Self-adaptive tension control automatic cloth laying device and deviation rectifying method thereof

Abstract

The invention relates to the field of cloth processing, in particular to an automatic cloth laying device with a self-adaptive tension control function and a deviation rectifying method of the automatic cloth laying device. Comprising an unwinding machine, a winding machine and a cloth bed, a deviation rectifying mechanism is arranged at the upper end of the cloth bed, the deviation rectifying mechanism comprises two symmetrical deviation rectifying sensors, a truss plate, a deviation rectifying plate and a deviation rectifying roller, and the deviation rectifying sensors control the deviation rectifying roller to horizontally deflect through a controller; stepless pitch changing devices are symmetrically arranged at the two ends of the deviation rectifying roller, the output ends of the deviation rectifying roller are rotationally connected with cone pulleys, and cloth abuts against the cone pulleys. And loosening mechanisms electrically connected with the controller are arranged on the two sides of the deviation rectifying roller and apply acting force used for adjusting tension to the upper end of the cloth. According to the device, through linkage cooperation of the deviation rectifying mechanism, the stepless distance changing device and the tension loosening mechanism, synchronous proceeding of cloth position deviation rectifying and tension adjusting is achieved, the problems that in the prior art, only global tension adjusting can be achieved, single-side deviation and tension unbalance cannot be matched are solved, automatic laying of various kinds of cloth is achieved, and the production efficiency and the product percent of pass are improved.

Description

Technical Field

[0001] This invention relates to the field of fabric processing, specifically to an automatic fabric laying device with adaptive tension control and its correction method. Background Technology

[0002] In the fabric processing industry, automated fabric laying is fundamental to subsequent cutting and sewing processes, and its accuracy and stability directly affect the final product quality. Currently, technical solutions combining the deflection action of the correction roller with tension adjustment have emerged, mitigating the interference between correction and tension adjustment to some extent. However, these solutions only achieve overall tension adjustment across the entire fabric, failing to precisely compensate for unilateral tension imbalances caused by misalignment, nor can they enhance the correction effect through auxiliary forces in the width direction. The response misalignment between correction and tension compensation remains, failing to fundamentally break the cycle of tension fluctuations caused by correction, which in turn leads to secondary misalignment. Furthermore, existing correction devices are designed for wide fabrics, and global adjustment cannot solve the problems of central wrinkles and wavy edges caused by uneven tension within the width. They also have extremely poor adaptability to easily deformable fabrics such as ultra-thin, high-elasticity fabrics.

[0003] Existing supplementary correction solutions for fabric edge deviation mostly employ edge guide rollers, fixed limiting rollers, and clamping roller-type correction structures. These solutions only passively limit the fabric edges and cannot provide active centripetal correction force, resulting in extremely low correction efficiency and a high risk of failure under high-speed conditions. Furthermore, these hard-contact limiting structures are prone to causing fabric edge snagging, pilling, and stretching deformation, especially damaging to lightweight and high-value-added fabrics. In addition, existing edge correction structures are completely independent of the main correction and tension adjustment system, failing to coordinate with the main correction roller's movement. They may even exacerbate unilateral tension imbalance due to forced edge limiting, further deteriorating the fabric's tension stability and laying accuracy.

[0004] To address these pain points, many industry solutions attempt to achieve precise width tension adjustment and coordinated edge correction by adding multiple sets of distributed tension sensors, independent edge actuators, and complex multi-axis collaborative control logic. However, such solutions not only significantly increase the manufacturing cost and daily maintenance difficulty of the equipment, but also easily lead to problems such as asynchronous signals from multiple sensors and uncoordinated actions of multiple actuators, resulting in a significantly higher system failure rate. This fails to meet the core requirements of industrial continuous production for low cost, high reliability, and high adaptability to all scenarios. Therefore, we need to design an adaptive tension control automatic fabric laying device. Summary of the Invention

[0005] Therefore, it is necessary to provide an adaptive tension control automatic fabric laying device and its correction method to address the existing technical problems.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] An adaptive tension-controlled automatic fabric laying device includes an unwinding machine for storing fabric, a winding machine for pulling fabric, and a fabric bed located on the side of the winding machine near the unwinding machine. It also includes:

[0008] The upper end of the fabric bed is equipped with a correction mechanism for correcting the fabric deviation. The correction mechanism includes two correction sensors symmetrically arranged on the upper end of the fabric bed. Above the two correction sensors is a truss plate fixed to the upper end of the fabric bed. Below the truss plate is a correction plate. On the side of the correction plate near the correction sensor, a correction roller is rotatably arranged to abut against the upper end of the fabric. The correction sensor controls the correction roller to deflect in the horizontal direction through a controller.

[0009] The two ends of the correction roller are respectively equipped with stepless pitch devices. Each output end of the two stepless pitch devices is rotatably connected to a conical wheel. The small end of the conical wheel is set towards the middle of the fabric bed, and the fabric abuts against each conical wheel.

[0010] The straightening roller is equipped with tensioning mechanisms on both sides, which are electrically connected to the controller. The tensioning mechanisms apply a force to the upper end of the fabric to adjust the fabric tension.

[0011] Furthermore, the correction rollers are arranged in an equidistant array along the circumference to form anti-slip textures.

[0012] Furthermore, a roller seat is provided at the upper end of the correction roller, and the two ends of the correction roller are rotatably connected to the roller seat respectively. Two guide plates are symmetrically arranged at the upper end of the roller seat. One end of the guide plate is hinged to the roller seat, and the other end is provided with a slotted guide hole.

[0013] The upper end of the correction plate has two symmetrical guide grooves, each guide groove has a guide block that is slidably arranged in it, and the upper end of each guide block is fixedly connected to a guide pin. The two guide pins are slidably connected to two guide holes respectively.

[0014] Furthermore, damping rods are respectively installed in the two guide slots, and the output ends of the two damping rods are fixedly connected to the two guide blocks respectively.

[0015] Furthermore, a swing shaft is provided at one end of the roller seat near the truss, the swing shaft is fixedly connected to the truss, and a swing ring is fixedly connected to the middle of the upper end of the roller seat and rotatably connected to the lower end of the swing shaft.

[0016] A cylinder is installed at the upper end of the correction plate. The fixed end of the cylinder is hinged to the correction plate, and the output end is hinged to the upper end of the swing ring.

[0017] Furthermore, clearance holes are provided on both sides of the fabric bed to allow the output end of the continuously variable pitch device to move.

[0018] Furthermore, each clearance hole of the fabric bed is provided with a through hole on both sides, and an electric slide is provided on both sides of the clearance hole. The lower end of the electric slide passes through the through hole and is fixedly connected to the upper end of the stepless pitch device.

[0019] The electric slide table is equipped with slide rails fixed to the fabric bed on its sides, and a slide plate fixed to the lower end of the electric slide table and slidably connected to the slide rails.

[0020] Furthermore, a main shaft is rotatably mounted above the continuously variable transmission device. Each conical wheel is provided with a bevel gear set at one end near the main shaft. The tooth seat of the bevel gear set is fixedly connected to the output end of the continuously variable transmission device. One end of the bevel gear set is fixedly connected to the conical wheel, and the other end is fixedly connected to the main sleeve. The main sleeve is keyed to the main shaft.

[0021] Two continuously variable transmission devices are each equipped with a motor fixed to the top of a slide plate. The output of the motor is connected to the main shaft via a reducer.

[0022] Furthermore, the tensioning mechanism also includes lifting devices at both ends of the lower pressure roller. The fixed end of the lifting device is fixedly connected to the truss plate, and the output end is rotatably connected to the lower pressure roller. The lifting device drives the lower pressure roller to adjust its position in the vertical direction.

[0023] Two pressure rollers are rotatably mounted on their adjacent sides to support the lower end of the fabric. When the pressure rollers press down, the support rollers and the support rollers apply force to the fabric from two directions.

[0024] The correction method for the adaptive tension-controlled automatic fabric laying device also includes the following correction steps:

[0025] S1: The unwinding machine releases the fabric, and the winding machine pulls the fabric along the fabric bed. Two symmetrically set correction sensors start synchronously to collect the position information of the fabric edge in real time and continuously transmit the collected signals to the controller.

[0026] S2: The controller receives the position signal transmitted by the correction sensor, analyzes and processes the signal, and sends control commands to the correction roller, the stepless pitch device and the tensioning mechanism based on the processing results.

[0027] S3: The correction roller deflects horizontally according to the controller's instructions to correct the position of the offset fabric. The stepless pitch device is activated to adjust the distance between the cone wheels at the output end to avoid uneven stretching of the fabric edges. The tensioning mechanism operates synchronously to apply an appropriate force to the upper end of the fabric, adjust the fabric tension, and ensure that the fabric does not tear during the correction process.

[0028] S4: The correction sensor continuously monitors the position information of the fabric after correction and transmits the feedback signal to the controller. The controller determines the preset position of the fabric. If it does not return to the original position, it repeats steps S2-S3 until the fabric position is accurate, thus achieving closed-loop correction.

[0029] The beneficial effects of this invention compared to the prior art are:

[0030] Firstly, this device achieves simultaneous execution of the correction action and precise tension compensation in the width direction through the combined action of the correction roller, the stepless pitch device, and the full-width conical wheel. This completely solves the core problem of existing technologies that can only achieve global tension adjustment and cannot match the tension imbalance of one side deviation. While the correction roller deflects to perform correction, the corresponding side conical wheel simultaneously completes the lifting and lowering, accurately compensating for the changes in wrap angle and tension fluctuations caused by correction, achieving uniform tension within the width, effectively avoiding the problems of wrinkles in wide fabrics and stretching deformation of high-elastic fabrics, and fundamentally avoiding the vicious cycle of mutual interference between correction and tension.

[0031] Secondly, this device replaces the existing hard-contact edge limiting structure with a conical wheel structure that works synchronously with the correction roller. This achieves the integration of active centripetal correction and edge tension adjustment, solving the defect that the existing edge correction scheme can only passively limit the movement and cannot be linked with the main correction system. The rolling contact conical wheel does not cause hard friction damage, avoiding damage to the fabric. It can provide the same direction correction force synchronously with the correction action, and at the same time complete the precise compensation of edge tension. There is no need to add an additional actuator, which improves the reliability of the equipment and the adaptability to different fabrics. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0033] Figure 2 This is a three-dimensional structural schematic diagram from another angle of the embodiment;

[0034] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0035] Figure 4 This is a top view of the truss in the embodiment;

[0036] Figure 5 yes Figure 4 Three-dimensional half-section view of the structure at point BB;

[0037] Figure 6 This is a three-dimensional structural diagram of the truss, the correction plate, and the correction roller in the embodiment;

[0038] Figure 7 yes Figure 6 Enlarged view of the structure at point C;

[0039] Figure 8 This is a three-dimensional exploded view of the truss, the correction plate, and the correction roller in the embodiment;

[0040] Figure 9 yes Figure 8 Enlarged view of the structure at point D;

[0041] Figure 10 This is a three-dimensional structural diagram of the continuously variable pitch device and the fabric bed in the embodiment;

[0042] Figure 11 yes Figure 10 Enlarged view of the structure at point E in the middle;

[0043] Figure 12 This is a three-dimensional structural diagram of the continuously variable pitch device and the conical wheel in the embodiment;

[0044] Figure 13 This is a top view of the transverse transport of the fabric in the embodiment.

[0045] The numbers on the map are:

[0046] 1. Unwinder; 2. Fabric bed; 3. Perforation; 4. Clearance hole; 5. Winding machine; 6. Correction mechanism; 7. Truss plate; 8. Guide groove; 9. Guide block; 10. Guide pin; 11. Damping rod; 12. Guide plate; 13. Guide hole; 14. Correction plate; 15. Correction roller; 16. Anti-slip texture; 17. Roller seat; 18. Cylinder; 19. Swing ring; 20. Swing shaft; 21. Correction sensor; 22. Stepless pitch control device; 23. Motor; 24. Main shaft; 25. Main sleeve; 26. Bevel gear assembly; 27. Conical wheel; 28. Slide rail; 29. ​​Slide plate; 30. Electric slide table; 31. Tensioning mechanism; 32. Lifting device; 33. Bearing roller; 34. Lower pressure roller. Detailed Implementation

[0047] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0048] refer to Figures 1 to 13 An adaptive tension-controlled automatic fabric laying device includes an unwinding machine 1 for storing fabric, a winding machine 5 for pulling fabric, and a fabric bed 2 disposed on the side of the winding machine 5 near the unwinding machine 1. It also includes:

[0049] The upper end of the fabric bed 2 is provided with a correction mechanism 6 for correcting the fabric deviation. The correction mechanism 6 includes two correction sensors 21 symmetrically arranged on the upper end of the fabric bed 2. Above the two correction sensors 21, there is a truss 7 fixed to the upper end of the fabric bed 2. Below the truss 7, there is a correction plate 14 fixed. On the side of the correction plate 14 near the correction sensor 21, there is a correction roller 15 that rolls against the upper end of the fabric. The correction sensor 21 controls the correction roller 15 to deflect in the horizontal direction through the controller.

[0050] The two ends of the correction roller 15 are respectively symmetrically provided with stepless pitch devices 22. Each output end of the two stepless pitch devices 22 is rotatably connected to a cone wheel 27. The small end of the cone wheel 27 is set towards the middle of the fabric bed 2, and the fabric abuts against each cone wheel 27.

[0051] The straightening roller 15 is provided with tensioning mechanisms 31 on both sides, which are electrically connected to the controller. The tensioning mechanisms 31 apply a force to the upper end of the fabric to adjust the tension of the fabric.

[0052] When this device is in operation, taking a top-down view as an example (see reference here). Figure 13 The fabric conveying direction is defined as transverse (from left to right is the positive transverse direction, i.e., refer to...). Figure 13 (In the direction indicated by the middle arrow), the fabric width direction perpendicular to the conveying direction is the longitudinal direction. Unwinder 1 is located at the transverse feeding end (left side), and rewinder 5 is located at the transverse discharge end (right side). The two width edges of the fabric are the upper and lower longitudinal edges, respectively. Unwinder 1 continuously unwinds the fabric, which is supported by fabric bed 2 and conveyed transversely, and finally pulled and wound up by rewinder 5 on the right side.

[0053] During the conveying process, two sets of correction sensors 21, symmetrically arranged longitudinally on the upper end of the fabric bed 2, respectively detect the edge position signals on the upper and lower sides of the fabric in the longitudinal direction and continuously feed them back to the controller. When the fabric deviates longitudinally and causes the edge position to exceed the preset centering threshold, the controller immediately outputs a drive command to drive the correction roller 15, which rolls against the upper end of the fabric, to complete the precise horizontal deflection.

[0054] Reference here Figure 13 If the fabric deviates towards the upper longitudinal edge, the end of the correction roller 15 closest to the deviated side deflects towards the lateral feeding side (towards the unwinding machine 1), while the end of the roller closest to the opposite correction edge deflects towards the lateral discharge side (towards the winding machine 5). If the fabric deviates towards the lower longitudinal edge, the corresponding end of the correction roller 15 deflects in the opposite direction. The longitudinal correction force generated by the contact between the inclined roller and the fabric, pointing towards the center of the fabric width, pulls the deviated fabric back to the center of the fabric width, completing the basic closed-loop correction control and solving the longitudinal deviation problem during fabric conveying.

[0055] While the correction roller 15 is deflecting, the stepless pitch device 22, which is symmetrically arranged at both ends along the longitudinal direction, is triggered simultaneously. The pitch of each output end is steplessly adjusted according to the deflection displacement difference at both ends of the correction roller 15.

[0056] During this process, the continuously variable pitch device 22 corresponding to the longitudinal deviation side of the fabric, as the end of the correction roller 15 deflects, synchronously reduces the output end spacing, driving the corresponding conical wheel 27 closer to the fabric, with its small end tightly abutting the lower surface of the fabric. Through the conical structure, a centripetal correcting force in the same direction as the correction direction is generated, while increasing the wrap angle of the fabric on that side to compensate for the tension relaxation caused by the deviation. The continuously variable pitch device 22 corresponding to the longitudinal correction side of the fabric, as the end of the correction roller 15 deflects, synchronously increases the output end spacing, driving the corresponding conical wheel 27 away from the fabric, reducing contact resistance and the wrap angle of the fabric, releasing the excess tension on that side, realizing the synchronous coordination of the correction action and tension compensation, and avoiding the problems of global tension fluctuation and uneven tension in the width direction caused by the correction action.

[0057] While the correction mechanism 6 and the continuously variable pitch conical wheel 27 work together, the controller simultaneously transmits the correction action signal and edge position signal to the tension release mechanism 31 on both sides of the correction roller 15. The tension release mechanism 31 simultaneously applies a corresponding force to the upper end of the fabric, completing the feedforward compensation of the global tension and offsetting the global tension fluctuations that may be caused by the correction action. When the global tension of the fabric fluctuates due to changes in operating conditions such as start-stop and speed change, the tension release mechanism 31 can independently complete the adaptive fine adjustment of the tension. Together with the centering control of the correction mechanism 6 and the width tension balance of the conical wheel 27, a closed-loop cycle of deviation detection, correction execution and tension compensation is formed, realizing high-precision centering and constant tension stable conveying of the fabric under different conveying conditions, adapting to the laying requirements of fabrics of different materials and thicknesses.

[0058] To prevent slippage between the alignment roller 15 and the fabric, the following features are specifically designed:

[0059] like Figure 3 As shown, the alignment roller 15 has anti-slip patterns 16 arranged in an evenly spaced array along the circumference. During the fabric feeding and alignment process, the anti-slip patterns 16 can increase the friction between the alignment roller 15 and the fabric, preventing relative slippage caused by the deflection of the alignment roller 15 or changes in fabric tension. This ensures that the alignment force can be accurately transmitted to the fabric, guaranteeing alignment accuracy, while preventing slippage from causing wear on the fabric surface. Combined with the monitoring and control of the alignment mechanism 6, this further improves the laying stability.

[0060] In order to limit the deflection process of the correction roller 15, the following features are specifically set:

[0061] like Figure 8 and Figure 9 As shown, a roller seat 17 is provided at the upper end of the correction roller 15. The two ends of the correction roller 15 are rotatably connected to the roller seat 17. Two guide plates 12 are symmetrically arranged at the upper end of the roller seat 17. One end of the guide plate 12 is hinged to the roller seat 17, and the other end is provided with a slotted guide hole 13.

[0062] Two guide grooves 8 are symmetrically opened at the upper end of the correction plate 14. A guide block 9 is slidably arranged in each guide groove 8. A guide pin 10 is fixedly connected to the upper end of each guide block 9. The two guide pins 10 are slidably connected to the two guide holes 13 respectively.

[0063] When the straightening roller 15 deflects horizontally, the roller seat 17 drives the guide plate 12 to move synchronously, the guide hole 13 slides along the guide pin 10, and the guide block 9 slides synchronously in the guide groove 8. Through the cooperation of the guide groove 8 and the guide block 9, and the guide hole 13 and the guide pin 10, the deflection angle of the straightening roller 15 is limited to prevent the edge of the fabric from being stretched and broken or the deviation from being aggravated due to the end movement of the straightening roller 15 during the deflection process, so as to ensure that the straightening process is stable and controllable.

[0064] To buffer the movement of guide block 9, the following features are specifically designed:

[0065] like Figure 9 As shown, damping rods 11 are respectively installed in the two guide grooves 8, and the output ends of the two damping rods 11 are fixedly connected to the two guide blocks 9. When the guide block 9 slides along the guide groove 8 as the straightening roller 15 deflects, the damping rods 11 can generate a buffering force on the movement of the guide block 9, reduce the sliding speed of the guide block 9, avoid rigid collision between the guide block 9 and the end of the guide groove 8, reduce component wear, and at the same time make the deflection process of the straightening roller 15 more stable, prevent sudden changes in fabric tension due to excessive deflection speed, and cooperate with the tension adjustment of the tension loosening mechanism 31 to ensure the stability of the fabric laying process.

[0066] In order to enable the correction roller 15 to deflect along the midpoint of its axis, the following features are specifically designed:

[0067] like Figure 8 As shown, a swing shaft 20 is provided at one end of the roller seat 17 near the truss 7. The swing shaft 20 is fixedly connected to the truss 7. A swing ring 19 is fixedly connected to the middle of the upper end of the roller seat 17 and is rotatably connected to the lower end of the swing shaft 20.

[0068] A cylinder 18 is installed at the upper end of the correction plate 14. The fixed end of the cylinder 18 is hinged to the correction plate 14, and the output end is hinged to the upper end of the swing ring 19. When the correction roller 15 needs to be deflected, the controller controls the cylinder 18 to extend and retract. At this time, the cylinder 18 drives the swing ring 19 to rotate around the swing shaft 20, which drives the roller seat 17 and the correction roller 15 to deflect along the midpoint of their axis. This ensures that the correction amplitude on both sides of the fabric is uniform, avoids excessive deflection on one side which would cause the fabric to twist, and works in conjunction with the symmetrical monitoring of the correction sensor 21 to ensure the flatness of the fabric and improve the correction accuracy.

[0069] In order to enable the installation of the continuously variable pitch device 22, the following features are specifically provided:

[0070] like Figure 10As shown, clearance holes 4 are provided on both sides of the fabric bed 2 to allow the output end of the continuously variable pitch device 22 to move. The clearance holes 4 provide movement space for the output end of the continuously variable pitch device 22, avoiding interference with the fabric bed 2 and ensuring that the continuously variable pitch device 22 can operate flexibly.

[0071] In order to adjust the position of the continuously variable pitch device 22 so that the cone wheel 27 can move closer to or further away from the fabric, the following features are specifically provided:

[0072] like Figure 10 As shown, each clearance hole 4 of the fabric bed 2 has a through hole 3 on both sides, and an electric slide table 30 is provided on both sides of the clearance hole 4. The lower end of the electric slide table 30 passes through the through hole 3 and is fixedly connected to the upper end of the stepless pitch device 22.

[0073] The electric slide table 30 is provided with slide rails 28 fixed to the fabric bed 2 on its side, and a slide plate 29 fixed to the lower end of the electric slide table 30 and slidably connected to the slide rails 28.

[0074] When the distance between the output ends of the continuously variable pitch device 22 changes, the electric slide table 30 drives the continuously variable pitch device 22 to move along the slide rail 28, causing the cone wheel 27 to move closer to or further away from the fabric, ensuring that the cone wheel 27 and the fabric always maintain a suitable contact force, and ensuring that the speed adjustment of the cone wheel 27 can be effectively transmitted to the fabric, so as to realize the adaptive adjustment of the device to the fabric tension fluctuation and edge position change.

[0075] To ensure that the conical wheel 27 still receives sufficient driving force after the output end of the continuously variable transmission 22 moves, the following features are specifically provided:

[0076] like Figure 11 As shown, a main shaft 24 is rotatably mounted above the continuously variable transmission device 22. Each conical wheel 27 is provided with a bevel gear set 26 at one end near the main shaft 24. The tooth seat of the bevel gear set 26 is fixedly connected to the output end of the continuously variable transmission device 22. One end of the bevel gear set 26 is fixedly connected to the conical wheel 27, and the other end is fixedly connected to the main sleeve 25. The main sleeve 25 is keyed to the main shaft 24.

[0077] Two continuously variable transmission devices 22 are respectively provided with a motor 23 fixed to the upper end of a slide plate 29. The output end of the motor 23 is connected to the main shaft 24 through a reducer.

[0078] When the distance between the output ends of the continuously variable pitch device 22 changes, the bevel gear group 26 moves synchronously with the continuously variable pitch device 22. The main sleeve 25 is keyed to the main shaft 24. The motor 23 drives the main shaft 24 to rotate through the reducer, and then transmits the driving force to the cone wheel 27 through the bevel gear group 26. This ensures that after the distance between several cone wheels 27 changes, each cone wheel 27 can still obtain sufficient driving force, forming a stable cooperation with the correction mechanism 6 and the tensioning mechanism 31, thus ensuring the stability of the fabric laying.

[0079] To further elaborate on the specific structure of the tensioning mechanism 31, the following features are also provided:

[0080] like Figure 4 As shown, the tensioning mechanism 31 also includes lifting devices 32 disposed at both ends of the lower pressure roller 34. The fixed end of the lifting device 32 is fixedly connected to the truss plate 7, and the output end is rotatably connected to the lower pressure roller 34. The lifting device 32 drives the lower pressure roller 34 to adjust its position in the vertical direction.

[0081] On the side of the two pressing rollers 34 that are close to each other, there are respectively a support roller 33 that supports the lower end of the fabric. When the pressing rollers 34 press down, the support rollers 33 apply force to the fabric from two directions.

[0082] When the controller controls the tensioning mechanism 31 to adjust the fabric tension, the lifting device 32 drives the lower pressure roller 34 to move up and down, and works with the bearing roller 33 to clamp the fabric from the upper and lower sides. By adjusting the pressure of the lower pressure roller 34, the fabric tension is precisely controlled. When the correction mechanism 6 and the stepless pitch device 22 cause the fabric tension to change, the tensioning mechanism 31 can respond quickly and adjust the tension to the appropriate range in real time to avoid wrinkles and tears in the fabric, thus achieving synchronous linkage between tension adjustment and position correction.

[0083] The correction method for the adaptive tension-controlled automatic fabric laying device also includes the following correction steps:

[0084] S1: Unwinder 1 releases the fabric, and rewinder 5 pulls the fabric along the fabric bed 2. Two symmetrically arranged correction sensors 21 start synchronously to collect the position information of the fabric edge in real time and continuously transmit the collected signals to the controller.

[0085] S2: The controller receives the position signal transmitted by the correction sensor 21, analyzes and processes the signal, and sends control commands to the correction roller 15, the stepless pitch device 22 and the tension release mechanism 31 according to the processing results.

[0086] S3: The straightening roller 15 deflects horizontally according to the controller's instructions to correct the position of the offset fabric. The stepless pitch device 22 is activated to adjust the distance between the output cone wheels 27 to avoid uneven stretching of the fabric edge. The tensioning mechanism 31 operates synchronously to apply an appropriate force to the upper end of the fabric, adjust the fabric tension, and ensure that the fabric does not tear during the straightening process.

[0087] S4: The correction sensor 21 continuously monitors the position information of the fabric after correction and transmits the feedback signal to the controller. The controller determines the preset position of the fabric. If the fabric does not return to its original position, the steps S2-S3 are repeated until the fabric position is accurate, thus achieving closed-loop correction.

[0088] The detailed working principle of this device is as follows: the unwinder 1 continuously releases fabric, which is then supported by the fabric bed 2 and conveyed horizontally towards the winding machine 5. Finally, the winding machine 5 provides traction power to complete the continuous laying. (Reference here) Figure 13 Taking a top-down view as an example, the fabric conveying direction is defined as horizontal (from left to right is the positive horizontal direction, i.e., refer to...). Figure 13 (In the direction indicated by the middle arrow), the fabric width direction perpendicular to the conveying direction is the longitudinal direction. Unwinder 1 is located at the transverse material receiving end, and rewinder 5 is located at the transverse material output end. The two width edges of the fabric are the longitudinal upper edge and the longitudinal lower edge, respectively.

[0089] The unwinding machine 1 continuously releases fabric, which is then supported by the fabric bed 2 and conveyed laterally. The winding machine 5 provides traction power to complete the continuous laying. Two sets of correction sensors 21, symmetrically arranged longitudinally at the upper end of the fabric bed 2, respectively detect the real-time position signals of the two longitudinal edges and continuously feed them back to the controller. When the fabric deviates longitudinally and the edge position exceeds the preset centering threshold, the controller outputs a drive command to the cylinder 18. The cylinder 18 extends and retracts, driving the swing ring 19 to rotate around the swing shaft 20, causing the roller seat 17 and the correction roller 15 to complete precise deflection along the midpoint of the axis: when the fabric deviates towards the upper longitudinal edge, the upper roller end of the correction roller 15 deflects towards the lateral incoming side, and the lower roller end deflects towards the lateral outgoing side; when the fabric deviates towards the lower longitudinal edge, the corresponding roller end of the correction roller 15 deflects in the opposite direction. The anti-slip texture 16 on the surface of the correction roller 15 increases the friction with the fabric, preventing relative slippage. Through the longitudinal corrective force generated by the inclined roller body pointing towards the center of the width, the fabric is pulled back to the centering position. During the deflection process, the roller seat 17 drives the guide plate 12 to move synchronously. The guide hole 13 and the guide pin 10, the guide block 9 and the guide groove 8 cooperate to complete the deflection limit. The damping rod 11 buffers the sliding of the guide block 9, ensuring that the correction process is stable and controllable.

[0090] While the correction roller 15 deflects, the continuously variable pitch devices 22, symmetrically arranged at both ends along the longitudinal direction, are simultaneously triggered and linked. The output pitch is continuously adjusted according to the displacement difference between the two ends of the correction roller 15. The clearance holes 4 on both sides of the fabric bed 2 provide space for the continuously variable pitch devices 22 to move and avoid obstacles. Specifically, the output pitch of the continuously variable pitch devices 22 on the longitudinal deviation side decreases synchronously. The electric slide table 30 drives the continuously variable pitch devices 22 to move along the slide rail 28, causing the corresponding conical wheel 27 to approach the lower surface of the fabric. At this time, the outer surface of the conical wheel 27 tightly abuts against the lower surface of the fabric, generating a centripetal correcting force in the same direction as the correction direction through the conical surface, while simultaneously increasing the tension relaxation of the wrap angle compensation on that side. Simultaneously, the output pitch on the correcting side increases synchronously, causing the corresponding conical wheel 27 to move away from the lower surface of the fabric, releasing excess tension. During operation, the motor 23 drives the main shaft 24 to rotate through the reducer. The main sleeve 25 and the bevel gear group 26 connected by the key transmit the driving force synchronously to each conical wheel 27, ensuring that a stable driving force can still be obtained after the spacing of the conical wheels 27 changes.

[0091] The controller synchronously transmits the correction action signal and edge position signal to the tension release mechanism 31 on both sides of the correction roller 15. The lifting device 32 drives the lower pressure roller 34 to move vertically, and together with the fixed bearing roller 33, applies force to the fabric from the top and bottom to complete the feedforward compensation of the global tension. When the global tension of the fabric fluctuates due to start-stop and speed change, the tension release mechanism 31 can independently complete the adaptive fine adjustment of the tension. The correction sensor 21 continuously collects the edge position signal of the fabric after correction to form a closed-loop feedback. The controller continuously optimizes the control command according to the feedback signal until the fabric returns to the preset centering position, forming a closed-loop cyclic control chain to achieve high-precision centering and constant tension stable laying of the fabric under different working conditions.

[0092] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An adaptive tension-controlled automatic fabric laying device, comprising an unwinding machine (1) for storing fabric, a winding machine (5) for pulling fabric, and a fabric bed (2) disposed on the side of the winding machine (5) near the unwinding machine (1), characterized in that, Also includes: The upper end of the fabric bed (2) is provided with a correction mechanism (6) for correcting the fabric deviation. The correction mechanism (6) includes two correction sensors (21) symmetrically arranged on the upper end of the fabric bed (2). Above the two correction sensors (21) is a truss (7) fixed to the upper end of the fabric bed (2). Below the truss (7) is a correction plate (14). On the side of the correction plate (14) close to the correction sensor (21), a correction roller (15) is rotatably arranged to roll against the upper end of the fabric. The correction sensor (21) controls the correction roller (15) to deflect in the horizontal direction through the controller. The two ends of the correction roller (15) are respectively symmetrically provided with stepless pitch devices (22). Each output end of the two stepless pitch devices (22) is rotatably connected to a cone wheel (27). The small end of the cone wheel (27) is set towards the middle of the fabric bed (2), and the fabric abuts against each cone wheel (27). The straightening roller (15) is provided with tensioning mechanisms (31) electrically connected to the controller on both sides. The tensioning mechanisms (31) apply a force to the upper end of the fabric to adjust the tension of the fabric.

2. The adaptive tension control fabric automatic laying device according to claim 1, characterized in that, The correction roller (15) is formed with anti-slip texture (16) in an equal angle array along the circumference.

3. The adaptive tension control fabric automatic laying device according to claim 2, characterized in that, The upper end of the correction roller (15) is provided with a roller seat (17). The two ends of the correction roller (15) are rotatably connected to the roller seat (17). The upper end of the roller seat (17) is symmetrically provided with two guide plates (12). One end of the guide plate (12) is hinged to the roller seat (17), and the other end is provided with a slotted guide hole (13). The upper end of the correction plate (14) has two symmetrical guide grooves (8), each guide groove (8) is slidably provided with a guide block (9), and the upper end of each guide block (9) is fixedly connected with a guide pin (10). The two guide pins (10) are slidably connected to the two guide holes (13).

4. The adaptive tension control fabric automatic laying device according to claim 3, characterized in that, Damping rods (11) are respectively provided in the two guide grooves (8), and the output ends of the two damping rods (11) are respectively fixedly connected to the two guide blocks (9).

5. The adaptive tension control fabric automatic laying device according to claim 3, characterized in that, A swing shaft (20) is provided at one end of the roller seat (17) near the truss (7). The swing shaft (20) is fixedly connected to the truss (7). A swing ring (19) is fixedly connected to the middle of the upper end of the roller seat (17) and rotates to be connected to the lower end of the swing shaft (20). A cylinder (18) is provided at the upper end of the correction plate (14). The fixed end of the cylinder (18) is hinged to the correction plate (14), and the output end is hinged to the upper end of the swing ring (19).

6. The adaptive tension control fabric automatic laying device according to claim 1, characterized in that, The fabric bed (2) has clearance holes (4) on both sides for the output end of the stepless pitch device (22) to move.

7. The adaptive tension control fabric automatic laying device according to claim 6, characterized in that, Each clearance hole (4) of the fabric bed (2) has a through hole (3) on both sides. An electric slide (30) is provided on both sides of the clearance hole (4). The lower end of the electric slide (30) passes through the through hole (3) and is fixedly connected to the upper end of the stepless pitch device (22). The electric slide table (30) is provided with slide rails (28) fixed to the fabric bed (2) on the side, and the lower end of the electric slide table (30) is fixed with a slide plate (29) that is slidably connected to the slide rails (28).

8. The adaptive tension control fabric automatic laying device according to claim 7, characterized in that, A main shaft (24) is rotatably mounted above the continuously variable pitch device (22). Each conical wheel (27) is provided with a bevel gear set (26) at one end near the main shaft (24). The tooth seat of the bevel gear set (26) is fixedly connected to the output end of the continuously variable pitch device (22). One end of the bevel gear set (26) is fixedly connected to the conical wheel (27), and the other end is fixedly connected to the main sleeve (25). The main sleeve (25) is keyed to the main shaft (24). Two continuously variable transmission devices (22) are respectively provided with motors (23) fixed to the upper end of a slide plate (29) on the side. The output end of the motor (23) is connected to the main shaft (24) through a reducer.

9. The adaptive tension control fabric automatic laying device according to claim 8, characterized in that, The tensioning mechanism (31) also includes lifting devices (32) set at both ends of the lower pressure roller (34). The fixed end of the lifting device (32) is fixedly connected to the truss (7), and the output end is rotatably connected to the lower pressure roller (34). The lifting device (32) drives the lower pressure roller (34) to adjust its position in the vertical direction. Two pressure rollers (34) are respectively rotatably mounted on the side of their proximity to each other, and a support roller (33) is provided to support the lower end of the fabric. When the pressure roller (34) presses down, the support roller (33) applies force to the fabric from two directions.

10. A method for correcting deviations in an adaptive tension-controlled automatic fabric laying device, comprising the adaptive tension-controlled automatic fabric laying device as described in claim 1, characterized in that, It also includes the following corrective steps: S1: The unwinding machine (1) releases the fabric, and the winding machine (5) pulls the fabric along the fabric bed (2). Two symmetrically set correction sensors (21) start synchronously, collect the position information of the fabric edge in real time, and continuously transmit the collected signals to the controller. S2: The controller receives the position signal transmitted by the correction sensor (21), analyzes and processes the signal, and sends instructions to the correction roller (15), the stepless pitch device (22) and the tension release mechanism (31) according to the processing result; S3: The correction roller (15) deflects horizontally according to the controller's instructions to correct the position of the offset fabric. The stepless pitch device (22) is activated to adjust the distance between the output cone wheels (27) to avoid uneven stretching of the fabric edge. The tensioning mechanism (31) operates synchronously to apply an appropriate force to the upper end of the fabric, adjust the fabric tension, and ensure that the fabric does not tear during the correction process. S4: The correction sensor (21) continuously monitors the position information of the fabric after correction and transmits the feedback signal to the controller. The controller determines the preset position of the fabric. If the fabric does not return, the steps S2-S3 are repeated until the fabric is reset, thus realizing closed-loop correction.

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