A fiber reinforced composite mesh production system

Abstract

This invention relates to the field of mesh weaving technology, and more particularly to a fiber-reinforced composite mesh production system, comprising a mesh weaving machine for inserting and twisting transverse and longitudinal ribs to form a mesh structure; a twist adjustment module for responding to the mesh weaving state by obtaining the deviation contribution rate of each longitudinal rib based on the twist deviation value of each longitudinal rib, to locate the source of twist unevenness as a single longitudinal rib or multiple longitudinal ribs, and adjusting the winding speed of the twisting of the longitudinal ribs or adjusting the design twist based on the average deviation direction of the longitudinal ribs; and a deviation adjustment module for responding to the degree of influence by determining the type of mesh twist deviation based on several instantaneous deviations, and adjusting the winding speed or design twist in conjunction with the twist deviation trend, wherein the twist deviation trend is determined based on the cumulative effect coefficient of twist deviation of several grids. This invention improves the twist uniformity and grid size consistency of mesh weaving through progressive control.

Description

Technical Field

[0001] This invention relates to the field of mesh fabrication technology, and in particular to a fiber-reinforced composite mesh production system. Background Technology

[0002] Fiber-reinforced composite mesh has important applications in civil and structural engineering. During construction, a layer of composite mesh is laid in the middle. Due to its mesh structure, it has strong cross-linking characteristics, which can improve the rigidity and stability of the structure in all directions and reduce the risk of collapse. Fiber-reinforced mesh is often used for reinforcement in the construction of roads and slope protection, building walls, dams, and other projects.

[0003] Fiber-reinforced composite mesh is made of resin as the matrix and fiber as the reinforcing material. The fibers are interwoven into transverse and longitudinal fiber ribs through a mechanical structure, and then formed after heating and curing.

[0004] In conventional wire mesh production, the cross ribs need to be pre-produced using specialized equipment and then wound up by a winding machine. During wire mesh production, these ribs are unwound and fed into the longitudinal ribs. Because the cross ribs need to be produced separately, manual operation of the equipment is required, and it occupies a large space; moreover, only one cross rib can be fed at a time, resulting in low production efficiency. Currently, most glue tanks use conventional glue tanks for fiber impregnation, leading to significant waste. Existing equipment has a slow production speed, resulting in low production efficiency.

[0005] Chinese Patent Publication No. CN121018998A discloses a fiber-reinforced mesh production system, including a positioning and yarn-separating frame; a glue-impregnation assembly is provided on the side of the positioning and yarn-separating frame, a weaving assembly is provided on the side of the glue-impregnation assembly, a guide assembly is provided at one end of the weaving assembly, and a cutting assembly is provided on the side of the guide assembly; the glue-impregnation assembly includes a machine body, an unwinding shaft is rotatably mounted inside the machine body, a glue-impregnation tank is fixedly mounted on the side of the machine body, an mounting frame is fixedly mounted on the top of the glue-impregnation tank, a rotating shaft is rotatably mounted on the bottom of the mounting frame, a connecting frame is fixedly mounted on the side of the glue-impregnation tank, and a transmission shaft is rotatably mounted on the top of the connecting frame. By adapting to weft fiber bundles of different diameters under different conditions, the system achieves a higher degree of automation in the movement of the weft fiber bundles, and the movement of the weft fiber bundles is more stable, resulting in higher precision during weaving and a wider range of applications. However, the fiber-reinforced mesh production system has the following problems: Existing technologies cannot quantify the comprehensive impact of uneven twist on mesh quality in real time, making it difficult to accurately locate the source of unevenness and implement graded control, resulting in blind twist adjustment, high scrap rate, and poor mesh size consistency. Summary of the Invention

[0006] To address this, the present invention provides a fiber-reinforced composite mesh production system to overcome the problems in the prior art, such as the inability to quantify the comprehensive impact of uneven twist on mesh quality in real time, and the difficulty in accurately locating the source of unevenness and implementing graded control.

[0007] To achieve the above objectives, the present invention provides a fiber-reinforced composite mesh production system, comprising: A mesh weaving machine is used for inserting and twisting horizontal and vertical ribs to form a mesh structure. A weaving status module, which is connected to the mesh weaving machine, is used to determine the mesh weaving status based on the twist unevenness coefficient obtained by the interlacing point offset. The twist adjustment module is used to respond to the mesh weaving state and obtain the deviation contribution rate of each longitudinal rib based on the twist deviation value of each longitudinal rib, so as to locate the source of uneven twist as a single longitudinal rib or multiple longitudinal ribs, and adjust the winding speed of the longitudinal rib twisting or adjust the design twist based on the average deviation direction of the longitudinal rib. The deviation degree module, which is connected to the twist adjustment module, is used to obtain the cumulative effect coefficient of twist deviation based on the adjusted design twist and the instantaneous deviation of the current grid of each longitudinal rib, so as to determine the degree of influence of the twist deviation of the mesh, adjust the cutting frequency or determine the type of twist deviation of the mesh. The deviation adjustment module is used to determine the type of twist deviation of the mesh based on several instantaneous deviations in response to the degree of influence, and to adjust the winding speed or design twist in combination with the twist deviation trend, wherein the twist deviation trend is determined based on the cumulative effect coefficient of twist deviation of several meshes. The negative feedback module is used to obtain the adjustment effect coefficients corresponding to the adjustment of winding speed and design twist based on the cumulative effect coefficients of the current grid and subsequent grids, calculate the adjustment efficiency index, and determine the adjustment range of winding speed or design twist if the adjustment effect is not ideal.

[0008] Furthermore, the mesh weaving machine divides the longitudinal fiber yarn into two strands through the weaving component, and the transverse fiber yarn passes through the two strands of longitudinal fiber yarn using the feeding mechanism. The longitudinal fiber yarn is twisted and twisted by the winding component. The weaving status module obtains the planar coordinates of several interlacing points to determine the offset of the interlacing points. If the offset of the interlacing points is greater than the offset threshold, the weaving status module determines that the weaving status of the mesh is that the interlacing points are unstable and issues an alarm signal. If the offset of the interlacing point is less than or equal to the offset threshold, the weaving status module obtains the twist unevenness coefficient to determine the weaving status of the mesh.

[0009] Furthermore, the weaving status module obtains the actual twist of several longitudinal ribs within the current grid and determines the twist unevenness coefficient; If the twist unevenness coefficient is less than or equal to the coefficient threshold, the weaving status module determines that the mesh weaving status is normal. If the twist unevenness coefficient is greater than the coefficient threshold, the weaving status module determines that the mesh weaving status is uneven twist and obtains the deviation contribution rate of each longitudinal rib to locate the source of unevenness.

[0010] Furthermore, the twist adjustment module obtains the twist deviation value of each longitudinal rib based on the actual twist of each longitudinal rib, and determines the deviation contribution rate of each longitudinal rib; If the maximum deviation contribution is greater than or equal to the contribution threshold, the twist adjustment module determines that more than half of the unevenness is contributed by a single longitudinal rib, and the unevenness is highly concentrated. The winding assembly is then adjusted to control the winding speed of the corresponding longitudinal rib to twist. If the maximum deviation contribution is less than the contribution threshold, the twist adjustment module determines that the uneven distribution is on multiple longitudinal ribs and adjusts the design twist by determining the average deviation direction of the longitudinal ribs.

[0011] Furthermore, the unevenly distributed longitudinal ribs are obtained by the deviation degree module, which uses the adjusted design twist and the actual twist of each longitudinal rib in the current grid to calculate the instantaneous deviation of each longitudinal rib and determine the cumulative effect coefficient of twist deviation. If the cumulative effect coefficient is less than or equal to the first effect threshold, the deviation degree module determines that the twist deviation of the mesh is at the first level of influence, and the twist deviation is within the normal range; If the cumulative effect coefficient is greater than the first effect threshold and less than or equal to the second effect threshold, the deviation degree module determines that the twist deviation of the net is in the second degree of influence and determines the deviation type of the twist deviation of the net. If the cumulative effect coefficient is greater than the second effect threshold, the deviation degree module determines that the twist deviation of the mesh is at the third level of influence, indicating that the current mesh has quality defects, and adjusts the cutting frequency of the finished product cutting.

[0012] Furthermore, the twist deviation of the mesh is at the second level of influence, and the deviation adjustment module calculates the coefficient of variation of the instantaneous deviation of each longitudinal rib; If the coefficient of variation is greater than the variation threshold, the deviation adjustment module determines that the deviation is concentrated in a few longitudinal ribs and the deviation type is local deviation. If the coefficient of variation is less than or equal to the variation threshold, the deviation adjustment module determines that the deviation is dispersed in multiple longitudinal ribs and the deviation type is diffuse deviation.

[0013] Furthermore, the deviation adjustment module obtains the time evolution characteristics of the deviation based on the cumulative effect coefficient of twist deviation to determine the deviation trend, and performs targeted adjustments in combination with the deviation type; The deviation adjustment module obtains the first-order difference of several twist deviation cumulative effect coefficients to determine the positive difference ratio. If the positive difference ratio is greater than or equal to the first ratio threshold, the deviation adjustment module determines that the twist deviation cumulative effect coefficient continues to increase and the deviation trend worsens. If the positive differential ratio is less than or equal to the second ratio threshold, the deviation adjustment module determines that the cumulative effect coefficient of twist deviation continues to decrease, and the deviation trend improves.

[0014] Furthermore, when the deviation type is localized and the deviation trend worsens, the deviation adjustment module identifies the single longitudinal rib with the largest deviation contribution rate and adjusts the winding speed according to the ratio of the designed twist to the actual twist corresponding to the longitudinal rib. When the deviation type is local deviation and the deviation trend worsens, the deviation adjustment module determines that the twist deviation spreads and the design benchmark needs to be adjusted. It obtains the instantaneous deviation of several longitudinal ribs as the twist deviation ratio to adjust the design twist.

[0015] Furthermore, if the average value of the twist deviation ratio is greater than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too large and increases the design twist. If the average value of the twist deviation ratio is less than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too small and reduces the design twist.

[0016] Furthermore, the negative feedback module obtains the adjustment effect coefficient corresponding to the adjustment winding speed and the adjustment effect coefficient corresponding to the adjustment design twist to calculate the adjustment efficiency index; If the adjustment efficiency index is greater than or equal to the first index threshold and less than or equal to the second index threshold, the negative feedback module determines that the adjustment effect is ideal and maintains the current adjustment range. If the adjustment efficiency index is less than the first index threshold, the negative feedback module determines that the adjustment effect is not ideal and that the adjustment intensity needs to be increased. Based on the ratio of the adjustment efficiency index to the first index threshold, the adjustment range of the winding speed and the design twist is increased.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows. The present invention realizes the accurate identification and adaptive adjustment of twist deviation in the production process of fiber-reinforced composite material rib meshes through progressive intelligent control; the weaving state module monitors the offset of the intersection points and the twist non-uniformity coefficient in real time, and quickly locates weaving abnormalities; the twist adjustment module accurately identifies the source of deviation, and pertinently adjusts the rotation speed or the designed twist of single or multiple longitudinal ribs, avoiding blind adjustment; the deviation degree module quantifies the deviation impact through the cumulative effect coefficient, and performs intelligent hierarchical processing. For serious impacts, it automatically adjusts the cutting frequency to ensure product quality, and for medium impacts, it deeply analyzes the deviation type and trend; the deviation adjustment module implements differential adjustment in combination with spatio-temporal evolution characteristics to prevent deviation diffusion; the negative feedback module dynamically optimizes the adjustment amplitude through the adjustment effect coefficient, forming a self-learning optimization closed loop; the present invention greatly improves the accuracy and response speed of twist control, effectively reduces the rejection rate, reduces manual intervention, ensures the consistency of the mesh size of the mesh, and significantly improves production efficiency and product reliability.

[0018] Furthermore, the system innovatively highly integrates the multi-head rib equipment for mesh production with the mesh equipment, and enables the联动 control of multi-head rib production and mesh production to achieve online production control of the mesh; the equipment integration degree and automation degree are high, and one person can operate it; it occupies a small space, greatly reducing labor costs and the floor area of the workshop; through control, the mesh equipment is linked with the multi-head rib equipment to achieve online synchronous production; the equipment automation degree is high, and the main actions adopt a servo system with high control accuracy; the transverse rib feeding action is fast, the停顿 time is short, and the equipment production efficiency is high.

[0019] Furthermore, the weaving state module accurately discriminates the weaving state by double perception of vision and encoder, and monitors the offset of the intersection points and the twist non-uniformity coefficient in real time. When the twist is non-uniform, the twist adjustment module quickly locates the source of non-uniformity based on the deviation contribution rate, makes a fine adjustment of the rotation speed for the fixed deviation of a single longitudinal rib, and corrects the designed twist through the average deviation direction for the systematic deviation of multiple longitudinal ribs, achieving differential and accurate control, and avoiding the blindness of traditional unified adjustment; this hierarchical control strategy significantly improves the twist uniformity and the consistency of the mesh size, effectively reduces the rejection rate, while reducing manual intervention and improving the production automation level and efficiency.

[0020] It should be noted that there is an unclear word "停顿" in the original text of item [3]. I have translated it as "停顿 time" first, but it may need to be further clarified according to the actual situation.Furthermore, the deviation level module constructs a cumulative effect coefficient for twist deviation, comprehensively considering the deviation amplitude, affected area, and duration to accurately quantify the overall impact of uneven twist on the quality of the mesh. Based on the coefficient threshold, it intelligently classifies the impact level into three levels: the first level of impact is normal fluctuation and requires no intervention; the third level of impact automatically triggers the cutting frequency adjustment to accurately remove defective meshes and ensure zero defects in the finished product; at the second level of impact, the deviation adjustment module identifies local or diffuse deviations through the coefficient of variation, judges the deterioration trend by combining the temporal evolution characteristics of the cumulative effect coefficient, implements speed fine-tuning for locally deteriorated longitudinal ribs, and corrects the twist benchmark for diffuse deviations, achieving preventive intervention before the deviation spreads. This invention significantly improves the intelligence level of twist control through multi-dimensional quantitative evaluation and graded progressive control, effectively preventing quality defects, reducing scrap rate, reducing unnecessary adjustments, and improving production efficiency and product reliability.

[0021] Furthermore, the negative feedback module calculates the adjustment effect coefficient by tracking the cumulative effect coefficient changes before and after adjustment in real time, and generates an adjustment efficiency index by combining the effects of winding speed adjustment and designed twist adjustment, dynamically evaluating the effectiveness of each adjustment; when the efficiency index is lower than the threshold, the system automatically increases the adjustment amplitude to ensure rapid convergence of deviation; when the efficiency index is ideal, the current parameters are maintained to operate stably; this self-optimization mechanism enables the control parameters to adaptively adjust with the production state, avoiding under-adjustment or over-adjustment caused by fixed amplitude adjustment, continuously improving the accuracy and response speed of twist control, forming an intelligent control closed loop that becomes more accurate with use, and further improving product consistency and production stability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the weaving component in an embodiment of the present invention; Figure 2 This is a schematic diagram of the main structure of the mesh weaving machine in an embodiment of the present invention; Figure 3 This is a side view of the mesh weaving machine in an embodiment of the present invention; Figure 4 This is a top view of the mesh weaving machine in an embodiment of the present invention; In the diagram: 1-Feeding assembly, 2-Reinforcing rib replacement assembly, 3-Cutting assembly, 4-Winding assembly, 5-Pulling assembly, 6-Fixed length detection assembly, 7-Horizontal rib. Detailed Implementation

[0023] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0024] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0025] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0026] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Please see Figures 1-4 As shown, Figure 1 This is a schematic diagram of the main structure of the weaving component in an embodiment of the present invention; Figure 2 This is a schematic diagram of the main structure of the mesh weaving machine in an embodiment of the present invention; Figure 3 This is a side view of the mesh weaving machine in an embodiment of the present invention; Figure 4 This is a top view of the mesh weaving machine in an embodiment of the present invention.

[0028] This invention provides a fiber-reinforced composite mesh production system, comprising: A mesh weaving machine is used for inserting and weaving horizontal and vertical ribs, and twisting and shaping the vertical ribs, while the horizontal and vertical ribs are interwoven into a mesh structure. A weaving status module, which is connected to the mesh weaving machine, is used to determine the mesh weaving status based on the twist unevenness coefficient obtained by the interlacing point offset. The twist adjustment module is used to respond to the mesh weaving state and obtain the deviation contribution rate of each longitudinal rib based on the twist deviation value of each longitudinal rib, so as to locate the source of uneven twist as a single longitudinal rib or multiple longitudinal ribs, and adjust the winding speed of the longitudinal rib twisting or adjust the design twist based on the average deviation direction of the longitudinal rib. The deviation degree module, which is connected to the twist adjustment module, is used to obtain the cumulative effect coefficient of twist deviation based on the adjusted design twist and the instantaneous deviation of the current grid of each longitudinal rib, so as to determine the degree of influence of the twist deviation of the mesh, adjust the cutting frequency or determine the type of twist deviation of the mesh. The deviation adjustment module is used to determine the type of twist deviation of the mesh based on several instantaneous deviations in response to the degree of influence, and to adjust the winding speed or design twist in combination with the twist deviation trend. The twist deviation trend is determined based on the cumulative effect coefficient of twist deviation of several meshes. The negative feedback module is used to obtain the adjustment effect coefficients corresponding to the adjustment of winding speed and design twist based on the cumulative effect coefficients of the current grid and subsequent grids, calculate the adjustment efficiency index, and determine the adjustment range of winding speed or design twist if the adjustment effect is not ideal.

[0029] Specifically, this invention achieves precise identification and adaptive adjustment of twist deviation during the production of fiber-reinforced composite mesh through progressive intelligent control; the weaving status module monitors the interlacing point offset and twist unevenness coefficient in real time through image recognition and encoders, quickly locating weaving anomalies; the twist adjustment module accurately identifies the source of deviation and adjusts the rotation speed or design twist of single or multiple longitudinal ribs accordingly, avoiding blind adjustments; the deviation degree module quantifies the impact of deviation through a cumulative effect coefficient, intelligently classifies and processes it, automatically adjusts the cutting frequency to ensure product quality for severe impacts, and deeply analyzes the type and trend of deviations for moderate impacts; the deviation adjustment module implements differentiated adjustment based on spatiotemporal evolution characteristics to prevent the spread of deviations; the negative feedback module dynamically optimizes the adjustment range through the adjustment effect coefficient, forming a self-learning optimization closed loop; this invention significantly improves the accuracy and response speed of twist control, effectively reduces the scrap rate, reduces manual intervention, ensures the consistency of mesh size, and significantly improves production efficiency and product reliability.

[0030] When conventional wire mesh production equipment is used, the horizontal ribs need to be produced in advance using special equipment and then wound up by a winding machine. When producing the wire mesh, they are then unwound and fed into the longitudinal ribs. In this embodiment, the fiber-reinforced composite mesh is made of transverse ribs 7 and longitudinal ribs interwoven. Its forming principle is the same as that of weaving. The longitudinal rib fiber yarn is divided into two strands by the weaving component. After the transverse rib is formed, it is fed through the middle of the two strands of fiber yarn divided by the longitudinal rib using the feeding mechanism. The longitudinal rib is rotated by the winding component, and the two strands of fiber yarn of the longitudinal rib are twisted and interwoven into a strong mesh structure. After the transverse ribs are formed, they become multi-headed transverse ribs. The multi-headed transverse ribs are fed through the two strands of fiber yarn that are divided by the longitudinal ribs by the feeding component. The cutting component cuts the transverse ribs after the fixed length detection component detects that any one of the multi-headed transverse ribs has been fed into place and the material feeding component feeds the material. The multi-headed transverse ribs are switched by the rib changing component. In the implementation, the multi-headed transverse ribs are three-headed transverse ribs. The material feeding component is used to push the transverse ribs close to the intersection of the two strands of fiber yarn of the longitudinal rib after the transverse ribs have been fed into place.

[0031] Specifically, the weaving assembly includes a frame, a winding assembly 4, a feeding assembly 1, a guiding assembly, a cutting assembly 3, a fixed-length detection assembly 6, a material shifting assembly 5, and a rib-changing assembly 2; among which, the winding assembly includes a winding head for twisting and twining two strands of fiber yarns of the longitudinal rib into a formed shape. The fixed-length detection assembly includes a detection switch and a baffle. The detection switch and the baffle are installed opposite to the feeding assembly. The detection switch detects the fixed length of the transverse rib to ensure that the transverse rib is fed in place, and the baffle limits the transverse rib to ensure accurate positioning of the transverse rib feeding. The fixed-length detection assembly is used for positioning the length of the transverse rib during the feeding of the transverse rib. The rib-changing assembly performs the functions of sequentially circulating feeding, cutting, and rib-changing of the transverse rib through the expansion and contraction and control of a rib-changing cylinder; the material shifting assembly realizes the material shifting function by the expansion and contraction of a cylinder.

[0032] In this embodiment, during the production of the mesh, the transverse ribs produced by the multi-head rib equipment need to be inserted into the two strands of fiber yarns of the longitudinal rib according to the grid size. Therefore, the mesh is produced in an online intermittent continuous manner. Every time the mesh travels a grid distance, the tractor stops, and the weaving assembly sequentially performs actions such as guiding closure, feeding pressing, positioning detection, cutting, guiding opening, material shifting, material shifting reset, feeding lifting, and rib-changing according to the action sequence; then the tractor and the weaving winding head are linked. The tractor pulls a grid distance, and the winding head rotates and twists the corresponding twist according to the grid size. After the rotation and twisting are completed, the winding head rotates in the opposite direction for the same number of turns during the next rotation and twisting, and so on in a cycle.

[0033] Specifically, this system innovatively highly integrates the multi-head rib equipment for mesh production with the mesh equipment, and enables the联动控制 of multi-head rib production and mesh production to实现网片在线生产控制; the equipment has a high integration degree and automation degree, and can be operated by one person; it occupies a small space, greatly reducing the labor cost and the floor area of the workshop; through control, the mesh equipment and the multi-head rib equipment are linked to实现在线同步生产; the equipment has a high automation degree, and the main actions adopt a servo system with high control precision; the transverse rib feeding action is fast, the停顿时间 is short, and the equipment production efficiency is high.

[0034] The weaving state module obtains the image of the weaving area of the weaving component through the set visual sensor,识别网片若干网格的横筋与纵筋的交织点,获取若干交织点的平面坐标(X, Y),并获取若干交织点对应的理论设计坐标( , ),确定交织点偏移量; 交织点偏移量 ; The weaving state module obtains the twisting angle of several longitudinal ribs within the current grid through an encoder, and records the corresponding number of twisting turns, that is, the actual twist, to确定捻度不均匀系数; Twist unevenness coefficient = maximum value of the difference between each actual twist and the average twist / average twist × 100%, where the average twist is the average of several actual twists.

[0035] If the offset of the interlacing point is greater than the offset threshold, the weaving status module determines that the weaving status of the mesh is that the interlacing point is unstable and issues an alarm signal. If the offset of the interlacing point is less than or equal to the offset threshold, the weaving status module obtains the twist unevenness coefficient to determine the weaving status of the mesh. If the twist unevenness coefficient is less than or equal to the coefficient threshold, the weaving status module determines that the mesh weaving status is normal; if the twist unevenness coefficient is greater than the coefficient threshold, the weaving status module determines that the mesh weaving status is uneven and obtains the deviation contribution rate of each longitudinal rib to locate the source of unevenness.

[0036] In practice, the selectable value range of the offset threshold is 0.5-3.0mm, the selectable value range of the coefficient threshold is 3%-8%, and the designed twist is 8 turns / grid; It is understandable that the mesh size of the mesh design is 100mm, and the industry standard allows a size deviation of ±1%. The mesh size deviation is linearly related to the offset of the interlacing point. The offset accounts for about 60%-80% of the size deviation. Therefore, when the offset exceeds 0.5mm, the mesh size deviation may be close to 1mm, which is close to the upper limit of the tolerance. The servo motor control accuracy of the winding head is ±0.1 turns / grid. When the designed twist is 8 turns / grid, the twist fluctuation range of a single longitudinal rib is approximately ±1.25%. When the non-uniformity coefficient exceeds 3%, the twist difference of at least two longitudinal ribs exceeds the control accuracy, requiring intervention.

[0037] The twist adjustment module determines the twist deviation value of each longitudinal rib based on the actual twist of each longitudinal rib. The twist deviation value is the difference between the actual twist and the average twist value. The deviation contribution rate of each longitudinal rib is determined based on the twist deviation value of each longitudinal rib. The deviation contribution rate of each longitudinal rib = absolute value of the corresponding twist deviation value / total absolute deviation sum × 100%, where the total absolute deviation sum is the sum of the absolute values ​​of the twist deviation values ​​of each longitudinal rib; The twist adjustment module obtains the maximum value of the deviation contribution rate of each longitudinal rib and records it as the maximum deviation contribution value. If the maximum deviation contribution value is greater than or equal to the contribution threshold, the twist adjustment module determines that more than half of the unevenness is contributed by a single longitudinal rib, and the unevenness is highly concentrated. If the maximum deviation contribution is less than the contribution threshold, the twist adjustment module determines that the uneven distribution is in multiple longitudinal ribs, and determines the average deviation direction of the longitudinal ribs to adjust the design twist. Specifically, the average deviation direction of the longitudinal ribs is the average of the sum of several twist deviation values. If the average deviation direction is greater than zero, the twist adjustment module determines that the twist of several longitudinal ribs is too large and reduces the designed twist by 0.5%. If the average deviation direction is less than zero, the twist adjustment module determines that the twist of several longitudinal ribs is too small and increases the designed twist by 0.5%.

[0038] Uneven height concentration indicates that there is a fixed deviation in the longitudinal ribs. The twist adjustment module adjusts the winding assembly to control the winding speed of the corresponding longitudinal ribs for twisting and twisting. In practice, the contribution threshold is 50%. If the corresponding twist deviation value is greater than zero, the twist adjustment module determines that the twist of the corresponding longitudinal rib is too large, and the winding assembly controls the winding speed of the corresponding longitudinal rib to decrease by 1%. If the corresponding twist deviation value is less than zero, the twist adjustment module determines that the twist of the corresponding longitudinal rib is too small, and the winding assembly controls the winding speed of the corresponding longitudinal rib to increase by 1%.

[0039] Specifically, the weaving status module uses both vision and encoder perception to monitor the interlacing point offset and twist unevenness coefficient in real time, accurately determining the weaving status. When the twist is uneven, the twist adjustment module quickly locates the source of unevenness based on the deviation contribution rate. For single longitudinal ribs with fixed deviations, the rotation speed is finely adjusted. For multiple longitudinal ribs with systematic deviations, the design twist is corrected by averaging the deviation direction, achieving differentiated and precise control and avoiding the blindness of traditional uniform adjustment. This hierarchical control strategy significantly improves twist uniformity and grid size consistency, effectively reducing the scrap rate, while reducing manual intervention and improving the level of production automation and efficiency.

[0040] The twist is unevenly distributed among multiple longitudinal ribs. The deviation module obtains the adjusted design twist and the actual twist of each longitudinal rib in the current grid, calculates the instantaneous deviation of each longitudinal rib, and determines the cumulative effect coefficient of twist deviation. The instantaneous deviation of each longitudinal rib = (actual twist - design twist) / design twist × 100%. An instantaneous deviation greater than zero indicates that the twist of the longitudinal rib is too large within the current grid. The cumulative effect coefficient of twist deviation = [(maximum instantaneous deviation - minimum instantaneous deviation) / preset normal twist fluctuation range] × [number of deviation longitudinal ribs / total number of longitudinal ribs] × [1 + log(1 + continuous deviation index)]; In the formula, the preset normal twist fluctuation range is 5%, the number of longitudinal ribs deviating from the longitudinal ribs is the number of longitudinal ribs whose instantaneous deviation is greater than the critical value, and the critical value in practice is 2%; Specifically, the continuous deviation index is calculated as the number of longitudinal ribs with the same positive or negative instantaneous deviation value within the last 5 grids / the total number of longitudinal ribs. The cumulative effect coefficient represents the comprehensive impact of the current twist deviation on the overall quality of the mesh. The larger the cumulative effect coefficient, the more serious the deviation, the wider the range of influence, and the stronger the persistence.

[0041] If the cumulative effect coefficient is less than or equal to the first effect threshold, the deviation module determines that the twist deviation of the mesh is at the first level of influence, and the twist deviation is within the normal range. If the cumulative effect coefficient is greater than the first effect threshold and less than or equal to the second effect threshold, the deviation degree module determines that the twist deviation of the net is in the second degree of influence and determines the deviation type of the twist deviation of the net. If the cumulative effect coefficient is greater than the second effect threshold, the deviation degree module determines that the twist deviation of the mesh is at the third level of influence, indicating that the current mesh has quality defects, and adjusts the cutting frequency of the finished product cutting.

[0042] Wherein, the first effect threshold is 1.0 and the second effect threshold is 2.5.

[0043] Understandably, sampling and analyzing the cumulative effect coefficient under normal production conditions yields a mean of 0.6 and a standard deviation of 0.2. Taking the mean + 2σ = 1.0 as the first effect threshold can filter out more than 95% of normal fluctuations and avoid false triggering. When the cumulative effect coefficient is 2.5, the instantaneous deviation range is 10% (twice the normal fluctuation range), the deviation of the longitudinal reinforcement is 80%, and the continuous deviation index is equal to 1, meaning that half of the longitudinal reinforcements in the last 5 grids continuously deviate in the same direction. At this point, uneven twist has seriously affected the quality of the mesh.

[0044] Specifically, the deviation of the mesh twist is at the third level of influence. The deviation degree module determines the start and end positions of the mesh in the length direction of the mesh based on the current transverse rib feeding position. It obtains the finished unit where the start and end positions of the mesh are located. In practice, the cutting trigger condition is that the length of the traction machine reaches the unit length of the finished unit. When the cutting sequence of the previous finished unit of the finished unit where the mesh is located is triggered, the unit length of the cutting trigger condition is adjusted to half of the original value. When the cutting sequence of the finished unit where the mesh is located is triggered, the unit length of the cutting trigger condition is adjusted to the original value.

[0045] The deviation of the mesh twist is at the second level of influence. The deviation adjustment module calculates the coefficient of variation of the instantaneous deviation of each longitudinal rib. The coefficient of variation is the ratio of the absolute value of the standard deviation of several instantaneous deviations to the average value. If the coefficient of variation is greater than the variation threshold, the deviation adjustment module determines that the deviation is concentrated in a few longitudinal ribs and the deviation type is local deviation. If the coefficient of variation is less than or equal to the variation threshold, the deviation adjustment module determines that the deviation is dispersed in multiple longitudinal ribs and the deviation type is diffuse deviation.

[0046] The deviation adjustment module obtains the time evolution characteristics of the deviation based on the cumulative effect coefficient of twist deviation to determine the deviation trend, and performs targeted adjustments based on the deviation type; Specifically, the deviation adjustment module obtains the cumulative effect coefficient of twist deviation for several grids. In practice, it obtains the cumulative effect coefficient of twist deviation for nearly 10 grids and determines the first-order difference of the cumulative effect coefficient of twist deviation. The first-order difference is a number of differences between the cumulative effect coefficients of twist deviation for adjacent grids. Based on the number of differences, a positive difference ratio is determined. The positive difference ratio = the number of positive first-order differences / the number of first-order differences. In practice, the number of first-order differences is 9. If the positive difference ratio is greater than or equal to the first ratio threshold, the deviation adjustment module determines that the twist deviation cumulative effect coefficient continues to increase and the deviation trend worsens. If the positive difference ratio is less than or equal to the second ratio threshold, the deviation adjustment module determines that the cumulative effect coefficient of twist deviation continues to decrease and the deviation trend improves. If the positive differential ratio is less than the first proportional threshold and greater than the second proportional threshold, the deviation adjustment module determines that the twist deviation cumulative effect coefficient fluctuates and has no obvious trend.

[0047] Wherein, the variation threshold is 1.0, the first proportion threshold is 0.7, and the second proportion threshold is 0.3.

[0048] Understandably, the coefficient of variation is used to measure the degree of dispersion of instantaneous deviation among the longitudinal ribs. The variation threshold of 1.0 is the classic statistical dividing point that distinguishes between "concentration" and "dispersion". The positive difference ratio reflects the temporal evolution trend of the cumulative effect coefficient. The positive difference ratio ranges from [0,1]. Based on the random walk hypothesis, if the Φ value has no real trend and fluctuates purely randomly, the theoretical expectation of the positive difference ratio is 0.5, and the 95% confidence interval is approximately [0.3, 0.7].

[0049] When the deviation type is local deviation and the deviation trend worsens, the deviation adjustment module identifies the single longitudinal rib with the largest deviation contribution rate and adjusts the winding speed according to the ratio of the designed twist to the actual twist corresponding to the longitudinal rib. When the deviation type is local deviation and the deviation trend worsens, the deviation adjustment module determines that the twist deviation spreads and the design benchmark needs to be adjusted. It obtains the instantaneous deviation of several longitudinal ribs as the twist deviation ratio to adjust the design twist. Specifically, the twist deviation ratio = (actual twist corresponding to the longitudinal rib - design twist) / design twist × 100%, and the design twist is adjusted according to the average value of several twist deviation ratios; During implementation, if the average value of the twist deviation ratio is greater than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too large and increases the design twist by 1%; if the average value of the twist deviation ratio is less than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too small and decreases the design twist by 1%.

[0050] Specifically, the deviation level module constructs a cumulative effect coefficient for twist deviation, comprehensively considering the deviation amplitude, affected area, and duration to accurately quantify the overall impact of uneven twist on the quality of the mesh. Based on the coefficient threshold, it intelligently classifies the impact level into three levels: the first level of impact is normal fluctuation and requires no intervention; the third level of impact automatically triggers the cutting frequency adjustment to accurately remove defective meshes and ensure zero defects in the finished product; at the second level of impact, the deviation adjustment module identifies local or diffuse deviations through the coefficient of variation, judges the deterioration trend by combining the temporal evolution characteristics of the cumulative effect coefficient, implements speed fine-tuning for locally deteriorated longitudinal ribs, and corrects the twist benchmark for diffuse deviations, achieving preventive intervention before the deviation spreads. This invention significantly improves the intelligence level of twist control through multi-dimensional quantitative evaluation and graded progressive control, effectively preventing quality defects, reducing scrap rate, reducing unnecessary adjustments, and improving production efficiency and product reliability.

[0051] The negative feedback module obtains the cumulative effect coefficient of the current grid and the cumulative effect coefficient of the next grid to calculate the adjustment effect coefficient, wherein the adjustment effect coefficient = (cumulative effect coefficient of the current grid - cumulative effect coefficient of the next grid) / cumulative effect coefficient of the current grid; The negative feedback module obtains the adjustment effect coefficient corresponding to the adjustment winding speed and the adjustment effect coefficient corresponding to the adjustment design twist to calculate the adjustment efficiency index. The adjustment efficiency index is calculated as (adjustment effect coefficient corresponding to the adjustment winding speed + adjustment effect coefficient corresponding to the adjustment design twist) / 2. If the adjustment efficiency index is greater than or equal to the first index threshold and less than or equal to the second index threshold, the negative feedback module determines that the adjustment effect is ideal and maintains the current adjustment range. If the regulation efficiency index is less than the first index threshold, the negative feedback module judges that the regulation effect is not ideal and the regulation intensity needs to be increased. Specifically, the negative feedback module increases the adjustment range of the winding speed and the design twist based on the ratio of the adjustment efficiency index to the first index threshold. In practice, the adjustment range of the winding speed is the ratio of the design twist to the actual twist corresponding to the longitudinal rib, and the adjustment range of the design twist is 1%.

[0052] The threshold for the first indicator is 0.3, and the threshold for the second indicator is 0.7.

[0053] Understandably, the adjustment effect coefficient reflects the decrease in the cumulative effect coefficient after a single adjustment. The adjustment efficiency index is the arithmetic mean of the e-values ​​corresponding to the winding speed adjustment and the design twist adjustment. It is used to comprehensively evaluate the effectiveness of the overall adjustment strategy. An adjustment efficiency index greater than 0.7 indicates a significant adjustment effect, while an index less than 0.3 indicates a weak adjustment effect.

[0054] Specifically, the negative feedback module calculates the adjustment effect coefficient by tracking the cumulative effect coefficient changes before and after adjustment in real time, and generates an adjustment efficiency index by combining the effects of winding speed adjustment and designed twist adjustment, dynamically evaluating the effectiveness of each adjustment; when the efficiency index is lower than the threshold, the system automatically increases the adjustment amplitude to ensure rapid convergence of deviation; when the efficiency index is ideal, the current parameters are maintained in stable operation; this self-optimization mechanism enables the control parameters to adaptively adjust with the production status, avoiding under-adjustment or over-adjustment caused by fixed amplitude adjustment, continuously improving the accuracy and response speed of twist control, forming an intelligent control closed loop that becomes more accurate with use, and further improving product consistency and production stability.

[0055] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fiber-reinforced composite material mesh production system, characterized in that, include: A mesh weaving machine is used for inserting and weaving horizontal and vertical ribs, and twisting and shaping the vertical ribs to weave a mesh structure in which the horizontal and vertical ribs are interwoven. The weaving status module, which is connected to the mesh weaving machine, is used to obtain the offset of the interlacing point of the horizontal and vertical ribs, and to determine the twist unevenness coefficient based on the interlacing point offset to determine the mesh weaving status. The twist adjustment module is used to respond to the mesh weaving state, obtain the deviation contribution rate of each longitudinal rib based on the twist deviation value of each longitudinal rib to locate the twist unevenness, adjust the winding speed of the longitudinal rib twisting or adjust the design twist based on the average deviation direction of the longitudinal rib, and locate the twist unevenness including a single longitudinal rib or multiple longitudinal ribs. The deviation degree module, which is connected to the twist adjustment module, is used to obtain the cumulative effect coefficient of twist deviation to determine the degree of influence of the twist deviation of the mesh, so as to adjust the cutting frequency or determine the type of twist deviation of the mesh based on the degree of influence. The cumulative effect coefficient is determined based on the adjusted design twist and the instantaneous deviation of the current mesh of each longitudinal rib. The deviation adjustment module determines the type of twist deviation of the mesh based on several instantaneous deviations, and adjusts the winding speed or design twist in combination with the twist deviation trend. The twist deviation trend is determined based on the cumulative effect coefficient of twist deviation of several meshes. The negative feedback module is used to obtain the adjustment effect coefficients corresponding to the adjustment of winding speed and design twist based on the cumulative effect coefficients of the current grid and subsequent grids, calculate the adjustment efficiency index, and adjust the adjustment range of winding speed or design twist based on the judgment result that the adjustment effect is not ideal.

2. The fiber-reinforced composite mesh production system according to claim 1, characterized in that, The mesh weaving machine divides the longitudinal fiber yarn into two strands through the weaving component, and the transverse fiber yarn passes through the two strands of longitudinal fiber yarn using the feeding mechanism. The longitudinal fiber yarn is twisted and twisted by the winding component. The weaving status module obtains the planar coordinates of several interlacing points to determine the offset of the interlacing points. If the offset of the interlacing points is greater than the offset threshold, the weaving status module determines that the weaving status of the mesh is that the interlacing points are unstable and issues an alarm signal. If the offset of the interlacing point is less than or equal to the offset threshold, the weaving status module obtains the twist unevenness coefficient to determine the weaving status of the mesh.

3. The fiber-reinforced composite mesh production system according to claim 2, characterized in that, The weaving status module obtains the actual twist of several longitudinal ribs within the current grid and determines the twist unevenness coefficient. If the twist unevenness coefficient is less than or equal to the coefficient threshold, the weaving status module determines that the mesh weaving status is normal. If the twist unevenness coefficient is greater than the coefficient threshold, the weaving status module determines that the mesh weaving status is uneven twist and obtains the deviation contribution rate of each longitudinal rib to locate the source of unevenness.

4. The fiber-reinforced composite mesh production system according to claim 3, characterized in that, The twist adjustment module obtains the twist deviation value of each longitudinal rib based on the actual twist of each longitudinal rib, and determines the deviation contribution rate of each longitudinal rib. If the maximum deviation contribution is greater than or equal to the contribution threshold, the twist adjustment module determines that more than half of the unevenness is contributed by a single longitudinal rib, and the unevenness is highly concentrated. The winding assembly is then adjusted to control the winding speed of the corresponding longitudinal rib to twist. If the maximum deviation contribution is less than the contribution threshold, the twist adjustment module determines that the uneven distribution is on multiple longitudinal ribs and adjusts the design twist by determining the average deviation direction of the longitudinal ribs.

5. The fiber-reinforced composite mesh production system according to claim 4, characterized in that, The twist is unevenly distributed among multiple longitudinal ribs. The deviation module obtains the adjusted design twist and the actual twist of each longitudinal rib in the current grid, calculates the instantaneous deviation of each longitudinal rib, and determines the cumulative effect coefficient of twist deviation. If the cumulative effect coefficient is less than or equal to the first effect threshold, the deviation degree module determines that the twist deviation of the mesh is at the first level of influence, and the twist deviation is within the normal range; If the cumulative effect coefficient is greater than the first effect threshold and less than or equal to the second effect threshold, the deviation degree module determines that the twist deviation of the net is in the second degree of influence and determines the deviation type of the twist deviation of the net. If the cumulative effect coefficient is greater than the second effect threshold, the deviation degree module determines that the twist deviation of the mesh is at the third level of influence, indicating that the current mesh has quality defects, and adjusts the cutting frequency of the finished product cutting.

6. The fiber-reinforced composite mesh production system according to claim 5, characterized in that, The deviation of the mesh twist is the second most influential factor. The deviation adjustment module calculates the coefficient of variation of the instantaneous deviation of each longitudinal rib. If the coefficient of variation is greater than the variation threshold, the deviation adjustment module determines that the deviation is concentrated in a few longitudinal ribs and the deviation type is local deviation. If the coefficient of variation is less than or equal to the variation threshold, the deviation adjustment module determines that the deviation is dispersed in multiple longitudinal ribs and the deviation type is diffuse deviation.

7. The fiber-reinforced composite mesh production system according to claim 6, characterized in that, The deviation adjustment module obtains the time evolution characteristics of the deviation based on the cumulative effect coefficient of twist deviation to determine the deviation trend, and performs targeted adjustments based on the deviation type; The deviation adjustment module obtains the first-order difference of several twist deviation cumulative effect coefficients to determine the positive difference ratio. If the positive difference ratio is greater than or equal to the first ratio threshold, the deviation adjustment module determines that the twist deviation cumulative effect coefficient continues to increase and the deviation trend worsens. If the positive differential ratio is less than or equal to the second ratio threshold, the deviation adjustment module determines that the cumulative effect coefficient of twist deviation continues to decrease and the deviation trend improves.

8. The fiber-reinforced composite mesh production system according to claim 7, characterized in that, The deviation adjustment module determines the single longitudinal rib with the largest deviation contribution rate based on the judgment result that the deviation type is local deviation and the deviation trend is worsening, and adjusts the winding speed according to the ratio of the designed twist to the actual twist corresponding to the longitudinal rib. Based on the judgment that the deviation type is local deviation and the deviation trend is worsening, the deviation adjustment module determines that the twist deviation spreads and the design benchmark needs to be adjusted. It obtains the instantaneous deviation of several longitudinal ribs as the twist deviation ratio to adjust the design twist.

9. The fiber-reinforced composite mesh production system according to claim 8, characterized in that, If the average twist deviation ratio is greater than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too large and increases the design twist. If the average twist deviation ratio is less than zero, the deviation adjustment module determines that the twist deviation of several longitudinal ribs is too small and reduces the design twist.

10. The fiber-reinforced composite mesh production system according to claim 9, characterized in that, The negative feedback module obtains the adjustment effect coefficient corresponding to the adjustment winding speed and the adjustment effect coefficient corresponding to the adjustment design twist, and calculates the adjustment efficiency index. If the adjustment efficiency index is greater than or equal to the first index threshold and less than or equal to the second index threshold, the negative feedback module determines that the adjustment effect is ideal and maintains the current adjustment range. If the adjustment efficiency index is less than the first index threshold, the negative feedback module determines that the adjustment effect is not ideal and that the adjustment intensity needs to be increased. Based on the ratio of the adjustment efficiency index to the first index threshold, the adjustment range of the winding speed and the design twist is increased.

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