Improvement device for tail end roll indentation of hot-rolled aluminum coil and working method

Abstract

The present application relates to a kind of hot-rolled aluminum coil tail end tail roller indentation improving device and working method, wherein hot-rolled aluminum coil tail end tail roller indentation improving device includes the winding machine for curling thin aluminum material to form aluminum coil being arranged at the outlet of hot finishing mill and the fixed frame being arranged above the winding core shaft of winding machine, the fixed frame is rotatably connected with the tail roller support and the tail roller rotatably connected on the tail roller support, lifting cylinder for driving the rotation of tail roller support around fixed frame is fixedly arranged on the fixed frame, laser ranging sensor for measuring the movement distance of lifting cylinder driving its telescopic rod and tail roller support is fixedly arranged on the fixed frame or lifting cylinder, the laser ranging sensor is electrically connected with controller, controller is electrically connected with lifting cylinder to control the movement distance of lifting cylinder driving telescopic rod, tail roller support and tail roller.This device and working method can improve the indentation of aluminum coil tail end and better promote product yield to reduce production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the tail end indentation improvement technology of aluminum coil, in particular to a hot-rolled aluminum coil tail end indentation improvement device and working method. BACKGROUND

[0002] With the development of aluminum processing industry, the market requirements for the quality of aluminum hot-rolled products are continuously improved. The hot finishing mill is the last station of aluminum hot-rolling, which is responsible for rolling the aluminum plate in hot state to a thinner thickness and using a winding machine to curl the aluminum coil at the outlet area of the finishing mill. When the aluminum coil is rolled at the tail end, the aluminum coil tail end will be thrown outwards due to centrifugal force on the winding core shaft of the winding machine because the aluminum coil rotates at a high speed and the strip loses tension. In order to prevent the aluminum coil tail end from colliding with the equipment, it is necessary to lower the tail end roller to the outermost layer of the aluminum coil to press the aluminum coil and rotate with the aluminum coil before the aluminum coil is produced to the tail end losing tension.

[0003] Due to different production batches, the diameters of the aluminum coils are not the same. At this time, it is necessary to manually adjust the tail end roller pressing stroke according to the diameter of the aluminum coil before production by relying on experience. Since manual adjustment is adopted and experience is relied on, the setting of the tail end roller pressing stroke is not reasonable, and the stroke is directly pressed in place when the aluminum coil tail section is a few turns. The aluminum coil tail section is rotated relative to the tail end roller. When the tail end roller pressure is large, indentation will be formed on the surface of the aluminum coil tail section, affecting the quality of the finished product. In order to ensure product quality, the part of the aluminum coil surface with indentation will be cut off in subsequent processing steps, resulting in waste. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a hot-rolled aluminum coil tail end indentation improvement device and working method, which can improve the indentation of the aluminum coil tail end and better improve the product yield to reduce production cost.

[0005] The hot-rolled aluminum coil tail end indentation improvement device of the present application is characterized by comprising a winding machine provided at the outlet of the hot finishing mill for winding thin aluminum material to form an aluminum coil and a fixed frame provided above the winding core shaft of the winding machine. The tail end roller support and the tail end roller rotatingly connected to the tail end roller support are connected to the fixed frame. The lifting cylinder driving the tail end roller support to rotate around the fixed frame is fixedly arranged on the fixed frame. The laser ranging sensor for measuring the movement distance of the lifting cylinder driving the telescopic rod and the tail end roller support is fixedly arranged 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 lifting cylinder driving the telescopic rod, the tail end roller support and the tail end roller.

[0006] Further, the laser ranging sensor reflector plate is mounted on the tail end roller support to reflect the laser emitted by the laser ranging sensor.

[0007] Further, the lifting cylinder is an electric push rod or a cylinder with controllable length.

[0008] Further, the tail pressing roller is a rubber roller or a silica gel roller to reduce the indentation when the tail pressing roller contacts the surface of the aluminum coil.

[0009] Further, the stroke (Y) of the lifting cylinder driving the telescopic rod to extend or retract is related to the diameter (X) of the aluminum coil as follows: Y = -180.27X + 1244.4.

[0010] Further, the first position sensor and the second position sensor are installed on the production line of the hot finishing mill near the outlet, and both are electrically connected to the controller to drive the lifting cylinder to act when the tail end of the strip passes through the first position sensor and the second position sensor.

[0011] Further, the first position sensor is 50-100 meters away from the outlet of the hot finishing mill, and the second position sensor is 10-50 meters away from the outlet of the hot finishing mill.

[0012] The working method of the tail end tail pressing roller indentation improvement device for hot-rolled aluminum coil is characterized by:

[0013] Step 1: install a laser distance sensor on the cylinder body of the lifting cylinder to detect the stroke of the telescopic rod of the lifting cylinder, and then collect the stroke data of the telescopic rod of the lifting cylinder when the tail pressing roller of the aluminum coil product with different diameters falls to press the aluminum coil.

[0014] Step 2: fit the data collected in step 1 to obtain an aluminum coil diameter and lifting cylinder telescopic rod stroke equation, use the X-axis as the current aluminum coil diameter, the Y-axis as the stroke of the telescopic rod of the lifting cylinder when the tail pressing roller falls to the final position, and complete the setting in the controller, and calculate the final position X1 of the tail pressing roller pressing the aluminum coil in advance according to the current coil diameter of the aluminum coil during production.

[0015] Step 3: during the production of the finishing mill, when the tail end of the strip passes through the first position sensor, the controller drives the lifting cylinder to make the tail pressing roller perform the first segment pressing, and the tail pressing roller falls to the position X1-150mm calculated by the program; then when the tail end of the strip passes through the second position sensor, the controller drives the lifting cylinder to make the tail pressing roller perform the second segment pressing, and the tail pressing roller falls to the final position and presses the aluminum coil.

[0016] Further, the controller is electrically connected with the host computer, so that the actual position and the set position of the tail-pressing roller can be observed in the host computer in real time, and the set position of the first section of the tail-pressing roller can be modified in the host computer according to the actual situation on site (for example, the set position of the first section of the tail-pressing roller is changed from 150 mm to 100 mm, so that the set position of the first section of the tail-pressing roller is X1-100 mm, and the set position of the first section of the tail-pressing roller is closer to the aluminum roll).

[0017] The laser ranging sensor installed on the lifting cylinder body can collect the final position of the tail-pressing roller after falling to the position during production of aluminum rolls with different diameters, and the equation of the relationship between the roll diameter and the position of the telescopic rod of the lifting cylinder is obtained by fitting the collected data. According to the calculated position reached by the tail-pressing roller after falling during production of aluminum rolls with different diameters, the tail-pressing roller is lowered to the preparation position 150 mm away from the calculated position in advance when the aluminum roll is produced to the tail end, and the tail-pressing roller is lowered to the final position to press the outer layer of the aluminum roll tightly before the aluminum roll is lost in tension, thereby effectively reducing the several circles of indentation formed by the tail-pressing roller directly pressing on the surface of the rotating aluminum roll. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the structure of the present application;

[0019] Figure 2 is a partial view of Figure 1 ;

[0020] Figure 3 is a control principle block diagram of the present application;

[0021] Figure 4 is a table of collected data of the aluminum roll diameter and the stroke of the telescopic rod of the lifting cylinder on site;

[0022] Figure 5 is a relationship diagram of the aluminum roll diameter and the stroke of the telescopic rod of the lifting cylinder;

[0023] Figure 6 is a photo of the appearance of the aluminum roll before the technology of the present application is adopted;

[0024] Figure 7 is a photo of the appearance of the aluminum roll after the technology of the present application is adopted. DETAILED DESCRIPTION

[0025] The present application will be further described below in combination with the drawings and examples.

[0026] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0027] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application; as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components, and / or combinations thereof.

[0028] The tail end press roll indentation improving device for hot-rolled aluminum coil comprises a coiling machine 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 core shaft of the coiling machine, a press tail roller support 4 is rotatably connected to the fixed frame, and a press tail roller 5 is rotatably connected to the press tail roller support, the press tail roller 5 is a rubber roller or a silica gel roller to reduce indentation when the press tail roller contacts the surface of the aluminum coil, a lifting cylinder 6 is fixedly arranged on the fixed frame to drive the press tail roller support to rotate around the fixed frame, the lifting cylinder is an electric push rod or a gas cylinder or a hydraulic cylinder with controllable extension length, and under the drive of the lifting cylinder, the extension rod of the lifting cylinder extends and retracts to drive the press tail roller support 4 and the press tail roller 5 to swing.

[0029] A laser ranging sensor 8 is fixedly arranged on the fixed frame or the lifting cylinder to measure the movement distance of the extension rod 7 of the lifting cylinder and the press tail roller support 4, and a laser ranging sensor reflector 10 is installed on the press tail roller support 4 to reflect the laser emitted by the laser ranging sensor, and the laser emitted by the laser ranging sensor 8 is reflected by the laser ranging sensor reflector 10 and then received by the laser ranging sensor 8, so that the extension stroke of the extension rod 7 can be obtained, the laser ranging sensor is electrically connected to a controller 9, and the controller is electrically connected to the lifting cylinder to control the movement distance of the extension rod, the press tail roller support and the press tail roller driven by the lifting cylinder.

[0030] A first position sensor 11 and a second position sensor 12 are arranged on the production line of the hot finishing mill 1 near the outlet, and the first position sensor and the second position sensor are electrically connected to the controller to drive the lifting cylinder to move when the tail end of the strip passes through the first position sensor and the second position sensor, so that the press tail roller support and the press tail roller are lowered.

[0031] The working method of the tail end press roll indentation improving device for hot-rolled aluminum coil,

[0032] Step 1: install a laser ranging sensor on the cylinder body of the lifting cylinder to detect the stroke of the extension rod of the lifting cylinder, and then collect the stroke data of the extension rod of the lifting cylinder when the press tail roller falls to press the aluminum coil for producing aluminum coil products with different diameters;

[0033] Step 2: Fit the data collected in Step 1 to obtain a stroke equation for the aluminum coil diameter and the extension rod of the lifting cylinder. Use the X-axis as the current aluminum coil diameter and the Y-axis as the stroke of the extension rod of the lifting cylinder when the tail roller falls to the final position (the relationship between the stroke (Y) of the lifting cylinder driving its extension rod and the aluminum coil diameter (X) is as follows: Y = -180.27X + 1244.4). Set this function in the controller and calculate the final position X1 of the tail roller pressing the aluminum coil in advance based on the current coil diameter during the production process.

[0034] 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 lowers the tail roller to the position X1-150mm calculated by the program; then when the tail of the strip passes the second position sensor 12, the controller drives the lifting cylinder to make the tail roller perform the second stage of pressing, and lowers the tail roller to the final position and presses the aluminum coil.

[0035] Specifically, the first position sensor is located 50-100 meters or other values ​​away from the exit of the hot finishing mill, and the second position sensor is located 10-50 meters or other values ​​away from the exit of the hot finishing mill.

[0036] For convenient control and adjustment, the controller is electrically connected to the host computer 13, allowing real-time observation of the actual and set positions of the tail roller. The host computer can also modify the set position of the first section of the tail roller's contact point based on actual site conditions. (For example, changing 150mm to 100mm will change the set position of the first section of the tail roller's contact point to X1-100mm, bringing it closer to the aluminum coil.)

[0037] Example, Figure 4 This is a schematic diagram illustrating a specific application example of the present invention. Based on collected data on different aluminum coil diameters and the travel data of the telescopic rod 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 travel as the Y-axis, and then fitted into an inverse proportional function curve; for example... Figure 5 The following is based on Figure 4 The collected data generates a fitting curve Y = -180.27X + 1244.4 for the tail roller position and coil diameter. After the tail roller position calculation and the first-stage pressing position setting are programmed in the controller, the controller can calculate the final position of the tail roller when it presses against the aluminum coil surface based on the current product's coil diameter, and subtract 150mm from this position as the first-stage pressing position setting value for the tail roller. Taking an aluminum coil product with a coil diameter of 2.1 meters as an example, after the controller receives the product's coil diameter information, it calculates the stroke of the lifting cylinder at the final position of the tail roller based on the programmed tail roller position equation: -180.27×2.1+1244.4=865.833mm.

[0038] And the first section of the tail roller pressing against the lifting cylinder set position is: 865.833-150=715.833mm.

[0039] Figure 6 It is the photo of the appearance of the aluminum roll before adopting the technology of the application, and it can be observed that there are obvious indentations on the surface of the aluminum roll, Figure 7 It is the photo of the appearance of the aluminum roll after adopting the technology of the application, and it can be observed that the indentations are obviously improved.

[0040] The application can collect the final position of the tail roller after falling to the position by installing the laser ranging sensor on the cylinder body of the lifting cylinder when producing different roll diameters of the aluminum roll, fit the equation of the relationship between the roll diameter and the telescopic rod position of the lifting cylinder through the collected data, and calculate the position reached by the tail roller after falling to the position according to different diameters of the aluminum roll in the production process. When the aluminum roll is produced to the tail end, the tail roller falls to the preparation position 150mm away from the calculated position in advance, and the tail roller falls to the final position before the aluminum roll is lost in tension to press the outer layer of the aluminum roll and prevent the loose layer, and effectively reduce the several circle indentations formed by the tail roller directly pressing on the surface of the rotating aluminum roll.

[0041] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that the persons skilled in the art can well understand and utilize the application. The application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A device for improving the indentation of the tail roll of a hot-rolled aluminum coil, characterized in that: The system includes a winding machine located at the exit of a hot finishing mill for coiling thin aluminum material into aluminum coils, and a fixed frame located above the coil core shaft of the winding machine. A tail roller support and a tail roller, both hinged to the fixed frame, are rotatably connected. A lifting cylinder, which drives the tail roller support to rotate around the fixed frame, is fixedly mounted on the fixed frame. A laser rangefinder sensor, used to measure the distance traveled by the lifting cylinder's telescopic rod and the tail roller support, is fixedly mounted on the fixed frame or the lifting cylinder. The laser rangefinder sensor is electrically connected to a controller, which is in turn electrically connected to the lifting cylinder to control the travel distance of the telescopic rod, the tail roller support, and the tail roller. The relationship between the stroke Y of the telescopic rod driven by the lifting cylinder and the aluminum coil diameter X is as follows: Y = -180.27X + 1244.4; A first position sensor and a second position sensor are installed near the exit of the hot finishing mill production line. Both the first position sensor and the second position sensor are electrically connected to the controller. 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. Then, when the tail of the strip passes the second position sensor, the controller drives the lifting cylinder to make the tail roller perform the second stage of pressing, lowering the tail roller to the final position and pressing the aluminum coil.

2. The device for improving the indentation of the tail roll of hot-rolled aluminum coil according to claim 1, characterized in that: A reflector for a laser rangefinder sensor is mounted on the tail roller support to reflect the laser emitted by the laser rangefinder sensor.

3. The device for improving the indentation of the tail roll of hot-rolled aluminum coil according to claim 1 or 2, characterized in that: The lifting cylinder is an electric actuator or a pneumatic or hydraulic cylinder with controllable extension and retraction length.

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

5. The device for improving the indentation of the tail roll of hot-rolled aluminum coil according to claim 1, characterized in that: The first position sensor is located 50-100 meters from the exit of the hot finishing mill, and the second position sensor is located 10 meters from the exit of the hot finishing mill.

6. A method for operating a device for improving the indentation of the tail-end pressure roller of a hot-rolled aluminum coil, wherein the device for improving the indentation of the tail-end pressure roller of a hot-rolled aluminum coil is as described in any one of claims 1-5, characterized in that: Step 1: Install a laser rangefinder on the cylinder body of the lifting cylinder to detect the stroke of the extension rod of the lifting cylinder, and then collect the stroke data of the extension rod of the lifting cylinder when the tail roller of the aluminum coil product with different diameters falls to press the aluminum coil. Step 2: Fit the data collected in Step 1 to obtain a stroke equation of aluminum coil diameter and lifting cylinder telescopic rod. Use X as the current aluminum coil diameter and Y as the stroke of lifting cylinder telescopic rod when the tail roller falls to the final position. Set this function in the controller and calculate the final position X1 of tail roller pressing aluminum coil in advance based on the current coil diameter during the production process. 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 lower the tail roller to the position X1-150mm calculated by the program; then when the tail of the strip passes the second position sensor, the controller drives the lifting cylinder to make the tail roller perform the second stage of pressing, and lower the tail roller to the final position and press the aluminum coil.

7. The working method of the hot-rolled aluminum coil tail-end indentation improvement device according to claim 6, characterized in that: 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. At the same time, 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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