Cord fabric control method and system, nonvolatile storage medium and electronic equipment

Abstract

The invention discloses a curtain cloth control method and system, a nonvolatile storage medium and electronic equipment. The method comprises the following steps: acquiring working state information of a cord fabric of a tire; under the condition that the working state information meets a target preset condition, control parameters for the curtain cloth are adjusted, and the target preset condition is that the running speed is larger than a preset speed threshold value, and a first target difference value between the width measurement value and a preset width standard value is not within a preset width floating interval; a second target difference value between the density measurement value and the preset density standard value is not within the preset density floating interval; or, the running speed is larger than the preset speed threshold value, and the second target difference value between the density measurement value and the preset density standard value is not within the preset density floating interval. The technical problem that the width and the density of the curtain cloth cannot be accurately and automatically controlled in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of curtain control, and in particular, to a curtain control method and system, a non-volatile storage medium, and an electronic device. Background Art

[0002] In the rubber tire production process, the quality of the fiber cord has an important impact on the performance of the tire. The fiber width and density inside the cord are the core parameters that determine the performance of the fiber cord, and directly affect the rigidity, durability and uniformity of the tire. However, due to the differences in fiber raw yarns from different types and suppliers, and the differences between rubber batches, it is often difficult to effectively quantitatively control the width and density of the fiber cord in actual production.

[0003] The rubber tire industry generally uses manual experience to control the width and density of fiber cords, but this method cannot ensure the quality consistency of the entire batch. Manual measurement is difficult, and it is difficult for on-site production technicians to accurately and automatically control the width and density of the cord based on the detected working parameters of the cord.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The present application provides a control method and system for a curtain fabric, a non-volatile storage medium, and an electronic device, so as to at least solve the technical problem that the related art cannot accurately and automatically control the width and density of the curtain fabric.

[0006] According to one aspect of the present application, a method for controlling a tire cord is provided, comprising: obtaining working status information of the tire cord, wherein the working status information includes at least: a running speed of the cord, a measured value of a width of the cord, and a measured value of a density of the cord; when the working status information satisfies a target preset condition, adjusting control parameters for the cord, wherein the target preset condition is that the running speed is greater than a preset speed threshold, a first target difference between a width measurement value and a preset width standard value is not within a preset width floating interval, and a second target difference between a density measurement value and a preset density standard value is not within a preset density floating interval; or, the running speed is greater than a preset speed threshold, and a second target difference between a density measurement value and a preset density standard value is not within a preset density floating interval.

[0007] Optionally, when the working status information meets the target preset conditions, the control parameters for the curtain are adjusted, including: when the working status information meets the first preset condition, the width of the curtain is adjusted, wherein the first preset condition includes: the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0008] Optionally, when the working status information meets the target preset conditions, the control parameters for the curtain fabric are adjusted, including: when the working status information meets the second preset conditions, the density of the curtain fabric is adjusted, wherein the second preset conditions include: the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0009] Optionally, the method also includes: reacquiring working status information of the tire cord after a preset waiting time for adjusting the control parameters of the cord; re-adjusting the control parameters for the cord according to the working status information, and detecting a first adjustment number of the cord density; adjusting the running speed of the cord when the first adjustment number is greater than a preset number and the second target difference between the density measurement value and the preset density standard value is not within a preset density floating range.

[0010] Optionally, adjusting the width of the curtain includes: when the width measurement value is greater than a preset width standard value, sending a first control instruction to the spreader, wherein the first control instruction is used to instruct the spreader to reduce the width of the curtain; when the width measurement value is less than the preset width standard value, sending a second control instruction to the spreader, wherein the second control instruction is used to instruct the spreader to increase the width of the curtain.

[0011] Optionally, adjusting the density of the curtain fabric includes: when the density measurement value is greater than a preset density standard value, sending a third control instruction to the expander, wherein the third control instruction is used to instruct the expander to reduce the density of the curtain fabric; when the density measurement value is less than a preset density standard value, sending a fourth control instruction to the expander, wherein the fourth control instruction is used to instruct the expander to increase the density of the curtain fabric.

[0012] Optionally, adjusting the running speed of the cord fabric includes: sending a fifth control instruction to a calender roller, wherein the fifth control instruction is used to instruct the calender roller to adjust the calendering speed.

[0013] Optionally, the method also includes: obtaining a first determination result of a first target difference by an operating side in a target system, and a second determination result of the first target difference by a driving side in the target system, wherein the target system is used to control the curtain; obtaining a third determination result of a second target difference by an operating side in the target system, and a fourth determination result of the second target difference by a driving side in the target system; and adjusting the control parameters for the curtain when it is determined that the first determination result is consistent with the second determination result and the third determination result is consistent with the fourth determination result.

[0014] Optionally, the method also includes: obtaining working status information of the tire cord, including: collecting an image of the cord; using an edge detection algorithm to extract the cord boundary in the image, and determining the coordinates of the pixel points corresponding to the lateral endpoints in the cord boundary; determining the first distance between the pixel points corresponding to the lateral endpoints based on the coordinates of the pixel points; determining the real width corresponding to the first distance based on the pre-stored mapping relationship between the real width and the pixel size, and obtaining the measured value of the cord width.

[0015] According to another aspect of the present application, a control system for the tire cord is provided, comprising: an acquisition device for acquiring working status information of the tire cord, wherein the working status information at least includes: a running speed of the cord, a measured value of the width of the cord, and a measured value of the density of the cord; a control device for adjusting control parameters for the cord when the working status information meets a target preset condition, wherein the target preset condition is that the running speed is greater than a preset speed threshold, a first target difference between the width measurement value and the preset width standard value is not within a preset width floating range, and a second target difference between the density measurement value and the preset density standard value is not within a preset density floating range; or, the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within a preset density floating range.

[0016] Optionally, the control device is also used to perform the following steps: adjusting the width of the curtain when the working status information meets the first preset condition, wherein the first preset condition includes: the running speed is greater than a preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0017] Optionally, the control device is also used to perform the following steps: adjusting the density of the curtain fabric when the working status information meets a second preset condition, wherein the second preset condition includes: the running speed is greater than a preset speed threshold, and a second target difference between the density measurement value and the preset density standard value is not within a preset density floating range.

[0018] Optionally, the control device is also used to perform the following steps: reacquiring the working status information of the tire cord after adjusting the preset waiting time of the control parameters of the cord; re-adjusting the control parameters for the cord according to the working status information, and detecting the first adjustment number of the cord density; adjusting the running speed of the cord when the first adjustment number is greater than the preset number and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0019] Optionally, the control system of the curtain also includes: a spreader, used to receive a first control instruction sent by the control device, wherein the control device is used to send the first control instruction to the spreader when the width measurement value is greater than a preset width standard value, and the first control instruction is used to instruct the spreader to reduce the width of the curtain; the spreader is also used to receive a second control instruction sent by the control device, and the control device is used to send a second control instruction to the spreader when the width measurement value is less than a preset width standard value, and the second control instruction is used to instruct the spreader to increase the width of the curtain.

[0020] Optionally, the control system of the curtain also includes: an expander, which is used to receive a third control instruction sent by the control device, wherein the control device is used to send the third control instruction to the expander when the density measurement value is greater than the preset density standard value, and the third control instruction is used to instruct the expander to reduce the density of the curtain; the expander is also used to receive a fourth control instruction sent by the control device, wherein the control device is used to send a fourth control instruction to the expander when the density measurement value is less than the preset density standard value, and the fourth control instruction is used to instruct the expander to increase the density of the curtain.

[0021] Optionally, the control system of the cord fabric further comprises: a calender roller, which is used to receive a fifth control instruction sent by the control device, wherein the fifth control instruction is used to instruct the calender roller to adjust a calendering speed.

[0022] According to another aspect of the present application, a non-volatile storage medium is provided, the storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the above curtain control method.

[0023] According to another aspect of the present application, there is also provided an electronic device, comprising: a memory and a processor, wherein the processor is used to run a program stored in the memory, wherein the above curtain control method is executed when the program is run.

[0024] According to another aspect of the present application, a computer program is further provided, wherein when the computer program is executed by a processor, the above curtain control method is implemented.

[0025] According to another aspect of the present application, a computer program product is provided, which includes a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above curtain control method is implemented.

[0026] In the present application, the working status information of the tire cord is obtained, wherein the working status information includes at least: the running speed of the cord, the width measurement value of the cord, and the density measurement value of the cord; when the working status information meets the target preset conditions, the control parameters for the cord are adjusted, wherein the target preset conditions are that the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, thereby achieving the purpose of accurate automatic control of the width and density of the cord, thereby achieving the technical effect of improving the product quality of the cord, and further solving the technical problem that the related technology cannot accurately control the width and density of the cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 is a flow chart of a curtain control method according to an embodiment of the present application;

[0029] Figure 2 is a flow chart of another curtain control method according to an embodiment of the present application;

[0030] Figure 3 is a structural diagram of a control system for curtain fabric according to an embodiment of the present application;

[0031] Figure 4 is a schematic diagram of a control system for curtain fabric according to an embodiment of the present application;

[0032] Figure 5 It is a hardware structure block diagram of a computer terminal of a curtain control method according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] According to an embodiment of the present application, a method embodiment of a curtain control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0036] Figure 1 is a flow chart of a curtain control method according to an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0037] Step S102, obtaining working status information of the tire cord, wherein the working status information at least includes: a running speed of the cord, a measured value of a width of the cord, and a measured value of a density of the cord.

[0038] In an actual production line, step S102 is implemented by integrating multiple sensors and measuring devices on the production line. The Manufacturing Execution System (MES) first starts an online monitoring device, which may include a high-precision line speed sensor, a width measurement sensor, and a density measurement sensor. On the other hand, the device may also include: a width measurement system based on machine vision, and a density measurement system based on machine vision.

[0039] The running speed of the curtain is obtained through the linear speed sensor to ensure that the system understands the current moving speed of the curtain. The measured width of the curtain is obtained through the width measurement sensor, or the curtain image is analyzed by the machine vision algorithm to extract the curtain edge information and calculate the real-time curtain width. The measured density of the curtain is obtained through the density measurement sensor, or the curtain image is analyzed by the machine vision algorithm to extract the curtain edge information and calculate the real-time curtain density.

[0040] Step S104, when the working status information meets the target preset conditions, adjust the control parameters for the curtain fabric, wherein the target preset conditions are that the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0041] The system sets a minimum speed threshold, and the control process will only start when the running speed of the curtain fabric is higher than this threshold. This is to avoid misoperation at low speed or in a stopped state. Check whether the width measurement value is consistent with the width standard value set in the system. If the difference between the width measurement value and the standard value exceeds the allowed floating range (such as ±5mm), the system will determine that the curtain fabric width is unqualified and needs to be adjusted. Similarly, check whether the density measurement value is consistent with the density standard value in the system. If the difference between the density measurement value and the standard value exceeds the allowed floating range, the system will determine that the curtain fabric density is unqualified and needs to be adjusted.

[0042] Through the above steps, accurate and automatic control of tire cord width and density can be achieved, which can significantly improve production efficiency and product quality, reduce scrap rate, reduce labor costs, and provide reliable data support for subsequent data analysis and process optimization.

[0043] The following Figure 1 The steps shown are exemplary and explanatory.

[0044] According to some optional embodiments of the present application, when the working status information meets the target preset conditions, adjusting the control parameters for the curtain can be achieved by the following method: when the working status information meets the first preset condition, adjusting the width of the curtain, wherein the first preset condition includes: the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0045] Specifically, the width of the curtain can be adjusted by the following method: when the width measurement value is greater than the preset width standard value, a first control instruction is sent to the spreader, wherein the first control instruction is used to instruct the spreader to reduce the width of the curtain; when the width measurement value is less than the preset width standard value, a second control instruction is sent to the spreader, wherein the second control instruction is used to instruct the spreader to increase the width of the curtain.

[0046] On the other hand, when the working status information meets the target preset conditions, adjusting the control parameters for the curtain fabric can be achieved by the following method: when the working status information meets the second preset conditions, adjusting the density of the curtain fabric, wherein the second preset conditions include: the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0047] Specifically, the density of the curtain fabric can be adjusted by the following method: when the density measurement value is greater than the preset density standard value, a third control instruction is sent to the expander, wherein the third control instruction is used to instruct the expander to reduce the density of the curtain fabric; when the density measurement value is less than the preset density standard value, a fourth control instruction is sent to the expander, wherein the fourth control instruction is used to instruct the expander to increase the density of the curtain fabric.

[0048] It should be noted that, when the target preset conditions are that the running speed is greater than the preset speed threshold and the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, in short, when the running speed meets the requirements, but the width and density do not meet the requirements, adjust the width of the cord, that is, adjust the double-roller expansion parameters of the calender, increase or decrease the distribution amount of the fiber, so as to achieve the purpose of adjusting the width of the cord.

[0049] When the width of the cord is adjusted to a first target difference between the cord and the preset width standard value and within the preset width floating range, the second target difference between the cord density and the preset density standard value may be within the preset density floating range, and the second target difference between the cord density and the preset density standard value may not be within the preset density floating range. At this time, when the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, the cord density is adjusted, that is, the three-finger edge expansion parameters of the calender are adjusted to optimize the distribution of the fibers, thereby adjusting the cord density.

[0050] In other words, when the system's real-time monitoring shows that the running speed of the curtain is greater than the preset minimum speed threshold (that is, the basic conditions for starting the control are met), and at the same time it is detected that the width and density of the curtain do not meet the preset standard values, that is, the first target difference between the width measurement value and the preset width standard value exceeds the preset width floating range, and the second target difference between the density measurement value and the preset density standard value also exceeds the preset density floating range, the system will first adjust the width.

[0051] By controlling the working parameters of the double-roller expander, the distribution of fiber strands is adjusted, thereby affecting the width of the cord fabric. The system will automatically calculate the required expansion adjustment amount based on the difference between the width measurement value and the standard value. If after adjustment, the first target difference between the width measurement value and the preset width standard value returns to within the preset width floating range, that is, the width is qualified, and the system will proceed to the next step, otherwise it will continue to adjust until the width is qualified.

[0052] When the width is adjusted to meet the standard, the system will then check whether the density is qualified. If the difference between the density measurement value and the preset density standard value still exceeds the preset density floating range, the system will automatically adjust the edge expansion parameters, that is, by controlling the position of the three-finger edge expander to affect the density of the cord fabric. The system will also automatically calculate the adjustment amount of the edge expansion parameters based on the difference between the actual density and the standard density. Once the adjustment is completed, check again whether the density returns to the preset density floating range, that is, whether the density is qualified. If the density is qualified, the control process ends; if it is not qualified, the edge expansion parameters can be adjusted until the density is qualified.

[0053] Through the above-mentioned step-by-step control strategy, the system ensures that the adjustment order of width and density is reasonable, solving the width problem first and then the density problem, avoiding the mutual influence between width and density adjustment, thus ensuring the efficiency and accuracy of cord production. The design of this control logic also reflects the system's priority consideration of different parameters in cord production, ensuring that the width is adjusted to the standard range first and then the density is controlled under the premise of meeting the speed conditions, and finally realizing the synchronous online automatic control of width and density, which significantly improves the automation level of cord manufacturing and the quality of finished products.

[0054] According to other optional embodiments of the present application, the control method of the cord further includes: reacquiring working status information of the cord of the tire after adjusting a preset waiting time for control parameters of the cord; readjusting control parameters for the cord according to the working status information, and detecting a first adjustment number of cord density; adjusting the running speed of the cord when the first adjustment number is greater than a preset number and a second target difference between the density measurement value and a preset density standard value is not within a preset density floating range.

[0055] Specifically, the running speed of the cord fabric can be adjusted by the following method: sending a fifth control instruction to the calender roller, wherein the fifth control instruction is used to instruct the calender roller to adjust the calendering speed.

[0056] After the cord width is adjusted to the qualified level, the control and detection of cord density enters the cycle optimization stage. After the system adjusts the edge expansion parameters to control the cord density, it will enter the preset waiting time. This period of time is to allow the control operation effect to be reflected and ensure that the control system does not respond too frequently and affect the stability of the control. The setting of the preset waiting time is based on a comprehensive consideration of the edge expansion operation response time and production rhythm.

[0057] After the waiting time, the system obtains the working status information of the fabric again, including the running speed of the fabric, the latest width measurement value (which should be within the qualified range at this time) and the new density measurement value. The system will re-evaluate whether the second target difference between the density measurement value and the preset density standard value is within the preset density floating range.

[0058] If the density measurement value of the cord fabric still does not reach the qualified range after adjusting the edge expansion parameters for many times (i.e. the first adjustment number is greater than the preset number), that is, the second target difference still exceeds the preset density floating range, the system will take further measures, i.e. adjust the running speed of the cord fabric. The adjustment of the running speed is a higher-level control method, which aims to indirectly affect the density of the cord fabric by changing the speed at which the cord fabric passes through the calender. The purpose of the system adjusting the running speed of the cord fabric is to overcome the density control difficulties that may be caused by the production rhythm or the response time of the equipment. By changing the running speed of the cord fabric, the system attempts to find a balance point with qualified density under the new production conditions. This adjustment also follows the closed-loop control principle, that is, after adjusting the running speed, the system will wait for a period of time again, and then re-acquire the working status information to determine whether the density is qualified, and adjust the control parameters again according to the new measurement results until the density of the cord fabric stabilizes within the preset floating range.

[0059] For example, after adjusting the density of the cord fabric for 5 times, if the second target difference between the density measurement value and the preset density standard value is still not within the preset density floating range, the running speed of the cord fabric needs to be adjusted.

[0060] The number of adjustments made to the cord density is automatically recorded, that is, the first adjustment number. If the first adjustment number exceeds a preset number (eg, 5 times), it is determined that the current adjustment of the edge expansion parameters is insufficient to control the density to a qualified range.

[0061] According to the current state of the cord density and production conditions, a new running speed value is calculated. If the current density is lower than the standard value, the system can reduce the cord running speed to increase the contact time between the fiber precursor and the rubber, thereby increasing the density; conversely, if the density is higher than the standard value, the system can increase the cord running speed to reduce the contact time between the fiber precursor and the rubber, thereby reducing the density. The control system sends the new running speed value to the main control system of the calender, and the calender will operate according to the new speed parameters. At the same time, it will enter the preset waiting time again to wait for the adjustment effect to appear. After the preset waiting time, the working state information of the cord is re-acquired, including the latest density measurement value. At this time, the second target difference between the density measurement value and the preset density standard value is calculated again to determine whether it is within the preset density floating range. If the density measurement value of the cord is still unqualified after adjusting the running speed, the system will repeat the above process, that is, adjust the running speed again until the density is qualified or other preset control limit conditions are met.

[0062] Controlling the density of the cord fabric by adjusting the running speed is a relatively complex control method, which involves rebalancing the entire production process. The adjustment of the running speed may affect other production parameters. Therefore, when the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating interval, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating interval, the present application first adjusts the width of the cord fabric to achieve that the first target difference between the width measurement value and the preset width standard value is within the preset width floating interval, and the second target difference between the density measurement value and the preset density standard value is within the preset density floating interval. After one or more adjustments, the first target difference between the width measurement value and the preset width standard value will be within the preset width floating interval, but the second target difference between the density measurement value and the preset density standard value at this time may not be within the preset density floating interval. When the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating interval, the density of the cord fabric continues to be adjusted. After multiple adjustments, if the second target difference between the density measurement value and the preset density standard value is still not within the preset density floating range, the cord density is controlled by adjusting the running speed.

[0063] In other words, the step-by-step control strategy is used to adjust the width and density of the cord fabric, which ensures product quality while also reflecting the fine management and control of the production process. In specific implementation, the system follows the following process:

[0064] 1. When the system detects that the running speed of the curtain fabric is greater than the preset speed threshold, and the width and density do not meet the preset standards, the width is adjusted first. This is because the control of the curtain fabric width directly affects the subsequent density control, and ensuring that the width is within the qualified range is the prerequisite for density adjustment.

[0065] The system changes the distribution of fiber filaments by adjusting the parameters of the double-roller expander, thereby adjusting the cord width to within the preset width floating range. This adjustment may require multiple iterations until the first target difference between the width measurement value and the preset width standard value is stably within the preset width floating range.

[0066] 2. After the width adjustment is qualified, the system starts to pay attention to the density of the cord. If the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, that is, the density is unqualified, the system will optimize the density distribution of the fiber precursor by adjusting the parameters of the three-finger expander.

[0067] Density adjustment may also require multiple iterations. The system will continue to adjust the edge expansion parameters and re-detect the density until the second target difference between the density measurement value and the preset density standard value returns to the preset density floating range.

[0068] 3. If the second target difference between the density measurement value and the preset density standard value still does not reach the qualified range after multiple adjustments to the edge expansion parameters (for example, the preset multiple adjustment thresholds), the system will take measures to adjust the operating speed. The adjustment of the operating speed is considered to be a more comprehensive control method that may have a greater impact on the entire production process, so it is the last choice after other control methods have failed.

[0069] 4. After adjusting the running speed, the system enters the preset waiting time again, waiting for the adjustment effect to appear on the production line. After the waiting period is over, the system re-acquires the working status information of the cord, including the latest density measurement value, to determine whether the speed adjustment is effective and whether the density is within the qualified range.

[0070] Through the above process, the system ensures that the width and density of the cord fabric during the production process can meet the preset standards. Even in a complex production environment, it can effectively respond to various challenges through multi-level control methods to ensure product quality and production efficiency. This control strategy not only reflects the deep understanding and flexible response of the cord fabric production process, but also reflects the innovative thinking in the pursuit of a balance between product quality and production efficiency.

[0071] In some optional embodiments of the present application, the curtain control method also includes: obtaining a first determination result of a first target difference by an operating side in a target system, and a second determination result of the first target difference by a driving side in the target system, wherein the target system is used to control the curtain; obtaining a third determination result of a second target difference by an operating side in the target system, and a fourth determination result of the second target difference by a driving side in the target system; and adjusting the control parameters for the curtain when it is determined that the first determination result is consistent with the second determination result and the third determination result is consistent with the fourth determination result.

[0072] Compare the results of the determination of the first target difference (i.e., the width difference) by the operating side and the driving side. If they are consistent, it means that the information of the width measurement and control is correctly transmitted between the operating side and the driving side, and the control effect is confirmed. Similarly, compare the results of the determination of the second target difference (i.e., the density difference) by the operating side and the driving side. If they are also consistent, it means that the density measurement and control are also effective and the information transmission is accurate.

[0073] If the results of the difference determination of width and density are consistent between the operating side and the driving side, that is, the first determination result is consistent with the second determination result, and the third determination result is consistent with the fourth determination result, this indicates that the current measurement and control state of the system is synchronized and reliable. On this basis, the system will adjust the corresponding control parameters according to the size and direction of the difference. For example, if the width difference exceeds the preset floating range, the system will adjust the expansion parameters; if the density difference exceeds the preset floating range, the system will adjust the edge expansion parameters, or as mentioned above, if the density is still unqualified after multiple adjustments, the system may adjust the running speed of the curtain.

[0074] By determining the consistency of the difference between the operating side and the driving side, the system ensures that each step of width and density control is based on accurate measurement data and information synchronization, thereby improving the accuracy and reliability of control. The design of this mechanism also avoids control inaccuracies caused by information transmission delays or errors, ensuring that the width and density of the cord fabric production process can be stably and accurately controlled within the preset floating range, ultimately achieving high-quality cord fabric production.

[0075] As some optional embodiments of the present application, obtaining the working status information of the tire cord can be achieved by the following method: collecting an image of the cord; using an edge detection algorithm to extract the cord boundary in the image, and determining the coordinates of the pixel points corresponding to the lateral endpoints in the cord boundary; determining the first distance between the pixel points corresponding to the lateral endpoints based on the coordinates of the pixel points; determining the real width corresponding to the first distance based on the pre-stored mapping relationship between the real width and the pixel size, and obtaining the measured value of the cord width.

[0076] A high-resolution industrial camera mounted above the calender is used to capture images of the passing fabric surface in real time. The position and angle of the camera are carefully designed to ensure that a clear, unobstructed image of the fabric can be captured. First, an edge detection algorithm (such as the Canny edge detection algorithm) is applied to process the fabric image. The edge detection algorithm can identify sudden changes in brightness in the image to find the edge of the fabric. Next, the lateral (i.e., the width direction of the fabric) endpoints, i.e., the left and right boundaries of the fabric, are determined on the edge of the fabric. The pixel coordinates corresponding to these endpoints are recorded for subsequent calculation of the fabric width. Based on the extracted lateral endpoint pixel coordinates, the first distance between these pixels is calculated. The first distance reflects the pixel value representation of the fabric width in the image, but does not directly correspond to the actual fabric width. The mapping relationship between the camera pixel size and the actual fabric width is pre-stored in the system. This mapping relationship is usually obtained by calibration with a standard width fabric sample during the initial setup of the system, ensuring that the pixel value can be accurately converted to the actual width value. Using the pre-stored mapping relationship, the calculated first distance (pixel representation of the curtain width) is converted into the corresponding real width value, that is, the actual width of the curtain. This conversion process ensures that the width measured in the image can reflect the width of the curtain in the real world, thereby obtaining the measured value of the curtain width.

[0077] Through the above steps, the width of the cord can be measured in real time and accurately, providing key data for subsequent width control and production process monitoring. This width measurement technology based on image processing not only improves the accuracy of measurement, but also realizes the automation of width measurement, greatly reducing the need for manual intervention, and improving production efficiency and cord quality consistency.

[0078] According to the above steps, this application has the following advantages:

[0079] 1. Improve production efficiency: Traditional manual control methods rely on experience and visual judgment, which is prone to errors and fatigue, leading to inaccurate control. However, this application uses machine vision technology to detect the width and density of fiber cords in real time, eliminating the reliance on manual intervention and improving the degree of automation and production efficiency of production.

[0080] 2. Improve product quality: By real-time monitoring of fiber cord width and density, this application can accurately control the production process of fiber cord to ensure the consistency and stability of fiber cord width and density. This helps to reduce the defective rate and improve the quality and reliability of fiber cord. Based on a monthly reduction of 10kg of defective width and density products, 3,650kg of cord can be saved each year, saving 38,000 yuan in quality costs.

[0081] 3. Reduce labor costs: Traditional manual control requires dedicated operators to monitor and adjust in real time, which is labor-intensive and prone to errors. The automatic control system of this application can reduce the demand for human resources and reduce labor costs. If one inspector is reduced per shift, two people can be reduced each year, saving 200,000 yuan in labor costs.

[0082] 4. Real-time exception handling: The automatic control system of this application can be compared with the standard. Once it detects that the cord width or density exceeds the set threshold, it can promptly trigger the exception handling mechanism, such as automatically adjusting the parameters of the calender or issuing an alarm signal to ensure the stability and consistency of the production process. The engineering capability index CPK of the cord width is increased from 1.03 to 1.58.

[0083] 5. Improve the traceability of production data: The automatic control system of this application can record and save the real-time data of the width and density of the cord fabric, which can be used for the analysis and optimization of the production process, provide the traceability of the production data, and provide a reference for quality management and process improvement.

[0084] Figure 2 is a flow chart of another curtain control method according to an embodiment of the present application, such as Figure 2 As shown, the method comprises the following steps:

[0085] Step S201, calibration of camera pixels and actual width.

[0086] A steel ruler is customized on the surface of the curtain fabric and accurately attached to the curtain fabric. The curtain fabric surface is photographed by a camera, and the corresponding relationship between the camera pixel value and the actual width value on the steel ruler is recorded to establish a mapping relationship between the actual width and the pixel.

[0087] Step S202: edge detection and coordinate extraction.

[0088] Use edge detection algorithms (such as Canny edge detection) to process the curtain image taken by the camera and extract the border of the curtain. Extract coordinates on the border and choose to take the mode to represent the coordinates of the curtain in the x direction. This will provide the actual width of the curtain within the camera's field of view.

[0089] Step S203, calculating the actual width of the curtain within the camera field of view.

[0090] Using the calibration relationship between pixels and actual width, the pixel values ​​of the extracted curtain borders are converted into actual width values. For the curtain borders within the camera field of view on both sides, their actual widths are calculated. The actual width of the curtain within the camera field of view on both sides is added to the width in the middle non-camera field of view to obtain the actual width of the current curtain.

[0091] Step S204, obtaining current system status information, including speed, width measurement value, density measurement value, etc. Real-time status information of the system is obtained through sensors or other measuring devices. For example, a speed sensor can be used to measure the current speed of the system, a width measuring device can be used to obtain the width measurement value of the system, and a density measurement system can be used to obtain the density measurement value of the system. These sensors and measuring devices can be directly connected to the control system or transmit information through a data acquisition module.

[0092] Step S205, determine whether the current speed is lower than the preset speed threshold, if yes, no control is performed; if not, proceed to the next step. The preset speed threshold can be set according to the design requirements and operating conditions of the system. For example, if the system needs to operate within a specific speed range, when the speed is lower than the preset minimum speed threshold, it can be determined as a low speed state, and no further control operation is required.

[0093] Step S206, determine whether the width measurement value, density measurement value and width standard value can be obtained. If any of the data cannot be obtained, no control is performed; if all the data can be obtained, the next step is executed. It is critical to ensure that the system can accurately obtain the required width measurement value, density measurement value and width standard value. If any of the data cannot be obtained, it may be a sensor failure or other problems. At this time, the control operation should be terminated to prevent incorrect control decisions caused by the lack of key data.

[0094] Step S207, calculate the width difference, DS density difference and WS density difference. The width difference is calculated by comparing the current width measurement value with the width standard value. Similarly, the DS density difference and WS density difference are calculated by comparing the current density measurement value with the preset DS density standard value and WS density standard value. These differences are used for subsequent judgment and control decisions.

[0095] Step S208, according to the comparison result of the width difference, DS density difference and WS density difference with the preset threshold value, determine the control type and control amount. Compare the width difference, DS density difference and WS density difference calculated in step S207 with the preset threshold value. According to the comparison result, determine the control type and corresponding control amount to be taken. For example, if the width difference exceeds the preset threshold value, it can be determined that the expansion amount needs to be adjusted, and the corresponding adjustment amount is calculated.

[0096] Step S209, update the system status list and record the most recent judgment result. Record the current judgment result and control operation in the system status list for subsequent status analysis and control effect evaluation. The system status list can be a data structure for storing information such as timestamp, judgment result, control type and control amount.

[0097] Step S210, determine whether all the judgment results in the system status list are equal. If so, execute the next step; if not, return to step S209. Check whether the most recent series of judgment results in the system status list are consistent. If these judgment results are all equal, it means that the system is in a relatively stable state and the control operation has taken effect. You can continue to the next step. If the judgment results are inconsistent, there may be other uncertain factors, and you should return to step S209 for further analysis and recording.

[0098] Step S211, performing corresponding control operations according to the control type and control amount, including adjusting the spreading amount and control time. According to the control type and control amount determined in step S208, the system is adjusted accordingly. For example, if the spreading amount needs to be increased, the operating parameters of the spreading device can be adjusted by the control actuator to increase the spreading amount of the material. The control operation can also involve adjusting the control time, such as extending or shortening the working time of the spreading device to control the distribution effect of the material.

[0099] Step S212, record the results of the control operation, including the change of the control amount and the control time. The results of the executed control operation are recorded, including the change of the control amount and the actual execution time of the control. These records can be used for subsequent analysis and evaluation to verify the effect of the control operation and optimize the control strategy.

[0100] Step S213, waiting for a certain time delay. After executing the control operation, wait for a certain time delay to ensure that the system is stable and fully reflects the control effect. The length of the time delay can be set according to the response time and control requirements of the system. If the waiting time delay is too short, the control operation may not be fully effective, while if the waiting time delay is too long, the response speed of the system may be affected.

[0101] Step S214, return to step S204, and continue the next round of control judgment and operation. Return to step S204, obtain the latest system status information, and continue the next round of control judgment and operation. By cyclically executing the above steps, continuous control and optimization of the system can be achieved.

[0102] Through the above steps, it can be seen that this application has the following advantages:

[0103] 1. It can detect the width and density of the fiber cord in real time during the production process of the calendering process, and provide timely feedback to the control system. Through real-time monitoring, abnormalities in the width and density of the fiber cord can be quickly discovered, so that control measures can be taken in time to avoid adverse effects of abnormalities in the production process on product quality.

[0104] 2. Through the calculation method based on machine vision, the width and density of the cord fabric are accurately calculated and compared with the set standards in the MES information system. Through accurate measurement and comparison, it can be ensured that the width and density of the cord fabric meet the requirements, thereby improving the consistency and quality of the product.

[0105] 3. Through the automatic control system, the width and density of the fiber cord can be automatically controlled. When the difference between the actual value and the standard value exceeds the set threshold, the automatic control system will trigger the abnormal handling mechanism and automatically adjust the expansion and edge expansion parameters of the control calender to correct the deviation and make the actual value close to or meet the standard value. In this way, the stability and consistency of the production process can be achieved, and the production efficiency and product quality can be improved.

[0106] Through this application, the fiber cord width and density can be automatically, accurately and stably controlled, reducing the workload of quality inspectors and ensuring the quality consistency of the fiber cord. At the same time, through the machine vision detection solution and the PLC interactive control system of the calender expansion parameters, the efficiency and reliability of the fiber cord production process can be improved, bringing economic benefits and competitive advantages to the enterprise.

[0107] Figure 3 is a structural diagram of a control system for curtain fabric according to an embodiment of the present application, such as Figure 3 As shown, the system includes:

[0108] The acquisition device 31 is used to acquire the working state information of the tire cord, wherein the working state information at least includes: the running speed of the cord, the measured value of the cord width, and the measured value of the cord density.

[0109] The control device 32 is used to adjust the control parameters for the curtain fabric when the working status information meets the target preset conditions, wherein the target preset conditions are that the operating speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the operating speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0110] Among them, the connection between the acquisition device 31 and the control device 32 can be a direct physical connection (such as through a data line) or an indirect network connection (such as through a wireless network or industrial Ethernet). In either case, it is necessary to ensure the real-time and accuracy of data transmission. In the physical connection, the quality and length of the data line need to meet industrial standards to avoid signal attenuation or interference. In the wireless or network connection, a stable network environment and an encrypted transmission protocol need to be set to ensure the secure transmission of data.

[0111] According to some optional embodiments of the present application, the control device 32 is also used to perform the following steps.

[0112] When the working status information meets the first preset condition, the width of the curtain is adjusted, wherein the first preset condition includes: the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0113] The control system of the curtain fabric also includes: a spreader 33. The spreader 33 is used to receive a first control instruction sent by the control device 32. The control device 32 is used to send the first control instruction to the spreader 33 when the width measurement value is greater than the preset width standard value. The first control instruction is used to instruct the spreader 33 to reduce the width of the curtain fabric. The spreader 33 is also used to receive a second control instruction sent by the control device 32. The control device 32 is used to send the second control instruction to the spreader 33 when the width measurement value is less than the preset width standard value. The second control instruction is used to instruct the spreader 33 to increase the width of the curtain fabric.

[0114] The expander 33 is, for example, a double-roll expander, wherein the double-roll expander is located at the front of the calender, and its main function is to expand the incoming fiber filaments laterally through two relatively rotating rollers to adjust the overall width of the cord. The shape and rotation speed of the rollers can be adjusted, and the distance between the rollers can also be changed as needed to control the degree of lateral expansion of the fiber filaments. In the control system proposed in the present application, the parameters of the double-roll expander (such as roller gap, speed, etc.) will be adjusted according to the real-time monitored cord width difference to ensure that the cord width meets the standard.

[0115] On the other hand, the control device 32 is also used to execute the following steps.

[0116] When the working status information meets the second preset condition, the density of the curtain fabric is adjusted, wherein the second preset condition includes: the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0117] The control system of the curtain fabric also includes: an expander 34. The expander 34 is used to receive a third control instruction sent by the control device 32. The control device 32 is used to send the third control instruction to the expander 34 when the density measurement value is greater than the preset density standard value. The third control instruction is used to instruct the expander 34 to reduce the density of the curtain fabric; the expander 34 is also used to receive a fourth control instruction sent by the control device 32. The control device 32 is used to send a fourth control instruction to the expander 34 when the density measurement value is less than the preset density standard value. The fourth control instruction is used to instruct the expander 34 to increase the density of the curtain fabric.

[0118] The edge expander 34 is, for example, a three-finger edge expander, which is used to adjust the density of the edge of the cord and is located on the side of the calender. The three-finger edge expander consists of three independently adjustable finger-shaped components. By changing the positions of these finger-shaped components, the expansion degree of the fiber filament edge can be controlled, thereby adjusting the density of the edge of the cord. In the control system proposed in the present application, the parameters of the three-finger edge expander (such as the position of the finger-shaped components) are automatically adjusted according to the density difference to ensure that the density of the cord is uniform and meets the standard.

[0119] It should be noted that, when the target preset conditions are that the running speed is greater than the preset speed threshold and the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, in short, when the running speed meets the requirements, but the width and density do not meet the requirements, adjust the width of the curtain, that is, adjust the spreading parameters, increase or decrease the distribution amount of the fiber, so as to achieve the purpose of adjusting the width of the curtain.

[0120] When the width of the cord is adjusted to a first target difference between the cord and the preset width standard value and within the preset width floating range, the second target difference between the cord density and the preset density standard value may be within the preset density floating range, and the second target difference between the cord density and the preset density standard value may not be within the preset density floating range. At this time, when the running speed is greater than the preset speed threshold and the first target difference between the width measurement value and the preset width standard value is within the preset width floating range and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, the cord density is adjusted, that is, the edge expansion parameter is adjusted to optimize the distribution of the fibers, thereby adjusting the cord density.

[0121] In other words, when the system's real-time monitoring shows that the running speed of the curtain is greater than the preset minimum speed threshold (that is, the basic conditions for starting the control are met), and at the same time it is detected that the width and density of the curtain do not meet the preset standard values, that is, the first target difference between the width measurement value and the preset width standard value exceeds the preset width floating range, and the second target difference between the density measurement value and the preset density standard value also exceeds the preset density floating range, the system will first adjust the width.

[0122] By controlling the working parameters of the double-roller expander, the distribution of fiber strands is adjusted, thereby affecting the width of the cord fabric. The system will automatically calculate the required expansion adjustment amount based on the difference between the width measurement value and the standard value. If after adjustment, the first target difference between the width measurement value and the preset width standard value returns to within the preset width floating range, that is, the width is qualified, and the system will proceed to the next step, otherwise it will continue to adjust until the width is qualified.

[0123] When the width is adjusted to meet the standard, the system will then check whether the density is qualified. If the difference between the density measurement value and the preset density standard value still exceeds the preset density floating range, the system will automatically adjust the edge expansion parameters, that is, by controlling the position of the three-finger edge expander to affect the density of the cord fabric. The system will also automatically calculate the adjustment amount of the edge expansion parameters based on the difference between the actual density and the standard density. Once the adjustment is completed, check again whether the density returns to the preset density floating range, that is, whether the density is qualified. If the density is qualified, the control process ends; if it is not qualified, the edge expansion parameters can be adjusted until the density is qualified.

[0124] Through the above-mentioned step-by-step control strategy, the system ensures that the adjustment order of width and density is reasonable, solving the width problem first and then the density problem, avoiding the mutual influence between width and density adjustment, thus ensuring the efficiency and accuracy of cord production. The design of this control logic also reflects the system's priority consideration of different parameters in cord production, ensuring that the width is adjusted to the standard range first and then the density is controlled under the premise of meeting the speed conditions, and finally realizing the synchronous online automatic control of width and density, which significantly improves the automation level of cord manufacturing and the quality of finished products.

[0125] According to some other optional embodiments of the present application, the control device 32 is also used to perform the following steps.

[0126] After adjusting the preset waiting time of the control parameters of the tire cord, the working status information of the tire cord is acquired again; according to the working status information, the control parameters for the tire cord are readjusted, and the first adjustment times of the cord density are detected; when the first adjustment times are greater than the preset times and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, the running speed of the tire cord is adjusted.

[0127] The control system of the cord fabric further includes: a calender roller 35. The calender roller 35 is used to receive a fifth control instruction sent by the control device 32, wherein the fifth control instruction is used to instruct the calender roller 35 to adjust the calendering speed.

[0128] The calender roller 35 is the core component of the production of the cord, which is responsible for closely fitting the rubber material and the fiber raw yarn to form a cord with a predetermined thickness and density. The calender can be composed of multiple rollers arranged in parallel. By adjusting the gap between the rollers (i.e., the calendering gap) and the pressure of the rollers, the thickness and density of the cord can be controlled. In the control system proposed in this application, the parameters of the calender roller 35 (such as the calendering gap, pressure, etc.) will be dynamically adjusted according to the width and density measurement values ​​of the cord to ensure the quality consistency of the cord.

[0129] After the cord width is adjusted to the qualified level, the control and detection of cord density enters the cycle optimization stage. After the system adjusts the edge expansion parameters to control the cord density, it will enter the preset waiting time. This period of time is to allow the control operation effect to be reflected and ensure that the control system does not respond too frequently and affect the stability of the control. The setting of the preset waiting time is based on a comprehensive consideration of the edge expansion operation response time and production rhythm.

[0130] After the waiting time, the system obtains the working status information of the fabric again, including the running speed of the fabric, the latest width measurement value (which should be within the qualified range at this time) and the new density measurement value. The system will re-evaluate whether the second target difference between the density measurement value and the preset density standard value is within the preset density floating range.

[0131] If the density measurement value of the cord fabric still does not reach the qualified range after adjusting the edge expansion parameters for many times (i.e. the first adjustment number is greater than the preset number), that is, the second target difference still exceeds the preset density floating range, the system will take further measures, i.e. adjust the running speed of the cord fabric. The adjustment of the running speed is a higher-level control method, which aims to indirectly affect the density of the cord fabric by changing the speed at which the cord fabric passes through the calender. The purpose of the system adjusting the running speed of the cord fabric is to overcome the density control difficulties that may be caused by the production rhythm or the response time of the equipment. By changing the running speed of the cord fabric, the system attempts to find a balance point with qualified density under the new production conditions. This adjustment also follows the closed-loop control principle, that is, after adjusting the running speed, the system will wait for a period of time again, and then re-acquire the working status information to determine whether the density is qualified, and adjust the control parameters again according to the new measurement results until the density of the cord fabric stabilizes within the preset floating range.

[0132] For example, after adjusting the density of the cord fabric for 5 times, if the second target difference between the density measurement value and the preset density standard value is still not within the preset density floating range, the running speed of the cord fabric needs to be adjusted.

[0133] The number of adjustments made to the cord density is automatically recorded, that is, the first adjustment number. If the first adjustment number exceeds a preset number (eg, 5 times), it is determined that the current adjustment of the edge expansion parameters is insufficient to control the density to a qualified range.

[0134] According to the current state of the cord density and production conditions, a new running speed value is calculated. If the current density is lower than the standard value, the system can reduce the cord running speed to increase the contact time between the fiber precursor and the rubber, thereby increasing the density; conversely, if the density is higher than the standard value, the system can increase the cord running speed to reduce the contact time between the fiber precursor and the rubber, thereby reducing the density. The control system sends the new running speed value to the main control system of the calender, and the calender will operate according to the new speed parameters. At the same time, it will enter the preset waiting time again to wait for the adjustment effect to appear. After the preset waiting time, the working state information of the cord is re-acquired, including the latest density measurement value. At this time, the second target difference between the density measurement value and the preset density standard value is calculated again to determine whether it is within the preset density floating range. If the density measurement value of the cord is still unqualified after adjusting the running speed, the system will repeat the above process, that is, adjust the running speed again until the density is qualified or other preset control limit conditions are met.

[0135] Controlling the density of the cord fabric by adjusting the running speed is a relatively complex control method, which involves rebalancing the entire production process. The adjustment of the running speed may affect other production parameters. Therefore, when the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating interval, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating interval, the present application first adjusts the width of the cord fabric to achieve that the first target difference between the width measurement value and the preset width standard value is within the preset width floating interval, and the second target difference between the density measurement value and the preset density standard value is within the preset density floating interval. After one or more adjustments, the first target difference between the width measurement value and the preset width standard value will be within the preset width floating interval, but the second target difference between the density measurement value and the preset density standard value at this time may not be within the preset density floating interval. When the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating interval, the density of the cord fabric continues to be adjusted. After multiple adjustments, if the second target difference between the density measurement value and the preset density standard value is still not within the preset density floating range, the cord density is controlled by adjusting the running speed.

[0136] Figure 4 is a schematic diagram of a control system for curtain fabric according to an embodiment of the present application, such as Figure 4 As shown, (1) is a collecting device, (2) is a control device, (3) is a double-roller expander, (4) is a three-finger expander, (5) is a calender roller, and (6) is a fiber curtain fabric.

[0137] The acquisition device (1) is used to acquire and analyze the image of the curtain fabric. Specifically, the acquisition device (1) uses an image processing algorithm to analyze the curtain fabric image, extracts the edge information of the curtain fabric, and thus calculates the real-time width and density of the curtain fabric. When the detection result is inconsistent with the curtain fabric standard in the MES, the automatic adjustment function is enabled.

[0138] The acquisition device (1) is composed of a high-performance industrial camera and an image processing unit. When the fiber cord passes through the calender, the camera captures the image of the cord, and the image processing algorithm (such as Canny edge detection) analyzes these images, extracts the edge information of the cord, and calculates the real-time width and density data. The accuracy and real-time performance of the acquisition device are the basis for the operation of the entire control system.

[0139] The control device (2) is the core of the system. The control device (2) can be based on a programmable logic controller (PLC) or a more advanced computer control system. The control device integrates parameter settings and operation interfaces for adjusting the width and density of the curtain fabric, including key process parameters such as the double-roller fabric expansion width and the three-finger edge expansion position. In manual mode, the operator manually adjusts the parameters through these interfaces; in automatic mode, the control device automatically calculates and adjusts the parameters based on the real-time data transmitted by the acquisition device to ensure that the width and density of the curtain fabric meet the set standards in the MES system.

[0140] The double roller expander (3) is located at the entrance of the calender and is used to expand the fiber precursor in the transverse direction to adjust the overall width of the cord. By adjusting the roller gap and rotation speed of the double roller expander, the degree of transverse expansion of the fiber precursor can be accurately controlled to achieve a predetermined cord width. The parameter adjustment of this device is automatically completed by the control device to ensure the stability and consistency of the width.

[0141] The function of the three-finger edge expander (4) is to perform a fine edge expansion operation on the edge of the cord fabric, in order to control the edge density of the cord fabric. By precisely adjusting the position of the finger-shaped components (three fingers) of the three-finger edge expander, the density of the fiber raw yarn edge can be increased or decreased, thereby ensuring that the overall density of the cord fabric is uniform. The parameters of the three-finger edge expander are also automatically adjusted by the control device according to real-time data to meet the standard requirements of the cord fabric density.

[0142] The calender rollers (5) are key equipment for forming the cord fabric. By adjusting the gap (calendering gap) and pressure between the rollers, the tightness of the rubber and the fiber precursors is controlled, thereby affecting the thickness and density of the cord fabric. The control device can dynamically adjust the calendering gap and pressure of the calender rollers to adapt to the production of cord fabrics of different widths and densities, thereby ensuring the quality of the cord fabrics.

[0143] The fiber cord (6) is the final output of the control system, and its width and density are directly related to the performance of the cord and the quality of the tire. Through the cooperation of the above control system, the quality of the fiber cord during the production process is monitored and automatically adjusted in real time, thereby improving the consistency of the cord and production efficiency.

[0144] Overall, Figure 4 The control system on display uses advanced image processing technology and automated control logic to achieve synchronous online automatic control of fiber cord width and density. This integrated control system can significantly reduce manual intervention and improve the accuracy and efficiency of the production process. Through real-time monitoring and automatic adjustment, the system ensures the stability and reliability of cord production quality, providing a solid technical foundation for intelligent manufacturing in the tire manufacturing industry.

[0145] Figure 5FIG. 1 shows a hardware structure block diagram of a computer terminal for implementing a curtain fabric control method. Figure 5 As shown, the computer terminal 50 may include one or more (502a, 502b, ..., 502n are used to illustrate) processors 502 (the processor 502 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 504 for storing data, and a transmission module 506 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the BUS bus), a network interface, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 5 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations shown.

[0146] It should be noted that the one or more processors 502 and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the computer terminal 50. As described in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0147] The memory 504 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the curtain control method in the embodiment of the present application. The processor 502 executes various functional applications and data processing by running the software programs and modules stored in the memory 504, that is, the curtain control method described above is realized. The memory 504 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 504 may further include a memory remotely arranged relative to the processor 502, and these remote memories may be connected to the computer terminal 50 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0148] The transmission module 506 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the computer terminal 50. In one example, the transmission module 506 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission module 506 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0149] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 50 .

[0150] It should be noted that, in some optional embodiments, the above Figure 5 The computer terminal shown may include hardware elements (including circuits), software elements (including computer code stored on a computer-readable medium), or a combination of hardware elements and software elements. It should be noted that Figure 5 This is merely one example of a particular embodiment and is intended to illustrate the types of components that may be present in the computer terminal described above.

[0151] It should be noted that Figure 5 The computer terminal shown is used to execute Figure 1 The control method of the curtain shown in the figure, therefore the relevant explanations in the execution method of the above command are also applicable to the electronic device and will not be repeated here.

[0152] The embodiment of the present application further provides a non-volatile storage medium, which includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the above curtain control method.

[0153] A program for executing the following functions on a non-volatile storage medium: obtaining working status information of a tire cord, wherein the working status information includes at least: a running speed of the cord, a measured value of a width of the cord, and a measured value of a density of the cord; and adjusting control parameters for the cord when the working status information satisfies a target preset condition, wherein the target preset condition is that the running speed is greater than a preset speed threshold, a first target difference between a measured width value and a preset width standard value is not within a preset width floating interval, and a second target difference between a measured density value and a preset density standard value is not within a preset density floating interval; or, the running speed is greater than a preset speed threshold, and a second target difference between a measured density value and a preset density standard value is not within a preset density floating interval.

[0154] An embodiment of the present application further provides an electronic device, including: a memory and a processor, wherein the processor is used to run a program stored in the memory, wherein the above curtain control method is executed when the program is run.

[0155] The processor is used to run a program that performs the following functions: obtaining working status information of the tire cord, wherein the working status information includes at least: the running speed of the cord, the width measurement value of the cord, and the density measurement value of the cord; when the working status information meets the target preset conditions, adjusting the control parameters for the cord, wherein the target preset conditions are that the running speed is greater than a preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

[0156] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0157] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0158] In the above-mentioned embodiments of the present application, the collected information is information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of the relevant data comply with relevant laws, regulations and standards, take necessary protection measures, do not violate public order and good morals, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0159] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0160] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0161] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0162] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0163] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for controlling a curtain fabric, characterized in that: include: Acquire working state information of the tire cord, wherein the working state information at least includes: a running speed of the cord, a measured value of a width of the cord, and a measured value of a density of the cord; When the working status information meets the target preset conditions, the control parameters for the curtain fabric are adjusted, wherein the target preset conditions are that the running speed is greater than the preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the running speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

2. The method according to claim 1, characterized in that When the working state information meets the target preset condition, adjusting the control parameters for the curtain fabric includes: When the working status information satisfies a first preset condition, the width of the curtain is adjusted, wherein the first preset condition includes: the running speed is greater than a preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

3. The method according to claim 1 or 2, characterized in that: When the working state information meets the target preset condition, adjusting the control parameters for the curtain fabric includes: When the working status information satisfies a second preset condition, the density of the curtain fabric is adjusted, wherein the second preset condition includes: the running speed is greater than a preset speed threshold, and a second target difference between the density measurement value and the preset density standard value is not within a preset density floating range.

4. The method according to claim 1, characterized in that: The method further comprises: After adjusting the preset waiting time of the control parameter of the tire cord, reacquiring the working state information of the tire cord; Re-adjusting the control parameters for the cord fabric according to the working state information, and detecting a first adjustment number of the cord fabric density; When the first adjustment number is greater than a preset number and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, the running speed of the curtain fabric is adjusted.

5. The method according to claim 2, characterized in that: Adjust the width of the curtain, including: When the width measurement value is greater than the preset width standard value, a first control instruction is sent to the fabric expander, wherein the first control instruction is used to instruct the fabric expander to reduce the width of the curtain fabric; When the measured width value is less than the preset standard width value, a second control instruction is sent to the spreader, wherein the second control instruction is used to instruct the spreader to increase the width of the curtain fabric.

6. The method according to claim 3, characterized in that Adjust the density of the cord fabric, including: When the density measurement value is greater than the preset density standard value, a third control instruction is sent to the edge expander, wherein the third control instruction is used to instruct the edge expander to reduce the density of the curtain fabric; When the density measurement value is less than the preset density standard value, a fourth control instruction is sent to the edge expander, wherein the fourth control instruction is used to instruct the edge expander to increase the density of the curtain fabric.

7. The method according to claim 4, characterized in that Adjusting the running speed of the curtain fabric comprises: A fifth control instruction is sent to the calender roller, wherein the fifth control instruction is used to instruct the calender roller to adjust the calendering speed.

8. The method according to claim 1, characterized in that: The method further comprises: Acquire a first determination result of the first target difference by an operating side in a target system, and a second determination result of the first target difference by a driving side in the target system, wherein the target system is used to control the curtain fabric; Acquire a third determination result of the second target difference by the operating side in the target system, and a fourth determination result of the second target difference by the driving side in the target system; When it is determined that the first determination result is consistent with the second determination result and the third determination result is consistent with the fourth determination result, a control parameter for the curtain fabric is adjusted.

9. The method according to claim 1, characterized in that: Get the working status information of the tire cord, including: Acquiring an image of the curtain fabric; Extracting the curtain boundary in the image by using an edge detection algorithm, and determining the coordinates of the pixel points corresponding to the transverse end points in the curtain boundary; Determine, according to the coordinates of the pixel points, a first distance between the pixel points corresponding to the horizontal endpoints; According to the pre-stored mapping relationship between the real width and the pixel size, the real width corresponding to the first distance is determined to obtain the measured value of the width of the curtain.

10. A control system for curtain fabric, characterized in that: include: An acquisition device is used to acquire working state information of the tire cord, wherein the working state information at least includes: a running speed of the cord, a measured value of the cord width, and a measured value of the cord density; A control device, used for adjusting the control parameters for the curtain fabric when the working status information meets the target preset conditions, wherein the target preset conditions are that the operating speed is greater than a preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range; or, the operating speed is greater than the preset speed threshold, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

11. The curtain fabric control system according to claim 10, characterized in that: The control device is also used to perform the following steps: When the working status information satisfies a first preset condition, the width of the curtain is adjusted, wherein the first preset condition includes: the running speed is greater than a preset speed threshold, the first target difference between the width measurement value and the preset width standard value is not within the preset width floating range, and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range.

12. The curtain fabric control system according to claim 10 or 11, characterized in that: The control device is also used to perform the following steps: When the working status information satisfies a second preset condition, the density of the curtain fabric is adjusted, wherein the second preset condition includes: the running speed is greater than a preset speed threshold, and a second target difference between the density measurement value and the preset density standard value is not within a preset density floating range.

13. The curtain fabric control system according to claim 10, characterized in that: The control device is also used to perform the following steps: After adjusting the preset waiting time of the control parameter of the tire cord, reacquiring the working state information of the tire cord; Re-adjusting the control parameters for the cord fabric according to the working state information, and detecting a first adjustment number of the cord fabric density; When the first adjustment number is greater than a preset number and the second target difference between the density measurement value and the preset density standard value is not within the preset density floating range, the running speed of the curtain fabric is adjusted.

14. The curtain fabric control system according to claim 11, characterized in that: The control system of the curtain fabric further comprises: a fabric expander, which is used to receive a first control instruction sent by the control device, wherein the control device is used to send a first control instruction to the fabric expander when the width measurement value is greater than the preset width standard value, and the first control instruction is used to instruct the fabric expander to reduce the width of the curtain fabric; The spreader is also used to receive a second control instruction sent by the control device, and the control device is used to send a second control instruction to the spreader when the width measurement value is less than the preset width standard value, and the second control instruction is used to instruct the spreader to increase the width of the curtain.

15. The curtain fabric control system according to claim 12, characterized in that: The control system of the curtain fabric further comprises: an edge expander, which is used to receive a third control instruction sent by the control device, wherein the control device is used to send a third control instruction to the edge expander when the density measurement value is greater than the preset density standard value, and the third control instruction is used to instruct the edge expander to reduce the density of the curtain fabric; The edge expander is also used to receive a fourth control instruction sent by the control device, wherein the control device is used to send a fourth control instruction to the edge expander when the density measurement value is less than the preset density standard value, and the fourth control instruction is used to instruct the edge expander to increase the density of the curtain fabric.

16. The curtain fabric control system according to claim 13, characterized in that: The control system of the cord fabric further comprises: a calender roller, which is used to receive a fifth control instruction sent by the control device, wherein the fifth control instruction is used to instruct the calender roller to adjust a calendering speed.

17. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is executed, the device where the non-volatile storage medium is located is controlled to execute the curtain control method according to any one of claims 1 to 9.

18. An electronic device, characterized in that: include: A memory and a processor, wherein the processor is used to run a program stored in the memory, wherein the curtain control method according to any one of claims 1 to 9 is executed when the program is run.

19. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the curtain control method according to any one of claims 1 to 9 is implemented.

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