Thickness control mechanism for rolling mill

Abstract

The utility model relates to the technical field of strip steel production, in particular to a thickness control mechanism for a rolling mill, which comprises a support frame, a lower roller is rotatably connected to a position below the inner wall of the support frame, an upper roller is arranged at a position above the inner wall of the support frame, and an adjusting mechanism is arranged at the top of the support frame. The two second gears which are meshed with each other synchronously rotate in opposite directions, and the two first gears are driven to rotate together through the rotating shaft, so that the two toothed plates transversely move in opposite directions, the angles of the hinge rods connected with the two sides of the sliding frame are generated, and therefore the sliding frame is driven to slide in the sliding way. The distance between the upper roller and the lower roller of the sliding frame can be conveniently adjusted, and due to the fact that the upper roller is adjusted through stress on the two sides during adjustment, the problem that in a comparison scheme, due to long-time use, the single side is prone to being excessively abraded, and the problem that in the rolling process of a strip, camber is prone to being generated can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of strip steel production technology, specifically a thickness control mechanism for rolling mills. Background Technology

[0002] A rolling mill is a piece of equipment used to realize the metal rolling process. It is mainly used to change the shape, size and properties of metal materials. The rolling mill work roll gap control mechanism plays a vital role in steel rolling production, as it directly affects the thickness accuracy and quality of the plates.

[0003] Existing technology, such as publication number CN220005405U, provides a rolling device for processing forged alloy plates, including: a base; an adjusting device rotatably mounted on one side of the top of the base, a limit rod fixedly mounted on the other side of the top of the base, and a mounting plate fixedly mounted on the top of the limit rod; two rolling mills respectively set on the top of the base, a threaded block fixedly mounted on one side of the outer surface of one rolling mill, and a limit block fixedly mounted on the other side of the outer surface of the rolling mill. This invention provides a rolling device for processing forged alloy plates, which adjusts the distance between the upper and lower rolling mills by rotating the adjusting device to engage the threaded block of the upper rolling mill. This device has a simple structure, strong practicality, and can adjust the distance between the upper and lower rolling mills according to the thickness of the forged alloy plate, while maintaining the characteristic that both the upper and lower rolling mills can rotate. This maintains the rolling effect and improves the practicality and adaptability of the rolling device.

[0004] In this scheme, the distance between the upper and lower rolling mills is adjusted by rotating the adjusting device and engaging the threaded block of the upper rolling mill. However, because the driving force for adjustment is set on one side, prolonged use can easily lead to excessive wear on one side, causing the strip to easily develop a "sickle bend" problem during rolling. This problem is mainly caused by uneven deformation during the rolling process. When the two sides of the strip extend differently, i.e., one side deforms more and the other side deforms less, a "sickle bend" will occur. The main reason for the "sickle bend" in strip rolling is the inconsistent pressing depth on both sides of the rolling mill rolls. In view of this, we propose a thickness control mechanism for the rolling mill. Utility Model Content

[0005] The purpose of this utility model is to provide a thickness control mechanism for rolling mills, which solves the problem of "sickle bend" in strip rolling caused by inconsistent pressing depth on both sides of the roll.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A thickness control mechanism for a rolling mill includes a support frame, a lower roll rotatably connected to the lower part of the inner wall of the support frame, an upper roll disposed at the upper part of the inner wall of the support frame, and an adjustment mechanism disposed at the top of the support frame.

[0008] The adjusting mechanism includes a slide rail, with a slide frame slidably connected to the inner wall of the slide rail. The upper roller is located on the inner wall of the slide frame and is rotatably connected to the inner wall of the slide frame. Hinged rods are respectively hinged to the top of the two hinged rods, and toothed plates are respectively hinged to the top of the two hinged rods. The toothed plates are in contact with the top of the support frame. A limit buckle is fixedly connected to the lower part of the top of the support frame, and the two toothed plates are slidably connected to the inner wall of the limit buckle.

[0009] Preferably, multiple sets of notches are provided on one side of each of the two toothed plates, and the notches on the two toothed plates are staggered, so that the two toothed plates overlap through the notches.

[0010] Preferably, the tops of the two toothed plates are respectively meshed with a first gear, and the first gear is rotatably connected to the inner wall of the support frame via a rotating shaft.

[0011] Preferably, a second gear is fixedly connected to each of the two shafts connected by the first gears, and the two sets of second gears mesh with each other.

[0012] Preferably, a servo motor is fixedly connected to one side of the bottom of the support frame, and a third gear is fixedly connected to the output shaft of the servo motor, and the third gear meshes with one of the second gears.

[0013] Preferably, a support block is fixedly connected to the inner wall of the support frame at a position below the lower roller, and multiple sets of support rollers are rotatably connected to the inner wall of the support block, with the support rollers in contact with the surface of the lower roller.

[0014] Preferably, a pressure block is fixedly connected to the inner wall of the sliding frame at a position above the upper roller, and multiple sets of pressure rollers are rotatably connected to the inner wall of the pressure block, with the pressure rollers in contact with the outer wall of the upper roller.

[0015] By employing the above technical solution, this utility model provides a thickness control mechanism for rolling mills. It possesses at least the following beneficial effects:

[0016] I. This utility model drives a servo motor to rotate a third gear, which in turn drives a second gear meshing with the third gear to rotate. This causes the two meshing second gears to rotate synchronously in opposite directions. The rotating shaft then drives two first gears to rotate together, causing the two toothed plates to move laterally in opposite directions. This causes the angle of the hinge rods connected to both sides of the slide frame to change, thereby causing the slide frame to slide in the slide rail. This facilitates the adjustment of the distance between the upper and lower rollers of the slide frame. Furthermore, since the upper roller is adjusted by applying force from both sides, it effectively avoids the problem of excessive wear on one side due to prolonged use in the comparative solution, which can easily lead to a "sickle bend" problem in the strip during the rolling process.

[0017] Second, this utility model provides support by setting up support blocks and pressure blocks at the main stress points of the strip extrusion between the upper and lower rolls. This effectively avoids the problem of excessive compression at the rotating connection between the upper and lower rolls. Furthermore, by setting support rollers and pressure rollers on the support blocks and pressure blocks respectively, while providing good support for the upper and lower rolls, the rolling contact between the support rollers and pressure rollers and the surfaces of the upper and lower rolls reduces the resistance during the rotation of the upper and lower rolls and reduces the loss of driving force. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial cross-sectional view of the present invention;

[0021] Figure 3 This diagram illustrates the connection relationship between the sliding frame and its various components in this utility model.

[0022] Figure 4 This is a structural diagram of the toothed plate in this utility model.

[0023] In the diagram: 1. Support frame; 2. Lower roller; 21. Support block; 22. Support roller; 3. Upper roller; 31. Pressure block; 32. Pressure roller; 4. Adjustment mechanism; 41. Slide rail; 42. Slide frame; 43. Hinge rod; 44. Tooth plate; 441. Notch; 45. Limit buckle; 46. First gear; 47. Second gear; 48. Third gear; 49. Servo motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] A thickness control mechanism for a rolling mill, such as Figure 1 - Figure 4 As shown, the system includes a support frame 1. A lower roller 2 is rotatably connected to the lower part of the inner wall of the support frame 1, and an upper roller 3 is positioned above the inner wall of the support frame 1. An adjustment mechanism 4 is located on the top of the support frame 1. The adjustment mechanism 4 includes a slide rail 41, and a slide frame 42 is slidably connected to the inner wall of the slide rail 41. The upper roller 3 is located on the inner wall of the slide frame 42 and is rotatably connected to the inner wall of the slide frame 42. Hinges 43 are hinged to both sides of the top of the slide frame 42. Toothed plates 44 are hinged to the top of the two hinged rods 43, and the toothed plates 44 are in contact with the top of the support frame 1. A limit buckle 45 is fixedly connected to the lower part of the top of the support frame 1, and the two toothed plates 44 are slidably connected to the inner wall of the limit buckle 45. Next, multiple sets of notches 441 are opened on one side of each of the two toothed plates 44, and the notches 441 on the two toothed plates 44 are staggered. The two toothed plates 44 overlap through the notches 441. The top of the two toothed plates 44 are respectively meshed with a first gear 46, and the first gear 46 is rotatably connected to the inner wall of the support frame 1 through a rotating shaft. The two first gears 46 are respectively fixedly connected to the rotating shafts connected to them, and the two sets of second gears 47 mesh with each other. A servo motor 49 is fixedly connected to one side of the bottom of the support frame 1. The output shaft of the servo motor 49 is fixedly connected to a third gear 48, and the third gear 48 meshes with one of the second gears 47.

[0027] In this embodiment, the servo motor 49 is started to drive the third gear 48 to rotate, which in turn drives the second gear 47 meshing with the third gear 48 to rotate. This causes the two meshing second gears 47 to rotate synchronously in opposite directions. The shaft drives the two first gears 46 to rotate together, causing the two toothed plates 44 to move laterally in opposite directions. This causes the hinge rods 43 connected to both sides of the slide frame 42 to change angle, thereby causing the slide frame 42 to slide on the slide rail 41, so as to facilitate the adjustment of the distance between the upper roller 3 and the lower roller 2 of the slide frame 42.

[0028] Example 2

[0029] like Figure 2As shown, a support block 21 is fixedly connected to the inner wall of the support frame 1 at a position below the lower roller 2. Multiple sets of support rollers 22 are rotatably connected to the inner wall of the support block 21, and the support rollers 22 are in contact with the surface of the lower roller 2. A pressure block 31 is fixedly connected to the inner wall of the slide frame 42 at a position above the upper roller 3. Multiple sets of pressure rollers 32 are rotatably connected to the inner wall of the pressure block 31, and the pressure rollers 32 are in contact with the outer wall of the upper roller 3.

[0030] In this embodiment, by setting support blocks 21 and pressure blocks 31 at the main stress points of the strip extrusion between the upper roll 3 and the lower roll 2, the problem of excessive compression at the rotational connection between the upper roll 3 and the lower roll 2 can be effectively avoided. Furthermore, by setting support rollers 22 and pressure rollers 32 on the support blocks 21 and the pressure blocks 31 respectively, while providing good support for the upper roll 3 and the lower roll 2, the surfaces of the support rollers 22 and the pressure rollers 32 that contact the upper roll 3 and the lower roll 2 are in a rolling contact manner, which can reduce the resistance when the upper roll 3 and the lower roll 2 rotate and reduce the loss of driving force.

[0031] In operation, the thickness control mechanism for a rolling mill of this invention utilizes a servo motor 49 to rotate a third gear 48, which in turn rotates a second gear 47 meshing with the third gear 48. This causes the two meshing second gears 47 to rotate synchronously in opposite directions. A rotating shaft then drives two first gears 46 to rotate together, causing two toothed plates 44 to move laterally in opposite directions. This causes an angle change in the hinge rods 43 connected to both sides of the slide frame 42, thereby causing the slide frame 42 to slide along the slide rail 41, facilitating the adjustment of the rolls on the slide frame 42. The distance between the upper roll 3 and the lower roll 2 is supported by setting support blocks 21 and pressure blocks 31 at the main stress points of the strip extrusion between the upper roll 3 and the lower roll 2. This can effectively avoid the problem of excessive compression at the rotational connection between the upper roll 3 and the lower roll 2. Furthermore, by setting support rollers 22 and pressure rollers 32 on support blocks 21 and pressure blocks 31 respectively, while providing good support for the upper roll 3 and the lower roll 2, the contact surfaces of support rollers 22 and pressure rollers 32 with the upper roll 3 and the lower roll 2 are in a rolling contact manner, which can reduce the resistance when the upper roll 3 and the lower roll 2 rotate.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thickness control mechanism for a rolling mill, comprising a support frame (1), characterized in that: The lower roller (2) is rotatably connected to the lower part of the inner wall of the support frame (1), the upper roller (3) is provided at the upper part of the inner wall of the support frame (1), and the top of the support frame (1) is provided with an adjustment mechanism (4). The adjustment mechanism (4) includes a slide rail (41), and a slide frame (42) is slidably connected to the inner wall of the slide rail (41). The upper roller (3) is located on the inner wall of the slide frame (42), and the upper roller (3) is rotatably connected to the inner wall of the slide frame (42). The top two sides of the slide frame (42) are respectively hinged with hinge rods (43), and the tops of the two hinge rods (43) are respectively hinged with toothed plates (44). The toothed plates (44) are in contact with the top of the support frame (1). A limit buckle (45) is fixedly connected to the lower part of the top of the support frame (1). The two toothed plates (44) are slidably connected to the inner wall of the limit buckle (45).

2. The thickness control mechanism for a rolling mill according to claim 1, characterized in that: Multiple sets of notches (441) are provided on one side of each of the two toothed plates (44), and the notches (441) on the two toothed plates (44) are staggered, and the two toothed plates (44) overlap through the notches (441).

3. A thickness control mechanism for a rolling mill according to claim 2, characterized in that: The tops of the two toothed plates (44) are respectively meshed with a first gear (46), and the first gear (46) is rotatably connected to the inner wall of the support frame (1) via a rotating shaft.

4. A thickness control mechanism for a rolling mill according to claim 3, characterized in that: A second gear (47) is fixedly connected to the shafts connecting the two first gears (46), and the two sets of second gears (47) mesh with each other.

5. A thickness control mechanism for a rolling mill according to claim 4, characterized in that: A servo motor (49) is fixedly connected to one side of the bottom of the support frame (1). The output shaft of the servo motor (49) is fixedly connected to a third gear (48), and the third gear (48) meshes with one of the second gears (47).

6. A thickness control mechanism for a rolling mill according to claim 1, characterized in that: The inner wall of the support frame (1) is fixedly connected to a support block (21) located below the lower roller (2). The inner wall of the support block (21) is rotatably connected to multiple sets of support rollers (22), and the support rollers (22) are in contact with the surface of the lower roller (2).

7. A thickness control mechanism for a rolling mill according to claim 1, characterized in that: The inner wall of the slide frame (42) is fixedly connected to a pressure block (31) above the upper roller (3). The inner wall of the pressure block (31) is rotatably connected to multiple sets of pressure rollers (32), and the pressure rollers (32) are in contact with the outer wall of the upper roller (3).

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