Device for improving indentation of tail pressing roller at tail of hot-rolled aluminum coil and working method

Abstract

The invention relates to a hot-rolled aluminum coil tail pressing roller indentation improving device and a working method, and the hot-rolled aluminum coil tail pressing roller indentation improving device comprises a winding machine which is arranged at an outlet of a hot finishing mill and is used for winding a thin aluminum material to form an aluminum coil, and a fixing frame which is arranged above a winding core shaft of the winding machine, a tail pressing roller support and a tail pressing roller are rotationally hinged to the fixing frame, the tail pressing roller is rotationally hinged to the tail pressing roller support, and a lifting cylinder for driving the tail pressing roller support to rotate around the fixing frame is fixedly arranged on the fixing frame. A laser distance measuring sensor used for measuring the movement distance of the telescopic rod and the tail pressing roller support driven by the lifting cylinder is fixedly arranged on the fixing frame or the lifting cylinder, the laser distance measuring sensor is electrically connected with a controller, and the controller is electrically connected with the lifting cylinder to control the movement distance of the telescopic rod, the tail pressing roller support and the tail pressing roller driven by the lifting cylinder. According to the device and the working method, indentations at the tail of the aluminum coil can be improved, the product yield is well increased, and therefore the production cost is reduced.

Description

Technical Field

[0002] The invention relates to a technology for improving the indentation of an aluminum coil tail, in particular to a device for improving the indentation of a tail roller of a hot-rolled aluminum coil tail and a working method. Background Art

[0004] With the development of the aluminum processing industry, the market's quality requirements for aluminum hot-rolled products are constantly increasing. The hot finishing mill, as the last station of aluminum hot rolling, is responsible for rolling the hot aluminum strip to a thinner thickness and using a winder to coil it in the finishing rolling exit area to finally become an aluminum coil; and when the tail of the aluminum coil is rolled, due to the fast rotation speed of the aluminum coil and the loss of tension of the strip, the tail of the aluminum coil on the winding core shaft of the winder will be thrown outward due to centrifugation. In order to prevent the tail of the aluminum coil from being thrown out and colliding with the equipment, it is necessary to lower the tail pressure roller to the outermost layer of the aluminum coil before the aluminum coil is produced to the tail and loses tension, and the aluminum coil is rotated with the aluminum coil.

[0005] Due to different production batches, the coil diameters of aluminum coils are different. In this case, it is necessary to manually adjust the downward stroke of the tail pressing roller based on experience before production according to the coil diameter of the aluminum coil. Due to manual adjustment and reliance on experience, it is easy to cause unreasonable setting of the downward stroke of the tail pressing roller, and the stroke is directly pressed into place when the tail section of the aluminum coil is several turns. The tail section of the aluminum coil rotates relative to the tail pressing roller for several turns. When the pressure of the tail pressing roller is large, indentations will be formed on the surface of the tail section of the aluminum coil, affecting the quality of the finished product. In order to ensure product quality, the portion of the aluminum coil surface with indentations will be cut off in subsequent processing steps, resulting in waste. Summary of the invention

[0007] In view of this, the purpose of the present invention is to provide a device and a working method for improving the indentation of the tail roller at the tail of a hot-rolled aluminum coil. The device and the working method can improve the indentation at the tail of the aluminum coil and better improve the product yield, thereby reducing production costs.

[0008] The device for improving the indentation of the tail roller at the tail of a hot-rolled aluminum coil of the present invention is characterized in that it includes a coiler arranged at the outlet of a hot finishing mill for coiling thin aluminum material to form an aluminum coil and a fixed frame arranged above the coil core shaft of the coiler, a tail roller bracket and a tail roller rotatably hinged on the fixed frame are rotatably hinged, a lifting cylinder for driving the tail roller bracket to rotate around the fixed frame is fixedly provided on the fixed frame, a laser distance measuring sensor for measuring the movement distance of the telescopic rod and the tail roller bracket driven by the lifting cylinder is fixedly provided on the fixed frame or the lifting cylinder, the laser distance measuring sensor is electrically connected to a controller, and the controller is electrically connected to the lifting cylinder to control the movement distance of the telescopic rod, the tail roller bracket and the tail roller driven by the lifting cylinder.

[0009] Furthermore, a laser ranging sensor reflector is installed on the tail roller bracket to reflect the laser emitted by the laser ranging sensor.

[0010] Furthermore, the lifting cylinder is an electric push rod or a pneumatic cylinder or a hydraulic cylinder with controllable telescopic length.

[0011] Furthermore, the tail pressing roller is a rubber roller or a silicone roller, so as to reduce the indentation when the tail pressing roller contacts the surface of the aluminum coil.

[0012] Furthermore, the relationship between the travel (Y) of the telescopic rod driven by the lifting cylinder and the diameter (X) of the aluminum coil is as follows: Y = -180.27X + 1244.4.

[0013] Furthermore, a first position sensor and a second position sensor are installed near the exit on the production line of the hot finishing mill, and the first position sensor and the second position sensor are electrically connected to the controller so that when the tail end of the strip passes through the first position sensor and the second position sensor, the controller drives the lifting cylinder to move the tail roller bracket and the tail roller to descend.

[0014] Furthermore, the first position sensor is 50-100 meters away from the exit of the hot finishing rolling mill, and the second position sensor is 10-50 meters away from the exit of the hot finishing rolling mill.

[0015] The working method of the device for improving the indentation of the tail roller of the hot-rolled aluminum coil of the present invention is characterized by: Step 1: Install a laser distance measuring sensor on the cylinder body of the lifting cylinder to detect the travel of the telescopic rod of the lifting cylinder, and then collect the travel data of the telescopic rod of the lifting cylinder when the tail roller of aluminum coil products with different coil diameters falls to press the aluminum coil; Step 2: Fit the data collected in step 1 to obtain an equation of the diameter of the aluminum coil and the travel of the telescopic rod of the lifting cylinder. Use the X-axis as the current diameter of the aluminum coil and the Y-axis as the travel of the telescopic rod of the lifting cylinder when the tail roller falls to the final position. Set this function in the controller and calculate the final position X of the tail roller pressing the aluminum coil in advance according to the current diameter of the aluminum coil in the production process. 1 ; Step 3: During the production process of the finishing mill, when the tail of the strip passes the first position sensor, the controller drives the lifting cylinder to make the tail roller perform the first stage of pressing, and drops the tail roller to the position X calculated by the program. 1 -150mm position; and then when the tail of the strip passes the second position sensor, the controller drives the lifting cylinder to make the tail pressing roller perform the second stage of pressing, and drops the tail pressing roller to the final position and presses the aluminum coil.

[0016] Furthermore, the controller is electrically connected to the host computer so that the actual position and set position of the tail roller can be observed in real time in the host computer, and the set position of the first section of the tail roller can be modified in the host computer according to the actual situation on site. (For example, if 150mm is changed to 100mm, the set position of the first section of the tail roller will become X 1-100mm, at this time, the setting position of the first section of the tail roller will be closer to the aluminum coil.) The present invention can collect the final position of the tail-pressing roller after it falls into place when producing aluminum coils with different coil diameters through the laser ranging sensor installed on the cylinder body of the lifting cylinder, and fit the collected data to obtain an equation for the relationship between the coil diameter and the position of the telescopic rod of the lifting cylinder. Through this equation, the calculated position reached by the tail-pressing roller after it falls can be determined according to aluminum coils with different diameters during the production process. When the aluminum coil is produced to the tail end, the tail-pressing roller is pre-dropped to a preparation position 150 mm away from the calculated position, and before the aluminum coil loses tension, the tail-pressing roller falls to the final position to press the outer layer of the aluminum coil to prevent loose layers, and at the same time effectively reduces the several circles of indentations formed by the tail-pressing roller directly pressing against the surface of the rotating aluminum coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A partial view of Figure 3 It is a control principle block diagram of the present invention; Figure 4 It is to collect the data table of the aluminum coil diameter and the telescopic rod stroke of the lifting cylinder on site; Figure 5 This is the relationship diagram between the diameter of the aluminum coil and the telescopic rod stroke of the lifting cylinder; Figure 6 It is a photo of the appearance of the aluminum coil before the application technology is adopted; Figure 7 This is a photo of the appearance of the aluminum coil after using the technology of this application. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0023] The device for improving the indentation of the tail roller at the tail of a hot-rolled aluminum coil of the present invention comprises a coiler 2 arranged at the outlet of a hot finishing mill 1 for coiling thin aluminum material to form an aluminum coil and a fixed frame 3 arranged above the coil core shaft of the coiler, a tail roller bracket 4 and a tail roller 5 rotatably hinged on the tail roller bracket (the tail roller 5 is a rubber roller or a silicone roller so that the indentation is reduced when the tail roller contacts the surface of the aluminum coil), and a lifting cylinder 6 is fixed on the fixed frame for driving the tail roller bracket to rotate around the fixed frame. The lifting cylinder is an electric push rod or a cylinder or a hydraulic cylinder with controllable telescopic length. Under the drive of the lifting cylinder, its telescopic rod telescopes, thereby driving the tail roller bracket 4 and the tail roller 5 to swing.

[0024] A laser ranging sensor 8 for measuring the movement distance of the telescopic rod 7 and the tail roller bracket 4 driven by the lifting cylinder is fixedly provided on the fixed frame or the lifting cylinder. A laser ranging sensor reflector 10 is installed on the tail roller bracket 4 to reflect the laser emitted by the laser ranging sensor. The laser emitted by the laser ranging sensor 8 is reflected by the reflector 10 and then received by the laser ranging sensor 8, so that the telescopic stroke of the telescopic rod 7 can be obtained. The laser ranging sensor is electrically connected to the controller 9, and the controller is electrically connected to the lifting cylinder to control the movement distance of the telescopic rod, the tail roller bracket and the tail roller driven by the lifting cylinder.

[0025] A first position sensor 11 and a second position sensor 12 are installed near the exit of the production line of the hot finishing mill 1. The first position sensor and the second position sensor are electrically connected to the controller so that when the tail end of the strip passes through the first position sensor and the second position sensor, the controller drives the lifting cylinder to move the tail roller bracket and the tail roller to descend.

[0026] The working method of the device for improving the indentation of the tail roller of the hot-rolled aluminum coil of the present invention is as follows: Step 1: Install a laser distance measuring sensor on the cylinder body of the lifting cylinder to detect the travel of the telescopic rod of the lifting cylinder, and then collect the travel data of the telescopic rod of the lifting cylinder when the tail roller of aluminum coil products with different coil diameters falls to press the aluminum coil; Step 2: Fit the data collected in step 1 to obtain an equation of the aluminum coil diameter and the travel of the telescopic rod of the lifting cylinder. The X axis is the current aluminum coil diameter, and the Y axis is the travel of the telescopic rod of the lifting cylinder when the tail roller falls to the final position (the relationship between the travel (Y) of the telescopic rod driven by the lifting cylinder and the aluminum coil diameter (X) is as follows: Y = -180.27X + 1244.4), and this function is set in the controller. In the production process, the final position X of the tail roller pressing the aluminum coil is calculated in advance according to the aluminum coil with the current coil diameter. 1 ; Step 3: During the production process of the finishing mill, when the tail of the strip passes the first position sensor 11, the controller drives the lifting cylinder to make the tail roller perform the first stage of pressing, and drops the tail roller to the position X calculated by the program. 1 -150mm position; and then when the tail of the strip passes the second position sensor 12, the controller drives the lifting cylinder to make the tail pressure roller perform the second section of pressing, and the tail pressure roller falls to the final position and presses the aluminum coil.

[0027] Specifically, the first position sensor is 50-100 meters or other values ​​away from the exit of the hot finishing rolling mill, and the second position sensor is 10-50 meters or other values ​​away from the exit of the hot finishing rolling mill.

[0028] In order to facilitate control and adjustment, the controller is electrically connected to the host computer 13, so that the actual position and set position of the tail roller can be observed in real time in the host computer, and the set position of the first section of the tail roller can be modified in the host computer according to the actual situation on site. (For example, if 150mm is changed to 100mm, the set position of the first section of the tail roller will become X 1 -100mm, at this time, the setting position of the first section of the tail roller will be closer to the aluminum coil.) Example, Figure 4 Schematic diagram of a specific application example of the present invention, that is, based on the collected data of different aluminum coil diameters and the telescopic rod stroke data of the lifting cylinder when the tail roller presses the aluminum coil, the data is displayed in a coordinate system with the aluminum coil diameter as the X-axis and the telescopic rod stroke as the Y-axis, and then fitted into an inverse proportional function curve; Figure 5 Shown is based on Figure 4 The collected data generates a fitting curve of the tail roller position and coil diameter Y = -180.27X + 1244.4; after completing the tail roller position calculation and the first-stage pressing setting position programming in the controller, the controller can calculate the final position of the tail roller when it presses against the aluminum coil surface according to the coil diameter of the current product, and subtract 150mm from this position as the position setting value of the first stage of the tail roller pressing; taking the aluminum coil product with a coil diameter of 2.1 meters as an example, when the controller receives the coil diameter information of the product, it calculates the stroke of the lifting cylinder at the final position of the tail roller according to the programmed tail roller position equation: -180.27×2.1+1244.4=865.833mm, The setting position of the lifting cylinder against which the tail roller is pressed in the first section is: 865.833-150=715.833mm.

[0029] Figure 6 This is a photo of the appearance of the aluminum coil before the application technology is used. It can be observed that there are obvious indentations on the surface of the aluminum coil. Figure 7 This is a photo of the appearance of the aluminum coil after using the technology of the present application. It can be observed that the indentation is significantly improved.

[0030] The present invention can collect the final position of the tail-pressing roller after it falls into place when producing aluminum coils with different coil diameters through the laser ranging sensor installed on the cylinder body of the lifting cylinder, and fit the collected data to obtain an equation for the relationship between the coil diameter and the position of the telescopic rod of the lifting cylinder. Through this equation, the calculated position reached by the tail-pressing roller after it falls can be determined according to aluminum coils with different diameters during the production process. When the aluminum coil is produced to the tail end, the tail-pressing roller is pre-dropped to a preparation position 150 mm away from the calculated position, and before the aluminum coil loses tension, the tail-pressing roller falls to the final position to press the outer layer of the aluminum coil to prevent loose layers, and at the same time effectively reduces the several circles of indentations formed by the tail-pressing roller directly pressing against the surface of the rotating aluminum coil.

[0031] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for improving the indentation of the tail roller of a hot-rolled aluminum coil, characterized in that: It includes a coiling machine arranged at the outlet of a hot finishing mill for coiling thin aluminum materials to form aluminum coils, and a fixed frame arranged above the coiling core shaft of the coiling machine, a tail roller bracket and a tail roller rotatably hinged on the fixed frame, a lifting cylinder for driving the tail roller bracket to rotate around the fixed frame is fixed on the fixed frame, a laser ranging sensor for measuring the movement distance of the telescopic rod and the tail roller bracket driven by the lifting cylinder is fixed on the fixed frame or the lifting cylinder, the laser ranging sensor is electrically connected to the controller, and the controller is electrically connected to the lifting cylinder to control the movement distance of the telescopic rod, the tail roller bracket and the tail roller driven by the lifting cylinder.

2. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 1 is characterized in that: A laser distance measuring sensor reflector is installed on the tail roller bracket to reflect the laser emitted by the laser distance measuring sensor.

3. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 1 or 2, characterized in that: The lifting cylinder is an electric push rod or a cylinder or a hydraulic cylinder with controllable telescopic length.

4. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 3 is characterized in that: The tail pressing roller is a rubber roller or a silicone roller, so as to reduce the indentation when the tail pressing roller contacts the surface of the aluminum coil.

5. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 4 is characterized in that: The relationship between the travel (Y) of the telescopic rod driven by the lifting cylinder and the diameter (X) of the aluminum coil is as follows: Y = -180.27X + 1244.

4.

6. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 5, characterized in that: A first position sensor and a second position sensor are installed near the exit of the production line of the hot finishing mill. The first position sensor and the second position sensor are electrically connected to the controller so that when the tail end of the strip passes through the first position sensor and the second position sensor, the controller drives the lifting cylinder to move so that the tail pressure roller bracket and the tail pressure roller are lowered.

7. The device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 6, characterized in that: The first position sensor is 50-100 meters away from the exit of the hot finishing rolling mill, and the second position sensor is 10-50 meters away from the exit of the hot finishing rolling mill.

8. A working method of the device for improving the indentation of the tail roller of a hot-rolled aluminum coil according to any one of claims 1 to 7, characterized in that: Step 1: Install a laser distance measuring sensor on the cylinder body of the lifting cylinder to detect the travel of the telescopic rod of the lifting cylinder, and then collect the travel data of the telescopic rod of the lifting cylinder when the tail roller of aluminum coil products with different coil diameters falls to press the aluminum coil; Step 2: Fit the data collected in step 1 to obtain an equation of the diameter of the aluminum coil and the travel of the telescopic rod of the lifting cylinder. The X-axis is used as the current diameter of the aluminum coil, and the Y-axis is used as the travel of the telescopic rod of the lifting cylinder when the tail pressure roller falls to the final position. This function is set in the controller. In the production process, the final position X1 of the tail pressure roller pressing the aluminum coil is calculated in advance according to the aluminum coil with the current coil diameter; Step 3: During the production process of the finishing mill, when the tail of the strip passes the first position sensor, the controller drives the lifting cylinder to make the tail pressure roller perform the first stage of pressing, and drops the tail pressure roller to the position X1-150mm calculated by the program; and then when the tail of the strip passes the second position sensor, the controller drives the lifting cylinder to make the tail pressure roller perform the second stage of pressing, and drops the tail pressure roller to the final position and presses the aluminum coil.

9. The working method of the device for improving the indentation of the tail roller of the hot-rolled aluminum coil according to claim 8 is characterized in that: The controller is electrically connected to the host computer so that the actual position and the set position of the tail roller can be observed in real time in the host computer, and the set position of the first section of the tail roller can be modified in the host computer according to the actual situation on site.

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