Ultra-wide coated fabric processing transmission mechanism and control method thereof

Abstract

This invention proposes a conveyor mechanism for processing ultra-wide coated fabrics and its control method. The conveyor mechanism comprises a roller assembly consisting of multiple rollers. Along the conveying direction, the conveyor mechanism is divided into a feed stage, a first-stage lifting stage, an intermediate relaxation stage, an intermediate and later-stage under-relaxation stage, and a final-stage stress release stage. The roller heights in each stage vary according to a piecewise function curve, including a rapid rise, a horizontal stage, a gentle rise, and a slow descent. The roller assembly parameters are configured as follows: during the feed stage, the first-stage roller is aligned with the upstream material feed direction; the final-stage roller has the same diameter as the first-stage roller; the first-stage and secondary rollers are actively driven, with the secondary roller rotating at 0.9 times the speed of the first-stage roller. The intermediate-stage rollers are alternately driven with active and passive drives. The control method includes staged stress control, dynamic parameter adaptation, and forced convection heat transfer control. This conveyor mechanism and its control method can effectively improve coating processing quality, enhance adaptability, optimize temperature control, and increase production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of textile material preparation and processing, in particular to a processing and transmission mechanism for ultra-wide coated fabrics and a control method thereof. Background Art

[0002] During the processing of ultra-wide coated fabrics, the design of the fabric conveyor mechanism is a key factor affecting coating quality. Traditional coated fabric conveyor mechanisms typically utilize a simple roller assembly layout, which presents numerous problems and shortcomings. The relatively simple layout and parameter settings of traditional roller assemblies make it difficult to precisely control the stress state of the fabric during different conveyor stages. This results in uneven stress distribution during the coating process, which can easily lead to uneven ductility, wrinkling, and stretching deformation, seriously impacting coating quality. Due to their greater width, ultra-wide fabrics are more susceptible to stress concentration and uneven distribution during conveyor, making traditional conveyor mechanisms difficult to adapt to their specific requirements. Furthermore, traditional conveyor mechanisms lack effective adjustment strategies for fabrics with varying physical properties, making it impossible to optimize them based on their ductility, flexibility, and other characteristics, resulting in suboptimal coating results. Finally, traditional conveyor mechanisms also lack effective stress relief and temperature control for the fabric. They cannot effectively regulate the temperature of the fabric in its relaxed state, impacting both the physical properties of the fabric and the coating process.

[0003] Therefore, a new spatial configuration of the transmission mechanism in the processing of ultra-wide coated fabrics and a fabric stress state control strategy are urgently needed as an ultra-wide coated fabric processing transmission mechanism and a control method thereof to solve the problems existing in the existing technology. Summary of the Invention

[0004] An embodiment of the present invention provides an ultra-wide coated fabric processing and transmission mechanism and a control method thereof. The conventional transmission mechanism in current technology cannot meet the requirements of uniform stress distribution and coordinated temperature optimization in the processing of ultra-wide coated fabrics due to its single roller layout, unadjustable parameters and lack of temperature control, resulting in unstable coating quality and other problems.

[0005] The core technology of this invention is mainly achieved through the staged roller space configuration design (stretching → relaxation → under-relaxation → release), segmented mathematical model control of the stress curve, coordinated regulation of the mid- and rear-stage forced convection heat exchange devices, and dynamic parameter adjustment strategy based on fabric characteristics, to achieve uniform stress release of ultra-wide coated fabrics and significantly improve the coating quality.

[0006] In a first aspect, the present invention provides an ultra-wide coated fabric processing and transmission mechanism, comprising:

[0007] The roller group consists of multiple rollers. The roller group is divided into the feeding stage, the first stage lifting stage, the middle stage relaxation stage, the middle and rear stage under-relaxation stage and the final stage stress release stage along the transmission direction. The roller height in each stage changes according to a piecewise function curve, including a rapid rise section, a horizontal section, a gentle rise section and a slow fall section.

[0008] The parameter configuration of the roller group is:

[0009] The first roller in the feeding stage is aligned with the upstream material direction;

[0010] The diameter of the final roller is the same as that of the first roller;

[0011] The primary roller and the secondary roller are actively driven, the secondary roller's speed is 0.9 times that of the primary roller, and the intermediate rollers are alternately actively driven and passively driven.

[0012] Furthermore, the diameter of the roller group is also configured as follows: the diameter of the first-stage roller is 30-40 cm, the diameter of the secondary roller is 1.1 times that of the first-stage roller, and the diameter of the intermediate-stage roller is 20-30 cm.

[0013] Furthermore, the roller height at each stage changes according to a piecewise function curve, including:

[0014] The rapid rising section corresponding to the first-level lifting stage is expressed as y(x)=ax, a>0;

[0015] The horizontal segment corresponding to the intermediate relaxation stage is expressed as y(x)=b;

[0016] The gently rising section corresponding to the under-relaxation stage in the middle and later stages is expressed as y(x)=c+dx, d>0;

[0017] The slow decline section corresponding to the final stress release stage is expressed as y(x)=e−fx, f>0;

[0018] Among them, x and y represent the horizontal and vertical coordinates, a represents the first slope, b represents the first roller height in the intermediate relaxation stage, c represents the first roller height in the middle and late under-relaxation stage, d represents the second slope, e represents the first roller height in the final stress release stage, and f represents the third slope.

[0019] Furthermore, the plane length of the roller group is 1.1-1.2 times the width of the fabric, and the overall transmission rate is 0.3-0.5m / s.

[0020] Furthermore, the roller group consists of 6-12 rollers.

[0021] In a second aspect, the present invention provides a control method for an ultra-wide coated fabric processing and transmission mechanism, comprising the following steps:

[0022] S00. Stage-by-stage stress control:

[0023] The rollers in the feeding stage are horizontally flush with the upstream incoming material direction, and the initial stress is σ0.

[0024] The first-stage lifting stage (0 ≤ x < x1): The stress σ(x) = σ0 + k1x;

[0025] The intermediate relaxation stage (x1 ≤ x < x2): The stress σ(x) = σ1 - k2x;

[0026] The middle and later under-relaxation stage (x2 ≤ x < x3): The stress σ(x) = C;

[0027] The final-stage stress release stage (x3 ≤ x < x4): The stress σ(x) = σ3 - k3x

[0028] Among them, k1 is the stress increase rate of the initial stretching in the first-stage lifting stage; σ0 is the stress value at the end of the initial stretching, and the range is 20 - 30N; σ1 is the stress value in the intermediate relaxation stage; σ3 is the stress value in the final-stage stress release stage; k2 is the stress decrease rate in the intermediate relaxation stage; k3 is the stress decrease rate in the final-stage stress release stage; C is a constant.

[0029] S10. Dynamic parameter adaptation:

[0030] Adjust the transmission parameters according to the fabric ductility. For fabrics with ductility less than the preset threshold, reduce the height of the first-stage rollers or the transmission rate; for fabrics with ductility greater than or equal to the preset threshold, increase the height of the first-stage rollers or the transmission rate.

[0031] S20. Forced convection heat transfer control:

[0032] Arrange forced convection heat transfer devices at different roller stages;

[0033] Perform heat transfer with the first amplitude in the first-stage lifting stage and the intermediate relaxation stage to avoid fabric tearing during the tensile strain process;

[0034] Perform heat transfer with the second amplitude in the middle and later under-relaxation stage, where the second amplitude is greater than the first amplitude.

[0035] The main contributions and innovations of the present invention are as follows:

[0036] 1. Precise control of the fabric stress state: By optimizing the spatial configuration and transmission parameters of the roller group, ensure that the stress state of the fabric in different transmission stages can be precisely controlled, thereby improving the coating processing quality.

[0037] 2. Improve the uniformity of fabric transmission: By reasonably arranging the diameters, spatial positions and motion states of the roller group, make the fabric受力均匀 during transmission, and avoid coating processing defects caused by uneven stress.

[0038] 3. Enhanced adaptability: According to the physical properties of different fabrics (such as ductility), the parameters of the roller group are adjusted to adapt to different types of fabrics, thereby improving the versatility and flexibility of the transmission mechanism.

[0039] 4. Optimize temperature control: Arrange forced convection heat exchange devices at different roller stages to ensure that the fabric obtains the required temperature parameters in a relaxed state, avoiding coating processing quality problems caused by temperature problems.

[0040] 5. Improve production efficiency: By optimizing the transmission speed and the driving mode of the roller group, the stress is released evenly in stages while improving production efficiency.

[0041] The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0043] Figure 1 2. It is a schematic diagram of a roller assembly of an ultra-wide coated fabric processing and transmission mechanism according to an embodiment of the present invention;

[0044] Figure 2 This is a flow chart of a control method for an ultra-wide coated fabric processing and transmission mechanism according to an embodiment of the present invention;

[0045] Figure 3 is a stress curve diagram according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments are not intended to represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of one or more embodiments of this specification, as detailed in the appended claims.

[0047] It should be noted that in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than those described in this specification. In addition, a single step described in this specification may be broken down into multiple steps for description in other embodiments, and multiple steps described in this specification may be combined into a single step for description in other embodiments.

[0048] Traditional coated fabric transmission mechanisms have difficulty in accurately controlling the stress state of the fabric at different transmission stages, resulting in coating processing quality defects.

[0049] Based on this, the present invention solves the problems existing in the prior art based on the spatial configuration of multi-roller coordination and the fabric stress state control strategy.

[0050] Example 1

[0051] The present invention aims to propose a control method for the processing of ultra-wide coated fabrics. By optimizing the spatial configuration and transmission parameters of the roller group, the stress release of the fabric is controlled in stages, and forced convection heat exchange devices are arranged at different roller stages. This can achieve precise control of the stress state of the fabric during the processing of ultra-wide coated fabrics, thereby improving the coating quality and production efficiency.

[0052] Specifically, the embodiment of the present invention provides an ultra-wide coated fabric processing and transmission mechanism, specifically, referring to Figure 1 ,include:

[0053] 1. Multi-roller group spatial configuration

[0054] Roller group composition: It consists of 6-12 rollers, arranged in the same vertical axis plane, and is divided into five stages along the transmission direction:

[0055] Feeding stage (corresponding to the roller stage numbered 1 to 2 in the attached figure): the fabric enters the transmission mechanism from the feed roller (from a planar position, the feed roller is aligned with the horizontal position of the upstream material direction). At this time, the height of the roller is aligned with the horizontal position of the upstream material direction (y(0)=0). The diameter of the roller is 30-40 cm, the transmission rate is 0.3-0.5 m / s, and it is actively driven by a motor.

[0056] During the initial ascent (corresponding to roller stages 2 to 4 in the accompanying diagram): The initial roller (number 2) rises abruptly by 2-3 meters, creating a rapid ascent (y(x) = ax, where a is a large positive number representing the slope of the rapid ascent, such as a = 0.8-2). This rapid ascent of the rollers by 2-3 meters exerts tension on the fabric. In practice, the initial tensile stress is controlled by adjusting the roller motor speed and the height of the rollers, ensuring uniform stress on the fabric during transport.

[0057] During the intermediate relaxation phase (corresponding to roller stages 4 to 7 in the accompanying figure): Rollers 4-7 are spaced horizontally at a distance of 1.5-2 times the fabric width (the spacing is adjusted based on the fabric width and physical properties), allowing the fabric to fully relax. This phase can be described as a gentle curve. The height is maintained at b = 2-3 meters (the horizontal segment y(x) = b, where b is a constant representing the roller height). The rollers have a diameter of 20-30 cm, alternating between active and passive drive. In practice, the fabric stress state is measured, and the roller spacing and diameter are combined to adjust the roller layout and parameters to achieve full fabric relaxation during this phase.

[0058] During the mid-to-late under-relaxation stage (moderate under-relaxation, corresponding to rollers 7 and 8 in the figure): Rollers 7 are symmetrically arranged on either side of the conveyor's centerline, forming a gently ascending section (the horizontal section y(x) = c + dx, where c is a constant representing the roller's height and d is a small positive number representing the slope of the gently ascending section, e.g., c = 2.5-3.5 meters and d = 0.1-0.2). This provides moderate under-relaxation of the fabric. The rollers are 20-30 cm in diameter and are actively driven.

[0059] Final stress release stage (corresponding to rollers 8 and 9 in the accompanying figure): The final roller (numbered 9) slowly descends (y(x) = e − fx, e = 3.0-3.5 meters, f = 0.1-0.15) to fully release stress. Its diameter is the same as the first roller (30-40 cm) and it is actively driven. The transmission rate is 0.3-0.5 m / s. In practice, the height and speed of the final roller are adjusted to ensure that the fabric is relaxed after coating, thus avoiding quality issues caused by residual stress.

[0060] Layout: The roller length of the roller assembly is 1.1-1.2 times the fabric width, with an overall transmission rate of 0.3-0.5 m / s. The diameter of the secondary roller (number 4) is 1.1 times that of the primary roller. Both are actively driven by motors, and the secondary roller rotates at 0.9 times the speed of the primary roller. The intermediate roller assembly (corresponding to the intermediate relaxation stage) is arranged with alternating active and passive drives, with a diameter of 20-30 cm. The final roller (corresponding to the final stress release stage) is enlarged to the diameter of the primary roller. This design ensures that the fabric transmission maintains a balance between uniform and staged stress release and production efficiency.

[0061] In summary, the typical curve equation of the roller group spatial configuration can be described as a piecewise function:

[0062]

[0063] Where x1, x2, x3, and x4 are the horizontal coordinates of the dividing points at different stages, indicating the position of the fabric in the transmission direction. a, b, c, d, e, and f are coefficients determined based on the specific parameters of the roller assembly and the physical properties of the fabric.

[0064] Based on the above, the stress curve of the fabric can be expressed as a piecewise function. Assume that the stress is represented by σ(x), where x is the position of the fabric in the transmission direction, such as Figure 3 As shown, the stress curve can be expressed as:

[0065]

[0066] Where σ0 is the initial stress, typically zero or a very small value, ranging from 20 to 30 N; k1 is the stress increase rate during the initial stretching stage; σ1 is the stress value during the intermediate relaxation stage; k2 is the stress decrease rate during the intermediate relaxation stage; k3 is the stress decrease rate during the final stress release stage; σ3 is the stress value during the final stress release stage; and C is a constant. For example, if x1 is 0.15 L, k1 is greater than 10; if x2 is 0.4 L, k2 is less than -6; if x3 is 0.9 L, k3 is less than -5; and C is 30 to 40 N. L is the horizontal distance from the first stage to the last stage, which can be expressed as X4 - X1.

[0067] Preferably, the spatial position of the roller and the transmission parameters are related to the physical parameters of the fabric. For fabrics with low ductility, the lifting height of the first-stage roller should be appropriately reduced or the transmission rate should be slightly reduced on the basis of the above. On the contrary, for fabrics with high ductility, the variation range of the above parameters is within the range of ±20%.

[0068] In this embodiment, the number of roller groups is 6-12 based on full consideration of the stress state of the fabric during the processing of ultra-wide coated fabrics. In actual production, the width of the fabric is usually large, and too many or too few rollers cannot effectively control the stress state of the fabric. Six rollers can meet basic stress control needs, while 12 rollers can provide more precise control and are suitable for coating processes with higher requirements. When making specific choices, adjustments can be made based on the physical properties of the fabric, such as width, thickness, and ductility. For example, for fabrics with a larger width and poorer ductility, a larger number of rollers can be selected to ensure that the fabric is evenly stressed during transmission.

[0069] 2. Drive and transmission system

[0070] Primary and secondary rollers: Independently driven by servo motors with a speed ratio of 1:0.9 to ensure stable initial tensile stress.

[0071] Intermediate rollers: The active rollers (odd-numbered ones) are driven by a motor, while the passive rollers (even-numbered ones) are driven by friction with the fabric, thus reducing energy consumption.

[0072] Final roller: driven synchronously with the first roller to ensure complete stress release.

[0073] 3. Temperature control:

[0074] Forced convection heat exchange devices are deployed at different roller stages to control fabric temperature parameters based on the fabric's physical properties and process requirements. In practice, precise temperature control is achieved by adjusting the heat exchange medium temperature and flow rate within the heat exchange devices, taking into account the fabric's stress state and coating process requirements, ensuring the fabric's physical properties and coating quality during the coating process. For example, unlike the stress release state, the heat exchange curve features small heat transfer in the first and second stages to prevent fabric tearing during tensile strain. Intensified heat transfer occurs in the middle and later roller groups, ensuring the fabric achieves the desired temperature parameters in a relaxed state.

[0075] In this embodiment, the forced convection heat exchange device is primarily located in the middle and later roller stages, as the fabric is moderately under-relaxed during this stage and requires significant heat exchange to meet coating process requirements. The heat exchange device can be air-cooled. During placement, ensure sufficient contact area between the heat exchange device and the fabric to maximize heat exchange efficiency.

[0076] Heat exchange parameter adjustment methods: Heat exchange parameters primarily include the temperature and flow rate of the heat transfer medium. Adjustment of these parameters should be based on the physical properties of the fabric and the coating process requirements. For example, for fabrics with low ductility, the temperature of the heat transfer medium can be appropriately lowered, and the flow rate can be reduced to avoid excessive stress on the fabric. For fabrics with high ductility, the temperature and flow rate of the heat transfer medium can be increased to accelerate heat exchange. Optimal heat exchange parameters can be determined through experimentation or simulation.

[0077] Preferably, the fabric needs to be pretreated before processing the ultra-wide coated fabric. Pretreatment mainly includes steps such as cleaning, drying, and finishing of the fabric. Cleaning can remove impurities and oil stains on the surface of the fabric to ensure a good bond between the coating and the fabric; drying can remove moisture from the fabric to avoid bubbles and wrinkles during the coating process; finishing can stretch and flatten the fabric to keep it in good condition during transportation. The specific method of pretreatment can be selected according to the material and process requirements of the fabric. For example, for cotton fabrics, high-temperature steam finishing can be used; for chemical fiber fabrics, mechanical stretching finishing can be used.

[0078] The choice of coating material also has a significant impact on the quality of ultra-wide coated fabrics. When selecting a coating material, it's important to consider the fabric's physical properties and the coating process requirements. For example, for fabrics with high ductility, a coating material with excellent flexibility can be selected to ensure the coating doesn't crack during stretching. For coating processes requiring high-temperature resistance, a coating material with high heat resistance should be selected. Furthermore, the coating material should exhibit excellent adhesion, abrasion resistance, and chemical resistance to meet actual application requirements. When making a specific selection, the performance of different coating materials can be compared experimentally, and the most suitable coating material can be determined based on production costs and environmental requirements.

[0079] In order to verify the technical effect of the present invention, the ultra-wide coated fabric processing and transmission mechanism designed by the present invention is adopted and equipped with corresponding forced convection heat exchange device and coating equipment.

[0080] Experimental materials: Select fabrics with different physical properties, including cotton, chemical fiber and blended fabrics, as well as corresponding coating materials.

[0081] Experimental steps:

[0082] The fabric is transported according to the transport mechanism of the present invention, and the spatial configuration and transport parameters of the roller group are controlled to achieve uniform stress release at different stages.

[0083] During the transmission process, the temperature of the fabric is controlled by a forced convection heat exchange device to ensure that the fabric obtains the required temperature parameters in a relaxed state.

[0084] The fabrics that have been conveyed and temperature controlled are coated, and various parameters during the coating process, such as coating thickness, coating uniformity, etc., are recorded.

[0085] The performance of the coated fabrics is tested, including the adhesion, abrasion resistance, chemical resistance, etc.

[0086] Experimental results:

[0087] Compared with traditional transmission mechanisms, the transmission mechanism of this invention provides more uniform stress distribution during the coating process, significantly reducing problems such as uneven ductility, wrinkles, and tensile deformation. The coated fabric also boasts a more uniform coating thickness, approximately 20% greater adhesion, and improved abrasion and chemical resistance.

[0088] In terms of temperature control, the forced convection heat exchange device can effectively adjust the temperature parameters of the fabric in a relaxed state, and the quality problems caused by temperature problems during the coating process are significantly reduced.

[0089] Example 2

[0090] Based on the same concept, the present invention also proposes a control method for the processing of ultra-wide coated fabrics, comprising the following steps:

[0091] S00. Stress control in stages:

[0092] The rollers in the feeding stage are horizontally flush with the direction of the upstream incoming material, and the initial stress is σ0;

[0093] The first-stage lifting stage (0 ≤ x < x1): The stress σ(x) = σ0 + k1x;

[0094] The intermediate relaxation stage (x1 ≤ x < x2): The stress σ(x) = σ1 - k2x;

[0095] The mid-late under-relaxation stage (x2 ≤ x < x3): The stress σ(x) = C;

[0096] The last-stage stress release stage (x3 ≤ x < x4): The stress σ(x) = σ3 - k3x;

[0097] Where k1 is the stress increase rate in the initial stretching stage of the first-stage lifting stage; σ0 is the initial stress; σ1 is the stress value in the intermediate relaxation stage; σ3 is the stress value in the last-stage stress release stage; k2 is the stress decrease rate in the intermediate relaxation stage; k3 is the stress decrease rate in the last-stage stress release stage; and C is a constant.

[0098] For example, x1 is 0.15L, k1 is greater than 10; x2 is 0.4L, k2 is less than -6; x3 is 0.9L, k3 is less than -5; C is 30 - 40N, and L is the horizontal distance from the first stage to the last stage, which can be represented by X4 - X1.

[0099] S10. Dynamic parameter adaptation:

[0100] Adjust the transmission parameters according to the fabric ductility. For fabrics with ductility less than the preset threshold (set according to actual requirements and not limited), lower the height of the first-stage rollers or the transmission rate; for fabrics with ductility greater than or equal to the preset threshold, increase the height of the first-stage rollers or the transmission rate, and the adjustment range is ±20%;

[0101] S20. Forced convection heat transfer control:

[0102] Arrange forced convection heat transfer devices at different roller stages;

[0103] Perform heat transfer with the first amplitude in the first-stage lifting stage and the intermediate relaxation stage to avoid tearing of the fabric during the tensile strain process;

[0104] Perform heat transfer with the second amplitude in the mid-late under-relaxation stage, where the second amplitude is greater than the first amplitude.

[0105] It is worth mentioning that the roller configuration and stress of cotton and linen materials are as described in the above embodiments. Other fabrics may be different, but the parameters adjusted according to different fabrics should be considered to be within the scope recorded in this specification.

[0106] Those skilled in the art should understand that the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of the present invention. Therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A control method for a processing and transmission mechanism for ultra-wide coated fabrics, characterized in that: It includes the following steps: S00. Stress control in stages: The rollers in the feeding stage are horizontally flush with the upstream incoming material direction, and the initial stress is σ0; The first-stage lifting stage (0 ≤ x < x1): The stress σ(x) = σ0 + k1x; The intermediate relaxation stage (x1 ≤ x < x2): The stress σ(x) = σ1 - k2x; The middle and later under-relaxation stage (x2 ≤ x < x3): The stress σ(x) = C; The final-stage stress release stage (x3 ≤ x < x4): The stress σ(x) = σ3 - k3x; Where, k1 is the stress increase rate in the initial stretching stage of the first-stage lifting stage; σ0 is the initial stress; σ1 is the stress value in the intermediate relaxation stage; σ3 is the stress value in the final-stage stress release stage; k2 is the stress decrease rate in the intermediate relaxation stage; k3 is the stress decrease rate in the final-stage stress release stage; C is a constant; x1, x2, x3, x4 are the abscissas of the demarcation points of different stages, representing the position of the fabric in the transmission direction; S10. Dynamic parameter adaptation: Adjust the transmission parameters according to the fabric ductility. For fabrics with ductility less than the preset threshold, lower the height of the first-stage rollers or the transmission rate; for fabrics with ductility greater than or equal to the preset threshold, increase the height of the first-stage rollers or the transmission rate; S20. Forced convection heat transfer control: Arrange forced convection heat transfer devices at different roller stages; Perform heat transfer with the first amplitude in the first-stage lifting stage and the intermediate relaxation stage to avoid tearing of the fabric during the tensile strain process; Perform heat transfer with the second amplitude in the middle and later under-relaxation stage, where the second amplitude is greater than the first amplitude; Where, the ultra-wide-width coated fabric processing and transmission mechanism includes: A roller group composed of multiple rollers. The roller group is divided into a feeding stage, a first-stage lifting stage, an intermediate relaxation stage, a middle and later under-relaxation stage, and a final-stage stress release stage along the transmission direction. The heights of the rollers in each stage change according to a piecewise function curve, including a rapid rise section, a horizontal section, a gentle rise section, and a slow decline section; The parameter configuration of the roller group is: The first-stage rollers belonging to the feeding stage are horizontally flush with the upstream incoming material direction; The diameter of the final-stage rollers is the same as that of the first-stage rollers; The first-stage rollers and the secondary rollers are driven actively. The rotational speed of the secondary rollers is 0.9 times that of the first-stage rollers, and the intermediate-stage rollers are arranged alternately with active drive and passive drive.

2. The control method according to claim 1, wherein: The diameter of the roller group is also configured as: The diameter of the first-stage rollers is 30 - 40 cm, the diameter of the secondary rollers is 1.1 times that of the first-stage rollers, and the diameter of the intermediate-stage rollers is 20 - 30 cm.

3. The control method according to claim 2, wherein: The heights of the rollers in each stage change according to a piecewise function curve, and the formula is: Where, a, b, c, d, e, f are coefficients determined according to the specific parameters of the roller group and the physical properties of the fabric.

4. The control method according to claim 3, wherein: The plane length of the roller group is 1.1 - 1.2 times the width of the fabric, and the overall transmission rate is 0.3 - 0.5 m / s.

5. The control method according to any one of claims 1 to 4, characterized in that: The roller group is composed of 6 - 12 rollers.

6. The control method according to claim 1, wherein: In step S10, the adjustment range is ±20%.

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