Plate strip clamping and straightening device for rolling mill

Abstract

The utility model relates to the technical field of strip processing equipment, and provides a plate strip pinch straightening device for a rolling mill, which is characterized in that pinch rollers are rotationally arranged on a rack, and a pinch cavity is formed between the two pinch rollers; the inlet guide plate is arranged on the rack and located on the feeding side of the pinch roll. The upper straightening roller is rotationally arranged on the rack and located on the discharging side of the pinch roller; the lower straightening rollers are rotationally arranged on the rack and located below the upper straightening rollers, the upper straightening rollers are located between the two lower straightening rollers, a straightening cavity is formed between the upper straightening rollers and the lower straightening rollers close to the pinch rollers, a gap is reserved between the upper straightening rollers and the other lower straightening rollers, and the lowest positions of the upper straightening rollers are located below the highest positions of the lower straightening rollers. According to the technical scheme, the problems that in the prior art, the strip head of the strip needs to be manually assisted to enter the clamping and conveying mechanism, manual assistance is still needed when the strip head enters the rolling mill through the clamping and conveying mechanism, and the automatic strip threading requirement cannot be met are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of strip processing equipment, and specifically, to a plate and strip pinch roll straightening device for a rolling mill. Background Art

[0002] Due to the need for repeated rolling, the production efficiency of a reversible rolling mill is relatively low. After uncoiling, the plate and strip entering the front device of the mill has complex operations and takes a long time. Generally, a pinch roll mechanism is added to generate tension to assist the plate and strip to move forward. This device requires manual assistance for the leading end of the plate and strip to enter the pinch roll mechanism, and still requires manual assistance when entering the rolling mill through the pinch roll mechanism, which cannot meet the requirement of automatic threading. Content of the Utility Model

[0003] The utility model provides a plate and strip pinch roll straightening device for a rolling mill, which solves the problem in the related art that manual assistance is required for the leading end of the plate and strip to enter the pinch roll mechanism, and still requires manual assistance when entering the rolling mill through the pinch roll mechanism, and cannot meet the requirement of automatic threading.

[0004] The technical solution of the utility model is as follows: A plate and strip pinch roll straightening device for a rolling mill, which is characterized in that it includes:

[0005] A frame,

[0006] Pinch rolls, the pinch rolls are rotatably arranged on the frame, the number of the pinch rolls is two, and they are arranged along the up and down direction. A pinch cavity is formed between the two pinch rolls;

[0007] An inlet guide plate, the inlet guide plate is arranged on the frame and is located on the feeding side of the pinch rolls, and is used for guiding the plate and strip into the pinch cavity;

[0008] An upper straightening roll, the upper straightening roll is rotatably arranged on the frame and is located on the discharging side of the pinch rolls;

[0009] A lower straightening roll, the lower straightening roll is rotatably arranged on the frame and is located below the upper straightening roll. The number of the lower straightening rolls is two. The upper straightening roll is located between the two lower straightening rolls. A straightening cavity is formed between the upper straightening roll and the lower straightening roll close to the pinch rolls. A gap is left between the upper straightening roll and the other lower straightening roll, and the lowest point of the upper straightening roll is located below the highest point of the lower straightening roll.

[0010] It further includes a hydraulic shear, the hydraulic shear is arranged on the frame and is located on the side of the upper straightening roll away from the pinch rolls.

[0011] It further includes an outlet guide plate, the outlet guide plate is arranged on the frame and is located on the side of the upper straightening roll away from the pinch rolls, and is used for guiding the straightened plate and strip into the rolling mill.

[0012] The inlet end of the outlet guide plate is hinged to the frame, and further includes a first swing telescopic mechanism which is inclined. One end of the first swing telescopic mechanism is hinged to the outlet end of the outlet guide plate, and the other end of the first swing telescopic mechanism is hinged to the frame.

[0013] The outlet end of the inlet guide plate is hinged to the frame, and further includes a second swing telescopic mechanism which is inclined. One end of the second swing telescopic mechanism is hinged to the inlet end of the inlet guide plate, and the other end of the second swing telescopic mechanism is hinged to the frame.

[0014] Further included is a first guiding support plate which is arranged on the frame and located between the discharging side of the pinch cavity and the straightening cavity. The upper end surface of the first guiding support plate is below the highest position of the lower straightening roller.

[0015] Further included is a second guiding support plate which is arranged on the frame and located between the two lower straightening rollers. The upper end surface of the second guiding support plate is below the lowest position of the upper straightening roller.

[0016] Further included is

[0017] a third guiding support plate which is arranged on the frame and located on one side of the hydraulic shear close to the lower straightening roller;

[0018] a guiding pressing plate which is arranged on the frame and located above the third guiding support plate. One end of the guiding pressing plate close to the upper straightening roller is inclined upward.

[0019] Further included is a fourth guiding support plate which is arranged on the frame and located on one side of the hydraulic shear far from the lower straightening roller.

[0020] Further included is

[0021] a support frame which is arranged on the frame in a lifting manner. The upper straightening roller is rotatably connected to the support frame, and the upper straightening roller is rotatably arranged on the frame by means of the support frame;

[0022] a lifting driving mechanism. The upper end of the lifting driving mechanism is connected to the frame, and the lower end of the lifting driving mechanism is connected to the support frame.

[0023] The working principle and beneficial effects of the utility model are as follows: the pinch roller is rotatably arranged on the frame, the number of the pinch rollers is two, and they are arranged in the up-down direction, and a pinch cavity is formed between the two pinch rollers; the entrance guide plate is arranged on the frame and is located on the feeding side of the pinch rollers, and is used to guide the plate and strip into the pinch cavity; the upper straightening roller is rotatably arranged on the frame and is located on the discharging side of the pinch rollers; the lower straightening roller is rotatably arranged on the frame and is located below the upper straightening roller, the number of the lower straightening rollers is two, the upper straightening roller is located between the two lower straightening rollers, a straightening cavity is formed between the upper straightening roller and the lower straightening roller close to the pinch roller, a gap is left between the upper straightening roller and the other lower straightening roller, and the lowest point of the upper straightening roller is located below the highest point of the lower straightening roller. The guiding function of the entrance guide ensures that the strip automatically enters the pinching cavity between the two pinching rollers. The pinching rollers clamp the strip by rotating and provide tension to convey the strip in the set direction, so that the strip enters the straightening cavity between the upper straightening roller and the lower straightening roller. When the strip passes through the straightening cavity, it is squeezed by the upper straightening roller and the lower straightening roller, thereby eliminating warping and bending. After passing the lower straightening roller away from the pinching roller, the strip will be tilted upward, which is conducive to the strip automatically entering the rolling mill. There is no need for manual assistance for the end of the strip to enter the pinching cavity, and no manual assistance is required when the strip enters the rolling mill, which can meet the requirements of automatic strip threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0025] Figure 1 It is the front view of the utility model.

[0026] Figure 2 It is a top view of each roller and guide plate in the utility model.

[0027] Figure 3 It is a front view of each guide support plate in the utility model.

[0028] In the figure: 1. frame, 2. clamping roller, 3. entrance guide plate, 4. upper straightening roller, 5. lower straightening roller, 6. hydraulic shear, 7. exit guide plate, 8. first swing telescopic mechanism, 9. second swing telescopic mechanism, 10. first guide support plate, 11. second guide support plate, 12. third guide support plate, 13. guide pressure plate, 14. fourth guide support plate, 15. support frame, 16. lifting drive mechanism. DETAILED DESCRIPTION

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.

[0030] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0031] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0033] Embodiment, referring to Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present invention provides a strip pinch and straightening device for a rolling mill, which includes a frame 1, pinch rolls 2, an inlet guide plate 3, an upper straightening roll 4, a lower straightening roll 5. The pinch rolls 2 are rotatably arranged on the frame 1. The number of the pinch rolls 2 is two, and they are arranged in the up and down direction. The space between the two pinch rolls 2 is a pinch cavity; the inlet guide plate 3 is arranged on the frame 1 and is located on the feeding side of the pinch rolls 2 for guiding the strip into the pinch cavity; the upper straightening roll 4 is rotatably arranged on the frame 1 and is located on the discharging side of the pinch rolls 2; the lower straightening roll 5 is rotatably arranged on the frame 1 and is located below the upper straightening roll 4. The number of the lower straightening rolls 5 is two. The upper straightening roll 4 is located between the two lower straightening rolls 5. The space between the upper straightening roll 4 and the lower straightening roll 5 close to the pinch rolls 2 is a straightening cavity. There is a gap between the upper straightening roll 4 and the other lower straightening roll 5, and the lowest point of the upper straightening roll 4 is below the highest point of the lower straightening roll 5.

[0034] In this embodiment, the pinch roller 2, the upper straightening roller 4 and the lower straightening roller 5 are all mounted on the frame 1 through bearings, and can rotate freely or be driven by a motor, which can reduce wear and extend the service life of the pinch roller 2, the upper straightening roller 4 and the lower straightening roller 5. Through the cooperation of the pinch roller 2, the upper straightening roller 4 and the lower straightening roller 5, the flatness of the plate strip during the conveying and straightening process can be ensured. The motor provides transmission power to the upper straightening roller 4 and the lower straightening roller 5 through the transmission mechanism. The transmission mechanism is equipped with an overrunning clutch to avoid damage to the motor in the event of an accident, which is safer. The entire device has a compact structure and occupies a small space, and is suitable for installation and use in a limited space. The upper and lower positions of the pinch roller 2 can be adjusted to meet the use requirements of plates and strips of different specifications.

[0035] The guiding function of the entrance guide plate 3 ensures that the strip automatically enters the pinching cavity between the two pinching rollers 2. The pinching rollers 2 clamp the strip by rotating and provide tension to convey the strip in the set direction, so that the strip enters the straightening cavity between the upper straightening roller 4 and the lower straightening roller 5. When the strip passes through the straightening cavity, it is squeezed by the upper straightening roller 4 and the lower straightening roller 5, thereby eliminating warping and bending. After passing the lower straightening roller 5 away from the pinching roller 2, the strip will be tilted upward, which is conducive to the automatic entry of the strip into the rolling mill. There is no need for manual assistance for the end of the strip to enter the pinching cavity, and no manual assistance is required when the strip enters the rolling mill, which can meet the requirements of automatic strip threading.

[0036] Furthermore, if Figure 1 and Figure 3 As shown, a hydraulic shear 6 is also included, which is arranged on the frame 1 and located on the side of the upper straightening roller 4 away from the pinch roller 2. When a defect occurs on the plate strip, when the defective section passes, the hydraulic cylinder of the hydraulic shear 6 lifts up the shear blade to cut the plate strip, so as to remove the defective section. Timely removal of the defective section can ensure the quality of the plate to be processed subsequently, reduce the scrap rate, and improve the yield rate.

[0037] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, the machine frame 1 further includes an exit guide plate 7, which is arranged on the frame 1 and located on the side of the upper straightening roller 4 away from the pinch roller 2, and is used to feed the straightened strip into the rolling mill. The guiding effect of the exit guide plate 7 can ensure that the straightened strip can be smoothly transferred to the rolling mill, and prevent the strip from deflecting or piling up at the exit.

[0038] Furthermore, if Figure 1As shown, the inlet end of the outlet guide plate 7 is hinged to the frame 1. It further includes a first swing telescopic mechanism 8 which is inclined. One end of the first swing telescopic mechanism 8 is hinged to the outlet end of the outlet guide plate 7, and the other end is hinged to the frame 1. The right end of the outlet guide plate 7 is hinged to the frame 1. By the telescoping of the first swing telescopic mechanism 8, the up-and-down position of the left end of the outlet guide plate 7 can be adjusted, thereby adjusting the angle between the outlet guide plate 7 and the horizontal plane to ensure that the strip can smoothly enter the rolling mill and can meet the usage requirements of strips of different specifications.

[0039] Furthermore, as Figure 1 and Figure 3 shown, the outlet end of the inlet guide plate 3 is hinged to the frame 1. It further includes a second swing telescopic mechanism 9 which is inclined. One end of the second swing telescopic mechanism 9 is hinged to the inlet end of the inlet guide plate 3, and the other end is hinged to the frame 1. The left end of the inlet guide plate 3 is hinged to the frame 1. By the telescoping of the second swing telescopic mechanism 9, the up-and-down position of the right end of the inlet guide plate 3 can be adjusted, thereby adjusting the angle between the inlet guide plate 3 and the horizontal plane to ensure that the strip can smoothly enter the feeding cavity between the two pinch rolls 2 and can meet the usage requirements of strips of different specifications.

[0040] Furthermore, as Figure 1 and Figure 3 shown, it further includes a first guiding support plate 10 which is arranged on the frame 1 and is located between the discharging side of the feeding cavity and the straightening cavity. The upper end surface of the first guiding support plate 10 is below the highest position of the lower straightening roll 5. The first guiding support plate 10 can guide the strip to smoothly transition to the straightening cavity and prevent the strip from shifting or jumping when entering the straightening cavity.

[0041] Furthermore, as Figure 1 and Figure 3 shown, it further includes a second guiding support plate 11 which is arranged on the frame 1 and is located between the two lower straightening rolls 5. The upper end surface of the second guiding support plate 11 is below the lowest position of the upper straightening roll 4. The second guiding support plate 11 is used to support the strip to ensure that the strip is in the correct trajectory during the straightening process and prevent the strip from warping or jumping during the straightening process, which can improve the straightening effect.

[0042] Furthermore, as Figure 1 and Figure 3As shown in the figure, it further includes a third guiding support plate 12 and a guiding pressing plate 13. The third guiding support plate 12 is arranged on the frame 1 and is located on the side of the hydraulic shear 6 close to the lower straightening roller 5; the guiding pressing plate 13 is arranged on the frame 1 and is located above the third guiding support plate 12. One end of the guiding pressing plate 13 close to the upper straightening roller 4 is inclined upward. It guides the strip through the hydraulic shear 6 and ensures that the strip remains stable during the shearing process, preventing the strip from shifting or jittering during shearing, and can improve the shearing accuracy and strip quality.

[0043] Furthermore, as Figure 1 and Figure 3 shown in the figure, it further includes a fourth guiding support plate 14. The fourth guiding support plate 14 is arranged on the frame 1 and is located on the side of the hydraulic shear 6 far from the lower straightening roller 5. The fourth guiding support plate 14 is used to support the strip, ensuring that the strip can smoothly transition to the next process, preventing the strip from shifting or piling up after shearing, and ensuring the smooth passage of the strip.

[0044] Furthermore, as Figure 1 and Figure 3 shown in the figure, it further includes a support frame 15 and a lifting drive mechanism 16. The support frame 15 is arranged on the frame 1 in a lifting manner. The upper straightening roller 4 is rotatably connected to the support frame 15, and the upper straightening roller 4 is rotatably arranged on the frame 1 by means of the support frame 15; the upper end of the lifting drive mechanism 16 is connected to the frame 1, and the lower end of the lifting drive mechanism 16 is connected to the support frame 15. By the expansion and contraction of the lifting drive mechanism 16, the vertical position of the upper straightening roller 4 can be adjusted, thereby changing the distance between the upper straightening roller 4 and the lower straightening roller 5, ensuring the straightening effect and meeting the straightening requirements of strips with different thicknesses.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A plate and strip pinch straightening device for a rolling mill, characterized in that: including, a frame (1), pinch rolls (2), the pinch rolls (2) are rotatably arranged on the frame (1), the number of the pinch rolls (2) is two, and they are arranged in the up-down direction. A pinch cavity is formed between the two pinch rolls (2); an inlet guide plate (3), the inlet guide plate (3) is arranged on the frame (1) and is located on the feeding side of the pinch rolls (2) for guiding a strip into the pinch cavity; an upper leveling roll (4), the upper leveling roll (4) is rotatably arranged on the frame (1) and is located on the discharging side of the pinch rolls (2); lower leveling rolls (5), the lower leveling rolls (5) are rotatably arranged on the frame (1) and are located below the upper leveling roll (4). The number of the lower leveling rolls (5) is two. The upper leveling roll (4) is located between the two lower leveling rolls (5). A leveling cavity is formed between the upper leveling roll (4) and the lower leveling roll (5) close to the pinch rolls (2). A gap is left between the upper leveling roll (4) and the other lower leveling roll (5), and the lowest point of the upper leveling roll (4) is located below the highest point of the lower leveling roll (5).

2. The strip pinch straightening device for a rolling mill according to claim 1, wherein: It further includes a hydraulic shear (6), the hydraulic shear (6) is arranged on the frame (1) and is located on the side of the upper leveling roll (4) away from the pinch rolls (2).

3. A strip pinch straightening device for a rolling mill according to claim 1, characterized in that: It further includes an outlet guide plate (7), the outlet guide plate (7) is arranged on the frame (1) and is located on the side of the upper leveling roll (4) away from the pinch rolls (2) for feeding the leveled strip into a rolling mill.

4. A strip pinch straightening device for a rolling mill according to claim 3, characterized in that: The inlet end of the outlet guide plate (7) is hinged to the frame (1). It further includes a first swing telescopic mechanism (8). The first swing telescopic mechanism (8) is inclined. One end of the first swing telescopic mechanism (8) is hinged to the outlet end of the outlet guide plate (7), and the other end of the first swing telescopic mechanism (8) is hinged to the frame (1).

5. The plate and strip pinch and straightening device for a rolling mill according to claim 1, characterized in that: The outlet end of the inlet guide plate (3) is hinged to the frame (1). It further includes a second swing telescopic mechanism (9). The second swing telescopic mechanism (9) is inclined. One end of the second swing telescopic mechanism (9) is hinged to the inlet end of the inlet guide plate (3), and the other end of the second swing telescopic mechanism (9) is hinged to the frame (1).

6. The strip pinch-straightening device for a rolling mill according to claim 1, characterized in that: It further includes a first guiding support plate (10), the first guiding support plate (10) is arranged on the frame (1) and is located between the discharging side of the pinch cavity and the leveling cavity. The upper end surface of the first guiding support plate (10) is located below the highest point of the lower leveling roll (5).

7. The plate and strip pinch and straightening device for a rolling mill according to claim 1, characterized in that: It further includes a second guiding support plate (11), the second guiding support plate (11) is arranged on the frame (1) and is located between the two lower leveling rolls (5). The upper end surface of the second guiding support plate (11) is located below the lowest point of the upper leveling roll (4).

8. A strip pinch straightening device for a rolling mill according to claim 2, characterized in that: It further includes, a third guiding support plate (12), the third guiding support plate (12) is arranged on the frame (1) and is located on the side of the hydraulic shear (6) close to the lower leveling roll (5); The guiding pressing plate (13), the guiding pressing plate (13) is arranged on the frame (1) and is located above the third guiding support plate (12), and one end of the guiding pressing plate (13) close to the upper straightening roller (4) is inclined upward.

9. The plate and strip pinch straightening device for a rolling mill according to claim 2, characterized in that: It further includes a fourth guiding support plate (14), the fourth guiding support plate (14) is arranged on the frame (1) and is located on the side of the hydraulic shear (6) away from the lower straightening roller (5).

10. A strip pinch straightening device for a rolling mill according to claim 1, characterized in that: It further includes, A support frame (15), the support frame (15) is arranged on the frame (1) in a lifting manner, the upper straightening roller (4) is rotationally connected to the support frame (15), and the upper straightening roller (4) is rotationally arranged on the frame (1) by means of the support frame (15); A lifting drive mechanism (16), the upper end of the lifting drive mechanism (16) is connected to the frame (1), and the lower end of the lifting drive mechanism (16) is connected to the support frame (15).

Images