Method for automatic oiling, smoothing and cleaning of the surface of a ground strip steel

Abstract

This invention discloses an automatic oiling and smoothing cleaning method for the surface of polished steel strip, comprising the following steps: S1, preparation work, threading the steel strip and establishing surface tension; S2, measuring the width of the steel strip; S3, starting the oil spraying pump; S4, starting the oil spraying device, opening the corresponding oil spraying valve according to the width of the steel strip; S5, starting the smoothing cleaning device, using a cylinder to press down the smoothing plate to smooth the surface of the steel strip; S6, ending the oil spraying and smoothing operation. This invention uses a linear function to dynamically adjust the unit speed for different steel strip widths, ensuring production efficiency and product quality for various specifications.

Description

Technical Field

[0001] This invention relates to surface quality inspection technology for cold-rolled strip steel, and more specifically, to a method for automatically applying oil and cleaning the surface of strip steel after grinding. Background Technology

[0002] In steel production, the oiling and cleaning techniques for strip steel surfaces are crucial for maintaining product quality, aiming to enhance rust prevention and processing results. The oiling process involves operators using specialized oil cans and spray guns to evenly spray a carefully selected rust-preventive oil onto the strip steel surface, ensuring the oil has good adhesion, abrasion resistance, and rust-preventive properties. Subsequently, the oil film is carefully spread evenly with an oiling stick, avoiding excessive thickness or thinness to maintain the strip steel surface quality. Oil quantity control is also critical; operators must adjust the oil quantity according to the strip steel material, thickness, and working environment to avoid affecting processing results or rust prevention effectiveness.

[0003] Cleaning the surface of the steel strip is equally crucial. Common methods include using cleaning agents and equipment, or cleaning with rust-preventive oil, to effectively remove impurities and ensure the oiling effect. In summary, oiling and cleaning the steel strip surface are key steps in steel production. Precise oiling and application form a uniform rust-preventive oil film, improving the performance of the steel strip. Simultaneously, ensuring the cleanliness of the steel strip surface is crucial for achieving the desired oiling effect and guaranteeing product quality. However, operators must carefully control the amount of oil and select appropriate rust-preventive oil and cleaning methods to ensure the effective oiling and cleaning of the steel strip surface.

[0004] Existing methods for applying oil and cleaning the surface of polished steel strips are all done manually or by manually controlled equipment, which cannot be automated, thus limiting efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic oiling and cleaning method for the surface of steel strip after grinding. By using a linear function, the speed of the unit can be dynamically adjusted for different widths of steel strip, ensuring production efficiency and product quality for various specifications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for automatically applying and evenly cleaning oil to the surface of a steel strip after grinding includes the following steps:

[0008] S1, Preparation work: Threading the strip and establishing surface tension;

[0009] S2, measure the width of the strip steel;

[0010] S3, activate the fuel injection pump;

[0011] S4, start the oil injection device and open the corresponding oil injection valve according to the width of the strip;

[0012] S5, start the smoothing and cleaning device, and smooth the surface of the strip steel by pressing down the smoothing plate with the cylinder;

[0013] S6, finish the oil spraying and spreading process.

[0014] Preferably, in step S2, after measuring the width of the strip, a linear algorithm is used to control the speed of the unit and adjust it according to the width of the strip. The linear algorithm establishes a linear functional relationship between the width W of the strip and the speed V of the unit.

[0015] When W≤W0, V maintains its maximum speed Vmax;

[0016] When W > W0, a linear function is used to describe the relationship between V and W:

[0017] V = Vmax - k(W - W0)

[0018] Where k is the linear deceleration rate, calculated using Wmax, Vmin, W0, and Wmax:

[0019] k = (Wmax - Vmin) / (Wmax - W0).

[0020] Preferably, the width is measured using an online strip width measurement device, as follows:

[0021] Three sets of cameras are evenly arranged on the unit. The cameras are positioned above the strip steel, and the camera lenses cover the width of the strip steel and overlap for image stitching.

[0022] As the strip passes beneath the cameras, three sets of cameras are activated simultaneously to capture surface images of the strip. Each set of cameras captures an image covering a portion of the strip's width, with overlapping edges.

[0023] The three sets of images are aligned and stitched together using image processing software to form a complete image of the strip width.

[0024] After setting the calibration parameters and determining the camera resolution, the software automatically calculates the pixels at the edge of the strip in the image and converts the pixel distance into the actual strip width.

[0025] Preferably, the actual width of the strip is calculated as follows:

[0026] Set the width of the strip captured by the camera to w pixels;

[0027] Using the previously determined camera resolution p, convert the pixel width to the actual width;

[0028] The actual width W of the strip can be calculated using the following formula:

[0029]

[0030] Where W is the actual width of the strip, w is the strip width measured by image processing software, and p is the actual length represented by each pixel of the camera.

[0031] Preferably, in step S3, the fuel injection pump maintains the pressure inside the fuel injection pipe according to calculations, and automatically adjusts the fuel injection quantity according to the unit speed, strip width, and type, as follows:

[0032] Real-time monitoring of unit speed, strip width, strip type, and current fuel injection volume data;

[0033] The collected data is processed and then further calculations are performed. During data processing, the unit speed, strip width and type data are normalized to make them the same dimension. Then, the injection quantity adjustment parameters are found according to the type and width of the strip.

[0034] Based on the processed data and preset parameters, the adjustment value of the fuel injection quantity is calculated;

[0035] The calculated fuel injection quantity adjustment value is added to the current fuel injection quantity to achieve online adjustment of the fuel injection quantity;

[0036] Calculate the number of fuel injection valves that need to be opened based on the width of the strip.

[0037] The calculated fuel injection quantity and number of fuel injection valves are sent to the actuator to achieve online adjustment of the fuel injection quantity and number of fuel injection valves;

[0038] During the adjustment process, the actual effect of the fuel injection quantity and the number of fuel injection valves is monitored in real time and compared with the expected effect. The adjustment parameters are continuously optimized through manual adjustment or automatic optimization algorithms.

[0039] Preferably, the adjustment value for the fuel injection quantity is calculated using the following formula:

[0040] ΔQ=K*(V*BW)

[0041] Where ΔQ represents the fuel injection quantity adjustment value, K is the adjustment coefficient, V is the unit speed, B is the strip width, and W is the current fuel injection quantity.

[0042] Preferably, the adjusted fuel injection quantity is calculated using the following formula:

[0043] Q_new=Q_old+ΔQ

[0044] Where Q_new represents the adjusted fuel injection amount, and Q_old represents the current fuel injection amount.

[0045] Preferably, the number of times the fuel injection valve opens is calculated using the following formula:

[0046] N = ceil(B / D)

[0047] Where N represents the number of fuel injection valves that need to be opened, B is the width of the strip steel, and D is the coverage width of a single fuel injection valve.

[0048] Preferably, the fuel injection device includes multiple fuel injection units;

[0049] Each of the aforementioned fuel injection units includes a connector, a solenoid valve, and a nozzle;

[0050] The connector is located on the fuel injection manifold, and the solenoid valve controls the fuel injection manifold to supply fuel to the nozzle.

[0051] The corresponding oil injection unit is activated based on the width and position of the strip.

[0052] The present invention provides an automatic oiling and even cleaning method for the surface of a steel strip after grinding, which has the following advantages:

[0053] Beneficial effects:

[0054] 1. This invention can achieve dynamic adjustment of the unit speed under different strip widths through a linear function, ensuring production efficiency and product quality under various specifications. The algorithm is simple to set and takes into account the characteristics of the problem itself, and has good practicality.

[0055] 2. The online strip width measurement method based on image stitching of this invention can provide accurate width data in real time, which helps to monitor and adjust the production process, improve product quality, and achieve high-precision width measurement by integrating advanced image processing technology, providing important data support for strip production;

[0056] 3. This invention can realize online adaptive oil injection quantity adjustment. The method can automatically adjust the oil injection quantity according to the unit speed, strip width and type to improve the oil coating effect on the strip surface and optimize the production process. Attached Figure Description

[0057] Figure 1 This is a flowchart illustrating the automatic oiling and cleaning method for the strip surface after grinding according to the present invention. Detailed Implementation

[0058] To better understand the above-mentioned technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0059] Combination Figure 1 As shown, the present invention provides an automatic oiling and even cleaning method for the surface of a steel strip after grinding, comprising the following steps:

[0060] S1, Preparation: Thread the strip and establish surface tension. At this time, start the production line and run it at low speed.

[0061] S2, Measure the width of the strip steel by using a width measuring device;

[0062] In this embodiment, after detecting the strip width, a linear algorithm is used to control the unit speed, and adjustments are made according to the strip width. This linear algorithm establishes a linear functional relationship between the strip width W and the unit speed V.

[0063] When W≤W0, V maintains its maximum speed Vmax;

[0064] When W > W0, a linear function is used to describe the relationship between V and W:

[0065] V = Vmax - k(W - W0)

[0066] Where k is the linear deceleration rate, calculated using Vmax, Vmin (minimum speed of the unit), W0, and Wmax (maximum width of the strip):

[0067] k = (Vmax - Vmin) / (Wmax - W0).

[0068] Specifically, the current strip width W is read, and it is determined whether W is greater than the critical width W0. If it is greater, the corresponding speed V is calculated according to the above formula; otherwise, V is kept at the maximum speed Vmax, and a control command is output to set the unit operating speed V.

[0069] Understandably, the linear function described above can be used to dynamically adjust the speed of the unit under different strip widths, ensuring production efficiency and product quality for various specifications. The algorithm is simple to set and takes into account the characteristics of the problem itself, making it highly practical.

[0070] Furthermore, the width measuring device uses an online strip width measurement method, which involves integrating multiple cameras to capture and stitch together images, and then calculating the strip width by measuring pixels. The specific steps are as follows:

[0071] Three sets of high-resolution cameras are evenly arranged on the strip steel production line. The cameras are positioned above the strip steel to fully cover the width of the strip steel and are overlapped for image stitching.

[0072] As the strip passes beneath the cameras, three sets of cameras activate simultaneously to capture high-resolution images of the strip's surface. Each set of cameras captures an image covering a portion of the strip's width, with overlapping edges.

[0073] The three sets of images are aligned and stitched together using image processing software. Feature point matching technology in the overlapping areas is used to accurately stitch them together to form a complete image of the strip width.

[0074] Set the calibration parameters, determine the camera resolution, and use software to automatically calculate the pixels of the strip edge in the image, and convert the pixel distance into the actual strip width;

[0075] The actual strip width is calculated as follows:

[0076] Set the width of the strip captured by the camera to w pixels;

[0077] Using the previously determined camera resolution p, convert the pixel width to the actual width;

[0078] The actual width W of the strip can be calculated using the following formula:

[0079]

[0080] Where W is the actual width of the strip, w is the strip width measured by image processing software, and p is the actual length represented by each pixel of the camera.

[0081] Understandably, the above-mentioned online strip width measurement method based on image stitching can provide accurate width data in real time, which helps to monitor and adjust the production process, improve product quality, and achieve high-precision width measurement by integrating advanced image processing technology, providing important data support for strip production.

[0082] S3, turn on the fuel injection pump, ensure the pipeline is full of rust-preventive oil, and maintain pipeline pressure;

[0083] S4, start the fuel injection device, open the corresponding fuel injection valve according to the width of the strip, and at the same time the fuel injection pump maintains the pressure in the pipeline according to the calculation;

[0084] The fuel injection system includes multiple fuel injection units;

[0085] Each fuel injection unit includes a connector, a solenoid valve, and a nozzle;

[0086] The connector is located on the fuel injection manifold, and the solenoid valve controls the fuel injection manifold to supply fuel to the nozzles.

[0087] The corresponding oil injection unit is activated based on the width and position of the strip.

[0088] The fuel injection pump maintains the pressure inside the fuel injection pipe based on calculations, and automatically adjusts the fuel injection quantity according to the unit speed, strip width, and type, as follows:

[0089] Real-time monitoring of unit speed, strip width, strip type, and current fuel injection volume data;

[0090] The collected data is processed and then further calculations are performed. During data processing, the unit speed, strip width and type data are normalized to make them the same dimension. Then, the injection quantity adjustment parameters are found according to the type and width of the strip.

[0091] Based on the processed data and preset parameters, the adjustment value of the fuel injection quantity is calculated;

[0092] The specific formula for calculating the adjustment value of the fuel injection quantity is as follows:

[0093] ΔQ=K*(V*BW)

[0094] Where ΔQ represents the fuel injection quantity adjustment value, K is the adjustment coefficient, V is the unit speed, B is the strip width, and W is the current fuel injection quantity.

[0095] The calculated fuel injection quantity adjustment value is added to the current fuel injection quantity to achieve online adjustment of the fuel injection quantity;

[0096] The adjusted fuel injection quantity is calculated using the following formula:

[0097] Q_new=Q_old+ΔQ

[0098] Where Q_new represents the adjusted fuel injection amount, and Q_old represents the current fuel injection amount.

[0099] Calculate the number of fuel injection valves that need to be opened based on the width of the strip.

[0100] The formula for calculating the number of times the fuel injection valve opens is as follows:

[0101] N = ceil(B / D)

[0102] Where N represents the number of fuel injection valves that need to be opened, B is the width of the strip steel, and D is the coverage width of a single fuel injection valve.

[0103] The calculated fuel injection quantity and number of fuel injection valves are sent to the actuator to achieve online adjustment of the fuel injection quantity and number of fuel injection valves;

[0104] During the adjustment process, the actual effect of the fuel injection quantity and the number of fuel injection valves is monitored in real time and compared with the expected effect. The adjustment parameters are continuously optimized through manual adjustment or automatic optimization algorithms.

[0105] Understandably, through the above process and calculation formula, online adaptive oil injection quantity adjustment can be achieved. This method can automatically adjust the oil injection quantity according to the unit speed, strip width and type to improve the oil coating effect on the strip surface and optimize the production process.

[0106] S5, start the smearing and cleaning device. The cylinder presses down the smearing plate to smear the surface of the strip steel. At the same time, the zinc powder and impurities on the surface of the strip steel will be adsorbed onto the smearing device, and the surface of the strip steel can be cleaned.

[0107] S6, the oil spraying and spreading operation ends. The length is calculated based on the unit speed. When the length is completed, the oil injection pump and oil injection device are automatically shut off and the spreading device is lifted.

[0108] In summary, this invention enables online adaptive oil spraying volume adjustment, which can automatically adjust the oil spraying volume according to the unit speed, strip width and type to improve the oiling effect on the strip surface, optimize the production process, and utilize an oiling and spreading device for online surface treatment of the strip, thereby timely spraying and spreading oil on the strip surface and improving the quality of the strip products.

[0109] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A method for automatically applying and evenly cleaning oil to the surface of a steel strip after grinding, characterized in that, Includes the following steps: S1, Preparation work: Threading the strip and establishing surface tension; S2, measure the width of the strip steel; S3, activate the fuel injection pump; S4, start the oil injection device and open the corresponding oil injection valve according to the width of the strip; S5, start the smoothing and cleaning device, and use the cylinder to press down the smoothing plate to smooth the surface of the strip steel. S6, finish the oil spraying and spreading process.

2. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 1, characterized in that, In step S2, after measuring the width of the strip, a linear algorithm is used to control the speed of the unit and adjust it according to the width of the strip. This linear algorithm establishes a linear functional relationship between the width W of the strip and the speed V of the unit. When W≤W0, V maintains its maximum speed Vmax; When W > W0, a linear function is used to describe the relationship between V and W: V = Vmax - k(W - W0) Where k is the linear deceleration rate, calculated from Vmax, Vmin, W0, and Wmax: k = (Vmax - Vmin) / (Wmax - W0) 3. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 2, characterized in that, The width is measured using an online strip steel width measurement device, as detailed below: Three sets of cameras are evenly arranged on the unit. The cameras are positioned above the strip steel, and the camera lenses cover the width of the strip steel and are overlapped for image stitching. As the strip passes beneath the cameras, three sets of cameras are activated simultaneously to capture surface images of the strip. Each set of cameras captures an image covering a portion of the strip's width, with overlapping edges. The three sets of images are aligned and stitched together using image processing software to form a complete image of the strip width. After setting the calibration parameters and determining the camera resolution, the software automatically calculates the pixels at the edge of the strip in the image and converts the pixel distance into the actual strip width.

4. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 3, characterized in that, The actual width of the strip is calculated as follows: Set the width of the strip captured by the camera to w pixels; Using the previously determined camera resolution p, convert the pixel width to the actual width; The actual width W of the strip can be calculated using the following formula: Where W is the actual width of the strip, w is the strip width measured by image processing software, and p is the actual length represented by each pixel of the camera.

5. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 1, characterized in that, In step S3, the fuel injection pump maintains the pressure inside the fuel injection pipe according to calculations, and automatically adjusts the fuel injection quantity according to the unit speed, strip width, and type, as follows: Real-time monitoring of unit speed, strip width, strip type, and current fuel injection volume data; The collected data is processed and then further calculations are performed. During data processing, the unit speed, strip width and type data are normalized to make them the same dimension. Then, the injection quantity adjustment parameters are found according to the type and width of the strip. Based on the processed data and preset parameters, the adjustment value of the fuel injection quantity is calculated; The calculated fuel injection quantity adjustment value is added to the current fuel injection quantity to achieve online adjustment of the fuel injection quantity; Calculate the number of fuel injection valves that need to be opened based on the width of the strip. The calculated fuel injection quantity and number of fuel injection valves are sent to the actuator to achieve online adjustment of the fuel injection quantity and number of fuel injection valves; During the adjustment process, the actual effect of the fuel injection quantity and the number of fuel injection valves is monitored in real time and compared with the expected effect. The adjustment parameters are continuously optimized through manual adjustment or automatic optimization algorithms.

6. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 5, characterized in that, The specific formula for calculating the adjustment value of the fuel injection quantity is as follows: ΔQ=K*(V*BW) Where ΔQ represents the fuel injection quantity adjustment value, K is the adjustment coefficient, V is the unit speed, B is the strip width, and W is the current fuel injection quantity.

7. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 5, characterized in that, The adjusted fuel injection quantity is calculated using the following formula: Q_new=Q_old+ΔQ Where Q_new represents the adjusted fuel injection amount, and Q_old represents the current fuel injection amount.

8. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 5, characterized in that, The specific formula for calculating the number of times the fuel injection valve opens is as follows: N = ceil(B / D) Where N represents the number of fuel injection valves that need to be opened, B is the width of the strip steel, and D is the coverage width of a single fuel injection valve.

9. The method for automatically applying and evenly cleaning the surface of the steel strip after grinding according to claim 1, characterized in that: The fuel injection device includes multiple fuel injection units; Each of the aforementioned fuel injection units includes a connector, a solenoid valve, and a nozzle; The connector is located on the fuel injection manifold, and the solenoid valve controls the fuel injection manifold to supply fuel to the nozzle. The corresponding oil injection unit is activated based on the width and position of the strip.

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