On-line detection control system for tensile elastic recovery rate of fabric and control method of on-line detection control system

Abstract

The invention discloses a fabric tensile elasticity recovery rate online detection control system and a control method thereof. The system comprises a computer controller, a fixed elongation load force detection and calibration module, an automatic load weight adjusting and controlling module and a fixed elongation load force loading compression roller. The computer controller is used for sending out a fixed stretching load force demand and calculating the fixed stretching length of the fabric; the automatic adjustment and control load weight module and the fixed elongation load force loading compression roller are arranged in a complete set and are used for being arranged on the continuous dyeing machine in a swinging manner, and the fixed elongation load force acting on fabric by the fixed elongation load force loading compression roller is adjusted through the swinging of the automatic adjustment and control load weight module and the fixed elongation load force loading compression roller; and the fixed elongation load force detection and calibration module is arranged at the output end of the continuous dyeing machine. The constant elongation load force can be accurately controlled when the fabric is dyed.

Description

Technical Field

[0001] The invention relates to the technical field of dyeing machinery, and in particular to an online detection control system for fabric tensile elastic recovery rate and a control method thereof. Background Art

[0002] Currently, various specifications of stretch fabrics, such as tapes, ropes, and webbings, made from synthetic fibers with high elongation and resilience, are dyed in continuous dyeing machines using a counterweight (or cylinder pressure) applied to the fabric to achieve a specific elongation load within a certain range to meet customer requirements for elastic recovery. In actual production, due to the wide variety of fabric specifications, the varying quantity of fabric dyed in a batch, and varying customer elastic recovery requirements, the calibration of the elongation load is a crucial control factor in the elastic fabric dyeing process and requires focused attention.

[0003] In the dyeing industry, the traditional constant elongation load is manually calibrated based on feel and experience. The required load is then manually adjusted by adding a weight to the pressure roller to achieve the desired load. Due to the lack of precise measurement and quantified data, it is impossible to determine the appropriate constant elongation load required for the elastic recovery rate of the fabric. If the constant elongation load is too large, the stretch fabric will be permanently set under the high temperature conditions during the dyeing process, resulting in a decrease in elasticity or even loss of elasticity. If the constant elongation load is too small, the stretch fabric will experience problems such as machine jerking, banding, wrinkles, and wrinkles during the dyeing process. Furthermore, the fabric will shrink after dyeing, seriously affecting the elastic recovery rate, dyeing quality, and stability. Summary of the Invention In order to solve at least one of the problems existing in the prior art, the present invention provides an online detection control system for fabric tensile elastic recovery rate and a control method thereof.

[0004] In order to achieve the purpose of the present invention, the present invention provides an online detection and control system for fabric tensile elastic recovery rate, comprising a computer controller, a constant elongation load force detection and calibration module, an automatic adjustment and control load weight module, and a constant elongation load force loading roller; The computer controller is used to issue the fixed elongation load force requirement and to calculate the fixed elongation of the fabric; An automatic adjustment and control load weight module and a constant elongation load force loading roller are provided as a set and are used for swinging on a continuous dyeing machine. The constant elongation load force applied by the constant elongation load force loading roller on the fabric is adjusted by swinging the automatic adjustment and control load weight module and the constant elongation load force loading roller. The fixed elongation load force detection and calibration module is used to be arranged at the output end of the continuous dyeing machine.

[0005] Furthermore, the constant extension load force detection and calibration module includes a chassis, a front frame, a rear frame, a front clamping device, a rear clamping device, a weight sensor and an automated light barrier; The front frame and the rear frame are arranged opposite to each other and are movably arranged on the base frame; The front clamping device is swingably mounted on the front frame, and the rear clamping device is fixedly mounted on the rear frame, and the distance between the front clamping device and the rear clamping device is adjustable; The weight sensor is arranged on the front frame; The signal transmitting end and the signal receiving end of the automation light barrier are fixed on the front frame and the rear frame respectively.

[0006] Furthermore, the fixed elongation load force detection and calibration module also includes an upper frame, a first guide rail and a lower frame, the rear frame is arranged on the upper frame, the upper frame is slidably arranged on the first guide rail, and the distance between the front clamping device and the rear clamping device is adjusted by sliding the upper frame; the first guide rail is arranged on the lower frame, the lower frame is slidably arranged on the base frame, and the front frame is arranged on the lower frame.

[0007] Furthermore, the constant elongation load force detection and calibration module also includes an electric cylinder device, and the pull rod of the electric cylinder device is connected to the upper frame.

[0008] Furthermore, the constant elongation load force detection and calibration module also includes a stretching cylinder, and the output end of the stretching cylinder is connected to the lower frame.

[0009] Furthermore, the front clamping device and the rear clamping device both include a cylinder assembly, a pressure beam assembly, an upper die and a lower die. The output end of the cylinder assembly is connected to the pressure beam assembly. The upper die and the lower die are arranged opposite to each other, and the upper die is connected to the pressure beam assembly. The fitting, pressing and separation between the die and the lower die are achieved by driving the cylinder assembly.

[0010] Furthermore, the automatic adjustment and control load weight module is connected to one side of the constant elongation load force loading roller to form a whole, and the connected whole is set on the continuous dyeing machine through a bearing.

[0011] Furthermore, the automatic adjustment and control load weight module includes a control motor, a screw module, a counterweight, a distance sensor and an angle sensor. The screw module is connected to the control motor, and the counterweight is movably set on the screw module. The distance sensor is used to detect the real-time movement distance of the counterweight, and the angle sensor is used to detect the angle between the automatic adjustment control load weight module and the fixed elongation load force loading roller after the counterweight moves and the horizontal.

[0012] The present invention provides an online detection and control method for fabric tensile elastic recovery rate, comprising the following steps: When the fabric is dyed in the continuous dyeing machine, the fabric is clamped by the front clamping device and the rear clamping device; The front frame and the rear frame are moved toward the front frame as a whole, and the front clamping device and the rear clamping device move accordingly, so that the fabric at the front end of the system is in a relaxed state; Adjust the distance between the front clamping device and the rear clamping device. When the fabric naturally droops and touches the automated grating detection point, the distance between the preset automated grating detection point and the lower die plane in the front clamping device is used to calculate the arch height h of the fabric in the arc state, as well as the chord length between the front clamping device and the rear clamping device. The computer controller calculates the length of the fabric in the free state, sets the fabric stretch multiple according to the fabric type, and calculates the fabric's fixed elongation. After the automatic adjustment and control load weight module receives the constant elongation load demand from the computer controller, it controls the motor to drive the screw module to move, and then drives the counterweight block to move. The distance sensor feeds back the real-time movement distance of the counterweight block, and combines the angle sensor and the constant elongation load loading roller to convert the actual constant elongation load acting on the fabric.

[0013] Furthermore, the conversion formula for the constant elongation load force actually acting on the fabric is:

[0014] Where, is the actual constant elongation load acting on the fabric, In order to automatically adjust and control the load weight module, the fixed extension load force loads the overall weight of the roller around the bearing. is the lever length from the counterweight to the force application point, is the angle detected by the angle sensor.

[0015] Compared with the prior art, the present invention can at least achieve the following beneficial effects: The present invention can simultaneously detect and calibrate the fixed elongation and fixed elongation load of one or more high-elastic fabrics of the same specifications, and can automatically adjust the load weight of the continuous dyeing machine on the fabric through the automatic adjustment control load weight module based on the detection calibration data, so that the fixed elongation load can be accurately controlled during the dyeing of the fabric, thereby ensuring the elastic recovery rate of the fabric and the quality of dyeing, and improving the efficiency and economic benefits of fabric dyeing. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the overall structure of the online detection and control system for the elastic recovery rate of fabric stretch provided by an embodiment of the present invention.

[0016] Figure 2 2 is a schematic structural diagram of a constant elongation load force detection and calibration module in an embodiment of the present invention.

[0017] Figure 32 is a schematic diagram of the structure of the automatic adjustment and control load weight module in an embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of the arrangement of the automatic adjustment and control load weight module and the fixed elongation load force loading roller in an embodiment of the present invention.

[0019] Figure 5 2 is a schematic structural diagram of the front clamping device in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 An embodiment of the present invention provides an online detection and control system for the tensile elastic recovery rate of a high-extensibility, high-resilience synthetic fiber fabric. The system comprises a computer controller 1, a constant elongation load detection and calibration module 2, an automatic adjustment and control load weight module 3, and a constant elongation load pressure roller 5. Both the automatic adjustment and control load weight module 3 and the constant elongation load pressure roller 5 are mounted on a continuous dyeing machine 4. The constant elongation load detection and calibration module 2 is located at the fabric output end of the continuous dyeing machine 4. When the fabric passes through the constant elongation load detection and calibration module 2, the constant elongation load is automatically detected as a target value.

[0022] In one embodiment of the present invention, see Figure 2 The fixed elongation load force detection and calibration module 2 includes a front frame 201, a rear frame 213, a swing frame 202, a front clamping device 203, a rear clamping device 214, a weight sensor 204, an automated grating 205, a first guide rail 206, a stretching cylinder 207, an upper frame 208, an electric cylinder device 209, a lower frame 210, a second guide rail 211, and a base frame 212.

[0023] The front frame 201 and the rear frame 213 are arranged opposite to each other, and the swing frame 202 is rotatably connected to the front frame 201 through a bearing. The front clamping device 203 is fixed on the swing frame 202, so that the front clamping device 203 can be swung on the front frame 201 through the swing frame 202, so that when the fabric is tightened, the front clamping device 203 is driven to swing in the direction of fabric travel, thereby pressing the weight sensor 204 to detect the constant elongation load force of the fabric.

[0024] The front frame 201 is fixed to the lower frame 210 by bolts. The lower frame 210 is slidably arranged on the second guide rail 211 . The front frame 201 moves along with the forward and backward movement of the lower frame 210 .

[0025] The rear clamping device 214 is fixed on the rear frame 213, the rear frame 213 is connected to the upper frame 208, the upper frame 208 is slidably set on the first guide rail 206, and the first guide rail 206 is fixed on the lower frame 210; the fixing seat of the electric cylinder device 209 is fixed to the upper frame 208 by bolts, and the output end of the electric cylinder device 209, that is, the pull rod, is connected to the front frame 201. The rear frame 213, the rear clamping device 214, and the upper frame 208 are driven by the electric cylinder device 209 to move back and forth along the first guide rail 206 fixed to the lower frame 210, so as to shorten the distance between the rear clamping device 214 and the front clamping device 203, so that the fabric between the rear clamping device 214 and the front clamping device 203 naturally droops.

[0026] The electric cylinder device 209 includes a motor, a gear, a screw nut and a pull rod. The rotation of the motor drives the gear to drive the pull rod to move.

[0027] The mounting base of the stretching cylinder 207 is bolted to the base frame 212. The stretching rod of the stretching cylinder 207 is connected to the lower frame 210. The extension and retraction of the stretching cylinder 207 allows the front frame 201, swing frame 202, front clamping device 203, rear frame 213, weight sensor 204, upper frame 208, and first guide rail 206, located on the lower frame 210, to move back and forth along the second guide rail 211 fixed to the base frame 212. The signal transmitter and signal receiver of the automated light barrier 205, respectively fixed to the front frame 201 and rear frame 213, move accordingly. The automated light barrier 205 serves as a detection point for calculating the length of the fabric in a free state between the front clamping device 203 and the rear clamping device 214. By driving the movement through the stretching cylinder 207, the high-elastic fabric at the front end of the constant elongation load force detection and calibration module 2 can be placed in a relaxed state, eliminating the tension generated by the high-elastic fabric during operation from acting on the swing frame 202, thereby placing the swing frame 202 in a free state and eliminating the influence of the high-elastic fabric load force outside the module.

[0028] See also Figure 5The front clamping device 203 includes a cylinder assembly 20301, a pressure beam assembly 20302, an upper die 20303, and a lower die 20304. One end of the cylinder assembly 20301 is fixed to the swing frame 202 by a bolt, and the cylinder telescopic rod at the other end is connected to the pressure beam assembly 20302. The slot of the upper die 20303 matches the buckle of the pressure beam assembly 20302 and is fixed. The lower die 20304 is fixed to the swing frame 202. The lower die 20304 and the upper die 20303 are arranged opposite each other. The expansion and contraction of the cylinder telescopic rod of the cylinder assembly 20301 causes the pressure beam assembly 20302 to drive the upper die 20303 to move up and down, thereby achieving the fitting, pressing, and separation between the upper die 20303 and the lower die 20304. The rear clamping device 214 has the same structure as the front clamping device 203, but the rear clamping device 214 is installed on the rear frame 213, while the front clamping device 203 is fixed on the swing frame 202. The swing frame 202 is connected to the front frame 201 through a bearing, so that the front clamping device 203 can swing.

[0029] A weight sensor 204 is fixed to the front frame 201 and is used to detect the calibrated constant elongation load. When the fabric is tightened, it drives the front clamping device 203 to swing in the direction of fabric travel, causing the top ball on the swing frame 3 to press against the weight sensor 204, which then detects the fabric constant elongation load.

[0030] In one embodiment of the present invention, see Figure 3 The automatic adjustment and control load weight module 3 includes a distance sensor 301, a control motor 302, a screw module 303, a counterweight 304, and an angle sensor 305. The output end of the control motor 302 is connected to the screw module 303, and the counterweight 304 is mounted on the screw module 303. The control motor 302 drives the screw module 303 to move, thereby driving the counterweight 304 to move. The distance sensor 301 is used to provide feedback on the real-time movement distance of the counterweight 304. In combination with the angle sensor 305 and the constant elongation load roller 5, the computer controller 1 calculates the actual constant elongation load applied using a formula. The angle sensor 305 detects the angle between the horizontal and the rotation of the constant elongation load roller 5 around the bearing after the counterweight 304 moves, and is used to calculate the torque to ensure that the force applied by the constant elongation load roller 5 on the fabric complies with the instructions given by the computer controller 1 and maintains a constant force. The counterweight block 304 in the load weight module 3 is automatically adjusted to move, thereby driving the constant elongation load force loading roller 5 to swing up and down, thereby adjusting the constant elongation load force acting on the fabric.

[0031] The constant elongation load force is the constant elongation load force applied to the fabric by the designated elongation load loading roller 5. This can be achieved by adjusting the downward pressure applied by the constant elongation load loading roller 5. The constant elongation load force applied to the fabric will be different depending on the angle of inclination (with respect to the horizontal) of the constant elongation load loading roller 5 when it is pressed downward.

[0032] The constant elongation load-loading roller 5 is tilted to generate a load force on the fabric. The more the constant elongation load-loading roller 5 is pressed downward (the greater the angle with the horizontal), the greater the constant elongation load force applied to the fabric, and vice versa.

[0033] In one embodiment of the present invention, see Figure 1 On the continuous dyeing machine 4 and corresponding to each dyeing tank, an automatic adjustment and control load weight module 3 and a fixed elongation load force loading roller 5 are provided. The automatic adjustment and control load weight module 3 and the fixed elongation load force loading roller 5 are matched with each other.

[0034] In one embodiment of the present invention, see Figure 4 In each set of automatically adjustable load weight control module 3 and constant elongation load force loading roller 5, the automatically adjustable load weight control module 3 is fixed to the support arm on one side of the constant elongation load force loading roller 5 by bolts, and the combination is formed into a whole, and is assembled on the continuous dyeing machine 4 through bearings, so that the automatically adjustable load weight control module 3 and the constant elongation load force loading roller 5 can swing up and down around the bearings in the continuous dyeing machine 4.

[0035] The online detection and control method of fabric tensile elastic recovery rate includes the following steps: When elastic fabrics, ropes, webbings and other fabrics made of synthetic fibers with high extensibility and high resilience are dyed in the continuous dyeing machine 4, the high-elastic fabric is clamped by the front clamping device 203 and the rear clamping device 214; the stretching cylinder 207 drives the entire system except the base frame 12 to move along the second guide rail 11 toward the front frame 201, so that the high-elastic fabric at the front end of the system is in a relaxed state, eliminating the tension generated by the high-elastic fabric during operation on the swing frame 202, thereby making the swing frame 202 in a free state, eliminating the influence of the load force of the high-elastic fabric outside the system; the front clamping device 203 and the rear clamping device 209 are driven to reduce the tension. The distance between the two clamps 14 is recorded. When the fabric naturally droops and touches the detection point of the automated grating 205, the arch height h of the fabric in the arc state and the chord length L between the front clamping device 203 and the rear clamping device 214 (the distance between the front and rear clamping devices) can be calculated by the preset distance between the detection point of the automated grating 205 and the lower die plane of the front clamping device 203. The computer controller 1 in the system calculates the length of the fabric in the free state (the length of the fabric in the free state is the length of the fabric between the front and rear clamping devices when it is not under tension) through a formula. The fabric stretch factor is set based on the fabric type to obtain the fixed stretch length of the fabric. In one embodiment of the present invention, the length of the fabric in the free state is 100 mm. According to process requirements, the fabric needs to be stretched 1.05 times for dyeing to ensure elastic recovery. The fixed stretch length of the fabric is 100 x 1.05 = 105 mm.

[0036]

[0037] Where, represents the arc length, i.e. the length of the fabric in the free state, represents the chord length, Indicates arch height.

[0038] After receiving the constant elongation load demand from the computer controller 1, all the automatic adjustment and control load weight modules 3 set on the continuous dyeing machine 4 drive the screw module 303 to move by controlling the motor 302, and then drive the counterweight block 304 to move. The distance sensor 301 feeds back the real-time movement distance of the counterweight block 304, and combines the angle sensor 305 and the constant elongation load loading roller 5 to convert the actual constant elongation load acting on the fabric, thereby realizing reasonable and accurate control of the fabric tensile elastic recovery rate in all functional modules of the continuous dyeing machine 4.

[0039]

[0040] Where, is the moment, is the actual constant elongation load acting on the fabric, The counterweight system automatically adjusts and controls the load weight module 3 and the fixed elongation load force to load the entire weight of the roller 5 that swings up and down around the bearing (the weight of the entire original state is the reference weight set when the equipment is designed). is the lever length from the counterweight 304 to the force application point, is the angle detected by the angle sensor.

[0041] When working, it can simultaneously detect and calibrate the fixed elongation distance and fixed elongation load of one or more high-elastic fabrics of the same specifications, and calculate the detection calibration data through the system. The fixed elongation load required by the fabric is automatically adjusted by the load weight module 3 to automatically adjust the load weight of the fixed elongation load pressure roller 5 on the fabric (the position is as shown in the figure). Figure 4 As shown, the automatic adjustment and control load weight module 3 and the constant elongation load force loading roller 5 are combined into a whole and assembled on the continuous dyeing machine 4 through bearings at both ends, thereby realizing the automatic adjustment and control load weight module 3, and the constant elongation load force loading roller 5 swinging up and down around the bearings, so that the force applied by the constant elongation load force loading roller 5 on the fabric meets the requirements given by the computer controller 1, so that the tensile elastic recovery rate of the fabric is constant, and the constant elongation load force of the fabric can be accurately controlled during dyeing, thereby ensuring the elastic recovery rate of the fabric and the quality of dyeing.

[0042] The control system and control method of the embodiment of the present invention have simple principles and are easy to implement. They can effectively solve the problem of inconsistent tensile elastic recovery rates of high-elastic fabrics after dyeing, and at the same time achieve consistent tensile elastic recovery rates of different batches of fabrics after dyeing, thereby improving the efficiency and economic benefits of fabric dyeing.

[0043] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Fabric stretch elastic recovery rate online detection and control system, characterized by: It includes a computer controller, a constant elongation load force detection and calibration module, an automatic adjustment and control load weight module and a constant elongation load force loading roller; The computer controller is used to issue the fixed elongation load force requirement and to calculate the fixed elongation of the fabric; An automatic adjustment and control load weight module and a constant elongation load force loading roller are provided as a set and are used for swinging on a continuous dyeing machine. The constant elongation load force applied by the constant elongation load force loading roller on the fabric is adjusted by swinging the automatic adjustment and control load weight module and the constant elongation load force loading roller. The fixed elongation load force detection and calibration module is used to be arranged at the output end of the continuous dyeing machine.

2. The fabric tensile elastic recovery rate online detection and control system according to claim 1, characterized in that: The fixed elongation load force detection and calibration module includes a chassis, a front frame, a rear frame, a front clamping device, a rear clamping device, a weight sensor and an automated grating; The front frame and the rear frame are arranged opposite to each other and are movably arranged on the base frame; The front clamping device is swingably mounted on the front frame, and the rear clamping device is fixedly mounted on the rear frame, and the distance between the front clamping device and the rear clamping device is adjustable; The weight sensor is arranged on the front frame; The signal transmitting end and the signal receiving end of the automation light barrier are fixed on the front frame and the rear frame respectively.

3. The fabric tensile elastic recovery rate online detection and control system according to claim 2, characterized in that: The fixed elongation load force detection and calibration module also includes an upper frame, a first guide rail and a lower frame. The rear frame is arranged on the upper frame, and the upper frame is slidably arranged on the first guide rail. The distance between the front clamping device and the rear clamping device is adjusted by sliding the upper frame; the first guide rail is arranged on the lower frame, and the lower frame is slidably arranged on the base frame, and the front frame is arranged on the lower frame.

4. The fabric tensile elastic recovery rate online detection and control system according to claim 2, characterized in that: The fixed elongation load force detection and calibration module also includes an electric cylinder device, and the pull rod of the electric cylinder device is connected to the upper frame.

5. The fabric tensile elastic recovery rate online detection and control system according to claim 2, characterized in that: The fixed elongation load force detection and calibration module also includes a stretching cylinder, and the output end of the stretching cylinder is connected to the lower frame.

6. The fabric tensile elastic recovery rate online detection and control system according to claim 2, characterized in that: The front clamping device and the rear clamping device both include a cylinder assembly, a pressure beam assembly, an upper die and a lower die. The output end of the cylinder assembly is connected to the pressure beam assembly. The upper die and the lower die are arranged opposite to each other, and the upper die is connected to the pressure beam assembly. The fitting, pressing and separation between the die and the lower die are achieved by the drive of the cylinder assembly.

7. The online detection and control system for fabric tensile elastic recovery rate according to any one of claims 1 to 6, characterized in that: The automatic adjustment and control load weight module is connected to one side of the fixed elongation load force loading roller to form a whole, and the connected whole is arranged on the continuous dyeing machine through a bearing.

8. The fabric tensile elastic recovery rate online detection and control system according to claim 7, characterized in that: The automatic adjustment and control load weight module includes a control motor, a screw module, a counterweight, a distance sensor and an angle sensor. The screw module is connected to the control motor, and the counterweight is movably set on the screw module. The distance sensor is used to detect the real-time movement distance of the counterweight. The angle sensor is used to detect the angle between the automatic adjustment control load weight module and the fixed elongation load force loading roller after the counterweight moves and the horizontal.

9. The online detection and control method of fabric tensile elastic recovery rate is characterized by: Using the system of claim 8, the method comprises the following steps: When the fabric is dyed in the continuous dyeing machine, the fabric is clamped by the front clamping device and the rear clamping device; The front frame and the rear frame are moved toward the front frame as a whole, and the front clamping device and the rear clamping device move accordingly, so that the fabric at the front end of the system is in a relaxed state; Adjust the distance between the front clamping device and the rear clamping device. When the fabric naturally droops and touches the automated grating detection point, the distance between the preset automated grating detection point and the lower die plane in the front clamping device is used to calculate the arch height h of the fabric in the arc state, as well as the chord length between the front clamping device and the rear clamping device. The computer controller calculates the length of the fabric in the free state, sets the fabric stretch multiple based on the fabric type, and calculates the fabric's fixed elongation. After the automatic adjustment and control load weight module receives the constant elongation load demand from the computer controller, it controls the motor to drive the screw module to move, and then drives the counterweight block to move. The distance sensor feeds back the real-time movement distance of the counterweight block, and combines the angle sensor and the constant elongation load loading roller to convert the actual constant elongation load acting on the fabric.

10. The online detection and control method for fabric tensile elastic recovery rate according to claim 9, characterized in that: The conversion formula for the constant elongation load force actually acting on the fabric is: Where, is the actual constant elongation load acting on the fabric, In order to automatically adjust and control the load weight module, the fixed extension load force loads the overall weight of the roller around the bearing. is the lever length from the counterweight to the force application point, is the angle detected by the angle sensor.

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