A fiber reel unwinding device and carbon fiber production system

Abstract

The embodiment of the application provides a fiber reel unwinding device and a carbon fiber production system, and relates to the field of carbon fiber production equipment. The unwinding roller in the fiber reel unwinding device is rotatably arranged on the equipment rack and is used for mounting a fiber shaft for providing fibers; the winding shaft is rotatably arranged on the equipment rack and is used for receiving the fibers provided by the fiber shaft and winding the fibers into a shaft; the driving device is mounted on the equipment rack and is connected with the winding shaft and is used for driving the winding shaft to rotate; the PLC controller is connected with the driving device and is used for controlling the rotating speed of the driving device; the rotary encoder is used for collecting the number of revolutions of the unwinding roller in real time, the laser range finder is used for dynamically scanning the diameter change of the winding shaft, and the PLC controller is used for calculating the fiber length deviation value received by the winding shaft according to the signals of the rotary encoder and the laser range finder. The fiber reel unwinding device and the carbon fiber production system of the embodiment of the application realize automatic and rapid unwinding of fibers and automatic detection of length deviation, and improve the production efficiency and the product quality.

Description

Technical Field

[0001] This application relates to the field of carbon fiber production equipment, and more specifically, to a fiber roll unwinding device and a carbon fiber production system. Background Technology

[0002] In the textile industry, fiber winding and unwinding are indispensable steps in the production process. Traditional fiber winding and unwinding equipment mostly uses semi-automatic equipment, which is inefficient and prone to problems such as fiber breakage or uneven winding. Furthermore, existing semi-automatic unwinding equipment lacks intelligent detection and control functions during the unwinding process. It typically relies on manual segmented measurement and subsequent weighing to calculate the length deviation of the wound fibers. However, manual segmented measurement or subsequent weighing is inefficient and prone to large errors (generally ≥5%), impacting production efficiency and product quality. Moreover, existing unwinding equipment cannot monitor fiber length deviation in real time, making quality traceability and process optimization difficult.

[0003] Therefore, there is an urgent need for equipment that can automatically and quickly unwind fibers and automatically detect length deviations in order to improve production efficiency and product quality. Utility Model Content

[0004] The purpose of this application is to provide a fiber roll unwinding device and a carbon fiber production system, which realizes automatic and rapid unwinding of fibers and automatic detection of length deviation, thereby improving production efficiency and product quality.

[0005] In a first aspect, embodiments of this application provide a fiber roll unwinding device, comprising: Equipment rack; An unwinding roller, rotatably mounted on the equipment frame, is used to mount a fiber shaft that provides fibers; A winding shaft is rotatably mounted on the equipment frame for receiving fibers provided by the fiber shaft and winding them into a shaft, and the fibers from the fiber shaft to the winding shaft form an unwinding path; A drive device, which is mounted on the equipment frame and connected to the winding shaft, is used to drive the winding shaft to rotate; The control system includes a PLC controller, a rotary encoder, and a laser rangefinder. The PLC controller is connected to the drive device and is used to control the rotational speed of the drive device. The rotary encoder is set on the equipment frame at a position corresponding to the unwinding roller and is used to collect the rotational speed of the unwinding roller in real time. The laser rangefinder is set on the equipment frame at a position corresponding to the winding shaft and is used to dynamically scan the diameter change of the winding shaft. The PLC controller is connected to both the rotary encoder and the laser rangefinder and is used to calculate the fiber length deviation value received by the winding shaft based on the signals from the rotary encoder and the laser rangefinder.

[0006] In the above implementation process, the PLC controller is connected to the drive device, which can intelligently control the operation of the drive device, thereby controlling the rotation speed of the winding shaft and realizing automatic and rapid unwinding of the fiber, significantly improving production efficiency. The PLC controller is also connected to a rotary encoder and a laser rangefinder. The rotary encoder is used to collect the rotation speed of the unwinding roller in real time, and combined with the laser rangefinder to dynamically scan the diameter change of the winding shaft, the fiber length on the winding shaft is calculated. The difference between this length and the preset theoretical length is the length deviation. Therefore, the fiber unwinding device of this application embodiment realizes automatic and rapid unwinding of the fiber and automatic detection of length deviation, improving production efficiency and product quality.

[0007] In one possible implementation, the drive device includes a servo motor and a frequency converter, the servo motor being connected to the winding shaft via the frequency converter.

[0008] In the above process, the drive device achieves precise control of the winding shaft speed and the frequency converter achieves stepless adjustment of the unwinding speed.

[0009] In one possible implementation, it further includes a tension sensor disposed on the equipment frame and facing the unwinding path, for detecting the tension of the fibers on the unwinding path; the PLC controller is connected to the tension sensor and is used to control the rotational speed of the drive device based on the signal from the tension sensor.

[0010] In the above implementation process, the fiber tension is monitored in real time by a tension sensor, and the PLC controller is used to receive the signal from the tension sensor and control the operation of the drive device to ensure uniform tension during fiber unwinding, avoid fiber breakage or uneven winding, and thus improve product quality.

[0011] In one possible implementation, the tension sensor is a fiber optic tension sensor.

[0012] In the above implementation process, the fiber optic tension sensor has high sensitivity and fast response characteristics, and can monitor the tension changes of the fiber in real time.

[0013] In one possible implementation, it further includes a fixing device, which is fixedly connected to the drive end of the drive device and clamps and fixes one end of the winding shaft.

[0014] In one possible implementation, the fixing device includes pneumatic grippers for detachable fixing of the winding shaft.

[0015] In the above implementation process, pneumatic grippers are used to automatically clamp and release the winding shaft, supporting quick replacement of winding shafts of different diameters.

[0016] In one possible implementation, the fixing device further includes a V-shaped positioning block for positioning the direction of the winding shaft.

[0017] In one possible implementation, it further includes an emergency braking device connected to the PLC controller, which controls the rotational speed of the drive device based on a signal from the emergency braking device.

[0018] During the above implementation process, an emergency braking device is provided to ensure the safe operation of the equipment and avoid accidents.

[0019] In one possible implementation, the emergency braking device includes an infrared beam sensor mounted on the equipment frame and facing the unwinding path, for detecting fiber abnormalities on the unwinding path.

[0020] In the above implementation process, the infrared beam sensor is used to detect abnormal situations such as wire breakage. Once an emergency braking protection is triggered, the control system controls the drive device to stop operating based on the signal from the infrared beam sensor to avoid accidents.

[0021] In one possible implementation, there are multiple winding shafts arranged in layers from bottom to top on the equipment frame, and each winding shaft is connected to a corresponding drive device.

[0022] During the above process, multi-axial fibers are simultaneously unwound.

[0023] In one possible implementation, it further includes a guide roller disposed on the unwinding path to guide the unwinding direction of the fiber.

[0024] In the above process, the guiding action of the guide rollers ensures the accuracy of the fiber unwinding direction.

[0025] Secondly, embodiments of this application provide a carbon fiber production system, which includes the fiber roll unwinding device provided in the first aspect.

[0026] In the above process, the requirement that the produced spindle fibers need to be rolled into different weights or lengths is met. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a fiber roll unwinding device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the connection of the control system in the embodiments of this application.

[0029] Icons: 110-Equipment frame; 120-Unwinding roller; 121-Fiber shaft; 130-Winding shaft; 140-Drive unit; 151-PLC controller; 152-Rotary encoder; 153-Laser rangefinder; 154-Tension sensor; 155-Touch screen. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Please refer to Figure 1 and Figure 2 This embodiment provides a fiber roll unwinding device, which includes: a machine frame 110, an unwinding roller 120, a winding shaft 130, a drive device 140, and a control system.

[0038] The unwinding roller 120 is rotatably mounted on the equipment frame 110 and is used to mount the fiber shaft 121 that provides fibers; the winding shaft 130 is rotatably mounted on the equipment frame 110 and is used to receive the fibers provided by the fiber shaft 121 and wind them into a shaft, and the fibers from the fiber shaft 121 to the winding shaft 130 form an unwinding path; the driving device 140 is mounted on the equipment frame 110 and connected to the winding shaft 130 and is used to drive the winding shaft 130 to rotate.

[0039] The control system includes a PLC controller 151, a rotary encoder 152, and a laser rangefinder 153. The PLC controller 151 is connected to the drive device 140 and is used to control the rotation speed of the drive device 140. The rotary encoder 152 is set on the equipment frame 110 at the position corresponding to the unwinding roller 120 and is used to collect the rotation speed of the unwinding roller 120 in real time. The laser rangefinder 153 is set on the equipment frame 110 at the position corresponding to the winding shaft 130 and is used to dynamically scan the diameter change of the winding shaft 130. The PLC controller 151 is connected to the rotary encoder 152 and the laser rangefinder 153 respectively and is used to calculate the fiber length deviation value received by the winding shaft 130 based on the signals from the rotary encoder 152 and the laser rangefinder 153.

[0040] In this embodiment of the application, unwinding refers to rewinding the fibers on the already formed fiber roll onto the winding shaft 130 to form a fiber roll of several small shafts; the winding shaft 130 is used to support the fibers, for example, an inner paper tube can be used. Different specifications of fibers usually require winding shafts 130 of different diameters to support them in order to meet the usage requirements. Figure 1 The unwinding path is shown, in which the fiber supplied by the fiber shaft 121 mounted on the unwinding roller 120 is wound onto the winding shaft 130 in the direction indicated by the arrow.

[0041] In this embodiment, the PLC controller 151, also known as a Programmable Logic Controller, is a digital computing and operating electronic system designed specifically for industrial environments. It uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting, and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input / output (I / O).

[0042] In this embodiment of the application, the rotary encoder 152 is an electromechanical device that converts the rotational position of a shaft or shaft into an analog or digital signal. It is mainly used to measure the speed, direction, angle and position of rotation.

[0043] In this embodiment, the laser rangefinder 153 is an electronic device that uses a laser beam to accurately measure the distance to a target. It determines the distance by emitting a laser beam at the target, receiving the laser reflected back from the target, and calculating the round-trip time or phase difference of the laser beam.

[0044] In this embodiment, the PLC controller 151 is connected to the drive device 140. It can intelligently control the operation of the drive device 140, thereby controlling the rotation speed of the winding shaft 130, realizing automatic and rapid unwinding of the fiber, and significantly improving production efficiency.

[0045] The PLC controller 151 is also connected to a rotary encoder 152 and a laser rangefinder 153. The rotary encoder 152 is used to collect the rotational speed of the unwinding roller 120 in real time. Combined with the dynamic scanning of the diameter change of the winding shaft 130 by the laser rangefinder 153 (i.e., the increased thickness of the fiber roll on the winding shaft 130), the fiber length on the winding shaft 130 is calculated. The difference between this length and the preset theoretical length is the length deviation. For example, the cumulative rotational speed of the unwinding roller 120 collected by the rotary encoder 152 is N, the scanning frequency of the laser rangefinder 153 is ≥10 Hz, and the dynamic diameter of the winding shaft 130 scanned by the laser rangefinder 153 is D. The PLC controller 151 calculates the fiber length on the winding shaft 130 according to the built-in algorithm L=π×D×N, compares it with the preset theoretical length, and calculates the length deviation value of each fiber on the winding shaft 130. The real-time deviation data provides a basis for quality traceability and process optimization, realizing intelligent management.

[0046] Therefore, the fiber roll unwinding device of this application embodiment realizes automatic and rapid unwinding of fibers and automatic detection of length deviation, thereby improving production efficiency and product quality.

[0047] In some embodiments of this application, the control system also includes a touch screen 155 connected to the PLC controller 151 for displaying the equipment operating status and parameter settings. Specifically, it can display the length deviation value of each fiber axis in real time. Moreover, parameter setting and equipment control are performed through the touch screen 155, which is simple to operate and easy to maintain.

[0048] In some embodiments of this application, the drive device 140 includes a servo motor and a frequency converter, with the servo motor connected to the winding shaft 130 via the frequency converter.

[0049] In this embodiment, the drive device 140 achieves precise control of the rotational speed of the winding shaft 130, and the unwinding speed is infinitely adjustable through the frequency converter. The unwinding speed range is typically 50-2000 m / min.

[0050] In some embodiments of this application, it also includes a tension sensor 154, which is disposed on the equipment frame 110 and faces the unwinding path, for detecting the tension of the fibers on the unwinding path; a PLC controller 151 is connected to the tension sensor 154 and is used to control the rotation speed of the drive device 140 according to the signal from the tension sensor 154.

[0051] In this embodiment, the key control point in the unwinding process is tension control. Excessive tension will cause the fibers to be overstretched or even break; insufficient tension will cause the material to loosen, accumulate, and wrinkle, affecting subsequent processing. In this embodiment, the fiber tension is monitored in real time by a tension sensor 154, and the PLC controller 151 is used to receive the signal from the tension sensor 154 and control the operation of the drive device 140 to ensure uniform tension during fiber unwinding, avoid fiber breakage or uneven winding, and thus improve product quality.

[0052] In some embodiments of this application, the tension sensor 154 is a fiber optic tension sensor.

[0053] In this embodiment, the core principle of the fiber optic tension sensor is that when light propagates in an optical fiber, its physical properties (such as intensity, phase, wavelength, and polarization state) change with the tension (i.e., stretching) applied to the fiber. By accurately measuring the changes in these optical parameters, the magnitude of the tension applied to the optical fiber can be deduced.

[0054] In this embodiment, the fiber optic tension sensor 154 has high sensitivity and fast response characteristics, and can monitor the tension changes of the fiber in real time.

[0055] In some embodiments of this application, it also includes a fixing device, which is fixedly connected to the driving end of the driving device 140 and clamps and fixes one end of the winding shaft 130.

[0056] In some embodiments of this application, the fixing device includes pneumatic grippers for detachable fixing of the winding shaft 130.

[0057] In this embodiment, a pneumatic gripper is used to automatically clamp and release the winding shaft 130, supporting quick replacement of winding shafts 130 with different diameters.

[0058] In some embodiments of this application, the fixing device further includes a V-shaped positioning block for positioning the direction of the winding shaft 130.

[0059] In some embodiments of this application, it also includes an emergency braking device connected to a PLC controller 151. The PLC controller 151 is used to control the rotation speed of the drive device 140 according to the signal from the emergency braking device. The servo motor of the drive device 140 actively rotates in the opposite direction to "feed out" the material, forming a tension balance with the tension of the unwinding roller. This is the most advanced and precise control method, especially suitable for high-performance fibers that are extremely sensitive to tension.

[0060] In this embodiment, an emergency braking device is provided to ensure safe operation of the equipment and prevent accidents.

[0061] In some embodiments of this application, the emergency braking device includes an infrared beam sensor mounted on the equipment frame 110 and facing the unwinding path, for detecting fiber abnormalities on the unwinding path.

[0062] In this embodiment, the infrared beam sensor, PLC controller 151, and drive device 140 constitute an emergency braking device. The infrared beam sensor is used to detect abnormal situations such as wire breakage. Once an emergency braking protection is triggered, the control system controls the drive device 140 to stop operating based on the signal from the infrared beam sensor to avoid accidents.

[0063] In some embodiments of this application, there are multiple winding shafts 130, which are arranged in layers from bottom to top on the equipment frame 110, and each winding shaft 130 is connected to a corresponding drive device 140.

[0064] In this embodiment, multi-axis fibers are unwound simultaneously, and the axially oriented fibers of equal length are unwound into several small-axis fiber rolls along the unwound direction indicated by the arrow.

[0065] In some embodiments of this application, it also includes a guide roller disposed on the unwinding path for guiding the unwinding direction of the fiber.

[0066] In this embodiment, the guiding action of the guide roller ensures the accuracy of the fiber direction during the unwinding process.

[0067] The automatic control process of the fiber roll unwinding device in this embodiment is as follows: The tension sensor 154 transmits the detected fiber tension signal to the PLC controller 151. The PLC controller 151 controls the rotation speed of the drive device 140 according to the tension signal to achieve rapid and precise unwinding of the fiber.

[0068] During the unwinding process, the rotary encoder 152 is used to collect the rotation speed of the unwinding roller 120 in real time. Combined with the laser rangefinder 153, the diameter change of the winding shaft 130 is dynamically scanned and the signal is transmitted to the PLC controller 151. The PLC controller 151 calculates the fiber length on the winding shaft 130, and the difference between it and the preset theoretical length is the length deviation.

[0069] During the unwinding process, when the emergency braking device detects an abnormality, it transmits a signal to the PLC controller 151. The PLC controller 151 controls the speed of the drive device 140 to 0, thereby quickly stopping the equipment and ensuring equipment safety.

[0070] Therefore, the fiber roll unwinding device of this application embodiment can achieve rapid and accurate unwinding of fibers through intelligent detection and control, significantly improving production efficiency and product quality, and has broad application prospects.

[0071] This embodiment also provides a carbon fiber production system, which includes the fiber roll unwinding device of the aforementioned embodiment.

[0072] In this embodiment, the fiber roll unwinding device is located at the end of the carbon fiber production process and is used to meet the requirement that the produced spooled fibers need to be rolled into different weights or lengths after the fiber production is completed.

[0073] In summary, the fiber roll unwinding device and carbon fiber production system of this application realize automatic and rapid unwinding of fibers and automatic detection of length deviation, thereby improving production efficiency and product quality.

[0074] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A fiber roll unwinding device, characterized in that, It includes: Equipment rack; An unwinding roller, rotatably mounted on the equipment frame, is used to mount a fiber shaft that provides fibers; A winding shaft is rotatably mounted on the equipment frame for receiving fibers provided by the fiber shaft and winding them into a shaft, and the fibers from the fiber shaft to the winding shaft form an unwinding path; A drive device, which is mounted on the equipment frame and connected to the winding shaft, is used to drive the winding shaft to rotate; The control system includes a PLC controller, a rotary encoder, and a laser rangefinder. The PLC controller is connected to the drive device and is used to control the rotational speed of the drive device. The rotary encoder is set on the equipment frame at a position corresponding to the unwinding roller and is used to collect the rotational speed of the unwinding roller in real time. The laser rangefinder is set on the equipment frame at a position corresponding to the winding shaft and is used to dynamically scan the diameter change of the winding shaft. The PLC controller is connected to both the rotary encoder and the laser rangefinder and is used to calculate the fiber length deviation value received by the winding shaft based on the signals from the rotary encoder and the laser rangefinder.

2. The fiber roll unwinding device according to claim 1, characterized in that, The drive device includes a servo motor and a frequency converter, and the servo motor is connected to the winding shaft through the frequency converter.

3. The fiber roll unwinding device according to claim 1, characterized in that, It also includes a tension sensor, which is mounted on the equipment frame and faces the unwinding path, for detecting the tension of the fibers on the unwinding path; the PLC controller is connected to the tension sensor and is used to control the rotational speed of the drive device based on the signal from the tension sensor.

4. The fiber roll unwinding device according to claim 3, characterized in that, The tension sensor is a fiber optic tension sensor.

5. The fiber roll unwinding device according to claim 1, characterized in that, It also includes a fixing device, which is fixedly connected to the driving end of the driving device, and the fixing device clamps and fixes one end of the winding shaft.

6. The fiber roll unwinding device according to claim 5, characterized in that, The fixing device includes pneumatic grippers for detachable fixing of the winding shaft; And / or, the fixing device further includes a V-shaped positioning block for positioning the direction of the winding shaft.

7. The fiber roll unwinding device according to claim 1, characterized in that, It also includes an emergency braking device, which is connected to the PLC controller. The PLC controller is used to control the speed of the drive device according to the signal from the emergency braking device.

8. The fiber roll unwinding device according to claim 7, characterized in that, The emergency braking device includes an infrared beam sensor, which is mounted on the equipment frame and faces the unwinding path to detect fiber abnormalities on the unwinding path.

9. The fiber roll unwinding device according to claim 1, characterized in that, The number of winding shafts is multiple, and they are arranged in layers from bottom to top on the equipment frame. Each winding shaft is connected to a corresponding drive device. And / or, the fiber spool unwinding device further includes a guide roller disposed on the unwinding path to guide the unwinding direction of the fiber.

10. A carbon fiber production system, characterized in that, It includes a fiber roll unwinding device as described in any one of claims 1 to 9.

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