Synthetic fiber fabric fixed elongation load force detection and calibration system and control method thereof

Abstract

The invention discloses a synthetic fiber fabric fixed elongation load force detection and calibration system and a control method thereof. The system comprises a bottom frame, a front rack, a rear rack, a front clamping device, a rear clamping device, a weight sensor and an automatic grating. The front machine frame and the rear machine frame are oppositely arranged and are movably arranged on the bottom frame. The front clamping device is arranged on the front rack in a swinging mode, the rear clamping device is fixedly arranged on the rear rack, and the distance between the front clamping device and the rear clamping device is adjustable. The weight sensor is arranged on the front rack; and a signal transmitting end and a signal receiving end of the automatic grating are respectively fixed on the front rack and the rear rack. According to the method, the fixed elongation load force of the synthetic fiber fabric with high extensibility and high rebound resilience can be detected and calibrated, so that the fixed elongation load force is reasonably controlled when the fabric is dyed, and the dyeing quality of the fabric is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of dyeing machinery, and particularly relates to a synthetic fiber fabric fixed elongation load force detection and calibration system and a control method thereof. Background Art

[0002] Currently, various specifications of stretch fabrics, such as tapes, ropes, and webbings, made from highly elongated and resilient synthetic fibers, 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] Currently, the traditional dyeing industry calibrates the elongation load manually based on feel and experience. Without precise measurement and quantitative data, it's impossible to determine the appropriate elongation load required for a fabric's elastic recovery. If the elongation load is too high, stretch fabrics permanently set in the high temperatures of the dyeing process, resulting in a decrease in elasticity or even loss of elasticity. If the elongation load is too low, stretch fabrics can experience problems such as uneven running, banding, wrinkles, and wrinkles during the dyeing process. Furthermore, the fabric may shrink after dyeing, severely impacting dyeing quality and stability. Summary of the Invention

[0004] In order to solve at least one of the problems existing in the prior art, the present invention provides a synthetic fiber fabric fixed elongation load force detection and calibration system and a control method thereof, which can detect and calibrate the fixed elongation load force of synthetic fiber fabrics with high extensibility and high resilience, so that the fixed elongation load force of the fabric can be reasonably controlled during dyeing, thereby ensuring the quality of fabric dyeing and improving the efficiency and economic benefits of fabric dyeing.

[0005] In order to achieve the purpose of the present invention, the present invention provides a synthetic fiber fabric fixed elongation load force detection and calibration system, which includes a chassis, a front frame, a rear frame, a front clamping device, a rear clamping device, a weight sensor and an automated grating;

[0006] The front frame and the rear frame are arranged opposite to each other and are movably arranged on the base frame;

[0007] The front clamping device is swingably arranged on the front frame, and the rear clamping device is fixedly arranged on the rear frame, and the distance between the front clamping device and the rear clamping device is adjustable;

[0008] The weight sensor is arranged on the front frame;

[0009] The signal transmitting end and the signal receiving end of the automation grating are fixed on the front frame and the rear frame respectively.

[0010] Furthermore, the system 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.

[0011] Furthermore, the system also includes an electric cylinder device, and the pull rod of the electric cylinder device is connected to the upper frame.

[0012] Furthermore, the system also includes a stretching cylinder, and the output end of the stretching cylinder is connected to the lower frame.

[0013] Furthermore, the system further comprises a second guide rail, which is arranged on the base frame, and the lower frame is slidably arranged on the base frame via the second guide rail.

[0014] 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 upper die and the lower die are achieved by driving the cylinder assembly.

[0015] Furthermore, a slot is provided in the upper pressing die, and a buckle that cooperates with the slot is provided in the pressure beam assembly.

[0016] Furthermore, it also includes a swing frame, which is swingably arranged on the front frame, and the front clamping device is arranged on the swing frame.

[0017] Furthermore, a top ball is provided on the swing frame, which can drive the front swing frame to swing in the direction of fabric travel when the fabric is tightened, thereby tightening the weight sensor.

[0018] The present invention provides a method for detecting and controlling the constant elongation load force of synthetic fiber fabrics, comprising the steps of:

[0019] When the fabric passes through the system, it is clamped by the front clamping device and the rear clamping device;

[0020] 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;

[0021] 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 of the front clamping device is used to calculate the arch height of the fabric in the arc state, as well as the chord length between the front clamping device and the rear clamping device. The length of the fabric in the free state is calculated using a formula. The fabric stretch multiple is set according to the fabric type to obtain the fabric's fixed elongation.

[0022] The distance between the front clamping device and the rear clamping device is controlled to reach the set fixed extension length. Driven by the reaction force of the fabric stretched between the front clamping device and the rear clamping device, the swing frame swings along the fabric toward the traveling machine, thereby pressing the weight sensor. The fixed extension load force is detected by the weight sensor.

[0023] Compared with the prior art, the present invention can at least achieve the following beneficial effects:

[0024] The present invention can simultaneously detect and calibrate the constant elongation length and constant elongation load of one or more high-elastic fabrics of the same specifications, and is suitable for industrial application in laboratories and production site equipment. It solves the problem that the constant elongation load in the traditional dyeing industry is manually detected and calibrated based on feel and experience. Due to the lack of accurate detection and quantitative data, it is impossible to determine the appropriate constant elongation load required for the elastic recovery rate of the fabric. When the constant elongation load is too large, the elastic fabric is permanently set under high temperature conditions during the dyeing process, resulting in a decrease in elasticity or even loss of elasticity. When the constant elongation load is too small, the elastic fabric will experience problems such as uneven machine operation and banding during the dyeing process, as well as wrinkles and wrinkles. In addition, the fabric will shrink after dyeing, seriously affecting the dyeing quality and stability of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0026] Figure 1 It is a schematic diagram of the overall structure of a synthetic fiber fabric fixed elongation load force detection and calibration system provided by an embodiment of the present invention.

[0027] Figure 2 2 is a schematic structural diagram of the front clamping device in an embodiment of the present invention.

[0028] Figure 3 2 is a structural diagram from another perspective of the synthetic fiber fabric fixed elongation load force detection and calibration system in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] 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.

[0030] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. The directions or positional relationships indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0031] See also Figure 1 The embodiment of the present invention provides a fixed elongation load force detection and calibration system for synthetic fiber fabrics with high extensibility and high resilience, including a front frame 2, a swing frame 3, a front clamping device 4, a rear frame 5, a weight sensor 6, an automated grating 7, an upper frame 8, a first guide rail 9, a lower frame 10, a second guide rail 11, a base frame 12, an electric cylinder device 13, a stretching cylinder 14, and a rear clamping device 15.

[0032] The front clamping device 4 is fixed to the swing frame 3, which is connected to the front frame 2 via a bearing. This allows the front clamping device 4 to swing on the front frame 2 via the swing frame 3. When the fabric is tightened, the front clamping device 4 is driven to swing in the fabric travel direction, thereby pressing against the weight sensor 6 to detect the fabric's constant elongation load. The rear clamping device 15 is fixed to the rear frame 5. The front frame 2 and the rear frame 5 are arranged relative to each other and are movably mounted on the base frame 12 as a whole.

[0033] The weight sensor 6 is fixed to the front frame 2 and is used to detect the calibrated elongation load force. The front frame 2 is fixed to the lower frame 10 by bolts and moves forward and backward with the lower frame 10. The lower frame 10 is slidably set on the second guide rail 11, and the second guide rail 11 is set on the base frame 12.

[0034] In one embodiment of the present invention, the rear clamping device 15 is fixed to the rear frame 5 and integrally connected to the upper frame 8, and then slidably disposed on the first guide rail 9, which is disposed on the lower frame 10. The fixing base of the electric cylinder device 13 is fixed to the upper frame 8 by bolts, and the pull rod of the electric cylinder device 13 is connected to the front frame 2. The rear clamping device 15, the rear frame 5, and the upper frame 8 are driven by the electric cylinder device 13 to move back and forth along the first guide rail 9 fixed to the lower frame 10. The electric cylinder device 209 includes a motor (servo motor or variable frequency control motor), gears, a screw nut, and a pull rod. The rotation of the motor drives the gear to drive the pull rod to move.

[0035] In one embodiment of the present invention, the fixing seat of the stretching cylinder 14 is bolted and fixed to the base frame 12, and the output end, i.e., the cylinder stretching rod, is connected to the lower frame 10. The front frame 2, the swing frame 3, the front clamping device 4, the rear frame 5, the weight sensor 6, the upper frame 8, and the first guide rail 9 located on the lower frame 10 can be extended and retracted by the stretching cylinder 14 to move back and forth along the second guide rail 11 fixed to the base frame 12 along with the lower frame 10. The signal transmitting end and the signal receiving end of the automation grating 7 are respectively fixed on the front frame 2 and the rear frame 5, and move accordingly.

[0036] In one embodiment of the present invention, see Figure 2 The front clamping device 4 and the rear clamping device 15 each include a cylinder assembly 401, a pressure beam assembly 402, an upper die 403, and a lower die 404. One end of the cylinder assembly 401 is fixed to the rear frame 5 or the swing frame 3 with bolts, a cylinder telescopic rod is connected to the pressure beam assembly 402, a slot is provided on the upper die 403, a buckle is provided on the pressure beam assembly 402, the slot of the upper die 403 matches and is fixed with the buckle of the pressure beam assembly 402, the lower die 404 is fixed to the rear frame 5 or the swing frame 3, the lower die 404 and the upper die 403 are arranged relative to each other, and the pressure beam assembly 402 drives the upper die 403 to move up and down through the expansion and contraction of the cylinder assembly 401, thereby realizing the fitting, pressing, and separation between the upper die 403 and the lower die 404.

[0037] In one embodiment of the present invention, a method for detecting and calibrating a constant elongation load force of a synthetic fiber fabric is provided, comprising the following steps:

[0038] When a high-elastic fabric 1 such as an elastic cloth tape, rope tape, or webbing made of synthetic fibers having high extensibility and high resilience passes through the calibration system, the high-elastic fabric 1 is clamped by the front clamping device 4 in the front frame 2 and the rear clamping device 15 in the rear frame 5; the stretching cylinder 14 installed on the lower frame 10 drives the entire body except the base frame 12 to move toward the front frame 2 along the second guide rail 11, so that the high-elastic fabric at the front end A of the calibration system is in a relaxed state, eliminating the tension generated by the high-elastic fabric during operation from acting on the swing frame 3, thereby allowing the swing frame 3 to be in a free state and eliminating the influence of the load force of the high-elastic fabric outside the system;

[0039] The upper frame 8 and the rear clamping device 15 and the rear frame 5 are driven by the electric cylinder device 13 to move toward the front frame 2 along the first guide rail 9 fixed on the lower frame 10, thereby reducing the distance between the front clamping device 4 and the rear clamping device 15, and recording the distance length. When the fabric naturally droops and touches the detection point of the automated grating 7, the arch height h of the fabric in the arc state and the chord length L between the front clamping device 4 and the rear clamping device 15 are obtained by the preset distance between the detection point of the automated grating 7 and the plane of the lower die 404 in the front clamping device 4. The controller calculates the length of the fabric in the free state (the length of the fabric between the front and rear clamping devices when not under tension) through a formula, sets the fabric stretching multiple according to the type of fabric, and obtains the fixed elongation of the fabric. In one embodiment of the present invention, the length of the fabric in a free state is 100 mm. According to process requirements, the fabric needs to be stretched 1.05 times for dyeing to ensure elastic recovery, so the fixed elongation length of the fabric is 100X1.05=105MM.

[0040]

[0041] Where S is the arc length, i.e. the length of the fabric in the free state, L is the chord length, and h is the arch height.

[0042] Then, the electric cylinder device 13 is used to control the distance between the front clamping device 4 and the rear clamping device 15 to reach the set fixed extension length. At this time, the swing frame 3 will swing along the fabric machine direction under the reaction force of the fabric stretched between the front clamping device 4 and the rear clamping device 15, so that the top ball on the swing frame 3 presses against the weight sensor 6, and the fixed extension load force is detected by the weight sensor 6.

[0043] Users can set the controller to calculate the theoretical extension percentage of high-elastic fabrics and calibrate the constant elongation load required for the fabric in the dyeing process.

[0044] When the system of the embodiment of the present invention is working, the highly elastic fabric will be clamped in the front clamping device 4 and the rear clamping device 15, and then the electric cylinder device 13 is used to control the distance between the front and rear clamping devices to be reduced and the length of the distance is recorded. When the fabric naturally droops and touches the detection point, the system calculates the length of the fabric in the free state based on the chord length and arch height (the chord length is the distance between the front and rear clamping devices, and the arch height is the height from the lower die of the clamping device to the monitoring point of the automated grating 7), and calculates the theoretical extension percentage of the fabric according to the length of the fabric in the free state. Then, the electric cylinder device 13 is used to control the distance between the front and rear clamping devices to reach the percentage distance of the theoretical extension or process requirements, and the constant elongation load force is detected and calibrated by the weight sensor, and the constant elongation load force data is accurately obtained to improve the quality of the fabric in subsequent dyeing and finishing processes.

[0045] This device can be applied to laboratory and production site equipment according to process requirements. It can detect and calibrate the constant elongation load of stretch fabrics of different materials and quantities online, which can significantly improve the quality of the fabric in the subsequent printing and dyeing process, and improve the efficiency and economic benefits of fabric dyeing.

[0046] 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. Synthetic fiber fabric fixed elongation load force detection and calibration system, characterized by: It 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.

2. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 1, characterized in that: The system 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.

3. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 1, characterized in that: The system also includes an electric cylinder device, and the pull rod of the electric cylinder device is connected to the upper frame.

4. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 1, characterized in that: The system further comprises a stretching cylinder, the output end of which is connected to the lower frame.

5. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 1, characterized in that: The system further comprises a second guide rail, which is arranged on the base frame, and the lower frame is slidably arranged on the base frame via the second guide rail.

6. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 1, 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 synthetic fiber fabric constant elongation load force detection and calibration system according to claim 6, characterized in that: A card slot is provided in the upper pressing die, and a buckle matched with the card slot is provided in the pressure beam assembly.

8. The synthetic fiber fabric constant elongation load force detection and calibration system according to any one of claims 1 to 7, characterized in that: The utility model also comprises a swing frame, which is swingably arranged on the front frame, and a front clamping device is arranged on the swing frame.

9. The synthetic fiber fabric constant elongation load force detection and calibration system according to claim 8, characterized in that: A top ball is provided on the swing frame, which can drive the swing frame to swing in the direction of fabric travel when the fabric is tightened, thereby tightening the weight sensor.

10. A method for detecting and controlling the constant elongation load of synthetic fiber fabrics, characterized in that: Using the system of claim 9, the method comprises the steps of: When the fabric passes through the system, it 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 of the front clamping device is used to calculate the arch height of the fabric in the arc state, as well as the chord length between the front clamping device and the rear clamping device. The length of the fabric in the free state is calculated using a formula. The fabric stretch multiple is set according to the fabric type to obtain the fabric's fixed elongation. The distance between the front clamping device and the rear clamping device is controlled to reach the set fixed extension length. Driven by the reaction force of the fabric stretched between the front clamping device and the rear clamping device, the swing frame swings along the fabric toward the traveling machine, thereby pressing the weight sensor. The fixed extension load force is detected by the weight sensor.

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