Head warping prevention device for hot rolled strip steel

Abstract

The utility model discloses an anti-upwarp device for hot rolling strip steel, which comprises a working table, opposite threaded rods are arranged on both sides of the top of the working table, sleeves matched with the opposite threaded rods are sleeved on upper and lower threads of the opposite threaded rods, a lower roller is arranged between the two sleeves at the lower end, and an upper roller is arranged between the two sleeves at the upper end. An upper roller is arranged between the two sleeves at the upper end, the diameter of the upper roller is slightly smaller than that of the lower roller, first gears are fixedly connected to the two sides of the lower roller, and second gears are fixedly connected to the two sides of the upper roller. The anti-warping device for the hot rolling strip steel is provided with the first gear, the second gear and the adjusting gear, the rolling speed of the upper roller and the rolling speed of the lower roller can be close through the adjusting gear, and the rolling speed of the upper roller is increased through the adjusting gear. And the problem of different extensions caused by diameter difference can be avoided to a great extent, and the possibility of head warping of the strip steel is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-rolled strip processing, and specifically relates to an anti-warping device for hot-rolled strips. Background Technique

[0002] In the patent application with the publication number of CN217831254U, it includes a number of swing arms that can be automatically reset. The upper ends of the swing arms on the same side are connected in series by a connecting rod. A pressure roller is arranged between the swing arms on the same axis on both sides. The pressure roller is installed at the lower end of the swing arm, and the pressure roller is located above the steel strip. The advantages are as follows: By arranging a pressure roller at the discharge of the hot-rolling production line, when the steel strip is sent out, the pressure roller will press the surface of the steel strip, thereby preventing it from warping, and then ensuring the safe and orderly progress of production work. The pressure roller can be freely telescoped when contacting the steel strip under the drive of the adjustment mechanism, so as to better adapt to the thickness of the steel strip, and at the same time avoid excessive squeezing force between the pressure roller and the steel strip, causing damage to the surface of the steel strip, and ensuring the production quality of the steel strip.

[0003] In the prior art including the above patent, setting a single pressure roller can only compress the strip steel unidirectionally. Different upper and lower forces on the strip steel may cause the steel to be uneven and uneven, and it is impossible to well avoid the problem of strip steel deformation and warping. In most existing hot rolling mills, the diameter of the upper roll is usually smaller than that of the lower roll. Therefore, the rolling speed of the upper roll is slightly less than that of the lower roll, and the elongation of the upper surface will be less than that of the lower surface. The greater the diameter difference, the greater the rolling speed difference, which will greatly increase the problem of strip steel warping. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-warping device for hot-rolled strips to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An anti-warping device for hot-rolled strips, including a workbench. Opposite threaded rods are arranged on both sides of the top of the workbench. Sleeve barrels adapted to them are sleeved on the upper and lower threads of the opposite threaded rods. A lower roll is arranged between the two lower sleeve barrels, and an upper roll is arranged between the two upper sleeve barrels. The diameter of the upper roll is slightly smaller than that of the lower roll. First gears are fixedly connected to both sides of the lower roll, and second gears are fixedly connected to both sides of the upper roll.

[0006] Further, fixed rods are arranged on one side of each of the first gear and the second gear. The first gear and the second gear are fixedly connected to their corresponding sleeve barrels through the fixed rods. An adjusting gear is arranged between the first gear and the second gear. The upper and lower ends of the adjusting gear are meshed with the first gear and the second gear respectively.

[0007] Furthermore, a linkage rod is provided on one side of the adjusting gear, and the upper and lower ends of the linkage rod are respectively rotatably connected to one side of the first gear and the second gear.

[0008] Furthermore, fixing plates are fixedly connected to both sides of the top of the workbench. A slider is fixedly connected to one side of the adjusting gear. A sliding groove for allowing the slider to pass through is formed on one side of the fixing plate, and the slider can move left and right along the sliding groove.

[0009] Furthermore, a stroke groove is formed on the fixing plate for allowing the lower fixing rod to pass through. A top plate is fixedly connected to the top end of the counter-rotating threaded rod.

[0010] Furthermore, a base is installed at the lower end of the workbench. Motors are installed on both sides of the top of the base. The output end of the upper motor penetrates through the bottom of the workbench and extends to the outside of the workbench. The output end of the motor is fixedly connected to the bottom end of the counter-rotating threaded rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The anti-warping device for hot-rolled strip steel is reasonable and has the following advantages:

[0012] (1) The present utility model is provided with a first gear, a second gear and an adjusting gear. By setting the adjusting gear, the rolling speeds of the upper rolling roll and the lower rolling roll can be made similar. In the use of most existing hot rolling mills, in order to prevent the strip steel from hitting the roller table due to buckling, usually the diameter of the upper rolling roll is smaller than that of the lower rolling roll. Therefore, the rolling speed of the upper rolling roll is slightly less than that of the lower rolling roll, and the elongation of the upper surface is less than that of the lower surface, which may cause the strip steel to have a slight warping. The greater the difference in diameter between the upper rolling roll and the lower rolling roll, the greater the difference in rolling speed. Therefore, the problem of strip steel warping will be greatly increased. The present utility model uses the adjusting gear to increase the rolling speed of the upper rolling roll, which can largely avoid the problem of different elongations caused by the diameter difference, and greatly reduce the possibility of strip steel warping.

[0013] (2) The present utility model is provided with a counter-rotating threaded rod. By setting the counter-rotating threaded rod, the distance between the upper rolling roll and the lower rolling roll can be adjusted, which can be better adjusted according to the width and thickness of the steel. When the steel is wider, the distance between the rolling rolls needs to be increased, and vice versa, otherwise it may affect the uniformity of the steel, and at the same time, it will also affect the rolling force of the strip steel. If the rolling force is too large, the strip steel will be bent, the skin layer will be broken, etc.; if the rolling force is too small, it will affect the forming effect of the steel. The present utility model can easily adjust the distance between the upper and lower rolling rolls, which can avoid the problems of strip steel deformation or cracking during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1Schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 Front view schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 Front view schematic diagram of the structure of the lower roller of the present utility model;

[0017] Figure 4 Schematic diagram of the structure of the upper roller of the present utility model;

[0018] Figure 5 Schematic diagram of the structure of the linkage rod of the present utility model;

[0019] Figure 6 Schematic diagram of the structure of the first gear of the present utility model;

[0020] Figure 7 Schematic diagram of the structure of the slider of the present utility model;

[0021] Figure 8 Schematic diagram of the structure of the fixing plate of the present utility model.

[0022] In the figure: 1, workbench; 2, lower roller; 3, upper roller; 4, top plate; 5, opposing threaded rod; 6, fixing plate; 7, motor; 8, sleeve; 9, fixed rod; 10, second gear; 11, first gear; 12, travel groove; 13, linkage rod; 14, adjusting gear; 15, slider; 16, chute; 17, base. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-8 , a technical solution provided by the present utility model: Embodiment 1:

[0025] In this embodiment, an anti-warping device for hot-rolled strip steel includes a workbench 1. On both sides of the top of the workbench 1, there are oppositely arranged threaded rods 5. Sleeves 8 adapted to them are sleeved on the upper and lower threads of the oppositely arranged threaded rods 5. A lower rolling roll 2 is arranged between the two lower sleeves 8 at the lower end, and an upper rolling roll 3 is arranged between the two upper sleeves 8 at the upper end. The diameter of the upper rolling roll 3 is slightly smaller than that of the lower rolling roll 2. On both sides of the lower rolling roll 2, there are fixedly connected first gears 11, and on both sides of the upper rolling roll 3, there are fixedly connected second gears 10. The oppositely arranged threaded rods 5 can adjust the distance between the upper rolling roll 3 and the lower rolling roll 2.

[0026] In this embodiment, on one side of each of the first gear 11 and the second gear 10, there is a fixed rod 9. The first gear 11 and the second gear 10 are fixedly connected to the corresponding sleeves 8 through the fixed rods 9. An adjusting gear 14 is arranged between the first gear 11 and the second gear 10. The upper and lower ends of the adjusting gear 14 are respectively meshed with the first gear 11 and the second gear 10.

[0027] When processing the strip steel, the first gear 11 can be driven to operate by an internal motor 7 (not shown in the figure). The rotation of the first gear 11 drives the rotation of the adjusting gear 14, and the rotation of the adjusting gear 14 drives the rotation of the second gear 10. The first gear 11 and the second gear 10 respectively drive the upper rolling roll 3 and the lower rolling roll 2 to rotate for processing the steel. The adjusting gear 14 can increase the rolling speed of the upper rolling roll, and can largely avoid the problem of different elongation amounts due to the diameter difference, greatly reducing the possibility of strip steel warping. Embodiment 2:

[0028] In this embodiment, on one side of the adjusting gear 14, there is a linkage rod 13. The upper and lower ends of the linkage rod 13 are respectively rotatably connected to one side of the first gear 11 and the second gear 10.

[0029] In this embodiment, on both sides of the top of the workbench 1, there are fixedly connected fixing plates 6. On one side of the adjusting gear 14, there is a slider 15 fixedly connected. On one side of the fixing plate 6, there is a chute 16 for accommodating the slider 15, and the slider 15 can move left and right along the chute 16.

[0030] In this embodiment, a travel groove 12 is provided on the fixing plate 6 for accommodating the lower fixed rod 9 at the lower end, and the top end of the oppositely arranged threaded rod 5 is fixedly connected with a top plate 4.

[0031] When adjusting the distance between the upper and lower rollers, the user can start the motor 7. After the motor 7 is started, the output shaft drives the opposed threaded rod 5 to rotate. The rotation of the opposed threaded rod 5 can drive the two sleeves 8 threadedly connected thereto to move towards each other along the opposed threaded rod 5. When the opposed threaded rod 5 rotates to one side, the distance between the two sleeves 8 on the same side decreases, and when rotated in the reverse direction, the distance increases. The movement of the sleeve 8 drives the linkage rod 13 to move respectively through the fixed rod 9. The movement of the linkage rod 13 drives the first gear 11 and the second gear 10 to move and increase the distance therebetween. At the same time, the slider 15 on one side of the adjusting gear 14 will move towards the middle side along the chute 16 to always remain meshed with the first gear 11 and the second gear 10. The movement of the first gear 11 and the second gear 10 drives the upper roller 3 and the lower roller 2 to move respectively. After the user adjusts according to the thickness of the steel, the motor 7 can be turned off.

[0032] Working principle: When manufacturing strip steel, it is necessary to adjust the appropriate roller position and distance. The distance between the upper roller 3 and the lower roller 2 needs to be adjusted according to the width and thickness of the steel. When the steel is wider, the distance between the rollers needs to be increased, and vice versa, the distance needs to be decreased. When adjusting the distance, the user can start the motor 7. After the motor 7 is started, the output shaft drives the opposed threaded rod 5 to rotate. The rotation of the opposed threaded rod 5 can drive the two sleeves 8 threadedly connected thereto to move towards each other along the opposed threaded rod 5. When the opposed threaded rod 5 rotates to one side, the distance between the two sleeves 8 on the same side decreases, and when rotated in the reverse direction, the distance increases. When the sleeve 8 moves, it drives the fixed rod 9 connected thereto to move. The movement of the fixed rod 9 drives the linkage rod 13 to move respectively. The movement of the linkage rod 13 drives the first gear 11 and the second gear 10 to move and increase the distance therebetween. At the same time, the slider 15 on one side of the adjusting gear 14 will move towards the middle side along the chute 16 to always remain meshed with the first gear 11 and the second gear 10. The movement of the first gear 11 and the second gear 10 drives the upper roller 3 and the lower roller 2 to move respectively. After the user adjusts according to the thickness of the steel, the motor 7 is turned off. At this time, the positions of the upper roller 3 and the lower roller 2 are fixed and can be used. The first gear 11 can be driven to operate by an internal motor 7 (not shown in the figure). The rotation of the first gear 11 drives the adjusting gear 14 to rotate. The rotation of the adjusting gear 14 drives the second gear 10 to rotate. The first gear 11 and the second gear 10 drive the upper roller 3 and the lower roller 2 to rotate respectively to process the steel.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A device for preventing warping of hot-rolled strip steel, comprising a workbench (1), characterized in that: Opposing threaded rods (5) are provided on both sides of the top of the workbench (1), and sleeves (8) adapted thereto are sleeved on the upper and lower threads of the opposing threaded rods (5), wherein a lower rolling roller (2) is provided between the two sleeves (8) at the lower ends, and an upper rolling roller (3) is provided between the two sleeves (8) at the upper ends, wherein the diameter of the upper rolling roller (3) is slightly smaller than that of the lower rolling roller (2), and first gears (11) are fixedly connected to both sides of the lower rolling roller (2), and second gears (10) are fixedly connected to both sides of the upper rolling roller (3).

2. The anti-warping device for hot-rolled strip according to claim 1, characterized in that: A fixing rod (9) is provided on one side of the first gear (11) and the second gear (10); the first gear (11) and the second gear (10) are fixedly connected to the sleeve (8) at the corresponding position thereof through the fixing rod (9); an adjusting gear (14) is provided between the first gear (11) and the second gear (10); the upper and lower ends of the adjusting gear (14) are respectively meshed with the first gear (11) and the second gear (10).

3. The anti-warping device for hot-rolled strip according to claim 2, characterized in that: A linkage rod (13) is provided on one side of the adjusting gear (14), and the upper and lower ends of the linkage rod (13) are rotatably connected to one side of the first gear (11) and the second gear (10) respectively.

4. The anti-warping device for hot-rolled strip according to claim 2, characterized in that: Both sides of the top of the workbench (1) are fixedly connected with a fixed plate (6), one side of the adjusting gear (14) is fixedly connected with a slider (15), one side of the fixed plate (6) is provided with a slide groove (16) for transferring the slider (15), and the slider (15) can move left and right along the slide groove (16).

5. The anti-warping device for hot-rolled strip according to claim 4, characterized in that: The fixing plate (6) is provided with a travel groove (12), and the travel groove (12) is used to transfer the fixing rod (9) at the lower end, and the top end of the opposing threaded rod (5) is fixedly connected to the top plate (4).

6. The anti-warping device for hot-rolled strip according to claim 1, characterized in that: A base (17) is installed at the lower end of the workbench (1), and motors (7) are installed on both sides of the top of the base (17). The output end of the upper end of the motor (7) passes through the bottom of the workbench (1) and extends to the outside of the workbench (1), and the output end of the motor (7) is fixedly connected to the bottom end of the opposite threaded rod (5).

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