Rotary similar bounce roller tension adjusting device

Abstract

A rotary similar type bounce roller tension adjusting device comprises a rack, a first steering roller, a second steering roller, a bounce roller, a bounce roller support and an air cylinder assembly, the first steering roller and the second steering roller are erected on the rack in parallel at the same height, and the bounce roller support is located below the first steering roller and the second steering roller; the bouncing roller support is rotationally connected to the rack through a rotating shaft, the rotating shaft is parallel to the first steering roller and the second steering roller, the bouncing roller is connected to the end, close to the first steering roller, of the bouncing roller support and is parallel to the rotating shaft, and the air cylinder assembly is connected to the end, away from the first steering roller, of the bouncing roller support. According to the utility model, the bouncing roller is designed to apply constant force to the plate strip, so that the bouncing roller moves under the action force of the tension of the plate strip and the air cylinder assembly, and the tension fluctuation of a system is compensated and adjusted, thereby realizing the stability and control of the tension of the plate strip, further effectively avoiding the phenomena of strip breakage in a furnace, plate strip wrinkles and the like, and reducing the rejection rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold-rolled strip processing, and particularly relates to a rotary similar type bounce roll tension adjusting device. Background Art

[0002] In a strip continuous processing line, the tension of the strip will directly affect the strip shape, breakage rate, etc. Especially in the processing line of ultra-thin strip with a thickness below 0.1 mm, the fluctuation of the tension is extremely likely to cause phenomena such as in-furnace breakage and strip wrinkles, resulting in an increase in the rejection rate and even the shutdown of the production line. Therefore, it is necessary to control the tension of the strip with high precision. The conventional technology generally controls the strip tension through the motor of the tension roll. However, the accuracy of the existing motor control can no longer meet the requirements of the current strip tension control accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a rotary similar type bounce roll tension adjusting device, which can at least solve some defects existing in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A rotary similar type bounce roll tension adjusting device includes a frame, a first turning roll, a second turning roll, a bounce roll, a bounce roll bracket and a cylinder assembly. The first turning roll and the second turning roll are arranged in parallel at the same height on the frame. The bounce roll bracket is located below the first turning roll and the second turning roll. The bounce roll bracket is rotationally connected to the frame through a rotating shaft, and the rotating shaft is arranged parallel to the first turning roll and the second turning roll. The bounce roll and the cylinder assembly are respectively located on both sides of the rotating shaft. The bounce roll is connected to the bounce roll bracket at one end close to the first turning roll, and the bounce roll is arranged parallel to the rotating shaft. The cylinder assembly is connected to the bounce roll bracket at one end far from the first turning roll.

[0006] Further, the bounce roll is directly below the middle position between the first turning roll and the second turning roll.

[0007] Further, the vertical distance h between the bounce roll and the first turning roll / second turning roll, the distance L1 between the bounce roll and the rotation center of the bounce roll bracket, the length L2 of the cylinder assembly, and the distance L3 between the rotation center of the bounce roll bracket and the joint bearing of the cylinder assembly satisfy the relational expression h / L1 = L2 / L3.

[0008] Further, the bounce roll bracket includes two relatively parallel connecting plates. The two ends of the rotating shaft respectively penetrate the centers of the two connecting plates. The bounce roll and the cylinder assembly are respectively connected to the two ends of the connecting plates.

[0009] Furthermore, the bouncing roller bracket further includes two reinforcing steel plates connected between the two connecting plates, and the two reinforcing steel plates are symmetrically located on both sides of the rotating shaft.

[0010] Furthermore, the cylinder assembly includes a low-speed cylinder and a connecting rod. The connecting rod is fixedly connected to the bouncing roller bracket, and the connecting rod is arranged parallel to the rotating shaft. One end of the low-speed cylinder is connected to the connecting rod, and the other end of the low-speed cylinder is hinged to the frame.

[0011] Furthermore, the low-speed cylinder is connected to the central position of the connecting rod.

[0012] Furthermore, the above-mentioned rotating similar-type bouncing roller tension adjusting device further includes a tensiometer for detecting the tension of the strip, and the tensiometer is interlocked and controlled with the cylinder assembly.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) The rotating similar-type bouncing roller tension adjusting device provided by the present utility model applies a constant force to the strip by designing the bouncing roller, so that the bouncing roller moves under the action of the strip tension and the cylinder assembly, compensates and adjusts the system tension fluctuation, thereby realizing the stabilization and control of the strip tension, and further effectively avoiding phenomena such as strip breakage in the furnace and strip wrinkles, and reducing the rejection rate.

[0015] (2) The rotating similar-type bouncing roller tension adjusting device provided by the present utility model designs the size of the bouncing roller tension adjusting device to meet the structural characteristics of the rotating similarity type, so that the torque relationship during the rotation of the bouncing roller bracket does not change, avoiding the influence of the force arm length on the acting force of the bouncing roller on the strip, and further improving the strip tension control accuracy.

[0016] The following will further elaborate on the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the rotating similar-type bouncing roller tension adjusting device of the present utility model;

[0018] Figure 2 is a simplified diagram of the balance state of the rotating similar-type bouncing roller tension adjusting device of the present utility model.

[0019] Description of the reference numerals: 1, frame; 2, first turning roller; 3, second turning roller; 4, strip; 5, bouncing roller; 6, bouncing roller bracket; 7, rotating shaft; 8, connecting rod; 9, low-speed cylinder; 10, reinforcing steel plate; 11, connecting plate. Detailed Embodiments

[0020] 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0024] Such as Figure 1 and Figure 2As shown in the figure, this embodiment provides a rotary similar type bouncing roller tension adjusting device, which includes a frame 1, a first turning roller 2, a second turning roller 3, a bouncing roller 5, a bouncing roller bracket 6 and a cylinder assembly. The first turning roller 2 and the second turning roller 3 are arranged in parallel at the same height on the frame 1. The bouncing roller bracket 6 is located below the first turning roller 2 and the second turning roller 3. The bouncing roller bracket 6 is rotatably connected to the frame 1 through a rotating shaft 7, and the rotating shaft 7 is arranged parallel to the first turning roller 2 and the second turning roller 3. The bouncing roller 5 and the cylinder assembly are respectively located on both sides of the rotating shaft 7. The bouncing roller 5 is connected to the bouncing roller bracket 6 at one end close to the first turning roller 2, and the bouncing roller 5 is arranged parallel to the rotating shaft 7. The cylinder assembly is connected to the bouncing roller bracket 6 at one end far from the first turning roller 2. During operation, the strip 4 sequentially bypasses the top of the first turning roller 2, the bottom of the bouncing roller 5 and the top of the second turning roller 3. The cylinder assembly provides a stable output force, and transmits the output force of the cylinder assembly to the bouncing roller 5 through the bouncing roller bracket 6, so that the bouncing roller 5 rotates around the fulcrum O of the bouncing roller bracket 6. At the same time, since the strip 4 wraps around the bouncing roller 5, the bouncing roller 5 can move up and down under the action of the tension of the strip 4 and the constant force transmitted by the cylinder assembly. Through the movement of the bouncing roller 5, the compensation and adjustment of the tension fluctuation of the strip 4 are realized, so as to realize the stability and control of the tension of the strip 4, and further effectively avoid phenomena such as strip breakage in the furnace and strip wrinkles, and reduce the rejection rate.

[0025] Preferably, the bouncing roller 5 is directly below the middle position between the first turning roller 2 and the second turning roller 3; further, the distance between the first turning roller 2 and the second turning roller 3 can be designed to be equal to the diameter of the bouncing roller 5, so that the strip 4 is in a vertical state between the bouncing roller 5 and the first turning roller 2 and the second turning roller 3, which is beneficial to the precise control of the tension of the strip 4.

[0026] To avoid the influence of the change of the force arm length of the tension of the strip 4 and the force arm length of the acting force of the cylinder assembly on the acting force of the bouncing roller 5 on the strip 4, preferably, this embodiment designs the bouncing roller tension adjusting device as a rotary similar type structure. Specifically, as Figure 2 shown, when the bouncing roller tension adjusting device is in a balanced state, the vertical distance h between the bouncing roller 5 and the first turning roller / second turning roller, the distance L1 between the bouncing roller 5 and the rotation center of the bouncing roller bracket 6, the length L2 of the cylinder assembly, and the distance L3 between the rotation center of the bouncing roller bracket 6 and the joint bearing of the cylinder assembly satisfy the relational expression h / L1 = L2 / L3; through this design of the dimensions of the bouncing roller tension adjusting device to make it meet the structural characteristics of the rotary similar type, the torque relationship during the rotation of the bouncing roller bracket 6 can be made unchanged, avoiding the influence of the force arm length on the acting force of the bouncing roller 5 on the strip 4, and further improving the control accuracy of the tension of the strip 4.

[0027] Optional implementation mode, such as Figure 1 As shown, the bouncing roller bracket 6 includes two connecting plates 11 arranged relatively parallel to each other. Both ends of the rotating shaft 7 penetrate through the centers of the two connecting plates 11 respectively. Both ends of the bouncing roller 5 are rotatably connected to one end of the two connecting plates 11 close to the turning roller through bearings, ensuring that the bouncing roller 5 can rotate freely, thereby reducing the frictional resistance between the strip 4 and the bouncing roller 5 during the working process. The cylinder assembly is connected to one end of the connecting plate 11 away from the turning roller.

[0028] Furthermore, the bouncing roller bracket 6 further includes two reinforcing steel plates 10 connected between the two connecting plates 11. The two reinforcing steel plates 10 are symmetrically located on both sides of the rotating shaft 7. By providing the reinforcing steel plates 10, the stability of the bouncing roller bracket 6 during rotation is improved.

[0029] Optional implementation mode, the cylinder assembly includes a low-speed cylinder 9 and a connecting rod 8. Both ends of the connecting rod 8 are fixedly connected to one end of the two connecting plates 11 of the bouncing roller bracket 6 away from the turning roller, and the connecting rod 8 is arranged parallel to the rotating shaft 7. One end of the low-speed cylinder 9 is connected to the connecting rod 8, and the other end of the low-speed cylinder 9 is hinged to the frame 1. Preferably, the low-speed cylinder 9 is connected to the center position of the connecting rod 8 to ensure uniform force on the bouncing roller bracket 6, thereby ensuring the stability of the rotation of the bouncing roller bracket 6.

[0030] Optimized implementation mode, the rotation similarity type bouncing roller tension adjusting device of this embodiment further includes a tensiometer (not shown in the figure) for detecting the strip tension. The tensiometer is interlocked with the cylinder assembly. During operation, the bouncing roller 5 moves under the action of the strip tension and the low-speed cylinder 9. The actual measured data of the strip tension is obtained by the tensiometer on the production line, and the air pressure value of the low-speed cylinder 9 is adjusted according to the actual measured data, so that the low-speed cylinder 9 generates a suitable acting force in real time, further ensuring the precise control of the stability of the strip 4 tension.

[0031] In this embodiment, the rotational connections between the first turning roller, the second turning roller, the bouncing roller, the bouncing roller bracket, the cylinder assembly, and the frame are all connected by low-friction bearings to reduce the influence of system friction on the control accuracy of the strip tension.

[0032] The above examples are only illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design identical or similar to the present invention falls within the protection scope of the present invention.

Claims

1. A rotating similarity type bouncing roller tension adjustment device, characterized in that: It comprises a frame, a first steering roller, a second steering roller, a bouncing roller, a bouncing roller bracket and a cylinder assembly, wherein the first steering roller and the second steering roller are erected on the frame in parallel at the same height, the bouncing roller bracket is located below the first steering roller and the second steering roller, the bouncing roller bracket is rotatably connected to the frame via a rotating shaft, and the rotating shaft is arranged parallel to the first steering roller and the second steering roller, the bouncing roller and the cylinder assembly are respectively located on both sides of the rotating shaft, the bouncing roller is connected to one end of the bouncing roller bracket close to the first steering roller, and the bouncing roller is arranged parallel to the rotating shaft, and the cylinder assembly is connected to one end of the bouncing roller bracket away from the first steering roller; It also includes a tension meter for detecting the tension of the plate strip, and the tension meter is interlocked and controlled with the cylinder assembly.

2. The rotary similarity type bouncing roller tension adjustment device according to claim 1, characterized in that: The bouncing roller is located directly below the middle position between the first steering roller and the second steering roller.

3. The rotary similarity type bouncing roller tension adjustment device according to claim 1, characterized in that: The vertical distance h between the bouncing roller and the first steering roller / the second steering roller, the distance L1 between the bouncing roller and the rotation center of the bouncing roller bracket, the length L2 of the cylinder assembly, and the distance L3 between the rotation center of the bouncing roller bracket and the joint bearing of the cylinder assembly satisfy the relationship h / L1=L2 / L3.

4. The rotary similarity type bouncing roller tension adjustment device according to claim 1, characterized in that: The bouncing roller bracket comprises two connecting plates which are arranged relatively in parallel, the two ends of the rotating shaft respectively pass through the centers of the two connecting plates, and the bouncing roller and the cylinder assembly are respectively connected to the two ends of the connecting plates.

5. The rotary similarity type bouncing roller tension adjustment device according to claim 4, characterized in that: The bouncing roller bracket also includes two reinforcing steel plates connected between the two connecting plates, and the two reinforcing steel plates are symmetrically located on both sides of the rotating shaft.

6. The rotary similarity type bouncing roller tension adjustment device according to claim 1, characterized in that: The cylinder assembly includes a low-speed cylinder and a connecting rod, wherein the connecting rod is fixedly connected to the bouncing roller bracket and arranged parallel to the rotating shaft, one end of the low-speed cylinder is connected to the connecting rod, and the other end of the low-speed cylinder is hinged to the frame.

7. The rotary similarity type bouncing roller tension adjustment device according to claim 6, characterized in that: The low-speed cylinder is connected to the center position of the connecting rod.

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