Bouncing roller

Abstract

The utility model belongs to the technical field of tension adjustment, and provides a bouncing roller which comprises a fixing frame, a tension detecting mechanism and a tension adjusting mechanism, the tension detection mechanism comprises a detection roller and a tension sensor, the detection roller is rotationally arranged on the fixing frame, the detection roller and the steering roller are oppositely arranged, and the tension sensor is connected with the detection roller; the tension adjusting mechanism comprises a floating frame pivoted with the fixed frame and a floating roller rotationally arranged on the floating frame, the floating roller is located between the detection roller and the steering roller, a movable weight and a fixed weight are arranged on the two sides of the floating roller respectively, the fixed weight is fixedly arranged at one end of the floating frame, and the movable weight is arranged at the other end of the floating frame in a sliding mode. The floating frame is further provided with a weight driving piece used for driving the movable weight to be close to or away from the floating roller, and the weight driving piece is in signal connection with the tension sensor. The bouncing roller can automatically adjust the tensile force in real time, and is simple in structure and high in control precision.

Description

Technical Field

[0001] The utility model relates to the technical field of tension adjustment, in particular to a bouncing roller. Background Art

[0002] After annealing or cleaning, the strip will produce tension fluctuations. In order to obtain metal strips with stable quality, the metal strips must have stable tension. Therefore, a bouncing roller is often installed at the output end of the annealing production line or the cleaning line to adjust the tension of the metal strip.

[0003] Early jumping rollers adjusted the steel belt tension by hanging a counterweight block that could increase or decrease weight on the bouncing roller. Although this structure is simple, it is inconvenient to operate. In addition, due to the limited specifications and types of the counterweight block, the range of force that the jumping roller can apply to the steel belt is discontinuous, and sometimes it is difficult to ensure that the weight of the counterweight block is just right, resulting in the jumping roller being difficult to adapt to the tension control required for steel belts of different thicknesses, widths, and performances. The tension control accuracy is not high, and this type of jumping roller is cumbersome to operate, inefficient, and inflexible, and requires a high level of operator experience and operating skills.

[0004] The later jumping roller uses the piston rod of the cylinder or hydraulic cylinder to act as a counterweight on the force of the bouncing roller. The main method is to install the axle of the bouncing roller on the piston rod of a cylinder or hydraulic cylinder, and push the bouncing roller up and down by the piston rod to change the tension of the metal strip. When adjusting the counterweight of this jumping roller, it is necessary to adjust the pressure reducing valve on the pneumatic triplet. Each change of the tension setting value in the furnace requires on-site operation, which is not only time-consuming but also difficult to ensure the adjustment accuracy.

[0005] The technical problem to be solved by the present application is: how to solve the problems of low control precision, complicated adjustment and complex structure of the existing bouncing roller. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model aims to provide a bouncing roller, which has the characteristics of simple structure, convenient adjustment and high control accuracy.

[0007] The technical solution adopted by the utility model is: a bouncing roller, including a fixed frame, a steering roller is rotatably arranged on the fixed frame, and also includes a tension detection mechanism and a tension adjustment mechanism installed on the fixed frame;

[0008] The tension detection mechanism includes a detection roller and a tension sensor. The detection roller is rotatably arranged on a fixed frame, and the detection roller and the steering roller are arranged opposite to each other. The tension sensor is connected to the detection roller.

[0009] The tension adjustment mechanism includes a floating frame pivotally connected to a fixed frame and a floating roller rotatably arranged on the floating frame, the floating roller being located between a detection roller and a steering roller, movable weights and fixed weights being arranged on both sides of the floating roller, the fixed weight being fixedly arranged at one end of the floating frame, and the movable weight being slidably arranged at the other end of the floating frame, and a weight driving component for driving the movable weight to approach or move away from the floating roller being also installed on the floating frame, and the weight driving component is connected to the tension sensor signal.

[0010] The bouncing roller of the present application is a metal strip that is sequentially wound around a steering roller, a floating roller and a detection roller. When the tension sensor detects that the tension applied to the detection roller is different from the preset tension, a signal is transmitted to the weight driver. The weight driver then drives the movable weight to approach or move away from the floating roller according to the signal. According to the lever principle, the movable weight in different positions will cause the floating roller to be at different heights, thereby changing the pressure applied by the floating roller to the metal strip, so that the final tension of the metal strip matches the preset tension, thereby achieving real-time automatic adjustment of the tension. The structure is simple and the control accuracy is high.

[0011] In some embodiments, the tension detection mechanism also includes an articulated seat and a rocker arm, the articulated seat is installed on a fixed frame, one end of the rocker arm is hinged to the articulated seat, and the other end is limitedly connected to the detection roller, the tension sensor is arranged at the bottom of the rocker arm, and the trigger part of the tension sensor is abutted against the rocker arm.

[0012] By adopting the above technical solution, the pressure applied by the metal strip to the detection roller will drive the pendulum to swing. The tension sensor detects the pressure value of the detection roller according to the swing amplitude of the pendulum, and can accurately detect the real-time pressure on the detection roller.

[0013] In some embodiments, a guide member that slidably cooperates with the movable weight is disposed on the floating frame, and the guide member is a guide rod or a guide rail.

[0014] By adopting the above technical solution, the guide member can limit the movement trajectory of the movable weight, making the movement of the movable weight more precise.

[0015] In some embodiments, the weight driving member is a servo motor, the output end of the weight driving member is connected to a ball screw, and a ball nut that cooperates with the ball screw is installed on the movable weight.

[0016] By adopting the above technical solution, the servo motor, ball screw and ball nut can realize precise control of the position of the movable weight and improve the accuracy of tensioning force adjustment.

[0017] In some embodiments, a rotating shaft is disposed on the floating frame, and a rotating seat rotatably matched with the rotating shaft is disposed on the fixed frame.

[0018] By adopting the above technical solution, the cooperation between the rotating shaft and the rotating seat can reduce the resistance when the floating frame swings around the fixed frame, and at the same time can fix the rotating fulcrum to reduce the error of tension adjustment.

[0019] In some embodiments, a dancing roller is disposed between the rotating shaft and the fixed weight.

[0020] By adopting the above technical solution, when the weight driving member drives the movable weight to move toward the floating roller, the floating roller will drop, thereby increasing the tension of the metal strip; when the weight driving member drives the movable weight to move away from the floating roller, the floating roller will rise, thereby reducing the tension of the metal strip.

[0021] In some embodiments, the fixed weight includes a first mounting rod and a plurality of first counterweight blocks inserted through the first mounting rod, one end of the first mounting rod is connected to the floating frame, and the other end is connected to a first anti-dropping member, which is used to prevent the first counterweight block from falling off the first mounting rod.

[0022] By adopting the above technical solution, the number of first counterweight blocks can be increased or decreased according to actual needs, so that the weight of the fixed weight matches the adjusted metal strip, thereby improving the accuracy of tension adjustment.

[0023] In some embodiments, the movable weight includes a sliding block slidably connected to the floating frame, a second mounting rod connected to the sliding block, and a plurality of second counterweight blocks inserted through the second mounting rod, and a second anti-dropping member is connected to one end of the second mounting rod away from the sliding block, and the second anti-dropping member is used to prevent the second counterweight block from falling off the second mounting rod.

[0024] By adopting the above technical solution, the number of the second counterweight blocks can be increased or decreased according to actual conditions, so that the weight of the movable weight matches the adjusted metal strip, making the tension adjustment more precise.

[0025] In some embodiments, the tension adjustment mechanism further includes a safety pin, a first connecting ear is provided on the fixed frame, a second connecting ear is provided on the floating frame, and the safety pin passes through the first connecting ear and the second connecting ear to limit relative rotation between the floating frame and the fixed frame.

[0026] By adopting the above technical solution, when winding the metal strip or stopping the machine for maintenance, the safety pin is passed through the first connecting ear and the second connecting ear to prevent the floating frame from rotating, thereby improving safety.

[0027] In some embodiments, a pin seat for placing a safety pin is provided on the fixing frame.

[0028] By adopting the above technical solution, the latch seat can easily store the safety pin and can also conveniently take out the safety pin when needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a bouncing roller of a preferred embodiment of the utility model;

[0030] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the bouncing roller along the radial direction of the steering roller is shown;

[0031] Figure 3 for Figure 2 The schematic diagram of the structure of the tension adjustment mechanism in the bouncing roller is shown.

[0032] In the figure: 100, bouncing roller; 10, fixed frame; 11, steering roller; 12, swivel seat; 13, first connecting ear; 14, latch seat; 20, tension detection mechanism; 21, detection roller; 22, tension sensor; 23, hinge seat; 24, rocker rod; 30, tension adjustment mechanism; 31, floating frame; 32, floating roller; 33, fixed weight; 331, first mounting rod; 332, first counterweight; 333, first anti-slip member; 34, movable weight; 341, sliding block; 342, second mounting rod; 343, second counterweight; 344, second anti-slip member; 35, weight driving member; 36, guide member; 37, rotating shaft; 38, safety pin; 39, second connecting ear. DETAILED DESCRIPTION

[0033] 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 in 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.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] See also Figures 1 to 3 , which is a bouncing roller 100 of a preferred embodiment of the utility model, includes a fixed frame 10, on which a steering roller 11 is rotatably arranged, and also includes a tension detection mechanism 20 and a tension adjustment mechanism 30 installed on the fixed frame 10; the tension detection mechanism 20 includes a detection roller 21 and a tension sensor 22, the detection roller 21 is rotatably arranged on the fixed frame 10, and the detection roller 21 and the steering roller 11 are arranged oppositely, and the tension sensor 22 is connected to the detection roller 21; the tension adjustment mechanism 30 includes a detection roller 21 and a tension sensor 22 connected to the detection roller 21; the tension adjustment mechanism 30 includes a detection roller 21 and a tension sensor 22 connected to the detection roller 21; the detection roller 21 is rotatably arranged on the fixed frame 10, and the detection roller 21 and the steering roller 11 are arranged oppositely, and the tension sensor 22 is ... The floating frame 31 is connected to a floating roller 32 rotatably set on the floating frame 31, and the floating roller 32 is located between the detection roller 21 and the steering roller 11. A movable weight 34 and a fixed weight 33 are respectively set on both sides of the floating roller 32. The fixed weight 33 is fixed at one end of the floating frame 31, and the movable weight 34 is slidably set at the other end of the floating frame 31. A weight driving component 35 for driving the movable weight 34 to approach or move away from the floating roller 32 is also installed on the floating frame 31, and the weight driving component 35 is connected to the signal of the tension sensor 22.

[0037] like Figure 1 As shown, in this embodiment, the steering roller 11 and the detection roller 21 are arranged at the top of the fixed frame 10, and the floating roller 32 is arranged at the middle and lower part of the fixed frame 10. In addition, in order to avoid interference between the fixed weight 33 and the movable weight 34 and the metal strip, the fixed weight 33 and the movable weight 34 are both arranged at the bottom of the floating frame 31, and the floating roller 32 is arranged at the top of the floating frame 31. In order to expand the range of tension adjustment, one end of the floating frame 31 is located inside the fixed frame 10, and the other end extends out of the fixed frame 10. At the same time, in order to avoid interference between the weight driving member 35 and the fixed frame 10, the weight driving member 35 is installed at the end of the floating frame 31 extending out of the fixed frame 10.

[0038] Furthermore, the tension detection mechanism 20 further includes an articulated seat 23 and a swing rod 24. The articulated seat 23 is mounted on the fixed frame 10. One end of the swing rod 24 is articulated with the articulated seat 23, and the other end is limitedly connected with the detection roller 21. The tension sensor 22 is arranged at the bottom of the swing rod 24, and the triggering part of the tension sensor 22 is in contact with the swing rod 24. The pressure exerted by the metal strip on the detection roller 21 will drive the swing rod 24 to swing. The tension sensor 22 detects the pressure value of the detection roller 21 according to the swing amplitude of the swing rod 24, and can accurately detect the real-time pressure on the detection roller 21.

[0039] Preferably, the floating frame 31 is provided with a guide member 36 that slides with the movable weight 34; optionally, the guide member 36 is a guide rod or a guide rail; when the guide member 36 is a guide rod, the movable weight 34 is provided with a linear bearing that slides with it; when the guide member 36 is a guide rail, the movable weight 34 is provided with a guide block that slides with it.

[0040] Preferably, the weight driving member 35 is a servo motor, the output end of the weight driving member 35 is connected to a ball screw, and a ball nut matched with the ball screw is installed on the movable weight 34. The servo motor cooperates with the ball screw and the ball nut to achieve precise control of the position of the movable weight 34 and improve the accuracy of tension adjustment.

[0041] In other embodiments, the movable weight 34 may be driven to move by a servo motor in conjunction with a gear and a rack, or by a servo motor in conjunction with a synchronous wheel and a synchronous belt, or by a servo motor in conjunction with a sprocket and a chain.

[0042] In other embodiments, a pneumatic cylinder, a hydraulic cylinder or an electric push rod may also be used as the weight driving member 35 .

[0043] like Figure 1 and Figure 2 As shown, a rotating shaft 37 is provided on the floating frame 31, and a rotating seat 12 is provided on the fixed frame 10 to rotate with the rotating shaft 37. The rotating shaft 37 cooperates with the rotating seat 12 to reduce the resistance of the floating frame 31 when it swings around the fixed frame 10, and at the same time, the fulcrum of rotation can be fixed to reduce the error of tension adjustment.

[0044] In this embodiment, the floating roller 32 is disposed between the rotating shaft 37 and the fixed weight 33. When the weight driving member 35 drives the movable weight 34 to move toward the floating roller 32, the floating roller 32 will descend, thereby increasing the tension of the metal strip; when the weight driving member 35 drives the movable weight 34 to move away from the floating roller 32, the floating roller 32 will rise, thereby reducing the tension of the metal strip.

[0045] When the floating roller 32 is disposed between the rotating shaft 37 and the movable weight 34, the adjustment direction of the tensioning force is opposite to the above-mentioned adjustment direction.

[0046] like Figure 2As shown, the fixed weight 33 includes a first mounting rod 331 and a plurality of first counterweights 332 inserted on the first mounting rod 331. One end of the first mounting rod 331 is connected to the floating frame 31, and the other end is connected to a first anti-dropping member 333. The first anti-dropping member 333 is used to prevent the first counterweight 332 from falling off the first mounting rod 331. The number of first counterweights 332 can be increased or decreased according to actual needs, so that the weight of the fixed weight 33 matches the adjusted metal strip, thereby improving the accuracy of tension adjustment.

[0047] Please refer to Figure 2 The movable weight 34 includes a sliding block 341 slidably connected to the floating frame 31, a second mounting rod 342 connected to the sliding block 341, and a plurality of second counterweights 343 inserted on the second mounting rod 342. The second mounting rod 342 is connected to a second anti-dropping member 344 at one end away from the sliding block 341. The second anti-dropping member 344 is used to prevent the second counterweight 343 from falling off the second mounting rod 342. The number of the second counterweights 343 can be increased or decreased according to actual conditions, so that the weight of the movable weight 34 matches the adjusted metal strip, so that the tension adjustment is more accurate.

[0048] In this embodiment, the first anti-slip component 333 and the second anti-slip component 344 are both nuts. In other embodiments, the first anti-slip component 333 and the second anti-slip component 344 can also be set as anti-slip pins or other anti-slip components that can achieve the same function.

[0049] In one embodiment, the tension adjustment mechanism 30 further includes a safety pin 38. The fixed frame 10 is provided with a first connecting ear 13, and the floating frame 31 is provided with a second connecting ear 39. The safety pin 38 passes through the first connecting ear 13 and the second connecting ear 39 to limit the relative rotation of the floating frame 31 and the fixed frame 10. When winding the metal strip or shutting down for maintenance, the safety pin 38 is passed through the first connecting ear 13 and the second connecting ear 39 to prevent the floating frame 31 from rotating, thereby improving safety.

[0050] Further, a latch seat 14 for placing the safety pin 38 is provided on the fixing frame 10. The latch seat 14 can be convenient for storing the safety pin 38, and can also be convenient for taking the safety pin 38 when needed.

[0051] The bouncing roller 100 of the present application also includes a controller (not shown), which is connected to the tension sensor 22 and the weight driver 35 by signal. The controller receives the tension value transmitted from the tension sensor 22, compares the detected tension value with the preset tension value, and then controls the weight driver 25 to perform corresponding actions based on the comparison structure, so that the tension of the metal strip is stabilized within a certain range.

[0052] In the bouncing roller 100 of the present application, the metal strip is sequentially wound around the steering roller 11, the floating roller 32 and the detection roller 21. When the tension sensor 22 detects that the tension applied to the detection roller 21 is different from the preset tension, the signal is transmitted to the weight driving component 35. The weight driving component 35 then drives the movable weight 34 to approach or move away from the floating roller 32 according to the signal. According to the lever principle, the movable weight 34 in different positions will cause the floating roller 32 to be at different heights, thereby changing the pressure applied to the metal strip by the floating roller 32, so that the final tension of the metal strip matches the preset tension, realizing real-time automatic adjustment of the tension, and having the advantages of simple structure and high control accuracy.

[0053] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bouncing roller, comprising a fixed frame (10), on which a steering roller (11) is rotatably arranged, characterized in that: It also includes a tension detection mechanism (20) and a tension adjustment mechanism (30) mounted on the fixing frame (10); The tension detection mechanism (20) comprises a detection roller (21) and a tension sensor (22); the detection roller (21) is rotatably arranged on a fixed frame (10), and the detection roller (21) and the steering roller (11) are arranged opposite to each other; and the tension sensor (22) is connected to the detection roller (21); The tension adjustment mechanism (30) comprises a floating frame (31) pivotally connected to a fixed frame (10) and a floating roller (32) rotatably arranged on the floating frame (31); the floating roller (32) is located between a detection roller (21) and a steering roller (11); movable weights (34) and fixed weights (33) are respectively arranged on both sides of the floating roller (32); the fixed weights (33) are fixedly arranged at one end of the floating frame (31); the movable weights (34) are slidably arranged at the other end of the floating frame (31); a weight driving member (35) for driving the movable weights (34) to approach or move away from the floating roller (32) is also installed on the floating frame (31); the weight driving member (35) is connected to the tension sensor (22) by signal.

2. The bouncing roller according to claim 1, characterized in that: The tension detection mechanism (20) further comprises an articulated seat (23) and a swing rod (24); the articulated seat (23) is mounted on a fixed frame; one end of the swing rod (24) is articulated with the articulated seat (23) and the other end is limitatively connected with the detection roller (21); the tension sensor (22) is arranged at the bottom of the swing rod (24), and the triggering part of the tension sensor (22) is in contact with the swing rod (24).

3. The bouncing roller according to claim 1, characterized in that: The floating frame (31) is provided with a guide member (36) which is slidably matched with the movable weight (34), and the guide member (36) is a guide rod or a guide rail.

4. The bouncing roller according to claim 1, characterized in that: The weight driving member (35) is a servo motor, the output end of the weight driving member (35) is connected to a ball screw, and a ball nut matched with the ball screw is installed on the movable weight (34).

5. The bouncing roller according to claim 1, characterized in that: The floating frame (31) is provided with a rotating shaft (37), and the fixed frame (10) is provided with a rotating seat (12) that is rotatably matched with the rotating shaft (37).

6. The bouncing roller according to claim 5, characterized in that: The floating roller (32) is arranged between the rotating shaft (37) and the fixed weight (33).

7. The bouncing roller according to claim 1, characterized in that: The fixed weight (33) comprises a first mounting rod (331) and a plurality of first counterweight blocks (332) inserted on the first mounting rod (331); one end of the first mounting rod (331) is connected to the floating frame (31); the other end is connected to a first anti-dropping member (333); the first anti-dropping member (333) is used to prevent the first counterweight block (332) from falling off the first mounting rod (331).

8. The bouncing roller according to claim 1, characterized in that: The movable weight (34) comprises a sliding block (341) slidably connected to the floating frame (31), a second mounting rod (342) connected to the sliding block (341), and a plurality of second counterweight blocks (343) inserted into the second mounting rod (342); one end of the second mounting rod (342) away from the sliding block (341) is connected to a second anti-dropping member (344), and the second anti-dropping member (344) is used to prevent the second counterweight block (343) from falling off the second mounting rod (342).

9. The bouncing roller according to claim 1, characterized in that: The tension adjustment mechanism (30) further comprises a safety pin (38), the fixed frame (10) is provided with a first connecting ear (13), the floating frame (31) is provided with a second connecting ear (39), and the safety pin (38) penetrates the first connecting ear (13) and the second connecting ear (39) to limit relative rotation between the floating frame (31) and the fixed frame (10).

10. The bouncing roller according to claim 9, characterized in that: The fixing frame (10) is provided with a latch seat (14) for accommodating a safety pin (38).

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