A control method, device, medium and equipment for a cold rolling mill lower inclined wedge block

Abstract

The present application provides a method, device, medium, and equipment for controlling the lower inclined wedge of a cold rolling mill, wherein the method includes: after the working rolls of the cold rolling mill are replaced, controlling the lower inclined wedge of the cold rolling mill to move horizontally from a starting position at a first preset speed toward the cold rolling mill to drive the lower support roll of the cold rolling mill to lift upward; after the lower inclined wedge moves to the preset position, controlling the lower inclined wedge to continue moving horizontally toward the cold rolling mill at a second preset speed, the second preset speed being less than the first preset speed; and stopping after the support roll is lifted upward to a specified position to complete the frame closure of the cold rolling mill. The present application solves the problem of collision of the rollers due to improper speed control of the lower inclined wedge when closing the cold rolling mill frame. The solution proposed in the present application can avoid collision of the rollers when the frame is closed, thereby ensuring the smooth closure of the frame after the roll change of the cold rolling mill and the subsequent production quality of the strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel rolling, in particular to a control method and device for a cold rolling mill lower wedge block, a medium and equipment. BACKGROUND

[0002] At present, a five-stand CVC cold continuous rolling mill is used in a cold rolling mill to roll plate materials such as automobile plate and household appliance plate. After the work rolls of each stand reach a specified roll period, the work rolls of each stand of the mill need to be replaced. After the work rolls of the new mill are processed by grinding, the surface has a suitable roughness. After the new rolls are inserted into the mill, the mill is closed, the lower wedge block is driven by a hydraulic cylinder to move to a specified position, at this time, the lifting speed during the lifting process needs to be accurately controlled, if the control is improper, the rolls will be damaged and the damaged roll surface will further copy defects to the strip, causing batch quality problems.

[0003] Therefore, how to use an effective and reasonable method to ensure the smooth closing of the mill stand after the cold rolling mill roll replacement and the production quality of the subsequent strip is a technical problem to be solved. SUMMARY

[0004] The purpose of the present application is to provide a control method and device for a cold rolling mill lower wedge block, a medium and equipment, which solves the problem that the work rolls of the cold rolling mill are damaged due to improper speed control of the lower wedge block when the mill stand is closed after the work roll replacement of the cold rolling mill, and the scheme provided by the present application can avoid the collision of the work rolls of the cold rolling mill when the mill stand is closed, ensuring the smooth closing of the mill stand after the cold rolling mill roll replacement and the production quality of the subsequent strip.

[0005] Specifically, the present application adopts the following technical scheme:

[0006] According to an aspect of an embodiment of the present application, a control method for a cold rolling mill lower wedge block is provided, the method comprising: after the work roll replacement of the cold rolling mill is completed, controlling the cold rolling mill lower wedge block to move from a starting position to the cold rolling mill in a horizontal direction at a first preset speed to drive the support rolls of the lower roll system of the cold rolling mill to lift upward; after the lower wedge block moves to a preset position, controlling the lower wedge block to continue moving to the cold rolling mill in a horizontal direction at a second preset speed, wherein the second preset speed is less than the first preset speed; and when the support rolls are lifted upward to a specified position and stop, the mill stand closing of the cold rolling mill is completed.

[0007] In some embodiments of the present application, based on the foregoing scheme, the movement of the lower wedge block in the horizontal direction to the cold rolling mill is driven by a hydraulic cylinder, when the lower wedge block is controlled to move in the horizontal direction to the cold rolling mill at a first preset speed, the proportional valve of the hydraulic cylinder is 100% output, when the lower wedge block is controlled to continue to move in the horizontal direction to the cold rolling mill at a second preset speed, the proportional valve of the hydraulic cylinder is 25%-70% output.

[0008] In some embodiments of the present application, based on the foregoing scheme, after the lower wedge block moves to the preset position, the lower wedge block is controlled to continue to move in the horizontal direction to the cold rolling mill at a second preset speed, comprising: calculating the moving distance of the lower wedge block from the starting position to the preset position in the horizontal direction to the cold rolling mill at a first preset speed; after the lower wedge block moves from the starting position to the preset position in the horizontal direction to the cold rolling mill at a first preset speed according to the moving distance, the lower wedge block is controlled to continue to move in the horizontal direction to the cold rolling mill at a second preset speed.

[0009] In some embodiments of the present application, based on the foregoing scheme, the calculation of the moving distance of the lower wedge block from the starting position to the preset position in the horizontal direction to the cold rolling mill at a first preset speed, comprising: calculating the height l of the lifting of the support roll of the lower roll system of the cold rolling mill; according to the height l and the protection threshold of the cold rolling mill, the moving distance of the lower wedge block from the starting position to the preset position in the horizontal direction to the cold rolling mill at a first preset speed is calculated, and the moving distance is:

[0010]

[0011]

[0012] Wherein, L is the moving distance, l is the height of the lifting of the support roll of the lower roll system of the cold rolling mill, D BURmax is the diameter of the maximum crown position of the support roll of the lower roll system, D BUR is the diameter of the support roll of the lower roll system, D IRmax is the diameter of the maximum crown position of the intermediate roll of the lower roll system, D IR is the diameter of the intermediate roll of the lower roll system, G gap is the sum of the gap between the lower wedge block and the support roll of the lower roll system and the gap between the support roll of the lower roll system and the intermediate roll after the work roll replacement is completed, p protect is the protection threshold of the cold rolling mill.

[0013] In some embodiments of the present application, based on the foregoing scheme, the lower inclined wedge block moves along the horizontal direction to the cold rolling mill at a second preset speed to drive the support rollers of the lower roller system of the cold rolling mill to lift up, and when the support rollers are lifted up to the specified position, the movement of the lower inclined wedge block is stopped.

[0014] In some embodiments of the present application, based on the foregoing scheme, when the lower inclined wedge block moves along the horizontal direction to the cold rolling mill at the first preset speed and the second preset speed, the movement is at a constant speed.

[0015] In some embodiments of the present application, based on the foregoing scheme, the cold rolling mill comprises an upper roller system and a lower roller system, and the upper roller system and the lower roller system each comprise a support roller, an intermediate roller and a work roller.

[0016] According to an aspect of an embodiment of the present application, a control device for a lower inclined wedge block of a cold rolling mill is provided, the device comprising: a first control unit configured to control the lower inclined wedge block of the cold rolling mill to move along the horizontal direction to the cold rolling mill at a first preset speed from a starting position after the work roller of the cold rolling mill is replaced, so as to drive the support rollers of the lower roller system of the cold rolling mill to lift up; and a second control unit configured to control the lower inclined wedge block to continue moving along the horizontal direction to the cold rolling mill at a second preset speed after the lower inclined wedge block moves to a preset position, wherein the second preset speed is less than the first preset speed, and when the support rollers are lifted up to a specified position, the movement of the lower inclined wedge block is stopped, so as to complete the closing of the stand of the cold rolling mill.

[0017] According to an aspect of an embodiment of the present application, a computer readable storage medium is provided, and at least one program code is stored in the computer readable storage medium, the at least one program code is loaded and executed by a processor to implement the operations performed by the method according to any one of claims 1 to 7.

[0018] According to an aspect of an embodiment of the present application, an electronic device is provided, comprising a memory and a processor, the memory stores a computer program, and the processor implements the operations performed by the method according to any one of claims 1 to 7 when executing the computer program.

[0019] From the above technical solutions, the present application has at least the following advantages and positive effects:

[0020] By using the scheme provided by the present application, the problem that the rollers of the cold rolling mill collide with each other when the stand of the cold rolling mill is closed after the work roller is replaced due to improper speed control of the lower inclined wedge block is solved. The scheme provided by the present application can avoid the collision of the rollers of the cold rolling mill when the stand is closed, and ensure the smooth closing of the stand of the cold rolling mill after the work roller is replaced and the production quality of the subsequent strip steel. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0022] Figure 1 A flow chart of a control method of a lower inclined wedge block of a cold rolling mill in an embodiment of the present application is shown;

[0023] Figure 2 A schematic diagram of a lower inclined wedge block of a cold rolling mill in an embodiment of the present application is shown;

[0024] Figure 3 A schematic diagram of a speed change of a lower inclined wedge block of a cold rolling mill in an embodiment of the present application is shown.

[0025] Figure 4 A structural block diagram of a control device of a lower inclined wedge block of a cold rolling mill in an embodiment of the present application is shown;

[0026] Figure 5 A structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown. DETAILED DESCRIPTION

[0027] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects to those skilled in the art. Like reference numerals may refer to like elements throughout.

[0028] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0029] The flow charts shown in the drawings are only illustrative, and do not necessarily include all the contents and operations / steps, nor do they have to be executed in the order described. For example, some operations / steps can be further broken down, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described.

[0031] The cold rolling mill in this application may include an upper roll system and a lower roll system, wherein the upper roll system may include an upper support roll, an upper intermediate roll, and an upper working roll; and the lower roll system may include a lower support roll, a lower intermediate roll, and a lower working roll. The cold rolling mill can be used to roll plates such as automotive plates and home appliance plates. After the upper roll system and the lower roll system of each stand of the cold rolling mill reach the specified roll period and production, the rolls that have reached production need to be replaced. The replacement cycle of the working roll is the shortest. When the working roll reaches the specified roll period and production, it needs to be replaced. The old working roll that has originally reached production is pulled out and a new working roll (which may include an upper working roll and a lower working roll) is inserted.

[0032] When changing the working rolls, the cold rolling mill's frame is in the open state because the old rolls need to be pulled out and the new rolls inserted using a roll-changing trolley. After the new rolls are inserted, the cold rolling mill's frame automatically closes, restoring the upper and lower roll systems to their production positions. When the cold rolling mill's frame automatically closes, the lower inclined wedge blocks move horizontally to drive the support rolls of the lower roll system to rise to the designated position. When the support rolls of the lower roll system rise, the intermediate rolls of the lower roll system and the working rolls rise together. When the support rolls of the lower roll system rise to the designated position, the cold rolling mill's frame automatically closes.

[0033] In the process of the lower inclined wedge block of the cold rolling mill moving laterally to drive the support rollers of the lower roller system to lift up to the specified position, it is necessary to accurately control the speed at which the support rollers of the lower roller system are lifted up. If the speed is improperly controlled, such as the speed is too fast, it will cause collisions between the rollers, resulting in damage to the roller surfaces of each roller. If rollers with damaged roller surfaces are used to produce strip steel, the roller surfaces will print the damage defects on the strip steel, causing quality problems in the batch of strip steel. The speed at which the support rollers of the lower roller system are lifted up is determined by the lateral movement speed of the lower inclined wedge block, so how to correctly control the lateral movement speed of the lower inclined wedge block is the key to avoiding collisions between the rollers. The present application proposes a control method, device, medium and equipment for the lower inclined wedge block of a cold rolling mill, which realizes the accurate control of the speed at which the support rollers of the lower roller system are lifted up, so as to avoid the problem of collisions between the rollers due to excessive speed, and ensure the quality of strip steel production.

[0034] The following is a detailed description of the implementation details of the technical solution of the embodiment of the present application:

[0035] Reference Figure 1 ,Figure 1 A flow chart of a control method of a lower inclined wedge block in a cold rolling mill according to an embodiment of the present application.

[0036] According to a typical embodiment of the present application, a control method of a lower inclined wedge block in a cold rolling mill is provided, which comprises the following steps S1-S3:

[0037] Step S1, after the completion of the work roll replacement of the upper roll system in the cold rolling mill, the lower inclined wedge block of the cold rolling mill is controlled to move from the starting position to the cold rolling mill along the horizontal direction at a first preset speed, so as to drive the support roll of the lower roll system of the cold rolling mill to lift up.

[0038] Step S2, after the lower inclined wedge block moves to the preset position, the lower inclined wedge block is controlled to continue to move to the cold rolling mill along the horizontal direction at a second preset speed, wherein the second preset speed is less than the first preset speed.

[0039] Step S3, when the support roll is lifted up to the specified position and stopped, the closing of the stand of the cold rolling mill is completed.

[0040] In the present application, after the work rolls of the upper roll system and the lower roll system in the cold rolling mill reach the specified roll period, the stand of the cold rolling mill is controlled to be in an open state, the old work roll can be extracted by the roll replacement trolley, and the new work roll after the roll grinding treatment can be inserted into the stand by the roll replacement trolley, when the insertion of the new work roll is completed, the stand of the cold rolling mill starts to automatically close, and when the automatic closing is performed, the lower inclined wedge block of the cold rolling mill is controlled to move from the starting position (i.e. the position of the lower inclined wedge block after the new work roll is inserted) to the cold rolling mill along the horizontal direction at a first preset speed, so as to drive the support roll of the lower roll system of the cold rolling mill to lift up.

[0041] In the present application, after the lower inclined wedge block of the cold rolling mill is controlled to move from the starting position to the preset position along the horizontal direction at the first preset speed, the lower inclined wedge block is immediately controlled to continue to move to the cold rolling mill along the horizontal direction at the second preset speed. It should be noted that the second preset speed is less than the first preset speed, and after the lower inclined wedge block moves to the preset position, it still needs to move a certain distance to complete the closing of the cold rolling mill. In order to avoid that the lower inclined wedge block continues to move to the cold rolling mill along the horizontal direction at the preset position at a speed that is too fast, the height of the support roll driven to lift up exceeds the height that meets the closing of the stand of the cold rolling mill, resulting in the collision of each roll of the upper roll system and the lower roll system of the cold rolling mill, thereby damaging the surface of each roll and affecting the quality of the subsequent rolled strip. The lower inclined wedge block is immediately controlled to continue to move to the cold rolling mill along the horizontal direction at the second preset speed after the lower inclined wedge block moves to the preset position, at this time, the moving speed is slow.

[0042] In the present application, the lower wedge block is controlled to continue moving to the cold rolling mill along the horizontal direction at a second preset speed, at this time, the lower wedge block also drives the support roller of the lower roller system of the cold rolling mill to continue lifting up, when the support roller is lifted up to the specified position, it means that the support roller has reached the optimal height to meet the closing of the cold rolling mill, when the support roller is lifted up to the specified position, the lower wedge block is controlled to stop moving, at this time, the closing of the stand of the cold rolling mill is completed, and the cold rolling mill can start to roll the strip.

[0043] In an embodiment of the present application, the movement of the lower wedge block to the cold rolling mill along the horizontal direction is driven by a hydraulic cylinder, when the lower wedge block is controlled to move to the cold rolling mill along the horizontal direction at a first preset speed, the proportional valve of the hydraulic cylinder is 100% output, when the lower wedge block is controlled to continue moving to the cold rolling mill along the horizontal direction at a second preset speed, the proportional valve of the hydraulic cylinder is 25% to 70% output.

[0044] In the present application, the movement of the lower wedge block to the cold rolling mill along the horizontal direction is driven by a hydraulic cylinder, and the proportional valve of the hydraulic cylinder controls the oil supply, the more oil supplied, the faster the speed of the movement of the lower wedge block to the cold rolling mill along the horizontal direction controlled by the hydraulic cylinder, when the lower wedge block is controlled to move to the cold rolling mill along the horizontal direction at a first preset speed, the proportional valve of the hydraulic cylinder can be 100% output, and the lower wedge block moves to the cold rolling mill along the horizontal direction at a fast speed, when the lower wedge block is controlled to continue moving to the cold rolling mill along the horizontal direction at a second preset speed, the proportional valve of the hydraulic cylinder can be 25% to 70% output, at this time, the speed is lower than the first preset speed, the movement of the lower wedge block to the cold rolling mill along the horizontal direction at the first preset speed is a fast movement stage, and the movement of the lower wedge block to the cold rolling mill along the horizontal direction at the second preset speed is a slow movement stage, after the lower wedge block moves to the preset position, the lower wedge block is switched from fast movement to slow movement, so as to avoid the collision of each roller of the cold rolling mill due to the too fast speed when the cold rolling mill is about to be closed.

[0045] In the present application, it is noted that when the lower inclined wedge continues to move to the cold rolling mill at the second preset speed in the horizontal direction, the output range of the proportional valve of the hydraulic cylinder can be 25% to 70% output, or the output range of the proportional valve of the hydraulic cylinder can be 40% output, which is not particularly limited in the present application and can be adjusted according to the actual production needs. It is also noted that when the lower inclined wedge continues to move to the cold rolling mill at the second preset speed in the horizontal direction (the slow moving stage of the lower inclined wedge), when determining the output value of the proportional valve of the hydraulic cylinder, first, it is necessary to ensure that the lower inclined wedge can drive the support roller of the lower roller system of the cold rolling mill to be lifted upward when the lower inclined wedge continues to move to the cold rolling mill in the horizontal direction, and the minimum output value of the proportional valve of the hydraulic cylinder is 25%; second, it is necessary to ensure that the lifting time is not too long in the whole slow lifting process, so as to prolong the roll changing time. Third, the output value of the proportional valve of the hydraulic cylinder cannot exceed 70%, so as to avoid causing the support roller to impact the intermediate roller, resulting in collision and damage of the roller surface of each roller.

[0046] In an embodiment of the present application, after the lower inclined wedge moves to the preset position, the lower inclined wedge continues to move to the cold rolling mill at the second preset speed in the horizontal direction, which comprises:

[0047] The moving distance of the lower inclined wedge from the starting position to the preset position at the first preset speed in the horizontal direction is calculated.

[0048] After the lower inclined wedge moves to the preset position from the starting position at the first preset speed in the horizontal direction according to the moving distance, the lower inclined wedge continues to move to the cold rolling mill at the second preset speed in the horizontal direction.

[0049] In the present application, the preset position needs to be determined, and the moving distance of the lower inclined wedge from the starting position to the preset position is calculated. Only after the preset position is determined, the position of the lower inclined wedge from the fast moving stage to the slow moving stage can be accurately switched, and after the moving distance is calculated, the lower inclined wedge is switched to the second preset speed to continue to move to the cold rolling mill in the horizontal direction according to the moving distance from the starting position to the preset position at the first preset speed in the horizontal direction.

[0050] In an embodiment of the present application, the moving distance of the lower inclined wedge from the starting position to the preset position at the first preset speed in the horizontal direction is calculated, which comprises:

[0051] The lifting height l of the support roller of the lower roller system of the cold rolling mill is calculated.

[0052] According to the height l and the protection threshold of the cold rolling mill, a moving distance of the lower wedge block from a starting position to a preset position along a horizontal direction at a first preset speed is calculated, and the moving distance is:

[0053]

[0054]

[0055] Wherein, L is the moving distance, l is the height of the lifting of the support roll of the lower roll system of the cold rolling mill, D BURmax is the diameter of the maximum crown position of the support roll of the lower roll system, D BUR is the diameter of the support roll of the lower roll system, D IRmax is the diameter of the maximum crown position of the intermediate roll of the lower roll system, D IR is the diameter of the intermediate roll of the lower roll system, G gap is the sum of the gap between the lower wedge block and the support roll of the lower roll system and the gap between the support roll of the lower roll system and the intermediate roll after the work roll replacement is completed, and p protect is the protection threshold of the cold rolling mill.

[0056] In an embodiment of the present application, the stopping of the support roll after being lifted up to the specified position includes: the lower wedge block moves along the horizontal direction at a second preset speed to drive the support roll of the lower roll system of the cold rolling mill to be lifted up, and the lower wedge block is controlled to stop moving when the support roll is lifted up to the specified position.

[0057] In the present application, when the support roll is lifted up to the specified position, the position satisfying the closing of the frame of the cold rolling mill is reached. When the lower wedge block moves along the horizontal direction at the second preset speed, the support roll of the lower roll system of the cold rolling mill is slowly lifted up, and the lower wedge block is controlled to stop moving along the horizontal direction when the support roll is lifted up to the specified position, and at this time, the frame of the cold rolling mill is closed.

[0058] In an embodiment of the present application, when the lower wedge block moves along the horizontal direction at the first preset speed and the second preset speed, the moving is at a uniform speed to ensure that the support roll is lifted up stably, and to avoid the impact of the support roll on the intermediate roll due to the non-uniform speed, and to avoid the collision and damage of the roll surfaces of the rolls.

[0059] In an embodiment of the present application, the cold rolling mill includes an upper roll system and a lower roll system, and the upper roll system and the lower roll system each include a support roll, an intermediate roll and a work roll.

[0060] In the present application, the cold rolling mill may include an upper roll system and a lower roll system, wherein the upper roll system and the lower roll system both include support rolls, intermediate rolls, and working rolls. The positions of the rolls of the upper roll system from top to bottom are upper support rolls, upper intermediate rolls, and upper working rolls, and the positions of the rolls of the lower roll system from top to bottom are upper working rolls, upper intermediate rolls, and upper support rolls.

[0061] The specific implementation methods of the present application are further illustrated below through specific examples, but the specific implementation methods of the present application are not limited to the following examples.

[0062] In a specific embodiment of the present application, taking a CVC five-stand cold rolling mill as an example, when the working rolls of each stand reach the specified roll production period, a working roll replacement operation is performed.

[0063] Reference Figure 2 , use the roll changing trolley to extract the old working roll, and then use the roll changing trolley to insert the new working roll that has been processed by the grinding roll into the frame. When the new working roll is inserted, the frame of the cold rolling mill begins to close automatically. Among them, the diameter of the support roll 203 of the lower roll system at the maximum crown position is 1344.396mm, and the minimum diameter of the support roll 203 of the lower roll system is 1340.948mm; the diameter of the intermediate roll of the lower roll system at the maximum crown position is 635.003mm, and the minimum diameter of the intermediate roll of the lower roll system is 634.945mm; after the working roll is changed, the gap between the lower inclined wedge and the support roll 203 of the lower roll system is ( Figure 2 The sum of the gaps between the support roll 203 of the lower roll system and the middle roll is 15 mm; the protection threshold of the cold rolling mill is 20 mm. Figure 2 It includes a lower inclined wedge block 202, a fixed inclined wedge block 205, a hydraulic cylinder 201, and a support roller 203 (support roller of the lower roller system).

[0064] The automatic closing process of the cold rolling mill frame includes: referring to Figure 2 During the rapid movement stage of the lower inclined wedge block 202, the proportional valve of the hydraulic cylinder 201 outputs 100% to drive the lower inclined wedge block 202 of the cold rolling mill to move horizontally from the starting position toward the cold rolling mill, thereby driving the support roller 203 of the lower roller system of the cold rolling mill to lift upward.

[0065] The secondary control system of the rolling mill calculates the preset position for switching the moving speed of the downwardly inclined wedge block 202, and calculates the moving distance as:

[0066]

[0067]

[0068] Wherein, L is the moving distance, l is the height of the support roller 203 of the lower roller system of the cold rolling mill, and DBURmax D is the diameter of the maximum crown position of the backup roll 203 of the lower roll system BUR D is the diameter of the backup roll 203 of the lower roll system IRmax D is the diameter of the maximum crown position of the intermediate roll of the lower roll system IR G is the diameter of the intermediate roll of the lower roll system gap P is the sum of the gap between the lower wedge block 202 and the backup roll 203 of the lower roll system and the gap between the backup roll 203 of the lower roll system and the intermediate roll after the work roll change is completed protect D is the protection threshold of the cold rolling mill.

[0069] The above parameters are brought into the formula as follows:

[0070]

[0071]

[0072] Referring to Figure 2 and Figure 3 , it is calculated that the proportional valve of the hydraulic cylinder 201 outputs at 100%, drives the lower wedge block 202 of the cold rolling mill to move 180.87 mm horizontally from the starting position to the preset position, and performs speed switching at the preset position. The proportional valve of the hydraulic cylinder 201 is switched to output at 40%, and the fast moving stage is switched to the slow moving stage. The proportional valve of the hydraulic cylinder 201 continues to drive the lower wedge block 202 to continue moving horizontally to the cold rolling mill at an output of 40%. When the backup roll 203 is lifted up to the specified position (the surface pressure value of the backup roll 203 is equal to 5 KN), it stops to complete the rack closing of the cold rolling mill.

[0073] The device embodiment of the present application is described below, which can be used to execute the working condition monitoring method of the coiler in the above-mentioned embodiments of the present application. For details not disclosed in the device embodiment of the present application, please refer to the above-mentioned embodiments of the working condition monitoring method of the coiler.

[0074] Figure 4 FIG. 1 is a structural block diagram of a control device of a cold rolling mill lower wedge block according to an embodiment of the present application.

[0075] Referring to Figure 4 , the control device of the cold rolling mill lower wedge block according to one embodiment of the present application comprises: a first control unit 401, a second control unit 402.

[0076] The first control unit 401 is configured to control the lower inclined wedge block of the cold rolling mill to move along the horizontal direction from the starting position to the cold rolling mill at a first preset speed after the work roll of the cold rolling mill is replaced, so as to drive the support roll of the lower roll system of the cold rolling mill to be lifted up.

[0077] The second control unit 402 is configured to control the lower inclined wedge block to continue to move along the horizontal direction to the cold rolling mill at a second preset speed after the lower inclined wedge block moves to the preset position, wherein the second preset speed is less than the first preset speed, and the support roll is stopped after being lifted up to the designated position, so as to complete the frame closing of the cold rolling mill.

[0078] Referring to Figure 5 , Figure 5 A structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0079] As shown in Figure 5 , the computer system 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes in accordance with a program stored in a read-only memory (ROM) 502 or a program loaded from a storage section 508 into a random access memory (RAM) 503, such as performing the methods described in the above embodiments. In the RAM 503, various programs and data required for the operation of the system are also stored. The CPU 1101, the ROM 502, and the RAM 503 are connected to each other through a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0080] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as necessary. A removable recording medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 510 as necessary, so that a computer program read out therefrom is installed in the storage section 508 as necessary.

[0081] In particular, the processes described above with reference to the flow charts can be implemented as a computer software program in accordance with the embodiments of the present application. For example, an embodiment of the present application includes a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for executing the methods illustrated by the flow charts. In such an embodiment, the computer program can be downloaded and installed from a network by the communication section 509, and / or installed from the removable medium 511. When the computer program is executed by the central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0082] It should be noted that the computer readable medium shown in the embodiments of the present application can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take many forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained on the computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination of the above.

[0083] The flowcharts and block diagrams in the drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowcharts, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0084] The units described in the embodiments of the present application can be implemented by software, or by hardware, or by a combination of software and hardware. The units described may

[0085] According to a typical embodiment of the present application, the present application further provides a computer readable storage medium, the computer readable storage medium stores at least one program code, the at least one program code is loaded and executed by a processor to implement the operations performed by the working condition monitoring method of the coiling machine.

[0086] According to a typical embodiment of the present application, the present application further provides an electronic device, the electronic device comprises a memory and a processor, the memory stores a computer program, and the processor implements the working condition monitoring method of the coiling machine when executing the computer program.

[0087] It should be noted that although several modules or units of the device for action execution are mentioned in the foregoing detailed description, such a division is not mandatory. Indeed, according to an embodiment of the present application, the features and functionalities of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functionalities of one module or unit described above can be further divided into a plurality of modules or units.

[0088] From the above technical solutions, the present application has at least the following aspects of advantages and positive effects:

[0089] Firstly, the scheme provided in the application can solve the problem that the cold rolling mill rolls collide with each other due to improper speed control of the lower inclined wedge block when the cold rolling mill frame is closed after the work roll is replaced, and can avoid the collision of the rolls when the cold rolling mill frame is closed, thereby ensuring the smooth closing of the frame and the production quality of the subsequent strip after the roll is replaced.

[0090] Secondly, the scheme provided in the application can ensure the high-quality production of the strip, improve the quality and production efficiency of the strip, increase the market competitiveness and capital income.

[0091] Thirdly, the scheme provided in the application can greatly reduce the scrap quantity of the strip and the damage quantity of the equipment, thereby greatly saving resources and equipment maintenance funds.

[0092] Although the application has been described with reference to several exemplary embodiments, it will be understood that the terms used are terms of description and illustration and not of limitation. Since the application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it should be understood that the above-described embodiments are not limited to any of the aforementioned details, but are to be construed broadly within the spirit and scope of the appended claims, and all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds, are to be embraced by the claims.

Claims

1. A method for controlling the lower inclined wedge of a cold rolling mill, characterized in that: The method comprises: After the work rolls of the cold rolling mill are replaced, the lower inclined wedge of the cold rolling mill is controlled to move from a starting position to the cold rolling mill in a horizontal direction at a first preset speed, so as to drive the support rolls of the lower roll system of the cold rolling mill to lift upward; After the downwardly inclined wedge block moves to the preset position, controlling the downwardly inclined wedge block to continue to move toward the cold rolling mill in the horizontal direction at a second preset speed, wherein the second preset speed is less than the first preset speed; When the support roller is lifted up to a specified position, it stops to complete the frame closing of the cold rolling mill; When the downwardly inclined wedge moves toward the cold rolling mill in the horizontal direction at the first preset speed and the second preset speed, both are moving at a uniform speed; The downward inclined wedge block is driven by a hydraulic cylinder to move horizontally toward the cold rolling mill. When the downward inclined wedge block is controlled to move horizontally toward the cold rolling mill at a first preset speed, the proportional valve of the hydraulic cylinder has an output of 100%. When the downward inclined wedge block is controlled to continue moving horizontally toward the cold rolling mill at a second preset speed, the proportional valve of the hydraulic cylinder has an output of 25%~70%.

2. The method according to claim 1, characterized in that After the downwardly inclined wedge block moves to the preset position, controlling the downwardly inclined wedge block to continue to move toward the cold rolling mill in the horizontal direction at a second preset speed includes: Calculating a moving distance of the downwardly inclined wedge from a starting position to the preset position at a first preset speed along a horizontal direction toward the cold rolling mill; After the downwardly inclined wedge block moves horizontally from the starting position to the preset position at a first preset speed toward the cold rolling mill according to the moving distance, the downwardly inclined wedge block is controlled to continue moving horizontally toward the cold rolling mill at a second preset speed.

3. The method according to claim 2, characterized in that The calculating of the moving distance of the downwardly inclined wedge from the starting position to the preset position along the horizontal direction toward the cold rolling mill at a first preset speed includes: Calculate the height of the lower roll support roll of the cold rolling mill l ; According to the height l The moving distance of the downwardly inclined wedge from the starting position to the preset position along the horizontal direction toward the cold rolling mill at a first preset speed is calculated based on the protection threshold of the cold rolling mill. The moving distance is: ， ， in, L is the moving distance, l is the height of the support rolls of the lower roll system of the cold rolling mill, is the diameter of the support roller of the lower roller system at the position of maximum crown, is the diameter of the support roller of the lower roller system, is the diameter of the middle roller of the lower roller system at the maximum crown position, is the diameter of the middle roller of the lower roller system, After the work roll is changed, it is the sum of the gap between the lower inclined wedge and the support roll of the lower roll system and the gap between the support roll of the lower roll system and the middle roll. is the protection threshold of the cold rolling mill.

4. The method according to claim 3, characterized in that The method of stopping the supporting roller after the supporting roller is lifted up to a specified position includes: The downward inclined wedge block moves horizontally toward the cold rolling mill at a second preset speed to drive the support rollers of the lower roller system of the cold rolling mill to lift upward. When the support rollers are lifted upward to a specified position, the downward inclined wedge block is controlled to stop moving.

5. The method according to claim 1, wherein The cold rolling mill includes an upper roll system and a lower roll system, and both the upper roll system and the lower roll system include support rolls, intermediate rolls, and working rolls.

6. A control device for the lower inclined wedge of a cold rolling mill, characterized in that: The device comprises: a first control unit configured to control a lower inclined wedge of the cold rolling mill to move horizontally toward the cold rolling mill at a first preset speed from a starting position after the work roll change of the cold rolling mill is completed, so as to drive the support rolls of the lower roll system of the cold rolling mill to lift upward; the lower inclined wedge is driven by a hydraulic cylinder to move horizontally toward the cold rolling mill, and when the lower inclined wedge is controlled to move horizontally toward the cold rolling mill at the first preset speed, the proportional valve of the hydraulic cylinder is at 100% output; The second control unit is used to control the downward inclined wedge block to continue to move toward the cold rolling mill at a second preset speed in the horizontal direction after the downward inclined wedge block moves to the preset position, wherein the second preset speed is less than the first preset speed, and the support roller stops after being lifted upward to the specified position to complete the frame closure of the cold rolling mill; when the downward inclined wedge block is controlled to continue to move toward the cold rolling mill at the second preset speed in the horizontal direction, the proportional valve of the hydraulic cylinder has an output of 25%~70%; when the downward inclined wedge block moves toward the cold rolling mill at the first preset speed and the second preset speed in the horizontal direction, it moves at a uniform speed.

7. A computer-readable storage medium, characterized in that At least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by the processor to implement the operations performed by the method according to any one of claims 1 to 5.

8. An electronic device, characterized in that: The electronic device includes one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the method according to any one of claims 1 to 5.

Images