A control method and system for avoiding a finished product rolling piece from impacting a motion device

Abstract

The application discloses a control method for avoiding finished product rolling piece from impacting action equipment, relates to the technical field of steel production, and solves the technical problem that the existing cooling bed cannot be adjusted online when the head of the rolling piece impacts the rack. The method is characterized in that: a high-speed interval and a low-speed interval of the cooling bed are set, and a high-speed average value of the high-speed interval and a low-speed average value of the low-speed interval are set; a high-position detection point and a low-position detection point of the cooling bed are set; a real-time position of the rolling piece is acquired; if a rolling piece position signal is lost or superimposed, it is determined according to the real-time position whether the rolling piece is in the high-speed interval or the low-speed interval of the cooling bed. The application further discloses a control system for avoiding finished product rolling piece from impacting action equipment. The application can reduce the labor intensity and safety risk of post personnel, improve the processing efficiency of the cooling bed, reduce the failure rate of the equipment, and reduce the cost of spare parts.

Description

Technical Field

[0001] This invention relates to the field of steel production technology, and more specifically, to a control method and system for avoiding impact on the rolling mill of finished products. Background Technology

[0002] In the daily rolling process of steel rolling mills, a common problem arises where the head of the finished bar stock collides with the moving rack after entering the cooling bed, leading to bending of the stock. Current technology cannot address this issue online, resulting in numerous defective products due to bending. Therefore, existing technology has significant drawbacks and limitations.

[0003] These significant drawbacks and defects manifest themselves in the following ways: First, existing technology cannot address the issue of finished bar stock colliding with the moving rack after entering the cooling bed, leading to stock bending. This results in irregularly bent scrap during rolling, significantly reducing yield and drastically increasing production costs per ton of steel. Second, the need to stop the machine in the scrap collection area reduces rolling efficiency and output. Third, the inability to adjust finished bar stock online after entering the cooling bed causes the head to collide with the moving rack, resulting in stock bending and cumulative deterioration of the moving rack, affecting equipment lifespan and ultimately increasing spare parts costs. Fourth, the disassembly and replacement of spare parts significantly increases the workload and safety risks for personnel. The fifth aspect is that the large amount of bent scrap steel on the cooling bed can lead to a cumulative disorder of finished rolled products. Due to the high temperature on the cooling bed, there is a great safety risk for personnel when handling them. Existing technology will bring a great safety risk to the production rolling site. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a control method and system for avoiding impact of finished rolled products on the action equipment, in order to address the shortcomings of the prior art and solve the technical problem that existing cooling beds cannot be adjusted online when the head of the rolled product hits the moving rack.

[0005] The present invention discloses a control method for avoiding impact on the rolling mill of finished products. The method comprises:

[0006] Set the high-speed range and low-speed range of the cooling bed, and set the high-speed average value of the high-speed range and the low-speed average value of the low-speed range.

[0007] Set up high-level and low-level detection points for the cooling bed;

[0008] The real-time position of the rolled piece is obtained. If the position signal of the rolled piece is missing or superimposed, it is determined whether the rolled piece is in the high-speed range or low-speed range of the cooling bed based on the real-time position. If the rolled piece is in the high-speed range, the high-speed offset time of the rolled piece is obtained by using the high-speed average value and the running parameters of the rolled piece, and the total running time of the rolled piece in the high-speed range is corrected. Otherwise, the low-speed offset time of the rolled piece is obtained by using the low-speed average value and the running parameters of the rolled piece, and the total running time of the rolled piece in the low-speed range is corrected.

[0009] To further improve the process, the high-speed offset time is obtained using the following formula:

[0010]

[0011] Wherein, T1 is the high-speed offset time, T2 is the time taken for the workpiece to move from the high-speed zone to its real-time position, S is the moving distance of the workpiece, V0 is the high-speed average value of the cooling bed, and V1 is the real-time speed of the workpiece.

[0012] Furthermore, the low-speed offset time is obtained using the following formula:

[0013]

[0014] Wherein, T4 is the low-speed offset time, T3 is the time taken for the workpiece to move from the low-speed range to its real-time position, S is the moving distance of the workpiece, V2 is the average low-speed value of the cooling bed, and V1 is the real-time speed of the workpiece.

[0015] Furthermore, the position signal of each rolled piece on the cooling bed is obtained through image recognition.

[0016] Furthermore, the speed of the cooling bed is obtained through a speed sensor.

[0017] Furthermore, the signals from both the high-level and low-level detection points of the cooling bed are acquired via limit switches.

[0018] A control system for avoiding impacts between finished rolled pieces and moving equipment, the system comprising a controller, a cooling bed drive module, and a rolled piece signal acquisition module; the controller uses the control method described in any one of the above to control the cooling bed drive module and the rolled piece signal acquisition module to convey the rolled piece.

[0019] Beneficial effects

[0020] The advantages of this invention are:

[0021] This invention achieves control over the position of the rolled piece by setting the average high and low speed values ​​of the cooling bed, and setting high and low detection points on the cooling bed; it acquires the position signal of each rolled piece on the cooling bed, and if the position signal of the rolled piece is missing or superimposed, it corrects it by analyzing the offset time of the rolled piece; thereby realizing the acquisition of real-time information on the collision and bending of the rolled piece, reducing the labor intensity and safety risks of the personnel, improving the efficiency of the cooling bed processing, reducing the equipment failure rate, and reducing spare parts costs. Attached Figure Description

[0022] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0024] See Figure 1 The present invention discloses a control method and system for avoiding impact on the rolling mill of finished products. The method is as follows:

[0025] Set the high-speed and low-speed ranges for the cooling bed, and set the high-speed average value for the high-speed range and the low-speed average value for the low-speed range.

[0026] Set up high-level and low-level detection points for the cooling bed.

[0027] The real-time position of the rolled piece is obtained. If the position signal is missing or superimposed, it is determined whether the rolled piece is in the high-speed or low-speed range of the cooling bed based on the real-time position. If the rolled piece is in the high-speed range, the high-speed offset time of the rolled piece is obtained by using the high-speed average value and the running parameters of the rolled piece, and the total running time of the rolled piece in the high-speed range is corrected. The high-speed offset time is obtained by the following formula.

[0028]

[0029] Where T1 is the high-speed offset time, T2 is the time taken for the rolled piece to move from its entry into the high-speed zone to its real-time position, S is the moving distance of the rolled piece, V0 is the average high-speed speed of the cooling bed, and V1 is the real-time speed of the rolled piece. From the above formula, it can be seen that lowering the average high-speed speed V0 of the cooling bed prolongs the high-speed offset time, and the transport time of the rolled piece will also be correspondingly extended, allowing for the screening of overlapping rolled piece positions; increasing the average low-speed speed V0 of the cooling bed shortens the high-speed offset time, and the transport time of the rolled piece will also be correspondingly shortened, allowing for the supplementation of missing rolled piece positions.

[0030] Otherwise, the total running time of the rolling mill in the low-speed range is corrected by obtaining the low-speed average value and the rolling mill's operating parameters.

[0031] The low-speed offset time is obtained using the following formula.

[0032]

[0033] Where T4 is the low-speed offset time, T3 is the time taken for the rolled piece to move from its entry into the low-speed zone to its real-time position, S is the moving distance of the rolled piece, V2 is the average low-speed value of the cooling bed, and V1 is the real-time speed of the rolled piece. As can be seen from the above formula, lowering the average low-speed value V2 of the cooling bed prolongs the low-speed offset time, which in turn prolongs the transport time of the rolled piece, allowing for the screening of overlapping rolled piece positions; conversely, increasing the average high-speed value V2 of the cooling bed shortens the low-speed offset time, which in turn shortens the transport time of the rolled piece, allowing for the supplementation of missing rolled piece positions.

[0034] The position signal of each rolled piece on the cooling bed is obtained through image recognition. The image recognition technology used in this invention is existing technology, and this invention does not improve upon it.

[0035] This invention can systematically input data from the entire process by real-time acquisition of current and analog-to-digital conversion.

[0036] A control system for avoiding impacts between finished rolled pieces and moving equipment. The system includes a controller, a cooling bed drive module, and a rolled piece signal acquisition module. The controller uses the control method described above to control the cooling bed drive module and the rolled piece signal acquisition module to convey the rolled piece.

[0037] The use of the controller, cooling bed drive module, and rolling stock signal acquisition module enables control of the rolling stock position, real-time acquisition of information on rolling stock collision and bending, reduces the labor intensity and safety risks of personnel, improves the efficiency of cooling bed processing, reduces equipment failure rate, and reduces spare parts costs.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention, and these will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A control method for avoiding impact between finished rolled products and moving equipment, characterized in that, The method is as follows: Set the high-speed range and low-speed range of the cooling bed, and set the high-speed average value of the high-speed range and the low-speed average value of the low-speed range. Set up high-level and low-level detection points for the cooling bed; The real-time position of the rolled piece is obtained. If the position signal of the rolled piece is missing or superimposed, it is determined whether the rolled piece is in the high-speed range or the low-speed range of the cooling bed based on the real-time position. If the rolled piece is in the high-speed range, the high-speed offset time of the rolled piece is obtained by using the high-speed average value and the running parameters of the rolled piece, and the total running time of the rolled piece in the high-speed range is corrected. Otherwise, the low-speed offset time of the rolled piece is obtained by using the low-speed average value and the running parameters of the rolled piece, and the total running time of the rolled piece in the low-speed range is corrected. The high-speed offset time is obtained using the following formula. ； Wherein, T1 is the high-speed offset time, T2 is the time taken for the workpiece to move from the high-speed zone to its real-time position, S is the moving distance of the workpiece, V0 is the high-speed average value of the cooling bed, and V1 is the real-time speed of the workpiece. The low-speed offset time is obtained using the following formula: ； Wherein, T4 is the low-speed offset time, T3 is the time taken for the workpiece to move from the low-speed range to its real-time position, S is the moving distance of the workpiece, V2 is the average low-speed value of the cooling bed, and V1 is the real-time speed of the workpiece.

2. The control method for avoiding impact on the rolling mill of finished products according to claim 1, characterized in that, The position signal of each rolled piece on the cooling bed is obtained through image recognition.

3. The control method for avoiding impact on the rolling mill of finished products according to claim 1, characterized in that, The speed of the cooling bed is obtained through a speed sensor.

4. The control method for avoiding impact on the rolling mill of finished products according to claim 1, characterized in that, The signals from the high-level and low-level detection points of the cooling bed are both obtained through limit switches.

5. A control system for a device that avoids impacts from finished rolled products, characterized in that, The system includes a controller, a cooling bed drive module, and a workpiece signal acquisition module; the controller uses the control method described in any one of claims 1-4 to control the cooling bed drive module and the workpiece signal acquisition module to transport the workpiece.

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