A powerful uncoiling device

Abstract

The utility model discloses a strong uncoiler, including uncoiler, first uncoiling guide plate, second uncoiling guide plate, deflection roller, rolling line roller and pinch roll, and the steel coil on the uncoiler adopts the production of the uncoiling mode, and the first uncoiling guide plate is located at the export of uncoiler, and the deflection roller, rolling line roller are located above first uncoiling guide plate, first uncoiling guide plate includes threading guide plate and drives the first swing hydraulic cylinder that swings on threading guide plate, and threading guide plate is close to one end of uncoiler and is provided with a pair of press roll, second uncoiling guide plate includes swing guide plate and second swing hydraulic cylinder, is provided with telescopic guide plate and first telescopic hydraulic cylinder on swing guide plate, and the front end of telescopic guide plate is provided with spade knife, pinch roll includes swing frame and third swing hydraulic cylinder, is provided with lifting frame and first lifting hydraulic cylinder on swing frame, and the lower end of lifting frame is provided with transmission roller, the utility model discloses can adapt to the uncoiling and threading operation of various specifications steel coil, and the operation is safe and reliable, and the production efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of strip rolling and leveling technology, specifically relating to a powerful uncoiling device, which is applicable to various rolling mills and leveling units. Background Technology

[0002] In cold rolling production, steel coils typically require uncoiling and threading operations at the mill inlet. For top-coiling production, an uncoiling guide or clamping device is usually installed at the uncoiler to guide the strip head into the pinch rolls for threading. However, with bottom-coiling production, conventional clamping devices are unsuitable for thick (4mm and above) high-strength steel coils; uncoiling solely with the uncoiling guide often results in the strip head being tightly stuck to the coil, making it difficult to unwind and leading to threading failure. In this case, manual uncoiling is necessary, which not only reduces production efficiency but also increases the risk of accidents. Utility Model Content

[0003] The present invention aims to provide a powerful unwinding device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a powerful uncoiling device, which is installed in the entrance area of ​​the rolling mill and leveling mill unit, including an uncoiler, a first uncoiling guide plate, a second uncoiling guide plate, a guide roller, a rolling mill roll, and a pinch roller. The steel coil on the uncoiler is produced by bottom uncoiling. The first uncoiling guide plate is located at the exit of the uncoiler. The guide roller and the rolling mill roll are located above the first uncoiling guide plate, and the guide roller and the rolling mill roll are arranged sequentially along the unfolding direction of the strip. The second uncoiling guide plate is located above the uncoiler, and the pinch roller is located above the guide roller. The first uncoiling guide plate includes a threading guide plate and a first swing hydraulic cylinder that drives the threading guide plate to swing up and down. A pair of pressure rollers are provided at one end of the threading guide plate near the uncoiling machine. The threading guide plate rotates around the axial center line of the steering roller and drives the pressure rollers to swing up and down through the first swing hydraulic cylinder. The second uncoiling guide plate includes a swing guide plate and a second swing hydraulic cylinder that drives the swing guide plate to swing up and down. The swing guide plate is provided with a telescopic guide plate and a first telescopic hydraulic cylinder that drives the telescopic guide plate to slide back and forth. The front end of the telescopic guide plate is provided with a shovel. The pinch roller includes a swing frame and a third swing hydraulic cylinder that drives the swing frame to swing left and right. The swing frame is equipped with a lifting frame and a first lifting hydraulic cylinder that drives the lifting frame to move up and down. The lower end of the lifting frame is equipped with a transmission roller. Both the first swing hydraulic cylinder and the first lifting hydraulic cylinder are equipped with pressure detection devices.

[0005] Preferably, the pressure roller is a rubber-lined roller.

[0006] Preferably, the swing guide plate is provided with a first slide groove along the front-to-back direction, and the telescopic guide plate is slidably disposed on the first slide groove.

[0007] Preferably, a second slide groove is provided on the swing frame along the vertical direction, and the lifting frame is slidably disposed on the second slide groove.

[0008] Preferably, the blade is a high-strength hardened steel blade.

[0009] Preferably, both the steering roller and the rolling mill roller are made of steel.

[0010] Preferably, the drive roller is a rubber-lined roller, and the drive roller is connected to a rotary drive component for driving its rotation.

[0011] Preferably, the rotary drive is an electric motor or a hydraulic motor.

[0012] This utility model has the following beneficial effects: 1. The steel coil adopts the bottom uncoiling method. Compared with the top uncoiling method, the equipment in the uncoiling area can be raised from underground to the ground, saving civil engineering investment and facilitating subsequent equipment inspection and maintenance.

[0013] 2. The first and second uncoiling guide plates work together to ensure that steel coils of various specifications can be uncoiled smoothly. They are especially suitable for the production of thick-gauge high-strength steel, and the operation is safe, reliable and efficient.

[0014] 3. The pinch rolls, guide rolls and rolling mill rolls are used together to straighten the strip head, effectively reducing strip head warping and facilitating subsequent uncoiling and threading. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the powerful unwinding device according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the unwinding process according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the straightening process of the head in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Uncoiling machine; 2. First uncoiling guide plate; 21. Threading guide plate; 22. First swing hydraulic cylinder; 23. Pressure roller; 3. Second uncoiling guide plate; 31. Swing guide plate; 32. Second swing hydraulic cylinder; 33. Telescopic guide plate; 34. First telescopic hydraulic cylinder; 35. Shovel; 4. Pinch roller; 41. Swing frame; 42. Third swing hydraulic cylinder; 43. Lifting frame; 44. First lifting hydraulic cylinder; 45. Drive roller; 5. Steering roller; 6. Rolling mill roll; 7. Steel coil; 71. Strip head. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] See Figure 1-3 As shown in the figure, as an embodiment of the present invention, a powerful uncoiling device is provided. This device is set in the entrance area of ​​the rolling mill or leveling mill unit and is particularly suitable for the uncoiling and threading operation of high-strength steel coils 7 with thick specifications (thickness of 4mm or more). It includes an uncoiler 1, a first uncoiling guide plate 2, a second uncoiling guide plate 3, a steering roller 5, a rolling line roller 6, and a pinch roller 4. The steel coil 7 on the uncoiler 1 is produced by a bottom uncoiling method, that is, the strip head 71 unfolds along the lower direction of the steel coil 7 and enters the rolling mill or leveling mill unit. The bottom uncoiling production method can raise the entire equipment in the uncoiling area, which is beneficial to reduce the civil engineering investment cost and facilitate subsequent equipment inspection and maintenance. The first uncoiling guide plate 2 is located at the exit of the uncoiler 1. The steering roller 5 and the rolling line roller 6 are located above the first uncoiling guide plate 2, and the steering roller 5 and the rolling line roller 6 are arranged sequentially along the unfolding direction of the strip. The second uncoiling guide plate 3 is located above the uncoiler 1, and the pinch roller 4 is located above the steering roller 5. The first uncoiling guide plate 2 includes a threading guide plate 21 and a first swing hydraulic cylinder 22 that drives the threading guide plate 21 to swing up and down. A pair of pressure rollers 23 are provided at one end of the threading guide plate 21 near the uncoiling machine 1. The threading guide plate 21 rotates around the axial center line of the steering roller 5 and drives the pressure rollers 23 to swing up and down through the first swing hydraulic cylinder 22. The second uncoiling guide plate 3 includes a swing guide plate 31 and a second swing hydraulic cylinder 32 that drives the swing guide plate 31 to swing up and down. The swing guide plate 31 is provided with a telescopic guide plate 33 and a first telescopic hydraulic cylinder 34 that drives the telescopic guide plate 33 to slide back and forth. The front end of the telescopic guide plate 33 is provided with a shovel 35. The pinch roller 4 includes a swing frame 41 and a third swing hydraulic cylinder 42 that drives the swing frame 41 to swing left and right. The swing frame 41 is provided with a lifting frame 43 and a first lifting hydraulic cylinder 44 that drives the lifting frame 43 to move up and down. The lower end of the lifting frame 43 is provided with a transmission roller 45. Both the first swing hydraulic cylinder 22 and the first lifting hydraulic cylinder 44 are equipped with pressure detection devices.

[0023] like Figure 1-2 As shown, during the uncoiling process, for thick-gauge high-strength steel coils 7, the strip head 71 often adheres tightly to the surface of the coil 7 and cannot unfold. The second swing hydraulic cylinder 32 drives the swing guide plate 31 to swing downwards, and the first telescopic hydraulic cylinder 34 drives the telescopic guide plate 33 to slide forward. Then, the strip head 71 is peeled off using the scraper 35, facilitating strip threading. During uncoiling and threading, the pressure roller 23 presses down on the steel coil 7 to prevent loosening, and the clamping force is adjusted by a pressure detection device. Figure 2-3 As shown, the left and right positions of the swing frame 41 are adjusted by the third swing hydraulic cylinder 42, and the lifting frame 43 is moved up and down by the first lifting hydraulic cylinder 44, thereby adjusting the lifting height of the transmission roller 45. This allows the transmission roller 45 to press down on the strip above the guide roller 5, thus achieving the clamping and feeding of the strip. Alternatively, the transmission roller 45 can be pressed in the area between the guide roller 5 and the rolling mill 6 to straighten the strip head 71, preventing subsequent threading from getting stuck and ensuring that the strip head 71 can be uncoiled and threaded smoothly. This method is particularly suitable for the production of thick-gauge high-strength steel.

[0024] In this embodiment, the pressure roller 23 is a rubber-lined roller, which can prevent damage to the strip and has a good pressing effect.

[0025] In this embodiment, a first sliding groove is provided on the swing guide plate 31 along the front-back direction, and the telescopic guide plate 33 is slidably disposed on the first sliding groove, which plays a guiding and limiting role for the telescopic guide plate 33 and improves the sliding accuracy of the telescopic guide plate 33.

[0026] In this embodiment, a second slide groove is provided on the swing frame 41 along the vertical direction, and the lifting frame 43 is slidably disposed on the second slide groove, which plays a guiding and limiting role for the lifting frame 43, improving the sliding accuracy of the lifting frame 43, and thus improving the height adjustment accuracy of the transmission roller 45.

[0027] In this embodiment, the scraper 35 is a high-strength hard steel scraper, which is more robust and reliable, ensuring that it can successfully peel off the strip 71.

[0028] In this embodiment, both the steering roller 5 and the rolling mill roller 6 are made of steel to ensure strength and hardness.

[0029] In this embodiment, the transmission roller 45 is a rubber-lined roller, and the transmission roller 45 is connected to a rotary drive component for driving its rotation. The rotary drive component is an electric motor or a hydraulic motor. This arrangement can prevent damage to the strip steel and has a good clamping effect.

[0030] This utility model also provides a powerful unwinding method using the powerful unwinding device as described in the above embodiments, comprising the following steps: Step 1: Transport the steel coil 7 onto the uncoiler 1, with the initial position of the lead 71 located at the 7-8 o'clock position below the drum of the uncoiler 1; Step 2: The first swing hydraulic cylinder 22 drives the belt guide plate 21 to swing upward, pressing the belt head 71 through the pressure roller 23 until the pressure P1 set by the pressure detection device on the first swing hydraulic cylinder 22 is reached, and the pressing state is maintained continuously. Step 3: Uncoiler 1 rotates along the strip unfolding direction until the strip head 71 is located at the 11 o'clock position above the drum of uncoiler 1; Step 4: Based on the diameter of the steel coil 7, the second swing hydraulic cylinder 32 drives the swing guide plate 31 to swing downwards until the scraper 35 swings to the position below the head 71. Step 5: The first telescopic hydraulic cylinder 34 drives the telescopic guide plate 33 to extend forward, and the shovel 35 lifts the strip head 71, so that the strip head 71 is separated from the steel coil 7; at the same time, the uncoiler 1 continues to rotate along the strip unfolding direction, and the second uncoiler guide plate 3 guides the strip head 71 to the top of the guide roller 5. Step 6: The third swing hydraulic cylinder 42 drives the swing frame 41 to swing towards the uncoiler 1. At the same time, the first lifting hydraulic cylinder 44 drives the lifting frame 43 to move downward to adjust the height of the lifting frame 43, which in turn drives the transmission roller 45 to move downward. The transmission roller 45 presses the strip head 71 onto the guide roller 5 until the pressure P2 set by the pressure detection device on the first lifting hydraulic cylinder 44 is reached. The transmission roller 45 then stops moving downward and continues to maintain the pressing state. Step 7: The uncoiler 1 and the drive roller 45 rotate synchronously along the strip unfolding direction until the strip head 71 crawls above the rolling mill roller 6; Step 8: The third swing hydraulic cylinder 42 drives the swing frame 41 to swing away from the coiler 1. The first lifting hydraulic cylinder 44 drives the lifting frame 43 to continue to move downward to adjust the height of the lifting frame 43, thereby driving the transmission roller 45 to continue to move downward, so that the transmission roller 45 presses the strip between the guide roller 5 and the rolling mill 6. Step 9: The uncoiler 1 and the drive roller 45 rotate synchronously along the strip winding direction until the strip head 71 returns to above the guide roller 5; Step 10: Repeat steps 7 to 9 several times until the warping of the strip head 71 is eliminated, ensuring that the strip steel can be smoothly unfolded and threaded.

[0031] In summary, the powerful unwinding device of this utility model has the following advantages: 1. The steel coil adopts the bottom uncoiling method. Compared with the top uncoiling method, the equipment in the uncoiling area can be raised from underground to the ground, saving civil engineering investment and facilitating subsequent equipment inspection and maintenance.

[0032] 2. The first and second uncoiling guide plates work together to ensure that steel coils of various specifications can be uncoiled smoothly. They are especially suitable for the production of thick-gauge high-strength steel, and the operation is safe, reliable and efficient.

[0033] 3. The pinch rolls, guide rolls and rolling mill rolls are used together to straighten the strip head, effectively reducing strip head warping and facilitating subsequent uncoiling and threading.

[0034] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A high-power uncoiling device, wherein the device is installed in the inlet area of ​​a rolling mill or leveling mill unit, characterized in that: It includes an uncoiler, a first uncoiler guide plate, a second uncoiler guide plate, a guide roller, a rolling mill roll, and a pinch roll. The steel coil on the uncoiler is produced by bottom uncoiling. The first uncoiler guide plate is located at the exit of the uncoiler. The guide roller and the rolling mill roll are located above the first uncoiler guide plate and are arranged sequentially along the unfolding direction of the strip. The second uncoiler guide plate is located above the uncoiler, and the pinch roll is located above the guide roller. The first uncoiling guide plate includes a threading guide plate and a first swing hydraulic cylinder that drives the threading guide plate to swing up and down. A pair of pressure rollers are provided at one end of the threading guide plate near the uncoiling machine. The threading guide plate rotates around the axial center line of the steering roller and drives the pressure rollers to swing up and down through the first swing hydraulic cylinder. The second uncoiling guide plate includes a swing guide plate and a second swing hydraulic cylinder that drives the swing guide plate to swing up and down. The swing guide plate is provided with a telescopic guide plate and a first telescopic hydraulic cylinder that drives the telescopic guide plate to slide back and forth. The front end of the telescopic guide plate is provided with a shovel. The pinch roller includes a swing frame and a third swing hydraulic cylinder that drives the swing frame to swing left and right. The swing frame is equipped with a lifting frame and a first lifting hydraulic cylinder that drives the lifting frame to move up and down. The lower end of the lifting frame is equipped with a transmission roller. Both the first swing hydraulic cylinder and the first lifting hydraulic cylinder are equipped with pressure detection devices.

2. The high-strength unwinding device according to claim 1, characterized in that: The pressure roller is a rubber-lined roller.

3. The high-strength unwinding device according to claim 1, characterized in that: The swing guide plate has a first slide groove along the front-to-back direction, and the telescopic guide plate is slidably mounted on the first slide groove.

4. The high-strength unwinding device according to claim 1, characterized in that: A second slide groove is provided on the upper and lower sides of the swing frame, and the lifting frame is slidably mounted on the second slide groove.

5. The high-strength unwinding device according to claim 1, characterized in that: The blade is made of high-strength hardened steel.

6. The high-strength unwinding device according to claim 1, characterized in that: Both the steering rollers and the rolling mill rollers are made of steel.

7. The high-strength unwinding device according to claim 1, characterized in that: The drive roller is a rubber-lined roller, and a rotary drive component is connected to the drive roller to drive its rotation.

8. The high-strength unwinding device according to claim 7, characterized in that: The rotary drive is an electric motor or a hydraulic motor.

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