Tire bead straightening device and method

Abstract

The application relates to a straightening device and method for tire steel rings, and belongs to the technical field of tire production and processing equipment. The straightening device comprises a main body frame, guide rails and a mounting base surface arranged on the main body frame, a pretreatment module arranged at the feeding end of the main body frame, a clamping device for clamping a steel ring and a feeding roller driven by a servo motor, a straightening module arranged on the mounting base surface of the main body frame and located downstream of the pretreatment module, the straightening module comprising a primary straightening roller set and a dynamic compensation straightening roller, and a detection module comprising a first visual detection station and a second visual detection station fixed to the main body frame, the first visual detection station being located between the pretreatment module and the straightening module, and the second visual detection station being located behind the straightening module. The application can adapt to individual differences and fluctuations of materials.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire production and processing equipment, in particular to a tire bead production and processing straightening device and method. BACKGROUND

[0002] In the production and processing of tire beads, traditional straightening techniques mainly rely on straightening devices with fixed parameters. Once the process parameters such as straightening force and conveying speed of these devices are set, they remain unchanged. The design and operation of these devices are based on standard or average material properties.

[0003] However, in actual production, there are objective differences in the physical properties of different batches and different specifications of steel beads, such as elasticity and rigidity. The fluctuation of these material properties makes it impossible for fixed processing parameters to achieve ideal straightening results for each steel bead. This situation leads to poor straightness consistency of the final product, making it difficult to ensure the uniform implementation of high-quality standards.

[0004] The above situation and deficiencies are mainly due to the lack of individual difference perception and real-time adjustment capability of traditional straightening devices. The devices cannot detect the specific physical properties of steel beads online, and lack of execution mechanisms and control logic to dynamically correct the straightening parameters based on the detection results. As a result, when encountering steel beads with material properties deviating from standard values, the device cannot make adaptive adjustments, thereby affecting the quality stability and consistency of the final product.

[0005] The above information disclosed in the background section is only used to strengthen the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to provide a tire bead production and processing straightening device and method to solve the problems raised in the background.

[0007] The technical solution of the present application is as follows:

[0008] A main body frame is provided with guide rails and a mounting base on the main body frame;

[0009] A pretreatment module is installed at the feed end of the main body frame. The pretreatment module includes a gripper for clamping the steel bead and a feed-in roller driven by a servo motor. A swing arm is rotatably installed inside the pretreatment module.

[0010] A straightening module is installed on the mounting base of the main body frame and located downstream of the pretreatment module. The straightening module includes a primary straightening wheel set and a dynamic compensation straightening wheel.

[0011] The detection module comprises a first visual detection station and a second visual detection station fixed to the main body frame, the first visual detection station is located between the pretreatment module and the straightening module, and the second visual detection station is located after the straightening module.

[0012] The controller is electrically connected with the servo motor of the pretreatment module, the dynamic compensation straightening wheel of the straightening module, and the first visual detection station and the second visual detection station of the detection module.

[0013] Preferably, the pretreatment module further comprises a tension detection wheel arranged at one end of a swing arm, the other end of the swing arm abuts against a tension sensor, the tension detection wheel is used to transmit the tension change of the bead to the tension sensor through the swing arm, and a tension signal is generated by the tension sensor and sent to the controller.

[0014] Preferably, the dynamic compensation straightening wheel comprises a linear module driven by a high-response servo motor, the linear module is coupled to the dynamic compensation straightening wheel, and is used to change the pressing depth of the dynamic compensation straightening wheel on the bead in real time and accurately according to the instruction of the controller.

[0015] Preferably, the first visual detection station comprises a line array camera for capturing the profile of the bead and a laser displacement sensor for measuring the diameter of the bead; and the second visual detection station comprises a line array camera for measuring the residual curvature of the straightened bead.

[0016] A straightening method for tire bead production and processing, comprising:

[0017] The controller controls the first visual detection station to collect the initial geometric characteristics of the bead, and determines the estimated rebound coefficient based on comparison between the initial geometric characteristics and a pre-stored rebound characteristic database;

[0018] The controller instructs the dynamic compensation straightening wheel to apply a proactive detection pressing amount during the initial processing stage of the bead, and controls the second visual detection station to measure the residual curvature response amount caused by the proactive detection pressing amount, and then calculates and updates the real-time dynamic rebound coefficient;

[0019] The controller calculates a basic pressing amount based on the real-time dynamic rebound coefficient, and sets the basic pressing amount as the pressing depth of the primary straightening wheel set;

[0020] The controller continuously controls the second visual detection station to measure the real-time residual curvature during the subsequent processing stage, and calculates a compensation pressing amount based on the deviation between the real-time residual curvature and the target straightness, which is used to instruct the dynamic compensation straightening wheel to perform dynamic compensation.

[0021] Preferably, the step of calculating and updating the real-time dynamic springback coefficient comprises: establishing a dynamic causal relationship model between the input variable of the active probe indentation and the output variable of the residual curvature response, and solving the model to obtain the real-time dynamic springback coefficient.

[0022] Preferably, the initial geometric characteristics include three-dimensional curvature profile data and diameter data continuously collected along the length direction of the bead.

[0023] Preferably, after the step of the controller calculating the base indentation based on the real-time dynamic springback coefficient, the method further comprises: the controller setting the conveying speed and tension matching the material characteristics based on the real-time dynamic springback coefficient, and instructing the feed roller and the gripper to execute.

[0024] Preferably, the tension is fed back in real time by a tension detection wheel, for closed-loop tension control by the controller.

[0025] The present application provides a tire bead straightening device and method by improvement, compared with the prior art, has the following improvements and advantages:

[0026] 1. The core difference of the present application is to establish a closed-loop adaptive control system including prediction, measurement, calibration and compensation. The system first collects the initial geometric characteristics of the bead through the first visual detection station, and compares with the database to make preliminary prediction. In the initial stage of processing, the real-time dynamic springback coefficient of the current bead is accurately calibrated by applying active probe indentation and measuring its response. In the whole processing process, the residual curvature is continuously fed back by the second visual detection station, and the dynamic compensation straightening wheel is instructed to make real-time fine adjustment. This processing method enables the device to generate individualized straightening scheme for each bead, and gets rid of the dependence on fixed parameters, so as to adapt to the individual differences and fluctuations of materials.

[0027] 2. The present application is not only to adjust the indentation depth of the straightening wheel. While calculating the base indentation based on the real-time dynamic springback coefficient, the controller will also set the conveying speed and processing tension matching the material rigidity reflected by the coefficient, and instruct the feed roller and the gripper to execute. For example, for the bead with strong springback, the conveying speed will be appropriately reduced and greater tension will be applied. In addition, through the real-time feedback of the tension detection wheel and the tension sensor, the processing tension is controlled in closed loop, to ensure that the actual tension is stable in the target interval matching the material characteristics. This comprehensive regulation of indentation, speed, tension and other variables makes the whole processing chain achieve synergistic optimization, further ensuring the stability and high quality of straightening effect.

[0028] 3.The scheme can significantly improve the adaptability to different batches and different specifications of steel wire ring materials, and fundamentally improve the straightness consistency of the final product, ensuring the high uniformity of product quality. At the same time, the automatic online calibration and real-time compensation function reduces the need for manual intervention and dependence on the experience of operators, improving the automation level and stability of the production process. BRIEF DESCRIPTION OF DRAWINGS

[0029] The application will be further explained in conjunction with the drawings and examples:

[0030] Figure 1 is a schematic diagram of the overall structure of a tire steel wire ring production and processing straightening device of the application;

[0031] Figure 2 is a schematic diagram of the structure of the pretreatment module;

[0032] Figure 3 is a schematic diagram of the structure of the straightening module and the detection module;

[0033] Figure 4 is a schematic diagram of the process flow structure of the method of the application;

[0034] In the figure: 100, main body frame; 110, guide rail; 120, installation base surface; 200, pretreatment module; 210, gripper; 220, feed roller; 230, tension detection wheel; 300, straightening module; 310, primary straightening wheel set; 320, dynamic compensation straightening wheel; 400, detection module; 410, first visual detection station; 411, line array camera; 412, laser displacement sensor; 420, second visual detection station. DETAILED DESCRIPTION

[0035] To make the purpose, technical scheme and advantages of the application clearer and more apparent, the application will be further described in detail below with specific examples

[0036] Example 1

[0037] Please refer to Figures 1-3 The application provides a tire steel wire ring production and processing straightening device, which comprises:

[0038] The main body frame 100 is provided with a guide rail 110 and an installation base surface 120;

[0039] The pretreatment module 200 is installed at the feed end of the main body frame 100, and the pretreatment module 200 comprises a gripper 210 for clamping the steel wire ring and a feed roller 220 driven by a servo motor; a swing arm is rotatably installed inside the pretreatment module 200;

[0040] The straightening module 300 is installed on the installation base surface 120 of the main body rack 100 and is located downstream of the pretreatment module 200, and the straightening module 300 comprises a primary straightening wheel set 310 and a dynamic compensation straightening wheel 320;

[0041] The detection module 400 comprises a first visual detection station 410 and a second visual detection station 420 fixed on the main body rack 100, the first visual detection station 410 is located between the pretreatment module 200 and the straightening module 300, and the second visual detection station 420 is located after the straightening module 300;

[0042] The controller is electrically connected with the servo motor of the pretreatment module 200, the dynamic compensation straightening wheel 320 of the straightening module 300 and the first visual detection station 410 and the second visual detection station 420 of the detection module 400, respectively.

[0043] The straightening device for tire bead production and processing provided by the embodiment is used to solve the problem that the straightening device in the prior art has fixed parameters and cannot adapt to the material characteristic changes of different batches and different specifications of steel wire beads, resulting in poor consistency of product straightness. The main body rack 100 of the device provides a stable installation reference for each functional module, the guide rail 110 provided thereon is used to guide the conveying path of the steel wire bead, and the installation base surface 120 ensures the relative position accuracy of each module; the pretreatment module 200 cooperates with the feeding roller 220 through the gripper 210 to realize stable conveying of the steel wire bead. The straightening module 300 applies physical straightening to the steel wire bead through the combination of the primary straightening wheel set 310 and the dynamic compensation straightening wheel 320. The key of this structure lies in the cooperation of the detection module 400 and the controller. The first visual detection station 410 obtains the original shape data of the steel wire bead before it enters the straightening module 300, and the second visual detection station 420 measures the straightening effect after the steel wire bead leaves the straightening module 300. The controller estimates the straightening parameters based on the data of the first visual detection station 410 and dynamically adjusts the action of the straightening module 300 according to the real-time feedback data of the second visual detection station 420. This processing method enables the device to perceive the individual characteristics of each steel wire bead and make real-time corrections during the processing process, thereby improving the adaptability to different materials and the straightness of the final product;

[0044] The gripper 210 is a component that can exert a fixing action on the steel wire bead, and the implementation manner is not limited to one, for example, it can be a set of pneumatic three-jaw chucks, which fix one end of the steel wire bead through the inner diameter or outer diameter clamping mode. The controller can be a Siemens S7-1200 series PLC.

[0045] The pretreatment module 200 further comprises a tension detection wheel 230 arranged at one end of the swing arm, and the other end of the swing arm abuts against the tensile and compressive force sensor. The tension detection wheel 230 is used to transmit the tension change of the wire ring to the tensile and compressive force sensor through the swing arm, and a tension signal is generated by the tensile and compressive force sensor and sent to the controller.

[0046] The tension detection wheel 230 in the embodiment functions to monitor the tension state of the wire ring in the conveying process in real time. In the straightening process of the wire ring, stable and matched tension is a prerequisite for ensuring the uniformity of the straightening effect. Too small tension may cause the wire ring to slip or unstable feeding in the straightening wheel set, and too large tension may cause excessive stretching of the wire ring, and even affect the microstructure of the material. The tension detection wheel 230 contacts the wire ring through the idler wheel. The tension fluctuation of the wire ring causes a slight position change of the idler wheel. This change is amplified through the lever structure of the swing arm and transmitted to the tensile and compressive force sensor. The tensile and compressive force sensor is an element capable of converting a pressure signal into an electric signal. For example, a Mettler-Toledo MT series S-type weighing sensor can be selected to convert the received pressure change into a continuous electric signal and transmit it to the controller. After receiving the signal, the controller obtains the real-time tension value. This design enables the controller to not only know the preset feeding speed, but also accurately perceive the stress state of the wire ring in the straightening process, thereby providing data input for the subsequent controller to perform fine tension adjustment based on the material characteristics, and ensuring the stability of the machining process.

[0047] The dynamic compensation straightening wheel 320 comprises a linear module driven by a high-response servo motor, which is coupled to the dynamic compensation straightening wheel 320 and used to change the pressing depth of the dynamic compensation straightening wheel 320 on the wire ring in real time and accurately according to the instruction of the controller.

[0048] The dynamic compensation straightening wheel 320 in the embodiment aims to make small and rapid corrections to the residual bending of the wire ring. The primary straightening wheel set 310 provides a basic and macro straightening force, but due to the problems such as uneven material quality and slight diameter change of the wire ring itself, it is difficult to achieve high straightness by fixed primary straightening.

[0049] This two-stage straightening strategy combining macroscopic presetting and microscopic compensation decouples the straightening task: the primary straightening wheel set 310 is responsible for handling the predictable macro bending determined by the overall characteristics of the material, and the dynamic compensation straightening wheel 320 focuses on dealing with the unpredictable local unevenness randomly occurring along the length direction of the wire.

[0050] The dynamic compensation straightening roller 320 achieves its function through a linear module driven by a high-response servo motor. The high-response servo motor, such as the Yaskawa Sigma-7 series, can receive high-frequency commands from the controller and instantly start, stop, and rotate. The linear module is a mechanism that converts rotational motion into linear motion, commonly implemented using a ball screw structure. The rotation of the servo motor is converted into precise linear displacement of the linear slide via the ball screw, thereby driving the straightening roller to change the indentation depth of the wire ring. When the controller calculates the required indentation amount based on data from the second vision inspection station 420, it sends a command to the servo motor, which precisely rotates a specific angle. The linear module then drives the straightening roller to complete a micron-level adjustment of the indentation depth. This structure enables the device to perform real-time fine-tuning of the straightening effect, compensating for the deficiencies of primary straightening and serving as a key execution link for achieving high-precision straightening.

[0051] The first visual inspection station 410 includes a line scan camera 411 for capturing the outline of the wire loop and a laser displacement sensor 412 for measuring the diameter of the wire loop; the second visual inspection station 420 includes a line scan camera 411 for measuring the residual curvature of the wire loop after straightening.

[0052] The detection module 400 in this embodiment is designed to acquire the geometric morphology data of the wire ring before and after straightening in a non-contact manner. The line scan camera 411 of the first vision inspection station 410 works in conjunction with the laser displacement sensor 412 to acquire complete initial state information of the wire ring. The line scan camera 411, such as the Keyence LJ-V series, is installed perpendicular to the wire ring conveying path. As the wire ring passes through, the camera scans line by line and stitches them into a complete two-dimensional contour image for calculating its initial three-dimensional curvature. At the same time, the laser displacement sensor 412, such as the Keyence LK-G series, emits a laser beam onto the surface of the wire ring and receives the reflected light, accurately calculating the change in the position of the light spot to obtain the geometric morphology data. The diameter change of the wire loop along its length is measured; the combination of these two data points provides a basis for the controller to comprehensively evaluate the original deformation degree and material consistency of the wire loop; the line scan camera 411 of the second vision inspection station 420 is installed and operates in the same way as the camera of the first station. Its function is to measure the small remaining curvature of the wire loop after primary straightening and dynamic compensation straightening, i.e., residual curvature; this measurement result is a direct indicator for evaluating the current straightening effect and is also the basis for the controller to make dynamic compensation adjustments; the data from the first vision inspection station 410 is predictive and used to set initial parameters; the data from the second vision inspection station 420 is feedback and used for real-time correction.

[0053] The connection between the line scan camera 411 and laser displacement sensor 412 of the first vision inspection station 410 and the line scan camera 411 of the second vision inspection station 420 is to realize the data flow of measurement-correction-remeasurement. As long as the geometric data before and after correction can be provided to the controller for calculation, the specific connection method is not limited. For example, all vision devices can be connected to the controller through industrial Ethernet, and the controller can uniformly manage data acquisition and synchronization. Alternatively, a dedicated data acquisition card can be used to convert the sensor signals into digital signals that the controller can recognize.

[0054] Example 2

[0055] Please see Figure 4 A method for straightening tire steel wire rings during production and processing, comprising:

[0056] The controller controls the first vision inspection station 410 to collect the initial geometric features of the wire ring, and determines the estimated springback coefficient based on the comparison between the initial geometric features and the pre-stored springback characteristic database.

[0057] During the initial processing stage of the wire ring, the controller instructs the dynamic compensation straightening wheel 320 to apply an active detection indentation, and controls the second vision inspection station 420 to measure the residual curvature response caused by the active detection indentation, thereby calculating and updating the real-time dynamic springback coefficient.

[0058] The controller calculates the basic pressing amount based on the real-time dynamic springback coefficient and sets the basic pressing amount as the pressing depth of the primary straightening wheel set 310;

[0059] In the subsequent processing stage, the controller continuously controls the second vision inspection station 420 to measure the real-time residual curvature, and calculates the compensation pressing amount based on the deviation between the real-time residual curvature and the target straightness, which is used to instruct the dynamic compensation straightening wheel 320 to perform dynamic compensation.

[0060] The core of the method provided in this embodiment is to generate a personalized straightening scheme for each steel wire ring through a self-learning and adaptive approach. The starting point of the method is that the controller uses the first vision detection station 410 to obtain the initial geometric features of the steel wire ring and compares them with the database to obtain the estimated springback coefficient value. The role of this estimated value is to provide a reasonable initial guess for subsequent accurate calibration, avoiding completely blind trial and error.

[0061] The purpose of this estimate is to provide a reasonable initial guess for subsequent accurate calibration, avoiding completely blind trial and error. This not only greatly improves calibration efficiency, but also ensures the stability and yield of the initial processing stage by setting initial parameters close to the optimal value.

[0062] This rebound characteristic database can be pre-established by conducting a large number of physical experiments on standard steel wire ring samples of various specifications and batches. During the experiments, the rebound data corresponding to each sample under different initial geometric deformations and after applying a series of known straightening forces are recorded. Through data fitting and calibration, a mapping relationship between initial geometric characteristics and rebound coefficient is formed and stored in the database.

[0063] The method enters the crucial online calibration stage. When processing a small section of the front end of the wire coil, the controller actively applies a known, minute change in indentation to the dynamic compensation straightening wheel 320. This is equivalent to actively questioning the material properties of the wire coil. The second vision inspection station 420 is responsible for capturing the wire coil's response to this question, i.e., how much the residual curvature has changed. The controller analyzes this question-and-answer pair, i.e., the relationship between the change in indentation and the curvature response, to derive a real-time dynamic springback coefficient that accurately reflects the true physical properties of the current wire coil. This coefficient is more accurate than the database estimate because it comes from direct testing of the object itself.

[0064] This real-time calibration mechanism ensures that the straightening parameters can not only adapt to batch-to-batch differences in steel wire coils, but also dynamically track and compensate for intra-batch fluctuations in the same steel wire coil caused by material inhomogeneity or changes in processing environment temperature, thereby achieving higher-dimensional adaptive control.

[0065] After obtaining the accurate springback coefficient, the controller can calculate the corresponding basic indentation amount and set it for the primary straightening roller set 310 to complete the precise straightening of most of the subsequent wire coils. There are several specific setting methods; for example, the controller can display the calculated basic indentation amount on the equipment's human-machine interface, allowing the operator to manually set the indentation depth to the target position by rotating the precision adjusting screws on the primary straightening roller set 310 based on this value. Alternatively, as an optional automation method, each adjusting screw of the primary straightening roller set 310 can be coupled to a stepper motor or servo motor, with the controller directly issuing commands to drive the motors to rotate, thereby automatically setting the basic indentation amount without manual intervention.

[0066] Throughout the processing, the controller also uses the second vision inspection station 420 to continuously monitor the straightening effect. Once a slight deviation from the ideal straightness is detected, the compensation amount is calculated, and the dynamic compensation straightening wheel 320 is instructed to make corrections. This method integrates prediction, measurement, calibration and compensation, freeing the device from dependence on fixed parameters and enabling it to adapt to individual differences and fluctuations in materials.

[0067] The steps for calculating and updating the real-time dynamic rebound coefficient include: establishing a dynamic causal relationship model between the active probe indentation as an input variable and the residual curvature response as an output variable, and solving the model to obtain the real-time dynamic rebound coefficient.

[0068] In this embodiment, the calculation process of the real-time dynamic rebound coefficient is a process of establishing and solving a physical model. The purpose is to quantify the rebound characteristics of the wire coil. The derivation process is as follows: the controller records the applied active detection indentation as input data and records the residual curvature response measured synchronously by the second vision detection station 420 as output data. Since the indentation is the cause of curvature change, there is a direct causal relationship between the two. The algorithm inside the controller will establish a mathematical model to describe this relationship, such as a simple linear proportional model or a more complex nonlinear model. The essence of the model is to reflect how much straightening force needs to be applied to produce a certain curvature change. By solving this model, such as calculating the slope or key parameters of the model, the numerical value can be obtained. This numerical value is the real-time dynamic rebound coefficient. If a small change in indentation can cause a large change in residual curvature, the solved coefficient value will be small, indicating that the material has weak springback and is easy to straighten; conversely, if a large change in indentation is required to cause a small change in residual curvature, the solved coefficient value will be large, indicating that the material has strong springback and requires a larger straightening force; in a specific implementation, this dynamic causal relationship model can be simplified to a linear relationship:

[0069] in, The active detection pressure applied by the straightening wheel 320 is dynamically compensated by the controller command; It is the residual curvature response measured by the second vision inspection station 420; This is the proportional coefficient to be solved, which directly reflects the current springback characteristics of the wire coil. Its value is positively correlated with the real-time dynamic springback coefficient. According to this model, if a large change in indentation is required... Only then can a tiny change in residual curvature be caused. The coefficient values ​​obtained by solving A larger coefficient indicates that the material has strong springback and requires a greater straightening force; conversely, if a small change in indentation can cause a large change in residual curvature, then the calculated coefficient value... The smaller the spring size, the weaker the material's resilience, making it easier to straighten.

[0070] The controller records at least one corresponding set during the calibration phase. and The data can be obtained by solving this linear equation. Furthermore, those skilled in the art can also establish more complex nonlinear models such as second-order polynomials to solve the problem, depending on the different accuracy requirements. These are all conventional technical choices under the concept of this invention.

[0071] In this way, the method transforms the abstract rebound characteristics into concrete numerical values ​​that can be used for engineering calculations.

[0072] The initial geometric features include three-dimensional curvature profile data and diameter data continuously acquired along the length of the wire coil.

[0073] The initial geometric features defined in this embodiment aim to comprehensively and multidimensionally describe the original state of the wire coil when it enters the device. The three-dimensional curvature profile data, acquired by the linear array camera 411 of the first vision detection station 410, reflects the bending shape of the wire coil in space, including its direction and degree of bending. The diameter data, acquired by the laser displacement sensor 412, reflects the thickness variation of the wire coil along its length. Combining these two sets of data allows the controller to construct a digital model of the wire coil. This provides more information than measuring only a single parameter, such as only curvature or only diameter. For example, if the controller detects a sudden increase in the curvature of a segment of the wire coil while its diameter is less than the average, it can be inferred that this location may be a material defect point, requiring special attention in subsequent processing. Therefore, acquiring comprehensive and continuous initial geometric features is the foundation for accurate prediction of springback characteristics and the formulation of reasonable straightening strategies.

[0074] After the controller calculates the basic pressing amount based on the real-time dynamic rebound coefficient, the following steps are also included: the controller sets the conveying speed and tension that match the material properties based on the real-time dynamic rebound coefficient, and instructs the feed roller 220 and the clamp 210 to execute.

[0075] The added step in this embodiment aims to achieve global collaborative optimization of processing parameters. After calculating the precise basic pressing amount, the controller not only adjusts the force of the straightening roller but also simultaneously adjusts the conveying speed and processing tension of the wire ring. This is because the straightening process is a system influencing multiple variables, and speed and tension are also key factors affecting the straightening effect. Based on the known real-time dynamic springback coefficient, the controller can infer the rigidity of the material. For wire rings with strong springback characteristics and high rigidity, it may be necessary to appropriately reduce the conveying speed and apply greater tension to ensure that the straightening roller has sufficient action time and to prevent the wire ring from shifting under strong straightening force. For wire rings with weak springback characteristics and low rigidity, the conveying speed can be appropriately increased and a smaller tension can be used to improve production efficiency and avoid unnecessary stretching of the wire ring. The controller precisely executes these matched parameter settings by issuing commands to the servo motor driving the feed roller 220 and the pneumatic system controlling the clamp 210. This step expands the understanding of material properties from simply adjusting the amount of material pressed in to a comprehensive control of the entire processing chain, enabling a better match between the overall operating state of the equipment and the intrinsic properties of the material.

[0076] The tension is fed back in real time by the tension detection wheel 230 applied to the above device, which is used by the controller for closed-loop tension control.

[0077] The further definition of the tension control method in this embodiment aims to ensure that the set target tension can be executed accurately and stably. The controller sets a target tension value that matches the material properties, but setting alone is not enough; a mechanism is also needed to ensure that the actual tension can be stably maintained at this target value. The tension detection wheel 230 and its connected tension and compression sensors provide real-time feedback data. The controller continuously compares the actual tension measurement value from the sensor with the preset target tension value. If the actual tension is found to be lower than the target value, the controller will fine-tune the servo motor speed of the feed roller 220 or the clamping force of the clamp 210 to increase the tension. If the actual tension is found to be higher than the target value, the opposite adjustment is made. This continuous process of setting-measuring-comparing-adjusting makes the tension control not an open command, but a feedback-based adjustment system. It can overcome various interferences that may occur during processing, such as small fluctuations in motor load and changes in the friction of the guide rail 110, and always keep the actual tension stable within the ideal range most suitable for the current material properties, thus ensuring high-quality and highly consistent straightening results.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for straightening tire steel wire rings during production, characterized in that, include: The main frame (100) is provided with guide rails (110) and mounting base (120). A pre-processing module (200) is installed at the feeding end of the main frame (100). The pre-processing module (200) includes a clamp (210) for clamping the wire ring and a feeding roller (220) driven by a servo motor. A swing arm is rotatably installed inside the pre-processing module (200). A straightening module (300) is installed on the mounting base (120) of the main frame (100) and located downstream of the pretreatment module (200). The straightening module (300) includes a primary straightening wheel group (310) and a dynamic compensation straightening wheel (320). The detection module (400) includes a first visual inspection station (410) and a second visual inspection station (420) fixed on the main frame (100). The first visual inspection station (410) is located between the preprocessing module (200) and the straightening module (300), and the second visual inspection station (420) is located after the straightening module (300). The controller is electrically connected to the servo motor of the preprocessing module (200), the dynamic compensation straightening wheel (320) of the straightening module (300), and the first vision inspection station (410) and the second vision inspection station (420) of the detection module (400), respectively. The controller controls the first vision inspection station (410) to collect the initial geometric features of the wire loop, and determines the estimated springback coefficient based on the initial geometric features compared with the pre-stored springback characteristic database. During the initial processing stage of the wire ring, the controller instructs the dynamic compensation straightening wheel (320) to apply an active detection indentation, and controls the second vision inspection station (420) to measure the residual curvature response caused by the active detection indentation, thereby calculating and updating the real-time dynamic springback coefficient. The controller calculates the basic indentation based on the real-time dynamic rebound coefficient and sets the basic indentation as the indentation depth of the primary straightening wheel assembly (310); In the subsequent processing stage, the controller continuously controls the second vision inspection station (420) to measure the real-time residual curvature, and calculates the compensation indentation based on the deviation between the real-time residual curvature and the target straightness, which is used to instruct the dynamic compensation straightening wheel (320) to perform dynamic compensation.

2. The method for straightening and processing tire steel wire rings according to claim 1, characterized in that, The preprocessing module (200) also includes a tension detection wheel (230), which is located at one end of the swing arm and the other end of the swing arm abuts against the tension sensor. The tension detection wheel (230) is used to transmit the tension change of the wire coil to the tension sensor through the swing arm, and the tension sensor generates a tension signal and sends it to the controller.

3. The method for straightening tire steel wire rings during production and processing according to claim 1, characterized in that, The dynamic compensation straightening wheel (320) includes a linear module driven by a high-response servo motor. The linear module is coupled to the dynamic compensation straightening wheel (320) and is used to change its pressing depth on the wire coil in real time and accurately according to the instructions of the controller.

4. The method for straightening tire steel wire rings during production and processing according to claim 1, characterized in that, The first visual inspection station (410) includes a line scan camera (411) for capturing the outline of the wire loop and a laser displacement sensor (412) for measuring the diameter of the wire loop; the second visual inspection station (420) includes a line scan camera (411) for measuring the residual curvature of the wire loop after straightening.

5. The method for straightening tire steel wire rings during production and processing according to claim 1, characterized in that, The step of calculating and updating the real-time dynamic rebound coefficient includes: establishing a dynamic causal relationship model between the active probe indentation as an input variable and the residual curvature response as an output variable, and solving the model to obtain the real-time dynamic rebound coefficient.

6. The method for straightening tire steel wire rings during production and processing according to claim 1, characterized in that, The initial geometric features include three-dimensional curvature profile data and diameter data continuously acquired along the length of the wire coil.

7. The method for straightening tire steel wire rings during production and processing according to claim 1, characterized in that, After the controller calculates the basic pressing amount based on the real-time dynamic rebound coefficient, the method further includes: the controller sets a conveying speed and tension that match the material properties based on the real-time dynamic rebound coefficient, and instructs the feed roller (220) and the clamp (210) to perform the operation.

8. The method for straightening tire steel wire rings during production and processing according to claim 7, characterized in that, The tension is fed back in real time by the tension detection wheel (230) and used by the controller for closed-loop tension control.

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