Control method and control system of straight head machine, electronic equipment and storage medium

Abstract

The invention relates to a control method and system of a straight head machine, electronic equipment and a storage medium. The control method comprises the steps that the thickness H of a strip is obtained; obtaining a vertical distance A between the head of the strip and the distance measurement reference after the head of the strip passes through a straight head machine; the warping value V of the head of the strip after passing through the unbender is obtained, V = B-H-A, and B is the vertical distance between the distance measuring reference and the outlet of the unbender; judging the relationship between the warping value V and a preset warping threshold value V0; when the warping value V is greater than the warping threshold value V0, carrying out secondary straightening; and when the warping value V is smaller than or equal to the warping threshold value V0, enabling the strip to pass through a straight head machine. According to the method, only two simple parameters need to be obtained; meanwhile, only simple operation of subtraction and comparison of a single value need to be carried out, and therefore the problems that in the prior art, when straightening control is carried out on the unbender, the related system is complex, operation is inconvenient, and cost input is high can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of head straightening machines, and in particular to a control method, a control system, an electronic device and a storage medium for a head straightening machine. Background Art

[0002] The straightening machine can be used as a device for straightening strips, for example, it can be used to straighten the ends of steel strips. In actual operation, the straightening machine usually first obtains the ideal state of the steel strip straightening and stores it when performing the straightening operation; then obtains the actual parameters of the steel strip, compares the ideal state with the actual state, and calculates the required control parameters; then controls the straightening machine to perform the straightening operation on the steel strip according to the calculated control parameters to ensure the straightening effect. Or after the straightening operation, the straightening machine obtains the actual state of the steel strip again and compares the actual state of the steel strip with the ideal state; when the deviation value between the actual state and the ideal state is within the set threshold, the steel strip straightening is judged to be qualified, otherwise it is unqualified. However, in the prior art, the control method of the straightening machine often involves the acquisition of too many parameters, such as the need to simultaneously obtain the actual thickness, actual yield strength, actual size, etc. of the steel strip; and the process of obtaining parameters often needs to be completed with the help of more sophisticated instruments, such as visual systems, devices for tensile testing, etc. When completing the comparison between the actual state and the ideal state, it is also necessary to use very complex algorithms for calculation. It is not difficult to see from the above that the control system of the existing straightening machine is relatively complex, which causes inconvenience in performing related operations; at the same time, a large amount of cost is also required. Summary of the invention

[0003] Based on this, the present application provides a control method, control system, electronic device and storage medium for a straightening machine to improve the problems of complex system, inconvenient operation and high cost involved in the straightening control of the straightening machine in the prior art.

[0004] In a first aspect, the present application provides a control method for a straightening machine, wherein the control method for the straightening machine is used to straighten a strip, and the control method for the straightening machine comprises:

[0005] Obtaining the thickness H of the strip;

[0006] After the head of the strip passes through the straightening machine, a vertical distance A between the head of the strip and a distance measuring reference is obtained; wherein the distance measuring reference is arranged above the exit of the straightening machine;

[0007] According to the obtained thickness H of the strip and the vertical distance A between the head of the strip and the distance measurement reference, the warpage value V of the head of the strip after passing through the straightening machine is obtained. The mathematical expression of the warpage value V is obtained as follows:

[0008] V=BHA

[0009] Wherein, B is the vertical distance between the distance measurement reference and the exit of the straight head machine;

[0010] Determine the relationship between the warping value V and the preset warping threshold V0:

[0011] When the warping value V is greater than the warping threshold V0, the straightening machine is controlled to rewind so that the strip returns to the entrance of the straightening machine for secondary straightening; when the warping value V is less than or equal to the warping threshold V0, the strip continues to pass through the straightening machine.

[0012] In one embodiment, obtaining the strip thickness H includes:

[0013] Setting m thickness measuring points within the range corresponding to the strip;

[0014] Obtain the thickness H1, H2, ..., Hm of the strip at the m thickness measurement points respectively;

[0015] The thickness H of the strip is obtained according to the thickness H1, H2, ..., Hm of the strip. The thickness H of the strip is mathematically expressed as:

[0016] H=(H1+H2+……+Hm) / m.

[0017] In one embodiment, obtaining a vertical distance A between the head of the strip and a distance measurement reference after the head of the strip passes through the straightening machine comprises:

[0018] Setting n distance measuring points at the head of the strip along the width direction;

[0019] Obtaining the vertical distances A1, A2, ..., An between the head of the strip and the distance measurement reference at the n distance measurement points respectively;

[0020] The vertical distance A between the head of the strip and the distance measurement reference is obtained according to the vertical distances A1, A2, ..., An between the head of the strip and the distance measurement reference. The vertical distance between the head of the strip and the distance measurement reference is mathematically expressed as:

[0021] A=(A1+A2+……+An) / n.

[0022] In one embodiment, the method for obtaining the strip thickness H is: measuring the strip thickness H by a thickness measuring sensor.

[0023] In one embodiment, the vertical distance A between the head of the strip and the distance measurement reference is obtained by measuring the vertical distance A between the head of the strip and the distance measurement reference by a distance measurement sensor.

[0024] In one embodiment, the vertical distance B between the distance measuring reference and the exit of the straightening machine is the vertical distance between the distance measuring reference and the lower roller of the straightening machine, and the lower roller of the straightening machine keeps a fixed position in the vertical direction.

[0025] In one embodiment, when the warping value V is greater than the warping threshold V0, the straightening machine is controlled to rewind so that the strip returns to the entrance of the straightening machine for secondary straightening, including:

[0026] When the warping value V is greater than the warping threshold V0, the straight head machine is controlled to rewind;

[0027] Adjusting the parameters of the straightening machine according to the warping value V obtained;

[0028] The strip is returned to the entrance of the straightening machine for secondary straightening.

[0029] In a second aspect, the present application provides a control system of a straightening machine, the control system of the straightening machine is used to straighten a strip, and the control system of the straightening machine includes:

[0030] A thickness measuring module, which is used to obtain the thickness H of the strip;

[0031] A distance measuring module, which is used to obtain a vertical distance A between the head of the strip and a distance measuring reference after the head of the strip passes through the straightening machine; wherein the distance measuring reference is arranged obliquely above the exit of the straightening machine;

[0032] A storage module, which is used for the vertical distance B between the distance measurement reference and the exit of the straightening machine and a preset warping threshold V0;

[0033] A calculation module is used to obtain the warpage value V of the head of the strip after it passes through the straightening machine according to the obtained thickness H of the strip and the vertical distance A between the head of the strip and the distance measurement reference. The mathematical expression of the warpage value V is:

[0034] V = BHA;

[0035] A judgment module is used to judge the relationship between the warping value V and a preset warping threshold V0:

[0036] The straightening module is used to make the strip return to the entrance of the straightening machine for secondary straightening when the warping value V is greater than the warping threshold V0; and to make the strip continue to pass through the straightening machine when the warping value V is less than or equal to the warping threshold V0.

[0037] In a third aspect, the present application provides an electronic device, the electronic device comprising:

[0038] memory for storing programs; and

[0039] The processor is used to execute any one of the control methods of the straightening machine provided in the present application by calling the program stored in the memory.

[0040] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute any one of the control methods of the straightening machine provided in the present application.

[0041] This application only needs to obtain two simple parameters, and does not require high-cost precision instruments such as visual systems and devices for tensile testing; at the same time, this application only needs to perform simple subtraction operations and compare single values. No complex control system is required to complete the operation and comparison process, which can avoid a large amount of cost investment. Therefore, this application can effectively improve the problems of complex systems, inconvenient operations and high cost investment involved in the prior art when controlling the straightening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flow chart of a control method for a straightening machine provided in Embodiment 1 of the present application;

[0043] Figure 2 A schematic diagram of a straightening machine to which the control method for the straightening machine provided in Embodiment 1 of the present application is applicable when performing a straightening operation;

[0044] Figure 3 A partial schematic diagram of a straightening machine to which the control method of the straightening machine provided in the first embodiment of the present application is applicable when performing a straightening operation;

[0045] Figure 4 This is a schematic diagram of the structure of the control system of the straightening machine provided in Example 2 of the present application.

[0046] Attached figures: 100, straightening machine; 110, conveyor belt; 120, lower roller; 200, strip; 300, thickness sensor; 400, distance sensor; 510, thickness measurement module; 520, distance measurement module; 530, storage module; 540, calculation module; 550, judgment module; 560, straightening module. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.

[0049] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0050] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "vertical", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0051] Embodiment 1

[0052] Embodiment 1 of the present application provides a control method for a straightening machine, such as Figures 1 to 3 As shown, the control method of the straightening machine is used to straighten the strip 200, and the control method of the straightening machine includes the following steps:

[0053] S1, obtaining the thickness H of the strip 200;

[0054] S2, obtaining a vertical distance A between the head of the strip 200 and a distance measurement reference after the head of the strip 200 passes through the straightening machine 100; wherein the distance measurement reference is set obliquely above the exit of the straightening machine 100;

[0055] S3. Obtain the warpage value V of the head of the strip 200 after it passes through the straightening machine 100 according to the obtained thickness H of the strip 200 and the vertical distance A between the head of the strip 200 and the distance measurement reference. The mathematical expression of the warpage value V is:

[0056] V=BHA

[0057] Wherein, B is the vertical distance between the distance measurement reference and the exit of the straight head machine 100;

[0058] S4. Determine the relationship between the warping value V and the preset warping threshold V0:

[0059] When the warping value V is greater than the warping threshold V0, the straightening machine 100 is controlled to rewind so that the strip 200 returns to the entrance of the straightening machine 100 for secondary straightening; when the warping value V is less than or equal to the warping threshold V0, the strip 200 continues to pass through the straightening machine 100.

[0060] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, it is exemplarily explained that in step S1, the straightening machine 100 may include a conveyor belt 110, and the strip 200 may be laid flat on the conveyor belt 110 and horizontally transported by the conveyor belt 110 to pass horizontally through the straightening machine 100, thereby facilitating the control of the straightening effect of the straightening machine 100. The strip 200 is rectangular when laid flat, and its length direction is the transmission direction of the conveyor belt 110, and its width direction is the same as the width direction of the conveyor belt 110. When the straightening operation is performed, the thickness of the strip 200 can be obtained before the head of the strip 200 enters the straightening machine 100. It is not difficult to understand that the thickness of the strip 200 is the distance between the two sides of the strip 200 in the vertical direction. The head of the strip 200 is the upstream end of the strip 200 along the conveying direction of the conveyor belt 110. When the strip 200 is straightened, its head enters the straightening machine 100 first. The thickness of the strip 200 can be indicated by the mark “H”, which is only for the convenience of explaining the present application and is not used to impose any limitation on the strip 200 ; the same applies to the marks after the present application.

[0061] like Figure 2 and Figure 3 As shown, in step S2, after the thickness H of the strip 200 is obtained, the head of the strip 200 is sent to the straightening machine 100 for straightening. When the straightening machine 100 straightens the head of the strip 200 and the head of the strip 200 passes through the straightening machine 100, the vertical distance A between the horizontal extension line of the head of the strip 200 and the preset distance measurement reference is obtained. The preset distance measurement reference can be the reference position of the device for measuring the vertical distance A, which can be specifically set obliquely above the exit of the straightening machine 100, and the lateral distance and vertical distance between the device and the exit of the straightening machine 100 can be reasonably set according to actual needs. The device obtains the vertical distance between itself and the head of the strip 200, that is, the aforementioned vertical distance A.

[0062] In step S3, after obtaining the vertical distance A between the head of the strip 200 and the distance measurement reference, the warpage value V of the head of the strip 200 after passing through the straightening machine 100 can be obtained according to the thickness H and the vertical distance A. The mathematical expression of the warpage value V is:

[0063] V=BHA

[0064] Wherein, B is a constant, which may be the vertical distance between the distance measurement reference and the exit of the straight head machine 100 .

[0065] It is not difficult to understand that the value of the warping value V can be a positive number, for example, the head of the strip 200 is tilted upward and warped significantly before straightening, and at this time B is greater than the sum of H and A; it can also be a negative number, for example, the head of the strip 200 is tilted downward and warped before straightening, and at this time B is less than A; of course, it can also be 0, for example, the head of the strip 200 is tilted upward and warped slightly before straightening, and at this time B is equal to the sum of H and A.

[0066] In step S4, after the warpage value V is obtained according to the mathematical expression V=BHA, it is compared with the preset warpage threshold V0 to determine whether the straightening of the head of the strip 200 by the straightening machine 100 is qualified.

[0067] like Figure 3 As shown, in this embodiment, it can be assumed that the head of the strip 200 is tilted upward before entering the straightening machine 100, and the shape of the tilt is linear, and the length of the tilted section can be L; at the same time, the angle between the head of the strip 200 and the conveyor belt 110 is set to θ, then according to the Pythagorean theorem, the vertical distance between the head of the strip 200 and the conveyor belt 110 is L*si nθ.

[0068] When the head of the strip 200 passes through the straightening machine 100 and is straightened by the straightening machine 100, the value of θ decreases to θ′; at this time, the distance L*sinθ between the head of the strip 200 and the conveyor belt 110 decreases. When the strip 200 is completely straightened, θ′ is 0; at this time, the value of the distance reduction between the head of the strip 200 and the conveyor belt 110 is L*sinθ. It is not difficult to understand that the value of the distance reduction between the head of the strip 200 and the conveyor belt 110 is between 0 and L*sinθ. Correspondingly, the vertical distance A between the head of the strip 200 and the distance measurement reference increases after passing through the straightening machine 100, and the value of the increase is the value of the distance reduction between the strip 200 and the conveyor belt 110.

[0069] In this embodiment, the mathematical expression V=BHA can accurately reflect the straightening law when the head of the strip 200 is warped, that is, the vertical distance B is a constant. Similarly, for the same strip 200, its thickness H is not affected by the straightening effect of the straightening machine 100 and is a constant. When the straightening effect of the straightening machine 100 is better, the value of θ decreases more, and the distance between the head of the strip 200 and the conveyor belt 110 is closer to 0; and correspondingly, the value of the vertical distance A increases closer to L*si nθ, that is, the greater the increase. According to the mathematical expression V=BHA, when the value of A increases, the value of V decreases. Therefore, according to the above, when the straightening effect of the straightening machine 100 is better, the value of A is larger and the value of V is smaller. Conversely, when the straightening effect of the straightening machine 100 is worse, the value of V is larger. By comparing the warpage value V with the warpage threshold V0, it can be determined whether the straightening effect of the straightening machine 100 is qualified. That is, when V is less than or equal to V0, the straightening is qualified, and the conveyor belt 110 can further convey the strip 200 through the straightening machine 100. When V is greater than V0, the straightening is unqualified, and the conveyor belt 110 runs in the reverse direction so that the strip 200 returns to the entrance of the straightening machine 100, and then performs secondary straightening.

[0070] In summary, the present application obtains the thickness H of the strip 200 and the vertical distance A between the head of the strip 200 and the distance measurement reference after the head of the strip 200 passes through the straightening machine 100, and presets the vertical distance B between the distance measurement reference and the exit of the straightening machine 100 and the warping threshold V0, and then obtains the warping value V of the head of the strip 200 after passing through the straightening machine 100 through the mathematical expression V=BHA, and can judge whether the straightening of the head of the strip 200 by the straightening machine 100 is qualified by judging the relationship between the warping value V and the warping threshold V0. The present application only needs to obtain two simple parameters, and does not require high-cost precision instruments such as visual systems and devices for tensile testing; at the same time, the present application only needs to perform simple subtraction operations and single value comparisons, and the completion of the operation and comparison process does not require a complex control system, which can avoid a large amount of cost investment. Therefore, the present application can effectively improve the problems of complex systems, inconvenient operations and high cost investment involved in the straightening control of the straightening machine 100 in the prior art.

[0071] Specifically, obtaining the thickness H of the strip 200 (i.e., step S1) includes the following steps:

[0072] S11, setting m thickness measuring points within the range corresponding to the strip 200;

[0073] S12, obtaining thicknesses H1, H2, ..., Hm of the strip 200 at m thickness measurement points respectively;

[0074] S13. Obtain the thickness H of the strip 200 according to the thicknesses H1, H2, ..., Hm of the strip 200. The thickness H of the strip 200 is mathematically expressed as:

[0075] H=(H1+H2+……+Hm) / m.

[0076] like Figure 2 As shown, in this embodiment, it is exemplarily explained that when obtaining the thickness of the strip 200, it adopts a method of obtaining the average value of several measured values. In step S11, the thickness of the strip 200 can be obtained at a thickness measuring point, and the thickness measuring point can be set on one side of the width direction of the strip 200. The thickness measuring points can be set to m, and the m thickness measuring points can be set at intervals along the width direction of the strip 200. m can be a positive integer greater than or equal to 2, that is, at least 2 thickness measuring points are set. When the strip 200 moves close to the straightening machine 100 and moves through m thickness measuring points, the m thickness measuring points respectively obtain the thickness of the strip. In step S12, at each thickness measuring point, a measurement value of the thickness of the strip 200 can be obtained; in this embodiment, a total of m measurement values, namely H1, H2, ..., Hm. In step 13, the average value of the thickness of the strip 200 is obtained according to the m measured values, that is, the value H, which is mathematically expressed as H=(H1+H2+...+Hm) / m.

[0077] It can be understood that, in this embodiment, the thickness H of the strip 200 is obtained by obtaining a plurality of measurement values ​​and then taking an average value, which can improve the accuracy of obtaining the thickness H of the strip 200.

[0078] Specifically, after the head of the strip 200 passes through the straightening machine 100, the vertical distance A between the head of the strip 200 and the distance measurement reference is obtained (i.e., step S2), including the following steps:

[0079] S21, setting n distance measuring points at the head of the strip 200 along the width direction;

[0080] S22, obtaining vertical distances A1, A2, ..., An between the head of the strip 200 and a distance measurement reference at n distance measurement points respectively;

[0081] S23, according to the vertical distances A1, A2, ..., An between the head of the strip 200 and the distance measurement reference, the vertical distance A between the head of the strip 200 and the distance measurement reference is obtained, and the mathematical expression of the vertical distance between the head of the strip 200 and the distance measurement reference is obtained as:

[0082] A=(A1+A2+……+An) / n.

[0083] like Figure 2 and Figure 3As shown, in this embodiment, it is exemplarily explained that when the head of the strip 200 passes through the straightening machine 100 and the vertical distance A between the head of the strip 200 and the distance measurement reference is obtained, it also adopts a method of obtaining the average value of several measured values. In step S21, the vertical distance between the head of the strip 200 and the distance measurement reference can be obtained at the distance measurement point, and the distance measurement point can be set at the height where the distance measurement reference is located. The distance measurement points can be set to n, and the n distance measurement points can be distributed at intervals along the width direction on the head of the strip 200 at the height where the distance measurement reference is located, and can be set at the same position in the transmission direction of the conveyor belt 110. n can also be a positive integer greater than or equal to 2, that is, at least 2 distance measurement points are set. In step S22, at each distance measurement point, a measurement value of the vertical distance between the head of the strip 200 and the distance measurement reference can be obtained; in this embodiment, a total of n measurement values, namely A1, A2, ..., An. In step S23, the average value of the vertical distance between the head of the strip 200 and the distance measurement reference is obtained according to the n measured values, that is, the value A, which is mathematically expressed as A=(A1+A2+...+An) / n.

[0084] It can be understood that this embodiment obtains the vertical distance A between the head of the strip 200 and the distance measurement reference by obtaining a plurality of measurement values ​​and then taking the average value, which can improve the accuracy of obtaining the vertical distance A between the head of the strip 200 and the distance measurement reference.

[0085] Specifically, the method for obtaining the thickness H of the strip 200 is: measuring the thickness H of the strip 200 by using the thickness measuring sensor 300 .

[0086] like Figure 2 As shown, in this embodiment, the thickness sensor 300 can be arranged just above the entrance of the straightening machine 100, that is, the thickness measurement point, which can be used to obtain the thickness H of the strip 200 before the head of the strip 200 enters the straightening machine 100. The principle of the thickness sensor 300 can be based on magnetic induction, eddy current, capacitance, ultrasound, laser and other technologies, which are not limited here, and any device that can sense the thickness of the object being measured and convert it into a usable output signal, such as an analog current and voltage signal or a digital signal can be used.

[0087] It is not difficult to understand that the thickness sensor 300 has a relatively simple structure and a relatively low cost, and thus this embodiment can effectively improve the problem of high cost investment.

[0088] Specifically, the vertical distance A between the head of the strip 200 and the distance measurement reference is obtained by measuring the vertical distance A between the head of the strip 200 and the distance measurement reference by the distance measurement sensor 400 .

[0089] like Figure 2 and Figure 3 As shown, in this embodiment, the distance measuring sensor 400 can be arranged at the distance measuring point, that is, the position where the distance measuring reference is located, and is used to obtain the vertical distance A between the head of the strip 200 and the distance measuring reference after the head of the strip 200 passes through the straightening machine 100. The principle of the distance measuring sensor 400 can be based on the time-of-flight method, by emitting particularly short laser pulses or light pulses, and measuring the time difference between these pulses from emission to reflection to calculate the distance to the object, and the pulse form is not limited here, for example, it can be a laser distance measuring sensor 400, an ultrasonic distance measuring sensor 400 or an infrared distance measuring sensor 400, etc.

[0090] It can be understood that the distance measuring sensor 400 also has a relatively simple structure and a relatively low cost, and thus this embodiment can further effectively improve the problem of high cost investment.

[0091] Specifically, the vertical distance B between the distance measurement reference and the exit of the straightening machine 100 is the vertical distance between the distance measurement reference and the lower roller 120 of the straightening machine 100 , and the lower roller 120 of the straightening machine 100 keeps a fixed position in the vertical direction.

[0092] like Figure 3 As shown, in this embodiment, the vertical distance B can be the vertical distance between the distance measurement reference and the lower roller 120 of the straightening machine 100, and specifically can be the vertical distance from the distance measurement reference to the axis of the lower roller 120 or the top side of the lower roller 120. In this embodiment, when the lower roller 120 of the straightening machine 100 is rotatable, the position is kept fixed relative to the vertical direction. Based on this, the vertical distance B can be kept constant; at the same time, the vertical distance A can accurately reflect the straightening effect of the straightening machine 100 on the head of the strip 200.

[0093] Specifically, when the warping value V is greater than the warping threshold value V0, the straightening machine 100 is controlled to rewind, so that the strip 200 returns to the entrance of the straightening machine 100 for secondary straightening (i.e., step S4), including the following steps:

[0094] S41, when the warping value V is greater than the warping threshold value V0, the straightening machine 100 is controlled to rewind;

[0095] S42, adjusting the parameters of the straightening machine 100 according to the obtained warpage value V;

[0096] S43, the strip 200 is returned to the entrance of the straightening machine 100 for secondary straightening.

[0097] like Figure 2As shown, in this embodiment, it is exemplarily explained that in step S41, when it is judged that the warpage value V is greater than the preset warpage threshold value V0, and the straightening effect of the straightening machine 100 on the head of the strip 200 is unqualified, the straightening machine 100 is controlled to rewind, that is, the conveyor belt 110 is controlled to be transmitted in the reverse direction, so that the strip 200 returns to the entrance of the straightening machine 100. In step S42, when the strip 200 returns to the entrance of the straightening machine 100, the parameters of the straightening machine 100 are readjusted, for example, the position of the upper roller of the straightening machine 100 is adjusted to adjust the straightening effect of the straightening machine 100 on the head of the strip 200. The adjustment of the parameters of the straightening machine 100 is based on the obtained warpage value V to ensure the straightening effect of the straightening machine 100 when the straightening machine 100 performs secondary straightening on the head of the strip 200. In step S43 , after the parameters of the straightening machine 100 are readjusted, the strip 200 is fed back into the straightening machine 100 .

[0098] It can be understood that, when this embodiment determines that the straightening effect of the straightening machine on the head of the strip 200 is unsatisfactory, the parameters of the straightening machine 100 are adjusted according to the obtained warping value V and then the head of the strip 200 is straightened for the second time, which can ensure the effect of the secondary straightening of the straightening machine 100.

[0099] Embodiment 2

[0100] Embodiment 2 of the present application provides a control system for a straightening machine, such as Figure 4 As shown, the control system of the straightening machine is used to straighten the strip 200, and the control system of the straightening machine includes:

[0101] A thickness measurement module 510, which is used to obtain the thickness H of the strip 200;

[0102] A distance measuring module 520, which is used to obtain a vertical distance A between the head of the strip 200 and a distance measuring reference after the head of the strip 200 passes through the straightening machine 100; wherein the distance measuring reference is set obliquely above the exit of the straightening machine 100;

[0103] A storage module 530, which is used to measure the vertical distance B between the distance reference and the exit of the straightening machine 100 and a preset warping threshold V0;

[0104] The calculation module 540 is used to obtain the warpage value V of the head of the strip 200 after passing through the straightening machine 100 according to the obtained thickness H of the strip 200 and the vertical distance A between the head of the strip 200 and the distance measurement reference. The mathematical expression of the warpage value V is:

[0105] V = BHA;

[0106] The judgment module 550 is used to judge the relationship between the warping value V and the preset warping threshold V0:

[0107] The straightening module 560 is used to make the strip 200 return to the entrance of the straightening machine 100 for secondary straightening when the warping value V is greater than the warping threshold V0; and to make the strip 200 continue to pass through the straightening machine 100 when the warping value V is less than or equal to the warping threshold V0.

[0108] like Figure 2 and Figure 4 As shown, in this embodiment, for example, the thickness measuring module 510 can be a thickness measuring sensor 300, and the distance measuring module 520 can be a distance measuring sensor 400, which can be electrically connected to the calculation module 540, and can transmit the obtained thickness H of the strip 200 and the vertical distance A between the head of the strip 200 and the distance measuring reference to the calculation module 540; and the storage module 530 can be electrically connected to the calculation module 540, and the storage module 530 can transmit the vertical distance B to the calculation module 540, and the calculation module 540 can obtain the warpage value V of the head of the strip 200 after passing through the straightening machine 100 according to the mathematical expression V=BHA. At the same time, the calculation module 540 and the storage module 530 can also be electrically connected to the judgment module 550, wherein the calculation module 540 can transmit the warping value V to the judgment module 550 after obtaining the warping value V, and the storage module 530 can transmit the warping threshold V0 to the judgment module 550, and the judgment module 550 can judge the relationship between the warping value V and the warping threshold V0. The judgment module 550 is also electrically connected to the straightening module 560. When the warping value V is greater than the warping threshold V0, the judgment module 550 sends a control signal to the straightening module 560, so that the strip 200 returns to the entrance of the straightening machine 100 for secondary straightening; when the warping value V is less than or equal to the warping threshold V0, the judgment module 550 sends a control signal to the straightening module 560, so that the strip 200 continues to pass through the straightening machine 100.

[0109] The present application obtains the thickness H of the strip 200 and the vertical distance A between the head of the strip 200 and the distance measurement reference after the head of the strip 200 passes through the straightening machine 100, and presets the vertical distance B between the distance measurement reference and the exit of the straightening machine 100 and the warping threshold V0, and then obtains the warping value V of the head of the strip 200 after passing through the straightening machine 100 through the mathematical expression V=BHA, and can judge whether the straightening of the head of the strip 200 by the straightening machine 100 is qualified by judging the relationship between the warping value V and the warping threshold V0. The present application only needs to obtain two simple parameters, and does not require high-cost precision instruments such as visual systems and devices for tensile testing; at the same time, the present application only needs to perform simple subtraction operations and single value comparisons, and the completion of the operation and comparison process does not require a complex control system, which can avoid a large amount of cost investment. Therefore, the present application can effectively improve the problems of complex systems, inconvenient operations and high cost investment involved in the straightening control of the straightening machine 100 in the prior art.

[0110] Embodiment 3

[0111] Embodiment 3 of the present application provides an electronic device, the electronic device comprising:

[0112] memory for storing programs; and

[0113] The processor is used to execute any control method of the straightening machine provided in the present application by calling the program stored in the memory.

[0114] Embodiment 4

[0115] Embodiment 4 of the present application provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute any one of the control methods of the straightening machine provided in the present application.

[0116] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A control method for a straightening machine, characterized in that: The control method of the straightening machine is used to perform a straightening operation on a strip (200), and the control method of the straightening machine comprises: Obtaining the thickness H of the strip (200); After the head of the strip (200) passes through the straightening machine (100), a vertical distance A between the head of the strip (200) and a distance measurement reference is obtained; wherein the distance measurement reference is arranged above the exit of the straightening machine (100); The warping value V of the head of the strip (200) after passing through the straightening machine (100) is obtained according to the obtained thickness H of the strip (200) and the vertical distance A between the head of the strip (200) and the distance measurement reference. The mathematical expression of the warping value V is obtained as follows: V=BHA Wherein, B is the vertical distance between the distance measurement reference and the exit of the straightening machine (100); Determine the relationship between the warping value V and the preset warping threshold V0: When the warping value V is greater than the warping threshold value V0, the straightening machine (100) is controlled to rewind, so that the strip (200) returns to the entrance of the straightening machine (100) for secondary straightening; when the warping value V is less than or equal to the warping threshold value V0, the strip (200) continues to pass through the straightening machine (100).

2. The control method of the straightening machine according to claim 1, characterized in that: Obtaining the thickness H of the strip (200), comprising: Setting m thickness measuring points within a range corresponding to the strip (200); Obtaining thicknesses H1, H2, ..., Hm of the strip (200) at m thickness measurement points respectively; The thickness H of the strip (200) is obtained according to the thicknesses H1, H2, ..., Hm of the strip (200). The thickness H of the strip (200) is mathematically expressed as: H=(H1+H2+……+Hm) / m.

3. The control method of the straightening machine according to claim 1, characterized in that: After the head of the strip (200) passes through the straightening machine (100), a vertical distance A between the head of the strip (200) and a distance measurement reference is obtained, comprising: n distance measuring points are arranged at the head of the strip (200) along the width direction; Obtaining the vertical distances A1, A2, ..., An between the head of the strip (200) and the distance measurement reference at the n distance measurement points respectively; The vertical distance A between the head of the strip (200) and the distance measurement reference is obtained according to the vertical distances A1, A2, ..., An between the head of the strip (200) and the distance measurement reference. The vertical distance between the head of the strip (200) and the distance measurement reference is mathematically expressed as: A=(A1+A2+……+An) / n.

4. The control method of the straightening machine according to claim 1, characterized in that: The method for obtaining the thickness H of the strip material (200) is: measuring the thickness H of the strip material (200) by using a thickness measuring sensor (300).

5. The control method of the straightening machine according to claim 1, characterized in that: The method for obtaining the vertical distance A between the head of the strip (200) and the distance measurement reference is: measuring the vertical distance A between the head of the strip (200) and the distance measurement reference by using a distance measurement sensor (400).

6. The control method of the straightening machine according to claim 1, characterized in that: The vertical distance B between the distance measuring reference and the exit of the straightening machine (100) is the vertical distance between the distance measuring reference and the lower roller (120) of the straightening machine (100), and the lower roller (120) of the straightening machine (100) keeps its position fixed in the vertical direction.

7. The control method of the straightening machine according to claim 1, characterized in that: When the warping value V is greater than the warping threshold value V0, the straightening machine (100) is controlled to rewind so that the strip (200) returns to the entrance of the straightening machine (100) for secondary straightening, comprising: When the warping value V is greater than the warping threshold value V0, controlling the straightening machine (100) to rewind; adjusting the parameters of the straightening machine (100) according to the acquired warping value V; The strip (200) is returned to the entrance of the straightening machine (100) for secondary straightening.

8. A control system for a straightening machine, characterized in that: The control system of the straightening machine (100) is used to perform straightening operations on the strip (200), and the control system of the straightening machine (100) comprises: A thickness measuring module (510), used for obtaining the thickness H of the strip (200); a distance measuring module (520) for obtaining a vertical distance A between the head of the strip (200) and a distance measuring reference after the head of the strip (200) passes through the straightening machine (100); wherein the distance measuring reference is arranged obliquely above the exit of the straightening machine (100); A storage module (530) for storing a vertical distance B between the distance measurement reference and the exit of the straightening machine (100) and a preset warping threshold V0; A calculation module (540) is used to obtain a warpage value V of the head of the strip (200) after the head passes through the straightening machine (100) according to the obtained thickness H of the strip (200) and the vertical distance A between the head of the strip (200) and the distance measurement reference, and the mathematical expression of the warpage value V is obtained as: V = BHA; A judgment module (550) is used to judge the relationship between the warping value V and a preset warping threshold V0: A straightening module (560) is used to make the strip (200) return to the entrance of the straightening machine (100) for secondary straightening when the warping value V is greater than the warping threshold V0; and to make the strip (200) continue to pass through the straightening machine (100) when the warping value V is less than or equal to the warping threshold V0.

9. An electronic device, characterized in that: The electronic device comprises: memory for storing programs; and A processor is used to execute the control method of the head straightening machine according to any one of claims 1 to 7 by calling the program stored in the memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the control method of the head straightening machine according to any one of claims 1 to 7.

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