Balancing weight type bouncing roller tension adjusting device

Abstract

The utility model provides a balancing weight type bouncing roller tension adjusting device which comprises a machine frame, a first steering roller, a second steering roller, a bouncing roller, a bouncing roller support and a balancing weight mechanism, the first steering roller and the second steering roller are erected on the machine frame in parallel at the same height, and the bouncing 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 the rotating shaft, the bouncing roller and the balance weight mechanism are located on the two sides of the rotating shaft respectively, the bouncing roller is connected to the end, close to the steering roller, of the bouncing roller support, and the balance weight mechanism is slidably connected to the bouncing roller support. By adjusting the distance between the counterweight mechanism and the bouncing roller bracket, the moment of force of the counterweight mechanism to the bouncing roller bracket is changed, so that the bouncing roller moves under the acting force of the tension of the plate strip and the counterweight mechanism, the fluctuation of the system tension is compensated and adjusted, and the stability and control of the tension of the plate strip are realized; therefore, the phenomena of strip breakage, plate strip wrinkles and the like in the furnace are effectively avoided, and the rejection rate is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold-rolled strip steel processing, and in particular relates to a counterweight block type bouncing roller tension regulating device. Background Art

[0002] In the continuous strip processing line, the tension of the strip will have a direct impact on the strip shape, strip breakage rate, etc., especially in the extremely thin strip processing line with a thickness of less than 0.1mm. The fluctuation of tension can easily lead to strip breakage in the furnace, strip wrinkles, etc., resulting in an increase in the scrap rate and even the shutdown of the production line. Therefore, it is necessary to control the tension of the strip with high precision. Conventional technology generally controls the tension of the strip through the motor of the tension roller. However, the accuracy of the existing motor control can no longer meet the existing strip tension control accuracy requirements. Utility Model Content

[0003] The utility model aims to provide a counterweight block type bouncing roller tension regulating device, which can at least solve some defects existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A counterweight-type bouncing roller tension adjustment device comprises a frame, a first steering roller, a second steering roller, a bouncing roller, a bouncing roller bracket and a counterweight mechanism, 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 counterweight mechanism 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 counterweight mechanism is slidably connected to one end of the bouncing roller bracket away from the first steering roller along the extension direction of the bouncing roller bracket.

[0006] Furthermore, the counterweight mechanism includes a counterweight block, a counterweight block bracket and an electric push rod, the counterweight block is fixedly mounted on the counterweight block bracket, the counterweight block bracket is slidably connected to the bouncing roller bracket along the extension direction of the bouncing roller bracket, the movable end of the electric push rod is connected to the counterweight block bracket, and the other end of the electric push rod is connected to the bouncing roller bracket.

[0007] Furthermore, the electric push rod is connected to the middle position of the counterweight bracket, and there are two counterweights, which are symmetrically arranged on both sides of the electric push rod.

[0008] Furthermore, a limit block is provided in the area between the counterweight bracket and the bouncing roller bracket on both sides of the electric push rod.

[0009] Furthermore, the bouncing roller is located directly below the middle position between the first steering roller and the second steering roller.

[0010] Furthermore, the bouncing roller bracket includes two connecting plates arranged relatively parallel to each other, the two ends of the rotating shaft respectively pass through the centers of the two connecting plates, and the bouncing roller and the counterweight mechanism are respectively connected to the two ends of the connecting plates.

[0011] Furthermore, 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.

[0012] Furthermore, the counterweight-type bouncing roller tension adjustment device further includes a tension meter for detecting the tension of the plate strip, and the tension meter is interlocked and controlled with the counterweight mechanism.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The counterweight block type bouncing roller tension adjustment device provided by the utility model adjusts the distance between the counterweight mechanism and the bouncing roller bracket, thereby changing the torque of the counterweight mechanism on the bouncing roller bracket, so that the bouncing roller moves under the action of the plate strip tension and the counterweight mechanism, and compensates and adjusts the system tension fluctuation, thereby achieving stabilization and control of the plate strip tension, thereby effectively avoiding the phenomenon of strip breakage and plate strip wrinkles in the furnace, and reducing the scrap rate.

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model counterweight block type bouncing roller tension adjustment device;

[0017] Figure 2 It is a schematic diagram of the balanced state of the counterweight block type bouncing roller tension adjustment device of the utility model.

[0018] Explanation of the reference numerals: 1. frame; 2. first steering roller; 3. second steering roller; 4. plate belt; 5. bouncing roller; 6. bouncing roller bracket; 7. rotating shaft; 8. slider; 9. slide groove; 10. counterweight bracket; 11. counterweight; 12. electric push rod; 13. limit block; 14. reinforcing steel plate; 15. connecting plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, 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, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0023] like Figure 1 and Figure 2As shown, this embodiment provides a counterweight type bouncing roller tension adjustment device, comprising a frame 1, a first steering roller 2, a second steering roller 3, a bouncing roller 5, a bouncing roller bracket 6 and a counterweight mechanism, wherein the first steering roller 2 and the second steering roller 3 are erected on the frame 1 in parallel at the same height, the bouncing roller bracket 6 is located below the first steering roller 2 and the second steering 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 steering roller 2 and the second steering roller 3, the bouncing roller 5 and the counterweight mechanism are respectively located on both sides of the rotating shaft 7, the bouncing roller 5 is connected to one end of the bouncing roller bracket 6 close to the first steering roller 2 and the second steering roller 3, and the bouncing roller 5 is arranged parallel to the rotating shaft 7, and the counterweight mechanism is slidably connected to one end of the bouncing roller bracket 6 away from the first steering roller 2 and the second steering roller 3 along the extension direction of the bouncing roller bracket 6.

[0024] Before operation, the mass of the counterweight mechanism required is calculated according to the mass of the bouncing roller 5, the bouncing roller bracket 6 and the tension range of the strip 4, so that the counterweight mechanism can generate a sufficient range of torque in the moving range along the extension direction of the bouncing roller bracket 6 to provide corresponding force for the strip 4. During operation, the strip 4 passes around the top of the first steering roller 2, the bottom of the bouncing roller 5 and the top of the second steering roller 3 in sequence, and the counterweight mechanism generates a torque, which is transmitted to the bouncing roller 5 through 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 strip 4 tension and the counterweight mechanism. Through the movement of the bouncing roller 5, the tension fluctuation of the strip 4 is compensated and adjusted, thereby achieving the stability and control of the tension of the strip 4, thereby effectively avoiding the phenomenon of strip breakage and strip wrinkles in the furnace, and reducing the scrap rate.

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

[0026] In an optional embodiment, the bouncing roller bracket 6 includes two connecting plates 15 arranged relatively parallel to each other, and both ends of the rotating shaft 7 respectively pass through the centers of the two connecting plates 15. Both ends of the bouncing roller 5 are rotatably connected to the ends of the two connecting plates 15 close to the steering roller through bearings, ensuring that the bouncing roller 5 can rotate freely, thereby reducing the friction resistance between the plate belt 4 and the bouncing roller 5 during operation. The end of the counterweight mechanism is slidably connected to the end of the connecting plate 15 away from the steering roller, and the counterweight mechanism slides along the extension direction of the connecting plate 15.

[0027] In some embodiments, the sliding connection between the counterweight mechanism and the connecting plate 15 can be that a slide groove 9 extending along the extension direction of the connecting plate 15 is opened on the connecting plate 15, and a slider 8 cooperating with the slide groove 9 is set at the end of the counterweight mechanism. The distance between the counterweight mechanism and the center of the bouncing roller bracket 6 is adjusted by sliding the slider 8 in the slide groove 9, thereby changing the torque of the counterweight mechanism on the bouncing roller bracket 6, and then the bouncing roller 5 can be rotated around the rotating shaft 7 of the bouncing roller bracket 6.

[0028] Furthermore, the bouncing roller bracket 6 also includes two reinforcing steel plates 14 connected between two connecting plates 15, and the two reinforcing steel plates 14 are symmetrically located on both sides of the rotating shaft 7. Through the arrangement of the reinforcing steel plates 14, on the one hand, the stability of the bouncing roller bracket 6 during rotation can be improved, and on the other hand, the installation of the counterweight mechanism is facilitated.

[0029] In an optional embodiment, the counterweight mechanism includes a counterweight 11, a counterweight bracket 10 and an electric push rod 12, wherein the counterweight 11 is fixedly mounted on the counterweight bracket 10, the counterweight 11 acts on the counterweight bracket 10 by its own gravity, the counterweight bracket 10 is slidably connected to the connecting plate 15 of the bouncing roller bracket 6 along the extension direction of the bouncing roller bracket 6, the movable end of the electric push rod 12 is connected to the counterweight bracket 10, and the other end of the electric push rod 12 is connected to the reinforcing steel plate 14 of the bouncing roller bracket 6. The length between the counterweight bracket 10 and the rotating shaft 7 of the bouncing roller bracket 6 is adjusted by the electric push rod 12, the arm length of the counterweight 11 is changed, and thus the torque of the counterweight 11 on the bouncing roller bracket 6 is changed. According to different tension requirements of the plate belt 4, different torques can be provided by adjusting the counterweight bracket 6.

[0030] Preferably, the electric push rod 12 is connected to the middle position of the counterweight bracket 10, and there are two counterweights 11, which are symmetrically arranged on both sides of the electric push rod 12, to ensure the stability of the counterweight bracket 10 during the torque adjustment process and further improve the accuracy of the tension control of the plate belt 4.

[0031] Furthermore, a limit block 13 for limiting the extreme position of the movement of the counterweight bracket 10 can be set on the reinforcing steel plate 14 of the bouncing roller bracket 6. In this embodiment, there are two limit blocks 13, which are symmetrically arranged on both sides of the electric push rod 12.

[0032] An optimized implementation method, the counterweight block type bouncing roller tension adjustment device of this embodiment also includes a tension meter (not shown in the figure) for detecting the tension of the plate strip 4, and the tension meter is interlocked with the counterweight mechanism. When working, the bouncing roller 5 moves under the action of the tension of the plate strip 4 and the counterweight mechanism, and the tension meter on the production line obtains the actual measured data of the tension of the plate strip 4, and adjusts the elongation length of the electric push rod 12 in the counterweight mechanism according to the measured data, so that the tension of the plate strip 4 is equal to the theoretical set tension, and records the position of the electric push rod 12 of the counterweight mechanism under different tension requirements of the plate strip 4. In subsequent use, the corresponding length of the electric push rod 12 can be directly set to obtain the corresponding tension of the plate strip 4.

[0033] In this embodiment, the rotational connections among the first steering roller 2, the second steering roller 3, the bouncing roller 5, the bouncing roller bracket 6, and the frame 1 are all connected by low-friction bearings to reduce the influence of system friction on the accuracy of strip tension control.

[0034] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A counterweight type bouncing roller tension adjustment device, characterized in that: The invention comprises a frame, a first steering roller, a second steering roller, a bouncing roller, a bouncing roller bracket and a counterweight mechanism, 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 counterweight mechanism 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 counterweight mechanism is slidably connected to one end of the bouncing roller bracket away from the first steering roller along the extension direction of the bouncing roller bracket.

2. The counterweight type bouncing roller tension adjustment device according to claim 1, characterized in that: The counterweight mechanism includes a counterweight block, a counterweight block bracket and an electric push rod, the counterweight block is fixedly mounted on the counterweight block bracket, the counterweight block bracket is slidably connected to the bouncing roller bracket along the extension direction of the bouncing roller bracket, the movable end of the electric push rod is connected to the counterweight block bracket, and the other end of the electric push rod is connected to the bouncing roller bracket.

3. The counterweight type bouncing roller tension adjustment device according to claim 2, characterized in that: The electric push rod is connected to the middle position of the counterweight bracket, and there are two counterweights, which are symmetrically arranged on both sides of the electric push rod.

4. The counterweight type bouncing roller tension adjustment device according to claim 2, characterized in that: Limit blocks are arranged in the area between the counterweight bracket and the bouncing roller bracket on both sides of the electric push rod.

5. The counterweight 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.

6. The counterweight type bouncing roller tension adjustment device according to claim 1, characterized in that: The bouncing roller bracket comprises two connecting plates 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 counterweight mechanism are respectively connected to the two ends of the connecting plates.

7. The counterweight type bouncing roller tension adjustment device according to claim 6, 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.

8. The counterweight type bouncing roller tension adjustment device according to claim 1, characterized in that: It also includes a tension meter for detecting the tension of the plate strip, and the tension meter is interlocked and controlled with the counterweight mechanism.

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