Steel billet centering control and width measurement system

Abstract

The embodiment of the utility model provides a billet centering control and width measurement system. The billet centering control and width measurement system comprises a first manipulator and a second manipulator which are oppositely arranged, the first manipulator comprises a first hydraulic cylinder and a first push plate, and the movable end of the first hydraulic cylinder is connected with the first push plate; the second manipulator comprises a second hydraulic cylinder and a second push plate, and the movable end of the second hydraulic cylinder is connected with the second push plate; displacement sensors are arranged in the first hydraulic cylinder and the second hydraulic cylinder; pressure sensors are arranged on the opposite faces of the first push plate and the second push plate. The first hydraulic cylinder and the second hydraulic cylinder drive the first push plate and the second push plate to get close to each other, when the detection results of the two pressure sensors are the same and reach a preset value, accurate centering of the steel billet can be achieved, and then the width of the steel billet is calculated according to the detection result of the displacement sensor and the resolution. Accurate steel billet width data can be obtained, and the cost input is low.

Description

Technical Field

[0001] This application relates to the technical field of steel rolling, and particularly to a billet centering control and width measurement system. Background Art

[0002] Steel plates with a thickness of more than 4 mm are called medium and heavy plates, simply referred to as medium thick plates, and are widely used in shipbuilding, building components, machine manufacturing, transportation, military industry and other departments, as well as for manufacturing large-diameter welded pipes, containers, boilers, etc.

[0003] The production process of medium thick plates generally includes centering, rotary angle adjustment and rolling. Pusher beds are respectively arranged on both sides of the billet conveying line. The billet is moved by the pusher beds to the middle position perpendicular to the conveying direction of the conveying line. Then, after the angle is adjusted by the rotary roller table, it is sent into the rolling rolls. The above process is repeated multiple times until a medium thick plate with a preset size is obtained. With the development of steel rolling automation, in the production process of medium thick plates, the width measurement of billets has gradually become an extremely important link, and the measured width value has become an important parameter for automated production.

[0004] Currently, when measuring the width of billets, image recognition technologies such as photoelectric three-dimensional imaging technology and linear array CCD cameras are mostly used. However, on the one hand, the input cost is relatively high, and on the other hand, with the long-term use of some conveying rollers, the positions of some conveying rollers may shift, and errors may occur during image recognition. Utility Model Content

[0005] The embodiment of this application provides a billet centering control and width measurement system. The first hydraulic cylinder and the second hydraulic cylinder drive the first push plate and the second push plate to approach each other. The detection result of the pressure sensor is used to judge whether the billet is clamped, and then the width of the billet is calculated through the detection result of the displacement sensor, which can solve the problems of high input cost and possible errors in the existing image recognition width technology.

[0006] The embodiment of this application provides a billet centering control and width measurement system, including a first pusher bed and a second pusher bed arranged oppositely;

[0007] The first pusher bed includes a first hydraulic cylinder and a first push plate, and the movable end of the first hydraulic cylinder is connected to the first push plate;

[0008] The second pusher bed includes a second hydraulic cylinder and a second push plate, and the movable end of the second hydraulic cylinder is connected to the second push plate;

[0009] Both the first hydraulic cylinder and the second hydraulic cylinder are internally provided with displacement sensors;

[0010] Pressure sensors are arranged on the opposite surfaces of the first push plate and the second push plate.

[0011] In a feasible implementation, the system further includes a controller;

[0012] The controller is communicatively connected to the first hydraulic cylinder, the second hydraulic cylinder, the displacement sensor, and the pressure sensor.

[0013] In a feasible implementation, the system further includes a display;

[0014] The display is communicatively connected to the controller.

[0015] In a feasible implementation, the controller is a PLC controller.

[0016] In a feasible implementation, the displacement sensor is communicatively connected to the controller through a signal input module.

[0017] In a feasible implementation, the displacement sensor is a magnetic scale displacement sensor.

[0018] In a feasible implementation, the movable ends of the first hydraulic cylinder and the second hydraulic cylinder face away from each other. The movable end of the first hydraulic cylinder is connected to the first push plate through a connecting member, and the movable end of the second hydraulic cylinder is connected to the second push plate through another connecting member.

[0019] A billet centering control and width measurement system provided by an embodiment of the present application drives the first push plate and the second push plate to approach each other through the first hydraulic cylinder and the second hydraulic cylinder, and judges whether the billet is tightly held through the detection results of the pressure sensors. When the detection results of the two pressure sensors are the same and reach a preset value, the precise centering of the billet can be achieved. Then, the width of the billet is calculated through the detection results and resolution of the displacement sensor, and accurate billet width data can be obtained, and the cost investment is low. Calculating the width of the billet through the stroke during the centering process can eliminate the errors caused by reasons such as the offset of the conveying rollers in image recognition. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a billet centering control and width measurement system provided by an embodiment of the present application;

[0021] Figure 2 is along Figure 1 the sectional structural schematic diagram taken along line A-A in

[0022] Figure 3 is a block diagram of a billet centering control and width measurement system provided by an embodiment of the present application.

[0023] Description of the Reference Numerals:

[0024] 100 - First pusher; 200 - Second pusher;

[0025] 110 - First hydraulic cylinder; 120 - First push plate;

[0026] 210 - Second hydraulic cylinder; 220 - Second push plate;

[0027] 300 - Displacement sensor; 400 - Pressure sensor; 500 - Connecting piece. Detailed implementation mode

[0028] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0029] Figure 1 is a schematic structural diagram of a billet centering control and width measurement system provided by an embodiment of this application;

[0030] Figure 2 is along Figure 1 the sectional view structural diagram of line A - A in

[0031] Figure 3 is a module block diagram of a billet centering control and width measurement system provided by an embodiment of this application.

[0032] Referring to Figures 1-3 as shown, an embodiment of this application provides a billet centering control and width measurement system, including a relatively arranged first pusher 100 and a second pusher 200;

[0033] The first pusher 100 includes a first hydraulic cylinder 110 and a first push plate 120, and the movable end of the first hydraulic cylinder 110 is connected to the first push plate 120;

[0034] The second pusher 200 includes a second hydraulic cylinder 210 and a second push plate 220, and the movable end of the second hydraulic cylinder 210 is connected to the second push plate 220;

[0035] In some examples, the movable ends of the first hydraulic cylinder 110 and the second hydraulic cylinder 210 face away from each other. The movable end of the first hydraulic cylinder 110 is connected to the first push plate 120 through a connecting piece 500, and the movable end of the second hydraulic cylinder 210 is connected to the second push plate 220 through another connecting piece 500.

[0036] Both the first hydraulic cylinder 110 and the second hydraulic cylinder 210 are internally provided with displacement sensors 300; in some examples, the displacement sensor 300 can be a magnetic scale displacement sensor, with a measuring range of 0 - 2600 mm, high precision, and can adapt to the environment of the steel rolling site.

[0037] Pressure sensors 400 are arranged on the opposite surfaces of the first push plate 120 and the second push plate 220.

[0038] In the above embodiment, the first pusher 100 and the second pusher 200 are respectively arranged on both sides of the billet conveying line and are symmetrically distributed. The operator issues a centering command to the first hydraulic cylinder 110 and the second hydraulic cylinder 210. The first hydraulic cylinder 110 and the second hydraulic cylinder 210 work and drive the first push plate 120 and the second push plate 220 to approach. When the first push plate 120 and the second push plate 220 contact the billet on the conveying line, the pressure sensor 400 can detect the pressure value. When the detection results of the two pressure sensors 400 are the same and reach the preset value, it indicates that the first push plate 120 and the second push plate 220 have clamped the billet and the centering of the billet is achieved. In addition, the centering control of the pusher can also be realized by combining the real-time data of the displacement sensor 300, and then the width of the billet can be calculated according to the detection result of the displacement sensor 300 to obtain accurate billet width data.

[0039] It should be noted that the calculation formula for calculating the billet width according to the detection result of the displacement sensor 300 is:

[0040] s=(s transducer,x +s offset )*k + s cal (1)

[0041] In formula (1), s is the billet width, s transducer,x is the detection result of the displacement sensor 300, s offset is the compensation value, which is preset according to the actual situation on site to eliminate errors, k is the resolution of the displacement sensor 300, and s cal is the calibrated deviation value.

[0042] s cal =s distance -s -1 (2)

[0043] In formula (2), s distance is the distance between the first push plate 120 / second push plate 220 and the center line, and s -1 is the billet width calculated last time.

[0044] In some examples, the system further includes a controller;

[0045] The controller is communicatively connected to the first hydraulic cylinder 110, the second hydraulic cylinder 210, the displacement sensor 300, and the pressure sensor 400.

[0046] In a feasible implementation manner, the system further includes a display;

[0047] The display is communicatively connected to the controller.

[0048] In a feasible implementation manner, the controller is a PLC controller.

[0049] In a feasible implementation manner, the displacement sensor is communicatively connected to the controller through a signal input module.

[0050] In the above example, communication between the PLC controller and the display is through Ethernet, communication between the signal input module and the PLC controller is through DP, and connection between the displacement sensor 300 and the signal input module is through a signal cable.

[0051] The PLC controller reads in real time the data collected by the displacement sensor 300 and the pressure sensor 400, processes the data and then sends it to the display for display, and the user can view the current data in real time through the display.

[0052] It should be noted that the PLC controller can convert the read data into numerical values or graphs to facilitate the user's more intuitive understanding of the current working process and working data.

[0053] In the above example, the operator issues a centering command through the display. After receiving the centering command, the PLC controller controls the first hydraulic cylinder 110 and the second hydraulic cylinder 210 to work and drive the first push plate 120 and the second push plate 220 to approach. When the first push plate 120 and the second push plate 220 come into contact with the billet on the conveyor line, the pressure sensor 400 can detect the pressure value. When the detection results of the two pressure sensors 400 are the same and reach the preset value, it indicates that the first push plate 120 and the second push plate 220 have clamped the billet and achieved centering of the billet. The PLC controller controls the first hydraulic cylinder 110 and the second hydraulic cylinder 210 to stop working, then reads the detection result of the displacement sensor 300 and calculates the width of the billet based on this detection result, sends the calculation result to the display for display, and finally controls the first hydraulic cylinder 110 and the second hydraulic cylinder 210 to reset.

[0054] The embodiment of the present application provides a steel billet centering control and width measurement system, which can realize the automatic centering of the steel billet and the reset of the first hydraulic cylinder 110 and the second hydraulic cylinder 210, calculate the width of the steel billet after centering, and inform the operator through the display, so as to provide data support for subsequent steel rolling, reduce the operation times of the operator. For a steel rolling production line without a width measurement function, the width reference of the steel billet can be provided for the old production line through simple transformation, with low transformation cost. When calculating the width of the steel billet, it mainly relies on the data of the displacement sensor 300, is less affected by other factors, and can obtain relatively accurate steel billet width data.

[0055] It is easy to understand that those skilled in the art can combine, split, and recombine the embodiments of the present application based on several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0056] The above specific implementation manners further elaborate on the purpose, technical solution, and beneficial effects of the embodiments of the present application. It should be understood that the above is only the specific implementation manners of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A billet centering control and width measurement system, characterized in that: It comprises a first trolley (100) and a second trolley (200) which are arranged opposite to each other; The first push bed (100) comprises a first hydraulic cylinder (110) and a first push plate (120), wherein the movable end of the first hydraulic cylinder (110) is connected to the first push plate (120); The second push bed (200) comprises a second hydraulic cylinder (210) and a second push plate (220), and the movable end of the second hydraulic cylinder (210) is connected to the second push plate (220); The first hydraulic cylinder (110) and the second hydraulic cylinder (210) are both equipped with a displacement sensor (300); Pressure sensors (400) are disposed on the opposing surfaces of the first push plate (120) and the second push plate (220).

2. The billet centering control and width measurement system according to claim 1, characterized in that: The system also includes a controller; The controller is communicatively connected with the first hydraulic cylinder (110), the second hydraulic cylinder (210), the displacement sensor (300), and the pressure sensor (400).

3. The billet centering control and width measurement system according to claim 2, characterized in that: The system also includes a display; The display is communicatively connected to the controller.

4. The billet centering control and width measurement system according to claim 2, characterized in that: The controller is a PLC controller.

5. The billet centering control and width measurement system according to any one of claims 2 to 4, characterized in that: The displacement sensor (300) is communicatively connected to the controller via a signal input module.

6. The billet centering control and width measurement system according to any one of claims 1 to 4, characterized in that: The displacement sensor (300) is a magnetic scale displacement sensor.

7. The billet centering control and width measurement system according to any one of claims 1 to 4, characterized in that: The movable ends of the first hydraulic cylinder (110) and the second hydraulic cylinder (210) are opposite to each other; the movable end of the first hydraulic cylinder (110) is connected to the first push plate (120) via a connecting member (500), and the movable end of the second hydraulic cylinder (210) is connected to the second push plate (220) via another connecting member (500).

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