second limiting sleeve D2 for limiting the discharge of the steel plate and capable of lateral adjustment and movement. The first limiting sleeve D1 and the second limiting sleeve D2 are provided on the discharge adjustment device D to limit the discharged steel plate, ensuring that the steel plate passing through the first limiting sleeve D1 and the second limiting sleeve D2 can be discharged smoothly.

[0025] The first transmission system A includes a first transmission gear set A1 installed on one end of the lower large leveling roller assembly 6 and the lower middle leveling roller assembly 7 and meshing with each other for transmission, a second transmission gear set A2 arranged at one end of the lower large leveling roller assembly 6 and the lower middle leveling roller assembly 7 and meshing with each other, a first transmission shaft A3 arranged on the lower machine base 2 and located between the lower large leveling roller assembly 6 and the lower clamping wheel set 14, a third transmission gear set A4 arranged on the upper machine base 1 and located between the first transmission gear set A1 and the upper clamping wheel set 13 for transmitting kinetic energy, a first transmission sprocket set A5 arranged between the first transmission shaft A3 and the third transmission gear set A4, a first driving gear A6 arranged at one end of the first transmission shaft A3 and meshing with the first transmission gear set A1, and a second transmission sprocket set A7 arranged between the other end of the first transmission shaft A3 and the driving device 9. The second transmission system has the same structure as the first transmission system A and is symmetrically installed and distributed.

[0026] The first transmission gear set A1 includes a driven gear A11 installed at the ends of the roller shafts in the lower large leveling roller assembly 6 and the lower middle leveling roller assembly 7, and a transition gear A12 disposed between the two driven gears A11, wherein the driven gears A11 in the lower large leveling roller assembly 6 and the lower middle leveling roller assembly 7 are of different sizes. By using driven gears A11 and transition gears A12 of different sizes in the first transmission gear set A1 for mating and meshing, and utilizing the difference in the number of teeth of different gears, the angular velocities of different leveling rollers are made the same.

[0027] In one embodiment, the ratio of the diameters of the leveling rollers in the upper large leveling roller assembly 3, the upper middle leveling roller assembly 4 and the upper small leveling roller assembly 5 is 36:27:20; the diameter of the lower large leveling roller assembly 6 is equal to the diameter of the leveling roller in the upper large leveling roller assembly 3, the diameter of the lower middle leveling roller assembly 7 is equal to the diameter of the leveling roller in the upper middle leveling roller assembly 4, and the diameter of the lower small leveling roller assembly 8 is equal to the diameter of the leveling roller in the upper small leveling roller assembly 5.

[0028] In another example, the ratio of the diameters of the leveling rollers in the upper large leveling roller assembly 3, the upper middle leveling roller assembly 4 and the upper small leveling roller assembly 5 is 54:29:27; the lower large leveling roller assembly 6 has the same diameter as the leveling roller in the upper large leveling roller assembly 3, the lower middle leveling roller assembly 7 has the same diameter as the leveling roller in the upper middle leveling roller assembly 4, and the lower small leveling roller assembly 8 has the same diameter as the leveling roller in the upper small leveling roller assembly 5.

[0029] In summary, when the utility model is working, the steel plate raw material enters from the feeding adjustment device C, and after being flattened by the two sets of upper clamping wheel groups 13 and the lower clamping wheel group 14, for thick steel plates, the upper large leveling roller assembly 3 and the lower large leveling roller assembly 6 cooperate to continuously bend and roll the steel plates to eliminate stress, ensuring that the steel plates sent out from the discharging adjustment device D are in a flat state and will not bend due to internal stress; for medium-thickness steel plates, the upper middle leveling roller assembly 4 and the lower middle leveling roller assembly 7 cooperate to continuously bend and roll the steel plates to eliminate stress, ensuring that the steel plates sent out from the discharging adjustment device D are in a flat state and will not bend due to internal stress; for thinner steel plates, the upper small leveling roller assembly 5 and the lower small leveling roller assembly 6 cooperate to continuously bend and roll the steel plates to eliminate stress, ensuring that the steel plates sent out from the discharging adjustment device D are in a flat state and will not bend due to internal stress; Component 8 cooperates to continuously bend and roll the steel plate to eliminate stress, ensuring that the steel plate sent out from the discharge adjustment device D is in a flat state and will not bend due to internal stress; of course, for steel plates of different thicknesses, through the height adjustment of the first adjustment mechanism 11 and the second adjustment mechanism 12, the large leveling roller assembly 3, the upper middle leveling roller assembly 4 and the upper small leveling roller assembly 5 can be selectively contacted with the steel plate, and the different diameters of the large leveling roller assembly 3, the upper middle leveling roller assembly 4 and the upper small leveling roller assembly 5 are utilized to make the bending width of the steel plate different, thereby achieving effective elimination of stress at different positions, ensuring that the steel plate sent out from the discharge adjustment device D is in a flat state, with higher flatness, and without any bending.

[0030] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A steel plate straightening and leveling machine, comprising: An upper machine base (1) and a lower machine base (2), characterized in that an upper large leveling roller assembly (3), an upper middle leveling roller assembly (4) and an upper small leveling roller assembly (5) are arranged in the upper machine base (1), and a lower large leveling roller assembly (6), a lower middle leveling roller assembly (7) and a lower small leveling roller assembly (8) are arranged in the lower machine base (2), wherein a first adjustment mechanism (11) for adjusting the height of the upper large leveling roller assembly (3) and the upper middle leveling roller assembly (4) is arranged on the upper machine base (1), and a first adjustment mechanism (11) for adjusting the height of the upper large leveling roller assembly (3) and the upper middle leveling roller assembly (4) is also arranged on the upper machine base (1). A second adjustment mechanism (12) is provided for adjusting the height of the upper small leveling roller assembly (5); the upper large leveling roller assembly (3) and the upper middle leveling roller assembly (4) are driven to work synchronously with the lower large leveling roller assembly (6) and the lower middle leveling roller assembly (7) via a first transmission system (A); the upper small leveling roller assembly (5) and the lower small leveling roller assembly (8) are driven to work synchronously via a second transmission system (B); and the first transmission system (A) and the second transmission system (B) are driven to work synchronously via a driving device (9).

2. A steel plate leveling and leveling machine according to claim 1, characterized in that: The upper machine base (1) and the lower machine base (2) are also provided with an upper clamping wheel group (13) and a lower clamping wheel group (14) respectively located at the front end of the upper large flattening roller assembly (3) and the lower large flattening roller assembly (6) and used to cooperate with the flattening of the incoming steel plate, and the upper clamping wheel group (13) and the lower clamping wheel group (14) are arranged in parallel in two groups and are linked to the first transmission system (A).

3. The steel plate leveling machine according to claim 1, characterized in that: The lower end of the first adjustment mechanism (11) is provided with a first upper die seat (110) for supporting the upper large leveling roller assembly (3) and the upper middle leveling roller assembly (4), and the upper machine base (1) is provided with a first elastic component (15) for elastically floating the first upper die seat (110); the lower end of the second adjustment mechanism (12) is provided with a second upper die seat (120) for supporting the upper small leveling roller assembly (5), and the upper machine base (1) is also provided with a second elastic component (16) for elastically floating the second upper die seat (120).

4. A steel plate leveling and leveling machine according to claim 3, characterized in that: Four first adjustment mechanisms (11) are provided and are distributed in a matrix at the four corners of the first upper die base (110). The first adjustment mechanism (11) comprises a lifting vertical rod (111) vertically penetrating the upper die base (1) and connected to the first upper die base (110), a horizontal adjustment rod (112) arranged above the upper die base (1), a worm gear device (113) arranged at the connection between the lifting vertical rod (111) and the horizontal adjustment rod (112), and an adjustment wheel (114) arranged at the end of the horizontal adjustment rod (112); four second adjustment mechanisms (12) are provided and are distributed in a matrix at the four corners of the second upper die base (120). The second adjustment mechanism (12) has the same structure as the first adjustment mechanism (11).

5. The steel plate leveling machine according to claim 1, characterized in that: A feed adjustment device (C) and a discharge adjustment device (D) are provided at both ends of the lower machine base (2), wherein the feed adjustment device (C) is located on one side of the lower large leveling roller assembly (6), and the discharge adjustment device (D) is located on one side of the lower small leveling roller assembly (8); the discharge adjustment device (D) is provided with a first limit sleeve (D1) and a second limit sleeve (D2) for limiting the discharge of the steel plate and capable of laterally adjusting and moving.

6. A steel plate leveling and leveling machine according to any one of claims 2 to 5, characterized in that: The first transmission system (A) comprises a first transmission gear set (A1) installed at one end of the lower large leveling roller assembly (6) and the lower middle leveling roller assembly (7) and meshing with each other for transmission, a second transmission gear set (A2) arranged at one end of the lower large leveling roller assembly (6) and the lower middle leveling roller assembly (7) and meshing with each other, a first transmission shaft (A3) arranged on the lower machine base (2) and located between the lower large leveling roller assembly (6) and the lower clamping wheel set (14), and a first transmission shaft (A3) arranged on the upper machine base (1) and located between the first transmission gear set (A1) and the upper The invention also provides a third transmission gear set (A4) for transmitting kinetic energy between the clamping wheel set (13), a first transmission sprocket set (A5) arranged between the first transmission shaft (A3) and the third transmission gear set (A4), a first driving gear (A6) arranged at one end of the first transmission shaft (A3) and meshing with the first transmission gear set (A1), and a second transmission sprocket set (A7) arranged between the other end of the first transmission shaft (A3) and the driving device (9), wherein the second transmission system has the same structure as the first transmission system (A) and is symmetrically installed and distributed.

7. The steel plate leveling and leveling machine according to claim 6, characterized in that: The first transmission gear set (A1) comprises a driven gear (A11) mounted on the ends of the roller shafts of the lower large leveling roller assembly (6) and the lower middle leveling roller assembly (7), and a transition gear (A12) arranged between the two driven gears (A11), wherein the driven gears (A11) in the lower large leveling roller assembly (6) and the lower middle leveling roller assembly (7) are of different sizes.

8. The steel plate leveling machine according to claim 6, characterized in that: The ratio of the diameters of the leveling rollers in the upper large leveling roller assembly (3), the upper middle leveling roller assembly (4) and the upper small leveling roller assembly (5) is 36:27:20; the diameters of the leveling rollers in the lower large leveling roller assembly (6) and the upper large leveling roller assembly (3) are equal, the diameters of the leveling rollers in the lower middle leveling roller assembly (7) and the upper middle leveling roller assembly (4) are equal, and the diameters of the leveling rollers in the lower small leveling roller assembly (8) and the upper small leveling roller assembly (5) are equal.

9. The steel plate leveling and leveling machine according to claim 6, characterized in that: The ratio of the diameters of the leveling rollers in the upper large leveling roller assembly (3), the upper middle leveling roller assembly (4) and the upper small leveling roller assembly (5) is 54:29:27; the diameters of the leveling rollers in the lower large leveling roller assembly (6) and the upper large leveling roller assembly (3) are equal, the diameters of the leveling rollers in the lower middle leveling roller assembly (7) and the upper middle leveling roller assembly (4) are equal, and the diameters of the leveling rollers in the lower small leveling roller assembly (8) and the upper small leveling roller assembly (5) are equal.

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