Steel feeding control method and system of combined shear and electronic equipment

Abstract

The embodiment of the invention provides a combined shear steel feeding control method and system and electronic equipment, and belongs to the field of automatic control. The combined shear steel feeding control method comprises the following steps: constructing a plurality of steel feeding control modes according to a plurality of shear modes and a plurality of production process parameters, wherein the multiple shearing modes comprise a double-side shearing mode, a fixed-length shear shearing mode, a combined mode of head cutting, edge cutting and length fixing, a combined mode of head cutting sample edge cutting and length fixing, a fixed-length breaking mode and an air passing mode; and determining a target steel feeding control mode from the plurality of steel feeding control modes according to a relation among a double-side shearing mode, a fixed-length shear shearing mode, a combined mode of head cutting, edge cutting and length fixing, a combined mode of head cutting sample edge cutting and length fixing, a fixed-length breaking mode and the length of the tail waste strip. According to the embodiment of the invention, the double-side scissors and the fixed-length scissors can be controlled to cut simultaneously, so that the complex technological process of the combined scissors is completed.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a combined shearing and steel feeding control method, a combined shearing and steel feeding control system, an electronic device and a computer program product. Background Art

[0002] In the medium and thick plate production line, most of the steel plate shearing lines still use single-machine equipment arranged separately and at a long distance, such as disc shears and rolling shears. One shearing line will occupy 2 / 3 of the entire plant, or even more. The shearing machines arranged separately and at a long distance have the following disadvantages: they cannot cut the edges longitudinally and cut the plates transversely at the same time, the shearing efficiency is low, the investment is high, and the operators are many. They cannot meet the needs of modern medium and thick plate rolling mills with transformed main rolling line equipment for steel plate quality, variety, and output.

[0003] The combined shearing unit of rolling-cut double-sided shearing and cut-to-length shearing is a typical unit of the short production line process of the medium and thick plate production line. The distance between each shearing machine is only a few meters, there are few rollers for conveying steel plates, the plant is short, and the investment is small. It is particularly suitable for the technical transformation project of double-sided shearing and cut-to-length shearing in medium and thick plate rolling mills, and can shear the plates longitudinally and transversely at the same time. The plate shearing quality is good, that is, the incision is smooth and flat; the shearing frequency is high; the shearing capacity is strong, and it can shear medium and thick steel plates with a thickness of 4 to 50 mm and a strength of 1300 MPa. Therefore, in the new construction or technical transformation of medium and thick plate rolling mills, the use of the combined shearing unit of rolling-cut double-sided shearing and cut-to-length shearing has important technical and economic value.

[0004] In the prior art, the double-sided shear and the cut-to-length shear are controlled by a set of PLCs respectively. During the shearing process, the double-sided shear and the cut-to-length shear PLC control systems perform the steel feeding positioning control of their respective process sections according to the process shearing mode, and use the double-sided shear outlet pinch rollers as the dividing point to perform tracking control of the two areas. When the steel plate does not reach the fixed-length tracking position of the cut-to-length shear, the double-sided shear PLC control system controls the positioning of the steel plate in the double-sided shear area according to a fixed step length or a variable step length. When the positioning target value is less than the double-sided shear positioning step length and is close to the cut-to-length target of the cut-to-length shear, the input and output pinch rollers and the input and output rollers perform the positioning process according to the cut-to-length shear target value. When the cutting process is performed, the cut-to-length shear completes the positioning shearing control; when the sample shearing is performed, the cut-to-length shear completes the positioning shearing control; when the head or tail shearing is performed, the cut-to-length shear completes the positioning shearing control; when the tail of the steel plate is too long, the double-sided shear PLC completes the length control of the tail on the premise of completing the cut-to-length shearing.

[0005] However, in the prior art, the shearing processes of the double-sided shear and the cut-to-length shear are integrated. Only after the cut-to-length shear completes shearing can the shearing setting of the next steel plate be accepted and the shearing action of the double-sided shear be started. Therefore, a control method is needed to control the double-sided shear and the cut-to-length shear to perform cutting at the same time to complete the complex process of combined shearing. Summary of the invention

[0006] The purpose of the embodiments of the present invention is to provide a combined shearing and steel feeding control method, a combined shearing and steel feeding control system, an electronic device and a computer program product. The combined shearing and steel feeding control method can fully or partially solve the technical problem that the prior art cannot simply and efficiently control the double-sided shear and the fixed-length shear to perform cutting at the same time, which leads to a complex process control process of the combined shearing with a lot of process data communications and cumbersome control process.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a combined shearing and steel feeding control method, which comprises: constructing a plurality of steel feeding control modes according to a plurality of shearing modes and a plurality of production process parameters, wherein the plurality of shearing modes comprise: a double-sided shearing mode, a fixed-length shearing mode, a combination mode of head cutting, edge cutting and fixed-length, a combination mode of head cutting, edge cutting and fixed-length, a fixed-length breaking mode and a blank passing mode; and, according to the relationship between the double-sided shearing mode, the fixed-length shearing mode, the combination mode of head cutting, edge cutting and fixed-length, a combination mode of head cutting, edge cutting and fixed-length, a fixed-length breaking mode and a length of the tail waste strip, determining a target steel feeding control mode from the plurality of steel feeding control modes.

[0008] Optionally, constructing multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters includes: constructing multiple steel feeding control modes corresponding to the multiple shearing modes according to the multiple shearing modes and multiple production process parameters, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode.

[0009] Optionally, the determining of the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the bilateral shearing mode, the cut-to-length shearing mode, the combination mode of head cutting, edge cutting and fixed length, the combination mode of head cutting, sample cutting, edge cutting and fixed length, and the fixed length breaking mode as well as the length of the tail waste strip comprises: when the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode, determining the target steel feeding control mode as a non-positioning steel feeding mode; or, when the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode but is only an empty pass mode, determining the target steel feeding control mode as a non-positioning steel feeding mode; or, when the shearing mode does not belong to the bilateral shearing mode but belongs to the cut-to-length shearing mode, determining the target steel feeding control mode as a steel feeding mode with fixed length target values ​​for head cutting, sample cutting, fixed length, breaking and tail cutting positioned; or, when the shearing mode belongs to the combination mode of head cutting, edge cutting and fixed length, the combination mode of head cutting, sample cutting, edge cutting and fixed length, or belongs to the bilateral shearing mode, judging whether the bilateral shearing mode is completed, and when the bilateral shearing mode is completed, determining the target steel feeding control mode as fixed length. The target value positioning steel feeding mode; when the double-sided shearing mode is not completed and the tail cutting stage is not reached, it is determined whether the difference between the fixed-length target value and the fixed-length shearing length tracking value in the shearing mode is greater than or equal to the set step length. When the difference is greater than or equal to the set step length, the target steel feeding control mode is determined to be the full-step positioning steel feeding mode; or, when the difference is less than the set step length, the target steel feeding control mode is determined to be the adjusted position positioning steel feeding mode; or, when the double-sided shearing mode is not completed and the tail cutting stage is reached. In the stage, it is determined whether the difference between the fixed-length target value and the fixed-length cutting length tracking value in the shearing mode is greater than or equal to the tail control threshold value. When the difference is greater than the tail control threshold value, it is determined that the target steel feeding control mode is the steel feeding mode with full-step positioning; or, when the difference is greater than or equal to the set step length and less than the tail control threshold value, it is determined that the target steel feeding control mode is the steel feeding mode with tail position positioning, or, when the difference is less than the set step length, it is determined that the target steel feeding control mode is the steel feeding mode with fixed-length target value positioning.

[0010] Optionally, the double-sided cutting mode and the combined cutting mode of the double-sided cutting mode and the fixed-length cutting mode are both controlled by the PLC corresponding to the double-sided cutting mode, and the communication between the fixed-length cutting mode and the combined cutting mode of the double-sided cutting mode and the fixed-length cutting mode and the control device is controlled by the PLC corresponding to the fixed-length cutting mode.

[0011] The second aspect of the present invention also provides a combined shearing and steel feeding control system, which includes: a construction module for constructing multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters, wherein the multiple shearing modes include: double-sided shearing mode, fixed-length shearing mode, a combination mode of head cutting, edge cutting and fixed length, a combination mode of head cutting sample edge cutting and fixed length, a fixed-length breaking mode and a blank passing mode; and a determination module for determining the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the double-sided shearing mode, fixed-length shearing mode, a combination mode of head cutting, edge cutting and fixed length, a combination mode of head cutting sample edge cutting and fixed length, a fixed-length breaking mode and the length of the tail waste strip.

[0012] Optionally, the construction module is used to construct multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters, including: constructing multiple steel feeding control modes corresponding to the multiple shearing modes according to the multiple shearing modes and multiple production process parameters, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode.

[0013] Optionally, the determination module is used to determine the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the bilateral shearing mode, the cut-to-length shearing mode, the combination mode of head cutting, edge cutting and fixed length cutting, the combination mode of head cutting, sample cutting, edge cutting and fixed length cutting, and the fixed length breaking mode as well as the length of the tail waste strip, including: when the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode, but is only an empty pass mode, determining the target steel feeding control mode as a non-positioned steel feeding mode; or, when the shearing mode does not belong to the bilateral shearing mode but belongs to the cut-to-length shearing mode, determining the target steel feeding control mode as a steel feeding mode with fixed length target value positioning for head cutting, sample cutting, fixed length, breaking and tail cutting; or, when the shearing mode belongs to the combination mode of head cutting, edge cutting, fixed length and tail cutting, the combination mode of head cutting, sample cutting, edge cutting, fixed length and tail cutting, or belongs to the bilateral shearing mode, judging whether the bilateral shearing mode is completed, and when the bilateral shearing mode is completed, determining the target steel feeding control mode as a steel feeding mode with fixed length target value positioning; In the case where the mode is not completed and the tail cutting stage is not reached, it is determined whether the difference between the fixed-length target value and the fixed-length cutting length tracking value in the shearing mode is greater than or equal to the set step length. When the difference is greater than or equal to the set step length, it is determined that the target steel feeding control mode is the steel feeding mode for positioning the entire step length; or, when the difference is less than the set step length, it is determined that the target steel feeding control mode is the steel feeding mode for adjusting the position positioning; or, when the bilateral shearing mode is not completed and the tail cutting stage is reached, it is determined whether the difference between the fixed-length target value and the fixed-length cutting length tracking value in the shearing mode is greater than or equal to the tail control threshold value. When the difference is greater than the tail control threshold value, it is determined that the target steel feeding control mode is the steel feeding mode for positioning the entire step length; or, when the difference is greater than or equal to the set step length and less than the tail control threshold value, it is determined that the target steel feeding control mode is the steel feeding mode for positioning the tail position, or, when the difference is less than the set step length, it is determined that the target steel feeding control mode is the steel feeding mode for positioning the fixed-length target value.

[0014] Optionally, the combined shear steel feeding control system also includes: a PLC corresponding to the double-sided shear, used to control the double-sided shear mode and the combined shear mode of the double-sided shear mode and the fixed-length shear mode; and a PLC corresponding to the fixed-length shear, used to control the communication between the fixed-length shear mode and the combined shear mode of the double-sided shear mode and the fixed-length shear mode and the control device.

[0015] The third aspect of the present invention also provides an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the combined shearing and feeding steel control method as described.

[0016] The fourth aspect of the present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the combined shearing and feeding steel control method as described.

[0017] Through the above technical scheme, the combined shearing steel feeding control method includes: constructing multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters, wherein the multiple shearing modes include: double-sided shearing mode, cut-to-length shearing mode, a combination mode of head cutting, edge cutting and fixed length, a combination mode of head cutting sample cutting, edge cutting and fixed length, a fixed length breaking mode and an empty mode; and according to the relationship between the double-sided shearing mode, the cut-to-length shearing mode, the combination mode of head cutting, edge cutting and fixed length, the combination mode of head cutting sample cutting, edge cutting and fixed length, and the fixed length breaking mode and the length of the tail waste strip, the target steel feeding control mode is determined from the multiple steel feeding control modes. The present invention constructs multiple steel feeding control modes through multiple shearing modes and multiple production process parameters, and further determines the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the double-sided shearing mode, the cut-to-length shearing mode and the length of the tail waste strip, so that the double-sided shearing and the cut-to-length shearing can be controlled to perform cutting at the same time to complete the complex process of the combined shearing.

[0018] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a flow chart of a combined shearing and steel feeding control method provided by the first embodiment of the present invention;

[0021] Figure 2 is a flow chart for determining a target steel delivery control mode provided by the first embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of a combined shearing and feeding steel control system provided by the second embodiment of the present invention. DETAILED DESCRIPTION

[0023] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0024] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations. In the embodiments of this application, some existing solutions in the industry such as certain software, components, and models may be mentioned, which should be considered as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0025] In order to facilitate the understanding of the technical solution of the present invention, the terms involved are explained:

[0026] Combined shearing: a combined shearing unit of rolling double shear (DSS) and cut-to-length shear (DS) for medium and thick plate production lines;

[0027] Head cutting: The cut-to-length shear completes the head cutting of the steel plate.

[0028] Tail cutting: The tail of the steel plate is cut to length.

[0029] Edge cutting: Double-sided shearing completes the shearing of both sides of the steel plate.

[0030] Broken edges: While the double-sided shear completes the shearing of both sides of the steel plate, the broken edges are also separated by the broken edge shear blades.

[0031] Sample: Cut to length to complete the sampling and shearing of the head, middle or tail of the steel plate.

[0032] Cutting: The fixed-length shearing completes the shearing of the middle part of the steel plate. Shearing the steel plate once is called two-cutting, and shearing the steel plate twice is called three-cutting.

[0033] Breaking tail knife: combined shearing process of steel plate, the last breaking mode of breaking shearing.

[0034] Rough head mode: a mode in which the steel plate is sheared in combination without head cutting.

[0035] Burr mode: Combined shearing process of steel plate, no edge cutting mode.

[0036] Empty: The combined shear does not perform the steel plate shearing action, the shear body moves to a safe position, and the steel is fed through the combined shear by the inlet and outlet pinch rollers or the inlet and outlet rollers.

[0037] Double-side shearing: Only the double-side shearing is used to complete the trimming of both sides of the steel plate. The cut-to-length shearing does not cut the head, cut the length or cut the tail.

[0038] Cutting by cut-to-length shears: Cutting the head, length or tail of the steel plate is completed only by cut-to-length shears, while double-sided shearing does not cut the edges.

[0039] Double-sided shearing and feeding linkage: After the double-sided shearing completes a step of shearing, the main motor of the double-sided shearing enters the steel feeding angle, the upper shear blade is lifted up and leaves the steel plate, the pressure plate device is lifted up, the input or output pinch roller is pressed down to clamp the steel plate and then feed it a step of shearing, then the pinch roller stops feeding the steel plate, the main motor of the double-sided shearing enters the shearing angle, and starts shearing again until the end of the steel plate, a continuous cycle of trimming and breaking of the edge of the shearing and feeding linkage process.

[0040] Cut-to-length shear and feeding linkage: After the head of the steel plate reaches the cut-to-length shear, the front and rear measuring rollers (or laser length measuring device) detect that the steel plate has reached the fixed length. The steel plate stops moving forward and the cut-to-length shear starts, cooperating with the swing roller to complete the shearing and feeding linkage process of cutting the head, breaking, cutting to length or cutting the tail of a steel plate over the entire length range.

[0041] Tail scrap length control: If the double-sided shear is performed unconditionally, the tail scrap length may sometimes exceed the set value (e.g. 1300mm) according to the positional relationship between the double-sided shear scrap blade and the tail of the thick plate. If it exceeds, the end scrap cannot be turned onto the scrap conveyor using the scrap flap. The tail scrap length is controlled within 1300mm by tail scrap length control to ensure that the tail scrap is discharged in order, so that the double-sided shearing action is not affected by scrap jamming, causing shearing accidents or quality objections.

[0042] like Figure 1 The first embodiment of the present invention provides a flow chart of a combined shearing and steel feeding control method. The combined shearing and steel feeding control method includes the following steps S10-S11.

[0043] In step S10, multiple steel feeding control modes are constructed according to multiple shearing modes and multiple production process parameters.

[0044] The multiple shearing modes include: double-sided shearing mode, cut-to-length shearing mode, a combination mode of cutting, trimming and cutting to length, a combination mode of cutting, sampling, trimming and cutting to length, a fixed-length cutting mode and a blanking mode.

[0045] Exemplarily, the process parameters of the combined shear for producing steel plates are shown in Table 1. According to the production process requirements, the shearing modes include double-sided shearing mode, cut-to-length shearing mode, a combination mode of head cutting, edge cutting and fixed length (i.e., head cutting + edge cutting + fixed length), a combination mode of head cutting, sample cutting, edge cutting and fixed length (i.e., head cutting + sample + edge cutting + fixed length) and an empty pass mode, and may also include, for example, a splitting (two-part, three-part) mode.

[0046]

[0047] Table 1

[0048] Furthermore, the double-sided shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode are both controlled by the PLC corresponding to the double-sided shearing mode, and the communication between the fixed-length shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode and the control device is controlled by the PLC corresponding to the fixed-length shearing mode.

[0049] Furthermore, constructing multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters includes: constructing multiple steel feeding control modes corresponding to the multiple shearing modes according to the multiple shearing modes and multiple production process parameters, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode.

[0050] Exemplarily, in the embodiment of the present invention, the double-sided shear and the cut-to-length shear are controlled by a set of PLCs respectively, and the cut-to-length shear cut position is used as the dividing point for tracking control of the two areas. The performance characteristics of the PLC corresponding to the double-sided shear and the PLC corresponding to the cut-to-length shear are fully utilized. During the shearing process, the double-sided shear independently completes the combined shearing and steel feeding positioning control. At the same time, the PLC corresponding to the double-sided shear completes the actions of steel plate centering, double-sided shear shearing and feeding linkage control, inlet and outlet pinch roller position control, double-sided shear main motor speed control, double-sided shear main equipment position control, etc. In the shearing and feeding linkage process of the steel plate double-sided shear and the cut-to-length shear, the input and output pinch rollers and the input and output roller steel feeding positioning control are all completed by the PLC corresponding to the double-sided shear, and the PLC corresponding to the cut-to-length shear only controls the cutting action of the cut-to-length shear.

[0051] The PLC control system corresponding to the cut-to-length shear also completes the hydraulic lubrication system of the combined shear and the communication with L2 (i.e., the control device). The two PLC control systems directly realize the field bus communication between the two PLCs through the PN coupler, maximizing the performance of the two PLCs while simplifying the control coupling process of the combined shear. Among them, L2, also known as a part of MES (manufacturing execution system) or a system closely integrated with it, is a key level in the production process. It is located between the upper-level production planning system (such as the ERP system, which is usually regarded as the L3 or L4 level) and the lower-level equipment control system (such as the PLC system, which is usually regarded as the L1 level).

[0052] In the prior art, the fixed-length shear and the double-sided shear are positioned and controlled separately, and the tracking area is divided according to the shearing functional area. Once the tail of the steel plate has passed through the double-sided shear outlet clamping roller, the shearing control setting of the double-sided shear can be made, and the shearing setting of the double-sided shear area can be executed. However, in this control, the communication between the fixed-length shear PLC and the double-sided shear PLC is cumbersome and has many interlocking signals, the control process is complicated, and there are unknown process risks. In the embodiment of the present invention, the double-sided shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode are controlled by the PLC corresponding to the double-sided shear, and the communication between the fixed-length shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode and the control device is controlled by the PLC corresponding to the fixed-length shear, thereby reducing the cumbersome communication and interlocking signals between the PLC corresponding to the fixed-length shear and the PLC corresponding to the double-sided shear, making the control process simpler and reducing unknown risks.

[0053] The multiple shearing modes and multiple production process parameters, constructing multiple steel feeding control modes corresponding to the multiple shearing modes include: constructing multiple steel feeding control modes corresponding to the multiple shearing modes according to the multiple shearing modes and multiple production process parameters, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning and a non-positioned steel feeding mode.

[0054] For example, according to the needs of multiple shearing modes and multiple production process parameters, multiple production process parameters can be obtained from the shearing list issued by L2, such as the steel plate length L, the double-sided shearing setting step length L DSSO , Cut-to-length cutting length tracking L DS , fixed length target value L 0 , cutting length L Head , tail cutting length L Tail Even though the steel feeding lengths corresponding to different shearing modes are different, the shearing list can be used to simplify different shearing modes into several typical steel feeding control modes, which are divided into a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode (i.e., an empty-pass mode).

[0055] Among them, the steel feeding mode of full step length positioning, that is, the steel plate is positioned according to the full step length in the double-sided shearing or multiple combined shearing modes including trimming. The steel feeding mode of fixed length target value positioning, that is, the steel plate is not trimmed during the shearing process, and is positioned to the fixed length target value position of the steel plate at one time. The steel feeding mode of adjusting position positioning, that is, the steel plate is in a variety of combined shearing modes including fixed length, breaking, and sample, and the trimming step length is based on the fixed length target value L 0The automatic positioning control is performed by changing the step length according to the needs. The tail position positioning steel feeding mode, that is, in response to the needs of the tail waste edge length, according to the tail tracking steel plate position, compares the relationship between the steel plate tail position, the steel plate fixed length target value and the dead zone position of the flap action, and adjusts the steel plate feeding target value according to the principle of giving priority to the fixed length target value and then controlling the steel plate tail shear point away from the flap dead zone. The non-positioning steel feeding mode, that is, the steel plate is not cut or cut to size, when the double-sided shearing machine body and the related equipment on the fixed length shearing machine are in a safe position, the steel plate passes through the combined shear at an empty speed.

[0056] In step S11, the target steel feeding control mode is determined from the multiple steel feeding control modes according to the relationship between the double-sided shearing mode, the combination mode of the cut-to-length shearing mode, the combination mode of the cut-to-length sample cutting, the cut-to-length cutting mode and the tail scrap strip length.

[0057] Furthermore, the method of determining the target steel feeding control mode from the multiple steel feeding control modes according to the relationship among the double-sided shearing mode, the cut-to-length shearing mode, the combined mode of head cutting, edge cutting and fixed length, the combined mode of head cutting, sample cutting, edge cutting and fixed length, the fixed length cutting mode and the length of the tail scrap strip includes steps S111-S113.

[0058] In step S111, when the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode, but is only the empty-pass mode, the target steel feeding control mode is determined to be the non-positioning steel feeding mode.

[0059] For example, reference Figure 2 This is a flow chart for determining the target steel feeding control mode provided by the first embodiment of the present invention. First, the shear list is obtained from L2, and then the shear mode is obtained from the shear list. When the shear mode does not belong to DSS (double-sided shear mode) and DS (cut-to-length shear mode), the target steel control mode is determined to be mode 1: non-positioned steel feeding mode.

[0060] In step S112, when the shearing mode is not a bilateral shearing mode but a cut-to-length shearing mode, the target steel feeding control mode is determined to be a steel feeding mode for positioning the cut-to-length target values ​​of head cutting, sample cutting, cut-to-length, splitting and tail cutting.

[0061] Exemplarily, when the shearing mode belongs to DS (i.e., cut-to-length shearing mode), the target steel feeding control mode is determined to be mode 4: a steel feeding mode for positioning the cut-to-length target values ​​of head cutting, sample cutting, cut-to-length, splitting, and tail cutting.

[0062] In step S113, when the shearing mode belongs to the combination mode of head cutting, edge cutting and sizing, the combination mode of head cutting, sample cutting and sizing, or belongs to the double-sided shearing mode, it is determined whether the double-sided shearing mode is completed, and the step S113 further includes S1131-S1133.

[0063] Exemplarily, when the shearing mode belongs to the DS+DSS mode or the DSS mode, it is further determined whether the bilateral shearing mode is completed, so as to further determine the target steel feeding control mode.

[0064] In step S1131, when the bilateral shearing mode is completed, the target steel feeding control mode is determined to be a steel feeding mode for positioning the fixed-length target value.

[0065] For example, reference Figure 2 When the double-sided shearing mode DSS is completed, the target steel feeding control mode is determined to be mode 4: steel feeding mode with fixed length target value positioning. In step S1132, when the double-sided shearing mode is not completed and the tail cutting stage is not reached, it is determined whether the difference between the fixed length target value in the shearing mode and the fixed length shearing length tracking value is greater than or equal to the set step length.

[0066] Further, when the difference is greater than or equal to the set step length, the target steel feeding control mode is determined to be the steel feeding mode positioned at the entire step length.

[0067] For example, when the DSS mode is not completed and the cut-length target value L 0 Tracking value L with cut length DS The difference between 0 -L DS When it is greater than or equal to a set step length (usually 900 mm-1.3 m, which can be set according to actual needs), the target steel delivery control mode is determined to be mode 2: steel delivery mode with full step length positioning.

[0068] Further, when the difference is smaller than a set step size, it is determined that the target steel delivery control mode is a steel delivery mode for adjusting position positioning.

[0069] Exemplarily, the difference is smaller than the set step size, and the target steel delivery control mode is determined to be mode 3: full-position positioning steel delivery mode.

[0070] In step S1133, when the double-sided cutting mode is not completed and the tail cutting stage is reached, it is determined whether the difference between the cut-length target value in the cutting mode and the cut-length cutting length tracking value is greater than or equal to the tail control threshold value.

[0071] For example, when the tail end is not restricted by the tail waste strip control, the cut-to-length target value L in the cut-to-length shearing mode is further determined. 0 Tracking value L with cut length DS The difference between 0 -L DS It is further determined whether the difference between the cut-length target value in the shearing mode and the cut-length shearing length tracking value is greater than or equal to the tail control threshold value (eg, 1.6 m).

[0072] Further, when the difference is greater than the tail control threshold value, it is determined that the target steel feeding control mode is a steel feeding mode with full-step positioning.

[0073] Exemplarily, when the length of the tail scrap strip exceeds the tail control threshold value, if it exceeds the value, the scrap flap cannot be used to flip the end scrap edge onto the scrap edge conveyor, then the positioning value is adjusted to the whole step length, and the target steel delivery control mode is determined to be mode 2: steel delivery mode with whole step length positioning.

[0074] Further, when the difference is greater than or equal to the set step size and less than the tail control threshold value, it is determined that the target steel feeding control mode is the tail position positioning steel feeding mode.

[0075] Exemplarily, when the tail end is restricted by the control of the tail scrap strip, the target steel feeding control mode is determined to be mode 5: tail position positioning steel feeding mode.

[0076] The embodiment of the present invention controls the length of the tail waste edge to be within a threshold value by limiting the length of the tail waste edge, thereby ensuring that the tail waste edge is discharged in sequence, and does not affect the shearing action of the double-sided shear due to the waste edge blocking, causing shearing accidents or quality objections.

[0077] Further, when the difference is smaller than the set step length, it is determined that the target steel feeding control mode is a steel feeding mode for positioning the fixed-length target value.

[0078] Exemplarily, when the difference is less than the set step length, the target steel feeding control mode is determined to be mode 4: a steel feeding mode positioned at a fixed-length target value.

[0079] Exemplarily, for the specific control method, for example, the length of the incoming steel plate for the combined shear is 39 meters, and the steel plate is divided into three sections. The steel plate is not trimmed. The process of performing fixed-length steel feeding twice and starting the fixed-length shear to cut is carried out at 13 meters and 26 meters from the head of the steel plate respectively. The length of the incoming steel plate for the combined shear is 7333 mm, and the steel plate performs a combined shear of cut head (230 mm) + specimen (80 mm) + fixed length (6923 mm). The steel plate starts positioning to the target value, and then performs edge trimming after positioning according to a step size of 1.2 meters. When reaching the cut head target value at 0.823 mm from the cut head target value, first perform the adjustment step size positioning of the adjustment part 0.573, and then perform the positioning of the fixed-length target value of 0.23; when shearing the specimen, directly perform the positioning of the fixed-length target value; then perform the full-step size positioning and the tail position positioning. After the double-sided shear completes the waste edge shearing, perform the positioning of the fixed-length target value, and start the fixed-length shear to cut the steel plate when in place.

[0080] This steel feeding and positioning control method can achieve a shearing of 25 cuts per minute for the double-sided shear with a fixed-length accuracy of 0 - 5 mm. The shearing efficiency of the double-sided shear is increased by 25%. After transforming the roller table motor from a DC motor to an AC motor, the positioning accuracy is improved from 0 - 10 mm to 0 - 5 mm.

[0081] As Figure 3 Figure 8 is a schematic structural diagram of a combined shear steel feeding control system provided by the second embodiment of the present invention. A combined shear steel feeding control system, the combined shear steel feeding control system 30 includes: a construction module 301, configured to construct a plurality of steel feeding control modes according to a plurality of shearing modes and a plurality of production process parameters, where the plurality of shearing modes include: double-sided shearing mode, fixed-length shear shearing mode, combined mode of cut head and edge trimming and fixed length, combined mode of cut head, specimen, edge trimming and fixed length, and passing-through mode; and a determination module 302, configured to determine a target steel feeding control mode from the plurality of steel feeding control modes according to the relationship between the double-sided shearing mode, the fixed-length shear shearing mode, and the length of the tail waste strip.

[0082] Further, the construction module 301, configured to construct a plurality of steel feeding control modes according to a plurality of shearing modes and a plurality of production process parameters, includes: constructing a plurality of steel feeding control modes corresponding to the plurality of shearing modes according to the plurality of shearing modes and a plurality of production process parameters, where the plurality of steel feeding control modes include: steel feeding mode of full-step size positioning, steel feeding mode of fixed-length target value positioning, steel feeding mode of adjustment position positioning, steel feeding mode of tail position positioning, and steel feeding mode of no positioning.

[0083] Further, the determination module 302 is used to determine the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the bilateral shearing mode, the cut-to-length shearing mode, the combination mode of the head cutting, edge cutting and fixed length, the combination mode of the head cutting sample, edge cutting and fixed length, the fixed length cutting mode and the length of the tail waste strip, including: when the shearing mode does not belong to the bilateral shearing mode and / or the cut-to-length shearing mode, determining the target steel feeding control mode as a non-positioned steel feeding mode; or, when the shearing mode belongs to the cut-to-length shearing mode, determining the target steel feeding control mode as a steel feeding mode with a fixed length target value positioned; or, when the shearing mode belongs to the bilateral shearing mode and the cut-to-length shearing mode or belongs to the bilateral shearing mode, judging whether the bilateral shearing mode is completed, and when the bilateral shearing mode is completed, determining the target steel feeding control mode as a steel feeding mode with a fixed length target value positioned; or, when the bilateral shearing mode is not completed In this case, it is determined whether the length of the tail scrap strip exceeds the set value. When the length of the tail scrap strip exceeds the set value, it is determined that the target steel feeding control mode is the steel feeding mode with full step length positioning; or, when the length of the tail scrap strip does not exceed the set value, it is determined whether the tail end is restricted by the control of the tail scrap strip. When the tail end is restricted by the control of the tail scrap strip, it is determined that the target steel feeding control mode is the steel feeding mode with tail position positioning; or, when the tail end is not restricted by the control of the tail scrap strip, it is determined that the difference between the fixed-length target value and the fixed-length cutting length tracking value in the fixed-length shearing mode is determined. When the difference is less than or equal to half of the set step length, it is determined that the target steel feeding control mode is the steel feeding mode with fixed-length target value positioning; or, when the difference is greater than half of the set step length and less than or equal to one set step length, it is determined that the target steel feeding control mode is the steel feeding mode with adjusted position positioning.

[0084] Furthermore, the combined shear steel feeding control system also includes: a PLC corresponding to the double-sided shear, used to control the double-sided shear mode and the combined shear mode of the double-sided shear mode and the fixed-length shear mode; and a PLC corresponding to the fixed-length shear, used to control the communication between the fixed-length shear mode and the combined shear mode of the double-sided shear mode and the fixed-length shear mode and the control device.

[0085] The second embodiment of the present invention provides a combined shearing and feeding steel control system to implement the combined shearing and feeding steel control method as described above and the technical effects achieved are the same as those of the first embodiment, which will not be repeated here.

[0086] The third embodiment of the present invention also provides an electronic device, a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the combined shearing and feeding steel control method as described.

[0087] The third embodiment of the present invention provides an electronic device to implement the combined shearing and feeding steel control method as described above and the technical effect achieved is the same as that of the first embodiment, which will not be repeated here.

[0088] The fourth embodiment of the present invention also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the combined shearing and feeding steel control method as described above is implemented.

[0089] The fourth embodiment of the present invention provides a computer program product to implement the combined shearing and feeding steel control method as described above and the technical effect achieved is the same as that of the first embodiment, which will not be repeated here.

[0090] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0091] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0094] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0095] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0096] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0097] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0098] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A combined shearing and feeding steel control method, characterized in that: The combined shearing and steel feeding control method comprises: According to multiple shearing modes and multiple production process parameters, multiple steel feeding control modes are constructed, wherein the multiple shearing modes include: double-sided shearing mode, fixed-length shearing mode, a combination mode of head cutting, edge cutting and fixed-length, a combination mode of head cutting, sample cutting, edge cutting and fixed-length, fixed-length breaking mode and empty-pass mode; and, According to the relationship between the double-sided shearing mode, the cut-to-length shearing mode, the combined mode of head cutting, edge cutting and fixed length, the combined mode of head cutting, sample cutting, edge cutting and fixed length, the fixed length cutting mode and the length of the tail scrap strip, the target steel feeding control mode is determined from the multiple steel feeding control modes.

2. The combined shearing and feeding steel control method according to claim 1, characterized in that: The construction of multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters includes: According to the multiple shearing modes and multiple production process parameters, multiple steel feeding control modes corresponding to the multiple shearing modes are constructed, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode.

3. The combined shearing and feeding steel control method according to claim 2, characterized in that: Determining the target steel feeding control mode from the plurality of steel feeding control modes according to the relationship between the double-sided shearing mode, the cut-to-length shearing mode, the combined mode of the head cutting, the edge cutting and the length cutting mode, the combined mode of the head cutting, the sample cutting, the edge cutting and the length cutting mode, and the tail scrap strip length includes: When the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode, but is only the empty-pass mode, the target steel feeding control mode is determined to be the non-positioning steel feeding mode; or, When the shearing mode does not belong to the bilateral shearing mode but belongs to the cut-to-length shearing mode, the target steel feeding control mode is determined to be a steel feeding mode for positioning the cut-to-length target values ​​of head cutting, sample cutting, cut-to-length, splitting and tail cutting; or, When the shearing mode belongs to the combination mode of head cutting, edge cutting and fixed length, the combination mode of head cutting, sample cutting, edge cutting and fixed length, or belongs to the double-sided shearing mode, it is judged whether the double-sided shearing mode is completed, When the double-sided shearing mode is completed, the target steel feeding control mode is determined to be a steel feeding mode for positioning the fixed length target value; or, When the double-sided shearing mode is not completed and the tail cutting stage is not reached, it is determined whether the difference between the cut-length target value and the cut-length tracking value in the shearing mode is greater than or equal to the set step length. When the difference is greater than or equal to the set step length, the target steel feeding control mode is determined to be the steel feeding mode positioned by the full step length; or, When the difference is less than the set step length, the target steel delivery control mode is determined to be a steel delivery mode for adjusting the position positioning; or, When the bilateral shearing mode is not completed and the tail cutting stage is reached, it is determined whether the difference between the cut-length target value in the shearing mode and the cut-length cutting length tracking value is greater than or equal to the tail control threshold value. When the difference is greater than the tail control threshold value, the target steel feeding control mode is determined to be a steel feeding mode with full step length positioning; or, When the difference is greater than or equal to the set step size and less than the tail control threshold value, the target steel feeding control mode is determined to be the tail position positioning steel feeding mode, or, When the difference is smaller than the set step length, it is determined that the target steel feeding control mode is a steel feeding mode for positioning the fixed-length target value.

4. The combined shearing and feeding steel control method according to claim 1, characterized in that: The double-sided shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode are both controlled by the PLC corresponding to the double-sided shearing mode, and the communication between the fixed-length shearing mode and the combined shearing mode of the double-sided shearing mode and the fixed-length shearing mode and the control device is controlled by the PLC corresponding to the fixed-length shearing mode.

5. A combined shearing and feeding steel control system, characterized in that: The combined shearing and steel feeding control system comprises: A construction module is used to construct multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters, wherein the multiple shearing modes include: a double-sided shearing mode, a cut-to-length shearing mode, a combination mode of cutting, trimming and trimming, a combination mode of cutting, sampling, trimming and trimming, and a blanking mode; and, A determination module is used to determine a target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the double-sided shearing mode, the combination mode of the head cutting, edge cutting and fixed length shearing mode, the combination mode of the head cutting sample, edge cutting and fixed length cutting mode and the length of the tail waste strip.

6. The combined shearing and feeding steel control system according to claim 5 is characterized in that: The construction module is used to construct multiple steel feeding control modes according to multiple shearing modes and multiple production process parameters, including: According to the multiple shearing modes and multiple production process parameters, multiple steel feeding control modes corresponding to the multiple shearing modes are constructed, wherein the multiple steel feeding control modes include: a steel feeding mode with full-step length positioning, a steel feeding mode with fixed-length target value positioning, a steel feeding mode with adjusted position positioning, a steel feeding mode with tail position positioning, and a non-positioned steel feeding mode.

7. The combined shearing and feeding steel control system according to claim 6 is characterized in that: The determination module is used to determine the target steel feeding control mode from the multiple steel feeding control modes according to the relationship between the double-sided shearing mode, the cut-to-length shearing mode, the combined mode of the head cutting, the edge cutting and the length cutting mode, the combined mode of the head cutting, the sample cutting, the edge cutting and the length cutting mode, and the tail scrap strip length, including: When the shearing mode does not belong to the bilateral shearing mode and the cut-to-length shearing mode, but is only the empty-passing mode, the target steel feeding control mode is determined to be the non-positioning steel feeding mode; or, When the shearing mode does not belong to the bilateral shearing mode but belongs to the cut-to-length shearing mode, the target steel feeding control mode is determined to be a steel feeding mode for positioning the cut-to-length target values ​​of head cutting, sample cutting, cut-to-length, splitting and tail cutting; or, When the shearing mode belongs to the combination mode of head cutting, edge cutting, fixed length cutting and tail cutting, the combination mode of head cutting, sample cutting, edge cutting, fixed length cutting and tail cutting, or belongs to the double-sided shearing mode, it is judged whether the double-sided shearing mode is completed, When the double-sided shearing mode is completed, the target steel feeding control mode is determined to be a steel feeding mode for positioning the fixed length target value; or, When the double-sided shearing mode is not completed and the tail cutting stage is not reached, it is determined whether the difference between the cut-length target value and the cut-length tracking value in the shearing mode is greater than or equal to the set step length. When the difference is greater than or equal to the set step length, the target steel feeding control mode is determined to be the steel feeding mode positioned by the full step length; or, When the difference is less than the set step length, the target steel delivery control mode is determined to be a steel delivery mode for adjusting the position positioning; or, When the bilateral shearing mode is not completed and the tail cutting stage is reached, it is determined whether the difference between the cut-length target value in the shearing mode and the cut-length cutting length tracking value is greater than or equal to the tail control threshold value. When the difference is greater than the tail control threshold value, the target steel feeding control mode is determined to be a steel feeding mode with full step length positioning; or, When the difference is greater than or equal to the set step size and less than the tail control threshold value, the target steel feeding control mode is determined to be the tail position positioning steel feeding mode, or, When the difference is smaller than the set step length, it is determined that the target steel feeding control mode is a steel feeding mode for positioning the fixed-length target value.

8. The combined shearing and feeding steel control system according to claim 5, characterized in that: The combined shearing and steel feeding control system also includes: The PLC corresponding to the double-sided shear is used to control the double-sided shearing mode and the combined shearing mode of the double-sided shearing mode and the cut-to-length shearing mode; and The PLC corresponding to the cut-to-length shear is used to control the communication between the cut-to-length shear mode and the combined cut-to-length shear mode of the double-sided shear mode and the cut-to-length shear mode and the control device.

9. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the combined shearing and feeding steel control method as described in any one of claims 1-4.

10. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, implements the combined shearing and feeding steel control method as described in any one of claims 1 to 4.

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