Tension roller device for strip steel rolling

Abstract

The tension roller device comprises a machine base, a first tension roller, a second tension roller, a first pressing roller and a second pressing roller, the upper end of the second tension roller is a strip steel input end, the lower end of the first tension roller is a strip steel output end, and strip steel is tensioned through the first tension roller after being tensioned through the second tension roller; the second compression roller is located above the second tension roller and compresses the strip steel on the input end of the second tension roller, the first compression roller is located below the first tension roller and compresses the strip steel on the output end of the first tension roller, and the compression positions of the first compression roller and the second compression roller are in central symmetry. Each compression roller is driven by a set of transmission device, each transmission device comprises a connecting block, a hydraulic cylinder, a connecting rod and a swing arm, and the connecting blocks of the two sets of transmission devices are fixed to the same position of the machine base and share one fixing base. The device is simple in structure, convenient to operate and accurate in tension control.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling equipment, and particularly relates to a tension roll device for strip rolling. Background Art

[0002] With the continuous development of industrial manufacturing technology, rolling mills, as important metal processing equipment, have been widely used in industries such as iron and steel, non-ferrous metals, etc. During the rolling process, the strip needs to be continuously processed by multiple rollers to achieve the required thickness, width, and surface quality. In this process, the tension roll device plays a crucial role. It can provide the necessary tension to keep the strip in a stable transmission state during rolling, preventing problems such as slack, twist, or breakage of the strip.

[0003] However, traditional tension roll devices have some deficiencies in design and performance. On the one hand, traditional tension roll devices often have complex structures and large floor areas, which are not conducive to the layout of equipment and the utilization of space. On the other hand, traditional tension roll devices have certain limitations in control accuracy and stability, and it is difficult to meet the requirements of modern rolling processes for high precision and high efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tension roll device for strip rolling. This device is located at the entrance of the deviation rectifying roll and is used to provide post-rolling tension. It has a simple structure, convenient operation, precise tension control, improves the accuracy and stability of strip transmission, reduces production problems that may be caused by deviation, and enhances the operating efficiency and product quality of the entire system.

[0005] To achieve the above purpose, the solution of the utility model is: A tension roll device for strip rolling, including a machine base, a first tension roll, a second tension roll, a first pressing roll, and a second pressing roll. The first tension roll and the second tension roll are arranged on the machine base at intervals along the movement direction of the strip. The upper end of the second tension roll is the strip input end, and the lower end of the first tension roll is the strip output end. The strip is tensioned by the second tension roll and then tensioned by the first tension roll;

[0006] The second pressing roll is located above the second tension roll and presses the strip against the input end on the second tension roll. The first pressing roll is located below the first tension roll and presses the strip against the output end on the first tension roll. And the positions pressed by the first pressing roll and the second pressing roll are centrosymmetric;

[0007] Each pressure roller is driven by a set of transmission devices. Each set of transmission devices includes a connecting block, a hydraulic cylinder, a connecting rod, and a swing arm. The connecting blocks of the two sets of transmission devices are fixed at the same position on the machine base and share a fixed seat. Among them, the hydraulic cylinder is hinged to the machine base through the connecting block. One end of the connecting rod is connected to the output end of the hydraulic cylinder, and the other end of the connecting rod and the swing arm are jointly hinged to the rotating shaft of the machine base. The hydraulic cylinder drives the connecting rod to swing, thereby causing the swing arm to swing around the rotating shaft, approaching or moving away from the tension roller. The two ends of the pressure roller are hinged to the free ends of the swing arms and are used to press the strip steel against the surface of the tension roller.

[0008] Furthermore, the two sets of transmission devices are centrosymmetric. In the first set of transmission mechanisms, the output end of the hydraulic cylinder faces downward, the rotating shaft is located on the side at the bottom end of the machine base, and the swing arm connected to the rotating shaft extends downward from the connection point to the lower part of the first tension roller.

[0009] In the second set of transmission mechanisms, the output end of the hydraulic cylinder faces upward, the rotating shaft is located at the top end of the machine base, and the swing arm connected to the rotating shaft extends upward from the connection point to the upper part of the second tension roller.

[0010] Furthermore, the tension roller is fixed to the machine base through a bearing seat and is driven by a driving device.

[0011] The driving device includes a coupling, a speed reducer, and a motor. The motor provides power for the tension roller. The coupling connects the output shaft of the speed reducer and the input shaft of the tension roller respectively to achieve power transmission. The speed reducer is located between the motor and the coupling to reduce the speed of the motor and increase the torque.

[0012] Furthermore, the first tension roller and the second tension roller have the same roller diameter, and the axis of the second tension roller is slightly higher than the axis of the first tension roller.

[0013] Furthermore, the rotating shaft is fixed to the machine base through a rotating shaft seat, and the rotating shaft seat is fixedly connected to the machine base through fasteners.

[0014] Furthermore, the fasteners are bolts.

[0015] After adopting the above scheme, the beneficial effects of the utility model are as follows:

[0016] First, through the combined design of two sets of tension rollers and two sets of pressure rollers, precise control of the strip tension is achieved. This not only ensures the stability of the strip during the rolling process but also effectively prevents the possible sliding or deviation of the strip during transmission, thus significantly improving the stability of the rolling process and product quality. Specifically, the second pressure roller is located above the second tension roller, pressing the strip tightly on the input end of the second tension roller. The first pressure roller is located below the first tension roller, pressing the strip tightly on the output end of the first tension roller. The positions where the first pressure roller and the second pressure roller press the strip are symmetrically arranged around the center, and this design helps to maintain the overall balance of the strip during transmission. Although the strip located in the middle position between the two tension rollers is evenly tensioned by the two tension rollers and can maintain good stability, at the input and output ends, due to boundary effects and possible external disturbances, the strip is prone to deviation. Therefore, by precisely designing and positioning the two pressure rollers, they provide additional pressing force at the input and output ends of the strip, effectively preventing the strip from deviating at these critical positions.

[0017] The two sets of transmission devices are symmetrically arranged around the center, being physically balanced with each other, which helps to reduce vibrations and noises caused by uneven weight distribution or uneven force application, thus improving the stability and reliability of the entire system. In addition, the central symmetry design can ensure that the two sets of transmission devices have the same characteristics when transmitting force and motion, which helps to improve the transmission accuracy and consistency of the system.

[0018] In the present utility model, the swing arm is driven by a hydraulic cylinder to swing, thereby achieving precise control of the pressure roller. This design enables the pressure roller to approach or move away from the tension roller according to actual needs, realizing effective pressing of the strip. At the same time, the hydraulic drive method has the characteristics of fast response speed and high control precision, ensuring that the strip always maintains an appropriate tension state during the rolling process.

[0019] In addition, the present utility model also improves the overall stability and reliability of the device by optimizing the design of the rotating shaft and the fixed seat. The rotating shaft is fixed on the machine base through a sturdy rotating shaft seat, ensuring its stability during long-term operation; while the design of sharing a fixed seat by the two sets of transmission devices simplifies the device structure, reduces the manufacturing cost, and enhances the coordination between the device components. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the tension roller device of the present utility model.

[0021] Label Description:

[0022] 1. Machine base; 2. First tension roller; 3. Second tension roller; 4. First pressure roller; 5. Second pressure roller;

[0023] 6. Transmission device; 61. Connecting block; 62. Hydraulic cylinder; 63. Connecting rod; 64. Swing arm; 65. Fixed seat.

[0024] 7. Rotating shaft; 8. Rotating shaft seat; 9. Fastener. Detailed implementation manner

[0025] The following combines the attached drawings and specific embodiments to make a detailed description of the present utility model.

[0026] The present utility model provides a tension roll device for strip rolling. This device is arranged at the entrance of the deviation rectifying roll, so that the strip can obtain appropriate tension after rolling, thereby ensuring the stability of the rolling process and the product quality.

[0027] As Figure 1 shown, it includes a machine base 1, a first tension roll 2, a second tension roll 3, a first pressure roll 4, and a second pressure roll 5. The first tension roll 2 and the second tension roll 3 are arranged on the machine base 1 at intervals along the movement direction of the strip, so that the strip can be wound around these two tension rolls in sequence to achieve a continuous and stable tensioning effect. The upper end of the second tension roll 3 is the strip input end, and the lower end of the first tension roll 2 is the strip output end. The strip is tensioned by the second tension roll 3 and then tensioned by the first tension roll 2.

[0028] The roll diameters of the first tension roll 2 and the second tension roll 3 are the same, ensuring that they have similar mechanical properties when transmitting the strip, so as to maintain the stability of the strip during transmission. At the same time, the axis of the second tension roll 3 is designed to be slightly higher than the axis of the first tension roll 2. By adjusting the relative height between the two tension rolls, it can better adapt to strips of different specifications and thicknesses, ensuring that the strip can maintain an appropriate tension state when passing through these two tension rolls, and avoiding the situation of being too tight or too loose. This design not only improves the stability and reliability of the strip rolling process, but also helps to improve the product quality and production efficiency.

[0029] In the present utility model, the tension roll is firmly fixed on the machine base 1 through a bearing seat to ensure its stability during high-speed operation. The driving device for driving the tension roll includes a coupling, a speed reducer, and a motor (not shown in the figure). The motor provides power for the tension roll. The coupling connects the output shaft of the speed reducer and the input shaft of the tension roll respectively to achieve power transmission. The speed reducer is located between the motor and the coupling, and its function is to convert the high-speed and low-torque power of the motor into the low-speed and high-torque power required by the tension roll to meet the actual working requirements.

[0030] As Figure 1As shown in the figure, the second pressure roller 5 is located above the second tension roller 3, pressing the strip steel tightly on the input end of the second tension roller 3. The first pressure roller 4 is located below the first tension roller 2, pressing the strip steel tightly on the output end of the first tension roller 2. Moreover, the positions pressed by the first pressure roller 4 and the second pressure roller 5 are centrosymmetric, and they provide additional pressing forces at the input and output ends of the strip steel, thus effectively preventing the strip steel from shifting at these key positions.

[0031] In terms of the driving method of the pressure rollers, the present utility model adopts a hydraulic drive transmission device 6 to drive the pressure rollers. Each pressure roller is driven by a set of transmission devices 6, and the two sets of transmission devices 6 are arranged centrosymmetrically. The centrosymmetric design enables the two sets of transmission devices 6 to be physically balanced with each other, which helps to reduce vibrations and noises caused by uneven weight distribution or uneven force action, thereby improving the stability and reliability of the entire system. In addition, the centrosymmetric design can ensure that the two sets of transmission devices 6 have the same characteristics when transmitting force and motion, which helps to improve the transmission accuracy and consistency of the system.

[0032] Each set of transmission devices 6 includes a connecting block 61, a hydraulic cylinder 62, a connecting rod 63, and a swing arm 64. The connecting blocks 61 of the two sets of transmission devices 6 are fixed at the same position on the machine base 1, sharing a fixed seat 65. By fixing the connecting blocks 61 of the two sets of transmission devices 6 at the same position and using a common fixed seat 65, the number of required components can be reduced, making the entire device more compact and concise. This not only facilitates the assembly and maintenance of the device but also reduces the manufacturing cost. Secondly, sharing a fixed seat 65 can enhance the overall stability of the device.

[0033] As Figure 1 shown in the figure, the hydraulic cylinder 62 in the transmission device 6 is hinged to the machine base 1 through the connecting block 61. One end of the connecting rod 63 is connected to the output end of the hydraulic cylinder 62, and the other end is jointly hinged to the rotary shaft 7 of the machine base 1 with the swing arm 64. Both ends of the pressure roller are hinged to the swing arm 64. When the hydraulic cylinder 62 works, its telescopic rod extends and retracts to drive the connecting rod 63 to swing, and then makes the swing arm 64 swing around the rotary shaft 7, thereby driving the pressure roller to approach or move away from the tension roller, realizing the pressing or loosening of the strip steel.

[0034] In the first set of transmission mechanisms, the output end of the hydraulic cylinder 62 faces downward, enabling the force to act directly and effectively on the mechanism below. The rotary shaft 7 is located on the side at the bottom end of the machine base 1, and the swing arm 64 connected to the rotary shaft 7 extends from the connection point towards the lower part of the first tension roller 2. In this way, the swing arm 64 can accurately control the movement of the first pressure roller 4, ensuring that the strip steel is stably pressed below the first tension roller 2.

[0035] In the second set of transmission mechanisms, the output end of the hydraulic cylinder 62 faces upward, forming a symmetrical and complementary layout with the first set of transmission mechanisms. The rotating shaft 7 is located at the top of the machine base 1. The swing arm 64 connected to the rotating shaft 7 extends upward from the connection point above the second tension roller 3. In this way, the second pressure roller 5 can accurately press the strip steel above the second tension roller 3 to achieve stable overall transmission.

[0036] The rotating shaft 7 is fixed to the machine base 1 through a rotating shaft seat 8 to ensure the stability of the rotating shaft 7. The rotating shaft seat 8 and the machine base 1 are fixedly connected through a fastener 9. The fastener 9 can be a bolt. This connection method is both simple and reliable, and can ensure that the rotating shaft 7 rotates stably during long-term operation. To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0037] At the same time, the front, rear, left, right and other directions involved in this embodiment are only for reference of a direction and do not represent the directions in actual use. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] The above is only the preferred embodiment of the present invention and does not limit the design of this case. Any equivalent changes made according to the key design of this case fall within the protection scope of this case.

Claims

1. A tension roller device for strip rolling, characterized in that: It includes a machine base, a No. 1 tension roller, a No. 2 tension roller, a No. 1 pressure roller and a No. 2 pressure roller. The No. 1 tension roller and the No. 2 tension roller are arranged on the machine base at intervals along the moving direction of the strip steel. The upper end of the No. 2 tension roller is the strip steel input end, and the lower end of the No. 1 tension roller is the strip steel output end. The strip steel is tensioned by the No. 2 tension roller and then tensioned by the No. 1 tension roller. The No. 2 pressure roller is located above the No. 2 tension roller, pressing the strip against the input end of the No. 2 tension roller. The No. 1 pressure roller is located below the No. 1 tension roller, pressing the strip against the output end of the No. 1 tension roller, and the pressing positions of the No. 1 pressure roller and the No. 2 pressure roller are symmetrical to each other. Each pressure roller is driven by a set of transmission devices, and each set of transmission devices includes a connecting block, a hydraulic cylinder, a connecting rod and a swing arm. The connecting blocks of the two sets of transmission devices are fixed at the same position of the machine base and share a fixed base; wherein, the hydraulic cylinder is hinged to the machine base through the connecting block, one end of the connecting rod is connected to the output end of the hydraulic cylinder, and the other end of the connecting rod and the swing arm are hinged to the rotating shaft of the machine base. The hydraulic cylinder drives the connecting rod to swing, and then the swing arm swings around the rotating shaft, approaching or moving away from the tension roller; the two ends of the pressure roller are hinged to the free end of the swing arm, which is used to press the strip against the roller surface of the tension roller.

2. A tension roller device for strip rolling according to claim 1, characterized in that: The two transmission devices are centrally symmetrical. In the first transmission mechanism, the output end of the hydraulic cylinder faces downward, the rotary shaft is located on the side of the bottom end of the machine base, and the swing arm connected to the rotary shaft extends from the connection to the bottom of the No. 1 tension roller; In the second transmission mechanism, the output end of the hydraulic cylinder faces upward, the rotary shaft is located at the top of the machine base, and the swing arm connected to the rotary shaft extends from the connection to the top of the second tension roller.

3. A tension roller device for strip rolling according to claim 1, characterized in that: The tension roller is fixed on the machine base through a bearing seat and driven by a driving device; The driving device includes a coupling, a reducer and a motor. The motor provides power for the tension roller. The coupling connects the output shaft of the reducer and the input shaft of the tension roller respectively to realize power transmission. The reducer is located between the motor and the coupling to reduce the speed of the motor and increase the torque.

4. A tension roller device for strip rolling according to claim 1, characterized in that: The roller diameters of the No. 1 tension roller and the No. 2 tension roller are the same, and the axis of the No. 2 tension roller is higher than the axis of the No. 1 tension roller.

5. A tension roller device for strip rolling according to claim 1, characterized in that: The rotary shaft is fixed on the machine base via a rotary shaft seat, and the rotary shaft seat and the machine base are fixedly connected via fasteners.

6. A tension roller device for strip rolling according to claim 5, characterized in that: The fastener is a bolt.

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