Rolling stock rear-end judgment method and device, PLC device and storage medium

Abstract

The embodiment of the application provides a rolling piece tail chasing judgment method and device, a PLC equipment and a storage medium, and relates to the rolling technology field of steel bar and wire section. The method is applied to the PLC equipment, and the method comprises the following steps: continuously acquiring rolling piece tracking signals, wherein each rolling piece tracking signal comprises a color identifier; in the case that the color identifiers of adjacent rolling piece tracking signals are the same, each rolling piece tracking signal with the same color identifier is determined as a target signal; the duration of each target signal is determined; and in the case that the duration of at least one target signal is greater than a preset rolling time, it is determined that rolling pieces tail chase each other and an alarm signal is sent. The embodiment of the application avoids the steel stacking failure caused by the tail chasing of rolling pieces, realizes effective monitoring of the rolling piece tracking signal, and improves the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel bar and wire section rolling technology, and more specifically, to a method, device, PLC equipment, and storage medium for judging the tailing of rolled pieces. Background Technology

[0002] Currently, the main method used by steel rolling mills to roll small-diameter Ф12, Ф14, and Ф22mm threaded steel bars is automated continuous rolling with water cooling. During continuous rolling, each steel bar undergoes automatic head cutting when it reaches the No. 1 flying shear. Due to the influence of the head quality of the billet entering the furnace, as well as the occurrence of bursting or irregular heads during the roughing process, it is necessary to automatically cut the head clean to ensure smooth entry into the intermediate rolling zone. Furthermore, the continuous rolling time interval is adjusted by the main operator based on the actual distance between the rolling bar and the furnace. During continuous rolling, due to the influence of the furnace step distance, the steel tapping equipment, and human operation, situations may occur where the rolling bars are connected head-to-tail. When the rolling bars are connected head-to-tail, the bite signal read by the No. 1 flying shear fails, generating a No. 1 flying shear error signal, causing the No. 1 flying shear to fail to cut the head, affecting the bite of the steel head in the intermediate rolling zone, and generating a finishing rolling error signal, resulting in a series of steel accumulation faults such as the looper not dislodging.

[0003] Therefore, when a piece is caught in the tail during continuous rolling, the following problems will occur: First, the tailing of the piece will affect the operation of the main operator, and the operator will be unable to concentrate on the entire rolling line; Second, the amount of abnormal cutting damage and scrap will increase, affecting the output and yield; Third, the frequent failure of steel stacking will increase the labor intensity of the personnel. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, device, PLC equipment and storage medium for judging rolling mill tailing, so as to avoid steel stacking failure caused by rolling mill tailing, realize effective monitoring of rolling mill tracking signal and improve work efficiency.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows:

[0006] In a first aspect, embodiments of the present invention provide a method for judging the tailing of rolled pieces, which is applied to PLC equipment;

[0007] The method includes:

[0008] Continuously acquire rolling mill tracking signals, wherein each rolling mill tracking signal includes a color identifier;

[0009] If adjacent rolling mill tracking signals have the same color identifier, all rolling mill tracking signals with the same color identifier shall be identified as target signals;

[0010] Determine the duration of each of the target signals;

[0011] If the duration of at least one of the target signals is greater than the preset rolling time, it is determined that the rolled piece is collapsing and an alarm signal is sent.

[0012] In an optional implementation, the PLC device is electrically connected to the rolling mill, and the step of continuously acquiring the workpiece tracking signal includes:

[0013] In response to the workpiece detection signal sent by the rolling mill, the workpiece tracking signal is continuously acquired.

[0014] In an optional implementation, the adjacent rolling mill tracking signals include a first rolling mill tracking signal and a second rolling mill tracking signal;

[0015] The step of identifying adjacent rolling mill tracking signals as target signals when the color codes of adjacent rolling mill tracking signals are the same includes:

[0016] If the color identifier in the first rolling mill tracking signal is the same as the color identifier in the second rolling mill tracking signal, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals.

[0017] In an optional implementation, the color markings include red and purple markings;

[0018] The step of determining both the first and second rolling mill tracking signals as target signals when the color identifiers in the first and second rolling mill tracking signals are the same includes:

[0019] If both the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are red or purple, then both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals.

[0020] In an optional implementation, the duration of the workpiece tracking signal is the time interval between mill load and no-load conditions;

[0021] The step of determining workpiece collision and sending an alarm signal when the duration of at least one of the target signals is greater than a preset rolling time includes:

[0022] If the time interval between the load and no-load conditions of at least one of the rolling mills is greater than the preset rolling time, a workpiece collision is determined and an alarm signal is sent.

[0023] In an optional implementation, the method further includes:

[0024] Obtain the cross-sectional dimensions of the rolled piece, and update the preset rolling time based on the cross-sectional dimensions of the rolled piece.

[0025] In an optional implementation, after the step of determining that the rolled piece is collapsing and sending an alarm signal when the duration of at least one of the target signals is greater than a preset rolling time, the method further includes:

[0026] Control the operation of the flying shear in the roughing end zone to break the head of the rolled piece in the roughing end zone.

[0027] Secondly, embodiments of the present invention provide a rolling mill tailing judgment device, which is applied to PLC equipment;

[0028] The device includes:

[0029] The signal acquisition module is used to continuously acquire the workpiece tracking signal, wherein each of the workpiece tracking signals includes a color identifier;

[0030] The judgment module is used to determine all the track signals of the rolling mill with the same color code as target signals when the color codes of adjacent track signals are the same; determine the duration of each target signal; and determine that the rolling mill is collapsing and send an alarm signal when the duration of at least one target signal is greater than a preset rolling time.

[0031] Thirdly, embodiments of the present invention provide a PLC device, including a memory and a processor;

[0032] The memory is used to store computer programs;

[0033] The processor is used to execute the computer program to implement the rolling mill tail-collision determination method provided as described in the first aspect embodiment and / or in combination with possible implementations of the first aspect embodiment.

[0034] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the rolling mill tail-collision determination method provided as described in the first aspect embodiments and / or in combination with possible implementations of the first aspect embodiments.

[0035] The beneficial effects of the embodiments of the present invention include, for example:

[0036] This invention provides a method, apparatus, PLC device, and storage medium for determining rolling mill tail-end collision. It continuously acquires rolling mill tracking signals to determine their color identifiers. If adjacent rolling mill tracking signals have the same color identifier, they are all identified as target signals. The duration of the target signals is then compared with a preset rolling time to ultimately determine if the rolling mill has engaged in tail-end collision. If collision is confirmed, an alarm signal is sent. This entire process of determining rolling mill tail-end collision avoids steel pile-up faults caused by rolling mill tail-end collisions. It effectively monitors rolling mill tracking signals while reducing the workload of main operators, preventing problems before they occur, reducing process failures, improving work efficiency, and releasing capacity for expansion.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 An exemplary structural block diagram of a PLC device provided in an embodiment of the present invention is shown;

[0040] Figure 2 A flowchart illustrating a rolling mill collision detection method provided by an embodiment of the present invention is shown.

[0041] Figure 3 The second schematic flowchart of a rolling mill collision judgment method provided by an embodiment of the present invention is shown.

[0042] Figure 4 The third flowchart of a rolling mill collision judgment method provided by an embodiment of the present invention is shown;

[0043] Figure 5 The fourth flowchart illustrates a method for determining the rear-end collision of rolled pieces according to an embodiment of the present invention.

[0044] Figure 6 The fifth flowchart illustrates a method for determining the rear-end collision of rolled pieces according to an embodiment of the present invention.

[0045] Figure 7 This diagram illustrates a flow chart of a rolling mill tail-collision judgment method provided by an embodiment of the present invention. Figure 6 ;

[0046] Figure 8 This diagram illustrates a flow chart of a rolling mill tail-collision judgment method provided by an embodiment of the present invention. Figure 7 ;

[0047] Figure 9 An exemplary structural block diagram of a rolling mill collision judgment device provided in an embodiment of the present invention is shown.

[0048] Icons: 110-PLC device; 1101-Memory; 1102-Processor; 1103-Communication interface; 300-Rolled piece collision judgment device; 301-Signal acquisition module; 302-Judgment module. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0051] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0053] Please refer to the following: Figure 1 , Figure 1 An exemplary structural block diagram of a PLC device 110 provided in an embodiment of the present invention is shown, as follows: Figure 1As shown, the PLC device 110 includes a memory 1101, a processor 1102, and a communication interface 1103. The memory 1101, processor 1102, and communication interface 1103 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines.

[0054] The memory 1101 can be used to store software programs and modules. The processor 1102 executes various functional applications and data processing by executing the software programs and modules stored in the memory 1101. The communication interface 1103 can be used to communicate with other node devices for signaling or data.

[0055] The memory 1101 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc.

[0056] The processor 1102 can be an integrated circuit chip with signal processing capabilities. The processor 1102 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0057] Based on the aforementioned PLC device 110, the following description uses the PLC device 110 as the executing entity to provide an exemplary description of a rolling mill tail-tracking judgment method provided in this embodiment of the invention. Please refer to [link / reference]. Figure 2 , Figure 2 A flowchart illustrating a rolling mill collision detection method provided by an embodiment of the present invention is shown.

[0058] like Figure 2 As shown, the above-mentioned rolling mill collision judgment method is applied to PLC equipment 110, and the above-mentioned rolling mill collision judgment method may include the following steps:

[0059] S210 continuously acquires the workpiece tracking signal.

[0060] Each rolling mill tracking signal includes a color identifier.

[0061] S220, when the color codes of adjacent rolling mill tracking signals are the same, all rolling mill tracking signals with the same color code are identified as target signals.

[0062] S230, determine the duration of each target signal.

[0063] S250, if the duration of at least one target signal is greater than the preset rolling time, determine that the rolled piece is collapsing and send an alarm signal.

[0064] The above steps realize the process of continuously acquiring the rolling mill tracking signal to determine the color identifier of the rolling mill tracking signal. When the color identifiers of adjacent rolling mill tracking signals are the same, the adjacent rolling mill tracking signals are all identified as target signals. Then, the process of comparing the duration of the target signal with the preset rolling time is used to finally determine whether the rolling mill is tailgating.

[0065] Steps S210 and S220 involve continuously acquiring rolling mill tracking signals and, when adjacent rolling mill tracking signals have the same color identifier, determining each rolling mill tracking signal with the same color identifier as the target signal.

[0066] It should be noted that in continuous production, traditional rolling mill tracking signals are generally uniformly color-coded (e.g., red). Under tight production schedules, operators may find it difficult to detect rolling mill malfunctions during extended monitoring. Since PLC devices can assign color codes to other devices or objects, a dedicated PLC color display module can be added when monitoring the rolling mill tracking signal. Specifically, this involves incorporating the corresponding color code (i.e., color identifier) ​​into the rolling mill tracking signal.

[0067] For example, if 0 and 1 are set to represent two rolled pieces, the color module can use 0 to represent red and 1 to represent purple alternately. In the actual continuous production process, when the rolling mill detection inlet detects a rolled piece, the first stand of the rolling mill will generate a load, the test rolled piece tracking signal will be established, and at this time the PLC device will obtain the first rolled piece tracking signal, and the first rolled piece tracking signal will include the first color identifier (e.g., red identifier).

[0068] Furthermore, when the current rolled piece continues to be conveyed, the hot detection signal at the mill detection inlet will be disconnected. At this time, the first stand will be unloaded. The PLC device will then acquire the second rolled piece tracking signal. The color code of the second rolled piece tracking signal will be different from that of the first rolled piece tracking signal (for example, if the first rolled piece tracking signal contains a red code, then the second rolled piece tracking signal contains a purple code).

[0069] Based on the above settings, when the PLC device continuously acquires the rolling mill tracking signal, if it is determined that the color identifiers of adjacent rolling mill tracking signals are the same (i.e., step S220), it indicates that the adjacent rolling mill tracking signals are all issued when the first stand generates a load. Therefore, it indicates that the adjacent rolling mills may be in a tail-end situation. At this time, it is necessary to further determine the duration of the rolling mill tracking signals with the same color identifiers through steps S230 and S250 to further determine whether there is a tail-end situation between the final rolling mills.

[0070] Specifically, the duration of each of the above-mentioned rolling mill tracking signals is actually the interval between multiple mill loads and mill no-loads. Since the length of a typical rolling mill (e.g., a steel billet) can be determined within a certain range, the rolling time of the entire steel billet can be calculated based on the length of the rolling mill, and this rolling time can be used as the preset rolling time of the rolling mill (e.g., 65s-70s).

[0071] Furthermore, the duration of the target signal determined in step S220 can be compared with the preset rolling time. When the duration of the target signal exceeds the preset rolling time, it can be determined that there is a tail-end collision of the rolled pieces and an alarm signal can be issued. That is, in step S250, if the duration of at least one target signal is greater than the preset rolling time, it is determined that the rolled pieces are tail-end collision and an alarm signal is sent. The above overall process, which uses the color identifier contained in each rolled piece tracking signal combined with the duration of the target signal determined from each rolled piece tracking signal to determine whether the rolled pieces are tail-end collision, is more accurate and avoids steel piling failure caused by tail-end collisions between rolled pieces. The rolled piece tracking signals are effectively monitored.

[0072] It should be noted that the above process can use a corresponding display interface to allow operators to more intuitively detect tail-end collisions between rolled pieces. For example, the continuously acquired rolled piece tracking signals can be displayed on the interface with their corresponding color codes. When two adjacent rolled piece tracking signals contain the same color code, the operator can more quickly detect potential tail-end collisions.

[0073] This invention provides a method for determining rolling mill tail-end collision. It continuously acquires rolling mill tracking signals to determine their color identifiers. If adjacent rolling mill tracking signals have the same color identifier, they are all identified as target signals. The method then compares the duration of the target signals with a preset rolling time to ultimately determine if the rolling mill has collided. If collision is confirmed, an alarm signal is sent. This entire process avoids steel pile-up faults caused by rolling mill tail-end collisions, effectively monitors rolling mill tracking signals, reduces the workload of main operators, prevents potential problems, reduces process failures, improves work efficiency, and releases potential for increased production capacity.

[0074] Optionally, the specific process of continuously acquiring the workpiece tracking signal can be achieved through the following steps:

[0075] exist Figure 2 Based on this, please refer to Figure 3 , Figure 3 This is a second flowchart illustrating the rolling mill tail-tracking judgment method provided in this embodiment of the invention. The PLC device is electrically connected to the rolling mill. Step S210, which involves continuously acquiring the rolling mill tracking signal, includes:

[0076] S211, in response to the workpiece detection signal sent by the rolling mill, continuously acquires the workpiece tracking signal.

[0077] The above steps realize the process of continuously acquiring the rolling mill tracking signal.

[0078] Optionally, when adjacent rolling mill tracking signals have the same color code, the specific process of determining all rolling mill tracking signals with the same color code as the target signal can be achieved through the following steps:

[0079] exist Figure 2 Based on this, please refer to Figure 4 , Figure 4 The third schematic flowchart of a rolling mill tracking determination method provided by an embodiment of the present invention is shown. Adjacent rolling mill tracking signals include a first rolling mill tracking signal and a second rolling mill tracking signal. Step S220, where adjacent rolling mill tracking signals have the same color identifier, involves determining all rolling mill tracking signals with the same color identifier as the target signal. This step includes:

[0080] S221, if the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are the same, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals.

[0081] The above steps enable the process of identifying all track signals with the same color code as the target signal when adjacent track signals have the same color code.

[0082] Optionally, if the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are the same, the specific process of determining both the first rolling mill tracking signal and the second rolling mill tracking signal as the target signal can be achieved through the following steps:

[0083] exist Figure 4 Based on this, please refer to Figure 5 , Figure 5 The fourth flowchart of the rolling mill tracking method provided in this embodiment of the invention is shown. The color identifiers include red and purple. Step S221, where the color identifiers in the first rolling mill tracking signal and the second rolling mill tracking signal are the same, involves determining both the first and second rolling mill tracking signals as target signals.

[0084] S2211, if both the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are red or purple, then both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals.

[0085] The above steps enable the determination of both the first and second rolling mill tracking signals as target signals when the color identifiers in the first and second rolling mill tracking signals are the same.

[0086] For example, based on the color identifier settings mentioned above, if the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are both 0, or if the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are both 1, then both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals.

[0087] Optionally, if the duration of at least one target signal is greater than a preset rolling time, the specific process of determining workpiece collision and sending an alarm signal can be implemented through the following steps:

[0088] exist Figure 2 Based on this, please refer to Figure 6 , Figure 6 The fifth flowchart illustrates the rolling mill tail-end judgment method provided in this embodiment of the invention. The duration of the rolling mill tracking signal is the time interval between mill load and no-load conditions. Step S250, which determines rolling mill tail-end and sends an alarm signal when the duration of at least one target signal is greater than the preset rolling time, includes:

[0089] S251, if the time interval between the load and no-load of at least one rolling mill is greater than the preset rolling time, determine that the rolled piece is collapsing and send an alarm signal.

[0090] The above steps enable the determination of workpiece collision and the sending of an alarm signal when the duration of at least one target signal is greater than the preset rolling time.

[0091] For example, if the preset rolling time, determined based on the length range of the rolled piece, is 2.3 seconds, and the duration of a target signal determined by the PLC device is longer than the preset rolling time (i.e., the time interval between a certain mill load and no-load is longer than the preset rolling time, for example, 2.5 seconds), then it is determined that there is a rear-end collision between the rolled pieces. The PLC device will issue an alarm signal and sound a buzzer to remind the relevant operators so that they can promptly detect the rear-end collision and take subsequent actions.

[0092] Optionally, in actual continuous production applications, the rolling time can vary significantly due to the change in the cross-section of the rolled piece. Therefore, when setting the preset rolling time, the cross-sectional dimensions of the rolled piece can be obtained and the preset rolling time updated based on these dimensions to reduce malfunctions caused by calculation errors. The specific process described above can be achieved through the following steps:

[0093] exist Figure 2 Based on this, please refer to Figure 7 , Figure 7 This is a sixth flowchart illustrating the rolling mill collision determination method provided in this embodiment of the invention. The rolling mill collision determination method further includes:

[0094] S240, obtain the cross-sectional dimensions of the rolled piece, and update the preset rolling time based on the cross-sectional dimensions of the rolled piece.

[0095] The above steps realize the process of updating the preset rolling time according to the cross-sectional dimensions of the rolled piece.

[0096] In this embodiment of the invention, the cross-sectional dimensions of the rolled piece are generally 170mm*170mm and 160mm*160mm, and the lengths are 10500mm and 11500mm, respectively. By acquiring the cross-sectional dimensions of the rolled piece in real time and updating the preset rolling time according to the cross-sectional dimensions, a more accurate preset rolling time can be obtained when the cross-section of the rolled piece is changed.

[0097] Optionally, if the rolling rhythm of the end stand of the rolling mill is too short, and it is determined through step S250 that there is a tailing between the rolled pieces, the PLC equipment needs to control the No. 1 flying shear to increase the distance between the rolled pieces and reduce steel piling faults such as the intermediate rolling mill punch exit and the finishing mill looper not falling off. The above specific process can be achieved through the following steps:

[0098] exist Figure 7 Based on this, please refer to Figure 8 , Figure 8 The seventh flowchart of the rolling mill collision determination method provided by the embodiment of the present invention is shown. After step S250, in which the rolling mill collision is determined and an alarm signal is sent when the duration of at least one target signal is greater than the preset rolling time, the rolling mill collision determination method further includes:

[0099] S260 controls the operation of the flying shear in the roughing mill end zone to break the head of the rolled piece in the roughing mill end zone.

[0100] The above steps enable the processing of the corresponding rolled pieces even when it is determined that the rolled pieces are collapsing.

[0101] In this embodiment of the invention, due to the tight steel output rhythm between the rolled pieces in the roughing zone of the rolling mill during continuous rolling production, if a collision occurs, the operator needs to manually intervene with the No. 1 flying shear head in the roughing end zone to break the head of the rolled piece and increase the distance between them. To more intelligently increase the distance between the rolled pieces and reduce operator misjudgment and misoperation, after confirming a collision and sending an alarm signal, the PLC equipment can automatically control the No. 1 flying shear in the roughing end zone to perform a three-cut breakage on the head of the rolled piece, thereby increasing the distance between them more quickly.

[0102] Based on the same inventive concept, this embodiment of the invention also provides a rolling mill tail-end judgment device 300, which is used to execute the process steps in the above embodiments and achieve the corresponding technical effects.

[0103] Specifically, please refer to Figure 9 The rolling mill collision judgment device 300 is applied to the PLC equipment 110. The rolling mill collision judgment device 300 includes a signal acquisition module 301 and a judgment module 302.

[0104] The signal acquisition module 301 is used to continuously acquire the rolling mill tracking signal, wherein each rolling mill tracking signal includes a color identifier.

[0105] The judgment module 302 is used to determine all the tracking signals of adjacent rolling mills with the same color code as target signals when the color codes of the tracking signals are the same, determine the duration of each target signal, and determine that the rolling mill is collapsing and send an alarm signal when the duration of at least one target signal is greater than the preset rolling time.

[0106] Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium storing a computer program thereon, which, when executed by processor 1102, implements a rolling mill tail-chasing judgment method provided in the above embodiments.

[0107] The steps executed by the aforementioned computer program during runtime will not be described in detail here, but can be found in the explanation of the rolling mill tail-end judgment method described above.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can also be implemented in other ways. The embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods, apparatus, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0109] In addition, the functional modules in the various embodiments of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0110] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0111] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for determining the rear-end collision of rolled pieces, characterized in that, Applied to PLC equipment; The method includes: Continuously acquire rolling mill tracking signals, wherein each rolling mill tracking signal includes a color identifier, and adjacent rolling mill tracking signals include a first rolling mill tracking signal and a second rolling mill tracking signal, and the color identifier includes a red identifier and a purple identifier; When adjacent rolling mill tracking signals have the same color identifier, all rolling mill tracking signals with the same color identifier are determined as target signals, including: when the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are the same, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals, wherein when both the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are red or purple, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals; The duration of each target signal is determined, wherein the duration of the workpiece tracking signal is the time interval between mill load and no-load conditions; Determining workpiece collision and sending an alarm signal when the duration of at least one of the target signals is greater than a preset rolling time includes: determining workpiece collision and sending an alarm signal when the time interval between at least one of the mill load and no-load conditions is greater than a preset rolling time.

2. The method for determining rolling mill collision according to claim 1, characterized in that, The PLC device is electrically connected to the rolling mill, and the step of continuously acquiring the workpiece tracking signal includes: In response to the workpiece detection signal sent by the rolling mill, the workpiece tracking signal is continuously acquired.

3. The method for determining rolling mill collision according to claim 1, characterized in that, The method further includes: Obtain the cross-sectional dimensions of the rolled piece, and update the preset rolling time based on the cross-sectional dimensions of the rolled piece.

4. The method for determining rolling mill collision according to claim 3, characterized in that, After the step of determining workpiece collision and sending an alarm signal when the duration of at least one of the target signals is greater than a preset rolling time, the method further includes: Control the operation of the flying shear in the roughing end zone to break the head of the rolled piece in the roughing end zone.

5. A rolling mill tail-collision judgment device, characterized in that, Applied to PLC equipment; The device includes: The signal acquisition module is used to continuously acquire rolling mill tracking signals, wherein each rolling mill tracking signal includes a color identifier, and adjacent rolling mill tracking signals include a first rolling mill tracking signal and a second rolling mill tracking signal, and the color identifier includes a red identifier and a purple identifier; The judgment module is used to determine all the rolling mill tracking signals with the same color identifier as target signals when adjacent rolling mill tracking signals have the same color identifier, including: when the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are the same, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals, wherein when both the color identifier in the first rolling mill tracking signal and the color identifier in the second rolling mill tracking signal are red or purple, both the first rolling mill tracking signal and the second rolling mill tracking signal are determined as target signals; the duration of each target signal is determined, wherein the duration of the rolling mill tracking signal is the time interval between mill load and no-load; when the duration of at least one target signal is greater than a preset rolling time, rolling mill collision is determined and an alarm signal is sent, including: when the time interval between at least one mill load and no-load is greater than a preset rolling time, rolling mill collision is determined and an alarm signal is sent.

6. A PLC device, characterized in that, Including memory and processor; The memory is used to store computer programs; The processor is used to execute the computer program to implement the rolling mill collision judgment method as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the rolling mill collision judgment method as described in any one of claims 1-4.

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